gnulib: lib/fts.c annotate

annotate lib/fts.c @ 17160:72f4bab621be

fts: introduce FTS_VERBATIM This gives clients the option to disable stripping of trailing slashes from input path names during fts_open initialization. The recent change v0.0-7611-g3a9002d that made fts_open strip trailing slashes from input path names had a negative impact on findutils that relies on the old fts_open behavior to implement POSIX requirement that each path operand of the find utility shall be evaluated unaltered as it was provided, including all trailing slash characters. * lib/fts_.h (FTS_VERBATIM): New bit flag. (FTS_OPTIONMASK, FTS_NAMEONLY, FTS_STOP): Adjust. * lib/fts.c (fts_open): Honor it.

author	Dmitry V. Levin <ldv@altlinux.org>
date	Sun, 18 Nov 2012 04:40:18 +0400
parents	d4ccb0388f18
children	d7a44f0f7a15

rev	line source
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1 /* Traverse a file hierarchy.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2
16201 8250f2777afc maint: update all copyright year number ranges Jim Meyering <meyering@redhat.com> parents: 16128 diff changeset	3 Copyright (C) 2004-2012 Free Software Foundation, Inc.
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	4
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 9129 diff changeset	5 This program is free software: you can redistribute it and/or modify
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	6 it under the terms of the GNU General Public License as published by
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 9129 diff changeset	7 the Free Software Foundation; either version 3 of the License, or
bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 9129 diff changeset	8 (at your option) any later version.
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	9
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	10 This program is distributed in the hope that it will be useful,
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	13 GNU General Public License for more details.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	14
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	15 You should have received a copy of the GNU General Public License
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 9129 diff changeset	16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	17
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	18 /*-
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	19 * Copyright (c) 1990, 1993, 1994
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	20 * The Regents of the University of California. All rights reserved.
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	21 *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	22 * Redistribution and use in source and binary forms, with or without
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	23 * modification, are permitted provided that the following conditions
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	24 * are met:
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	25 * 1. Redistributions of source code must retain the above copyright
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	26 * notice, this list of conditions and the following disclaimer.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	27 * 2. Redistributions in binary form must reproduce the above copyright
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	28 * notice, this list of conditions and the following disclaimer in the
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	29 * documentation and/or other materials provided with the distribution.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	30 * 4. Neither the name of the University nor the names of its contributors
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	31 * may be used to endorse or promote products derived from this software
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	32 * without specific prior written permission.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	33 *
16235 18a38c9615f0 In commentary, do not use ` to quote. Paul Eggert <eggert@cs.ucla.edu> parents: 16201 diff changeset	34 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	35 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	36 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	37 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	38 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	39 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	40 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	42 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	43 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	44 * SUCH DAMAGE.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	45 */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	46
7302 8a1a9361108c * _fpending.c: Include <config.h> unconditionally, since we no Paul Eggert <eggert@cs.ucla.edu> parents: 7225 diff changeset	47 #include <config.h>
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	48
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	49 #if defined(LIBC_SCCS) && !defined(lint)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	50 static char sccsid[] = "@(#)fts.c 8.6 (Berkeley) 8/14/94";
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	51 #endif /* LIBC_SCCS and not lint */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	52
5867 67b499052f7f * fts.c: Include fts_.h first, to check interface. Paul Eggert <eggert@cs.ucla.edu> parents: 5858 diff changeset	53 #include "fts_.h"
67b499052f7f * fts.c: Include fts_.h first, to check interface. Paul Eggert <eggert@cs.ucla.edu> parents: 5858 diff changeset	54
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	55 #if HAVE_SYS_PARAM_H \|\| defined _LIBC
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	56 # include <sys/param.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	57 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	58 #ifdef _LIBC
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	59 # include <include/sys/stat.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	60 #else
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	61 # include <sys/stat.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	62 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	63 #include <fcntl.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	64 #include <errno.h>
5867 67b499052f7f * fts.c: Include fts_.h first, to check interface. Paul Eggert <eggert@cs.ucla.edu> parents: 5858 diff changeset	65 #include <stdbool.h>
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	66 #include <stdlib.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	67 #include <string.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	68 #include <unistd.h>
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	69
6034 96149b1bbb32 (fts_cross_check) [FTS_DEBUG]: s/active_dir_ht/fts_cycle.ht/. Jim Meyering <jim@meyering.net> parents: 5907 diff changeset	70 #if ! _LIBC
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	71 # include "fcntl--.h"
11938 7cbcde229d97 backupfile, chdir-long, fts, savedir: make safer Eric Blake <ebb9@byu.net> parents: 11924 diff changeset	72 # include "dirent--.h"
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	73 # include "unistd--.h"
11940 6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	74 /* FIXME - use fcntl(F_DUPFD_CLOEXEC)/openat(O_CLOEXEC) once they are
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	75 supported. */
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	76 # include "cloexec.h"
11946 7604970d1a9f fts: fix compilation error Eric Blake <ebb9@byu.net> parents: 11940 diff changeset	77 # include "openat.h"
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	78 # include "same-inode.h"
6034 96149b1bbb32 (fts_cross_check) [FTS_DEBUG]: s/active_dir_ht/fts_cycle.ht/. Jim Meyering <jim@meyering.net> parents: 5907 diff changeset	79 #endif
96149b1bbb32 (fts_cross_check) [FTS_DEBUG]: s/active_dir_ht/fts_cycle.ht/. Jim Meyering <jim@meyering.net> parents: 5907 diff changeset	80
6949 96af1224c6fa * backupfile.c, dirfd.h, fts.c, getcwd.c, glob.c, glob_.h: Paul Eggert <eggert@cs.ucla.edu> parents: 6934 diff changeset	81 #include <dirent.h>
96af1224c6fa * backupfile.c, dirfd.h, fts.c, getcwd.c, glob.c, glob_.h: Paul Eggert <eggert@cs.ucla.edu> parents: 6934 diff changeset	82 #ifndef _D_EXACT_NAMLEN
96af1224c6fa * backupfile.c, dirfd.h, fts.c, getcwd.c, glob.c, glob_.h: Paul Eggert <eggert@cs.ucla.edu> parents: 6934 diff changeset	83 # define _D_EXACT_NAMLEN(dirent) strlen ((dirent)->d_name)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	84 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	85
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	86 #if HAVE_STRUCT_DIRENT_D_TYPE
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	87 /* True if the type of the directory entry D is known. */
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	88 # define DT_IS_KNOWN(d) ((d)->d_type != DT_UNKNOWN)
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	89 /* True if the type of the directory entry D must be T. */
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	90 # define DT_MUST_BE(d, t) ((d)->d_type == (t))
10843 36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	91 # define D_TYPE(d) ((d)->d_type)
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	92 #else
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	93 # define DT_IS_KNOWN(d) false
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	94 # define DT_MUST_BE(d, t) false
10843 36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	95 # define D_TYPE(d) DT_UNKNOWN
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	96
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	97 # undef DT_UNKNOWN
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	98 # define DT_UNKNOWN 0
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	99
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	100 /* Any nonzero values will do here, so long as they're distinct.
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	101 Undef any existing macros out of the way. */
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	102 # undef DT_BLK
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	103 # undef DT_CHR
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	104 # undef DT_DIR
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	105 # undef DT_FIFO
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	106 # undef DT_LNK
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	107 # undef DT_REG
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	108 # undef DT_SOCK
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	109 # define DT_BLK 1
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	110 # define DT_CHR 2
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	111 # define DT_DIR 3
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	112 # define DT_FIFO 4
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	113 # define DT_LNK 5
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	114 # define DT_REG 6
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	115 # define DT_SOCK 7
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	116 #endif
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	117
10863 054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	118 #ifndef S_IFLNK
054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	119 # define S_IFLNK 0
054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	120 #endif
054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	121 #ifndef S_IFSOCK
054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	122 # define S_IFSOCK 0
054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	123 #endif
054d026819f0 work around mingw's lack of some S_IF definitions Jim Meyering <meyering@redhat.com> parents: 10844 diff changeset	124
10481 47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	125 enum
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	126 {
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	127 NOT_AN_INODE_NUMBER = 0
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	128 };
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	129
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	130 #ifdef D_INO_IN_DIRENT
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	131 # define D_INO(dp) (dp)->d_ino
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	132 #else
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	133 /* Some systems don't have inodes, so fake them to avoid lots of ifdefs. */
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	134 # define D_INO(dp) NOT_AN_INODE_NUMBER
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	135 #endif
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	136
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	137 /* If possible (see max_entries, below), read no more than this many directory
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	138 entries at a time. Without this limit (i.e., when using non-NULL
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	139 fts_compar), processing a directory with 4,000,000 entries requires ~1GiB
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	140 of memory, and handling 64M entries would require 16GiB of memory. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	141 #ifndef FTS_MAX_READDIR_ENTRIES
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	142 # define FTS_MAX_READDIR_ENTRIES 100000
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	143 #endif
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	144
10481 47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	145 /* If there are more than this many entries in a directory,
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	146 and the conditions mentioned below are satisfied, then sort
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	147 the entries on inode number before any further processing. */
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	148 #ifndef FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	149 # define FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD 10000
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	150 #endif
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	151
10481 47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	152 enum
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	153 {
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	154 _FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD = FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	155 };
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	156
7684 784e80c3d895 Work around a compile-time error from the HP-UX 11.00 /bin/cc. Jim Meyering <jim@meyering.net> parents: 7681 diff changeset	157 enum Fts_stat
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	158 {
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	159 FTS_NO_STAT_REQUIRED = 1,
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	160 FTS_STAT_REQUIRED = 2
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	161 };
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	162
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	163 #ifdef _LIBC
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	164 # undef close
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	165 # define close __close
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	166 # undef closedir
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	167 # define closedir __closedir
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	168 # undef fchdir
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	169 # define fchdir __fchdir
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	170 # undef open
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	171 # define open __open
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	172 # undef readdir
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	173 # define readdir __readdir
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	174 #else
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	175 # undef internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	176 # define internal_function /* empty */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	177 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	178
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	179 #ifndef __set_errno
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	180 # define __set_errno(Val) errno = (Val)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	181 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	182
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	183 /* If this host provides the openat function, then we can avoid
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	184 attempting to open "." in some initialization code below. */
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	185 #ifdef HAVE_OPENAT
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	186 # define HAVE_OPENAT_SUPPORT 1
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	187 #else
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	188 # define HAVE_OPENAT_SUPPORT 0
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	189 #endif
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	190
7785 3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	191 #ifdef NDEBUG
3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	192 # define fts_assert(expr) ((void) 0)
3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	193 #else
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	194 # define fts_assert(expr) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	195 do \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	196 { \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	197 if (!(expr)) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	198 abort (); \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	199 } \
7785 3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	200 while (false)
3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	201 #endif
3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	202
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	203 static FTSENT fts_alloc (FTS , const char *, size_t) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	204 static FTSENT fts_build (FTS , int) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	205 static void fts_lfree (FTSENT *) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	206 static void fts_load (FTS , FTSENT ) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	207 static size_t fts_maxarglen (char * const *) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	208 static void fts_padjust (FTS , FTSENT ) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	209 static bool fts_palloc (FTS *, size_t) internal_function;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	210 static FTSENT fts_sort (FTS , FTSENT *, size_t) internal_function;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	211 static unsigned short int fts_stat (FTS , FTSENT , bool) internal_function;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	212 static int fts_safe_changedir (FTS , FTSENT , int, const char *)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	213 internal_function;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	214
13091 3af48780d248 Remove vestiges of fts-lgpl module. Bruno Haible <bruno@clisp.org> parents: 12772 diff changeset	215 #include "fts-cycle.c"
5872 fab6701e5cb2 New fts module. Paul Eggert <eggert@cs.ucla.edu> parents: 5867 diff changeset	216
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	217 #ifndef MAX
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	218 # define MAX(a,b) ((a) > (b) ? (a) : (b))
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	219 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	220
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	221 #ifndef SIZE_MAX
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	222 # define SIZE_MAX ((size_t) -1)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	223 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	224
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	225 #define ISDOT(a) (a[0] == '.' && (!a[1] \|\| (a[1] == '.' && !a[2])))
12772 2ea3e3fab7ee define STREQ(a,b) consistently, removing useless parentheses Jim Meyering <meyering@redhat.com> parents: 12559 diff changeset	226 #define STREQ(a, b) (strcmp (a, b) == 0)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	227
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	228 #define CLR(opt) (sp->fts_options &= ~(opt))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	229 #define ISSET(opt) (sp->fts_options & (opt))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	230 #define SET(opt) (sp->fts_options \|= (opt))
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	231
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	232 /* FIXME: FTS_NOCHDIR is now misnamed.
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	233 Call it FTS_USE_FULL_RELATIVE_FILE_NAMES instead. */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	234 #define FCHDIR(sp, fd) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	235 (!ISSET(FTS_NOCHDIR) && (ISSET(FTS_CWDFD) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	236 ? (cwd_advance_fd ((sp), (fd), true), 0) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	237 : fchdir (fd)))
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	238
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	239
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	240 /* fts_build flags */
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	241 /* FIXME: make this an enum */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	242 #define BCHILD 1 /* fts_children */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	243 #define BNAMES 2 /* fts_children, names only */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	244 #define BREAD 3 /* fts_read */
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	245
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	246 #if FTS_DEBUG
5894 d09af5fbd9f2 * modules/fts (Files): Remove m4/inttypes-pri.m4. Paul Eggert <eggert@cs.ucla.edu> parents: 5877 diff changeset	247 # include <inttypes.h>
d09af5fbd9f2 * modules/fts (Files): Remove m4/inttypes-pri.m4. Paul Eggert <eggert@cs.ucla.edu> parents: 5877 diff changeset	248 # include <stdint.h>
d09af5fbd9f2 * modules/fts (Files): Remove m4/inttypes-pri.m4. Paul Eggert <eggert@cs.ucla.edu> parents: 5877 diff changeset	249 # include <stdio.h>
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	250 # include "getcwdat.h"
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	251 bool fts_debug = false;
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	252 # define Dprintf(x) do { if (fts_debug) printf x; } while (false)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	253 #else
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	254 # define Dprintf(x)
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	255 # define fd_ring_check(x)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	256 # define fd_ring_print(a, b, c)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	257 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	258
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	259 #define LEAVE_DIR(Fts, Ent, Tag) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	260 do \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	261 { \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	262 Dprintf ((" %s-leaving: %s\n", Tag, (Ent)->fts_path)); \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	263 leave_dir (Fts, Ent); \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	264 fd_ring_check (Fts); \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	265 } \
5872 fab6701e5cb2 New fts module. Paul Eggert <eggert@cs.ucla.edu> parents: 5867 diff changeset	266 while (false)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	267
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	268 static void
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	269 fd_ring_clear (I_ring *fd_ring)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	270 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	271 while ( ! i_ring_empty (fd_ring))
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	272 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	273 int fd = i_ring_pop (fd_ring);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	274 if (0 <= fd)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	275 close (fd);
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	276 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	277 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	278
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	279 /* Overload the fts_statp->st_size member (otherwise unused, when
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	280 fts_info is FTS_NSOK) to indicate whether fts_read should stat
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	281 this entry or not. */
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	282 static void
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	283 fts_set_stat_required (FTSENT *p, bool required)
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	284 {
7785 3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	285 fts_assert (p->fts_info == FTS_NSOK);
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	286 p->fts_statp->st_size = (required
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	287 ? FTS_STAT_REQUIRED
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	288 : FTS_NO_STAT_REQUIRED);
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	289 }
26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	290
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	291 /* file-descriptor-relative opendir. */
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	292 /* FIXME: if others need this function, move it into lib/openat.c */
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	293 static inline DIR *
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	294 internal_function
13676 223800d7ac7d fts, getcwd, glob: audit for dirfd returning -1 Paul Eggert <eggert@cs.ucla.edu> parents: 13674 diff changeset	295 opendirat (int fd, char const dir, int extra_flags, int pdir_fd)
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	296 {
11939 cd48f861a7a7 fts: make directory fds more robust Eric Blake <ebb9@byu.net> parents: 11938 diff changeset	297 int new_fd = openat (fd, dir,
13674 5c447be5815d fts: use O_NOFOLLOW to avoid race condition when opening a directory Paul Eggert <eggert@cs.ucla.edu> parents: 13671 diff changeset	298 (O_RDONLY \| O_DIRECTORY \| O_NOCTTY \| O_NONBLOCK
5c447be5815d fts: use O_NOFOLLOW to avoid race condition when opening a directory Paul Eggert <eggert@cs.ucla.edu> parents: 13671 diff changeset	299 \| extra_flags));
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	300 DIR *dirp;
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	301
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	302 if (new_fd < 0)
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	303 return NULL;
11940 6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	304 set_cloexec_flag (new_fd, true);
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	305 dirp = fdopendir (new_fd);
13676 223800d7ac7d fts, getcwd, glob: audit for dirfd returning -1 Paul Eggert <eggert@cs.ucla.edu> parents: 13674 diff changeset	306 if (dirp)
223800d7ac7d fts, getcwd, glob: audit for dirfd returning -1 Paul Eggert <eggert@cs.ucla.edu> parents: 13674 diff changeset	307 *pdir_fd = new_fd;
223800d7ac7d fts, getcwd, glob: audit for dirfd returning -1 Paul Eggert <eggert@cs.ucla.edu> parents: 13674 diff changeset	308 else
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	309 {
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	310 int saved_errno = errno;
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	311 close (new_fd);
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	312 errno = saved_errno;
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	313 }
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	314 return dirp;
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	315 }
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	316
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	317 /* Virtual fchdir. Advance SP's working directory file descriptor,
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	318 SP->fts_cwd_fd, to FD, and push the previous value onto the fd_ring.
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	319 CHDIR_DOWN_ONE is true if FD corresponds to an entry in the directory
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	320 open on sp->fts_cwd_fd; i.e., to move the working directory one level
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	321 down. */
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	322 static void
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	323 internal_function
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	324 cwd_advance_fd (FTS *sp, int fd, bool chdir_down_one)
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	325 {
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	326 int old = sp->fts_cwd_fd;
7785 3246679850d5 Slight readability improvement: use an assert-like macro Jim Meyering <jim@meyering.net> parents: 7707 diff changeset	327 fts_assert (old != fd \|\| old == AT_FDCWD);
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	328
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	329 if (chdir_down_one)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	330 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	331 /* Push "old" onto the ring.
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	332 If the displaced file descriptor is non-negative, close it. */
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	333 int prev_fd_in_slot = i_ring_push (&sp->fts_fd_ring, old);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	334 fd_ring_print (sp, stderr, "post-push");
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	335 if (0 <= prev_fd_in_slot)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	336 close (prev_fd_in_slot); /* ignore any close failure */
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	337 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	338 else if ( ! ISSET (FTS_NOCHDIR))
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	339 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	340 if (0 <= old)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	341 close (old); /* ignore any close failure */
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	342 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	343
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	344 sp->fts_cwd_fd = fd;
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	345 }
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	346
15988 cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	347 /* Restore the initial, pre-traversal, "working directory".
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	348 In FTS_CWDFD mode, we merely call cwd_advance_fd, otherwise,
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	349 we may actually change the working directory.
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	350 Return 0 upon success. Upon failure, set errno and return nonzero. */
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	351 static int
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	352 restore_initial_cwd (FTS *sp)
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	353 {
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	354 int fail = FCHDIR (sp, ISSET (FTS_CWDFD) ? AT_FDCWD : sp->fts_rfd);
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	355 fd_ring_clear (&(sp->fts_fd_ring));
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	356 return fail;
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	357 }
cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	358
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	359 /* Open the directory DIR if possible, and return a file
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	360 descriptor. Return -1 and set errno on failure. It doesn't matter
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	361 whether the file descriptor has read or write access. */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	362
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	363 static inline int
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	364 internal_function
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	365 diropen (FTS const sp, char const dir)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	366 {
13616 acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable Paul Eggert <eggert@cs.ucla.edu> parents: 13091 diff changeset	367 int open_flags = (O_SEARCH \| O_DIRECTORY \| O_NOCTTY \| O_NONBLOCK
15374 04a9f678e342 fts: introduce FTS_NOATIME Eric Blake <eblake@redhat.com> parents: 14774 diff changeset	368 \| (ISSET (FTS_PHYSICAL) ? O_NOFOLLOW : 0)
04a9f678e342 fts: introduce FTS_NOATIME Eric Blake <eblake@redhat.com> parents: 14774 diff changeset	369 \| (ISSET (FTS_NOATIME) ? O_NOATIME : 0));
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	370
11940 6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	371 int fd = (ISSET (FTS_CWDFD)
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	372 ? openat (sp->fts_cwd_fd, dir, open_flags)
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	373 : open (dir, open_flags));
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	374 if (0 <= fd)
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	375 set_cloexec_flag (fd, true);
6dd8c8815b1f fts: avoid leaking fds Eric Blake <ebb9@byu.net> parents: 11939 diff changeset	376 return fd;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	377 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	378
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	379 FTS *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	380 fts_open (char * const *argv,
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	381 register int options,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	382 int (compar) (FTSENT const , FTSENT const *))
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	383 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	384 register FTS *sp;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	385 register FTSENT p, root;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	386 register size_t nitems;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	387 FTSENT *parent = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	388 FTSENT tmp = NULL; / pacify gcc */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	389 bool defer_stat;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	390
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	391 /* Options check. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	392 if (options & ~FTS_OPTIONMASK) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	393 __set_errno (EINVAL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	394 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	395 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	396 if ((options & FTS_NOCHDIR) && (options & FTS_CWDFD)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	397 __set_errno (EINVAL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	398 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	399 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	400 if ( ! (options & (FTS_LOGICAL \| FTS_PHYSICAL))) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	401 __set_errno (EINVAL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	402 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	403 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	404
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	405 /* Allocate/initialize the stream */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	406 if ((sp = malloc(sizeof(FTS))) == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	407 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	408 memset(sp, 0, sizeof(FTS));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	409 sp->fts_compar = compar;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	410 sp->fts_options = options;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	411
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	412 /* Logical walks turn on NOCHDIR; symbolic links are too hard. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	413 if (ISSET(FTS_LOGICAL)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	414 SET(FTS_NOCHDIR);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	415 CLR(FTS_CWDFD);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	416 }
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	417
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	418 /* Initialize fts_cwd_fd. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	419 sp->fts_cwd_fd = AT_FDCWD;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	420 if ( ISSET(FTS_CWDFD) && ! HAVE_OPENAT_SUPPORT)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	421 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	422 /* While it isn't technically necessary to open "." this
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	423 early, doing it here saves us the trouble of ensuring
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	424 later (where it'd be messier) that "." can in fact
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	425 be opened. If not, revert to FTS_NOCHDIR mode. */
15374 04a9f678e342 fts: introduce FTS_NOATIME Eric Blake <eblake@redhat.com> parents: 14774 diff changeset	426 int fd = open (".",
04a9f678e342 fts: introduce FTS_NOATIME Eric Blake <eblake@redhat.com> parents: 14774 diff changeset	427 O_SEARCH \| (ISSET (FTS_NOATIME) ? O_NOATIME : 0));
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	428 if (fd < 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	429 {
16235 18a38c9615f0 In commentary, do not use ` to quote. Paul Eggert <eggert@cs.ucla.edu> parents: 16201 diff changeset	430 /* Even if "." is unreadable, don't revert to FTS_NOCHDIR mode
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	431 on systems like Linux+PROC_FS, where our openat emulation
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	432 is good enough. Note: on a system that emulates
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	433 openat via /proc, this technique can still fail, but
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	434 only in extreme conditions, e.g., when the working
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	435 directory cannot be saved (i.e. save_cwd fails) --
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	436 and that happens on Linux only when "." is unreadable
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	437 and the CWD would be longer than PATH_MAX.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	438 FIXME: once Linux kernel openat support is well established,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	439 replace the above open call and this entire if/else block
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	440 with the body of the if-block below. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	441 if ( openat_needs_fchdir ())
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	442 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	443 SET(FTS_NOCHDIR);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	444 CLR(FTS_CWDFD);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	445 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	446 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	447 else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	448 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	449 close (fd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	450 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	451 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	452
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	453 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	454 * Start out with 1K of file name space, and enough, in any case,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	455 * to hold the user's file names.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	456 */
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	457 #ifndef MAXPATHLEN
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	458 # define MAXPATHLEN 1024
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	459 #endif
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	460 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	461 size_t maxarglen = fts_maxarglen(argv);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	462 if (! fts_palloc(sp, MAX(maxarglen, MAXPATHLEN)))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	463 goto mem1;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	464 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	465
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	466 /* Allocate/initialize root's parent. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	467 if (*argv != NULL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	468 if ((parent = fts_alloc(sp, "", 0)) == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	469 goto mem2;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	470 parent->fts_level = FTS_ROOTPARENTLEVEL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	471 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	472
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	473 /* The classic fts implementation would call fts_stat with
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	474 a new entry for each iteration of the loop below.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	475 If the comparison function is not specified or if the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	476 FTS_DEFER_STAT option is in effect, don't stat any entry
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	477 in this loop. This is an attempt to minimize the interval
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	478 between the initial stat/lstat/fstatat and the point at which
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	479 a directory argument is first opened. This matters for any
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	480 directory command line argument that resides on a file system
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	481 without genuine i-nodes. If you specify FTS_DEFER_STAT along
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	482 with a comparison function, that function must not access any
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	483 data via the fts_statp pointer. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	484 defer_stat = (compar == NULL \|\| ISSET(FTS_DEFER_STAT));
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	485
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	486 /* Allocate/initialize root(s). */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	487 for (root = NULL, nitems = 0; *argv != NULL; ++argv, ++nitems) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	488 /* Do allow zero-length file names. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	489 size_t len = strlen(*argv);
17074 d4ccb0388f18 fts: reduce two or more trailing slashes to just one, usually Jim Meyering <meyering@redhat.com> parents: 17073 diff changeset	490
17160 72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	491 if ( ! (options & FTS_VERBATIM))
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	492 {
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	493 /* If there are two or more trailing slashes, trim all but one,
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	494 but don't change "//" to "/", and do map "///" to "/". */
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	495 char const v = argv;
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	496 if (2 < len && v[len - 1] == '/')
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	497 while (1 < len && v[len - 2] == '/')
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	498 --len;
72f4bab621be fts: introduce FTS_VERBATIM Dmitry V. Levin <ldv@altlinux.org> parents: 17074 diff changeset	499 }
17074 d4ccb0388f18 fts: reduce two or more trailing slashes to just one, usually Jim Meyering <meyering@redhat.com> parents: 17073 diff changeset	500
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	501 if ((p = fts_alloc(sp, *argv, len)) == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	502 goto mem3;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	503 p->fts_level = FTS_ROOTLEVEL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	504 p->fts_parent = parent;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	505 p->fts_accpath = p->fts_name;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	506 /* Even when defer_stat is true, be sure to stat the first
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	507 command line argument, since fts_read (at least with
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	508 FTS_XDEV) requires that. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	509 if (defer_stat && root != NULL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	510 p->fts_info = FTS_NSOK;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	511 fts_set_stat_required(p, true);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	512 } else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	513 p->fts_info = fts_stat(sp, p, false);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	514 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	515
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	516 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	517 * If comparison routine supplied, traverse in sorted
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	518 * order; otherwise traverse in the order specified.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	519 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	520 if (compar) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	521 p->fts_link = root;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	522 root = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	523 } else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	524 p->fts_link = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	525 if (root == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	526 tmp = root = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	527 else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	528 tmp->fts_link = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	529 tmp = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	530 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	531 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	532 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	533 if (compar && nitems > 1)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	534 root = fts_sort(sp, root, nitems);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	535
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	536 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	537 * Allocate a dummy pointer and make fts_read think that we've just
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	538 * finished the node before the root(s); set p->fts_info to FTS_INIT
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	539 * so that everything about the "current" node is ignored.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	540 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	541 if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	542 goto mem3;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	543 sp->fts_cur->fts_link = root;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	544 sp->fts_cur->fts_info = FTS_INIT;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	545 if (! setup_dir (sp))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	546 goto mem3;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	547
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	548 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	549 * If using chdir(2), grab a file descriptor pointing to dot to ensure
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	550 * that we can get back here; this could be avoided for some file names,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	551 * but almost certainly not worth the effort. Slashes, symbolic links,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	552 * and ".." are all fairly nasty problems. Note, if we can't get the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	553 * descriptor we run anyway, just more slowly.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	554 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	555 if (!ISSET(FTS_NOCHDIR) && !ISSET(FTS_CWDFD)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	556 && (sp->fts_rfd = diropen (sp, ".")) < 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	557 SET(FTS_NOCHDIR);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	558
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	559 i_ring_init (&sp->fts_fd_ring, -1);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	560 return (sp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	561
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	562 mem3: fts_lfree(root);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	563 free(parent);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	564 mem2: free(sp->fts_path);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	565 mem1: free(sp);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	566 return (NULL);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	567 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	568
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	569 static void
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	570 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	571 fts_load (FTS sp, register FTSENT p)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	572 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	573 register size_t len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	574 register char *cp;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	575
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	576 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	577 * Load the stream structure for the next traversal. Since we don't
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	578 * actually enter the directory until after the preorder visit, set
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	579 * the fts_accpath field specially so the chdir gets done to the right
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	580 * place and the user can access the first node. From fts_open it's
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	581 * known that the file name will fit.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	582 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	583 len = p->fts_pathlen = p->fts_namelen;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	584 memmove(sp->fts_path, p->fts_name, len + 1);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	585 if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name \|\| cp[1])) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	586 len = strlen(++cp);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	587 memmove(p->fts_name, cp, len + 1);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	588 p->fts_namelen = len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	589 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	590 p->fts_accpath = p->fts_path = sp->fts_path;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	591 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	592
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	593 int
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	594 fts_close (FTS *sp)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	595 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	596 register FTSENT freep, p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	597 int saved_errno = 0;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	598
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	599 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	600 * This still works if we haven't read anything -- the dummy structure
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	601 * points to the root list, so we step through to the end of the root
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	602 * list which has a valid parent pointer.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	603 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	604 if (sp->fts_cur) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	605 for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	606 freep = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	607 p = p->fts_link != NULL ? p->fts_link : p->fts_parent;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	608 free(freep);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	609 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	610 free(p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	611 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	612
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	613 /* Free up child linked list, sort array, file name buffer. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	614 if (sp->fts_child)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	615 fts_lfree(sp->fts_child);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	616 free(sp->fts_array);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	617 free(sp->fts_path);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	618
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	619 if (ISSET(FTS_CWDFD))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	620 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	621 if (0 <= sp->fts_cwd_fd)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	622 if (close (sp->fts_cwd_fd))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	623 saved_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	624 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	625 else if (!ISSET(FTS_NOCHDIR))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	626 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	627 /* Return to original directory, save errno if necessary. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	628 if (fchdir(sp->fts_rfd))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	629 saved_errno = errno;
11924 10d064d93551 fts: fts_close now fails also when closing a dir file descriptor fails Jim Meyering <meyering@redhat.com> parents: 11722 diff changeset	630
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	631 /* If close fails, record errno only if saved_errno is zero,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	632 so that we report the probably-more-meaningful fchdir errno. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	633 if (close (sp->fts_rfd))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	634 if (saved_errno == 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	635 saved_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	636 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	637
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	638 fd_ring_clear (&sp->fts_fd_ring);
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	639
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	640 if (sp->fts_leaf_optimization_works_ht)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	641 hash_free (sp->fts_leaf_optimization_works_ht);
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	642
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	643 free_dir (sp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	644
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	645 /* Free up the stream pointer. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	646 free(sp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	647
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	648 /* Set errno and return. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	649 if (saved_errno) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	650 __set_errno (saved_errno);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	651 return (-1);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	652 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	653
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	654 return (0);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	655 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	656
11163 f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	657 #if defined __linux__ \
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	658 && HAVE_SYS_VFS_H && HAVE_FSTATFS && HAVE_STRUCT_STATFS_F_TYPE
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	659
14379 2330aac2ae54 maint: adjust cpp indentation to reflect nesting depth Jim Meyering <meyering@redhat.com> parents: 14079 diff changeset	660 # include <sys/vfs.h>
11163 f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	661
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	662 /* Linux-specific constants from coreutils' src/fs.h */
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	663 # define S_MAGIC_TMPFS 0x1021994
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	664 # define S_MAGIC_NFS 0x6969
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	665 # define S_MAGIC_REISERFS 0x52654973
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	666 # define S_MAGIC_PROC 0x9FA0
11163 f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	667
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	668 /* Return false if it is easy to determine the file system type of
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	669 the directory on which DIR_FD is open, and sorting dirents on
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	670 inode numbers is known not to improve traversal performance with
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	671 that type of file system. Otherwise, return true. */
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	672 static bool
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	673 dirent_inode_sort_may_be_useful (int dir_fd)
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	674 {
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	675 /* Skip the sort only if we can determine efficiently
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	676 that skipping it is the right thing to do.
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	677 The cost of performing an unnecessary sort is negligible,
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	678 while the cost of not performing it can be O(N^2) with
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	679 a very large constant. */
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	680 struct statfs fs_buf;
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	681
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	682 /* If fstatfs fails, assume sorting would be useful. */
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	683 if (fstatfs (dir_fd, &fs_buf) != 0)
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	684 return true;
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	685
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	686 /* FIXME: what about when f_type is not an integral type?
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	687 deal with that if/when it's encountered. */
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	688 switch (fs_buf.f_type)
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	689 {
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	690 case S_MAGIC_TMPFS:
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	691 case S_MAGIC_NFS:
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	692 /* On a file system of any of these types, sorting
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	693 is unnecessary, and hence wasteful. */
11163 f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	694 return false;
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	695
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	696 default:
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	697 return true;
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	698 }
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	699 }
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	700
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	701 /* Given a file descriptor DIR_FD open on a directory D,
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	702 return true if it is valid to apply the leaf-optimization
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	703 technique of counting directories in D via stat.st_nlink. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	704 static bool
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	705 leaf_optimization_applies (int dir_fd)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	706 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	707 struct statfs fs_buf;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	708
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	709 /* If fstatfs fails, assume we can't use the optimization. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	710 if (fstatfs (dir_fd, &fs_buf) != 0)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	711 return false;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	712
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	713 /* FIXME: do we need to detect AFS mount points? I doubt it,
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	714 unless fstatfs can report S_MAGIC_REISERFS for such a directory. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	715
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	716 switch (fs_buf.f_type)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	717 {
16358 a712776b11ce maint: spelling fixes Paul Eggert <eggert@cs.ucla.edu> parents: 16235 diff changeset	718 /* List here the file system types that lack usable dirent.d_type
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	719 info, yet for which the optimization does apply. */
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	720 case S_MAGIC_REISERFS:
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	721 return true;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	722
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	723 case S_MAGIC_PROC:
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	724 /* Explicitly listing this or any other file system type for which
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	725 the optimization is not applicable is not necessary, but we leave
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	726 it here to document the risk. Per http://bugs.debian.org/143111,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	727 /proc may have bogus stat.st_nlink values. */
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	728 /* fall through */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	729 default:
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	730 return false;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	731 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	732 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	733
11163 f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	734 #else
12050 d1840b588599 fts: avoid compiler warning Eric Blake <ebb9@byu.net> parents: 11946 diff changeset	735 static bool
12482 11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_ Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	736 dirent_inode_sort_may_be_useful (int dir_fd _GL_UNUSED) { return true; }
12050 d1840b588599 fts: avoid compiler warning Eric Blake <ebb9@byu.net> parents: 11946 diff changeset	737 static bool
12482 11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_ Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	738 leaf_optimization_applies (int dir_fd _GL_UNUSED) { return false; }
11163 f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	739 #endif
f448fc8fe832 fts: move a function definition "up" (no semantic change) Jim Meyering <meyering@redhat.com> parents: 11162 diff changeset	740
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	741 /* link-count-optimization entry:
14774 70d101744577 maint: correct misuse of "a" and "an" Jim Meyering <meyering@redhat.com> parents: 14612 diff changeset	742 map a stat.st_dev number to a boolean: leaf_optimization_works */
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	743 struct LCO_ent
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	744 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	745 dev_t st_dev;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	746 bool opt_ok;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	747 };
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	748
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	749 /* Use a tiny initial size. If a traversal encounters more than
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	750 a few devices, the cost of growing/rehashing this table will be
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	751 rendered negligible by the number of inodes processed. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	752 enum { LCO_HT_INITIAL_SIZE = 13 };
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	753
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	754 static size_t
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	755 LCO_hash (void const *x, size_t table_size)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	756 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	757 struct LCO_ent const *ax = x;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	758 return (uintmax_t) ax->st_dev % table_size;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	759 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	760
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	761 static bool
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	762 LCO_compare (void const x, void const y)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	763 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	764 struct LCO_ent const *ax = x;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	765 struct LCO_ent const *ay = y;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	766 return ax->st_dev == ay->st_dev;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	767 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	768
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	769 /* Ask the same question as leaf_optimization_applies, but query
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	770 the cache first (FTS.fts_leaf_optimization_works_ht), and if necessary,
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	771 update that cache. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	772 static bool
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	773 link_count_optimize_ok (FTSENT const *p)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	774 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	775 FTS *sp = p->fts_fts;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	776 Hash_table *h = sp->fts_leaf_optimization_works_ht;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	777 struct LCO_ent tmp;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	778 struct LCO_ent *ent;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	779 bool opt_ok;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	780 struct LCO_ent *t2;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	781
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	782 /* If we're not in CWDFD mode, don't bother with this optimization,
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	783 since the caller is not serious about performance. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	784 if (!ISSET(FTS_CWDFD))
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	785 return false;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	786
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	787 /* map st_dev to the boolean, leaf_optimization_works */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	788 if (h == NULL)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	789 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	790 h = sp->fts_leaf_optimization_works_ht
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	791 = hash_initialize (LCO_HT_INITIAL_SIZE, NULL, LCO_hash,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	792 LCO_compare, free);
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	793 if (h == NULL)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	794 return false;
11164 90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	795 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	796 tmp.st_dev = p->fts_statp->st_dev;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	797 ent = hash_lookup (h, &tmp);
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	798 if (ent)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	799 return ent->opt_ok;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	800
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	801 /* Look-up failed. Query directly and cache the result. */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	802 t2 = malloc (sizeof *t2);
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	803 if (t2 == NULL)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	804 return false;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	805
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	806 /* Is it ok to perform the optimization in the dir, FTS_CWD_FD? */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	807 opt_ok = leaf_optimization_applies (sp->fts_cwd_fd);
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	808 t2->opt_ok = opt_ok;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	809 t2->st_dev = p->fts_statp->st_dev;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	810
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	811 ent = hash_insert (h, t2);
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	812 if (ent == NULL)
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	813 {
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	814 /* insertion failed */
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	815 free (t2);
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	816 return false;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	817 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	818 fts_assert (ent == t2);
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	819
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	820 return opt_ok;
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	821 }
90715da41753 fts: arrange not to stat non-directories in more cases Jim Meyering <meyering@redhat.com> parents: 11163 diff changeset	822
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	823 /*
5907 c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	824 * Special case of "/" at the end of the file name so that slashes aren't
c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	825 * appended which would cause file names to be written as "....//foo".
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	826 */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	827 #define NAPPEND(p) \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	828 (p->fts_path[p->fts_pathlen - 1] == '/' \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	829 ? p->fts_pathlen - 1 : p->fts_pathlen)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	830
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	831 FTSENT *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	832 fts_read (register FTS *sp)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	833 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	834 register FTSENT p, tmp;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	835 register unsigned short int instr;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	836 register char *t;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	837
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	838 /* If finished or unrecoverable error, return NULL. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	839 if (sp->fts_cur == NULL \|\| ISSET(FTS_STOP))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	840 return (NULL);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	841
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	842 /* Set current node pointer. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	843 p = sp->fts_cur;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	844
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	845 /* Save and zero out user instructions. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	846 instr = p->fts_instr;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	847 p->fts_instr = FTS_NOINSTR;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	848
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	849 /* Any type of file may be re-visited; re-stat and re-turn. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	850 if (instr == FTS_AGAIN) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	851 p->fts_info = fts_stat(sp, p, false);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	852 return (p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	853 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	854 Dprintf (("fts_read: p=%s\n",
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	855 p->fts_info == FTS_INIT ? "" : p->fts_path));
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	856
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	857 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	858 * Following a symlink -- SLNONE test allows application to see
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	859 * SLNONE and recover. If indirecting through a symlink, have
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	860 * keep a pointer to current location. If unable to get that
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	861 * pointer, follow fails.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	862 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	863 if (instr == FTS_FOLLOW &&
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	864 (p->fts_info == FTS_SL \|\| p->fts_info == FTS_SLNONE)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	865 p->fts_info = fts_stat(sp, p, true);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	866 if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	867 if ((p->fts_symfd = diropen (sp, ".")) < 0) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	868 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	869 p->fts_info = FTS_ERR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	870 } else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	871 p->fts_flags \|= FTS_SYMFOLLOW;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	872 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	873 goto check_for_dir;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	874 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	875
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	876 /* Directory in pre-order. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	877 if (p->fts_info == FTS_D) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	878 /* If skipped or crossed mount point, do post-order visit. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	879 if (instr == FTS_SKIP \|\|
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	880 (ISSET(FTS_XDEV) && p->fts_statp->st_dev != sp->fts_dev)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	881 if (p->fts_flags & FTS_SYMFOLLOW)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	882 (void)close(p->fts_symfd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	883 if (sp->fts_child) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	884 fts_lfree(sp->fts_child);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	885 sp->fts_child = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	886 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	887 p->fts_info = FTS_DP;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	888 LEAVE_DIR (sp, p, "1");
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	889 return (p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	890 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	891
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	892 /* Rebuild if only read the names and now traversing. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	893 if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	894 CLR(FTS_NAMEONLY);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	895 fts_lfree(sp->fts_child);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	896 sp->fts_child = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	897 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	898
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	899 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	900 * Cd to the subdirectory.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	901 *
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	902 * If have already read and now fail to chdir, whack the list
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	903 * to make the names come out right, and set the parent errno
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	904 * so the application will eventually get an error condition.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	905 * Set the FTS_DONTCHDIR flag so that when we logically change
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	906 * directories back to the parent we don't do a chdir.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	907 *
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	908 * If haven't read do so. If the read fails, fts_build sets
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	909 * FTS_STOP or the fts_info field of the node.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	910 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	911 if (sp->fts_child != NULL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	912 if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	913 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	914 p->fts_flags \|= FTS_DONTCHDIR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	915 for (p = sp->fts_child; p != NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	916 p = p->fts_link)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	917 p->fts_accpath =
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	918 p->fts_parent->fts_accpath;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	919 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	920 } else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	921 if (ISSET(FTS_STOP))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	922 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	923 /* If fts_build's call to fts_safe_changedir failed
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	924 because it was not able to fchdir into a
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	925 subdirectory, tell the caller. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	926 if (p->fts_errno && p->fts_info != FTS_DNR)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	927 p->fts_info = FTS_ERR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	928 LEAVE_DIR (sp, p, "2");
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	929 return (p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	930 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	931 p = sp->fts_child;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	932 sp->fts_child = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	933 goto name;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	934 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	935
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	936 /* Move to the next node on this level. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	937 next: tmp = p;
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	938
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	939 /* If we have so many directory entries that we're reading them
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	940 in batches, and we've reached the end of the current batch,
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	941 read in a new batch. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	942 if (p->fts_link == NULL && p->fts_parent->fts_dirp)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	943 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	944 p = tmp->fts_parent;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	945 sp->fts_cur = p;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	946 sp->fts_path[p->fts_pathlen] = '\0';
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	947
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	948 if ((p = fts_build (sp, BREAD)) == NULL)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	949 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	950 if (ISSET(FTS_STOP))
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	951 return NULL;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	952 goto cd_dot_dot;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	953 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	954
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	955 free(tmp);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	956 goto name;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	957 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	958
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	959 if ((p = p->fts_link) != NULL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	960 sp->fts_cur = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	961 free(tmp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	962
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	963 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	964 * If reached the top, return to the original directory (or
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	965 * the root of the tree), and load the file names for the next
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	966 * root.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	967 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	968 if (p->fts_level == FTS_ROOTLEVEL) {
15988 cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	969 if (restore_initial_cwd(sp)) {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	970 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	971 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	972 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	973 free_dir(sp);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	974 fts_load(sp, p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	975 setup_dir(sp);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	976 goto check_for_dir;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	977 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	978
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	979 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	980 * User may have called fts_set on the node. If skipped,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	981 * ignore. If followed, get a file descriptor so we can
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	982 * get back if necessary.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	983 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	984 if (p->fts_instr == FTS_SKIP)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	985 goto next;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	986 if (p->fts_instr == FTS_FOLLOW) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	987 p->fts_info = fts_stat(sp, p, true);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	988 if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	989 if ((p->fts_symfd = diropen (sp, ".")) < 0) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	990 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	991 p->fts_info = FTS_ERR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	992 } else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	993 p->fts_flags \|= FTS_SYMFOLLOW;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	994 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	995 p->fts_instr = FTS_NOINSTR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	996 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	997
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	998 name: t = sp->fts_path + NAPPEND(p->fts_parent);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	999 *t++ = '/';
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1000 memmove(t, p->fts_name, p->fts_namelen + 1);
5872 fab6701e5cb2 New fts module. Paul Eggert <eggert@cs.ucla.edu> parents: 5867 diff changeset	1001 check_for_dir:
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1002 sp->fts_cur = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1003 if (p->fts_info == FTS_NSOK)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1004 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1005 if (p->fts_statp->st_size == FTS_STAT_REQUIRED)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1006 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1007 FTSENT *parent = p->fts_parent;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1008 if (FTS_ROOTLEVEL < p->fts_level
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1009 /* ->fts_n_dirs_remaining is not valid
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1010 for command-line-specified names. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1011 && parent->fts_n_dirs_remaining == 0
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1012 && ISSET(FTS_NOSTAT)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1013 && ISSET(FTS_PHYSICAL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1014 && link_count_optimize_ok (parent))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1015 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1016 /* nothing more needed */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1017 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1018 else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1019 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1020 p->fts_info = fts_stat(sp, p, false);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1021 if (S_ISDIR(p->fts_statp->st_mode)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1022 && p->fts_level != FTS_ROOTLEVEL
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1023 && parent->fts_n_dirs_remaining)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1024 parent->fts_n_dirs_remaining--;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1025 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1026 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1027 else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1028 fts_assert (p->fts_statp->st_size == FTS_NO_STAT_REQUIRED);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1029 }
7707 3f57a32346a2 * lib/fts.c (fts_load): Don't set sp->fts_dev here, since Jim Meyering <jim@meyering.net> parents: 7684 diff changeset	1030
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1031 if (p->fts_info == FTS_D)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1032 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1033 /* Now that P->fts_statp is guaranteed to be valid,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1034 if this is a command-line directory, record its
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1035 device number, to be used for FTS_XDEV. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1036 if (p->fts_level == FTS_ROOTLEVEL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1037 sp->fts_dev = p->fts_statp->st_dev;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1038 Dprintf ((" entering: %s\n", p->fts_path));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1039 if (! enter_dir (sp, p))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1040 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1041 __set_errno (ENOMEM);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1042 return NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1043 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1044 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1045 return p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1046 }
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1047 cd_dot_dot:
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1048
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1049 /* Move up to the parent node. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1050 p = tmp->fts_parent;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1051 sp->fts_cur = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1052 free(tmp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1053
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1054 if (p->fts_level == FTS_ROOTPARENTLEVEL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1055 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1056 * Done; free everything up and set errno to 0 so the user
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1057 * can distinguish between error and EOF.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1058 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1059 free(p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1060 __set_errno (0);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1061 return (sp->fts_cur = NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1062 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1063
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1064 fts_assert (p->fts_info != FTS_NSOK);
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	1065
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1066 /* NUL terminate the file name. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1067 sp->fts_path[p->fts_pathlen] = '\0';
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1068
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1069 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1070 * Return to the parent directory. If at a root node, restore
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1071 * the initial working directory. If we came through a symlink,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1072 * go back through the file descriptor. Otherwise, move up
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1073 * one level, via "..".
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1074 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1075 if (p->fts_level == FTS_ROOTLEVEL) {
15988 cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	1076 if (restore_initial_cwd(sp)) {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1077 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1078 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1079 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1080 } else if (p->fts_flags & FTS_SYMFOLLOW) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1081 if (FCHDIR(sp, p->fts_symfd)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1082 int saved_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1083 (void)close(p->fts_symfd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1084 __set_errno (saved_errno);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1085 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1086 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1087 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1088 (void)close(p->fts_symfd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1089 } else if (!(p->fts_flags & FTS_DONTCHDIR) &&
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1090 fts_safe_changedir(sp, p->fts_parent, -1, "..")) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1091 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1092 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1093 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1094 p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1095 if (p->fts_errno == 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1096 LEAVE_DIR (sp, p, "3");
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1097 return ISSET(FTS_STOP) ? NULL : p;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1098 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1099
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1100 /*
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1101 * Fts_set takes the stream as an argument although it's not used in this
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1102 * implementation; it would be necessary if anyone wanted to add global
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1103 * semantics to fts using fts_set. An error return is allowed for similar
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1104 * reasons.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1105 */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1106 /* ARGSUSED */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1107 int
12482 11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_ Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	1108 fts_set(FTS sp _GL_UNUSED, FTSENT p, int instr)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1109 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1110 if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1111 instr != FTS_NOINSTR && instr != FTS_SKIP) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1112 __set_errno (EINVAL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1113 return (1);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1114 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1115 p->fts_instr = instr;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1116 return (0);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1117 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1118
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1119 FTSENT *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1120 fts_children (register FTS *sp, int instr)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1121 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1122 register FTSENT *p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1123 int fd;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1124
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1125 if (instr != 0 && instr != FTS_NAMEONLY) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1126 __set_errno (EINVAL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1127 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1128 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1129
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1130 /* Set current node pointer. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1131 p = sp->fts_cur;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1132
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1133 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1134 * Errno set to 0 so user can distinguish empty directory from
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1135 * an error.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1136 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1137 __set_errno (0);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1138
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1139 /* Fatal errors stop here. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1140 if (ISSET(FTS_STOP))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1141 return (NULL);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1142
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1143 /* Return logical hierarchy of user's arguments. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1144 if (p->fts_info == FTS_INIT)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1145 return (p->fts_link);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1146
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1147 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1148 * If not a directory being visited in pre-order, stop here. Could
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1149 * allow FTS_DNR, assuming the user has fixed the problem, but the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1150 * same effect is available with FTS_AGAIN.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1151 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1152 if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1153 return (NULL);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1154
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1155 /* Free up any previous child list. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1156 if (sp->fts_child != NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1157 fts_lfree(sp->fts_child);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1158
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1159 if (instr == FTS_NAMEONLY) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1160 SET(FTS_NAMEONLY);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1161 instr = BNAMES;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1162 } else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1163 instr = BCHILD;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1164
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1165 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1166 * If using chdir on a relative file name and called BEFORE fts_read
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1167 * does its chdir to the root of a traversal, we can lose -- we need to
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1168 * chdir into the subdirectory, and we don't know where the current
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1169 * directory is, so we can't get back so that the upcoming chdir by
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1170 * fts_read will work.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1171 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1172 if (p->fts_level != FTS_ROOTLEVEL \|\| p->fts_accpath[0] == '/' \|\|
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1173 ISSET(FTS_NOCHDIR))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1174 return (sp->fts_child = fts_build(sp, instr));
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1175
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1176 if ((fd = diropen (sp, ".")) < 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1177 return (sp->fts_child = NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1178 sp->fts_child = fts_build(sp, instr);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1179 if (ISSET(FTS_CWDFD))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1180 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1181 cwd_advance_fd (sp, fd, true);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1182 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1183 else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1184 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1185 if (fchdir(fd))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1186 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1187 int saved_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1188 close (fd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1189 __set_errno (saved_errno);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1190 return NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1191 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1192 close (fd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1193 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1194 return (sp->fts_child);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1195 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1196
10481 47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1197 /* A comparison function to sort on increasing inode number.
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1198 For some file system types, sorting either way makes a huge
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1199 performance difference for a directory with very many entries,
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1200 but sorting on increasing values is slightly better than sorting
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1201 on decreasing values. The difference is in the 5% range. */
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1202 static int
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1203 fts_compare_ino (struct _ftsent const a, struct _ftsent const b)
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1204 {
10482 e8d1a5b2c49c fts: tweak inode comparison function Jim Meyering <meyering@redhat.com> parents: 10481 diff changeset	1205 return (a[0]->fts_statp->st_ino < b[0]->fts_statp->st_ino ? -1
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1206 : b[0]->fts_statp->st_ino < a[0]->fts_statp->st_ino ? 1 : 0);
10481 47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1207 }
47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1208
10843 36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1209 /* Map the dirent.d_type value, DTYPE, to the corresponding stat.st_mode
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1210 S_IF* bit and set ST.st_mode, thus clearing all other bits in that field. */
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1211 static void
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1212 set_stat_type (struct stat *st, unsigned int dtype)
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1213 {
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1214 mode_t type;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1215 switch (dtype)
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1216 {
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1217 case DT_BLK:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1218 type = S_IFBLK;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1219 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1220 case DT_CHR:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1221 type = S_IFCHR;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1222 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1223 case DT_DIR:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1224 type = S_IFDIR;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1225 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1226 case DT_FIFO:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1227 type = S_IFIFO;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1228 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1229 case DT_LNK:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1230 type = S_IFLNK;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1231 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1232 case DT_REG:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1233 type = S_IFREG;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1234 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1235 case DT_SOCK:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1236 type = S_IFSOCK;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1237 break;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1238 default:
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1239 type = 0;
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1240 }
10844 70fc7855343a fts: fix a thinko Jim Meyering <meyering@redhat.com> parents: 10843 diff changeset	1241 st->st_mode = type;
10843 36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1242 }
36479bd141ee fts: provide dirent.d_type via FTSENT.fts_statp, when possible Jim Meyering <meyering@redhat.com> parents: 10688 diff changeset	1243
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1244 #define closedir_and_clear(dirp) \
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1245 do \
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1246 { \
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1247 closedir (dirp); \
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1248 dirp = NULL; \
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1249 } \
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1250 while (0)
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1251
15528 8203b056cc79 maint: fts: give __opendir2 a new parameter and rename Jim Meyering <meyering@redhat.com> parents: 15527 diff changeset	1252 #define fts_opendir(file, Pdir_fd) \
15525 792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1253 opendirat((! ISSET(FTS_NOCHDIR) && ISSET(FTS_CWDFD) \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1254 ? sp->fts_cwd_fd : AT_FDCWD), \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1255 file, \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1256 (((ISSET(FTS_PHYSICAL) \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1257 && ! (ISSET(FTS_COMFOLLOW) \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1258 && cur->fts_level == FTS_ROOTLEVEL)) \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1259 ? O_NOFOLLOW : 0) \
792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1260 \| (ISSET (FTS_NOATIME) ? O_NOATIME : 0)), \
15528 8203b056cc79 maint: fts: give __opendir2 a new parameter and rename Jim Meyering <meyering@redhat.com> parents: 15527 diff changeset	1261 Pdir_fd)
15525 792927a7e09d maint: fts.c: move __opendir2 #define "up" out of function body Jim Meyering <meyering@redhat.com> parents: 15524 diff changeset	1262
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1263 /*
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1264 * This is the tricky part -- do not casually change anything in here. The
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1265 * idea is to build the linked list of entries that are used by fts_children
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1266 * and fts_read. There are lots of special cases.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1267 *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1268 * The real slowdown in walking the tree is the stat calls. If FTS_NOSTAT is
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1269 * set and it's a physical walk (so that symbolic links can't be directories),
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1270 * we can do things quickly. First, if it's a 4.4BSD file system, the type
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1271 * of the file is in the directory entry. Otherwise, we assume that the number
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1272 * of subdirectories in a node is equal to the number of links to the parent.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1273 * The former skips all stat calls. The latter skips stat calls in any leaf
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1274 * directories and for any files after the subdirectories in the directory have
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1275 * been found, cutting the stat calls by about 2/3.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1276 */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1277 static FTSENT *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1278 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1279 fts_build (register FTS *sp, int type)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1280 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1281 register FTSENT p, head;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1282 register size_t nitems;
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1283 FTSENT *tail;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1284 void *oldaddr;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1285 int saved_errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1286 bool descend;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1287 bool doadjust;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1288 ptrdiff_t level;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1289 nlink_t nlinks;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1290 bool nostat;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1291 size_t len, maxlen, new_len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1292 char *cp;
13676 223800d7ac7d fts, getcwd, glob: audit for dirfd returning -1 Paul Eggert <eggert@cs.ucla.edu> parents: 13674 diff changeset	1293 int dir_fd;
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1294 FTSENT *cur = sp->fts_cur;
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1295 bool continue_readdir = !!cur->fts_dirp;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1296
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1297 /* When cur->fts_dirp is non-NULL, that means we should
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1298 continue calling readdir on that existing DIR* pointer
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1299 rather than opening a new one. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1300 if (continue_readdir)
15526 95cf436ab3b8 maint: fts.c: correct off-by-one indentation Jim Meyering <meyering@redhat.com> parents: 15525 diff changeset	1301 {
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1302 DIR *dp = cur->fts_dirp;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1303 dir_fd = dirfd (dp);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1304 if (dir_fd < 0)
15526 95cf436ab3b8 maint: fts.c: correct off-by-one indentation Jim Meyering <meyering@redhat.com> parents: 15525 diff changeset	1305 {
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1306 closedir_and_clear (cur->fts_dirp);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1307 if (type == BREAD)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1308 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1309 cur->fts_info = FTS_DNR;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1310 cur->fts_errno = errno;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1311 }
15526 95cf436ab3b8 maint: fts.c: correct off-by-one indentation Jim Meyering <meyering@redhat.com> parents: 15525 diff changeset	1312 return NULL;
95cf436ab3b8 maint: fts.c: correct off-by-one indentation Jim Meyering <meyering@redhat.com> parents: 15525 diff changeset	1313 }
95cf436ab3b8 maint: fts.c: correct off-by-one indentation Jim Meyering <meyering@redhat.com> parents: 15525 diff changeset	1314 }
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1315 else
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1316 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1317 /* Open the directory for reading. If this fails, we're done.
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1318 If being called from fts_read, set the fts_info field. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1319 if ((cur->fts_dirp = fts_opendir(cur->fts_accpath, &dir_fd)) == NULL)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1320 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1321 if (type == BREAD)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1322 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1323 cur->fts_info = FTS_DNR;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1324 cur->fts_errno = errno;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1325 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1326 return NULL;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1327 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1328 /* Rather than calling fts_stat for each and every entry encountered
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1329 in the readdir loop (below), stat each directory only right after
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1330 opening it. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1331 if (cur->fts_info == FTS_NSOK)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1332 cur->fts_info = fts_stat(sp, cur, false);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1333 else if (sp->fts_options & FTS_TIGHT_CYCLE_CHECK)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1334 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1335 /* Now read the stat info again after opening a directory to
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1336 reveal eventual changes caused by a submount triggered by
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1337 the traversal. But do it only for utilities which use
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1338 FTS_TIGHT_CYCLE_CHECK. Therefore, only find and du
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1339 benefit/suffer from this feature for now. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1340 LEAVE_DIR (sp, cur, "4");
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1341 fts_stat (sp, cur, false);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1342 if (! enter_dir (sp, cur))
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1343 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1344 __set_errno (ENOMEM);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1345 return NULL;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1346 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1347 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1348 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1349
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1350 /* Maximum number of readdir entries to read at one time. This
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1351 limitation is to avoid reading millions of entries into memory
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1352 at once. When an fts_compar function is specified, we have no
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1353 choice: we must read all entries into memory before calling that
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1354 function. But when no such function is specified, we can read
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1355 entries in batches that are large enough to help us with inode-
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1356 sorting, yet not so large that we risk exhausting memory. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1357 size_t max_entries = (sp->fts_compar == NULL
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1358 ? FTS_MAX_READDIR_ENTRIES : SIZE_MAX);
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1359
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1360 /*
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1361 * Nlinks is the number of possible entries of type directory in the
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1362 * directory if we're cheating on stat calls, 0 if we're not doing
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1363 * any stat calls at all, (nlink_t) -1 if we're statting everything.
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1364 */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1365 if (type == BNAMES) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1366 nlinks = 0;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1367 /* Be quiet about nostat, GCC. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1368 nostat = false;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1369 } else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1370 nlinks = (cur->fts_statp->st_nlink
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1371 - (ISSET(FTS_SEEDOT) ? 0 : 2));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1372 nostat = true;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1373 } else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1374 nlinks = -1;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1375 nostat = false;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1376 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1377
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1378 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1379 * If we're going to need to stat anything or we want to descend
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1380 * and stay in the directory, chdir. If this fails we keep going,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1381 * but set a flag so we don't chdir after the post-order visit.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1382 * We won't be able to stat anything, but we can still return the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1383 * names themselves. Note, that since fts_read won't be able to
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1384 * chdir into the directory, it will have to return different file
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1385 * names than before, i.e. "a/b" instead of "b". Since the node
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1386 * has already been visited in pre-order, have to wait until the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1387 * post-order visit to return the error. There is a special case
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1388 * here, if there was nothing to stat then it's not an error to
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1389 * not be able to stat. This is all fairly nasty. If a program
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1390 * needed sorted entries or stat information, they had better be
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1391 * checking FTS_NS on the returned nodes.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1392 */
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1393 if (continue_readdir)
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1394 {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1395 /* When resuming a short readdir run, we already have
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1396 the required dirp and dir_fd. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1397 descend = true;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1398 }
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1399 else if (nlinks \|\| type == BREAD) {
13676 223800d7ac7d fts, getcwd, glob: audit for dirfd returning -1 Paul Eggert <eggert@cs.ucla.edu> parents: 13674 diff changeset	1400 if (ISSET(FTS_CWDFD))
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1401 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1402 dir_fd = dup (dir_fd);
13671 228e72ae2254 fts: don't operate on an invalid file descriptor after failed dup Jim Meyering <meyering@redhat.com> parents: 13616 diff changeset	1403 if (0 <= dir_fd)
228e72ae2254 fts: don't operate on an invalid file descriptor after failed dup Jim Meyering <meyering@redhat.com> parents: 13616 diff changeset	1404 set_cloexec_flag (dir_fd, true);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1405 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1406 if (dir_fd < 0 \|\| fts_safe_changedir(sp, cur, dir_fd, NULL)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1407 if (nlinks && type == BREAD)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1408 cur->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1409 cur->fts_flags \|= FTS_DONTCHDIR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1410 descend = false;
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1411 closedir_and_clear(cur->fts_dirp);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1412 if (ISSET(FTS_CWDFD) && 0 <= dir_fd)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1413 close (dir_fd);
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1414 cur->fts_dirp = NULL;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1415 } else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1416 descend = true;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1417 } else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1418 descend = false;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1419
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1420 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1421 * Figure out the max file name length that can be stored in the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1422 * current buffer -- the inner loop allocates more space as necessary.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1423 * We really wouldn't have to do the maxlen calculations here, we
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1424 * could do them in fts_read before returning the name, but it's a
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1425 * lot easier here since the length is part of the dirent structure.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1426 *
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1427 * If not changing directories set a pointer so that can just append
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1428 * each new component into the file name.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1429 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1430 len = NAPPEND(cur);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1431 if (ISSET(FTS_NOCHDIR)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1432 cp = sp->fts_path + len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1433 *cp++ = '/';
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1434 } else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1435 /* GCC, you're too verbose. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1436 cp = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1437 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1438 len++;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1439 maxlen = sp->fts_pathlen - len;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1440
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1441 level = cur->fts_level + 1;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1442
16235 18a38c9615f0 In commentary, do not use ` to quote. Paul Eggert <eggert@cs.ucla.edu> parents: 16201 diff changeset	1443 /* Read the directory, attaching each entry to the "link" pointer. */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1444 doadjust = false;
15530 ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1445 head = NULL;
ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1446 tail = NULL;
ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1447 nitems = 0;
ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1448 while (cur->fts_dirp) {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1449 bool is_dir;
15530 ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1450 struct dirent *dp = readdir(cur->fts_dirp);
ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1451 if (dp == NULL)
ddc76c261e25 maint: fts: move decl of `dp' down into while loop; split a long line Jim Meyering <meyering@redhat.com> parents: 15529 diff changeset	1452 break;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1453 if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1454 continue;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1455
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1456 if ((p = fts_alloc (sp, dp->d_name,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1457 _D_EXACT_NAMLEN (dp))) == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1458 goto mem1;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1459 if (_D_EXACT_NAMLEN (dp) >= maxlen) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1460 /* include space for NUL */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1461 oldaddr = sp->fts_path;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1462 if (! fts_palloc(sp, _D_EXACT_NAMLEN (dp) + len + 1)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1463 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1464 * No more memory. Save
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1465 * errno, free up the current structure and the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1466 * structures already allocated.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1467 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1468 mem1: saved_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1469 free(p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1470 fts_lfree(head);
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1471 closedir_and_clear(cur->fts_dirp);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1472 cur->fts_info = FTS_ERR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1473 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1474 __set_errno (saved_errno);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1475 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1476 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1477 /* Did realloc() change the pointer? */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1478 if (oldaddr != sp->fts_path) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1479 doadjust = true;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1480 if (ISSET(FTS_NOCHDIR))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1481 cp = sp->fts_path + len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1482 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1483 maxlen = sp->fts_pathlen - len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1484 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1485
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1486 new_len = len + _D_EXACT_NAMLEN (dp);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1487 if (new_len < len) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1488 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1489 * In the unlikely event that we would end up
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1490 * with a file name longer than SIZE_MAX, free up
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1491 * the current structure and the structures already
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1492 * allocated, then error out with ENAMETOOLONG.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1493 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1494 free(p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1495 fts_lfree(head);
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1496 closedir_and_clear(cur->fts_dirp);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1497 cur->fts_info = FTS_ERR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1498 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1499 __set_errno (ENAMETOOLONG);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1500 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1501 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1502 p->fts_level = level;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1503 p->fts_parent = sp->fts_cur;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1504 p->fts_pathlen = new_len;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1505
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1506 /* Store dirent.d_ino, in case we need to sort
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1507 entries before processing them. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1508 p->fts_statp->st_ino = D_INO (dp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1509
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1510 /* Build a file name for fts_stat to stat. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1511 if (ISSET(FTS_NOCHDIR)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1512 p->fts_accpath = p->fts_path;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1513 memmove(cp, p->fts_name, p->fts_namelen + 1);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1514 } else
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1515 p->fts_accpath = p->fts_name;
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	1516
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1517 if (sp->fts_compar == NULL \|\| ISSET(FTS_DEFER_STAT)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1518 /* Record what fts_read will have to do with this
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1519 entry. In many cases, it will simply fts_stat it,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1520 but we can take advantage of any d_type information
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1521 to optimize away the unnecessary stat calls. I.e.,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1522 if FTS_NOSTAT is in effect and we're not following
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1523 symlinks (FTS_PHYSICAL) and d_type indicates this
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1524 is not a directory, then we won't have to stat it
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1525 at all. If it is a directory, then (currently)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1526 we stat it regardless, in order to get device and
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1527 inode numbers. Some day we might optimize that
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1528 away, too, for directories where d_ino is known to
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1529 be valid. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1530 bool skip_stat = (ISSET(FTS_PHYSICAL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1531 && ISSET(FTS_NOSTAT)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1532 && DT_IS_KNOWN(dp)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1533 && ! DT_MUST_BE(dp, DT_DIR));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1534 p->fts_info = FTS_NSOK;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1535 /* Propagate dirent.d_type information back
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1536 to caller, when possible. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1537 set_stat_type (p->fts_statp, D_TYPE (dp));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1538 fts_set_stat_required(p, !skip_stat);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1539 is_dir = (ISSET(FTS_PHYSICAL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1540 && DT_MUST_BE(dp, DT_DIR));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1541 } else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1542 p->fts_info = fts_stat(sp, p, false);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1543 is_dir = (p->fts_info == FTS_D
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1544 \|\| p->fts_info == FTS_DC
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1545 \|\| p->fts_info == FTS_DOT);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1546 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1547
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1548 /* Decrement link count if applicable. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1549 if (nlinks > 0 && is_dir)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1550 nlinks -= nostat;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1551
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1552 /* We walk in directory order so "ls -f" doesn't get upset. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1553 p->fts_link = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1554 if (head == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1555 head = tail = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1556 else {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1557 tail->fts_link = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1558 tail = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1559 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1560 ++nitems;
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1561 if (max_entries <= nitems) {
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1562 /* When there are too many dir entries, leave
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1563 fts_dirp open, so that a subsequent fts_read
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1564 can take up where we leave off. */
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1565 goto break_without_closedir;
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1566 }
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1567 }
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1568
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1569 if (cur->fts_dirp)
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1570 closedir_and_clear(cur->fts_dirp);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1571
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1572 break_without_closedir:
65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1573
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1574 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1575 * If realloc() changed the address of the file name, adjust the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1576 * addresses for the rest of the tree and the dir list.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1577 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1578 if (doadjust)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1579 fts_padjust(sp, head);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1580
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1581 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1582 * If not changing directories, reset the file name back to original
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1583 * state.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1584 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1585 if (ISSET(FTS_NOCHDIR)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1586 if (len == sp->fts_pathlen \|\| nitems == 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1587 --cp;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1588 *cp = '\0';
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1589 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1590
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1591 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1592 * If descended after called from fts_children or after called from
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1593 * fts_read and nothing found, get back. At the root level we use
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1594 * the saved fd; if one of fts_open()'s arguments is a relative name
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1595 * to an empty directory, we wind up here with no other way back. If
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1596 * can't get back, we're done.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1597 */
15531 65fb6cc5f301 fts: do not exhaust memory when processing million-entry directories Jim Meyering <meyering@redhat.com> parents: 15530 diff changeset	1598 if (!continue_readdir && descend && (type == BCHILD \|\| !nitems) &&
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1599 (cur->fts_level == FTS_ROOTLEVEL
15988 cd7ac59d8eb5 fts: close parent dir FD before returning from post-traversal fts_read Jim Meyering <meyering@redhat.com> parents: 15531 diff changeset	1600 ? restore_initial_cwd(sp)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1601 : fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1602 cur->fts_info = FTS_ERR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1603 SET(FTS_STOP);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1604 fts_lfree(head);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1605 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1606 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1607
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1608 /* If didn't find anything, return NULL. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1609 if (!nitems) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1610 if (type == BREAD)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1611 cur->fts_info = FTS_DP;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1612 fts_lfree(head);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1613 return (NULL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1614 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1615
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1616 /* If there are many entries, no sorting function has been specified,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1617 and this file system is of a type that may be slow with a large
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1618 number of entries, then sort the directory entries on increasing
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1619 inode numbers. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1620 if (nitems > _FTS_INODE_SORT_DIR_ENTRIES_THRESHOLD
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1621 && !sp->fts_compar
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1622 && ISSET (FTS_CWDFD)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1623 && dirent_inode_sort_may_be_useful (sp->fts_cwd_fd)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1624 sp->fts_compar = fts_compare_ino;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1625 head = fts_sort (sp, head, nitems);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1626 sp->fts_compar = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1627 }
10481 47fe4e48e158 fts: sort dirent entries on inode number before traversing Jim Meyering <meyering@redhat.com> parents: 9718 diff changeset	1628
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1629 /* Sort the entries. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1630 if (sp->fts_compar && nitems > 1)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1631 head = fts_sort(sp, head, nitems);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1632 return (head);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1633 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1634
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1635 #if FTS_DEBUG
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1636
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1637 /* Walk ->fts_parent links starting at E_CURR, until the root of the
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1638 current hierarchy. There should be a directory with dev/inode
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1639 matching those of AD. If not, print a lot of diagnostics. */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1640 static void
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1641 find_matching_ancestor (FTSENT const e_curr, struct Active_dir const ad)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1642 {
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1643 FTSENT const *ent;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1644 for (ent = e_curr; ent->fts_level >= FTS_ROOTLEVEL; ent = ent->fts_parent)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1645 {
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1646 if (ad->ino == ent->fts_statp->st_ino
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1647 && ad->dev == ent->fts_statp->st_dev)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1648 return;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1649 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1650 printf ("ERROR: tree dir, %s, not active\n", ad->fts_ent->fts_accpath);
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1651 printf ("active dirs:\n");
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1652 for (ent = e_curr;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1653 ent->fts_level >= FTS_ROOTLEVEL; ent = ent->fts_parent)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1654 printf (" %s(%"PRIuMAX"/%"PRIuMAX") to %s(%"PRIuMAX"/%"PRIuMAX")...\n",
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1655 ad->fts_ent->fts_accpath,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1656 (uintmax_t) ad->dev,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1657 (uintmax_t) ad->ino,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1658 ent->fts_accpath,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1659 (uintmax_t) ent->fts_statp->st_dev,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1660 (uintmax_t) ent->fts_statp->st_ino);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1661 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1662
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1663 void
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1664 fts_cross_check (FTS const *sp)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1665 {
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1666 FTSENT const *ent = sp->fts_cur;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1667 FTSENT const *t;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1668 if ( ! ISSET (FTS_TIGHT_CYCLE_CHECK))
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1669 return;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1670
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1671 Dprintf (("fts-cross-check cur=%s\n", ent->fts_path));
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1672 /* Make sure every parent dir is in the tree. */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1673 for (t = ent->fts_parent; t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1674 {
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1675 struct Active_dir ad;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1676 ad.ino = t->fts_statp->st_ino;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1677 ad.dev = t->fts_statp->st_dev;
6034 96149b1bbb32 (fts_cross_check) [FTS_DEBUG]: s/active_dir_ht/fts_cycle.ht/. Jim Meyering <jim@meyering.net> parents: 5907 diff changeset	1678 if ( ! hash_lookup (sp->fts_cycle.ht, &ad))
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1679 printf ("ERROR: active dir, %s, not in tree\n", t->fts_path);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1680 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1681
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1682 /* Make sure every dir in the tree is an active dir.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1683 But ENT is not necessarily a directory. If so, just skip this part. */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1684 if (ent->fts_parent->fts_level >= FTS_ROOTLEVEL
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1685 && (ent->fts_info == FTS_DP
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1686 \|\| ent->fts_info == FTS_D))
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1687 {
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1688 struct Active_dir *ad;
6034 96149b1bbb32 (fts_cross_check) [FTS_DEBUG]: s/active_dir_ht/fts_cycle.ht/. Jim Meyering <jim@meyering.net> parents: 5907 diff changeset	1689 for (ad = hash_get_first (sp->fts_cycle.ht); ad != NULL;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1690 ad = hash_get_next (sp->fts_cycle.ht, ad))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1691 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1692 find_matching_ancestor (ent, ad);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1693 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1694 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1695 }
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1696
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1697 static bool
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1698 same_fd (int fd1, int fd2)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1699 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1700 struct stat sb1, sb2;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1701 return (fstat (fd1, &sb1) == 0
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1702 && fstat (fd2, &sb2) == 0
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1703 && SAME_INODE (sb1, sb2));
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1704 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1705
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1706 static void
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1707 fd_ring_print (FTS const sp, FILE stream, char const *msg)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1708 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1709 I_ring const *fd_ring = &sp->fts_fd_ring;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1710 unsigned int i = fd_ring->fts_front;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1711 char *cwd = getcwdat (sp->fts_cwd_fd, NULL, 0);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1712 fprintf (stream, "=== %s ========== %s\n", msg, cwd);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1713 free (cwd);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1714 if (i_ring_empty (fd_ring))
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1715 return;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1716
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1717 while (true)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1718 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1719 int fd = fd_ring->fts_fd_ring[i];
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1720 if (fd < 0)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1721 fprintf (stream, "%d: %d:\n", i, fd);
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1722 else
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1723 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1724 char *wd = getcwdat (fd, NULL, 0);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1725 fprintf (stream, "%d: %d: %s\n", i, fd, wd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1726 free (wd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1727 }
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1728 if (i == fd_ring->fts_back)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1729 break;
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1730 i = (i + I_RING_SIZE - 1) % I_RING_SIZE;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1731 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1732 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1733
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1734 /* Ensure that each file descriptor on the fd_ring matches a
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1735 parent, grandparent, etc. of the current working directory. */
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1736 static void
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1737 fd_ring_check (FTS const *sp)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1738 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1739 if (!fts_debug)
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1740 return;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1741
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1742 /* Make a writable copy. */
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1743 I_ring fd_w = sp->fts_fd_ring;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1744
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1745 int cwd_fd = sp->fts_cwd_fd;
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1746 cwd_fd = dup (cwd_fd);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1747 char *dot = getcwdat (cwd_fd, NULL, 0);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1748 error (0, 0, "===== check ===== cwd: %s", dot);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1749 free (dot);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1750 while ( ! i_ring_empty (&fd_w))
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1751 {
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1752 int fd = i_ring_pop (&fd_w);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1753 if (0 <= fd)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1754 {
15374 04a9f678e342 fts: introduce FTS_NOATIME Eric Blake <eblake@redhat.com> parents: 14774 diff changeset	1755 int parent_fd = openat (cwd_fd, "..", O_SEARCH \| O_NOATIME);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1756 if (parent_fd < 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1757 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1758 // Warn?
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1759 break;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1760 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1761 if (!same_fd (fd, parent_fd))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1762 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1763 char *cwd = getcwdat (fd, NULL, 0);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1764 error (0, errno, "ring : %s", cwd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1765 char *c2 = getcwdat (parent_fd, NULL, 0);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1766 error (0, errno, "parent: %s", c2);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1767 free (cwd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1768 free (c2);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1769 fts_assert (0);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1770 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1771 close (cwd_fd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1772 cwd_fd = parent_fd;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1773 }
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1774 }
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1775 close (cwd_fd);
1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	1776 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1777 #endif
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1778
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1779 static unsigned short int
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1780 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1781 fts_stat(FTS sp, register FTSENT p, bool follow)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1782 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1783 struct stat *sbp = p->fts_statp;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1784 int saved_errno;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1785
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1786 if (p->fts_level == FTS_ROOTLEVEL && ISSET(FTS_COMFOLLOW))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1787 follow = true;
7482 26914593f079 Big performance improvement for fts-based tools that use FTS_NOSTAT. Jim Meyering <jim@meyering.net> parents: 7408 diff changeset	1788
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1789 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1790 * If doing a logical walk, or application requested FTS_FOLLOW, do
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1791 * a stat(2). If that fails, check for a non-existent symlink. If
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1792 * fail, set the errno from the stat call.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1793 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1794 if (ISSET(FTS_LOGICAL) \|\| follow) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1795 if (stat(p->fts_accpath, sbp)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1796 saved_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1797 if (errno == ENOENT
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1798 && lstat(p->fts_accpath, sbp) == 0) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1799 __set_errno (0);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1800 return (FTS_SLNONE);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1801 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1802 p->fts_errno = saved_errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1803 goto err;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1804 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1805 } else if (fstatat(sp->fts_cwd_fd, p->fts_accpath, sbp,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1806 AT_SYMLINK_NOFOLLOW)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1807 p->fts_errno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1808 err: memset(sbp, 0, sizeof(struct stat));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1809 return (FTS_NS);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1810 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1811
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1812 if (S_ISDIR(sbp->st_mode)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1813 p->fts_n_dirs_remaining = (sbp->st_nlink
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1814 - (ISSET(FTS_SEEDOT) ? 0 : 2));
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1815 if (ISDOT(p->fts_name)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1816 /* Command-line "." and ".." are real directories. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1817 return (p->fts_level == FTS_ROOTLEVEL ? FTS_D : FTS_DOT);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1818 }
5872 fab6701e5cb2 New fts module. Paul Eggert <eggert@cs.ucla.edu> parents: 5867 diff changeset	1819
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1820 return (FTS_D);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1821 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1822 if (S_ISLNK(sbp->st_mode))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1823 return (FTS_SL);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1824 if (S_ISREG(sbp->st_mode))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1825 return (FTS_F);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1826 return (FTS_DEFAULT);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1827 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1828
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1829 static int
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1830 fts_compar (void const a, void const b)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1831 {
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1832 /* Convert A and B to the correct types, to pacify the compiler, and
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1833 for portability to bizarre hosts where "void const *" and "FTSENT
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1834 const **" differ in runtime representation. The comparison
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1835 function cannot modify a and b, but there is no compile-time
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1836 check for this. */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1837 FTSENT const pa = (FTSENT const ) a;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1838 FTSENT const pb = (FTSENT const ) b;
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1839 return pa[0]->fts_fts->fts_compar (pa, pb);
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1840 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1841
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1842 static FTSENT *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1843 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1844 fts_sort (FTS sp, FTSENT head, register size_t nitems)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1845 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1846 register FTSENT *ap, p;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1847
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1848 /* On most modern hosts, void * and FTSENT ** have the same
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1849 run-time representation, and one can convert sp->fts_compar to
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1850 the type qsort expects without problem. Use the heuristic that
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1851 this is OK if the two pointer types are the same size, and if
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1852 converting FTSENT ** to long int is the same as converting
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1853 FTSENT ** to void * and then to long int. This heuristic isn't
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1854 valid in general but we don't know of any counterexamples. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1855 FTSENT *dummy;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1856 int (compare) (void const , void const *) =
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1857 ((sizeof &dummy == sizeof (void *)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1858 && (long int) &dummy == (long int) (void *) &dummy)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1859 ? (int () (void const , void const *)) sp->fts_compar
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1860 : fts_compar);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1861
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1862 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1863 * Construct an array of pointers to the structures and call qsort(3).
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1864 * Reassemble the array in the order returned by qsort. If unable to
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1865 * sort for memory reasons, return the directory entries in their
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1866 * current order. Allocate enough space for the current needs plus
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1867 * 40 so don't realloc one entry at a time.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1868 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1869 if (nitems > sp->fts_nitems) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1870 FTSENT **a;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1871
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1872 sp->fts_nitems = nitems + 40;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1873 if (SIZE_MAX / sizeof *a < sp->fts_nitems
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1874 \|\| ! (a = realloc (sp->fts_array,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1875 sp->fts_nitems * sizeof *a))) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1876 free(sp->fts_array);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1877 sp->fts_array = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1878 sp->fts_nitems = 0;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1879 return (head);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1880 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1881 sp->fts_array = a;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1882 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1883 for (ap = sp->fts_array, p = head; p; p = p->fts_link)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1884 *ap++ = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1885 qsort((void )sp->fts_array, nitems, sizeof(FTSENT ), compare);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1886 for (head = *(ap = sp->fts_array); --nitems; ++ap)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1887 ap[0]->fts_link = ap[1];
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1888 ap[0]->fts_link = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1889 return (head);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1890 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1891
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1892 static FTSENT *
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1893 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1894 fts_alloc (FTS sp, const char name, register size_t namelen)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1895 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1896 register FTSENT *p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1897 size_t len;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1898
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1899 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1900 * The file name is a variable length array. Allocate the FTSENT
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1901 * structure and the file name in one chunk.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1902 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1903 len = sizeof(FTSENT) + namelen;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1904 if ((p = malloc(len)) == NULL)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1905 return (NULL);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1906
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1907 /* Copy the name and guarantee NUL termination. */
17073 60627a1a95ff fts: when there is no risk of overlap, use memcpy, not memmove Jim Meyering <meyering@redhat.com> parents: 16358 diff changeset	1908 memcpy(p->fts_name, name, namelen);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1909 p->fts_name[namelen] = '\0';
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1910
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1911 p->fts_namelen = namelen;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1912 p->fts_fts = sp;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1913 p->fts_path = sp->fts_path;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1914 p->fts_errno = 0;
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1915 p->fts_dirp = NULL;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1916 p->fts_flags = 0;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1917 p->fts_instr = FTS_NOINSTR;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1918 p->fts_number = 0;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1919 p->fts_pointer = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1920 return (p);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1921 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1922
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1923 static void
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1924 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1925 fts_lfree (register FTSENT *head)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1926 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1927 register FTSENT *p;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1928
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1929 /* Free a linked list of structures. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1930 while ((p = head)) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1931 head = head->fts_link;
15529 894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1932 if (p->fts_dirp)
894e5e6ae541 fts: add/use new struct member, fts_dirp Jim Meyering <meyering@redhat.com> parents: 15528 diff changeset	1933 closedir (p->fts_dirp);
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1934 free(p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1935 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1936 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1937
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1938 /*
5907 c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1939 * Allow essentially unlimited file name lengths; find, rm, ls should
c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1940 * all work on any tree. Most systems will allow creation of file
c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1941 * names much longer than MAXPATHLEN, even though the kernel won't
c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1942 * resolve them. Add the size (not just what's needed) plus 256 bytes
c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1943 * so don't realloc the file name 2 bytes at a time.
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1944 */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1945 static bool
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1946 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1947 fts_palloc (FTS *sp, size_t more)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1948 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1949 char *p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1950 size_t new_len = sp->fts_pathlen + more + 256;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1951
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1952 /*
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1953 * See if fts_pathlen would overflow.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1954 */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1955 if (new_len < sp->fts_pathlen) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1956 free(sp->fts_path);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1957 sp->fts_path = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1958 __set_errno (ENAMETOOLONG);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1959 return false;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1960 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1961 sp->fts_pathlen = new_len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1962 p = realloc(sp->fts_path, sp->fts_pathlen);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1963 if (p == NULL) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1964 free(sp->fts_path);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1965 sp->fts_path = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1966 return false;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1967 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1968 sp->fts_path = p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1969 return true;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1970 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1971
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1972 /*
5907 c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1973 * When the file name is realloc'd, have to fix all of the pointers in
c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	1974 * structures already returned.
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1975 */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1976 static void
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1977 internal_function
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1978 fts_padjust (FTS sp, FTSENT head)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1979 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1980 FTSENT *p;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1981 char *addr = sp->fts_path;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1982
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1983 #define ADJUST(p) do { \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1984 if ((p)->fts_accpath != (p)->fts_name) { \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1985 (p)->fts_accpath = \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1986 (char *)addr + ((p)->fts_accpath - (p)->fts_path); \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1987 } \
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1988 (p)->fts_path = addr; \
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1989 } while (0)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1990 /* Adjust the current set of children. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1991 for (p = sp->fts_child; p; p = p->fts_link)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1992 ADJUST(p);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1993
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1994 /* Adjust the rest of the tree, including the current level. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1995 for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1996 ADJUST(p);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1997 p = p->fts_link ? p->fts_link : p->fts_parent;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	1998 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	1999 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2000
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2001 static size_t
16128 6beadb731202 mark functions with const and pure attributes Jim Meyering <meyering@redhat.com> parents: 15988 diff changeset	2002 internal_function _GL_ATTRIBUTE_PURE
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2003 fts_maxarglen (char * const *argv)
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2004 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2005 size_t len, max;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2006
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2007 for (max = 0; *argv; ++argv)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2008 if ((len = strlen(*argv)) > max)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2009 max = len;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2010 return (max + 1);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2011 }
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2012
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2013 /*
5907 c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	2014 * Change to dir specified by fd or file name without getting
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2015 * tricked by someone changing the world out from underneath us.
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2016 * Assumes p->fts_statp->st_dev and p->fts_statp->st_ino are filled in.
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	2017 * If FD is non-negative, expect it to be used after this function returns,
16235 18a38c9615f0 In commentary, do not use ` to quote. Paul Eggert <eggert@cs.ucla.edu> parents: 16201 diff changeset	2018 * and to be closed eventually. So don't pass e.g., 'dirfd(dirp)' and then
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	2019 * do closedir(dirp), because that would invalidate the saved FD.
43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	2020 * Upon failure, close FD immediately and return nonzero.
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2021 */
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2022 static int
942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2023 internal_function
5907 c47674a83a78 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5894 diff changeset	2024 fts_safe_changedir (FTS sp, FTSENT p, int fd, char const *dir)
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2025 {
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2026 int ret;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2027 bool is_dotdot = dir && STREQ (dir, "..");
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2028 int newfd;
7623 5bfad7d666d6 * lib/fts.c (fts_safe_changedir): Add a comment. Jim Meyering <jim@meyering.net> parents: 7621 diff changeset	2029
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2030 /* This clause handles the unusual case in which FTS_NOCHDIR
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2031 is specified, along with FTS_CWDFD. In that case, there is
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2032 no need to change even the virtual cwd file descriptor.
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2033 However, if FD is non-negative, we do close it here. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2034 if (ISSET (FTS_NOCHDIR))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2035 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2036 if (ISSET (FTS_CWDFD) && 0 <= fd)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2037 close (fd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2038 return 0;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2039 }
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2040
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2041 if (fd < 0 && is_dotdot && ISSET (FTS_CWDFD))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2042 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2043 /* When possible, skip the diropen and subsequent fstat+dev/ino
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2044 comparison. I.e., when changing to parent directory
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2045 (chdir ("..")), use a file descriptor from the ring and
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2046 save the overhead of diropen+fstat, as well as avoiding
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2047 failure when we lack "x" access to the virtual cwd. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2048 if ( ! i_ring_empty (&sp->fts_fd_ring))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2049 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2050 int parent_fd;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2051 fd_ring_print (sp, stderr, "pre-pop");
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2052 parent_fd = i_ring_pop (&sp->fts_fd_ring);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2053 is_dotdot = true;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2054 if (0 <= parent_fd)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2055 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2056 fd = parent_fd;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2057 dir = NULL;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2058 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2059 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2060 }
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	2061
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2062 newfd = fd;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2063 if (fd < 0 && (newfd = diropen (sp, dir)) < 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2064 return -1;
7639 1670d42131d7 Make fts (in FTS_CWDFD mode) more efficient by caching a few open Jim Meyering <jim@meyering.net> parents: 7635 diff changeset	2065
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2066 /* The following dev/inode check is necessary if we're doing a
16235 18a38c9615f0 In commentary, do not use ` to quote. Paul Eggert <eggert@cs.ucla.edu> parents: 16201 diff changeset	2067 "logical" traversal (through symlinks, a la chown -L), if the
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2068 system lacks O_NOFOLLOW support, or if we're changing to ".."
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2069 (but not via a popped file descriptor). When changing to the
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2070 name "..", O_NOFOLLOW can't help. In general, when the target is
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2071 not "..", diropen's use of O_NOFOLLOW ensures we don't mistakenly
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2072 follow a symlink, so we can avoid the expense of this fstat. */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2073 if (ISSET(FTS_LOGICAL) \|\| ! HAVE_WORKING_O_NOFOLLOW
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2074 \|\| (dir && STREQ (dir, "..")))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2075 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2076 struct stat sb;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2077 if (fstat(newfd, &sb))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2078 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2079 ret = -1;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2080 goto bail;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2081 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2082 if (p->fts_statp->st_dev != sb.st_dev
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2083 \|\| p->fts_statp->st_ino != sb.st_ino)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2084 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2085 __set_errno (ENOENT); /* disinformation */
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2086 ret = -1;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2087 goto bail;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2088 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2089 }
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	2090
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2091 if (ISSET(FTS_CWDFD))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2092 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2093 cwd_advance_fd (sp, newfd, ! is_dotdot);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2094 return 0;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2095 }
7151 43e3888c56c4 Update from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 6949 diff changeset	2096
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2097 ret = fchdir(newfd);
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2098 bail:
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2099 if (fd < 0)
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2100 {
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2101 int oerrno = errno;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2102 (void)close(newfd);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2103 __set_errno (oerrno);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2104 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12378 diff changeset	2105 return ret;
5858 942c4d17dd7d New files, from coreutils. Jim Meyering <jim@meyering.net> parents: diff changeset	2106 }

Mercurial > gnulib

annotate lib/fts.c @ 17160:72f4bab621be