gnulib: lib/fseeko.c annotate

annotate lib/fseeko.c @ 17363:5a51fb7777a9

sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Tue, 19 Mar 2013 09:08:47 -0700
parents	e542fd46ad6f
children	161070f4cae7

rev	line source
8883 84c04df874fd Typo in comment. Bruno Haible <bruno@clisp.org> parents: 8872 diff changeset	1 /* An fseeko() function that, together with fflush(), is POSIX compliant.
17249 e542fd46ad6f maint: update all copyright year number ranges Eric Blake <eblake@redhat.com> parents: 16935 diff changeset	2 Copyright (C) 2007-2013 Free Software Foundation, Inc.
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	3
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	4 This program is free software; you can redistribute it and/or modify
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	5 it under the terms of the GNU General Public License as published by
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	6 the Free Software Foundation; either version 2, or (at your option)
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	7 any later version.
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	8
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	9 This program is distributed in the hope that it will be useful,
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	10 but WITHOUT ANY WARRANTY; without even the implied warranty of
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	12 GNU General Public License for more details.
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	13
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	14 You should have received a copy of the GNU General Public License along
16366 bb182ee4a09d maint: replace FSF snail-mail addresses with URLs Paul Eggert <eggert@cs.ucla.edu> parents: 16344 diff changeset	15 with this program; if not, see <http://www.gnu.org/licenses/>. */
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	16
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	17 #include <config.h>
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	18
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	19 /* Specification. */
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	20 #include <stdio.h>
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	21
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	22 /* Get off_t and lseek. */
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	23 #include <unistd.h>
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	24
9980 2c1ba629f5d5 New private include file lib/stdio-impl.h. Bruno Haible <bruno@clisp.org> parents: 9928 diff changeset	25 #include "stdio-impl.h"
2c1ba629f5d5 New private include file lib/stdio-impl.h. Bruno Haible <bruno@clisp.org> parents: 9928 diff changeset	26
13121 472aa3de0fbb fseeko: Fix C++ test error on mingw. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	27 int
472aa3de0fbb fseeko: Fix C++ test error on mingw. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	28 fseeko (FILE *fp, off_t offset, int whence)
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	29 #undef fseeko
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	30 #if !HAVE_FSEEKO
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	31 # undef fseek
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	32 # define fseeko fseek
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	33 #endif
16795 6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	34 #if _GL_WINDOWS_64_BIT_OFF_T
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	35 # undef fseeko
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	36 # if HAVE__FSEEKI64 /* msvc, mingw64 */
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	37 # define fseeko _fseeki64
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	38 # else /* mingw */
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	39 # define fseeko fseeko64
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	40 # endif
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	41 #endif
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	42 {
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	43 #if LSEEK_PIPE_BROKEN
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	44 /* mingw gives bogus answers rather than failure on non-seekable files. */
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	45 if (lseek (fileno (fp), 0, SEEK_CUR) == -1)
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	46 return EOF;
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	47 #endif
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: 8868 diff changeset	48
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	49 /* These tests are based on fpurge.c. */
10780 5c7a68d31801 Add support for Haiku. Bruno Haible <bruno@clisp.org> parents: 9981 diff changeset	50 #if defined _IO_ftrylockfile \|\| __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	51 if (fp->_IO_read_end == fp->_IO_read_ptr
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	52 && fp->_IO_write_ptr == fp->_IO_write_base
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	53 && fp->_IO_save_base == NULL)
16935 498a2211d839 Write "Mac OS X" instead of "MacOS X". Bruno Haible <bruno@clisp.org> parents: 16795 diff changeset	54 #elif defined __sferror \|\| defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
8868 90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	55 # if defined __SL64 && defined __SCLE /* Cygwin */
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	56 if ((fp->_flags & __SL64) == 0)
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	57 {
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	58 /* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	59 mode; but has an fseeko that requires 64-bit mode. */
8868 90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	60 FILE *tmp = fopen ("/dev/null", "r");
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	61 if (!tmp)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	62 return -1;
8868 90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	63 fp->_flags \|= __SL64;
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	64 fp->_seek64 = tmp->_seek64;
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	65 fclose (tmp);
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	66 }
90e71310a07f Fix fseeko/ftello on cygwin 1.5.24. Eric Blake <ebb9@byu.net> parents: 8759 diff changeset	67 # endif
9981 e3d6988a9347 Add tentative support for DragonFly BSD. Bruno Haible <bruno@clisp.org> parents: 9980 diff changeset	68 if (fp_->_p == fp_->_bf._base
e3d6988a9347 Add tentative support for DragonFly BSD. Bruno Haible <bruno@clisp.org> parents: 9980 diff changeset	69 && fp_->_r == 0
e3d6988a9347 Add tentative support for DragonFly BSD. Bruno Haible <bruno@clisp.org> parents: 9980 diff changeset	70 && fp_->_w == ((fp_->_flags & (__SLBF \| __SNBF \| __SRD)) == 0 /* fully buffered and not currently reading? */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	71 ? fp_->_bf._size
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	72 : 0)
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	73 && fp_ub._base == NULL)
9881 e21211210418 Port the extended stdio functions to emx+gcc. Bruno Haible <bruno@clisp.org> parents: 9876 diff changeset	74 #elif defined __EMX__ /* emx+gcc */
e21211210418 Port the extended stdio functions to emx+gcc. Bruno Haible <bruno@clisp.org> parents: 9876 diff changeset	75 if (fp->_ptr == fp->_buffer
e21211210418 Port the extended stdio functions to emx+gcc. Bruno Haible <bruno@clisp.org> parents: 9876 diff changeset	76 && fp->_rcount == 0
e21211210418 Port the extended stdio functions to emx+gcc. Bruno Haible <bruno@clisp.org> parents: 9876 diff changeset	77 && fp->_wcount == 0
e21211210418 Port the extended stdio functions to emx+gcc. Bruno Haible <bruno@clisp.org> parents: 9876 diff changeset	78 && fp->_ungetc_count == 0)
15485 20a2699b8a90 stdioext: Add support for Minix. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	79 #elif defined __minix /* Minix */
20a2699b8a90 stdioext: Add support for Minix. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	80 if (fp_->_ptr == fp_->_buf
20a2699b8a90 stdioext: Add support for Minix. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	81 && (fp_->_ptr == NULL \|\| fp_->_count == 0))
13997 6fa9f46e6153 Port extended stdio modules to HP NonStop Kernel. Bruno Haible <bruno@clisp.org> parents: 13121 diff changeset	82 #elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	83 if (fp_->_ptr == fp_->_base
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	84 && (fp_->_ptr == NULL \|\| fp_->_cnt == 0))
8926 1d4c80b053f0 Add support for uClibc 0.9.29. Bruno Haible <bruno@clisp.org> parents: 8883 diff changeset	85 #elif defined __UCLIBC__ /* uClibc */
1d4c80b053f0 Add support for uClibc 0.9.29. Bruno Haible <bruno@clisp.org> parents: 8883 diff changeset	86 if (((fp->__modeflags & __FLAG_WRITING) == 0
1d4c80b053f0 Add support for uClibc 0.9.29. Bruno Haible <bruno@clisp.org> parents: 8883 diff changeset	87 \|\| fp->__bufpos == fp->__bufstart)
1d4c80b053f0 Add support for uClibc 0.9.29. Bruno Haible <bruno@clisp.org> parents: 8883 diff changeset	88 && ((fp->__modeflags & (__FLAG_READONLY \| __FLAG_READING)) == 0
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	89 \|\| fp->__bufpos == fp->__bufread))
9280 a1f6fe4c68c1 Add support for QNX (untested). Bruno Haible <bruno@clisp.org> parents: 9155 diff changeset	90 #elif defined __QNX__ /* QNX */
11732 867a6671ca00 Make fseeko.c compile on QNX. Matt Kraai <mkraai@beckman.com> parents: 11242 diff changeset	91 if ((fp->_Mode & 0x2000 /* _MWRITE */ ? fp->_Next == fp->_Buf : fp->_Next == fp->_Rend)
9280 a1f6fe4c68c1 Add support for QNX (untested). Bruno Haible <bruno@clisp.org> parents: 9155 diff changeset	92 && fp->_Rback == fp->_Back + sizeof (fp->_Back)
a1f6fe4c68c1 Add support for QNX (untested). Bruno Haible <bruno@clisp.org> parents: 9155 diff changeset	93 && fp->_Rsave == NULL)
11236 d4475bf2a2bf Add tentative support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11017 diff changeset	94 #elif defined __MINT__ /* Atari FreeMiNT */
d4475bf2a2bf Add tentative support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11017 diff changeset	95 if (fp->__bufp == fp->__buffer
d4475bf2a2bf Add tentative support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11017 diff changeset	96 && fp->__get_limit == fp->__bufp
d4475bf2a2bf Add tentative support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11017 diff changeset	97 && fp->__put_limit == fp->__bufp
d4475bf2a2bf Add tentative support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11017 diff changeset	98 && !fp->__pushed_back)
16344 ecfc57537d99 stdioext: Add tentative support for Plan9. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	99 #elif defined EPLAN9 /* Plan9 */
ecfc57537d99 stdioext: Add tentative support for Plan9. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	100 if (fp->rp == fp->buf
ecfc57537d99 stdioext: Add tentative support for Plan9. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	101 && fp->wp == fp->buf)
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	102 #else
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	103 #error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib."
aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	104 #endif
8717 3afefd650c3a On BSD implementations, when we call lseek(), we must also update or disable Bruno Haible <bruno@clisp.org> parents: 8713 diff changeset	105 {
15506 72af71b55124 fseeko: remove unneeded hack Eric Blake <eblake@redhat.com> parents: 15505 diff changeset	106 /* We get here when an fflush() call immediately preceded this one (or
72af71b55124 fseeko: remove unneeded hack Eric Blake <eblake@redhat.com> parents: 15505 diff changeset	107 if ftell() has created buffers but no I/O has occurred on a
72af71b55124 fseeko: remove unneeded hack Eric Blake <eblake@redhat.com> parents: 15505 diff changeset	108 newly-opened stream). We know there are no buffers. */
72af71b55124 fseeko: remove unneeded hack Eric Blake <eblake@redhat.com> parents: 15505 diff changeset	109 off_t pos = lseek (fileno (fp), offset, whence);
8717 3afefd650c3a On BSD implementations, when we call lseek(), we must also update or disable Bruno Haible <bruno@clisp.org> parents: 8713 diff changeset	110 if (pos == -1)
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	111 {
16935 498a2211d839 Write "Mac OS X" instead of "MacOS X". Bruno Haible <bruno@clisp.org> parents: 16795 diff changeset	112 #if defined __sferror \|\| defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	113 fp_->_flags &= ~__SOFF;
8717 3afefd650c3a On BSD implementations, when we call lseek(), we must also update or disable Bruno Haible <bruno@clisp.org> parents: 8713 diff changeset	114 #endif
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	115 return -1;
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 11732 diff changeset	116 }
11017 95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	117
95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	118 #if defined _IO_ftrylockfile \|\| __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	119 fp->_flags &= ~_IO_EOF_SEEN;
15505 225d7e86ab78 fseeko: fix bug on glibc Eric Blake <eblake@redhat.com> parents: 15485 diff changeset	120 fp->_offset = pos;
16935 498a2211d839 Write "Mac OS X" instead of "MacOS X". Bruno Haible <bruno@clisp.org> parents: 16795 diff changeset	121 #elif defined __sferror \|\| defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
12459 717d6fde6006 fflush: tweak Bruno Haible <bruno@clisp.org> parents: 12452 diff changeset	122 # if defined __CYGWIN__
717d6fde6006 fflush: tweak Bruno Haible <bruno@clisp.org> parents: 12452 diff changeset	123 /* fp_->_offset is typed as an integer. */
717d6fde6006 fflush: tweak Bruno Haible <bruno@clisp.org> parents: 12452 diff changeset	124 fp_->_offset = pos;
717d6fde6006 fflush: tweak Bruno Haible <bruno@clisp.org> parents: 12452 diff changeset	125 # else
717d6fde6006 fflush: tweak Bruno Haible <bruno@clisp.org> parents: 12452 diff changeset	126 /* fp_->_offset is an fpos_t. */
12452 cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	127 {
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	128 /* Use a union, since on NetBSD, the compilation flags
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	129 determine whether fpos_t is typedef'd to off_t or a struct
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	130 containing a single off_t member. */
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	131 union
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	132 {
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	133 fpos_t f;
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	134 off_t o;
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	135 } u;
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	136 u.o = pos;
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	137 fp_->_offset = u.f;
cc0faab513a7 fflush: avoid compilation error on NetBSD Eric Blake <ebb9@byu.net> parents: 12421 diff changeset	138 }
12459 717d6fde6006 fflush: tweak Bruno Haible <bruno@clisp.org> parents: 12452 diff changeset	139 # endif
11017 95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	140 fp_->_flags \|= __SOFF;
95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	141 fp_->_flags &= ~__SEOF;
9881 e21211210418 Port the extended stdio functions to emx+gcc. Bruno Haible <bruno@clisp.org> parents: 9876 diff changeset	142 #elif defined __EMX__ /* emx+gcc */
11017 95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	143 fp->_flags &= ~_IOEOF;
13997 6fa9f46e6153 Port extended stdio modules to HP NonStop Kernel. Bruno Haible <bruno@clisp.org> parents: 13121 diff changeset	144 #elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
11017 95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	145 fp->_flag &= ~_IOEOF;
11242 4a120b892043 More support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11236 diff changeset	146 #elif defined __MINT__ /* Atari FreeMiNT */
4a120b892043 More support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11236 diff changeset	147 fp->__offset = pos;
4a120b892043 More support for FreeMiNT. Bruno Haible <bruno@clisp.org> parents: 11236 diff changeset	148 fp->__eof = 0;
8717 3afefd650c3a On BSD implementations, when we call lseek(), we must also update or disable Bruno Haible <bruno@clisp.org> parents: 8713 diff changeset	149 #endif
15506 72af71b55124 fseeko: remove unneeded hack Eric Blake <eblake@redhat.com> parents: 15505 diff changeset	150 return 0;
8717 3afefd650c3a On BSD implementations, when we call lseek(), we must also update or disable Bruno Haible <bruno@clisp.org> parents: 8713 diff changeset	151 }
11017 95eb3a6eb21d Make fflush-after-ungetc POSIX compliant on glibc systems. Bruno Haible <bruno@clisp.org> parents: 10780 diff changeset	152 return fseeko (fp, offset, whence);
8713 aad7ea346fbf Make the combination of fflush and fseek/fseeko POSIX compliant. Bruno Haible <bruno@clisp.org> parents: diff changeset	153 }

Mercurial > gnulib

annotate lib/fseeko.c @ 17363:5a51fb7777a9