gnulib: m4/chown.m4 annotate

annotate m4/chown.m4 @ 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	344018b6e5d7

rev	line source
16813 9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	1 # serial 27
5591 487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	2 # Determine whether we need the chown wrapper.
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	3
17249 e542fd46ad6f maint: update all copyright year number ranges Eric Blake <eblake@redhat.com> parents: 16813 diff changeset	4 dnl Copyright (C) 1997-2001, 2003-2005, 2007, 2009-2013 Free Software
12559 c2cbabec01dd update nearly all FSF copyright year lists to include 2010 Jim Meyering <meyering@redhat.com> parents: 12518 diff changeset	5 dnl Foundation, Inc.
5591 487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	6
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	7 dnl This file is free software; the Free Software Foundation
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	8 dnl gives unlimited permission to copy and/or distribute it,
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	9 dnl with or without modifications, as long as this notice is preserved.
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	10
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	11 # chown should accept arguments of -1 for uid and gid, and it should
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	12 # dereference symlinks. If it doesn't, arrange to use the replacement
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	13 # function.
487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	14
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	15 # From Jim Meyering.
889 e9739f52a325 . Jim Meyering <jim@meyering.net> parents: diff changeset	16
16813 9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	17 m4_version_prereq([2.70], [] ,[
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	18
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	19 # This is taken from the following Autoconf patch:
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	20 # http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=7fbb553727ed7e0e689a17594b58559ecf3ea6e9
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	21 AC_DEFUN([AC_FUNC_CHOWN],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	22 [
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	23 AC_REQUIRE([AC_TYPE_UID_T])dnl
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	24 AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	25 AC_CHECK_HEADERS([unistd.h])
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	26 AC_CACHE_CHECK([for working chown],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	27 [ac_cv_func_chown_works],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	28 [AC_RUN_IFELSE(
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	29 [AC_LANG_PROGRAM(
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	30 [AC_INCLUDES_DEFAULT
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	31 [#include <fcntl.h>
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	32 ]],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	33 [[
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	34 char *f = "conftest.chown";
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	35 struct stat before, after;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	36
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	37 if (creat (f, 0600) < 0)
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	38 return 1;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	39 if (stat (f, &before) < 0)
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	40 return 1;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	41 if (chown (f, (uid_t) -1, (gid_t) -1) == -1)
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	42 return 1;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	43 if (stat (f, &after) < 0)
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	44 return 1;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	45 return ! (before.st_uid == after.st_uid && before.st_gid == after.st_gid);
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	46 ]])
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	47 ],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	48 [ac_cv_func_chown_works=yes],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	49 [ac_cv_func_chown_works=no],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	50 [case "$host_os" in # ((
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	51 # Guess yes on glibc systems.
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	52 -gnu) ac_cv_func_chown_works=yes ;;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	53 # If we don't know, assume the worst.
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	54 *) ac_cv_func_chown_works=no ;;
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	55 esac
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	56 ])
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	57 rm -f conftest.chown
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	58 ])
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	59 if test $ac_cv_func_chown_works = yes; then
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	60 AC_DEFINE([HAVE_CHOWN], [1],
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	61 [Define to 1 if your system has a working `chown' function.])
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	62 fi
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	63 ])# AC_FUNC_CHOWN
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	64
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	65 ])
9a21d15ea645 chown: Avoid "guessing no" when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16811 diff changeset	66
12298 6cb1877033fc better AC_REQUIRE expanded-before-required-warning avoidance Jim Meyering <meyering@redhat.com> parents: 12289 diff changeset	67 AC_DEFUN_ONCE([gl_FUNC_CHOWN],
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	68 [
8199 51d32a83a7df Move more declarations into <unistd.h>. Bruno Haible <bruno@clisp.org> parents: 6275 diff changeset	69 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	70 AC_REQUIRE([AC_TYPE_UID_T])
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	71 AC_REQUIRE([AC_FUNC_CHOWN])
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	72 AC_REQUIRE([gl_FUNC_CHOWN_FOLLOWS_SYMLINK])
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	73 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	74 AC_CHECK_FUNCS_ONCE([chown fchown])
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	75
12314 e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	76 dnl mingw lacks chown altogether.
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	77 if test $ac_cv_func_chown = no; then
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	78 HAVE_CHOWN=0
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	79 else
12314 e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	80 dnl Some old systems treated chown like lchown.
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	81 if test $gl_cv_func_chown_follows_symlink = no; then
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	82 REPLACE_CHOWN=1
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	83 fi
12314 e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	84
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	85 dnl Some old systems tried to use uid/gid -1 literally.
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	86 if test $ac_cv_func_chown_works = no; then
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	87 AC_DEFINE([CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE], [1],
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	88 [Define if chown is not POSIX compliant regarding IDs of -1.])
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	89 REPLACE_CHOWN=1
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	90 fi
12314 e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	91
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	92 dnl Solaris 9 ignores trailing slash.
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	93 dnl FreeBSD 7.2 mishandles trailing slash on symlinks.
13489 e8f90629eda6 chown: Update doc regarding AIX. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	94 dnl Likewise for AIX 7.1.
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	95 AC_CACHE_CHECK([whether chown honors trailing slash],
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	96 [gl_cv_func_chown_slash_works],
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	97 [touch conftest.file && rm -f conftest.link
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	98 AC_RUN_IFELSE([AC_LANG_PROGRAM([[
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	99 #include <unistd.h>
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	100 #include <stdlib.h>
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	101 #include <errno.h>
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	102 ]], [[ if (symlink ("conftest.file", "conftest.link")) return 1;
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	103 if (chown ("conftest.link/", getuid (), getgid ()) == 0) return 2;
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	104 ]])],
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	105 [gl_cv_func_chown_slash_works=yes],
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	106 [gl_cv_func_chown_slash_works=no],
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	107 [case "$host_os" in
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	108 # Guess yes on glibc systems.
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	109 -gnu) gl_cv_func_chown_slash_works="guessing yes" ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	110 # If we don't know, assume the worst.
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	111 *) gl_cv_func_chown_slash_works="guessing no" ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	112 esac
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	113 ])
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	114 rm -f conftest.link conftest.file])
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	115 case "$gl_cv_func_chown_slash_works" in
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	116 *yes) ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	117 *)
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	118 AC_DEFINE([CHOWN_TRAILING_SLASH_BUG], [1],
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	119 [Define to 1 if chown mishandles trailing slash.])
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	120 REPLACE_CHOWN=1
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	121 ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	122 esac
12314 e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	123
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	124 dnl OpenBSD fails to update ctime if ownership does not change.
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	125 AC_CACHE_CHECK([whether chown always updates ctime],
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	126 [gl_cv_func_chown_ctime_works],
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	127 [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	128 #include <unistd.h>
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	129 #include <stdlib.h>
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	130 #include <errno.h>
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	131 #include <fcntl.h>
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	132 #include <sys/stat.h>
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	133 ]], [[ struct stat st1, st2;
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	134 if (close (creat ("conftest.file", 0600))) return 1;
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	135 if (stat ("conftest.file", &st1)) return 2;
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	136 sleep (1);
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	137 if (chown ("conftest.file", st1.st_uid, st1.st_gid)) return 3;
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	138 if (stat ("conftest.file", &st2)) return 4;
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	139 if (st2.st_ctime <= st1.st_ctime) return 5;
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	140 ]])],
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	141 [gl_cv_func_chown_ctime_works=yes],
e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	142 [gl_cv_func_chown_ctime_works=no],
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	143 [case "$host_os" in
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	144 # Guess yes on glibc systems.
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	145 -gnu) gl_cv_func_chown_ctime_works="guessing yes" ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	146 # If we don't know, assume the worst.
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	147 *) gl_cv_func_chown_ctime_works="guessing no" ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	148 esac
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	149 ])
12314 e92d9385e4ca chown: work around OpenBSD bug Eric Blake <ebb9@byu.net> parents: 12298 diff changeset	150 rm -f conftest.file])
16811 b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	151 case "$gl_cv_func_chown_ctime_works" in
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	152 *yes) ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	153 *)
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	154 AC_DEFINE([CHOWN_CHANGE_TIME_BUG], [1], [Define to 1 if chown fails
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	155 to change ctime when at least one argument was not -1.])
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	156 REPLACE_CHOWN=1
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	157 ;;
b187fc49964b Avoid "guessing no" guesses when cross-compiling to glibc systems. Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	158 esac
889 e9739f52a325 . Jim Meyering <jim@meyering.net> parents: diff changeset	159 fi
e9739f52a325 . Jim Meyering <jim@meyering.net> parents: diff changeset	160 ])
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	161
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	162 # Determine whether chown follows symlinks (it should).
12298 6cb1877033fc better AC_REQUIRE expanded-before-required-warning avoidance Jim Meyering <meyering@redhat.com> parents: 12289 diff changeset	163 AC_DEFUN_ONCE([gl_FUNC_CHOWN_FOLLOWS_SYMLINK],
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	164 [
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	165 AC_CACHE_CHECK(
12289 e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	166 [whether chown dereferences symlinks],
e973be2fb39f chown: detect Solaris and FreeBSD bug Eric Blake <ebb9@byu.net> parents: 11920 diff changeset	167 [gl_cv_func_chown_follows_symlink],
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	168 [
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	169 AC_RUN_IFELSE([AC_LANG_SOURCE([[
6275 fd0ccce602e4 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5956 diff changeset	170 #include <unistd.h>
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	171 #include <stdlib.h>
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	172 #include <errno.h>
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	173
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	174 int
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	175 main ()
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	176 {
13918 d5a74c6ec06b Put more information about failed tests into the test return codes. Bruno Haible <bruno@clisp.org> parents: 13489 diff changeset	177 int result = 0;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	178 char const *dangling_symlink = "conftest.dangle";
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	179
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	180 unlink (dangling_symlink);
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	181 if (symlink ("conftest.no-such", dangling_symlink))
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	182 abort ();
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	183
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	184 /* Exit successfully on a conforming system,
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	185 i.e., where chown must fail with ENOENT. */
13918 d5a74c6ec06b Put more information about failed tests into the test return codes. Bruno Haible <bruno@clisp.org> parents: 13489 diff changeset	186 if (chown (dangling_symlink, getuid (), getgid ()) == 0)
d5a74c6ec06b Put more information about failed tests into the test return codes. Bruno Haible <bruno@clisp.org> parents: 13489 diff changeset	187 result \|= 1;
d5a74c6ec06b Put more information about failed tests into the test return codes. Bruno Haible <bruno@clisp.org> parents: 13489 diff changeset	188 if (errno != ENOENT)
d5a74c6ec06b Put more information about failed tests into the test return codes. Bruno Haible <bruno@clisp.org> parents: 13489 diff changeset	189 result \|= 2;
d5a74c6ec06b Put more information about failed tests into the test return codes. Bruno Haible <bruno@clisp.org> parents: 13489 diff changeset	190 return result;
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	191 }
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	192 ]])],
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	193 [gl_cv_func_chown_follows_symlink=yes],
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	194 [gl_cv_func_chown_follows_symlink=no],
e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 12314 diff changeset	195 [gl_cv_func_chown_follows_symlink=yes]
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	196 )
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	197 ]
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	198 )
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	199
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	200 if test $gl_cv_func_chown_follows_symlink = no; then
11007 f6cba5a556ce many .m4 files: improve m4 quoting Jim Meyering <meyering@redhat.com>* parents: 8199 diff changeset	201 AC_DEFINE([CHOWN_MODIFIES_SYMLINK], [1],
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	202 [Define if chown modifies symlinks.])
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	203 fi
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	204 ])

Mercurial > gnulib

annotate m4/chown.m4 @ 17363:5a51fb7777a9