octave-shane/gnulib-hg: m4/chown.m4 annotate

annotate m4/chown.m4 @ 10649:aafc4daf1581

open-safer.c: avoid 'signed and unsigned in conditional...' warning * lib/open-safer.c (open_safer): Use an "if/else" statement in place of the ternary operator. Reported by Reuben Thomas <rrt@sc3d.org>.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Thu, 16 Oct 2008 21:48:54 +0200
parents	51d32a83a7df
children	f6cba5a556ce

rev	line source
8199 51d32a83a7df Move more declarations into <unistd.h>. Bruno Haible <bruno@clisp.org> parents: 6275 diff changeset	1 #serial 17
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
8199 51d32a83a7df Move more declarations into <unistd.h>. Bruno Haible <bruno@clisp.org> parents: 6275 diff changeset	4 dnl Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2007 Free
5591 487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	5 dnl Software Foundation, Inc.
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
5016 7141ea4946af Change jm_ to gl_ in AC_DEFINE'd names. Update all uses. Jim Meyering <jim@meyering.net> parents: 4108 diff changeset	17 AC_DEFUN([gl_FUNC_CHOWN],
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	18 [
8199 51d32a83a7df Move more declarations into <unistd.h>. Bruno Haible <bruno@clisp.org> parents: 6275 diff changeset	19 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	20 AC_REQUIRE([AC_TYPE_UID_T])
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	21 AC_REQUIRE([AC_FUNC_CHOWN])
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	22 AC_REQUIRE([gl_FUNC_CHOWN_FOLLOWS_SYMLINK])
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	23
5871 8b95519c71b9 * lib/chown.c (rpl_chown): Return -1 on failure. Paul Eggert <eggert@cs.ucla.edu> parents: 5591 diff changeset	24 if test $ac_cv_func_chown_works = no; then
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	25 AC_DEFINE(CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE, 1,
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	26 [Define if chown is not POSIX compliant regarding IDs of -1.])
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	27 fi
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	28
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	29 # If chown has either of the above problems, then we need the wrapper.
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	30 if test $ac_cv_func_chown_works$gl_cv_func_chown_follows_symlink = yesyes; then
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	31 : # no wrapper needed
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	32 else
8199 51d32a83a7df Move more declarations into <unistd.h>. Bruno Haible <bruno@clisp.org> parents: 6275 diff changeset	33 REPLACE_CHOWN=1
2685 d4ea46c69b9f fix typo in last change Jim Meyering <jim@meyering.net> parents: 2683 diff changeset	34 AC_LIBOBJ(chown)
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	35 gl_PREREQ_CHOWN
889 e9739f52a325 . Jim Meyering <jim@meyering.net> parents: diff changeset	36 fi
e9739f52a325 . Jim Meyering <jim@meyering.net> parents: diff changeset	37 ])
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	38
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	39 # Determine whether chown follows symlinks (it should).
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	40 AC_DEFUN([gl_FUNC_CHOWN_FOLLOWS_SYMLINK],
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	41 [
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	42 AC_CACHE_CHECK(
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	43 [whether chown(2) dereferences symlinks],
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	44 gl_cv_func_chown_follows_symlink,
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	45 [
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	46 AC_RUN_IFELSE([AC_LANG_SOURCE([[
6275 fd0ccce602e4 Sync from coreutils. Paul Eggert <eggert@cs.ucla.edu> parents: 5956 diff changeset	47 #include <unistd.h>
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	48 #include <stdlib.h>
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	49 #include <errno.h>
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	50
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	51 int
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	52 main ()
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	53 {
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	54 char const *dangling_symlink = "conftest.dangle";
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	55
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	56 unlink (dangling_symlink);
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	57 if (symlink ("conftest.no-such", dangling_symlink))
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	58 abort ();
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	59
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	60 /* Exit successfully on a conforming system,
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	61 i.e., where chown must fail with ENOENT. */
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	62 exit ( ! (chown (dangling_symlink, getuid (), getgid ()) != 0
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	63 && errno == ENOENT));
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	64 }
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	65 ]])],
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	66 [gl_cv_func_chown_follows_symlink=yes],
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	67 [gl_cv_func_chown_follows_symlink=no],
5591 487bb44907f4 (gl_FUNC_CHOWN): When cross-compiling, assume that chown Paul Eggert <eggert@cs.ucla.edu> parents: 5078 diff changeset	68 [gl_cv_func_chown_follows_symlink=yes]
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	69 )
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	70 ]
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	71 )
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	72
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	73 if test $gl_cv_func_chown_follows_symlink = no; then
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	74 AC_DEFINE(CHOWN_MODIFIES_SYMLINK, 1,
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	75 [Define if chown modifies symlinks.])
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	76 fi
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	77 ])
146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	78
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	79 # Prerequisites of lib/chown.c.
c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	80 AC_DEFUN([gl_PREREQ_CHOWN],
c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	81 [
5078 146129232fe0 Merge from coreutils CVS. Paul Eggert <eggert@cs.ucla.edu> parents: 5016 diff changeset	82 AC_CHECK_FUNC([fchown], , [AC_LIBOBJ(fchown-stub)])
4108 c1d472db5c30 An independent .m4 file for each module. Bruno Haible <bruno@clisp.org> parents: 3486 diff changeset	83 ])

Mercurial > hg > octave-shane > gnulib-hg

annotate m4/chown.m4 @ 10649:aafc4daf1581