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9cd8acbae7
Solaris 9 and FreeBSD 7.2 chown("link-to-file/",uid,gid)
mistakenly changes ownership of "file".
* lib/chown.c (rpl_chown): Work around bug.
* m4/chown.m4 (gl_FUNC_CHOWN): Check for trailing slash bugs.
(gl_PREREQ_CHOWN): Delete.
* m4/unistd_h.m4 (gl_UNISTD_H_DEFAULTS): Add witness.
* modules/unistd (Makefile.am): Populate it.
* lib/unistd.in.h (chown): Update declaration.
* lib/lchown.c (chown): Update client.
* modules/lchown (Depends-on): Add lstat.
* doc/posix-functions/chown.texi (chown): Document the bug.
* doc/posix-functions/getgroups.texi (getgroups): Document
getgroups pitfall.
* modules/chown-tests: New file.
* tests/test-chown.h (test_chown): Likewise.
* tests/test-chown.c (main): Likewise.
Signed-off-by: Eric Blake <ebb9@byu.net>
35 lines
1.0 KiB
Plaintext
35 lines
1.0 KiB
Plaintext
@node getgroups
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@section @code{getgroups}
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@findex getgroups
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POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getgroups.html}
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Gnulib module: getgroups
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Portability problems fixed by Gnulib:
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@itemize
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@item
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This function is missing on some platforms:
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mingw.
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@item
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On some platforms, this function fails to reject a negative count,
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even though that is less than the size that would be returned:
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FreeBSD 7.2.
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@item
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On Ultrix 4.3, @code{getgroups (0, NULL)} always fails. See macro
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@samp{AC_FUNC_GETGROUPS}.
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@item
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On very old systems, this function operated on an array of @samp{int},
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even though that was a different size than an array of @samp{gid_t}.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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It is unspecified whether the effective group id will be included in
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the returned list, nor whether the list will be sorted in any
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particular order. For that matter, some platforms include the
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effective group id twice, if it is also a member of the current
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supplemental group ids.
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@end itemize
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