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349396ebfc
Like Solaris 9, FreeBSD 7.2 mistakenly allows stat("link-to-file/").
Unlike Solaris, it correctly forbids stat("file/"). A number of
interfaces are affected (such as utimes), but replacing stat is
enough to catch several by reusing the Solaris 9 fixes.
* m4/stat.m4 (gl_FUNC_STAT): Also detect FreeBSD bug with slash on
symlink.
* doc/posix-functions/stat.texi (stat): Document the bug.
* tests/test-stat.h (test_stat_func): Add argument.
* tests/test-stat.c (main): Adjust caller.
* tests/test-fstatat.c (main): Likewise.
* modules/stat-tests (Depends-on): Add stdbool, symlink.
Reported by Jim Meyering.
Signed-off-by: Eric Blake <ebb9@byu.net>
39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
@node stat
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@section @code{stat}
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@findex stat
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POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/stat.html}
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Gnulib module: stat
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Portability problems fixed by Gnulib:
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@itemize
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@item
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On some platforms, @code{stat("link-to-file/",buf)} succeeds instead
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of failing with @code{ENOTDIR}.
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FreeBSD 7.2, Solaris 9.
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@item
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On some platforms, @code{stat(".",buf)} and @code{stat("./",buf)} give
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different results:
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mingw.
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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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On platforms where @code{off_t} is a 32-bit type, @code{stat} may not correctly
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report the size of files or block devices larger than 2 GB. The fix is to
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use the @code{AC_SYS_LARGEFILE} macro.
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@item
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Cygwin's @code{stat} function sometimes sets @code{errno} to @code{EACCES} when
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@code{ENOENT} would be more appropriate.
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@item
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On Windows platforms (excluding Cygwin), @code{st_ino} is always 0.
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@item
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Because of the definition of @code{struct stat}, it is not possible to
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portably replace @code{stat} via an object-like macro. Therefore,
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expressions such as @code{(islnk ? lstat : stat) (name, buf)} are not
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portable, and should instead be written @code{islnk ? lstat (name,
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buf) : stat (name, buf)}.
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@end itemize
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