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43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
@node lstat
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@section @code{lstat}
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@findex lstat
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/lstat.html}
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Gnulib module: lstat
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Portability problems fixed by Gnulib:
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@itemize
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@item
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For symlinks, when the argument ends in a slash, some platforms don't
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dereference the argument:
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Solaris 9.
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@item
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On some platforms, @code{lstat("file/",buf)} succeeds instead of
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failing with @code{ENOTDIR}.
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Solaris 9.
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@item
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On Windows platforms (excluding Cygwin), symlinks are not supported, so
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@code{lstat} does not exist.
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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{lstat} may not
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correctly report the size of files or block devices larger than 2 GB. The fix
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is to use the @code{AC_SYS_LARGEFILE} macro.
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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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@item
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On some file systems, @code{st_size} contains bogus information for
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symlinks; use the gnulib module areadlink-with-size for a better way
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to get symlink contents.
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@end itemize
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