Hash :
599a6645
Author :
Date :
2011-07-26T02:48:03
Add dependencies to the 'largefile' module. * modules/fopen (Depends-on): Add 'largefile'. * modules/freopen (Depends-on): Likewise. * modules/fseeko (Depends-on): Likewise. * modules/ftello (Depends-on): Likewise. * modules/glob (Depends-on): Likewise. * modules/lseek (Depends-on): Likewise. * modules/lstat (Depends-on): Likewise. * modules/mkostemp (Depends-on): Likewise. * modules/mkostemps (Depends-on): Likewise. * modules/mkstemp (Depends-on): Likewise. * modules/mkstemps (Depends-on): Likewise. * modules/open (Depends-on): Likewise. * modules/openat (Depends-on): Likewise. * modules/pread (Depends-on): Likewise. * modules/pwrite (Depends-on): Likewise. * modules/scandir (Depends-on): Likewise. * modules/stat (Depends-on): Likewise. * modules/tmpfile (Depends-on): Likewise. * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): Do not require AC_SYS_LARGEFILE, since the containing module now depends on the largefile module. * m4/tempname.m4 (gl_FUNC_GEN_TEMPNAME): Likewise. * doc/posix-functions/fopen.texi: Mention that the problem of 32-bit off_t is fixed by gnulib. * doc/posix-functions/freopen.texi: Likewise. * doc/posix-functions/fseeko.texi: Likewise. * doc/posix-functions/fstatat.texi: Likewise. * doc/posix-functions/ftello.texi: Likewise. * doc/posix-functions/glob.texi: Likewise. * doc/posix-functions/lseek.texi: Likewise. * doc/posix-functions/lstat.texi: Likewise. * doc/posix-functions/mkstemp.texi: Likewise. * doc/posix-functions/open.texi: Likewise. * doc/posix-functions/openat.texi: Likewise. * doc/posix-functions/pread.texi: Likewise. * doc/posix-functions/pwrite.texi: Likewise. * doc/posix-functions/scandir.texi: Likewise. * doc/posix-functions/stat.texi: Likewise. * doc/posix-functions/tmpfile.texi: Likewise. * doc/glibc-functions/mkostemp.texi: Likewise. * doc/glibc-functions/mkostemps.texi: Likewise. * doc/glibc-functions/mkstemps.texi: Likewise.
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@node lstat
@section @code{lstat}
@findex lstat
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/lstat.html}
Gnulib module: lstat
Portability problems fixed by Gnulib:
@itemize
@item
On platforms where @code{off_t} is a 32-bit type, @code{lstat} may not
correctly report the size of files or block devices larger than 2 GB.
(Cf. @code{AC_SYS_LARGEFILE}.)
@item
For symlinks, when the argument ends in a slash, some platforms don't
dereference the argument:
Solaris 9.
@item
On some platforms, @code{lstat("file/",buf)} succeeds instead of
failing with @code{ENOTDIR}.
Solaris 9.
@item
On Windows platforms (excluding Cygwin), symlinks are not supported, so
@code{lstat} does not exist.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
On Windows platforms (excluding Cygwin), @code{st_ino} is always 0.
@item
Because of the definition of @code{struct stat}, it is not possible to
portably replace @code{stat} via an object-like macro. Therefore,
expressions such as @code{(islnk ? lstat : stat) (name, buf)} are not
portable, and should instead be written @code{islnk ? lstat (name,
buf) : stat (name, buf)}.
@item
On some file systems, @code{st_size} contains bogus information for
symlinks; use the gnulib module areadlink-with-size for a better way
to get symlink contents.
@end itemize