view doc/posix-functions/lstat.texi @ 13776:2285cf35fa15

docs: update cygwin progress * doc/glibc-functions/mkostemp.texi (mkostemp): Added in cygwin 1.7.6. * doc/glibc-functions/mkostemps.texi (mkostemps): Likewise. * doc/posix-headers/fenv.texi (fenv.h): Added after cygwin 1.7.7. * doc/posix-functions/feclearexcept.texi (feclearexcept): Likewise. * doc/posix-functions/fegetenv.texi (fegetenv): Likewise. * doc/posix-functions/fegetexceptflag.texi (fegetexceptflag): Likewise. * doc/posix-functions/fegetround.texi (fegetround): Likewise. * doc/posix-functions/feholdexcept.texi (feholdexcept): Likewise. * doc/posix-functions/feraiseexcept.texi (feraiseexcept): Likewise. * doc/posix-functions/fesetenv.texi (fesetenv): Likewise. * doc/posix-functions/fesetexceptflag.texi (fesetexceptflag): Likewise. * doc/posix-functions/fesetround.texi (fesetround): Likewise. * doc/posix-functions/fetestexcept.texi (fetestexcept): Likewise. * doc/posix-functions/feupdateenv.texi (feupdateenv): Likewise. * doc/glibc-functions/feenableexcept.texi (feenableexcept): Likewise. * doc/glibc-functions/fedisableexcept.texi (fedisableexcept): Likewise. * doc/glibc-functions/fegetexcept.texi (fegetexcept): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Thu, 07 Oct 2010 08:42:24 -0600
parents bb0ceefd22dc
children 51231c56c0a1
line wrap: on
line source

@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
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 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.  The fix
is to use the @code{AC_SYS_LARGEFILE} macro.
@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