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/* provide a replacement openat function
Copyright (C) 2004-2006, 2008-2020 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Jim Meyering */
#ifndef _GL_HEADER_OPENAT
#define _GL_HEADER_OPENAT
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdbool.h>
#ifndef _GL_INLINE_HEADER_BEGIN
#error "Please include config.h first."
#endif
_GL_INLINE_HEADER_BEGIN
#if !HAVE_OPENAT
int openat_permissive (int fd, char const *file, int flags, mode_t mode,
int *cwd_errno);
bool openat_needs_fchdir (void);
#else
# define openat_permissive(Fd, File, Flags, Mode, Cwd_errno) \
openat (Fd, File, Flags, Mode)
# define openat_needs_fchdir() false
#endif
_Noreturn void openat_restore_fail (int);
_Noreturn void openat_save_fail (int);
/* Using these function names makes application code
slightly more readable than it would be with
fchownat (..., 0) or fchownat (..., AT_SYMLINK_NOFOLLOW). */
#if GNULIB_CHOWNAT
# ifndef CHOWNAT_INLINE
# define CHOWNAT_INLINE _GL_INLINE
# endif
CHOWNAT_INLINE int
chownat (int fd, char const *file, uid_t owner, gid_t group)
{
return fchownat (fd, file, owner, group, 0);
}
CHOWNAT_INLINE int
lchownat (int fd, char const *file, uid_t owner, gid_t group)
{
return fchownat (fd, file, owner, group, AT_SYMLINK_NOFOLLOW);
}
#endif
#if GNULIB_CHMODAT
# ifndef CHMODAT_INLINE
# define CHMODAT_INLINE _GL_INLINE
# endif
CHMODAT_INLINE int
chmodat (int fd, char const *file, mode_t mode)
{
return fchmodat (fd, file, mode, 0);
}
CHMODAT_INLINE int
lchmodat (int fd, char const *file, mode_t mode)
{
return fchmodat (fd, file, mode, AT_SYMLINK_NOFOLLOW);
}
#endif
#if GNULIB_STATAT
# ifndef STATAT_INLINE
# define STATAT_INLINE _GL_INLINE
# endif
STATAT_INLINE int
statat (int fd, char const *name, struct stat *st)
{
return fstatat (fd, name, st, 0);
}
STATAT_INLINE int
lstatat (int fd, char const *name, struct stat *st)
{
return fstatat (fd, name, st, AT_SYMLINK_NOFOLLOW);
}
#endif
/* For now, there are no wrappers named laccessat or leuidaccessat,
since gnulib doesn't support faccessat(,AT_SYMLINK_NOFOLLOW) and
since access rights on symlinks are of limited utility. Likewise,
wrappers are not provided for accessat or euidaccessat, so as to
avoid dragging in -lgen on some platforms. */
_GL_INLINE_HEADER_END
#endif /* _GL_HEADER_OPENAT */
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