mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
220a9ecba1
This incorporates: 2018-01-01 maint: Run 'make update-copyright' 2017-12-29 Add cross-compilation results for GNU/Hurd. 2017-12-12 explicit_bzero: port to macOS + Clang 9.0.0
124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/* provide a replacement openat function
|
|
Copyright (C) 2004-2006, 2008-2018 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_FCHOWNAT
|
|
|
|
# ifndef FCHOWNAT_INLINE
|
|
# define FCHOWNAT_INLINE _GL_INLINE
|
|
# endif
|
|
|
|
FCHOWNAT_INLINE int
|
|
chownat (int fd, char const *file, uid_t owner, gid_t group)
|
|
{
|
|
return fchownat (fd, file, owner, group, 0);
|
|
}
|
|
|
|
FCHOWNAT_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_FCHMODAT
|
|
|
|
# ifndef FCHMODAT_INLINE
|
|
# define FCHMODAT_INLINE _GL_INLINE
|
|
# endif
|
|
|
|
FCHMODAT_INLINE int
|
|
chmodat (int fd, char const *file, mode_t mode)
|
|
{
|
|
return fchmodat (fd, file, mode, 0);
|
|
}
|
|
|
|
FCHMODAT_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 */
|