diff options
Diffstat (limited to 'lib/at-func.c')
-rw-r--r-- | lib/at-func.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/lib/at-func.c b/lib/at-func.c deleted file mode 100644 index 2bdea7b93..000000000 --- a/lib/at-func.c +++ /dev/null @@ -1,75 +0,0 @@ -/* Define an at-style functions like fstatat, unlinkat, fchownat, etc. - Copyright (C) 2006 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 2, 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, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -/* written by Jim Meyering */ - -#define CALL_FUNC(F) \ - (AT_FUNC_USE_F1_COND \ - ? AT_FUNC_F1 (F AT_FUNC_POST_FILE_ARGS) \ - : AT_FUNC_F2 (F AT_FUNC_POST_FILE_ARGS)) - -/* Call AT_FUNC_F1 or AT_FUNC_F2 (testing AT_FUNC_USE_F1_COND to - determine which) to operate on FILE, which is in the directory - open on descriptor FD. If possible, do it without changing the - working directory. Otherwise, resort to using save_cwd/fchdir, - then AT_FUNC_F?/restore_cwd. If either the save_cwd or the restore_cwd - fails, then give a diagnostic and exit nonzero. */ -int -AT_FUNC_NAME (int fd, char const *file AT_FUNC_POST_FILE_PARAM_DECLS) -{ - struct saved_cwd saved_cwd; - int saved_errno; - int err; - - if (fd == AT_FDCWD || IS_ABSOLUTE_FILE_NAME (file)) - return CALL_FUNC (file); - - { - char *proc_file; - BUILD_PROC_NAME (proc_file, fd, file); - err = CALL_FUNC (proc_file); - /* If the syscall succeeds, or if it fails with an unexpected - errno value, then return right away. Otherwise, fall through - and resort to using save_cwd/restore_cwd. */ - if (0 <= err || ! EXPECTED_ERRNO (errno)) - return err; - } - - if (save_cwd (&saved_cwd) != 0) - openat_save_fail (errno); - - if (fchdir (fd) != 0) - { - saved_errno = errno; - free_cwd (&saved_cwd); - errno = saved_errno; - return -1; - } - - err = CALL_FUNC (file); - saved_errno = (err < 0 ? errno : 0); - - if (restore_cwd (&saved_cwd) != 0) - openat_restore_fail (errno); - - free_cwd (&saved_cwd); - - if (saved_errno) - errno = saved_errno; - return err; -} -#undef CALL_FUNC |