+int
+openat_permissive (int fd, char const *file, int flags, mode_t mode,
+ int *cwd_errno)
+{
+ struct saved_cwd saved_cwd;
+ int saved_errno;
+ int err;
+ bool save_ok;
+
+ if (fd == AT_FDCWD || IS_ABSOLUTE_FILE_NAME (file))
+ return open (file, flags, mode);
+
+ {
+ char buf[OPENAT_BUFFER_SIZE];
+ char *proc_file = openat_proc_name (buf, fd, file);
+ if (proc_file)
+ {
+ int open_result = open (proc_file, flags, mode);
+ int open_errno = errno;
+ if (proc_file != buf)
+ free (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 <= open_result || ! EXPECTED_ERRNO (open_errno))
+ {
+ errno = open_errno;
+ return open_result;
+ }
+ }
+ }
+
+ save_ok = (save_cwd (&saved_cwd) == 0);
+ if (! save_ok)