hurd: Factorize at/non-at functions

Non-at functions can be implemented by just calling the corresponding at
function with AT_FDCWD and zero at_flags.

In the linkat case, the at behavior is different (O_NOLINK), so this introduces
__linkat_common to pass O_NOLINK as appropriate.

lstat functions can also be implemented with fstatat by adding
__fstatat64_common which takes a flags parameter in addition to the at_flags
parameter,

In the end this factorizes chmod, chown, link, lstat64, mkdir, readlink,
rename, stat64, symlink, unlink, utimes.

This also makes __lstat, __lxstat64, __stat and __xstat64 directly use
__fstatat64_common instead of __lstat64 or __stat64.

1 files changed, 3 insertions, 11 deletions

diff --git a/sysdeps/mach/hurd/lstat64.c b/sysdeps/mach/hurd/lstat64.c
index 55ce1552b3..d67daf9f61 100644
--- a/sysdeps/mach/hurd/lstat64.c
+++ b/sysdeps/mach/hurd/lstat64.c
@@ -21,21 +21,13 @@
 #include <fcntl.h>
 #include <hurd.h>
 
+#include <fstatat_common.h>
+
 /* Get information about the file descriptor FD in BUF.  */
 int
 __lstat64 (const char *file, struct stat64 *buf)
 {
-  error_t err;
-  file_t port;
-
-  port = __file_name_lookup (file, O_NOLINK, 0);
-  if (port == MACH_PORT_NULL)
-    return -1;
-  err = __io_stat (port, buf);
-  __mach_port_deallocate (__mach_task_self (), port);
-  if (err)
-    return __hurd_fail (err);
-  return 0;
+  return __fstatat64_common (AT_FDCWD, file, buf, 0, O_NOLINK);
 }
 hidden_def (__lstat64)
 weak_alias (__lstat64, lstat64)