hurd: Implement faccessat without AT_EACCESS flag

* hurd/hurd/fd.h: Include <fcntl.h>
(__hurd_at_flags): New function.
* hurd/lookup-at.c (__file_name_lookup_at): Replace flag computation
with call to __hurd_at_flags.
* include/unistd.h (__faccessat, __faccessat_noerrno): Add declaration.
* sysdeps/mach/hurd/access.c (access_common): Move implementation to
__faccessat
(hurd_fail_seterrno, hurd_fail_noerrno): Move to sysdeps/mach/hurd/faccessat.c.
(__access_noerrno): Use __faccessat_common instead of access_common.
(__access): Likewise.
* sysdeps/mach/hurd/euidaccess.c (__euidaccess): Replace implementation
with a call to __faccessat.
* sysdeps/mach/hurd/faccessat.c (faccessat): Rename into...
(__faccessat_common): ... this. Move implementation of __access into it when
AT_FLAGS does not contain AT_EACCESS. Make it call __hurd_at_flags, add
reauthenticate_cwdir_at helper to implement AT mechanism.
(__faccessat_noerrno): New function, just calls __faccessat_common.
(__faccessat): New function, just calls __faccessat_common.
(faccessat): Define weak alias.

1 files changed, 1 insertions, 30 deletions

diff --git a/sysdeps/mach/hurd/euidaccess.c b/sysdeps/mach/hurd/euidaccess.c
index 613872a207..2c7ce1f2b6 100644
--- a/sysdeps/mach/hurd/euidaccess.c
+++ b/sysdeps/mach/hurd/euidaccess.c
@@ -16,42 +16,13 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
-#include <stddef.h>
 #include <unistd.h>
 #include <fcntl.h>
-#include <hurd.h>
 
 int
 __euidaccess (const char *file, int type)
 {
-  error_t err;
-  file_t port;
-  int allowed, flags;
-
-  port = __file_name_lookup (file, 0, 0);
-  if (port == MACH_PORT_NULL)
-    return -1;
-
-  /* Find out what types of access we are allowed to this file.  */
-  err = __file_check_access (port, &allowed);
-  __mach_port_deallocate (__mach_task_self (), port);
-  if (err)
-    return __hurd_fail (err);
-
-  flags = 0;
-  if (type & R_OK)
-    flags |= O_READ;
-  if (type & W_OK)
-    flags |= O_WRITE;
-  if (type & X_OK)
-    flags |= O_EXEC;
-
-  if (flags & ~allowed)
-    /* We are not allowed all the requested types of access.  */
-    return __hurd_fail (EACCES);
-
-  return 0;
+  return __faccessat (AT_FDCWD, file, type, AT_EACCESS);
 }
 weak_alias (__euidaccess, euidaccess)
 weak_alias (__euidaccess, eaccess)