1 /* __pthread_mutex_checklocked.  Hurd version.
2    Copyright (C) 2016-2022 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library;  if not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #include <pthread.h>
20 #include <stdlib.h>
21 #include <assert.h>
22 #include <pt-internal.h>
23 #include "pt-mutex.h"
24 #include <hurdlock.h>
25 
26 int
__pthread_mutex_checklocked(pthread_mutex_t * mtxp)27 __pthread_mutex_checklocked (pthread_mutex_t *mtxp)
28 {
29   int ret = 0;
30 
31   switch (MTX_TYPE (mtxp))
32     {
33     case PT_MTX_NORMAL:
34       break;
35 
36     case PT_MTX_RECURSIVE:
37     case PT_MTX_ERRORCHECK:
38     case PT_MTX_NORMAL | PTHREAD_MUTEX_ROBUST:
39     case PT_MTX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
40     case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
41       if (!mtx_owned_p (mtxp, _pthread_self (), mtxp->__flags))
42 	ret = EPERM;
43       break;
44 
45     default:
46       ret = EINVAL;
47       break;
48     }
49 
50   return ret;
51 }
52