1  /* __pthread_mutex_checklocked.  Hurd version.
       2     Copyright (C) 2016-2023 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
      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  }