1  /* Copyright (C) 2002-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <string.h>
      19  #include <pthreadP.h>
      20  #include <shlib-compat.h>
      21  
      22  int
      23  ___pthread_mutexattr_init (pthread_mutexattr_t *attr)
      24  {
      25    ASSERT_TYPE_SIZE (pthread_mutexattr_t, __SIZEOF_PTHREAD_MUTEXATTR_T);
      26    ASSERT_PTHREAD_INTERNAL_SIZE (pthread_mutexattr_t,
      27  				struct pthread_mutexattr);
      28  
      29    if (sizeof (struct pthread_mutexattr) != sizeof (pthread_mutexattr_t))
      30      memset (attr, '\0', sizeof (*attr));
      31  
      32    /* We use bit 31 to signal whether the mutex is going to be
      33       process-shared or not.  By default it is zero, i.e., the mutex is
      34       not process-shared.  */
      35    ((struct pthread_mutexattr *) attr)->mutexkind = PTHREAD_MUTEX_NORMAL;
      36  
      37    return 0;
      38  }
      39  versioned_symbol (libc, ___pthread_mutexattr_init,
      40  		  pthread_mutexattr_init, GLIBC_2_34);
      41  libc_hidden_ver (___pthread_mutexattr_init, __pthread_mutexattr_init)
      42  #ifndef SHARED
      43  strong_alias (___pthread_mutexattr_init, __pthread_mutexattr_init)
      44  #endif
      45  
      46  #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
      47  compat_symbol (libpthread, ___pthread_mutexattr_init,
      48  	       pthread_mutexattr_init, GLIBC_2_0);
      49  compat_symbol (libpthread, ___pthread_mutexattr_init,
      50  	       __pthread_mutexattr_init, GLIBC_2_0);
      51  #endif