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 <errno.h>
      19  #include <pthreadP.h>
      20  #include <futex-internal.h>
      21  #include <shlib-compat.h>
      22  
      23  int
      24  __pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, int pshared)
      25  {
      26    struct pthread_mutexattr *iattr;
      27  
      28    int err = futex_supports_pshared (pshared);
      29    if (err != 0)
      30      return err;
      31  
      32    iattr = (struct pthread_mutexattr *) attr;
      33  
      34    if (pshared == PTHREAD_PROCESS_PRIVATE)
      35      iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_PSHARED;
      36    else
      37      iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_PSHARED;
      38  
      39    return 0;
      40  }
      41  versioned_symbol (libc, __pthread_mutexattr_setpshared,
      42                    pthread_mutexattr_setpshared, GLIBC_2_34);
      43  
      44  #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
      45  compat_symbol (libpthread, __pthread_mutexattr_setpshared,
      46                 pthread_mutexattr_setpshared, GLIBC_2_2);
      47  #endif