1  /* Obtain the configured signal mask from a POSIX thread attribute.
       2     Copyright (C) 2020-2023 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 <pthreadP.h>
      20  
      21  int
      22  __pthread_attr_getsigmask_np (const pthread_attr_t *attr, sigset_t *sigmask)
      23  {
      24    struct pthread_attr *iattr = (struct pthread_attr *) attr;
      25  
      26    if (iattr->extension == NULL || !iattr->extension->sigmask_set)
      27      {
      28        __sigemptyset (sigmask);
      29        return PTHREAD_ATTR_NO_SIGMASK_NP;
      30      }
      31    else
      32      {
      33        *sigmask = iattr->extension->sigmask;
      34        return 0;
      35      }
      36  }
      37  libc_hidden_def (__pthread_attr_getsigmask_np)
      38  weak_alias (__pthread_attr_getsigmask_np, pthread_attr_getsigmask_np)