1  /* Copyright (C) 1997-2023 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 <signal.h>
      19  #include <pthreadP.h>              /* SIGCANCEL, SIGSETXID */
      20  
      21  /* Get and/or change the set of blocked signals.  */
      22  int
      23  __sigprocmask (int how, const sigset_t *set, sigset_t *oset)
      24  {
      25    int result = __pthread_sigmask (how, set, oset);
      26    if (result == 0)
      27      return 0;
      28    __set_errno (result);
      29    return -1;
      30  }
      31  libc_hidden_def (__sigprocmask)
      32  weak_alias (__sigprocmask, sigprocmask)