nptl/pthread_attr_getsigmask.c

   1 /* Obtain the configured signal mask from a POSIX thread attribute.
   2    Copyright (C) 2020-2022 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)