nptl/pthread_attr_setsigmask_internal.c

   1 /* Set the signal mask in a POSIX thread attribute.  Internal variant.
   2    Copyright (C) 2020-2021 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 #include <internal-signals.h>
  21
  22 int
  23 __pthread_attr_setsigmask_internal (pthread_attr_t *attr,
  24                                     const sigset_t *sigmask)
  25 {
  26   struct pthread_attr *iattr = (struct pthread_attr *) attr;
  27
  28   if (sigmask == NULL)
  29     {
  30       /* Mark the signal mask as unset if it is present.  */
  31       if (iattr->extension != NULL)
  32         iattr->extension->sigmask_set = false;
  33       return 0;
  34     }
  35
  36   int ret = __pthread_attr_extension (iattr);
  37   if (ret != 0)
  38     return ret;
  39
  40   iattr->extension->sigmask = *sigmask;
  41   iattr->extension->sigmask_set = true;
  42
  43   return 0;
  44 }
  45 libc_hidden_def (__pthread_attr_setsigmask_internal)