sysdeps/unix/sysv/linux/sigset-cvt-mask.h

   1 /* Convert between lowlevel sigmask and libc representation of sigset_t.
   2    Linux version.
   3    Copyright (C) 1998-2020 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Joe Keane <jgk@jgk.org>.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, see
  19    <https://www.gnu.org/licenses/>.  */
  20
  21 static inline int __attribute__ ((unused))
  22 sigset_set_old_mask (sigset_t *set, int mask)
  23 {
  24   unsigned long int *ptr;
  25   int cnt;
  26
  27   ptr = &set->__val[0];
  28
  29   *ptr++ = (unsigned int) mask;
  30
  31   cnt = _SIGSET_NWORDS - 2;
  32   do
  33     *ptr++ = 0ul;
  34   while (--cnt >= 0);
  35
  36   return 0;
  37 }
  38
  39 static inline int __attribute__ ((unused))
  40 sigset_get_old_mask (const sigset_t *set)
  41 {
  42   return (unsigned int) set->__val[0];
  43 }