libc/signal/sigset-cvt-mask.h

   1 /* Convert between lowlevel sigmask and libc representation of sigset_t.
   2    Linux version.
   3    Copyright (C) 1998, 2002 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    <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef _SIGSET_CVT_MASK_H
  22 #define _SIGSET_CVT_MASK_H
  23
  24 #include <string.h>
  25
  26 static __inline__ void __attribute__ ((unused))
  27 sigset_set_old_mask (sigset_t *set, int mask)
  28 {
  29   if (_SIGSET_NWORDS == 2) /* typical */
  30     set->__val[1] = 0;
  31   if (_SIGSET_NWORDS > 2)
  32     memset(set, 0, sizeof(*set));
  33   set->__val[0] = (unsigned int) mask;
  34 }
  35
  36 static __inline__ int __attribute__ ((unused))
  37 sigset_get_old_mask (const sigset_t *set)
  38 {
  39   return (unsigned int) set->__val[0];
  40 }
  41
  42 #endif