signal/sigfillset.c

   1 /* Copyright (C) 1991-2015 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    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <signal.h>
  20 #include <string.h>
  21
  22 /* Set all signals in SET.  */
  23 int
  24 sigfillset (set)
  25      sigset_t *set;
  26 {
  27   if (set == NULL)
  28     {
  29       __set_errno (EINVAL);
  30       return -1;
  31     }
  32
  33   memset (set, 0xff, sizeof (sigset_t));
  34
  35   /* If the implementation uses a cancellation signal don't set the bit.  */
  36 #ifdef SIGCANCEL
  37   __sigdelset (set, SIGCANCEL);
  38 #endif
  39   /* Likewise for the signal to implement setxid.  */
  40 #ifdef SIGSETXID
  41   __sigdelset (set, SIGSETXID);
  42 #endif
  43
  44   return 0;
  45 }
  46 libc_hidden_def (sigfillset)