sysdeps/unix/sysv/linux/x86_64/sigprocmask.c

   1 /* Copyright (C) 1997-2000, 2003, 2012 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 /* Linux/x86_64 only has rt signals, thus we do not even want to try falling
  20    back to the old style signals as the default Linux handler does. */
  21
  22 #include <errno.h>
  23 #include <signal.h>
  24 #include <unistd.h>
  25
  26 #include <sysdep.h>
  27 #include <sys/syscall.h>
  28 #include <bp-checks.h>
  29
  30 /* Get and/or change the set of blocked signals.  */
  31 int
  32 __sigprocmask (how, set, oset)
  33      int how;
  34      const sigset_t *set;
  35      sigset_t *oset;
  36 {
  37
  38   /* XXX The size argument hopefully will have to be changed to the
  39      real size of the user-level sigset_t.  */
  40   return INLINE_SYSCALL (rt_sigprocmask, 4, how, CHECK_SIGSET (set),
  41                         CHECK_SIGSET_NULL_OK (oset), _NSIG / 8);
  42 }
  43 weak_alias (__sigprocmask, sigprocmask)