sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c

   1 /* Copyright (C) 2001-2014 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 /* 64 bit Linux for S/390 only has rt signals, thus we do not even want to try
  19    falling back to the old style signals as the default Linux handler does. */
  20
  21 #include <errno.h>
  22 #include <signal.h>
  23 #include <string.h>
  24
  25 #include <sysdep.h>
  26 #include <sys/syscall.h>
  27
  28 /* The variable is shared between all wrappers around signal handling
  29    functions which have RT equivalents.  This is the definition.  */
  30
  31
  32 /* If ACT is not NULL, change the action for SIG to *ACT.
  33    If OACT is not NULL, put the old action for SIG in *OACT.  */
  34 int
  35 __libc_sigaction (sig, act, oact)
  36      int sig;
  37      const struct sigaction *act;
  38      struct sigaction *oact;
  39 {
  40   /* XXX The size argument hopefully will have to be changed to the
  41      real size of the user-level sigset_t.  */
  42   return INLINE_SYSCALL (rt_sigaction, 4, sig, act, oact, _NSIG / 8);
  43 }
  44 libc_hidden_def (__libc_sigaction)
  45
  46 #ifdef WRAPPER_INCLUDE
  47 # include WRAPPER_INCLUDE
  48 #endif
  49
  50 #ifndef LIBC_SIGACTION
  51 weak_alias (__libc_sigaction, __sigaction)
  52 libc_hidden_weak (__sigaction)
  53 weak_alias (__libc_sigaction, sigaction)
  54 #endif