ports/sysdeps/unix/sysv/linux/ia64/sigaction.c

   1 /* Copyright (C) 1997-2000,2002,2003,2005 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Linux/IA64 specific sigaction
   4    Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* Linux/ia64 only has rt signals, thus we do not even want to try falling
  21    back to the old style signals as the default Linux handler does. */
  22
  23 #include <errno.h>
  24 #include <signal.h>
  25 #include <string.h>
  26
  27 #include <sysdep.h>
  28 #include <sys/syscall.h>
  29 #include <bp-checks.h>
  30
  31 /* The variable is shared between all wrappers around signal handling
  32    functions which have RT equivalents.  This is the definition.  */
  33
  34
  35 /* If ACT is not NULL, change the action for SIG to *ACT.
  36    If OACT is not NULL, put the old action for SIG in *OACT.  */
  37 int
  38 __libc_sigaction (sig, act, oact)
  39      int sig;
  40      const struct sigaction *act;
  41      struct sigaction *oact;
  42 {
  43   /* XXX The size argument hopefully will have to be changed to the
  44      real size of the user-level sigset_t.  */
  45   return INLINE_SYSCALL (rt_sigaction, 4, sig,
  46                          CHECK_1_NULL_OK (act), CHECK_1_NULL_OK (oact), _NSIG / 8);
  47 }
  48 libc_hidden_def (__libc_sigaction)
  49
  50 #ifdef WRAPPER_INCLUDE
  51 # include WRAPPER_INCLUDE
  52 #endif
  53
  54 #ifndef LIBC_SIGACTION
  55 weak_alias (__libc_sigaction, __sigaction)
  56 libc_hidden_def (__sigaction)
  57 weak_alias (__libc_sigaction, sigaction)
  58 #endif