sysdeps/unix/sysv/linux/ia64/sigsuspend.c

   1 /* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <signal.h>
  22 #include <unistd.h>
  23
  24 #include <sysdep-cancel.h>
  25 #include <sys/syscall.h>
  26 #include <bp-checks.h>
  27
  28 /* Change the set of blocked signals to SET,
  29    wait until a signal arrives, and restore the set of blocked signals.  */
  30 int
  31 __sigsuspend (set)
  32      const sigset_t *set;
  33 {
  34   /* XXX The size argument hopefully will have to be changed to the
  35      real size of the user-level sigset_t.  */
  36   if (SINGLE_THREAD_P)
  37     return INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
  38
  39   int oldtype = LIBC_CANCEL_ASYNC ();
  40
  41   int result = INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
  42
  43   LIBC_CANCEL_RESET (oldtype);
  44
  45   return result;
  46 }
  47 libc_hidden_def (__sigsuspend)
  48 weak_alias (__sigsuspend, sigsuspend)
  49 strong_alias (__sigsuspend, __libc_sigsuspend)