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

   1 /* Copyright (C) 2001, 2002, 2003 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <signal.h>
  21 #include <unistd.h>
  22
  23 #include <sysdep-cancel.h>
  24 #include <sys/syscall.h>
  25
  26 /* Change the set of blocked signals to SET,
  27    wait until a signal arrives, and restore the set of blocked signals.  */
  28 int
  29 __sigsuspend (set)
  30      const sigset_t *set;
  31 {
  32   /* XXX The size argument hopefully will have to be changed to the
  33      real size of the user-level sigset_t.  */
  34   if (SINGLE_THREAD_P)
  35     return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8);
  36
  37   int oldtype = LIBC_CANCEL_ASYNC ();
  38
  39   int result = INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8);
  40
  41   LIBC_CANCEL_RESET (oldtype);
  42
  43   return result;
  44 }
  45 libc_hidden_def (__sigsuspend)
  46 weak_alias (__sigsuspend, sigsuspend)
  47 strong_alias (__sigsuspend, __libc_sigsuspend)