-/* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003
- Free Software Foundation, Inc.
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#include <sysdep-cancel.h>
#include <sys/syscall.h>
-#include <bp-checks.h>
-
-#include "kernel-features.h"
-
-
-#if !__ASSUME_REALTIME_SIGNALS
-/* The variable is shared between all wrappers around signal handling
- functions which have RT equivalents. The definition is in sigaction.c. */
-extern int __libc_missing_rt_sigs;
-
-
-static int
-do_sigsuspend (const sigset_t *set)
-{
-# ifdef __NR_rt_sigsuspend
- /* First try the RT signals. */
- if (!__libc_missing_rt_sigs)
- {
- /* XXX The size argument hopefully will have to be changed to the
- real size of the user-level sigset_t. */
- int saved_errno = errno;
- int result = INLINE_SYSCALL (rt_sigsuspend, 2,
- CHECK_SIGSET (set), _NSIG / 8);
- if (result >= 0 || errno != ENOSYS)
- return result;
-
- __set_errno (saved_errno);
- __libc_missing_rt_sigs = 1;
- }
-# endif
-
- return INLINE_SYSCALL (sigsuspend, 3, 0, 0, set->__val[0]);
-}
-#endif
/* Change the set of blocked signals to SET,
wait until a signal arrives, and restore the set of blocked signals. */
int
-__sigsuspend (set)
- const sigset_t *set;
+__sigsuspend (const sigset_t *set)
{
-#if __ASSUME_REALTIME_SIGNALS
- if (SINGLE_THREAD_P)
- return INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set), _NSIG / 8);
-
- int oldtype = LIBC_CANCEL_ASYNC ();
-
- int result = INLINE_SYSCALL (rt_sigsuspend, 2, CHECK_SIGSET (set),
- _NSIG / 8);
-
- LIBC_CANCEL_RESET (oldtype);
-
- return result;
-#else
- if (SINGLE_THREAD_P)
- return do_sigsuspend (set);
-
- int oldtype = LIBC_CANCEL_ASYNC ();
-
- int result = do_sigsuspend (set);
-
- LIBC_CANCEL_RESET (oldtype);
-
- return result;
-#endif
+ return SYSCALL_CANCEL (rt_sigsuspend, set, _NSIG / 8);
}
libc_hidden_def (__sigsuspend)
weak_alias (__sigsuspend, sigsuspend)