1 /* Copyright (C) 1997, 1998, 1999, 2000, 2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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
24 #include <sys/syscall.h>
25 #include <bp-checks.h>
27 #include "kernel-features.h"
30 /* The variable is shared between all wrappers around signal handling
31 functions which have RT equivalents. The definition is in sigaction.c. */
32 extern int __libc_missing_rt_sigs
;
35 /* Change the set of blocked signals to SET,
36 wait until a signal arrives, and restore the set of blocked signals. */
41 #if __ASSUME_REALTIME_SIGNALS > 0
42 return INLINE_SYSCALL (rt_sigpending
, 2, CHECK_SIGSET (set
), _NSIG
/ 8);
44 # ifdef __NR_rt_sigpending
45 /* First try the RT signals. */
46 if (!__libc_missing_rt_sigs
)
48 /* XXX The size argument hopefully will have to be changed to the
49 real size of the user-level sigset_t. */
50 int saved_errno
= errno
;
51 int result
= INLINE_SYSCALL (rt_sigpending
, 2, CHECK_SIGSET (set
), _NSIG
/ 8);
53 if (result
>= 0 || errno
!= ENOSYS
)
56 __set_errno (saved_errno
);
57 __libc_missing_rt_sigs
= 1;
61 return INLINE_SYSCALL (sigpending
, 1, CHECK_SIGSET (set
));