1 /* Copyright (C) 1997, 1998, 1999, 2000 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"
29 extern int __syscall_sigpending (sigset_t
*__unbounded
);
30 extern int __syscall_rt_sigpending (sigset_t
*__unbounded
, size_t);
33 /* The variable is shared between all wrappers around signal handling
34 functions which have RT equivalents. The definition is in sigaction.c. */
35 extern int __libc_missing_rt_sigs
;
38 /* Change the set of blocked signals to SET,
39 wait until a signal arrives, and restore the set of blocked signals. */
44 #if __ASSUME_REALTIME_SIGNALS > 0
45 return INLINE_SYSCALL (rt_sigpending
, 2, CHECK_SIGSET (set
), _NSIG
/ 8);
47 # ifdef __NR_rt_sigpending
48 /* First try the RT signals. */
49 if (!__libc_missing_rt_sigs
)
51 /* XXX The size argument hopefully will have to be changed to the
52 real size of the user-level sigset_t. */
53 int saved_errno
= errno
;
54 int result
= INLINE_SYSCALL (rt_sigpending
, 2, CHECK_SIGSET (set
), _NSIG
/ 8);
56 if (result
>= 0 || errno
!= ENOSYS
)
59 __set_errno (saved_errno
);
60 __libc_missing_rt_sigs
= 1;
64 return INLINE_SYSCALL (sigpending
, 1, CHECK_SIGSET (set
));