diff options
Diffstat (limited to 'libc/sysdeps/linux/common/sigsuspend.c')
| -rw-r--r-- | libc/sysdeps/linux/common/sigsuspend.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/libc/sysdeps/linux/common/sigsuspend.c b/libc/sysdeps/linux/common/sigsuspend.c index be69c62c2..0e0df6c61 100644 --- a/libc/sysdeps/linux/common/sigsuspend.c +++ b/libc/sysdeps/linux/common/sigsuspend.c @@ -2,31 +2,56 @@ /* * sigsuspend() for uClibc * + * Copyright (C) 2006 by Steven J. Hill <sjhill@realitydiluted.com> * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org> * - * GNU Library General Public License (LGPL) version 2 or later. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include "syscalls.h" #include <signal.h> #undef sigsuspend +libc_hidden_proto(sigsuspend) + #ifdef __NR_rt_sigsuspend -#define __NR___rt_sigsuspend __NR_rt_sigsuspend +# define __NR___rt_sigsuspend __NR_rt_sigsuspend + +# ifdef __UCLIBC_HAS_THREADS_NATIVE__ +# include <errno.h> +# include <sysdep-cancel.h> + +/* Change the set of blocked signals to SET, + wait until a signal arrives, and restore the set of blocked signals. */ +int sigsuspend (const sigset_t *set) +{ + if (SINGLE_THREAD_P) + return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +# else static inline _syscall2(int, __rt_sigsuspend, const sigset_t *, mask, size_t, size); -int attribute_hidden __sigsuspend(const sigset_t * mask) +int sigsuspend(const sigset_t * mask) { return __rt_sigsuspend(mask, _NSIG / 8); } +# endif #else -#define __NR___syscall_sigsuspend __NR_sigsuspend +# define __NR___syscall_sigsuspend __NR_sigsuspend static inline _syscall3(int, __syscall_sigsuspend, int, a, unsigned long int, b, unsigned long int, c); -int attribute_hidden __sigsuspend(const sigset_t * set) +int sigsuspend(const sigset_t * set) { return __syscall_sigsuspend(0, 0, set->__val[0]); } #endif -strong_alias(__sigsuspend,sigsuspend) +libc_hidden_def(sigsuspend) |