diff options
Diffstat (limited to 'libc/sysdeps/linux/common/pause.c')
| -rw-r--r-- | libc/sysdeps/linux/common/pause.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/libc/sysdeps/linux/common/pause.c b/libc/sysdeps/linux/common/pause.c index 751b6b6a9..74115b281 100644 --- a/libc/sysdeps/linux/common/pause.c +++ b/libc/sysdeps/linux/common/pause.c @@ -7,22 +7,25 @@ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ -#define __UCLIBC_HIDE_DEPRECATED__ -#include "syscalls.h" -#include <unistd.h> - -extern __typeof(pause) __libc_pause; -#ifdef __NR_pause -#define __NR___libc_pause __NR_pause -_syscall0(int, __libc_pause); -#else #include <signal.h> -libc_hidden_proto(__sigpause) -libc_hidden_proto(sigblock) +#include <unistd.h> +#include <sysdep-cancel.h> -int __libc_pause(void) +/* Suspend the process until a signal arrives. + This always returns -1 and sets errno to EINTR. */ +int +__libc_pause (void) { - return (__sigpause(sigblock(0), 0)); + sigset_t set; + + __sigemptyset (&set); + sigprocmask (SIG_BLOCK, NULL, &set); + + /* pause is a cancellation point, but so is sigsuspend. + So no need for anything special here. */ + + return sigsuspend (&set); } -#endif -weak_alias(__libc_pause,pause) +weak_alias (__libc_pause, pause) + +LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */ |