#include <signal.h>
+#include <errno.h>
#include "syscall.h"
#include "libc.h"
#include "pthread_impl.h"
int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old)
{
- return syscall4(__NR_rt_sigprocmask, how, (long)set, (long)old, 8);
+ return syscall(SYS_rt_sigprocmask, how, set, old, 8);
}
int __sigprocmask(int how, const sigset_t *set, sigset_t *old)
{
sigset_t tmp;
+ if (how > 2U) {
+ errno = EINVAL;
+ return -1;
+ }
/* Disallow blocking thread control signals */
- if (how != SIG_UNBLOCK) {
+ if (set && how != SIG_UNBLOCK) {
tmp = *set;
set = &tmp;
sigdelset(&tmp, SIGCANCEL);
}
weak_alias(__sigprocmask, sigprocmask);
-weak_alias(__sigprocmask, pthread_sigmask);