#include <pthread.h>
#include "syscall.h"
-int pthread_sigmask(int how, const sigset_t *set, sigset_t *old)
+int pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict old)
{
- if (how > 2U) return EINVAL;
- return -__syscall(SYS_rt_sigprocmask, how, set, old, 8);
+ int ret;
+ if ((unsigned)how - SIG_BLOCK > 2U) return EINVAL;
+ ret = -__syscall(SYS_rt_sigprocmask, how, set, old, __SYSCALL_SSLEN);
+ if (!ret && old) {
+ if (sizeof old->__bits[0] == 8) {
+ old->__bits[0] &= ~0x380000000ULL;
+ } else {
+ old->__bits[0] &= ~0x80000000UL;
+ old->__bits[1] &= ~0x3UL;
+ }
+ }
+ return ret;
}