X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_sigmask.c;h=b274bd0d8ac19fcb54a3e32a81b2db6fccdc1d6b;hb=1d92cddb1e1ed4b6cc0e55461727561e7a2522e0;hp=60a440b4c5078d507bf38e6d93c47b69afe4c788;hpb=ad5881842eaa6a04fcb35b822b0a046a3f7e73a2;p=musl

diff --git a/src/thread/pthread_sigmask.c b/src/thread/pthread_sigmask.c
index 60a440b4..b274bd0d 100644
--- a/src/thread/pthread_sigmask.c
+++ b/src/thread/pthread_sigmask.c
@@ -3,8 +3,18 @@
 #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, _NSIG/8);
+	if (!ret && old) {
+		if (sizeof old->__bits[0] == 8) {
+			old->__bits[0] &= ~0x380000000ULL;
+		} else {
+			old->__bits[0] &= ~0x80000000UL;
+			old->__bits[1] &= ~0x3UL;
+		}
+	}
+	return ret;
 }