X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fthread%2Fpthread_sigmask.c;h=cddc2bca7680bcc36165f4f26316b30bb423ee4e;hb=2d93d6446191def352b8913e859d6104f1398c72;hp=60a440b4c5078d507bf38e6d93c47b69afe4c788;hpb=ad5881842eaa6a04fcb35b822b0a046a3f7e73a2;p=musl

diff --git a/src/thread/pthread_sigmask.c b/src/thread/pthread_sigmask.c
index 60a440b4..cddc2bca 100644
--- a/src/thread/pthread_sigmask.c
+++ b/src/thread/pthread_sigmask.c
@@ -5,6 +5,16 @@
 
 int pthread_sigmask(int how, const sigset_t *set, sigset_t *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;
 }