X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fsignal%2Fsigaltstack.c;h=d3a6e8215f83c3d0a8038a6d0eee2bc228b104e5;hb=29e4319178cbc2a4e9f058a99ae8098d4b6ac055;hp=6e46d098e43b02c1d7a68575620c6a3018eca682;hpb=6871fd773dcedbf056317d5d5e87b4859e97c4a4;p=musl

diff --git a/src/signal/sigaltstack.c b/src/signal/sigaltstack.c
index 6e46d098..d3a6e821 100644
--- a/src/signal/sigaltstack.c
+++ b/src/signal/sigaltstack.c
@@ -2,17 +2,17 @@
 #include <errno.h>
 #include "syscall.h"
 
-int sigaltstack(const stack_t *ss, stack_t *old)
+int sigaltstack(const stack_t *restrict ss, stack_t *restrict old)
 {
 	if (ss) {
-		if (ss->ss_size < MINSIGSTKSZ) {
+		if (!(ss->ss_flags & SS_DISABLE) && ss->ss_size < MINSIGSTKSZ) {
 			errno = ENOMEM;
 			return -1;
 		}
-		if (ss->ss_flags & ~SS_DISABLE) {
+		if (ss->ss_flags & SS_ONSTACK) {
 			errno = EINVAL;
 			return -1;
 		}
 	}
-	return syscall2(__NR_sigaltstack, (long)ss, (long)old);
+	return syscall(SYS_sigaltstack, ss, old);
 }