X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fsignal%2Fsigaction.c;h=7a72a44b13fec0ca83eae4f4241258e2da8c3876;hb=ddfb267b0e72499f6022981733264a063ec881f0;hp=e0c58b734e9d22c3fa37682aaa85bee84ccabe89;hpb=cd8d72451662f0157d06fcf666669db543dcea3b;p=musl

diff --git a/src/signal/sigaction.c b/src/signal/sigaction.c
index e0c58b73..7a72a44b 100644
--- a/src/signal/sigaction.c
+++ b/src/signal/sigaction.c
@@ -1,6 +1,7 @@
 #include <stdlib.h>
 #include <signal.h>
 #include <errno.h>
+#include <string.h>
 #include "syscall.h"
 #include "pthread_impl.h"
 #include "libc.h"
@@ -11,16 +12,17 @@ void __restore(), __restore_rt();
 static pthread_t dummy(void) { return 0; }
 weak_alias(dummy, __pthread_self_def);
 
-int __libc_sigaction(int sig, const struct sigaction *sa, struct sigaction *old)
+int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
 {
 	struct k_sigaction ksa;
 	if (sa) {
+		if ((uintptr_t)sa->sa_handler > 1UL)
+			__pthread_self_def();
 		ksa.handler = sa->sa_handler;
 		ksa.flags = sa->sa_flags | SA_RESTORER;
 		ksa.restorer = (sa->sa_flags & SA_SIGINFO) ? __restore_rt : __restore;
 		memcpy(&ksa.mask, &sa->sa_mask, sizeof ksa.mask);
 	}
-	__pthread_self_def();
 	if (syscall(SYS_rt_sigaction, sig, sa?&ksa:0, old?&ksa:0, sizeof ksa.mask))
 		return -1;
 	if (old) {
@@ -31,7 +33,7 @@ int __libc_sigaction(int sig, const struct sigaction *sa, struct sigaction *old)
 	return 0;
 }
 
-int __sigaction(int sig, const struct sigaction *sa, struct sigaction *old)
+int __sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
 {
 	if (sig-32U < 3) {
 		errno = EINVAL;