X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fsignal%2Fsigaction.c;h=5499bd181c37c06978f4c0a55d9571078b9faffd;hb=63b9cc777323488da3474e8bc53e0ac4d3521382;hp=9a362262174c8838f52f7bf9d7023f0aeec445ce;hpb=e1d8d25a5024ec7832250e62825aab71ed8a253d;p=musl

diff --git a/src/signal/sigaction.c b/src/signal/sigaction.c
index 9a362262..5499bd18 100644
--- a/src/signal/sigaction.c
+++ b/src/signal/sigaction.c
@@ -1,44 +1,55 @@
 #include <stdlib.h>
 #include <signal.h>
 #include <errno.h>
+#include <string.h>
 #include "syscall.h"
 #include "pthread_impl.h"
+#include "libc.h"
+#include "ksigaction.h"
 
-static void restorer()
+void __restore(), __restore_rt();
+
+static pthread_t dummy(void) { return 0; }
+weak_alias(dummy, __pthread_self_def);
+
+static unsigned long handler_set[_NSIG/(8*sizeof(long))];
+
+void __get_handler_set(sigset_t *set)
 {
-	syscall0(__NR_rt_sigreturn);
+	memcpy(set, handler_set, sizeof handler_set);
 }
 
-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 {
-		void *handler;
-		unsigned long flags;
-		void (*restorer)(void);
-		sigset_t mask;
-	} ksa, kold;
-	long pksa=0, pkold=0;
+	struct k_sigaction ksa, ksa_old;
+	if (sig >= (unsigned)_NSIG) {
+		errno = EINVAL;
+		return -1;
+	}
 	if (sa) {
+		if ((uintptr_t)sa->sa_handler > 1UL) {
+			a_or_l(handler_set+(sig-1)/(8*sizeof(long)),
+				1UL<<(sig-1)%(8*sizeof(long)));
+			__pthread_self_def();
+		}
 		ksa.handler = sa->sa_handler;
 		ksa.flags = sa->sa_flags | SA_RESTORER;
-		ksa.restorer = restorer;
-		ksa.mask = sa->sa_mask;
-		pksa = (long)&ksa;
+		ksa.restorer = (sa->sa_flags & SA_SIGINFO) ? __restore_rt : __restore;
+		memcpy(&ksa.mask, &sa->sa_mask, sizeof ksa.mask);
 	}
-	if (old) pkold = (long)&kold;
-	if (syscall4(__NR_rt_sigaction, sig, pksa, pkold, 8))
+	if (syscall(SYS_rt_sigaction, sig, sa?&ksa:0, old?&ksa_old:0, sizeof ksa.mask))
 		return -1;
 	if (old) {
-		old->sa_handler = kold.handler;
-		old->sa_flags = kold.flags;
-		old->sa_mask = kold.mask;
+		old->sa_handler = ksa_old.handler;
+		old->sa_flags = ksa_old.flags;
+		memcpy(&old->sa_mask, &ksa_old.mask, sizeof ksa_old.mask);
 	}
 	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 == SIGCANCEL || sig == SIGSYSCALL) {
+	if (sig-32U < 3) {
 		errno = EINVAL;
 		return -1;
 	}