initial check-in, version 0.5.0v0.5.0

1 files changed, 13 insertions, 0 deletions

diff --git a/src/signal/signal.c b/src/signal/signal.c
new file mode 100644
index 00000000..08902760
--- /dev/null
+++ b/src/signal/signal.c
@@ -0,0 +1,13 @@
+#include <signal.h>
+#include <stddef.h>
+#include "syscall.h"
+
+int __sigaction(int, const struct sigaction *, struct sigaction *);
+
+void (*signal(int sig, void (*func)(int)))(int)
+{
+	struct sigaction sa = { .sa_handler = func, .sa_flags = SA_RESTART };
+	if (__sigaction(sig, &sa, &sa) < 0)
+		return SIG_ERR;
+	return sa.sa_handler;
+}