Fix sig_atomic_t, add signal handler test
diff --git a/include/signal.h b/include/signal.h
index e78318f..ab3c98d 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -16,7 +16,7 @@
/* glibc seems to use sig_atomic_t as "int" pretty much on all architectures.
Do the same, but allow the architecture to override. */
-#ifdef _KLIBC_HAS_ARCH_SIG_ATOMIC_T
+#ifndef _KLIBC_HAS_ARCH_SIG_ATOMIC_T
typedef int sig_atomic_t;
#endif
diff --git a/klibc/tests/sigint.c b/klibc/tests/sigint.c
new file mode 100644
index 0000000..9899383
--- /dev/null
+++ b/klibc/tests/sigint.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+static sig_atomic_t counter = 0;
+
+static void sig_handler(int signum)
+{
+ static char msg[] = "Signal handler\n";
+
+ (void)signum;
+
+ write(1, msg, sizeof msg - 1);
+ counter++;
+}
+
+int main(int argc, char *argv[])
+{
+ struct sigaction act;
+ pid_t f;
+
+ memset(&act, 0x00, sizeof(struct sigaction));
+ act.sa_handler = sig_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_RESTART;
+ sigaction(SIGINT, &act, NULL);
+ sigaction(SIGTERM, &act, NULL);
+
+ (void)argc;
+
+ f = fork();
+
+ if ( f < 0 ) {
+ perror(argv[0]);
+ exit(255);
+ } else if ( f > 0 ) {
+ sleep(5);
+ if ( !counter ) {
+ fprintf(stderr, "No signal received!\n");
+ exit(1);
+ }
+ exit(0);
+ } else {
+ sleep(1);
+ kill(getppid(), SIGINT);
+ exit(0);
+ }
+}
