Replace signal with sigaction

diff --git a/herbe.c b/herbe.c
index ff449366e1747c28ec5a3237cd8fe1014de99a7b..42e7d73328437a0361184b316f01d69834a575f1 100644 (file)
--- a/herbe.c
+++ b/herbe.c
@@ -68,21 +68,15 @@ int get_max_len(char *body, XftFont *font, int max_text_width)
                return ++eol;
 }
 
-void expire()
+void expire(int sig)
 {
        XEvent event;
        event.type = ButtonPress;
-       event.xbutton.button = DISMISS_BUTTON;
+       event.xbutton.button = (sig == SIGUSR2) ? (ACTION_BUTTON) : (DISMISS_BUTTON);
        XSendEvent(display, window, 0, 0, &event);
        XFlush(display);
 }
 
-void action()
-{
-       exit_code = EXIT_ACTION;
-       expire();
-}
-
 int main(int argc, char *argv[])
 {
        if (argc == 1)
@@ -91,11 +85,21 @@ int main(int argc, char *argv[])
                die("Usage: %s body", argv[0]);
        }
 
-       signal(SIGALRM, expire);
-       signal(SIGTERM, expire);
-       signal(SIGINT, expire);
-       signal(SIGUSR1, SIG_IGN);
-       signal(SIGUSR2, SIG_IGN);
+       struct sigaction act_expire, act_ignore;
+       act_expire.sa_handler = expire;
+       act_expire.sa_flags = SA_RESTART;
+       sigemptyset(&act_expire.sa_mask);
+
+       act_ignore.sa_handler = SIG_IGN;
+       act_ignore.sa_flags = 0;
+       sigemptyset(&act_ignore.sa_mask);
+
+       sigaction(SIGALRM, &act_expire, 0);
+       sigaction(SIGTERM, &act_expire, 0);
+       sigaction(SIGINT, &act_expire, 0);
+
+       sigaction(SIGUSR1, &act_ignore, 0);
+       sigaction(SIGUSR2, &act_ignore, 0);
 
        display = XOpenDisplay(0);
 
@@ -171,8 +175,8 @@ int main(int argc, char *argv[])
        sem_t *mutex = sem_open("/herbe", O_CREAT, 0644, 1);
        sem_wait(mutex);
 
-       signal(SIGUSR1, expire);
-       signal(SIGUSR2, action);
+       sigaction(SIGUSR1, &act_expire, 0);
+       sigaction(SIGUSR2, &act_expire, 0);
 
        if (duration != 0)
                alarm(duration);
@@ -213,4 +217,4 @@ int main(int argc, char *argv[])
        XCloseDisplay(display);
 
        exit(exit_code);
-}
+}
\ No newline at end of file