new: add set_sig_handler function

src/daemon.c

@@ -45,6 +45,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
+#include <signal.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -233,6 +234,15 @@ int create_pid_file(const char *pid_file_name)
 
 
 
+
+void set_sig_handler(int sig, signal_handler_t handler)
+{
+    if(signal(sig, handler) == SIG_ERR)
+        daemon_error_exit("Can't set handler for signal: %d %m\n", sig);
+}
+
+
+
 static void do_fork()
 {
     switch( fork() )                                     // Become background process

src/daemon.h

@@ -95,9 +95,12 @@ void daemon_error_exit(const char *format, ...);
 void exit_if_not_daemonized(int exit_status);
 
 
+typedef void (*signal_handler_t) (int);
+
+void set_sig_handler(int sig, signal_handler_t handler);
 
-void daemonize2(void (*optional_init)(void *), void *data);
 
+void daemonize2(void (*optional_init)(void *), void *data);
 static inline void daemonize() { daemonize2(NULL, NULL); }