Patch from till busch <buti@gmx.at> -- unblock all signals

in exec_signal() before calling exec()


git-svn-id: svn://busybox.net/trunk/busybox@4992 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 16 insertions, 0 deletions

diff --git a/init/init.c b/init/init.c
index f109c4ea5..e4812538d 100644
--- a/init/init.c
+++ b/init/init.c
@@ -758,10 +758,26 @@ static void shutdown_system(void)
 static void exec_signal(int sig)
 {
         struct init_action *a, *tmp;
+        sigset_t unblock_signals;
+        
         for (a = init_action_list; a; a = tmp) {
                 tmp = a->next;
                 if (a->action & RESTART) {
                         shutdown_system();
+
+                        /* unblock all signals, blocked in shutdown_system() */
+                        sigemptyset(&unblock_signals);
+                        sigaddset(&unblock_signals, SIGHUP);
+                        sigaddset(&unblock_signals, SIGCHLD);
+                        sigaddset(&unblock_signals, SIGUSR1);
+                        sigaddset(&unblock_signals, SIGUSR2);
+                        sigaddset(&unblock_signals, SIGINT);
+                        sigaddset(&unblock_signals, SIGTERM);
+                        sigaddset(&unblock_signals, SIGCONT);
+                        sigaddset(&unblock_signals, SIGSTOP);
+                        sigaddset(&unblock_signals, SIGTSTP);
+                        sigprocmask(SIG_UNBLOCK, &unblock_signals, NULL);
+
                         message(CONSOLE|LOG, "\rTrying to re-exec %s\n", a->command);
                         execl(a->command, a->command, NULL);