main: try to block signals before executing crash shell

2010-04-13 04:07:19 +02:00
parent 243b1432c6
commit 8c43883a68
1 changed files with 8 additions and 0 deletions
@@ -110,9 +110,17 @@ _noreturn static void crash(int sig) {
                chvt(crash_chvt);

        if (crash_shell) {
+                sigset_t mask;
+
                log_info("Executing crash shell in 10s...");
                sleep(10);

+                /* Make sure the signal is not delivered inside the
+                 * exec() */
+                assert_se(sigemptyset(&mask) == 0);
+                assert_se(sigaddset(&mask, sig) == 0);
+                assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+
                execl("/bin/sh", "/bin/sh", NULL);
                log_error("execl() failed: %s", strerror(errno));
        }