switch-root: don't wait for processes

[elogind.git] / src / core / main.c

diff --git a/src/core/main.c b/src/core/main.c
index ae3769be5279ed08b2f79794e9cc0dc4072afcea..022d05a31b815cf8b9bc11afa887268a2f48a9e4 100644 (file)
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -66,6 +66,7 @@
 static enum {
         ACTION_RUN,
         ACTION_HELP,
+        ACTION_VERSION,
         ACTION_TEST,
         ACTION_DUMP_CONFIGURATION_ITEMS,
         ACTION_DONE
@@ -750,6 +751,7 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_SYSTEM,
                 ARG_USER,
                 ARG_TEST,
+                ARG_VERSION,
                 ARG_DUMP_CONFIGURATION_ITEMS,
                 ARG_DUMP_CORE,
                 ARG_CRASH_SHELL,
@@ -772,6 +774,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "user",                     no_argument,       NULL, ARG_USER                     },
                 { "test",                     no_argument,       NULL, ARG_TEST                     },
                 { "help",                     no_argument,       NULL, 'h'                          },
+                { "version",                  no_argument,       NULL, ARG_VERSION                  },
                 { "dump-configuration-items", no_argument,       NULL, ARG_DUMP_CONFIGURATION_ITEMS },
                 { "dump-core",                optional_argument, NULL, ARG_DUMP_CORE                },
                 { "crash-shell",              optional_argument, NULL, ARG_CRASH_SHELL              },
@@ -877,6 +880,10 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_action = ACTION_TEST;
                         break;
 
+                case ARG_VERSION:
+                        arg_action = ACTION_VERSION;
+                        break;
+
                 case ARG_DUMP_CONFIGURATION_ITEMS:
                         arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
                         break;
@@ -1043,6 +1050,14 @@ static int help(void) {
         return 0;
 }
 
+static int version(void) {
+        puts(PACKAGE_STRING);
+        puts(DISTRIBUTION);
+        puts(SYSTEMD_FEATURES);
+
+        return 0;
+}
+
 static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
         FILE *f = NULL;
         FDSet *fds = NULL;
@@ -1328,6 +1343,9 @@ int main(int argc, char *argv[]) {
         if (arg_action == ACTION_HELP) {
                 retval = help();
                 goto finish;
+        } else if (arg_action == ACTION_VERSION) {
+                retval = version();
+                goto finish;
         } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
                 unit_dump_config_items(stdout);
                 retval = EXIT_SUCCESS;
@@ -1674,9 +1692,11 @@ finish:
                 watchdog_close(true);
 
                 if (switch_root_dir) {
-                        /* Kill all remaining processes from the initrd */
-                        broadcast_signal(SIGTERM);
-                        broadcast_signal(SIGKILL);
+                        /* Kill all remaining processes from the
+                         * initrd, but don't wait for them, so that we
+                         * can handle the SIGCHLD for them after
+                         * deserializing. */
+                        broadcast_signal(SIGTERM, false);
 
                         /* And switch root */
                         r = switch_root(switch_root_dir);