[systemd-devel] [PATCH] initctl: support 'telinit u/q'

[Tom Gundersen]

We send SIGTERM (resp., SIGHUP) when we receive request for changing to
runlevel 'u' (resp., 'q').

As initctl is already async, we just send the signals rather than first
attempting to connect to sytemd over dbus and then falling back to kill.
---
 src/initctl.c |   19 ++++++++++++++++++-
 1 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/src/initctl.c b/src/initctl.c
index dd74314..ea1acd1 100644
--- a/src/initctl.c
+++ b/src/initctl.c
@@ -165,7 +165,24 @@ static void request_process(Server *s, const struct init_request *req) {
                 if (!isprint(req->runlevel))
                         log_error("Got invalid runlevel. Ignoring.");
                 else
-                        change_runlevel(s, req->runlevel);
+                        switch (req->runlevel) {
+
+                        /* we are async anyway, so just use kill for reexec/reload */
+                        case 'u':
+                        case 'U':
+                                if (kill(1, SIGTERM) < 0)
+                                        log_error("kill() failed: %m");
+                                break;
+
+                        case 'q':
+                        case 'Q':
+                                if (kill(1, SIGHUP) < 0)
+                                        log_error("kill() failed: %m");
+                                break;
+
+                        default:
+                                change_runlevel(s, req->runlevel);
+                        }
                 return;
 
         case INIT_CMD_POWERFAIL:
-- 
1.7.6