Add service configuration reloading

This commit add the ability to initd to reload the service configuration
while running. The new configuration is merged with the existing one as
follows:

For each target:
 - If the existing service list is not NULL, we have not started that
   target yet. Simply replace it with the new list.
 - If it is NULL, the services have already been started.
    - First, remove all entries for services in that target that no
      loner exist (except from the 'running' list).
    - Second, add new services that we don't have yet. Treat them as
      recently diseased and let the user start them manualy.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>

1 files changed, 3 insertions, 0 deletions

diff --git a/initd/main.c b/initd/main.c
index 2b1a1cc..9cccdc5 100644
--- a/initd/main.c
+++ b/initd/main.c
@@ -30,6 +30,9 @@ static void handle_signal(void)
 	case SIGINT:
 		supervisor_set_target(TGT_REBOOT);
 		break;
+	case SIGHUP:
+		supervisor_reload_config();
+		break;
 	case SIGUSR1:
 		if (sockfd >= 0) {
 			close(sockfd);