initctl: add some checks before starting up

1 files changed, 10 insertions, 0 deletions

diff --git a/src/initctl.c b/src/initctl.c
index b6bcaf9fc6..3de7fcd42e 100644
--- a/src/initctl.c
+++ b/src/initctl.c
@@ -336,6 +336,16 @@ int main(int argc, char *argv[]) {
         Server server;
         int r = 3, n;
 
+        if (getppid() != 1) {
+                log_error("This program should be invoked by init only.");
+                return 1;
+        }
+
+        if (argc > 1) {
+                log_error("This program does not take arguments.");
+                return 1;
+        }
+
         log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
         log_parse_environment();