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-rw-r--r--init/init.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/init/init.c b/init/init.c
index a354f8a75..e70d5a15d 100644
--- a/init/init.c
+++ b/init/init.c
@@ -430,6 +430,13 @@ extern int init_main(int argc, char **argv)
#endif
+#ifndef DEBUG_INIT
+ if (getpid() != 1) {
+ usage( "init\n\nInit is the parent of all processes.\n\n"
+ "This version of init is designed to be run only by the kernel\n");
+ }
+#endif
+
/* Check if we are supposed to be in single user mode */
if ( argc > 1 && (!strcmp(argv[1], "single") ||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {