procd: shift arguments for askfirst only once

In case we want to process an inittab item multiple times (e.g. in case
of hotplugging) we must not shift the arguments for askfirst multiple
times. So check whether we already did it.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

1 files changed, 12 insertions, 6 deletions

diff --git a/inittab.c b/inittab.c
index b67730c..1cfef2b 100644
--- a/inittab.c
+++ b/inittab.c
@@ -165,9 +165,12 @@ static void askfirst(struct init_action *a)
 	}
 
 	a->tout.cb = respawn;
-	for (i = MAX_ARGS - 1; i >= 1; i--)
-		a->argv[i] = a->argv[i - 1];
-	a->argv[0] = ask;
+	/* shift arguments only if not yet done */
+	if (a->argv[0] != ask) {
+		for (i = MAX_ARGS - 1; i >= 1; i--)
+			a->argv[i] = a->argv[i - 1];
+		a->argv[0] = ask;
+	}
 	a->respawn = 500;
 
 	a->proc.cb = child_exit;
@@ -200,9 +203,12 @@ static void askconsole(struct init_action *a)
 	}
 
 	a->tout.cb = respawn;
-	for (i = MAX_ARGS - 1; i >= 1; i--)
-		a->argv[i] = a->argv[i - 1];
-	a->argv[0] = ask;
+	/* shift arguments only if not yet done */
+	if (a->argv[0] != ask) {
+		for (i = MAX_ARGS - 1; i >= 1; i--)
+			a->argv[i] = a->argv[i - 1];
+		a->argv[0] = ask;
+	}
 	a->respawn = 500;
 
 	a->proc.cb = child_exit;