[OpenWrt-Devel] [PATCH 4/7] procd: shift arguments for askfirst only once

[Michael Heimpold]

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 at heimpold.de>
---
 inittab.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/inittab.c b/inittab.c
index 18023f5..45118f4 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;
-- 
2.17.1


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