From c083134268b9a0b94801374691e01a5bf5602f4a Mon Sep 17 00:00:00 2001
From: Luigi Rizzo <luigi@FreeBSD.org>
Date: Mon, 12 Apr 2010 08:27:53 +0000
Subject: [PATCH] fix a buffer overflow with large (100k+) number of input
 lines.

MFC after:	3 days
---
 sbin/ipfw/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sbin/ipfw/main.c b/sbin/ipfw/main.c
index cd39cf13bfdf..43693e0e1226 100644
--- a/sbin/ipfw/main.c
+++ b/sbin/ipfw/main.c
@@ -553,11 +553,11 @@ ipfw_readfile(int ac, char *av[])
 	}
 
 	while (fgets(buf, BUFSIZ, f)) {		/* read commands */
-		char linename[10];
+		char linename[20];
 		char *args[2];
 
 		lineno++;
-		sprintf(linename, "Line %d", lineno);
+		snprintf(linename, sizeof(linename), "Line %d", lineno);
 		setprogname(linename); /* XXX */
 		args[0] = progname;
 		args[1] = buf;