From: Stephen Hemminger <stephen@networkplumber.org>
Date: Fri, 21 Apr 2023 17:01:51 +0000 (-0700)
Subject: lwtunnel: fix warning from strncpy
X-Git-Tag: v6.3.0~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f666443f4bae700e8ce410d46018563b2de8bca6;p=thirdparty%2Fiproute2.git

lwtunnel: fix warning from strncpy

The code for parsing segments in lwtunnel would trigger a warning
about strncpy if address sanitizer was enabled. Simpler to just
use strlcpy() like elsewhere.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---

diff --git a/ip/iproute_lwtunnel.c b/ip/iproute_lwtunnel.c
index 9fcbdeac3..d3100234d 100644
--- a/ip/iproute_lwtunnel.c
+++ b/ip/iproute_lwtunnel.c
@@ -1468,8 +1468,7 @@ static int parse_encap_seg6local(struct rtattr *rta, size_t len, int *argcp,
 			NEXT_ARG();
 			if (segs_ok++)
 				duparg2("segs", *argv);
-			strncpy(segbuf, *argv, 1024);
-			segbuf[1023] = 0;
+			strlcpy(segbuf, *argv, 1024);
 			if (!NEXT_ARG_OK())
 				break;
 			NEXT_ARG();