From 54be5008888bb26659416dec86a6b0cb3990aa9a Mon Sep 17 00:00:00 2001
From: Dominique Martinet <asmadeus@codewreck.org>
Date: Sat, 5 Nov 2022 21:29:00 +0900
Subject: [PATCH] bgp_write: fix sent data (offset) on partial write

&peer->outbuf->packet has a non-1 size, so &foo + offset would
incorrectly offset by sizeof(packet) * offset, while it is meant as a
byte offset.

Cast to char * to have a simple offset.

Reported-by: Coverity#375309
---
 bgp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bgp.c b/bgp.c
index 2791ca3..181de9a 100644
--- a/bgp.c
+++ b/bgp.c
@@ -1028,7 +1028,7 @@ static int bgp_write(struct bgp_peer *peer)
     int len = htons(peer->outbuf->packet.header.len);
     int r;
 
-    while ((r = write(peer->sock, &peer->outbuf->packet + peer->outbuf->done,
+    while ((r = write(peer->sock, (char*)&peer->outbuf->packet + peer->outbuf->done,
 	len - peer->outbuf->done)) == -1)
     {
 	if (errno == EINTR)