From 9a1428f41a03d629ffabf1d66e029fa7c0a99819 Mon Sep 17 00:00:00 2001
From: Ori Bernstein <ori@eigenstate.org>
Date: Fri, 20 May 2022 17:16:41 +0000
Subject: [PATCH] git: improve error on short read

we don't recover from an invalid packet, so just
sysfatal with a useful message.
---
 sys/src/cmd/git/proto.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/src/cmd/git/proto.c b/sys/src/cmd/git/proto.c
index 05d72cc49..ddc2258f3 100644
--- a/sys/src/cmd/git/proto.c
+++ b/sys/src/cmd/git/proto.c
@@ -58,8 +58,8 @@ readpkt(Conn *c, char *buf, int nbuf)
 	char *e;
 	int n;
 
-	if(readn(c->rfd, len, 4) == -1)
-		return -1;
+	if(readn(c->rfd, len, 4) != 4)
+		sysfatal("pktline: short read from transport");
 	len[4] = 0;
 	n = strtol(len, &e, 16);
 	if(n == 0){