From: Ben Harris <bjh21@bjh21.me.uk>
Date: Wed, 14 Nov 2018 00:26:35 +0000 (+0000)
Subject: With "-s" specified, cope with empty or missing state file.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=9179cc6c753512cac8536d81773723cf67bac605;p=clunk.git

With "-s" specified, cope with empty or missing state file.
---

diff --git a/clunk.c b/clunk.c
index cbb8efb..2ff3b44 100644
--- a/clunk.c
+++ b/clunk.c
@@ -100,8 +100,10 @@ init_statefile(char const *statefilename)
 	len = pread(statefd, buf, 9, 0);
 	if (len == -1)
 		err(1, "read %s", optarg);
-	buf[len] = '\0';
-	init_statestring(buf);
+	if (len > 0) {
+		buf[len] = '\0';
+		init_statestring(buf);
+	}
 }
 
 static void