From: Ruben Kerkhof <ruben@rubenkerkhof.com>
Date: Sun, 5 Jun 2016 11:53:17 +0000 (+0200)
Subject: swrite: return error if fd is negative
X-Git-Tag: collectd-5.6.0~229^2
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=d54f3b1640ee23b5213ac870ca3de558f54e8247;p=collectd.git

swrite: return error if fd is negative
---

diff --git a/src/daemon/common.c b/src/daemon/common.c
index f82efe33..4c271d34 100644
--- a/src/daemon/common.c
+++ b/src/daemon/common.c
@@ -273,6 +273,9 @@ ssize_t swrite (int fd, const void *buf, size_t count)
 	ptr   = (const char *) buf;
 	nleft = count;
 	
+	if (fd < 0)
+		return (-1);
+
 	/* checking for closed peer connection */
 	pfd.fd = fd;
 	pfd.events = POLLIN | POLLHUP;