From: Sebastian Harl <sh@tokkee.org>
Date: Sun, 5 Jun 2016 12:27:11 +0000 (+0200)
Subject: Merge pull request #1746 from rubenk/swrite-check-for-open-fd
X-Git-Tag: collectd-5.6.0~229
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=3f8fcdf9a0184e2e2cb3098a94f0223cf54373d4;hp=edd9af8a874ebc9f2a7f02846807229a648917db

Merge pull request #1746 from rubenk/swrite-check-for-open-fd

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;