From: Florian Forster <octo@leeloo.lan.home.verplant.org>
Date: Mon, 24 Nov 2008 18:23:25 +0000 (+0100)
Subject: multimeter plugin: Check the return value of `write'.
X-Git-Tag: collectd-4.4.5~12
X-Git-Url: https://git.octo.it/?a=commitdiff_plain;ds=sidebyside;h=3e429a6d86ac6a0afe31f31b3d4417bc43dd979e;p=collectd.git

multimeter plugin: Check the return value of `write'.

This resolves warnings when compiling on GNU with:
  CPPFLAGS="-D_FORTIFY_SOURCE"
---

diff --git a/src/multimeter.c b/src/multimeter.c
index c6b070a0..db357460 100644
--- a/src/multimeter.c
+++ b/src/multimeter.c
@@ -86,7 +86,12 @@ static int multimeter_read_value(double *value)
     			struct timeval timeout;
     			struct timeval time_now;
 
-			write(fd, "D", 1);
+			status = swrite (fd, "D", 1);
+			if (status < 0)
+			{
+				ERROR ("multimeter plugin: swrite failed.");
+				return (-1);
+			}
 
 			FD_ZERO(&rfds);
 			FD_SET(fd, &rfds);