[PATCH] Fix valgrind warning

[Guenther Deschner]

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Hi *,

while debugging some "net" code I saw this "Syscall param
ioctl(SIOCETHTOOL) points to uninitialised byte(s)" warning.

Please review and push.

Thanks,
Guenther
- -- 
Guenther Deschner
Pestalozzistr. 39
D-13187 Berlin
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From 4e3cc111369dda2d7581b1356c9123d943869605 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=BCnther=20Deschner?= <gd at samba.org>
Date: Wed, 2 Mar 2016 18:32:53 +0100
Subject: [PATCH] lib/socket/interfaces: Fix some uninitialied bytes.

Valgrind reports the following:

==26599== Syscall param ioctl(SIOCETHTOOL) points to uninitialised byte(s)
==26599==    at 0x7014707: ioctl (in /usr/lib64/libc-2.22.so)
==26599==    by 0x79D1585: query_iface_speed_from_name (interfaces.c:152)
==26599==    by 0x79D1BBA: _get_interfaces (interfaces.c:277)
==26599==    by 0x79D1E80: get_interfaces (interfaces.c:368)
==26599==    by 0x508A7E3: load_interfaces (interface.c:612)
==26599==    by 0x150B30: main (net.c:963)
==26599==  Address 0xffefff0d8 is on thread 1's stack
==26599==  in frame #1, created by query_iface_speed_from_name
(interfaces.c:130)
==26599==
==26599== Syscall param ioctl(SIOCETHTOOL) points to uninitialised byte(s)
==26599==    at 0x7014707: ioctl (in /usr/lib64/libc-2.22.so)
==26599==    by 0x79D15CC: query_iface_speed_from_name (interfaces.c:164)
==26599==    by 0x79D1BBA: _get_interfaces (interfaces.c:277)
==26599==    by 0x79D1E80: get_interfaces (interfaces.c:368)
==26599==    by 0x508A7E3: load_interfaces (interface.c:612)
==26599==    by 0x150B30: main (net.c:963)
==26599==  Address 0xffefff0d8 is on thread 1's stack
==26599==  in frame #1, created by query_iface_speed_from_name
(interfaces.c:130)

Guenther

Signed-off-by: Guenther Deschner <gd at samba.org>
---
 lib/socket/interfaces.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/socket/interfaces.c b/lib/socket/interfaces.c
index 2cabf46..dacd118 100644
--- a/lib/socket/interfaces.c
+++ b/lib/socket/interfaces.c
@@ -145,6 +145,7 @@ static void query_iface_speed_from_name(const char *name, uint64_t *speed)
 		goto done;
 	}
 
+	ZERO_STRUCT(ifr);
 	strncpy(ifr.ifr_name, name, IF_NAMESIZE);
 
 	ifr.ifr_data = (void *)&edata;
-- 
2.5.0