linux-kernel - [PATCH] colons are invalid characters in netdev names

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Message-Id: <1424214942-17581-1-git-send-email-mthode@mthode.org>
Date:	Tue, 17 Feb 2015 17:15:42 -0600
From:	Matthew Thode <mthode@...ode.org>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matthew Thode <mthode@...ode.org>
Subject: [PATCH] colons are invalid characters in netdev names

colons are used as a separator in netdev device lookup in dev_ioctl.c

Specific functions are SIOCGIFTXQLEN SIOCETHTOOL SIOCSIFNAME

Signed-off-by: Matthew Thode <mthode@...ode.org>
---
 net/core/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index d030575..e9b6d5a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -942,7 +942,7 @@ bool dev_valid_name(const char *name)
 		return false;
 	if (strlen(name) >= IFNAMSIZ)
 		return false;
-	if (!strcmp(name, ".") || !strcmp(name, ".."))
+	if (!strcmp(name, ".") || !strcmp(name, "..") || !strcmp(name, ":"))
 		return false;
 
 	while (*name) {
-- 
2.0.5

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