[ 29/48] net: reject creation of netdev names with colons

[Willy Tarreau]

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Matthew Thode <mthode@xxxxxxxxxx>

[ Upstream commit a4176a9391868bfa87705bcd2e3b49e9b9dd2996 ]

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@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
(cherry picked from commit d501ebeb7da7531e92e3c8d194730341c314ff2d)

Signed-off-by: Willy Tarreau <w@xxxxxx>
---
 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 d250444..0767b17 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -779,7 +779,7 @@ int dev_valid_name(const char *name)
 		return 0;
 
 	while (*name) {
-		if (*name == '/' || isspace(*name))
+		if (*name == '/' || *name == ':' || isspace(*name))
 			return 0;
 		name++;
 	}
-- 
1.7.12.2.21.g234cd45.dirty



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