linux-kernel - [PATCH 6/7] net: core: maybe return -EEXIST in __dev_alloc

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Date:   Mon, 13 Nov 2017 00:15:09 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 6/7] net: core: maybe return -EEXIST in __dev_alloc_name

If we're given format string with no %d, -EEXIST is a saner error code.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 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 c0a92cf27566..7c08b4ca7b76 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1104,7 +1104,7 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
 	 * when the name is long and there isn't enough space left
 	 * for the digits, or if all bits are used.
 	 */
-	return -ENFILE;
+	return p ? -ENFILE : -EEXIST;
 }
 
 static int dev_alloc_name_ns(struct net *net,
-- 
2.11.0