From 41d058c3ba7bd16c3a91b9ec4d89fb6e7d4b4316 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 7 Sep 2013 17:49:05 -0400 Subject: [PATCH] NFSv4: Disallow security negotiation for lookups when 'sec=' is specified Ensure that nfs4_proc_lookup_common respects the NFS_MOUNT_SECFLAVOUR flag. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 68551ea0b673..122b9340e6ef 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3154,7 +3154,9 @@ static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, err = -EPERM; if (client != *clnt) goto out; - + /* No security negotiation if the user specified 'sec=' */ + if (NFS_SERVER(dir)->flags & NFS_MOUNT_SECFLAVOUR) + goto out; client = nfs4_create_sec_client(client, dir, name); if (IS_ERR(client)) return PTR_ERR(client);