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authorJeff Layton <jlayton@redhat.com>2013-10-18 10:03:37 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-10-28 14:30:23 -0400
commit57acc40d73407159727b3a1456f0a498133831ba (patch)
treef44ac3abe5bcf2e4792243b942a98c313b99b405 /fs/nfs/super.c
parent3660cd4322fce986689b06225d9c12d77193c252 (diff)
downloadleg-kernel-57acc40d73407159727b3a1456f0a498133831ba.tar.gz
nfs: reject version and minorversion changes on remount attempts
Reported-by: Eric Doutreleau <edoutreleau@genoscope.cns.fr> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index a03b9c6f9489..137572bb7037 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2143,6 +2143,8 @@ nfs_compare_remount_data(struct nfs_server *nfss,
if (data->flags != nfss->flags ||
data->rsize != nfss->rsize ||
data->wsize != nfss->wsize ||
+ data->version != nfss->nfs_client->rpc_ops->version ||
+ data->minorversion != nfss->nfs_client->cl_minorversion ||
data->retrans != nfss->client->cl_timeout->to_retries ||
data->auth_flavors[0] != nfss->client->cl_auth->au_flavor ||
data->acregmin != nfss->acregmin / HZ ||
@@ -2197,6 +2199,8 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
data->nfs_server.port = nfss->port;
data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
+ data->version = nfsvers;
+ data->minorversion = nfss->nfs_client->cl_minorversion;
memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
data->nfs_server.addrlen);