NFSv4: Prepare for minorversion-specific nfs_server capabilities

Clean up the setting of the nfs_server->caps, by shoving it all
into nfs4_server_common_setup().
Then add an 'initial capabilities' field into struct nfs4_minor_version_ops.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

3 files changed, 22 insertions, 11 deletions

diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 627a74f0e248..7ef19ce6d832 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -36,6 +36,7 @@ enum nfs4_client_state {
 
 struct nfs4_minor_version_ops {
         u32     minor_version;
+        unsigned init_caps;
 
         int     (*call_sync)(struct rpc_clnt *clnt,
                         struct nfs_server *server,
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index ac4fc9a8fdbc..17b34b2da2df 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -717,6 +717,19 @@ static int nfs4_server_common_setup(struct nfs_server *server,
         if (error < 0)
                 goto out;
 
+        /* Set the basic capabilities */
+        server->caps |= server->nfs_client->cl_mvops->init_caps;
+        if (server->flags & NFS_MOUNT_NORDIRPLUS)
+                        server->caps &= ~NFS_CAP_READDIRPLUS;
+        /*
+         * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
+         * authentication.
+         */
+        if (nfs4_disable_idmapping &&
+                        server->client->cl_auth->au_flavor == RPC_AUTH_UNIX)
+                server->caps |= NFS_CAP_UIDGID_NOMAP;
+
+
         /* Probe the root fh to retrieve its FSID and filehandle */
         error = nfs4_get_rootfh(server, mntfh);
         if (error < 0)
@@ -760,9 +773,6 @@ static int nfs4_init_server(struct nfs_server *server,
 
         /* Initialise the client representation from the mount data */
         server->flags = data->flags;
-        server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR|NFS_CAP_POSIX_LOCK;
-        if (!(data->flags & NFS_MOUNT_NORDIRPLUS))
-                        server->caps |= NFS_CAP_READDIRPLUS;
         server->options = data->options;
 
         /* Get a client record */
@@ -779,13 +789,6 @@ static int nfs4_init_server(struct nfs_server *server,
         if (error < 0)
                 goto error;
 
-        /*
-         * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
-         * authentication.
-         */
-        if (nfs4_disable_idmapping && data->auth_flavors[0] == RPC_AUTH_UNIX)
-                server->caps |= NFS_CAP_UIDGID_NOMAP;
-
         if (data->rsize)
                 server->rsize = nfs_block_size(data->rsize, NULL);
         if (data->wsize)
@@ -863,7 +866,6 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
 
         /* Initialise the client representation from the parent server */
         nfs_server_copy_userdata(server, parent_server);
-        server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR;
 
         /* Get a client representation.
          * Note: NFSv4 always uses TCP, */
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6ad06121d88c..22c80f9ed824 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6823,6 +6823,10 @@ static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
 
 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
         .minor_version = 0,
+        .init_caps = NFS_CAP_READDIRPLUS
+                | NFS_CAP_ATOMIC_OPEN
+                | NFS_CAP_CHANGE_ATTR
+                | NFS_CAP_POSIX_LOCK,
         .call_sync = _nfs4_call_sync,
         .match_stateid = nfs4_match_stateid,
         .find_root_sec = nfs4_find_root_sec,
@@ -6834,6 +6838,10 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
 #if defined(CONFIG_NFS_V4_1)
 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
         .minor_version = 1,
+        .init_caps = NFS_CAP_READDIRPLUS
+                | NFS_CAP_ATOMIC_OPEN
+                | NFS_CAP_CHANGE_ATTR
+                | NFS_CAP_POSIX_LOCK,
         .call_sync = nfs4_call_sync_sequence,
         .match_stateid = nfs41_match_stateid,
         .find_root_sec = nfs41_find_root_sec,