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Commit 44950b67 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4.1: Ensure that we initialise the session when following a referral 



Put the code that is common to both the referral and ordinary mount cases
into a common helper routine.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent b76ce561

fs/nfs/client.c

+51 −71
Original line number Diff line number Diff line
@@ -1286,6 +1286,55 @@ static void nfs4_session_set_rwsize(struct nfs_server *server) 
#endif /* CONFIG_NFS_V4_1 */

}



static int nfs4_server_common_setup(struct nfs_server *server,

		struct nfs_fh *mntfh)

{

	struct nfs_fattr *fattr;

	int error;



	BUG_ON(!server->nfs_client);

	BUG_ON(!server->nfs_client->rpc_ops);

	BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);



	fattr = nfs_alloc_fattr();

	if (fattr == NULL)

		return -ENOMEM;



	/* We must ensure the session is initialised first */

	error = nfs4_init_session(server);

	if (error < 0)

		goto out;



	/* Probe the root fh to retrieve its FSID and filehandle */

	error = nfs4_get_rootfh(server, mntfh);

	if (error < 0)

		goto out;



	dprintk("Server FSID: %llx:%llx\n",

			(unsigned long long) server->fsid.major,

			(unsigned long long) server->fsid.minor);

	dprintk("Mount FH: %d\n", mntfh->size);



	nfs4_session_set_rwsize(server);



	error = nfs_probe_fsinfo(server, mntfh, fattr);

	if (error < 0)

		goto out;



	if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)

		server->namelen = NFS4_MAXNAMLEN;



	spin_lock(&nfs_client_lock);

	list_add_tail(&server->client_link, &server->nfs_client->cl_superblocks);

	list_add_tail(&server->master_link, &nfs_volume_list);

	spin_unlock(&nfs_client_lock);



	server->mount_time = jiffies;

out:

	nfs_free_fattr(fattr);

	return error;

}



/*

 * Create a version 4 volume record

 */
@@ -1346,7 +1395,6 @@ error: 
struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,

				      struct nfs_fh *mntfh)

{

	struct nfs_fattr *fattr;

	struct nfs_server *server;

	int error;
@@ -1356,55 +1404,19 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data, 
	if (!server)

		return ERR_PTR(-ENOMEM);



	error = -ENOMEM;

	fattr = nfs_alloc_fattr();

	if (fattr == NULL)

		goto error;



	/* set up the general RPC client */

	error = nfs4_init_server(server, data);

	if (error < 0)

		goto error;



	BUG_ON(!server->nfs_client);

	BUG_ON(!server->nfs_client->rpc_ops);

	BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);



	error = nfs4_init_session(server);

	error = nfs4_server_common_setup(server, mntfh);

	if (error < 0)

		goto error;



	/* Probe the root fh to retrieve its FSID */

	error = nfs4_get_rootfh(server, mntfh);

	if (error < 0)

		goto error;



	dprintk("Server FSID: %llx:%llx\n",

		(unsigned long long) server->fsid.major,

		(unsigned long long) server->fsid.minor);

	dprintk("Mount FH: %d\n", mntfh->size);



	nfs4_session_set_rwsize(server);



	error = nfs_probe_fsinfo(server, mntfh, fattr);

	if (error < 0)

		goto error;



	if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)

		server->namelen = NFS4_MAXNAMLEN;



	spin_lock(&nfs_client_lock);

	list_add_tail(&server->client_link, &server->nfs_client->cl_superblocks);

	list_add_tail(&server->master_link, &nfs_volume_list);

	spin_unlock(&nfs_client_lock);



	server->mount_time = jiffies;

	dprintk("<-- nfs4_create_server() = %p\n", server);

	nfs_free_fattr(fattr);

	return server;



error:

	nfs_free_fattr(fattr);

	nfs_free_server(server);

	dprintk("<-- nfs4_create_server() = error %d\n", error);

	return ERR_PTR(error);
@@ -1418,7 +1430,6 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, 
{

	struct nfs_client *parent_client;

	struct nfs_server *server, *parent_server;

	struct nfs_fattr *fattr;

	int error;



	dprintk("--> nfs4_create_referral_server()\n");
@@ -1427,11 +1438,6 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, 
	if (!server)

		return ERR_PTR(-ENOMEM);



	error = -ENOMEM;

	fattr = nfs_alloc_fattr();

	if (fattr == NULL)

		goto error;



	parent_server = NFS_SB(data->sb);

	parent_client = parent_server->nfs_client;
@@ -1456,40 +1462,14 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, 
	if (error < 0)

		goto error;



	BUG_ON(!server->nfs_client);

	BUG_ON(!server->nfs_client->rpc_ops);

	BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);



	/* Probe the root fh to retrieve its FSID and filehandle */

	error = nfs4_get_rootfh(server, mntfh);

	if (error < 0)

		goto error;



	/* probe the filesystem info for this server filesystem */

	error = nfs_probe_fsinfo(server, mntfh, fattr);

	error = nfs4_server_common_setup(server, mntfh);

	if (error < 0)

		goto error;



	if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)

		server->namelen = NFS4_MAXNAMLEN;



	dprintk("Referral FSID: %llx:%llx\n",

		(unsigned long long) server->fsid.major,

		(unsigned long long) server->fsid.minor);



	spin_lock(&nfs_client_lock);

	list_add_tail(&server->client_link, &server->nfs_client->cl_superblocks);

	list_add_tail(&server->master_link, &nfs_volume_list);

	spin_unlock(&nfs_client_lock);



	server->mount_time = jiffies;



	nfs_free_fattr(fattr);

	dprintk("<-- nfs_create_referral_server() = %p\n", server);

	return server;



error:

	nfs_free_fattr(fattr);

	nfs_free_server(server);

	dprintk("<-- nfs4_create_referral_server() = error %d\n", error);

	return ERR_PTR(error);