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Commit c818ba43 authored by Manoj Naik's avatar Manoj Naik Committed by Trond Myklebust
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NFSv4: Create NFSv4 transport and client 



Move existing code into a separate function so that it can be also used by
referral code.

Signed-off-by: default avatarManoj Naik <manoj@almaden.ibm.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 830b8e33

fs/nfs/inode.c

+73 −58
Original line number Diff line number Diff line
@@ -2027,62 +2027,24 @@ static void nfs4_clear_inode(struct inode *inode) 
}





static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data, int silent)

static struct rpc_clnt *nfs4_create_client(struct nfs_server *server,

	struct rpc_timeout *timeparms, int proto, rpc_authflavor_t flavor)

{

	struct nfs_server *server;

	struct nfs4_client *clp = NULL;

	struct nfs4_client *clp;

	struct rpc_xprt *xprt = NULL;

	struct rpc_clnt *clnt = NULL;

	struct rpc_timeout timeparms;

	rpc_authflavor_t authflavour;

	int err = -EIO;



	sb->s_blocksize_bits = 0;

	sb->s_blocksize = 0;

	server = NFS_SB(sb);

	if (data->rsize != 0)

		server->rsize = nfs_block_size(data->rsize, NULL);

	if (data->wsize != 0)

		server->wsize = nfs_block_size(data->wsize, NULL);

	server->flags = data->flags & NFS_MOUNT_FLAGMASK;

	server->caps = NFS_CAP_ATOMIC_OPEN;



	server->acregmin = data->acregmin*HZ;

	server->acregmax = data->acregmax*HZ;

	server->acdirmin = data->acdirmin*HZ;

	server->acdirmax = data->acdirmax*HZ;



	server->rpc_ops = &nfs_v4_clientops;



	nfs_init_timeout_values(&timeparms, data->proto, data->timeo, data->retrans);



	server->retrans_timeo = timeparms.to_initval;

	server->retrans_count = timeparms.to_retries;



	clp = nfs4_get_client(&server->addr.sin_addr);

	if (!clp) {

		dprintk("%s: failed to create NFS4 client.\n", __FUNCTION__);

		return -EIO;

		return ERR_PTR(err);

	}



	/* Now create transport and client */

	authflavour = RPC_AUTH_UNIX;

	if (data->auth_flavourlen != 0) {

		if (data->auth_flavourlen != 1) {

			dprintk("%s: Invalid number of RPC auth flavours %d.\n",

					__FUNCTION__, data->auth_flavourlen);

			err = -EINVAL;

			goto out_fail;

		}

		if (copy_from_user(&authflavour, data->auth_flavours, sizeof(authflavour))) {

			err = -EFAULT;

			goto out_fail;

		}

	}



	down_write(&clp->cl_sem);

	if (IS_ERR(clp->cl_rpcclient)) {

		xprt = xprt_create_proto(data->proto, &server->addr, &timeparms);

		xprt = xprt_create_proto(proto, &server->addr, timeparms);

		if (IS_ERR(xprt)) {

			up_write(&clp->cl_sem);

			err = PTR_ERR(xprt);
@@ -2091,7 +2053,7 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data, 
			goto out_fail;

		}

		clnt = rpc_create_client(xprt, server->hostname, &nfs_program,

				server->rpc_ops->version, authflavour);

				server->rpc_ops->version, flavor);

		if (IS_ERR(clnt)) {

			up_write(&clp->cl_sem);

			err = PTR_ERR(clnt);
@@ -2113,38 +2075,91 @@ static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data, 
	clp = NULL;



	if (IS_ERR(clnt)) {

		err = PTR_ERR(clnt);

		dprintk("%s: cannot create RPC client. Error = %d\n",

				__FUNCTION__, err);

		return err;

		return clnt;

	}



	server->client    = clnt;



	if (server->nfs4_state->cl_idmap == NULL) {

		dprintk("%s: failed to create idmapper.\n", __FUNCTION__);

		return -ENOMEM;

		return ERR_PTR(-ENOMEM);

	}



	if (clnt->cl_auth->au_flavor != authflavour) {

	if (clnt->cl_auth->au_flavor != flavor) {

		struct rpc_auth *auth;



		auth = rpcauth_create(authflavour, clnt);

		auth = rpcauth_create(flavor, clnt);

		if (IS_ERR(auth)) {

			dprintk("%s: couldn't create credcache!\n", __FUNCTION__);

			return PTR_ERR(auth);

			return (struct rpc_clnt *)auth;

		}

	}

	return clnt;



 out_fail:

	if (clp)

		nfs4_put_client(clp);

	return ERR_PTR(err);

}



static int nfs4_fill_super(struct super_block *sb, struct nfs4_mount_data *data, int silent)

{

	struct nfs_server *server;

	struct rpc_timeout timeparms;

	rpc_authflavor_t authflavour;

	int err = -EIO;



	sb->s_blocksize_bits = 0;

	sb->s_blocksize = 0;

	server = NFS_SB(sb);

	if (data->rsize != 0)

		server->rsize = nfs_block_size(data->rsize, NULL);

	if (data->wsize != 0)

		server->wsize = nfs_block_size(data->wsize, NULL);

	server->flags = data->flags & NFS_MOUNT_FLAGMASK;

	server->caps = NFS_CAP_ATOMIC_OPEN;



	server->acregmin = data->acregmin*HZ;

	server->acregmax = data->acregmax*HZ;

	server->acdirmin = data->acdirmin*HZ;

	server->acdirmax = data->acdirmax*HZ;



	server->rpc_ops = &nfs_v4_clientops;



	nfs_init_timeout_values(&timeparms, data->proto, data->timeo, data->retrans);



	server->retrans_timeo = timeparms.to_initval;

	server->retrans_count = timeparms.to_retries;



	/* Now create transport and client */

	authflavour = RPC_AUTH_UNIX;

	if (data->auth_flavourlen != 0) {

		if (data->auth_flavourlen != 1) {

			dprintk("%s: Invalid number of RPC auth flavours %d.\n",

					__FUNCTION__, data->auth_flavourlen);

			err = -EINVAL;

			goto out_fail;

		}

		if (copy_from_user(&authflavour, data->auth_flavours, sizeof(authflavour))) {

			err = -EFAULT;

			goto out_fail;

		}

	}



	server->client = nfs4_create_client(server, &timeparms, data->proto, authflavour);

	if (IS_ERR(server->client)) {

		err = PTR_ERR(server->client);

			dprintk("%s: cannot create RPC client. Error = %d\n",

					__FUNCTION__, err);

			goto out_fail;

	}



	sb->s_time_gran = 1;



	sb->s_op = &nfs4_sops;

	err = nfs_sb_init(sb, authflavour);

	if (err == 0)

		return 0;



 out_fail:

	if (clp)

		nfs4_put_client(clp);

	return err;

}