1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/nfs_fs.h>
3 #include <linux/nfs_mount.h>
4 #include <linux/sunrpc/addr.h>
10 #ifdef CONFIG_NFS_V3_ACL
11 static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program };
12 static const struct rpc_version *nfsacl_version[] = {
13 [3] = &nfsacl_version3,
16 const struct rpc_program nfsacl_program = {
18 .number = NFS_ACL_PROGRAM,
19 .nrvers = ARRAY_SIZE(nfsacl_version),
20 .version = nfsacl_version,
21 .stats = &nfsacl_rpcstat,
25 * Initialise an NFSv3 ACL client connection
27 static void nfs_init_server_aclclient(struct nfs_server *server)
29 if (server->flags & NFS_MOUNT_NOACL)
32 server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
33 if (IS_ERR(server->client_acl))
36 nfs_sysfs_link_rpc_client(server, server->client_acl, NULL);
38 /* No errors! Assume that Sun nfsacls are supported */
39 server->caps |= NFS_CAP_ACLS;
43 server->caps &= ~NFS_CAP_ACLS;
46 static inline void nfs_init_server_aclclient(struct nfs_server *server)
48 server->flags &= ~NFS_MOUNT_NOACL;
49 server->caps &= ~NFS_CAP_ACLS;
53 struct nfs_server *nfs3_create_server(struct fs_context *fc)
55 struct nfs_server *server = nfs_create_server(fc);
57 /* Create a client RPC handle for the NFS v3 ACL management interface */
59 nfs_init_server_aclclient(server);
63 struct nfs_server *nfs3_clone_server(struct nfs_server *source,
65 struct nfs_fattr *fattr,
66 rpc_authflavor_t flavor)
68 struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor);
69 if (!IS_ERR(server) && !IS_ERR(source->client_acl))
70 nfs_init_server_aclclient(server);
75 * Set up a pNFS Data Server client over NFSv3.
77 * Return any existing nfs_client that matches server address,port,version
80 * For a new nfs_client, use a soft mount (default), a low retrans and a
81 * low timeout interval so that if a connection is lost, we retry through
84 struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
85 const struct sockaddr_storage *ds_addr, int ds_addrlen,
86 int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
88 struct rpc_timeout ds_timeout;
89 struct nfs_client *mds_clp = mds_srv->nfs_client;
90 struct nfs_client_initdata cl_init = {
92 .addrlen = ds_addrlen,
93 .nodename = mds_clp->cl_rpcclient->cl_nodename,
94 .ip_addr = mds_clp->cl_ipaddr,
97 .net = mds_clp->cl_net,
98 .timeparms = &ds_timeout,
99 .cred = mds_srv->cred,
100 .xprtsec = mds_clp->cl_xprtsec,
102 struct nfs_client *clp;
103 char buf[INET6_ADDRSTRLEN + 1];
105 /* fake a hostname because lockd wants it */
106 if (rpc_ntop((struct sockaddr *)ds_addr, buf, sizeof(buf)) <= 0)
107 return ERR_PTR(-EINVAL);
108 cl_init.hostname = buf;
111 case XPRT_TRANSPORT_TCP:
112 case XPRT_TRANSPORT_TCP_TLS:
113 if (mds_clp->cl_nconnect > 1)
114 cl_init.nconnect = mds_clp->cl_nconnect;
117 if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
118 __set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
120 __set_bit(NFS_CS_DS, &cl_init.init_flags);
122 /* Use the MDS nfs_client cl_ipaddr. */
123 nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans);
124 clp = nfs_get_client(&cl_init);
128 EXPORT_SYMBOL_GPL(nfs3_set_ds_client);