1 #include <linux/nfs_fs.h> 2 #include <linux/nfs_mount.h> 3 #include <linux/sunrpc/addr.h> 4 #include "internal.h" 5 #include "nfs3_fs.h" 6 7 #ifdef CONFIG_NFS_V3_ACL 8 static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program }; 9 static const struct rpc_version *nfsacl_version[] = { 10 [3] = &nfsacl_version3, 11 }; 12 13 const struct rpc_program nfsacl_program = { 14 .name = "nfsacl", 15 .number = NFS_ACL_PROGRAM, 16 .nrvers = ARRAY_SIZE(nfsacl_version), 17 .version = nfsacl_version, 18 .stats = &nfsacl_rpcstat, 19 }; 20 21 /* 22 * Initialise an NFSv3 ACL client connection 23 */ 24 static void nfs_init_server_aclclient(struct nfs_server *server) 25 { 26 if (server->flags & NFS_MOUNT_NOACL) 27 goto out_noacl; 28 29 server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3); 30 if (IS_ERR(server->client_acl)) 31 goto out_noacl; 32 33 /* No errors! Assume that Sun nfsacls are supported */ 34 server->caps |= NFS_CAP_ACLS; 35 return; 36 37 out_noacl: 38 server->caps &= ~NFS_CAP_ACLS; 39 } 40 #else 41 static inline void nfs_init_server_aclclient(struct nfs_server *server) 42 { 43 server->flags &= ~NFS_MOUNT_NOACL; 44 server->caps &= ~NFS_CAP_ACLS; 45 } 46 #endif 47 48 struct nfs_server *nfs3_create_server(struct nfs_mount_info *mount_info, 49 struct nfs_subversion *nfs_mod) 50 { 51 struct nfs_server *server = nfs_create_server(mount_info, nfs_mod); 52 /* Create a client RPC handle for the NFS v3 ACL management interface */ 53 if (!IS_ERR(server)) 54 nfs_init_server_aclclient(server); 55 return server; 56 } 57 58 struct nfs_server *nfs3_clone_server(struct nfs_server *source, 59 struct nfs_fh *fh, 60 struct nfs_fattr *fattr, 61 rpc_authflavor_t flavor) 62 { 63 struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor); 64 if (!IS_ERR(server) && !IS_ERR(source->client_acl)) 65 nfs_init_server_aclclient(server); 66 return server; 67 } 68 69 /* 70 * Set up a pNFS Data Server client over NFSv3. 71 * 72 * Return any existing nfs_client that matches server address,port,version 73 * and minorversion. 74 * 75 * For a new nfs_client, use a soft mount (default), a low retrans and a 76 * low timeout interval so that if a connection is lost, we retry through 77 * the MDS. 78 */ 79 struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, 80 const struct sockaddr *ds_addr, int ds_addrlen, 81 int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans) 82 { 83 struct rpc_timeout ds_timeout; 84 struct nfs_client *mds_clp = mds_srv->nfs_client; 85 struct nfs_client_initdata cl_init = { 86 .addr = ds_addr, 87 .addrlen = ds_addrlen, 88 .nodename = mds_clp->cl_rpcclient->cl_nodename, 89 .ip_addr = mds_clp->cl_ipaddr, 90 .nfs_mod = &nfs_v3, 91 .proto = ds_proto, 92 .net = mds_clp->cl_net, 93 .timeparms = &ds_timeout, 94 .cred = mds_srv->cred, 95 }; 96 struct nfs_client *clp; 97 char buf[INET6_ADDRSTRLEN + 1]; 98 99 /* fake a hostname because lockd wants it */ 100 if (rpc_ntop(ds_addr, buf, sizeof(buf)) <= 0) 101 return ERR_PTR(-EINVAL); 102 cl_init.hostname = buf; 103 104 if (mds_srv->flags & NFS_MOUNT_NORESVPORT) 105 set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); 106 107 /* Use the MDS nfs_client cl_ipaddr. */ 108 nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans); 109 clp = nfs_get_client(&cl_init); 110 111 return clp; 112 } 113 EXPORT_SYMBOL_GPL(nfs3_set_ds_client); 114