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120 lines
3.3 KiB
120 lines
3.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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#include <linux/nfs_fs.h> |
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#include <linux/nfs_mount.h> |
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#include <linux/sunrpc/addr.h> |
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#include "internal.h" |
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#include "nfs3_fs.h" |
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#ifdef CONFIG_NFS_V3_ACL |
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static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program }; |
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static const struct rpc_version *nfsacl_version[] = { |
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[3] = &nfsacl_version3, |
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}; |
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const struct rpc_program nfsacl_program = { |
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.name = "nfsacl", |
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.number = NFS_ACL_PROGRAM, |
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.nrvers = ARRAY_SIZE(nfsacl_version), |
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.version = nfsacl_version, |
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.stats = &nfsacl_rpcstat, |
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}; |
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/* |
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* Initialise an NFSv3 ACL client connection |
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*/ |
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static void nfs_init_server_aclclient(struct nfs_server *server) |
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{ |
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if (server->flags & NFS_MOUNT_NOACL) |
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goto out_noacl; |
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server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3); |
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if (IS_ERR(server->client_acl)) |
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goto out_noacl; |
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/* No errors! Assume that Sun nfsacls are supported */ |
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server->caps |= NFS_CAP_ACLS; |
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return; |
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out_noacl: |
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server->caps &= ~NFS_CAP_ACLS; |
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} |
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#else |
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static inline void nfs_init_server_aclclient(struct nfs_server *server) |
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{ |
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server->flags &= ~NFS_MOUNT_NOACL; |
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server->caps &= ~NFS_CAP_ACLS; |
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} |
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#endif |
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struct nfs_server *nfs3_create_server(struct fs_context *fc) |
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{ |
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struct nfs_server *server = nfs_create_server(fc); |
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/* Create a client RPC handle for the NFS v3 ACL management interface */ |
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if (!IS_ERR(server)) |
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nfs_init_server_aclclient(server); |
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return server; |
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} |
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struct nfs_server *nfs3_clone_server(struct nfs_server *source, |
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struct nfs_fh *fh, |
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struct nfs_fattr *fattr, |
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rpc_authflavor_t flavor) |
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{ |
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struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor); |
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if (!IS_ERR(server) && !IS_ERR(source->client_acl)) |
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nfs_init_server_aclclient(server); |
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return server; |
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} |
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/* |
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* Set up a pNFS Data Server client over NFSv3. |
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* |
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* Return any existing nfs_client that matches server address,port,version |
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* and minorversion. |
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* |
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* For a new nfs_client, use a soft mount (default), a low retrans and a |
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* low timeout interval so that if a connection is lost, we retry through |
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* the MDS. |
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*/ |
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struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, |
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const struct sockaddr *ds_addr, int ds_addrlen, |
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int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans) |
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{ |
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struct rpc_timeout ds_timeout; |
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struct nfs_client *mds_clp = mds_srv->nfs_client; |
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struct nfs_client_initdata cl_init = { |
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.addr = ds_addr, |
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.addrlen = ds_addrlen, |
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.nodename = mds_clp->cl_rpcclient->cl_nodename, |
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.ip_addr = mds_clp->cl_ipaddr, |
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.nfs_mod = &nfs_v3, |
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.proto = ds_proto, |
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.net = mds_clp->cl_net, |
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.timeparms = &ds_timeout, |
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.cred = mds_srv->cred, |
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}; |
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struct nfs_client *clp; |
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char buf[INET6_ADDRSTRLEN + 1]; |
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/* fake a hostname because lockd wants it */ |
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if (rpc_ntop(ds_addr, buf, sizeof(buf)) <= 0) |
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return ERR_PTR(-EINVAL); |
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cl_init.hostname = buf; |
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if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP) |
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cl_init.nconnect = mds_clp->cl_nconnect; |
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if (mds_srv->flags & NFS_MOUNT_NORESVPORT) |
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__set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); |
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__set_bit(NFS_CS_NOPING, &cl_init.init_flags); |
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__set_bit(NFS_CS_DS, &cl_init.init_flags); |
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/* Use the MDS nfs_client cl_ipaddr. */ |
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nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans); |
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clp = nfs_get_client(&cl_init); |
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return clp; |
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} |
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EXPORT_SYMBOL_GPL(nfs3_set_ds_client);
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