David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 1 | /* client.c: NFS client sharing and management code |
| 2 | * |
| 3 | * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/init.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 15 | #include <linux/sched.h> |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 16 | #include <linux/time.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/mm.h> |
| 19 | #include <linux/string.h> |
| 20 | #include <linux/stat.h> |
| 21 | #include <linux/errno.h> |
| 22 | #include <linux/unistd.h> |
| 23 | #include <linux/sunrpc/clnt.h> |
| 24 | #include <linux/sunrpc/stats.h> |
| 25 | #include <linux/sunrpc/metrics.h> |
\"Talpey, Thomas\ | 0896a72 | 2007-09-10 13:48:23 -0400 | [diff] [blame] | 26 | #include <linux/sunrpc/xprtsock.h> |
\"Talpey, Thomas\ | 2cf7ff7 | 2007-09-10 13:49:41 -0400 | [diff] [blame] | 27 | #include <linux/sunrpc/xprtrdma.h> |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 28 | #include <linux/nfs_fs.h> |
| 29 | #include <linux/nfs_mount.h> |
| 30 | #include <linux/nfs4_mount.h> |
| 31 | #include <linux/lockd/bind.h> |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 32 | #include <linux/seq_file.h> |
| 33 | #include <linux/mount.h> |
| 34 | #include <linux/nfs_idmap.h> |
| 35 | #include <linux/vfs.h> |
| 36 | #include <linux/inet.h> |
Trond Myklebust | 3b0d3f9 | 2008-01-03 13:28:58 -0500 | [diff] [blame] | 37 | #include <linux/in6.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 38 | #include <linux/slab.h> |
Al Viro | 4040153 | 2012-02-13 03:58:52 +0000 | [diff] [blame] | 39 | #include <linux/idr.h> |
Trond Myklebust | 3b0d3f9 | 2008-01-03 13:28:58 -0500 | [diff] [blame] | 40 | #include <net/ipv6.h> |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 41 | #include <linux/nfs_xdr.h> |
Andy Adamson | 0b5b7ae | 2009-04-01 09:23:15 -0400 | [diff] [blame] | 42 | #include <linux/sunrpc/bc_xprt.h> |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 43 | #include <linux/nsproxy.h> |
| 44 | #include <linux/pid_namespace.h> |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 45 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 46 | |
| 47 | #include "nfs4_fs.h" |
| 48 | #include "callback.h" |
| 49 | #include "delegation.h" |
| 50 | #include "iostat.h" |
| 51 | #include "internal.h" |
David Howells | 1472728 | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 52 | #include "fscache.h" |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 53 | #include "pnfs.h" |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 54 | #include "nfs.h" |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 55 | #include "netns.h" |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 56 | |
| 57 | #define NFSDBG_FACILITY NFSDBG_CLIENT |
| 58 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 59 | static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 60 | static DEFINE_SPINLOCK(nfs_version_lock); |
| 61 | static DEFINE_MUTEX(nfs_version_mutex); |
| 62 | static LIST_HEAD(nfs_versions); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 63 | |
| 64 | /* |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 65 | * RPC cruft for NFS |
| 66 | */ |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 67 | static const struct rpc_version *nfs_version[5] = { |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 68 | [2] = NULL, |
| 69 | [3] = NULL, |
| 70 | [4] = NULL, |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 71 | }; |
| 72 | |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 73 | const struct rpc_program nfs_program = { |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 74 | .name = "nfs", |
| 75 | .number = NFS_PROGRAM, |
| 76 | .nrvers = ARRAY_SIZE(nfs_version), |
| 77 | .version = nfs_version, |
| 78 | .stats = &nfs_rpcstat, |
Jim Rees | fe0a9b7 | 2011-07-30 20:52:42 -0400 | [diff] [blame] | 79 | .pipe_dir_name = NFS_PIPE_DIRNAME, |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 80 | }; |
| 81 | |
| 82 | struct rpc_stat nfs_rpcstat = { |
| 83 | .program = &nfs_program |
| 84 | }; |
| 85 | |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 86 | static struct nfs_subversion *find_nfs_version(unsigned int version) |
| 87 | { |
| 88 | struct nfs_subversion *nfs; |
| 89 | spin_lock(&nfs_version_lock); |
| 90 | |
| 91 | list_for_each_entry(nfs, &nfs_versions, list) { |
| 92 | if (nfs->rpc_ops->version == version) { |
| 93 | spin_unlock(&nfs_version_lock); |
| 94 | return nfs; |
| 95 | } |
Yanchuan Nian | ee34e13 | 2012-09-10 08:40:16 +0800 | [diff] [blame] | 96 | } |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 97 | |
| 98 | spin_unlock(&nfs_version_lock); |
Yanchuan Nian | ee34e13 | 2012-09-10 08:40:16 +0800 | [diff] [blame] | 99 | return ERR_PTR(-EPROTONOSUPPORT); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | struct nfs_subversion *get_nfs_version(unsigned int version) |
| 103 | { |
| 104 | struct nfs_subversion *nfs = find_nfs_version(version); |
| 105 | |
| 106 | if (IS_ERR(nfs)) { |
| 107 | mutex_lock(&nfs_version_mutex); |
bjschuma@gmail.com | 1ae811e | 2012-08-08 13:57:06 -0400 | [diff] [blame] | 108 | request_module("nfsv%d", version); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 109 | nfs = find_nfs_version(version); |
| 110 | mutex_unlock(&nfs_version_mutex); |
| 111 | } |
| 112 | |
Alexey Khoroshilov | 1f70ef9 | 2014-07-18 03:11:45 +0400 | [diff] [blame] | 113 | if (!IS_ERR(nfs) && !try_module_get(nfs->owner)) |
| 114 | return ERR_PTR(-EAGAIN); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 115 | return nfs; |
| 116 | } |
| 117 | |
| 118 | void put_nfs_version(struct nfs_subversion *nfs) |
| 119 | { |
| 120 | module_put(nfs->owner); |
| 121 | } |
| 122 | |
| 123 | void register_nfs_version(struct nfs_subversion *nfs) |
| 124 | { |
| 125 | spin_lock(&nfs_version_lock); |
| 126 | |
| 127 | list_add(&nfs->list, &nfs_versions); |
| 128 | nfs_version[nfs->rpc_ops->version] = nfs->rpc_vers; |
| 129 | |
| 130 | spin_unlock(&nfs_version_lock); |
| 131 | } |
| 132 | EXPORT_SYMBOL_GPL(register_nfs_version); |
| 133 | |
| 134 | void unregister_nfs_version(struct nfs_subversion *nfs) |
| 135 | { |
| 136 | spin_lock(&nfs_version_lock); |
| 137 | |
| 138 | nfs_version[nfs->rpc_ops->version] = NULL; |
| 139 | list_del(&nfs->list); |
| 140 | |
| 141 | spin_unlock(&nfs_version_lock); |
| 142 | } |
| 143 | EXPORT_SYMBOL_GPL(unregister_nfs_version); |
| 144 | |
| 145 | /* |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 146 | * Allocate a shared client record |
| 147 | * |
| 148 | * Since these are allocated/deallocated very rarely, we don't |
| 149 | * bother putting them in a slab cache... |
| 150 | */ |
Bryan Schumaker | 6663ee7 | 2012-06-20 15:53:46 -0400 | [diff] [blame] | 151 | struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 152 | { |
| 153 | struct nfs_client *clp; |
Trond Myklebust | 7c67db3 | 2008-04-07 20:50:11 -0400 | [diff] [blame] | 154 | struct rpc_cred *cred; |
Chuck Lever | a21bdd9 | 2009-06-17 18:02:10 -0700 | [diff] [blame] | 155 | int err = -ENOMEM; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 156 | |
| 157 | if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL) |
| 158 | goto error_0; |
| 159 | |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 160 | clp->cl_nfs_mod = cl_init->nfs_mod; |
Alexey Khoroshilov | 1f70ef9 | 2014-07-18 03:11:45 +0400 | [diff] [blame] | 161 | if (!try_module_get(clp->cl_nfs_mod->owner)) |
| 162 | goto error_dealloc; |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 163 | |
| 164 | clp->rpc_ops = clp->cl_nfs_mod->rpc_ops; |
Trond Myklebust | 40c55319 | 2007-12-14 14:56:07 -0500 | [diff] [blame] | 165 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 166 | atomic_set(&clp->cl_count, 1); |
| 167 | clp->cl_cons_state = NFS_CS_INITING; |
| 168 | |
Chuck Lever | 6e4cffd | 2007-12-10 14:58:15 -0500 | [diff] [blame] | 169 | memcpy(&clp->cl_addr, cl_init->addr, cl_init->addrlen); |
| 170 | clp->cl_addrlen = cl_init->addrlen; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 171 | |
Trond Myklebust | 3a49802 | 2007-12-14 14:56:04 -0500 | [diff] [blame] | 172 | if (cl_init->hostname) { |
Chuck Lever | a21bdd9 | 2009-06-17 18:02:10 -0700 | [diff] [blame] | 173 | err = -ENOMEM; |
Trond Myklebust | 3a49802 | 2007-12-14 14:56:04 -0500 | [diff] [blame] | 174 | clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 175 | if (!clp->cl_hostname) |
Benny Halevy | 7146851 | 2009-04-01 09:22:56 -0400 | [diff] [blame] | 176 | goto error_cleanup; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | INIT_LIST_HEAD(&clp->cl_superblocks); |
| 180 | clp->cl_rpcclient = ERR_PTR(-EINVAL); |
| 181 | |
Trond Myklebust | 59dca3b | 2008-01-03 16:29:06 -0500 | [diff] [blame] | 182 | clp->cl_proto = cl_init->proto; |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 183 | clp->cl_net = get_net(cl_init->net); |
Trond Myklebust | 59dca3b | 2008-01-03 16:29:06 -0500 | [diff] [blame] | 184 | |
Trond Myklebust | 68c9715 | 2012-01-03 13:22:46 -0500 | [diff] [blame] | 185 | cred = rpc_lookup_machine_cred("*"); |
Trond Myklebust | 7c67db3 | 2008-04-07 20:50:11 -0400 | [diff] [blame] | 186 | if (!IS_ERR(cred)) |
| 187 | clp->cl_machine_cred = cred; |
David Howells | 1472728 | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 188 | nfs_fscache_get_client_cookie(clp); |
| 189 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 190 | return clp; |
| 191 | |
Benny Halevy | 7146851 | 2009-04-01 09:22:56 -0400 | [diff] [blame] | 192 | error_cleanup: |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 193 | put_nfs_version(clp->cl_nfs_mod); |
Alexey Khoroshilov | 1f70ef9 | 2014-07-18 03:11:45 +0400 | [diff] [blame] | 194 | error_dealloc: |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 195 | kfree(clp); |
| 196 | error_0: |
Chuck Lever | a21bdd9 | 2009-06-17 18:02:10 -0700 | [diff] [blame] | 197 | return ERR_PTR(err); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 198 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 199 | EXPORT_SYMBOL_GPL(nfs_alloc_client); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 200 | |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 201 | #if IS_ENABLED(CONFIG_NFS_V4) |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 202 | void nfs_cleanup_cb_ident_idr(struct net *net) |
Andy Adamson | f4eecd5 | 2011-01-06 02:04:30 +0000 | [diff] [blame] | 203 | { |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 204 | struct nfs_net *nn = net_generic(net, nfs_net_id); |
| 205 | |
| 206 | idr_destroy(&nn->cb_ident_idr); |
Andy Adamson | f4eecd5 | 2011-01-06 02:04:30 +0000 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | /* nfs_client_lock held */ |
| 210 | static void nfs_cb_idr_remove_locked(struct nfs_client *clp) |
| 211 | { |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 212 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 213 | |
Andy Adamson | f4eecd5 | 2011-01-06 02:04:30 +0000 | [diff] [blame] | 214 | if (clp->cl_cb_ident) |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 215 | idr_remove(&nn->cb_ident_idr, clp->cl_cb_ident); |
Andy Adamson | f4eecd5 | 2011-01-06 02:04:30 +0000 | [diff] [blame] | 216 | } |
| 217 | |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 218 | static void pnfs_init_server(struct nfs_server *server) |
| 219 | { |
| 220 | rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC"); |
| 221 | } |
| 222 | |
Alexandros Batsakis | 888ef2e | 2010-02-05 03:45:03 -0800 | [diff] [blame] | 223 | #else |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 224 | void nfs_cleanup_cb_ident_idr(struct net *net) |
Andy Adamson | f4eecd5 | 2011-01-06 02:04:30 +0000 | [diff] [blame] | 225 | { |
| 226 | } |
| 227 | |
| 228 | static void nfs_cb_idr_remove_locked(struct nfs_client *clp) |
| 229 | { |
| 230 | } |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 231 | |
| 232 | static void pnfs_init_server(struct nfs_server *server) |
| 233 | { |
| 234 | } |
| 235 | |
Alexandros Batsakis | 888ef2e | 2010-02-05 03:45:03 -0800 | [diff] [blame] | 236 | #endif /* CONFIG_NFS_V4 */ |
| 237 | |
| 238 | /* |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 239 | * Destroy a shared client record |
| 240 | */ |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 241 | void nfs_free_client(struct nfs_client *clp) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 242 | { |
Trond Myklebust | 40c55319 | 2007-12-14 14:56:07 -0500 | [diff] [blame] | 243 | dprintk("--> nfs_free_client(%u)\n", clp->rpc_ops->version); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 244 | |
David Howells | 1472728 | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 245 | nfs_fscache_release_client_cookie(clp); |
| 246 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 247 | /* -EIO all pending I/O */ |
| 248 | if (!IS_ERR(clp->cl_rpcclient)) |
| 249 | rpc_shutdown_client(clp->cl_rpcclient); |
| 250 | |
Trond Myklebust | 7c67db3 | 2008-04-07 20:50:11 -0400 | [diff] [blame] | 251 | if (clp->cl_machine_cred != NULL) |
| 252 | put_rpccred(clp->cl_machine_cred); |
| 253 | |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 254 | put_net(clp->cl_net); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 255 | put_nfs_version(clp->cl_nfs_mod); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 256 | kfree(clp->cl_hostname); |
Jeff Layton | f11b2a1 | 2014-06-21 20:52:17 -0400 | [diff] [blame] | 257 | kfree(clp->cl_acceptor); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 258 | kfree(clp); |
| 259 | |
| 260 | dprintk("<-- nfs_free_client()\n"); |
| 261 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 262 | EXPORT_SYMBOL_GPL(nfs_free_client); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 263 | |
| 264 | /* |
| 265 | * Release a reference to a shared client record |
| 266 | */ |
| 267 | void nfs_put_client(struct nfs_client *clp) |
| 268 | { |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 269 | struct nfs_net *nn; |
| 270 | |
David Howells | 27ba851 | 2006-07-30 14:40:56 -0400 | [diff] [blame] | 271 | if (!clp) |
| 272 | return; |
| 273 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 274 | dprintk("--> nfs_put_client({%d})\n", atomic_read(&clp->cl_count)); |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 275 | nn = net_generic(clp->cl_net, nfs_net_id); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 276 | |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 277 | if (atomic_dec_and_lock(&clp->cl_count, &nn->nfs_client_lock)) { |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 278 | list_del(&clp->cl_share_link); |
Andy Adamson | f4eecd5 | 2011-01-06 02:04:30 +0000 | [diff] [blame] | 279 | nfs_cb_idr_remove_locked(clp); |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 280 | spin_unlock(&nn->nfs_client_lock); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 281 | |
Trond Myklebust | 1fea73a8 | 2012-10-15 11:24:57 -0400 | [diff] [blame] | 282 | WARN_ON_ONCE(!list_empty(&clp->cl_superblocks)); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 283 | |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 284 | clp->rpc_ops->free_client(clp); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 285 | } |
| 286 | } |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 287 | EXPORT_SYMBOL_GPL(nfs_put_client); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 288 | |
Trond Myklebust | 9082a5c | 2008-12-23 15:21:53 -0500 | [diff] [blame] | 289 | #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 290 | /* |
| 291 | * Test if two ip6 socket addresses refer to the same socket by |
| 292 | * comparing relevant fields. The padding bytes specifically, are not |
| 293 | * compared. sin6_flowinfo is not compared because it only affects QoS |
| 294 | * and sin6_scope_id is only compared if the address is "link local" |
| 295 | * because "link local" addresses need only be unique to a specific |
| 296 | * link. Conversely, ordinary unicast addresses might have different |
| 297 | * sin6_scope_id. |
| 298 | * |
| 299 | * The caller should ensure both socket addresses are AF_INET6. |
| 300 | */ |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 301 | static int nfs_sockaddr_match_ipaddr6(const struct sockaddr *sa1, |
| 302 | const struct sockaddr *sa2) |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 303 | { |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 304 | const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sa1; |
| 305 | const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sa2; |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 306 | |
Mi Jinlong | b9dd3ab | 2011-10-12 15:09:34 +0800 | [diff] [blame] | 307 | if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr)) |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 308 | return 0; |
Mi Jinlong | b9dd3ab | 2011-10-12 15:09:34 +0800 | [diff] [blame] | 309 | else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL) |
| 310 | return sin1->sin6_scope_id == sin2->sin6_scope_id; |
Trond Myklebust | 3b0d3f9 | 2008-01-03 13:28:58 -0500 | [diff] [blame] | 311 | |
Mi Jinlong | b9dd3ab | 2011-10-12 15:09:34 +0800 | [diff] [blame] | 312 | return 1; |
Trond Myklebust | 3b0d3f9 | 2008-01-03 13:28:58 -0500 | [diff] [blame] | 313 | } |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 314 | #else /* !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE) */ |
| 315 | static int nfs_sockaddr_match_ipaddr6(const struct sockaddr *sa1, |
| 316 | const struct sockaddr *sa2) |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 317 | { |
| 318 | return 0; |
| 319 | } |
Trond Myklebust | 9082a5c | 2008-12-23 15:21:53 -0500 | [diff] [blame] | 320 | #endif |
Trond Myklebust | 3b0d3f9 | 2008-01-03 13:28:58 -0500 | [diff] [blame] | 321 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 322 | /* |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 323 | * Test if two ip4 socket addresses refer to the same socket, by |
| 324 | * comparing relevant fields. The padding bytes specifically, are |
| 325 | * not compared. |
| 326 | * |
| 327 | * The caller should ensure both socket addresses are AF_INET. |
| 328 | */ |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 329 | static int nfs_sockaddr_match_ipaddr4(const struct sockaddr *sa1, |
| 330 | const struct sockaddr *sa2) |
| 331 | { |
| 332 | const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sa1; |
| 333 | const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sa2; |
| 334 | |
| 335 | return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr; |
| 336 | } |
| 337 | |
| 338 | static int nfs_sockaddr_cmp_ip6(const struct sockaddr *sa1, |
| 339 | const struct sockaddr *sa2) |
| 340 | { |
| 341 | const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sa1; |
| 342 | const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sa2; |
| 343 | |
| 344 | return nfs_sockaddr_match_ipaddr6(sa1, sa2) && |
| 345 | (sin1->sin6_port == sin2->sin6_port); |
| 346 | } |
| 347 | |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 348 | static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1, |
| 349 | const struct sockaddr *sa2) |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 350 | { |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 351 | const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sa1; |
| 352 | const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sa2; |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 353 | |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 354 | return nfs_sockaddr_match_ipaddr4(sa1, sa2) && |
| 355 | (sin1->sin_port == sin2->sin_port); |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 356 | } |
| 357 | |
Bryan Schumaker | 4b7c8dd | 2012-03-12 11:28:24 -0400 | [diff] [blame] | 358 | #if defined(CONFIG_NFS_V4_1) |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 359 | /* |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 360 | * Test if two socket addresses represent the same actual socket, |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 361 | * by comparing (only) relevant fields, excluding the port number. |
| 362 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 363 | int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, |
| 364 | const struct sockaddr *sa2) |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 365 | { |
| 366 | if (sa1->sa_family != sa2->sa_family) |
| 367 | return 0; |
| 368 | |
| 369 | switch (sa1->sa_family) { |
| 370 | case AF_INET: |
| 371 | return nfs_sockaddr_match_ipaddr4(sa1, sa2); |
| 372 | case AF_INET6: |
| 373 | return nfs_sockaddr_match_ipaddr6(sa1, sa2); |
| 374 | } |
| 375 | return 0; |
| 376 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 377 | EXPORT_SYMBOL_GPL(nfs_sockaddr_match_ipaddr); |
Bryan Schumaker | 4b7c8dd | 2012-03-12 11:28:24 -0400 | [diff] [blame] | 378 | #endif /* CONFIG_NFS_V4_1 */ |
Chuck Lever | 3c8c45d | 2009-03-18 20:48:14 -0400 | [diff] [blame] | 379 | |
| 380 | /* |
| 381 | * Test if two socket addresses represent the same actual socket, |
| 382 | * by comparing (only) relevant fields, including the port number. |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 383 | */ |
| 384 | static int nfs_sockaddr_cmp(const struct sockaddr *sa1, |
| 385 | const struct sockaddr *sa2) |
| 386 | { |
| 387 | if (sa1->sa_family != sa2->sa_family) |
| 388 | return 0; |
| 389 | |
| 390 | switch (sa1->sa_family) { |
| 391 | case AF_INET: |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 392 | return nfs_sockaddr_cmp_ip4(sa1, sa2); |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 393 | case AF_INET6: |
Trond Myklebust | 9f4c899 | 2009-03-12 14:51:32 -0400 | [diff] [blame] | 394 | return nfs_sockaddr_cmp_ip6(sa1, sa2); |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 395 | } |
| 396 | return 0; |
| 397 | } |
| 398 | |
Trond Myklebust | 3fbd67a | 2008-01-26 01:06:40 -0500 | [diff] [blame] | 399 | /* |
Trond Myklebust | c81468a | 2007-12-14 14:56:05 -0500 | [diff] [blame] | 400 | * Find an nfs_client on the list that matches the initialisation data |
| 401 | * that is supplied. |
| 402 | */ |
| 403 | static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *data) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 404 | { |
| 405 | struct nfs_client *clp; |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 406 | const struct sockaddr *sap = data->addr; |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 407 | struct nfs_net *nn = net_generic(data->net, nfs_net_id); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 408 | |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 409 | list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 410 | const struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; |
Trond Myklebust | 13bbc06 | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 411 | /* Don't match clients that failed to initialise properly */ |
| 412 | if (clp->cl_cons_state < 0) |
| 413 | continue; |
| 414 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 415 | /* Different NFS versions cannot share the same nfs_client */ |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 416 | if (clp->rpc_ops != data->nfs_mod->rpc_ops) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 417 | continue; |
| 418 | |
Trond Myklebust | 59dca3b | 2008-01-03 16:29:06 -0500 | [diff] [blame] | 419 | if (clp->cl_proto != data->proto) |
| 420 | continue; |
Benny Halevy | 5aae4a9 | 2009-04-01 09:21:50 -0400 | [diff] [blame] | 421 | /* Match nfsv4 minorversion */ |
| 422 | if (clp->cl_minorversion != data->minorversion) |
| 423 | continue; |
Trond Myklebust | c81468a | 2007-12-14 14:56:05 -0500 | [diff] [blame] | 424 | /* Match the full socket address */ |
Ian Dall | d7371c4 | 2009-03-10 20:33:22 -0400 | [diff] [blame] | 425 | if (!nfs_sockaddr_cmp(sap, clap)) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 426 | continue; |
| 427 | |
Trond Myklebust | c81468a | 2007-12-14 14:56:05 -0500 | [diff] [blame] | 428 | atomic_inc(&clp->cl_count); |
| 429 | return clp; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 430 | } |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 431 | return NULL; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 432 | } |
| 433 | |
Trond Myklebust | 4697bd5 | 2012-05-23 13:24:36 -0400 | [diff] [blame] | 434 | static bool nfs_client_init_is_complete(const struct nfs_client *clp) |
| 435 | { |
| 436 | return clp->cl_cons_state != NFS_CS_INITING; |
| 437 | } |
| 438 | |
| 439 | int nfs_wait_client_init_complete(const struct nfs_client *clp) |
| 440 | { |
| 441 | return wait_event_killable(nfs_client_active_wq, |
| 442 | nfs_client_init_is_complete(clp)); |
| 443 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 444 | EXPORT_SYMBOL_GPL(nfs_wait_client_init_complete); |
Trond Myklebust | 4697bd5 | 2012-05-23 13:24:36 -0400 | [diff] [blame] | 445 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 446 | /* |
Chuck Lever | f411703 | 2012-05-21 22:45:50 -0400 | [diff] [blame] | 447 | * Found an existing client. Make sure it's ready before returning. |
| 448 | */ |
| 449 | static struct nfs_client * |
| 450 | nfs_found_client(const struct nfs_client_initdata *cl_init, |
| 451 | struct nfs_client *clp) |
| 452 | { |
| 453 | int error; |
| 454 | |
Trond Myklebust | 4697bd5 | 2012-05-23 13:24:36 -0400 | [diff] [blame] | 455 | error = nfs_wait_client_init_complete(clp); |
Chuck Lever | f411703 | 2012-05-21 22:45:50 -0400 | [diff] [blame] | 456 | if (error < 0) { |
| 457 | nfs_put_client(clp); |
| 458 | return ERR_PTR(-ERESTARTSYS); |
| 459 | } |
| 460 | |
| 461 | if (clp->cl_cons_state < NFS_CS_READY) { |
| 462 | error = clp->cl_cons_state; |
| 463 | nfs_put_client(clp); |
| 464 | return ERR_PTR(error); |
| 465 | } |
| 466 | |
Trond Myklebust | 54ac471 | 2012-05-23 13:26:10 -0400 | [diff] [blame] | 467 | smp_rmb(); |
| 468 | |
Chuck Lever | f411703 | 2012-05-21 22:45:50 -0400 | [diff] [blame] | 469 | dprintk("<-- %s found nfs_client %p for %s\n", |
| 470 | __func__, clp, cl_init->hostname ?: ""); |
| 471 | return clp; |
| 472 | } |
| 473 | |
| 474 | /* |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 475 | * Look up a client by IP address and protocol version |
| 476 | * - creates a new record if one doesn't yet exist |
| 477 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 478 | struct nfs_client * |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 479 | nfs_get_client(const struct nfs_client_initdata *cl_init, |
| 480 | const struct rpc_timeout *timeparms, |
| 481 | const char *ip_addr, |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 482 | rpc_authflavor_t authflavour) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 483 | { |
| 484 | struct nfs_client *clp, *new = NULL; |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 485 | struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 486 | const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 487 | |
Peng Tao | 31434f4 | 2014-07-08 11:45:48 +0800 | [diff] [blame] | 488 | if (cl_init->hostname == NULL) { |
| 489 | WARN_ON(1); |
| 490 | return NULL; |
| 491 | } |
| 492 | |
Chuck Lever | d7422c4 | 2007-12-10 14:58:51 -0500 | [diff] [blame] | 493 | dprintk("--> nfs_get_client(%s,v%u)\n", |
Peng Tao | 31434f4 | 2014-07-08 11:45:48 +0800 | [diff] [blame] | 494 | cl_init->hostname, rpc_ops->version); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 495 | |
| 496 | /* see if the client already exists */ |
| 497 | do { |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 498 | spin_lock(&nn->nfs_client_lock); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 499 | |
Trond Myklebust | c81468a | 2007-12-14 14:56:05 -0500 | [diff] [blame] | 500 | clp = nfs_match_client(cl_init); |
Chuck Lever | f411703 | 2012-05-21 22:45:50 -0400 | [diff] [blame] | 501 | if (clp) { |
| 502 | spin_unlock(&nn->nfs_client_lock); |
| 503 | if (new) |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 504 | new->rpc_ops->free_client(new); |
Chuck Lever | f411703 | 2012-05-21 22:45:50 -0400 | [diff] [blame] | 505 | return nfs_found_client(cl_init, clp); |
| 506 | } |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 507 | if (new) { |
Chuck Lever | 05f4c35 | 2012-09-14 17:24:32 -0400 | [diff] [blame] | 508 | list_add_tail(&new->cl_share_link, |
| 509 | &nn->nfs_client_list); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 510 | spin_unlock(&nn->nfs_client_lock); |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 511 | new->cl_flags = cl_init->init_flags; |
Andy Adamson | f840729 | 2013-07-24 11:59:49 -0400 | [diff] [blame] | 512 | return rpc_ops->init_client(new, timeparms, ip_addr); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 513 | } |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 514 | |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 515 | spin_unlock(&nn->nfs_client_lock); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 516 | |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 517 | new = rpc_ops->alloc_client(cl_init); |
Chuck Lever | a21bdd9 | 2009-06-17 18:02:10 -0700 | [diff] [blame] | 518 | } while (!IS_ERR(new)); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 519 | |
Chuck Lever | f411703 | 2012-05-21 22:45:50 -0400 | [diff] [blame] | 520 | dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n", |
Peng Tao | 31434f4 | 2014-07-08 11:45:48 +0800 | [diff] [blame] | 521 | cl_init->hostname, PTR_ERR(new)); |
Chuck Lever | a21bdd9 | 2009-06-17 18:02:10 -0700 | [diff] [blame] | 522 | return new; |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 523 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 524 | EXPORT_SYMBOL_GPL(nfs_get_client); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 525 | |
| 526 | /* |
| 527 | * Mark a server as ready or failed |
| 528 | */ |
Andy Adamson | 76db6d9 | 2009-04-01 09:22:38 -0400 | [diff] [blame] | 529 | void nfs_mark_client_ready(struct nfs_client *clp, int state) |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 530 | { |
Trond Myklebust | 54ac471 | 2012-05-23 13:26:10 -0400 | [diff] [blame] | 531 | smp_wmb(); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 532 | clp->cl_cons_state = state; |
| 533 | wake_up_all(&nfs_client_active_wq); |
| 534 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 535 | EXPORT_SYMBOL_GPL(nfs_mark_client_ready); |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 536 | |
| 537 | /* |
| 538 | * Initialise the timeout values for a connection |
| 539 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 540 | void nfs_init_timeout_values(struct rpc_timeout *to, int proto, |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 541 | unsigned int timeo, unsigned int retrans) |
| 542 | { |
| 543 | to->to_initval = timeo * HZ / 10; |
| 544 | to->to_retries = retrans; |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 545 | |
| 546 | switch (proto) { |
\"Talpey, Thomas\ | 0896a72 | 2007-09-10 13:48:23 -0400 | [diff] [blame] | 547 | case XPRT_TRANSPORT_TCP: |
\"Talpey, Thomas\ | 2cf7ff7 | 2007-09-10 13:49:41 -0400 | [diff] [blame] | 548 | case XPRT_TRANSPORT_RDMA: |
Trond Myklebust | 259875e | 2008-07-02 14:43:47 -0400 | [diff] [blame] | 549 | if (to->to_retries == 0) |
| 550 | to->to_retries = NFS_DEF_TCP_RETRANS; |
Trond Myklebust | 7a3e3e1 | 2007-12-20 16:03:57 -0500 | [diff] [blame] | 551 | if (to->to_initval == 0) |
Trond Myklebust | 259875e | 2008-07-02 14:43:47 -0400 | [diff] [blame] | 552 | to->to_initval = NFS_DEF_TCP_TIMEO * HZ / 10; |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 553 | if (to->to_initval > NFS_MAX_TCP_TIMEOUT) |
| 554 | to->to_initval = NFS_MAX_TCP_TIMEOUT; |
| 555 | to->to_increment = to->to_initval; |
| 556 | to->to_maxval = to->to_initval + (to->to_increment * to->to_retries); |
Trond Myklebust | 7a3e3e1 | 2007-12-20 16:03:57 -0500 | [diff] [blame] | 557 | if (to->to_maxval > NFS_MAX_TCP_TIMEOUT) |
| 558 | to->to_maxval = NFS_MAX_TCP_TIMEOUT; |
| 559 | if (to->to_maxval < to->to_initval) |
| 560 | to->to_maxval = to->to_initval; |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 561 | to->to_exponential = 0; |
| 562 | break; |
\"Talpey, Thomas\ | 0896a72 | 2007-09-10 13:48:23 -0400 | [diff] [blame] | 563 | case XPRT_TRANSPORT_UDP: |
Trond Myklebust | 259875e | 2008-07-02 14:43:47 -0400 | [diff] [blame] | 564 | if (to->to_retries == 0) |
| 565 | to->to_retries = NFS_DEF_UDP_RETRANS; |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 566 | if (!to->to_initval) |
Trond Myklebust | 259875e | 2008-07-02 14:43:47 -0400 | [diff] [blame] | 567 | to->to_initval = NFS_DEF_UDP_TIMEO * HZ / 10; |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 568 | if (to->to_initval > NFS_MAX_UDP_TIMEOUT) |
| 569 | to->to_initval = NFS_MAX_UDP_TIMEOUT; |
| 570 | to->to_maxval = NFS_MAX_UDP_TIMEOUT; |
| 571 | to->to_exponential = 1; |
| 572 | break; |
Trond Myklebust | 259875e | 2008-07-02 14:43:47 -0400 | [diff] [blame] | 573 | default: |
| 574 | BUG(); |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 575 | } |
| 576 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 577 | EXPORT_SYMBOL_GPL(nfs_init_timeout_values); |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 578 | |
| 579 | /* |
| 580 | * Create an RPC client handle |
| 581 | */ |
Bryan Schumaker | 428360d | 2012-07-16 16:39:17 -0400 | [diff] [blame] | 582 | int nfs_create_rpc_client(struct nfs_client *clp, |
| 583 | const struct rpc_timeout *timeparms, |
| 584 | rpc_authflavor_t flavor) |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 585 | { |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 586 | struct rpc_clnt *clnt = NULL; |
Chuck Lever | 41877d2 | 2006-08-22 20:06:20 -0400 | [diff] [blame] | 587 | struct rpc_create_args args = { |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 588 | .net = clp->cl_net, |
Trond Myklebust | 59dca3b | 2008-01-03 16:29:06 -0500 | [diff] [blame] | 589 | .protocol = clp->cl_proto, |
Chuck Lever | 41877d2 | 2006-08-22 20:06:20 -0400 | [diff] [blame] | 590 | .address = (struct sockaddr *)&clp->cl_addr, |
Chuck Lever | 6e4cffd | 2007-12-10 14:58:15 -0500 | [diff] [blame] | 591 | .addrsize = clp->cl_addrlen, |
Trond Myklebust | 3317023 | 2007-12-20 16:03:59 -0500 | [diff] [blame] | 592 | .timeout = timeparms, |
Chuck Lever | 41877d2 | 2006-08-22 20:06:20 -0400 | [diff] [blame] | 593 | .servername = clp->cl_hostname, |
| 594 | .program = &nfs_program, |
| 595 | .version = clp->rpc_ops->version, |
| 596 | .authflavor = flavor, |
| 597 | }; |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 598 | |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 599 | if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags)) |
Chuck Lever | 4a01b8a | 2008-12-23 15:21:35 -0500 | [diff] [blame] | 600 | args.flags |= RPC_CLNT_CREATE_DISCRTRY; |
Trond Myklebust | 9987524 | 2013-09-24 12:06:07 -0400 | [diff] [blame] | 601 | if (test_bit(NFS_CS_NO_RETRANS_TIMEOUT, &clp->cl_flags)) |
| 602 | args.flags |= RPC_CLNT_CREATE_NO_RETRANS_TIMEOUT; |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 603 | if (test_bit(NFS_CS_NORESVPORT, &clp->cl_flags)) |
Chuck Lever | 4a01b8a | 2008-12-23 15:21:35 -0500 | [diff] [blame] | 604 | args.flags |= RPC_CLNT_CREATE_NONPRIVPORT; |
Trond Myklebust | 98f98cf | 2013-04-14 11:49:51 -0400 | [diff] [blame] | 605 | if (test_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags)) |
| 606 | args.flags |= RPC_CLNT_CREATE_INFINITE_SLOTS; |
Chuck Lever | 4a01b8a | 2008-12-23 15:21:35 -0500 | [diff] [blame] | 607 | |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 608 | if (!IS_ERR(clp->cl_rpcclient)) |
| 609 | return 0; |
| 610 | |
Chuck Lever | 41877d2 | 2006-08-22 20:06:20 -0400 | [diff] [blame] | 611 | clnt = rpc_create(&args); |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 612 | if (IS_ERR(clnt)) { |
| 613 | dprintk("%s: cannot create RPC client. Error = %ld\n", |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 614 | __func__, PTR_ERR(clnt)); |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 615 | return PTR_ERR(clnt); |
| 616 | } |
| 617 | |
David Howells | 5006a76 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 618 | clp->cl_rpcclient = clnt; |
| 619 | return 0; |
| 620 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 621 | EXPORT_SYMBOL_GPL(nfs_create_rpc_client); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 622 | |
| 623 | /* |
| 624 | * Version 2 or 3 client destruction |
| 625 | */ |
| 626 | static void nfs_destroy_server(struct nfs_server *server) |
| 627 | { |
NeilBrown | f259613 | 2012-12-13 15:14:36 +1100 | [diff] [blame] | 628 | if (server->nlm_host) |
Chuck Lever | 9289e7f | 2008-01-11 17:09:52 -0500 | [diff] [blame] | 629 | nlmclnt_done(server->nlm_host); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | /* |
| 633 | * Version 2 or 3 lockd setup |
| 634 | */ |
| 635 | static int nfs_start_lockd(struct nfs_server *server) |
| 636 | { |
Chuck Lever | 9289e7f | 2008-01-11 17:09:52 -0500 | [diff] [blame] | 637 | struct nlm_host *host; |
| 638 | struct nfs_client *clp = server->nfs_client; |
Chuck Lever | 883bb16 | 2008-01-15 16:04:20 -0500 | [diff] [blame] | 639 | struct nlmclnt_initdata nlm_init = { |
| 640 | .hostname = clp->cl_hostname, |
| 641 | .address = (struct sockaddr *)&clp->cl_addr, |
| 642 | .addrlen = clp->cl_addrlen, |
Chuck Lever | 883bb16 | 2008-01-15 16:04:20 -0500 | [diff] [blame] | 643 | .nfs_version = clp->rpc_ops->version, |
Chuck Lever | 0cb2659 | 2008-12-23 15:21:38 -0500 | [diff] [blame] | 644 | .noresvport = server->flags & NFS_MOUNT_NORESVPORT ? |
| 645 | 1 : 0, |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 646 | .net = clp->cl_net, |
Chuck Lever | 883bb16 | 2008-01-15 16:04:20 -0500 | [diff] [blame] | 647 | }; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 648 | |
Chuck Lever | 883bb16 | 2008-01-15 16:04:20 -0500 | [diff] [blame] | 649 | if (nlm_init.nfs_version > 3) |
Chuck Lever | 9289e7f | 2008-01-11 17:09:52 -0500 | [diff] [blame] | 650 | return 0; |
Suresh Jayaraman | 5eebde2 | 2010-09-23 08:55:58 -0400 | [diff] [blame] | 651 | if ((server->flags & NFS_MOUNT_LOCAL_FLOCK) && |
| 652 | (server->flags & NFS_MOUNT_LOCAL_FCNTL)) |
Chuck Lever | 9289e7f | 2008-01-11 17:09:52 -0500 | [diff] [blame] | 653 | return 0; |
| 654 | |
Trond Myklebust | 8a6e5de | 2009-09-23 14:36:37 -0400 | [diff] [blame] | 655 | switch (clp->cl_proto) { |
| 656 | default: |
| 657 | nlm_init.protocol = IPPROTO_TCP; |
| 658 | break; |
| 659 | case XPRT_TRANSPORT_UDP: |
| 660 | nlm_init.protocol = IPPROTO_UDP; |
| 661 | } |
| 662 | |
Chuck Lever | 883bb16 | 2008-01-15 16:04:20 -0500 | [diff] [blame] | 663 | host = nlmclnt_init(&nlm_init); |
Chuck Lever | 9289e7f | 2008-01-11 17:09:52 -0500 | [diff] [blame] | 664 | if (IS_ERR(host)) |
| 665 | return PTR_ERR(host); |
| 666 | |
| 667 | server->nlm_host = host; |
| 668 | server->destroy = nfs_destroy_server; |
| 669 | return 0; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 670 | } |
| 671 | |
| 672 | /* |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 673 | * Create a general RPC client |
| 674 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 675 | int nfs_init_server_rpcclient(struct nfs_server *server, |
Trond Myklebust | 3317023 | 2007-12-20 16:03:59 -0500 | [diff] [blame] | 676 | const struct rpc_timeout *timeo, |
| 677 | rpc_authflavor_t pseudoflavour) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 678 | { |
| 679 | struct nfs_client *clp = server->nfs_client; |
| 680 | |
Chuck Lever | ba9b584 | 2012-09-14 17:24:02 -0400 | [diff] [blame] | 681 | server->client = rpc_clone_client_set_auth(clp->cl_rpcclient, |
| 682 | pseudoflavour); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 683 | if (IS_ERR(server->client)) { |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 684 | dprintk("%s: couldn't create rpc_client!\n", __func__); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 685 | return PTR_ERR(server->client); |
| 686 | } |
| 687 | |
Trond Myklebust | 3317023 | 2007-12-20 16:03:59 -0500 | [diff] [blame] | 688 | memcpy(&server->client->cl_timeout_default, |
| 689 | timeo, |
| 690 | sizeof(server->client->cl_timeout_default)); |
| 691 | server->client->cl_timeout = &server->client->cl_timeout_default; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 692 | server->client->cl_softrtry = 0; |
| 693 | if (server->flags & NFS_MOUNT_SOFT) |
| 694 | server->client->cl_softrtry = 1; |
| 695 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 696 | return 0; |
| 697 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 698 | EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 699 | |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 700 | /** |
| 701 | * nfs_init_client - Initialise an NFS2 or NFS3 client |
| 702 | * |
| 703 | * @clp: nfs_client to initialise |
| 704 | * @timeparms: timeout parameters for underlying RPC transport |
| 705 | * @ip_addr: IP presentation address (not used) |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 706 | * |
| 707 | * Returns pointer to an NFS client, or an ERR_PTR value. |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 708 | */ |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 709 | struct nfs_client *nfs_init_client(struct nfs_client *clp, |
| 710 | const struct rpc_timeout *timeparms, |
Andy Adamson | f840729 | 2013-07-24 11:59:49 -0400 | [diff] [blame] | 711 | const char *ip_addr) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 712 | { |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 713 | int error; |
| 714 | |
| 715 | if (clp->cl_cons_state == NFS_CS_READY) { |
| 716 | /* the client is already initialised */ |
| 717 | dprintk("<-- nfs_init_client() = 0 [already %p]\n", clp); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 718 | return clp; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 719 | } |
| 720 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 721 | /* |
| 722 | * Create a client RPC handle for doing FSSTAT with UNIX auth only |
| 723 | * - RFC 2623, sec 2.3.2 |
| 724 | */ |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 725 | error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 726 | if (error < 0) |
| 727 | goto error; |
| 728 | nfs_mark_client_ready(clp, NFS_CS_READY); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 729 | return clp; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 730 | |
| 731 | error: |
| 732 | nfs_mark_client_ready(clp, error); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 733 | nfs_put_client(clp); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 734 | dprintk("<-- nfs_init_client() = xerror %d\n", error); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 735 | return ERR_PTR(error); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 736 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 737 | EXPORT_SYMBOL_GPL(nfs_init_client); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 738 | |
| 739 | /* |
| 740 | * Create a version 2 or 3 client |
| 741 | */ |
\"Talpey, Thomas\ | 2283f8d | 2007-09-10 13:43:56 -0400 | [diff] [blame] | 742 | static int nfs_init_server(struct nfs_server *server, |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 743 | const struct nfs_parsed_mount_data *data, |
| 744 | struct nfs_subversion *nfs_mod) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 745 | { |
Trond Myklebust | 3a49802 | 2007-12-14 14:56:04 -0500 | [diff] [blame] | 746 | struct nfs_client_initdata cl_init = { |
| 747 | .hostname = data->nfs_server.hostname, |
Chuck Lever | d7422c4 | 2007-12-10 14:58:51 -0500 | [diff] [blame] | 748 | .addr = (const struct sockaddr *)&data->nfs_server.address, |
Chuck Lever | 4c56801 | 2007-12-10 14:59:28 -0500 | [diff] [blame] | 749 | .addrlen = data->nfs_server.addrlen, |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 750 | .nfs_mod = nfs_mod, |
Trond Myklebust | 59dca3b | 2008-01-03 16:29:06 -0500 | [diff] [blame] | 751 | .proto = data->nfs_server.protocol, |
Stanislav Kinsbursky | e50a7a1 | 2012-01-10 16:12:46 +0400 | [diff] [blame] | 752 | .net = data->net, |
Trond Myklebust | 3a49802 | 2007-12-14 14:56:04 -0500 | [diff] [blame] | 753 | }; |
Trond Myklebust | 3317023 | 2007-12-20 16:03:59 -0500 | [diff] [blame] | 754 | struct rpc_timeout timeparms; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 755 | struct nfs_client *clp; |
Trond Myklebust | 3a49802 | 2007-12-14 14:56:04 -0500 | [diff] [blame] | 756 | int error; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 757 | |
| 758 | dprintk("--> nfs_init_server()\n"); |
| 759 | |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 760 | nfs_init_timeout_values(&timeparms, data->nfs_server.protocol, |
| 761 | data->timeo, data->retrans); |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 762 | if (data->flags & NFS_MOUNT_NORESVPORT) |
| 763 | set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 764 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 765 | /* Allocate or find a client reference we can use */ |
Chuck Lever | 4bf590e | 2012-05-21 22:46:07 -0400 | [diff] [blame] | 766 | clp = nfs_get_client(&cl_init, &timeparms, NULL, RPC_AUTH_UNIX); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 767 | if (IS_ERR(clp)) { |
| 768 | dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp)); |
| 769 | return PTR_ERR(clp); |
| 770 | } |
| 771 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 772 | server->nfs_client = clp; |
| 773 | |
| 774 | /* Initialise the client representation from the mount data */ |
Trond Myklebust | ff3525a | 2008-08-15 16:59:14 -0400 | [diff] [blame] | 775 | server->flags = data->flags; |
David Howells | b797cac | 2009-04-03 16:42:48 +0100 | [diff] [blame] | 776 | server->options = data->options; |
Trond Myklebust | 62ab460 | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 777 | server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID| |
| 778 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP| |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 779 | NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME|NFS_CAP_CHANGE_ATTR; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 780 | |
| 781 | if (data->rsize) |
| 782 | server->rsize = nfs_block_size(data->rsize, NULL); |
| 783 | if (data->wsize) |
| 784 | server->wsize = nfs_block_size(data->wsize, NULL); |
| 785 | |
| 786 | server->acregmin = data->acregmin * HZ; |
| 787 | server->acregmax = data->acregmax * HZ; |
| 788 | server->acdirmin = data->acdirmin * HZ; |
| 789 | server->acdirmax = data->acdirmax * HZ; |
| 790 | |
| 791 | /* Start lockd here, before we might error out */ |
| 792 | error = nfs_start_lockd(server); |
| 793 | if (error < 0) |
| 794 | goto error; |
| 795 | |
Chuck Lever | f22d6d7 | 2008-03-14 14:10:22 -0400 | [diff] [blame] | 796 | server->port = data->nfs_server.port; |
Weston Andros Adamson | 0f5f49b | 2013-10-18 15:15:17 -0400 | [diff] [blame] | 797 | server->auth_info = data->auth_info; |
Chuck Lever | f22d6d7 | 2008-03-14 14:10:22 -0400 | [diff] [blame] | 798 | |
Weston Andros Adamson | a3f73c2 | 2013-10-18 15:15:16 -0400 | [diff] [blame] | 799 | error = nfs_init_server_rpcclient(server, &timeparms, |
| 800 | data->selected_flavor); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 801 | if (error < 0) |
| 802 | goto error; |
| 803 | |
Chuck Lever | 3f8400d | 2008-03-14 14:10:30 -0400 | [diff] [blame] | 804 | /* Preserve the values of mount_server-related mount options */ |
| 805 | if (data->mount_server.addrlen) { |
| 806 | memcpy(&server->mountd_address, &data->mount_server.address, |
| 807 | data->mount_server.addrlen); |
| 808 | server->mountd_addrlen = data->mount_server.addrlen; |
| 809 | } |
| 810 | server->mountd_version = data->mount_server.version; |
| 811 | server->mountd_port = data->mount_server.port; |
| 812 | server->mountd_protocol = data->mount_server.protocol; |
| 813 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 814 | server->namelen = data->namlen; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 815 | dprintk("<-- nfs_init_server() = 0 [new %p]\n", clp); |
| 816 | return 0; |
| 817 | |
| 818 | error: |
| 819 | server->nfs_client = NULL; |
| 820 | nfs_put_client(clp); |
| 821 | dprintk("<-- nfs_init_server() = xerror %d\n", error); |
| 822 | return error; |
| 823 | } |
| 824 | |
| 825 | /* |
| 826 | * Load up the server record from information gained in an fsinfo record |
| 827 | */ |
Benny Halevy | 738fd0f3 | 2011-07-30 20:52:36 -0400 | [diff] [blame] | 828 | static void nfs_server_set_fsinfo(struct nfs_server *server, |
| 829 | struct nfs_fh *mntfh, |
| 830 | struct nfs_fsinfo *fsinfo) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 831 | { |
| 832 | unsigned long max_rpc_payload; |
| 833 | |
| 834 | /* Work out a lot of parameters */ |
| 835 | if (server->rsize == 0) |
| 836 | server->rsize = nfs_block_size(fsinfo->rtpref, NULL); |
| 837 | if (server->wsize == 0) |
| 838 | server->wsize = nfs_block_size(fsinfo->wtpref, NULL); |
| 839 | |
| 840 | if (fsinfo->rtmax >= 512 && server->rsize > fsinfo->rtmax) |
| 841 | server->rsize = nfs_block_size(fsinfo->rtmax, NULL); |
| 842 | if (fsinfo->wtmax >= 512 && server->wsize > fsinfo->wtmax) |
| 843 | server->wsize = nfs_block_size(fsinfo->wtmax, NULL); |
| 844 | |
| 845 | max_rpc_payload = nfs_block_size(rpc_max_payload(server->client), NULL); |
| 846 | if (server->rsize > max_rpc_payload) |
| 847 | server->rsize = max_rpc_payload; |
| 848 | if (server->rsize > NFS_MAX_FILE_IO_SIZE) |
| 849 | server->rsize = NFS_MAX_FILE_IO_SIZE; |
| 850 | server->rpages = (server->rsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; |
Peter Zijlstra | e0bf68d | 2007-10-16 23:25:46 -0700 | [diff] [blame] | 851 | |
Jens Axboe | d993831 | 2009-06-12 14:45:52 +0200 | [diff] [blame] | 852 | server->backing_dev_info.name = "nfs"; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 853 | server->backing_dev_info.ra_pages = server->rpages * NFS_MAX_READAHEAD; |
| 854 | |
| 855 | if (server->wsize > max_rpc_payload) |
| 856 | server->wsize = max_rpc_payload; |
| 857 | if (server->wsize > NFS_MAX_FILE_IO_SIZE) |
| 858 | server->wsize = NFS_MAX_FILE_IO_SIZE; |
| 859 | server->wpages = (server->wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 860 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 861 | server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL); |
| 862 | |
| 863 | server->dtsize = nfs_block_size(fsinfo->dtpref, NULL); |
Bryan Schumaker | 56e4ebf | 2010-10-20 15:44:37 -0400 | [diff] [blame] | 864 | if (server->dtsize > PAGE_CACHE_SIZE * NFS_MAX_READDIR_PAGES) |
| 865 | server->dtsize = PAGE_CACHE_SIZE * NFS_MAX_READDIR_PAGES; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 866 | if (server->dtsize > server->rsize) |
| 867 | server->dtsize = server->rsize; |
| 868 | |
| 869 | if (server->flags & NFS_MOUNT_NOAC) { |
| 870 | server->acregmin = server->acregmax = 0; |
| 871 | server->acdirmin = server->acdirmax = 0; |
| 872 | } |
| 873 | |
| 874 | server->maxfilesize = fsinfo->maxfilesize; |
| 875 | |
Ricardo Labiaga | 6b96724 | 2010-10-12 16:30:05 -0700 | [diff] [blame] | 876 | server->time_delta = fsinfo->time_delta; |
| 877 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 878 | /* We're airborne Set socket buffersize */ |
| 879 | rpc_setbufsize(server->client, server->wsize + 100, server->rsize + 100); |
| 880 | } |
| 881 | |
| 882 | /* |
| 883 | * Probe filesystem information, including the FSID on v2/v3 |
| 884 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 885 | int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs_fattr *fattr) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 886 | { |
| 887 | struct nfs_fsinfo fsinfo; |
| 888 | struct nfs_client *clp = server->nfs_client; |
| 889 | int error; |
| 890 | |
| 891 | dprintk("--> nfs_probe_fsinfo()\n"); |
| 892 | |
| 893 | if (clp->rpc_ops->set_capabilities != NULL) { |
| 894 | error = clp->rpc_ops->set_capabilities(server, mntfh); |
| 895 | if (error < 0) |
| 896 | goto out_error; |
| 897 | } |
| 898 | |
| 899 | fsinfo.fattr = fattr; |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 900 | fsinfo.layouttype = 0; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 901 | error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo); |
| 902 | if (error < 0) |
| 903 | goto out_error; |
| 904 | |
Benny Halevy | 738fd0f3 | 2011-07-30 20:52:36 -0400 | [diff] [blame] | 905 | nfs_server_set_fsinfo(server, mntfh, &fsinfo); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 906 | |
| 907 | /* Get some general file system info */ |
| 908 | if (server->namelen == 0) { |
| 909 | struct nfs_pathconf pathinfo; |
| 910 | |
| 911 | pathinfo.fattr = fattr; |
| 912 | nfs_fattr_init(fattr); |
| 913 | |
| 914 | if (clp->rpc_ops->pathconf(server, mntfh, &pathinfo) >= 0) |
| 915 | server->namelen = pathinfo.max_namelen; |
| 916 | } |
| 917 | |
| 918 | dprintk("<-- nfs_probe_fsinfo() = 0\n"); |
| 919 | return 0; |
| 920 | |
| 921 | out_error: |
| 922 | dprintk("nfs_probe_fsinfo: error = %d\n", -error); |
| 923 | return error; |
| 924 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 925 | EXPORT_SYMBOL_GPL(nfs_probe_fsinfo); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 926 | |
| 927 | /* |
| 928 | * Copy useful information when duplicating a server record |
| 929 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 930 | void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 931 | { |
| 932 | target->flags = source->flags; |
Chuck Lever | 356e76b | 2010-04-22 15:35:56 -0400 | [diff] [blame] | 933 | target->rsize = source->rsize; |
| 934 | target->wsize = source->wsize; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 935 | target->acregmin = source->acregmin; |
| 936 | target->acregmax = source->acregmax; |
| 937 | target->acdirmin = source->acdirmin; |
| 938 | target->acdirmax = source->acdirmax; |
| 939 | target->caps = source->caps; |
David Howells | 2df5480 | 2009-09-23 14:36:39 -0400 | [diff] [blame] | 940 | target->options = source->options; |
Weston Andros Adamson | 0f5f49b | 2013-10-18 15:15:17 -0400 | [diff] [blame] | 941 | target->auth_info = source->auth_info; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 942 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 943 | EXPORT_SYMBOL_GPL(nfs_server_copy_userdata); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 944 | |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 945 | void nfs_server_insert_lists(struct nfs_server *server) |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 946 | { |
| 947 | struct nfs_client *clp = server->nfs_client; |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 948 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 949 | |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 950 | spin_lock(&nn->nfs_client_lock); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 951 | list_add_tail_rcu(&server->client_link, &clp->cl_superblocks); |
Stanislav Kinsbursky | c25d32b | 2012-01-23 17:26:14 +0000 | [diff] [blame] | 952 | list_add_tail(&server->master_link, &nn->nfs_volume_list); |
Andy Adamson | d3b4c9d | 2011-03-01 01:34:10 +0000 | [diff] [blame] | 953 | clear_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 954 | spin_unlock(&nn->nfs_client_lock); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 955 | |
| 956 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 957 | EXPORT_SYMBOL_GPL(nfs_server_insert_lists); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 958 | |
Chuck Lever | 32e62b7 | 2013-10-17 14:12:28 -0400 | [diff] [blame] | 959 | void nfs_server_remove_lists(struct nfs_server *server) |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 960 | { |
Andy Adamson | d3b4c9d | 2011-03-01 01:34:10 +0000 | [diff] [blame] | 961 | struct nfs_client *clp = server->nfs_client; |
Trond Myklebust | 4c03ae4 | 2012-02-07 00:05:11 -0500 | [diff] [blame] | 962 | struct nfs_net *nn; |
Andy Adamson | d3b4c9d | 2011-03-01 01:34:10 +0000 | [diff] [blame] | 963 | |
Trond Myklebust | 4c03ae4 | 2012-02-07 00:05:11 -0500 | [diff] [blame] | 964 | if (clp == NULL) |
| 965 | return; |
Chuck Lever | 73ea666 | 2012-05-21 22:44:50 -0400 | [diff] [blame] | 966 | nn = net_generic(clp->cl_net, nfs_net_id); |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 967 | spin_lock(&nn->nfs_client_lock); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 968 | list_del_rcu(&server->client_link); |
Trond Myklebust | 4c03ae4 | 2012-02-07 00:05:11 -0500 | [diff] [blame] | 969 | if (list_empty(&clp->cl_superblocks)) |
Andy Adamson | d3b4c9d | 2011-03-01 01:34:10 +0000 | [diff] [blame] | 970 | set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 971 | list_del(&server->master_link); |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 972 | spin_unlock(&nn->nfs_client_lock); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 973 | |
| 974 | synchronize_rcu(); |
| 975 | } |
Chuck Lever | 32e62b7 | 2013-10-17 14:12:28 -0400 | [diff] [blame] | 976 | EXPORT_SYMBOL_GPL(nfs_server_remove_lists); |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 977 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 978 | /* |
| 979 | * Allocate and initialise a server record |
| 980 | */ |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 981 | struct nfs_server *nfs_alloc_server(void) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 982 | { |
| 983 | struct nfs_server *server; |
| 984 | |
| 985 | server = kzalloc(sizeof(struct nfs_server), GFP_KERNEL); |
| 986 | if (!server) |
| 987 | return NULL; |
| 988 | |
| 989 | server->client = server->client_acl = ERR_PTR(-EINVAL); |
| 990 | |
| 991 | /* Zero out the NFS state stuff */ |
| 992 | INIT_LIST_HEAD(&server->client_link); |
| 993 | INIT_LIST_HEAD(&server->master_link); |
Chuck Lever | d3978bb | 2010-12-24 01:33:04 +0000 | [diff] [blame] | 994 | INIT_LIST_HEAD(&server->delegations); |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 995 | INIT_LIST_HEAD(&server->layouts); |
Chuck Lever | 0aaaf5c | 2011-12-06 16:13:48 -0500 | [diff] [blame] | 996 | INIT_LIST_HEAD(&server->state_owners_lru); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 997 | |
Steve Dickson | ef818a2 | 2007-11-08 04:05:04 -0500 | [diff] [blame] | 998 | atomic_set(&server->active, 0); |
| 999 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1000 | server->io_stats = nfs_alloc_iostats(); |
| 1001 | if (!server->io_stats) { |
| 1002 | kfree(server); |
| 1003 | return NULL; |
| 1004 | } |
| 1005 | |
Jens Axboe | 48d0764 | 2009-09-21 09:59:39 +0200 | [diff] [blame] | 1006 | if (bdi_init(&server->backing_dev_info)) { |
| 1007 | nfs_free_iostats(server->io_stats); |
| 1008 | kfree(server); |
| 1009 | return NULL; |
| 1010 | } |
| 1011 | |
Trond Myklebust | 9157c31 | 2012-01-17 22:04:24 -0500 | [diff] [blame] | 1012 | ida_init(&server->openowner_id); |
Trond Myklebust | d2d7ce2 | 2012-01-17 22:04:25 -0500 | [diff] [blame] | 1013 | ida_init(&server->lockowner_id); |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 1014 | pnfs_init_server(server); |
| 1015 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1016 | return server; |
| 1017 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1018 | EXPORT_SYMBOL_GPL(nfs_alloc_server); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1019 | |
| 1020 | /* |
| 1021 | * Free up a server record |
| 1022 | */ |
| 1023 | void nfs_free_server(struct nfs_server *server) |
| 1024 | { |
| 1025 | dprintk("--> nfs_free_server()\n"); |
| 1026 | |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 1027 | nfs_server_remove_lists(server); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1028 | |
| 1029 | if (server->destroy != NULL) |
| 1030 | server->destroy(server); |
Trond Myklebust | 5cef338 | 2007-12-11 22:01:56 -0500 | [diff] [blame] | 1031 | |
| 1032 | if (!IS_ERR(server->client_acl)) |
| 1033 | rpc_shutdown_client(server->client_acl); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1034 | if (!IS_ERR(server->client)) |
| 1035 | rpc_shutdown_client(server->client); |
| 1036 | |
| 1037 | nfs_put_client(server->nfs_client); |
| 1038 | |
Trond Myklebust | d2d7ce2 | 2012-01-17 22:04:25 -0500 | [diff] [blame] | 1039 | ida_destroy(&server->lockowner_id); |
Trond Myklebust | 9157c31 | 2012-01-17 22:04:24 -0500 | [diff] [blame] | 1040 | ida_destroy(&server->openowner_id); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1041 | nfs_free_iostats(server->io_stats); |
Peter Zijlstra | e0bf68d | 2007-10-16 23:25:46 -0700 | [diff] [blame] | 1042 | bdi_destroy(&server->backing_dev_info); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1043 | kfree(server); |
| 1044 | nfs_release_automount_timer(); |
| 1045 | dprintk("<-- nfs_free_server()\n"); |
| 1046 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1047 | EXPORT_SYMBOL_GPL(nfs_free_server); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1048 | |
| 1049 | /* |
| 1050 | * Create a version 2 or 3 volume record |
| 1051 | * - keyed on server and FSID |
| 1052 | */ |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 1053 | struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info, |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 1054 | struct nfs_subversion *nfs_mod) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1055 | { |
| 1056 | struct nfs_server *server; |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1057 | struct nfs_fattr *fattr; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1058 | int error; |
| 1059 | |
| 1060 | server = nfs_alloc_server(); |
| 1061 | if (!server) |
| 1062 | return ERR_PTR(-ENOMEM); |
| 1063 | |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1064 | error = -ENOMEM; |
| 1065 | fattr = nfs_alloc_fattr(); |
| 1066 | if (fattr == NULL) |
| 1067 | goto error; |
| 1068 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1069 | /* Get a client representation */ |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 1070 | error = nfs_init_server(server, mount_info->parsed, nfs_mod); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1071 | if (error < 0) |
| 1072 | goto error; |
| 1073 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1074 | /* Probe the root fh to retrieve its FSID */ |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 1075 | error = nfs_probe_fsinfo(server, mount_info->mntfh, fattr); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1076 | if (error < 0) |
| 1077 | goto error; |
Trond Myklebust | 54af3bb | 2007-09-28 12:27:41 -0400 | [diff] [blame] | 1078 | if (server->nfs_client->rpc_ops->version == 3) { |
| 1079 | if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN) |
| 1080 | server->namelen = NFS3_MAXNAMLEN; |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 1081 | if (!(mount_info->parsed->flags & NFS_MOUNT_NORDIRPLUS)) |
Trond Myklebust | 54af3bb | 2007-09-28 12:27:41 -0400 | [diff] [blame] | 1082 | server->caps |= NFS_CAP_READDIRPLUS; |
| 1083 | } else { |
| 1084 | if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN) |
| 1085 | server->namelen = NFS2_MAXNAMLEN; |
| 1086 | } |
| 1087 | |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1088 | if (!(fattr->valid & NFS_ATTR_FATTR)) { |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 1089 | error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh, fattr, NULL); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1090 | if (error < 0) { |
| 1091 | dprintk("nfs_create_server: getattr error = %d\n", -error); |
| 1092 | goto error; |
| 1093 | } |
| 1094 | } |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1095 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1096 | |
David Howells | 6daabf1 | 2006-08-24 15:44:16 -0400 | [diff] [blame] | 1097 | dprintk("Server FSID: %llx:%llx\n", |
| 1098 | (unsigned long long) server->fsid.major, |
| 1099 | (unsigned long long) server->fsid.minor); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1100 | |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 1101 | nfs_server_insert_lists(server); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1102 | server->mount_time = jiffies; |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1103 | nfs_free_fattr(fattr); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1104 | return server; |
| 1105 | |
| 1106 | error: |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1107 | nfs_free_fattr(fattr); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1108 | nfs_free_server(server); |
| 1109 | return ERR_PTR(error); |
| 1110 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1111 | EXPORT_SYMBOL_GPL(nfs_create_server); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1112 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1113 | /* |
| 1114 | * Clone an NFS2, NFS3 or NFS4 server record |
| 1115 | */ |
| 1116 | struct nfs_server *nfs_clone_server(struct nfs_server *source, |
| 1117 | struct nfs_fh *fh, |
Bryan Schumaker | 7e6eb68 | 2012-04-27 13:27:42 -0400 | [diff] [blame] | 1118 | struct nfs_fattr *fattr, |
| 1119 | rpc_authflavor_t flavor) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1120 | { |
| 1121 | struct nfs_server *server; |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1122 | struct nfs_fattr *fattr_fsinfo; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1123 | int error; |
| 1124 | |
| 1125 | dprintk("--> nfs_clone_server(,%llx:%llx,)\n", |
David Howells | 6daabf1 | 2006-08-24 15:44:16 -0400 | [diff] [blame] | 1126 | (unsigned long long) fattr->fsid.major, |
| 1127 | (unsigned long long) fattr->fsid.minor); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1128 | |
| 1129 | server = nfs_alloc_server(); |
| 1130 | if (!server) |
| 1131 | return ERR_PTR(-ENOMEM); |
| 1132 | |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1133 | error = -ENOMEM; |
| 1134 | fattr_fsinfo = nfs_alloc_fattr(); |
| 1135 | if (fattr_fsinfo == NULL) |
| 1136 | goto out_free_server; |
| 1137 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1138 | /* Copy data from the source */ |
| 1139 | server->nfs_client = source->nfs_client; |
Chuck Lever | 0aaaf5c | 2011-12-06 16:13:48 -0500 | [diff] [blame] | 1140 | server->destroy = source->destroy; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1141 | atomic_inc(&server->nfs_client->cl_count); |
| 1142 | nfs_server_copy_userdata(server, source); |
| 1143 | |
| 1144 | server->fsid = fattr->fsid; |
| 1145 | |
Trond Myklebust | 3317023 | 2007-12-20 16:03:59 -0500 | [diff] [blame] | 1146 | error = nfs_init_server_rpcclient(server, |
| 1147 | source->client->cl_timeout, |
Bryan Schumaker | 7e6eb68 | 2012-04-27 13:27:42 -0400 | [diff] [blame] | 1148 | flavor); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1149 | if (error < 0) |
| 1150 | goto out_free_server; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1151 | |
| 1152 | /* probe the filesystem info for this server filesystem */ |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1153 | error = nfs_probe_fsinfo(server, fh, fattr_fsinfo); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1154 | if (error < 0) |
| 1155 | goto out_free_server; |
| 1156 | |
Trond Myklebust | 54af3bb | 2007-09-28 12:27:41 -0400 | [diff] [blame] | 1157 | if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN) |
| 1158 | server->namelen = NFS4_MAXNAMLEN; |
| 1159 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1160 | dprintk("Cloned FSID: %llx:%llx\n", |
David Howells | 6daabf1 | 2006-08-24 15:44:16 -0400 | [diff] [blame] | 1161 | (unsigned long long) server->fsid.major, |
| 1162 | (unsigned long long) server->fsid.minor); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1163 | |
| 1164 | error = nfs_start_lockd(server); |
| 1165 | if (error < 0) |
| 1166 | goto out_free_server; |
| 1167 | |
Chuck Lever | fca5238 | 2010-12-24 01:32:32 +0000 | [diff] [blame] | 1168 | nfs_server_insert_lists(server); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1169 | server->mount_time = jiffies; |
| 1170 | |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1171 | nfs_free_fattr(fattr_fsinfo); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1172 | dprintk("<-- nfs_clone_server() = %p\n", server); |
| 1173 | return server; |
| 1174 | |
| 1175 | out_free_server: |
Trond Myklebust | fbca779 | 2010-04-16 16:22:46 -0400 | [diff] [blame] | 1176 | nfs_free_fattr(fattr_fsinfo); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1177 | nfs_free_server(server); |
| 1178 | dprintk("<-- nfs_clone_server() = error %d\n", error); |
| 1179 | return ERR_PTR(error); |
| 1180 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1181 | EXPORT_SYMBOL_GPL(nfs_clone_server); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1182 | |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1183 | void nfs_clients_init(struct net *net) |
| 1184 | { |
| 1185 | struct nfs_net *nn = net_generic(net, nfs_net_id); |
| 1186 | |
| 1187 | INIT_LIST_HEAD(&nn->nfs_client_list); |
Stanislav Kinsbursky | c25d32b | 2012-01-23 17:26:14 +0000 | [diff] [blame] | 1188 | INIT_LIST_HEAD(&nn->nfs_volume_list); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1189 | #if IS_ENABLED(CONFIG_NFS_V4) |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 1190 | idr_init(&nn->cb_ident_idr); |
| 1191 | #endif |
Trond Myklebust | 4c03ae4 | 2012-02-07 00:05:11 -0500 | [diff] [blame] | 1192 | spin_lock_init(&nn->nfs_client_lock); |
Chuck Lever | f092075 | 2012-05-21 22:45:41 -0400 | [diff] [blame] | 1193 | nn->boot_time = CURRENT_TIME; |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1194 | } |
| 1195 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1196 | #ifdef CONFIG_PROC_FS |
| 1197 | static struct proc_dir_entry *proc_fs_nfs; |
| 1198 | |
| 1199 | static int nfs_server_list_open(struct inode *inode, struct file *file); |
| 1200 | static void *nfs_server_list_start(struct seq_file *p, loff_t *pos); |
| 1201 | static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos); |
| 1202 | static void nfs_server_list_stop(struct seq_file *p, void *v); |
| 1203 | static int nfs_server_list_show(struct seq_file *m, void *v); |
| 1204 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 1205 | static const struct seq_operations nfs_server_list_ops = { |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1206 | .start = nfs_server_list_start, |
| 1207 | .next = nfs_server_list_next, |
| 1208 | .stop = nfs_server_list_stop, |
| 1209 | .show = nfs_server_list_show, |
| 1210 | }; |
| 1211 | |
Arjan van de Ven | 00977a5 | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 1212 | static const struct file_operations nfs_server_list_fops = { |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1213 | .open = nfs_server_list_open, |
| 1214 | .read = seq_read, |
| 1215 | .llseek = seq_lseek, |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1216 | .release = seq_release_net, |
Denis V. Lunev | 34b3723 | 2008-04-29 01:02:07 -0700 | [diff] [blame] | 1217 | .owner = THIS_MODULE, |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1218 | }; |
| 1219 | |
| 1220 | static int nfs_volume_list_open(struct inode *inode, struct file *file); |
| 1221 | static void *nfs_volume_list_start(struct seq_file *p, loff_t *pos); |
| 1222 | static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos); |
| 1223 | static void nfs_volume_list_stop(struct seq_file *p, void *v); |
| 1224 | static int nfs_volume_list_show(struct seq_file *m, void *v); |
| 1225 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 1226 | static const struct seq_operations nfs_volume_list_ops = { |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1227 | .start = nfs_volume_list_start, |
| 1228 | .next = nfs_volume_list_next, |
| 1229 | .stop = nfs_volume_list_stop, |
| 1230 | .show = nfs_volume_list_show, |
| 1231 | }; |
| 1232 | |
Arjan van de Ven | 00977a5 | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 1233 | static const struct file_operations nfs_volume_list_fops = { |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1234 | .open = nfs_volume_list_open, |
| 1235 | .read = seq_read, |
| 1236 | .llseek = seq_lseek, |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1237 | .release = seq_release_net, |
Denis V. Lunev | 34b3723 | 2008-04-29 01:02:07 -0700 | [diff] [blame] | 1238 | .owner = THIS_MODULE, |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1239 | }; |
| 1240 | |
| 1241 | /* |
| 1242 | * open "/proc/fs/nfsfs/servers" which provides a summary of servers with which |
| 1243 | * we're dealing |
| 1244 | */ |
| 1245 | static int nfs_server_list_open(struct inode *inode, struct file *file) |
| 1246 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1247 | return seq_open_net(inode, file, &nfs_server_list_ops, |
| 1248 | sizeof(struct seq_net_private)); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1249 | } |
| 1250 | |
| 1251 | /* |
| 1252 | * set up the iterator to start reading from the server list and return the first item |
| 1253 | */ |
| 1254 | static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) |
Jeff Layton | 8d11620 | 2014-09-10 09:04:27 -0400 | [diff] [blame] | 1255 | __acquires(&nn->nfs_client_lock) |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1256 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1257 | struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id); |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1258 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1259 | /* lock the list against modification */ |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 1260 | spin_lock(&nn->nfs_client_lock); |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1261 | return seq_list_start_head(&nn->nfs_client_list, *_pos); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | /* |
| 1265 | * move to next server |
| 1266 | */ |
| 1267 | static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos) |
| 1268 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1269 | struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id); |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1270 | |
| 1271 | return seq_list_next(v, &nn->nfs_client_list, pos); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1272 | } |
| 1273 | |
| 1274 | /* |
| 1275 | * clean up after reading from the transports list |
| 1276 | */ |
| 1277 | static void nfs_server_list_stop(struct seq_file *p, void *v) |
Jeff Layton | 8d11620 | 2014-09-10 09:04:27 -0400 | [diff] [blame] | 1278 | __releases(&nn->nfs_client_lock) |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1279 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1280 | struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id); |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 1281 | |
| 1282 | spin_unlock(&nn->nfs_client_lock); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1283 | } |
| 1284 | |
| 1285 | /* |
| 1286 | * display a header line followed by a load of call lines |
| 1287 | */ |
| 1288 | static int nfs_server_list_show(struct seq_file *m, void *v) |
| 1289 | { |
| 1290 | struct nfs_client *clp; |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1291 | struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1292 | |
| 1293 | /* display header on line 1 */ |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1294 | if (v == &nn->nfs_client_list) { |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1295 | seq_puts(m, "NV SERVER PORT USE HOSTNAME\n"); |
| 1296 | return 0; |
| 1297 | } |
| 1298 | |
| 1299 | /* display one transport per line on subsequent lines */ |
| 1300 | clp = list_entry(v, struct nfs_client, cl_share_link); |
| 1301 | |
Malahal Naineni | 940aab4 | 2011-09-20 17:27:14 -0700 | [diff] [blame] | 1302 | /* Check if the client is initialized */ |
| 1303 | if (clp->cl_cons_state != NFS_CS_READY) |
| 1304 | return 0; |
| 1305 | |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 1306 | rcu_read_lock(); |
Chuck Lever | 5d8515c | 2007-12-10 14:57:16 -0500 | [diff] [blame] | 1307 | seq_printf(m, "v%u %s %s %3d %s\n", |
Trond Myklebust | 40c55319 | 2007-12-14 14:56:07 -0500 | [diff] [blame] | 1308 | clp->rpc_ops->version, |
Chuck Lever | 5d8515c | 2007-12-10 14:57:16 -0500 | [diff] [blame] | 1309 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), |
| 1310 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT), |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1311 | atomic_read(&clp->cl_count), |
| 1312 | clp->cl_hostname); |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 1313 | rcu_read_unlock(); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1314 | |
| 1315 | return 0; |
| 1316 | } |
| 1317 | |
| 1318 | /* |
| 1319 | * open "/proc/fs/nfsfs/volumes" which provides a summary of extant volumes |
| 1320 | */ |
| 1321 | static int nfs_volume_list_open(struct inode *inode, struct file *file) |
| 1322 | { |
Fabian Frederick | 2f3169f | 2014-09-24 18:56:11 +0200 | [diff] [blame] | 1323 | return seq_open_net(inode, file, &nfs_volume_list_ops, |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1324 | sizeof(struct seq_net_private)); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1325 | } |
| 1326 | |
| 1327 | /* |
| 1328 | * set up the iterator to start reading from the volume list and return the first item |
| 1329 | */ |
| 1330 | static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) |
Jeff Layton | 8d11620 | 2014-09-10 09:04:27 -0400 | [diff] [blame] | 1331 | __acquires(&nn->nfs_client_lock) |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1332 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1333 | struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id); |
Stanislav Kinsbursky | c25d32b | 2012-01-23 17:26:14 +0000 | [diff] [blame] | 1334 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1335 | /* lock the list against modification */ |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 1336 | spin_lock(&nn->nfs_client_lock); |
Stanislav Kinsbursky | c25d32b | 2012-01-23 17:26:14 +0000 | [diff] [blame] | 1337 | return seq_list_start_head(&nn->nfs_volume_list, *_pos); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1338 | } |
| 1339 | |
| 1340 | /* |
| 1341 | * move to next volume |
| 1342 | */ |
| 1343 | static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos) |
| 1344 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1345 | struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id); |
Stanislav Kinsbursky | c25d32b | 2012-01-23 17:26:14 +0000 | [diff] [blame] | 1346 | |
| 1347 | return seq_list_next(v, &nn->nfs_volume_list, pos); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1348 | } |
| 1349 | |
| 1350 | /* |
| 1351 | * clean up after reading from the transports list |
| 1352 | */ |
| 1353 | static void nfs_volume_list_stop(struct seq_file *p, void *v) |
Jeff Layton | 8d11620 | 2014-09-10 09:04:27 -0400 | [diff] [blame] | 1354 | __releases(&nn->nfs_client_lock) |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1355 | { |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1356 | struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id); |
Stanislav Kinsbursky | dc03085 | 2012-01-23 17:26:31 +0000 | [diff] [blame] | 1357 | |
| 1358 | spin_unlock(&nn->nfs_client_lock); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1359 | } |
| 1360 | |
| 1361 | /* |
| 1362 | * display a header line followed by a load of call lines |
| 1363 | */ |
| 1364 | static int nfs_volume_list_show(struct seq_file *m, void *v) |
| 1365 | { |
| 1366 | struct nfs_server *server; |
| 1367 | struct nfs_client *clp; |
| 1368 | char dev[8], fsid[17]; |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1369 | struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1370 | |
| 1371 | /* display header on line 1 */ |
Stanislav Kinsbursky | c25d32b | 2012-01-23 17:26:14 +0000 | [diff] [blame] | 1372 | if (v == &nn->nfs_volume_list) { |
David Howells | 5d1acff | 2009-04-03 16:42:47 +0100 | [diff] [blame] | 1373 | seq_puts(m, "NV SERVER PORT DEV FSID FSC\n"); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1374 | return 0; |
| 1375 | } |
| 1376 | /* display one transport per line on subsequent lines */ |
| 1377 | server = list_entry(v, struct nfs_server, master_link); |
| 1378 | clp = server->nfs_client; |
| 1379 | |
| 1380 | snprintf(dev, 8, "%u:%u", |
| 1381 | MAJOR(server->s_dev), MINOR(server->s_dev)); |
| 1382 | |
| 1383 | snprintf(fsid, 17, "%llx:%llx", |
David Howells | 6daabf1 | 2006-08-24 15:44:16 -0400 | [diff] [blame] | 1384 | (unsigned long long) server->fsid.major, |
| 1385 | (unsigned long long) server->fsid.minor); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1386 | |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 1387 | rcu_read_lock(); |
David Howells | 5d1acff | 2009-04-03 16:42:47 +0100 | [diff] [blame] | 1388 | seq_printf(m, "v%u %s %s %-7s %-17s %s\n", |
Trond Myklebust | 40c55319 | 2007-12-14 14:56:07 -0500 | [diff] [blame] | 1389 | clp->rpc_ops->version, |
Chuck Lever | 5d8515c | 2007-12-10 14:57:16 -0500 | [diff] [blame] | 1390 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), |
| 1391 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT), |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1392 | dev, |
David Howells | 5d1acff | 2009-04-03 16:42:47 +0100 | [diff] [blame] | 1393 | fsid, |
| 1394 | nfs_server_fscache_state(server)); |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 1395 | rcu_read_unlock(); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1396 | |
| 1397 | return 0; |
| 1398 | } |
| 1399 | |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1400 | int nfs_fs_proc_net_init(struct net *net) |
| 1401 | { |
| 1402 | struct nfs_net *nn = net_generic(net, nfs_net_id); |
| 1403 | struct proc_dir_entry *p; |
| 1404 | |
| 1405 | nn->proc_nfsfs = proc_net_mkdir(net, "nfsfs", net->proc_net); |
| 1406 | if (!nn->proc_nfsfs) |
| 1407 | goto error_0; |
| 1408 | |
| 1409 | /* a file of servers with which we're dealing */ |
| 1410 | p = proc_create("servers", S_IFREG|S_IRUGO, |
| 1411 | nn->proc_nfsfs, &nfs_server_list_fops); |
| 1412 | if (!p) |
| 1413 | goto error_1; |
| 1414 | |
| 1415 | /* a file of volumes that we have mounted */ |
| 1416 | p = proc_create("volumes", S_IFREG|S_IRUGO, |
| 1417 | nn->proc_nfsfs, &nfs_volume_list_fops); |
| 1418 | if (!p) |
Cong Wang | 21e8100 | 2014-09-08 16:17:55 -0700 | [diff] [blame] | 1419 | goto error_1; |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1420 | return 0; |
| 1421 | |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1422 | error_1: |
Cong Wang | 21e8100 | 2014-09-08 16:17:55 -0700 | [diff] [blame] | 1423 | remove_proc_subtree("nfsfs", net->proc_net); |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1424 | error_0: |
| 1425 | return -ENOMEM; |
| 1426 | } |
| 1427 | |
| 1428 | void nfs_fs_proc_net_exit(struct net *net) |
| 1429 | { |
Cong Wang | 21e8100 | 2014-09-08 16:17:55 -0700 | [diff] [blame] | 1430 | remove_proc_subtree("nfsfs", net->proc_net); |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1431 | } |
| 1432 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1433 | /* |
| 1434 | * initialise the /proc/fs/nfsfs/ directory |
| 1435 | */ |
| 1436 | int __init nfs_fs_proc_init(void) |
| 1437 | { |
| 1438 | struct proc_dir_entry *p; |
| 1439 | |
Alexey Dobriyan | 36a5aeb | 2008-04-29 01:01:42 -0700 | [diff] [blame] | 1440 | proc_fs_nfs = proc_mkdir("fs/nfsfs", NULL); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1441 | if (!proc_fs_nfs) |
| 1442 | goto error_0; |
| 1443 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1444 | /* a file of servers with which we're dealing */ |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1445 | p = proc_symlink("servers", proc_fs_nfs, "../../net/nfsfs/servers"); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1446 | if (!p) |
| 1447 | goto error_1; |
| 1448 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1449 | /* a file of volumes that we have mounted */ |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 1450 | p = proc_symlink("volumes", proc_fs_nfs, "../../net/nfsfs/volumes"); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1451 | if (!p) |
| 1452 | goto error_2; |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1453 | return 0; |
| 1454 | |
| 1455 | error_2: |
| 1456 | remove_proc_entry("servers", proc_fs_nfs); |
| 1457 | error_1: |
Alexey Dobriyan | 36a5aeb | 2008-04-29 01:01:42 -0700 | [diff] [blame] | 1458 | remove_proc_entry("fs/nfsfs", NULL); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1459 | error_0: |
| 1460 | return -ENOMEM; |
| 1461 | } |
| 1462 | |
| 1463 | /* |
| 1464 | * clean up the /proc/fs/nfsfs/ directory |
| 1465 | */ |
| 1466 | void nfs_fs_proc_exit(void) |
| 1467 | { |
| 1468 | remove_proc_entry("volumes", proc_fs_nfs); |
| 1469 | remove_proc_entry("servers", proc_fs_nfs); |
Alexey Dobriyan | 36a5aeb | 2008-04-29 01:01:42 -0700 | [diff] [blame] | 1470 | remove_proc_entry("fs/nfsfs", NULL); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1471 | } |
| 1472 | |
| 1473 | #endif /* CONFIG_PROC_FS */ |