Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/proc.c |
| 3 | * |
| 4 | * Copyright (C) 1992, 1993, 1994 Rick Sladkey |
| 5 | * |
| 6 | * OS-independent nfs remote procedure call functions |
| 7 | * |
| 8 | * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers |
| 9 | * so at last we can have decent(ish) throughput off a |
| 10 | * Sun server. |
| 11 | * |
| 12 | * Coding optimized and cleaned up by Florian La Roche. |
| 13 | * Note: Error returns are optimized for NFS_OK, which isn't translated via |
| 14 | * nfs_stat_to_errno(), but happens to be already the right return code. |
| 15 | * |
| 16 | * Also, the code currently doesn't check the size of the packet, when |
| 17 | * it decodes the packet. |
| 18 | * |
| 19 | * Feel free to fix it and mail me the diffs if it worries you. |
| 20 | * |
| 21 | * Completely rewritten to support the new RPC call interface; |
| 22 | * rewrote and moved the entire XDR stuff to xdr.c |
| 23 | * --Olaf Kirch June 1996 |
| 24 | * |
| 25 | * The code below initializes all auto variables explicitly, otherwise |
| 26 | * it will fail to work as a module (gcc generates a memset call for an |
| 27 | * incomplete struct). |
| 28 | */ |
| 29 | |
| 30 | #include <linux/types.h> |
| 31 | #include <linux/param.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/time.h> |
| 33 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/errno.h> |
| 35 | #include <linux/string.h> |
| 36 | #include <linux/in.h> |
| 37 | #include <linux/pagemap.h> |
| 38 | #include <linux/sunrpc/clnt.h> |
| 39 | #include <linux/nfs.h> |
| 40 | #include <linux/nfs2.h> |
| 41 | #include <linux/nfs_fs.h> |
| 42 | #include <linux/nfs_page.h> |
| 43 | #include <linux/lockd/bind.h> |
Jeff Layton | d310310 | 2011-12-01 22:44:39 +0100 | [diff] [blame] | 44 | #include <linux/freezer.h> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 45 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | #define NFSDBG_FACILITY NFSDBG_PROC |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 50 | * wrapper to handle the -EKEYEXPIRED error message. This should generally |
| 51 | * only happen if using krb5 auth and a user's TGT expires. NFSv2 doesn't |
| 52 | * support the NFSERR_JUKEBOX error code, but we handle this situation in the |
| 53 | * same way that we handle that error with NFSv3. |
| 54 | */ |
| 55 | static int |
| 56 | nfs_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) |
| 57 | { |
| 58 | int res; |
| 59 | do { |
| 60 | res = rpc_call_sync(clnt, msg, flags); |
| 61 | if (res != -EKEYEXPIRED) |
| 62 | break; |
Jeff Layton | d310310 | 2011-12-01 22:44:39 +0100 | [diff] [blame] | 63 | freezable_schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME); |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 64 | res = -ERESTARTSYS; |
| 65 | } while (!fatal_signal_pending(current)); |
| 66 | return res; |
| 67 | } |
| 68 | |
| 69 | #define rpc_call_sync(clnt, msg, flags) nfs_rpc_wrapper(clnt, msg, flags) |
| 70 | |
| 71 | static int |
| 72 | nfs_async_handle_expired_key(struct rpc_task *task) |
| 73 | { |
| 74 | if (task->tk_status != -EKEYEXPIRED) |
| 75 | return 0; |
| 76 | task->tk_status = 0; |
| 77 | rpc_restart_call(task); |
| 78 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); |
| 79 | return 1; |
| 80 | } |
| 81 | |
| 82 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | * Bare-bones access to getattr: this is for nfs_read_super. |
| 84 | */ |
| 85 | static int |
| 86 | nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
| 87 | struct nfs_fsinfo *info) |
| 88 | { |
| 89 | struct nfs_fattr *fattr = info->fattr; |
| 90 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 91 | struct rpc_message msg = { |
| 92 | .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], |
| 93 | .rpc_argp = fhandle, |
| 94 | .rpc_resp = fattr, |
| 95 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | int status; |
| 97 | |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 98 | dprintk("%s: call getattr\n", __func__); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 99 | nfs_fattr_init(fattr); |
EG Keizer | 37ca8f5 | 2008-08-19 16:34:36 -0400 | [diff] [blame] | 100 | status = rpc_call_sync(server->client, &msg, 0); |
| 101 | /* Retry with default authentication if different */ |
| 102 | if (status && server->nfs_client->cl_rpcclient != server->client) |
| 103 | status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 104 | dprintk("%s: reply getattr: %d\n", __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | if (status) |
| 106 | return status; |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 107 | dprintk("%s: call statfs\n", __func__); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 108 | msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS]; |
| 109 | msg.rpc_resp = &fsinfo; |
EG Keizer | 37ca8f5 | 2008-08-19 16:34:36 -0400 | [diff] [blame] | 110 | status = rpc_call_sync(server->client, &msg, 0); |
| 111 | /* Retry with default authentication if different */ |
| 112 | if (status && server->nfs_client->cl_rpcclient != server->client) |
| 113 | status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 114 | dprintk("%s: reply statfs: %d\n", __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | if (status) |
| 116 | return status; |
| 117 | info->rtmax = NFS_MAXDATA; |
| 118 | info->rtpref = fsinfo.tsize; |
| 119 | info->rtmult = fsinfo.bsize; |
| 120 | info->wtmax = NFS_MAXDATA; |
| 121 | info->wtpref = fsinfo.tsize; |
| 122 | info->wtmult = fsinfo.bsize; |
| 123 | info->dtpref = fsinfo.tsize; |
| 124 | info->maxfilesize = 0x7FFFFFFF; |
| 125 | info->lease_time = 0; |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * One function for each procedure in the NFS protocol. |
| 131 | */ |
| 132 | static int |
| 133 | nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
| 134 | struct nfs_fattr *fattr) |
| 135 | { |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 136 | struct rpc_message msg = { |
| 137 | .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], |
| 138 | .rpc_argp = fhandle, |
| 139 | .rpc_resp = fattr, |
| 140 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | int status; |
| 142 | |
| 143 | dprintk("NFS call getattr\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 144 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 145 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | dprintk("NFS reply getattr: %d\n", status); |
| 147 | return status; |
| 148 | } |
| 149 | |
| 150 | static int |
| 151 | nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, |
| 152 | struct iattr *sattr) |
| 153 | { |
| 154 | struct inode *inode = dentry->d_inode; |
| 155 | struct nfs_sattrargs arg = { |
| 156 | .fh = NFS_FH(inode), |
| 157 | .sattr = sattr |
| 158 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 159 | struct rpc_message msg = { |
| 160 | .rpc_proc = &nfs_procedures[NFSPROC_SETATTR], |
| 161 | .rpc_argp = &arg, |
| 162 | .rpc_resp = fattr, |
| 163 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | int status; |
| 165 | |
Trond Myklebust | cf3fff5 | 2006-01-03 09:55:53 +0100 | [diff] [blame] | 166 | /* Mask out the non-modebit related stuff from attr->ia_mode */ |
| 167 | sattr->ia_mode &= S_IALLUGO; |
| 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | dprintk("NFS call setattr\n"); |
Trond Myklebust | 659bfcd | 2008-06-10 19:39:41 -0400 | [diff] [blame] | 170 | if (sattr->ia_valid & ATTR_FILE) |
| 171 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 172 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 173 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 174 | if (status == 0) |
| 175 | nfs_setattr_update_inode(inode, sattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | dprintk("NFS reply setattr: %d\n", status); |
| 177 | return status; |
| 178 | } |
| 179 | |
| 180 | static int |
Bryan Schumaker | 80a16b2 | 2012-04-27 13:27:46 -0400 | [diff] [blame] | 181 | nfs_proc_lookup(struct inode *dir, struct qstr *name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
| 183 | { |
| 184 | struct nfs_diropargs arg = { |
| 185 | .fh = NFS_FH(dir), |
| 186 | .name = name->name, |
| 187 | .len = name->len |
| 188 | }; |
| 189 | struct nfs_diropok res = { |
| 190 | .fh = fhandle, |
| 191 | .fattr = fattr |
| 192 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 193 | struct rpc_message msg = { |
| 194 | .rpc_proc = &nfs_procedures[NFSPROC_LOOKUP], |
| 195 | .rpc_argp = &arg, |
| 196 | .rpc_resp = &res, |
| 197 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | int status; |
| 199 | |
| 200 | dprintk("NFS call lookup %s\n", name->name); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 201 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 202 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | dprintk("NFS reply lookup: %d\n", status); |
| 204 | return status; |
| 205 | } |
| 206 | |
| 207 | static int nfs_proc_readlink(struct inode *inode, struct page *page, |
| 208 | unsigned int pgbase, unsigned int pglen) |
| 209 | { |
| 210 | struct nfs_readlinkargs args = { |
| 211 | .fh = NFS_FH(inode), |
| 212 | .pgbase = pgbase, |
| 213 | .pglen = pglen, |
| 214 | .pages = &page |
| 215 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 216 | struct rpc_message msg = { |
| 217 | .rpc_proc = &nfs_procedures[NFSPROC_READLINK], |
| 218 | .rpc_argp = &args, |
| 219 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | int status; |
| 221 | |
| 222 | dprintk("NFS call readlink\n"); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 223 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | dprintk("NFS reply readlink: %d\n", status); |
| 225 | return status; |
| 226 | } |
| 227 | |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 228 | struct nfs_createdata { |
| 229 | struct nfs_createargs arg; |
| 230 | struct nfs_diropok res; |
| 231 | struct nfs_fh fhandle; |
| 232 | struct nfs_fattr fattr; |
| 233 | }; |
| 234 | |
| 235 | static struct nfs_createdata *nfs_alloc_createdata(struct inode *dir, |
| 236 | struct dentry *dentry, struct iattr *sattr) |
| 237 | { |
| 238 | struct nfs_createdata *data; |
| 239 | |
| 240 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
| 241 | |
| 242 | if (data != NULL) { |
| 243 | data->arg.fh = NFS_FH(dir); |
| 244 | data->arg.name = dentry->d_name.name; |
| 245 | data->arg.len = dentry->d_name.len; |
| 246 | data->arg.sattr = sattr; |
| 247 | nfs_fattr_init(&data->fattr); |
| 248 | data->fhandle.size = 0; |
| 249 | data->res.fh = &data->fhandle; |
| 250 | data->res.fattr = &data->fattr; |
| 251 | } |
| 252 | return data; |
| 253 | }; |
| 254 | |
| 255 | static void nfs_free_createdata(const struct nfs_createdata *data) |
| 256 | { |
| 257 | kfree(data); |
| 258 | } |
| 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | static int |
| 261 | nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, |
Trond Myklebust | c0204fd | 2010-09-17 10:56:51 -0400 | [diff] [blame] | 262 | int flags, struct nfs_open_context *ctx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 264 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 265 | struct rpc_message msg = { |
| 266 | .rpc_proc = &nfs_procedures[NFSPROC_CREATE], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 267 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 268 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | dprintk("NFS call create %s\n", dentry->d_name.name); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 271 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 272 | if (data == NULL) |
| 273 | goto out; |
| 274 | msg.rpc_argp = &data->arg; |
| 275 | msg.rpc_resp = &data->res; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 276 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | bad2a52 | 2007-10-20 13:07:21 -0400 | [diff] [blame] | 277 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | if (status == 0) |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 279 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
| 280 | nfs_free_createdata(data); |
| 281 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | dprintk("NFS reply create: %d\n", status); |
| 283 | return status; |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * In NFSv2, mknod is grafted onto the create call. |
| 288 | */ |
| 289 | static int |
| 290 | nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, |
| 291 | dev_t rdev) |
| 292 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 293 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 294 | struct rpc_message msg = { |
| 295 | .rpc_proc = &nfs_procedures[NFSPROC_CREATE], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 296 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 297 | umode_t mode; |
| 298 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
| 300 | dprintk("NFS call mknod %s\n", dentry->d_name.name); |
| 301 | |
| 302 | mode = sattr->ia_mode; |
| 303 | if (S_ISFIFO(mode)) { |
| 304 | sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; |
| 305 | sattr->ia_valid &= ~ATTR_SIZE; |
| 306 | } else if (S_ISCHR(mode) || S_ISBLK(mode)) { |
| 307 | sattr->ia_valid |= ATTR_SIZE; |
| 308 | sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ |
| 309 | } |
| 310 | |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 311 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 312 | if (data == NULL) |
| 313 | goto out; |
| 314 | msg.rpc_argp = &data->arg; |
| 315 | msg.rpc_resp = &data->res; |
| 316 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 317 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 318 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
| 320 | if (status == -EINVAL && S_ISFIFO(mode)) { |
| 321 | sattr->ia_mode = mode; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 322 | nfs_fattr_init(data->res.fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 323 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | } |
| 325 | if (status == 0) |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 326 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
| 327 | nfs_free_createdata(data); |
| 328 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | dprintk("NFS reply mknod: %d\n", status); |
| 330 | return status; |
| 331 | } |
| 332 | |
| 333 | static int |
| 334 | nfs_proc_remove(struct inode *dir, struct qstr *name) |
| 335 | { |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 336 | struct nfs_removeargs arg = { |
| 337 | .fh = NFS_FH(dir), |
Linus Torvalds | 26fe575 | 2012-05-10 13:14:12 -0700 | [diff] [blame] | 338 | .name = *name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | }; |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 340 | struct rpc_message msg = { |
| 341 | .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], |
| 342 | .rpc_argp = &arg, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | }; |
| 344 | int status; |
| 345 | |
| 346 | dprintk("NFS call remove %s\n", name->name); |
| 347 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 348 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
| 350 | dprintk("NFS reply remove: %d\n", status); |
| 351 | return status; |
| 352 | } |
| 353 | |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 354 | static void |
| 355 | nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
Bryan Schumaker | 34e137c | 2012-03-19 14:54:41 -0400 | [diff] [blame] | 360 | static void nfs_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
| 361 | { |
| 362 | rpc_call_start(task); |
| 363 | } |
| 364 | |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 365 | static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | { |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 367 | if (nfs_async_handle_expired_key(task)) |
| 368 | return 0; |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 369 | nfs_mark_for_revalidate(dir); |
| 370 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 373 | static void |
| 374 | nfs_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
| 375 | { |
| 376 | msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; |
| 377 | } |
| 378 | |
Bryan Schumaker | c6bfa1a | 2012-03-19 14:54:42 -0400 | [diff] [blame] | 379 | static void nfs_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
| 380 | { |
| 381 | rpc_call_start(task); |
| 382 | } |
| 383 | |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 384 | static int |
| 385 | nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, |
| 386 | struct inode *new_dir) |
| 387 | { |
| 388 | if (nfs_async_handle_expired_key(task)) |
| 389 | return 0; |
| 390 | nfs_mark_for_revalidate(old_dir); |
| 391 | nfs_mark_for_revalidate(new_dir); |
| 392 | return 1; |
| 393 | } |
| 394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | static int |
| 396 | nfs_proc_rename(struct inode *old_dir, struct qstr *old_name, |
| 397 | struct inode *new_dir, struct qstr *new_name) |
| 398 | { |
| 399 | struct nfs_renameargs arg = { |
Jeff Layton | 920769f | 2010-09-17 17:30:25 -0400 | [diff] [blame] | 400 | .old_dir = NFS_FH(old_dir), |
| 401 | .old_name = old_name, |
| 402 | .new_dir = NFS_FH(new_dir), |
| 403 | .new_name = new_name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 405 | struct rpc_message msg = { |
| 406 | .rpc_proc = &nfs_procedures[NFSPROC_RENAME], |
| 407 | .rpc_argp = &arg, |
| 408 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | int status; |
| 410 | |
| 411 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 412 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 413 | nfs_mark_for_revalidate(old_dir); |
| 414 | nfs_mark_for_revalidate(new_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | dprintk("NFS reply rename: %d\n", status); |
| 416 | return status; |
| 417 | } |
| 418 | |
| 419 | static int |
| 420 | nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
| 421 | { |
| 422 | struct nfs_linkargs arg = { |
| 423 | .fromfh = NFS_FH(inode), |
| 424 | .tofh = NFS_FH(dir), |
| 425 | .toname = name->name, |
| 426 | .tolen = name->len |
| 427 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 428 | struct rpc_message msg = { |
| 429 | .rpc_proc = &nfs_procedures[NFSPROC_LINK], |
| 430 | .rpc_argp = &arg, |
| 431 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | int status; |
| 433 | |
| 434 | dprintk("NFS call link %s\n", name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 435 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Trond Myklebust | 5ba7cc4 | 2005-12-03 15:20:17 -0500 | [diff] [blame] | 436 | nfs_mark_for_revalidate(inode); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 437 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | dprintk("NFS reply link: %d\n", status); |
| 439 | return status; |
| 440 | } |
| 441 | |
| 442 | static int |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 443 | nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
| 444 | unsigned int len, struct iattr *sattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | { |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 446 | struct nfs_fh *fh; |
| 447 | struct nfs_fattr *fattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | struct nfs_symlinkargs arg = { |
| 449 | .fromfh = NFS_FH(dir), |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 450 | .fromname = dentry->d_name.name, |
| 451 | .fromlen = dentry->d_name.len, |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 452 | .pages = &page, |
| 453 | .pathlen = len, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | .sattr = sattr |
| 455 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 456 | struct rpc_message msg = { |
| 457 | .rpc_proc = &nfs_procedures[NFSPROC_SYMLINK], |
| 458 | .rpc_argp = &arg, |
| 459 | }; |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 460 | int status = -ENAMETOOLONG; |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 461 | |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 462 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
| 463 | |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 464 | if (len > NFS2_MAXPATHLEN) |
| 465 | goto out; |
| 466 | |
| 467 | fh = nfs_alloc_fhandle(); |
| 468 | fattr = nfs_alloc_fattr(); |
| 469 | status = -ENOMEM; |
| 470 | if (fh == NULL || fattr == NULL) |
Jesper Juhl | 878215f | 2010-12-24 22:22:37 +0000 | [diff] [blame] | 471 | goto out_free; |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 472 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 473 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 474 | nfs_mark_for_revalidate(dir); |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 475 | |
| 476 | /* |
| 477 | * V2 SYMLINK requests don't return any attributes. Setting the |
| 478 | * filehandle size to zero indicates to nfs_instantiate that it |
| 479 | * should fill in the data with a LOOKUP call on the wire. |
| 480 | */ |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 481 | if (status == 0) |
| 482 | status = nfs_instantiate(dentry, fh, fattr); |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 483 | |
Jesper Juhl | 878215f | 2010-12-24 22:22:37 +0000 | [diff] [blame] | 484 | out_free: |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 485 | nfs_free_fattr(fattr); |
| 486 | nfs_free_fhandle(fh); |
| 487 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | dprintk("NFS reply symlink: %d\n", status); |
| 489 | return status; |
| 490 | } |
| 491 | |
| 492 | static int |
| 493 | nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) |
| 494 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 495 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 496 | struct rpc_message msg = { |
| 497 | .rpc_proc = &nfs_procedures[NFSPROC_MKDIR], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 498 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 499 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
| 501 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 502 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 503 | if (data == NULL) |
| 504 | goto out; |
| 505 | msg.rpc_argp = &data->arg; |
| 506 | msg.rpc_resp = &data->res; |
| 507 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 508 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 509 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | if (status == 0) |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 511 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
| 512 | nfs_free_createdata(data); |
| 513 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | dprintk("NFS reply mkdir: %d\n", status); |
| 515 | return status; |
| 516 | } |
| 517 | |
| 518 | static int |
| 519 | nfs_proc_rmdir(struct inode *dir, struct qstr *name) |
| 520 | { |
| 521 | struct nfs_diropargs arg = { |
| 522 | .fh = NFS_FH(dir), |
| 523 | .name = name->name, |
| 524 | .len = name->len |
| 525 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 526 | struct rpc_message msg = { |
| 527 | .rpc_proc = &nfs_procedures[NFSPROC_RMDIR], |
| 528 | .rpc_argp = &arg, |
| 529 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | int status; |
| 531 | |
| 532 | dprintk("NFS call rmdir %s\n", name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 533 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 534 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | dprintk("NFS reply rmdir: %d\n", status); |
| 536 | return status; |
| 537 | } |
| 538 | |
| 539 | /* |
| 540 | * The READDIR implementation is somewhat hackish - we pass a temporary |
| 541 | * buffer to the encode function, which installs it in the receive |
| 542 | * the receive iovec. The decode function just parses the reply to make |
| 543 | * sure it is syntactically correct; the entries itself are decoded |
| 544 | * from nfs_readdir by calling the decode_entry function directly. |
| 545 | */ |
| 546 | static int |
| 547 | nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, |
Bryan Schumaker | 56e4ebf | 2010-10-20 15:44:37 -0400 | [diff] [blame] | 548 | u64 cookie, struct page **pages, unsigned int count, int plus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | { |
| 550 | struct inode *dir = dentry->d_inode; |
| 551 | struct nfs_readdirargs arg = { |
| 552 | .fh = NFS_FH(dir), |
| 553 | .cookie = cookie, |
| 554 | .count = count, |
Bryan Schumaker | 56e4ebf | 2010-10-20 15:44:37 -0400 | [diff] [blame] | 555 | .pages = pages, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | }; |
| 557 | struct rpc_message msg = { |
| 558 | .rpc_proc = &nfs_procedures[NFSPROC_READDIR], |
| 559 | .rpc_argp = &arg, |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 560 | .rpc_cred = cred, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | }; |
| 562 | int status; |
| 563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | dprintk("NFS call readdir %d\n", (unsigned int)cookie); |
| 565 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
| 566 | |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 567 | nfs_invalidate_atime(dir); |
| 568 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | dprintk("NFS reply readdir: %d\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | return status; |
| 571 | } |
| 572 | |
| 573 | static int |
| 574 | nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, |
| 575 | struct nfs_fsstat *stat) |
| 576 | { |
| 577 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 578 | struct rpc_message msg = { |
| 579 | .rpc_proc = &nfs_procedures[NFSPROC_STATFS], |
| 580 | .rpc_argp = fhandle, |
| 581 | .rpc_resp = &fsinfo, |
| 582 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | int status; |
| 584 | |
| 585 | dprintk("NFS call statfs\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 586 | nfs_fattr_init(stat->fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 587 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | dprintk("NFS reply statfs: %d\n", status); |
| 589 | if (status) |
| 590 | goto out; |
| 591 | stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; |
| 592 | stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; |
| 593 | stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; |
| 594 | stat->tfiles = 0; |
| 595 | stat->ffiles = 0; |
| 596 | stat->afiles = 0; |
| 597 | out: |
| 598 | return status; |
| 599 | } |
| 600 | |
| 601 | static int |
| 602 | nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, |
| 603 | struct nfs_fsinfo *info) |
| 604 | { |
| 605 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 606 | struct rpc_message msg = { |
| 607 | .rpc_proc = &nfs_procedures[NFSPROC_STATFS], |
| 608 | .rpc_argp = fhandle, |
| 609 | .rpc_resp = &fsinfo, |
| 610 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | int status; |
| 612 | |
| 613 | dprintk("NFS call fsinfo\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 614 | nfs_fattr_init(info->fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 615 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | dprintk("NFS reply fsinfo: %d\n", status); |
| 617 | if (status) |
| 618 | goto out; |
| 619 | info->rtmax = NFS_MAXDATA; |
| 620 | info->rtpref = fsinfo.tsize; |
| 621 | info->rtmult = fsinfo.bsize; |
| 622 | info->wtmax = NFS_MAXDATA; |
| 623 | info->wtpref = fsinfo.tsize; |
| 624 | info->wtmult = fsinfo.bsize; |
| 625 | info->dtpref = fsinfo.tsize; |
| 626 | info->maxfilesize = 0x7FFFFFFF; |
| 627 | info->lease_time = 0; |
| 628 | out: |
| 629 | return status; |
| 630 | } |
| 631 | |
| 632 | static int |
| 633 | nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, |
| 634 | struct nfs_pathconf *info) |
| 635 | { |
| 636 | info->max_link = 0; |
| 637 | info->max_namelen = NFS2_MAXNAMLEN; |
| 638 | return 0; |
| 639 | } |
| 640 | |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 641 | static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | { |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 643 | struct inode *inode = data->header->inode; |
| 644 | |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 645 | if (nfs_async_handle_expired_key(task)) |
| 646 | return -EAGAIN; |
| 647 | |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 648 | nfs_invalidate_atime(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | if (task->tk_status >= 0) { |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 650 | nfs_refresh_inode(inode, data->res.fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | /* Emulate the eof flag, which isn't normally needed in NFSv2 |
| 652 | * as it is guaranteed to always return the file attributes |
| 653 | */ |
Sachin Prabhu | 64f9a83 | 2012-05-31 17:45:00 +0100 | [diff] [blame] | 654 | if (data->args.offset + data->res.count >= data->res.fattr->size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | data->res.eof = 1; |
| 656 | } |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 657 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | } |
| 659 | |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 660 | static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | { |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 662 | msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | } |
| 664 | |
Bryan Schumaker | ea7c330 | 2012-03-19 14:54:40 -0400 | [diff] [blame] | 665 | static void nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
| 666 | { |
| 667 | rpc_call_start(task); |
| 668 | } |
| 669 | |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 670 | static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | { |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 672 | struct inode *inode = data->header->inode; |
| 673 | |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 674 | if (nfs_async_handle_expired_key(task)) |
| 675 | return -EAGAIN; |
| 676 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | if (task->tk_status >= 0) |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 678 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 679 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | } |
| 681 | |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 682 | static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ |
| 685 | data->args.stable = NFS_FILE_SYNC; |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 686 | msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | } |
| 688 | |
Bryan Schumaker | c6cb80d | 2012-03-19 14:54:39 -0400 | [diff] [blame] | 689 | static void nfs_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
| 690 | { |
| 691 | rpc_call_start(task); |
| 692 | } |
| 693 | |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 694 | static void nfs_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
| 695 | { |
| 696 | BUG(); |
| 697 | } |
| 698 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | static void |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 700 | nfs_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | { |
| 702 | BUG(); |
| 703 | } |
| 704 | |
| 705 | static int |
| 706 | nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) |
| 707 | { |
Chuck Lever | 1093a60 | 2008-01-11 17:09:59 -0500 | [diff] [blame] | 708 | struct inode *inode = filp->f_path.dentry->d_inode; |
| 709 | |
| 710 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | } |
| 712 | |
Trond Myklebust | 2116271 | 2008-05-20 19:34:39 -0400 | [diff] [blame] | 713 | /* Helper functions for NFS lock bounds checking */ |
| 714 | #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL) |
| 715 | static int nfs_lock_check_bounds(const struct file_lock *fl) |
| 716 | { |
| 717 | __s32 start, end; |
| 718 | |
| 719 | start = (__s32)fl->fl_start; |
| 720 | if ((loff_t)start != fl->fl_start) |
| 721 | goto out_einval; |
| 722 | |
| 723 | if (fl->fl_end != OFFSET_MAX) { |
| 724 | end = (__s32)fl->fl_end; |
| 725 | if ((loff_t)end != fl->fl_end) |
| 726 | goto out_einval; |
| 727 | } else |
| 728 | end = NFS_LOCK32_OFFSET_MAX; |
| 729 | |
| 730 | if (start < 0 || start > end) |
| 731 | goto out_einval; |
| 732 | return 0; |
| 733 | out_einval: |
| 734 | return -EINVAL; |
| 735 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
Bryan Schumaker | 011e2a7 | 2012-06-20 15:53:43 -0400 | [diff] [blame] | 737 | static int nfs_have_delegation(struct inode *inode, fmode_t flags) |
| 738 | { |
| 739 | return 0; |
| 740 | } |
| 741 | |
Bryan Schumaker | 57ec14c | 2012-06-20 15:53:44 -0400 | [diff] [blame] | 742 | static int nfs_return_delegation(struct inode *inode) |
| 743 | { |
| 744 | nfs_wb_all(inode); |
| 745 | return 0; |
| 746 | } |
| 747 | |
David Howells | 509de81 | 2006-08-22 20:06:11 -0400 | [diff] [blame] | 748 | const struct nfs_rpc_ops nfs_v2_clientops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | .version = 2, /* protocol version */ |
| 750 | .dentry_ops = &nfs_dentry_operations, |
| 751 | .dir_inode_ops = &nfs_dir_inode_operations, |
J. Bruce Fields | 92cfc62 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 752 | .file_inode_ops = &nfs_file_inode_operations, |
Jeff Layton | 1788ea6 | 2011-11-04 13:31:21 -0400 | [diff] [blame] | 753 | .file_ops = &nfs_file_operations, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | .getroot = nfs_proc_get_root, |
Bryan Schumaker | 281cad4 | 2012-04-27 13:27:45 -0400 | [diff] [blame] | 755 | .submount = nfs_submount, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | .getattr = nfs_proc_getattr, |
| 757 | .setattr = nfs_proc_setattr, |
| 758 | .lookup = nfs_proc_lookup, |
| 759 | .access = NULL, /* access */ |
| 760 | .readlink = nfs_proc_readlink, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | .create = nfs_proc_create, |
| 762 | .remove = nfs_proc_remove, |
| 763 | .unlink_setup = nfs_proc_unlink_setup, |
Bryan Schumaker | 34e137c | 2012-03-19 14:54:41 -0400 | [diff] [blame] | 764 | .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | .unlink_done = nfs_proc_unlink_done, |
| 766 | .rename = nfs_proc_rename, |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 767 | .rename_setup = nfs_proc_rename_setup, |
Bryan Schumaker | c6bfa1a | 2012-03-19 14:54:42 -0400 | [diff] [blame] | 768 | .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 769 | .rename_done = nfs_proc_rename_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | .link = nfs_proc_link, |
| 771 | .symlink = nfs_proc_symlink, |
| 772 | .mkdir = nfs_proc_mkdir, |
| 773 | .rmdir = nfs_proc_rmdir, |
| 774 | .readdir = nfs_proc_readdir, |
| 775 | .mknod = nfs_proc_mknod, |
| 776 | .statfs = nfs_proc_statfs, |
| 777 | .fsinfo = nfs_proc_fsinfo, |
| 778 | .pathconf = nfs_proc_pathconf, |
Chuck Lever | f796f8b | 2010-12-14 14:55:10 +0000 | [diff] [blame] | 779 | .decode_dirent = nfs2_decode_dirent, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | .read_setup = nfs_proc_read_setup, |
Bryan Schumaker | ea7c330 | 2012-03-19 14:54:40 -0400 | [diff] [blame] | 781 | .read_rpc_prepare = nfs_proc_read_rpc_prepare, |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 782 | .read_done = nfs_read_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | .write_setup = nfs_proc_write_setup, |
Bryan Schumaker | c6cb80d | 2012-03-19 14:54:39 -0400 | [diff] [blame] | 784 | .write_rpc_prepare = nfs_proc_write_rpc_prepare, |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 785 | .write_done = nfs_write_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | .commit_setup = nfs_proc_commit_setup, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 787 | .commit_rpc_prepare = nfs_proc_commit_rpc_prepare, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | .lock = nfs_proc_lock, |
Trond Myklebust | 2116271 | 2008-05-20 19:34:39 -0400 | [diff] [blame] | 789 | .lock_check_bounds = nfs_lock_check_bounds, |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 790 | .close_context = nfs_close_context, |
Bryan Schumaker | 011e2a7 | 2012-06-20 15:53:43 -0400 | [diff] [blame] | 791 | .have_delegation = nfs_have_delegation, |
Bryan Schumaker | 57ec14c | 2012-06-20 15:53:44 -0400 | [diff] [blame] | 792 | .return_delegation = nfs_return_delegation, |
Bryan Schumaker | 6663ee7 | 2012-06-20 15:53:46 -0400 | [diff] [blame^] | 793 | .alloc_client = nfs_alloc_client, |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 794 | .init_client = nfs_init_client, |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 795 | .free_client = nfs_free_client, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | }; |