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> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 44 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #define NFSDBG_FACILITY NFSDBG_PROC |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 49 | * wrapper to handle the -EKEYEXPIRED error message. This should generally |
| 50 | * only happen if using krb5 auth and a user's TGT expires. NFSv2 doesn't |
| 51 | * support the NFSERR_JUKEBOX error code, but we handle this situation in the |
| 52 | * same way that we handle that error with NFSv3. |
| 53 | */ |
| 54 | static int |
| 55 | nfs_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) |
| 56 | { |
| 57 | int res; |
| 58 | do { |
| 59 | res = rpc_call_sync(clnt, msg, flags); |
| 60 | if (res != -EKEYEXPIRED) |
| 61 | break; |
| 62 | schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME); |
| 63 | res = -ERESTARTSYS; |
| 64 | } while (!fatal_signal_pending(current)); |
| 65 | return res; |
| 66 | } |
| 67 | |
| 68 | #define rpc_call_sync(clnt, msg, flags) nfs_rpc_wrapper(clnt, msg, flags) |
| 69 | |
| 70 | static int |
| 71 | nfs_async_handle_expired_key(struct rpc_task *task) |
| 72 | { |
| 73 | if (task->tk_status != -EKEYEXPIRED) |
| 74 | return 0; |
| 75 | task->tk_status = 0; |
| 76 | rpc_restart_call(task); |
| 77 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); |
| 78 | return 1; |
| 79 | } |
| 80 | |
| 81 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | * Bare-bones access to getattr: this is for nfs_read_super. |
| 83 | */ |
| 84 | static int |
| 85 | nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
| 86 | struct nfs_fsinfo *info) |
| 87 | { |
| 88 | struct nfs_fattr *fattr = info->fattr; |
| 89 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 90 | struct rpc_message msg = { |
| 91 | .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], |
| 92 | .rpc_argp = fhandle, |
| 93 | .rpc_resp = fattr, |
| 94 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | int status; |
| 96 | |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 97 | dprintk("%s: call getattr\n", __func__); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 98 | nfs_fattr_init(fattr); |
EG Keizer | 37ca8f5 | 2008-08-19 16:34:36 -0400 | [diff] [blame] | 99 | status = rpc_call_sync(server->client, &msg, 0); |
| 100 | /* Retry with default authentication if different */ |
| 101 | if (status && server->nfs_client->cl_rpcclient != server->client) |
| 102 | status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 103 | dprintk("%s: reply getattr: %d\n", __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | if (status) |
| 105 | return status; |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 106 | dprintk("%s: call statfs\n", __func__); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 107 | msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS]; |
| 108 | msg.rpc_resp = &fsinfo; |
EG Keizer | 37ca8f5 | 2008-08-19 16:34:36 -0400 | [diff] [blame] | 109 | status = rpc_call_sync(server->client, &msg, 0); |
| 110 | /* Retry with default authentication if different */ |
| 111 | if (status && server->nfs_client->cl_rpcclient != server->client) |
| 112 | status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 113 | dprintk("%s: reply statfs: %d\n", __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | if (status) |
| 115 | return status; |
| 116 | info->rtmax = NFS_MAXDATA; |
| 117 | info->rtpref = fsinfo.tsize; |
| 118 | info->rtmult = fsinfo.bsize; |
| 119 | info->wtmax = NFS_MAXDATA; |
| 120 | info->wtpref = fsinfo.tsize; |
| 121 | info->wtmult = fsinfo.bsize; |
| 122 | info->dtpref = fsinfo.tsize; |
| 123 | info->maxfilesize = 0x7FFFFFFF; |
| 124 | info->lease_time = 0; |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * One function for each procedure in the NFS protocol. |
| 130 | */ |
| 131 | static int |
| 132 | nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
| 133 | struct nfs_fattr *fattr) |
| 134 | { |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 135 | struct rpc_message msg = { |
| 136 | .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], |
| 137 | .rpc_argp = fhandle, |
| 138 | .rpc_resp = fattr, |
| 139 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | int status; |
| 141 | |
| 142 | dprintk("NFS call getattr\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 143 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 144 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | dprintk("NFS reply getattr: %d\n", status); |
| 146 | return status; |
| 147 | } |
| 148 | |
| 149 | static int |
| 150 | nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, |
| 151 | struct iattr *sattr) |
| 152 | { |
| 153 | struct inode *inode = dentry->d_inode; |
| 154 | struct nfs_sattrargs arg = { |
| 155 | .fh = NFS_FH(inode), |
| 156 | .sattr = sattr |
| 157 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 158 | struct rpc_message msg = { |
| 159 | .rpc_proc = &nfs_procedures[NFSPROC_SETATTR], |
| 160 | .rpc_argp = &arg, |
| 161 | .rpc_resp = fattr, |
| 162 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | int status; |
| 164 | |
Trond Myklebust | cf3fff5 | 2006-01-03 09:55:53 +0100 | [diff] [blame] | 165 | /* Mask out the non-modebit related stuff from attr->ia_mode */ |
| 166 | sattr->ia_mode &= S_IALLUGO; |
| 167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | dprintk("NFS call setattr\n"); |
Trond Myklebust | 659bfcd | 2008-06-10 19:39:41 -0400 | [diff] [blame] | 169 | if (sattr->ia_valid & ATTR_FILE) |
| 170 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 171 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 172 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 173 | if (status == 0) |
| 174 | nfs_setattr_update_inode(inode, sattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | dprintk("NFS reply setattr: %d\n", status); |
| 176 | return status; |
| 177 | } |
| 178 | |
| 179 | static int |
| 180 | nfs_proc_lookup(struct inode *dir, struct qstr *name, |
| 181 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
| 182 | { |
| 183 | struct nfs_diropargs arg = { |
| 184 | .fh = NFS_FH(dir), |
| 185 | .name = name->name, |
| 186 | .len = name->len |
| 187 | }; |
| 188 | struct nfs_diropok res = { |
| 189 | .fh = fhandle, |
| 190 | .fattr = fattr |
| 191 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 192 | struct rpc_message msg = { |
| 193 | .rpc_proc = &nfs_procedures[NFSPROC_LOOKUP], |
| 194 | .rpc_argp = &arg, |
| 195 | .rpc_resp = &res, |
| 196 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | int status; |
| 198 | |
| 199 | dprintk("NFS call lookup %s\n", name->name); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 200 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 201 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | dprintk("NFS reply lookup: %d\n", status); |
| 203 | return status; |
| 204 | } |
| 205 | |
| 206 | static int nfs_proc_readlink(struct inode *inode, struct page *page, |
| 207 | unsigned int pgbase, unsigned int pglen) |
| 208 | { |
| 209 | struct nfs_readlinkargs args = { |
| 210 | .fh = NFS_FH(inode), |
| 211 | .pgbase = pgbase, |
| 212 | .pglen = pglen, |
| 213 | .pages = &page |
| 214 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 215 | struct rpc_message msg = { |
| 216 | .rpc_proc = &nfs_procedures[NFSPROC_READLINK], |
| 217 | .rpc_argp = &args, |
| 218 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | int status; |
| 220 | |
| 221 | dprintk("NFS call readlink\n"); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 222 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | dprintk("NFS reply readlink: %d\n", status); |
| 224 | return status; |
| 225 | } |
| 226 | |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 227 | struct nfs_createdata { |
| 228 | struct nfs_createargs arg; |
| 229 | struct nfs_diropok res; |
| 230 | struct nfs_fh fhandle; |
| 231 | struct nfs_fattr fattr; |
| 232 | }; |
| 233 | |
| 234 | static struct nfs_createdata *nfs_alloc_createdata(struct inode *dir, |
| 235 | struct dentry *dentry, struct iattr *sattr) |
| 236 | { |
| 237 | struct nfs_createdata *data; |
| 238 | |
| 239 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
| 240 | |
| 241 | if (data != NULL) { |
| 242 | data->arg.fh = NFS_FH(dir); |
| 243 | data->arg.name = dentry->d_name.name; |
| 244 | data->arg.len = dentry->d_name.len; |
| 245 | data->arg.sattr = sattr; |
| 246 | nfs_fattr_init(&data->fattr); |
| 247 | data->fhandle.size = 0; |
| 248 | data->res.fh = &data->fhandle; |
| 249 | data->res.fattr = &data->fattr; |
| 250 | } |
| 251 | return data; |
| 252 | }; |
| 253 | |
| 254 | static void nfs_free_createdata(const struct nfs_createdata *data) |
| 255 | { |
| 256 | kfree(data); |
| 257 | } |
| 258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | static int |
| 260 | nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, |
Trond Myklebust | c0204fd | 2010-09-17 10:56:51 -0400 | [diff] [blame] | 261 | int flags, struct nfs_open_context *ctx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 263 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 264 | struct rpc_message msg = { |
| 265 | .rpc_proc = &nfs_procedures[NFSPROC_CREATE], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 266 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 267 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | dprintk("NFS call create %s\n", dentry->d_name.name); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 270 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 271 | if (data == NULL) |
| 272 | goto out; |
| 273 | msg.rpc_argp = &data->arg; |
| 274 | msg.rpc_resp = &data->res; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 275 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | bad2a52 | 2007-10-20 13:07:21 -0400 | [diff] [blame] | 276 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | if (status == 0) |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 278 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
| 279 | nfs_free_createdata(data); |
| 280 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | dprintk("NFS reply create: %d\n", status); |
| 282 | return status; |
| 283 | } |
| 284 | |
| 285 | /* |
| 286 | * In NFSv2, mknod is grafted onto the create call. |
| 287 | */ |
| 288 | static int |
| 289 | nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, |
| 290 | dev_t rdev) |
| 291 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 292 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 293 | struct rpc_message msg = { |
| 294 | .rpc_proc = &nfs_procedures[NFSPROC_CREATE], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 295 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 296 | umode_t mode; |
| 297 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
| 299 | dprintk("NFS call mknod %s\n", dentry->d_name.name); |
| 300 | |
| 301 | mode = sattr->ia_mode; |
| 302 | if (S_ISFIFO(mode)) { |
| 303 | sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; |
| 304 | sattr->ia_valid &= ~ATTR_SIZE; |
| 305 | } else if (S_ISCHR(mode) || S_ISBLK(mode)) { |
| 306 | sattr->ia_valid |= ATTR_SIZE; |
| 307 | sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ |
| 308 | } |
| 309 | |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 310 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 311 | if (data == NULL) |
| 312 | goto out; |
| 313 | msg.rpc_argp = &data->arg; |
| 314 | msg.rpc_resp = &data->res; |
| 315 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 316 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 317 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
| 319 | if (status == -EINVAL && S_ISFIFO(mode)) { |
| 320 | sattr->ia_mode = mode; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 321 | nfs_fattr_init(data->res.fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 322 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | } |
| 324 | if (status == 0) |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 325 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
| 326 | nfs_free_createdata(data); |
| 327 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | dprintk("NFS reply mknod: %d\n", status); |
| 329 | return status; |
| 330 | } |
| 331 | |
| 332 | static int |
| 333 | nfs_proc_remove(struct inode *dir, struct qstr *name) |
| 334 | { |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 335 | struct nfs_removeargs arg = { |
| 336 | .fh = NFS_FH(dir), |
| 337 | .name.len = name->len, |
| 338 | .name.name = 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 | |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 360 | 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] | 361 | { |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 362 | if (nfs_async_handle_expired_key(task)) |
| 363 | return 0; |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 364 | nfs_mark_for_revalidate(dir); |
| 365 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | static int |
| 369 | nfs_proc_rename(struct inode *old_dir, struct qstr *old_name, |
| 370 | struct inode *new_dir, struct qstr *new_name) |
| 371 | { |
| 372 | struct nfs_renameargs arg = { |
| 373 | .fromfh = NFS_FH(old_dir), |
| 374 | .fromname = old_name->name, |
| 375 | .fromlen = old_name->len, |
| 376 | .tofh = NFS_FH(new_dir), |
| 377 | .toname = new_name->name, |
| 378 | .tolen = new_name->len |
| 379 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 380 | struct rpc_message msg = { |
| 381 | .rpc_proc = &nfs_procedures[NFSPROC_RENAME], |
| 382 | .rpc_argp = &arg, |
| 383 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | int status; |
| 385 | |
| 386 | 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] | 387 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 388 | nfs_mark_for_revalidate(old_dir); |
| 389 | nfs_mark_for_revalidate(new_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | dprintk("NFS reply rename: %d\n", status); |
| 391 | return status; |
| 392 | } |
| 393 | |
| 394 | static int |
| 395 | nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) |
| 396 | { |
| 397 | struct nfs_linkargs arg = { |
| 398 | .fromfh = NFS_FH(inode), |
| 399 | .tofh = NFS_FH(dir), |
| 400 | .toname = name->name, |
| 401 | .tolen = name->len |
| 402 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 403 | struct rpc_message msg = { |
| 404 | .rpc_proc = &nfs_procedures[NFSPROC_LINK], |
| 405 | .rpc_argp = &arg, |
| 406 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | int status; |
| 408 | |
| 409 | dprintk("NFS call link %s\n", name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 410 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Trond Myklebust | 5ba7cc4 | 2005-12-03 15:20:17 -0500 | [diff] [blame] | 411 | nfs_mark_for_revalidate(inode); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 412 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | dprintk("NFS reply link: %d\n", status); |
| 414 | return status; |
| 415 | } |
| 416 | |
| 417 | static int |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 418 | nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
| 419 | unsigned int len, struct iattr *sattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 421 | struct nfs_fh *fh; |
| 422 | struct nfs_fattr *fattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | struct nfs_symlinkargs arg = { |
| 424 | .fromfh = NFS_FH(dir), |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 425 | .fromname = dentry->d_name.name, |
| 426 | .fromlen = dentry->d_name.len, |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 427 | .pages = &page, |
| 428 | .pathlen = len, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | .sattr = sattr |
| 430 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 431 | struct rpc_message msg = { |
| 432 | .rpc_proc = &nfs_procedures[NFSPROC_SYMLINK], |
| 433 | .rpc_argp = &arg, |
| 434 | }; |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 435 | int status = -ENAMETOOLONG; |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 436 | |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 437 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
| 438 | |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 439 | if (len > NFS2_MAXPATHLEN) |
| 440 | goto out; |
| 441 | |
| 442 | fh = nfs_alloc_fhandle(); |
| 443 | fattr = nfs_alloc_fattr(); |
| 444 | status = -ENOMEM; |
| 445 | if (fh == NULL || fattr == NULL) |
| 446 | goto out; |
| 447 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 448 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 449 | nfs_mark_for_revalidate(dir); |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 450 | |
| 451 | /* |
| 452 | * V2 SYMLINK requests don't return any attributes. Setting the |
| 453 | * filehandle size to zero indicates to nfs_instantiate that it |
| 454 | * should fill in the data with a LOOKUP call on the wire. |
| 455 | */ |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 456 | if (status == 0) |
| 457 | status = nfs_instantiate(dentry, fh, fattr); |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 458 | |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 459 | nfs_free_fattr(fattr); |
| 460 | nfs_free_fhandle(fh); |
| 461 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | dprintk("NFS reply symlink: %d\n", status); |
| 463 | return status; |
| 464 | } |
| 465 | |
| 466 | static int |
| 467 | nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) |
| 468 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 469 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 470 | struct rpc_message msg = { |
| 471 | .rpc_proc = &nfs_procedures[NFSPROC_MKDIR], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 472 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 473 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 476 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 477 | if (data == NULL) |
| 478 | goto out; |
| 479 | msg.rpc_argp = &data->arg; |
| 480 | msg.rpc_resp = &data->res; |
| 481 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 482 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 483 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | if (status == 0) |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 485 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
| 486 | nfs_free_createdata(data); |
| 487 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | dprintk("NFS reply mkdir: %d\n", status); |
| 489 | return status; |
| 490 | } |
| 491 | |
| 492 | static int |
| 493 | nfs_proc_rmdir(struct inode *dir, struct qstr *name) |
| 494 | { |
| 495 | struct nfs_diropargs arg = { |
| 496 | .fh = NFS_FH(dir), |
| 497 | .name = name->name, |
| 498 | .len = name->len |
| 499 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 500 | struct rpc_message msg = { |
| 501 | .rpc_proc = &nfs_procedures[NFSPROC_RMDIR], |
| 502 | .rpc_argp = &arg, |
| 503 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | int status; |
| 505 | |
| 506 | dprintk("NFS call rmdir %s\n", name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 507 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 508 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | dprintk("NFS reply rmdir: %d\n", status); |
| 510 | return status; |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | * The READDIR implementation is somewhat hackish - we pass a temporary |
| 515 | * buffer to the encode function, which installs it in the receive |
| 516 | * the receive iovec. The decode function just parses the reply to make |
| 517 | * sure it is syntactically correct; the entries itself are decoded |
| 518 | * from nfs_readdir by calling the decode_entry function directly. |
| 519 | */ |
| 520 | static int |
| 521 | nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, |
| 522 | u64 cookie, struct page *page, unsigned int count, int plus) |
| 523 | { |
| 524 | struct inode *dir = dentry->d_inode; |
| 525 | struct nfs_readdirargs arg = { |
| 526 | .fh = NFS_FH(dir), |
| 527 | .cookie = cookie, |
| 528 | .count = count, |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 529 | .pages = &page, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | }; |
| 531 | struct rpc_message msg = { |
| 532 | .rpc_proc = &nfs_procedures[NFSPROC_READDIR], |
| 533 | .rpc_argp = &arg, |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 534 | .rpc_cred = cred, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | }; |
| 536 | int status; |
| 537 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | dprintk("NFS call readdir %d\n", (unsigned int)cookie); |
| 539 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
| 540 | |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 541 | nfs_invalidate_atime(dir); |
| 542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | dprintk("NFS reply readdir: %d\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | return status; |
| 545 | } |
| 546 | |
| 547 | static int |
| 548 | nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, |
| 549 | struct nfs_fsstat *stat) |
| 550 | { |
| 551 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 552 | struct rpc_message msg = { |
| 553 | .rpc_proc = &nfs_procedures[NFSPROC_STATFS], |
| 554 | .rpc_argp = fhandle, |
| 555 | .rpc_resp = &fsinfo, |
| 556 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | int status; |
| 558 | |
| 559 | dprintk("NFS call statfs\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 560 | nfs_fattr_init(stat->fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 561 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | dprintk("NFS reply statfs: %d\n", status); |
| 563 | if (status) |
| 564 | goto out; |
| 565 | stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; |
| 566 | stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; |
| 567 | stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; |
| 568 | stat->tfiles = 0; |
| 569 | stat->ffiles = 0; |
| 570 | stat->afiles = 0; |
| 571 | out: |
| 572 | return status; |
| 573 | } |
| 574 | |
| 575 | static int |
| 576 | nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, |
| 577 | struct nfs_fsinfo *info) |
| 578 | { |
| 579 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 580 | struct rpc_message msg = { |
| 581 | .rpc_proc = &nfs_procedures[NFSPROC_STATFS], |
| 582 | .rpc_argp = fhandle, |
| 583 | .rpc_resp = &fsinfo, |
| 584 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | int status; |
| 586 | |
| 587 | dprintk("NFS call fsinfo\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 588 | nfs_fattr_init(info->fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 589 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | dprintk("NFS reply fsinfo: %d\n", status); |
| 591 | if (status) |
| 592 | goto out; |
| 593 | info->rtmax = NFS_MAXDATA; |
| 594 | info->rtpref = fsinfo.tsize; |
| 595 | info->rtmult = fsinfo.bsize; |
| 596 | info->wtmax = NFS_MAXDATA; |
| 597 | info->wtpref = fsinfo.tsize; |
| 598 | info->wtmult = fsinfo.bsize; |
| 599 | info->dtpref = fsinfo.tsize; |
| 600 | info->maxfilesize = 0x7FFFFFFF; |
| 601 | info->lease_time = 0; |
| 602 | out: |
| 603 | return status; |
| 604 | } |
| 605 | |
| 606 | static int |
| 607 | nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, |
| 608 | struct nfs_pathconf *info) |
| 609 | { |
| 610 | info->max_link = 0; |
| 611 | info->max_namelen = NFS2_MAXNAMLEN; |
| 612 | return 0; |
| 613 | } |
| 614 | |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 615 | 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] | 616 | { |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 617 | if (nfs_async_handle_expired_key(task)) |
| 618 | return -EAGAIN; |
| 619 | |
Trond Myklebust | 8850df9 | 2007-09-28 17:20:07 -0400 | [diff] [blame] | 620 | nfs_invalidate_atime(data->inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | if (task->tk_status >= 0) { |
| 622 | nfs_refresh_inode(data->inode, data->res.fattr); |
| 623 | /* Emulate the eof flag, which isn't normally needed in NFSv2 |
| 624 | * as it is guaranteed to always return the file attributes |
| 625 | */ |
| 626 | if (data->args.offset + data->args.count >= data->res.fattr->size) |
| 627 | data->res.eof = 1; |
| 628 | } |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 629 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | } |
| 631 | |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 632 | 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] | 633 | { |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 634 | msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | } |
| 636 | |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 637 | 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] | 638 | { |
Jeff Layton | 97cefcc | 2010-01-08 12:17:21 -0500 | [diff] [blame] | 639 | if (nfs_async_handle_expired_key(task)) |
| 640 | return -EAGAIN; |
| 641 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | if (task->tk_status >= 0) |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 643 | nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 644 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 647 | 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] | 648 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ |
| 650 | data->args.stable = NFS_FILE_SYNC; |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 651 | msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | static void |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 655 | nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | { |
| 657 | BUG(); |
| 658 | } |
| 659 | |
| 660 | static int |
| 661 | nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) |
| 662 | { |
Chuck Lever | 1093a60 | 2008-01-11 17:09:59 -0500 | [diff] [blame] | 663 | struct inode *inode = filp->f_path.dentry->d_inode; |
| 664 | |
| 665 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | } |
| 667 | |
Trond Myklebust | 2116271 | 2008-05-20 19:34:39 -0400 | [diff] [blame] | 668 | /* Helper functions for NFS lock bounds checking */ |
| 669 | #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL) |
| 670 | static int nfs_lock_check_bounds(const struct file_lock *fl) |
| 671 | { |
| 672 | __s32 start, end; |
| 673 | |
| 674 | start = (__s32)fl->fl_start; |
| 675 | if ((loff_t)start != fl->fl_start) |
| 676 | goto out_einval; |
| 677 | |
| 678 | if (fl->fl_end != OFFSET_MAX) { |
| 679 | end = (__s32)fl->fl_end; |
| 680 | if ((loff_t)end != fl->fl_end) |
| 681 | goto out_einval; |
| 682 | } else |
| 683 | end = NFS_LOCK32_OFFSET_MAX; |
| 684 | |
| 685 | if (start < 0 || start > end) |
| 686 | goto out_einval; |
| 687 | return 0; |
| 688 | out_einval: |
| 689 | return -EINVAL; |
| 690 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
David Howells | 509de81 | 2006-08-22 20:06:11 -0400 | [diff] [blame] | 692 | const struct nfs_rpc_ops nfs_v2_clientops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | .version = 2, /* protocol version */ |
| 694 | .dentry_ops = &nfs_dentry_operations, |
| 695 | .dir_inode_ops = &nfs_dir_inode_operations, |
J. Bruce Fields | 92cfc62 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 696 | .file_inode_ops = &nfs_file_inode_operations, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | .getroot = nfs_proc_get_root, |
| 698 | .getattr = nfs_proc_getattr, |
| 699 | .setattr = nfs_proc_setattr, |
| 700 | .lookup = nfs_proc_lookup, |
| 701 | .access = NULL, /* access */ |
| 702 | .readlink = nfs_proc_readlink, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | .create = nfs_proc_create, |
| 704 | .remove = nfs_proc_remove, |
| 705 | .unlink_setup = nfs_proc_unlink_setup, |
| 706 | .unlink_done = nfs_proc_unlink_done, |
| 707 | .rename = nfs_proc_rename, |
| 708 | .link = nfs_proc_link, |
| 709 | .symlink = nfs_proc_symlink, |
| 710 | .mkdir = nfs_proc_mkdir, |
| 711 | .rmdir = nfs_proc_rmdir, |
| 712 | .readdir = nfs_proc_readdir, |
| 713 | .mknod = nfs_proc_mknod, |
| 714 | .statfs = nfs_proc_statfs, |
| 715 | .fsinfo = nfs_proc_fsinfo, |
| 716 | .pathconf = nfs_proc_pathconf, |
| 717 | .decode_dirent = nfs_decode_dirent, |
| 718 | .read_setup = nfs_proc_read_setup, |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 719 | .read_done = nfs_read_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | .write_setup = nfs_proc_write_setup, |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 721 | .write_done = nfs_write_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | .commit_setup = nfs_proc_commit_setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | .lock = nfs_proc_lock, |
Trond Myklebust | 2116271 | 2008-05-20 19:34:39 -0400 | [diff] [blame] | 724 | .lock_check_bounds = nfs_lock_check_bounds, |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 725 | .close_context = nfs_close_context, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | }; |