blob: 549dbce714a4bde33c55386ed18357ddf911eab4 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/nfs/nfs3proc.c
3 *
4 * Client-side NFSv3 procedures stubs.
5 *
6 * Copyright (C) 1997, Olaf Kirch
7 */
8
9#include <linux/mm.h>
10#include <linux/utsname.h>
11#include <linux/errno.h>
12#include <linux/string.h>
13#include <linux/sunrpc/clnt.h>
14#include <linux/nfs.h>
15#include <linux/nfs3.h>
16#include <linux/nfs_fs.h>
17#include <linux/nfs_page.h>
18#include <linux/lockd/bind.h>
Andreas Gruenbacherb7fa0552005-06-22 17:16:27 +000019#include <linux/nfs_mount.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
Chuck Lever006ea732006-03-20 13:44:14 -050021#include "iostat.h"
David Howellsf7b422b2006-06-09 09:34:33 -040022#include "internal.h"
Chuck Lever006ea732006-03-20 13:44:14 -050023
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#define NFSDBG_FACILITY NFSDBG_PROC
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026/* A wrapper to handle the EJUKEBOX error message */
27static int
28nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
29{
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 int res;
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 do {
32 res = rpc_call_sync(clnt, msg, flags);
33 if (res != -EJUKEBOX)
34 break;
Matthew Wilcox150030b2007-12-06 16:24:39 -050035 schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 res = -ERESTARTSYS;
Matthew Wilcox150030b2007-12-06 16:24:39 -050037 } while (!fatal_signal_pending(current));
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 return res;
39}
40
Chuck Leverdead28d2006-03-20 13:44:23 -050041#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43static int
Chuck Lever006ea732006-03-20 13:44:14 -050044nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070045{
46 if (task->tk_status != -EJUKEBOX)
47 return 0;
Chuck Lever006ea732006-03-20 13:44:14 -050048 nfs_inc_stats(inode, NFSIOS_DELAY);
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 task->tk_status = 0;
50 rpc_restart_call(task);
51 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
52 return 1;
53}
54
J. Bruce Fields03c21732006-01-03 09:55:48 +010055static int
56do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
57 struct nfs_fsinfo *info)
58{
Chuck Leverdead28d2006-03-20 13:44:23 -050059 struct rpc_message msg = {
60 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
61 .rpc_argp = fhandle,
62 .rpc_resp = info,
63 };
J. Bruce Fields03c21732006-01-03 09:55:48 +010064 int status;
65
66 dprintk("%s: call fsinfo\n", __FUNCTION__);
67 nfs_fattr_init(info->fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -050068 status = rpc_call_sync(client, &msg, 0);
J. Bruce Fields03c21732006-01-03 09:55:48 +010069 dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status);
70 if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
Chuck Leverdead28d2006-03-20 13:44:23 -050071 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
72 msg.rpc_resp = info->fattr;
73 status = rpc_call_sync(client, &msg, 0);
J. Bruce Fields03c21732006-01-03 09:55:48 +010074 dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
75 }
76 return status;
77}
78
Linus Torvalds1da177e2005-04-16 15:20:36 -070079/*
David Howells54ceac42006-08-22 20:06:13 -040080 * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 */
82static int
83nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
84 struct nfs_fsinfo *info)
85{
86 int status;
87
J. Bruce Fields03c21732006-01-03 09:55:48 +010088 status = do_proc_get_root(server->client, fhandle, info);
David Howells5006a762006-08-22 20:06:12 -040089 if (status && server->nfs_client->cl_rpcclient != server->client)
90 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 return status;
92}
93
94/*
95 * One function for each procedure in the NFS protocol.
96 */
97static int
98nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
99 struct nfs_fattr *fattr)
100{
Chuck Leverdead28d2006-03-20 13:44:23 -0500101 struct rpc_message msg = {
102 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
103 .rpc_argp = fhandle,
104 .rpc_resp = fattr,
105 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 int status;
107
108 dprintk("NFS call getattr\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400109 nfs_fattr_init(fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500110 status = rpc_call_sync(server->client, &msg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 dprintk("NFS reply getattr: %d\n", status);
112 return status;
113}
114
115static int
116nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
117 struct iattr *sattr)
118{
119 struct inode *inode = dentry->d_inode;
120 struct nfs3_sattrargs arg = {
121 .fh = NFS_FH(inode),
122 .sattr = sattr,
123 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500124 struct rpc_message msg = {
125 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
126 .rpc_argp = &arg,
127 .rpc_resp = fattr,
128 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 int status;
130
131 dprintk("NFS call setattr\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400132 nfs_fattr_init(fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500133 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
Trond Myklebust65e43082005-08-16 11:49:44 -0400134 if (status == 0)
135 nfs_setattr_update_inode(inode, sattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 dprintk("NFS reply setattr: %d\n", status);
137 return status;
138}
139
140static int
141nfs3_proc_lookup(struct inode *dir, struct qstr *name,
142 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
143{
144 struct nfs_fattr dir_attr;
145 struct nfs3_diropargs arg = {
146 .fh = NFS_FH(dir),
147 .name = name->name,
148 .len = name->len
149 };
150 struct nfs3_diropres res = {
151 .dir_attr = &dir_attr,
152 .fh = fhandle,
153 .fattr = fattr
154 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500155 struct rpc_message msg = {
156 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
157 .rpc_argp = &arg,
158 .rpc_resp = &res,
159 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 int status;
161
162 dprintk("NFS call lookup %s\n", name->name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400163 nfs_fattr_init(&dir_attr);
164 nfs_fattr_init(fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500165 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebust81c76882007-10-02 10:30:00 -0400166 nfs_refresh_inode(dir, &dir_attr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500167 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
168 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
169 msg.rpc_argp = fhandle;
170 msg.rpc_resp = fattr;
171 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
172 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 dprintk("NFS reply lookup: %d\n", status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 return status;
175}
176
177static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
178{
179 struct nfs_fattr fattr;
180 struct nfs3_accessargs arg = {
181 .fh = NFS_FH(inode),
182 };
183 struct nfs3_accessres res = {
184 .fattr = &fattr,
185 };
186 struct rpc_message msg = {
187 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
188 .rpc_argp = &arg,
189 .rpc_resp = &res,
Chuck Leverdead28d2006-03-20 13:44:23 -0500190 .rpc_cred = entry->cred,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 };
192 int mode = entry->mask;
193 int status;
194
195 dprintk("NFS call access\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197 if (mode & MAY_READ)
198 arg.access |= NFS3_ACCESS_READ;
199 if (S_ISDIR(inode->i_mode)) {
200 if (mode & MAY_WRITE)
201 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
202 if (mode & MAY_EXEC)
203 arg.access |= NFS3_ACCESS_LOOKUP;
204 } else {
205 if (mode & MAY_WRITE)
206 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
207 if (mode & MAY_EXEC)
208 arg.access |= NFS3_ACCESS_EXECUTE;
209 }
Trond Myklebust0e574af2005-10-27 22:12:38 -0400210 nfs_fattr_init(&fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
212 nfs_refresh_inode(inode, &fattr);
213 if (status == 0) {
214 entry->mask = 0;
215 if (res.access & NFS3_ACCESS_READ)
216 entry->mask |= MAY_READ;
217 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
218 entry->mask |= MAY_WRITE;
219 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
220 entry->mask |= MAY_EXEC;
221 }
222 dprintk("NFS reply access: %d\n", status);
223 return status;
224}
225
226static int nfs3_proc_readlink(struct inode *inode, struct page *page,
227 unsigned int pgbase, unsigned int pglen)
228{
229 struct nfs_fattr fattr;
230 struct nfs3_readlinkargs args = {
231 .fh = NFS_FH(inode),
232 .pgbase = pgbase,
233 .pglen = pglen,
234 .pages = &page
235 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500236 struct rpc_message msg = {
237 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
238 .rpc_argp = &args,
239 .rpc_resp = &fattr,
240 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 int status;
242
243 dprintk("NFS call readlink\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400244 nfs_fattr_init(&fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500245 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 nfs_refresh_inode(inode, &fattr);
247 dprintk("NFS reply readlink: %d\n", status);
248 return status;
249}
250
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251/*
252 * Create a regular file.
253 * For now, we don't implement O_EXCL.
254 */
255static int
256nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
Trond Myklebust02a913a2005-10-18 14:20:17 -0700257 int flags, struct nameidata *nd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258{
259 struct nfs_fh fhandle;
260 struct nfs_fattr fattr;
261 struct nfs_fattr dir_attr;
262 struct nfs3_createargs arg = {
263 .fh = NFS_FH(dir),
264 .name = dentry->d_name.name,
265 .len = dentry->d_name.len,
266 .sattr = sattr,
267 };
268 struct nfs3_diropres res = {
269 .dir_attr = &dir_attr,
270 .fh = &fhandle,
271 .fattr = &fattr
272 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500273 struct rpc_message msg = {
274 .rpc_proc = &nfs3_procedures[NFS3PROC_CREATE],
275 .rpc_argp = &arg,
276 .rpc_resp = &res,
277 };
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000278 mode_t mode = sattr->ia_mode;
279 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
281 dprintk("NFS call create %s\n", dentry->d_name.name);
282 arg.createmode = NFS3_CREATE_UNCHECKED;
283 if (flags & O_EXCL) {
284 arg.createmode = NFS3_CREATE_EXCLUSIVE;
285 arg.verifier[0] = jiffies;
286 arg.verifier[1] = current->pid;
287 }
288
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000289 sattr->ia_mode &= ~current->fs->umask;
290
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291again:
Trond Myklebust0e574af2005-10-27 22:12:38 -0400292 nfs_fattr_init(&dir_attr);
293 nfs_fattr_init(&fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500294 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
295 nfs_refresh_inode(dir, &dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
297 /* If the server doesn't support the exclusive creation semantics,
298 * try again with simple 'guarded' mode. */
Andy Ryan46b9f8e2006-11-07 14:36:26 -0600299 if (status == -ENOTSUPP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 switch (arg.createmode) {
301 case NFS3_CREATE_EXCLUSIVE:
302 arg.createmode = NFS3_CREATE_GUARDED;
303 break;
304
305 case NFS3_CREATE_GUARDED:
306 arg.createmode = NFS3_CREATE_UNCHECKED;
307 break;
308
309 case NFS3_CREATE_UNCHECKED:
310 goto out;
311 }
312 goto again;
313 }
314
315 if (status == 0)
316 status = nfs_instantiate(dentry, &fhandle, &fattr);
317 if (status != 0)
318 goto out;
319
320 /* When we created the file with exclusive semantics, make
321 * sure we set the attributes afterwards. */
322 if (arg.createmode == NFS3_CREATE_EXCLUSIVE) {
323 dprintk("NFS call setattr (post-create)\n");
324
325 if (!(sattr->ia_valid & ATTR_ATIME_SET))
326 sattr->ia_valid |= ATTR_ATIME;
327 if (!(sattr->ia_valid & ATTR_MTIME_SET))
328 sattr->ia_valid |= ATTR_MTIME;
329
330 /* Note: we could use a guarded setattr here, but I'm
331 * not sure this buys us anything (and I'd have
332 * to revamp the NFSv3 XDR code) */
333 status = nfs3_proc_setattr(dentry, &fattr, sattr);
Trond Myklebuste2f032e2007-06-05 19:27:00 -0400334 nfs_post_op_update_inode(dentry->d_inode, &fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 dprintk("NFS reply setattr (post-create): %d\n", status);
336 }
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000337 if (status != 0)
338 goto out;
339 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340out:
341 dprintk("NFS reply create: %d\n", status);
342 return status;
343}
344
345static int
346nfs3_proc_remove(struct inode *dir, struct qstr *name)
347{
Trond Myklebust4fdc17b2007-07-14 15:39:57 -0400348 struct nfs_removeargs arg = {
349 .fh = NFS_FH(dir),
350 .name.len = name->len,
351 .name.name = name->name,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 };
Trond Myklebust4fdc17b2007-07-14 15:39:57 -0400353 struct nfs_removeres res;
354 struct rpc_message msg = {
355 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
356 .rpc_argp = &arg,
357 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 };
359 int status;
360
361 dprintk("NFS call remove %s\n", name->name);
Trond Myklebust4fdc17b2007-07-14 15:39:57 -0400362 nfs_fattr_init(&res.dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebust4fdc17b2007-07-14 15:39:57 -0400364 nfs_post_op_update_inode(dir, &res.dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 dprintk("NFS reply remove: %d\n", status);
366 return status;
367}
368
Trond Myklebuste4eff1a2007-07-14 15:39:58 -0400369static void
370nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373}
374
375static int
Trond Myklebuste4eff1a2007-07-14 15:39:58 -0400376nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377{
Trond Myklebuste4eff1a2007-07-14 15:39:58 -0400378 struct nfs_removeres *res;
379 if (nfs3_async_handle_jukebox(task, dir))
380 return 0;
381 res = task->tk_msg.rpc_resp;
382 nfs_post_op_update_inode(dir, &res->dir_attr);
383 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384}
385
386static int
387nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
388 struct inode *new_dir, struct qstr *new_name)
389{
390 struct nfs_fattr old_dir_attr, new_dir_attr;
391 struct nfs3_renameargs arg = {
392 .fromfh = NFS_FH(old_dir),
393 .fromname = old_name->name,
394 .fromlen = old_name->len,
395 .tofh = NFS_FH(new_dir),
396 .toname = new_name->name,
397 .tolen = new_name->len
398 };
399 struct nfs3_renameres res = {
400 .fromattr = &old_dir_attr,
401 .toattr = &new_dir_attr
402 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500403 struct rpc_message msg = {
404 .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
405 .rpc_argp = &arg,
406 .rpc_resp = &res,
407 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 int status;
409
410 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400411 nfs_fattr_init(&old_dir_attr);
412 nfs_fattr_init(&new_dir_attr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500413 status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400414 nfs_post_op_update_inode(old_dir, &old_dir_attr);
415 nfs_post_op_update_inode(new_dir, &new_dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 dprintk("NFS reply rename: %d\n", status);
417 return status;
418}
419
420static int
421nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
422{
423 struct nfs_fattr dir_attr, fattr;
424 struct nfs3_linkargs arg = {
425 .fromfh = NFS_FH(inode),
426 .tofh = NFS_FH(dir),
427 .toname = name->name,
428 .tolen = name->len
429 };
430 struct nfs3_linkres res = {
431 .dir_attr = &dir_attr,
432 .fattr = &fattr
433 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500434 struct rpc_message msg = {
435 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
436 .rpc_argp = &arg,
437 .rpc_resp = &res,
438 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 int status;
440
441 dprintk("NFS call link %s\n", name->name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400442 nfs_fattr_init(&dir_attr);
443 nfs_fattr_init(&fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500444 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400445 nfs_post_op_update_inode(dir, &dir_attr);
446 nfs_post_op_update_inode(inode, &fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 dprintk("NFS reply link: %d\n", status);
448 return status;
449}
450
451static int
Chuck Lever94a6d752006-08-22 20:06:23 -0400452nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
453 unsigned int len, struct iattr *sattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454{
Chuck Lever4f390c12006-08-22 20:06:22 -0400455 struct nfs_fh fhandle;
456 struct nfs_fattr fattr, dir_attr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 struct nfs3_symlinkargs arg = {
458 .fromfh = NFS_FH(dir),
Chuck Lever4f390c12006-08-22 20:06:22 -0400459 .fromname = dentry->d_name.name,
460 .fromlen = dentry->d_name.len,
Chuck Lever94a6d752006-08-22 20:06:23 -0400461 .pages = &page,
462 .pathlen = len,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 .sattr = sattr
464 };
465 struct nfs3_diropres res = {
466 .dir_attr = &dir_attr,
Chuck Lever4f390c12006-08-22 20:06:22 -0400467 .fh = &fhandle,
468 .fattr = &fattr
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500470 struct rpc_message msg = {
471 .rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK],
472 .rpc_argp = &arg,
473 .rpc_resp = &res,
474 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 int status;
476
Chuck Lever94a6d752006-08-22 20:06:23 -0400477 if (len > NFS3_MAXPATHLEN)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 return -ENAMETOOLONG;
Chuck Lever4f390c12006-08-22 20:06:22 -0400479
Chuck Lever94a6d752006-08-22 20:06:23 -0400480 dprintk("NFS call symlink %s\n", dentry->d_name.name);
481
Trond Myklebust0e574af2005-10-27 22:12:38 -0400482 nfs_fattr_init(&dir_attr);
Chuck Lever4f390c12006-08-22 20:06:22 -0400483 nfs_fattr_init(&fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500484 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400485 nfs_post_op_update_inode(dir, &dir_attr);
Chuck Lever4f390c12006-08-22 20:06:22 -0400486 if (status != 0)
487 goto out;
488 status = nfs_instantiate(dentry, &fhandle, &fattr);
489out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 dprintk("NFS reply symlink: %d\n", status);
491 return status;
492}
493
494static int
495nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
496{
497 struct nfs_fh fhandle;
498 struct nfs_fattr fattr, dir_attr;
499 struct nfs3_mkdirargs arg = {
500 .fh = NFS_FH(dir),
501 .name = dentry->d_name.name,
502 .len = dentry->d_name.len,
503 .sattr = sattr
504 };
505 struct nfs3_diropres res = {
506 .dir_attr = &dir_attr,
507 .fh = &fhandle,
508 .fattr = &fattr
509 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500510 struct rpc_message msg = {
511 .rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR],
512 .rpc_argp = &arg,
513 .rpc_resp = &res,
514 };
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000515 int mode = sattr->ia_mode;
516 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
518 dprintk("NFS call mkdir %s\n", dentry->d_name.name);
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000519
520 sattr->ia_mode &= ~current->fs->umask;
521
Trond Myklebust0e574af2005-10-27 22:12:38 -0400522 nfs_fattr_init(&dir_attr);
523 nfs_fattr_init(&fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500524 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400525 nfs_post_op_update_inode(dir, &dir_attr);
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000526 if (status != 0)
527 goto out;
528 status = nfs_instantiate(dentry, &fhandle, &fattr);
529 if (status != 0)
530 goto out;
531 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
532out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 dprintk("NFS reply mkdir: %d\n", status);
534 return status;
535}
536
537static int
538nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
539{
540 struct nfs_fattr dir_attr;
541 struct nfs3_diropargs arg = {
542 .fh = NFS_FH(dir),
543 .name = name->name,
544 .len = name->len
545 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500546 struct rpc_message msg = {
547 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
548 .rpc_argp = &arg,
549 .rpc_resp = &dir_attr,
550 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 int status;
552
553 dprintk("NFS call rmdir %s\n", name->name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400554 nfs_fattr_init(&dir_attr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500555 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400556 nfs_post_op_update_inode(dir, &dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 dprintk("NFS reply rmdir: %d\n", status);
558 return status;
559}
560
561/*
562 * The READDIR implementation is somewhat hackish - we pass the user buffer
563 * to the encode function, which installs it in the receive iovec.
564 * The decode function itself doesn't perform any decoding, it just makes
565 * sure the reply is syntactically correct.
566 *
567 * Also note that this implementation handles both plain readdir and
568 * readdirplus.
569 */
570static int
571nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
572 u64 cookie, struct page *page, unsigned int count, int plus)
573{
574 struct inode *dir = dentry->d_inode;
575 struct nfs_fattr dir_attr;
Al Virobc4785c2006-10-19 23:28:51 -0700576 __be32 *verf = NFS_COOKIEVERF(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 struct nfs3_readdirargs arg = {
578 .fh = NFS_FH(dir),
579 .cookie = cookie,
580 .verf = {verf[0], verf[1]},
581 .plus = plus,
582 .count = count,
583 .pages = &page
584 };
585 struct nfs3_readdirres res = {
586 .dir_attr = &dir_attr,
587 .verf = verf,
588 .plus = plus
589 };
590 struct rpc_message msg = {
591 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
592 .rpc_argp = &arg,
593 .rpc_resp = &res,
594 .rpc_cred = cred
595 };
596 int status;
597
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 if (plus)
599 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
600
601 dprintk("NFS call readdir%s %d\n",
602 plus? "plus" : "", (unsigned int) cookie);
603
Trond Myklebust0e574af2005-10-27 22:12:38 -0400604 nfs_fattr_init(&dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebustc4812992007-09-28 17:11:45 -0400606
607 nfs_invalidate_atime(dir);
608
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 nfs_refresh_inode(dir, &dir_attr);
610 dprintk("NFS reply readdir: %d\n", status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 return status;
612}
613
614static int
615nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
616 dev_t rdev)
617{
618 struct nfs_fh fh;
619 struct nfs_fattr fattr, dir_attr;
620 struct nfs3_mknodargs arg = {
621 .fh = NFS_FH(dir),
622 .name = dentry->d_name.name,
623 .len = dentry->d_name.len,
624 .sattr = sattr,
625 .rdev = rdev
626 };
627 struct nfs3_diropres res = {
628 .dir_attr = &dir_attr,
629 .fh = &fh,
630 .fattr = &fattr
631 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500632 struct rpc_message msg = {
633 .rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD],
634 .rpc_argp = &arg,
635 .rpc_resp = &res,
636 };
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000637 mode_t mode = sattr->ia_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 int status;
639
640 switch (sattr->ia_mode & S_IFMT) {
641 case S_IFBLK: arg.type = NF3BLK; break;
642 case S_IFCHR: arg.type = NF3CHR; break;
643 case S_IFIFO: arg.type = NF3FIFO; break;
644 case S_IFSOCK: arg.type = NF3SOCK; break;
645 default: return -EINVAL;
646 }
647
648 dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
649 MAJOR(rdev), MINOR(rdev));
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000650
651 sattr->ia_mode &= ~current->fs->umask;
652
Trond Myklebust0e574af2005-10-27 22:12:38 -0400653 nfs_fattr_init(&dir_attr);
654 nfs_fattr_init(&fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500655 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400656 nfs_post_op_update_inode(dir, &dir_attr);
Andreas Gruenbacher055ffbe2005-06-22 17:16:27 +0000657 if (status != 0)
658 goto out;
659 status = nfs_instantiate(dentry, &fh, &fattr);
660 if (status != 0)
661 goto out;
662 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
663out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 dprintk("NFS reply mknod: %d\n", status);
665 return status;
666}
667
668static int
669nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
670 struct nfs_fsstat *stat)
671{
Chuck Leverdead28d2006-03-20 13:44:23 -0500672 struct rpc_message msg = {
673 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
674 .rpc_argp = fhandle,
675 .rpc_resp = stat,
676 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 int status;
678
679 dprintk("NFS call fsstat\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400680 nfs_fattr_init(stat->fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500681 status = rpc_call_sync(server->client, &msg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 dprintk("NFS reply statfs: %d\n", status);
683 return status;
684}
685
686static int
687nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
688 struct nfs_fsinfo *info)
689{
Chuck Leverdead28d2006-03-20 13:44:23 -0500690 struct rpc_message msg = {
691 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
692 .rpc_argp = fhandle,
693 .rpc_resp = info,
694 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 int status;
696
697 dprintk("NFS call fsinfo\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400698 nfs_fattr_init(info->fattr);
David Howells5006a762006-08-22 20:06:12 -0400699 status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 dprintk("NFS reply fsinfo: %d\n", status);
701 return status;
702}
703
704static int
705nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
706 struct nfs_pathconf *info)
707{
Chuck Leverdead28d2006-03-20 13:44:23 -0500708 struct rpc_message msg = {
709 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
710 .rpc_argp = fhandle,
711 .rpc_resp = info,
712 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 int status;
714
715 dprintk("NFS call pathconf\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400716 nfs_fattr_init(info->fattr);
Chuck Leverdead28d2006-03-20 13:44:23 -0500717 status = rpc_call_sync(server->client, &msg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 dprintk("NFS reply pathconf: %d\n", status);
719 return status;
720}
721
Trond Myklebustec06c092006-03-20 13:44:27 -0500722static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723{
Chuck Lever006ea732006-03-20 13:44:14 -0500724 if (nfs3_async_handle_jukebox(task, data->inode))
Trond Myklebustec06c092006-03-20 13:44:27 -0500725 return -EAGAIN;
Trond Myklebust8850df92007-09-28 17:20:07 -0400726
727 nfs_invalidate_atime(data->inode);
728 nfs_refresh_inode(data->inode, &data->fattr);
Trond Myklebustec06c092006-03-20 13:44:27 -0500729 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730}
731
Trond Myklebustbdc7f022007-07-14 15:40:00 -0400732static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733{
Trond Myklebustbdc7f022007-07-14 15:40:00 -0400734 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735}
736
Trond Myklebust788e7a82006-03-20 13:44:27 -0500737static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738{
Chuck Lever006ea732006-03-20 13:44:14 -0500739 if (nfs3_async_handle_jukebox(task, data->inode))
Trond Myklebust788e7a82006-03-20 13:44:27 -0500740 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 if (task->tk_status >= 0)
Trond Myklebust70ca8852007-09-30 15:21:24 -0400742 nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
Trond Myklebust788e7a82006-03-20 13:44:27 -0500743 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744}
745
Trond Myklebustbdc7f022007-07-14 15:40:00 -0400746static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747{
Trond Myklebustbdc7f022007-07-14 15:40:00 -0400748 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749}
750
Trond Myklebust788e7a82006-03-20 13:44:27 -0500751static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752{
Chuck Lever006ea732006-03-20 13:44:14 -0500753 if (nfs3_async_handle_jukebox(task, data->inode))
Trond Myklebust788e7a82006-03-20 13:44:27 -0500754 return -EAGAIN;
Trond Myklebust9e08a3c2007-10-08 14:10:31 -0400755 nfs_refresh_inode(data->inode, data->res.fattr);
Trond Myklebust788e7a82006-03-20 13:44:27 -0500756 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757}
758
Trond Myklebustbdc7f022007-07-14 15:40:00 -0400759static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760{
Trond Myklebustbdc7f022007-07-14 15:40:00 -0400761 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762}
763
764static int
765nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
766{
Chuck Lever1093a602008-01-11 17:09:59 -0500767 struct inode *inode = filp->f_path.dentry->d_inode;
768
769 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770}
771
David Howells509de812006-08-22 20:06:11 -0400772const struct nfs_rpc_ops nfs_v3_clientops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 .version = 3, /* protocol version */
774 .dentry_ops = &nfs_dentry_operations,
Andreas Gruenbacherb7fa0552005-06-22 17:16:27 +0000775 .dir_inode_ops = &nfs3_dir_inode_operations,
776 .file_inode_ops = &nfs3_file_inode_operations,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777 .getroot = nfs3_proc_get_root,
778 .getattr = nfs3_proc_getattr,
779 .setattr = nfs3_proc_setattr,
780 .lookup = nfs3_proc_lookup,
781 .access = nfs3_proc_access,
782 .readlink = nfs3_proc_readlink,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 .create = nfs3_proc_create,
784 .remove = nfs3_proc_remove,
785 .unlink_setup = nfs3_proc_unlink_setup,
786 .unlink_done = nfs3_proc_unlink_done,
787 .rename = nfs3_proc_rename,
788 .link = nfs3_proc_link,
789 .symlink = nfs3_proc_symlink,
790 .mkdir = nfs3_proc_mkdir,
791 .rmdir = nfs3_proc_rmdir,
792 .readdir = nfs3_proc_readdir,
793 .mknod = nfs3_proc_mknod,
794 .statfs = nfs3_proc_statfs,
795 .fsinfo = nfs3_proc_fsinfo,
796 .pathconf = nfs3_proc_pathconf,
797 .decode_dirent = nfs3_decode_dirent,
798 .read_setup = nfs3_proc_read_setup,
Trond Myklebustec06c092006-03-20 13:44:27 -0500799 .read_done = nfs3_read_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 .write_setup = nfs3_proc_write_setup,
Trond Myklebust788e7a82006-03-20 13:44:27 -0500801 .write_done = nfs3_write_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 .commit_setup = nfs3_proc_commit_setup,
Trond Myklebust788e7a82006-03-20 13:44:27 -0500803 .commit_done = nfs3_commit_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 .file_open = nfs_open,
805 .file_release = nfs_release,
806 .lock = nfs3_proc_lock,
Andreas Gruenbacher5c6a9f72005-06-22 17:16:27 +0000807 .clear_acl_cache = nfs3_forget_cached_acls,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808};