]>
Commit | Line | Data |
---|---|---|
08e0e7c8 | 1 | /* AFS File Server client stubs |
1da177e4 | 2 | * |
08e0e7c8 | 3 | * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
1da177e4 LT |
4 | * Written by David Howells (dhowells@redhat.com) |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/init.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
1da177e4 | 14 | #include <linux/sched.h> |
08e0e7c8 | 15 | #include <linux/circ_buf.h> |
1da177e4 | 16 | #include "internal.h" |
08e0e7c8 | 17 | #include "afs_fs.h" |
1da177e4 | 18 | |
6db3ac3c DH |
19 | /* |
20 | * We need somewhere to discard into in case the server helpfully returns more | |
21 | * than we asked for in FS.FetchData{,64}. | |
22 | */ | |
23 | static u8 afs_discard_buffer[64]; | |
24 | ||
c435ee34 DH |
25 | static inline void afs_use_fs_server(struct afs_call *call, struct afs_server *server) |
26 | { | |
27 | call->server = afs_get_server(server); | |
28 | } | |
29 | ||
260a9803 DH |
30 | /* |
31 | * decode an AFSFid block | |
32 | */ | |
33 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
34 | { | |
35 | const __be32 *bp = *_bp; | |
36 | ||
37 | fid->vid = ntohl(*bp++); | |
38 | fid->vnode = ntohl(*bp++); | |
39 | fid->unique = ntohl(*bp++); | |
40 | *_bp = bp; | |
41 | } | |
42 | ||
1da177e4 | 43 | /* |
08e0e7c8 | 44 | * decode an AFSFetchStatus block |
1da177e4 | 45 | */ |
08e0e7c8 | 46 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 47 | struct afs_file_status *status, |
31143d5d DH |
48 | struct afs_vnode *vnode, |
49 | afs_dataversion_t *store_version) | |
1da177e4 | 50 | { |
31143d5d | 51 | afs_dataversion_t expected_version; |
08e0e7c8 DH |
52 | const __be32 *bp = *_bp; |
53 | umode_t mode; | |
260a9803 | 54 | u64 data_version, size; |
c435ee34 | 55 | bool changed = false; |
a0a5386a EB |
56 | kuid_t owner; |
57 | kgid_t group; | |
08e0e7c8 | 58 | |
c435ee34 DH |
59 | write_seqlock(&vnode->cb_lock); |
60 | ||
08e0e7c8 DH |
61 | #define EXTRACT(DST) \ |
62 | do { \ | |
63 | u32 x = ntohl(*bp++); \ | |
c435ee34 DH |
64 | if (DST != x) \ |
65 | changed |= true; \ | |
08e0e7c8 DH |
66 | DST = x; \ |
67 | } while (0) | |
68 | ||
260a9803 DH |
69 | status->if_version = ntohl(*bp++); |
70 | EXTRACT(status->type); | |
71 | EXTRACT(status->nlink); | |
72 | size = ntohl(*bp++); | |
08e0e7c8 | 73 | data_version = ntohl(*bp++); |
260a9803 | 74 | EXTRACT(status->author); |
a0a5386a EB |
75 | owner = make_kuid(&init_user_ns, ntohl(*bp++)); |
76 | changed |= !uid_eq(owner, status->owner); | |
77 | status->owner = owner; | |
260a9803 DH |
78 | EXTRACT(status->caller_access); /* call ticket dependent */ |
79 | EXTRACT(status->anon_access); | |
80 | EXTRACT(status->mode); | |
be080a6f DH |
81 | bp++; /* parent.vnode */ |
82 | bp++; /* parent.unique */ | |
08e0e7c8 | 83 | bp++; /* seg size */ |
260a9803 DH |
84 | status->mtime_client = ntohl(*bp++); |
85 | status->mtime_server = ntohl(*bp++); | |
a0a5386a EB |
86 | group = make_kgid(&init_user_ns, ntohl(*bp++)); |
87 | changed |= !gid_eq(group, status->group); | |
88 | status->group = group; | |
08e0e7c8 DH |
89 | bp++; /* sync counter */ |
90 | data_version |= (u64) ntohl(*bp++) << 32; | |
e8d6c554 | 91 | EXTRACT(status->lock_count); |
260a9803 DH |
92 | size |= (u64) ntohl(*bp++) << 32; |
93 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
94 | *_bp = bp; |
95 | ||
260a9803 DH |
96 | if (size != status->size) { |
97 | status->size = size; | |
98 | changed |= true; | |
08e0e7c8 | 99 | } |
260a9803 | 100 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
101 | |
102 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
103 | status->mtime_client, status->mtime_server); |
104 | ||
105 | if (vnode) { | |
260a9803 DH |
106 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { |
107 | _debug("vnode changed"); | |
108 | i_size_write(&vnode->vfs_inode, size); | |
109 | vnode->vfs_inode.i_uid = status->owner; | |
110 | vnode->vfs_inode.i_gid = status->group; | |
d6e43f75 | 111 | vnode->vfs_inode.i_generation = vnode->fid.unique; |
bfe86848 | 112 | set_nlink(&vnode->vfs_inode, status->nlink); |
260a9803 DH |
113 | |
114 | mode = vnode->vfs_inode.i_mode; | |
115 | mode &= ~S_IALLUGO; | |
116 | mode |= status->mode; | |
117 | barrier(); | |
118 | vnode->vfs_inode.i_mode = mode; | |
119 | } | |
120 | ||
ab94f5d0 | 121 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_client; |
260a9803 DH |
122 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; |
123 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
d6e43f75 | 124 | vnode->vfs_inode.i_version = data_version; |
260a9803 DH |
125 | } |
126 | ||
31143d5d DH |
127 | expected_version = status->data_version; |
128 | if (store_version) | |
129 | expected_version = *store_version; | |
130 | ||
131 | if (expected_version != data_version) { | |
260a9803 DH |
132 | status->data_version = data_version; |
133 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
134 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
135 | (unsigned long long) data_version, |
136 | vnode->fid.vid, vnode->fid.vnode); | |
c435ee34 | 137 | set_bit(AFS_VNODE_DIR_MODIFIED, &vnode->flags); |
260a9803 DH |
138 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); |
139 | } | |
31143d5d DH |
140 | } else if (store_version) { |
141 | status->data_version = data_version; | |
1da177e4 | 142 | } |
c435ee34 DH |
143 | |
144 | write_sequnlock(&vnode->cb_lock); | |
ec26815a | 145 | } |
1da177e4 | 146 | |
1da177e4 | 147 | /* |
08e0e7c8 | 148 | * decode an AFSCallBack block |
1da177e4 | 149 | */ |
c435ee34 DH |
150 | static void xdr_decode_AFSCallBack(struct afs_call *call, |
151 | struct afs_vnode *vnode, | |
152 | const __be32 **_bp) | |
1da177e4 | 153 | { |
08e0e7c8 | 154 | const __be32 *bp = *_bp; |
c435ee34 DH |
155 | u32 cb_expiry; |
156 | ||
157 | write_seqlock(&vnode->cb_lock); | |
158 | ||
159 | if (call->cb_break == (vnode->cb_break + call->server->cb_s_break)) { | |
160 | vnode->cb_version = ntohl(*bp++); | |
161 | cb_expiry = ntohl(*bp++); | |
162 | vnode->cb_type = ntohl(*bp++); | |
163 | vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds(); | |
164 | set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); | |
165 | } else { | |
166 | bp += 3; | |
167 | } | |
1da177e4 | 168 | |
c435ee34 | 169 | write_sequnlock(&vnode->cb_lock); |
08e0e7c8 | 170 | *_bp = bp; |
ec26815a | 171 | } |
1da177e4 | 172 | |
260a9803 DH |
173 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
174 | struct afs_callback *cb) | |
175 | { | |
176 | const __be32 *bp = *_bp; | |
177 | ||
178 | cb->version = ntohl(*bp++); | |
179 | cb->expiry = ntohl(*bp++); | |
180 | cb->type = ntohl(*bp++); | |
181 | *_bp = bp; | |
182 | } | |
183 | ||
1da177e4 | 184 | /* |
08e0e7c8 | 185 | * decode an AFSVolSync block |
1da177e4 | 186 | */ |
08e0e7c8 DH |
187 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
188 | struct afs_volsync *volsync) | |
1da177e4 | 189 | { |
08e0e7c8 | 190 | const __be32 *bp = *_bp; |
1da177e4 | 191 | |
08e0e7c8 DH |
192 | volsync->creation = ntohl(*bp++); |
193 | bp++; /* spare2 */ | |
194 | bp++; /* spare3 */ | |
195 | bp++; /* spare4 */ | |
196 | bp++; /* spare5 */ | |
197 | bp++; /* spare6 */ | |
198 | *_bp = bp; | |
199 | } | |
1da177e4 | 200 | |
31143d5d DH |
201 | /* |
202 | * encode the requested attributes into an AFSStoreStatus block | |
203 | */ | |
204 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
205 | { | |
206 | __be32 *bp = *_bp; | |
207 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
208 | ||
209 | mask = 0; | |
210 | if (attr->ia_valid & ATTR_MTIME) { | |
211 | mask |= AFS_SET_MTIME; | |
212 | mtime = attr->ia_mtime.tv_sec; | |
213 | } | |
214 | ||
215 | if (attr->ia_valid & ATTR_UID) { | |
216 | mask |= AFS_SET_OWNER; | |
a0a5386a | 217 | owner = from_kuid(&init_user_ns, attr->ia_uid); |
31143d5d DH |
218 | } |
219 | ||
220 | if (attr->ia_valid & ATTR_GID) { | |
221 | mask |= AFS_SET_GROUP; | |
a0a5386a | 222 | group = from_kgid(&init_user_ns, attr->ia_gid); |
31143d5d DH |
223 | } |
224 | ||
225 | if (attr->ia_valid & ATTR_MODE) { | |
226 | mask |= AFS_SET_MODE; | |
227 | mode = attr->ia_mode & S_IALLUGO; | |
228 | } | |
229 | ||
230 | *bp++ = htonl(mask); | |
231 | *bp++ = htonl(mtime); | |
232 | *bp++ = htonl(owner); | |
233 | *bp++ = htonl(group); | |
234 | *bp++ = htonl(mode); | |
235 | *bp++ = 0; /* segment size */ | |
236 | *_bp = bp; | |
237 | } | |
238 | ||
45222b9e DH |
239 | /* |
240 | * decode an AFSFetchVolumeStatus block | |
241 | */ | |
242 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, | |
243 | struct afs_volume_status *vs) | |
244 | { | |
245 | const __be32 *bp = *_bp; | |
246 | ||
247 | vs->vid = ntohl(*bp++); | |
248 | vs->parent_id = ntohl(*bp++); | |
249 | vs->online = ntohl(*bp++); | |
250 | vs->in_service = ntohl(*bp++); | |
251 | vs->blessed = ntohl(*bp++); | |
252 | vs->needs_salvage = ntohl(*bp++); | |
253 | vs->type = ntohl(*bp++); | |
254 | vs->min_quota = ntohl(*bp++); | |
255 | vs->max_quota = ntohl(*bp++); | |
256 | vs->blocks_in_use = ntohl(*bp++); | |
257 | vs->part_blocks_avail = ntohl(*bp++); | |
258 | vs->part_max_blocks = ntohl(*bp++); | |
259 | *_bp = bp; | |
260 | } | |
261 | ||
08e0e7c8 DH |
262 | /* |
263 | * deliver reply data to an FS.FetchStatus | |
264 | */ | |
d001648e | 265 | static int afs_deliver_fs_fetch_status(struct afs_call *call) |
08e0e7c8 | 266 | { |
97e3043a | 267 | struct afs_vnode *vnode = call->reply[0]; |
08e0e7c8 | 268 | const __be32 *bp; |
372ee163 | 269 | int ret; |
1da177e4 | 270 | |
d001648e | 271 | ret = afs_transfer_reply(call); |
372ee163 DH |
272 | if (ret < 0) |
273 | return ret; | |
1da177e4 | 274 | |
c435ee34 DH |
275 | _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode); |
276 | ||
08e0e7c8 DH |
277 | /* unmarshall the reply once we've received all of it */ |
278 | bp = call->buffer; | |
31143d5d | 279 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
c435ee34 | 280 | xdr_decode_AFSCallBack(call, vnode, &bp); |
97e3043a DH |
281 | if (call->reply[1]) |
282 | xdr_decode_AFSVolSync(&bp, call->reply[1]); | |
1da177e4 | 283 | |
08e0e7c8 DH |
284 | _leave(" = 0 [done]"); |
285 | return 0; | |
ec26815a | 286 | } |
08e0e7c8 DH |
287 | |
288 | /* | |
289 | * FS.FetchStatus operation type | |
290 | */ | |
291 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 292 | .name = "FS.FetchStatus", |
08e0e7c8 | 293 | .deliver = afs_deliver_fs_fetch_status, |
08e0e7c8 DH |
294 | .destructor = afs_flat_call_destructor, |
295 | }; | |
1da177e4 | 296 | |
1da177e4 LT |
297 | /* |
298 | * fetch the status information for a file | |
299 | */ | |
08e0e7c8 | 300 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 301 | struct key *key, |
08e0e7c8 DH |
302 | struct afs_vnode *vnode, |
303 | struct afs_volsync *volsync, | |
56ff9c83 | 304 | bool async) |
1da177e4 | 305 | { |
08e0e7c8 | 306 | struct afs_call *call; |
f044c884 | 307 | struct afs_net *net = afs_v2net(vnode); |
1da177e4 LT |
308 | __be32 *bp; |
309 | ||
416351f2 | 310 | _enter(",%x,{%x:%u},,", |
260a9803 | 311 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 312 | |
f044c884 | 313 | call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
314 | if (!call) |
315 | return -ENOMEM; | |
1da177e4 | 316 | |
00d3b7a4 | 317 | call->key = key; |
97e3043a DH |
318 | call->reply[0] = vnode; |
319 | call->reply[1] = volsync; | |
1da177e4 LT |
320 | |
321 | /* marshall the parameters */ | |
08e0e7c8 | 322 | bp = call->request; |
1da177e4 LT |
323 | bp[0] = htonl(FSFETCHSTATUS); |
324 | bp[1] = htonl(vnode->fid.vid); | |
325 | bp[2] = htonl(vnode->fid.vnode); | |
326 | bp[3] = htonl(vnode->fid.unique); | |
327 | ||
c435ee34 DH |
328 | call->cb_break = vnode->cb_break + server->cb_s_break; |
329 | afs_use_fs_server(call, server); | |
56ff9c83 | 330 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
ec26815a | 331 | } |
1da177e4 | 332 | |
1da177e4 | 333 | /* |
08e0e7c8 | 334 | * deliver reply data to an FS.FetchData |
1da177e4 | 335 | */ |
d001648e | 336 | static int afs_deliver_fs_fetch_data(struct afs_call *call) |
1da177e4 | 337 | { |
97e3043a DH |
338 | struct afs_vnode *vnode = call->reply[0]; |
339 | struct afs_read *req = call->reply[2]; | |
08e0e7c8 | 340 | const __be32 *bp; |
196ee9cd | 341 | unsigned int size; |
08e0e7c8 | 342 | void *buffer; |
1da177e4 | 343 | int ret; |
1da177e4 | 344 | |
6a0e3999 | 345 | _enter("{%u,%zu/%u;%llu/%llu}", |
196ee9cd DH |
346 | call->unmarshall, call->offset, call->count, |
347 | req->remain, req->actual_len); | |
08e0e7c8 DH |
348 | |
349 | switch (call->unmarshall) { | |
350 | case 0: | |
196ee9cd | 351 | req->actual_len = 0; |
08e0e7c8 DH |
352 | call->offset = 0; |
353 | call->unmarshall++; | |
b9b1f8d5 DH |
354 | if (call->operation_ID != FSFETCHDATA64) { |
355 | call->unmarshall++; | |
356 | goto no_msw; | |
357 | } | |
08e0e7c8 | 358 | |
b9b1f8d5 DH |
359 | /* extract the upper part of the returned data length of an |
360 | * FSFETCHDATA64 op (which should always be 0 using this | |
361 | * client) */ | |
08e0e7c8 | 362 | case 1: |
b9b1f8d5 | 363 | _debug("extract data length (MSW)"); |
d001648e | 364 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
365 | if (ret < 0) |
366 | return ret; | |
b9b1f8d5 | 367 | |
196ee9cd DH |
368 | req->actual_len = ntohl(call->tmp); |
369 | req->actual_len <<= 32; | |
b9b1f8d5 DH |
370 | call->offset = 0; |
371 | call->unmarshall++; | |
372 | ||
373 | no_msw: | |
374 | /* extract the returned data length */ | |
375 | case 2: | |
08e0e7c8 | 376 | _debug("extract data length"); |
d001648e | 377 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
378 | if (ret < 0) |
379 | return ret; | |
1da177e4 | 380 | |
196ee9cd DH |
381 | req->actual_len |= ntohl(call->tmp); |
382 | _debug("DATA length: %llu", req->actual_len); | |
196ee9cd DH |
383 | |
384 | req->remain = req->actual_len; | |
385 | call->offset = req->pos & (PAGE_SIZE - 1); | |
386 | req->index = 0; | |
387 | if (req->actual_len == 0) | |
388 | goto no_more_data; | |
08e0e7c8 DH |
389 | call->unmarshall++; |
390 | ||
196ee9cd | 391 | begin_page: |
6db3ac3c | 392 | ASSERTCMP(req->index, <, req->nr_pages); |
196ee9cd DH |
393 | if (req->remain > PAGE_SIZE - call->offset) |
394 | size = PAGE_SIZE - call->offset; | |
395 | else | |
396 | size = req->remain; | |
397 | call->count = call->offset + size; | |
398 | ASSERTCMP(call->count, <=, PAGE_SIZE); | |
399 | req->remain -= size; | |
400 | ||
08e0e7c8 | 401 | /* extract the returned data */ |
b9b1f8d5 | 402 | case 3: |
6a0e3999 | 403 | _debug("extract data %llu/%llu %zu/%u", |
196ee9cd DH |
404 | req->remain, req->actual_len, call->offset, call->count); |
405 | ||
406 | buffer = kmap(req->pages[req->index]); | |
407 | ret = afs_extract_data(call, buffer, call->count, true); | |
408 | kunmap(req->pages[req->index]); | |
409 | if (ret < 0) | |
410 | return ret; | |
411 | if (call->offset == PAGE_SIZE) { | |
412 | if (req->page_done) | |
413 | req->page_done(call, req); | |
29f06985 | 414 | req->index++; |
196ee9cd | 415 | if (req->remain > 0) { |
196ee9cd | 416 | call->offset = 0; |
e8e581a8 DH |
417 | if (req->index >= req->nr_pages) { |
418 | call->unmarshall = 4; | |
6db3ac3c | 419 | goto begin_discard; |
e8e581a8 | 420 | } |
196ee9cd DH |
421 | goto begin_page; |
422 | } | |
08e0e7c8 | 423 | } |
6db3ac3c DH |
424 | goto no_more_data; |
425 | ||
426 | /* Discard any excess data the server gave us */ | |
427 | begin_discard: | |
428 | case 4: | |
6a0e3999 | 429 | size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain); |
6db3ac3c | 430 | call->count = size; |
6a0e3999 | 431 | _debug("extract discard %llu/%llu %zu/%u", |
6db3ac3c DH |
432 | req->remain, req->actual_len, call->offset, call->count); |
433 | ||
434 | call->offset = 0; | |
435 | ret = afs_extract_data(call, afs_discard_buffer, call->count, true); | |
436 | req->remain -= call->offset; | |
437 | if (ret < 0) | |
438 | return ret; | |
439 | if (req->remain > 0) | |
440 | goto begin_discard; | |
1da177e4 | 441 | |
196ee9cd | 442 | no_more_data: |
08e0e7c8 | 443 | call->offset = 0; |
6db3ac3c | 444 | call->unmarshall = 5; |
1da177e4 | 445 | |
08e0e7c8 | 446 | /* extract the metadata */ |
6db3ac3c | 447 | case 5: |
d001648e DH |
448 | ret = afs_extract_data(call, call->buffer, |
449 | (21 + 3 + 6) * 4, false); | |
372ee163 DH |
450 | if (ret < 0) |
451 | return ret; | |
08e0e7c8 DH |
452 | |
453 | bp = call->buffer; | |
31143d5d | 454 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
c435ee34 | 455 | xdr_decode_AFSCallBack(call, vnode, &bp); |
97e3043a DH |
456 | if (call->reply[1]) |
457 | xdr_decode_AFSVolSync(&bp, call->reply[1]); | |
08e0e7c8 DH |
458 | |
459 | call->offset = 0; | |
460 | call->unmarshall++; | |
1da177e4 | 461 | |
6db3ac3c | 462 | case 6: |
08e0e7c8 | 463 | break; |
1da177e4 LT |
464 | } |
465 | ||
6db3ac3c DH |
466 | for (; req->index < req->nr_pages; req->index++) { |
467 | if (call->count < PAGE_SIZE) | |
468 | zero_user_segment(req->pages[req->index], | |
469 | call->count, PAGE_SIZE); | |
196ee9cd DH |
470 | if (req->page_done) |
471 | req->page_done(call, req); | |
6db3ac3c | 472 | call->count = 0; |
416351f2 DH |
473 | } |
474 | ||
08e0e7c8 DH |
475 | _leave(" = 0 [done]"); |
476 | return 0; | |
ec26815a | 477 | } |
1da177e4 | 478 | |
196ee9cd DH |
479 | static void afs_fetch_data_destructor(struct afs_call *call) |
480 | { | |
97e3043a | 481 | struct afs_read *req = call->reply[2]; |
196ee9cd DH |
482 | |
483 | afs_put_read(req); | |
484 | afs_flat_call_destructor(call); | |
485 | } | |
486 | ||
1da177e4 | 487 | /* |
08e0e7c8 | 488 | * FS.FetchData operation type |
1da177e4 | 489 | */ |
08e0e7c8 | 490 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 491 | .name = "FS.FetchData", |
08e0e7c8 | 492 | .deliver = afs_deliver_fs_fetch_data, |
196ee9cd | 493 | .destructor = afs_fetch_data_destructor, |
08e0e7c8 DH |
494 | }; |
495 | ||
b9b1f8d5 DH |
496 | static const struct afs_call_type afs_RXFSFetchData64 = { |
497 | .name = "FS.FetchData64", | |
498 | .deliver = afs_deliver_fs_fetch_data, | |
196ee9cd | 499 | .destructor = afs_fetch_data_destructor, |
b9b1f8d5 DH |
500 | }; |
501 | ||
502 | /* | |
503 | * fetch data from a very large file | |
504 | */ | |
505 | static int afs_fs_fetch_data64(struct afs_server *server, | |
506 | struct key *key, | |
507 | struct afs_vnode *vnode, | |
196ee9cd | 508 | struct afs_read *req, |
56ff9c83 | 509 | bool async) |
b9b1f8d5 DH |
510 | { |
511 | struct afs_call *call; | |
f044c884 | 512 | struct afs_net *net = afs_v2net(vnode); |
b9b1f8d5 DH |
513 | __be32 *bp; |
514 | ||
515 | _enter(""); | |
516 | ||
f044c884 | 517 | call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
b9b1f8d5 DH |
518 | if (!call) |
519 | return -ENOMEM; | |
520 | ||
521 | call->key = key; | |
97e3043a DH |
522 | call->reply[0] = vnode; |
523 | call->reply[1] = NULL; /* volsync */ | |
524 | call->reply[2] = req; | |
b9b1f8d5 DH |
525 | call->operation_ID = FSFETCHDATA64; |
526 | ||
527 | /* marshall the parameters */ | |
528 | bp = call->request; | |
529 | bp[0] = htonl(FSFETCHDATA64); | |
530 | bp[1] = htonl(vnode->fid.vid); | |
531 | bp[2] = htonl(vnode->fid.vnode); | |
532 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
533 | bp[4] = htonl(upper_32_bits(req->pos)); |
534 | bp[5] = htonl(lower_32_bits(req->pos)); | |
b9b1f8d5 | 535 | bp[6] = 0; |
196ee9cd | 536 | bp[7] = htonl(lower_32_bits(req->len)); |
b9b1f8d5 | 537 | |
196ee9cd | 538 | atomic_inc(&req->usage); |
c435ee34 DH |
539 | call->cb_break = vnode->cb_break + server->cb_s_break; |
540 | afs_use_fs_server(call, server); | |
56ff9c83 | 541 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
542 | } |
543 | ||
08e0e7c8 DH |
544 | /* |
545 | * fetch data from a file | |
546 | */ | |
547 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 548 | struct key *key, |
08e0e7c8 | 549 | struct afs_vnode *vnode, |
196ee9cd | 550 | struct afs_read *req, |
56ff9c83 | 551 | bool async) |
1da177e4 | 552 | { |
08e0e7c8 | 553 | struct afs_call *call; |
f044c884 | 554 | struct afs_net *net = afs_v2net(vnode); |
1da177e4 LT |
555 | __be32 *bp; |
556 | ||
196ee9cd DH |
557 | if (upper_32_bits(req->pos) || |
558 | upper_32_bits(req->len) || | |
559 | upper_32_bits(req->pos + req->len)) | |
56ff9c83 | 560 | return afs_fs_fetch_data64(server, key, vnode, req, async); |
b9b1f8d5 | 561 | |
08e0e7c8 | 562 | _enter(""); |
1da177e4 | 563 | |
f044c884 | 564 | call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
565 | if (!call) |
566 | return -ENOMEM; | |
1da177e4 | 567 | |
00d3b7a4 | 568 | call->key = key; |
97e3043a DH |
569 | call->reply[0] = vnode; |
570 | call->reply[1] = NULL; /* volsync */ | |
571 | call->reply[2] = req; | |
b9b1f8d5 | 572 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
573 | |
574 | /* marshall the parameters */ | |
08e0e7c8 DH |
575 | bp = call->request; |
576 | bp[0] = htonl(FSFETCHDATA); | |
577 | bp[1] = htonl(vnode->fid.vid); | |
578 | bp[2] = htonl(vnode->fid.vnode); | |
579 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
580 | bp[4] = htonl(lower_32_bits(req->pos)); |
581 | bp[5] = htonl(lower_32_bits(req->len)); | |
1da177e4 | 582 | |
196ee9cd | 583 | atomic_inc(&req->usage); |
c435ee34 DH |
584 | call->cb_break = vnode->cb_break + server->cb_s_break; |
585 | afs_use_fs_server(call, server); | |
56ff9c83 | 586 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
ec26815a | 587 | } |
260a9803 DH |
588 | |
589 | /* | |
590 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
591 | */ | |
d001648e | 592 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
260a9803 | 593 | { |
97e3043a | 594 | struct afs_vnode *vnode = call->reply[0]; |
260a9803 | 595 | const __be32 *bp; |
372ee163 | 596 | int ret; |
260a9803 | 597 | |
d001648e | 598 | _enter("{%u}", call->unmarshall); |
260a9803 | 599 | |
d001648e | 600 | ret = afs_transfer_reply(call); |
372ee163 DH |
601 | if (ret < 0) |
602 | return ret; | |
260a9803 DH |
603 | |
604 | /* unmarshall the reply once we've received all of it */ | |
605 | bp = call->buffer; | |
97e3043a DH |
606 | xdr_decode_AFSFid(&bp, call->reply[1]); |
607 | xdr_decode_AFSFetchStatus(&bp, call->reply[2], NULL, NULL); | |
31143d5d | 608 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
97e3043a DH |
609 | xdr_decode_AFSCallBack_raw(&bp, call->reply[3]); |
610 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ | |
260a9803 DH |
611 | |
612 | _leave(" = 0 [done]"); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | /* | |
617 | * FS.CreateFile and FS.MakeDir operation type | |
618 | */ | |
619 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
620 | .name = "FS.CreateXXXX", | |
621 | .deliver = afs_deliver_fs_create_vnode, | |
260a9803 DH |
622 | .destructor = afs_flat_call_destructor, |
623 | }; | |
624 | ||
625 | /* | |
626 | * create a file or make a directory | |
627 | */ | |
628 | int afs_fs_create(struct afs_server *server, | |
629 | struct key *key, | |
630 | struct afs_vnode *vnode, | |
631 | const char *name, | |
632 | umode_t mode, | |
633 | struct afs_fid *newfid, | |
634 | struct afs_file_status *newstatus, | |
635 | struct afs_callback *newcb, | |
56ff9c83 | 636 | bool async) |
260a9803 DH |
637 | { |
638 | struct afs_call *call; | |
f044c884 | 639 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
640 | size_t namesz, reqsz, padsz; |
641 | __be32 *bp; | |
642 | ||
643 | _enter(""); | |
644 | ||
645 | namesz = strlen(name); | |
646 | padsz = (4 - (namesz & 3)) & 3; | |
647 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
648 | ||
f044c884 | 649 | call = afs_alloc_flat_call(net, &afs_RXFSCreateXXXX, reqsz, |
260a9803 DH |
650 | (3 + 21 + 21 + 3 + 6) * 4); |
651 | if (!call) | |
652 | return -ENOMEM; | |
653 | ||
654 | call->key = key; | |
97e3043a DH |
655 | call->reply[0] = vnode; |
656 | call->reply[1] = newfid; | |
657 | call->reply[2] = newstatus; | |
658 | call->reply[3] = newcb; | |
260a9803 DH |
659 | |
660 | /* marshall the parameters */ | |
661 | bp = call->request; | |
662 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
663 | *bp++ = htonl(vnode->fid.vid); | |
664 | *bp++ = htonl(vnode->fid.vnode); | |
665 | *bp++ = htonl(vnode->fid.unique); | |
666 | *bp++ = htonl(namesz); | |
667 | memcpy(bp, name, namesz); | |
668 | bp = (void *) bp + namesz; | |
669 | if (padsz > 0) { | |
670 | memset(bp, 0, padsz); | |
671 | bp = (void *) bp + padsz; | |
672 | } | |
ab94f5d0 MD |
673 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
674 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
260a9803 DH |
675 | *bp++ = 0; /* owner */ |
676 | *bp++ = 0; /* group */ | |
677 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
678 | *bp++ = 0; /* segment size */ | |
679 | ||
c435ee34 | 680 | afs_use_fs_server(call, server); |
56ff9c83 | 681 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
682 | } |
683 | ||
684 | /* | |
685 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
686 | */ | |
d001648e | 687 | static int afs_deliver_fs_remove(struct afs_call *call) |
260a9803 | 688 | { |
97e3043a | 689 | struct afs_vnode *vnode = call->reply[0]; |
260a9803 | 690 | const __be32 *bp; |
372ee163 | 691 | int ret; |
260a9803 | 692 | |
d001648e | 693 | _enter("{%u}", call->unmarshall); |
260a9803 | 694 | |
d001648e | 695 | ret = afs_transfer_reply(call); |
372ee163 DH |
696 | if (ret < 0) |
697 | return ret; | |
260a9803 DH |
698 | |
699 | /* unmarshall the reply once we've received all of it */ | |
700 | bp = call->buffer; | |
31143d5d | 701 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
97e3043a | 702 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
703 | |
704 | _leave(" = 0 [done]"); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | /* | |
709 | * FS.RemoveDir/FS.RemoveFile operation type | |
710 | */ | |
711 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
712 | .name = "FS.RemoveXXXX", | |
713 | .deliver = afs_deliver_fs_remove, | |
260a9803 DH |
714 | .destructor = afs_flat_call_destructor, |
715 | }; | |
716 | ||
717 | /* | |
718 | * remove a file or directory | |
719 | */ | |
720 | int afs_fs_remove(struct afs_server *server, | |
721 | struct key *key, | |
722 | struct afs_vnode *vnode, | |
723 | const char *name, | |
724 | bool isdir, | |
56ff9c83 | 725 | bool async) |
260a9803 DH |
726 | { |
727 | struct afs_call *call; | |
f044c884 | 728 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
729 | size_t namesz, reqsz, padsz; |
730 | __be32 *bp; | |
731 | ||
732 | _enter(""); | |
733 | ||
734 | namesz = strlen(name); | |
735 | padsz = (4 - (namesz & 3)) & 3; | |
736 | reqsz = (5 * 4) + namesz + padsz; | |
737 | ||
f044c884 | 738 | call = afs_alloc_flat_call(net, &afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); |
260a9803 DH |
739 | if (!call) |
740 | return -ENOMEM; | |
741 | ||
742 | call->key = key; | |
97e3043a | 743 | call->reply[0] = vnode; |
260a9803 DH |
744 | |
745 | /* marshall the parameters */ | |
746 | bp = call->request; | |
747 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
748 | *bp++ = htonl(vnode->fid.vid); | |
749 | *bp++ = htonl(vnode->fid.vnode); | |
750 | *bp++ = htonl(vnode->fid.unique); | |
751 | *bp++ = htonl(namesz); | |
752 | memcpy(bp, name, namesz); | |
753 | bp = (void *) bp + namesz; | |
754 | if (padsz > 0) { | |
755 | memset(bp, 0, padsz); | |
756 | bp = (void *) bp + padsz; | |
757 | } | |
758 | ||
c435ee34 | 759 | afs_use_fs_server(call, server); |
56ff9c83 | 760 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
761 | } |
762 | ||
763 | /* | |
764 | * deliver reply data to an FS.Link | |
765 | */ | |
d001648e | 766 | static int afs_deliver_fs_link(struct afs_call *call) |
260a9803 | 767 | { |
97e3043a | 768 | struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1]; |
260a9803 | 769 | const __be32 *bp; |
372ee163 | 770 | int ret; |
260a9803 | 771 | |
d001648e | 772 | _enter("{%u}", call->unmarshall); |
260a9803 | 773 | |
d001648e | 774 | ret = afs_transfer_reply(call); |
372ee163 DH |
775 | if (ret < 0) |
776 | return ret; | |
260a9803 DH |
777 | |
778 | /* unmarshall the reply once we've received all of it */ | |
779 | bp = call->buffer; | |
31143d5d DH |
780 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
781 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
97e3043a | 782 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
783 | |
784 | _leave(" = 0 [done]"); | |
785 | return 0; | |
786 | } | |
787 | ||
788 | /* | |
789 | * FS.Link operation type | |
790 | */ | |
791 | static const struct afs_call_type afs_RXFSLink = { | |
792 | .name = "FS.Link", | |
793 | .deliver = afs_deliver_fs_link, | |
260a9803 DH |
794 | .destructor = afs_flat_call_destructor, |
795 | }; | |
796 | ||
797 | /* | |
798 | * make a hard link | |
799 | */ | |
800 | int afs_fs_link(struct afs_server *server, | |
801 | struct key *key, | |
802 | struct afs_vnode *dvnode, | |
803 | struct afs_vnode *vnode, | |
804 | const char *name, | |
56ff9c83 | 805 | bool async) |
260a9803 DH |
806 | { |
807 | struct afs_call *call; | |
f044c884 | 808 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
809 | size_t namesz, reqsz, padsz; |
810 | __be32 *bp; | |
811 | ||
812 | _enter(""); | |
813 | ||
814 | namesz = strlen(name); | |
815 | padsz = (4 - (namesz & 3)) & 3; | |
816 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
817 | ||
f044c884 | 818 | call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); |
260a9803 DH |
819 | if (!call) |
820 | return -ENOMEM; | |
821 | ||
822 | call->key = key; | |
97e3043a DH |
823 | call->reply[0] = dvnode; |
824 | call->reply[1] = vnode; | |
260a9803 DH |
825 | |
826 | /* marshall the parameters */ | |
827 | bp = call->request; | |
828 | *bp++ = htonl(FSLINK); | |
829 | *bp++ = htonl(dvnode->fid.vid); | |
830 | *bp++ = htonl(dvnode->fid.vnode); | |
831 | *bp++ = htonl(dvnode->fid.unique); | |
832 | *bp++ = htonl(namesz); | |
833 | memcpy(bp, name, namesz); | |
834 | bp = (void *) bp + namesz; | |
835 | if (padsz > 0) { | |
836 | memset(bp, 0, padsz); | |
837 | bp = (void *) bp + padsz; | |
838 | } | |
839 | *bp++ = htonl(vnode->fid.vid); | |
840 | *bp++ = htonl(vnode->fid.vnode); | |
841 | *bp++ = htonl(vnode->fid.unique); | |
842 | ||
c435ee34 | 843 | afs_use_fs_server(call, server); |
56ff9c83 | 844 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
845 | } |
846 | ||
847 | /* | |
848 | * deliver reply data to an FS.Symlink | |
849 | */ | |
d001648e | 850 | static int afs_deliver_fs_symlink(struct afs_call *call) |
260a9803 | 851 | { |
97e3043a | 852 | struct afs_vnode *vnode = call->reply[0]; |
260a9803 | 853 | const __be32 *bp; |
372ee163 | 854 | int ret; |
260a9803 | 855 | |
d001648e | 856 | _enter("{%u}", call->unmarshall); |
260a9803 | 857 | |
d001648e | 858 | ret = afs_transfer_reply(call); |
372ee163 DH |
859 | if (ret < 0) |
860 | return ret; | |
260a9803 DH |
861 | |
862 | /* unmarshall the reply once we've received all of it */ | |
863 | bp = call->buffer; | |
97e3043a DH |
864 | xdr_decode_AFSFid(&bp, call->reply[1]); |
865 | xdr_decode_AFSFetchStatus(&bp, call->reply[2], NULL, NULL); | |
31143d5d | 866 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
97e3043a | 867 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
868 | |
869 | _leave(" = 0 [done]"); | |
870 | return 0; | |
871 | } | |
872 | ||
873 | /* | |
874 | * FS.Symlink operation type | |
875 | */ | |
876 | static const struct afs_call_type afs_RXFSSymlink = { | |
877 | .name = "FS.Symlink", | |
878 | .deliver = afs_deliver_fs_symlink, | |
260a9803 DH |
879 | .destructor = afs_flat_call_destructor, |
880 | }; | |
881 | ||
882 | /* | |
883 | * create a symbolic link | |
884 | */ | |
885 | int afs_fs_symlink(struct afs_server *server, | |
886 | struct key *key, | |
887 | struct afs_vnode *vnode, | |
888 | const char *name, | |
889 | const char *contents, | |
890 | struct afs_fid *newfid, | |
891 | struct afs_file_status *newstatus, | |
56ff9c83 | 892 | bool async) |
260a9803 DH |
893 | { |
894 | struct afs_call *call; | |
f044c884 | 895 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
896 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; |
897 | __be32 *bp; | |
898 | ||
899 | _enter(""); | |
900 | ||
901 | namesz = strlen(name); | |
902 | padsz = (4 - (namesz & 3)) & 3; | |
903 | ||
904 | c_namesz = strlen(contents); | |
905 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
906 | ||
907 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
908 | ||
f044c884 | 909 | call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz, |
260a9803 DH |
910 | (3 + 21 + 21 + 6) * 4); |
911 | if (!call) | |
912 | return -ENOMEM; | |
913 | ||
914 | call->key = key; | |
97e3043a DH |
915 | call->reply[0] = vnode; |
916 | call->reply[1] = newfid; | |
917 | call->reply[2] = newstatus; | |
260a9803 DH |
918 | |
919 | /* marshall the parameters */ | |
920 | bp = call->request; | |
921 | *bp++ = htonl(FSSYMLINK); | |
922 | *bp++ = htonl(vnode->fid.vid); | |
923 | *bp++ = htonl(vnode->fid.vnode); | |
924 | *bp++ = htonl(vnode->fid.unique); | |
925 | *bp++ = htonl(namesz); | |
926 | memcpy(bp, name, namesz); | |
927 | bp = (void *) bp + namesz; | |
928 | if (padsz > 0) { | |
929 | memset(bp, 0, padsz); | |
930 | bp = (void *) bp + padsz; | |
931 | } | |
932 | *bp++ = htonl(c_namesz); | |
933 | memcpy(bp, contents, c_namesz); | |
934 | bp = (void *) bp + c_namesz; | |
935 | if (c_padsz > 0) { | |
936 | memset(bp, 0, c_padsz); | |
937 | bp = (void *) bp + c_padsz; | |
938 | } | |
ab94f5d0 MD |
939 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
940 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
260a9803 DH |
941 | *bp++ = 0; /* owner */ |
942 | *bp++ = 0; /* group */ | |
943 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
944 | *bp++ = 0; /* segment size */ | |
945 | ||
c435ee34 | 946 | afs_use_fs_server(call, server); |
56ff9c83 | 947 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
948 | } |
949 | ||
950 | /* | |
951 | * deliver reply data to an FS.Rename | |
952 | */ | |
d001648e | 953 | static int afs_deliver_fs_rename(struct afs_call *call) |
260a9803 | 954 | { |
97e3043a | 955 | struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1]; |
260a9803 | 956 | const __be32 *bp; |
372ee163 | 957 | int ret; |
260a9803 | 958 | |
d001648e | 959 | _enter("{%u}", call->unmarshall); |
260a9803 | 960 | |
d001648e | 961 | ret = afs_transfer_reply(call); |
372ee163 DH |
962 | if (ret < 0) |
963 | return ret; | |
260a9803 DH |
964 | |
965 | /* unmarshall the reply once we've received all of it */ | |
966 | bp = call->buffer; | |
31143d5d | 967 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 968 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
969 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
970 | NULL); | |
97e3043a | 971 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
972 | |
973 | _leave(" = 0 [done]"); | |
974 | return 0; | |
975 | } | |
976 | ||
977 | /* | |
978 | * FS.Rename operation type | |
979 | */ | |
980 | static const struct afs_call_type afs_RXFSRename = { | |
981 | .name = "FS.Rename", | |
982 | .deliver = afs_deliver_fs_rename, | |
260a9803 DH |
983 | .destructor = afs_flat_call_destructor, |
984 | }; | |
985 | ||
986 | /* | |
987 | * create a symbolic link | |
988 | */ | |
989 | int afs_fs_rename(struct afs_server *server, | |
990 | struct key *key, | |
991 | struct afs_vnode *orig_dvnode, | |
992 | const char *orig_name, | |
993 | struct afs_vnode *new_dvnode, | |
994 | const char *new_name, | |
56ff9c83 | 995 | bool async) |
260a9803 DH |
996 | { |
997 | struct afs_call *call; | |
f044c884 | 998 | struct afs_net *net = afs_v2net(orig_dvnode); |
260a9803 DH |
999 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; |
1000 | __be32 *bp; | |
1001 | ||
1002 | _enter(""); | |
1003 | ||
1004 | o_namesz = strlen(orig_name); | |
1005 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1006 | ||
1007 | n_namesz = strlen(new_name); | |
1008 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1009 | ||
1010 | reqsz = (4 * 4) + | |
1011 | 4 + o_namesz + o_padsz + | |
1012 | (3 * 4) + | |
1013 | 4 + n_namesz + n_padsz; | |
1014 | ||
f044c884 | 1015 | call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); |
260a9803 DH |
1016 | if (!call) |
1017 | return -ENOMEM; | |
1018 | ||
1019 | call->key = key; | |
97e3043a DH |
1020 | call->reply[0] = orig_dvnode; |
1021 | call->reply[1] = new_dvnode; | |
260a9803 DH |
1022 | |
1023 | /* marshall the parameters */ | |
1024 | bp = call->request; | |
1025 | *bp++ = htonl(FSRENAME); | |
1026 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1027 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1028 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1029 | *bp++ = htonl(o_namesz); | |
1030 | memcpy(bp, orig_name, o_namesz); | |
1031 | bp = (void *) bp + o_namesz; | |
1032 | if (o_padsz > 0) { | |
1033 | memset(bp, 0, o_padsz); | |
1034 | bp = (void *) bp + o_padsz; | |
1035 | } | |
1036 | ||
1037 | *bp++ = htonl(new_dvnode->fid.vid); | |
1038 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1039 | *bp++ = htonl(new_dvnode->fid.unique); | |
1040 | *bp++ = htonl(n_namesz); | |
1041 | memcpy(bp, new_name, n_namesz); | |
1042 | bp = (void *) bp + n_namesz; | |
1043 | if (n_padsz > 0) { | |
1044 | memset(bp, 0, n_padsz); | |
1045 | bp = (void *) bp + n_padsz; | |
1046 | } | |
1047 | ||
c435ee34 | 1048 | afs_use_fs_server(call, server); |
56ff9c83 | 1049 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 | 1050 | } |
31143d5d DH |
1051 | |
1052 | /* | |
1053 | * deliver reply data to an FS.StoreData | |
1054 | */ | |
d001648e | 1055 | static int afs_deliver_fs_store_data(struct afs_call *call) |
31143d5d | 1056 | { |
97e3043a | 1057 | struct afs_vnode *vnode = call->reply[0]; |
31143d5d | 1058 | const __be32 *bp; |
372ee163 | 1059 | int ret; |
31143d5d | 1060 | |
d001648e | 1061 | _enter(""); |
31143d5d | 1062 | |
d001648e | 1063 | ret = afs_transfer_reply(call); |
372ee163 DH |
1064 | if (ret < 0) |
1065 | return ret; | |
31143d5d DH |
1066 | |
1067 | /* unmarshall the reply once we've received all of it */ | |
1068 | bp = call->buffer; | |
1069 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1070 | &call->store_version); | |
97e3043a | 1071 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
31143d5d DH |
1072 | |
1073 | afs_pages_written_back(vnode, call); | |
1074 | ||
1075 | _leave(" = 0 [done]"); | |
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * FS.StoreData operation type | |
1081 | */ | |
1082 | static const struct afs_call_type afs_RXFSStoreData = { | |
1083 | .name = "FS.StoreData", | |
1084 | .deliver = afs_deliver_fs_store_data, | |
31143d5d DH |
1085 | .destructor = afs_flat_call_destructor, |
1086 | }; | |
1087 | ||
b9b1f8d5 DH |
1088 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1089 | .name = "FS.StoreData64", | |
1090 | .deliver = afs_deliver_fs_store_data, | |
b9b1f8d5 DH |
1091 | .destructor = afs_flat_call_destructor, |
1092 | }; | |
1093 | ||
1094 | /* | |
1095 | * store a set of pages to a very large file | |
1096 | */ | |
1097 | static int afs_fs_store_data64(struct afs_server *server, | |
1098 | struct afs_writeback *wb, | |
1099 | pgoff_t first, pgoff_t last, | |
1100 | unsigned offset, unsigned to, | |
1101 | loff_t size, loff_t pos, loff_t i_size, | |
56ff9c83 | 1102 | bool async) |
b9b1f8d5 DH |
1103 | { |
1104 | struct afs_vnode *vnode = wb->vnode; | |
1105 | struct afs_call *call; | |
f044c884 | 1106 | struct afs_net *net = afs_v2net(vnode); |
b9b1f8d5 DH |
1107 | __be32 *bp; |
1108 | ||
1109 | _enter(",%x,{%x:%u},,", | |
1110 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1111 | ||
f044c884 | 1112 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData64, |
b9b1f8d5 DH |
1113 | (4 + 6 + 3 * 2) * 4, |
1114 | (21 + 6) * 4); | |
1115 | if (!call) | |
1116 | return -ENOMEM; | |
1117 | ||
1118 | call->wb = wb; | |
1119 | call->key = wb->key; | |
97e3043a | 1120 | call->reply[0] = vnode; |
b9b1f8d5 DH |
1121 | call->mapping = vnode->vfs_inode.i_mapping; |
1122 | call->first = first; | |
1123 | call->last = last; | |
1124 | call->first_offset = offset; | |
1125 | call->last_to = to; | |
1126 | call->send_pages = true; | |
1127 | call->store_version = vnode->status.data_version + 1; | |
1128 | ||
1129 | /* marshall the parameters */ | |
1130 | bp = call->request; | |
1131 | *bp++ = htonl(FSSTOREDATA64); | |
1132 | *bp++ = htonl(vnode->fid.vid); | |
1133 | *bp++ = htonl(vnode->fid.vnode); | |
1134 | *bp++ = htonl(vnode->fid.unique); | |
1135 | ||
ab94f5d0 MD |
1136 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1137 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
b9b1f8d5 DH |
1138 | *bp++ = 0; /* owner */ |
1139 | *bp++ = 0; /* group */ | |
1140 | *bp++ = 0; /* unix mode */ | |
1141 | *bp++ = 0; /* segment size */ | |
1142 | ||
1143 | *bp++ = htonl(pos >> 32); | |
1144 | *bp++ = htonl((u32) pos); | |
1145 | *bp++ = htonl(size >> 32); | |
1146 | *bp++ = htonl((u32) size); | |
1147 | *bp++ = htonl(i_size >> 32); | |
1148 | *bp++ = htonl((u32) i_size); | |
1149 | ||
c435ee34 | 1150 | afs_use_fs_server(call, server); |
56ff9c83 | 1151 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
1152 | } |
1153 | ||
31143d5d DH |
1154 | /* |
1155 | * store a set of pages | |
1156 | */ | |
1157 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1158 | pgoff_t first, pgoff_t last, | |
1159 | unsigned offset, unsigned to, | |
56ff9c83 | 1160 | bool async) |
31143d5d DH |
1161 | { |
1162 | struct afs_vnode *vnode = wb->vnode; | |
1163 | struct afs_call *call; | |
f044c884 | 1164 | struct afs_net *net = afs_v2net(vnode); |
31143d5d DH |
1165 | loff_t size, pos, i_size; |
1166 | __be32 *bp; | |
1167 | ||
1168 | _enter(",%x,{%x:%u},,", | |
1169 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1170 | ||
146a1192 | 1171 | size = (loff_t)to - (loff_t)offset; |
31143d5d DH |
1172 | if (first != last) |
1173 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1174 | pos = (loff_t)first << PAGE_SHIFT; | |
1175 | pos += offset; | |
1176 | ||
1177 | i_size = i_size_read(&vnode->vfs_inode); | |
1178 | if (pos + size > i_size) | |
1179 | i_size = size + pos; | |
1180 | ||
1181 | _debug("size %llx, at %llx, i_size %llx", | |
1182 | (unsigned long long) size, (unsigned long long) pos, | |
1183 | (unsigned long long) i_size); | |
1184 | ||
b9b1f8d5 DH |
1185 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1186 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
56ff9c83 | 1187 | size, pos, i_size, async); |
31143d5d | 1188 | |
f044c884 | 1189 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData, |
31143d5d DH |
1190 | (4 + 6 + 3) * 4, |
1191 | (21 + 6) * 4); | |
1192 | if (!call) | |
1193 | return -ENOMEM; | |
1194 | ||
1195 | call->wb = wb; | |
1196 | call->key = wb->key; | |
97e3043a | 1197 | call->reply[0] = vnode; |
31143d5d DH |
1198 | call->mapping = vnode->vfs_inode.i_mapping; |
1199 | call->first = first; | |
1200 | call->last = last; | |
1201 | call->first_offset = offset; | |
1202 | call->last_to = to; | |
1203 | call->send_pages = true; | |
1204 | call->store_version = vnode->status.data_version + 1; | |
1205 | ||
1206 | /* marshall the parameters */ | |
1207 | bp = call->request; | |
1208 | *bp++ = htonl(FSSTOREDATA); | |
1209 | *bp++ = htonl(vnode->fid.vid); | |
1210 | *bp++ = htonl(vnode->fid.vnode); | |
1211 | *bp++ = htonl(vnode->fid.unique); | |
1212 | ||
ab94f5d0 MD |
1213 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1214 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
31143d5d DH |
1215 | *bp++ = 0; /* owner */ |
1216 | *bp++ = 0; /* group */ | |
1217 | *bp++ = 0; /* unix mode */ | |
1218 | *bp++ = 0; /* segment size */ | |
1219 | ||
1220 | *bp++ = htonl(pos); | |
1221 | *bp++ = htonl(size); | |
1222 | *bp++ = htonl(i_size); | |
1223 | ||
c435ee34 | 1224 | afs_use_fs_server(call, server); |
56ff9c83 | 1225 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d DH |
1226 | } |
1227 | ||
1228 | /* | |
1229 | * deliver reply data to an FS.StoreStatus | |
1230 | */ | |
d001648e | 1231 | static int afs_deliver_fs_store_status(struct afs_call *call) |
31143d5d DH |
1232 | { |
1233 | afs_dataversion_t *store_version; | |
97e3043a | 1234 | struct afs_vnode *vnode = call->reply[0]; |
31143d5d | 1235 | const __be32 *bp; |
372ee163 | 1236 | int ret; |
31143d5d | 1237 | |
d001648e | 1238 | _enter(""); |
31143d5d | 1239 | |
d001648e | 1240 | ret = afs_transfer_reply(call); |
372ee163 DH |
1241 | if (ret < 0) |
1242 | return ret; | |
31143d5d DH |
1243 | |
1244 | /* unmarshall the reply once we've received all of it */ | |
1245 | store_version = NULL; | |
1246 | if (call->operation_ID == FSSTOREDATA) | |
1247 | store_version = &call->store_version; | |
1248 | ||
1249 | bp = call->buffer; | |
1250 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
97e3043a | 1251 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
31143d5d DH |
1252 | |
1253 | _leave(" = 0 [done]"); | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | /* | |
1258 | * FS.StoreStatus operation type | |
1259 | */ | |
1260 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1261 | .name = "FS.StoreStatus", | |
1262 | .deliver = afs_deliver_fs_store_status, | |
31143d5d DH |
1263 | .destructor = afs_flat_call_destructor, |
1264 | }; | |
1265 | ||
1266 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1267 | .name = "FS.StoreData", | |
1268 | .deliver = afs_deliver_fs_store_status, | |
31143d5d DH |
1269 | .destructor = afs_flat_call_destructor, |
1270 | }; | |
1271 | ||
b9b1f8d5 DH |
1272 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1273 | .name = "FS.StoreData64", | |
1274 | .deliver = afs_deliver_fs_store_status, | |
b9b1f8d5 DH |
1275 | .destructor = afs_flat_call_destructor, |
1276 | }; | |
1277 | ||
1278 | /* | |
1279 | * set the attributes on a very large file, using FS.StoreData rather than | |
1280 | * FS.StoreStatus so as to alter the file size also | |
1281 | */ | |
1282 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1283 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1284 | bool async) |
b9b1f8d5 DH |
1285 | { |
1286 | struct afs_call *call; | |
f044c884 | 1287 | struct afs_net *net = afs_v2net(vnode); |
b9b1f8d5 DH |
1288 | __be32 *bp; |
1289 | ||
1290 | _enter(",%x,{%x:%u},,", | |
1291 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1292 | ||
1293 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1294 | ||
f044c884 | 1295 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status, |
b9b1f8d5 DH |
1296 | (4 + 6 + 3 * 2) * 4, |
1297 | (21 + 6) * 4); | |
1298 | if (!call) | |
1299 | return -ENOMEM; | |
1300 | ||
1301 | call->key = key; | |
97e3043a | 1302 | call->reply[0] = vnode; |
b9b1f8d5 DH |
1303 | call->store_version = vnode->status.data_version + 1; |
1304 | call->operation_ID = FSSTOREDATA; | |
1305 | ||
1306 | /* marshall the parameters */ | |
1307 | bp = call->request; | |
1308 | *bp++ = htonl(FSSTOREDATA64); | |
1309 | *bp++ = htonl(vnode->fid.vid); | |
1310 | *bp++ = htonl(vnode->fid.vnode); | |
1311 | *bp++ = htonl(vnode->fid.unique); | |
1312 | ||
1313 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1314 | ||
1315 | *bp++ = 0; /* position of start of write */ | |
1316 | *bp++ = 0; | |
1317 | *bp++ = 0; /* size of write */ | |
1318 | *bp++ = 0; | |
1319 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1320 | *bp++ = htonl((u32) attr->ia_size); | |
1321 | ||
c435ee34 | 1322 | afs_use_fs_server(call, server); |
56ff9c83 | 1323 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
1324 | } |
1325 | ||
31143d5d DH |
1326 | /* |
1327 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1328 | * so as to alter the file size also | |
1329 | */ | |
1330 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1331 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1332 | bool async) |
31143d5d DH |
1333 | { |
1334 | struct afs_call *call; | |
f044c884 | 1335 | struct afs_net *net = afs_v2net(vnode); |
31143d5d DH |
1336 | __be32 *bp; |
1337 | ||
1338 | _enter(",%x,{%x:%u},,", | |
1339 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1340 | ||
1341 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1342 | if (attr->ia_size >> 32) |
1343 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
56ff9c83 | 1344 | async); |
31143d5d | 1345 | |
f044c884 | 1346 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status, |
31143d5d DH |
1347 | (4 + 6 + 3) * 4, |
1348 | (21 + 6) * 4); | |
1349 | if (!call) | |
1350 | return -ENOMEM; | |
1351 | ||
1352 | call->key = key; | |
97e3043a | 1353 | call->reply[0] = vnode; |
31143d5d DH |
1354 | call->store_version = vnode->status.data_version + 1; |
1355 | call->operation_ID = FSSTOREDATA; | |
1356 | ||
1357 | /* marshall the parameters */ | |
1358 | bp = call->request; | |
1359 | *bp++ = htonl(FSSTOREDATA); | |
1360 | *bp++ = htonl(vnode->fid.vid); | |
1361 | *bp++ = htonl(vnode->fid.vnode); | |
1362 | *bp++ = htonl(vnode->fid.unique); | |
1363 | ||
1364 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1365 | ||
1366 | *bp++ = 0; /* position of start of write */ | |
1367 | *bp++ = 0; /* size of write */ | |
1368 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1369 | ||
c435ee34 | 1370 | afs_use_fs_server(call, server); |
56ff9c83 | 1371 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d DH |
1372 | } |
1373 | ||
1374 | /* | |
1375 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1376 | * size, and FS.StoreStatus otherwise | |
1377 | */ | |
1378 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1379 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1380 | bool async) |
31143d5d DH |
1381 | { |
1382 | struct afs_call *call; | |
f044c884 | 1383 | struct afs_net *net = afs_v2net(vnode); |
31143d5d DH |
1384 | __be32 *bp; |
1385 | ||
1386 | if (attr->ia_valid & ATTR_SIZE) | |
1387 | return afs_fs_setattr_size(server, key, vnode, attr, | |
56ff9c83 | 1388 | async); |
31143d5d DH |
1389 | |
1390 | _enter(",%x,{%x:%u},,", | |
1391 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1392 | ||
f044c884 | 1393 | call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus, |
31143d5d DH |
1394 | (4 + 6) * 4, |
1395 | (21 + 6) * 4); | |
1396 | if (!call) | |
1397 | return -ENOMEM; | |
1398 | ||
1399 | call->key = key; | |
97e3043a | 1400 | call->reply[0] = vnode; |
31143d5d DH |
1401 | call->operation_ID = FSSTORESTATUS; |
1402 | ||
1403 | /* marshall the parameters */ | |
1404 | bp = call->request; | |
1405 | *bp++ = htonl(FSSTORESTATUS); | |
1406 | *bp++ = htonl(vnode->fid.vid); | |
1407 | *bp++ = htonl(vnode->fid.vnode); | |
1408 | *bp++ = htonl(vnode->fid.unique); | |
1409 | ||
1410 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1411 | ||
c435ee34 | 1412 | afs_use_fs_server(call, server); |
56ff9c83 | 1413 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d | 1414 | } |
45222b9e DH |
1415 | |
1416 | /* | |
1417 | * deliver reply data to an FS.GetVolumeStatus | |
1418 | */ | |
d001648e | 1419 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
45222b9e DH |
1420 | { |
1421 | const __be32 *bp; | |
1422 | char *p; | |
1423 | int ret; | |
1424 | ||
d001648e | 1425 | _enter("{%u}", call->unmarshall); |
45222b9e DH |
1426 | |
1427 | switch (call->unmarshall) { | |
1428 | case 0: | |
1429 | call->offset = 0; | |
1430 | call->unmarshall++; | |
1431 | ||
1432 | /* extract the returned status record */ | |
1433 | case 1: | |
1434 | _debug("extract status"); | |
d001648e DH |
1435 | ret = afs_extract_data(call, call->buffer, |
1436 | 12 * 4, true); | |
372ee163 DH |
1437 | if (ret < 0) |
1438 | return ret; | |
45222b9e DH |
1439 | |
1440 | bp = call->buffer; | |
97e3043a | 1441 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]); |
45222b9e DH |
1442 | call->offset = 0; |
1443 | call->unmarshall++; | |
1444 | ||
1445 | /* extract the volume name length */ | |
1446 | case 2: | |
d001648e | 1447 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1448 | if (ret < 0) |
1449 | return ret; | |
45222b9e DH |
1450 | |
1451 | call->count = ntohl(call->tmp); | |
1452 | _debug("volname length: %u", call->count); | |
1453 | if (call->count >= AFSNAMEMAX) | |
1454 | return -EBADMSG; | |
1455 | call->offset = 0; | |
1456 | call->unmarshall++; | |
1457 | ||
1458 | /* extract the volume name */ | |
1459 | case 3: | |
1460 | _debug("extract volname"); | |
1461 | if (call->count > 0) { | |
97e3043a | 1462 | ret = afs_extract_data(call, call->reply[2], |
d001648e | 1463 | call->count, true); |
372ee163 DH |
1464 | if (ret < 0) |
1465 | return ret; | |
45222b9e DH |
1466 | } |
1467 | ||
97e3043a | 1468 | p = call->reply[2]; |
45222b9e DH |
1469 | p[call->count] = 0; |
1470 | _debug("volname '%s'", p); | |
1471 | ||
1472 | call->offset = 0; | |
1473 | call->unmarshall++; | |
1474 | ||
1475 | /* extract the volume name padding */ | |
1476 | if ((call->count & 3) == 0) { | |
1477 | call->unmarshall++; | |
1478 | goto no_volname_padding; | |
1479 | } | |
1480 | call->count = 4 - (call->count & 3); | |
1481 | ||
1482 | case 4: | |
d001648e DH |
1483 | ret = afs_extract_data(call, call->buffer, |
1484 | call->count, true); | |
372ee163 DH |
1485 | if (ret < 0) |
1486 | return ret; | |
45222b9e DH |
1487 | |
1488 | call->offset = 0; | |
1489 | call->unmarshall++; | |
1490 | no_volname_padding: | |
1491 | ||
1492 | /* extract the offline message length */ | |
1493 | case 5: | |
d001648e | 1494 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1495 | if (ret < 0) |
1496 | return ret; | |
45222b9e DH |
1497 | |
1498 | call->count = ntohl(call->tmp); | |
1499 | _debug("offline msg length: %u", call->count); | |
1500 | if (call->count >= AFSNAMEMAX) | |
1501 | return -EBADMSG; | |
1502 | call->offset = 0; | |
1503 | call->unmarshall++; | |
1504 | ||
1505 | /* extract the offline message */ | |
1506 | case 6: | |
1507 | _debug("extract offline"); | |
1508 | if (call->count > 0) { | |
97e3043a | 1509 | ret = afs_extract_data(call, call->reply[2], |
d001648e | 1510 | call->count, true); |
372ee163 DH |
1511 | if (ret < 0) |
1512 | return ret; | |
45222b9e DH |
1513 | } |
1514 | ||
97e3043a | 1515 | p = call->reply[2]; |
45222b9e DH |
1516 | p[call->count] = 0; |
1517 | _debug("offline '%s'", p); | |
1518 | ||
1519 | call->offset = 0; | |
1520 | call->unmarshall++; | |
1521 | ||
1522 | /* extract the offline message padding */ | |
1523 | if ((call->count & 3) == 0) { | |
1524 | call->unmarshall++; | |
1525 | goto no_offline_padding; | |
1526 | } | |
1527 | call->count = 4 - (call->count & 3); | |
1528 | ||
1529 | case 7: | |
d001648e DH |
1530 | ret = afs_extract_data(call, call->buffer, |
1531 | call->count, true); | |
372ee163 DH |
1532 | if (ret < 0) |
1533 | return ret; | |
45222b9e DH |
1534 | |
1535 | call->offset = 0; | |
1536 | call->unmarshall++; | |
1537 | no_offline_padding: | |
1538 | ||
1539 | /* extract the message of the day length */ | |
1540 | case 8: | |
d001648e | 1541 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1542 | if (ret < 0) |
1543 | return ret; | |
45222b9e DH |
1544 | |
1545 | call->count = ntohl(call->tmp); | |
1546 | _debug("motd length: %u", call->count); | |
1547 | if (call->count >= AFSNAMEMAX) | |
1548 | return -EBADMSG; | |
1549 | call->offset = 0; | |
1550 | call->unmarshall++; | |
1551 | ||
1552 | /* extract the message of the day */ | |
1553 | case 9: | |
1554 | _debug("extract motd"); | |
1555 | if (call->count > 0) { | |
97e3043a | 1556 | ret = afs_extract_data(call, call->reply[2], |
d001648e | 1557 | call->count, true); |
372ee163 DH |
1558 | if (ret < 0) |
1559 | return ret; | |
45222b9e DH |
1560 | } |
1561 | ||
97e3043a | 1562 | p = call->reply[2]; |
45222b9e DH |
1563 | p[call->count] = 0; |
1564 | _debug("motd '%s'", p); | |
1565 | ||
1566 | call->offset = 0; | |
1567 | call->unmarshall++; | |
1568 | ||
1569 | /* extract the message of the day padding */ | |
d001648e | 1570 | call->count = (4 - (call->count & 3)) & 3; |
45222b9e DH |
1571 | |
1572 | case 10: | |
d001648e DH |
1573 | ret = afs_extract_data(call, call->buffer, |
1574 | call->count, false); | |
372ee163 DH |
1575 | if (ret < 0) |
1576 | return ret; | |
45222b9e DH |
1577 | |
1578 | call->offset = 0; | |
1579 | call->unmarshall++; | |
45222b9e | 1580 | case 11: |
45222b9e DH |
1581 | break; |
1582 | } | |
1583 | ||
45222b9e DH |
1584 | _leave(" = 0 [done]"); |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | /* | |
1589 | * destroy an FS.GetVolumeStatus call | |
1590 | */ | |
1591 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1592 | { | |
97e3043a DH |
1593 | kfree(call->reply[2]); |
1594 | call->reply[2] = NULL; | |
45222b9e DH |
1595 | afs_flat_call_destructor(call); |
1596 | } | |
1597 | ||
1598 | /* | |
1599 | * FS.GetVolumeStatus operation type | |
1600 | */ | |
1601 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1602 | .name = "FS.GetVolumeStatus", | |
1603 | .deliver = afs_deliver_fs_get_volume_status, | |
45222b9e DH |
1604 | .destructor = afs_get_volume_status_call_destructor, |
1605 | }; | |
1606 | ||
1607 | /* | |
1608 | * fetch the status of a volume | |
1609 | */ | |
1610 | int afs_fs_get_volume_status(struct afs_server *server, | |
1611 | struct key *key, | |
1612 | struct afs_vnode *vnode, | |
1613 | struct afs_volume_status *vs, | |
56ff9c83 | 1614 | bool async) |
45222b9e DH |
1615 | { |
1616 | struct afs_call *call; | |
f044c884 | 1617 | struct afs_net *net = afs_v2net(vnode); |
45222b9e DH |
1618 | __be32 *bp; |
1619 | void *tmpbuf; | |
1620 | ||
1621 | _enter(""); | |
1622 | ||
1623 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1624 | if (!tmpbuf) | |
1625 | return -ENOMEM; | |
1626 | ||
f044c884 | 1627 | call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); |
45222b9e DH |
1628 | if (!call) { |
1629 | kfree(tmpbuf); | |
1630 | return -ENOMEM; | |
1631 | } | |
1632 | ||
1633 | call->key = key; | |
97e3043a DH |
1634 | call->reply[0] = vnode; |
1635 | call->reply[1] = vs; | |
1636 | call->reply[2] = tmpbuf; | |
45222b9e DH |
1637 | |
1638 | /* marshall the parameters */ | |
1639 | bp = call->request; | |
1640 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1641 | bp[1] = htonl(vnode->fid.vid); | |
1642 | ||
c435ee34 | 1643 | afs_use_fs_server(call, server); |
56ff9c83 | 1644 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
45222b9e | 1645 | } |
e8d6c554 DH |
1646 | |
1647 | /* | |
1648 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1649 | */ | |
d001648e | 1650 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
e8d6c554 DH |
1651 | { |
1652 | const __be32 *bp; | |
372ee163 | 1653 | int ret; |
e8d6c554 | 1654 | |
d001648e | 1655 | _enter("{%u}", call->unmarshall); |
e8d6c554 | 1656 | |
d001648e | 1657 | ret = afs_transfer_reply(call); |
372ee163 DH |
1658 | if (ret < 0) |
1659 | return ret; | |
e8d6c554 DH |
1660 | |
1661 | /* unmarshall the reply once we've received all of it */ | |
1662 | bp = call->buffer; | |
97e3043a | 1663 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
e8d6c554 DH |
1664 | |
1665 | _leave(" = 0 [done]"); | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | /* | |
1670 | * FS.SetLock operation type | |
1671 | */ | |
1672 | static const struct afs_call_type afs_RXFSSetLock = { | |
1673 | .name = "FS.SetLock", | |
1674 | .deliver = afs_deliver_fs_xxxx_lock, | |
e8d6c554 DH |
1675 | .destructor = afs_flat_call_destructor, |
1676 | }; | |
1677 | ||
1678 | /* | |
1679 | * FS.ExtendLock operation type | |
1680 | */ | |
1681 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1682 | .name = "FS.ExtendLock", | |
1683 | .deliver = afs_deliver_fs_xxxx_lock, | |
e8d6c554 DH |
1684 | .destructor = afs_flat_call_destructor, |
1685 | }; | |
1686 | ||
1687 | /* | |
1688 | * FS.ReleaseLock operation type | |
1689 | */ | |
1690 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1691 | .name = "FS.ReleaseLock", | |
1692 | .deliver = afs_deliver_fs_xxxx_lock, | |
e8d6c554 DH |
1693 | .destructor = afs_flat_call_destructor, |
1694 | }; | |
1695 | ||
1696 | /* | |
1697 | * get a lock on a file | |
1698 | */ | |
1699 | int afs_fs_set_lock(struct afs_server *server, | |
1700 | struct key *key, | |
1701 | struct afs_vnode *vnode, | |
1702 | afs_lock_type_t type, | |
56ff9c83 | 1703 | bool async) |
e8d6c554 DH |
1704 | { |
1705 | struct afs_call *call; | |
f044c884 | 1706 | struct afs_net *net = afs_v2net(vnode); |
e8d6c554 DH |
1707 | __be32 *bp; |
1708 | ||
1709 | _enter(""); | |
1710 | ||
f044c884 | 1711 | call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4); |
e8d6c554 DH |
1712 | if (!call) |
1713 | return -ENOMEM; | |
1714 | ||
1715 | call->key = key; | |
97e3043a | 1716 | call->reply[0] = vnode; |
e8d6c554 DH |
1717 | |
1718 | /* marshall the parameters */ | |
1719 | bp = call->request; | |
1720 | *bp++ = htonl(FSSETLOCK); | |
1721 | *bp++ = htonl(vnode->fid.vid); | |
1722 | *bp++ = htonl(vnode->fid.vnode); | |
1723 | *bp++ = htonl(vnode->fid.unique); | |
1724 | *bp++ = htonl(type); | |
1725 | ||
c435ee34 | 1726 | afs_use_fs_server(call, server); |
56ff9c83 | 1727 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 DH |
1728 | } |
1729 | ||
1730 | /* | |
1731 | * extend a lock on a file | |
1732 | */ | |
1733 | int afs_fs_extend_lock(struct afs_server *server, | |
1734 | struct key *key, | |
1735 | struct afs_vnode *vnode, | |
56ff9c83 | 1736 | bool async) |
e8d6c554 DH |
1737 | { |
1738 | struct afs_call *call; | |
f044c884 | 1739 | struct afs_net *net = afs_v2net(vnode); |
e8d6c554 DH |
1740 | __be32 *bp; |
1741 | ||
1742 | _enter(""); | |
1743 | ||
f044c884 | 1744 | call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4); |
e8d6c554 DH |
1745 | if (!call) |
1746 | return -ENOMEM; | |
1747 | ||
1748 | call->key = key; | |
97e3043a | 1749 | call->reply[0] = vnode; |
e8d6c554 DH |
1750 | |
1751 | /* marshall the parameters */ | |
1752 | bp = call->request; | |
1753 | *bp++ = htonl(FSEXTENDLOCK); | |
1754 | *bp++ = htonl(vnode->fid.vid); | |
1755 | *bp++ = htonl(vnode->fid.vnode); | |
1756 | *bp++ = htonl(vnode->fid.unique); | |
1757 | ||
c435ee34 | 1758 | afs_use_fs_server(call, server); |
56ff9c83 | 1759 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 DH |
1760 | } |
1761 | ||
1762 | /* | |
1763 | * release a lock on a file | |
1764 | */ | |
1765 | int afs_fs_release_lock(struct afs_server *server, | |
1766 | struct key *key, | |
1767 | struct afs_vnode *vnode, | |
56ff9c83 | 1768 | bool async) |
e8d6c554 DH |
1769 | { |
1770 | struct afs_call *call; | |
f044c884 | 1771 | struct afs_net *net = afs_v2net(vnode); |
e8d6c554 DH |
1772 | __be32 *bp; |
1773 | ||
1774 | _enter(""); | |
1775 | ||
f044c884 | 1776 | call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4); |
e8d6c554 DH |
1777 | if (!call) |
1778 | return -ENOMEM; | |
1779 | ||
1780 | call->key = key; | |
97e3043a | 1781 | call->reply[0] = vnode; |
e8d6c554 DH |
1782 | |
1783 | /* marshall the parameters */ | |
1784 | bp = call->request; | |
1785 | *bp++ = htonl(FSRELEASELOCK); | |
1786 | *bp++ = htonl(vnode->fid.vid); | |
1787 | *bp++ = htonl(vnode->fid.vnode); | |
1788 | *bp++ = htonl(vnode->fid.unique); | |
1789 | ||
c435ee34 DH |
1790 | afs_use_fs_server(call, server); |
1791 | return afs_make_call(&server->addr, call, GFP_NOFS, async); | |
1792 | } | |
1793 | ||
1794 | /* | |
1795 | * Deliver reply data to an FS.GiveUpAllCallBacks operation. | |
1796 | */ | |
1797 | static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call) | |
1798 | { | |
1799 | return afs_transfer_reply(call); | |
1800 | } | |
1801 | ||
1802 | /* | |
1803 | * FS.GiveUpAllCallBacks operation type | |
1804 | */ | |
1805 | static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = { | |
1806 | .name = "FS.GiveUpAllCallBacks", | |
1807 | .deliver = afs_deliver_fs_give_up_all_callbacks, | |
1808 | .destructor = afs_flat_call_destructor, | |
1809 | }; | |
1810 | ||
1811 | /* | |
1812 | * Flush all the callbacks we have on a server. | |
1813 | */ | |
1814 | int afs_fs_give_up_all_callbacks(struct afs_server *server, | |
1815 | struct key *key, | |
1816 | bool async) | |
1817 | { | |
1818 | struct afs_call *call; | |
1819 | __be32 *bp; | |
1820 | ||
1821 | _enter(""); | |
1822 | ||
1823 | call = afs_alloc_flat_call(server->net, &afs_RXFSGiveUpAllCallBacks, 2 * 4, 0); | |
1824 | if (!call) | |
1825 | return -ENOMEM; | |
1826 | ||
1827 | call->key = key; | |
1828 | ||
1829 | /* marshall the parameters */ | |
1830 | bp = call->request; | |
1831 | *bp++ = htonl(FSGIVEUPALLCALLBACKS); | |
1832 | ||
1833 | /* Can't take a ref on server */ | |
56ff9c83 | 1834 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 | 1835 | } |