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 | |
260a9803 DH |
19 | /* |
20 | * decode an AFSFid block | |
21 | */ | |
22 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
23 | { | |
24 | const __be32 *bp = *_bp; | |
25 | ||
26 | fid->vid = ntohl(*bp++); | |
27 | fid->vnode = ntohl(*bp++); | |
28 | fid->unique = ntohl(*bp++); | |
29 | *_bp = bp; | |
30 | } | |
31 | ||
1da177e4 | 32 | /* |
08e0e7c8 | 33 | * decode an AFSFetchStatus block |
1da177e4 | 34 | */ |
08e0e7c8 | 35 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 36 | struct afs_file_status *status, |
31143d5d DH |
37 | struct afs_vnode *vnode, |
38 | afs_dataversion_t *store_version) | |
1da177e4 | 39 | { |
31143d5d | 40 | afs_dataversion_t expected_version; |
08e0e7c8 DH |
41 | const __be32 *bp = *_bp; |
42 | umode_t mode; | |
260a9803 | 43 | u64 data_version, size; |
08e0e7c8 DH |
44 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
45 | ||
46 | #define EXTRACT(DST) \ | |
47 | do { \ | |
48 | u32 x = ntohl(*bp++); \ | |
49 | changed |= DST - x; \ | |
50 | DST = x; \ | |
51 | } while (0) | |
52 | ||
260a9803 DH |
53 | status->if_version = ntohl(*bp++); |
54 | EXTRACT(status->type); | |
55 | EXTRACT(status->nlink); | |
56 | size = ntohl(*bp++); | |
08e0e7c8 | 57 | data_version = ntohl(*bp++); |
260a9803 DH |
58 | EXTRACT(status->author); |
59 | EXTRACT(status->owner); | |
60 | EXTRACT(status->caller_access); /* call ticket dependent */ | |
61 | EXTRACT(status->anon_access); | |
62 | EXTRACT(status->mode); | |
63 | EXTRACT(status->parent.vnode); | |
64 | EXTRACT(status->parent.unique); | |
08e0e7c8 | 65 | bp++; /* seg size */ |
260a9803 DH |
66 | status->mtime_client = ntohl(*bp++); |
67 | status->mtime_server = ntohl(*bp++); | |
68 | EXTRACT(status->group); | |
08e0e7c8 DH |
69 | bp++; /* sync counter */ |
70 | data_version |= (u64) ntohl(*bp++) << 32; | |
e8d6c554 | 71 | EXTRACT(status->lock_count); |
260a9803 DH |
72 | size |= (u64) ntohl(*bp++) << 32; |
73 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
74 | *_bp = bp; |
75 | ||
260a9803 DH |
76 | if (size != status->size) { |
77 | status->size = size; | |
78 | changed |= true; | |
08e0e7c8 | 79 | } |
260a9803 | 80 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
81 | |
82 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
83 | status->mtime_client, status->mtime_server); |
84 | ||
85 | if (vnode) { | |
86 | status->parent.vid = vnode->fid.vid; | |
87 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
88 | _debug("vnode changed"); | |
89 | i_size_write(&vnode->vfs_inode, size); | |
90 | vnode->vfs_inode.i_uid = status->owner; | |
91 | vnode->vfs_inode.i_gid = status->group; | |
d6e43f75 | 92 | vnode->vfs_inode.i_generation = vnode->fid.unique; |
bfe86848 | 93 | set_nlink(&vnode->vfs_inode, status->nlink); |
260a9803 DH |
94 | |
95 | mode = vnode->vfs_inode.i_mode; | |
96 | mode &= ~S_IALLUGO; | |
97 | mode |= status->mode; | |
98 | barrier(); | |
99 | vnode->vfs_inode.i_mode = mode; | |
100 | } | |
101 | ||
102 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server; | |
103 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; | |
104 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
d6e43f75 | 105 | vnode->vfs_inode.i_version = data_version; |
260a9803 DH |
106 | } |
107 | ||
31143d5d DH |
108 | expected_version = status->data_version; |
109 | if (store_version) | |
110 | expected_version = *store_version; | |
111 | ||
112 | if (expected_version != data_version) { | |
260a9803 DH |
113 | status->data_version = data_version; |
114 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
115 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
116 | (unsigned long long) data_version, |
117 | vnode->fid.vid, vnode->fid.vnode); | |
260a9803 DH |
118 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
119 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); | |
120 | } | |
31143d5d DH |
121 | } else if (store_version) { |
122 | status->data_version = data_version; | |
1da177e4 | 123 | } |
ec26815a | 124 | } |
1da177e4 | 125 | |
1da177e4 | 126 | /* |
08e0e7c8 | 127 | * decode an AFSCallBack block |
1da177e4 | 128 | */ |
08e0e7c8 | 129 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
1da177e4 | 130 | { |
08e0e7c8 | 131 | const __be32 *bp = *_bp; |
1da177e4 | 132 | |
08e0e7c8 DH |
133 | vnode->cb_version = ntohl(*bp++); |
134 | vnode->cb_expiry = ntohl(*bp++); | |
135 | vnode->cb_type = ntohl(*bp++); | |
136 | vnode->cb_expires = vnode->cb_expiry + get_seconds(); | |
137 | *_bp = bp; | |
ec26815a | 138 | } |
1da177e4 | 139 | |
260a9803 DH |
140 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
141 | struct afs_callback *cb) | |
142 | { | |
143 | const __be32 *bp = *_bp; | |
144 | ||
145 | cb->version = ntohl(*bp++); | |
146 | cb->expiry = ntohl(*bp++); | |
147 | cb->type = ntohl(*bp++); | |
148 | *_bp = bp; | |
149 | } | |
150 | ||
1da177e4 | 151 | /* |
08e0e7c8 | 152 | * decode an AFSVolSync block |
1da177e4 | 153 | */ |
08e0e7c8 DH |
154 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
155 | struct afs_volsync *volsync) | |
1da177e4 | 156 | { |
08e0e7c8 | 157 | const __be32 *bp = *_bp; |
1da177e4 | 158 | |
08e0e7c8 DH |
159 | volsync->creation = ntohl(*bp++); |
160 | bp++; /* spare2 */ | |
161 | bp++; /* spare3 */ | |
162 | bp++; /* spare4 */ | |
163 | bp++; /* spare5 */ | |
164 | bp++; /* spare6 */ | |
165 | *_bp = bp; | |
166 | } | |
1da177e4 | 167 | |
31143d5d DH |
168 | /* |
169 | * encode the requested attributes into an AFSStoreStatus block | |
170 | */ | |
171 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
172 | { | |
173 | __be32 *bp = *_bp; | |
174 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
175 | ||
176 | mask = 0; | |
177 | if (attr->ia_valid & ATTR_MTIME) { | |
178 | mask |= AFS_SET_MTIME; | |
179 | mtime = attr->ia_mtime.tv_sec; | |
180 | } | |
181 | ||
182 | if (attr->ia_valid & ATTR_UID) { | |
183 | mask |= AFS_SET_OWNER; | |
184 | owner = attr->ia_uid; | |
185 | } | |
186 | ||
187 | if (attr->ia_valid & ATTR_GID) { | |
188 | mask |= AFS_SET_GROUP; | |
189 | group = attr->ia_gid; | |
190 | } | |
191 | ||
192 | if (attr->ia_valid & ATTR_MODE) { | |
193 | mask |= AFS_SET_MODE; | |
194 | mode = attr->ia_mode & S_IALLUGO; | |
195 | } | |
196 | ||
197 | *bp++ = htonl(mask); | |
198 | *bp++ = htonl(mtime); | |
199 | *bp++ = htonl(owner); | |
200 | *bp++ = htonl(group); | |
201 | *bp++ = htonl(mode); | |
202 | *bp++ = 0; /* segment size */ | |
203 | *_bp = bp; | |
204 | } | |
205 | ||
45222b9e DH |
206 | /* |
207 | * decode an AFSFetchVolumeStatus block | |
208 | */ | |
209 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, | |
210 | struct afs_volume_status *vs) | |
211 | { | |
212 | const __be32 *bp = *_bp; | |
213 | ||
214 | vs->vid = ntohl(*bp++); | |
215 | vs->parent_id = ntohl(*bp++); | |
216 | vs->online = ntohl(*bp++); | |
217 | vs->in_service = ntohl(*bp++); | |
218 | vs->blessed = ntohl(*bp++); | |
219 | vs->needs_salvage = ntohl(*bp++); | |
220 | vs->type = ntohl(*bp++); | |
221 | vs->min_quota = ntohl(*bp++); | |
222 | vs->max_quota = ntohl(*bp++); | |
223 | vs->blocks_in_use = ntohl(*bp++); | |
224 | vs->part_blocks_avail = ntohl(*bp++); | |
225 | vs->part_max_blocks = ntohl(*bp++); | |
226 | *_bp = bp; | |
227 | } | |
228 | ||
08e0e7c8 DH |
229 | /* |
230 | * deliver reply data to an FS.FetchStatus | |
231 | */ | |
232 | static int afs_deliver_fs_fetch_status(struct afs_call *call, | |
233 | struct sk_buff *skb, bool last) | |
234 | { | |
260a9803 | 235 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 236 | const __be32 *bp; |
1da177e4 | 237 | |
08e0e7c8 | 238 | _enter(",,%u", last); |
1da177e4 | 239 | |
08e0e7c8 DH |
240 | afs_transfer_reply(call, skb); |
241 | if (!last) | |
242 | return 0; | |
1da177e4 | 243 | |
08e0e7c8 DH |
244 | if (call->reply_size != call->reply_max) |
245 | return -EBADMSG; | |
1da177e4 | 246 | |
08e0e7c8 DH |
247 | /* unmarshall the reply once we've received all of it */ |
248 | bp = call->buffer; | |
31143d5d | 249 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 250 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
251 | if (call->reply2) |
252 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 253 | |
08e0e7c8 DH |
254 | _leave(" = 0 [done]"); |
255 | return 0; | |
ec26815a | 256 | } |
08e0e7c8 DH |
257 | |
258 | /* | |
259 | * FS.FetchStatus operation type | |
260 | */ | |
261 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 262 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
263 | .deliver = afs_deliver_fs_fetch_status, |
264 | .abort_to_error = afs_abort_to_error, | |
265 | .destructor = afs_flat_call_destructor, | |
266 | }; | |
1da177e4 | 267 | |
1da177e4 LT |
268 | /* |
269 | * fetch the status information for a file | |
270 | */ | |
08e0e7c8 | 271 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 272 | struct key *key, |
08e0e7c8 DH |
273 | struct afs_vnode *vnode, |
274 | struct afs_volsync *volsync, | |
275 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 276 | { |
08e0e7c8 | 277 | struct afs_call *call; |
1da177e4 LT |
278 | __be32 *bp; |
279 | ||
416351f2 | 280 | _enter(",%x,{%x:%u},,", |
260a9803 | 281 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 282 | |
260a9803 | 283 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
284 | if (!call) |
285 | return -ENOMEM; | |
1da177e4 | 286 | |
00d3b7a4 | 287 | call->key = key; |
08e0e7c8 DH |
288 | call->reply = vnode; |
289 | call->reply2 = volsync; | |
290 | call->service_id = FS_SERVICE; | |
291 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
292 | |
293 | /* marshall the parameters */ | |
08e0e7c8 | 294 | bp = call->request; |
1da177e4 LT |
295 | bp[0] = htonl(FSFETCHSTATUS); |
296 | bp[1] = htonl(vnode->fid.vid); | |
297 | bp[2] = htonl(vnode->fid.vnode); | |
298 | bp[3] = htonl(vnode->fid.unique); | |
299 | ||
08e0e7c8 | 300 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 301 | } |
1da177e4 | 302 | |
1da177e4 | 303 | /* |
08e0e7c8 | 304 | * deliver reply data to an FS.FetchData |
1da177e4 | 305 | */ |
08e0e7c8 DH |
306 | static int afs_deliver_fs_fetch_data(struct afs_call *call, |
307 | struct sk_buff *skb, bool last) | |
1da177e4 | 308 | { |
260a9803 | 309 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 DH |
310 | const __be32 *bp; |
311 | struct page *page; | |
312 | void *buffer; | |
1da177e4 | 313 | int ret; |
1da177e4 | 314 | |
08e0e7c8 DH |
315 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
316 | ||
317 | switch (call->unmarshall) { | |
318 | case 0: | |
319 | call->offset = 0; | |
320 | call->unmarshall++; | |
b9b1f8d5 DH |
321 | if (call->operation_ID != FSFETCHDATA64) { |
322 | call->unmarshall++; | |
323 | goto no_msw; | |
324 | } | |
08e0e7c8 | 325 | |
b9b1f8d5 DH |
326 | /* extract the upper part of the returned data length of an |
327 | * FSFETCHDATA64 op (which should always be 0 using this | |
328 | * client) */ | |
08e0e7c8 | 329 | case 1: |
b9b1f8d5 DH |
330 | _debug("extract data length (MSW)"); |
331 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
332 | switch (ret) { | |
333 | case 0: break; | |
334 | case -EAGAIN: return 0; | |
335 | default: return ret; | |
336 | } | |
337 | ||
338 | call->count = ntohl(call->tmp); | |
339 | _debug("DATA length MSW: %u", call->count); | |
340 | if (call->count > 0) | |
341 | return -EBADMSG; | |
342 | call->offset = 0; | |
343 | call->unmarshall++; | |
344 | ||
345 | no_msw: | |
346 | /* extract the returned data length */ | |
347 | case 2: | |
08e0e7c8 DH |
348 | _debug("extract data length"); |
349 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
350 | switch (ret) { | |
351 | case 0: break; | |
352 | case -EAGAIN: return 0; | |
353 | default: return ret; | |
354 | } | |
1da177e4 | 355 | |
08e0e7c8 DH |
356 | call->count = ntohl(call->tmp); |
357 | _debug("DATA length: %u", call->count); | |
358 | if (call->count > PAGE_SIZE) | |
359 | return -EBADMSG; | |
360 | call->offset = 0; | |
361 | call->unmarshall++; | |
362 | ||
08e0e7c8 | 363 | /* extract the returned data */ |
b9b1f8d5 | 364 | case 3: |
08e0e7c8 | 365 | _debug("extract data"); |
416351f2 DH |
366 | if (call->count > 0) { |
367 | page = call->reply3; | |
da4aa36d | 368 | buffer = kmap_atomic(page); |
416351f2 DH |
369 | ret = afs_extract_data(call, skb, last, buffer, |
370 | call->count); | |
da4aa36d | 371 | kunmap_atomic(buffer); |
416351f2 DH |
372 | switch (ret) { |
373 | case 0: break; | |
374 | case -EAGAIN: return 0; | |
375 | default: return ret; | |
376 | } | |
08e0e7c8 | 377 | } |
1da177e4 | 378 | |
08e0e7c8 DH |
379 | call->offset = 0; |
380 | call->unmarshall++; | |
1da177e4 | 381 | |
08e0e7c8 | 382 | /* extract the metadata */ |
b9b1f8d5 | 383 | case 4: |
260a9803 DH |
384 | ret = afs_extract_data(call, skb, last, call->buffer, |
385 | (21 + 3 + 6) * 4); | |
08e0e7c8 DH |
386 | switch (ret) { |
387 | case 0: break; | |
388 | case -EAGAIN: return 0; | |
389 | default: return ret; | |
390 | } | |
391 | ||
392 | bp = call->buffer; | |
31143d5d | 393 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 394 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
395 | if (call->reply2) |
396 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
397 | ||
398 | call->offset = 0; | |
399 | call->unmarshall++; | |
1da177e4 | 400 | |
b9b1f8d5 | 401 | case 5: |
08e0e7c8 DH |
402 | _debug("trailer"); |
403 | if (skb->len != 0) | |
404 | return -EBADMSG; | |
405 | break; | |
1da177e4 LT |
406 | } |
407 | ||
08e0e7c8 DH |
408 | if (!last) |
409 | return 0; | |
410 | ||
416351f2 DH |
411 | if (call->count < PAGE_SIZE) { |
412 | _debug("clear"); | |
413 | page = call->reply3; | |
da4aa36d | 414 | buffer = kmap_atomic(page); |
416351f2 | 415 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); |
da4aa36d | 416 | kunmap_atomic(buffer); |
416351f2 DH |
417 | } |
418 | ||
08e0e7c8 DH |
419 | _leave(" = 0 [done]"); |
420 | return 0; | |
ec26815a | 421 | } |
1da177e4 | 422 | |
1da177e4 | 423 | /* |
08e0e7c8 | 424 | * FS.FetchData operation type |
1da177e4 | 425 | */ |
08e0e7c8 | 426 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 427 | .name = "FS.FetchData", |
08e0e7c8 DH |
428 | .deliver = afs_deliver_fs_fetch_data, |
429 | .abort_to_error = afs_abort_to_error, | |
430 | .destructor = afs_flat_call_destructor, | |
431 | }; | |
432 | ||
b9b1f8d5 DH |
433 | static const struct afs_call_type afs_RXFSFetchData64 = { |
434 | .name = "FS.FetchData64", | |
435 | .deliver = afs_deliver_fs_fetch_data, | |
436 | .abort_to_error = afs_abort_to_error, | |
437 | .destructor = afs_flat_call_destructor, | |
438 | }; | |
439 | ||
440 | /* | |
441 | * fetch data from a very large file | |
442 | */ | |
443 | static int afs_fs_fetch_data64(struct afs_server *server, | |
444 | struct key *key, | |
445 | struct afs_vnode *vnode, | |
446 | off_t offset, size_t length, | |
447 | struct page *buffer, | |
448 | const struct afs_wait_mode *wait_mode) | |
449 | { | |
450 | struct afs_call *call; | |
451 | __be32 *bp; | |
452 | ||
453 | _enter(""); | |
454 | ||
455 | ASSERTCMP(length, <, ULONG_MAX); | |
456 | ||
457 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); | |
458 | if (!call) | |
459 | return -ENOMEM; | |
460 | ||
461 | call->key = key; | |
462 | call->reply = vnode; | |
463 | call->reply2 = NULL; /* volsync */ | |
464 | call->reply3 = buffer; | |
465 | call->service_id = FS_SERVICE; | |
466 | call->port = htons(AFS_FS_PORT); | |
467 | call->operation_ID = FSFETCHDATA64; | |
468 | ||
469 | /* marshall the parameters */ | |
470 | bp = call->request; | |
471 | bp[0] = htonl(FSFETCHDATA64); | |
472 | bp[1] = htonl(vnode->fid.vid); | |
473 | bp[2] = htonl(vnode->fid.vnode); | |
474 | bp[3] = htonl(vnode->fid.unique); | |
475 | bp[4] = htonl(upper_32_bits(offset)); | |
476 | bp[5] = htonl((u32) offset); | |
477 | bp[6] = 0; | |
478 | bp[7] = htonl((u32) length); | |
479 | ||
480 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
481 | } | |
482 | ||
08e0e7c8 DH |
483 | /* |
484 | * fetch data from a file | |
485 | */ | |
486 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 487 | struct key *key, |
08e0e7c8 DH |
488 | struct afs_vnode *vnode, |
489 | off_t offset, size_t length, | |
490 | struct page *buffer, | |
08e0e7c8 | 491 | const struct afs_wait_mode *wait_mode) |
1da177e4 | 492 | { |
08e0e7c8 | 493 | struct afs_call *call; |
1da177e4 LT |
494 | __be32 *bp; |
495 | ||
b9b1f8d5 DH |
496 | if (upper_32_bits(offset) || upper_32_bits(offset + length)) |
497 | return afs_fs_fetch_data64(server, key, vnode, offset, length, | |
498 | buffer, wait_mode); | |
499 | ||
08e0e7c8 | 500 | _enter(""); |
1da177e4 | 501 | |
260a9803 | 502 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
503 | if (!call) |
504 | return -ENOMEM; | |
1da177e4 | 505 | |
00d3b7a4 | 506 | call->key = key; |
08e0e7c8 | 507 | call->reply = vnode; |
260a9803 | 508 | call->reply2 = NULL; /* volsync */ |
08e0e7c8 DH |
509 | call->reply3 = buffer; |
510 | call->service_id = FS_SERVICE; | |
511 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 512 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
513 | |
514 | /* marshall the parameters */ | |
08e0e7c8 DH |
515 | bp = call->request; |
516 | bp[0] = htonl(FSFETCHDATA); | |
517 | bp[1] = htonl(vnode->fid.vid); | |
518 | bp[2] = htonl(vnode->fid.vnode); | |
519 | bp[3] = htonl(vnode->fid.unique); | |
520 | bp[4] = htonl(offset); | |
521 | bp[5] = htonl(length); | |
1da177e4 | 522 | |
08e0e7c8 DH |
523 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
524 | } | |
1da177e4 | 525 | |
08e0e7c8 DH |
526 | /* |
527 | * deliver reply data to an FS.GiveUpCallBacks | |
528 | */ | |
529 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call, | |
530 | struct sk_buff *skb, bool last) | |
531 | { | |
532 | _enter(",{%u},%d", skb->len, last); | |
1da177e4 | 533 | |
08e0e7c8 DH |
534 | if (skb->len > 0) |
535 | return -EBADMSG; /* shouldn't be any reply data */ | |
536 | return 0; | |
ec26815a | 537 | } |
1da177e4 | 538 | |
1da177e4 | 539 | /* |
08e0e7c8 DH |
540 | * FS.GiveUpCallBacks operation type |
541 | */ | |
542 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 543 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
544 | .deliver = afs_deliver_fs_give_up_callbacks, |
545 | .abort_to_error = afs_abort_to_error, | |
546 | .destructor = afs_flat_call_destructor, | |
547 | }; | |
548 | ||
549 | /* | |
550 | * give up a set of callbacks | |
551 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 552 | */ |
08e0e7c8 DH |
553 | int afs_fs_give_up_callbacks(struct afs_server *server, |
554 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 555 | { |
08e0e7c8 DH |
556 | struct afs_call *call; |
557 | size_t ncallbacks; | |
558 | __be32 *bp, *tp; | |
559 | int loop; | |
1da177e4 | 560 | |
08e0e7c8 DH |
561 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
562 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 563 | |
08e0e7c8 | 564 | _enter("{%zu},", ncallbacks); |
1da177e4 | 565 | |
08e0e7c8 DH |
566 | if (ncallbacks == 0) |
567 | return 0; | |
568 | if (ncallbacks > AFSCBMAX) | |
569 | ncallbacks = AFSCBMAX; | |
1da177e4 | 570 | |
08e0e7c8 | 571 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 572 | |
08e0e7c8 DH |
573 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
574 | 12 + ncallbacks * 6 * 4, 0); | |
575 | if (!call) | |
576 | return -ENOMEM; | |
577 | ||
578 | call->service_id = FS_SERVICE; | |
579 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
580 | |
581 | /* marshall the parameters */ | |
08e0e7c8 DH |
582 | bp = call->request; |
583 | tp = bp + 2 + ncallbacks * 3; | |
584 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
585 | *bp++ = htonl(ncallbacks); | |
586 | *tp++ = htonl(ncallbacks); | |
587 | ||
588 | atomic_sub(ncallbacks, &server->cb_break_n); | |
589 | for (loop = ncallbacks; loop > 0; loop--) { | |
590 | struct afs_callback *cb = | |
591 | &server->cb_break[server->cb_break_tail]; | |
592 | ||
593 | *bp++ = htonl(cb->fid.vid); | |
594 | *bp++ = htonl(cb->fid.vnode); | |
595 | *bp++ = htonl(cb->fid.unique); | |
596 | *tp++ = htonl(cb->version); | |
597 | *tp++ = htonl(cb->expiry); | |
598 | *tp++ = htonl(cb->type); | |
599 | smp_mb(); | |
600 | server->cb_break_tail = | |
601 | (server->cb_break_tail + 1) & | |
602 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
603 | } |
604 | ||
08e0e7c8 DH |
605 | ASSERT(ncallbacks > 0); |
606 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 607 | |
08e0e7c8 | 608 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 609 | } |
260a9803 DH |
610 | |
611 | /* | |
612 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
613 | */ | |
614 | static int afs_deliver_fs_create_vnode(struct afs_call *call, | |
615 | struct sk_buff *skb, bool last) | |
616 | { | |
617 | struct afs_vnode *vnode = call->reply; | |
618 | const __be32 *bp; | |
619 | ||
620 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
621 | ||
622 | afs_transfer_reply(call, skb); | |
623 | if (!last) | |
624 | return 0; | |
625 | ||
626 | if (call->reply_size != call->reply_max) | |
627 | return -EBADMSG; | |
628 | ||
629 | /* unmarshall the reply once we've received all of it */ | |
630 | bp = call->buffer; | |
631 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
632 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
633 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
634 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
635 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
636 | ||
637 | _leave(" = 0 [done]"); | |
638 | return 0; | |
639 | } | |
640 | ||
641 | /* | |
642 | * FS.CreateFile and FS.MakeDir operation type | |
643 | */ | |
644 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
645 | .name = "FS.CreateXXXX", | |
646 | .deliver = afs_deliver_fs_create_vnode, | |
647 | .abort_to_error = afs_abort_to_error, | |
648 | .destructor = afs_flat_call_destructor, | |
649 | }; | |
650 | ||
651 | /* | |
652 | * create a file or make a directory | |
653 | */ | |
654 | int afs_fs_create(struct afs_server *server, | |
655 | struct key *key, | |
656 | struct afs_vnode *vnode, | |
657 | const char *name, | |
658 | umode_t mode, | |
659 | struct afs_fid *newfid, | |
660 | struct afs_file_status *newstatus, | |
661 | struct afs_callback *newcb, | |
662 | const struct afs_wait_mode *wait_mode) | |
663 | { | |
664 | struct afs_call *call; | |
665 | size_t namesz, reqsz, padsz; | |
666 | __be32 *bp; | |
667 | ||
668 | _enter(""); | |
669 | ||
670 | namesz = strlen(name); | |
671 | padsz = (4 - (namesz & 3)) & 3; | |
672 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
673 | ||
674 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
675 | (3 + 21 + 21 + 3 + 6) * 4); | |
676 | if (!call) | |
677 | return -ENOMEM; | |
678 | ||
679 | call->key = key; | |
680 | call->reply = vnode; | |
681 | call->reply2 = newfid; | |
682 | call->reply3 = newstatus; | |
683 | call->reply4 = newcb; | |
684 | call->service_id = FS_SERVICE; | |
685 | call->port = htons(AFS_FS_PORT); | |
686 | ||
687 | /* marshall the parameters */ | |
688 | bp = call->request; | |
689 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
690 | *bp++ = htonl(vnode->fid.vid); | |
691 | *bp++ = htonl(vnode->fid.vnode); | |
692 | *bp++ = htonl(vnode->fid.unique); | |
693 | *bp++ = htonl(namesz); | |
694 | memcpy(bp, name, namesz); | |
695 | bp = (void *) bp + namesz; | |
696 | if (padsz > 0) { | |
697 | memset(bp, 0, padsz); | |
698 | bp = (void *) bp + padsz; | |
699 | } | |
700 | *bp++ = htonl(AFS_SET_MODE); | |
701 | *bp++ = 0; /* mtime */ | |
702 | *bp++ = 0; /* owner */ | |
703 | *bp++ = 0; /* group */ | |
704 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
705 | *bp++ = 0; /* segment size */ | |
706 | ||
707 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
708 | } | |
709 | ||
710 | /* | |
711 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
712 | */ | |
713 | static int afs_deliver_fs_remove(struct afs_call *call, | |
714 | struct sk_buff *skb, bool last) | |
715 | { | |
716 | struct afs_vnode *vnode = call->reply; | |
717 | const __be32 *bp; | |
718 | ||
719 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
720 | ||
721 | afs_transfer_reply(call, skb); | |
722 | if (!last) | |
723 | return 0; | |
724 | ||
725 | if (call->reply_size != call->reply_max) | |
726 | return -EBADMSG; | |
727 | ||
728 | /* unmarshall the reply once we've received all of it */ | |
729 | bp = call->buffer; | |
31143d5d | 730 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
731 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
732 | ||
733 | _leave(" = 0 [done]"); | |
734 | return 0; | |
735 | } | |
736 | ||
737 | /* | |
738 | * FS.RemoveDir/FS.RemoveFile operation type | |
739 | */ | |
740 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
741 | .name = "FS.RemoveXXXX", | |
742 | .deliver = afs_deliver_fs_remove, | |
743 | .abort_to_error = afs_abort_to_error, | |
744 | .destructor = afs_flat_call_destructor, | |
745 | }; | |
746 | ||
747 | /* | |
748 | * remove a file or directory | |
749 | */ | |
750 | int afs_fs_remove(struct afs_server *server, | |
751 | struct key *key, | |
752 | struct afs_vnode *vnode, | |
753 | const char *name, | |
754 | bool isdir, | |
755 | const struct afs_wait_mode *wait_mode) | |
756 | { | |
757 | struct afs_call *call; | |
758 | size_t namesz, reqsz, padsz; | |
759 | __be32 *bp; | |
760 | ||
761 | _enter(""); | |
762 | ||
763 | namesz = strlen(name); | |
764 | padsz = (4 - (namesz & 3)) & 3; | |
765 | reqsz = (5 * 4) + namesz + padsz; | |
766 | ||
767 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
768 | if (!call) | |
769 | return -ENOMEM; | |
770 | ||
771 | call->key = key; | |
772 | call->reply = vnode; | |
773 | call->service_id = FS_SERVICE; | |
774 | call->port = htons(AFS_FS_PORT); | |
775 | ||
776 | /* marshall the parameters */ | |
777 | bp = call->request; | |
778 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
779 | *bp++ = htonl(vnode->fid.vid); | |
780 | *bp++ = htonl(vnode->fid.vnode); | |
781 | *bp++ = htonl(vnode->fid.unique); | |
782 | *bp++ = htonl(namesz); | |
783 | memcpy(bp, name, namesz); | |
784 | bp = (void *) bp + namesz; | |
785 | if (padsz > 0) { | |
786 | memset(bp, 0, padsz); | |
787 | bp = (void *) bp + padsz; | |
788 | } | |
789 | ||
790 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
791 | } | |
792 | ||
793 | /* | |
794 | * deliver reply data to an FS.Link | |
795 | */ | |
796 | static int afs_deliver_fs_link(struct afs_call *call, | |
797 | struct sk_buff *skb, bool last) | |
798 | { | |
799 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
800 | const __be32 *bp; | |
801 | ||
802 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
803 | ||
804 | afs_transfer_reply(call, skb); | |
805 | if (!last) | |
806 | return 0; | |
807 | ||
808 | if (call->reply_size != call->reply_max) | |
809 | return -EBADMSG; | |
810 | ||
811 | /* unmarshall the reply once we've received all of it */ | |
812 | bp = call->buffer; | |
31143d5d DH |
813 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
814 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
815 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
816 | ||
817 | _leave(" = 0 [done]"); | |
818 | return 0; | |
819 | } | |
820 | ||
821 | /* | |
822 | * FS.Link operation type | |
823 | */ | |
824 | static const struct afs_call_type afs_RXFSLink = { | |
825 | .name = "FS.Link", | |
826 | .deliver = afs_deliver_fs_link, | |
827 | .abort_to_error = afs_abort_to_error, | |
828 | .destructor = afs_flat_call_destructor, | |
829 | }; | |
830 | ||
831 | /* | |
832 | * make a hard link | |
833 | */ | |
834 | int afs_fs_link(struct afs_server *server, | |
835 | struct key *key, | |
836 | struct afs_vnode *dvnode, | |
837 | struct afs_vnode *vnode, | |
838 | const char *name, | |
839 | const struct afs_wait_mode *wait_mode) | |
840 | { | |
841 | struct afs_call *call; | |
842 | size_t namesz, reqsz, padsz; | |
843 | __be32 *bp; | |
844 | ||
845 | _enter(""); | |
846 | ||
847 | namesz = strlen(name); | |
848 | padsz = (4 - (namesz & 3)) & 3; | |
849 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
850 | ||
851 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
852 | if (!call) | |
853 | return -ENOMEM; | |
854 | ||
855 | call->key = key; | |
856 | call->reply = dvnode; | |
857 | call->reply2 = vnode; | |
858 | call->service_id = FS_SERVICE; | |
859 | call->port = htons(AFS_FS_PORT); | |
860 | ||
861 | /* marshall the parameters */ | |
862 | bp = call->request; | |
863 | *bp++ = htonl(FSLINK); | |
864 | *bp++ = htonl(dvnode->fid.vid); | |
865 | *bp++ = htonl(dvnode->fid.vnode); | |
866 | *bp++ = htonl(dvnode->fid.unique); | |
867 | *bp++ = htonl(namesz); | |
868 | memcpy(bp, name, namesz); | |
869 | bp = (void *) bp + namesz; | |
870 | if (padsz > 0) { | |
871 | memset(bp, 0, padsz); | |
872 | bp = (void *) bp + padsz; | |
873 | } | |
874 | *bp++ = htonl(vnode->fid.vid); | |
875 | *bp++ = htonl(vnode->fid.vnode); | |
876 | *bp++ = htonl(vnode->fid.unique); | |
877 | ||
878 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
879 | } | |
880 | ||
881 | /* | |
882 | * deliver reply data to an FS.Symlink | |
883 | */ | |
884 | static int afs_deliver_fs_symlink(struct afs_call *call, | |
885 | struct sk_buff *skb, bool last) | |
886 | { | |
887 | struct afs_vnode *vnode = call->reply; | |
888 | const __be32 *bp; | |
889 | ||
890 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
891 | ||
892 | afs_transfer_reply(call, skb); | |
893 | if (!last) | |
894 | return 0; | |
895 | ||
896 | if (call->reply_size != call->reply_max) | |
897 | return -EBADMSG; | |
898 | ||
899 | /* unmarshall the reply once we've received all of it */ | |
900 | bp = call->buffer; | |
901 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
902 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
903 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
904 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
905 | ||
906 | _leave(" = 0 [done]"); | |
907 | return 0; | |
908 | } | |
909 | ||
910 | /* | |
911 | * FS.Symlink operation type | |
912 | */ | |
913 | static const struct afs_call_type afs_RXFSSymlink = { | |
914 | .name = "FS.Symlink", | |
915 | .deliver = afs_deliver_fs_symlink, | |
916 | .abort_to_error = afs_abort_to_error, | |
917 | .destructor = afs_flat_call_destructor, | |
918 | }; | |
919 | ||
920 | /* | |
921 | * create a symbolic link | |
922 | */ | |
923 | int afs_fs_symlink(struct afs_server *server, | |
924 | struct key *key, | |
925 | struct afs_vnode *vnode, | |
926 | const char *name, | |
927 | const char *contents, | |
928 | struct afs_fid *newfid, | |
929 | struct afs_file_status *newstatus, | |
930 | const struct afs_wait_mode *wait_mode) | |
931 | { | |
932 | struct afs_call *call; | |
933 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
934 | __be32 *bp; | |
935 | ||
936 | _enter(""); | |
937 | ||
938 | namesz = strlen(name); | |
939 | padsz = (4 - (namesz & 3)) & 3; | |
940 | ||
941 | c_namesz = strlen(contents); | |
942 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
943 | ||
944 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
945 | ||
946 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
947 | (3 + 21 + 21 + 6) * 4); | |
948 | if (!call) | |
949 | return -ENOMEM; | |
950 | ||
951 | call->key = key; | |
952 | call->reply = vnode; | |
953 | call->reply2 = newfid; | |
954 | call->reply3 = newstatus; | |
955 | call->service_id = FS_SERVICE; | |
956 | call->port = htons(AFS_FS_PORT); | |
957 | ||
958 | /* marshall the parameters */ | |
959 | bp = call->request; | |
960 | *bp++ = htonl(FSSYMLINK); | |
961 | *bp++ = htonl(vnode->fid.vid); | |
962 | *bp++ = htonl(vnode->fid.vnode); | |
963 | *bp++ = htonl(vnode->fid.unique); | |
964 | *bp++ = htonl(namesz); | |
965 | memcpy(bp, name, namesz); | |
966 | bp = (void *) bp + namesz; | |
967 | if (padsz > 0) { | |
968 | memset(bp, 0, padsz); | |
969 | bp = (void *) bp + padsz; | |
970 | } | |
971 | *bp++ = htonl(c_namesz); | |
972 | memcpy(bp, contents, c_namesz); | |
973 | bp = (void *) bp + c_namesz; | |
974 | if (c_padsz > 0) { | |
975 | memset(bp, 0, c_padsz); | |
976 | bp = (void *) bp + c_padsz; | |
977 | } | |
978 | *bp++ = htonl(AFS_SET_MODE); | |
979 | *bp++ = 0; /* mtime */ | |
980 | *bp++ = 0; /* owner */ | |
981 | *bp++ = 0; /* group */ | |
982 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
983 | *bp++ = 0; /* segment size */ | |
984 | ||
985 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
986 | } | |
987 | ||
988 | /* | |
989 | * deliver reply data to an FS.Rename | |
990 | */ | |
991 | static int afs_deliver_fs_rename(struct afs_call *call, | |
992 | struct sk_buff *skb, bool last) | |
993 | { | |
994 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
995 | const __be32 *bp; | |
996 | ||
997 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
998 | ||
999 | afs_transfer_reply(call, skb); | |
1000 | if (!last) | |
1001 | return 0; | |
1002 | ||
1003 | if (call->reply_size != call->reply_max) | |
1004 | return -EBADMSG; | |
1005 | ||
1006 | /* unmarshall the reply once we've received all of it */ | |
1007 | bp = call->buffer; | |
31143d5d | 1008 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 1009 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
1010 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
1011 | NULL); | |
260a9803 DH |
1012 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
1013 | ||
1014 | _leave(" = 0 [done]"); | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * FS.Rename operation type | |
1020 | */ | |
1021 | static const struct afs_call_type afs_RXFSRename = { | |
1022 | .name = "FS.Rename", | |
1023 | .deliver = afs_deliver_fs_rename, | |
1024 | .abort_to_error = afs_abort_to_error, | |
1025 | .destructor = afs_flat_call_destructor, | |
1026 | }; | |
1027 | ||
1028 | /* | |
1029 | * create a symbolic link | |
1030 | */ | |
1031 | int afs_fs_rename(struct afs_server *server, | |
1032 | struct key *key, | |
1033 | struct afs_vnode *orig_dvnode, | |
1034 | const char *orig_name, | |
1035 | struct afs_vnode *new_dvnode, | |
1036 | const char *new_name, | |
1037 | const struct afs_wait_mode *wait_mode) | |
1038 | { | |
1039 | struct afs_call *call; | |
1040 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1041 | __be32 *bp; | |
1042 | ||
1043 | _enter(""); | |
1044 | ||
1045 | o_namesz = strlen(orig_name); | |
1046 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1047 | ||
1048 | n_namesz = strlen(new_name); | |
1049 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1050 | ||
1051 | reqsz = (4 * 4) + | |
1052 | 4 + o_namesz + o_padsz + | |
1053 | (3 * 4) + | |
1054 | 4 + n_namesz + n_padsz; | |
1055 | ||
1056 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1057 | if (!call) | |
1058 | return -ENOMEM; | |
1059 | ||
1060 | call->key = key; | |
1061 | call->reply = orig_dvnode; | |
1062 | call->reply2 = new_dvnode; | |
1063 | call->service_id = FS_SERVICE; | |
1064 | call->port = htons(AFS_FS_PORT); | |
1065 | ||
1066 | /* marshall the parameters */ | |
1067 | bp = call->request; | |
1068 | *bp++ = htonl(FSRENAME); | |
1069 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1070 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1071 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1072 | *bp++ = htonl(o_namesz); | |
1073 | memcpy(bp, orig_name, o_namesz); | |
1074 | bp = (void *) bp + o_namesz; | |
1075 | if (o_padsz > 0) { | |
1076 | memset(bp, 0, o_padsz); | |
1077 | bp = (void *) bp + o_padsz; | |
1078 | } | |
1079 | ||
1080 | *bp++ = htonl(new_dvnode->fid.vid); | |
1081 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1082 | *bp++ = htonl(new_dvnode->fid.unique); | |
1083 | *bp++ = htonl(n_namesz); | |
1084 | memcpy(bp, new_name, n_namesz); | |
1085 | bp = (void *) bp + n_namesz; | |
1086 | if (n_padsz > 0) { | |
1087 | memset(bp, 0, n_padsz); | |
1088 | bp = (void *) bp + n_padsz; | |
1089 | } | |
1090 | ||
1091 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1092 | } | |
31143d5d DH |
1093 | |
1094 | /* | |
1095 | * deliver reply data to an FS.StoreData | |
1096 | */ | |
1097 | static int afs_deliver_fs_store_data(struct afs_call *call, | |
1098 | struct sk_buff *skb, bool last) | |
1099 | { | |
1100 | struct afs_vnode *vnode = call->reply; | |
1101 | const __be32 *bp; | |
1102 | ||
1103 | _enter(",,%u", last); | |
1104 | ||
1105 | afs_transfer_reply(call, skb); | |
1106 | if (!last) { | |
1107 | _leave(" = 0 [more]"); | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | if (call->reply_size != call->reply_max) { | |
1112 | _leave(" = -EBADMSG [%u != %u]", | |
1113 | call->reply_size, call->reply_max); | |
1114 | return -EBADMSG; | |
1115 | } | |
1116 | ||
1117 | /* unmarshall the reply once we've received all of it */ | |
1118 | bp = call->buffer; | |
1119 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1120 | &call->store_version); | |
1121 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1122 | ||
1123 | afs_pages_written_back(vnode, call); | |
1124 | ||
1125 | _leave(" = 0 [done]"); | |
1126 | return 0; | |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * FS.StoreData operation type | |
1131 | */ | |
1132 | static const struct afs_call_type afs_RXFSStoreData = { | |
1133 | .name = "FS.StoreData", | |
1134 | .deliver = afs_deliver_fs_store_data, | |
1135 | .abort_to_error = afs_abort_to_error, | |
1136 | .destructor = afs_flat_call_destructor, | |
1137 | }; | |
1138 | ||
b9b1f8d5 DH |
1139 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1140 | .name = "FS.StoreData64", | |
1141 | .deliver = afs_deliver_fs_store_data, | |
1142 | .abort_to_error = afs_abort_to_error, | |
1143 | .destructor = afs_flat_call_destructor, | |
1144 | }; | |
1145 | ||
1146 | /* | |
1147 | * store a set of pages to a very large file | |
1148 | */ | |
1149 | static int afs_fs_store_data64(struct afs_server *server, | |
1150 | struct afs_writeback *wb, | |
1151 | pgoff_t first, pgoff_t last, | |
1152 | unsigned offset, unsigned to, | |
1153 | loff_t size, loff_t pos, loff_t i_size, | |
1154 | const struct afs_wait_mode *wait_mode) | |
1155 | { | |
1156 | struct afs_vnode *vnode = wb->vnode; | |
1157 | struct afs_call *call; | |
1158 | __be32 *bp; | |
1159 | ||
1160 | _enter(",%x,{%x:%u},,", | |
1161 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1162 | ||
1163 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1164 | (4 + 6 + 3 * 2) * 4, | |
1165 | (21 + 6) * 4); | |
1166 | if (!call) | |
1167 | return -ENOMEM; | |
1168 | ||
1169 | call->wb = wb; | |
1170 | call->key = wb->key; | |
1171 | call->reply = vnode; | |
1172 | call->service_id = FS_SERVICE; | |
1173 | call->port = htons(AFS_FS_PORT); | |
1174 | call->mapping = vnode->vfs_inode.i_mapping; | |
1175 | call->first = first; | |
1176 | call->last = last; | |
1177 | call->first_offset = offset; | |
1178 | call->last_to = to; | |
1179 | call->send_pages = true; | |
1180 | call->store_version = vnode->status.data_version + 1; | |
1181 | ||
1182 | /* marshall the parameters */ | |
1183 | bp = call->request; | |
1184 | *bp++ = htonl(FSSTOREDATA64); | |
1185 | *bp++ = htonl(vnode->fid.vid); | |
1186 | *bp++ = htonl(vnode->fid.vnode); | |
1187 | *bp++ = htonl(vnode->fid.unique); | |
1188 | ||
1189 | *bp++ = 0; /* mask */ | |
1190 | *bp++ = 0; /* mtime */ | |
1191 | *bp++ = 0; /* owner */ | |
1192 | *bp++ = 0; /* group */ | |
1193 | *bp++ = 0; /* unix mode */ | |
1194 | *bp++ = 0; /* segment size */ | |
1195 | ||
1196 | *bp++ = htonl(pos >> 32); | |
1197 | *bp++ = htonl((u32) pos); | |
1198 | *bp++ = htonl(size >> 32); | |
1199 | *bp++ = htonl((u32) size); | |
1200 | *bp++ = htonl(i_size >> 32); | |
1201 | *bp++ = htonl((u32) i_size); | |
1202 | ||
1203 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1204 | } | |
1205 | ||
31143d5d DH |
1206 | /* |
1207 | * store a set of pages | |
1208 | */ | |
1209 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1210 | pgoff_t first, pgoff_t last, | |
1211 | unsigned offset, unsigned to, | |
1212 | const struct afs_wait_mode *wait_mode) | |
1213 | { | |
1214 | struct afs_vnode *vnode = wb->vnode; | |
1215 | struct afs_call *call; | |
1216 | loff_t size, pos, i_size; | |
1217 | __be32 *bp; | |
1218 | ||
1219 | _enter(",%x,{%x:%u},,", | |
1220 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1221 | ||
1222 | size = to - offset; | |
1223 | if (first != last) | |
1224 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1225 | pos = (loff_t)first << PAGE_SHIFT; | |
1226 | pos += offset; | |
1227 | ||
1228 | i_size = i_size_read(&vnode->vfs_inode); | |
1229 | if (pos + size > i_size) | |
1230 | i_size = size + pos; | |
1231 | ||
1232 | _debug("size %llx, at %llx, i_size %llx", | |
1233 | (unsigned long long) size, (unsigned long long) pos, | |
1234 | (unsigned long long) i_size); | |
1235 | ||
b9b1f8d5 DH |
1236 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1237 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
1238 | size, pos, i_size, wait_mode); | |
31143d5d DH |
1239 | |
1240 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1241 | (4 + 6 + 3) * 4, | |
1242 | (21 + 6) * 4); | |
1243 | if (!call) | |
1244 | return -ENOMEM; | |
1245 | ||
1246 | call->wb = wb; | |
1247 | call->key = wb->key; | |
1248 | call->reply = vnode; | |
1249 | call->service_id = FS_SERVICE; | |
1250 | call->port = htons(AFS_FS_PORT); | |
1251 | call->mapping = vnode->vfs_inode.i_mapping; | |
1252 | call->first = first; | |
1253 | call->last = last; | |
1254 | call->first_offset = offset; | |
1255 | call->last_to = to; | |
1256 | call->send_pages = true; | |
1257 | call->store_version = vnode->status.data_version + 1; | |
1258 | ||
1259 | /* marshall the parameters */ | |
1260 | bp = call->request; | |
1261 | *bp++ = htonl(FSSTOREDATA); | |
1262 | *bp++ = htonl(vnode->fid.vid); | |
1263 | *bp++ = htonl(vnode->fid.vnode); | |
1264 | *bp++ = htonl(vnode->fid.unique); | |
1265 | ||
1266 | *bp++ = 0; /* mask */ | |
1267 | *bp++ = 0; /* mtime */ | |
1268 | *bp++ = 0; /* owner */ | |
1269 | *bp++ = 0; /* group */ | |
1270 | *bp++ = 0; /* unix mode */ | |
1271 | *bp++ = 0; /* segment size */ | |
1272 | ||
1273 | *bp++ = htonl(pos); | |
1274 | *bp++ = htonl(size); | |
1275 | *bp++ = htonl(i_size); | |
1276 | ||
1277 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1278 | } | |
1279 | ||
1280 | /* | |
1281 | * deliver reply data to an FS.StoreStatus | |
1282 | */ | |
1283 | static int afs_deliver_fs_store_status(struct afs_call *call, | |
1284 | struct sk_buff *skb, bool last) | |
1285 | { | |
1286 | afs_dataversion_t *store_version; | |
1287 | struct afs_vnode *vnode = call->reply; | |
1288 | const __be32 *bp; | |
1289 | ||
1290 | _enter(",,%u", last); | |
1291 | ||
1292 | afs_transfer_reply(call, skb); | |
1293 | if (!last) { | |
1294 | _leave(" = 0 [more]"); | |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | if (call->reply_size != call->reply_max) { | |
1299 | _leave(" = -EBADMSG [%u != %u]", | |
1300 | call->reply_size, call->reply_max); | |
1301 | return -EBADMSG; | |
1302 | } | |
1303 | ||
1304 | /* unmarshall the reply once we've received all of it */ | |
1305 | store_version = NULL; | |
1306 | if (call->operation_ID == FSSTOREDATA) | |
1307 | store_version = &call->store_version; | |
1308 | ||
1309 | bp = call->buffer; | |
1310 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1311 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1312 | ||
1313 | _leave(" = 0 [done]"); | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * FS.StoreStatus operation type | |
1319 | */ | |
1320 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1321 | .name = "FS.StoreStatus", | |
1322 | .deliver = afs_deliver_fs_store_status, | |
1323 | .abort_to_error = afs_abort_to_error, | |
1324 | .destructor = afs_flat_call_destructor, | |
1325 | }; | |
1326 | ||
1327 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1328 | .name = "FS.StoreData", | |
1329 | .deliver = afs_deliver_fs_store_status, | |
1330 | .abort_to_error = afs_abort_to_error, | |
1331 | .destructor = afs_flat_call_destructor, | |
1332 | }; | |
1333 | ||
b9b1f8d5 DH |
1334 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1335 | .name = "FS.StoreData64", | |
1336 | .deliver = afs_deliver_fs_store_status, | |
1337 | .abort_to_error = afs_abort_to_error, | |
1338 | .destructor = afs_flat_call_destructor, | |
1339 | }; | |
1340 | ||
1341 | /* | |
1342 | * set the attributes on a very large file, using FS.StoreData rather than | |
1343 | * FS.StoreStatus so as to alter the file size also | |
1344 | */ | |
1345 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1346 | struct afs_vnode *vnode, struct iattr *attr, | |
1347 | const struct afs_wait_mode *wait_mode) | |
1348 | { | |
1349 | struct afs_call *call; | |
1350 | __be32 *bp; | |
1351 | ||
1352 | _enter(",%x,{%x:%u},,", | |
1353 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1354 | ||
1355 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1356 | ||
1357 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1358 | (4 + 6 + 3 * 2) * 4, | |
1359 | (21 + 6) * 4); | |
1360 | if (!call) | |
1361 | return -ENOMEM; | |
1362 | ||
1363 | call->key = key; | |
1364 | call->reply = vnode; | |
1365 | call->service_id = FS_SERVICE; | |
1366 | call->port = htons(AFS_FS_PORT); | |
1367 | call->store_version = vnode->status.data_version + 1; | |
1368 | call->operation_ID = FSSTOREDATA; | |
1369 | ||
1370 | /* marshall the parameters */ | |
1371 | bp = call->request; | |
1372 | *bp++ = htonl(FSSTOREDATA64); | |
1373 | *bp++ = htonl(vnode->fid.vid); | |
1374 | *bp++ = htonl(vnode->fid.vnode); | |
1375 | *bp++ = htonl(vnode->fid.unique); | |
1376 | ||
1377 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1378 | ||
1379 | *bp++ = 0; /* position of start of write */ | |
1380 | *bp++ = 0; | |
1381 | *bp++ = 0; /* size of write */ | |
1382 | *bp++ = 0; | |
1383 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1384 | *bp++ = htonl((u32) attr->ia_size); | |
1385 | ||
1386 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1387 | } | |
1388 | ||
31143d5d DH |
1389 | /* |
1390 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1391 | * so as to alter the file size also | |
1392 | */ | |
1393 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1394 | struct afs_vnode *vnode, struct iattr *attr, | |
1395 | const struct afs_wait_mode *wait_mode) | |
1396 | { | |
1397 | struct afs_call *call; | |
1398 | __be32 *bp; | |
1399 | ||
1400 | _enter(",%x,{%x:%u},,", | |
1401 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1402 | ||
1403 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1404 | if (attr->ia_size >> 32) |
1405 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
1406 | wait_mode); | |
31143d5d DH |
1407 | |
1408 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1409 | (4 + 6 + 3) * 4, | |
1410 | (21 + 6) * 4); | |
1411 | if (!call) | |
1412 | return -ENOMEM; | |
1413 | ||
1414 | call->key = key; | |
1415 | call->reply = vnode; | |
1416 | call->service_id = FS_SERVICE; | |
1417 | call->port = htons(AFS_FS_PORT); | |
1418 | call->store_version = vnode->status.data_version + 1; | |
1419 | call->operation_ID = FSSTOREDATA; | |
1420 | ||
1421 | /* marshall the parameters */ | |
1422 | bp = call->request; | |
1423 | *bp++ = htonl(FSSTOREDATA); | |
1424 | *bp++ = htonl(vnode->fid.vid); | |
1425 | *bp++ = htonl(vnode->fid.vnode); | |
1426 | *bp++ = htonl(vnode->fid.unique); | |
1427 | ||
1428 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1429 | ||
1430 | *bp++ = 0; /* position of start of write */ | |
1431 | *bp++ = 0; /* size of write */ | |
1432 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1433 | ||
1434 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1435 | } | |
1436 | ||
1437 | /* | |
1438 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1439 | * size, and FS.StoreStatus otherwise | |
1440 | */ | |
1441 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1442 | struct afs_vnode *vnode, struct iattr *attr, | |
1443 | const struct afs_wait_mode *wait_mode) | |
1444 | { | |
1445 | struct afs_call *call; | |
1446 | __be32 *bp; | |
1447 | ||
1448 | if (attr->ia_valid & ATTR_SIZE) | |
1449 | return afs_fs_setattr_size(server, key, vnode, attr, | |
1450 | wait_mode); | |
1451 | ||
1452 | _enter(",%x,{%x:%u},,", | |
1453 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1454 | ||
1455 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1456 | (4 + 6) * 4, | |
1457 | (21 + 6) * 4); | |
1458 | if (!call) | |
1459 | return -ENOMEM; | |
1460 | ||
1461 | call->key = key; | |
1462 | call->reply = vnode; | |
1463 | call->service_id = FS_SERVICE; | |
1464 | call->port = htons(AFS_FS_PORT); | |
1465 | call->operation_ID = FSSTORESTATUS; | |
1466 | ||
1467 | /* marshall the parameters */ | |
1468 | bp = call->request; | |
1469 | *bp++ = htonl(FSSTORESTATUS); | |
1470 | *bp++ = htonl(vnode->fid.vid); | |
1471 | *bp++ = htonl(vnode->fid.vnode); | |
1472 | *bp++ = htonl(vnode->fid.unique); | |
1473 | ||
1474 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1475 | ||
1476 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1477 | } | |
45222b9e DH |
1478 | |
1479 | /* | |
1480 | * deliver reply data to an FS.GetVolumeStatus | |
1481 | */ | |
1482 | static int afs_deliver_fs_get_volume_status(struct afs_call *call, | |
1483 | struct sk_buff *skb, bool last) | |
1484 | { | |
1485 | const __be32 *bp; | |
1486 | char *p; | |
1487 | int ret; | |
1488 | ||
1489 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
1490 | ||
1491 | switch (call->unmarshall) { | |
1492 | case 0: | |
1493 | call->offset = 0; | |
1494 | call->unmarshall++; | |
1495 | ||
1496 | /* extract the returned status record */ | |
1497 | case 1: | |
1498 | _debug("extract status"); | |
1499 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1500 | 12 * 4); | |
1501 | switch (ret) { | |
1502 | case 0: break; | |
1503 | case -EAGAIN: return 0; | |
1504 | default: return ret; | |
1505 | } | |
1506 | ||
1507 | bp = call->buffer; | |
1508 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); | |
1509 | call->offset = 0; | |
1510 | call->unmarshall++; | |
1511 | ||
1512 | /* extract the volume name length */ | |
1513 | case 2: | |
1514 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
1515 | switch (ret) { | |
1516 | case 0: break; | |
1517 | case -EAGAIN: return 0; | |
1518 | default: return ret; | |
1519 | } | |
1520 | ||
1521 | call->count = ntohl(call->tmp); | |
1522 | _debug("volname length: %u", call->count); | |
1523 | if (call->count >= AFSNAMEMAX) | |
1524 | return -EBADMSG; | |
1525 | call->offset = 0; | |
1526 | call->unmarshall++; | |
1527 | ||
1528 | /* extract the volume name */ | |
1529 | case 3: | |
1530 | _debug("extract volname"); | |
1531 | if (call->count > 0) { | |
1532 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1533 | call->count); | |
1534 | switch (ret) { | |
1535 | case 0: break; | |
1536 | case -EAGAIN: return 0; | |
1537 | default: return ret; | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | p = call->reply3; | |
1542 | p[call->count] = 0; | |
1543 | _debug("volname '%s'", p); | |
1544 | ||
1545 | call->offset = 0; | |
1546 | call->unmarshall++; | |
1547 | ||
1548 | /* extract the volume name padding */ | |
1549 | if ((call->count & 3) == 0) { | |
1550 | call->unmarshall++; | |
1551 | goto no_volname_padding; | |
1552 | } | |
1553 | call->count = 4 - (call->count & 3); | |
1554 | ||
1555 | case 4: | |
1556 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1557 | call->count); | |
1558 | switch (ret) { | |
1559 | case 0: break; | |
1560 | case -EAGAIN: return 0; | |
1561 | default: return ret; | |
1562 | } | |
1563 | ||
1564 | call->offset = 0; | |
1565 | call->unmarshall++; | |
1566 | no_volname_padding: | |
1567 | ||
1568 | /* extract the offline message length */ | |
1569 | case 5: | |
1570 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
1571 | switch (ret) { | |
1572 | case 0: break; | |
1573 | case -EAGAIN: return 0; | |
1574 | default: return ret; | |
1575 | } | |
1576 | ||
1577 | call->count = ntohl(call->tmp); | |
1578 | _debug("offline msg length: %u", call->count); | |
1579 | if (call->count >= AFSNAMEMAX) | |
1580 | return -EBADMSG; | |
1581 | call->offset = 0; | |
1582 | call->unmarshall++; | |
1583 | ||
1584 | /* extract the offline message */ | |
1585 | case 6: | |
1586 | _debug("extract offline"); | |
1587 | if (call->count > 0) { | |
1588 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1589 | call->count); | |
1590 | switch (ret) { | |
1591 | case 0: break; | |
1592 | case -EAGAIN: return 0; | |
1593 | default: return ret; | |
1594 | } | |
1595 | } | |
1596 | ||
1597 | p = call->reply3; | |
1598 | p[call->count] = 0; | |
1599 | _debug("offline '%s'", p); | |
1600 | ||
1601 | call->offset = 0; | |
1602 | call->unmarshall++; | |
1603 | ||
1604 | /* extract the offline message padding */ | |
1605 | if ((call->count & 3) == 0) { | |
1606 | call->unmarshall++; | |
1607 | goto no_offline_padding; | |
1608 | } | |
1609 | call->count = 4 - (call->count & 3); | |
1610 | ||
1611 | case 7: | |
1612 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1613 | call->count); | |
1614 | switch (ret) { | |
1615 | case 0: break; | |
1616 | case -EAGAIN: return 0; | |
1617 | default: return ret; | |
1618 | } | |
1619 | ||
1620 | call->offset = 0; | |
1621 | call->unmarshall++; | |
1622 | no_offline_padding: | |
1623 | ||
1624 | /* extract the message of the day length */ | |
1625 | case 8: | |
1626 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
1627 | switch (ret) { | |
1628 | case 0: break; | |
1629 | case -EAGAIN: return 0; | |
1630 | default: return ret; | |
1631 | } | |
1632 | ||
1633 | call->count = ntohl(call->tmp); | |
1634 | _debug("motd length: %u", call->count); | |
1635 | if (call->count >= AFSNAMEMAX) | |
1636 | return -EBADMSG; | |
1637 | call->offset = 0; | |
1638 | call->unmarshall++; | |
1639 | ||
1640 | /* extract the message of the day */ | |
1641 | case 9: | |
1642 | _debug("extract motd"); | |
1643 | if (call->count > 0) { | |
1644 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1645 | call->count); | |
1646 | switch (ret) { | |
1647 | case 0: break; | |
1648 | case -EAGAIN: return 0; | |
1649 | default: return ret; | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | p = call->reply3; | |
1654 | p[call->count] = 0; | |
1655 | _debug("motd '%s'", p); | |
1656 | ||
1657 | call->offset = 0; | |
1658 | call->unmarshall++; | |
1659 | ||
1660 | /* extract the message of the day padding */ | |
1661 | if ((call->count & 3) == 0) { | |
1662 | call->unmarshall++; | |
1663 | goto no_motd_padding; | |
1664 | } | |
1665 | call->count = 4 - (call->count & 3); | |
1666 | ||
1667 | case 10: | |
1668 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1669 | call->count); | |
1670 | switch (ret) { | |
1671 | case 0: break; | |
1672 | case -EAGAIN: return 0; | |
1673 | default: return ret; | |
1674 | } | |
1675 | ||
1676 | call->offset = 0; | |
1677 | call->unmarshall++; | |
1678 | no_motd_padding: | |
1679 | ||
1680 | case 11: | |
1681 | _debug("trailer %d", skb->len); | |
1682 | if (skb->len != 0) | |
1683 | return -EBADMSG; | |
1684 | break; | |
1685 | } | |
1686 | ||
1687 | if (!last) | |
1688 | return 0; | |
1689 | ||
1690 | _leave(" = 0 [done]"); | |
1691 | return 0; | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * destroy an FS.GetVolumeStatus call | |
1696 | */ | |
1697 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1698 | { | |
1699 | kfree(call->reply3); | |
1700 | call->reply3 = NULL; | |
1701 | afs_flat_call_destructor(call); | |
1702 | } | |
1703 | ||
1704 | /* | |
1705 | * FS.GetVolumeStatus operation type | |
1706 | */ | |
1707 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1708 | .name = "FS.GetVolumeStatus", | |
1709 | .deliver = afs_deliver_fs_get_volume_status, | |
1710 | .abort_to_error = afs_abort_to_error, | |
1711 | .destructor = afs_get_volume_status_call_destructor, | |
1712 | }; | |
1713 | ||
1714 | /* | |
1715 | * fetch the status of a volume | |
1716 | */ | |
1717 | int afs_fs_get_volume_status(struct afs_server *server, | |
1718 | struct key *key, | |
1719 | struct afs_vnode *vnode, | |
1720 | struct afs_volume_status *vs, | |
1721 | const struct afs_wait_mode *wait_mode) | |
1722 | { | |
1723 | struct afs_call *call; | |
1724 | __be32 *bp; | |
1725 | void *tmpbuf; | |
1726 | ||
1727 | _enter(""); | |
1728 | ||
1729 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1730 | if (!tmpbuf) | |
1731 | return -ENOMEM; | |
1732 | ||
1733 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); | |
1734 | if (!call) { | |
1735 | kfree(tmpbuf); | |
1736 | return -ENOMEM; | |
1737 | } | |
1738 | ||
1739 | call->key = key; | |
1740 | call->reply = vnode; | |
1741 | call->reply2 = vs; | |
1742 | call->reply3 = tmpbuf; | |
1743 | call->service_id = FS_SERVICE; | |
1744 | call->port = htons(AFS_FS_PORT); | |
1745 | ||
1746 | /* marshall the parameters */ | |
1747 | bp = call->request; | |
1748 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1749 | bp[1] = htonl(vnode->fid.vid); | |
1750 | ||
1751 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1752 | } | |
e8d6c554 DH |
1753 | |
1754 | /* | |
1755 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1756 | */ | |
1757 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call, | |
1758 | struct sk_buff *skb, bool last) | |
1759 | { | |
1760 | const __be32 *bp; | |
1761 | ||
1762 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
1763 | ||
1764 | afs_transfer_reply(call, skb); | |
1765 | if (!last) | |
1766 | return 0; | |
1767 | ||
1768 | if (call->reply_size != call->reply_max) | |
1769 | return -EBADMSG; | |
1770 | ||
1771 | /* unmarshall the reply once we've received all of it */ | |
1772 | bp = call->buffer; | |
1773 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1774 | ||
1775 | _leave(" = 0 [done]"); | |
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | /* | |
1780 | * FS.SetLock operation type | |
1781 | */ | |
1782 | static const struct afs_call_type afs_RXFSSetLock = { | |
1783 | .name = "FS.SetLock", | |
1784 | .deliver = afs_deliver_fs_xxxx_lock, | |
1785 | .abort_to_error = afs_abort_to_error, | |
1786 | .destructor = afs_flat_call_destructor, | |
1787 | }; | |
1788 | ||
1789 | /* | |
1790 | * FS.ExtendLock operation type | |
1791 | */ | |
1792 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1793 | .name = "FS.ExtendLock", | |
1794 | .deliver = afs_deliver_fs_xxxx_lock, | |
1795 | .abort_to_error = afs_abort_to_error, | |
1796 | .destructor = afs_flat_call_destructor, | |
1797 | }; | |
1798 | ||
1799 | /* | |
1800 | * FS.ReleaseLock operation type | |
1801 | */ | |
1802 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1803 | .name = "FS.ReleaseLock", | |
1804 | .deliver = afs_deliver_fs_xxxx_lock, | |
1805 | .abort_to_error = afs_abort_to_error, | |
1806 | .destructor = afs_flat_call_destructor, | |
1807 | }; | |
1808 | ||
1809 | /* | |
1810 | * get a lock on a file | |
1811 | */ | |
1812 | int afs_fs_set_lock(struct afs_server *server, | |
1813 | struct key *key, | |
1814 | struct afs_vnode *vnode, | |
1815 | afs_lock_type_t type, | |
1816 | const struct afs_wait_mode *wait_mode) | |
1817 | { | |
1818 | struct afs_call *call; | |
1819 | __be32 *bp; | |
1820 | ||
1821 | _enter(""); | |
1822 | ||
1823 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); | |
1824 | if (!call) | |
1825 | return -ENOMEM; | |
1826 | ||
1827 | call->key = key; | |
1828 | call->reply = vnode; | |
1829 | call->service_id = FS_SERVICE; | |
1830 | call->port = htons(AFS_FS_PORT); | |
1831 | ||
1832 | /* marshall the parameters */ | |
1833 | bp = call->request; | |
1834 | *bp++ = htonl(FSSETLOCK); | |
1835 | *bp++ = htonl(vnode->fid.vid); | |
1836 | *bp++ = htonl(vnode->fid.vnode); | |
1837 | *bp++ = htonl(vnode->fid.unique); | |
1838 | *bp++ = htonl(type); | |
1839 | ||
1840 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1841 | } | |
1842 | ||
1843 | /* | |
1844 | * extend a lock on a file | |
1845 | */ | |
1846 | int afs_fs_extend_lock(struct afs_server *server, | |
1847 | struct key *key, | |
1848 | struct afs_vnode *vnode, | |
1849 | const struct afs_wait_mode *wait_mode) | |
1850 | { | |
1851 | struct afs_call *call; | |
1852 | __be32 *bp; | |
1853 | ||
1854 | _enter(""); | |
1855 | ||
1856 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); | |
1857 | if (!call) | |
1858 | return -ENOMEM; | |
1859 | ||
1860 | call->key = key; | |
1861 | call->reply = vnode; | |
1862 | call->service_id = FS_SERVICE; | |
1863 | call->port = htons(AFS_FS_PORT); | |
1864 | ||
1865 | /* marshall the parameters */ | |
1866 | bp = call->request; | |
1867 | *bp++ = htonl(FSEXTENDLOCK); | |
1868 | *bp++ = htonl(vnode->fid.vid); | |
1869 | *bp++ = htonl(vnode->fid.vnode); | |
1870 | *bp++ = htonl(vnode->fid.unique); | |
1871 | ||
1872 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1873 | } | |
1874 | ||
1875 | /* | |
1876 | * release a lock on a file | |
1877 | */ | |
1878 | int afs_fs_release_lock(struct afs_server *server, | |
1879 | struct key *key, | |
1880 | struct afs_vnode *vnode, | |
1881 | const struct afs_wait_mode *wait_mode) | |
1882 | { | |
1883 | struct afs_call *call; | |
1884 | __be32 *bp; | |
1885 | ||
1886 | _enter(""); | |
1887 | ||
1888 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); | |
1889 | if (!call) | |
1890 | return -ENOMEM; | |
1891 | ||
1892 | call->key = key; | |
1893 | call->reply = vnode; | |
1894 | call->service_id = FS_SERVICE; | |
1895 | call->port = htons(AFS_FS_PORT); | |
1896 | ||
1897 | /* marshall the parameters */ | |
1898 | bp = call->request; | |
1899 | *bp++ = htonl(FSRELEASELOCK); | |
1900 | *bp++ = htonl(vnode->fid.vid); | |
1901 | *bp++ = htonl(vnode->fid.vnode); | |
1902 | *bp++ = htonl(vnode->fid.unique); | |
1903 | ||
1904 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1905 | } |