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> | |
13 | #include <linux/sched.h> | |
08e0e7c8 | 14 | #include <linux/circ_buf.h> |
1da177e4 | 15 | #include "internal.h" |
08e0e7c8 | 16 | #include "afs_fs.h" |
1da177e4 | 17 | |
260a9803 DH |
18 | /* |
19 | * decode an AFSFid block | |
20 | */ | |
21 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
22 | { | |
23 | const __be32 *bp = *_bp; | |
24 | ||
25 | fid->vid = ntohl(*bp++); | |
26 | fid->vnode = ntohl(*bp++); | |
27 | fid->unique = ntohl(*bp++); | |
28 | *_bp = bp; | |
29 | } | |
30 | ||
1da177e4 | 31 | /* |
08e0e7c8 | 32 | * decode an AFSFetchStatus block |
1da177e4 | 33 | */ |
08e0e7c8 | 34 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 35 | struct afs_file_status *status, |
31143d5d DH |
36 | struct afs_vnode *vnode, |
37 | afs_dataversion_t *store_version) | |
1da177e4 | 38 | { |
31143d5d | 39 | afs_dataversion_t expected_version; |
08e0e7c8 DH |
40 | const __be32 *bp = *_bp; |
41 | umode_t mode; | |
260a9803 | 42 | u64 data_version, size; |
08e0e7c8 DH |
43 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
44 | ||
45 | #define EXTRACT(DST) \ | |
46 | do { \ | |
47 | u32 x = ntohl(*bp++); \ | |
48 | changed |= DST - x; \ | |
49 | DST = x; \ | |
50 | } while (0) | |
51 | ||
260a9803 DH |
52 | status->if_version = ntohl(*bp++); |
53 | EXTRACT(status->type); | |
54 | EXTRACT(status->nlink); | |
55 | size = ntohl(*bp++); | |
08e0e7c8 | 56 | data_version = ntohl(*bp++); |
260a9803 DH |
57 | EXTRACT(status->author); |
58 | EXTRACT(status->owner); | |
59 | EXTRACT(status->caller_access); /* call ticket dependent */ | |
60 | EXTRACT(status->anon_access); | |
61 | EXTRACT(status->mode); | |
62 | EXTRACT(status->parent.vnode); | |
63 | EXTRACT(status->parent.unique); | |
08e0e7c8 | 64 | bp++; /* seg size */ |
260a9803 DH |
65 | status->mtime_client = ntohl(*bp++); |
66 | status->mtime_server = ntohl(*bp++); | |
67 | EXTRACT(status->group); | |
08e0e7c8 DH |
68 | bp++; /* sync counter */ |
69 | data_version |= (u64) ntohl(*bp++) << 32; | |
e8d6c554 | 70 | EXTRACT(status->lock_count); |
260a9803 DH |
71 | size |= (u64) ntohl(*bp++) << 32; |
72 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
73 | *_bp = bp; |
74 | ||
260a9803 DH |
75 | if (size != status->size) { |
76 | status->size = size; | |
77 | changed |= true; | |
08e0e7c8 | 78 | } |
260a9803 | 79 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
80 | |
81 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
82 | status->mtime_client, status->mtime_server); |
83 | ||
84 | if (vnode) { | |
85 | status->parent.vid = vnode->fid.vid; | |
86 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
87 | _debug("vnode changed"); | |
88 | i_size_write(&vnode->vfs_inode, size); | |
89 | vnode->vfs_inode.i_uid = status->owner; | |
90 | vnode->vfs_inode.i_gid = status->group; | |
91 | vnode->vfs_inode.i_version = vnode->fid.unique; | |
92 | vnode->vfs_inode.i_nlink = status->nlink; | |
93 | ||
94 | mode = vnode->vfs_inode.i_mode; | |
95 | mode &= ~S_IALLUGO; | |
96 | mode |= status->mode; | |
97 | barrier(); | |
98 | vnode->vfs_inode.i_mode = mode; | |
99 | } | |
100 | ||
101 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server; | |
102 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; | |
103 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
104 | } | |
105 | ||
31143d5d DH |
106 | expected_version = status->data_version; |
107 | if (store_version) | |
108 | expected_version = *store_version; | |
109 | ||
110 | if (expected_version != data_version) { | |
260a9803 DH |
111 | status->data_version = data_version; |
112 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
113 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
114 | (unsigned long long) data_version, |
115 | vnode->fid.vid, vnode->fid.vnode); | |
260a9803 DH |
116 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
117 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); | |
118 | } | |
31143d5d DH |
119 | } else if (store_version) { |
120 | status->data_version = data_version; | |
1da177e4 | 121 | } |
ec26815a | 122 | } |
1da177e4 | 123 | |
1da177e4 | 124 | /* |
08e0e7c8 | 125 | * decode an AFSCallBack block |
1da177e4 | 126 | */ |
08e0e7c8 | 127 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
1da177e4 | 128 | { |
08e0e7c8 | 129 | const __be32 *bp = *_bp; |
1da177e4 | 130 | |
08e0e7c8 DH |
131 | vnode->cb_version = ntohl(*bp++); |
132 | vnode->cb_expiry = ntohl(*bp++); | |
133 | vnode->cb_type = ntohl(*bp++); | |
134 | vnode->cb_expires = vnode->cb_expiry + get_seconds(); | |
135 | *_bp = bp; | |
ec26815a | 136 | } |
1da177e4 | 137 | |
260a9803 DH |
138 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
139 | struct afs_callback *cb) | |
140 | { | |
141 | const __be32 *bp = *_bp; | |
142 | ||
143 | cb->version = ntohl(*bp++); | |
144 | cb->expiry = ntohl(*bp++); | |
145 | cb->type = ntohl(*bp++); | |
146 | *_bp = bp; | |
147 | } | |
148 | ||
1da177e4 | 149 | /* |
08e0e7c8 | 150 | * decode an AFSVolSync block |
1da177e4 | 151 | */ |
08e0e7c8 DH |
152 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
153 | struct afs_volsync *volsync) | |
1da177e4 | 154 | { |
08e0e7c8 | 155 | const __be32 *bp = *_bp; |
1da177e4 | 156 | |
08e0e7c8 DH |
157 | volsync->creation = ntohl(*bp++); |
158 | bp++; /* spare2 */ | |
159 | bp++; /* spare3 */ | |
160 | bp++; /* spare4 */ | |
161 | bp++; /* spare5 */ | |
162 | bp++; /* spare6 */ | |
163 | *_bp = bp; | |
164 | } | |
1da177e4 | 165 | |
31143d5d DH |
166 | /* |
167 | * encode the requested attributes into an AFSStoreStatus block | |
168 | */ | |
169 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
170 | { | |
171 | __be32 *bp = *_bp; | |
172 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
173 | ||
174 | mask = 0; | |
175 | if (attr->ia_valid & ATTR_MTIME) { | |
176 | mask |= AFS_SET_MTIME; | |
177 | mtime = attr->ia_mtime.tv_sec; | |
178 | } | |
179 | ||
180 | if (attr->ia_valid & ATTR_UID) { | |
181 | mask |= AFS_SET_OWNER; | |
182 | owner = attr->ia_uid; | |
183 | } | |
184 | ||
185 | if (attr->ia_valid & ATTR_GID) { | |
186 | mask |= AFS_SET_GROUP; | |
187 | group = attr->ia_gid; | |
188 | } | |
189 | ||
190 | if (attr->ia_valid & ATTR_MODE) { | |
191 | mask |= AFS_SET_MODE; | |
192 | mode = attr->ia_mode & S_IALLUGO; | |
193 | } | |
194 | ||
195 | *bp++ = htonl(mask); | |
196 | *bp++ = htonl(mtime); | |
197 | *bp++ = htonl(owner); | |
198 | *bp++ = htonl(group); | |
199 | *bp++ = htonl(mode); | |
200 | *bp++ = 0; /* segment size */ | |
201 | *_bp = bp; | |
202 | } | |
203 | ||
45222b9e DH |
204 | /* |
205 | * decode an AFSFetchVolumeStatus block | |
206 | */ | |
207 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, | |
208 | struct afs_volume_status *vs) | |
209 | { | |
210 | const __be32 *bp = *_bp; | |
211 | ||
212 | vs->vid = ntohl(*bp++); | |
213 | vs->parent_id = ntohl(*bp++); | |
214 | vs->online = ntohl(*bp++); | |
215 | vs->in_service = ntohl(*bp++); | |
216 | vs->blessed = ntohl(*bp++); | |
217 | vs->needs_salvage = ntohl(*bp++); | |
218 | vs->type = ntohl(*bp++); | |
219 | vs->min_quota = ntohl(*bp++); | |
220 | vs->max_quota = ntohl(*bp++); | |
221 | vs->blocks_in_use = ntohl(*bp++); | |
222 | vs->part_blocks_avail = ntohl(*bp++); | |
223 | vs->part_max_blocks = ntohl(*bp++); | |
224 | *_bp = bp; | |
225 | } | |
226 | ||
08e0e7c8 DH |
227 | /* |
228 | * deliver reply data to an FS.FetchStatus | |
229 | */ | |
230 | static int afs_deliver_fs_fetch_status(struct afs_call *call, | |
231 | struct sk_buff *skb, bool last) | |
232 | { | |
260a9803 | 233 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 234 | const __be32 *bp; |
1da177e4 | 235 | |
08e0e7c8 | 236 | _enter(",,%u", last); |
1da177e4 | 237 | |
08e0e7c8 DH |
238 | afs_transfer_reply(call, skb); |
239 | if (!last) | |
240 | return 0; | |
1da177e4 | 241 | |
08e0e7c8 DH |
242 | if (call->reply_size != call->reply_max) |
243 | return -EBADMSG; | |
1da177e4 | 244 | |
08e0e7c8 DH |
245 | /* unmarshall the reply once we've received all of it */ |
246 | bp = call->buffer; | |
31143d5d | 247 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 248 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
249 | if (call->reply2) |
250 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 251 | |
08e0e7c8 DH |
252 | _leave(" = 0 [done]"); |
253 | return 0; | |
ec26815a | 254 | } |
08e0e7c8 DH |
255 | |
256 | /* | |
257 | * FS.FetchStatus operation type | |
258 | */ | |
259 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 260 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
261 | .deliver = afs_deliver_fs_fetch_status, |
262 | .abort_to_error = afs_abort_to_error, | |
263 | .destructor = afs_flat_call_destructor, | |
264 | }; | |
1da177e4 | 265 | |
1da177e4 LT |
266 | /* |
267 | * fetch the status information for a file | |
268 | */ | |
08e0e7c8 | 269 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 270 | struct key *key, |
08e0e7c8 DH |
271 | struct afs_vnode *vnode, |
272 | struct afs_volsync *volsync, | |
273 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 274 | { |
08e0e7c8 | 275 | struct afs_call *call; |
1da177e4 LT |
276 | __be32 *bp; |
277 | ||
416351f2 | 278 | _enter(",%x,{%x:%u},,", |
260a9803 | 279 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 280 | |
260a9803 | 281 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
282 | if (!call) |
283 | return -ENOMEM; | |
1da177e4 | 284 | |
00d3b7a4 | 285 | call->key = key; |
08e0e7c8 DH |
286 | call->reply = vnode; |
287 | call->reply2 = volsync; | |
288 | call->service_id = FS_SERVICE; | |
289 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
290 | |
291 | /* marshall the parameters */ | |
08e0e7c8 | 292 | bp = call->request; |
1da177e4 LT |
293 | bp[0] = htonl(FSFETCHSTATUS); |
294 | bp[1] = htonl(vnode->fid.vid); | |
295 | bp[2] = htonl(vnode->fid.vnode); | |
296 | bp[3] = htonl(vnode->fid.unique); | |
297 | ||
08e0e7c8 | 298 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 299 | } |
1da177e4 | 300 | |
1da177e4 | 301 | /* |
08e0e7c8 | 302 | * deliver reply data to an FS.FetchData |
1da177e4 | 303 | */ |
08e0e7c8 DH |
304 | static int afs_deliver_fs_fetch_data(struct afs_call *call, |
305 | struct sk_buff *skb, bool last) | |
1da177e4 | 306 | { |
260a9803 | 307 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 DH |
308 | const __be32 *bp; |
309 | struct page *page; | |
310 | void *buffer; | |
1da177e4 | 311 | int ret; |
1da177e4 | 312 | |
08e0e7c8 DH |
313 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
314 | ||
315 | switch (call->unmarshall) { | |
316 | case 0: | |
317 | call->offset = 0; | |
318 | call->unmarshall++; | |
b9b1f8d5 DH |
319 | if (call->operation_ID != FSFETCHDATA64) { |
320 | call->unmarshall++; | |
321 | goto no_msw; | |
322 | } | |
08e0e7c8 | 323 | |
b9b1f8d5 DH |
324 | /* extract the upper part of the returned data length of an |
325 | * FSFETCHDATA64 op (which should always be 0 using this | |
326 | * client) */ | |
08e0e7c8 | 327 | case 1: |
b9b1f8d5 DH |
328 | _debug("extract data length (MSW)"); |
329 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
330 | switch (ret) { | |
331 | case 0: break; | |
332 | case -EAGAIN: return 0; | |
333 | default: return ret; | |
334 | } | |
335 | ||
336 | call->count = ntohl(call->tmp); | |
337 | _debug("DATA length MSW: %u", call->count); | |
338 | if (call->count > 0) | |
339 | return -EBADMSG; | |
340 | call->offset = 0; | |
341 | call->unmarshall++; | |
342 | ||
343 | no_msw: | |
344 | /* extract the returned data length */ | |
345 | case 2: | |
08e0e7c8 DH |
346 | _debug("extract data length"); |
347 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
348 | switch (ret) { | |
349 | case 0: break; | |
350 | case -EAGAIN: return 0; | |
351 | default: return ret; | |
352 | } | |
1da177e4 | 353 | |
08e0e7c8 DH |
354 | call->count = ntohl(call->tmp); |
355 | _debug("DATA length: %u", call->count); | |
356 | if (call->count > PAGE_SIZE) | |
357 | return -EBADMSG; | |
358 | call->offset = 0; | |
359 | call->unmarshall++; | |
360 | ||
08e0e7c8 | 361 | /* extract the returned data */ |
b9b1f8d5 | 362 | case 3: |
08e0e7c8 | 363 | _debug("extract data"); |
416351f2 DH |
364 | if (call->count > 0) { |
365 | page = call->reply3; | |
366 | buffer = kmap_atomic(page, KM_USER0); | |
367 | ret = afs_extract_data(call, skb, last, buffer, | |
368 | call->count); | |
369 | kunmap_atomic(buffer, KM_USER0); | |
370 | switch (ret) { | |
371 | case 0: break; | |
372 | case -EAGAIN: return 0; | |
373 | default: return ret; | |
374 | } | |
08e0e7c8 | 375 | } |
1da177e4 | 376 | |
08e0e7c8 DH |
377 | call->offset = 0; |
378 | call->unmarshall++; | |
1da177e4 | 379 | |
08e0e7c8 | 380 | /* extract the metadata */ |
b9b1f8d5 | 381 | case 4: |
260a9803 DH |
382 | ret = afs_extract_data(call, skb, last, call->buffer, |
383 | (21 + 3 + 6) * 4); | |
08e0e7c8 DH |
384 | switch (ret) { |
385 | case 0: break; | |
386 | case -EAGAIN: return 0; | |
387 | default: return ret; | |
388 | } | |
389 | ||
390 | bp = call->buffer; | |
31143d5d | 391 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 392 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
393 | if (call->reply2) |
394 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
395 | ||
396 | call->offset = 0; | |
397 | call->unmarshall++; | |
1da177e4 | 398 | |
b9b1f8d5 | 399 | case 5: |
08e0e7c8 DH |
400 | _debug("trailer"); |
401 | if (skb->len != 0) | |
402 | return -EBADMSG; | |
403 | break; | |
1da177e4 LT |
404 | } |
405 | ||
08e0e7c8 DH |
406 | if (!last) |
407 | return 0; | |
408 | ||
416351f2 DH |
409 | if (call->count < PAGE_SIZE) { |
410 | _debug("clear"); | |
411 | page = call->reply3; | |
412 | buffer = kmap_atomic(page, KM_USER0); | |
413 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); | |
414 | kunmap_atomic(buffer, KM_USER0); | |
415 | } | |
416 | ||
08e0e7c8 DH |
417 | _leave(" = 0 [done]"); |
418 | return 0; | |
ec26815a | 419 | } |
1da177e4 | 420 | |
1da177e4 | 421 | /* |
08e0e7c8 | 422 | * FS.FetchData operation type |
1da177e4 | 423 | */ |
08e0e7c8 | 424 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 425 | .name = "FS.FetchData", |
08e0e7c8 DH |
426 | .deliver = afs_deliver_fs_fetch_data, |
427 | .abort_to_error = afs_abort_to_error, | |
428 | .destructor = afs_flat_call_destructor, | |
429 | }; | |
430 | ||
b9b1f8d5 DH |
431 | static const struct afs_call_type afs_RXFSFetchData64 = { |
432 | .name = "FS.FetchData64", | |
433 | .deliver = afs_deliver_fs_fetch_data, | |
434 | .abort_to_error = afs_abort_to_error, | |
435 | .destructor = afs_flat_call_destructor, | |
436 | }; | |
437 | ||
438 | /* | |
439 | * fetch data from a very large file | |
440 | */ | |
441 | static int afs_fs_fetch_data64(struct afs_server *server, | |
442 | struct key *key, | |
443 | struct afs_vnode *vnode, | |
444 | off_t offset, size_t length, | |
445 | struct page *buffer, | |
446 | const struct afs_wait_mode *wait_mode) | |
447 | { | |
448 | struct afs_call *call; | |
449 | __be32 *bp; | |
450 | ||
451 | _enter(""); | |
452 | ||
453 | ASSERTCMP(length, <, ULONG_MAX); | |
454 | ||
455 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); | |
456 | if (!call) | |
457 | return -ENOMEM; | |
458 | ||
459 | call->key = key; | |
460 | call->reply = vnode; | |
461 | call->reply2 = NULL; /* volsync */ | |
462 | call->reply3 = buffer; | |
463 | call->service_id = FS_SERVICE; | |
464 | call->port = htons(AFS_FS_PORT); | |
465 | call->operation_ID = FSFETCHDATA64; | |
466 | ||
467 | /* marshall the parameters */ | |
468 | bp = call->request; | |
469 | bp[0] = htonl(FSFETCHDATA64); | |
470 | bp[1] = htonl(vnode->fid.vid); | |
471 | bp[2] = htonl(vnode->fid.vnode); | |
472 | bp[3] = htonl(vnode->fid.unique); | |
473 | bp[4] = htonl(upper_32_bits(offset)); | |
474 | bp[5] = htonl((u32) offset); | |
475 | bp[6] = 0; | |
476 | bp[7] = htonl((u32) length); | |
477 | ||
478 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
479 | } | |
480 | ||
08e0e7c8 DH |
481 | /* |
482 | * fetch data from a file | |
483 | */ | |
484 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 485 | struct key *key, |
08e0e7c8 DH |
486 | struct afs_vnode *vnode, |
487 | off_t offset, size_t length, | |
488 | struct page *buffer, | |
08e0e7c8 | 489 | const struct afs_wait_mode *wait_mode) |
1da177e4 | 490 | { |
08e0e7c8 | 491 | struct afs_call *call; |
1da177e4 LT |
492 | __be32 *bp; |
493 | ||
b9b1f8d5 DH |
494 | if (upper_32_bits(offset) || upper_32_bits(offset + length)) |
495 | return afs_fs_fetch_data64(server, key, vnode, offset, length, | |
496 | buffer, wait_mode); | |
497 | ||
08e0e7c8 | 498 | _enter(""); |
1da177e4 | 499 | |
260a9803 | 500 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
501 | if (!call) |
502 | return -ENOMEM; | |
1da177e4 | 503 | |
00d3b7a4 | 504 | call->key = key; |
08e0e7c8 | 505 | call->reply = vnode; |
260a9803 | 506 | call->reply2 = NULL; /* volsync */ |
08e0e7c8 DH |
507 | call->reply3 = buffer; |
508 | call->service_id = FS_SERVICE; | |
509 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 510 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
511 | |
512 | /* marshall the parameters */ | |
08e0e7c8 DH |
513 | bp = call->request; |
514 | bp[0] = htonl(FSFETCHDATA); | |
515 | bp[1] = htonl(vnode->fid.vid); | |
516 | bp[2] = htonl(vnode->fid.vnode); | |
517 | bp[3] = htonl(vnode->fid.unique); | |
518 | bp[4] = htonl(offset); | |
519 | bp[5] = htonl(length); | |
1da177e4 | 520 | |
08e0e7c8 DH |
521 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
522 | } | |
1da177e4 | 523 | |
08e0e7c8 DH |
524 | /* |
525 | * deliver reply data to an FS.GiveUpCallBacks | |
526 | */ | |
527 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call, | |
528 | struct sk_buff *skb, bool last) | |
529 | { | |
530 | _enter(",{%u},%d", skb->len, last); | |
1da177e4 | 531 | |
08e0e7c8 DH |
532 | if (skb->len > 0) |
533 | return -EBADMSG; /* shouldn't be any reply data */ | |
534 | return 0; | |
ec26815a | 535 | } |
1da177e4 | 536 | |
1da177e4 | 537 | /* |
08e0e7c8 DH |
538 | * FS.GiveUpCallBacks operation type |
539 | */ | |
540 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 541 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
542 | .deliver = afs_deliver_fs_give_up_callbacks, |
543 | .abort_to_error = afs_abort_to_error, | |
544 | .destructor = afs_flat_call_destructor, | |
545 | }; | |
546 | ||
547 | /* | |
548 | * give up a set of callbacks | |
549 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 550 | */ |
08e0e7c8 DH |
551 | int afs_fs_give_up_callbacks(struct afs_server *server, |
552 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 553 | { |
08e0e7c8 DH |
554 | struct afs_call *call; |
555 | size_t ncallbacks; | |
556 | __be32 *bp, *tp; | |
557 | int loop; | |
1da177e4 | 558 | |
08e0e7c8 DH |
559 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
560 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 561 | |
08e0e7c8 | 562 | _enter("{%zu},", ncallbacks); |
1da177e4 | 563 | |
08e0e7c8 DH |
564 | if (ncallbacks == 0) |
565 | return 0; | |
566 | if (ncallbacks > AFSCBMAX) | |
567 | ncallbacks = AFSCBMAX; | |
1da177e4 | 568 | |
08e0e7c8 | 569 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 570 | |
08e0e7c8 DH |
571 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
572 | 12 + ncallbacks * 6 * 4, 0); | |
573 | if (!call) | |
574 | return -ENOMEM; | |
575 | ||
576 | call->service_id = FS_SERVICE; | |
577 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
578 | |
579 | /* marshall the parameters */ | |
08e0e7c8 DH |
580 | bp = call->request; |
581 | tp = bp + 2 + ncallbacks * 3; | |
582 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
583 | *bp++ = htonl(ncallbacks); | |
584 | *tp++ = htonl(ncallbacks); | |
585 | ||
586 | atomic_sub(ncallbacks, &server->cb_break_n); | |
587 | for (loop = ncallbacks; loop > 0; loop--) { | |
588 | struct afs_callback *cb = | |
589 | &server->cb_break[server->cb_break_tail]; | |
590 | ||
591 | *bp++ = htonl(cb->fid.vid); | |
592 | *bp++ = htonl(cb->fid.vnode); | |
593 | *bp++ = htonl(cb->fid.unique); | |
594 | *tp++ = htonl(cb->version); | |
595 | *tp++ = htonl(cb->expiry); | |
596 | *tp++ = htonl(cb->type); | |
597 | smp_mb(); | |
598 | server->cb_break_tail = | |
599 | (server->cb_break_tail + 1) & | |
600 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
601 | } |
602 | ||
08e0e7c8 DH |
603 | ASSERT(ncallbacks > 0); |
604 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 605 | |
08e0e7c8 | 606 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 607 | } |
260a9803 DH |
608 | |
609 | /* | |
610 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
611 | */ | |
612 | static int afs_deliver_fs_create_vnode(struct afs_call *call, | |
613 | struct sk_buff *skb, bool last) | |
614 | { | |
615 | struct afs_vnode *vnode = call->reply; | |
616 | const __be32 *bp; | |
617 | ||
618 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
619 | ||
620 | afs_transfer_reply(call, skb); | |
621 | if (!last) | |
622 | return 0; | |
623 | ||
624 | if (call->reply_size != call->reply_max) | |
625 | return -EBADMSG; | |
626 | ||
627 | /* unmarshall the reply once we've received all of it */ | |
628 | bp = call->buffer; | |
629 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
630 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
631 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
632 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
633 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
634 | ||
635 | _leave(" = 0 [done]"); | |
636 | return 0; | |
637 | } | |
638 | ||
639 | /* | |
640 | * FS.CreateFile and FS.MakeDir operation type | |
641 | */ | |
642 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
643 | .name = "FS.CreateXXXX", | |
644 | .deliver = afs_deliver_fs_create_vnode, | |
645 | .abort_to_error = afs_abort_to_error, | |
646 | .destructor = afs_flat_call_destructor, | |
647 | }; | |
648 | ||
649 | /* | |
650 | * create a file or make a directory | |
651 | */ | |
652 | int afs_fs_create(struct afs_server *server, | |
653 | struct key *key, | |
654 | struct afs_vnode *vnode, | |
655 | const char *name, | |
656 | umode_t mode, | |
657 | struct afs_fid *newfid, | |
658 | struct afs_file_status *newstatus, | |
659 | struct afs_callback *newcb, | |
660 | const struct afs_wait_mode *wait_mode) | |
661 | { | |
662 | struct afs_call *call; | |
663 | size_t namesz, reqsz, padsz; | |
664 | __be32 *bp; | |
665 | ||
666 | _enter(""); | |
667 | ||
668 | namesz = strlen(name); | |
669 | padsz = (4 - (namesz & 3)) & 3; | |
670 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
671 | ||
672 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
673 | (3 + 21 + 21 + 3 + 6) * 4); | |
674 | if (!call) | |
675 | return -ENOMEM; | |
676 | ||
677 | call->key = key; | |
678 | call->reply = vnode; | |
679 | call->reply2 = newfid; | |
680 | call->reply3 = newstatus; | |
681 | call->reply4 = newcb; | |
682 | call->service_id = FS_SERVICE; | |
683 | call->port = htons(AFS_FS_PORT); | |
684 | ||
685 | /* marshall the parameters */ | |
686 | bp = call->request; | |
687 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
688 | *bp++ = htonl(vnode->fid.vid); | |
689 | *bp++ = htonl(vnode->fid.vnode); | |
690 | *bp++ = htonl(vnode->fid.unique); | |
691 | *bp++ = htonl(namesz); | |
692 | memcpy(bp, name, namesz); | |
693 | bp = (void *) bp + namesz; | |
694 | if (padsz > 0) { | |
695 | memset(bp, 0, padsz); | |
696 | bp = (void *) bp + padsz; | |
697 | } | |
698 | *bp++ = htonl(AFS_SET_MODE); | |
699 | *bp++ = 0; /* mtime */ | |
700 | *bp++ = 0; /* owner */ | |
701 | *bp++ = 0; /* group */ | |
702 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
703 | *bp++ = 0; /* segment size */ | |
704 | ||
705 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
706 | } | |
707 | ||
708 | /* | |
709 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
710 | */ | |
711 | static int afs_deliver_fs_remove(struct afs_call *call, | |
712 | struct sk_buff *skb, bool last) | |
713 | { | |
714 | struct afs_vnode *vnode = call->reply; | |
715 | const __be32 *bp; | |
716 | ||
717 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
718 | ||
719 | afs_transfer_reply(call, skb); | |
720 | if (!last) | |
721 | return 0; | |
722 | ||
723 | if (call->reply_size != call->reply_max) | |
724 | return -EBADMSG; | |
725 | ||
726 | /* unmarshall the reply once we've received all of it */ | |
727 | bp = call->buffer; | |
31143d5d | 728 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
729 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
730 | ||
731 | _leave(" = 0 [done]"); | |
732 | return 0; | |
733 | } | |
734 | ||
735 | /* | |
736 | * FS.RemoveDir/FS.RemoveFile operation type | |
737 | */ | |
738 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
739 | .name = "FS.RemoveXXXX", | |
740 | .deliver = afs_deliver_fs_remove, | |
741 | .abort_to_error = afs_abort_to_error, | |
742 | .destructor = afs_flat_call_destructor, | |
743 | }; | |
744 | ||
745 | /* | |
746 | * remove a file or directory | |
747 | */ | |
748 | int afs_fs_remove(struct afs_server *server, | |
749 | struct key *key, | |
750 | struct afs_vnode *vnode, | |
751 | const char *name, | |
752 | bool isdir, | |
753 | const struct afs_wait_mode *wait_mode) | |
754 | { | |
755 | struct afs_call *call; | |
756 | size_t namesz, reqsz, padsz; | |
757 | __be32 *bp; | |
758 | ||
759 | _enter(""); | |
760 | ||
761 | namesz = strlen(name); | |
762 | padsz = (4 - (namesz & 3)) & 3; | |
763 | reqsz = (5 * 4) + namesz + padsz; | |
764 | ||
765 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
766 | if (!call) | |
767 | return -ENOMEM; | |
768 | ||
769 | call->key = key; | |
770 | call->reply = vnode; | |
771 | call->service_id = FS_SERVICE; | |
772 | call->port = htons(AFS_FS_PORT); | |
773 | ||
774 | /* marshall the parameters */ | |
775 | bp = call->request; | |
776 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
777 | *bp++ = htonl(vnode->fid.vid); | |
778 | *bp++ = htonl(vnode->fid.vnode); | |
779 | *bp++ = htonl(vnode->fid.unique); | |
780 | *bp++ = htonl(namesz); | |
781 | memcpy(bp, name, namesz); | |
782 | bp = (void *) bp + namesz; | |
783 | if (padsz > 0) { | |
784 | memset(bp, 0, padsz); | |
785 | bp = (void *) bp + padsz; | |
786 | } | |
787 | ||
788 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
789 | } | |
790 | ||
791 | /* | |
792 | * deliver reply data to an FS.Link | |
793 | */ | |
794 | static int afs_deliver_fs_link(struct afs_call *call, | |
795 | struct sk_buff *skb, bool last) | |
796 | { | |
797 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
798 | const __be32 *bp; | |
799 | ||
800 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
801 | ||
802 | afs_transfer_reply(call, skb); | |
803 | if (!last) | |
804 | return 0; | |
805 | ||
806 | if (call->reply_size != call->reply_max) | |
807 | return -EBADMSG; | |
808 | ||
809 | /* unmarshall the reply once we've received all of it */ | |
810 | bp = call->buffer; | |
31143d5d DH |
811 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
812 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
813 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
814 | ||
815 | _leave(" = 0 [done]"); | |
816 | return 0; | |
817 | } | |
818 | ||
819 | /* | |
820 | * FS.Link operation type | |
821 | */ | |
822 | static const struct afs_call_type afs_RXFSLink = { | |
823 | .name = "FS.Link", | |
824 | .deliver = afs_deliver_fs_link, | |
825 | .abort_to_error = afs_abort_to_error, | |
826 | .destructor = afs_flat_call_destructor, | |
827 | }; | |
828 | ||
829 | /* | |
830 | * make a hard link | |
831 | */ | |
832 | int afs_fs_link(struct afs_server *server, | |
833 | struct key *key, | |
834 | struct afs_vnode *dvnode, | |
835 | struct afs_vnode *vnode, | |
836 | const char *name, | |
837 | const struct afs_wait_mode *wait_mode) | |
838 | { | |
839 | struct afs_call *call; | |
840 | size_t namesz, reqsz, padsz; | |
841 | __be32 *bp; | |
842 | ||
843 | _enter(""); | |
844 | ||
845 | namesz = strlen(name); | |
846 | padsz = (4 - (namesz & 3)) & 3; | |
847 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
848 | ||
849 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
850 | if (!call) | |
851 | return -ENOMEM; | |
852 | ||
853 | call->key = key; | |
854 | call->reply = dvnode; | |
855 | call->reply2 = vnode; | |
856 | call->service_id = FS_SERVICE; | |
857 | call->port = htons(AFS_FS_PORT); | |
858 | ||
859 | /* marshall the parameters */ | |
860 | bp = call->request; | |
861 | *bp++ = htonl(FSLINK); | |
862 | *bp++ = htonl(dvnode->fid.vid); | |
863 | *bp++ = htonl(dvnode->fid.vnode); | |
864 | *bp++ = htonl(dvnode->fid.unique); | |
865 | *bp++ = htonl(namesz); | |
866 | memcpy(bp, name, namesz); | |
867 | bp = (void *) bp + namesz; | |
868 | if (padsz > 0) { | |
869 | memset(bp, 0, padsz); | |
870 | bp = (void *) bp + padsz; | |
871 | } | |
872 | *bp++ = htonl(vnode->fid.vid); | |
873 | *bp++ = htonl(vnode->fid.vnode); | |
874 | *bp++ = htonl(vnode->fid.unique); | |
875 | ||
876 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
877 | } | |
878 | ||
879 | /* | |
880 | * deliver reply data to an FS.Symlink | |
881 | */ | |
882 | static int afs_deliver_fs_symlink(struct afs_call *call, | |
883 | struct sk_buff *skb, bool last) | |
884 | { | |
885 | struct afs_vnode *vnode = call->reply; | |
886 | const __be32 *bp; | |
887 | ||
888 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
889 | ||
890 | afs_transfer_reply(call, skb); | |
891 | if (!last) | |
892 | return 0; | |
893 | ||
894 | if (call->reply_size != call->reply_max) | |
895 | return -EBADMSG; | |
896 | ||
897 | /* unmarshall the reply once we've received all of it */ | |
898 | bp = call->buffer; | |
899 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
900 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
901 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
902 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
903 | ||
904 | _leave(" = 0 [done]"); | |
905 | return 0; | |
906 | } | |
907 | ||
908 | /* | |
909 | * FS.Symlink operation type | |
910 | */ | |
911 | static const struct afs_call_type afs_RXFSSymlink = { | |
912 | .name = "FS.Symlink", | |
913 | .deliver = afs_deliver_fs_symlink, | |
914 | .abort_to_error = afs_abort_to_error, | |
915 | .destructor = afs_flat_call_destructor, | |
916 | }; | |
917 | ||
918 | /* | |
919 | * create a symbolic link | |
920 | */ | |
921 | int afs_fs_symlink(struct afs_server *server, | |
922 | struct key *key, | |
923 | struct afs_vnode *vnode, | |
924 | const char *name, | |
925 | const char *contents, | |
926 | struct afs_fid *newfid, | |
927 | struct afs_file_status *newstatus, | |
928 | const struct afs_wait_mode *wait_mode) | |
929 | { | |
930 | struct afs_call *call; | |
931 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
932 | __be32 *bp; | |
933 | ||
934 | _enter(""); | |
935 | ||
936 | namesz = strlen(name); | |
937 | padsz = (4 - (namesz & 3)) & 3; | |
938 | ||
939 | c_namesz = strlen(contents); | |
940 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
941 | ||
942 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
943 | ||
944 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
945 | (3 + 21 + 21 + 6) * 4); | |
946 | if (!call) | |
947 | return -ENOMEM; | |
948 | ||
949 | call->key = key; | |
950 | call->reply = vnode; | |
951 | call->reply2 = newfid; | |
952 | call->reply3 = newstatus; | |
953 | call->service_id = FS_SERVICE; | |
954 | call->port = htons(AFS_FS_PORT); | |
955 | ||
956 | /* marshall the parameters */ | |
957 | bp = call->request; | |
958 | *bp++ = htonl(FSSYMLINK); | |
959 | *bp++ = htonl(vnode->fid.vid); | |
960 | *bp++ = htonl(vnode->fid.vnode); | |
961 | *bp++ = htonl(vnode->fid.unique); | |
962 | *bp++ = htonl(namesz); | |
963 | memcpy(bp, name, namesz); | |
964 | bp = (void *) bp + namesz; | |
965 | if (padsz > 0) { | |
966 | memset(bp, 0, padsz); | |
967 | bp = (void *) bp + padsz; | |
968 | } | |
969 | *bp++ = htonl(c_namesz); | |
970 | memcpy(bp, contents, c_namesz); | |
971 | bp = (void *) bp + c_namesz; | |
972 | if (c_padsz > 0) { | |
973 | memset(bp, 0, c_padsz); | |
974 | bp = (void *) bp + c_padsz; | |
975 | } | |
976 | *bp++ = htonl(AFS_SET_MODE); | |
977 | *bp++ = 0; /* mtime */ | |
978 | *bp++ = 0; /* owner */ | |
979 | *bp++ = 0; /* group */ | |
980 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
981 | *bp++ = 0; /* segment size */ | |
982 | ||
983 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
984 | } | |
985 | ||
986 | /* | |
987 | * deliver reply data to an FS.Rename | |
988 | */ | |
989 | static int afs_deliver_fs_rename(struct afs_call *call, | |
990 | struct sk_buff *skb, bool last) | |
991 | { | |
992 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
993 | const __be32 *bp; | |
994 | ||
995 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
996 | ||
997 | afs_transfer_reply(call, skb); | |
998 | if (!last) | |
999 | return 0; | |
1000 | ||
1001 | if (call->reply_size != call->reply_max) | |
1002 | return -EBADMSG; | |
1003 | ||
1004 | /* unmarshall the reply once we've received all of it */ | |
1005 | bp = call->buffer; | |
31143d5d | 1006 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 1007 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
1008 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
1009 | NULL); | |
260a9803 DH |
1010 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
1011 | ||
1012 | _leave(" = 0 [done]"); | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * FS.Rename operation type | |
1018 | */ | |
1019 | static const struct afs_call_type afs_RXFSRename = { | |
1020 | .name = "FS.Rename", | |
1021 | .deliver = afs_deliver_fs_rename, | |
1022 | .abort_to_error = afs_abort_to_error, | |
1023 | .destructor = afs_flat_call_destructor, | |
1024 | }; | |
1025 | ||
1026 | /* | |
1027 | * create a symbolic link | |
1028 | */ | |
1029 | int afs_fs_rename(struct afs_server *server, | |
1030 | struct key *key, | |
1031 | struct afs_vnode *orig_dvnode, | |
1032 | const char *orig_name, | |
1033 | struct afs_vnode *new_dvnode, | |
1034 | const char *new_name, | |
1035 | const struct afs_wait_mode *wait_mode) | |
1036 | { | |
1037 | struct afs_call *call; | |
1038 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1039 | __be32 *bp; | |
1040 | ||
1041 | _enter(""); | |
1042 | ||
1043 | o_namesz = strlen(orig_name); | |
1044 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1045 | ||
1046 | n_namesz = strlen(new_name); | |
1047 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1048 | ||
1049 | reqsz = (4 * 4) + | |
1050 | 4 + o_namesz + o_padsz + | |
1051 | (3 * 4) + | |
1052 | 4 + n_namesz + n_padsz; | |
1053 | ||
1054 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1055 | if (!call) | |
1056 | return -ENOMEM; | |
1057 | ||
1058 | call->key = key; | |
1059 | call->reply = orig_dvnode; | |
1060 | call->reply2 = new_dvnode; | |
1061 | call->service_id = FS_SERVICE; | |
1062 | call->port = htons(AFS_FS_PORT); | |
1063 | ||
1064 | /* marshall the parameters */ | |
1065 | bp = call->request; | |
1066 | *bp++ = htonl(FSRENAME); | |
1067 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1068 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1069 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1070 | *bp++ = htonl(o_namesz); | |
1071 | memcpy(bp, orig_name, o_namesz); | |
1072 | bp = (void *) bp + o_namesz; | |
1073 | if (o_padsz > 0) { | |
1074 | memset(bp, 0, o_padsz); | |
1075 | bp = (void *) bp + o_padsz; | |
1076 | } | |
1077 | ||
1078 | *bp++ = htonl(new_dvnode->fid.vid); | |
1079 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1080 | *bp++ = htonl(new_dvnode->fid.unique); | |
1081 | *bp++ = htonl(n_namesz); | |
1082 | memcpy(bp, new_name, n_namesz); | |
1083 | bp = (void *) bp + n_namesz; | |
1084 | if (n_padsz > 0) { | |
1085 | memset(bp, 0, n_padsz); | |
1086 | bp = (void *) bp + n_padsz; | |
1087 | } | |
1088 | ||
1089 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1090 | } | |
31143d5d DH |
1091 | |
1092 | /* | |
1093 | * deliver reply data to an FS.StoreData | |
1094 | */ | |
1095 | static int afs_deliver_fs_store_data(struct afs_call *call, | |
1096 | struct sk_buff *skb, bool last) | |
1097 | { | |
1098 | struct afs_vnode *vnode = call->reply; | |
1099 | const __be32 *bp; | |
1100 | ||
1101 | _enter(",,%u", last); | |
1102 | ||
1103 | afs_transfer_reply(call, skb); | |
1104 | if (!last) { | |
1105 | _leave(" = 0 [more]"); | |
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | if (call->reply_size != call->reply_max) { | |
1110 | _leave(" = -EBADMSG [%u != %u]", | |
1111 | call->reply_size, call->reply_max); | |
1112 | return -EBADMSG; | |
1113 | } | |
1114 | ||
1115 | /* unmarshall the reply once we've received all of it */ | |
1116 | bp = call->buffer; | |
1117 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1118 | &call->store_version); | |
1119 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1120 | ||
1121 | afs_pages_written_back(vnode, call); | |
1122 | ||
1123 | _leave(" = 0 [done]"); | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | /* | |
1128 | * FS.StoreData operation type | |
1129 | */ | |
1130 | static const struct afs_call_type afs_RXFSStoreData = { | |
1131 | .name = "FS.StoreData", | |
1132 | .deliver = afs_deliver_fs_store_data, | |
1133 | .abort_to_error = afs_abort_to_error, | |
1134 | .destructor = afs_flat_call_destructor, | |
1135 | }; | |
1136 | ||
b9b1f8d5 DH |
1137 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1138 | .name = "FS.StoreData64", | |
1139 | .deliver = afs_deliver_fs_store_data, | |
1140 | .abort_to_error = afs_abort_to_error, | |
1141 | .destructor = afs_flat_call_destructor, | |
1142 | }; | |
1143 | ||
1144 | /* | |
1145 | * store a set of pages to a very large file | |
1146 | */ | |
1147 | static int afs_fs_store_data64(struct afs_server *server, | |
1148 | struct afs_writeback *wb, | |
1149 | pgoff_t first, pgoff_t last, | |
1150 | unsigned offset, unsigned to, | |
1151 | loff_t size, loff_t pos, loff_t i_size, | |
1152 | const struct afs_wait_mode *wait_mode) | |
1153 | { | |
1154 | struct afs_vnode *vnode = wb->vnode; | |
1155 | struct afs_call *call; | |
1156 | __be32 *bp; | |
1157 | ||
1158 | _enter(",%x,{%x:%u},,", | |
1159 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1160 | ||
1161 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1162 | (4 + 6 + 3 * 2) * 4, | |
1163 | (21 + 6) * 4); | |
1164 | if (!call) | |
1165 | return -ENOMEM; | |
1166 | ||
1167 | call->wb = wb; | |
1168 | call->key = wb->key; | |
1169 | call->reply = vnode; | |
1170 | call->service_id = FS_SERVICE; | |
1171 | call->port = htons(AFS_FS_PORT); | |
1172 | call->mapping = vnode->vfs_inode.i_mapping; | |
1173 | call->first = first; | |
1174 | call->last = last; | |
1175 | call->first_offset = offset; | |
1176 | call->last_to = to; | |
1177 | call->send_pages = true; | |
1178 | call->store_version = vnode->status.data_version + 1; | |
1179 | ||
1180 | /* marshall the parameters */ | |
1181 | bp = call->request; | |
1182 | *bp++ = htonl(FSSTOREDATA64); | |
1183 | *bp++ = htonl(vnode->fid.vid); | |
1184 | *bp++ = htonl(vnode->fid.vnode); | |
1185 | *bp++ = htonl(vnode->fid.unique); | |
1186 | ||
1187 | *bp++ = 0; /* mask */ | |
1188 | *bp++ = 0; /* mtime */ | |
1189 | *bp++ = 0; /* owner */ | |
1190 | *bp++ = 0; /* group */ | |
1191 | *bp++ = 0; /* unix mode */ | |
1192 | *bp++ = 0; /* segment size */ | |
1193 | ||
1194 | *bp++ = htonl(pos >> 32); | |
1195 | *bp++ = htonl((u32) pos); | |
1196 | *bp++ = htonl(size >> 32); | |
1197 | *bp++ = htonl((u32) size); | |
1198 | *bp++ = htonl(i_size >> 32); | |
1199 | *bp++ = htonl((u32) i_size); | |
1200 | ||
1201 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1202 | } | |
1203 | ||
31143d5d DH |
1204 | /* |
1205 | * store a set of pages | |
1206 | */ | |
1207 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1208 | pgoff_t first, pgoff_t last, | |
1209 | unsigned offset, unsigned to, | |
1210 | const struct afs_wait_mode *wait_mode) | |
1211 | { | |
1212 | struct afs_vnode *vnode = wb->vnode; | |
1213 | struct afs_call *call; | |
1214 | loff_t size, pos, i_size; | |
1215 | __be32 *bp; | |
1216 | ||
1217 | _enter(",%x,{%x:%u},,", | |
1218 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1219 | ||
1220 | size = to - offset; | |
1221 | if (first != last) | |
1222 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1223 | pos = (loff_t)first << PAGE_SHIFT; | |
1224 | pos += offset; | |
1225 | ||
1226 | i_size = i_size_read(&vnode->vfs_inode); | |
1227 | if (pos + size > i_size) | |
1228 | i_size = size + pos; | |
1229 | ||
1230 | _debug("size %llx, at %llx, i_size %llx", | |
1231 | (unsigned long long) size, (unsigned long long) pos, | |
1232 | (unsigned long long) i_size); | |
1233 | ||
b9b1f8d5 DH |
1234 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1235 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
1236 | size, pos, i_size, wait_mode); | |
31143d5d DH |
1237 | |
1238 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1239 | (4 + 6 + 3) * 4, | |
1240 | (21 + 6) * 4); | |
1241 | if (!call) | |
1242 | return -ENOMEM; | |
1243 | ||
1244 | call->wb = wb; | |
1245 | call->key = wb->key; | |
1246 | call->reply = vnode; | |
1247 | call->service_id = FS_SERVICE; | |
1248 | call->port = htons(AFS_FS_PORT); | |
1249 | call->mapping = vnode->vfs_inode.i_mapping; | |
1250 | call->first = first; | |
1251 | call->last = last; | |
1252 | call->first_offset = offset; | |
1253 | call->last_to = to; | |
1254 | call->send_pages = true; | |
1255 | call->store_version = vnode->status.data_version + 1; | |
1256 | ||
1257 | /* marshall the parameters */ | |
1258 | bp = call->request; | |
1259 | *bp++ = htonl(FSSTOREDATA); | |
1260 | *bp++ = htonl(vnode->fid.vid); | |
1261 | *bp++ = htonl(vnode->fid.vnode); | |
1262 | *bp++ = htonl(vnode->fid.unique); | |
1263 | ||
1264 | *bp++ = 0; /* mask */ | |
1265 | *bp++ = 0; /* mtime */ | |
1266 | *bp++ = 0; /* owner */ | |
1267 | *bp++ = 0; /* group */ | |
1268 | *bp++ = 0; /* unix mode */ | |
1269 | *bp++ = 0; /* segment size */ | |
1270 | ||
1271 | *bp++ = htonl(pos); | |
1272 | *bp++ = htonl(size); | |
1273 | *bp++ = htonl(i_size); | |
1274 | ||
1275 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * deliver reply data to an FS.StoreStatus | |
1280 | */ | |
1281 | static int afs_deliver_fs_store_status(struct afs_call *call, | |
1282 | struct sk_buff *skb, bool last) | |
1283 | { | |
1284 | afs_dataversion_t *store_version; | |
1285 | struct afs_vnode *vnode = call->reply; | |
1286 | const __be32 *bp; | |
1287 | ||
1288 | _enter(",,%u", last); | |
1289 | ||
1290 | afs_transfer_reply(call, skb); | |
1291 | if (!last) { | |
1292 | _leave(" = 0 [more]"); | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | if (call->reply_size != call->reply_max) { | |
1297 | _leave(" = -EBADMSG [%u != %u]", | |
1298 | call->reply_size, call->reply_max); | |
1299 | return -EBADMSG; | |
1300 | } | |
1301 | ||
1302 | /* unmarshall the reply once we've received all of it */ | |
1303 | store_version = NULL; | |
1304 | if (call->operation_ID == FSSTOREDATA) | |
1305 | store_version = &call->store_version; | |
1306 | ||
1307 | bp = call->buffer; | |
1308 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1309 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1310 | ||
1311 | _leave(" = 0 [done]"); | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | /* | |
1316 | * FS.StoreStatus operation type | |
1317 | */ | |
1318 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1319 | .name = "FS.StoreStatus", | |
1320 | .deliver = afs_deliver_fs_store_status, | |
1321 | .abort_to_error = afs_abort_to_error, | |
1322 | .destructor = afs_flat_call_destructor, | |
1323 | }; | |
1324 | ||
1325 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1326 | .name = "FS.StoreData", | |
1327 | .deliver = afs_deliver_fs_store_status, | |
1328 | .abort_to_error = afs_abort_to_error, | |
1329 | .destructor = afs_flat_call_destructor, | |
1330 | }; | |
1331 | ||
b9b1f8d5 DH |
1332 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1333 | .name = "FS.StoreData64", | |
1334 | .deliver = afs_deliver_fs_store_status, | |
1335 | .abort_to_error = afs_abort_to_error, | |
1336 | .destructor = afs_flat_call_destructor, | |
1337 | }; | |
1338 | ||
1339 | /* | |
1340 | * set the attributes on a very large file, using FS.StoreData rather than | |
1341 | * FS.StoreStatus so as to alter the file size also | |
1342 | */ | |
1343 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1344 | struct afs_vnode *vnode, struct iattr *attr, | |
1345 | const struct afs_wait_mode *wait_mode) | |
1346 | { | |
1347 | struct afs_call *call; | |
1348 | __be32 *bp; | |
1349 | ||
1350 | _enter(",%x,{%x:%u},,", | |
1351 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1352 | ||
1353 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1354 | ||
1355 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1356 | (4 + 6 + 3 * 2) * 4, | |
1357 | (21 + 6) * 4); | |
1358 | if (!call) | |
1359 | return -ENOMEM; | |
1360 | ||
1361 | call->key = key; | |
1362 | call->reply = vnode; | |
1363 | call->service_id = FS_SERVICE; | |
1364 | call->port = htons(AFS_FS_PORT); | |
1365 | call->store_version = vnode->status.data_version + 1; | |
1366 | call->operation_ID = FSSTOREDATA; | |
1367 | ||
1368 | /* marshall the parameters */ | |
1369 | bp = call->request; | |
1370 | *bp++ = htonl(FSSTOREDATA64); | |
1371 | *bp++ = htonl(vnode->fid.vid); | |
1372 | *bp++ = htonl(vnode->fid.vnode); | |
1373 | *bp++ = htonl(vnode->fid.unique); | |
1374 | ||
1375 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1376 | ||
1377 | *bp++ = 0; /* position of start of write */ | |
1378 | *bp++ = 0; | |
1379 | *bp++ = 0; /* size of write */ | |
1380 | *bp++ = 0; | |
1381 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1382 | *bp++ = htonl((u32) attr->ia_size); | |
1383 | ||
1384 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1385 | } | |
1386 | ||
31143d5d DH |
1387 | /* |
1388 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1389 | * so as to alter the file size also | |
1390 | */ | |
1391 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1392 | struct afs_vnode *vnode, struct iattr *attr, | |
1393 | const struct afs_wait_mode *wait_mode) | |
1394 | { | |
1395 | struct afs_call *call; | |
1396 | __be32 *bp; | |
1397 | ||
1398 | _enter(",%x,{%x:%u},,", | |
1399 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1400 | ||
1401 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1402 | if (attr->ia_size >> 32) |
1403 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
1404 | wait_mode); | |
31143d5d DH |
1405 | |
1406 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1407 | (4 + 6 + 3) * 4, | |
1408 | (21 + 6) * 4); | |
1409 | if (!call) | |
1410 | return -ENOMEM; | |
1411 | ||
1412 | call->key = key; | |
1413 | call->reply = vnode; | |
1414 | call->service_id = FS_SERVICE; | |
1415 | call->port = htons(AFS_FS_PORT); | |
1416 | call->store_version = vnode->status.data_version + 1; | |
1417 | call->operation_ID = FSSTOREDATA; | |
1418 | ||
1419 | /* marshall the parameters */ | |
1420 | bp = call->request; | |
1421 | *bp++ = htonl(FSSTOREDATA); | |
1422 | *bp++ = htonl(vnode->fid.vid); | |
1423 | *bp++ = htonl(vnode->fid.vnode); | |
1424 | *bp++ = htonl(vnode->fid.unique); | |
1425 | ||
1426 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1427 | ||
1428 | *bp++ = 0; /* position of start of write */ | |
1429 | *bp++ = 0; /* size of write */ | |
1430 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1431 | ||
1432 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1433 | } | |
1434 | ||
1435 | /* | |
1436 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1437 | * size, and FS.StoreStatus otherwise | |
1438 | */ | |
1439 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1440 | struct afs_vnode *vnode, struct iattr *attr, | |
1441 | const struct afs_wait_mode *wait_mode) | |
1442 | { | |
1443 | struct afs_call *call; | |
1444 | __be32 *bp; | |
1445 | ||
1446 | if (attr->ia_valid & ATTR_SIZE) | |
1447 | return afs_fs_setattr_size(server, key, vnode, attr, | |
1448 | wait_mode); | |
1449 | ||
1450 | _enter(",%x,{%x:%u},,", | |
1451 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1452 | ||
1453 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1454 | (4 + 6) * 4, | |
1455 | (21 + 6) * 4); | |
1456 | if (!call) | |
1457 | return -ENOMEM; | |
1458 | ||
1459 | call->key = key; | |
1460 | call->reply = vnode; | |
1461 | call->service_id = FS_SERVICE; | |
1462 | call->port = htons(AFS_FS_PORT); | |
1463 | call->operation_ID = FSSTORESTATUS; | |
1464 | ||
1465 | /* marshall the parameters */ | |
1466 | bp = call->request; | |
1467 | *bp++ = htonl(FSSTORESTATUS); | |
1468 | *bp++ = htonl(vnode->fid.vid); | |
1469 | *bp++ = htonl(vnode->fid.vnode); | |
1470 | *bp++ = htonl(vnode->fid.unique); | |
1471 | ||
1472 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1473 | ||
1474 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1475 | } | |
45222b9e DH |
1476 | |
1477 | /* | |
1478 | * deliver reply data to an FS.GetVolumeStatus | |
1479 | */ | |
1480 | static int afs_deliver_fs_get_volume_status(struct afs_call *call, | |
1481 | struct sk_buff *skb, bool last) | |
1482 | { | |
1483 | const __be32 *bp; | |
1484 | char *p; | |
1485 | int ret; | |
1486 | ||
1487 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
1488 | ||
1489 | switch (call->unmarshall) { | |
1490 | case 0: | |
1491 | call->offset = 0; | |
1492 | call->unmarshall++; | |
1493 | ||
1494 | /* extract the returned status record */ | |
1495 | case 1: | |
1496 | _debug("extract status"); | |
1497 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1498 | 12 * 4); | |
1499 | switch (ret) { | |
1500 | case 0: break; | |
1501 | case -EAGAIN: return 0; | |
1502 | default: return ret; | |
1503 | } | |
1504 | ||
1505 | bp = call->buffer; | |
1506 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); | |
1507 | call->offset = 0; | |
1508 | call->unmarshall++; | |
1509 | ||
1510 | /* extract the volume name length */ | |
1511 | case 2: | |
1512 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
1513 | switch (ret) { | |
1514 | case 0: break; | |
1515 | case -EAGAIN: return 0; | |
1516 | default: return ret; | |
1517 | } | |
1518 | ||
1519 | call->count = ntohl(call->tmp); | |
1520 | _debug("volname length: %u", call->count); | |
1521 | if (call->count >= AFSNAMEMAX) | |
1522 | return -EBADMSG; | |
1523 | call->offset = 0; | |
1524 | call->unmarshall++; | |
1525 | ||
1526 | /* extract the volume name */ | |
1527 | case 3: | |
1528 | _debug("extract volname"); | |
1529 | if (call->count > 0) { | |
1530 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1531 | call->count); | |
1532 | switch (ret) { | |
1533 | case 0: break; | |
1534 | case -EAGAIN: return 0; | |
1535 | default: return ret; | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | p = call->reply3; | |
1540 | p[call->count] = 0; | |
1541 | _debug("volname '%s'", p); | |
1542 | ||
1543 | call->offset = 0; | |
1544 | call->unmarshall++; | |
1545 | ||
1546 | /* extract the volume name padding */ | |
1547 | if ((call->count & 3) == 0) { | |
1548 | call->unmarshall++; | |
1549 | goto no_volname_padding; | |
1550 | } | |
1551 | call->count = 4 - (call->count & 3); | |
1552 | ||
1553 | case 4: | |
1554 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1555 | call->count); | |
1556 | switch (ret) { | |
1557 | case 0: break; | |
1558 | case -EAGAIN: return 0; | |
1559 | default: return ret; | |
1560 | } | |
1561 | ||
1562 | call->offset = 0; | |
1563 | call->unmarshall++; | |
1564 | no_volname_padding: | |
1565 | ||
1566 | /* extract the offline message length */ | |
1567 | case 5: | |
1568 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
1569 | switch (ret) { | |
1570 | case 0: break; | |
1571 | case -EAGAIN: return 0; | |
1572 | default: return ret; | |
1573 | } | |
1574 | ||
1575 | call->count = ntohl(call->tmp); | |
1576 | _debug("offline msg length: %u", call->count); | |
1577 | if (call->count >= AFSNAMEMAX) | |
1578 | return -EBADMSG; | |
1579 | call->offset = 0; | |
1580 | call->unmarshall++; | |
1581 | ||
1582 | /* extract the offline message */ | |
1583 | case 6: | |
1584 | _debug("extract offline"); | |
1585 | if (call->count > 0) { | |
1586 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1587 | call->count); | |
1588 | switch (ret) { | |
1589 | case 0: break; | |
1590 | case -EAGAIN: return 0; | |
1591 | default: return ret; | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | p = call->reply3; | |
1596 | p[call->count] = 0; | |
1597 | _debug("offline '%s'", p); | |
1598 | ||
1599 | call->offset = 0; | |
1600 | call->unmarshall++; | |
1601 | ||
1602 | /* extract the offline message padding */ | |
1603 | if ((call->count & 3) == 0) { | |
1604 | call->unmarshall++; | |
1605 | goto no_offline_padding; | |
1606 | } | |
1607 | call->count = 4 - (call->count & 3); | |
1608 | ||
1609 | case 7: | |
1610 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1611 | call->count); | |
1612 | switch (ret) { | |
1613 | case 0: break; | |
1614 | case -EAGAIN: return 0; | |
1615 | default: return ret; | |
1616 | } | |
1617 | ||
1618 | call->offset = 0; | |
1619 | call->unmarshall++; | |
1620 | no_offline_padding: | |
1621 | ||
1622 | /* extract the message of the day length */ | |
1623 | case 8: | |
1624 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
1625 | switch (ret) { | |
1626 | case 0: break; | |
1627 | case -EAGAIN: return 0; | |
1628 | default: return ret; | |
1629 | } | |
1630 | ||
1631 | call->count = ntohl(call->tmp); | |
1632 | _debug("motd length: %u", call->count); | |
1633 | if (call->count >= AFSNAMEMAX) | |
1634 | return -EBADMSG; | |
1635 | call->offset = 0; | |
1636 | call->unmarshall++; | |
1637 | ||
1638 | /* extract the message of the day */ | |
1639 | case 9: | |
1640 | _debug("extract motd"); | |
1641 | if (call->count > 0) { | |
1642 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1643 | call->count); | |
1644 | switch (ret) { | |
1645 | case 0: break; | |
1646 | case -EAGAIN: return 0; | |
1647 | default: return ret; | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | p = call->reply3; | |
1652 | p[call->count] = 0; | |
1653 | _debug("motd '%s'", p); | |
1654 | ||
1655 | call->offset = 0; | |
1656 | call->unmarshall++; | |
1657 | ||
1658 | /* extract the message of the day padding */ | |
1659 | if ((call->count & 3) == 0) { | |
1660 | call->unmarshall++; | |
1661 | goto no_motd_padding; | |
1662 | } | |
1663 | call->count = 4 - (call->count & 3); | |
1664 | ||
1665 | case 10: | |
1666 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1667 | call->count); | |
1668 | switch (ret) { | |
1669 | case 0: break; | |
1670 | case -EAGAIN: return 0; | |
1671 | default: return ret; | |
1672 | } | |
1673 | ||
1674 | call->offset = 0; | |
1675 | call->unmarshall++; | |
1676 | no_motd_padding: | |
1677 | ||
1678 | case 11: | |
1679 | _debug("trailer %d", skb->len); | |
1680 | if (skb->len != 0) | |
1681 | return -EBADMSG; | |
1682 | break; | |
1683 | } | |
1684 | ||
1685 | if (!last) | |
1686 | return 0; | |
1687 | ||
1688 | _leave(" = 0 [done]"); | |
1689 | return 0; | |
1690 | } | |
1691 | ||
1692 | /* | |
1693 | * destroy an FS.GetVolumeStatus call | |
1694 | */ | |
1695 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1696 | { | |
1697 | kfree(call->reply3); | |
1698 | call->reply3 = NULL; | |
1699 | afs_flat_call_destructor(call); | |
1700 | } | |
1701 | ||
1702 | /* | |
1703 | * FS.GetVolumeStatus operation type | |
1704 | */ | |
1705 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1706 | .name = "FS.GetVolumeStatus", | |
1707 | .deliver = afs_deliver_fs_get_volume_status, | |
1708 | .abort_to_error = afs_abort_to_error, | |
1709 | .destructor = afs_get_volume_status_call_destructor, | |
1710 | }; | |
1711 | ||
1712 | /* | |
1713 | * fetch the status of a volume | |
1714 | */ | |
1715 | int afs_fs_get_volume_status(struct afs_server *server, | |
1716 | struct key *key, | |
1717 | struct afs_vnode *vnode, | |
1718 | struct afs_volume_status *vs, | |
1719 | const struct afs_wait_mode *wait_mode) | |
1720 | { | |
1721 | struct afs_call *call; | |
1722 | __be32 *bp; | |
1723 | void *tmpbuf; | |
1724 | ||
1725 | _enter(""); | |
1726 | ||
1727 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1728 | if (!tmpbuf) | |
1729 | return -ENOMEM; | |
1730 | ||
1731 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); | |
1732 | if (!call) { | |
1733 | kfree(tmpbuf); | |
1734 | return -ENOMEM; | |
1735 | } | |
1736 | ||
1737 | call->key = key; | |
1738 | call->reply = vnode; | |
1739 | call->reply2 = vs; | |
1740 | call->reply3 = tmpbuf; | |
1741 | call->service_id = FS_SERVICE; | |
1742 | call->port = htons(AFS_FS_PORT); | |
1743 | ||
1744 | /* marshall the parameters */ | |
1745 | bp = call->request; | |
1746 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1747 | bp[1] = htonl(vnode->fid.vid); | |
1748 | ||
1749 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1750 | } | |
e8d6c554 DH |
1751 | |
1752 | /* | |
1753 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1754 | */ | |
1755 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call, | |
1756 | struct sk_buff *skb, bool last) | |
1757 | { | |
1758 | const __be32 *bp; | |
1759 | ||
1760 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
1761 | ||
1762 | afs_transfer_reply(call, skb); | |
1763 | if (!last) | |
1764 | return 0; | |
1765 | ||
1766 | if (call->reply_size != call->reply_max) | |
1767 | return -EBADMSG; | |
1768 | ||
1769 | /* unmarshall the reply once we've received all of it */ | |
1770 | bp = call->buffer; | |
1771 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1772 | ||
1773 | _leave(" = 0 [done]"); | |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | /* | |
1778 | * FS.SetLock operation type | |
1779 | */ | |
1780 | static const struct afs_call_type afs_RXFSSetLock = { | |
1781 | .name = "FS.SetLock", | |
1782 | .deliver = afs_deliver_fs_xxxx_lock, | |
1783 | .abort_to_error = afs_abort_to_error, | |
1784 | .destructor = afs_flat_call_destructor, | |
1785 | }; | |
1786 | ||
1787 | /* | |
1788 | * FS.ExtendLock operation type | |
1789 | */ | |
1790 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1791 | .name = "FS.ExtendLock", | |
1792 | .deliver = afs_deliver_fs_xxxx_lock, | |
1793 | .abort_to_error = afs_abort_to_error, | |
1794 | .destructor = afs_flat_call_destructor, | |
1795 | }; | |
1796 | ||
1797 | /* | |
1798 | * FS.ReleaseLock operation type | |
1799 | */ | |
1800 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1801 | .name = "FS.ReleaseLock", | |
1802 | .deliver = afs_deliver_fs_xxxx_lock, | |
1803 | .abort_to_error = afs_abort_to_error, | |
1804 | .destructor = afs_flat_call_destructor, | |
1805 | }; | |
1806 | ||
1807 | /* | |
1808 | * get a lock on a file | |
1809 | */ | |
1810 | int afs_fs_set_lock(struct afs_server *server, | |
1811 | struct key *key, | |
1812 | struct afs_vnode *vnode, | |
1813 | afs_lock_type_t type, | |
1814 | const struct afs_wait_mode *wait_mode) | |
1815 | { | |
1816 | struct afs_call *call; | |
1817 | __be32 *bp; | |
1818 | ||
1819 | _enter(""); | |
1820 | ||
1821 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); | |
1822 | if (!call) | |
1823 | return -ENOMEM; | |
1824 | ||
1825 | call->key = key; | |
1826 | call->reply = vnode; | |
1827 | call->service_id = FS_SERVICE; | |
1828 | call->port = htons(AFS_FS_PORT); | |
1829 | ||
1830 | /* marshall the parameters */ | |
1831 | bp = call->request; | |
1832 | *bp++ = htonl(FSSETLOCK); | |
1833 | *bp++ = htonl(vnode->fid.vid); | |
1834 | *bp++ = htonl(vnode->fid.vnode); | |
1835 | *bp++ = htonl(vnode->fid.unique); | |
1836 | *bp++ = htonl(type); | |
1837 | ||
1838 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1839 | } | |
1840 | ||
1841 | /* | |
1842 | * extend a lock on a file | |
1843 | */ | |
1844 | int afs_fs_extend_lock(struct afs_server *server, | |
1845 | struct key *key, | |
1846 | struct afs_vnode *vnode, | |
1847 | const struct afs_wait_mode *wait_mode) | |
1848 | { | |
1849 | struct afs_call *call; | |
1850 | __be32 *bp; | |
1851 | ||
1852 | _enter(""); | |
1853 | ||
1854 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); | |
1855 | if (!call) | |
1856 | return -ENOMEM; | |
1857 | ||
1858 | call->key = key; | |
1859 | call->reply = vnode; | |
1860 | call->service_id = FS_SERVICE; | |
1861 | call->port = htons(AFS_FS_PORT); | |
1862 | ||
1863 | /* marshall the parameters */ | |
1864 | bp = call->request; | |
1865 | *bp++ = htonl(FSEXTENDLOCK); | |
1866 | *bp++ = htonl(vnode->fid.vid); | |
1867 | *bp++ = htonl(vnode->fid.vnode); | |
1868 | *bp++ = htonl(vnode->fid.unique); | |
1869 | ||
1870 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1871 | } | |
1872 | ||
1873 | /* | |
1874 | * release a lock on a file | |
1875 | */ | |
1876 | int afs_fs_release_lock(struct afs_server *server, | |
1877 | struct key *key, | |
1878 | struct afs_vnode *vnode, | |
1879 | const struct afs_wait_mode *wait_mode) | |
1880 | { | |
1881 | struct afs_call *call; | |
1882 | __be32 *bp; | |
1883 | ||
1884 | _enter(""); | |
1885 | ||
1886 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); | |
1887 | if (!call) | |
1888 | return -ENOMEM; | |
1889 | ||
1890 | call->key = key; | |
1891 | call->reply = vnode; | |
1892 | call->service_id = FS_SERVICE; | |
1893 | call->port = htons(AFS_FS_PORT); | |
1894 | ||
1895 | /* marshall the parameters */ | |
1896 | bp = call->request; | |
1897 | *bp++ = htonl(FSRELEASELOCK); | |
1898 | *bp++ = htonl(vnode->fid.vid); | |
1899 | *bp++ = htonl(vnode->fid.vnode); | |
1900 | *bp++ = htonl(vnode->fid.unique); | |
1901 | ||
1902 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1903 | } |