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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 | 44 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
a0a5386a EB |
45 | kuid_t owner; |
46 | kgid_t group; | |
08e0e7c8 DH |
47 | |
48 | #define EXTRACT(DST) \ | |
49 | do { \ | |
50 | u32 x = ntohl(*bp++); \ | |
51 | changed |= DST - x; \ | |
52 | DST = x; \ | |
53 | } while (0) | |
54 | ||
260a9803 DH |
55 | status->if_version = ntohl(*bp++); |
56 | EXTRACT(status->type); | |
57 | EXTRACT(status->nlink); | |
58 | size = ntohl(*bp++); | |
08e0e7c8 | 59 | data_version = ntohl(*bp++); |
260a9803 | 60 | EXTRACT(status->author); |
a0a5386a EB |
61 | owner = make_kuid(&init_user_ns, ntohl(*bp++)); |
62 | changed |= !uid_eq(owner, status->owner); | |
63 | status->owner = owner; | |
260a9803 DH |
64 | EXTRACT(status->caller_access); /* call ticket dependent */ |
65 | EXTRACT(status->anon_access); | |
66 | EXTRACT(status->mode); | |
67 | EXTRACT(status->parent.vnode); | |
68 | EXTRACT(status->parent.unique); | |
08e0e7c8 | 69 | bp++; /* seg size */ |
260a9803 DH |
70 | status->mtime_client = ntohl(*bp++); |
71 | status->mtime_server = ntohl(*bp++); | |
a0a5386a EB |
72 | group = make_kgid(&init_user_ns, ntohl(*bp++)); |
73 | changed |= !gid_eq(group, status->group); | |
74 | status->group = group; | |
08e0e7c8 DH |
75 | bp++; /* sync counter */ |
76 | data_version |= (u64) ntohl(*bp++) << 32; | |
e8d6c554 | 77 | EXTRACT(status->lock_count); |
260a9803 DH |
78 | size |= (u64) ntohl(*bp++) << 32; |
79 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
80 | *_bp = bp; |
81 | ||
260a9803 DH |
82 | if (size != status->size) { |
83 | status->size = size; | |
84 | changed |= true; | |
08e0e7c8 | 85 | } |
260a9803 | 86 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
87 | |
88 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
89 | status->mtime_client, status->mtime_server); |
90 | ||
91 | if (vnode) { | |
92 | status->parent.vid = vnode->fid.vid; | |
93 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
94 | _debug("vnode changed"); | |
95 | i_size_write(&vnode->vfs_inode, size); | |
96 | vnode->vfs_inode.i_uid = status->owner; | |
97 | vnode->vfs_inode.i_gid = status->group; | |
d6e43f75 | 98 | vnode->vfs_inode.i_generation = vnode->fid.unique; |
bfe86848 | 99 | set_nlink(&vnode->vfs_inode, status->nlink); |
260a9803 DH |
100 | |
101 | mode = vnode->vfs_inode.i_mode; | |
102 | mode &= ~S_IALLUGO; | |
103 | mode |= status->mode; | |
104 | barrier(); | |
105 | vnode->vfs_inode.i_mode = mode; | |
106 | } | |
107 | ||
108 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server; | |
109 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; | |
110 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
d6e43f75 | 111 | vnode->vfs_inode.i_version = data_version; |
260a9803 DH |
112 | } |
113 | ||
31143d5d DH |
114 | expected_version = status->data_version; |
115 | if (store_version) | |
116 | expected_version = *store_version; | |
117 | ||
118 | if (expected_version != data_version) { | |
260a9803 DH |
119 | status->data_version = data_version; |
120 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
121 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
122 | (unsigned long long) data_version, |
123 | vnode->fid.vid, vnode->fid.vnode); | |
260a9803 DH |
124 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
125 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); | |
126 | } | |
31143d5d DH |
127 | } else if (store_version) { |
128 | status->data_version = data_version; | |
1da177e4 | 129 | } |
ec26815a | 130 | } |
1da177e4 | 131 | |
1da177e4 | 132 | /* |
08e0e7c8 | 133 | * decode an AFSCallBack block |
1da177e4 | 134 | */ |
08e0e7c8 | 135 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
1da177e4 | 136 | { |
08e0e7c8 | 137 | const __be32 *bp = *_bp; |
1da177e4 | 138 | |
08e0e7c8 DH |
139 | vnode->cb_version = ntohl(*bp++); |
140 | vnode->cb_expiry = ntohl(*bp++); | |
141 | vnode->cb_type = ntohl(*bp++); | |
142 | vnode->cb_expires = vnode->cb_expiry + get_seconds(); | |
143 | *_bp = bp; | |
ec26815a | 144 | } |
1da177e4 | 145 | |
260a9803 DH |
146 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
147 | struct afs_callback *cb) | |
148 | { | |
149 | const __be32 *bp = *_bp; | |
150 | ||
151 | cb->version = ntohl(*bp++); | |
152 | cb->expiry = ntohl(*bp++); | |
153 | cb->type = ntohl(*bp++); | |
154 | *_bp = bp; | |
155 | } | |
156 | ||
1da177e4 | 157 | /* |
08e0e7c8 | 158 | * decode an AFSVolSync block |
1da177e4 | 159 | */ |
08e0e7c8 DH |
160 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
161 | struct afs_volsync *volsync) | |
1da177e4 | 162 | { |
08e0e7c8 | 163 | const __be32 *bp = *_bp; |
1da177e4 | 164 | |
08e0e7c8 DH |
165 | volsync->creation = ntohl(*bp++); |
166 | bp++; /* spare2 */ | |
167 | bp++; /* spare3 */ | |
168 | bp++; /* spare4 */ | |
169 | bp++; /* spare5 */ | |
170 | bp++; /* spare6 */ | |
171 | *_bp = bp; | |
172 | } | |
1da177e4 | 173 | |
31143d5d DH |
174 | /* |
175 | * encode the requested attributes into an AFSStoreStatus block | |
176 | */ | |
177 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
178 | { | |
179 | __be32 *bp = *_bp; | |
180 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
181 | ||
182 | mask = 0; | |
183 | if (attr->ia_valid & ATTR_MTIME) { | |
184 | mask |= AFS_SET_MTIME; | |
185 | mtime = attr->ia_mtime.tv_sec; | |
186 | } | |
187 | ||
188 | if (attr->ia_valid & ATTR_UID) { | |
189 | mask |= AFS_SET_OWNER; | |
a0a5386a | 190 | owner = from_kuid(&init_user_ns, attr->ia_uid); |
31143d5d DH |
191 | } |
192 | ||
193 | if (attr->ia_valid & ATTR_GID) { | |
194 | mask |= AFS_SET_GROUP; | |
a0a5386a | 195 | group = from_kgid(&init_user_ns, attr->ia_gid); |
31143d5d DH |
196 | } |
197 | ||
198 | if (attr->ia_valid & ATTR_MODE) { | |
199 | mask |= AFS_SET_MODE; | |
200 | mode = attr->ia_mode & S_IALLUGO; | |
201 | } | |
202 | ||
203 | *bp++ = htonl(mask); | |
204 | *bp++ = htonl(mtime); | |
205 | *bp++ = htonl(owner); | |
206 | *bp++ = htonl(group); | |
207 | *bp++ = htonl(mode); | |
208 | *bp++ = 0; /* segment size */ | |
209 | *_bp = bp; | |
210 | } | |
211 | ||
45222b9e DH |
212 | /* |
213 | * decode an AFSFetchVolumeStatus block | |
214 | */ | |
215 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, | |
216 | struct afs_volume_status *vs) | |
217 | { | |
218 | const __be32 *bp = *_bp; | |
219 | ||
220 | vs->vid = ntohl(*bp++); | |
221 | vs->parent_id = ntohl(*bp++); | |
222 | vs->online = ntohl(*bp++); | |
223 | vs->in_service = ntohl(*bp++); | |
224 | vs->blessed = ntohl(*bp++); | |
225 | vs->needs_salvage = ntohl(*bp++); | |
226 | vs->type = ntohl(*bp++); | |
227 | vs->min_quota = ntohl(*bp++); | |
228 | vs->max_quota = ntohl(*bp++); | |
229 | vs->blocks_in_use = ntohl(*bp++); | |
230 | vs->part_blocks_avail = ntohl(*bp++); | |
231 | vs->part_max_blocks = ntohl(*bp++); | |
232 | *_bp = bp; | |
233 | } | |
234 | ||
08e0e7c8 DH |
235 | /* |
236 | * deliver reply data to an FS.FetchStatus | |
237 | */ | |
238 | static int afs_deliver_fs_fetch_status(struct afs_call *call, | |
239 | struct sk_buff *skb, bool last) | |
240 | { | |
260a9803 | 241 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 242 | const __be32 *bp; |
372ee163 | 243 | int ret; |
1da177e4 | 244 | |
08e0e7c8 | 245 | _enter(",,%u", last); |
1da177e4 | 246 | |
372ee163 DH |
247 | ret = afs_transfer_reply(call, skb, last); |
248 | if (ret < 0) | |
249 | return ret; | |
1da177e4 | 250 | |
08e0e7c8 DH |
251 | /* unmarshall the reply once we've received all of it */ |
252 | bp = call->buffer; | |
31143d5d | 253 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 254 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
255 | if (call->reply2) |
256 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 257 | |
08e0e7c8 DH |
258 | _leave(" = 0 [done]"); |
259 | return 0; | |
ec26815a | 260 | } |
08e0e7c8 DH |
261 | |
262 | /* | |
263 | * FS.FetchStatus operation type | |
264 | */ | |
265 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 266 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
267 | .deliver = afs_deliver_fs_fetch_status, |
268 | .abort_to_error = afs_abort_to_error, | |
269 | .destructor = afs_flat_call_destructor, | |
270 | }; | |
1da177e4 | 271 | |
1da177e4 LT |
272 | /* |
273 | * fetch the status information for a file | |
274 | */ | |
08e0e7c8 | 275 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 276 | struct key *key, |
08e0e7c8 DH |
277 | struct afs_vnode *vnode, |
278 | struct afs_volsync *volsync, | |
279 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 280 | { |
08e0e7c8 | 281 | struct afs_call *call; |
1da177e4 LT |
282 | __be32 *bp; |
283 | ||
416351f2 | 284 | _enter(",%x,{%x:%u},,", |
260a9803 | 285 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 286 | |
260a9803 | 287 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
288 | if (!call) |
289 | return -ENOMEM; | |
1da177e4 | 290 | |
00d3b7a4 | 291 | call->key = key; |
08e0e7c8 DH |
292 | call->reply = vnode; |
293 | call->reply2 = volsync; | |
294 | call->service_id = FS_SERVICE; | |
295 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
296 | |
297 | /* marshall the parameters */ | |
08e0e7c8 | 298 | bp = call->request; |
1da177e4 LT |
299 | bp[0] = htonl(FSFETCHSTATUS); |
300 | bp[1] = htonl(vnode->fid.vid); | |
301 | bp[2] = htonl(vnode->fid.vnode); | |
302 | bp[3] = htonl(vnode->fid.unique); | |
303 | ||
08e0e7c8 | 304 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 305 | } |
1da177e4 | 306 | |
1da177e4 | 307 | /* |
08e0e7c8 | 308 | * deliver reply data to an FS.FetchData |
1da177e4 | 309 | */ |
08e0e7c8 DH |
310 | static int afs_deliver_fs_fetch_data(struct afs_call *call, |
311 | struct sk_buff *skb, bool last) | |
1da177e4 | 312 | { |
260a9803 | 313 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 DH |
314 | const __be32 *bp; |
315 | struct page *page; | |
316 | void *buffer; | |
1da177e4 | 317 | int ret; |
1da177e4 | 318 | |
08e0e7c8 DH |
319 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
320 | ||
321 | switch (call->unmarshall) { | |
322 | case 0: | |
323 | call->offset = 0; | |
324 | call->unmarshall++; | |
b9b1f8d5 DH |
325 | if (call->operation_ID != FSFETCHDATA64) { |
326 | call->unmarshall++; | |
327 | goto no_msw; | |
328 | } | |
08e0e7c8 | 329 | |
b9b1f8d5 DH |
330 | /* extract the upper part of the returned data length of an |
331 | * FSFETCHDATA64 op (which should always be 0 using this | |
332 | * client) */ | |
08e0e7c8 | 333 | case 1: |
b9b1f8d5 DH |
334 | _debug("extract data length (MSW)"); |
335 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
372ee163 DH |
336 | if (ret < 0) |
337 | return ret; | |
b9b1f8d5 DH |
338 | |
339 | call->count = ntohl(call->tmp); | |
340 | _debug("DATA length MSW: %u", call->count); | |
341 | if (call->count > 0) | |
342 | return -EBADMSG; | |
343 | call->offset = 0; | |
344 | call->unmarshall++; | |
345 | ||
346 | no_msw: | |
347 | /* extract the returned data length */ | |
348 | case 2: | |
08e0e7c8 DH |
349 | _debug("extract data length"); |
350 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
372ee163 DH |
351 | if (ret < 0) |
352 | return ret; | |
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; | |
da4aa36d | 366 | buffer = kmap_atomic(page); |
416351f2 DH |
367 | ret = afs_extract_data(call, skb, last, buffer, |
368 | call->count); | |
da4aa36d | 369 | kunmap_atomic(buffer); |
372ee163 DH |
370 | if (ret < 0) |
371 | return ret; | |
08e0e7c8 | 372 | } |
1da177e4 | 373 | |
08e0e7c8 DH |
374 | call->offset = 0; |
375 | call->unmarshall++; | |
1da177e4 | 376 | |
08e0e7c8 | 377 | /* extract the metadata */ |
b9b1f8d5 | 378 | case 4: |
260a9803 DH |
379 | ret = afs_extract_data(call, skb, last, call->buffer, |
380 | (21 + 3 + 6) * 4); | |
372ee163 DH |
381 | if (ret < 0) |
382 | return ret; | |
08e0e7c8 DH |
383 | |
384 | bp = call->buffer; | |
31143d5d | 385 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 386 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
387 | if (call->reply2) |
388 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
389 | ||
390 | call->offset = 0; | |
391 | call->unmarshall++; | |
1da177e4 | 392 | |
b9b1f8d5 | 393 | case 5: |
372ee163 DH |
394 | ret = afs_data_complete(call, skb, last); |
395 | if (ret < 0) | |
396 | return ret; | |
08e0e7c8 | 397 | break; |
1da177e4 LT |
398 | } |
399 | ||
416351f2 DH |
400 | if (call->count < PAGE_SIZE) { |
401 | _debug("clear"); | |
402 | page = call->reply3; | |
da4aa36d | 403 | buffer = kmap_atomic(page); |
416351f2 | 404 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); |
da4aa36d | 405 | kunmap_atomic(buffer); |
416351f2 DH |
406 | } |
407 | ||
08e0e7c8 DH |
408 | _leave(" = 0 [done]"); |
409 | return 0; | |
ec26815a | 410 | } |
1da177e4 | 411 | |
1da177e4 | 412 | /* |
08e0e7c8 | 413 | * FS.FetchData operation type |
1da177e4 | 414 | */ |
08e0e7c8 | 415 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 416 | .name = "FS.FetchData", |
08e0e7c8 DH |
417 | .deliver = afs_deliver_fs_fetch_data, |
418 | .abort_to_error = afs_abort_to_error, | |
419 | .destructor = afs_flat_call_destructor, | |
420 | }; | |
421 | ||
b9b1f8d5 DH |
422 | static const struct afs_call_type afs_RXFSFetchData64 = { |
423 | .name = "FS.FetchData64", | |
424 | .deliver = afs_deliver_fs_fetch_data, | |
425 | .abort_to_error = afs_abort_to_error, | |
426 | .destructor = afs_flat_call_destructor, | |
427 | }; | |
428 | ||
429 | /* | |
430 | * fetch data from a very large file | |
431 | */ | |
432 | static int afs_fs_fetch_data64(struct afs_server *server, | |
433 | struct key *key, | |
434 | struct afs_vnode *vnode, | |
435 | off_t offset, size_t length, | |
436 | struct page *buffer, | |
437 | const struct afs_wait_mode *wait_mode) | |
438 | { | |
439 | struct afs_call *call; | |
440 | __be32 *bp; | |
441 | ||
442 | _enter(""); | |
443 | ||
444 | ASSERTCMP(length, <, ULONG_MAX); | |
445 | ||
446 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); | |
447 | if (!call) | |
448 | return -ENOMEM; | |
449 | ||
450 | call->key = key; | |
451 | call->reply = vnode; | |
452 | call->reply2 = NULL; /* volsync */ | |
453 | call->reply3 = buffer; | |
454 | call->service_id = FS_SERVICE; | |
455 | call->port = htons(AFS_FS_PORT); | |
456 | call->operation_ID = FSFETCHDATA64; | |
457 | ||
458 | /* marshall the parameters */ | |
459 | bp = call->request; | |
460 | bp[0] = htonl(FSFETCHDATA64); | |
461 | bp[1] = htonl(vnode->fid.vid); | |
462 | bp[2] = htonl(vnode->fid.vnode); | |
463 | bp[3] = htonl(vnode->fid.unique); | |
464 | bp[4] = htonl(upper_32_bits(offset)); | |
465 | bp[5] = htonl((u32) offset); | |
466 | bp[6] = 0; | |
467 | bp[7] = htonl((u32) length); | |
468 | ||
469 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
470 | } | |
471 | ||
08e0e7c8 DH |
472 | /* |
473 | * fetch data from a file | |
474 | */ | |
475 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 476 | struct key *key, |
08e0e7c8 DH |
477 | struct afs_vnode *vnode, |
478 | off_t offset, size_t length, | |
479 | struct page *buffer, | |
08e0e7c8 | 480 | const struct afs_wait_mode *wait_mode) |
1da177e4 | 481 | { |
08e0e7c8 | 482 | struct afs_call *call; |
1da177e4 LT |
483 | __be32 *bp; |
484 | ||
b9b1f8d5 DH |
485 | if (upper_32_bits(offset) || upper_32_bits(offset + length)) |
486 | return afs_fs_fetch_data64(server, key, vnode, offset, length, | |
487 | buffer, wait_mode); | |
488 | ||
08e0e7c8 | 489 | _enter(""); |
1da177e4 | 490 | |
260a9803 | 491 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
492 | if (!call) |
493 | return -ENOMEM; | |
1da177e4 | 494 | |
00d3b7a4 | 495 | call->key = key; |
08e0e7c8 | 496 | call->reply = vnode; |
260a9803 | 497 | call->reply2 = NULL; /* volsync */ |
08e0e7c8 DH |
498 | call->reply3 = buffer; |
499 | call->service_id = FS_SERVICE; | |
500 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 501 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
502 | |
503 | /* marshall the parameters */ | |
08e0e7c8 DH |
504 | bp = call->request; |
505 | bp[0] = htonl(FSFETCHDATA); | |
506 | bp[1] = htonl(vnode->fid.vid); | |
507 | bp[2] = htonl(vnode->fid.vnode); | |
508 | bp[3] = htonl(vnode->fid.unique); | |
509 | bp[4] = htonl(offset); | |
510 | bp[5] = htonl(length); | |
1da177e4 | 511 | |
08e0e7c8 DH |
512 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
513 | } | |
1da177e4 | 514 | |
08e0e7c8 DH |
515 | /* |
516 | * deliver reply data to an FS.GiveUpCallBacks | |
517 | */ | |
518 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call, | |
519 | struct sk_buff *skb, bool last) | |
520 | { | |
521 | _enter(",{%u},%d", skb->len, last); | |
1da177e4 | 522 | |
372ee163 DH |
523 | /* shouldn't be any reply data */ |
524 | return afs_data_complete(call, skb, last); | |
ec26815a | 525 | } |
1da177e4 | 526 | |
1da177e4 | 527 | /* |
08e0e7c8 DH |
528 | * FS.GiveUpCallBacks operation type |
529 | */ | |
530 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 531 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
532 | .deliver = afs_deliver_fs_give_up_callbacks, |
533 | .abort_to_error = afs_abort_to_error, | |
534 | .destructor = afs_flat_call_destructor, | |
535 | }; | |
536 | ||
537 | /* | |
538 | * give up a set of callbacks | |
539 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 540 | */ |
08e0e7c8 DH |
541 | int afs_fs_give_up_callbacks(struct afs_server *server, |
542 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 543 | { |
08e0e7c8 DH |
544 | struct afs_call *call; |
545 | size_t ncallbacks; | |
546 | __be32 *bp, *tp; | |
547 | int loop; | |
1da177e4 | 548 | |
08e0e7c8 DH |
549 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
550 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 551 | |
08e0e7c8 | 552 | _enter("{%zu},", ncallbacks); |
1da177e4 | 553 | |
08e0e7c8 DH |
554 | if (ncallbacks == 0) |
555 | return 0; | |
556 | if (ncallbacks > AFSCBMAX) | |
557 | ncallbacks = AFSCBMAX; | |
1da177e4 | 558 | |
08e0e7c8 | 559 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 560 | |
08e0e7c8 DH |
561 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
562 | 12 + ncallbacks * 6 * 4, 0); | |
563 | if (!call) | |
564 | return -ENOMEM; | |
565 | ||
566 | call->service_id = FS_SERVICE; | |
567 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
568 | |
569 | /* marshall the parameters */ | |
08e0e7c8 DH |
570 | bp = call->request; |
571 | tp = bp + 2 + ncallbacks * 3; | |
572 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
573 | *bp++ = htonl(ncallbacks); | |
574 | *tp++ = htonl(ncallbacks); | |
575 | ||
576 | atomic_sub(ncallbacks, &server->cb_break_n); | |
577 | for (loop = ncallbacks; loop > 0; loop--) { | |
578 | struct afs_callback *cb = | |
579 | &server->cb_break[server->cb_break_tail]; | |
580 | ||
581 | *bp++ = htonl(cb->fid.vid); | |
582 | *bp++ = htonl(cb->fid.vnode); | |
583 | *bp++ = htonl(cb->fid.unique); | |
584 | *tp++ = htonl(cb->version); | |
585 | *tp++ = htonl(cb->expiry); | |
586 | *tp++ = htonl(cb->type); | |
587 | smp_mb(); | |
588 | server->cb_break_tail = | |
589 | (server->cb_break_tail + 1) & | |
590 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
591 | } |
592 | ||
08e0e7c8 DH |
593 | ASSERT(ncallbacks > 0); |
594 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 595 | |
08e0e7c8 | 596 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 597 | } |
260a9803 DH |
598 | |
599 | /* | |
600 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
601 | */ | |
602 | static int afs_deliver_fs_create_vnode(struct afs_call *call, | |
603 | struct sk_buff *skb, bool last) | |
604 | { | |
605 | struct afs_vnode *vnode = call->reply; | |
606 | const __be32 *bp; | |
372ee163 | 607 | int ret; |
260a9803 DH |
608 | |
609 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
610 | ||
372ee163 DH |
611 | ret = afs_transfer_reply(call, skb, last); |
612 | if (ret < 0) | |
613 | return ret; | |
260a9803 DH |
614 | |
615 | /* unmarshall the reply once we've received all of it */ | |
616 | bp = call->buffer; | |
617 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
618 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
619 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
620 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
621 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
622 | ||
623 | _leave(" = 0 [done]"); | |
624 | return 0; | |
625 | } | |
626 | ||
627 | /* | |
628 | * FS.CreateFile and FS.MakeDir operation type | |
629 | */ | |
630 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
631 | .name = "FS.CreateXXXX", | |
632 | .deliver = afs_deliver_fs_create_vnode, | |
633 | .abort_to_error = afs_abort_to_error, | |
634 | .destructor = afs_flat_call_destructor, | |
635 | }; | |
636 | ||
637 | /* | |
638 | * create a file or make a directory | |
639 | */ | |
640 | int afs_fs_create(struct afs_server *server, | |
641 | struct key *key, | |
642 | struct afs_vnode *vnode, | |
643 | const char *name, | |
644 | umode_t mode, | |
645 | struct afs_fid *newfid, | |
646 | struct afs_file_status *newstatus, | |
647 | struct afs_callback *newcb, | |
648 | const struct afs_wait_mode *wait_mode) | |
649 | { | |
650 | struct afs_call *call; | |
651 | size_t namesz, reqsz, padsz; | |
652 | __be32 *bp; | |
653 | ||
654 | _enter(""); | |
655 | ||
656 | namesz = strlen(name); | |
657 | padsz = (4 - (namesz & 3)) & 3; | |
658 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
659 | ||
660 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
661 | (3 + 21 + 21 + 3 + 6) * 4); | |
662 | if (!call) | |
663 | return -ENOMEM; | |
664 | ||
665 | call->key = key; | |
666 | call->reply = vnode; | |
667 | call->reply2 = newfid; | |
668 | call->reply3 = newstatus; | |
669 | call->reply4 = newcb; | |
670 | call->service_id = FS_SERVICE; | |
671 | call->port = htons(AFS_FS_PORT); | |
672 | ||
673 | /* marshall the parameters */ | |
674 | bp = call->request; | |
675 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
676 | *bp++ = htonl(vnode->fid.vid); | |
677 | *bp++ = htonl(vnode->fid.vnode); | |
678 | *bp++ = htonl(vnode->fid.unique); | |
679 | *bp++ = htonl(namesz); | |
680 | memcpy(bp, name, namesz); | |
681 | bp = (void *) bp + namesz; | |
682 | if (padsz > 0) { | |
683 | memset(bp, 0, padsz); | |
684 | bp = (void *) bp + padsz; | |
685 | } | |
686 | *bp++ = htonl(AFS_SET_MODE); | |
687 | *bp++ = 0; /* mtime */ | |
688 | *bp++ = 0; /* owner */ | |
689 | *bp++ = 0; /* group */ | |
690 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
691 | *bp++ = 0; /* segment size */ | |
692 | ||
693 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
694 | } | |
695 | ||
696 | /* | |
697 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
698 | */ | |
699 | static int afs_deliver_fs_remove(struct afs_call *call, | |
700 | struct sk_buff *skb, bool last) | |
701 | { | |
702 | struct afs_vnode *vnode = call->reply; | |
703 | const __be32 *bp; | |
372ee163 | 704 | int ret; |
260a9803 DH |
705 | |
706 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
707 | ||
372ee163 DH |
708 | ret = afs_transfer_reply(call, skb, last); |
709 | if (ret < 0) | |
710 | return ret; | |
260a9803 DH |
711 | |
712 | /* unmarshall the reply once we've received all of it */ | |
713 | bp = call->buffer; | |
31143d5d | 714 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
715 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
716 | ||
717 | _leave(" = 0 [done]"); | |
718 | return 0; | |
719 | } | |
720 | ||
721 | /* | |
722 | * FS.RemoveDir/FS.RemoveFile operation type | |
723 | */ | |
724 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
725 | .name = "FS.RemoveXXXX", | |
726 | .deliver = afs_deliver_fs_remove, | |
727 | .abort_to_error = afs_abort_to_error, | |
728 | .destructor = afs_flat_call_destructor, | |
729 | }; | |
730 | ||
731 | /* | |
732 | * remove a file or directory | |
733 | */ | |
734 | int afs_fs_remove(struct afs_server *server, | |
735 | struct key *key, | |
736 | struct afs_vnode *vnode, | |
737 | const char *name, | |
738 | bool isdir, | |
739 | const struct afs_wait_mode *wait_mode) | |
740 | { | |
741 | struct afs_call *call; | |
742 | size_t namesz, reqsz, padsz; | |
743 | __be32 *bp; | |
744 | ||
745 | _enter(""); | |
746 | ||
747 | namesz = strlen(name); | |
748 | padsz = (4 - (namesz & 3)) & 3; | |
749 | reqsz = (5 * 4) + namesz + padsz; | |
750 | ||
751 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
752 | if (!call) | |
753 | return -ENOMEM; | |
754 | ||
755 | call->key = key; | |
756 | call->reply = vnode; | |
757 | call->service_id = FS_SERVICE; | |
758 | call->port = htons(AFS_FS_PORT); | |
759 | ||
760 | /* marshall the parameters */ | |
761 | bp = call->request; | |
762 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
763 | *bp++ = htonl(vnode->fid.vid); | |
764 | *bp++ = htonl(vnode->fid.vnode); | |
765 | *bp++ = htonl(vnode->fid.unique); | |
766 | *bp++ = htonl(namesz); | |
767 | memcpy(bp, name, namesz); | |
768 | bp = (void *) bp + namesz; | |
769 | if (padsz > 0) { | |
770 | memset(bp, 0, padsz); | |
771 | bp = (void *) bp + padsz; | |
772 | } | |
773 | ||
774 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
775 | } | |
776 | ||
777 | /* | |
778 | * deliver reply data to an FS.Link | |
779 | */ | |
780 | static int afs_deliver_fs_link(struct afs_call *call, | |
781 | struct sk_buff *skb, bool last) | |
782 | { | |
783 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
784 | const __be32 *bp; | |
372ee163 | 785 | int ret; |
260a9803 DH |
786 | |
787 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
788 | ||
372ee163 DH |
789 | ret = afs_transfer_reply(call, skb, last); |
790 | if (ret < 0) | |
791 | return ret; | |
260a9803 DH |
792 | |
793 | /* unmarshall the reply once we've received all of it */ | |
794 | bp = call->buffer; | |
31143d5d DH |
795 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
796 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
797 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
798 | ||
799 | _leave(" = 0 [done]"); | |
800 | return 0; | |
801 | } | |
802 | ||
803 | /* | |
804 | * FS.Link operation type | |
805 | */ | |
806 | static const struct afs_call_type afs_RXFSLink = { | |
807 | .name = "FS.Link", | |
808 | .deliver = afs_deliver_fs_link, | |
809 | .abort_to_error = afs_abort_to_error, | |
810 | .destructor = afs_flat_call_destructor, | |
811 | }; | |
812 | ||
813 | /* | |
814 | * make a hard link | |
815 | */ | |
816 | int afs_fs_link(struct afs_server *server, | |
817 | struct key *key, | |
818 | struct afs_vnode *dvnode, | |
819 | struct afs_vnode *vnode, | |
820 | const char *name, | |
821 | const struct afs_wait_mode *wait_mode) | |
822 | { | |
823 | struct afs_call *call; | |
824 | size_t namesz, reqsz, padsz; | |
825 | __be32 *bp; | |
826 | ||
827 | _enter(""); | |
828 | ||
829 | namesz = strlen(name); | |
830 | padsz = (4 - (namesz & 3)) & 3; | |
831 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
832 | ||
833 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
834 | if (!call) | |
835 | return -ENOMEM; | |
836 | ||
837 | call->key = key; | |
838 | call->reply = dvnode; | |
839 | call->reply2 = vnode; | |
840 | call->service_id = FS_SERVICE; | |
841 | call->port = htons(AFS_FS_PORT); | |
842 | ||
843 | /* marshall the parameters */ | |
844 | bp = call->request; | |
845 | *bp++ = htonl(FSLINK); | |
846 | *bp++ = htonl(dvnode->fid.vid); | |
847 | *bp++ = htonl(dvnode->fid.vnode); | |
848 | *bp++ = htonl(dvnode->fid.unique); | |
849 | *bp++ = htonl(namesz); | |
850 | memcpy(bp, name, namesz); | |
851 | bp = (void *) bp + namesz; | |
852 | if (padsz > 0) { | |
853 | memset(bp, 0, padsz); | |
854 | bp = (void *) bp + padsz; | |
855 | } | |
856 | *bp++ = htonl(vnode->fid.vid); | |
857 | *bp++ = htonl(vnode->fid.vnode); | |
858 | *bp++ = htonl(vnode->fid.unique); | |
859 | ||
860 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
861 | } | |
862 | ||
863 | /* | |
864 | * deliver reply data to an FS.Symlink | |
865 | */ | |
866 | static int afs_deliver_fs_symlink(struct afs_call *call, | |
867 | struct sk_buff *skb, bool last) | |
868 | { | |
869 | struct afs_vnode *vnode = call->reply; | |
870 | const __be32 *bp; | |
372ee163 | 871 | int ret; |
260a9803 DH |
872 | |
873 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
874 | ||
372ee163 DH |
875 | ret = afs_transfer_reply(call, skb, last); |
876 | if (ret < 0) | |
877 | return ret; | |
260a9803 DH |
878 | |
879 | /* unmarshall the reply once we've received all of it */ | |
880 | bp = call->buffer; | |
881 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
882 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
883 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
884 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
885 | ||
886 | _leave(" = 0 [done]"); | |
887 | return 0; | |
888 | } | |
889 | ||
890 | /* | |
891 | * FS.Symlink operation type | |
892 | */ | |
893 | static const struct afs_call_type afs_RXFSSymlink = { | |
894 | .name = "FS.Symlink", | |
895 | .deliver = afs_deliver_fs_symlink, | |
896 | .abort_to_error = afs_abort_to_error, | |
897 | .destructor = afs_flat_call_destructor, | |
898 | }; | |
899 | ||
900 | /* | |
901 | * create a symbolic link | |
902 | */ | |
903 | int afs_fs_symlink(struct afs_server *server, | |
904 | struct key *key, | |
905 | struct afs_vnode *vnode, | |
906 | const char *name, | |
907 | const char *contents, | |
908 | struct afs_fid *newfid, | |
909 | struct afs_file_status *newstatus, | |
910 | const struct afs_wait_mode *wait_mode) | |
911 | { | |
912 | struct afs_call *call; | |
913 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
914 | __be32 *bp; | |
915 | ||
916 | _enter(""); | |
917 | ||
918 | namesz = strlen(name); | |
919 | padsz = (4 - (namesz & 3)) & 3; | |
920 | ||
921 | c_namesz = strlen(contents); | |
922 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
923 | ||
924 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
925 | ||
926 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
927 | (3 + 21 + 21 + 6) * 4); | |
928 | if (!call) | |
929 | return -ENOMEM; | |
930 | ||
931 | call->key = key; | |
932 | call->reply = vnode; | |
933 | call->reply2 = newfid; | |
934 | call->reply3 = newstatus; | |
935 | call->service_id = FS_SERVICE; | |
936 | call->port = htons(AFS_FS_PORT); | |
937 | ||
938 | /* marshall the parameters */ | |
939 | bp = call->request; | |
940 | *bp++ = htonl(FSSYMLINK); | |
941 | *bp++ = htonl(vnode->fid.vid); | |
942 | *bp++ = htonl(vnode->fid.vnode); | |
943 | *bp++ = htonl(vnode->fid.unique); | |
944 | *bp++ = htonl(namesz); | |
945 | memcpy(bp, name, namesz); | |
946 | bp = (void *) bp + namesz; | |
947 | if (padsz > 0) { | |
948 | memset(bp, 0, padsz); | |
949 | bp = (void *) bp + padsz; | |
950 | } | |
951 | *bp++ = htonl(c_namesz); | |
952 | memcpy(bp, contents, c_namesz); | |
953 | bp = (void *) bp + c_namesz; | |
954 | if (c_padsz > 0) { | |
955 | memset(bp, 0, c_padsz); | |
956 | bp = (void *) bp + c_padsz; | |
957 | } | |
958 | *bp++ = htonl(AFS_SET_MODE); | |
959 | *bp++ = 0; /* mtime */ | |
960 | *bp++ = 0; /* owner */ | |
961 | *bp++ = 0; /* group */ | |
962 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
963 | *bp++ = 0; /* segment size */ | |
964 | ||
965 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
966 | } | |
967 | ||
968 | /* | |
969 | * deliver reply data to an FS.Rename | |
970 | */ | |
971 | static int afs_deliver_fs_rename(struct afs_call *call, | |
972 | struct sk_buff *skb, bool last) | |
973 | { | |
974 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
975 | const __be32 *bp; | |
372ee163 | 976 | int ret; |
260a9803 DH |
977 | |
978 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
979 | ||
372ee163 DH |
980 | ret = afs_transfer_reply(call, skb, last); |
981 | if (ret < 0) | |
982 | return ret; | |
260a9803 DH |
983 | |
984 | /* unmarshall the reply once we've received all of it */ | |
985 | bp = call->buffer; | |
31143d5d | 986 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 987 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
988 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
989 | NULL); | |
260a9803 DH |
990 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
991 | ||
992 | _leave(" = 0 [done]"); | |
993 | return 0; | |
994 | } | |
995 | ||
996 | /* | |
997 | * FS.Rename operation type | |
998 | */ | |
999 | static const struct afs_call_type afs_RXFSRename = { | |
1000 | .name = "FS.Rename", | |
1001 | .deliver = afs_deliver_fs_rename, | |
1002 | .abort_to_error = afs_abort_to_error, | |
1003 | .destructor = afs_flat_call_destructor, | |
1004 | }; | |
1005 | ||
1006 | /* | |
1007 | * create a symbolic link | |
1008 | */ | |
1009 | int afs_fs_rename(struct afs_server *server, | |
1010 | struct key *key, | |
1011 | struct afs_vnode *orig_dvnode, | |
1012 | const char *orig_name, | |
1013 | struct afs_vnode *new_dvnode, | |
1014 | const char *new_name, | |
1015 | const struct afs_wait_mode *wait_mode) | |
1016 | { | |
1017 | struct afs_call *call; | |
1018 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1019 | __be32 *bp; | |
1020 | ||
1021 | _enter(""); | |
1022 | ||
1023 | o_namesz = strlen(orig_name); | |
1024 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1025 | ||
1026 | n_namesz = strlen(new_name); | |
1027 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1028 | ||
1029 | reqsz = (4 * 4) + | |
1030 | 4 + o_namesz + o_padsz + | |
1031 | (3 * 4) + | |
1032 | 4 + n_namesz + n_padsz; | |
1033 | ||
1034 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1035 | if (!call) | |
1036 | return -ENOMEM; | |
1037 | ||
1038 | call->key = key; | |
1039 | call->reply = orig_dvnode; | |
1040 | call->reply2 = new_dvnode; | |
1041 | call->service_id = FS_SERVICE; | |
1042 | call->port = htons(AFS_FS_PORT); | |
1043 | ||
1044 | /* marshall the parameters */ | |
1045 | bp = call->request; | |
1046 | *bp++ = htonl(FSRENAME); | |
1047 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1048 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1049 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1050 | *bp++ = htonl(o_namesz); | |
1051 | memcpy(bp, orig_name, o_namesz); | |
1052 | bp = (void *) bp + o_namesz; | |
1053 | if (o_padsz > 0) { | |
1054 | memset(bp, 0, o_padsz); | |
1055 | bp = (void *) bp + o_padsz; | |
1056 | } | |
1057 | ||
1058 | *bp++ = htonl(new_dvnode->fid.vid); | |
1059 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1060 | *bp++ = htonl(new_dvnode->fid.unique); | |
1061 | *bp++ = htonl(n_namesz); | |
1062 | memcpy(bp, new_name, n_namesz); | |
1063 | bp = (void *) bp + n_namesz; | |
1064 | if (n_padsz > 0) { | |
1065 | memset(bp, 0, n_padsz); | |
1066 | bp = (void *) bp + n_padsz; | |
1067 | } | |
1068 | ||
1069 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1070 | } | |
31143d5d DH |
1071 | |
1072 | /* | |
1073 | * deliver reply data to an FS.StoreData | |
1074 | */ | |
1075 | static int afs_deliver_fs_store_data(struct afs_call *call, | |
1076 | struct sk_buff *skb, bool last) | |
1077 | { | |
1078 | struct afs_vnode *vnode = call->reply; | |
1079 | const __be32 *bp; | |
372ee163 | 1080 | int ret; |
31143d5d DH |
1081 | |
1082 | _enter(",,%u", last); | |
1083 | ||
372ee163 DH |
1084 | ret = afs_transfer_reply(call, skb, last); |
1085 | if (ret < 0) | |
1086 | return ret; | |
31143d5d DH |
1087 | |
1088 | /* unmarshall the reply once we've received all of it */ | |
1089 | bp = call->buffer; | |
1090 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1091 | &call->store_version); | |
1092 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1093 | ||
1094 | afs_pages_written_back(vnode, call); | |
1095 | ||
1096 | _leave(" = 0 [done]"); | |
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * FS.StoreData operation type | |
1102 | */ | |
1103 | static const struct afs_call_type afs_RXFSStoreData = { | |
1104 | .name = "FS.StoreData", | |
1105 | .deliver = afs_deliver_fs_store_data, | |
1106 | .abort_to_error = afs_abort_to_error, | |
1107 | .destructor = afs_flat_call_destructor, | |
1108 | }; | |
1109 | ||
b9b1f8d5 DH |
1110 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1111 | .name = "FS.StoreData64", | |
1112 | .deliver = afs_deliver_fs_store_data, | |
1113 | .abort_to_error = afs_abort_to_error, | |
1114 | .destructor = afs_flat_call_destructor, | |
1115 | }; | |
1116 | ||
1117 | /* | |
1118 | * store a set of pages to a very large file | |
1119 | */ | |
1120 | static int afs_fs_store_data64(struct afs_server *server, | |
1121 | struct afs_writeback *wb, | |
1122 | pgoff_t first, pgoff_t last, | |
1123 | unsigned offset, unsigned to, | |
1124 | loff_t size, loff_t pos, loff_t i_size, | |
1125 | const struct afs_wait_mode *wait_mode) | |
1126 | { | |
1127 | struct afs_vnode *vnode = wb->vnode; | |
1128 | struct afs_call *call; | |
1129 | __be32 *bp; | |
1130 | ||
1131 | _enter(",%x,{%x:%u},,", | |
1132 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1133 | ||
1134 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1135 | (4 + 6 + 3 * 2) * 4, | |
1136 | (21 + 6) * 4); | |
1137 | if (!call) | |
1138 | return -ENOMEM; | |
1139 | ||
1140 | call->wb = wb; | |
1141 | call->key = wb->key; | |
1142 | call->reply = vnode; | |
1143 | call->service_id = FS_SERVICE; | |
1144 | call->port = htons(AFS_FS_PORT); | |
1145 | call->mapping = vnode->vfs_inode.i_mapping; | |
1146 | call->first = first; | |
1147 | call->last = last; | |
1148 | call->first_offset = offset; | |
1149 | call->last_to = to; | |
1150 | call->send_pages = true; | |
1151 | call->store_version = vnode->status.data_version + 1; | |
1152 | ||
1153 | /* marshall the parameters */ | |
1154 | bp = call->request; | |
1155 | *bp++ = htonl(FSSTOREDATA64); | |
1156 | *bp++ = htonl(vnode->fid.vid); | |
1157 | *bp++ = htonl(vnode->fid.vnode); | |
1158 | *bp++ = htonl(vnode->fid.unique); | |
1159 | ||
1160 | *bp++ = 0; /* mask */ | |
1161 | *bp++ = 0; /* mtime */ | |
1162 | *bp++ = 0; /* owner */ | |
1163 | *bp++ = 0; /* group */ | |
1164 | *bp++ = 0; /* unix mode */ | |
1165 | *bp++ = 0; /* segment size */ | |
1166 | ||
1167 | *bp++ = htonl(pos >> 32); | |
1168 | *bp++ = htonl((u32) pos); | |
1169 | *bp++ = htonl(size >> 32); | |
1170 | *bp++ = htonl((u32) size); | |
1171 | *bp++ = htonl(i_size >> 32); | |
1172 | *bp++ = htonl((u32) i_size); | |
1173 | ||
1174 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1175 | } | |
1176 | ||
31143d5d DH |
1177 | /* |
1178 | * store a set of pages | |
1179 | */ | |
1180 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1181 | pgoff_t first, pgoff_t last, | |
1182 | unsigned offset, unsigned to, | |
1183 | const struct afs_wait_mode *wait_mode) | |
1184 | { | |
1185 | struct afs_vnode *vnode = wb->vnode; | |
1186 | struct afs_call *call; | |
1187 | loff_t size, pos, i_size; | |
1188 | __be32 *bp; | |
1189 | ||
1190 | _enter(",%x,{%x:%u},,", | |
1191 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1192 | ||
1193 | size = to - offset; | |
1194 | if (first != last) | |
1195 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1196 | pos = (loff_t)first << PAGE_SHIFT; | |
1197 | pos += offset; | |
1198 | ||
1199 | i_size = i_size_read(&vnode->vfs_inode); | |
1200 | if (pos + size > i_size) | |
1201 | i_size = size + pos; | |
1202 | ||
1203 | _debug("size %llx, at %llx, i_size %llx", | |
1204 | (unsigned long long) size, (unsigned long long) pos, | |
1205 | (unsigned long long) i_size); | |
1206 | ||
b9b1f8d5 DH |
1207 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1208 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
1209 | size, pos, i_size, wait_mode); | |
31143d5d DH |
1210 | |
1211 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1212 | (4 + 6 + 3) * 4, | |
1213 | (21 + 6) * 4); | |
1214 | if (!call) | |
1215 | return -ENOMEM; | |
1216 | ||
1217 | call->wb = wb; | |
1218 | call->key = wb->key; | |
1219 | call->reply = vnode; | |
1220 | call->service_id = FS_SERVICE; | |
1221 | call->port = htons(AFS_FS_PORT); | |
1222 | call->mapping = vnode->vfs_inode.i_mapping; | |
1223 | call->first = first; | |
1224 | call->last = last; | |
1225 | call->first_offset = offset; | |
1226 | call->last_to = to; | |
1227 | call->send_pages = true; | |
1228 | call->store_version = vnode->status.data_version + 1; | |
1229 | ||
1230 | /* marshall the parameters */ | |
1231 | bp = call->request; | |
1232 | *bp++ = htonl(FSSTOREDATA); | |
1233 | *bp++ = htonl(vnode->fid.vid); | |
1234 | *bp++ = htonl(vnode->fid.vnode); | |
1235 | *bp++ = htonl(vnode->fid.unique); | |
1236 | ||
1237 | *bp++ = 0; /* mask */ | |
1238 | *bp++ = 0; /* mtime */ | |
1239 | *bp++ = 0; /* owner */ | |
1240 | *bp++ = 0; /* group */ | |
1241 | *bp++ = 0; /* unix mode */ | |
1242 | *bp++ = 0; /* segment size */ | |
1243 | ||
1244 | *bp++ = htonl(pos); | |
1245 | *bp++ = htonl(size); | |
1246 | *bp++ = htonl(i_size); | |
1247 | ||
1248 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * deliver reply data to an FS.StoreStatus | |
1253 | */ | |
1254 | static int afs_deliver_fs_store_status(struct afs_call *call, | |
1255 | struct sk_buff *skb, bool last) | |
1256 | { | |
1257 | afs_dataversion_t *store_version; | |
1258 | struct afs_vnode *vnode = call->reply; | |
1259 | const __be32 *bp; | |
372ee163 | 1260 | int ret; |
31143d5d DH |
1261 | |
1262 | _enter(",,%u", last); | |
1263 | ||
372ee163 DH |
1264 | ret = afs_transfer_reply(call, skb, last); |
1265 | if (ret < 0) | |
1266 | return ret; | |
31143d5d DH |
1267 | |
1268 | /* unmarshall the reply once we've received all of it */ | |
1269 | store_version = NULL; | |
1270 | if (call->operation_ID == FSSTOREDATA) | |
1271 | store_version = &call->store_version; | |
1272 | ||
1273 | bp = call->buffer; | |
1274 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1275 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1276 | ||
1277 | _leave(" = 0 [done]"); | |
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | /* | |
1282 | * FS.StoreStatus operation type | |
1283 | */ | |
1284 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1285 | .name = "FS.StoreStatus", | |
1286 | .deliver = afs_deliver_fs_store_status, | |
1287 | .abort_to_error = afs_abort_to_error, | |
1288 | .destructor = afs_flat_call_destructor, | |
1289 | }; | |
1290 | ||
1291 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1292 | .name = "FS.StoreData", | |
1293 | .deliver = afs_deliver_fs_store_status, | |
1294 | .abort_to_error = afs_abort_to_error, | |
1295 | .destructor = afs_flat_call_destructor, | |
1296 | }; | |
1297 | ||
b9b1f8d5 DH |
1298 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1299 | .name = "FS.StoreData64", | |
1300 | .deliver = afs_deliver_fs_store_status, | |
1301 | .abort_to_error = afs_abort_to_error, | |
1302 | .destructor = afs_flat_call_destructor, | |
1303 | }; | |
1304 | ||
1305 | /* | |
1306 | * set the attributes on a very large file, using FS.StoreData rather than | |
1307 | * FS.StoreStatus so as to alter the file size also | |
1308 | */ | |
1309 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1310 | struct afs_vnode *vnode, struct iattr *attr, | |
1311 | const struct afs_wait_mode *wait_mode) | |
1312 | { | |
1313 | struct afs_call *call; | |
1314 | __be32 *bp; | |
1315 | ||
1316 | _enter(",%x,{%x:%u},,", | |
1317 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1318 | ||
1319 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1320 | ||
1321 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1322 | (4 + 6 + 3 * 2) * 4, | |
1323 | (21 + 6) * 4); | |
1324 | if (!call) | |
1325 | return -ENOMEM; | |
1326 | ||
1327 | call->key = key; | |
1328 | call->reply = vnode; | |
1329 | call->service_id = FS_SERVICE; | |
1330 | call->port = htons(AFS_FS_PORT); | |
1331 | call->store_version = vnode->status.data_version + 1; | |
1332 | call->operation_ID = FSSTOREDATA; | |
1333 | ||
1334 | /* marshall the parameters */ | |
1335 | bp = call->request; | |
1336 | *bp++ = htonl(FSSTOREDATA64); | |
1337 | *bp++ = htonl(vnode->fid.vid); | |
1338 | *bp++ = htonl(vnode->fid.vnode); | |
1339 | *bp++ = htonl(vnode->fid.unique); | |
1340 | ||
1341 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1342 | ||
1343 | *bp++ = 0; /* position of start of write */ | |
1344 | *bp++ = 0; | |
1345 | *bp++ = 0; /* size of write */ | |
1346 | *bp++ = 0; | |
1347 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1348 | *bp++ = htonl((u32) attr->ia_size); | |
1349 | ||
1350 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1351 | } | |
1352 | ||
31143d5d DH |
1353 | /* |
1354 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1355 | * so as to alter the file size also | |
1356 | */ | |
1357 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1358 | struct afs_vnode *vnode, struct iattr *attr, | |
1359 | const struct afs_wait_mode *wait_mode) | |
1360 | { | |
1361 | struct afs_call *call; | |
1362 | __be32 *bp; | |
1363 | ||
1364 | _enter(",%x,{%x:%u},,", | |
1365 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1366 | ||
1367 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1368 | if (attr->ia_size >> 32) |
1369 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
1370 | wait_mode); | |
31143d5d DH |
1371 | |
1372 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1373 | (4 + 6 + 3) * 4, | |
1374 | (21 + 6) * 4); | |
1375 | if (!call) | |
1376 | return -ENOMEM; | |
1377 | ||
1378 | call->key = key; | |
1379 | call->reply = vnode; | |
1380 | call->service_id = FS_SERVICE; | |
1381 | call->port = htons(AFS_FS_PORT); | |
1382 | call->store_version = vnode->status.data_version + 1; | |
1383 | call->operation_ID = FSSTOREDATA; | |
1384 | ||
1385 | /* marshall the parameters */ | |
1386 | bp = call->request; | |
1387 | *bp++ = htonl(FSSTOREDATA); | |
1388 | *bp++ = htonl(vnode->fid.vid); | |
1389 | *bp++ = htonl(vnode->fid.vnode); | |
1390 | *bp++ = htonl(vnode->fid.unique); | |
1391 | ||
1392 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1393 | ||
1394 | *bp++ = 0; /* position of start of write */ | |
1395 | *bp++ = 0; /* size of write */ | |
1396 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1397 | ||
1398 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1399 | } | |
1400 | ||
1401 | /* | |
1402 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1403 | * size, and FS.StoreStatus otherwise | |
1404 | */ | |
1405 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1406 | struct afs_vnode *vnode, struct iattr *attr, | |
1407 | const struct afs_wait_mode *wait_mode) | |
1408 | { | |
1409 | struct afs_call *call; | |
1410 | __be32 *bp; | |
1411 | ||
1412 | if (attr->ia_valid & ATTR_SIZE) | |
1413 | return afs_fs_setattr_size(server, key, vnode, attr, | |
1414 | wait_mode); | |
1415 | ||
1416 | _enter(",%x,{%x:%u},,", | |
1417 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1418 | ||
1419 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1420 | (4 + 6) * 4, | |
1421 | (21 + 6) * 4); | |
1422 | if (!call) | |
1423 | return -ENOMEM; | |
1424 | ||
1425 | call->key = key; | |
1426 | call->reply = vnode; | |
1427 | call->service_id = FS_SERVICE; | |
1428 | call->port = htons(AFS_FS_PORT); | |
1429 | call->operation_ID = FSSTORESTATUS; | |
1430 | ||
1431 | /* marshall the parameters */ | |
1432 | bp = call->request; | |
1433 | *bp++ = htonl(FSSTORESTATUS); | |
1434 | *bp++ = htonl(vnode->fid.vid); | |
1435 | *bp++ = htonl(vnode->fid.vnode); | |
1436 | *bp++ = htonl(vnode->fid.unique); | |
1437 | ||
1438 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1439 | ||
1440 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1441 | } | |
45222b9e DH |
1442 | |
1443 | /* | |
1444 | * deliver reply data to an FS.GetVolumeStatus | |
1445 | */ | |
1446 | static int afs_deliver_fs_get_volume_status(struct afs_call *call, | |
1447 | struct sk_buff *skb, bool last) | |
1448 | { | |
1449 | const __be32 *bp; | |
1450 | char *p; | |
1451 | int ret; | |
1452 | ||
1453 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
1454 | ||
1455 | switch (call->unmarshall) { | |
1456 | case 0: | |
1457 | call->offset = 0; | |
1458 | call->unmarshall++; | |
1459 | ||
1460 | /* extract the returned status record */ | |
1461 | case 1: | |
1462 | _debug("extract status"); | |
1463 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1464 | 12 * 4); | |
372ee163 DH |
1465 | if (ret < 0) |
1466 | return ret; | |
45222b9e DH |
1467 | |
1468 | bp = call->buffer; | |
1469 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); | |
1470 | call->offset = 0; | |
1471 | call->unmarshall++; | |
1472 | ||
1473 | /* extract the volume name length */ | |
1474 | case 2: | |
1475 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
372ee163 DH |
1476 | if (ret < 0) |
1477 | return ret; | |
45222b9e DH |
1478 | |
1479 | call->count = ntohl(call->tmp); | |
1480 | _debug("volname length: %u", call->count); | |
1481 | if (call->count >= AFSNAMEMAX) | |
1482 | return -EBADMSG; | |
1483 | call->offset = 0; | |
1484 | call->unmarshall++; | |
1485 | ||
1486 | /* extract the volume name */ | |
1487 | case 3: | |
1488 | _debug("extract volname"); | |
1489 | if (call->count > 0) { | |
1490 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1491 | call->count); | |
372ee163 DH |
1492 | if (ret < 0) |
1493 | return ret; | |
45222b9e DH |
1494 | } |
1495 | ||
1496 | p = call->reply3; | |
1497 | p[call->count] = 0; | |
1498 | _debug("volname '%s'", p); | |
1499 | ||
1500 | call->offset = 0; | |
1501 | call->unmarshall++; | |
1502 | ||
1503 | /* extract the volume name padding */ | |
1504 | if ((call->count & 3) == 0) { | |
1505 | call->unmarshall++; | |
1506 | goto no_volname_padding; | |
1507 | } | |
1508 | call->count = 4 - (call->count & 3); | |
1509 | ||
1510 | case 4: | |
1511 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1512 | call->count); | |
372ee163 DH |
1513 | if (ret < 0) |
1514 | return ret; | |
45222b9e DH |
1515 | |
1516 | call->offset = 0; | |
1517 | call->unmarshall++; | |
1518 | no_volname_padding: | |
1519 | ||
1520 | /* extract the offline message length */ | |
1521 | case 5: | |
1522 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
372ee163 DH |
1523 | if (ret < 0) |
1524 | return ret; | |
45222b9e DH |
1525 | |
1526 | call->count = ntohl(call->tmp); | |
1527 | _debug("offline msg length: %u", call->count); | |
1528 | if (call->count >= AFSNAMEMAX) | |
1529 | return -EBADMSG; | |
1530 | call->offset = 0; | |
1531 | call->unmarshall++; | |
1532 | ||
1533 | /* extract the offline message */ | |
1534 | case 6: | |
1535 | _debug("extract offline"); | |
1536 | if (call->count > 0) { | |
1537 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1538 | call->count); | |
372ee163 DH |
1539 | if (ret < 0) |
1540 | return ret; | |
45222b9e DH |
1541 | } |
1542 | ||
1543 | p = call->reply3; | |
1544 | p[call->count] = 0; | |
1545 | _debug("offline '%s'", p); | |
1546 | ||
1547 | call->offset = 0; | |
1548 | call->unmarshall++; | |
1549 | ||
1550 | /* extract the offline message padding */ | |
1551 | if ((call->count & 3) == 0) { | |
1552 | call->unmarshall++; | |
1553 | goto no_offline_padding; | |
1554 | } | |
1555 | call->count = 4 - (call->count & 3); | |
1556 | ||
1557 | case 7: | |
1558 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1559 | call->count); | |
372ee163 DH |
1560 | if (ret < 0) |
1561 | return ret; | |
45222b9e DH |
1562 | |
1563 | call->offset = 0; | |
1564 | call->unmarshall++; | |
1565 | no_offline_padding: | |
1566 | ||
1567 | /* extract the message of the day length */ | |
1568 | case 8: | |
1569 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
372ee163 DH |
1570 | if (ret < 0) |
1571 | return ret; | |
45222b9e DH |
1572 | |
1573 | call->count = ntohl(call->tmp); | |
1574 | _debug("motd length: %u", call->count); | |
1575 | if (call->count >= AFSNAMEMAX) | |
1576 | return -EBADMSG; | |
1577 | call->offset = 0; | |
1578 | call->unmarshall++; | |
1579 | ||
1580 | /* extract the message of the day */ | |
1581 | case 9: | |
1582 | _debug("extract motd"); | |
1583 | if (call->count > 0) { | |
1584 | ret = afs_extract_data(call, skb, last, call->reply3, | |
1585 | call->count); | |
372ee163 DH |
1586 | if (ret < 0) |
1587 | return ret; | |
45222b9e DH |
1588 | } |
1589 | ||
1590 | p = call->reply3; | |
1591 | p[call->count] = 0; | |
1592 | _debug("motd '%s'", p); | |
1593 | ||
1594 | call->offset = 0; | |
1595 | call->unmarshall++; | |
1596 | ||
1597 | /* extract the message of the day padding */ | |
1598 | if ((call->count & 3) == 0) { | |
1599 | call->unmarshall++; | |
1600 | goto no_motd_padding; | |
1601 | } | |
1602 | call->count = 4 - (call->count & 3); | |
1603 | ||
1604 | case 10: | |
1605 | ret = afs_extract_data(call, skb, last, call->buffer, | |
1606 | call->count); | |
372ee163 DH |
1607 | if (ret < 0) |
1608 | return ret; | |
45222b9e DH |
1609 | |
1610 | call->offset = 0; | |
1611 | call->unmarshall++; | |
1612 | no_motd_padding: | |
1613 | ||
1614 | case 11: | |
372ee163 DH |
1615 | ret = afs_data_complete(call, skb, last); |
1616 | if (ret < 0) | |
1617 | return ret; | |
45222b9e DH |
1618 | break; |
1619 | } | |
1620 | ||
45222b9e DH |
1621 | _leave(" = 0 [done]"); |
1622 | return 0; | |
1623 | } | |
1624 | ||
1625 | /* | |
1626 | * destroy an FS.GetVolumeStatus call | |
1627 | */ | |
1628 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1629 | { | |
1630 | kfree(call->reply3); | |
1631 | call->reply3 = NULL; | |
1632 | afs_flat_call_destructor(call); | |
1633 | } | |
1634 | ||
1635 | /* | |
1636 | * FS.GetVolumeStatus operation type | |
1637 | */ | |
1638 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1639 | .name = "FS.GetVolumeStatus", | |
1640 | .deliver = afs_deliver_fs_get_volume_status, | |
1641 | .abort_to_error = afs_abort_to_error, | |
1642 | .destructor = afs_get_volume_status_call_destructor, | |
1643 | }; | |
1644 | ||
1645 | /* | |
1646 | * fetch the status of a volume | |
1647 | */ | |
1648 | int afs_fs_get_volume_status(struct afs_server *server, | |
1649 | struct key *key, | |
1650 | struct afs_vnode *vnode, | |
1651 | struct afs_volume_status *vs, | |
1652 | const struct afs_wait_mode *wait_mode) | |
1653 | { | |
1654 | struct afs_call *call; | |
1655 | __be32 *bp; | |
1656 | void *tmpbuf; | |
1657 | ||
1658 | _enter(""); | |
1659 | ||
1660 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1661 | if (!tmpbuf) | |
1662 | return -ENOMEM; | |
1663 | ||
1664 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); | |
1665 | if (!call) { | |
1666 | kfree(tmpbuf); | |
1667 | return -ENOMEM; | |
1668 | } | |
1669 | ||
1670 | call->key = key; | |
1671 | call->reply = vnode; | |
1672 | call->reply2 = vs; | |
1673 | call->reply3 = tmpbuf; | |
1674 | call->service_id = FS_SERVICE; | |
1675 | call->port = htons(AFS_FS_PORT); | |
1676 | ||
1677 | /* marshall the parameters */ | |
1678 | bp = call->request; | |
1679 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1680 | bp[1] = htonl(vnode->fid.vid); | |
1681 | ||
1682 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1683 | } | |
e8d6c554 DH |
1684 | |
1685 | /* | |
1686 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1687 | */ | |
1688 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call, | |
1689 | struct sk_buff *skb, bool last) | |
1690 | { | |
1691 | const __be32 *bp; | |
372ee163 | 1692 | int ret; |
e8d6c554 DH |
1693 | |
1694 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
1695 | ||
372ee163 DH |
1696 | ret = afs_transfer_reply(call, skb, last); |
1697 | if (ret < 0) | |
1698 | return ret; | |
e8d6c554 DH |
1699 | |
1700 | /* unmarshall the reply once we've received all of it */ | |
1701 | bp = call->buffer; | |
1702 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1703 | ||
1704 | _leave(" = 0 [done]"); | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * FS.SetLock operation type | |
1710 | */ | |
1711 | static const struct afs_call_type afs_RXFSSetLock = { | |
1712 | .name = "FS.SetLock", | |
1713 | .deliver = afs_deliver_fs_xxxx_lock, | |
1714 | .abort_to_error = afs_abort_to_error, | |
1715 | .destructor = afs_flat_call_destructor, | |
1716 | }; | |
1717 | ||
1718 | /* | |
1719 | * FS.ExtendLock operation type | |
1720 | */ | |
1721 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1722 | .name = "FS.ExtendLock", | |
1723 | .deliver = afs_deliver_fs_xxxx_lock, | |
1724 | .abort_to_error = afs_abort_to_error, | |
1725 | .destructor = afs_flat_call_destructor, | |
1726 | }; | |
1727 | ||
1728 | /* | |
1729 | * FS.ReleaseLock operation type | |
1730 | */ | |
1731 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1732 | .name = "FS.ReleaseLock", | |
1733 | .deliver = afs_deliver_fs_xxxx_lock, | |
1734 | .abort_to_error = afs_abort_to_error, | |
1735 | .destructor = afs_flat_call_destructor, | |
1736 | }; | |
1737 | ||
1738 | /* | |
1739 | * get a lock on a file | |
1740 | */ | |
1741 | int afs_fs_set_lock(struct afs_server *server, | |
1742 | struct key *key, | |
1743 | struct afs_vnode *vnode, | |
1744 | afs_lock_type_t type, | |
1745 | const struct afs_wait_mode *wait_mode) | |
1746 | { | |
1747 | struct afs_call *call; | |
1748 | __be32 *bp; | |
1749 | ||
1750 | _enter(""); | |
1751 | ||
1752 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); | |
1753 | if (!call) | |
1754 | return -ENOMEM; | |
1755 | ||
1756 | call->key = key; | |
1757 | call->reply = vnode; | |
1758 | call->service_id = FS_SERVICE; | |
1759 | call->port = htons(AFS_FS_PORT); | |
1760 | ||
1761 | /* marshall the parameters */ | |
1762 | bp = call->request; | |
1763 | *bp++ = htonl(FSSETLOCK); | |
1764 | *bp++ = htonl(vnode->fid.vid); | |
1765 | *bp++ = htonl(vnode->fid.vnode); | |
1766 | *bp++ = htonl(vnode->fid.unique); | |
1767 | *bp++ = htonl(type); | |
1768 | ||
1769 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1770 | } | |
1771 | ||
1772 | /* | |
1773 | * extend a lock on a file | |
1774 | */ | |
1775 | int afs_fs_extend_lock(struct afs_server *server, | |
1776 | struct key *key, | |
1777 | struct afs_vnode *vnode, | |
1778 | const struct afs_wait_mode *wait_mode) | |
1779 | { | |
1780 | struct afs_call *call; | |
1781 | __be32 *bp; | |
1782 | ||
1783 | _enter(""); | |
1784 | ||
1785 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); | |
1786 | if (!call) | |
1787 | return -ENOMEM; | |
1788 | ||
1789 | call->key = key; | |
1790 | call->reply = vnode; | |
1791 | call->service_id = FS_SERVICE; | |
1792 | call->port = htons(AFS_FS_PORT); | |
1793 | ||
1794 | /* marshall the parameters */ | |
1795 | bp = call->request; | |
1796 | *bp++ = htonl(FSEXTENDLOCK); | |
1797 | *bp++ = htonl(vnode->fid.vid); | |
1798 | *bp++ = htonl(vnode->fid.vnode); | |
1799 | *bp++ = htonl(vnode->fid.unique); | |
1800 | ||
1801 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1802 | } | |
1803 | ||
1804 | /* | |
1805 | * release a lock on a file | |
1806 | */ | |
1807 | int afs_fs_release_lock(struct afs_server *server, | |
1808 | struct key *key, | |
1809 | struct afs_vnode *vnode, | |
1810 | const struct afs_wait_mode *wait_mode) | |
1811 | { | |
1812 | struct afs_call *call; | |
1813 | __be32 *bp; | |
1814 | ||
1815 | _enter(""); | |
1816 | ||
1817 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); | |
1818 | if (!call) | |
1819 | return -ENOMEM; | |
1820 | ||
1821 | call->key = key; | |
1822 | call->reply = vnode; | |
1823 | call->service_id = FS_SERVICE; | |
1824 | call->port = htons(AFS_FS_PORT); | |
1825 | ||
1826 | /* marshall the parameters */ | |
1827 | bp = call->request; | |
1828 | *bp++ = htonl(FSRELEASELOCK); | |
1829 | *bp++ = htonl(vnode->fid.vid); | |
1830 | *bp++ = htonl(vnode->fid.vnode); | |
1831 | *bp++ = htonl(vnode->fid.unique); | |
1832 | ||
1833 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1834 | } |