Commit | Line | Data |
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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 | */ | |
d001648e | 238 | static int afs_deliver_fs_fetch_status(struct afs_call *call) |
08e0e7c8 | 239 | { |
260a9803 | 240 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 241 | const __be32 *bp; |
372ee163 | 242 | int ret; |
1da177e4 | 243 | |
d001648e | 244 | _enter(""); |
1da177e4 | 245 | |
d001648e | 246 | ret = afs_transfer_reply(call); |
372ee163 DH |
247 | if (ret < 0) |
248 | return ret; | |
1da177e4 | 249 | |
08e0e7c8 DH |
250 | /* unmarshall the reply once we've received all of it */ |
251 | bp = call->buffer; | |
31143d5d | 252 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 253 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
254 | if (call->reply2) |
255 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 256 | |
08e0e7c8 DH |
257 | _leave(" = 0 [done]"); |
258 | return 0; | |
ec26815a | 259 | } |
08e0e7c8 DH |
260 | |
261 | /* | |
262 | * FS.FetchStatus operation type | |
263 | */ | |
264 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 265 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
266 | .deliver = afs_deliver_fs_fetch_status, |
267 | .abort_to_error = afs_abort_to_error, | |
268 | .destructor = afs_flat_call_destructor, | |
269 | }; | |
1da177e4 | 270 | |
1da177e4 LT |
271 | /* |
272 | * fetch the status information for a file | |
273 | */ | |
08e0e7c8 | 274 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 275 | struct key *key, |
08e0e7c8 DH |
276 | struct afs_vnode *vnode, |
277 | struct afs_volsync *volsync, | |
278 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 279 | { |
08e0e7c8 | 280 | struct afs_call *call; |
1da177e4 LT |
281 | __be32 *bp; |
282 | ||
416351f2 | 283 | _enter(",%x,{%x:%u},,", |
260a9803 | 284 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 285 | |
260a9803 | 286 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
287 | if (!call) |
288 | return -ENOMEM; | |
1da177e4 | 289 | |
00d3b7a4 | 290 | call->key = key; |
08e0e7c8 DH |
291 | call->reply = vnode; |
292 | call->reply2 = volsync; | |
293 | call->service_id = FS_SERVICE; | |
294 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
295 | |
296 | /* marshall the parameters */ | |
08e0e7c8 | 297 | bp = call->request; |
1da177e4 LT |
298 | bp[0] = htonl(FSFETCHSTATUS); |
299 | bp[1] = htonl(vnode->fid.vid); | |
300 | bp[2] = htonl(vnode->fid.vnode); | |
301 | bp[3] = htonl(vnode->fid.unique); | |
302 | ||
08e0e7c8 | 303 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 304 | } |
1da177e4 | 305 | |
1da177e4 | 306 | /* |
08e0e7c8 | 307 | * deliver reply data to an FS.FetchData |
1da177e4 | 308 | */ |
d001648e | 309 | static int afs_deliver_fs_fetch_data(struct afs_call *call) |
1da177e4 | 310 | { |
260a9803 | 311 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 DH |
312 | const __be32 *bp; |
313 | struct page *page; | |
314 | void *buffer; | |
1da177e4 | 315 | int ret; |
1da177e4 | 316 | |
d001648e | 317 | _enter("{%u}", call->unmarshall); |
08e0e7c8 DH |
318 | |
319 | switch (call->unmarshall) { | |
320 | case 0: | |
321 | call->offset = 0; | |
322 | call->unmarshall++; | |
b9b1f8d5 DH |
323 | if (call->operation_ID != FSFETCHDATA64) { |
324 | call->unmarshall++; | |
325 | goto no_msw; | |
326 | } | |
08e0e7c8 | 327 | |
b9b1f8d5 DH |
328 | /* extract the upper part of the returned data length of an |
329 | * FSFETCHDATA64 op (which should always be 0 using this | |
330 | * client) */ | |
08e0e7c8 | 331 | case 1: |
b9b1f8d5 | 332 | _debug("extract data length (MSW)"); |
d001648e | 333 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
334 | if (ret < 0) |
335 | return ret; | |
b9b1f8d5 DH |
336 | |
337 | call->count = ntohl(call->tmp); | |
338 | _debug("DATA length MSW: %u", call->count); | |
339 | if (call->count > 0) | |
340 | return -EBADMSG; | |
341 | call->offset = 0; | |
342 | call->unmarshall++; | |
343 | ||
344 | no_msw: | |
345 | /* extract the returned data length */ | |
346 | case 2: | |
08e0e7c8 | 347 | _debug("extract data length"); |
d001648e | 348 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
349 | if (ret < 0) |
350 | return ret; | |
1da177e4 | 351 | |
08e0e7c8 DH |
352 | call->count = ntohl(call->tmp); |
353 | _debug("DATA length: %u", call->count); | |
354 | if (call->count > PAGE_SIZE) | |
355 | return -EBADMSG; | |
356 | call->offset = 0; | |
357 | call->unmarshall++; | |
358 | ||
08e0e7c8 | 359 | /* extract the returned data */ |
b9b1f8d5 | 360 | case 3: |
08e0e7c8 | 361 | _debug("extract data"); |
416351f2 DH |
362 | if (call->count > 0) { |
363 | page = call->reply3; | |
d001648e DH |
364 | buffer = kmap(page); |
365 | ret = afs_extract_data(call, buffer, | |
366 | call->count, true); | |
367 | kunmap(buffer); | |
372ee163 DH |
368 | if (ret < 0) |
369 | return ret; | |
08e0e7c8 | 370 | } |
1da177e4 | 371 | |
08e0e7c8 DH |
372 | call->offset = 0; |
373 | call->unmarshall++; | |
1da177e4 | 374 | |
08e0e7c8 | 375 | /* extract the metadata */ |
b9b1f8d5 | 376 | case 4: |
d001648e DH |
377 | ret = afs_extract_data(call, call->buffer, |
378 | (21 + 3 + 6) * 4, false); | |
372ee163 DH |
379 | if (ret < 0) |
380 | return ret; | |
08e0e7c8 DH |
381 | |
382 | bp = call->buffer; | |
31143d5d | 383 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 384 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
385 | if (call->reply2) |
386 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
387 | ||
388 | call->offset = 0; | |
389 | call->unmarshall++; | |
1da177e4 | 390 | |
b9b1f8d5 | 391 | case 5: |
08e0e7c8 | 392 | break; |
1da177e4 LT |
393 | } |
394 | ||
416351f2 DH |
395 | if (call->count < PAGE_SIZE) { |
396 | _debug("clear"); | |
397 | page = call->reply3; | |
d001648e | 398 | buffer = kmap(page); |
416351f2 | 399 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); |
d001648e | 400 | kunmap(buffer); |
416351f2 DH |
401 | } |
402 | ||
08e0e7c8 DH |
403 | _leave(" = 0 [done]"); |
404 | return 0; | |
ec26815a | 405 | } |
1da177e4 | 406 | |
1da177e4 | 407 | /* |
08e0e7c8 | 408 | * FS.FetchData operation type |
1da177e4 | 409 | */ |
08e0e7c8 | 410 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 411 | .name = "FS.FetchData", |
08e0e7c8 DH |
412 | .deliver = afs_deliver_fs_fetch_data, |
413 | .abort_to_error = afs_abort_to_error, | |
414 | .destructor = afs_flat_call_destructor, | |
415 | }; | |
416 | ||
b9b1f8d5 DH |
417 | static const struct afs_call_type afs_RXFSFetchData64 = { |
418 | .name = "FS.FetchData64", | |
419 | .deliver = afs_deliver_fs_fetch_data, | |
420 | .abort_to_error = afs_abort_to_error, | |
421 | .destructor = afs_flat_call_destructor, | |
422 | }; | |
423 | ||
424 | /* | |
425 | * fetch data from a very large file | |
426 | */ | |
427 | static int afs_fs_fetch_data64(struct afs_server *server, | |
428 | struct key *key, | |
429 | struct afs_vnode *vnode, | |
430 | off_t offset, size_t length, | |
431 | struct page *buffer, | |
432 | const struct afs_wait_mode *wait_mode) | |
433 | { | |
434 | struct afs_call *call; | |
435 | __be32 *bp; | |
436 | ||
437 | _enter(""); | |
438 | ||
439 | ASSERTCMP(length, <, ULONG_MAX); | |
440 | ||
441 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); | |
442 | if (!call) | |
443 | return -ENOMEM; | |
444 | ||
445 | call->key = key; | |
446 | call->reply = vnode; | |
447 | call->reply2 = NULL; /* volsync */ | |
448 | call->reply3 = buffer; | |
449 | call->service_id = FS_SERVICE; | |
450 | call->port = htons(AFS_FS_PORT); | |
451 | call->operation_ID = FSFETCHDATA64; | |
452 | ||
453 | /* marshall the parameters */ | |
454 | bp = call->request; | |
455 | bp[0] = htonl(FSFETCHDATA64); | |
456 | bp[1] = htonl(vnode->fid.vid); | |
457 | bp[2] = htonl(vnode->fid.vnode); | |
458 | bp[3] = htonl(vnode->fid.unique); | |
459 | bp[4] = htonl(upper_32_bits(offset)); | |
460 | bp[5] = htonl((u32) offset); | |
461 | bp[6] = 0; | |
462 | bp[7] = htonl((u32) length); | |
463 | ||
464 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
465 | } | |
466 | ||
08e0e7c8 DH |
467 | /* |
468 | * fetch data from a file | |
469 | */ | |
470 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 471 | struct key *key, |
08e0e7c8 DH |
472 | struct afs_vnode *vnode, |
473 | off_t offset, size_t length, | |
474 | struct page *buffer, | |
08e0e7c8 | 475 | const struct afs_wait_mode *wait_mode) |
1da177e4 | 476 | { |
08e0e7c8 | 477 | struct afs_call *call; |
1da177e4 LT |
478 | __be32 *bp; |
479 | ||
b9b1f8d5 DH |
480 | if (upper_32_bits(offset) || upper_32_bits(offset + length)) |
481 | return afs_fs_fetch_data64(server, key, vnode, offset, length, | |
482 | buffer, wait_mode); | |
483 | ||
08e0e7c8 | 484 | _enter(""); |
1da177e4 | 485 | |
260a9803 | 486 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
487 | if (!call) |
488 | return -ENOMEM; | |
1da177e4 | 489 | |
00d3b7a4 | 490 | call->key = key; |
08e0e7c8 | 491 | call->reply = vnode; |
260a9803 | 492 | call->reply2 = NULL; /* volsync */ |
08e0e7c8 DH |
493 | call->reply3 = buffer; |
494 | call->service_id = FS_SERVICE; | |
495 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 496 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
497 | |
498 | /* marshall the parameters */ | |
08e0e7c8 DH |
499 | bp = call->request; |
500 | bp[0] = htonl(FSFETCHDATA); | |
501 | bp[1] = htonl(vnode->fid.vid); | |
502 | bp[2] = htonl(vnode->fid.vnode); | |
503 | bp[3] = htonl(vnode->fid.unique); | |
504 | bp[4] = htonl(offset); | |
505 | bp[5] = htonl(length); | |
1da177e4 | 506 | |
08e0e7c8 DH |
507 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
508 | } | |
1da177e4 | 509 | |
08e0e7c8 DH |
510 | /* |
511 | * deliver reply data to an FS.GiveUpCallBacks | |
512 | */ | |
d001648e | 513 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call) |
08e0e7c8 | 514 | { |
d001648e | 515 | _enter(""); |
1da177e4 | 516 | |
372ee163 | 517 | /* shouldn't be any reply data */ |
d001648e | 518 | return afs_extract_data(call, NULL, 0, false); |
ec26815a | 519 | } |
1da177e4 | 520 | |
1da177e4 | 521 | /* |
08e0e7c8 DH |
522 | * FS.GiveUpCallBacks operation type |
523 | */ | |
524 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 525 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
526 | .deliver = afs_deliver_fs_give_up_callbacks, |
527 | .abort_to_error = afs_abort_to_error, | |
528 | .destructor = afs_flat_call_destructor, | |
529 | }; | |
530 | ||
531 | /* | |
532 | * give up a set of callbacks | |
533 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 534 | */ |
08e0e7c8 DH |
535 | int afs_fs_give_up_callbacks(struct afs_server *server, |
536 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 537 | { |
08e0e7c8 DH |
538 | struct afs_call *call; |
539 | size_t ncallbacks; | |
540 | __be32 *bp, *tp; | |
541 | int loop; | |
1da177e4 | 542 | |
08e0e7c8 DH |
543 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
544 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 545 | |
08e0e7c8 | 546 | _enter("{%zu},", ncallbacks); |
1da177e4 | 547 | |
08e0e7c8 DH |
548 | if (ncallbacks == 0) |
549 | return 0; | |
550 | if (ncallbacks > AFSCBMAX) | |
551 | ncallbacks = AFSCBMAX; | |
1da177e4 | 552 | |
08e0e7c8 | 553 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 554 | |
08e0e7c8 DH |
555 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
556 | 12 + ncallbacks * 6 * 4, 0); | |
557 | if (!call) | |
558 | return -ENOMEM; | |
559 | ||
560 | call->service_id = FS_SERVICE; | |
561 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
562 | |
563 | /* marshall the parameters */ | |
08e0e7c8 DH |
564 | bp = call->request; |
565 | tp = bp + 2 + ncallbacks * 3; | |
566 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
567 | *bp++ = htonl(ncallbacks); | |
568 | *tp++ = htonl(ncallbacks); | |
569 | ||
570 | atomic_sub(ncallbacks, &server->cb_break_n); | |
571 | for (loop = ncallbacks; loop > 0; loop--) { | |
572 | struct afs_callback *cb = | |
573 | &server->cb_break[server->cb_break_tail]; | |
574 | ||
575 | *bp++ = htonl(cb->fid.vid); | |
576 | *bp++ = htonl(cb->fid.vnode); | |
577 | *bp++ = htonl(cb->fid.unique); | |
578 | *tp++ = htonl(cb->version); | |
579 | *tp++ = htonl(cb->expiry); | |
580 | *tp++ = htonl(cb->type); | |
581 | smp_mb(); | |
582 | server->cb_break_tail = | |
583 | (server->cb_break_tail + 1) & | |
584 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
585 | } |
586 | ||
08e0e7c8 DH |
587 | ASSERT(ncallbacks > 0); |
588 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 589 | |
08e0e7c8 | 590 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 591 | } |
260a9803 DH |
592 | |
593 | /* | |
594 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
595 | */ | |
d001648e | 596 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
260a9803 DH |
597 | { |
598 | struct afs_vnode *vnode = call->reply; | |
599 | const __be32 *bp; | |
372ee163 | 600 | int ret; |
260a9803 | 601 | |
d001648e | 602 | _enter("{%u}", call->unmarshall); |
260a9803 | 603 | |
d001648e | 604 | ret = afs_transfer_reply(call); |
372ee163 DH |
605 | if (ret < 0) |
606 | return ret; | |
260a9803 DH |
607 | |
608 | /* unmarshall the reply once we've received all of it */ | |
609 | bp = call->buffer; | |
610 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
611 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
612 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
613 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
614 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
615 | ||
616 | _leave(" = 0 [done]"); | |
617 | return 0; | |
618 | } | |
619 | ||
620 | /* | |
621 | * FS.CreateFile and FS.MakeDir operation type | |
622 | */ | |
623 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
624 | .name = "FS.CreateXXXX", | |
625 | .deliver = afs_deliver_fs_create_vnode, | |
626 | .abort_to_error = afs_abort_to_error, | |
627 | .destructor = afs_flat_call_destructor, | |
628 | }; | |
629 | ||
630 | /* | |
631 | * create a file or make a directory | |
632 | */ | |
633 | int afs_fs_create(struct afs_server *server, | |
634 | struct key *key, | |
635 | struct afs_vnode *vnode, | |
636 | const char *name, | |
637 | umode_t mode, | |
638 | struct afs_fid *newfid, | |
639 | struct afs_file_status *newstatus, | |
640 | struct afs_callback *newcb, | |
641 | const struct afs_wait_mode *wait_mode) | |
642 | { | |
643 | struct afs_call *call; | |
644 | size_t namesz, reqsz, padsz; | |
645 | __be32 *bp; | |
646 | ||
647 | _enter(""); | |
648 | ||
649 | namesz = strlen(name); | |
650 | padsz = (4 - (namesz & 3)) & 3; | |
651 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
652 | ||
653 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
654 | (3 + 21 + 21 + 3 + 6) * 4); | |
655 | if (!call) | |
656 | return -ENOMEM; | |
657 | ||
658 | call->key = key; | |
659 | call->reply = vnode; | |
660 | call->reply2 = newfid; | |
661 | call->reply3 = newstatus; | |
662 | call->reply4 = newcb; | |
663 | call->service_id = FS_SERVICE; | |
664 | call->port = htons(AFS_FS_PORT); | |
665 | ||
666 | /* marshall the parameters */ | |
667 | bp = call->request; | |
668 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
669 | *bp++ = htonl(vnode->fid.vid); | |
670 | *bp++ = htonl(vnode->fid.vnode); | |
671 | *bp++ = htonl(vnode->fid.unique); | |
672 | *bp++ = htonl(namesz); | |
673 | memcpy(bp, name, namesz); | |
674 | bp = (void *) bp + namesz; | |
675 | if (padsz > 0) { | |
676 | memset(bp, 0, padsz); | |
677 | bp = (void *) bp + padsz; | |
678 | } | |
679 | *bp++ = htonl(AFS_SET_MODE); | |
680 | *bp++ = 0; /* mtime */ | |
681 | *bp++ = 0; /* owner */ | |
682 | *bp++ = 0; /* group */ | |
683 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
684 | *bp++ = 0; /* segment size */ | |
685 | ||
686 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
687 | } | |
688 | ||
689 | /* | |
690 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
691 | */ | |
d001648e | 692 | static int afs_deliver_fs_remove(struct afs_call *call) |
260a9803 DH |
693 | { |
694 | struct afs_vnode *vnode = call->reply; | |
695 | const __be32 *bp; | |
372ee163 | 696 | int ret; |
260a9803 | 697 | |
d001648e | 698 | _enter("{%u}", call->unmarshall); |
260a9803 | 699 | |
d001648e | 700 | ret = afs_transfer_reply(call); |
372ee163 DH |
701 | if (ret < 0) |
702 | return ret; | |
260a9803 DH |
703 | |
704 | /* unmarshall the reply once we've received all of it */ | |
705 | bp = call->buffer; | |
31143d5d | 706 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
707 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
708 | ||
709 | _leave(" = 0 [done]"); | |
710 | return 0; | |
711 | } | |
712 | ||
713 | /* | |
714 | * FS.RemoveDir/FS.RemoveFile operation type | |
715 | */ | |
716 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
717 | .name = "FS.RemoveXXXX", | |
718 | .deliver = afs_deliver_fs_remove, | |
719 | .abort_to_error = afs_abort_to_error, | |
720 | .destructor = afs_flat_call_destructor, | |
721 | }; | |
722 | ||
723 | /* | |
724 | * remove a file or directory | |
725 | */ | |
726 | int afs_fs_remove(struct afs_server *server, | |
727 | struct key *key, | |
728 | struct afs_vnode *vnode, | |
729 | const char *name, | |
730 | bool isdir, | |
731 | const struct afs_wait_mode *wait_mode) | |
732 | { | |
733 | struct afs_call *call; | |
734 | size_t namesz, reqsz, padsz; | |
735 | __be32 *bp; | |
736 | ||
737 | _enter(""); | |
738 | ||
739 | namesz = strlen(name); | |
740 | padsz = (4 - (namesz & 3)) & 3; | |
741 | reqsz = (5 * 4) + namesz + padsz; | |
742 | ||
743 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
744 | if (!call) | |
745 | return -ENOMEM; | |
746 | ||
747 | call->key = key; | |
748 | call->reply = vnode; | |
749 | call->service_id = FS_SERVICE; | |
750 | call->port = htons(AFS_FS_PORT); | |
751 | ||
752 | /* marshall the parameters */ | |
753 | bp = call->request; | |
754 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
755 | *bp++ = htonl(vnode->fid.vid); | |
756 | *bp++ = htonl(vnode->fid.vnode); | |
757 | *bp++ = htonl(vnode->fid.unique); | |
758 | *bp++ = htonl(namesz); | |
759 | memcpy(bp, name, namesz); | |
760 | bp = (void *) bp + namesz; | |
761 | if (padsz > 0) { | |
762 | memset(bp, 0, padsz); | |
763 | bp = (void *) bp + padsz; | |
764 | } | |
765 | ||
766 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
767 | } | |
768 | ||
769 | /* | |
770 | * deliver reply data to an FS.Link | |
771 | */ | |
d001648e | 772 | static int afs_deliver_fs_link(struct afs_call *call) |
260a9803 DH |
773 | { |
774 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
775 | const __be32 *bp; | |
372ee163 | 776 | int ret; |
260a9803 | 777 | |
d001648e | 778 | _enter("{%u}", call->unmarshall); |
260a9803 | 779 | |
d001648e | 780 | ret = afs_transfer_reply(call); |
372ee163 DH |
781 | if (ret < 0) |
782 | return ret; | |
260a9803 DH |
783 | |
784 | /* unmarshall the reply once we've received all of it */ | |
785 | bp = call->buffer; | |
31143d5d DH |
786 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
787 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
788 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
789 | ||
790 | _leave(" = 0 [done]"); | |
791 | return 0; | |
792 | } | |
793 | ||
794 | /* | |
795 | * FS.Link operation type | |
796 | */ | |
797 | static const struct afs_call_type afs_RXFSLink = { | |
798 | .name = "FS.Link", | |
799 | .deliver = afs_deliver_fs_link, | |
800 | .abort_to_error = afs_abort_to_error, | |
801 | .destructor = afs_flat_call_destructor, | |
802 | }; | |
803 | ||
804 | /* | |
805 | * make a hard link | |
806 | */ | |
807 | int afs_fs_link(struct afs_server *server, | |
808 | struct key *key, | |
809 | struct afs_vnode *dvnode, | |
810 | struct afs_vnode *vnode, | |
811 | const char *name, | |
812 | const struct afs_wait_mode *wait_mode) | |
813 | { | |
814 | struct afs_call *call; | |
815 | size_t namesz, reqsz, padsz; | |
816 | __be32 *bp; | |
817 | ||
818 | _enter(""); | |
819 | ||
820 | namesz = strlen(name); | |
821 | padsz = (4 - (namesz & 3)) & 3; | |
822 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
823 | ||
824 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
825 | if (!call) | |
826 | return -ENOMEM; | |
827 | ||
828 | call->key = key; | |
829 | call->reply = dvnode; | |
830 | call->reply2 = vnode; | |
831 | call->service_id = FS_SERVICE; | |
832 | call->port = htons(AFS_FS_PORT); | |
833 | ||
834 | /* marshall the parameters */ | |
835 | bp = call->request; | |
836 | *bp++ = htonl(FSLINK); | |
837 | *bp++ = htonl(dvnode->fid.vid); | |
838 | *bp++ = htonl(dvnode->fid.vnode); | |
839 | *bp++ = htonl(dvnode->fid.unique); | |
840 | *bp++ = htonl(namesz); | |
841 | memcpy(bp, name, namesz); | |
842 | bp = (void *) bp + namesz; | |
843 | if (padsz > 0) { | |
844 | memset(bp, 0, padsz); | |
845 | bp = (void *) bp + padsz; | |
846 | } | |
847 | *bp++ = htonl(vnode->fid.vid); | |
848 | *bp++ = htonl(vnode->fid.vnode); | |
849 | *bp++ = htonl(vnode->fid.unique); | |
850 | ||
851 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
852 | } | |
853 | ||
854 | /* | |
855 | * deliver reply data to an FS.Symlink | |
856 | */ | |
d001648e | 857 | static int afs_deliver_fs_symlink(struct afs_call *call) |
260a9803 DH |
858 | { |
859 | struct afs_vnode *vnode = call->reply; | |
860 | const __be32 *bp; | |
372ee163 | 861 | int ret; |
260a9803 | 862 | |
d001648e | 863 | _enter("{%u}", call->unmarshall); |
260a9803 | 864 | |
d001648e | 865 | ret = afs_transfer_reply(call); |
372ee163 DH |
866 | if (ret < 0) |
867 | return ret; | |
260a9803 DH |
868 | |
869 | /* unmarshall the reply once we've received all of it */ | |
870 | bp = call->buffer; | |
871 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
872 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
873 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
874 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
875 | ||
876 | _leave(" = 0 [done]"); | |
877 | return 0; | |
878 | } | |
879 | ||
880 | /* | |
881 | * FS.Symlink operation type | |
882 | */ | |
883 | static const struct afs_call_type afs_RXFSSymlink = { | |
884 | .name = "FS.Symlink", | |
885 | .deliver = afs_deliver_fs_symlink, | |
886 | .abort_to_error = afs_abort_to_error, | |
887 | .destructor = afs_flat_call_destructor, | |
888 | }; | |
889 | ||
890 | /* | |
891 | * create a symbolic link | |
892 | */ | |
893 | int afs_fs_symlink(struct afs_server *server, | |
894 | struct key *key, | |
895 | struct afs_vnode *vnode, | |
896 | const char *name, | |
897 | const char *contents, | |
898 | struct afs_fid *newfid, | |
899 | struct afs_file_status *newstatus, | |
900 | const struct afs_wait_mode *wait_mode) | |
901 | { | |
902 | struct afs_call *call; | |
903 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
904 | __be32 *bp; | |
905 | ||
906 | _enter(""); | |
907 | ||
908 | namesz = strlen(name); | |
909 | padsz = (4 - (namesz & 3)) & 3; | |
910 | ||
911 | c_namesz = strlen(contents); | |
912 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
913 | ||
914 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
915 | ||
916 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
917 | (3 + 21 + 21 + 6) * 4); | |
918 | if (!call) | |
919 | return -ENOMEM; | |
920 | ||
921 | call->key = key; | |
922 | call->reply = vnode; | |
923 | call->reply2 = newfid; | |
924 | call->reply3 = newstatus; | |
925 | call->service_id = FS_SERVICE; | |
926 | call->port = htons(AFS_FS_PORT); | |
927 | ||
928 | /* marshall the parameters */ | |
929 | bp = call->request; | |
930 | *bp++ = htonl(FSSYMLINK); | |
931 | *bp++ = htonl(vnode->fid.vid); | |
932 | *bp++ = htonl(vnode->fid.vnode); | |
933 | *bp++ = htonl(vnode->fid.unique); | |
934 | *bp++ = htonl(namesz); | |
935 | memcpy(bp, name, namesz); | |
936 | bp = (void *) bp + namesz; | |
937 | if (padsz > 0) { | |
938 | memset(bp, 0, padsz); | |
939 | bp = (void *) bp + padsz; | |
940 | } | |
941 | *bp++ = htonl(c_namesz); | |
942 | memcpy(bp, contents, c_namesz); | |
943 | bp = (void *) bp + c_namesz; | |
944 | if (c_padsz > 0) { | |
945 | memset(bp, 0, c_padsz); | |
946 | bp = (void *) bp + c_padsz; | |
947 | } | |
948 | *bp++ = htonl(AFS_SET_MODE); | |
949 | *bp++ = 0; /* mtime */ | |
950 | *bp++ = 0; /* owner */ | |
951 | *bp++ = 0; /* group */ | |
952 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
953 | *bp++ = 0; /* segment size */ | |
954 | ||
955 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
956 | } | |
957 | ||
958 | /* | |
959 | * deliver reply data to an FS.Rename | |
960 | */ | |
d001648e | 961 | static int afs_deliver_fs_rename(struct afs_call *call) |
260a9803 DH |
962 | { |
963 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
964 | const __be32 *bp; | |
372ee163 | 965 | int ret; |
260a9803 | 966 | |
d001648e | 967 | _enter("{%u}", call->unmarshall); |
260a9803 | 968 | |
d001648e | 969 | ret = afs_transfer_reply(call); |
372ee163 DH |
970 | if (ret < 0) |
971 | return ret; | |
260a9803 DH |
972 | |
973 | /* unmarshall the reply once we've received all of it */ | |
974 | bp = call->buffer; | |
31143d5d | 975 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 976 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
977 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
978 | NULL); | |
260a9803 DH |
979 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
980 | ||
981 | _leave(" = 0 [done]"); | |
982 | return 0; | |
983 | } | |
984 | ||
985 | /* | |
986 | * FS.Rename operation type | |
987 | */ | |
988 | static const struct afs_call_type afs_RXFSRename = { | |
989 | .name = "FS.Rename", | |
990 | .deliver = afs_deliver_fs_rename, | |
991 | .abort_to_error = afs_abort_to_error, | |
992 | .destructor = afs_flat_call_destructor, | |
993 | }; | |
994 | ||
995 | /* | |
996 | * create a symbolic link | |
997 | */ | |
998 | int afs_fs_rename(struct afs_server *server, | |
999 | struct key *key, | |
1000 | struct afs_vnode *orig_dvnode, | |
1001 | const char *orig_name, | |
1002 | struct afs_vnode *new_dvnode, | |
1003 | const char *new_name, | |
1004 | const struct afs_wait_mode *wait_mode) | |
1005 | { | |
1006 | struct afs_call *call; | |
1007 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1008 | __be32 *bp; | |
1009 | ||
1010 | _enter(""); | |
1011 | ||
1012 | o_namesz = strlen(orig_name); | |
1013 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1014 | ||
1015 | n_namesz = strlen(new_name); | |
1016 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1017 | ||
1018 | reqsz = (4 * 4) + | |
1019 | 4 + o_namesz + o_padsz + | |
1020 | (3 * 4) + | |
1021 | 4 + n_namesz + n_padsz; | |
1022 | ||
1023 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1024 | if (!call) | |
1025 | return -ENOMEM; | |
1026 | ||
1027 | call->key = key; | |
1028 | call->reply = orig_dvnode; | |
1029 | call->reply2 = new_dvnode; | |
1030 | call->service_id = FS_SERVICE; | |
1031 | call->port = htons(AFS_FS_PORT); | |
1032 | ||
1033 | /* marshall the parameters */ | |
1034 | bp = call->request; | |
1035 | *bp++ = htonl(FSRENAME); | |
1036 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1037 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1038 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1039 | *bp++ = htonl(o_namesz); | |
1040 | memcpy(bp, orig_name, o_namesz); | |
1041 | bp = (void *) bp + o_namesz; | |
1042 | if (o_padsz > 0) { | |
1043 | memset(bp, 0, o_padsz); | |
1044 | bp = (void *) bp + o_padsz; | |
1045 | } | |
1046 | ||
1047 | *bp++ = htonl(new_dvnode->fid.vid); | |
1048 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1049 | *bp++ = htonl(new_dvnode->fid.unique); | |
1050 | *bp++ = htonl(n_namesz); | |
1051 | memcpy(bp, new_name, n_namesz); | |
1052 | bp = (void *) bp + n_namesz; | |
1053 | if (n_padsz > 0) { | |
1054 | memset(bp, 0, n_padsz); | |
1055 | bp = (void *) bp + n_padsz; | |
1056 | } | |
1057 | ||
1058 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1059 | } | |
31143d5d DH |
1060 | |
1061 | /* | |
1062 | * deliver reply data to an FS.StoreData | |
1063 | */ | |
d001648e | 1064 | static int afs_deliver_fs_store_data(struct afs_call *call) |
31143d5d DH |
1065 | { |
1066 | struct afs_vnode *vnode = call->reply; | |
1067 | const __be32 *bp; | |
372ee163 | 1068 | int ret; |
31143d5d | 1069 | |
d001648e | 1070 | _enter(""); |
31143d5d | 1071 | |
d001648e | 1072 | ret = afs_transfer_reply(call); |
372ee163 DH |
1073 | if (ret < 0) |
1074 | return ret; | |
31143d5d DH |
1075 | |
1076 | /* unmarshall the reply once we've received all of it */ | |
1077 | bp = call->buffer; | |
1078 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1079 | &call->store_version); | |
1080 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1081 | ||
1082 | afs_pages_written_back(vnode, call); | |
1083 | ||
1084 | _leave(" = 0 [done]"); | |
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * FS.StoreData operation type | |
1090 | */ | |
1091 | static const struct afs_call_type afs_RXFSStoreData = { | |
1092 | .name = "FS.StoreData", | |
1093 | .deliver = afs_deliver_fs_store_data, | |
1094 | .abort_to_error = afs_abort_to_error, | |
1095 | .destructor = afs_flat_call_destructor, | |
1096 | }; | |
1097 | ||
b9b1f8d5 DH |
1098 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1099 | .name = "FS.StoreData64", | |
1100 | .deliver = afs_deliver_fs_store_data, | |
1101 | .abort_to_error = afs_abort_to_error, | |
1102 | .destructor = afs_flat_call_destructor, | |
1103 | }; | |
1104 | ||
1105 | /* | |
1106 | * store a set of pages to a very large file | |
1107 | */ | |
1108 | static int afs_fs_store_data64(struct afs_server *server, | |
1109 | struct afs_writeback *wb, | |
1110 | pgoff_t first, pgoff_t last, | |
1111 | unsigned offset, unsigned to, | |
1112 | loff_t size, loff_t pos, loff_t i_size, | |
1113 | const struct afs_wait_mode *wait_mode) | |
1114 | { | |
1115 | struct afs_vnode *vnode = wb->vnode; | |
1116 | struct afs_call *call; | |
1117 | __be32 *bp; | |
1118 | ||
1119 | _enter(",%x,{%x:%u},,", | |
1120 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1121 | ||
1122 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1123 | (4 + 6 + 3 * 2) * 4, | |
1124 | (21 + 6) * 4); | |
1125 | if (!call) | |
1126 | return -ENOMEM; | |
1127 | ||
1128 | call->wb = wb; | |
1129 | call->key = wb->key; | |
1130 | call->reply = vnode; | |
1131 | call->service_id = FS_SERVICE; | |
1132 | call->port = htons(AFS_FS_PORT); | |
1133 | call->mapping = vnode->vfs_inode.i_mapping; | |
1134 | call->first = first; | |
1135 | call->last = last; | |
1136 | call->first_offset = offset; | |
1137 | call->last_to = to; | |
1138 | call->send_pages = true; | |
1139 | call->store_version = vnode->status.data_version + 1; | |
1140 | ||
1141 | /* marshall the parameters */ | |
1142 | bp = call->request; | |
1143 | *bp++ = htonl(FSSTOREDATA64); | |
1144 | *bp++ = htonl(vnode->fid.vid); | |
1145 | *bp++ = htonl(vnode->fid.vnode); | |
1146 | *bp++ = htonl(vnode->fid.unique); | |
1147 | ||
1148 | *bp++ = 0; /* mask */ | |
1149 | *bp++ = 0; /* mtime */ | |
1150 | *bp++ = 0; /* owner */ | |
1151 | *bp++ = 0; /* group */ | |
1152 | *bp++ = 0; /* unix mode */ | |
1153 | *bp++ = 0; /* segment size */ | |
1154 | ||
1155 | *bp++ = htonl(pos >> 32); | |
1156 | *bp++ = htonl((u32) pos); | |
1157 | *bp++ = htonl(size >> 32); | |
1158 | *bp++ = htonl((u32) size); | |
1159 | *bp++ = htonl(i_size >> 32); | |
1160 | *bp++ = htonl((u32) i_size); | |
1161 | ||
1162 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1163 | } | |
1164 | ||
31143d5d DH |
1165 | /* |
1166 | * store a set of pages | |
1167 | */ | |
1168 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1169 | pgoff_t first, pgoff_t last, | |
1170 | unsigned offset, unsigned to, | |
1171 | const struct afs_wait_mode *wait_mode) | |
1172 | { | |
1173 | struct afs_vnode *vnode = wb->vnode; | |
1174 | struct afs_call *call; | |
1175 | loff_t size, pos, i_size; | |
1176 | __be32 *bp; | |
1177 | ||
1178 | _enter(",%x,{%x:%u},,", | |
1179 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1180 | ||
1181 | size = to - offset; | |
1182 | if (first != last) | |
1183 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1184 | pos = (loff_t)first << PAGE_SHIFT; | |
1185 | pos += offset; | |
1186 | ||
1187 | i_size = i_size_read(&vnode->vfs_inode); | |
1188 | if (pos + size > i_size) | |
1189 | i_size = size + pos; | |
1190 | ||
1191 | _debug("size %llx, at %llx, i_size %llx", | |
1192 | (unsigned long long) size, (unsigned long long) pos, | |
1193 | (unsigned long long) i_size); | |
1194 | ||
b9b1f8d5 DH |
1195 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1196 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
1197 | size, pos, i_size, wait_mode); | |
31143d5d DH |
1198 | |
1199 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1200 | (4 + 6 + 3) * 4, | |
1201 | (21 + 6) * 4); | |
1202 | if (!call) | |
1203 | return -ENOMEM; | |
1204 | ||
1205 | call->wb = wb; | |
1206 | call->key = wb->key; | |
1207 | call->reply = vnode; | |
1208 | call->service_id = FS_SERVICE; | |
1209 | call->port = htons(AFS_FS_PORT); | |
1210 | call->mapping = vnode->vfs_inode.i_mapping; | |
1211 | call->first = first; | |
1212 | call->last = last; | |
1213 | call->first_offset = offset; | |
1214 | call->last_to = to; | |
1215 | call->send_pages = true; | |
1216 | call->store_version = vnode->status.data_version + 1; | |
1217 | ||
1218 | /* marshall the parameters */ | |
1219 | bp = call->request; | |
1220 | *bp++ = htonl(FSSTOREDATA); | |
1221 | *bp++ = htonl(vnode->fid.vid); | |
1222 | *bp++ = htonl(vnode->fid.vnode); | |
1223 | *bp++ = htonl(vnode->fid.unique); | |
1224 | ||
1225 | *bp++ = 0; /* mask */ | |
1226 | *bp++ = 0; /* mtime */ | |
1227 | *bp++ = 0; /* owner */ | |
1228 | *bp++ = 0; /* group */ | |
1229 | *bp++ = 0; /* unix mode */ | |
1230 | *bp++ = 0; /* segment size */ | |
1231 | ||
1232 | *bp++ = htonl(pos); | |
1233 | *bp++ = htonl(size); | |
1234 | *bp++ = htonl(i_size); | |
1235 | ||
1236 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1237 | } | |
1238 | ||
1239 | /* | |
1240 | * deliver reply data to an FS.StoreStatus | |
1241 | */ | |
d001648e | 1242 | static int afs_deliver_fs_store_status(struct afs_call *call) |
31143d5d DH |
1243 | { |
1244 | afs_dataversion_t *store_version; | |
1245 | struct afs_vnode *vnode = call->reply; | |
1246 | const __be32 *bp; | |
372ee163 | 1247 | int ret; |
31143d5d | 1248 | |
d001648e | 1249 | _enter(""); |
31143d5d | 1250 | |
d001648e | 1251 | ret = afs_transfer_reply(call); |
372ee163 DH |
1252 | if (ret < 0) |
1253 | return ret; | |
31143d5d DH |
1254 | |
1255 | /* unmarshall the reply once we've received all of it */ | |
1256 | store_version = NULL; | |
1257 | if (call->operation_ID == FSSTOREDATA) | |
1258 | store_version = &call->store_version; | |
1259 | ||
1260 | bp = call->buffer; | |
1261 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1262 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1263 | ||
1264 | _leave(" = 0 [done]"); | |
1265 | return 0; | |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * FS.StoreStatus operation type | |
1270 | */ | |
1271 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1272 | .name = "FS.StoreStatus", | |
1273 | .deliver = afs_deliver_fs_store_status, | |
1274 | .abort_to_error = afs_abort_to_error, | |
1275 | .destructor = afs_flat_call_destructor, | |
1276 | }; | |
1277 | ||
1278 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1279 | .name = "FS.StoreData", | |
1280 | .deliver = afs_deliver_fs_store_status, | |
1281 | .abort_to_error = afs_abort_to_error, | |
1282 | .destructor = afs_flat_call_destructor, | |
1283 | }; | |
1284 | ||
b9b1f8d5 DH |
1285 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1286 | .name = "FS.StoreData64", | |
1287 | .deliver = afs_deliver_fs_store_status, | |
1288 | .abort_to_error = afs_abort_to_error, | |
1289 | .destructor = afs_flat_call_destructor, | |
1290 | }; | |
1291 | ||
1292 | /* | |
1293 | * set the attributes on a very large file, using FS.StoreData rather than | |
1294 | * FS.StoreStatus so as to alter the file size also | |
1295 | */ | |
1296 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1297 | struct afs_vnode *vnode, struct iattr *attr, | |
1298 | const struct afs_wait_mode *wait_mode) | |
1299 | { | |
1300 | struct afs_call *call; | |
1301 | __be32 *bp; | |
1302 | ||
1303 | _enter(",%x,{%x:%u},,", | |
1304 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1305 | ||
1306 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1307 | ||
1308 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1309 | (4 + 6 + 3 * 2) * 4, | |
1310 | (21 + 6) * 4); | |
1311 | if (!call) | |
1312 | return -ENOMEM; | |
1313 | ||
1314 | call->key = key; | |
1315 | call->reply = vnode; | |
1316 | call->service_id = FS_SERVICE; | |
1317 | call->port = htons(AFS_FS_PORT); | |
1318 | call->store_version = vnode->status.data_version + 1; | |
1319 | call->operation_ID = FSSTOREDATA; | |
1320 | ||
1321 | /* marshall the parameters */ | |
1322 | bp = call->request; | |
1323 | *bp++ = htonl(FSSTOREDATA64); | |
1324 | *bp++ = htonl(vnode->fid.vid); | |
1325 | *bp++ = htonl(vnode->fid.vnode); | |
1326 | *bp++ = htonl(vnode->fid.unique); | |
1327 | ||
1328 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1329 | ||
1330 | *bp++ = 0; /* position of start of write */ | |
1331 | *bp++ = 0; | |
1332 | *bp++ = 0; /* size of write */ | |
1333 | *bp++ = 0; | |
1334 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1335 | *bp++ = htonl((u32) attr->ia_size); | |
1336 | ||
1337 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1338 | } | |
1339 | ||
31143d5d DH |
1340 | /* |
1341 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1342 | * so as to alter the file size also | |
1343 | */ | |
1344 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1345 | struct afs_vnode *vnode, struct iattr *attr, | |
1346 | const struct afs_wait_mode *wait_mode) | |
1347 | { | |
1348 | struct afs_call *call; | |
1349 | __be32 *bp; | |
1350 | ||
1351 | _enter(",%x,{%x:%u},,", | |
1352 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1353 | ||
1354 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1355 | if (attr->ia_size >> 32) |
1356 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
1357 | wait_mode); | |
31143d5d DH |
1358 | |
1359 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1360 | (4 + 6 + 3) * 4, | |
1361 | (21 + 6) * 4); | |
1362 | if (!call) | |
1363 | return -ENOMEM; | |
1364 | ||
1365 | call->key = key; | |
1366 | call->reply = vnode; | |
1367 | call->service_id = FS_SERVICE; | |
1368 | call->port = htons(AFS_FS_PORT); | |
1369 | call->store_version = vnode->status.data_version + 1; | |
1370 | call->operation_ID = FSSTOREDATA; | |
1371 | ||
1372 | /* marshall the parameters */ | |
1373 | bp = call->request; | |
1374 | *bp++ = htonl(FSSTOREDATA); | |
1375 | *bp++ = htonl(vnode->fid.vid); | |
1376 | *bp++ = htonl(vnode->fid.vnode); | |
1377 | *bp++ = htonl(vnode->fid.unique); | |
1378 | ||
1379 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1380 | ||
1381 | *bp++ = 0; /* position of start of write */ | |
1382 | *bp++ = 0; /* size of write */ | |
1383 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1384 | ||
1385 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1390 | * size, and FS.StoreStatus otherwise | |
1391 | */ | |
1392 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1393 | struct afs_vnode *vnode, struct iattr *attr, | |
1394 | const struct afs_wait_mode *wait_mode) | |
1395 | { | |
1396 | struct afs_call *call; | |
1397 | __be32 *bp; | |
1398 | ||
1399 | if (attr->ia_valid & ATTR_SIZE) | |
1400 | return afs_fs_setattr_size(server, key, vnode, attr, | |
1401 | wait_mode); | |
1402 | ||
1403 | _enter(",%x,{%x:%u},,", | |
1404 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1405 | ||
1406 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1407 | (4 + 6) * 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->operation_ID = FSSTORESTATUS; | |
1417 | ||
1418 | /* marshall the parameters */ | |
1419 | bp = call->request; | |
1420 | *bp++ = htonl(FSSTORESTATUS); | |
1421 | *bp++ = htonl(vnode->fid.vid); | |
1422 | *bp++ = htonl(vnode->fid.vnode); | |
1423 | *bp++ = htonl(vnode->fid.unique); | |
1424 | ||
1425 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1426 | ||
1427 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1428 | } | |
45222b9e DH |
1429 | |
1430 | /* | |
1431 | * deliver reply data to an FS.GetVolumeStatus | |
1432 | */ | |
d001648e | 1433 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
45222b9e DH |
1434 | { |
1435 | const __be32 *bp; | |
1436 | char *p; | |
1437 | int ret; | |
1438 | ||
d001648e | 1439 | _enter("{%u}", call->unmarshall); |
45222b9e DH |
1440 | |
1441 | switch (call->unmarshall) { | |
1442 | case 0: | |
1443 | call->offset = 0; | |
1444 | call->unmarshall++; | |
1445 | ||
1446 | /* extract the returned status record */ | |
1447 | case 1: | |
1448 | _debug("extract status"); | |
d001648e DH |
1449 | ret = afs_extract_data(call, call->buffer, |
1450 | 12 * 4, true); | |
372ee163 DH |
1451 | if (ret < 0) |
1452 | return ret; | |
45222b9e DH |
1453 | |
1454 | bp = call->buffer; | |
1455 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); | |
1456 | call->offset = 0; | |
1457 | call->unmarshall++; | |
1458 | ||
1459 | /* extract the volume name length */ | |
1460 | case 2: | |
d001648e | 1461 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1462 | if (ret < 0) |
1463 | return ret; | |
45222b9e DH |
1464 | |
1465 | call->count = ntohl(call->tmp); | |
1466 | _debug("volname length: %u", call->count); | |
1467 | if (call->count >= AFSNAMEMAX) | |
1468 | return -EBADMSG; | |
1469 | call->offset = 0; | |
1470 | call->unmarshall++; | |
1471 | ||
1472 | /* extract the volume name */ | |
1473 | case 3: | |
1474 | _debug("extract volname"); | |
1475 | if (call->count > 0) { | |
d001648e DH |
1476 | ret = afs_extract_data(call, call->reply3, |
1477 | call->count, true); | |
372ee163 DH |
1478 | if (ret < 0) |
1479 | return ret; | |
45222b9e DH |
1480 | } |
1481 | ||
1482 | p = call->reply3; | |
1483 | p[call->count] = 0; | |
1484 | _debug("volname '%s'", p); | |
1485 | ||
1486 | call->offset = 0; | |
1487 | call->unmarshall++; | |
1488 | ||
1489 | /* extract the volume name padding */ | |
1490 | if ((call->count & 3) == 0) { | |
1491 | call->unmarshall++; | |
1492 | goto no_volname_padding; | |
1493 | } | |
1494 | call->count = 4 - (call->count & 3); | |
1495 | ||
1496 | case 4: | |
d001648e DH |
1497 | ret = afs_extract_data(call, call->buffer, |
1498 | call->count, true); | |
372ee163 DH |
1499 | if (ret < 0) |
1500 | return ret; | |
45222b9e DH |
1501 | |
1502 | call->offset = 0; | |
1503 | call->unmarshall++; | |
1504 | no_volname_padding: | |
1505 | ||
1506 | /* extract the offline message length */ | |
1507 | case 5: | |
d001648e | 1508 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1509 | if (ret < 0) |
1510 | return ret; | |
45222b9e DH |
1511 | |
1512 | call->count = ntohl(call->tmp); | |
1513 | _debug("offline msg length: %u", call->count); | |
1514 | if (call->count >= AFSNAMEMAX) | |
1515 | return -EBADMSG; | |
1516 | call->offset = 0; | |
1517 | call->unmarshall++; | |
1518 | ||
1519 | /* extract the offline message */ | |
1520 | case 6: | |
1521 | _debug("extract offline"); | |
1522 | if (call->count > 0) { | |
d001648e DH |
1523 | ret = afs_extract_data(call, call->reply3, |
1524 | call->count, true); | |
372ee163 DH |
1525 | if (ret < 0) |
1526 | return ret; | |
45222b9e DH |
1527 | } |
1528 | ||
1529 | p = call->reply3; | |
1530 | p[call->count] = 0; | |
1531 | _debug("offline '%s'", p); | |
1532 | ||
1533 | call->offset = 0; | |
1534 | call->unmarshall++; | |
1535 | ||
1536 | /* extract the offline message padding */ | |
1537 | if ((call->count & 3) == 0) { | |
1538 | call->unmarshall++; | |
1539 | goto no_offline_padding; | |
1540 | } | |
1541 | call->count = 4 - (call->count & 3); | |
1542 | ||
1543 | case 7: | |
d001648e DH |
1544 | ret = afs_extract_data(call, call->buffer, |
1545 | call->count, true); | |
372ee163 DH |
1546 | if (ret < 0) |
1547 | return ret; | |
45222b9e DH |
1548 | |
1549 | call->offset = 0; | |
1550 | call->unmarshall++; | |
1551 | no_offline_padding: | |
1552 | ||
1553 | /* extract the message of the day length */ | |
1554 | case 8: | |
d001648e | 1555 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1556 | if (ret < 0) |
1557 | return ret; | |
45222b9e DH |
1558 | |
1559 | call->count = ntohl(call->tmp); | |
1560 | _debug("motd length: %u", call->count); | |
1561 | if (call->count >= AFSNAMEMAX) | |
1562 | return -EBADMSG; | |
1563 | call->offset = 0; | |
1564 | call->unmarshall++; | |
1565 | ||
1566 | /* extract the message of the day */ | |
1567 | case 9: | |
1568 | _debug("extract motd"); | |
1569 | if (call->count > 0) { | |
d001648e DH |
1570 | ret = afs_extract_data(call, call->reply3, |
1571 | call->count, true); | |
372ee163 DH |
1572 | if (ret < 0) |
1573 | return ret; | |
45222b9e DH |
1574 | } |
1575 | ||
1576 | p = call->reply3; | |
1577 | p[call->count] = 0; | |
1578 | _debug("motd '%s'", p); | |
1579 | ||
1580 | call->offset = 0; | |
1581 | call->unmarshall++; | |
1582 | ||
1583 | /* extract the message of the day padding */ | |
d001648e | 1584 | call->count = (4 - (call->count & 3)) & 3; |
45222b9e DH |
1585 | |
1586 | case 10: | |
d001648e DH |
1587 | ret = afs_extract_data(call, call->buffer, |
1588 | call->count, false); | |
372ee163 DH |
1589 | if (ret < 0) |
1590 | return ret; | |
45222b9e DH |
1591 | |
1592 | call->offset = 0; | |
1593 | call->unmarshall++; | |
45222b9e | 1594 | case 11: |
45222b9e DH |
1595 | break; |
1596 | } | |
1597 | ||
45222b9e DH |
1598 | _leave(" = 0 [done]"); |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | /* | |
1603 | * destroy an FS.GetVolumeStatus call | |
1604 | */ | |
1605 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1606 | { | |
1607 | kfree(call->reply3); | |
1608 | call->reply3 = NULL; | |
1609 | afs_flat_call_destructor(call); | |
1610 | } | |
1611 | ||
1612 | /* | |
1613 | * FS.GetVolumeStatus operation type | |
1614 | */ | |
1615 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1616 | .name = "FS.GetVolumeStatus", | |
1617 | .deliver = afs_deliver_fs_get_volume_status, | |
1618 | .abort_to_error = afs_abort_to_error, | |
1619 | .destructor = afs_get_volume_status_call_destructor, | |
1620 | }; | |
1621 | ||
1622 | /* | |
1623 | * fetch the status of a volume | |
1624 | */ | |
1625 | int afs_fs_get_volume_status(struct afs_server *server, | |
1626 | struct key *key, | |
1627 | struct afs_vnode *vnode, | |
1628 | struct afs_volume_status *vs, | |
1629 | const struct afs_wait_mode *wait_mode) | |
1630 | { | |
1631 | struct afs_call *call; | |
1632 | __be32 *bp; | |
1633 | void *tmpbuf; | |
1634 | ||
1635 | _enter(""); | |
1636 | ||
1637 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1638 | if (!tmpbuf) | |
1639 | return -ENOMEM; | |
1640 | ||
1641 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); | |
1642 | if (!call) { | |
1643 | kfree(tmpbuf); | |
1644 | return -ENOMEM; | |
1645 | } | |
1646 | ||
1647 | call->key = key; | |
1648 | call->reply = vnode; | |
1649 | call->reply2 = vs; | |
1650 | call->reply3 = tmpbuf; | |
1651 | call->service_id = FS_SERVICE; | |
1652 | call->port = htons(AFS_FS_PORT); | |
1653 | ||
1654 | /* marshall the parameters */ | |
1655 | bp = call->request; | |
1656 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1657 | bp[1] = htonl(vnode->fid.vid); | |
1658 | ||
1659 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1660 | } | |
e8d6c554 DH |
1661 | |
1662 | /* | |
1663 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1664 | */ | |
d001648e | 1665 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
e8d6c554 DH |
1666 | { |
1667 | const __be32 *bp; | |
372ee163 | 1668 | int ret; |
e8d6c554 | 1669 | |
d001648e | 1670 | _enter("{%u}", call->unmarshall); |
e8d6c554 | 1671 | |
d001648e | 1672 | ret = afs_transfer_reply(call); |
372ee163 DH |
1673 | if (ret < 0) |
1674 | return ret; | |
e8d6c554 DH |
1675 | |
1676 | /* unmarshall the reply once we've received all of it */ | |
1677 | bp = call->buffer; | |
1678 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1679 | ||
1680 | _leave(" = 0 [done]"); | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | /* | |
1685 | * FS.SetLock operation type | |
1686 | */ | |
1687 | static const struct afs_call_type afs_RXFSSetLock = { | |
1688 | .name = "FS.SetLock", | |
1689 | .deliver = afs_deliver_fs_xxxx_lock, | |
1690 | .abort_to_error = afs_abort_to_error, | |
1691 | .destructor = afs_flat_call_destructor, | |
1692 | }; | |
1693 | ||
1694 | /* | |
1695 | * FS.ExtendLock operation type | |
1696 | */ | |
1697 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1698 | .name = "FS.ExtendLock", | |
1699 | .deliver = afs_deliver_fs_xxxx_lock, | |
1700 | .abort_to_error = afs_abort_to_error, | |
1701 | .destructor = afs_flat_call_destructor, | |
1702 | }; | |
1703 | ||
1704 | /* | |
1705 | * FS.ReleaseLock operation type | |
1706 | */ | |
1707 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1708 | .name = "FS.ReleaseLock", | |
1709 | .deliver = afs_deliver_fs_xxxx_lock, | |
1710 | .abort_to_error = afs_abort_to_error, | |
1711 | .destructor = afs_flat_call_destructor, | |
1712 | }; | |
1713 | ||
1714 | /* | |
1715 | * get a lock on a file | |
1716 | */ | |
1717 | int afs_fs_set_lock(struct afs_server *server, | |
1718 | struct key *key, | |
1719 | struct afs_vnode *vnode, | |
1720 | afs_lock_type_t type, | |
1721 | const struct afs_wait_mode *wait_mode) | |
1722 | { | |
1723 | struct afs_call *call; | |
1724 | __be32 *bp; | |
1725 | ||
1726 | _enter(""); | |
1727 | ||
1728 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); | |
1729 | if (!call) | |
1730 | return -ENOMEM; | |
1731 | ||
1732 | call->key = key; | |
1733 | call->reply = vnode; | |
1734 | call->service_id = FS_SERVICE; | |
1735 | call->port = htons(AFS_FS_PORT); | |
1736 | ||
1737 | /* marshall the parameters */ | |
1738 | bp = call->request; | |
1739 | *bp++ = htonl(FSSETLOCK); | |
1740 | *bp++ = htonl(vnode->fid.vid); | |
1741 | *bp++ = htonl(vnode->fid.vnode); | |
1742 | *bp++ = htonl(vnode->fid.unique); | |
1743 | *bp++ = htonl(type); | |
1744 | ||
1745 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1746 | } | |
1747 | ||
1748 | /* | |
1749 | * extend a lock on a file | |
1750 | */ | |
1751 | int afs_fs_extend_lock(struct afs_server *server, | |
1752 | struct key *key, | |
1753 | struct afs_vnode *vnode, | |
1754 | const struct afs_wait_mode *wait_mode) | |
1755 | { | |
1756 | struct afs_call *call; | |
1757 | __be32 *bp; | |
1758 | ||
1759 | _enter(""); | |
1760 | ||
1761 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); | |
1762 | if (!call) | |
1763 | return -ENOMEM; | |
1764 | ||
1765 | call->key = key; | |
1766 | call->reply = vnode; | |
1767 | call->service_id = FS_SERVICE; | |
1768 | call->port = htons(AFS_FS_PORT); | |
1769 | ||
1770 | /* marshall the parameters */ | |
1771 | bp = call->request; | |
1772 | *bp++ = htonl(FSEXTENDLOCK); | |
1773 | *bp++ = htonl(vnode->fid.vid); | |
1774 | *bp++ = htonl(vnode->fid.vnode); | |
1775 | *bp++ = htonl(vnode->fid.unique); | |
1776 | ||
1777 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1778 | } | |
1779 | ||
1780 | /* | |
1781 | * release a lock on a file | |
1782 | */ | |
1783 | int afs_fs_release_lock(struct afs_server *server, | |
1784 | struct key *key, | |
1785 | struct afs_vnode *vnode, | |
1786 | const struct afs_wait_mode *wait_mode) | |
1787 | { | |
1788 | struct afs_call *call; | |
1789 | __be32 *bp; | |
1790 | ||
1791 | _enter(""); | |
1792 | ||
1793 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); | |
1794 | if (!call) | |
1795 | return -ENOMEM; | |
1796 | ||
1797 | call->key = key; | |
1798 | call->reply = vnode; | |
1799 | call->service_id = FS_SERVICE; | |
1800 | call->port = htons(AFS_FS_PORT); | |
1801 | ||
1802 | /* marshall the parameters */ | |
1803 | bp = call->request; | |
1804 | *bp++ = htonl(FSRELEASELOCK); | |
1805 | *bp++ = htonl(vnode->fid.vid); | |
1806 | *bp++ = htonl(vnode->fid.vnode); | |
1807 | *bp++ = htonl(vnode->fid.unique); | |
1808 | ||
1809 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1810 | } |