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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, | |
56ff9c83 | 278 | bool async) |
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 | ||
56ff9c83 | 303 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
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; |
196ee9cd | 312 | struct afs_read *req = call->reply3; |
08e0e7c8 | 313 | const __be32 *bp; |
196ee9cd | 314 | unsigned int size; |
08e0e7c8 | 315 | void *buffer; |
1da177e4 | 316 | int ret; |
1da177e4 | 317 | |
196ee9cd DH |
318 | _enter("{%u,%zu/%u;%u/%llu}", |
319 | call->unmarshall, call->offset, call->count, | |
320 | req->remain, req->actual_len); | |
08e0e7c8 DH |
321 | |
322 | switch (call->unmarshall) { | |
323 | case 0: | |
196ee9cd | 324 | req->actual_len = 0; |
08e0e7c8 DH |
325 | call->offset = 0; |
326 | call->unmarshall++; | |
b9b1f8d5 DH |
327 | if (call->operation_ID != FSFETCHDATA64) { |
328 | call->unmarshall++; | |
329 | goto no_msw; | |
330 | } | |
08e0e7c8 | 331 | |
b9b1f8d5 DH |
332 | /* extract the upper part of the returned data length of an |
333 | * FSFETCHDATA64 op (which should always be 0 using this | |
334 | * client) */ | |
08e0e7c8 | 335 | case 1: |
b9b1f8d5 | 336 | _debug("extract data length (MSW)"); |
d001648e | 337 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
338 | if (ret < 0) |
339 | return ret; | |
b9b1f8d5 | 340 | |
196ee9cd DH |
341 | req->actual_len = ntohl(call->tmp); |
342 | req->actual_len <<= 32; | |
b9b1f8d5 DH |
343 | call->offset = 0; |
344 | call->unmarshall++; | |
345 | ||
346 | no_msw: | |
347 | /* extract the returned data length */ | |
348 | case 2: | |
08e0e7c8 | 349 | _debug("extract data length"); |
d001648e | 350 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
351 | if (ret < 0) |
352 | return ret; | |
1da177e4 | 353 | |
196ee9cd DH |
354 | req->actual_len |= ntohl(call->tmp); |
355 | _debug("DATA length: %llu", req->actual_len); | |
356 | /* Check that the server didn't want to send us extra. We | |
357 | * might want to just discard instead, but that requires | |
358 | * cooperation from AF_RXRPC. | |
359 | */ | |
360 | if (req->actual_len > req->len) | |
08e0e7c8 | 361 | return -EBADMSG; |
196ee9cd DH |
362 | |
363 | req->remain = req->actual_len; | |
364 | call->offset = req->pos & (PAGE_SIZE - 1); | |
365 | req->index = 0; | |
366 | if (req->actual_len == 0) | |
367 | goto no_more_data; | |
08e0e7c8 DH |
368 | call->unmarshall++; |
369 | ||
196ee9cd DH |
370 | begin_page: |
371 | if (req->remain > PAGE_SIZE - call->offset) | |
372 | size = PAGE_SIZE - call->offset; | |
373 | else | |
374 | size = req->remain; | |
375 | call->count = call->offset + size; | |
376 | ASSERTCMP(call->count, <=, PAGE_SIZE); | |
377 | req->remain -= size; | |
378 | ||
08e0e7c8 | 379 | /* extract the returned data */ |
b9b1f8d5 | 380 | case 3: |
196ee9cd DH |
381 | _debug("extract data %u/%llu %zu/%u", |
382 | req->remain, req->actual_len, call->offset, call->count); | |
383 | ||
384 | buffer = kmap(req->pages[req->index]); | |
385 | ret = afs_extract_data(call, buffer, call->count, true); | |
386 | kunmap(req->pages[req->index]); | |
387 | if (ret < 0) | |
388 | return ret; | |
389 | if (call->offset == PAGE_SIZE) { | |
390 | if (req->page_done) | |
391 | req->page_done(call, req); | |
392 | if (req->remain > 0) { | |
393 | req->index++; | |
394 | call->offset = 0; | |
395 | goto begin_page; | |
396 | } | |
08e0e7c8 | 397 | } |
1da177e4 | 398 | |
196ee9cd | 399 | no_more_data: |
08e0e7c8 DH |
400 | call->offset = 0; |
401 | call->unmarshall++; | |
1da177e4 | 402 | |
08e0e7c8 | 403 | /* extract the metadata */ |
b9b1f8d5 | 404 | case 4: |
d001648e DH |
405 | ret = afs_extract_data(call, call->buffer, |
406 | (21 + 3 + 6) * 4, false); | |
372ee163 DH |
407 | if (ret < 0) |
408 | return ret; | |
08e0e7c8 DH |
409 | |
410 | bp = call->buffer; | |
31143d5d | 411 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 412 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
413 | if (call->reply2) |
414 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
415 | ||
416 | call->offset = 0; | |
417 | call->unmarshall++; | |
1da177e4 | 418 | |
b9b1f8d5 | 419 | case 5: |
08e0e7c8 | 420 | break; |
1da177e4 LT |
421 | } |
422 | ||
416351f2 | 423 | if (call->count < PAGE_SIZE) { |
196ee9cd | 424 | buffer = kmap(req->pages[req->index]); |
416351f2 | 425 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); |
196ee9cd DH |
426 | kunmap(req->pages[req->index]); |
427 | if (req->page_done) | |
428 | req->page_done(call, req); | |
416351f2 DH |
429 | } |
430 | ||
08e0e7c8 DH |
431 | _leave(" = 0 [done]"); |
432 | return 0; | |
ec26815a | 433 | } |
1da177e4 | 434 | |
196ee9cd DH |
435 | static void afs_fetch_data_destructor(struct afs_call *call) |
436 | { | |
437 | struct afs_read *req = call->reply3; | |
438 | ||
439 | afs_put_read(req); | |
440 | afs_flat_call_destructor(call); | |
441 | } | |
442 | ||
1da177e4 | 443 | /* |
08e0e7c8 | 444 | * FS.FetchData operation type |
1da177e4 | 445 | */ |
08e0e7c8 | 446 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 447 | .name = "FS.FetchData", |
08e0e7c8 DH |
448 | .deliver = afs_deliver_fs_fetch_data, |
449 | .abort_to_error = afs_abort_to_error, | |
196ee9cd | 450 | .destructor = afs_fetch_data_destructor, |
08e0e7c8 DH |
451 | }; |
452 | ||
b9b1f8d5 DH |
453 | static const struct afs_call_type afs_RXFSFetchData64 = { |
454 | .name = "FS.FetchData64", | |
455 | .deliver = afs_deliver_fs_fetch_data, | |
456 | .abort_to_error = afs_abort_to_error, | |
196ee9cd | 457 | .destructor = afs_fetch_data_destructor, |
b9b1f8d5 DH |
458 | }; |
459 | ||
460 | /* | |
461 | * fetch data from a very large file | |
462 | */ | |
463 | static int afs_fs_fetch_data64(struct afs_server *server, | |
464 | struct key *key, | |
465 | struct afs_vnode *vnode, | |
196ee9cd | 466 | struct afs_read *req, |
56ff9c83 | 467 | bool async) |
b9b1f8d5 DH |
468 | { |
469 | struct afs_call *call; | |
470 | __be32 *bp; | |
471 | ||
472 | _enter(""); | |
473 | ||
b9b1f8d5 DH |
474 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
475 | if (!call) | |
476 | return -ENOMEM; | |
477 | ||
478 | call->key = key; | |
479 | call->reply = vnode; | |
480 | call->reply2 = NULL; /* volsync */ | |
196ee9cd | 481 | call->reply3 = req; |
b9b1f8d5 DH |
482 | call->service_id = FS_SERVICE; |
483 | call->port = htons(AFS_FS_PORT); | |
484 | call->operation_ID = FSFETCHDATA64; | |
485 | ||
486 | /* marshall the parameters */ | |
487 | bp = call->request; | |
488 | bp[0] = htonl(FSFETCHDATA64); | |
489 | bp[1] = htonl(vnode->fid.vid); | |
490 | bp[2] = htonl(vnode->fid.vnode); | |
491 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
492 | bp[4] = htonl(upper_32_bits(req->pos)); |
493 | bp[5] = htonl(lower_32_bits(req->pos)); | |
b9b1f8d5 | 494 | bp[6] = 0; |
196ee9cd | 495 | bp[7] = htonl(lower_32_bits(req->len)); |
b9b1f8d5 | 496 | |
196ee9cd | 497 | atomic_inc(&req->usage); |
56ff9c83 | 498 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
499 | } |
500 | ||
08e0e7c8 DH |
501 | /* |
502 | * fetch data from a file | |
503 | */ | |
504 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 505 | struct key *key, |
08e0e7c8 | 506 | struct afs_vnode *vnode, |
196ee9cd | 507 | struct afs_read *req, |
56ff9c83 | 508 | bool async) |
1da177e4 | 509 | { |
08e0e7c8 | 510 | struct afs_call *call; |
1da177e4 LT |
511 | __be32 *bp; |
512 | ||
196ee9cd DH |
513 | if (upper_32_bits(req->pos) || |
514 | upper_32_bits(req->len) || | |
515 | upper_32_bits(req->pos + req->len)) | |
56ff9c83 | 516 | return afs_fs_fetch_data64(server, key, vnode, req, async); |
b9b1f8d5 | 517 | |
08e0e7c8 | 518 | _enter(""); |
1da177e4 | 519 | |
260a9803 | 520 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
521 | if (!call) |
522 | return -ENOMEM; | |
1da177e4 | 523 | |
00d3b7a4 | 524 | call->key = key; |
08e0e7c8 | 525 | call->reply = vnode; |
260a9803 | 526 | call->reply2 = NULL; /* volsync */ |
196ee9cd | 527 | call->reply3 = req; |
08e0e7c8 DH |
528 | call->service_id = FS_SERVICE; |
529 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 530 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
531 | |
532 | /* marshall the parameters */ | |
08e0e7c8 DH |
533 | bp = call->request; |
534 | bp[0] = htonl(FSFETCHDATA); | |
535 | bp[1] = htonl(vnode->fid.vid); | |
536 | bp[2] = htonl(vnode->fid.vnode); | |
537 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
538 | bp[4] = htonl(lower_32_bits(req->pos)); |
539 | bp[5] = htonl(lower_32_bits(req->len)); | |
1da177e4 | 540 | |
196ee9cd | 541 | atomic_inc(&req->usage); |
56ff9c83 | 542 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
08e0e7c8 | 543 | } |
1da177e4 | 544 | |
08e0e7c8 DH |
545 | /* |
546 | * deliver reply data to an FS.GiveUpCallBacks | |
547 | */ | |
d001648e | 548 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call) |
08e0e7c8 | 549 | { |
d001648e | 550 | _enter(""); |
1da177e4 | 551 | |
372ee163 | 552 | /* shouldn't be any reply data */ |
d001648e | 553 | return afs_extract_data(call, NULL, 0, false); |
ec26815a | 554 | } |
1da177e4 | 555 | |
1da177e4 | 556 | /* |
08e0e7c8 DH |
557 | * FS.GiveUpCallBacks operation type |
558 | */ | |
559 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 560 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
561 | .deliver = afs_deliver_fs_give_up_callbacks, |
562 | .abort_to_error = afs_abort_to_error, | |
563 | .destructor = afs_flat_call_destructor, | |
564 | }; | |
565 | ||
566 | /* | |
567 | * give up a set of callbacks | |
568 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 569 | */ |
08e0e7c8 | 570 | int afs_fs_give_up_callbacks(struct afs_server *server, |
56ff9c83 | 571 | bool async) |
1da177e4 | 572 | { |
08e0e7c8 DH |
573 | struct afs_call *call; |
574 | size_t ncallbacks; | |
575 | __be32 *bp, *tp; | |
576 | int loop; | |
1da177e4 | 577 | |
08e0e7c8 DH |
578 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
579 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 580 | |
08e0e7c8 | 581 | _enter("{%zu},", ncallbacks); |
1da177e4 | 582 | |
08e0e7c8 DH |
583 | if (ncallbacks == 0) |
584 | return 0; | |
585 | if (ncallbacks > AFSCBMAX) | |
586 | ncallbacks = AFSCBMAX; | |
1da177e4 | 587 | |
08e0e7c8 | 588 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 589 | |
08e0e7c8 DH |
590 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
591 | 12 + ncallbacks * 6 * 4, 0); | |
592 | if (!call) | |
593 | return -ENOMEM; | |
594 | ||
595 | call->service_id = FS_SERVICE; | |
596 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
597 | |
598 | /* marshall the parameters */ | |
08e0e7c8 DH |
599 | bp = call->request; |
600 | tp = bp + 2 + ncallbacks * 3; | |
601 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
602 | *bp++ = htonl(ncallbacks); | |
603 | *tp++ = htonl(ncallbacks); | |
604 | ||
605 | atomic_sub(ncallbacks, &server->cb_break_n); | |
606 | for (loop = ncallbacks; loop > 0; loop--) { | |
607 | struct afs_callback *cb = | |
608 | &server->cb_break[server->cb_break_tail]; | |
609 | ||
610 | *bp++ = htonl(cb->fid.vid); | |
611 | *bp++ = htonl(cb->fid.vnode); | |
612 | *bp++ = htonl(cb->fid.unique); | |
613 | *tp++ = htonl(cb->version); | |
614 | *tp++ = htonl(cb->expiry); | |
615 | *tp++ = htonl(cb->type); | |
616 | smp_mb(); | |
617 | server->cb_break_tail = | |
618 | (server->cb_break_tail + 1) & | |
619 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
620 | } |
621 | ||
08e0e7c8 DH |
622 | ASSERT(ncallbacks > 0); |
623 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 624 | |
56ff9c83 | 625 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
ec26815a | 626 | } |
260a9803 DH |
627 | |
628 | /* | |
629 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
630 | */ | |
d001648e | 631 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
260a9803 DH |
632 | { |
633 | struct afs_vnode *vnode = call->reply; | |
634 | const __be32 *bp; | |
372ee163 | 635 | int ret; |
260a9803 | 636 | |
d001648e | 637 | _enter("{%u}", call->unmarshall); |
260a9803 | 638 | |
d001648e | 639 | ret = afs_transfer_reply(call); |
372ee163 DH |
640 | if (ret < 0) |
641 | return ret; | |
260a9803 DH |
642 | |
643 | /* unmarshall the reply once we've received all of it */ | |
644 | bp = call->buffer; | |
645 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
646 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
647 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
648 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
649 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
650 | ||
651 | _leave(" = 0 [done]"); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | /* | |
656 | * FS.CreateFile and FS.MakeDir operation type | |
657 | */ | |
658 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
659 | .name = "FS.CreateXXXX", | |
660 | .deliver = afs_deliver_fs_create_vnode, | |
661 | .abort_to_error = afs_abort_to_error, | |
662 | .destructor = afs_flat_call_destructor, | |
663 | }; | |
664 | ||
665 | /* | |
666 | * create a file or make a directory | |
667 | */ | |
668 | int afs_fs_create(struct afs_server *server, | |
669 | struct key *key, | |
670 | struct afs_vnode *vnode, | |
671 | const char *name, | |
672 | umode_t mode, | |
673 | struct afs_fid *newfid, | |
674 | struct afs_file_status *newstatus, | |
675 | struct afs_callback *newcb, | |
56ff9c83 | 676 | bool async) |
260a9803 DH |
677 | { |
678 | struct afs_call *call; | |
679 | size_t namesz, reqsz, padsz; | |
680 | __be32 *bp; | |
681 | ||
682 | _enter(""); | |
683 | ||
684 | namesz = strlen(name); | |
685 | padsz = (4 - (namesz & 3)) & 3; | |
686 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
687 | ||
688 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
689 | (3 + 21 + 21 + 3 + 6) * 4); | |
690 | if (!call) | |
691 | return -ENOMEM; | |
692 | ||
693 | call->key = key; | |
694 | call->reply = vnode; | |
695 | call->reply2 = newfid; | |
696 | call->reply3 = newstatus; | |
697 | call->reply4 = newcb; | |
698 | call->service_id = FS_SERVICE; | |
699 | call->port = htons(AFS_FS_PORT); | |
700 | ||
701 | /* marshall the parameters */ | |
702 | bp = call->request; | |
703 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
704 | *bp++ = htonl(vnode->fid.vid); | |
705 | *bp++ = htonl(vnode->fid.vnode); | |
706 | *bp++ = htonl(vnode->fid.unique); | |
707 | *bp++ = htonl(namesz); | |
708 | memcpy(bp, name, namesz); | |
709 | bp = (void *) bp + namesz; | |
710 | if (padsz > 0) { | |
711 | memset(bp, 0, padsz); | |
712 | bp = (void *) bp + padsz; | |
713 | } | |
714 | *bp++ = htonl(AFS_SET_MODE); | |
715 | *bp++ = 0; /* mtime */ | |
716 | *bp++ = 0; /* owner */ | |
717 | *bp++ = 0; /* group */ | |
718 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
719 | *bp++ = 0; /* segment size */ | |
720 | ||
56ff9c83 | 721 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
722 | } |
723 | ||
724 | /* | |
725 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
726 | */ | |
d001648e | 727 | static int afs_deliver_fs_remove(struct afs_call *call) |
260a9803 DH |
728 | { |
729 | struct afs_vnode *vnode = call->reply; | |
730 | const __be32 *bp; | |
372ee163 | 731 | int ret; |
260a9803 | 732 | |
d001648e | 733 | _enter("{%u}", call->unmarshall); |
260a9803 | 734 | |
d001648e | 735 | ret = afs_transfer_reply(call); |
372ee163 DH |
736 | if (ret < 0) |
737 | return ret; | |
260a9803 DH |
738 | |
739 | /* unmarshall the reply once we've received all of it */ | |
740 | bp = call->buffer; | |
31143d5d | 741 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
742 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
743 | ||
744 | _leave(" = 0 [done]"); | |
745 | return 0; | |
746 | } | |
747 | ||
748 | /* | |
749 | * FS.RemoveDir/FS.RemoveFile operation type | |
750 | */ | |
751 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
752 | .name = "FS.RemoveXXXX", | |
753 | .deliver = afs_deliver_fs_remove, | |
754 | .abort_to_error = afs_abort_to_error, | |
755 | .destructor = afs_flat_call_destructor, | |
756 | }; | |
757 | ||
758 | /* | |
759 | * remove a file or directory | |
760 | */ | |
761 | int afs_fs_remove(struct afs_server *server, | |
762 | struct key *key, | |
763 | struct afs_vnode *vnode, | |
764 | const char *name, | |
765 | bool isdir, | |
56ff9c83 | 766 | bool async) |
260a9803 DH |
767 | { |
768 | struct afs_call *call; | |
769 | size_t namesz, reqsz, padsz; | |
770 | __be32 *bp; | |
771 | ||
772 | _enter(""); | |
773 | ||
774 | namesz = strlen(name); | |
775 | padsz = (4 - (namesz & 3)) & 3; | |
776 | reqsz = (5 * 4) + namesz + padsz; | |
777 | ||
778 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
779 | if (!call) | |
780 | return -ENOMEM; | |
781 | ||
782 | call->key = key; | |
783 | call->reply = vnode; | |
784 | call->service_id = FS_SERVICE; | |
785 | call->port = htons(AFS_FS_PORT); | |
786 | ||
787 | /* marshall the parameters */ | |
788 | bp = call->request; | |
789 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
790 | *bp++ = htonl(vnode->fid.vid); | |
791 | *bp++ = htonl(vnode->fid.vnode); | |
792 | *bp++ = htonl(vnode->fid.unique); | |
793 | *bp++ = htonl(namesz); | |
794 | memcpy(bp, name, namesz); | |
795 | bp = (void *) bp + namesz; | |
796 | if (padsz > 0) { | |
797 | memset(bp, 0, padsz); | |
798 | bp = (void *) bp + padsz; | |
799 | } | |
800 | ||
56ff9c83 | 801 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
802 | } |
803 | ||
804 | /* | |
805 | * deliver reply data to an FS.Link | |
806 | */ | |
d001648e | 807 | static int afs_deliver_fs_link(struct afs_call *call) |
260a9803 DH |
808 | { |
809 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
810 | const __be32 *bp; | |
372ee163 | 811 | int ret; |
260a9803 | 812 | |
d001648e | 813 | _enter("{%u}", call->unmarshall); |
260a9803 | 814 | |
d001648e | 815 | ret = afs_transfer_reply(call); |
372ee163 DH |
816 | if (ret < 0) |
817 | return ret; | |
260a9803 DH |
818 | |
819 | /* unmarshall the reply once we've received all of it */ | |
820 | bp = call->buffer; | |
31143d5d DH |
821 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
822 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
823 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
824 | ||
825 | _leave(" = 0 [done]"); | |
826 | return 0; | |
827 | } | |
828 | ||
829 | /* | |
830 | * FS.Link operation type | |
831 | */ | |
832 | static const struct afs_call_type afs_RXFSLink = { | |
833 | .name = "FS.Link", | |
834 | .deliver = afs_deliver_fs_link, | |
835 | .abort_to_error = afs_abort_to_error, | |
836 | .destructor = afs_flat_call_destructor, | |
837 | }; | |
838 | ||
839 | /* | |
840 | * make a hard link | |
841 | */ | |
842 | int afs_fs_link(struct afs_server *server, | |
843 | struct key *key, | |
844 | struct afs_vnode *dvnode, | |
845 | struct afs_vnode *vnode, | |
846 | const char *name, | |
56ff9c83 | 847 | bool async) |
260a9803 DH |
848 | { |
849 | struct afs_call *call; | |
850 | size_t namesz, reqsz, padsz; | |
851 | __be32 *bp; | |
852 | ||
853 | _enter(""); | |
854 | ||
855 | namesz = strlen(name); | |
856 | padsz = (4 - (namesz & 3)) & 3; | |
857 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
858 | ||
859 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
860 | if (!call) | |
861 | return -ENOMEM; | |
862 | ||
863 | call->key = key; | |
864 | call->reply = dvnode; | |
865 | call->reply2 = vnode; | |
866 | call->service_id = FS_SERVICE; | |
867 | call->port = htons(AFS_FS_PORT); | |
868 | ||
869 | /* marshall the parameters */ | |
870 | bp = call->request; | |
871 | *bp++ = htonl(FSLINK); | |
872 | *bp++ = htonl(dvnode->fid.vid); | |
873 | *bp++ = htonl(dvnode->fid.vnode); | |
874 | *bp++ = htonl(dvnode->fid.unique); | |
875 | *bp++ = htonl(namesz); | |
876 | memcpy(bp, name, namesz); | |
877 | bp = (void *) bp + namesz; | |
878 | if (padsz > 0) { | |
879 | memset(bp, 0, padsz); | |
880 | bp = (void *) bp + padsz; | |
881 | } | |
882 | *bp++ = htonl(vnode->fid.vid); | |
883 | *bp++ = htonl(vnode->fid.vnode); | |
884 | *bp++ = htonl(vnode->fid.unique); | |
885 | ||
56ff9c83 | 886 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
887 | } |
888 | ||
889 | /* | |
890 | * deliver reply data to an FS.Symlink | |
891 | */ | |
d001648e | 892 | static int afs_deliver_fs_symlink(struct afs_call *call) |
260a9803 DH |
893 | { |
894 | struct afs_vnode *vnode = call->reply; | |
895 | const __be32 *bp; | |
372ee163 | 896 | int ret; |
260a9803 | 897 | |
d001648e | 898 | _enter("{%u}", call->unmarshall); |
260a9803 | 899 | |
d001648e | 900 | ret = afs_transfer_reply(call); |
372ee163 DH |
901 | if (ret < 0) |
902 | return ret; | |
260a9803 DH |
903 | |
904 | /* unmarshall the reply once we've received all of it */ | |
905 | bp = call->buffer; | |
906 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
907 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
908 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
909 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
910 | ||
911 | _leave(" = 0 [done]"); | |
912 | return 0; | |
913 | } | |
914 | ||
915 | /* | |
916 | * FS.Symlink operation type | |
917 | */ | |
918 | static const struct afs_call_type afs_RXFSSymlink = { | |
919 | .name = "FS.Symlink", | |
920 | .deliver = afs_deliver_fs_symlink, | |
921 | .abort_to_error = afs_abort_to_error, | |
922 | .destructor = afs_flat_call_destructor, | |
923 | }; | |
924 | ||
925 | /* | |
926 | * create a symbolic link | |
927 | */ | |
928 | int afs_fs_symlink(struct afs_server *server, | |
929 | struct key *key, | |
930 | struct afs_vnode *vnode, | |
931 | const char *name, | |
932 | const char *contents, | |
933 | struct afs_fid *newfid, | |
934 | struct afs_file_status *newstatus, | |
56ff9c83 | 935 | bool async) |
260a9803 DH |
936 | { |
937 | struct afs_call *call; | |
938 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
939 | __be32 *bp; | |
940 | ||
941 | _enter(""); | |
942 | ||
943 | namesz = strlen(name); | |
944 | padsz = (4 - (namesz & 3)) & 3; | |
945 | ||
946 | c_namesz = strlen(contents); | |
947 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
948 | ||
949 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
950 | ||
951 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
952 | (3 + 21 + 21 + 6) * 4); | |
953 | if (!call) | |
954 | return -ENOMEM; | |
955 | ||
956 | call->key = key; | |
957 | call->reply = vnode; | |
958 | call->reply2 = newfid; | |
959 | call->reply3 = newstatus; | |
960 | call->service_id = FS_SERVICE; | |
961 | call->port = htons(AFS_FS_PORT); | |
962 | ||
963 | /* marshall the parameters */ | |
964 | bp = call->request; | |
965 | *bp++ = htonl(FSSYMLINK); | |
966 | *bp++ = htonl(vnode->fid.vid); | |
967 | *bp++ = htonl(vnode->fid.vnode); | |
968 | *bp++ = htonl(vnode->fid.unique); | |
969 | *bp++ = htonl(namesz); | |
970 | memcpy(bp, name, namesz); | |
971 | bp = (void *) bp + namesz; | |
972 | if (padsz > 0) { | |
973 | memset(bp, 0, padsz); | |
974 | bp = (void *) bp + padsz; | |
975 | } | |
976 | *bp++ = htonl(c_namesz); | |
977 | memcpy(bp, contents, c_namesz); | |
978 | bp = (void *) bp + c_namesz; | |
979 | if (c_padsz > 0) { | |
980 | memset(bp, 0, c_padsz); | |
981 | bp = (void *) bp + c_padsz; | |
982 | } | |
983 | *bp++ = htonl(AFS_SET_MODE); | |
984 | *bp++ = 0; /* mtime */ | |
985 | *bp++ = 0; /* owner */ | |
986 | *bp++ = 0; /* group */ | |
987 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
988 | *bp++ = 0; /* segment size */ | |
989 | ||
56ff9c83 | 990 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
991 | } |
992 | ||
993 | /* | |
994 | * deliver reply data to an FS.Rename | |
995 | */ | |
d001648e | 996 | static int afs_deliver_fs_rename(struct afs_call *call) |
260a9803 DH |
997 | { |
998 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
999 | const __be32 *bp; | |
372ee163 | 1000 | int ret; |
260a9803 | 1001 | |
d001648e | 1002 | _enter("{%u}", call->unmarshall); |
260a9803 | 1003 | |
d001648e | 1004 | ret = afs_transfer_reply(call); |
372ee163 DH |
1005 | if (ret < 0) |
1006 | return ret; | |
260a9803 DH |
1007 | |
1008 | /* unmarshall the reply once we've received all of it */ | |
1009 | bp = call->buffer; | |
31143d5d | 1010 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 1011 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
1012 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
1013 | NULL); | |
260a9803 DH |
1014 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
1015 | ||
1016 | _leave(" = 0 [done]"); | |
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | /* | |
1021 | * FS.Rename operation type | |
1022 | */ | |
1023 | static const struct afs_call_type afs_RXFSRename = { | |
1024 | .name = "FS.Rename", | |
1025 | .deliver = afs_deliver_fs_rename, | |
1026 | .abort_to_error = afs_abort_to_error, | |
1027 | .destructor = afs_flat_call_destructor, | |
1028 | }; | |
1029 | ||
1030 | /* | |
1031 | * create a symbolic link | |
1032 | */ | |
1033 | int afs_fs_rename(struct afs_server *server, | |
1034 | struct key *key, | |
1035 | struct afs_vnode *orig_dvnode, | |
1036 | const char *orig_name, | |
1037 | struct afs_vnode *new_dvnode, | |
1038 | const char *new_name, | |
56ff9c83 | 1039 | bool async) |
260a9803 DH |
1040 | { |
1041 | struct afs_call *call; | |
1042 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1043 | __be32 *bp; | |
1044 | ||
1045 | _enter(""); | |
1046 | ||
1047 | o_namesz = strlen(orig_name); | |
1048 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1049 | ||
1050 | n_namesz = strlen(new_name); | |
1051 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1052 | ||
1053 | reqsz = (4 * 4) + | |
1054 | 4 + o_namesz + o_padsz + | |
1055 | (3 * 4) + | |
1056 | 4 + n_namesz + n_padsz; | |
1057 | ||
1058 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1059 | if (!call) | |
1060 | return -ENOMEM; | |
1061 | ||
1062 | call->key = key; | |
1063 | call->reply = orig_dvnode; | |
1064 | call->reply2 = new_dvnode; | |
1065 | call->service_id = FS_SERVICE; | |
1066 | call->port = htons(AFS_FS_PORT); | |
1067 | ||
1068 | /* marshall the parameters */ | |
1069 | bp = call->request; | |
1070 | *bp++ = htonl(FSRENAME); | |
1071 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1072 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1073 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1074 | *bp++ = htonl(o_namesz); | |
1075 | memcpy(bp, orig_name, o_namesz); | |
1076 | bp = (void *) bp + o_namesz; | |
1077 | if (o_padsz > 0) { | |
1078 | memset(bp, 0, o_padsz); | |
1079 | bp = (void *) bp + o_padsz; | |
1080 | } | |
1081 | ||
1082 | *bp++ = htonl(new_dvnode->fid.vid); | |
1083 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1084 | *bp++ = htonl(new_dvnode->fid.unique); | |
1085 | *bp++ = htonl(n_namesz); | |
1086 | memcpy(bp, new_name, n_namesz); | |
1087 | bp = (void *) bp + n_namesz; | |
1088 | if (n_padsz > 0) { | |
1089 | memset(bp, 0, n_padsz); | |
1090 | bp = (void *) bp + n_padsz; | |
1091 | } | |
1092 | ||
56ff9c83 | 1093 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 | 1094 | } |
31143d5d DH |
1095 | |
1096 | /* | |
1097 | * deliver reply data to an FS.StoreData | |
1098 | */ | |
d001648e | 1099 | static int afs_deliver_fs_store_data(struct afs_call *call) |
31143d5d DH |
1100 | { |
1101 | struct afs_vnode *vnode = call->reply; | |
1102 | const __be32 *bp; | |
372ee163 | 1103 | int ret; |
31143d5d | 1104 | |
d001648e | 1105 | _enter(""); |
31143d5d | 1106 | |
d001648e | 1107 | ret = afs_transfer_reply(call); |
372ee163 DH |
1108 | if (ret < 0) |
1109 | return ret; | |
31143d5d DH |
1110 | |
1111 | /* unmarshall the reply once we've received all of it */ | |
1112 | bp = call->buffer; | |
1113 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1114 | &call->store_version); | |
1115 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1116 | ||
1117 | afs_pages_written_back(vnode, call); | |
1118 | ||
1119 | _leave(" = 0 [done]"); | |
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | * FS.StoreData operation type | |
1125 | */ | |
1126 | static const struct afs_call_type afs_RXFSStoreData = { | |
1127 | .name = "FS.StoreData", | |
1128 | .deliver = afs_deliver_fs_store_data, | |
1129 | .abort_to_error = afs_abort_to_error, | |
1130 | .destructor = afs_flat_call_destructor, | |
1131 | }; | |
1132 | ||
b9b1f8d5 DH |
1133 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1134 | .name = "FS.StoreData64", | |
1135 | .deliver = afs_deliver_fs_store_data, | |
1136 | .abort_to_error = afs_abort_to_error, | |
1137 | .destructor = afs_flat_call_destructor, | |
1138 | }; | |
1139 | ||
1140 | /* | |
1141 | * store a set of pages to a very large file | |
1142 | */ | |
1143 | static int afs_fs_store_data64(struct afs_server *server, | |
1144 | struct afs_writeback *wb, | |
1145 | pgoff_t first, pgoff_t last, | |
1146 | unsigned offset, unsigned to, | |
1147 | loff_t size, loff_t pos, loff_t i_size, | |
56ff9c83 | 1148 | bool async) |
b9b1f8d5 DH |
1149 | { |
1150 | struct afs_vnode *vnode = wb->vnode; | |
1151 | struct afs_call *call; | |
1152 | __be32 *bp; | |
1153 | ||
1154 | _enter(",%x,{%x:%u},,", | |
1155 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1156 | ||
1157 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1158 | (4 + 6 + 3 * 2) * 4, | |
1159 | (21 + 6) * 4); | |
1160 | if (!call) | |
1161 | return -ENOMEM; | |
1162 | ||
1163 | call->wb = wb; | |
1164 | call->key = wb->key; | |
1165 | call->reply = vnode; | |
1166 | call->service_id = FS_SERVICE; | |
1167 | call->port = htons(AFS_FS_PORT); | |
1168 | call->mapping = vnode->vfs_inode.i_mapping; | |
1169 | call->first = first; | |
1170 | call->last = last; | |
1171 | call->first_offset = offset; | |
1172 | call->last_to = to; | |
1173 | call->send_pages = true; | |
1174 | call->store_version = vnode->status.data_version + 1; | |
1175 | ||
1176 | /* marshall the parameters */ | |
1177 | bp = call->request; | |
1178 | *bp++ = htonl(FSSTOREDATA64); | |
1179 | *bp++ = htonl(vnode->fid.vid); | |
1180 | *bp++ = htonl(vnode->fid.vnode); | |
1181 | *bp++ = htonl(vnode->fid.unique); | |
1182 | ||
1183 | *bp++ = 0; /* mask */ | |
1184 | *bp++ = 0; /* mtime */ | |
1185 | *bp++ = 0; /* owner */ | |
1186 | *bp++ = 0; /* group */ | |
1187 | *bp++ = 0; /* unix mode */ | |
1188 | *bp++ = 0; /* segment size */ | |
1189 | ||
1190 | *bp++ = htonl(pos >> 32); | |
1191 | *bp++ = htonl((u32) pos); | |
1192 | *bp++ = htonl(size >> 32); | |
1193 | *bp++ = htonl((u32) size); | |
1194 | *bp++ = htonl(i_size >> 32); | |
1195 | *bp++ = htonl((u32) i_size); | |
1196 | ||
56ff9c83 | 1197 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
1198 | } |
1199 | ||
31143d5d DH |
1200 | /* |
1201 | * store a set of pages | |
1202 | */ | |
1203 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1204 | pgoff_t first, pgoff_t last, | |
1205 | unsigned offset, unsigned to, | |
56ff9c83 | 1206 | bool async) |
31143d5d DH |
1207 | { |
1208 | struct afs_vnode *vnode = wb->vnode; | |
1209 | struct afs_call *call; | |
1210 | loff_t size, pos, i_size; | |
1211 | __be32 *bp; | |
1212 | ||
1213 | _enter(",%x,{%x:%u},,", | |
1214 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1215 | ||
1216 | size = to - offset; | |
1217 | if (first != last) | |
1218 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1219 | pos = (loff_t)first << PAGE_SHIFT; | |
1220 | pos += offset; | |
1221 | ||
1222 | i_size = i_size_read(&vnode->vfs_inode); | |
1223 | if (pos + size > i_size) | |
1224 | i_size = size + pos; | |
1225 | ||
1226 | _debug("size %llx, at %llx, i_size %llx", | |
1227 | (unsigned long long) size, (unsigned long long) pos, | |
1228 | (unsigned long long) i_size); | |
1229 | ||
b9b1f8d5 DH |
1230 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1231 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
56ff9c83 | 1232 | size, pos, i_size, async); |
31143d5d DH |
1233 | |
1234 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1235 | (4 + 6 + 3) * 4, | |
1236 | (21 + 6) * 4); | |
1237 | if (!call) | |
1238 | return -ENOMEM; | |
1239 | ||
1240 | call->wb = wb; | |
1241 | call->key = wb->key; | |
1242 | call->reply = vnode; | |
1243 | call->service_id = FS_SERVICE; | |
1244 | call->port = htons(AFS_FS_PORT); | |
1245 | call->mapping = vnode->vfs_inode.i_mapping; | |
1246 | call->first = first; | |
1247 | call->last = last; | |
1248 | call->first_offset = offset; | |
1249 | call->last_to = to; | |
1250 | call->send_pages = true; | |
1251 | call->store_version = vnode->status.data_version + 1; | |
1252 | ||
1253 | /* marshall the parameters */ | |
1254 | bp = call->request; | |
1255 | *bp++ = htonl(FSSTOREDATA); | |
1256 | *bp++ = htonl(vnode->fid.vid); | |
1257 | *bp++ = htonl(vnode->fid.vnode); | |
1258 | *bp++ = htonl(vnode->fid.unique); | |
1259 | ||
1260 | *bp++ = 0; /* mask */ | |
1261 | *bp++ = 0; /* mtime */ | |
1262 | *bp++ = 0; /* owner */ | |
1263 | *bp++ = 0; /* group */ | |
1264 | *bp++ = 0; /* unix mode */ | |
1265 | *bp++ = 0; /* segment size */ | |
1266 | ||
1267 | *bp++ = htonl(pos); | |
1268 | *bp++ = htonl(size); | |
1269 | *bp++ = htonl(i_size); | |
1270 | ||
56ff9c83 | 1271 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d DH |
1272 | } |
1273 | ||
1274 | /* | |
1275 | * deliver reply data to an FS.StoreStatus | |
1276 | */ | |
d001648e | 1277 | static int afs_deliver_fs_store_status(struct afs_call *call) |
31143d5d DH |
1278 | { |
1279 | afs_dataversion_t *store_version; | |
1280 | struct afs_vnode *vnode = call->reply; | |
1281 | const __be32 *bp; | |
372ee163 | 1282 | int ret; |
31143d5d | 1283 | |
d001648e | 1284 | _enter(""); |
31143d5d | 1285 | |
d001648e | 1286 | ret = afs_transfer_reply(call); |
372ee163 DH |
1287 | if (ret < 0) |
1288 | return ret; | |
31143d5d DH |
1289 | |
1290 | /* unmarshall the reply once we've received all of it */ | |
1291 | store_version = NULL; | |
1292 | if (call->operation_ID == FSSTOREDATA) | |
1293 | store_version = &call->store_version; | |
1294 | ||
1295 | bp = call->buffer; | |
1296 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1297 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1298 | ||
1299 | _leave(" = 0 [done]"); | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * FS.StoreStatus operation type | |
1305 | */ | |
1306 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1307 | .name = "FS.StoreStatus", | |
1308 | .deliver = afs_deliver_fs_store_status, | |
1309 | .abort_to_error = afs_abort_to_error, | |
1310 | .destructor = afs_flat_call_destructor, | |
1311 | }; | |
1312 | ||
1313 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1314 | .name = "FS.StoreData", | |
1315 | .deliver = afs_deliver_fs_store_status, | |
1316 | .abort_to_error = afs_abort_to_error, | |
1317 | .destructor = afs_flat_call_destructor, | |
1318 | }; | |
1319 | ||
b9b1f8d5 DH |
1320 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1321 | .name = "FS.StoreData64", | |
1322 | .deliver = afs_deliver_fs_store_status, | |
1323 | .abort_to_error = afs_abort_to_error, | |
1324 | .destructor = afs_flat_call_destructor, | |
1325 | }; | |
1326 | ||
1327 | /* | |
1328 | * set the attributes on a very large file, using FS.StoreData rather than | |
1329 | * FS.StoreStatus so as to alter the file size also | |
1330 | */ | |
1331 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1332 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1333 | bool async) |
b9b1f8d5 DH |
1334 | { |
1335 | struct afs_call *call; | |
1336 | __be32 *bp; | |
1337 | ||
1338 | _enter(",%x,{%x:%u},,", | |
1339 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1340 | ||
1341 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1342 | ||
1343 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1344 | (4 + 6 + 3 * 2) * 4, | |
1345 | (21 + 6) * 4); | |
1346 | if (!call) | |
1347 | return -ENOMEM; | |
1348 | ||
1349 | call->key = key; | |
1350 | call->reply = vnode; | |
1351 | call->service_id = FS_SERVICE; | |
1352 | call->port = htons(AFS_FS_PORT); | |
1353 | call->store_version = vnode->status.data_version + 1; | |
1354 | call->operation_ID = FSSTOREDATA; | |
1355 | ||
1356 | /* marshall the parameters */ | |
1357 | bp = call->request; | |
1358 | *bp++ = htonl(FSSTOREDATA64); | |
1359 | *bp++ = htonl(vnode->fid.vid); | |
1360 | *bp++ = htonl(vnode->fid.vnode); | |
1361 | *bp++ = htonl(vnode->fid.unique); | |
1362 | ||
1363 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1364 | ||
1365 | *bp++ = 0; /* position of start of write */ | |
1366 | *bp++ = 0; | |
1367 | *bp++ = 0; /* size of write */ | |
1368 | *bp++ = 0; | |
1369 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1370 | *bp++ = htonl((u32) attr->ia_size); | |
1371 | ||
56ff9c83 | 1372 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
1373 | } |
1374 | ||
31143d5d DH |
1375 | /* |
1376 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1377 | * so as to alter the file size also | |
1378 | */ | |
1379 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1380 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1381 | bool async) |
31143d5d DH |
1382 | { |
1383 | struct afs_call *call; | |
1384 | __be32 *bp; | |
1385 | ||
1386 | _enter(",%x,{%x:%u},,", | |
1387 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1388 | ||
1389 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1390 | if (attr->ia_size >> 32) |
1391 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
56ff9c83 | 1392 | async); |
31143d5d DH |
1393 | |
1394 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1395 | (4 + 6 + 3) * 4, | |
1396 | (21 + 6) * 4); | |
1397 | if (!call) | |
1398 | return -ENOMEM; | |
1399 | ||
1400 | call->key = key; | |
1401 | call->reply = vnode; | |
1402 | call->service_id = FS_SERVICE; | |
1403 | call->port = htons(AFS_FS_PORT); | |
1404 | call->store_version = vnode->status.data_version + 1; | |
1405 | call->operation_ID = FSSTOREDATA; | |
1406 | ||
1407 | /* marshall the parameters */ | |
1408 | bp = call->request; | |
1409 | *bp++ = htonl(FSSTOREDATA); | |
1410 | *bp++ = htonl(vnode->fid.vid); | |
1411 | *bp++ = htonl(vnode->fid.vnode); | |
1412 | *bp++ = htonl(vnode->fid.unique); | |
1413 | ||
1414 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1415 | ||
1416 | *bp++ = 0; /* position of start of write */ | |
1417 | *bp++ = 0; /* size of write */ | |
1418 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1419 | ||
56ff9c83 | 1420 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d DH |
1421 | } |
1422 | ||
1423 | /* | |
1424 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1425 | * size, and FS.StoreStatus otherwise | |
1426 | */ | |
1427 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1428 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1429 | bool async) |
31143d5d DH |
1430 | { |
1431 | struct afs_call *call; | |
1432 | __be32 *bp; | |
1433 | ||
1434 | if (attr->ia_valid & ATTR_SIZE) | |
1435 | return afs_fs_setattr_size(server, key, vnode, attr, | |
56ff9c83 | 1436 | async); |
31143d5d DH |
1437 | |
1438 | _enter(",%x,{%x:%u},,", | |
1439 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1440 | ||
1441 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1442 | (4 + 6) * 4, | |
1443 | (21 + 6) * 4); | |
1444 | if (!call) | |
1445 | return -ENOMEM; | |
1446 | ||
1447 | call->key = key; | |
1448 | call->reply = vnode; | |
1449 | call->service_id = FS_SERVICE; | |
1450 | call->port = htons(AFS_FS_PORT); | |
1451 | call->operation_ID = FSSTORESTATUS; | |
1452 | ||
1453 | /* marshall the parameters */ | |
1454 | bp = call->request; | |
1455 | *bp++ = htonl(FSSTORESTATUS); | |
1456 | *bp++ = htonl(vnode->fid.vid); | |
1457 | *bp++ = htonl(vnode->fid.vnode); | |
1458 | *bp++ = htonl(vnode->fid.unique); | |
1459 | ||
1460 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1461 | ||
56ff9c83 | 1462 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d | 1463 | } |
45222b9e DH |
1464 | |
1465 | /* | |
1466 | * deliver reply data to an FS.GetVolumeStatus | |
1467 | */ | |
d001648e | 1468 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
45222b9e DH |
1469 | { |
1470 | const __be32 *bp; | |
1471 | char *p; | |
1472 | int ret; | |
1473 | ||
d001648e | 1474 | _enter("{%u}", call->unmarshall); |
45222b9e DH |
1475 | |
1476 | switch (call->unmarshall) { | |
1477 | case 0: | |
1478 | call->offset = 0; | |
1479 | call->unmarshall++; | |
1480 | ||
1481 | /* extract the returned status record */ | |
1482 | case 1: | |
1483 | _debug("extract status"); | |
d001648e DH |
1484 | ret = afs_extract_data(call, call->buffer, |
1485 | 12 * 4, true); | |
372ee163 DH |
1486 | if (ret < 0) |
1487 | return ret; | |
45222b9e DH |
1488 | |
1489 | bp = call->buffer; | |
1490 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); | |
1491 | call->offset = 0; | |
1492 | call->unmarshall++; | |
1493 | ||
1494 | /* extract the volume name length */ | |
1495 | case 2: | |
d001648e | 1496 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1497 | if (ret < 0) |
1498 | return ret; | |
45222b9e DH |
1499 | |
1500 | call->count = ntohl(call->tmp); | |
1501 | _debug("volname length: %u", call->count); | |
1502 | if (call->count >= AFSNAMEMAX) | |
1503 | return -EBADMSG; | |
1504 | call->offset = 0; | |
1505 | call->unmarshall++; | |
1506 | ||
1507 | /* extract the volume name */ | |
1508 | case 3: | |
1509 | _debug("extract volname"); | |
1510 | if (call->count > 0) { | |
d001648e DH |
1511 | ret = afs_extract_data(call, call->reply3, |
1512 | call->count, true); | |
372ee163 DH |
1513 | if (ret < 0) |
1514 | return ret; | |
45222b9e DH |
1515 | } |
1516 | ||
1517 | p = call->reply3; | |
1518 | p[call->count] = 0; | |
1519 | _debug("volname '%s'", p); | |
1520 | ||
1521 | call->offset = 0; | |
1522 | call->unmarshall++; | |
1523 | ||
1524 | /* extract the volume name padding */ | |
1525 | if ((call->count & 3) == 0) { | |
1526 | call->unmarshall++; | |
1527 | goto no_volname_padding; | |
1528 | } | |
1529 | call->count = 4 - (call->count & 3); | |
1530 | ||
1531 | case 4: | |
d001648e DH |
1532 | ret = afs_extract_data(call, call->buffer, |
1533 | call->count, true); | |
372ee163 DH |
1534 | if (ret < 0) |
1535 | return ret; | |
45222b9e DH |
1536 | |
1537 | call->offset = 0; | |
1538 | call->unmarshall++; | |
1539 | no_volname_padding: | |
1540 | ||
1541 | /* extract the offline message length */ | |
1542 | case 5: | |
d001648e | 1543 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1544 | if (ret < 0) |
1545 | return ret; | |
45222b9e DH |
1546 | |
1547 | call->count = ntohl(call->tmp); | |
1548 | _debug("offline msg length: %u", call->count); | |
1549 | if (call->count >= AFSNAMEMAX) | |
1550 | return -EBADMSG; | |
1551 | call->offset = 0; | |
1552 | call->unmarshall++; | |
1553 | ||
1554 | /* extract the offline message */ | |
1555 | case 6: | |
1556 | _debug("extract offline"); | |
1557 | if (call->count > 0) { | |
d001648e DH |
1558 | ret = afs_extract_data(call, call->reply3, |
1559 | call->count, true); | |
372ee163 DH |
1560 | if (ret < 0) |
1561 | return ret; | |
45222b9e DH |
1562 | } |
1563 | ||
1564 | p = call->reply3; | |
1565 | p[call->count] = 0; | |
1566 | _debug("offline '%s'", p); | |
1567 | ||
1568 | call->offset = 0; | |
1569 | call->unmarshall++; | |
1570 | ||
1571 | /* extract the offline message padding */ | |
1572 | if ((call->count & 3) == 0) { | |
1573 | call->unmarshall++; | |
1574 | goto no_offline_padding; | |
1575 | } | |
1576 | call->count = 4 - (call->count & 3); | |
1577 | ||
1578 | case 7: | |
d001648e DH |
1579 | ret = afs_extract_data(call, call->buffer, |
1580 | call->count, true); | |
372ee163 DH |
1581 | if (ret < 0) |
1582 | return ret; | |
45222b9e DH |
1583 | |
1584 | call->offset = 0; | |
1585 | call->unmarshall++; | |
1586 | no_offline_padding: | |
1587 | ||
1588 | /* extract the message of the day length */ | |
1589 | case 8: | |
d001648e | 1590 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1591 | if (ret < 0) |
1592 | return ret; | |
45222b9e DH |
1593 | |
1594 | call->count = ntohl(call->tmp); | |
1595 | _debug("motd length: %u", call->count); | |
1596 | if (call->count >= AFSNAMEMAX) | |
1597 | return -EBADMSG; | |
1598 | call->offset = 0; | |
1599 | call->unmarshall++; | |
1600 | ||
1601 | /* extract the message of the day */ | |
1602 | case 9: | |
1603 | _debug("extract motd"); | |
1604 | if (call->count > 0) { | |
d001648e DH |
1605 | ret = afs_extract_data(call, call->reply3, |
1606 | call->count, true); | |
372ee163 DH |
1607 | if (ret < 0) |
1608 | return ret; | |
45222b9e DH |
1609 | } |
1610 | ||
1611 | p = call->reply3; | |
1612 | p[call->count] = 0; | |
1613 | _debug("motd '%s'", p); | |
1614 | ||
1615 | call->offset = 0; | |
1616 | call->unmarshall++; | |
1617 | ||
1618 | /* extract the message of the day padding */ | |
d001648e | 1619 | call->count = (4 - (call->count & 3)) & 3; |
45222b9e DH |
1620 | |
1621 | case 10: | |
d001648e DH |
1622 | ret = afs_extract_data(call, call->buffer, |
1623 | call->count, false); | |
372ee163 DH |
1624 | if (ret < 0) |
1625 | return ret; | |
45222b9e DH |
1626 | |
1627 | call->offset = 0; | |
1628 | call->unmarshall++; | |
45222b9e | 1629 | case 11: |
45222b9e DH |
1630 | break; |
1631 | } | |
1632 | ||
45222b9e DH |
1633 | _leave(" = 0 [done]"); |
1634 | return 0; | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * destroy an FS.GetVolumeStatus call | |
1639 | */ | |
1640 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1641 | { | |
1642 | kfree(call->reply3); | |
1643 | call->reply3 = NULL; | |
1644 | afs_flat_call_destructor(call); | |
1645 | } | |
1646 | ||
1647 | /* | |
1648 | * FS.GetVolumeStatus operation type | |
1649 | */ | |
1650 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1651 | .name = "FS.GetVolumeStatus", | |
1652 | .deliver = afs_deliver_fs_get_volume_status, | |
1653 | .abort_to_error = afs_abort_to_error, | |
1654 | .destructor = afs_get_volume_status_call_destructor, | |
1655 | }; | |
1656 | ||
1657 | /* | |
1658 | * fetch the status of a volume | |
1659 | */ | |
1660 | int afs_fs_get_volume_status(struct afs_server *server, | |
1661 | struct key *key, | |
1662 | struct afs_vnode *vnode, | |
1663 | struct afs_volume_status *vs, | |
56ff9c83 | 1664 | bool async) |
45222b9e DH |
1665 | { |
1666 | struct afs_call *call; | |
1667 | __be32 *bp; | |
1668 | void *tmpbuf; | |
1669 | ||
1670 | _enter(""); | |
1671 | ||
1672 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1673 | if (!tmpbuf) | |
1674 | return -ENOMEM; | |
1675 | ||
1676 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); | |
1677 | if (!call) { | |
1678 | kfree(tmpbuf); | |
1679 | return -ENOMEM; | |
1680 | } | |
1681 | ||
1682 | call->key = key; | |
1683 | call->reply = vnode; | |
1684 | call->reply2 = vs; | |
1685 | call->reply3 = tmpbuf; | |
1686 | call->service_id = FS_SERVICE; | |
1687 | call->port = htons(AFS_FS_PORT); | |
1688 | ||
1689 | /* marshall the parameters */ | |
1690 | bp = call->request; | |
1691 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1692 | bp[1] = htonl(vnode->fid.vid); | |
1693 | ||
56ff9c83 | 1694 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
45222b9e | 1695 | } |
e8d6c554 DH |
1696 | |
1697 | /* | |
1698 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1699 | */ | |
d001648e | 1700 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
e8d6c554 DH |
1701 | { |
1702 | const __be32 *bp; | |
372ee163 | 1703 | int ret; |
e8d6c554 | 1704 | |
d001648e | 1705 | _enter("{%u}", call->unmarshall); |
e8d6c554 | 1706 | |
d001648e | 1707 | ret = afs_transfer_reply(call); |
372ee163 DH |
1708 | if (ret < 0) |
1709 | return ret; | |
e8d6c554 DH |
1710 | |
1711 | /* unmarshall the reply once we've received all of it */ | |
1712 | bp = call->buffer; | |
1713 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1714 | ||
1715 | _leave(" = 0 [done]"); | |
1716 | return 0; | |
1717 | } | |
1718 | ||
1719 | /* | |
1720 | * FS.SetLock operation type | |
1721 | */ | |
1722 | static const struct afs_call_type afs_RXFSSetLock = { | |
1723 | .name = "FS.SetLock", | |
1724 | .deliver = afs_deliver_fs_xxxx_lock, | |
1725 | .abort_to_error = afs_abort_to_error, | |
1726 | .destructor = afs_flat_call_destructor, | |
1727 | }; | |
1728 | ||
1729 | /* | |
1730 | * FS.ExtendLock operation type | |
1731 | */ | |
1732 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1733 | .name = "FS.ExtendLock", | |
1734 | .deliver = afs_deliver_fs_xxxx_lock, | |
1735 | .abort_to_error = afs_abort_to_error, | |
1736 | .destructor = afs_flat_call_destructor, | |
1737 | }; | |
1738 | ||
1739 | /* | |
1740 | * FS.ReleaseLock operation type | |
1741 | */ | |
1742 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1743 | .name = "FS.ReleaseLock", | |
1744 | .deliver = afs_deliver_fs_xxxx_lock, | |
1745 | .abort_to_error = afs_abort_to_error, | |
1746 | .destructor = afs_flat_call_destructor, | |
1747 | }; | |
1748 | ||
1749 | /* | |
1750 | * get a lock on a file | |
1751 | */ | |
1752 | int afs_fs_set_lock(struct afs_server *server, | |
1753 | struct key *key, | |
1754 | struct afs_vnode *vnode, | |
1755 | afs_lock_type_t type, | |
56ff9c83 | 1756 | bool async) |
e8d6c554 DH |
1757 | { |
1758 | struct afs_call *call; | |
1759 | __be32 *bp; | |
1760 | ||
1761 | _enter(""); | |
1762 | ||
1763 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); | |
1764 | if (!call) | |
1765 | return -ENOMEM; | |
1766 | ||
1767 | call->key = key; | |
1768 | call->reply = vnode; | |
1769 | call->service_id = FS_SERVICE; | |
1770 | call->port = htons(AFS_FS_PORT); | |
1771 | ||
1772 | /* marshall the parameters */ | |
1773 | bp = call->request; | |
1774 | *bp++ = htonl(FSSETLOCK); | |
1775 | *bp++ = htonl(vnode->fid.vid); | |
1776 | *bp++ = htonl(vnode->fid.vnode); | |
1777 | *bp++ = htonl(vnode->fid.unique); | |
1778 | *bp++ = htonl(type); | |
1779 | ||
56ff9c83 | 1780 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 DH |
1781 | } |
1782 | ||
1783 | /* | |
1784 | * extend a lock on a file | |
1785 | */ | |
1786 | int afs_fs_extend_lock(struct afs_server *server, | |
1787 | struct key *key, | |
1788 | struct afs_vnode *vnode, | |
56ff9c83 | 1789 | bool async) |
e8d6c554 DH |
1790 | { |
1791 | struct afs_call *call; | |
1792 | __be32 *bp; | |
1793 | ||
1794 | _enter(""); | |
1795 | ||
1796 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); | |
1797 | if (!call) | |
1798 | return -ENOMEM; | |
1799 | ||
1800 | call->key = key; | |
1801 | call->reply = vnode; | |
1802 | call->service_id = FS_SERVICE; | |
1803 | call->port = htons(AFS_FS_PORT); | |
1804 | ||
1805 | /* marshall the parameters */ | |
1806 | bp = call->request; | |
1807 | *bp++ = htonl(FSEXTENDLOCK); | |
1808 | *bp++ = htonl(vnode->fid.vid); | |
1809 | *bp++ = htonl(vnode->fid.vnode); | |
1810 | *bp++ = htonl(vnode->fid.unique); | |
1811 | ||
56ff9c83 | 1812 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 DH |
1813 | } |
1814 | ||
1815 | /* | |
1816 | * release a lock on a file | |
1817 | */ | |
1818 | int afs_fs_release_lock(struct afs_server *server, | |
1819 | struct key *key, | |
1820 | struct afs_vnode *vnode, | |
56ff9c83 | 1821 | bool async) |
e8d6c554 DH |
1822 | { |
1823 | struct afs_call *call; | |
1824 | __be32 *bp; | |
1825 | ||
1826 | _enter(""); | |
1827 | ||
1828 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); | |
1829 | if (!call) | |
1830 | return -ENOMEM; | |
1831 | ||
1832 | call->key = key; | |
1833 | call->reply = vnode; | |
1834 | call->service_id = FS_SERVICE; | |
1835 | call->port = htons(AFS_FS_PORT); | |
1836 | ||
1837 | /* marshall the parameters */ | |
1838 | bp = call->request; | |
1839 | *bp++ = htonl(FSRELEASELOCK); | |
1840 | *bp++ = htonl(vnode->fid.vid); | |
1841 | *bp++ = htonl(vnode->fid.vnode); | |
1842 | *bp++ = htonl(vnode->fid.unique); | |
1843 | ||
56ff9c83 | 1844 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 | 1845 | } |