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> | |
13 | #include <linux/sched.h> | |
08e0e7c8 | 14 | #include <linux/circ_buf.h> |
1da177e4 | 15 | #include "internal.h" |
08e0e7c8 | 16 | #include "afs_fs.h" |
1da177e4 | 17 | |
260a9803 DH |
18 | /* |
19 | * decode an AFSFid block | |
20 | */ | |
21 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
22 | { | |
23 | const __be32 *bp = *_bp; | |
24 | ||
25 | fid->vid = ntohl(*bp++); | |
26 | fid->vnode = ntohl(*bp++); | |
27 | fid->unique = ntohl(*bp++); | |
28 | *_bp = bp; | |
29 | } | |
30 | ||
1da177e4 | 31 | /* |
08e0e7c8 | 32 | * decode an AFSFetchStatus block |
1da177e4 | 33 | */ |
08e0e7c8 | 34 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 35 | struct afs_file_status *status, |
31143d5d DH |
36 | struct afs_vnode *vnode, |
37 | afs_dataversion_t *store_version) | |
1da177e4 | 38 | { |
31143d5d | 39 | afs_dataversion_t expected_version; |
08e0e7c8 DH |
40 | const __be32 *bp = *_bp; |
41 | umode_t mode; | |
260a9803 | 42 | u64 data_version, size; |
08e0e7c8 DH |
43 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
44 | ||
45 | #define EXTRACT(DST) \ | |
46 | do { \ | |
47 | u32 x = ntohl(*bp++); \ | |
48 | changed |= DST - x; \ | |
49 | DST = x; \ | |
50 | } while (0) | |
51 | ||
260a9803 DH |
52 | status->if_version = ntohl(*bp++); |
53 | EXTRACT(status->type); | |
54 | EXTRACT(status->nlink); | |
55 | size = ntohl(*bp++); | |
08e0e7c8 | 56 | data_version = ntohl(*bp++); |
260a9803 DH |
57 | EXTRACT(status->author); |
58 | EXTRACT(status->owner); | |
59 | EXTRACT(status->caller_access); /* call ticket dependent */ | |
60 | EXTRACT(status->anon_access); | |
61 | EXTRACT(status->mode); | |
62 | EXTRACT(status->parent.vnode); | |
63 | EXTRACT(status->parent.unique); | |
08e0e7c8 | 64 | bp++; /* seg size */ |
260a9803 DH |
65 | status->mtime_client = ntohl(*bp++); |
66 | status->mtime_server = ntohl(*bp++); | |
67 | EXTRACT(status->group); | |
08e0e7c8 DH |
68 | bp++; /* sync counter */ |
69 | data_version |= (u64) ntohl(*bp++) << 32; | |
260a9803 DH |
70 | bp++; /* lock count */ |
71 | size |= (u64) ntohl(*bp++) << 32; | |
72 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
73 | *_bp = bp; |
74 | ||
260a9803 DH |
75 | if (size != status->size) { |
76 | status->size = size; | |
77 | changed |= true; | |
08e0e7c8 | 78 | } |
260a9803 | 79 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
80 | |
81 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
82 | status->mtime_client, status->mtime_server); |
83 | ||
84 | if (vnode) { | |
85 | status->parent.vid = vnode->fid.vid; | |
86 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
87 | _debug("vnode changed"); | |
88 | i_size_write(&vnode->vfs_inode, size); | |
89 | vnode->vfs_inode.i_uid = status->owner; | |
90 | vnode->vfs_inode.i_gid = status->group; | |
91 | vnode->vfs_inode.i_version = vnode->fid.unique; | |
92 | vnode->vfs_inode.i_nlink = status->nlink; | |
93 | ||
94 | mode = vnode->vfs_inode.i_mode; | |
95 | mode &= ~S_IALLUGO; | |
96 | mode |= status->mode; | |
97 | barrier(); | |
98 | vnode->vfs_inode.i_mode = mode; | |
99 | } | |
100 | ||
101 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server; | |
102 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; | |
103 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
104 | } | |
105 | ||
31143d5d DH |
106 | expected_version = status->data_version; |
107 | if (store_version) | |
108 | expected_version = *store_version; | |
109 | ||
110 | if (expected_version != data_version) { | |
260a9803 DH |
111 | status->data_version = data_version; |
112 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
113 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
114 | (unsigned long long) data_version, |
115 | vnode->fid.vid, vnode->fid.vnode); | |
260a9803 DH |
116 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
117 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); | |
118 | } | |
31143d5d DH |
119 | } else if (store_version) { |
120 | status->data_version = data_version; | |
1da177e4 | 121 | } |
ec26815a | 122 | } |
1da177e4 | 123 | |
1da177e4 | 124 | /* |
08e0e7c8 | 125 | * decode an AFSCallBack block |
1da177e4 | 126 | */ |
08e0e7c8 | 127 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
1da177e4 | 128 | { |
08e0e7c8 | 129 | const __be32 *bp = *_bp; |
1da177e4 | 130 | |
08e0e7c8 DH |
131 | vnode->cb_version = ntohl(*bp++); |
132 | vnode->cb_expiry = ntohl(*bp++); | |
133 | vnode->cb_type = ntohl(*bp++); | |
134 | vnode->cb_expires = vnode->cb_expiry + get_seconds(); | |
135 | *_bp = bp; | |
ec26815a | 136 | } |
1da177e4 | 137 | |
260a9803 DH |
138 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
139 | struct afs_callback *cb) | |
140 | { | |
141 | const __be32 *bp = *_bp; | |
142 | ||
143 | cb->version = ntohl(*bp++); | |
144 | cb->expiry = ntohl(*bp++); | |
145 | cb->type = ntohl(*bp++); | |
146 | *_bp = bp; | |
147 | } | |
148 | ||
1da177e4 | 149 | /* |
08e0e7c8 | 150 | * decode an AFSVolSync block |
1da177e4 | 151 | */ |
08e0e7c8 DH |
152 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
153 | struct afs_volsync *volsync) | |
1da177e4 | 154 | { |
08e0e7c8 | 155 | const __be32 *bp = *_bp; |
1da177e4 | 156 | |
08e0e7c8 DH |
157 | volsync->creation = ntohl(*bp++); |
158 | bp++; /* spare2 */ | |
159 | bp++; /* spare3 */ | |
160 | bp++; /* spare4 */ | |
161 | bp++; /* spare5 */ | |
162 | bp++; /* spare6 */ | |
163 | *_bp = bp; | |
164 | } | |
1da177e4 | 165 | |
31143d5d DH |
166 | /* |
167 | * encode the requested attributes into an AFSStoreStatus block | |
168 | */ | |
169 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
170 | { | |
171 | __be32 *bp = *_bp; | |
172 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
173 | ||
174 | mask = 0; | |
175 | if (attr->ia_valid & ATTR_MTIME) { | |
176 | mask |= AFS_SET_MTIME; | |
177 | mtime = attr->ia_mtime.tv_sec; | |
178 | } | |
179 | ||
180 | if (attr->ia_valid & ATTR_UID) { | |
181 | mask |= AFS_SET_OWNER; | |
182 | owner = attr->ia_uid; | |
183 | } | |
184 | ||
185 | if (attr->ia_valid & ATTR_GID) { | |
186 | mask |= AFS_SET_GROUP; | |
187 | group = attr->ia_gid; | |
188 | } | |
189 | ||
190 | if (attr->ia_valid & ATTR_MODE) { | |
191 | mask |= AFS_SET_MODE; | |
192 | mode = attr->ia_mode & S_IALLUGO; | |
193 | } | |
194 | ||
195 | *bp++ = htonl(mask); | |
196 | *bp++ = htonl(mtime); | |
197 | *bp++ = htonl(owner); | |
198 | *bp++ = htonl(group); | |
199 | *bp++ = htonl(mode); | |
200 | *bp++ = 0; /* segment size */ | |
201 | *_bp = bp; | |
202 | } | |
203 | ||
08e0e7c8 DH |
204 | /* |
205 | * deliver reply data to an FS.FetchStatus | |
206 | */ | |
207 | static int afs_deliver_fs_fetch_status(struct afs_call *call, | |
208 | struct sk_buff *skb, bool last) | |
209 | { | |
260a9803 | 210 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 211 | const __be32 *bp; |
1da177e4 | 212 | |
08e0e7c8 | 213 | _enter(",,%u", last); |
1da177e4 | 214 | |
08e0e7c8 DH |
215 | afs_transfer_reply(call, skb); |
216 | if (!last) | |
217 | return 0; | |
1da177e4 | 218 | |
08e0e7c8 DH |
219 | if (call->reply_size != call->reply_max) |
220 | return -EBADMSG; | |
1da177e4 | 221 | |
08e0e7c8 DH |
222 | /* unmarshall the reply once we've received all of it */ |
223 | bp = call->buffer; | |
31143d5d | 224 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 225 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
226 | if (call->reply2) |
227 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 228 | |
08e0e7c8 DH |
229 | _leave(" = 0 [done]"); |
230 | return 0; | |
ec26815a | 231 | } |
08e0e7c8 DH |
232 | |
233 | /* | |
234 | * FS.FetchStatus operation type | |
235 | */ | |
236 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 237 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
238 | .deliver = afs_deliver_fs_fetch_status, |
239 | .abort_to_error = afs_abort_to_error, | |
240 | .destructor = afs_flat_call_destructor, | |
241 | }; | |
1da177e4 | 242 | |
1da177e4 LT |
243 | /* |
244 | * fetch the status information for a file | |
245 | */ | |
08e0e7c8 | 246 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 247 | struct key *key, |
08e0e7c8 DH |
248 | struct afs_vnode *vnode, |
249 | struct afs_volsync *volsync, | |
250 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 251 | { |
08e0e7c8 | 252 | struct afs_call *call; |
1da177e4 LT |
253 | __be32 *bp; |
254 | ||
416351f2 | 255 | _enter(",%x,{%x:%u},,", |
260a9803 | 256 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 257 | |
260a9803 | 258 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
259 | if (!call) |
260 | return -ENOMEM; | |
1da177e4 | 261 | |
00d3b7a4 | 262 | call->key = key; |
08e0e7c8 DH |
263 | call->reply = vnode; |
264 | call->reply2 = volsync; | |
265 | call->service_id = FS_SERVICE; | |
266 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
267 | |
268 | /* marshall the parameters */ | |
08e0e7c8 | 269 | bp = call->request; |
1da177e4 LT |
270 | bp[0] = htonl(FSFETCHSTATUS); |
271 | bp[1] = htonl(vnode->fid.vid); | |
272 | bp[2] = htonl(vnode->fid.vnode); | |
273 | bp[3] = htonl(vnode->fid.unique); | |
274 | ||
08e0e7c8 | 275 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 276 | } |
1da177e4 | 277 | |
1da177e4 | 278 | /* |
08e0e7c8 | 279 | * deliver reply data to an FS.FetchData |
1da177e4 | 280 | */ |
08e0e7c8 DH |
281 | static int afs_deliver_fs_fetch_data(struct afs_call *call, |
282 | struct sk_buff *skb, bool last) | |
1da177e4 | 283 | { |
260a9803 | 284 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 DH |
285 | const __be32 *bp; |
286 | struct page *page; | |
287 | void *buffer; | |
1da177e4 | 288 | int ret; |
1da177e4 | 289 | |
08e0e7c8 DH |
290 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
291 | ||
292 | switch (call->unmarshall) { | |
293 | case 0: | |
294 | call->offset = 0; | |
295 | call->unmarshall++; | |
b9b1f8d5 DH |
296 | if (call->operation_ID != FSFETCHDATA64) { |
297 | call->unmarshall++; | |
298 | goto no_msw; | |
299 | } | |
08e0e7c8 | 300 | |
b9b1f8d5 DH |
301 | /* extract the upper part of the returned data length of an |
302 | * FSFETCHDATA64 op (which should always be 0 using this | |
303 | * client) */ | |
08e0e7c8 | 304 | case 1: |
b9b1f8d5 DH |
305 | _debug("extract data length (MSW)"); |
306 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
307 | switch (ret) { | |
308 | case 0: break; | |
309 | case -EAGAIN: return 0; | |
310 | default: return ret; | |
311 | } | |
312 | ||
313 | call->count = ntohl(call->tmp); | |
314 | _debug("DATA length MSW: %u", call->count); | |
315 | if (call->count > 0) | |
316 | return -EBADMSG; | |
317 | call->offset = 0; | |
318 | call->unmarshall++; | |
319 | ||
320 | no_msw: | |
321 | /* extract the returned data length */ | |
322 | case 2: | |
08e0e7c8 DH |
323 | _debug("extract data length"); |
324 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
325 | switch (ret) { | |
326 | case 0: break; | |
327 | case -EAGAIN: return 0; | |
328 | default: return ret; | |
329 | } | |
1da177e4 | 330 | |
08e0e7c8 DH |
331 | call->count = ntohl(call->tmp); |
332 | _debug("DATA length: %u", call->count); | |
333 | if (call->count > PAGE_SIZE) | |
334 | return -EBADMSG; | |
335 | call->offset = 0; | |
336 | call->unmarshall++; | |
337 | ||
08e0e7c8 | 338 | /* extract the returned data */ |
b9b1f8d5 | 339 | case 3: |
08e0e7c8 | 340 | _debug("extract data"); |
416351f2 DH |
341 | if (call->count > 0) { |
342 | page = call->reply3; | |
343 | buffer = kmap_atomic(page, KM_USER0); | |
344 | ret = afs_extract_data(call, skb, last, buffer, | |
345 | call->count); | |
346 | kunmap_atomic(buffer, KM_USER0); | |
347 | switch (ret) { | |
348 | case 0: break; | |
349 | case -EAGAIN: return 0; | |
350 | default: return ret; | |
351 | } | |
08e0e7c8 | 352 | } |
1da177e4 | 353 | |
08e0e7c8 DH |
354 | call->offset = 0; |
355 | call->unmarshall++; | |
1da177e4 | 356 | |
08e0e7c8 | 357 | /* extract the metadata */ |
b9b1f8d5 | 358 | case 4: |
260a9803 DH |
359 | ret = afs_extract_data(call, skb, last, call->buffer, |
360 | (21 + 3 + 6) * 4); | |
08e0e7c8 DH |
361 | switch (ret) { |
362 | case 0: break; | |
363 | case -EAGAIN: return 0; | |
364 | default: return ret; | |
365 | } | |
366 | ||
367 | bp = call->buffer; | |
31143d5d | 368 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 369 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
370 | if (call->reply2) |
371 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
372 | ||
373 | call->offset = 0; | |
374 | call->unmarshall++; | |
1da177e4 | 375 | |
b9b1f8d5 | 376 | case 5: |
08e0e7c8 DH |
377 | _debug("trailer"); |
378 | if (skb->len != 0) | |
379 | return -EBADMSG; | |
380 | break; | |
1da177e4 LT |
381 | } |
382 | ||
08e0e7c8 DH |
383 | if (!last) |
384 | return 0; | |
385 | ||
416351f2 DH |
386 | if (call->count < PAGE_SIZE) { |
387 | _debug("clear"); | |
388 | page = call->reply3; | |
389 | buffer = kmap_atomic(page, KM_USER0); | |
390 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); | |
391 | kunmap_atomic(buffer, KM_USER0); | |
392 | } | |
393 | ||
08e0e7c8 DH |
394 | _leave(" = 0 [done]"); |
395 | return 0; | |
ec26815a | 396 | } |
1da177e4 | 397 | |
1da177e4 | 398 | /* |
08e0e7c8 | 399 | * FS.FetchData operation type |
1da177e4 | 400 | */ |
08e0e7c8 | 401 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 402 | .name = "FS.FetchData", |
08e0e7c8 DH |
403 | .deliver = afs_deliver_fs_fetch_data, |
404 | .abort_to_error = afs_abort_to_error, | |
405 | .destructor = afs_flat_call_destructor, | |
406 | }; | |
407 | ||
b9b1f8d5 DH |
408 | static const struct afs_call_type afs_RXFSFetchData64 = { |
409 | .name = "FS.FetchData64", | |
410 | .deliver = afs_deliver_fs_fetch_data, | |
411 | .abort_to_error = afs_abort_to_error, | |
412 | .destructor = afs_flat_call_destructor, | |
413 | }; | |
414 | ||
415 | /* | |
416 | * fetch data from a very large file | |
417 | */ | |
418 | static int afs_fs_fetch_data64(struct afs_server *server, | |
419 | struct key *key, | |
420 | struct afs_vnode *vnode, | |
421 | off_t offset, size_t length, | |
422 | struct page *buffer, | |
423 | const struct afs_wait_mode *wait_mode) | |
424 | { | |
425 | struct afs_call *call; | |
426 | __be32 *bp; | |
427 | ||
428 | _enter(""); | |
429 | ||
430 | ASSERTCMP(length, <, ULONG_MAX); | |
431 | ||
432 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); | |
433 | if (!call) | |
434 | return -ENOMEM; | |
435 | ||
436 | call->key = key; | |
437 | call->reply = vnode; | |
438 | call->reply2 = NULL; /* volsync */ | |
439 | call->reply3 = buffer; | |
440 | call->service_id = FS_SERVICE; | |
441 | call->port = htons(AFS_FS_PORT); | |
442 | call->operation_ID = FSFETCHDATA64; | |
443 | ||
444 | /* marshall the parameters */ | |
445 | bp = call->request; | |
446 | bp[0] = htonl(FSFETCHDATA64); | |
447 | bp[1] = htonl(vnode->fid.vid); | |
448 | bp[2] = htonl(vnode->fid.vnode); | |
449 | bp[3] = htonl(vnode->fid.unique); | |
450 | bp[4] = htonl(upper_32_bits(offset)); | |
451 | bp[5] = htonl((u32) offset); | |
452 | bp[6] = 0; | |
453 | bp[7] = htonl((u32) length); | |
454 | ||
455 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
456 | } | |
457 | ||
08e0e7c8 DH |
458 | /* |
459 | * fetch data from a file | |
460 | */ | |
461 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 462 | struct key *key, |
08e0e7c8 DH |
463 | struct afs_vnode *vnode, |
464 | off_t offset, size_t length, | |
465 | struct page *buffer, | |
08e0e7c8 | 466 | const struct afs_wait_mode *wait_mode) |
1da177e4 | 467 | { |
08e0e7c8 | 468 | struct afs_call *call; |
1da177e4 LT |
469 | __be32 *bp; |
470 | ||
b9b1f8d5 DH |
471 | if (upper_32_bits(offset) || upper_32_bits(offset + length)) |
472 | return afs_fs_fetch_data64(server, key, vnode, offset, length, | |
473 | buffer, wait_mode); | |
474 | ||
08e0e7c8 | 475 | _enter(""); |
1da177e4 | 476 | |
260a9803 | 477 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
478 | if (!call) |
479 | return -ENOMEM; | |
1da177e4 | 480 | |
00d3b7a4 | 481 | call->key = key; |
08e0e7c8 | 482 | call->reply = vnode; |
260a9803 | 483 | call->reply2 = NULL; /* volsync */ |
08e0e7c8 DH |
484 | call->reply3 = buffer; |
485 | call->service_id = FS_SERVICE; | |
486 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 487 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
488 | |
489 | /* marshall the parameters */ | |
08e0e7c8 DH |
490 | bp = call->request; |
491 | bp[0] = htonl(FSFETCHDATA); | |
492 | bp[1] = htonl(vnode->fid.vid); | |
493 | bp[2] = htonl(vnode->fid.vnode); | |
494 | bp[3] = htonl(vnode->fid.unique); | |
495 | bp[4] = htonl(offset); | |
496 | bp[5] = htonl(length); | |
1da177e4 | 497 | |
08e0e7c8 DH |
498 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
499 | } | |
1da177e4 | 500 | |
08e0e7c8 DH |
501 | /* |
502 | * deliver reply data to an FS.GiveUpCallBacks | |
503 | */ | |
504 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call, | |
505 | struct sk_buff *skb, bool last) | |
506 | { | |
507 | _enter(",{%u},%d", skb->len, last); | |
1da177e4 | 508 | |
08e0e7c8 DH |
509 | if (skb->len > 0) |
510 | return -EBADMSG; /* shouldn't be any reply data */ | |
511 | return 0; | |
ec26815a | 512 | } |
1da177e4 | 513 | |
1da177e4 | 514 | /* |
08e0e7c8 DH |
515 | * FS.GiveUpCallBacks operation type |
516 | */ | |
517 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 518 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
519 | .deliver = afs_deliver_fs_give_up_callbacks, |
520 | .abort_to_error = afs_abort_to_error, | |
521 | .destructor = afs_flat_call_destructor, | |
522 | }; | |
523 | ||
524 | /* | |
525 | * give up a set of callbacks | |
526 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 527 | */ |
08e0e7c8 DH |
528 | int afs_fs_give_up_callbacks(struct afs_server *server, |
529 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 530 | { |
08e0e7c8 DH |
531 | struct afs_call *call; |
532 | size_t ncallbacks; | |
533 | __be32 *bp, *tp; | |
534 | int loop; | |
1da177e4 | 535 | |
08e0e7c8 DH |
536 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
537 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 538 | |
08e0e7c8 | 539 | _enter("{%zu},", ncallbacks); |
1da177e4 | 540 | |
08e0e7c8 DH |
541 | if (ncallbacks == 0) |
542 | return 0; | |
543 | if (ncallbacks > AFSCBMAX) | |
544 | ncallbacks = AFSCBMAX; | |
1da177e4 | 545 | |
08e0e7c8 | 546 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 547 | |
08e0e7c8 DH |
548 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
549 | 12 + ncallbacks * 6 * 4, 0); | |
550 | if (!call) | |
551 | return -ENOMEM; | |
552 | ||
553 | call->service_id = FS_SERVICE; | |
554 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
555 | |
556 | /* marshall the parameters */ | |
08e0e7c8 DH |
557 | bp = call->request; |
558 | tp = bp + 2 + ncallbacks * 3; | |
559 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
560 | *bp++ = htonl(ncallbacks); | |
561 | *tp++ = htonl(ncallbacks); | |
562 | ||
563 | atomic_sub(ncallbacks, &server->cb_break_n); | |
564 | for (loop = ncallbacks; loop > 0; loop--) { | |
565 | struct afs_callback *cb = | |
566 | &server->cb_break[server->cb_break_tail]; | |
567 | ||
568 | *bp++ = htonl(cb->fid.vid); | |
569 | *bp++ = htonl(cb->fid.vnode); | |
570 | *bp++ = htonl(cb->fid.unique); | |
571 | *tp++ = htonl(cb->version); | |
572 | *tp++ = htonl(cb->expiry); | |
573 | *tp++ = htonl(cb->type); | |
574 | smp_mb(); | |
575 | server->cb_break_tail = | |
576 | (server->cb_break_tail + 1) & | |
577 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
578 | } |
579 | ||
08e0e7c8 DH |
580 | ASSERT(ncallbacks > 0); |
581 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 582 | |
08e0e7c8 | 583 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 584 | } |
260a9803 DH |
585 | |
586 | /* | |
587 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
588 | */ | |
589 | static int afs_deliver_fs_create_vnode(struct afs_call *call, | |
590 | struct sk_buff *skb, bool last) | |
591 | { | |
592 | struct afs_vnode *vnode = call->reply; | |
593 | const __be32 *bp; | |
594 | ||
595 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
596 | ||
597 | afs_transfer_reply(call, skb); | |
598 | if (!last) | |
599 | return 0; | |
600 | ||
601 | if (call->reply_size != call->reply_max) | |
602 | return -EBADMSG; | |
603 | ||
604 | /* unmarshall the reply once we've received all of it */ | |
605 | bp = call->buffer; | |
606 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
607 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
608 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
609 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
610 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
611 | ||
612 | _leave(" = 0 [done]"); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | /* | |
617 | * FS.CreateFile and FS.MakeDir operation type | |
618 | */ | |
619 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
620 | .name = "FS.CreateXXXX", | |
621 | .deliver = afs_deliver_fs_create_vnode, | |
622 | .abort_to_error = afs_abort_to_error, | |
623 | .destructor = afs_flat_call_destructor, | |
624 | }; | |
625 | ||
626 | /* | |
627 | * create a file or make a directory | |
628 | */ | |
629 | int afs_fs_create(struct afs_server *server, | |
630 | struct key *key, | |
631 | struct afs_vnode *vnode, | |
632 | const char *name, | |
633 | umode_t mode, | |
634 | struct afs_fid *newfid, | |
635 | struct afs_file_status *newstatus, | |
636 | struct afs_callback *newcb, | |
637 | const struct afs_wait_mode *wait_mode) | |
638 | { | |
639 | struct afs_call *call; | |
640 | size_t namesz, reqsz, padsz; | |
641 | __be32 *bp; | |
642 | ||
643 | _enter(""); | |
644 | ||
645 | namesz = strlen(name); | |
646 | padsz = (4 - (namesz & 3)) & 3; | |
647 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
648 | ||
649 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
650 | (3 + 21 + 21 + 3 + 6) * 4); | |
651 | if (!call) | |
652 | return -ENOMEM; | |
653 | ||
654 | call->key = key; | |
655 | call->reply = vnode; | |
656 | call->reply2 = newfid; | |
657 | call->reply3 = newstatus; | |
658 | call->reply4 = newcb; | |
659 | call->service_id = FS_SERVICE; | |
660 | call->port = htons(AFS_FS_PORT); | |
661 | ||
662 | /* marshall the parameters */ | |
663 | bp = call->request; | |
664 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
665 | *bp++ = htonl(vnode->fid.vid); | |
666 | *bp++ = htonl(vnode->fid.vnode); | |
667 | *bp++ = htonl(vnode->fid.unique); | |
668 | *bp++ = htonl(namesz); | |
669 | memcpy(bp, name, namesz); | |
670 | bp = (void *) bp + namesz; | |
671 | if (padsz > 0) { | |
672 | memset(bp, 0, padsz); | |
673 | bp = (void *) bp + padsz; | |
674 | } | |
675 | *bp++ = htonl(AFS_SET_MODE); | |
676 | *bp++ = 0; /* mtime */ | |
677 | *bp++ = 0; /* owner */ | |
678 | *bp++ = 0; /* group */ | |
679 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
680 | *bp++ = 0; /* segment size */ | |
681 | ||
682 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
683 | } | |
684 | ||
685 | /* | |
686 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
687 | */ | |
688 | static int afs_deliver_fs_remove(struct afs_call *call, | |
689 | struct sk_buff *skb, bool last) | |
690 | { | |
691 | struct afs_vnode *vnode = call->reply; | |
692 | const __be32 *bp; | |
693 | ||
694 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
695 | ||
696 | afs_transfer_reply(call, skb); | |
697 | if (!last) | |
698 | return 0; | |
699 | ||
700 | if (call->reply_size != call->reply_max) | |
701 | return -EBADMSG; | |
702 | ||
703 | /* unmarshall the reply once we've received all of it */ | |
704 | bp = call->buffer; | |
31143d5d | 705 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
706 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
707 | ||
708 | _leave(" = 0 [done]"); | |
709 | return 0; | |
710 | } | |
711 | ||
712 | /* | |
713 | * FS.RemoveDir/FS.RemoveFile operation type | |
714 | */ | |
715 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
716 | .name = "FS.RemoveXXXX", | |
717 | .deliver = afs_deliver_fs_remove, | |
718 | .abort_to_error = afs_abort_to_error, | |
719 | .destructor = afs_flat_call_destructor, | |
720 | }; | |
721 | ||
722 | /* | |
723 | * remove a file or directory | |
724 | */ | |
725 | int afs_fs_remove(struct afs_server *server, | |
726 | struct key *key, | |
727 | struct afs_vnode *vnode, | |
728 | const char *name, | |
729 | bool isdir, | |
730 | const struct afs_wait_mode *wait_mode) | |
731 | { | |
732 | struct afs_call *call; | |
733 | size_t namesz, reqsz, padsz; | |
734 | __be32 *bp; | |
735 | ||
736 | _enter(""); | |
737 | ||
738 | namesz = strlen(name); | |
739 | padsz = (4 - (namesz & 3)) & 3; | |
740 | reqsz = (5 * 4) + namesz + padsz; | |
741 | ||
742 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
743 | if (!call) | |
744 | return -ENOMEM; | |
745 | ||
746 | call->key = key; | |
747 | call->reply = vnode; | |
748 | call->service_id = FS_SERVICE; | |
749 | call->port = htons(AFS_FS_PORT); | |
750 | ||
751 | /* marshall the parameters */ | |
752 | bp = call->request; | |
753 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
754 | *bp++ = htonl(vnode->fid.vid); | |
755 | *bp++ = htonl(vnode->fid.vnode); | |
756 | *bp++ = htonl(vnode->fid.unique); | |
757 | *bp++ = htonl(namesz); | |
758 | memcpy(bp, name, namesz); | |
759 | bp = (void *) bp + namesz; | |
760 | if (padsz > 0) { | |
761 | memset(bp, 0, padsz); | |
762 | bp = (void *) bp + padsz; | |
763 | } | |
764 | ||
765 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
766 | } | |
767 | ||
768 | /* | |
769 | * deliver reply data to an FS.Link | |
770 | */ | |
771 | static int afs_deliver_fs_link(struct afs_call *call, | |
772 | struct sk_buff *skb, bool last) | |
773 | { | |
774 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
775 | const __be32 *bp; | |
776 | ||
777 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
778 | ||
779 | afs_transfer_reply(call, skb); | |
780 | if (!last) | |
781 | return 0; | |
782 | ||
783 | if (call->reply_size != call->reply_max) | |
784 | return -EBADMSG; | |
785 | ||
786 | /* unmarshall the reply once we've received all of it */ | |
787 | bp = call->buffer; | |
31143d5d DH |
788 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
789 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
790 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
791 | ||
792 | _leave(" = 0 [done]"); | |
793 | return 0; | |
794 | } | |
795 | ||
796 | /* | |
797 | * FS.Link operation type | |
798 | */ | |
799 | static const struct afs_call_type afs_RXFSLink = { | |
800 | .name = "FS.Link", | |
801 | .deliver = afs_deliver_fs_link, | |
802 | .abort_to_error = afs_abort_to_error, | |
803 | .destructor = afs_flat_call_destructor, | |
804 | }; | |
805 | ||
806 | /* | |
807 | * make a hard link | |
808 | */ | |
809 | int afs_fs_link(struct afs_server *server, | |
810 | struct key *key, | |
811 | struct afs_vnode *dvnode, | |
812 | struct afs_vnode *vnode, | |
813 | const char *name, | |
814 | const struct afs_wait_mode *wait_mode) | |
815 | { | |
816 | struct afs_call *call; | |
817 | size_t namesz, reqsz, padsz; | |
818 | __be32 *bp; | |
819 | ||
820 | _enter(""); | |
821 | ||
822 | namesz = strlen(name); | |
823 | padsz = (4 - (namesz & 3)) & 3; | |
824 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
825 | ||
826 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
827 | if (!call) | |
828 | return -ENOMEM; | |
829 | ||
830 | call->key = key; | |
831 | call->reply = dvnode; | |
832 | call->reply2 = vnode; | |
833 | call->service_id = FS_SERVICE; | |
834 | call->port = htons(AFS_FS_PORT); | |
835 | ||
836 | /* marshall the parameters */ | |
837 | bp = call->request; | |
838 | *bp++ = htonl(FSLINK); | |
839 | *bp++ = htonl(dvnode->fid.vid); | |
840 | *bp++ = htonl(dvnode->fid.vnode); | |
841 | *bp++ = htonl(dvnode->fid.unique); | |
842 | *bp++ = htonl(namesz); | |
843 | memcpy(bp, name, namesz); | |
844 | bp = (void *) bp + namesz; | |
845 | if (padsz > 0) { | |
846 | memset(bp, 0, padsz); | |
847 | bp = (void *) bp + padsz; | |
848 | } | |
849 | *bp++ = htonl(vnode->fid.vid); | |
850 | *bp++ = htonl(vnode->fid.vnode); | |
851 | *bp++ = htonl(vnode->fid.unique); | |
852 | ||
853 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
854 | } | |
855 | ||
856 | /* | |
857 | * deliver reply data to an FS.Symlink | |
858 | */ | |
859 | static int afs_deliver_fs_symlink(struct afs_call *call, | |
860 | struct sk_buff *skb, bool last) | |
861 | { | |
862 | struct afs_vnode *vnode = call->reply; | |
863 | const __be32 *bp; | |
864 | ||
865 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
866 | ||
867 | afs_transfer_reply(call, skb); | |
868 | if (!last) | |
869 | return 0; | |
870 | ||
871 | if (call->reply_size != call->reply_max) | |
872 | return -EBADMSG; | |
873 | ||
874 | /* unmarshall the reply once we've received all of it */ | |
875 | bp = call->buffer; | |
876 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
877 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
878 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
879 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
880 | ||
881 | _leave(" = 0 [done]"); | |
882 | return 0; | |
883 | } | |
884 | ||
885 | /* | |
886 | * FS.Symlink operation type | |
887 | */ | |
888 | static const struct afs_call_type afs_RXFSSymlink = { | |
889 | .name = "FS.Symlink", | |
890 | .deliver = afs_deliver_fs_symlink, | |
891 | .abort_to_error = afs_abort_to_error, | |
892 | .destructor = afs_flat_call_destructor, | |
893 | }; | |
894 | ||
895 | /* | |
896 | * create a symbolic link | |
897 | */ | |
898 | int afs_fs_symlink(struct afs_server *server, | |
899 | struct key *key, | |
900 | struct afs_vnode *vnode, | |
901 | const char *name, | |
902 | const char *contents, | |
903 | struct afs_fid *newfid, | |
904 | struct afs_file_status *newstatus, | |
905 | const struct afs_wait_mode *wait_mode) | |
906 | { | |
907 | struct afs_call *call; | |
908 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
909 | __be32 *bp; | |
910 | ||
911 | _enter(""); | |
912 | ||
913 | namesz = strlen(name); | |
914 | padsz = (4 - (namesz & 3)) & 3; | |
915 | ||
916 | c_namesz = strlen(contents); | |
917 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
918 | ||
919 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
920 | ||
921 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
922 | (3 + 21 + 21 + 6) * 4); | |
923 | if (!call) | |
924 | return -ENOMEM; | |
925 | ||
926 | call->key = key; | |
927 | call->reply = vnode; | |
928 | call->reply2 = newfid; | |
929 | call->reply3 = newstatus; | |
930 | call->service_id = FS_SERVICE; | |
931 | call->port = htons(AFS_FS_PORT); | |
932 | ||
933 | /* marshall the parameters */ | |
934 | bp = call->request; | |
935 | *bp++ = htonl(FSSYMLINK); | |
936 | *bp++ = htonl(vnode->fid.vid); | |
937 | *bp++ = htonl(vnode->fid.vnode); | |
938 | *bp++ = htonl(vnode->fid.unique); | |
939 | *bp++ = htonl(namesz); | |
940 | memcpy(bp, name, namesz); | |
941 | bp = (void *) bp + namesz; | |
942 | if (padsz > 0) { | |
943 | memset(bp, 0, padsz); | |
944 | bp = (void *) bp + padsz; | |
945 | } | |
946 | *bp++ = htonl(c_namesz); | |
947 | memcpy(bp, contents, c_namesz); | |
948 | bp = (void *) bp + c_namesz; | |
949 | if (c_padsz > 0) { | |
950 | memset(bp, 0, c_padsz); | |
951 | bp = (void *) bp + c_padsz; | |
952 | } | |
953 | *bp++ = htonl(AFS_SET_MODE); | |
954 | *bp++ = 0; /* mtime */ | |
955 | *bp++ = 0; /* owner */ | |
956 | *bp++ = 0; /* group */ | |
957 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
958 | *bp++ = 0; /* segment size */ | |
959 | ||
960 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
961 | } | |
962 | ||
963 | /* | |
964 | * deliver reply data to an FS.Rename | |
965 | */ | |
966 | static int afs_deliver_fs_rename(struct afs_call *call, | |
967 | struct sk_buff *skb, bool last) | |
968 | { | |
969 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
970 | const __be32 *bp; | |
971 | ||
972 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
973 | ||
974 | afs_transfer_reply(call, skb); | |
975 | if (!last) | |
976 | return 0; | |
977 | ||
978 | if (call->reply_size != call->reply_max) | |
979 | return -EBADMSG; | |
980 | ||
981 | /* unmarshall the reply once we've received all of it */ | |
982 | bp = call->buffer; | |
31143d5d | 983 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 984 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
985 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
986 | NULL); | |
260a9803 DH |
987 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
988 | ||
989 | _leave(" = 0 [done]"); | |
990 | return 0; | |
991 | } | |
992 | ||
993 | /* | |
994 | * FS.Rename operation type | |
995 | */ | |
996 | static const struct afs_call_type afs_RXFSRename = { | |
997 | .name = "FS.Rename", | |
998 | .deliver = afs_deliver_fs_rename, | |
999 | .abort_to_error = afs_abort_to_error, | |
1000 | .destructor = afs_flat_call_destructor, | |
1001 | }; | |
1002 | ||
1003 | /* | |
1004 | * create a symbolic link | |
1005 | */ | |
1006 | int afs_fs_rename(struct afs_server *server, | |
1007 | struct key *key, | |
1008 | struct afs_vnode *orig_dvnode, | |
1009 | const char *orig_name, | |
1010 | struct afs_vnode *new_dvnode, | |
1011 | const char *new_name, | |
1012 | const struct afs_wait_mode *wait_mode) | |
1013 | { | |
1014 | struct afs_call *call; | |
1015 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1016 | __be32 *bp; | |
1017 | ||
1018 | _enter(""); | |
1019 | ||
1020 | o_namesz = strlen(orig_name); | |
1021 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1022 | ||
1023 | n_namesz = strlen(new_name); | |
1024 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1025 | ||
1026 | reqsz = (4 * 4) + | |
1027 | 4 + o_namesz + o_padsz + | |
1028 | (3 * 4) + | |
1029 | 4 + n_namesz + n_padsz; | |
1030 | ||
1031 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1032 | if (!call) | |
1033 | return -ENOMEM; | |
1034 | ||
1035 | call->key = key; | |
1036 | call->reply = orig_dvnode; | |
1037 | call->reply2 = new_dvnode; | |
1038 | call->service_id = FS_SERVICE; | |
1039 | call->port = htons(AFS_FS_PORT); | |
1040 | ||
1041 | /* marshall the parameters */ | |
1042 | bp = call->request; | |
1043 | *bp++ = htonl(FSRENAME); | |
1044 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1045 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1046 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1047 | *bp++ = htonl(o_namesz); | |
1048 | memcpy(bp, orig_name, o_namesz); | |
1049 | bp = (void *) bp + o_namesz; | |
1050 | if (o_padsz > 0) { | |
1051 | memset(bp, 0, o_padsz); | |
1052 | bp = (void *) bp + o_padsz; | |
1053 | } | |
1054 | ||
1055 | *bp++ = htonl(new_dvnode->fid.vid); | |
1056 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1057 | *bp++ = htonl(new_dvnode->fid.unique); | |
1058 | *bp++ = htonl(n_namesz); | |
1059 | memcpy(bp, new_name, n_namesz); | |
1060 | bp = (void *) bp + n_namesz; | |
1061 | if (n_padsz > 0) { | |
1062 | memset(bp, 0, n_padsz); | |
1063 | bp = (void *) bp + n_padsz; | |
1064 | } | |
1065 | ||
1066 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1067 | } | |
31143d5d DH |
1068 | |
1069 | /* | |
1070 | * deliver reply data to an FS.StoreData | |
1071 | */ | |
1072 | static int afs_deliver_fs_store_data(struct afs_call *call, | |
1073 | struct sk_buff *skb, bool last) | |
1074 | { | |
1075 | struct afs_vnode *vnode = call->reply; | |
1076 | const __be32 *bp; | |
1077 | ||
1078 | _enter(",,%u", last); | |
1079 | ||
1080 | afs_transfer_reply(call, skb); | |
1081 | if (!last) { | |
1082 | _leave(" = 0 [more]"); | |
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | if (call->reply_size != call->reply_max) { | |
1087 | _leave(" = -EBADMSG [%u != %u]", | |
1088 | call->reply_size, call->reply_max); | |
1089 | return -EBADMSG; | |
1090 | } | |
1091 | ||
1092 | /* unmarshall the reply once we've received all of it */ | |
1093 | bp = call->buffer; | |
1094 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1095 | &call->store_version); | |
1096 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1097 | ||
1098 | afs_pages_written_back(vnode, call); | |
1099 | ||
1100 | _leave(" = 0 [done]"); | |
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | /* | |
1105 | * FS.StoreData operation type | |
1106 | */ | |
1107 | static const struct afs_call_type afs_RXFSStoreData = { | |
1108 | .name = "FS.StoreData", | |
1109 | .deliver = afs_deliver_fs_store_data, | |
1110 | .abort_to_error = afs_abort_to_error, | |
1111 | .destructor = afs_flat_call_destructor, | |
1112 | }; | |
1113 | ||
b9b1f8d5 DH |
1114 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1115 | .name = "FS.StoreData64", | |
1116 | .deliver = afs_deliver_fs_store_data, | |
1117 | .abort_to_error = afs_abort_to_error, | |
1118 | .destructor = afs_flat_call_destructor, | |
1119 | }; | |
1120 | ||
1121 | /* | |
1122 | * store a set of pages to a very large file | |
1123 | */ | |
1124 | static int afs_fs_store_data64(struct afs_server *server, | |
1125 | struct afs_writeback *wb, | |
1126 | pgoff_t first, pgoff_t last, | |
1127 | unsigned offset, unsigned to, | |
1128 | loff_t size, loff_t pos, loff_t i_size, | |
1129 | const struct afs_wait_mode *wait_mode) | |
1130 | { | |
1131 | struct afs_vnode *vnode = wb->vnode; | |
1132 | struct afs_call *call; | |
1133 | __be32 *bp; | |
1134 | ||
1135 | _enter(",%x,{%x:%u},,", | |
1136 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1137 | ||
1138 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1139 | (4 + 6 + 3 * 2) * 4, | |
1140 | (21 + 6) * 4); | |
1141 | if (!call) | |
1142 | return -ENOMEM; | |
1143 | ||
1144 | call->wb = wb; | |
1145 | call->key = wb->key; | |
1146 | call->reply = vnode; | |
1147 | call->service_id = FS_SERVICE; | |
1148 | call->port = htons(AFS_FS_PORT); | |
1149 | call->mapping = vnode->vfs_inode.i_mapping; | |
1150 | call->first = first; | |
1151 | call->last = last; | |
1152 | call->first_offset = offset; | |
1153 | call->last_to = to; | |
1154 | call->send_pages = true; | |
1155 | call->store_version = vnode->status.data_version + 1; | |
1156 | ||
1157 | /* marshall the parameters */ | |
1158 | bp = call->request; | |
1159 | *bp++ = htonl(FSSTOREDATA64); | |
1160 | *bp++ = htonl(vnode->fid.vid); | |
1161 | *bp++ = htonl(vnode->fid.vnode); | |
1162 | *bp++ = htonl(vnode->fid.unique); | |
1163 | ||
1164 | *bp++ = 0; /* mask */ | |
1165 | *bp++ = 0; /* mtime */ | |
1166 | *bp++ = 0; /* owner */ | |
1167 | *bp++ = 0; /* group */ | |
1168 | *bp++ = 0; /* unix mode */ | |
1169 | *bp++ = 0; /* segment size */ | |
1170 | ||
1171 | *bp++ = htonl(pos >> 32); | |
1172 | *bp++ = htonl((u32) pos); | |
1173 | *bp++ = htonl(size >> 32); | |
1174 | *bp++ = htonl((u32) size); | |
1175 | *bp++ = htonl(i_size >> 32); | |
1176 | *bp++ = htonl((u32) i_size); | |
1177 | ||
1178 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1179 | } | |
1180 | ||
31143d5d DH |
1181 | /* |
1182 | * store a set of pages | |
1183 | */ | |
1184 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1185 | pgoff_t first, pgoff_t last, | |
1186 | unsigned offset, unsigned to, | |
1187 | const struct afs_wait_mode *wait_mode) | |
1188 | { | |
1189 | struct afs_vnode *vnode = wb->vnode; | |
1190 | struct afs_call *call; | |
1191 | loff_t size, pos, i_size; | |
1192 | __be32 *bp; | |
1193 | ||
1194 | _enter(",%x,{%x:%u},,", | |
1195 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1196 | ||
1197 | size = to - offset; | |
1198 | if (first != last) | |
1199 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1200 | pos = (loff_t)first << PAGE_SHIFT; | |
1201 | pos += offset; | |
1202 | ||
1203 | i_size = i_size_read(&vnode->vfs_inode); | |
1204 | if (pos + size > i_size) | |
1205 | i_size = size + pos; | |
1206 | ||
1207 | _debug("size %llx, at %llx, i_size %llx", | |
1208 | (unsigned long long) size, (unsigned long long) pos, | |
1209 | (unsigned long long) i_size); | |
1210 | ||
b9b1f8d5 DH |
1211 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1212 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
1213 | size, pos, i_size, wait_mode); | |
31143d5d DH |
1214 | |
1215 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1216 | (4 + 6 + 3) * 4, | |
1217 | (21 + 6) * 4); | |
1218 | if (!call) | |
1219 | return -ENOMEM; | |
1220 | ||
1221 | call->wb = wb; | |
1222 | call->key = wb->key; | |
1223 | call->reply = vnode; | |
1224 | call->service_id = FS_SERVICE; | |
1225 | call->port = htons(AFS_FS_PORT); | |
1226 | call->mapping = vnode->vfs_inode.i_mapping; | |
1227 | call->first = first; | |
1228 | call->last = last; | |
1229 | call->first_offset = offset; | |
1230 | call->last_to = to; | |
1231 | call->send_pages = true; | |
1232 | call->store_version = vnode->status.data_version + 1; | |
1233 | ||
1234 | /* marshall the parameters */ | |
1235 | bp = call->request; | |
1236 | *bp++ = htonl(FSSTOREDATA); | |
1237 | *bp++ = htonl(vnode->fid.vid); | |
1238 | *bp++ = htonl(vnode->fid.vnode); | |
1239 | *bp++ = htonl(vnode->fid.unique); | |
1240 | ||
1241 | *bp++ = 0; /* mask */ | |
1242 | *bp++ = 0; /* mtime */ | |
1243 | *bp++ = 0; /* owner */ | |
1244 | *bp++ = 0; /* group */ | |
1245 | *bp++ = 0; /* unix mode */ | |
1246 | *bp++ = 0; /* segment size */ | |
1247 | ||
1248 | *bp++ = htonl(pos); | |
1249 | *bp++ = htonl(size); | |
1250 | *bp++ = htonl(i_size); | |
1251 | ||
1252 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1253 | } | |
1254 | ||
1255 | /* | |
1256 | * deliver reply data to an FS.StoreStatus | |
1257 | */ | |
1258 | static int afs_deliver_fs_store_status(struct afs_call *call, | |
1259 | struct sk_buff *skb, bool last) | |
1260 | { | |
1261 | afs_dataversion_t *store_version; | |
1262 | struct afs_vnode *vnode = call->reply; | |
1263 | const __be32 *bp; | |
1264 | ||
1265 | _enter(",,%u", last); | |
1266 | ||
1267 | afs_transfer_reply(call, skb); | |
1268 | if (!last) { | |
1269 | _leave(" = 0 [more]"); | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | if (call->reply_size != call->reply_max) { | |
1274 | _leave(" = -EBADMSG [%u != %u]", | |
1275 | call->reply_size, call->reply_max); | |
1276 | return -EBADMSG; | |
1277 | } | |
1278 | ||
1279 | /* unmarshall the reply once we've received all of it */ | |
1280 | store_version = NULL; | |
1281 | if (call->operation_ID == FSSTOREDATA) | |
1282 | store_version = &call->store_version; | |
1283 | ||
1284 | bp = call->buffer; | |
1285 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1286 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1287 | ||
1288 | _leave(" = 0 [done]"); | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | /* | |
1293 | * FS.StoreStatus operation type | |
1294 | */ | |
1295 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1296 | .name = "FS.StoreStatus", | |
1297 | .deliver = afs_deliver_fs_store_status, | |
1298 | .abort_to_error = afs_abort_to_error, | |
1299 | .destructor = afs_flat_call_destructor, | |
1300 | }; | |
1301 | ||
1302 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1303 | .name = "FS.StoreData", | |
1304 | .deliver = afs_deliver_fs_store_status, | |
1305 | .abort_to_error = afs_abort_to_error, | |
1306 | .destructor = afs_flat_call_destructor, | |
1307 | }; | |
1308 | ||
b9b1f8d5 DH |
1309 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1310 | .name = "FS.StoreData64", | |
1311 | .deliver = afs_deliver_fs_store_status, | |
1312 | .abort_to_error = afs_abort_to_error, | |
1313 | .destructor = afs_flat_call_destructor, | |
1314 | }; | |
1315 | ||
1316 | /* | |
1317 | * set the attributes on a very large file, using FS.StoreData rather than | |
1318 | * FS.StoreStatus so as to alter the file size also | |
1319 | */ | |
1320 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1321 | struct afs_vnode *vnode, struct iattr *attr, | |
1322 | const struct afs_wait_mode *wait_mode) | |
1323 | { | |
1324 | struct afs_call *call; | |
1325 | __be32 *bp; | |
1326 | ||
1327 | _enter(",%x,{%x:%u},,", | |
1328 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1329 | ||
1330 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1331 | ||
1332 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1333 | (4 + 6 + 3 * 2) * 4, | |
1334 | (21 + 6) * 4); | |
1335 | if (!call) | |
1336 | return -ENOMEM; | |
1337 | ||
1338 | call->key = key; | |
1339 | call->reply = vnode; | |
1340 | call->service_id = FS_SERVICE; | |
1341 | call->port = htons(AFS_FS_PORT); | |
1342 | call->store_version = vnode->status.data_version + 1; | |
1343 | call->operation_ID = FSSTOREDATA; | |
1344 | ||
1345 | /* marshall the parameters */ | |
1346 | bp = call->request; | |
1347 | *bp++ = htonl(FSSTOREDATA64); | |
1348 | *bp++ = htonl(vnode->fid.vid); | |
1349 | *bp++ = htonl(vnode->fid.vnode); | |
1350 | *bp++ = htonl(vnode->fid.unique); | |
1351 | ||
1352 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1353 | ||
1354 | *bp++ = 0; /* position of start of write */ | |
1355 | *bp++ = 0; | |
1356 | *bp++ = 0; /* size of write */ | |
1357 | *bp++ = 0; | |
1358 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1359 | *bp++ = htonl((u32) attr->ia_size); | |
1360 | ||
1361 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1362 | } | |
1363 | ||
31143d5d DH |
1364 | /* |
1365 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1366 | * so as to alter the file size also | |
1367 | */ | |
1368 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1369 | struct afs_vnode *vnode, struct iattr *attr, | |
1370 | const struct afs_wait_mode *wait_mode) | |
1371 | { | |
1372 | struct afs_call *call; | |
1373 | __be32 *bp; | |
1374 | ||
1375 | _enter(",%x,{%x:%u},,", | |
1376 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1377 | ||
1378 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1379 | if (attr->ia_size >> 32) |
1380 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
1381 | wait_mode); | |
31143d5d DH |
1382 | |
1383 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1384 | (4 + 6 + 3) * 4, | |
1385 | (21 + 6) * 4); | |
1386 | if (!call) | |
1387 | return -ENOMEM; | |
1388 | ||
1389 | call->key = key; | |
1390 | call->reply = vnode; | |
1391 | call->service_id = FS_SERVICE; | |
1392 | call->port = htons(AFS_FS_PORT); | |
1393 | call->store_version = vnode->status.data_version + 1; | |
1394 | call->operation_ID = FSSTOREDATA; | |
1395 | ||
1396 | /* marshall the parameters */ | |
1397 | bp = call->request; | |
1398 | *bp++ = htonl(FSSTOREDATA); | |
1399 | *bp++ = htonl(vnode->fid.vid); | |
1400 | *bp++ = htonl(vnode->fid.vnode); | |
1401 | *bp++ = htonl(vnode->fid.unique); | |
1402 | ||
1403 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1404 | ||
1405 | *bp++ = 0; /* position of start of write */ | |
1406 | *bp++ = 0; /* size of write */ | |
1407 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1408 | ||
1409 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1410 | } | |
1411 | ||
1412 | /* | |
1413 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1414 | * size, and FS.StoreStatus otherwise | |
1415 | */ | |
1416 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1417 | struct afs_vnode *vnode, struct iattr *attr, | |
1418 | const struct afs_wait_mode *wait_mode) | |
1419 | { | |
1420 | struct afs_call *call; | |
1421 | __be32 *bp; | |
1422 | ||
1423 | if (attr->ia_valid & ATTR_SIZE) | |
1424 | return afs_fs_setattr_size(server, key, vnode, attr, | |
1425 | wait_mode); | |
1426 | ||
1427 | _enter(",%x,{%x:%u},,", | |
1428 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1429 | ||
1430 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1431 | (4 + 6) * 4, | |
1432 | (21 + 6) * 4); | |
1433 | if (!call) | |
1434 | return -ENOMEM; | |
1435 | ||
1436 | call->key = key; | |
1437 | call->reply = vnode; | |
1438 | call->service_id = FS_SERVICE; | |
1439 | call->port = htons(AFS_FS_PORT); | |
1440 | call->operation_ID = FSSTORESTATUS; | |
1441 | ||
1442 | /* marshall the parameters */ | |
1443 | bp = call->request; | |
1444 | *bp++ = htonl(FSSTORESTATUS); | |
1445 | *bp++ = htonl(vnode->fid.vid); | |
1446 | *bp++ = htonl(vnode->fid.vnode); | |
1447 | *bp++ = htonl(vnode->fid.unique); | |
1448 | ||
1449 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1450 | ||
1451 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
1452 | } |