1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* AFS File Server client stubs |
3 | * |
4 | * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
5 | * Written by David Howells (dhowells@redhat.com) |
6 | */ |
7 | |
8 | #include <linux/init.h> |
9 | #include <linux/slab.h> |
10 | #include <linux/sched.h> |
11 | #include <linux/circ_buf.h> |
12 | #include <linux/iversion.h> |
13 | #include <linux/netfs.h> |
14 | #include "internal.h" |
15 | #include "afs_fs.h" |
16 | #include "xdr_fs.h" |
17 | |
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 | |
31 | /* |
32 | * Dump a bad file status record. |
33 | */ |
34 | static void xdr_dump_bad(const __be32 *bp) |
35 | { |
36 | __be32 x[4]; |
37 | int i; |
38 | |
39 | pr_notice("AFS XDR: Bad status record\n" ); |
40 | for (i = 0; i < 5 * 4 * 4; i += 16) { |
41 | memcpy(x, bp, 16); |
42 | bp += 4; |
43 | pr_notice("%03x: %08x %08x %08x %08x\n" , |
44 | i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); |
45 | } |
46 | |
47 | memcpy(x, bp, 4); |
48 | pr_notice("0x50: %08x\n" , ntohl(x[0])); |
49 | } |
50 | |
51 | /* |
52 | * decode an AFSFetchStatus block |
53 | */ |
54 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
55 | struct afs_call *call, |
56 | struct afs_status_cb *scb) |
57 | { |
58 | const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp; |
59 | struct afs_file_status *status = &scb->status; |
60 | bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus); |
61 | u64 data_version, size; |
62 | u32 type, abort_code; |
63 | |
64 | abort_code = ntohl(xdr->abort_code); |
65 | |
66 | if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) { |
67 | if (xdr->if_version == htonl(0) && |
68 | abort_code != 0 && |
69 | inline_error) { |
70 | /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus |
71 | * whereby it doesn't set the interface version in the error |
72 | * case. |
73 | */ |
74 | status->abort_code = abort_code; |
75 | scb->have_error = true; |
76 | goto advance; |
77 | } |
78 | |
79 | pr_warn("Unknown AFSFetchStatus version %u\n" , ntohl(xdr->if_version)); |
80 | goto bad; |
81 | } |
82 | |
83 | if (abort_code != 0 && inline_error) { |
84 | status->abort_code = abort_code; |
85 | scb->have_error = true; |
86 | goto advance; |
87 | } |
88 | |
89 | type = ntohl(xdr->type); |
90 | switch (type) { |
91 | case AFS_FTYPE_FILE: |
92 | case AFS_FTYPE_DIR: |
93 | case AFS_FTYPE_SYMLINK: |
94 | status->type = type; |
95 | break; |
96 | default: |
97 | goto bad; |
98 | } |
99 | |
100 | status->nlink = ntohl(xdr->nlink); |
101 | status->author = ntohl(xdr->author); |
102 | status->owner = ntohl(xdr->owner); |
103 | status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ |
104 | status->anon_access = ntohl(xdr->anon_access); |
105 | status->mode = ntohl(xdr->mode) & S_IALLUGO; |
106 | status->group = ntohl(xdr->group); |
107 | status->lock_count = ntohl(xdr->lock_count); |
108 | |
109 | status->mtime_client.tv_sec = ntohl(xdr->mtime_client); |
110 | status->mtime_client.tv_nsec = 0; |
111 | status->mtime_server.tv_sec = ntohl(xdr->mtime_server); |
112 | status->mtime_server.tv_nsec = 0; |
113 | |
114 | size = (u64)ntohl(xdr->size_lo); |
115 | size |= (u64)ntohl(xdr->size_hi) << 32; |
116 | status->size = size; |
117 | |
118 | data_version = (u64)ntohl(xdr->data_version_lo); |
119 | data_version |= (u64)ntohl(xdr->data_version_hi) << 32; |
120 | status->data_version = data_version; |
121 | scb->have_status = true; |
122 | advance: |
123 | *_bp = (const void *)*_bp + sizeof(*xdr); |
124 | return; |
125 | |
126 | bad: |
127 | xdr_dump_bad(bp: *_bp); |
128 | afs_protocol_error(call, afs_eproto_bad_status); |
129 | goto advance; |
130 | } |
131 | |
132 | static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry) |
133 | { |
134 | return ktime_divns(kt: call->issue_time, NSEC_PER_SEC) + expiry; |
135 | } |
136 | |
137 | static void xdr_decode_AFSCallBack(const __be32 **_bp, |
138 | struct afs_call *call, |
139 | struct afs_status_cb *scb) |
140 | { |
141 | struct afs_callback *cb = &scb->callback; |
142 | const __be32 *bp = *_bp; |
143 | |
144 | bp++; /* version */ |
145 | cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++)); |
146 | bp++; /* type */ |
147 | scb->have_cb = true; |
148 | *_bp = bp; |
149 | } |
150 | |
151 | /* |
152 | * decode an AFSVolSync block |
153 | */ |
154 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
155 | struct afs_volsync *volsync) |
156 | { |
157 | const __be32 *bp = *_bp; |
158 | u32 creation; |
159 | |
160 | creation = ntohl(*bp++); |
161 | bp++; /* spare2 */ |
162 | bp++; /* spare3 */ |
163 | bp++; /* spare4 */ |
164 | bp++; /* spare5 */ |
165 | bp++; /* spare6 */ |
166 | *_bp = bp; |
167 | |
168 | if (volsync) |
169 | volsync->creation = creation; |
170 | } |
171 | |
172 | /* |
173 | * encode the requested attributes into an AFSStoreStatus block |
174 | */ |
175 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) |
176 | { |
177 | __be32 *bp = *_bp; |
178 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; |
179 | |
180 | mask = 0; |
181 | if (attr->ia_valid & ATTR_MTIME) { |
182 | mask |= AFS_SET_MTIME; |
183 | mtime = attr->ia_mtime.tv_sec; |
184 | } |
185 | |
186 | if (attr->ia_valid & ATTR_UID) { |
187 | mask |= AFS_SET_OWNER; |
188 | owner = from_kuid(to: &init_user_ns, uid: attr->ia_uid); |
189 | } |
190 | |
191 | if (attr->ia_valid & ATTR_GID) { |
192 | mask |= AFS_SET_GROUP; |
193 | group = from_kgid(to: &init_user_ns, gid: attr->ia_gid); |
194 | } |
195 | |
196 | if (attr->ia_valid & ATTR_MODE) { |
197 | mask |= AFS_SET_MODE; |
198 | mode = attr->ia_mode & S_IALLUGO; |
199 | } |
200 | |
201 | *bp++ = htonl(mask); |
202 | *bp++ = htonl(mtime); |
203 | *bp++ = htonl(owner); |
204 | *bp++ = htonl(group); |
205 | *bp++ = htonl(mode); |
206 | *bp++ = 0; /* segment size */ |
207 | *_bp = bp; |
208 | } |
209 | |
210 | /* |
211 | * decode an AFSFetchVolumeStatus block |
212 | */ |
213 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, |
214 | struct afs_volume_status *vs) |
215 | { |
216 | const __be32 *bp = *_bp; |
217 | |
218 | vs->vid = ntohl(*bp++); |
219 | vs->parent_id = ntohl(*bp++); |
220 | vs->online = ntohl(*bp++); |
221 | vs->in_service = ntohl(*bp++); |
222 | vs->blessed = ntohl(*bp++); |
223 | vs->needs_salvage = ntohl(*bp++); |
224 | vs->type = ntohl(*bp++); |
225 | vs->min_quota = ntohl(*bp++); |
226 | vs->max_quota = ntohl(*bp++); |
227 | vs->blocks_in_use = ntohl(*bp++); |
228 | vs->part_blocks_avail = ntohl(*bp++); |
229 | vs->part_max_blocks = ntohl(*bp++); |
230 | vs->vol_copy_date = 0; |
231 | vs->vol_backup_date = 0; |
232 | *_bp = bp; |
233 | } |
234 | |
235 | /* |
236 | * deliver reply data to an FS.FetchStatus |
237 | */ |
238 | static int afs_deliver_fs_fetch_status(struct afs_call *call) |
239 | { |
240 | struct afs_operation *op = call->op; |
241 | struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; |
242 | const __be32 *bp; |
243 | int ret; |
244 | |
245 | ret = afs_transfer_reply(call); |
246 | if (ret < 0) |
247 | return ret; |
248 | |
249 | /* unmarshall the reply once we've received all of it */ |
250 | bp = call->buffer; |
251 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
252 | xdr_decode_AFSCallBack(bp: &bp, call, scb: &vp->scb); |
253 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
254 | |
255 | _leave(" = 0 [done]" ); |
256 | return 0; |
257 | } |
258 | |
259 | /* |
260 | * FS.FetchStatus operation type |
261 | */ |
262 | static const struct afs_call_type afs_RXFSFetchStatus = { |
263 | .name = "FS.FetchStatus" , |
264 | .op = afs_FS_FetchStatus, |
265 | .deliver = afs_deliver_fs_fetch_status, |
266 | .destructor = afs_flat_call_destructor, |
267 | }; |
268 | |
269 | /* |
270 | * fetch the status information for a file |
271 | */ |
272 | void afs_fs_fetch_status(struct afs_operation *op) |
273 | { |
274 | struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; |
275 | struct afs_call *call; |
276 | __be32 *bp; |
277 | |
278 | _enter(",%x,{%llx:%llu},," , |
279 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
280 | |
281 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchStatus, |
282 | 16, (21 + 3 + 6) * 4); |
283 | if (!call) |
284 | return afs_op_nomem(op); |
285 | |
286 | /* marshall the parameters */ |
287 | bp = call->request; |
288 | bp[0] = htonl(FSFETCHSTATUS); |
289 | bp[1] = htonl(vp->fid.vid); |
290 | bp[2] = htonl(vp->fid.vnode); |
291 | bp[3] = htonl(vp->fid.unique); |
292 | |
293 | trace_afs_make_fs_call(call, fid: &vp->fid); |
294 | afs_make_op_call(op, call, GFP_NOFS); |
295 | } |
296 | |
297 | /* |
298 | * deliver reply data to an FS.FetchData |
299 | */ |
300 | static int afs_deliver_fs_fetch_data(struct afs_call *call) |
301 | { |
302 | struct afs_operation *op = call->op; |
303 | struct afs_vnode_param *vp = &op->file[0]; |
304 | struct afs_read *req = op->fetch.req; |
305 | const __be32 *bp; |
306 | int ret; |
307 | |
308 | _enter("{%u,%zu,%zu/%llu}" , |
309 | call->unmarshall, call->iov_len, iov_iter_count(call->iter), |
310 | req->actual_len); |
311 | |
312 | switch (call->unmarshall) { |
313 | case 0: |
314 | req->actual_len = 0; |
315 | call->unmarshall++; |
316 | if (call->operation_ID == FSFETCHDATA64) { |
317 | afs_extract_to_tmp64(call); |
318 | } else { |
319 | call->tmp_u = htonl(0); |
320 | afs_extract_to_tmp(call); |
321 | } |
322 | fallthrough; |
323 | |
324 | /* Extract the returned data length into |
325 | * ->actual_len. This may indicate more or less data than was |
326 | * requested will be returned. |
327 | */ |
328 | case 1: |
329 | _debug("extract data length" ); |
330 | ret = afs_extract_data(call, true); |
331 | if (ret < 0) |
332 | return ret; |
333 | |
334 | req->actual_len = be64_to_cpu(call->tmp64); |
335 | _debug("DATA length: %llu" , req->actual_len); |
336 | |
337 | if (req->actual_len == 0) |
338 | goto no_more_data; |
339 | |
340 | call->iter = req->iter; |
341 | call->iov_len = min(req->actual_len, req->len); |
342 | call->unmarshall++; |
343 | fallthrough; |
344 | |
345 | /* extract the returned data */ |
346 | case 2: |
347 | _debug("extract data %zu/%llu" , |
348 | iov_iter_count(call->iter), req->actual_len); |
349 | |
350 | ret = afs_extract_data(call, true); |
351 | if (ret < 0) |
352 | return ret; |
353 | |
354 | call->iter = &call->def_iter; |
355 | if (req->actual_len <= req->len) |
356 | goto no_more_data; |
357 | |
358 | /* Discard any excess data the server gave us */ |
359 | afs_extract_discard(call, size: req->actual_len - req->len); |
360 | call->unmarshall = 3; |
361 | fallthrough; |
362 | |
363 | case 3: |
364 | _debug("extract discard %zu/%llu" , |
365 | iov_iter_count(call->iter), req->actual_len - req->len); |
366 | |
367 | ret = afs_extract_data(call, true); |
368 | if (ret < 0) |
369 | return ret; |
370 | |
371 | no_more_data: |
372 | call->unmarshall = 4; |
373 | afs_extract_to_buf(call, size: (21 + 3 + 6) * 4); |
374 | fallthrough; |
375 | |
376 | /* extract the metadata */ |
377 | case 4: |
378 | ret = afs_extract_data(call, false); |
379 | if (ret < 0) |
380 | return ret; |
381 | |
382 | bp = call->buffer; |
383 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
384 | xdr_decode_AFSCallBack(bp: &bp, call, scb: &vp->scb); |
385 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
386 | |
387 | req->data_version = vp->scb.status.data_version; |
388 | req->file_size = vp->scb.status.size; |
389 | |
390 | call->unmarshall++; |
391 | fallthrough; |
392 | |
393 | case 5: |
394 | break; |
395 | } |
396 | |
397 | _leave(" = 0 [done]" ); |
398 | return 0; |
399 | } |
400 | |
401 | /* |
402 | * FS.FetchData operation type |
403 | */ |
404 | static const struct afs_call_type afs_RXFSFetchData = { |
405 | .name = "FS.FetchData" , |
406 | .op = afs_FS_FetchData, |
407 | .deliver = afs_deliver_fs_fetch_data, |
408 | .destructor = afs_flat_call_destructor, |
409 | }; |
410 | |
411 | static const struct afs_call_type afs_RXFSFetchData64 = { |
412 | .name = "FS.FetchData64" , |
413 | .op = afs_FS_FetchData64, |
414 | .deliver = afs_deliver_fs_fetch_data, |
415 | .destructor = afs_flat_call_destructor, |
416 | }; |
417 | |
418 | /* |
419 | * fetch data from a very large file |
420 | */ |
421 | static void afs_fs_fetch_data64(struct afs_operation *op) |
422 | { |
423 | struct afs_vnode_param *vp = &op->file[0]; |
424 | struct afs_read *req = op->fetch.req; |
425 | struct afs_call *call; |
426 | __be32 *bp; |
427 | |
428 | _enter("" ); |
429 | |
430 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
431 | if (!call) |
432 | return afs_op_nomem(op); |
433 | |
434 | /* marshall the parameters */ |
435 | bp = call->request; |
436 | bp[0] = htonl(FSFETCHDATA64); |
437 | bp[1] = htonl(vp->fid.vid); |
438 | bp[2] = htonl(vp->fid.vnode); |
439 | bp[3] = htonl(vp->fid.unique); |
440 | bp[4] = htonl(upper_32_bits(req->pos)); |
441 | bp[5] = htonl(lower_32_bits(req->pos)); |
442 | bp[6] = 0; |
443 | bp[7] = htonl(lower_32_bits(req->len)); |
444 | |
445 | trace_afs_make_fs_call(call, fid: &vp->fid); |
446 | afs_make_op_call(op, call, GFP_NOFS); |
447 | } |
448 | |
449 | /* |
450 | * fetch data from a file |
451 | */ |
452 | void afs_fs_fetch_data(struct afs_operation *op) |
453 | { |
454 | struct afs_vnode_param *vp = &op->file[0]; |
455 | struct afs_call *call; |
456 | struct afs_read *req = op->fetch.req; |
457 | __be32 *bp; |
458 | |
459 | if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) |
460 | return afs_fs_fetch_data64(op); |
461 | |
462 | _enter("" ); |
463 | |
464 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
465 | if (!call) |
466 | return afs_op_nomem(op); |
467 | |
468 | req->call_debug_id = call->debug_id; |
469 | |
470 | /* marshall the parameters */ |
471 | bp = call->request; |
472 | bp[0] = htonl(FSFETCHDATA); |
473 | bp[1] = htonl(vp->fid.vid); |
474 | bp[2] = htonl(vp->fid.vnode); |
475 | bp[3] = htonl(vp->fid.unique); |
476 | bp[4] = htonl(lower_32_bits(req->pos)); |
477 | bp[5] = htonl(lower_32_bits(req->len)); |
478 | |
479 | trace_afs_make_fs_call(call, fid: &vp->fid); |
480 | afs_make_op_call(op, call, GFP_NOFS); |
481 | } |
482 | |
483 | /* |
484 | * deliver reply data to an FS.CreateFile or an FS.MakeDir |
485 | */ |
486 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
487 | { |
488 | struct afs_operation *op = call->op; |
489 | struct afs_vnode_param *dvp = &op->file[0]; |
490 | struct afs_vnode_param *vp = &op->file[1]; |
491 | const __be32 *bp; |
492 | int ret; |
493 | |
494 | ret = afs_transfer_reply(call); |
495 | if (ret < 0) |
496 | return ret; |
497 | |
498 | /* unmarshall the reply once we've received all of it */ |
499 | bp = call->buffer; |
500 | xdr_decode_AFSFid(bp: &bp, fid: &op->file[1].fid); |
501 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
502 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
503 | xdr_decode_AFSCallBack(bp: &bp, call, scb: &vp->scb); |
504 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
505 | |
506 | _leave(" = 0 [done]" ); |
507 | return 0; |
508 | } |
509 | |
510 | /* |
511 | * FS.CreateFile and FS.MakeDir operation type |
512 | */ |
513 | static const struct afs_call_type afs_RXFSCreateFile = { |
514 | .name = "FS.CreateFile" , |
515 | .op = afs_FS_CreateFile, |
516 | .deliver = afs_deliver_fs_create_vnode, |
517 | .destructor = afs_flat_call_destructor, |
518 | }; |
519 | |
520 | /* |
521 | * Create a file. |
522 | */ |
523 | void afs_fs_create_file(struct afs_operation *op) |
524 | { |
525 | const struct qstr *name = &op->dentry->d_name; |
526 | struct afs_vnode_param *dvp = &op->file[0]; |
527 | struct afs_call *call; |
528 | size_t namesz, reqsz, padsz; |
529 | __be32 *bp; |
530 | |
531 | _enter("" ); |
532 | |
533 | namesz = name->len; |
534 | padsz = (4 - (namesz & 3)) & 3; |
535 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); |
536 | |
537 | call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, |
538 | reqsz, (3 + 21 + 21 + 3 + 6) * 4); |
539 | if (!call) |
540 | return afs_op_nomem(op); |
541 | |
542 | /* marshall the parameters */ |
543 | bp = call->request; |
544 | *bp++ = htonl(FSCREATEFILE); |
545 | *bp++ = htonl(dvp->fid.vid); |
546 | *bp++ = htonl(dvp->fid.vnode); |
547 | *bp++ = htonl(dvp->fid.unique); |
548 | *bp++ = htonl(namesz); |
549 | memcpy(bp, name->name, namesz); |
550 | bp = (void *) bp + namesz; |
551 | if (padsz > 0) { |
552 | memset(bp, 0, padsz); |
553 | bp = (void *) bp + padsz; |
554 | } |
555 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
556 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
557 | *bp++ = 0; /* owner */ |
558 | *bp++ = 0; /* group */ |
559 | *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */ |
560 | *bp++ = 0; /* segment size */ |
561 | |
562 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
563 | afs_make_op_call(op, call, GFP_NOFS); |
564 | } |
565 | |
566 | static const struct afs_call_type afs_RXFSMakeDir = { |
567 | .name = "FS.MakeDir" , |
568 | .op = afs_FS_MakeDir, |
569 | .deliver = afs_deliver_fs_create_vnode, |
570 | .destructor = afs_flat_call_destructor, |
571 | }; |
572 | |
573 | /* |
574 | * Create a new directory |
575 | */ |
576 | void afs_fs_make_dir(struct afs_operation *op) |
577 | { |
578 | const struct qstr *name = &op->dentry->d_name; |
579 | struct afs_vnode_param *dvp = &op->file[0]; |
580 | struct afs_call *call; |
581 | size_t namesz, reqsz, padsz; |
582 | __be32 *bp; |
583 | |
584 | _enter("" ); |
585 | |
586 | namesz = name->len; |
587 | padsz = (4 - (namesz & 3)) & 3; |
588 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); |
589 | |
590 | call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir, |
591 | reqsz, (3 + 21 + 21 + 3 + 6) * 4); |
592 | if (!call) |
593 | return afs_op_nomem(op); |
594 | |
595 | /* marshall the parameters */ |
596 | bp = call->request; |
597 | *bp++ = htonl(FSMAKEDIR); |
598 | *bp++ = htonl(dvp->fid.vid); |
599 | *bp++ = htonl(dvp->fid.vnode); |
600 | *bp++ = htonl(dvp->fid.unique); |
601 | *bp++ = htonl(namesz); |
602 | memcpy(bp, name->name, namesz); |
603 | bp = (void *) bp + namesz; |
604 | if (padsz > 0) { |
605 | memset(bp, 0, padsz); |
606 | bp = (void *) bp + padsz; |
607 | } |
608 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
609 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
610 | *bp++ = 0; /* owner */ |
611 | *bp++ = 0; /* group */ |
612 | *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */ |
613 | *bp++ = 0; /* segment size */ |
614 | |
615 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
616 | afs_make_op_call(op, call, GFP_NOFS); |
617 | } |
618 | |
619 | /* |
620 | * Deliver reply data to any operation that returns status and volume sync. |
621 | */ |
622 | static int afs_deliver_fs_file_status_and_vol(struct afs_call *call) |
623 | { |
624 | struct afs_operation *op = call->op; |
625 | struct afs_vnode_param *vp = &op->file[0]; |
626 | const __be32 *bp; |
627 | int ret; |
628 | |
629 | ret = afs_transfer_reply(call); |
630 | if (ret < 0) |
631 | return ret; |
632 | |
633 | /* unmarshall the reply once we've received all of it */ |
634 | bp = call->buffer; |
635 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
636 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
637 | |
638 | _leave(" = 0 [done]" ); |
639 | return 0; |
640 | } |
641 | |
642 | /* |
643 | * FS.RemoveFile operation type |
644 | */ |
645 | static const struct afs_call_type afs_RXFSRemoveFile = { |
646 | .name = "FS.RemoveFile" , |
647 | .op = afs_FS_RemoveFile, |
648 | .deliver = afs_deliver_fs_file_status_and_vol, |
649 | .destructor = afs_flat_call_destructor, |
650 | }; |
651 | |
652 | /* |
653 | * Remove a file. |
654 | */ |
655 | void afs_fs_remove_file(struct afs_operation *op) |
656 | { |
657 | const struct qstr *name = &op->dentry->d_name; |
658 | struct afs_vnode_param *dvp = &op->file[0]; |
659 | struct afs_call *call; |
660 | size_t namesz, reqsz, padsz; |
661 | __be32 *bp; |
662 | |
663 | _enter("" ); |
664 | |
665 | namesz = name->len; |
666 | padsz = (4 - (namesz & 3)) & 3; |
667 | reqsz = (5 * 4) + namesz + padsz; |
668 | |
669 | call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile, |
670 | reqsz, (21 + 6) * 4); |
671 | if (!call) |
672 | return afs_op_nomem(op); |
673 | |
674 | /* marshall the parameters */ |
675 | bp = call->request; |
676 | *bp++ = htonl(FSREMOVEFILE); |
677 | *bp++ = htonl(dvp->fid.vid); |
678 | *bp++ = htonl(dvp->fid.vnode); |
679 | *bp++ = htonl(dvp->fid.unique); |
680 | *bp++ = htonl(namesz); |
681 | memcpy(bp, name->name, namesz); |
682 | bp = (void *) bp + namesz; |
683 | if (padsz > 0) { |
684 | memset(bp, 0, padsz); |
685 | bp = (void *) bp + padsz; |
686 | } |
687 | |
688 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
689 | afs_make_op_call(op, call, GFP_NOFS); |
690 | } |
691 | |
692 | static const struct afs_call_type afs_RXFSRemoveDir = { |
693 | .name = "FS.RemoveDir" , |
694 | .op = afs_FS_RemoveDir, |
695 | .deliver = afs_deliver_fs_file_status_and_vol, |
696 | .destructor = afs_flat_call_destructor, |
697 | }; |
698 | |
699 | /* |
700 | * Remove a directory. |
701 | */ |
702 | void afs_fs_remove_dir(struct afs_operation *op) |
703 | { |
704 | const struct qstr *name = &op->dentry->d_name; |
705 | struct afs_vnode_param *dvp = &op->file[0]; |
706 | struct afs_call *call; |
707 | size_t namesz, reqsz, padsz; |
708 | __be32 *bp; |
709 | |
710 | _enter("" ); |
711 | |
712 | namesz = name->len; |
713 | padsz = (4 - (namesz & 3)) & 3; |
714 | reqsz = (5 * 4) + namesz + padsz; |
715 | |
716 | call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir, |
717 | reqsz, (21 + 6) * 4); |
718 | if (!call) |
719 | return afs_op_nomem(op); |
720 | |
721 | /* marshall the parameters */ |
722 | bp = call->request; |
723 | *bp++ = htonl(FSREMOVEDIR); |
724 | *bp++ = htonl(dvp->fid.vid); |
725 | *bp++ = htonl(dvp->fid.vnode); |
726 | *bp++ = htonl(dvp->fid.unique); |
727 | *bp++ = htonl(namesz); |
728 | memcpy(bp, name->name, namesz); |
729 | bp = (void *) bp + namesz; |
730 | if (padsz > 0) { |
731 | memset(bp, 0, padsz); |
732 | bp = (void *) bp + padsz; |
733 | } |
734 | |
735 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
736 | afs_make_op_call(op, call, GFP_NOFS); |
737 | } |
738 | |
739 | /* |
740 | * deliver reply data to an FS.Link |
741 | */ |
742 | static int afs_deliver_fs_link(struct afs_call *call) |
743 | { |
744 | struct afs_operation *op = call->op; |
745 | struct afs_vnode_param *dvp = &op->file[0]; |
746 | struct afs_vnode_param *vp = &op->file[1]; |
747 | const __be32 *bp; |
748 | int ret; |
749 | |
750 | _enter("{%u}" , call->unmarshall); |
751 | |
752 | ret = afs_transfer_reply(call); |
753 | if (ret < 0) |
754 | return ret; |
755 | |
756 | /* unmarshall the reply once we've received all of it */ |
757 | bp = call->buffer; |
758 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
759 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
760 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
761 | |
762 | _leave(" = 0 [done]" ); |
763 | return 0; |
764 | } |
765 | |
766 | /* |
767 | * FS.Link operation type |
768 | */ |
769 | static const struct afs_call_type afs_RXFSLink = { |
770 | .name = "FS.Link" , |
771 | .op = afs_FS_Link, |
772 | .deliver = afs_deliver_fs_link, |
773 | .destructor = afs_flat_call_destructor, |
774 | }; |
775 | |
776 | /* |
777 | * make a hard link |
778 | */ |
779 | void afs_fs_link(struct afs_operation *op) |
780 | { |
781 | const struct qstr *name = &op->dentry->d_name; |
782 | struct afs_vnode_param *dvp = &op->file[0]; |
783 | struct afs_vnode_param *vp = &op->file[1]; |
784 | struct afs_call *call; |
785 | size_t namesz, reqsz, padsz; |
786 | __be32 *bp; |
787 | |
788 | _enter("" ); |
789 | |
790 | namesz = name->len; |
791 | padsz = (4 - (namesz & 3)) & 3; |
792 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); |
793 | |
794 | call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); |
795 | if (!call) |
796 | return afs_op_nomem(op); |
797 | |
798 | /* marshall the parameters */ |
799 | bp = call->request; |
800 | *bp++ = htonl(FSLINK); |
801 | *bp++ = htonl(dvp->fid.vid); |
802 | *bp++ = htonl(dvp->fid.vnode); |
803 | *bp++ = htonl(dvp->fid.unique); |
804 | *bp++ = htonl(namesz); |
805 | memcpy(bp, name->name, namesz); |
806 | bp = (void *) bp + namesz; |
807 | if (padsz > 0) { |
808 | memset(bp, 0, padsz); |
809 | bp = (void *) bp + padsz; |
810 | } |
811 | *bp++ = htonl(vp->fid.vid); |
812 | *bp++ = htonl(vp->fid.vnode); |
813 | *bp++ = htonl(vp->fid.unique); |
814 | |
815 | trace_afs_make_fs_call1(call, fid: &vp->fid, name); |
816 | afs_make_op_call(op, call, GFP_NOFS); |
817 | } |
818 | |
819 | /* |
820 | * deliver reply data to an FS.Symlink |
821 | */ |
822 | static int afs_deliver_fs_symlink(struct afs_call *call) |
823 | { |
824 | struct afs_operation *op = call->op; |
825 | struct afs_vnode_param *dvp = &op->file[0]; |
826 | struct afs_vnode_param *vp = &op->file[1]; |
827 | const __be32 *bp; |
828 | int ret; |
829 | |
830 | _enter("{%u}" , call->unmarshall); |
831 | |
832 | ret = afs_transfer_reply(call); |
833 | if (ret < 0) |
834 | return ret; |
835 | |
836 | /* unmarshall the reply once we've received all of it */ |
837 | bp = call->buffer; |
838 | xdr_decode_AFSFid(bp: &bp, fid: &vp->fid); |
839 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
840 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
841 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
842 | |
843 | _leave(" = 0 [done]" ); |
844 | return 0; |
845 | } |
846 | |
847 | /* |
848 | * FS.Symlink operation type |
849 | */ |
850 | static const struct afs_call_type afs_RXFSSymlink = { |
851 | .name = "FS.Symlink" , |
852 | .op = afs_FS_Symlink, |
853 | .deliver = afs_deliver_fs_symlink, |
854 | .destructor = afs_flat_call_destructor, |
855 | }; |
856 | |
857 | /* |
858 | * create a symbolic link |
859 | */ |
860 | void afs_fs_symlink(struct afs_operation *op) |
861 | { |
862 | const struct qstr *name = &op->dentry->d_name; |
863 | struct afs_vnode_param *dvp = &op->file[0]; |
864 | struct afs_call *call; |
865 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; |
866 | __be32 *bp; |
867 | |
868 | _enter("" ); |
869 | |
870 | namesz = name->len; |
871 | padsz = (4 - (namesz & 3)) & 3; |
872 | |
873 | c_namesz = strlen(op->create.symlink); |
874 | c_padsz = (4 - (c_namesz & 3)) & 3; |
875 | |
876 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); |
877 | |
878 | call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz, |
879 | (3 + 21 + 21 + 6) * 4); |
880 | if (!call) |
881 | return afs_op_nomem(op); |
882 | |
883 | /* marshall the parameters */ |
884 | bp = call->request; |
885 | *bp++ = htonl(FSSYMLINK); |
886 | *bp++ = htonl(dvp->fid.vid); |
887 | *bp++ = htonl(dvp->fid.vnode); |
888 | *bp++ = htonl(dvp->fid.unique); |
889 | *bp++ = htonl(namesz); |
890 | memcpy(bp, name->name, namesz); |
891 | bp = (void *) bp + namesz; |
892 | if (padsz > 0) { |
893 | memset(bp, 0, padsz); |
894 | bp = (void *) bp + padsz; |
895 | } |
896 | *bp++ = htonl(c_namesz); |
897 | memcpy(bp, op->create.symlink, c_namesz); |
898 | bp = (void *) bp + c_namesz; |
899 | if (c_padsz > 0) { |
900 | memset(bp, 0, c_padsz); |
901 | bp = (void *) bp + c_padsz; |
902 | } |
903 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
904 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
905 | *bp++ = 0; /* owner */ |
906 | *bp++ = 0; /* group */ |
907 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ |
908 | *bp++ = 0; /* segment size */ |
909 | |
910 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
911 | afs_make_op_call(op, call, GFP_NOFS); |
912 | } |
913 | |
914 | /* |
915 | * deliver reply data to an FS.Rename |
916 | */ |
917 | static int afs_deliver_fs_rename(struct afs_call *call) |
918 | { |
919 | struct afs_operation *op = call->op; |
920 | struct afs_vnode_param *orig_dvp = &op->file[0]; |
921 | struct afs_vnode_param *new_dvp = &op->file[1]; |
922 | const __be32 *bp; |
923 | int ret; |
924 | |
925 | ret = afs_transfer_reply(call); |
926 | if (ret < 0) |
927 | return ret; |
928 | |
929 | bp = call->buffer; |
930 | /* If the two dirs are the same, we have two copies of the same status |
931 | * report, so we just decode it twice. |
932 | */ |
933 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &orig_dvp->scb); |
934 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &new_dvp->scb); |
935 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
936 | |
937 | _leave(" = 0 [done]" ); |
938 | return 0; |
939 | } |
940 | |
941 | /* |
942 | * FS.Rename operation type |
943 | */ |
944 | static const struct afs_call_type afs_RXFSRename = { |
945 | .name = "FS.Rename" , |
946 | .op = afs_FS_Rename, |
947 | .deliver = afs_deliver_fs_rename, |
948 | .destructor = afs_flat_call_destructor, |
949 | }; |
950 | |
951 | /* |
952 | * Rename/move a file or directory. |
953 | */ |
954 | void afs_fs_rename(struct afs_operation *op) |
955 | { |
956 | struct afs_vnode_param *orig_dvp = &op->file[0]; |
957 | struct afs_vnode_param *new_dvp = &op->file[1]; |
958 | const struct qstr *orig_name = &op->dentry->d_name; |
959 | const struct qstr *new_name = &op->dentry_2->d_name; |
960 | struct afs_call *call; |
961 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; |
962 | __be32 *bp; |
963 | |
964 | _enter("" ); |
965 | |
966 | o_namesz = orig_name->len; |
967 | o_padsz = (4 - (o_namesz & 3)) & 3; |
968 | |
969 | n_namesz = new_name->len; |
970 | n_padsz = (4 - (n_namesz & 3)) & 3; |
971 | |
972 | reqsz = (4 * 4) + |
973 | 4 + o_namesz + o_padsz + |
974 | (3 * 4) + |
975 | 4 + n_namesz + n_padsz; |
976 | |
977 | call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); |
978 | if (!call) |
979 | return afs_op_nomem(op); |
980 | |
981 | /* marshall the parameters */ |
982 | bp = call->request; |
983 | *bp++ = htonl(FSRENAME); |
984 | *bp++ = htonl(orig_dvp->fid.vid); |
985 | *bp++ = htonl(orig_dvp->fid.vnode); |
986 | *bp++ = htonl(orig_dvp->fid.unique); |
987 | *bp++ = htonl(o_namesz); |
988 | memcpy(bp, orig_name->name, o_namesz); |
989 | bp = (void *) bp + o_namesz; |
990 | if (o_padsz > 0) { |
991 | memset(bp, 0, o_padsz); |
992 | bp = (void *) bp + o_padsz; |
993 | } |
994 | |
995 | *bp++ = htonl(new_dvp->fid.vid); |
996 | *bp++ = htonl(new_dvp->fid.vnode); |
997 | *bp++ = htonl(new_dvp->fid.unique); |
998 | *bp++ = htonl(n_namesz); |
999 | memcpy(bp, new_name->name, n_namesz); |
1000 | bp = (void *) bp + n_namesz; |
1001 | if (n_padsz > 0) { |
1002 | memset(bp, 0, n_padsz); |
1003 | bp = (void *) bp + n_padsz; |
1004 | } |
1005 | |
1006 | trace_afs_make_fs_call2(call, fid: &orig_dvp->fid, name: orig_name, name2: new_name); |
1007 | afs_make_op_call(op, call, GFP_NOFS); |
1008 | } |
1009 | |
1010 | /* |
1011 | * Deliver reply data to FS.StoreData or FS.StoreStatus |
1012 | */ |
1013 | static int afs_deliver_fs_store_data(struct afs_call *call) |
1014 | { |
1015 | struct afs_operation *op = call->op; |
1016 | struct afs_vnode_param *vp = &op->file[0]; |
1017 | const __be32 *bp; |
1018 | int ret; |
1019 | |
1020 | _enter("" ); |
1021 | |
1022 | ret = afs_transfer_reply(call); |
1023 | if (ret < 0) |
1024 | return ret; |
1025 | |
1026 | /* unmarshall the reply once we've received all of it */ |
1027 | bp = call->buffer; |
1028 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
1029 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
1030 | |
1031 | _leave(" = 0 [done]" ); |
1032 | return 0; |
1033 | } |
1034 | |
1035 | /* |
1036 | * FS.StoreData operation type |
1037 | */ |
1038 | static const struct afs_call_type afs_RXFSStoreData = { |
1039 | .name = "FS.StoreData" , |
1040 | .op = afs_FS_StoreData, |
1041 | .deliver = afs_deliver_fs_store_data, |
1042 | .destructor = afs_flat_call_destructor, |
1043 | }; |
1044 | |
1045 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1046 | .name = "FS.StoreData64" , |
1047 | .op = afs_FS_StoreData64, |
1048 | .deliver = afs_deliver_fs_store_data, |
1049 | .destructor = afs_flat_call_destructor, |
1050 | }; |
1051 | |
1052 | /* |
1053 | * store a set of pages to a very large file |
1054 | */ |
1055 | static void afs_fs_store_data64(struct afs_operation *op) |
1056 | { |
1057 | struct afs_vnode_param *vp = &op->file[0]; |
1058 | struct afs_call *call; |
1059 | __be32 *bp; |
1060 | |
1061 | _enter(",%x,{%llx:%llu},," , |
1062 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1063 | |
1064 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64, |
1065 | (4 + 6 + 3 * 2) * 4, |
1066 | (21 + 6) * 4); |
1067 | if (!call) |
1068 | return afs_op_nomem(op); |
1069 | |
1070 | call->write_iter = op->store.write_iter; |
1071 | |
1072 | /* marshall the parameters */ |
1073 | bp = call->request; |
1074 | *bp++ = htonl(FSSTOREDATA64); |
1075 | *bp++ = htonl(vp->fid.vid); |
1076 | *bp++ = htonl(vp->fid.vnode); |
1077 | *bp++ = htonl(vp->fid.unique); |
1078 | |
1079 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1080 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
1081 | *bp++ = 0; /* owner */ |
1082 | *bp++ = 0; /* group */ |
1083 | *bp++ = 0; /* unix mode */ |
1084 | *bp++ = 0; /* segment size */ |
1085 | |
1086 | *bp++ = htonl(upper_32_bits(op->store.pos)); |
1087 | *bp++ = htonl(lower_32_bits(op->store.pos)); |
1088 | *bp++ = htonl(upper_32_bits(op->store.size)); |
1089 | *bp++ = htonl(lower_32_bits(op->store.size)); |
1090 | *bp++ = htonl(upper_32_bits(op->store.i_size)); |
1091 | *bp++ = htonl(lower_32_bits(op->store.i_size)); |
1092 | |
1093 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1094 | afs_make_op_call(op, call, GFP_NOFS); |
1095 | } |
1096 | |
1097 | /* |
1098 | * Write data to a file on the server. |
1099 | */ |
1100 | void afs_fs_store_data(struct afs_operation *op) |
1101 | { |
1102 | struct afs_vnode_param *vp = &op->file[0]; |
1103 | struct afs_call *call; |
1104 | __be32 *bp; |
1105 | |
1106 | _enter(",%x,{%llx:%llu},," , |
1107 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1108 | |
1109 | _debug("size %llx, at %llx, i_size %llx" , |
1110 | (unsigned long long)op->store.size, |
1111 | (unsigned long long)op->store.pos, |
1112 | (unsigned long long)op->store.i_size); |
1113 | |
1114 | if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) |
1115 | return afs_fs_store_data64(op); |
1116 | |
1117 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData, |
1118 | (4 + 6 + 3) * 4, |
1119 | (21 + 6) * 4); |
1120 | if (!call) |
1121 | return afs_op_nomem(op); |
1122 | |
1123 | call->write_iter = op->store.write_iter; |
1124 | |
1125 | /* marshall the parameters */ |
1126 | bp = call->request; |
1127 | *bp++ = htonl(FSSTOREDATA); |
1128 | *bp++ = htonl(vp->fid.vid); |
1129 | *bp++ = htonl(vp->fid.vnode); |
1130 | *bp++ = htonl(vp->fid.unique); |
1131 | |
1132 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1133 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
1134 | *bp++ = 0; /* owner */ |
1135 | *bp++ = 0; /* group */ |
1136 | *bp++ = 0; /* unix mode */ |
1137 | *bp++ = 0; /* segment size */ |
1138 | |
1139 | *bp++ = htonl(lower_32_bits(op->store.pos)); |
1140 | *bp++ = htonl(lower_32_bits(op->store.size)); |
1141 | *bp++ = htonl(lower_32_bits(op->store.i_size)); |
1142 | |
1143 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1144 | afs_make_op_call(op, call, GFP_NOFS); |
1145 | } |
1146 | |
1147 | /* |
1148 | * FS.StoreStatus operation type |
1149 | */ |
1150 | static const struct afs_call_type afs_RXFSStoreStatus = { |
1151 | .name = "FS.StoreStatus" , |
1152 | .op = afs_FS_StoreStatus, |
1153 | .deliver = afs_deliver_fs_store_data, |
1154 | .destructor = afs_flat_call_destructor, |
1155 | }; |
1156 | |
1157 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { |
1158 | .name = "FS.StoreData" , |
1159 | .op = afs_FS_StoreData, |
1160 | .deliver = afs_deliver_fs_store_data, |
1161 | .destructor = afs_flat_call_destructor, |
1162 | }; |
1163 | |
1164 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1165 | .name = "FS.StoreData64" , |
1166 | .op = afs_FS_StoreData64, |
1167 | .deliver = afs_deliver_fs_store_data, |
1168 | .destructor = afs_flat_call_destructor, |
1169 | }; |
1170 | |
1171 | /* |
1172 | * set the attributes on a very large file, using FS.StoreData rather than |
1173 | * FS.StoreStatus so as to alter the file size also |
1174 | */ |
1175 | static void afs_fs_setattr_size64(struct afs_operation *op) |
1176 | { |
1177 | struct afs_vnode_param *vp = &op->file[0]; |
1178 | struct afs_call *call; |
1179 | struct iattr *attr = op->setattr.attr; |
1180 | __be32 *bp; |
1181 | |
1182 | _enter(",%x,{%llx:%llu},," , |
1183 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1184 | |
1185 | ASSERT(attr->ia_valid & ATTR_SIZE); |
1186 | |
1187 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status, |
1188 | (4 + 6 + 3 * 2) * 4, |
1189 | (21 + 6) * 4); |
1190 | if (!call) |
1191 | return afs_op_nomem(op); |
1192 | |
1193 | /* marshall the parameters */ |
1194 | bp = call->request; |
1195 | *bp++ = htonl(FSSTOREDATA64); |
1196 | *bp++ = htonl(vp->fid.vid); |
1197 | *bp++ = htonl(vp->fid.vnode); |
1198 | *bp++ = htonl(vp->fid.unique); |
1199 | |
1200 | xdr_encode_AFS_StoreStatus(bp: &bp, attr); |
1201 | |
1202 | *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */ |
1203 | *bp++ = htonl(lower_32_bits(attr->ia_size)); |
1204 | *bp++ = 0; /* size of write */ |
1205 | *bp++ = 0; |
1206 | *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */ |
1207 | *bp++ = htonl(lower_32_bits(attr->ia_size)); |
1208 | |
1209 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1210 | afs_make_op_call(op, call, GFP_NOFS); |
1211 | } |
1212 | |
1213 | /* |
1214 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus |
1215 | * so as to alter the file size also |
1216 | */ |
1217 | static void afs_fs_setattr_size(struct afs_operation *op) |
1218 | { |
1219 | struct afs_vnode_param *vp = &op->file[0]; |
1220 | struct afs_call *call; |
1221 | struct iattr *attr = op->setattr.attr; |
1222 | __be32 *bp; |
1223 | |
1224 | _enter(",%x,{%llx:%llu},," , |
1225 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1226 | |
1227 | ASSERT(attr->ia_valid & ATTR_SIZE); |
1228 | if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) |
1229 | return afs_fs_setattr_size64(op); |
1230 | |
1231 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status, |
1232 | (4 + 6 + 3) * 4, |
1233 | (21 + 6) * 4); |
1234 | if (!call) |
1235 | return afs_op_nomem(op); |
1236 | |
1237 | /* marshall the parameters */ |
1238 | bp = call->request; |
1239 | *bp++ = htonl(FSSTOREDATA); |
1240 | *bp++ = htonl(vp->fid.vid); |
1241 | *bp++ = htonl(vp->fid.vnode); |
1242 | *bp++ = htonl(vp->fid.unique); |
1243 | |
1244 | xdr_encode_AFS_StoreStatus(bp: &bp, attr); |
1245 | |
1246 | *bp++ = htonl(attr->ia_size); /* position of start of write */ |
1247 | *bp++ = 0; /* size of write */ |
1248 | *bp++ = htonl(attr->ia_size); /* new file length */ |
1249 | |
1250 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1251 | afs_make_op_call(op, call, GFP_NOFS); |
1252 | } |
1253 | |
1254 | /* |
1255 | * set the attributes on a file, using FS.StoreData if there's a change in file |
1256 | * size, and FS.StoreStatus otherwise |
1257 | */ |
1258 | void afs_fs_setattr(struct afs_operation *op) |
1259 | { |
1260 | struct afs_vnode_param *vp = &op->file[0]; |
1261 | struct afs_call *call; |
1262 | struct iattr *attr = op->setattr.attr; |
1263 | __be32 *bp; |
1264 | |
1265 | if (attr->ia_valid & ATTR_SIZE) |
1266 | return afs_fs_setattr_size(op); |
1267 | |
1268 | _enter(",%x,{%llx:%llu},," , |
1269 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1270 | |
1271 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreStatus, |
1272 | (4 + 6) * 4, |
1273 | (21 + 6) * 4); |
1274 | if (!call) |
1275 | return afs_op_nomem(op); |
1276 | |
1277 | /* marshall the parameters */ |
1278 | bp = call->request; |
1279 | *bp++ = htonl(FSSTORESTATUS); |
1280 | *bp++ = htonl(vp->fid.vid); |
1281 | *bp++ = htonl(vp->fid.vnode); |
1282 | *bp++ = htonl(vp->fid.unique); |
1283 | |
1284 | xdr_encode_AFS_StoreStatus(bp: &bp, attr: op->setattr.attr); |
1285 | |
1286 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1287 | afs_make_op_call(op, call, GFP_NOFS); |
1288 | } |
1289 | |
1290 | /* |
1291 | * deliver reply data to an FS.GetVolumeStatus |
1292 | */ |
1293 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
1294 | { |
1295 | struct afs_operation *op = call->op; |
1296 | const __be32 *bp; |
1297 | char *p; |
1298 | u32 size; |
1299 | int ret; |
1300 | |
1301 | _enter("{%u}" , call->unmarshall); |
1302 | |
1303 | switch (call->unmarshall) { |
1304 | case 0: |
1305 | call->unmarshall++; |
1306 | afs_extract_to_buf(call, size: 12 * 4); |
1307 | fallthrough; |
1308 | |
1309 | /* extract the returned status record */ |
1310 | case 1: |
1311 | _debug("extract status" ); |
1312 | ret = afs_extract_data(call, true); |
1313 | if (ret < 0) |
1314 | return ret; |
1315 | |
1316 | bp = call->buffer; |
1317 | xdr_decode_AFSFetchVolumeStatus(bp: &bp, vs: &op->volstatus.vs); |
1318 | call->unmarshall++; |
1319 | afs_extract_to_tmp(call); |
1320 | fallthrough; |
1321 | |
1322 | /* extract the volume name length */ |
1323 | case 2: |
1324 | ret = afs_extract_data(call, true); |
1325 | if (ret < 0) |
1326 | return ret; |
1327 | |
1328 | call->count = ntohl(call->tmp); |
1329 | _debug("volname length: %u" , call->count); |
1330 | if (call->count >= AFSNAMEMAX) |
1331 | return afs_protocol_error(call, afs_eproto_volname_len); |
1332 | size = (call->count + 3) & ~3; /* It's padded */ |
1333 | afs_extract_to_buf(call, size); |
1334 | call->unmarshall++; |
1335 | fallthrough; |
1336 | |
1337 | /* extract the volume name */ |
1338 | case 3: |
1339 | _debug("extract volname" ); |
1340 | ret = afs_extract_data(call, true); |
1341 | if (ret < 0) |
1342 | return ret; |
1343 | |
1344 | p = call->buffer; |
1345 | p[call->count] = 0; |
1346 | _debug("volname '%s'" , p); |
1347 | afs_extract_to_tmp(call); |
1348 | call->unmarshall++; |
1349 | fallthrough; |
1350 | |
1351 | /* extract the offline message length */ |
1352 | case 4: |
1353 | ret = afs_extract_data(call, true); |
1354 | if (ret < 0) |
1355 | return ret; |
1356 | |
1357 | call->count = ntohl(call->tmp); |
1358 | _debug("offline msg length: %u" , call->count); |
1359 | if (call->count >= AFSNAMEMAX) |
1360 | return afs_protocol_error(call, afs_eproto_offline_msg_len); |
1361 | size = (call->count + 3) & ~3; /* It's padded */ |
1362 | afs_extract_to_buf(call, size); |
1363 | call->unmarshall++; |
1364 | fallthrough; |
1365 | |
1366 | /* extract the offline message */ |
1367 | case 5: |
1368 | _debug("extract offline" ); |
1369 | ret = afs_extract_data(call, true); |
1370 | if (ret < 0) |
1371 | return ret; |
1372 | |
1373 | p = call->buffer; |
1374 | p[call->count] = 0; |
1375 | _debug("offline '%s'" , p); |
1376 | |
1377 | afs_extract_to_tmp(call); |
1378 | call->unmarshall++; |
1379 | fallthrough; |
1380 | |
1381 | /* extract the message of the day length */ |
1382 | case 6: |
1383 | ret = afs_extract_data(call, true); |
1384 | if (ret < 0) |
1385 | return ret; |
1386 | |
1387 | call->count = ntohl(call->tmp); |
1388 | _debug("motd length: %u" , call->count); |
1389 | if (call->count >= AFSNAMEMAX) |
1390 | return afs_protocol_error(call, afs_eproto_motd_len); |
1391 | size = (call->count + 3) & ~3; /* It's padded */ |
1392 | afs_extract_to_buf(call, size); |
1393 | call->unmarshall++; |
1394 | fallthrough; |
1395 | |
1396 | /* extract the message of the day */ |
1397 | case 7: |
1398 | _debug("extract motd" ); |
1399 | ret = afs_extract_data(call, false); |
1400 | if (ret < 0) |
1401 | return ret; |
1402 | |
1403 | p = call->buffer; |
1404 | p[call->count] = 0; |
1405 | _debug("motd '%s'" , p); |
1406 | |
1407 | call->unmarshall++; |
1408 | fallthrough; |
1409 | |
1410 | case 8: |
1411 | break; |
1412 | } |
1413 | |
1414 | _leave(" = 0 [done]" ); |
1415 | return 0; |
1416 | } |
1417 | |
1418 | /* |
1419 | * FS.GetVolumeStatus operation type |
1420 | */ |
1421 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { |
1422 | .name = "FS.GetVolumeStatus" , |
1423 | .op = afs_FS_GetVolumeStatus, |
1424 | .deliver = afs_deliver_fs_get_volume_status, |
1425 | .destructor = afs_flat_call_destructor, |
1426 | }; |
1427 | |
1428 | /* |
1429 | * fetch the status of a volume |
1430 | */ |
1431 | void afs_fs_get_volume_status(struct afs_operation *op) |
1432 | { |
1433 | struct afs_vnode_param *vp = &op->file[0]; |
1434 | struct afs_call *call; |
1435 | __be32 *bp; |
1436 | |
1437 | _enter("" ); |
1438 | |
1439 | call = afs_alloc_flat_call(op->net, &afs_RXFSGetVolumeStatus, 2 * 4, |
1440 | max(12 * 4, AFSOPAQUEMAX + 1)); |
1441 | if (!call) |
1442 | return afs_op_nomem(op); |
1443 | |
1444 | /* marshall the parameters */ |
1445 | bp = call->request; |
1446 | bp[0] = htonl(FSGETVOLUMESTATUS); |
1447 | bp[1] = htonl(vp->fid.vid); |
1448 | |
1449 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1450 | afs_make_op_call(op, call, GFP_NOFS); |
1451 | } |
1452 | |
1453 | /* |
1454 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock |
1455 | */ |
1456 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
1457 | { |
1458 | struct afs_operation *op = call->op; |
1459 | const __be32 *bp; |
1460 | int ret; |
1461 | |
1462 | _enter("{%u}" , call->unmarshall); |
1463 | |
1464 | ret = afs_transfer_reply(call); |
1465 | if (ret < 0) |
1466 | return ret; |
1467 | |
1468 | /* unmarshall the reply once we've received all of it */ |
1469 | bp = call->buffer; |
1470 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
1471 | |
1472 | _leave(" = 0 [done]" ); |
1473 | return 0; |
1474 | } |
1475 | |
1476 | /* |
1477 | * FS.SetLock operation type |
1478 | */ |
1479 | static const struct afs_call_type afs_RXFSSetLock = { |
1480 | .name = "FS.SetLock" , |
1481 | .op = afs_FS_SetLock, |
1482 | .deliver = afs_deliver_fs_xxxx_lock, |
1483 | .done = afs_lock_op_done, |
1484 | .destructor = afs_flat_call_destructor, |
1485 | }; |
1486 | |
1487 | /* |
1488 | * FS.ExtendLock operation type |
1489 | */ |
1490 | static const struct afs_call_type afs_RXFSExtendLock = { |
1491 | .name = "FS.ExtendLock" , |
1492 | .op = afs_FS_ExtendLock, |
1493 | .deliver = afs_deliver_fs_xxxx_lock, |
1494 | .done = afs_lock_op_done, |
1495 | .destructor = afs_flat_call_destructor, |
1496 | }; |
1497 | |
1498 | /* |
1499 | * FS.ReleaseLock operation type |
1500 | */ |
1501 | static const struct afs_call_type afs_RXFSReleaseLock = { |
1502 | .name = "FS.ReleaseLock" , |
1503 | .op = afs_FS_ReleaseLock, |
1504 | .deliver = afs_deliver_fs_xxxx_lock, |
1505 | .destructor = afs_flat_call_destructor, |
1506 | }; |
1507 | |
1508 | /* |
1509 | * Set a lock on a file |
1510 | */ |
1511 | void afs_fs_set_lock(struct afs_operation *op) |
1512 | { |
1513 | struct afs_vnode_param *vp = &op->file[0]; |
1514 | struct afs_call *call; |
1515 | __be32 *bp; |
1516 | |
1517 | _enter("" ); |
1518 | |
1519 | call = afs_alloc_flat_call(op->net, &afs_RXFSSetLock, 5 * 4, 6 * 4); |
1520 | if (!call) |
1521 | return afs_op_nomem(op); |
1522 | |
1523 | /* marshall the parameters */ |
1524 | bp = call->request; |
1525 | *bp++ = htonl(FSSETLOCK); |
1526 | *bp++ = htonl(vp->fid.vid); |
1527 | *bp++ = htonl(vp->fid.vnode); |
1528 | *bp++ = htonl(vp->fid.unique); |
1529 | *bp++ = htonl(op->lock.type); |
1530 | |
1531 | trace_afs_make_fs_calli(call, fid: &vp->fid, i: op->lock.type); |
1532 | afs_make_op_call(op, call, GFP_NOFS); |
1533 | } |
1534 | |
1535 | /* |
1536 | * extend a lock on a file |
1537 | */ |
1538 | void afs_fs_extend_lock(struct afs_operation *op) |
1539 | { |
1540 | struct afs_vnode_param *vp = &op->file[0]; |
1541 | struct afs_call *call; |
1542 | __be32 *bp; |
1543 | |
1544 | _enter("" ); |
1545 | |
1546 | call = afs_alloc_flat_call(op->net, &afs_RXFSExtendLock, 4 * 4, 6 * 4); |
1547 | if (!call) |
1548 | return afs_op_nomem(op); |
1549 | |
1550 | /* marshall the parameters */ |
1551 | bp = call->request; |
1552 | *bp++ = htonl(FSEXTENDLOCK); |
1553 | *bp++ = htonl(vp->fid.vid); |
1554 | *bp++ = htonl(vp->fid.vnode); |
1555 | *bp++ = htonl(vp->fid.unique); |
1556 | |
1557 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1558 | afs_make_op_call(op, call, GFP_NOFS); |
1559 | } |
1560 | |
1561 | /* |
1562 | * release a lock on a file |
1563 | */ |
1564 | void afs_fs_release_lock(struct afs_operation *op) |
1565 | { |
1566 | struct afs_vnode_param *vp = &op->file[0]; |
1567 | struct afs_call *call; |
1568 | __be32 *bp; |
1569 | |
1570 | _enter("" ); |
1571 | |
1572 | call = afs_alloc_flat_call(op->net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4); |
1573 | if (!call) |
1574 | return afs_op_nomem(op); |
1575 | |
1576 | /* marshall the parameters */ |
1577 | bp = call->request; |
1578 | *bp++ = htonl(FSRELEASELOCK); |
1579 | *bp++ = htonl(vp->fid.vid); |
1580 | *bp++ = htonl(vp->fid.vnode); |
1581 | *bp++ = htonl(vp->fid.unique); |
1582 | |
1583 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1584 | afs_make_op_call(op, call, GFP_NOFS); |
1585 | } |
1586 | |
1587 | /* |
1588 | * Deliver reply data to an FS.GiveUpAllCallBacks operation. |
1589 | */ |
1590 | static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call) |
1591 | { |
1592 | return afs_transfer_reply(call); |
1593 | } |
1594 | |
1595 | /* |
1596 | * FS.GiveUpAllCallBacks operation type |
1597 | */ |
1598 | static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = { |
1599 | .name = "FS.GiveUpAllCallBacks" , |
1600 | .op = afs_FS_GiveUpAllCallBacks, |
1601 | .deliver = afs_deliver_fs_give_up_all_callbacks, |
1602 | .destructor = afs_flat_call_destructor, |
1603 | }; |
1604 | |
1605 | /* |
1606 | * Flush all the callbacks we have on a server. |
1607 | */ |
1608 | int afs_fs_give_up_all_callbacks(struct afs_net *net, |
1609 | struct afs_server *server, |
1610 | struct afs_addr_cursor *ac, |
1611 | struct key *key) |
1612 | { |
1613 | struct afs_call *call; |
1614 | __be32 *bp; |
1615 | |
1616 | _enter("" ); |
1617 | |
1618 | call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0); |
1619 | if (!call) |
1620 | return -ENOMEM; |
1621 | |
1622 | call->key = key; |
1623 | |
1624 | /* marshall the parameters */ |
1625 | bp = call->request; |
1626 | *bp++ = htonl(FSGIVEUPALLCALLBACKS); |
1627 | |
1628 | call->server = afs_use_server(server, afs_server_trace_give_up_cb); |
1629 | afs_make_call(ac, call, GFP_NOFS); |
1630 | return afs_wait_for_call_to_complete(call, ac); |
1631 | } |
1632 | |
1633 | /* |
1634 | * Deliver reply data to an FS.GetCapabilities operation. |
1635 | */ |
1636 | static int afs_deliver_fs_get_capabilities(struct afs_call *call) |
1637 | { |
1638 | u32 count; |
1639 | int ret; |
1640 | |
1641 | _enter("{%u,%zu}" , call->unmarshall, iov_iter_count(call->iter)); |
1642 | |
1643 | switch (call->unmarshall) { |
1644 | case 0: |
1645 | afs_extract_to_tmp(call); |
1646 | call->unmarshall++; |
1647 | fallthrough; |
1648 | |
1649 | /* Extract the capabilities word count */ |
1650 | case 1: |
1651 | ret = afs_extract_data(call, true); |
1652 | if (ret < 0) |
1653 | return ret; |
1654 | |
1655 | count = ntohl(call->tmp); |
1656 | call->count = count; |
1657 | call->count2 = count; |
1658 | if (count == 0) { |
1659 | call->unmarshall = 4; |
1660 | call->tmp = 0; |
1661 | break; |
1662 | } |
1663 | |
1664 | /* Extract the first word of the capabilities to call->tmp */ |
1665 | afs_extract_to_tmp(call); |
1666 | call->unmarshall++; |
1667 | fallthrough; |
1668 | |
1669 | case 2: |
1670 | ret = afs_extract_data(call, false); |
1671 | if (ret < 0) |
1672 | return ret; |
1673 | |
1674 | afs_extract_discard(call, size: (count - 1) * sizeof(__be32)); |
1675 | call->unmarshall++; |
1676 | fallthrough; |
1677 | |
1678 | /* Extract remaining capabilities words */ |
1679 | case 3: |
1680 | ret = afs_extract_data(call, false); |
1681 | if (ret < 0) |
1682 | return ret; |
1683 | |
1684 | call->unmarshall++; |
1685 | break; |
1686 | } |
1687 | |
1688 | _leave(" = 0 [done]" ); |
1689 | return 0; |
1690 | } |
1691 | |
1692 | /* |
1693 | * FS.GetCapabilities operation type |
1694 | */ |
1695 | static const struct afs_call_type afs_RXFSGetCapabilities = { |
1696 | .name = "FS.GetCapabilities" , |
1697 | .op = afs_FS_GetCapabilities, |
1698 | .deliver = afs_deliver_fs_get_capabilities, |
1699 | .done = afs_fileserver_probe_result, |
1700 | .destructor = afs_flat_call_destructor, |
1701 | }; |
1702 | |
1703 | /* |
1704 | * Probe a fileserver for the capabilities that it supports. This RPC can |
1705 | * reply with up to 196 words. The operation is asynchronous and if we managed |
1706 | * to allocate a call, true is returned the result is delivered through the |
1707 | * ->done() - otherwise we return false to indicate we didn't even try. |
1708 | */ |
1709 | bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server, |
1710 | struct afs_addr_cursor *ac, struct key *key) |
1711 | { |
1712 | struct afs_call *call; |
1713 | __be32 *bp; |
1714 | |
1715 | _enter("" ); |
1716 | |
1717 | call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4); |
1718 | if (!call) |
1719 | return false; |
1720 | |
1721 | call->key = key; |
1722 | call->server = afs_use_server(server, afs_server_trace_get_caps); |
1723 | call->upgrade = true; |
1724 | call->async = true; |
1725 | call->max_lifespan = AFS_PROBE_MAX_LIFESPAN; |
1726 | |
1727 | /* marshall the parameters */ |
1728 | bp = call->request; |
1729 | *bp++ = htonl(FSGETCAPABILITIES); |
1730 | |
1731 | trace_afs_make_fs_call(call, NULL); |
1732 | afs_make_call(ac, call, GFP_NOFS); |
1733 | afs_put_call(call); |
1734 | return true; |
1735 | } |
1736 | |
1737 | /* |
1738 | * Deliver reply data to an FS.InlineBulkStatus call |
1739 | */ |
1740 | static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) |
1741 | { |
1742 | struct afs_operation *op = call->op; |
1743 | struct afs_status_cb *scb; |
1744 | const __be32 *bp; |
1745 | u32 tmp; |
1746 | int ret; |
1747 | |
1748 | _enter("{%u}" , call->unmarshall); |
1749 | |
1750 | switch (call->unmarshall) { |
1751 | case 0: |
1752 | afs_extract_to_tmp(call); |
1753 | call->unmarshall++; |
1754 | fallthrough; |
1755 | |
1756 | /* Extract the file status count and array in two steps */ |
1757 | case 1: |
1758 | _debug("extract status count" ); |
1759 | ret = afs_extract_data(call, true); |
1760 | if (ret < 0) |
1761 | return ret; |
1762 | |
1763 | tmp = ntohl(call->tmp); |
1764 | _debug("status count: %u/%u" , tmp, op->nr_files); |
1765 | if (tmp != op->nr_files) |
1766 | return afs_protocol_error(call, afs_eproto_ibulkst_count); |
1767 | |
1768 | call->count = 0; |
1769 | call->unmarshall++; |
1770 | more_counts: |
1771 | afs_extract_to_buf(call, size: 21 * sizeof(__be32)); |
1772 | fallthrough; |
1773 | |
1774 | case 2: |
1775 | _debug("extract status array %u" , call->count); |
1776 | ret = afs_extract_data(call, true); |
1777 | if (ret < 0) |
1778 | return ret; |
1779 | |
1780 | switch (call->count) { |
1781 | case 0: |
1782 | scb = &op->file[0].scb; |
1783 | break; |
1784 | case 1: |
1785 | scb = &op->file[1].scb; |
1786 | break; |
1787 | default: |
1788 | scb = &op->more_files[call->count - 2].scb; |
1789 | break; |
1790 | } |
1791 | |
1792 | bp = call->buffer; |
1793 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb); |
1794 | |
1795 | call->count++; |
1796 | if (call->count < op->nr_files) |
1797 | goto more_counts; |
1798 | |
1799 | call->count = 0; |
1800 | call->unmarshall++; |
1801 | afs_extract_to_tmp(call); |
1802 | fallthrough; |
1803 | |
1804 | /* Extract the callback count and array in two steps */ |
1805 | case 3: |
1806 | _debug("extract CB count" ); |
1807 | ret = afs_extract_data(call, true); |
1808 | if (ret < 0) |
1809 | return ret; |
1810 | |
1811 | tmp = ntohl(call->tmp); |
1812 | _debug("CB count: %u" , tmp); |
1813 | if (tmp != op->nr_files) |
1814 | return afs_protocol_error(call, afs_eproto_ibulkst_cb_count); |
1815 | call->count = 0; |
1816 | call->unmarshall++; |
1817 | more_cbs: |
1818 | afs_extract_to_buf(call, size: 3 * sizeof(__be32)); |
1819 | fallthrough; |
1820 | |
1821 | case 4: |
1822 | _debug("extract CB array" ); |
1823 | ret = afs_extract_data(call, true); |
1824 | if (ret < 0) |
1825 | return ret; |
1826 | |
1827 | _debug("unmarshall CB array" ); |
1828 | switch (call->count) { |
1829 | case 0: |
1830 | scb = &op->file[0].scb; |
1831 | break; |
1832 | case 1: |
1833 | scb = &op->file[1].scb; |
1834 | break; |
1835 | default: |
1836 | scb = &op->more_files[call->count - 2].scb; |
1837 | break; |
1838 | } |
1839 | |
1840 | bp = call->buffer; |
1841 | xdr_decode_AFSCallBack(bp: &bp, call, scb); |
1842 | call->count++; |
1843 | if (call->count < op->nr_files) |
1844 | goto more_cbs; |
1845 | |
1846 | afs_extract_to_buf(call, size: 6 * sizeof(__be32)); |
1847 | call->unmarshall++; |
1848 | fallthrough; |
1849 | |
1850 | case 5: |
1851 | ret = afs_extract_data(call, false); |
1852 | if (ret < 0) |
1853 | return ret; |
1854 | |
1855 | bp = call->buffer; |
1856 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
1857 | |
1858 | call->unmarshall++; |
1859 | fallthrough; |
1860 | |
1861 | case 6: |
1862 | break; |
1863 | } |
1864 | |
1865 | _leave(" = 0 [done]" ); |
1866 | return 0; |
1867 | } |
1868 | |
1869 | static void afs_done_fs_inline_bulk_status(struct afs_call *call) |
1870 | { |
1871 | if (call->error == -ECONNABORTED && |
1872 | call->abort_code == RX_INVALID_OPERATION) { |
1873 | set_bit(AFS_SERVER_FL_NO_IBULK, addr: &call->server->flags); |
1874 | if (call->op) |
1875 | set_bit(AFS_VOLUME_MAYBE_NO_IBULK, addr: &call->op->volume->flags); |
1876 | } |
1877 | } |
1878 | |
1879 | /* |
1880 | * FS.InlineBulkStatus operation type |
1881 | */ |
1882 | static const struct afs_call_type afs_RXFSInlineBulkStatus = { |
1883 | .name = "FS.InlineBulkStatus" , |
1884 | .op = afs_FS_InlineBulkStatus, |
1885 | .deliver = afs_deliver_fs_inline_bulk_status, |
1886 | .done = afs_done_fs_inline_bulk_status, |
1887 | .destructor = afs_flat_call_destructor, |
1888 | }; |
1889 | |
1890 | /* |
1891 | * Fetch the status information for up to 50 files |
1892 | */ |
1893 | void afs_fs_inline_bulk_status(struct afs_operation *op) |
1894 | { |
1895 | struct afs_vnode_param *dvp = &op->file[0]; |
1896 | struct afs_vnode_param *vp = &op->file[1]; |
1897 | struct afs_call *call; |
1898 | __be32 *bp; |
1899 | int i; |
1900 | |
1901 | if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) { |
1902 | op->error = -ENOTSUPP; |
1903 | return; |
1904 | } |
1905 | |
1906 | _enter(",%x,{%llx:%llu},%u" , |
1907 | key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files); |
1908 | |
1909 | call = afs_alloc_flat_call(op->net, &afs_RXFSInlineBulkStatus, |
1910 | (2 + op->nr_files * 3) * 4, |
1911 | 21 * 4); |
1912 | if (!call) |
1913 | return afs_op_nomem(op); |
1914 | |
1915 | /* marshall the parameters */ |
1916 | bp = call->request; |
1917 | *bp++ = htonl(FSINLINEBULKSTATUS); |
1918 | *bp++ = htonl(op->nr_files); |
1919 | *bp++ = htonl(dvp->fid.vid); |
1920 | *bp++ = htonl(dvp->fid.vnode); |
1921 | *bp++ = htonl(dvp->fid.unique); |
1922 | *bp++ = htonl(vp->fid.vid); |
1923 | *bp++ = htonl(vp->fid.vnode); |
1924 | *bp++ = htonl(vp->fid.unique); |
1925 | for (i = 0; i < op->nr_files - 2; i++) { |
1926 | *bp++ = htonl(op->more_files[i].fid.vid); |
1927 | *bp++ = htonl(op->more_files[i].fid.vnode); |
1928 | *bp++ = htonl(op->more_files[i].fid.unique); |
1929 | } |
1930 | |
1931 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1932 | afs_make_op_call(op, call, GFP_NOFS); |
1933 | } |
1934 | |
1935 | /* |
1936 | * deliver reply data to an FS.FetchACL |
1937 | */ |
1938 | static int afs_deliver_fs_fetch_acl(struct afs_call *call) |
1939 | { |
1940 | struct afs_operation *op = call->op; |
1941 | struct afs_vnode_param *vp = &op->file[0]; |
1942 | struct afs_acl *acl; |
1943 | const __be32 *bp; |
1944 | unsigned int size; |
1945 | int ret; |
1946 | |
1947 | _enter("{%u}" , call->unmarshall); |
1948 | |
1949 | switch (call->unmarshall) { |
1950 | case 0: |
1951 | afs_extract_to_tmp(call); |
1952 | call->unmarshall++; |
1953 | fallthrough; |
1954 | |
1955 | /* extract the returned data length */ |
1956 | case 1: |
1957 | ret = afs_extract_data(call, true); |
1958 | if (ret < 0) |
1959 | return ret; |
1960 | |
1961 | size = call->count2 = ntohl(call->tmp); |
1962 | size = round_up(size, 4); |
1963 | |
1964 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
1965 | if (!acl) |
1966 | return -ENOMEM; |
1967 | op->acl = acl; |
1968 | acl->size = call->count2; |
1969 | afs_extract_begin(call, buf: acl->data, size); |
1970 | call->unmarshall++; |
1971 | fallthrough; |
1972 | |
1973 | /* extract the returned data */ |
1974 | case 2: |
1975 | ret = afs_extract_data(call, true); |
1976 | if (ret < 0) |
1977 | return ret; |
1978 | |
1979 | afs_extract_to_buf(call, size: (21 + 6) * 4); |
1980 | call->unmarshall++; |
1981 | fallthrough; |
1982 | |
1983 | /* extract the metadata */ |
1984 | case 3: |
1985 | ret = afs_extract_data(call, false); |
1986 | if (ret < 0) |
1987 | return ret; |
1988 | |
1989 | bp = call->buffer; |
1990 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
1991 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
1992 | |
1993 | call->unmarshall++; |
1994 | fallthrough; |
1995 | |
1996 | case 4: |
1997 | break; |
1998 | } |
1999 | |
2000 | _leave(" = 0 [done]" ); |
2001 | return 0; |
2002 | } |
2003 | |
2004 | /* |
2005 | * FS.FetchACL operation type |
2006 | */ |
2007 | static const struct afs_call_type afs_RXFSFetchACL = { |
2008 | .name = "FS.FetchACL" , |
2009 | .op = afs_FS_FetchACL, |
2010 | .deliver = afs_deliver_fs_fetch_acl, |
2011 | }; |
2012 | |
2013 | /* |
2014 | * Fetch the ACL for a file. |
2015 | */ |
2016 | void afs_fs_fetch_acl(struct afs_operation *op) |
2017 | { |
2018 | struct afs_vnode_param *vp = &op->file[0]; |
2019 | struct afs_call *call; |
2020 | __be32 *bp; |
2021 | |
2022 | _enter(",%x,{%llx:%llu},," , |
2023 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
2024 | |
2025 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchACL, 16, (21 + 6) * 4); |
2026 | if (!call) |
2027 | return afs_op_nomem(op); |
2028 | |
2029 | /* marshall the parameters */ |
2030 | bp = call->request; |
2031 | bp[0] = htonl(FSFETCHACL); |
2032 | bp[1] = htonl(vp->fid.vid); |
2033 | bp[2] = htonl(vp->fid.vnode); |
2034 | bp[3] = htonl(vp->fid.unique); |
2035 | |
2036 | trace_afs_make_fs_call(call, fid: &vp->fid); |
2037 | afs_make_op_call(op, call, GFP_KERNEL); |
2038 | } |
2039 | |
2040 | /* |
2041 | * FS.StoreACL operation type |
2042 | */ |
2043 | static const struct afs_call_type afs_RXFSStoreACL = { |
2044 | .name = "FS.StoreACL" , |
2045 | .op = afs_FS_StoreACL, |
2046 | .deliver = afs_deliver_fs_file_status_and_vol, |
2047 | .destructor = afs_flat_call_destructor, |
2048 | }; |
2049 | |
2050 | /* |
2051 | * Fetch the ACL for a file. |
2052 | */ |
2053 | void afs_fs_store_acl(struct afs_operation *op) |
2054 | { |
2055 | struct afs_vnode_param *vp = &op->file[0]; |
2056 | struct afs_call *call; |
2057 | const struct afs_acl *acl = op->acl; |
2058 | size_t size; |
2059 | __be32 *bp; |
2060 | |
2061 | _enter(",%x,{%llx:%llu},," , |
2062 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
2063 | |
2064 | size = round_up(acl->size, 4); |
2065 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreACL, |
2066 | 5 * 4 + size, (21 + 6) * 4); |
2067 | if (!call) |
2068 | return afs_op_nomem(op); |
2069 | |
2070 | /* marshall the parameters */ |
2071 | bp = call->request; |
2072 | bp[0] = htonl(FSSTOREACL); |
2073 | bp[1] = htonl(vp->fid.vid); |
2074 | bp[2] = htonl(vp->fid.vnode); |
2075 | bp[3] = htonl(vp->fid.unique); |
2076 | bp[4] = htonl(acl->size); |
2077 | memcpy(&bp[5], acl->data, acl->size); |
2078 | if (acl->size != size) |
2079 | memset((void *)&bp[5] + acl->size, 0, size - acl->size); |
2080 | |
2081 | trace_afs_make_fs_call(call, fid: &vp->fid); |
2082 | afs_make_op_call(op, call, GFP_KERNEL); |
2083 | } |
2084 | |