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 | call->fid = vp->fid; |
294 | trace_afs_make_fs_call(call, fid: &vp->fid); |
295 | afs_make_op_call(op, call, GFP_NOFS); |
296 | } |
297 | |
298 | /* |
299 | * deliver reply data to an FS.FetchData |
300 | */ |
301 | static int afs_deliver_fs_fetch_data(struct afs_call *call) |
302 | { |
303 | struct afs_operation *op = call->op; |
304 | struct afs_vnode_param *vp = &op->file[0]; |
305 | struct afs_read *req = op->fetch.req; |
306 | const __be32 *bp; |
307 | int ret; |
308 | |
309 | _enter("{%u,%zu,%zu/%llu}" , |
310 | call->unmarshall, call->iov_len, iov_iter_count(call->iter), |
311 | req->actual_len); |
312 | |
313 | switch (call->unmarshall) { |
314 | case 0: |
315 | req->actual_len = 0; |
316 | call->unmarshall++; |
317 | if (call->operation_ID == FSFETCHDATA64) { |
318 | afs_extract_to_tmp64(call); |
319 | } else { |
320 | call->tmp_u = htonl(0); |
321 | afs_extract_to_tmp(call); |
322 | } |
323 | fallthrough; |
324 | |
325 | /* Extract the returned data length into |
326 | * ->actual_len. This may indicate more or less data than was |
327 | * requested will be returned. |
328 | */ |
329 | case 1: |
330 | _debug("extract data length" ); |
331 | ret = afs_extract_data(call, true); |
332 | if (ret < 0) |
333 | return ret; |
334 | |
335 | req->actual_len = be64_to_cpu(call->tmp64); |
336 | _debug("DATA length: %llu" , req->actual_len); |
337 | |
338 | if (req->actual_len == 0) |
339 | goto no_more_data; |
340 | |
341 | call->iter = req->iter; |
342 | call->iov_len = min(req->actual_len, req->len); |
343 | call->unmarshall++; |
344 | fallthrough; |
345 | |
346 | /* extract the returned data */ |
347 | case 2: |
348 | _debug("extract data %zu/%llu" , |
349 | iov_iter_count(call->iter), req->actual_len); |
350 | |
351 | ret = afs_extract_data(call, true); |
352 | if (ret < 0) |
353 | return ret; |
354 | |
355 | call->iter = &call->def_iter; |
356 | if (req->actual_len <= req->len) |
357 | goto no_more_data; |
358 | |
359 | /* Discard any excess data the server gave us */ |
360 | afs_extract_discard(call, size: req->actual_len - req->len); |
361 | call->unmarshall = 3; |
362 | fallthrough; |
363 | |
364 | case 3: |
365 | _debug("extract discard %zu/%llu" , |
366 | iov_iter_count(call->iter), req->actual_len - req->len); |
367 | |
368 | ret = afs_extract_data(call, true); |
369 | if (ret < 0) |
370 | return ret; |
371 | |
372 | no_more_data: |
373 | call->unmarshall = 4; |
374 | afs_extract_to_buf(call, size: (21 + 3 + 6) * 4); |
375 | fallthrough; |
376 | |
377 | /* extract the metadata */ |
378 | case 4: |
379 | ret = afs_extract_data(call, false); |
380 | if (ret < 0) |
381 | return ret; |
382 | |
383 | bp = call->buffer; |
384 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
385 | xdr_decode_AFSCallBack(bp: &bp, call, scb: &vp->scb); |
386 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
387 | |
388 | req->data_version = vp->scb.status.data_version; |
389 | req->file_size = vp->scb.status.size; |
390 | |
391 | call->unmarshall++; |
392 | fallthrough; |
393 | |
394 | case 5: |
395 | break; |
396 | } |
397 | |
398 | _leave(" = 0 [done]" ); |
399 | return 0; |
400 | } |
401 | |
402 | /* |
403 | * FS.FetchData operation type |
404 | */ |
405 | static const struct afs_call_type afs_RXFSFetchData = { |
406 | .name = "FS.FetchData" , |
407 | .op = afs_FS_FetchData, |
408 | .deliver = afs_deliver_fs_fetch_data, |
409 | .destructor = afs_flat_call_destructor, |
410 | }; |
411 | |
412 | static const struct afs_call_type afs_RXFSFetchData64 = { |
413 | .name = "FS.FetchData64" , |
414 | .op = afs_FS_FetchData64, |
415 | .deliver = afs_deliver_fs_fetch_data, |
416 | .destructor = afs_flat_call_destructor, |
417 | }; |
418 | |
419 | /* |
420 | * fetch data from a very large file |
421 | */ |
422 | static void afs_fs_fetch_data64(struct afs_operation *op) |
423 | { |
424 | struct afs_vnode_param *vp = &op->file[0]; |
425 | struct afs_read *req = op->fetch.req; |
426 | struct afs_call *call; |
427 | __be32 *bp; |
428 | |
429 | _enter("" ); |
430 | |
431 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
432 | if (!call) |
433 | return afs_op_nomem(op); |
434 | |
435 | /* marshall the parameters */ |
436 | bp = call->request; |
437 | bp[0] = htonl(FSFETCHDATA64); |
438 | bp[1] = htonl(vp->fid.vid); |
439 | bp[2] = htonl(vp->fid.vnode); |
440 | bp[3] = htonl(vp->fid.unique); |
441 | bp[4] = htonl(upper_32_bits(req->pos)); |
442 | bp[5] = htonl(lower_32_bits(req->pos)); |
443 | bp[6] = 0; |
444 | bp[7] = htonl(lower_32_bits(req->len)); |
445 | |
446 | call->fid = vp->fid; |
447 | trace_afs_make_fs_call(call, fid: &vp->fid); |
448 | afs_make_op_call(op, call, GFP_NOFS); |
449 | } |
450 | |
451 | /* |
452 | * fetch data from a file |
453 | */ |
454 | void afs_fs_fetch_data(struct afs_operation *op) |
455 | { |
456 | struct afs_vnode_param *vp = &op->file[0]; |
457 | struct afs_call *call; |
458 | struct afs_read *req = op->fetch.req; |
459 | __be32 *bp; |
460 | |
461 | if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) |
462 | return afs_fs_fetch_data64(op); |
463 | |
464 | _enter("" ); |
465 | |
466 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
467 | if (!call) |
468 | return afs_op_nomem(op); |
469 | |
470 | req->call_debug_id = call->debug_id; |
471 | |
472 | /* marshall the parameters */ |
473 | bp = call->request; |
474 | bp[0] = htonl(FSFETCHDATA); |
475 | bp[1] = htonl(vp->fid.vid); |
476 | bp[2] = htonl(vp->fid.vnode); |
477 | bp[3] = htonl(vp->fid.unique); |
478 | bp[4] = htonl(lower_32_bits(req->pos)); |
479 | bp[5] = htonl(lower_32_bits(req->len)); |
480 | |
481 | call->fid = vp->fid; |
482 | trace_afs_make_fs_call(call, fid: &vp->fid); |
483 | afs_make_op_call(op, call, GFP_NOFS); |
484 | } |
485 | |
486 | /* |
487 | * deliver reply data to an FS.CreateFile or an FS.MakeDir |
488 | */ |
489 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
490 | { |
491 | struct afs_operation *op = call->op; |
492 | struct afs_vnode_param *dvp = &op->file[0]; |
493 | struct afs_vnode_param *vp = &op->file[1]; |
494 | const __be32 *bp; |
495 | int ret; |
496 | |
497 | ret = afs_transfer_reply(call); |
498 | if (ret < 0) |
499 | return ret; |
500 | |
501 | /* unmarshall the reply once we've received all of it */ |
502 | bp = call->buffer; |
503 | xdr_decode_AFSFid(bp: &bp, fid: &op->file[1].fid); |
504 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
505 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
506 | xdr_decode_AFSCallBack(bp: &bp, call, scb: &vp->scb); |
507 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
508 | |
509 | _leave(" = 0 [done]" ); |
510 | return 0; |
511 | } |
512 | |
513 | /* |
514 | * FS.CreateFile and FS.MakeDir operation type |
515 | */ |
516 | static const struct afs_call_type afs_RXFSCreateFile = { |
517 | .name = "FS.CreateFile" , |
518 | .op = afs_FS_CreateFile, |
519 | .deliver = afs_deliver_fs_create_vnode, |
520 | .destructor = afs_flat_call_destructor, |
521 | }; |
522 | |
523 | /* |
524 | * Create a file. |
525 | */ |
526 | void afs_fs_create_file(struct afs_operation *op) |
527 | { |
528 | const struct qstr *name = &op->dentry->d_name; |
529 | struct afs_vnode_param *dvp = &op->file[0]; |
530 | struct afs_call *call; |
531 | size_t namesz, reqsz, padsz; |
532 | __be32 *bp; |
533 | |
534 | _enter("" ); |
535 | |
536 | namesz = name->len; |
537 | padsz = (4 - (namesz & 3)) & 3; |
538 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); |
539 | |
540 | call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, |
541 | reqsz, (3 + 21 + 21 + 3 + 6) * 4); |
542 | if (!call) |
543 | return afs_op_nomem(op); |
544 | |
545 | /* marshall the parameters */ |
546 | bp = call->request; |
547 | *bp++ = htonl(FSCREATEFILE); |
548 | *bp++ = htonl(dvp->fid.vid); |
549 | *bp++ = htonl(dvp->fid.vnode); |
550 | *bp++ = htonl(dvp->fid.unique); |
551 | *bp++ = htonl(namesz); |
552 | memcpy(bp, name->name, namesz); |
553 | bp = (void *) bp + namesz; |
554 | if (padsz > 0) { |
555 | memset(bp, 0, padsz); |
556 | bp = (void *) bp + padsz; |
557 | } |
558 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
559 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
560 | *bp++ = 0; /* owner */ |
561 | *bp++ = 0; /* group */ |
562 | *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */ |
563 | *bp++ = 0; /* segment size */ |
564 | |
565 | call->fid = dvp->fid; |
566 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
567 | afs_make_op_call(op, call, GFP_NOFS); |
568 | } |
569 | |
570 | static const struct afs_call_type afs_RXFSMakeDir = { |
571 | .name = "FS.MakeDir" , |
572 | .op = afs_FS_MakeDir, |
573 | .deliver = afs_deliver_fs_create_vnode, |
574 | .destructor = afs_flat_call_destructor, |
575 | }; |
576 | |
577 | /* |
578 | * Create a new directory |
579 | */ |
580 | void afs_fs_make_dir(struct afs_operation *op) |
581 | { |
582 | const struct qstr *name = &op->dentry->d_name; |
583 | struct afs_vnode_param *dvp = &op->file[0]; |
584 | struct afs_call *call; |
585 | size_t namesz, reqsz, padsz; |
586 | __be32 *bp; |
587 | |
588 | _enter("" ); |
589 | |
590 | namesz = name->len; |
591 | padsz = (4 - (namesz & 3)) & 3; |
592 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); |
593 | |
594 | call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir, |
595 | reqsz, (3 + 21 + 21 + 3 + 6) * 4); |
596 | if (!call) |
597 | return afs_op_nomem(op); |
598 | |
599 | /* marshall the parameters */ |
600 | bp = call->request; |
601 | *bp++ = htonl(FSMAKEDIR); |
602 | *bp++ = htonl(dvp->fid.vid); |
603 | *bp++ = htonl(dvp->fid.vnode); |
604 | *bp++ = htonl(dvp->fid.unique); |
605 | *bp++ = htonl(namesz); |
606 | memcpy(bp, name->name, namesz); |
607 | bp = (void *) bp + namesz; |
608 | if (padsz > 0) { |
609 | memset(bp, 0, padsz); |
610 | bp = (void *) bp + padsz; |
611 | } |
612 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
613 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
614 | *bp++ = 0; /* owner */ |
615 | *bp++ = 0; /* group */ |
616 | *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */ |
617 | *bp++ = 0; /* segment size */ |
618 | |
619 | call->fid = dvp->fid; |
620 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
621 | afs_make_op_call(op, call, GFP_NOFS); |
622 | } |
623 | |
624 | /* |
625 | * Deliver reply data to any operation that returns status and volume sync. |
626 | */ |
627 | static int afs_deliver_fs_file_status_and_vol(struct afs_call *call) |
628 | { |
629 | struct afs_operation *op = call->op; |
630 | struct afs_vnode_param *vp = &op->file[0]; |
631 | const __be32 *bp; |
632 | int ret; |
633 | |
634 | ret = afs_transfer_reply(call); |
635 | if (ret < 0) |
636 | return ret; |
637 | |
638 | /* unmarshall the reply once we've received all of it */ |
639 | bp = call->buffer; |
640 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
641 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
642 | |
643 | _leave(" = 0 [done]" ); |
644 | return 0; |
645 | } |
646 | |
647 | /* |
648 | * FS.RemoveFile operation type |
649 | */ |
650 | static const struct afs_call_type afs_RXFSRemoveFile = { |
651 | .name = "FS.RemoveFile" , |
652 | .op = afs_FS_RemoveFile, |
653 | .deliver = afs_deliver_fs_file_status_and_vol, |
654 | .destructor = afs_flat_call_destructor, |
655 | }; |
656 | |
657 | /* |
658 | * Remove a file. |
659 | */ |
660 | void afs_fs_remove_file(struct afs_operation *op) |
661 | { |
662 | const struct qstr *name = &op->dentry->d_name; |
663 | struct afs_vnode_param *dvp = &op->file[0]; |
664 | struct afs_call *call; |
665 | size_t namesz, reqsz, padsz; |
666 | __be32 *bp; |
667 | |
668 | _enter("" ); |
669 | |
670 | namesz = name->len; |
671 | padsz = (4 - (namesz & 3)) & 3; |
672 | reqsz = (5 * 4) + namesz + padsz; |
673 | |
674 | call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile, |
675 | reqsz, (21 + 6) * 4); |
676 | if (!call) |
677 | return afs_op_nomem(op); |
678 | |
679 | /* marshall the parameters */ |
680 | bp = call->request; |
681 | *bp++ = htonl(FSREMOVEFILE); |
682 | *bp++ = htonl(dvp->fid.vid); |
683 | *bp++ = htonl(dvp->fid.vnode); |
684 | *bp++ = htonl(dvp->fid.unique); |
685 | *bp++ = htonl(namesz); |
686 | memcpy(bp, name->name, namesz); |
687 | bp = (void *) bp + namesz; |
688 | if (padsz > 0) { |
689 | memset(bp, 0, padsz); |
690 | bp = (void *) bp + padsz; |
691 | } |
692 | |
693 | call->fid = dvp->fid; |
694 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
695 | afs_make_op_call(op, call, GFP_NOFS); |
696 | } |
697 | |
698 | static const struct afs_call_type afs_RXFSRemoveDir = { |
699 | .name = "FS.RemoveDir" , |
700 | .op = afs_FS_RemoveDir, |
701 | .deliver = afs_deliver_fs_file_status_and_vol, |
702 | .destructor = afs_flat_call_destructor, |
703 | }; |
704 | |
705 | /* |
706 | * Remove a directory. |
707 | */ |
708 | void afs_fs_remove_dir(struct afs_operation *op) |
709 | { |
710 | const struct qstr *name = &op->dentry->d_name; |
711 | struct afs_vnode_param *dvp = &op->file[0]; |
712 | struct afs_call *call; |
713 | size_t namesz, reqsz, padsz; |
714 | __be32 *bp; |
715 | |
716 | _enter("" ); |
717 | |
718 | namesz = name->len; |
719 | padsz = (4 - (namesz & 3)) & 3; |
720 | reqsz = (5 * 4) + namesz + padsz; |
721 | |
722 | call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir, |
723 | reqsz, (21 + 6) * 4); |
724 | if (!call) |
725 | return afs_op_nomem(op); |
726 | |
727 | /* marshall the parameters */ |
728 | bp = call->request; |
729 | *bp++ = htonl(FSREMOVEDIR); |
730 | *bp++ = htonl(dvp->fid.vid); |
731 | *bp++ = htonl(dvp->fid.vnode); |
732 | *bp++ = htonl(dvp->fid.unique); |
733 | *bp++ = htonl(namesz); |
734 | memcpy(bp, name->name, namesz); |
735 | bp = (void *) bp + namesz; |
736 | if (padsz > 0) { |
737 | memset(bp, 0, padsz); |
738 | bp = (void *) bp + padsz; |
739 | } |
740 | |
741 | call->fid = dvp->fid; |
742 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
743 | afs_make_op_call(op, call, GFP_NOFS); |
744 | } |
745 | |
746 | /* |
747 | * deliver reply data to an FS.Link |
748 | */ |
749 | static int afs_deliver_fs_link(struct afs_call *call) |
750 | { |
751 | struct afs_operation *op = call->op; |
752 | struct afs_vnode_param *dvp = &op->file[0]; |
753 | struct afs_vnode_param *vp = &op->file[1]; |
754 | const __be32 *bp; |
755 | int ret; |
756 | |
757 | _enter("{%u}" , call->unmarshall); |
758 | |
759 | ret = afs_transfer_reply(call); |
760 | if (ret < 0) |
761 | return ret; |
762 | |
763 | /* unmarshall the reply once we've received all of it */ |
764 | bp = call->buffer; |
765 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
766 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
767 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
768 | |
769 | _leave(" = 0 [done]" ); |
770 | return 0; |
771 | } |
772 | |
773 | /* |
774 | * FS.Link operation type |
775 | */ |
776 | static const struct afs_call_type afs_RXFSLink = { |
777 | .name = "FS.Link" , |
778 | .op = afs_FS_Link, |
779 | .deliver = afs_deliver_fs_link, |
780 | .destructor = afs_flat_call_destructor, |
781 | }; |
782 | |
783 | /* |
784 | * make a hard link |
785 | */ |
786 | void afs_fs_link(struct afs_operation *op) |
787 | { |
788 | const struct qstr *name = &op->dentry->d_name; |
789 | struct afs_vnode_param *dvp = &op->file[0]; |
790 | struct afs_vnode_param *vp = &op->file[1]; |
791 | struct afs_call *call; |
792 | size_t namesz, reqsz, padsz; |
793 | __be32 *bp; |
794 | |
795 | _enter("" ); |
796 | |
797 | namesz = name->len; |
798 | padsz = (4 - (namesz & 3)) & 3; |
799 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); |
800 | |
801 | call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); |
802 | if (!call) |
803 | return afs_op_nomem(op); |
804 | |
805 | /* marshall the parameters */ |
806 | bp = call->request; |
807 | *bp++ = htonl(FSLINK); |
808 | *bp++ = htonl(dvp->fid.vid); |
809 | *bp++ = htonl(dvp->fid.vnode); |
810 | *bp++ = htonl(dvp->fid.unique); |
811 | *bp++ = htonl(namesz); |
812 | memcpy(bp, name->name, namesz); |
813 | bp = (void *) bp + namesz; |
814 | if (padsz > 0) { |
815 | memset(bp, 0, padsz); |
816 | bp = (void *) bp + padsz; |
817 | } |
818 | *bp++ = htonl(vp->fid.vid); |
819 | *bp++ = htonl(vp->fid.vnode); |
820 | *bp++ = htonl(vp->fid.unique); |
821 | |
822 | call->fid = vp->fid; |
823 | trace_afs_make_fs_call1(call, fid: &vp->fid, name); |
824 | afs_make_op_call(op, call, GFP_NOFS); |
825 | } |
826 | |
827 | /* |
828 | * deliver reply data to an FS.Symlink |
829 | */ |
830 | static int afs_deliver_fs_symlink(struct afs_call *call) |
831 | { |
832 | struct afs_operation *op = call->op; |
833 | struct afs_vnode_param *dvp = &op->file[0]; |
834 | struct afs_vnode_param *vp = &op->file[1]; |
835 | const __be32 *bp; |
836 | int ret; |
837 | |
838 | _enter("{%u}" , call->unmarshall); |
839 | |
840 | ret = afs_transfer_reply(call); |
841 | if (ret < 0) |
842 | return ret; |
843 | |
844 | /* unmarshall the reply once we've received all of it */ |
845 | bp = call->buffer; |
846 | xdr_decode_AFSFid(bp: &bp, fid: &vp->fid); |
847 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
848 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
849 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
850 | |
851 | _leave(" = 0 [done]" ); |
852 | return 0; |
853 | } |
854 | |
855 | /* |
856 | * FS.Symlink operation type |
857 | */ |
858 | static const struct afs_call_type afs_RXFSSymlink = { |
859 | .name = "FS.Symlink" , |
860 | .op = afs_FS_Symlink, |
861 | .deliver = afs_deliver_fs_symlink, |
862 | .destructor = afs_flat_call_destructor, |
863 | }; |
864 | |
865 | /* |
866 | * create a symbolic link |
867 | */ |
868 | void afs_fs_symlink(struct afs_operation *op) |
869 | { |
870 | const struct qstr *name = &op->dentry->d_name; |
871 | struct afs_vnode_param *dvp = &op->file[0]; |
872 | struct afs_call *call; |
873 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; |
874 | __be32 *bp; |
875 | |
876 | _enter("" ); |
877 | |
878 | namesz = name->len; |
879 | padsz = (4 - (namesz & 3)) & 3; |
880 | |
881 | c_namesz = strlen(op->create.symlink); |
882 | c_padsz = (4 - (c_namesz & 3)) & 3; |
883 | |
884 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); |
885 | |
886 | call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz, |
887 | (3 + 21 + 21 + 6) * 4); |
888 | if (!call) |
889 | return afs_op_nomem(op); |
890 | |
891 | /* marshall the parameters */ |
892 | bp = call->request; |
893 | *bp++ = htonl(FSSYMLINK); |
894 | *bp++ = htonl(dvp->fid.vid); |
895 | *bp++ = htonl(dvp->fid.vnode); |
896 | *bp++ = htonl(dvp->fid.unique); |
897 | *bp++ = htonl(namesz); |
898 | memcpy(bp, name->name, namesz); |
899 | bp = (void *) bp + namesz; |
900 | if (padsz > 0) { |
901 | memset(bp, 0, padsz); |
902 | bp = (void *) bp + padsz; |
903 | } |
904 | *bp++ = htonl(c_namesz); |
905 | memcpy(bp, op->create.symlink, c_namesz); |
906 | bp = (void *) bp + c_namesz; |
907 | if (c_padsz > 0) { |
908 | memset(bp, 0, c_padsz); |
909 | bp = (void *) bp + c_padsz; |
910 | } |
911 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
912 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
913 | *bp++ = 0; /* owner */ |
914 | *bp++ = 0; /* group */ |
915 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ |
916 | *bp++ = 0; /* segment size */ |
917 | |
918 | call->fid = dvp->fid; |
919 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
920 | afs_make_op_call(op, call, GFP_NOFS); |
921 | } |
922 | |
923 | /* |
924 | * deliver reply data to an FS.Rename |
925 | */ |
926 | static int afs_deliver_fs_rename(struct afs_call *call) |
927 | { |
928 | struct afs_operation *op = call->op; |
929 | struct afs_vnode_param *orig_dvp = &op->file[0]; |
930 | struct afs_vnode_param *new_dvp = &op->file[1]; |
931 | const __be32 *bp; |
932 | int ret; |
933 | |
934 | ret = afs_transfer_reply(call); |
935 | if (ret < 0) |
936 | return ret; |
937 | |
938 | bp = call->buffer; |
939 | /* If the two dirs are the same, we have two copies of the same status |
940 | * report, so we just decode it twice. |
941 | */ |
942 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &orig_dvp->scb); |
943 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &new_dvp->scb); |
944 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
945 | |
946 | _leave(" = 0 [done]" ); |
947 | return 0; |
948 | } |
949 | |
950 | /* |
951 | * FS.Rename operation type |
952 | */ |
953 | static const struct afs_call_type afs_RXFSRename = { |
954 | .name = "FS.Rename" , |
955 | .op = afs_FS_Rename, |
956 | .deliver = afs_deliver_fs_rename, |
957 | .destructor = afs_flat_call_destructor, |
958 | }; |
959 | |
960 | /* |
961 | * Rename/move a file or directory. |
962 | */ |
963 | void afs_fs_rename(struct afs_operation *op) |
964 | { |
965 | struct afs_vnode_param *orig_dvp = &op->file[0]; |
966 | struct afs_vnode_param *new_dvp = &op->file[1]; |
967 | const struct qstr *orig_name = &op->dentry->d_name; |
968 | const struct qstr *new_name = &op->dentry_2->d_name; |
969 | struct afs_call *call; |
970 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; |
971 | __be32 *bp; |
972 | |
973 | _enter("" ); |
974 | |
975 | o_namesz = orig_name->len; |
976 | o_padsz = (4 - (o_namesz & 3)) & 3; |
977 | |
978 | n_namesz = new_name->len; |
979 | n_padsz = (4 - (n_namesz & 3)) & 3; |
980 | |
981 | reqsz = (4 * 4) + |
982 | 4 + o_namesz + o_padsz + |
983 | (3 * 4) + |
984 | 4 + n_namesz + n_padsz; |
985 | |
986 | call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); |
987 | if (!call) |
988 | return afs_op_nomem(op); |
989 | |
990 | /* marshall the parameters */ |
991 | bp = call->request; |
992 | *bp++ = htonl(FSRENAME); |
993 | *bp++ = htonl(orig_dvp->fid.vid); |
994 | *bp++ = htonl(orig_dvp->fid.vnode); |
995 | *bp++ = htonl(orig_dvp->fid.unique); |
996 | *bp++ = htonl(o_namesz); |
997 | memcpy(bp, orig_name->name, o_namesz); |
998 | bp = (void *) bp + o_namesz; |
999 | if (o_padsz > 0) { |
1000 | memset(bp, 0, o_padsz); |
1001 | bp = (void *) bp + o_padsz; |
1002 | } |
1003 | |
1004 | *bp++ = htonl(new_dvp->fid.vid); |
1005 | *bp++ = htonl(new_dvp->fid.vnode); |
1006 | *bp++ = htonl(new_dvp->fid.unique); |
1007 | *bp++ = htonl(n_namesz); |
1008 | memcpy(bp, new_name->name, n_namesz); |
1009 | bp = (void *) bp + n_namesz; |
1010 | if (n_padsz > 0) { |
1011 | memset(bp, 0, n_padsz); |
1012 | bp = (void *) bp + n_padsz; |
1013 | } |
1014 | |
1015 | call->fid = orig_dvp->fid; |
1016 | trace_afs_make_fs_call2(call, fid: &orig_dvp->fid, name: orig_name, name2: new_name); |
1017 | afs_make_op_call(op, call, GFP_NOFS); |
1018 | } |
1019 | |
1020 | /* |
1021 | * Deliver reply data to FS.StoreData or FS.StoreStatus |
1022 | */ |
1023 | static int afs_deliver_fs_store_data(struct afs_call *call) |
1024 | { |
1025 | struct afs_operation *op = call->op; |
1026 | struct afs_vnode_param *vp = &op->file[0]; |
1027 | const __be32 *bp; |
1028 | int ret; |
1029 | |
1030 | _enter("" ); |
1031 | |
1032 | ret = afs_transfer_reply(call); |
1033 | if (ret < 0) |
1034 | return ret; |
1035 | |
1036 | /* unmarshall the reply once we've received all of it */ |
1037 | bp = call->buffer; |
1038 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
1039 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
1040 | |
1041 | _leave(" = 0 [done]" ); |
1042 | return 0; |
1043 | } |
1044 | |
1045 | /* |
1046 | * FS.StoreData operation type |
1047 | */ |
1048 | static const struct afs_call_type afs_RXFSStoreData = { |
1049 | .name = "FS.StoreData" , |
1050 | .op = afs_FS_StoreData, |
1051 | .deliver = afs_deliver_fs_store_data, |
1052 | .destructor = afs_flat_call_destructor, |
1053 | }; |
1054 | |
1055 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1056 | .name = "FS.StoreData64" , |
1057 | .op = afs_FS_StoreData64, |
1058 | .deliver = afs_deliver_fs_store_data, |
1059 | .destructor = afs_flat_call_destructor, |
1060 | }; |
1061 | |
1062 | /* |
1063 | * store a set of pages to a very large file |
1064 | */ |
1065 | static void afs_fs_store_data64(struct afs_operation *op) |
1066 | { |
1067 | struct afs_vnode_param *vp = &op->file[0]; |
1068 | struct afs_call *call; |
1069 | __be32 *bp; |
1070 | |
1071 | _enter(",%x,{%llx:%llu},," , |
1072 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1073 | |
1074 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64, |
1075 | (4 + 6 + 3 * 2) * 4, |
1076 | (21 + 6) * 4); |
1077 | if (!call) |
1078 | return afs_op_nomem(op); |
1079 | |
1080 | call->write_iter = op->store.write_iter; |
1081 | |
1082 | /* marshall the parameters */ |
1083 | bp = call->request; |
1084 | *bp++ = htonl(FSSTOREDATA64); |
1085 | *bp++ = htonl(vp->fid.vid); |
1086 | *bp++ = htonl(vp->fid.vnode); |
1087 | *bp++ = htonl(vp->fid.unique); |
1088 | |
1089 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1090 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
1091 | *bp++ = 0; /* owner */ |
1092 | *bp++ = 0; /* group */ |
1093 | *bp++ = 0; /* unix mode */ |
1094 | *bp++ = 0; /* segment size */ |
1095 | |
1096 | *bp++ = htonl(upper_32_bits(op->store.pos)); |
1097 | *bp++ = htonl(lower_32_bits(op->store.pos)); |
1098 | *bp++ = htonl(upper_32_bits(op->store.size)); |
1099 | *bp++ = htonl(lower_32_bits(op->store.size)); |
1100 | *bp++ = htonl(upper_32_bits(op->store.i_size)); |
1101 | *bp++ = htonl(lower_32_bits(op->store.i_size)); |
1102 | |
1103 | call->fid = vp->fid; |
1104 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1105 | afs_make_op_call(op, call, GFP_NOFS); |
1106 | } |
1107 | |
1108 | /* |
1109 | * Write data to a file on the server. |
1110 | */ |
1111 | void afs_fs_store_data(struct afs_operation *op) |
1112 | { |
1113 | struct afs_vnode_param *vp = &op->file[0]; |
1114 | struct afs_call *call; |
1115 | __be32 *bp; |
1116 | |
1117 | _enter(",%x,{%llx:%llu},," , |
1118 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1119 | |
1120 | _debug("size %llx, at %llx, i_size %llx" , |
1121 | (unsigned long long)op->store.size, |
1122 | (unsigned long long)op->store.pos, |
1123 | (unsigned long long)op->store.i_size); |
1124 | |
1125 | if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) |
1126 | return afs_fs_store_data64(op); |
1127 | |
1128 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData, |
1129 | (4 + 6 + 3) * 4, |
1130 | (21 + 6) * 4); |
1131 | if (!call) |
1132 | return afs_op_nomem(op); |
1133 | |
1134 | call->write_iter = op->store.write_iter; |
1135 | |
1136 | /* marshall the parameters */ |
1137 | bp = call->request; |
1138 | *bp++ = htonl(FSSTOREDATA); |
1139 | *bp++ = htonl(vp->fid.vid); |
1140 | *bp++ = htonl(vp->fid.vnode); |
1141 | *bp++ = htonl(vp->fid.unique); |
1142 | |
1143 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1144 | *bp++ = htonl(op->mtime.tv_sec); /* mtime */ |
1145 | *bp++ = 0; /* owner */ |
1146 | *bp++ = 0; /* group */ |
1147 | *bp++ = 0; /* unix mode */ |
1148 | *bp++ = 0; /* segment size */ |
1149 | |
1150 | *bp++ = htonl(lower_32_bits(op->store.pos)); |
1151 | *bp++ = htonl(lower_32_bits(op->store.size)); |
1152 | *bp++ = htonl(lower_32_bits(op->store.i_size)); |
1153 | |
1154 | call->fid = vp->fid; |
1155 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1156 | afs_make_op_call(op, call, GFP_NOFS); |
1157 | } |
1158 | |
1159 | /* |
1160 | * FS.StoreStatus operation type |
1161 | */ |
1162 | static const struct afs_call_type afs_RXFSStoreStatus = { |
1163 | .name = "FS.StoreStatus" , |
1164 | .op = afs_FS_StoreStatus, |
1165 | .deliver = afs_deliver_fs_store_data, |
1166 | .destructor = afs_flat_call_destructor, |
1167 | }; |
1168 | |
1169 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { |
1170 | .name = "FS.StoreData" , |
1171 | .op = afs_FS_StoreData, |
1172 | .deliver = afs_deliver_fs_store_data, |
1173 | .destructor = afs_flat_call_destructor, |
1174 | }; |
1175 | |
1176 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1177 | .name = "FS.StoreData64" , |
1178 | .op = afs_FS_StoreData64, |
1179 | .deliver = afs_deliver_fs_store_data, |
1180 | .destructor = afs_flat_call_destructor, |
1181 | }; |
1182 | |
1183 | /* |
1184 | * set the attributes on a very large file, using FS.StoreData rather than |
1185 | * FS.StoreStatus so as to alter the file size also |
1186 | */ |
1187 | static void afs_fs_setattr_size64(struct afs_operation *op) |
1188 | { |
1189 | struct afs_vnode_param *vp = &op->file[0]; |
1190 | struct afs_call *call; |
1191 | struct iattr *attr = op->setattr.attr; |
1192 | __be32 *bp; |
1193 | |
1194 | _enter(",%x,{%llx:%llu},," , |
1195 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1196 | |
1197 | ASSERT(attr->ia_valid & ATTR_SIZE); |
1198 | |
1199 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status, |
1200 | (4 + 6 + 3 * 2) * 4, |
1201 | (21 + 6) * 4); |
1202 | if (!call) |
1203 | return afs_op_nomem(op); |
1204 | |
1205 | /* marshall the parameters */ |
1206 | bp = call->request; |
1207 | *bp++ = htonl(FSSTOREDATA64); |
1208 | *bp++ = htonl(vp->fid.vid); |
1209 | *bp++ = htonl(vp->fid.vnode); |
1210 | *bp++ = htonl(vp->fid.unique); |
1211 | |
1212 | xdr_encode_AFS_StoreStatus(bp: &bp, attr); |
1213 | |
1214 | *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */ |
1215 | *bp++ = htonl(lower_32_bits(attr->ia_size)); |
1216 | *bp++ = 0; /* size of write */ |
1217 | *bp++ = 0; |
1218 | *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */ |
1219 | *bp++ = htonl(lower_32_bits(attr->ia_size)); |
1220 | |
1221 | call->fid = vp->fid; |
1222 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1223 | afs_make_op_call(op, call, GFP_NOFS); |
1224 | } |
1225 | |
1226 | /* |
1227 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus |
1228 | * so as to alter the file size also |
1229 | */ |
1230 | static void afs_fs_setattr_size(struct afs_operation *op) |
1231 | { |
1232 | struct afs_vnode_param *vp = &op->file[0]; |
1233 | struct afs_call *call; |
1234 | struct iattr *attr = op->setattr.attr; |
1235 | __be32 *bp; |
1236 | |
1237 | _enter(",%x,{%llx:%llu},," , |
1238 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1239 | |
1240 | ASSERT(attr->ia_valid & ATTR_SIZE); |
1241 | if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) |
1242 | return afs_fs_setattr_size64(op); |
1243 | |
1244 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status, |
1245 | (4 + 6 + 3) * 4, |
1246 | (21 + 6) * 4); |
1247 | if (!call) |
1248 | return afs_op_nomem(op); |
1249 | |
1250 | /* marshall the parameters */ |
1251 | bp = call->request; |
1252 | *bp++ = htonl(FSSTOREDATA); |
1253 | *bp++ = htonl(vp->fid.vid); |
1254 | *bp++ = htonl(vp->fid.vnode); |
1255 | *bp++ = htonl(vp->fid.unique); |
1256 | |
1257 | xdr_encode_AFS_StoreStatus(bp: &bp, attr); |
1258 | |
1259 | *bp++ = htonl(attr->ia_size); /* position of start of write */ |
1260 | *bp++ = 0; /* size of write */ |
1261 | *bp++ = htonl(attr->ia_size); /* new file length */ |
1262 | |
1263 | call->fid = vp->fid; |
1264 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1265 | afs_make_op_call(op, call, GFP_NOFS); |
1266 | } |
1267 | |
1268 | /* |
1269 | * set the attributes on a file, using FS.StoreData if there's a change in file |
1270 | * size, and FS.StoreStatus otherwise |
1271 | */ |
1272 | void afs_fs_setattr(struct afs_operation *op) |
1273 | { |
1274 | struct afs_vnode_param *vp = &op->file[0]; |
1275 | struct afs_call *call; |
1276 | struct iattr *attr = op->setattr.attr; |
1277 | __be32 *bp; |
1278 | |
1279 | if (attr->ia_valid & ATTR_SIZE) |
1280 | return afs_fs_setattr_size(op); |
1281 | |
1282 | _enter(",%x,{%llx:%llu},," , |
1283 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1284 | |
1285 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreStatus, |
1286 | (4 + 6) * 4, |
1287 | (21 + 6) * 4); |
1288 | if (!call) |
1289 | return afs_op_nomem(op); |
1290 | |
1291 | /* marshall the parameters */ |
1292 | bp = call->request; |
1293 | *bp++ = htonl(FSSTORESTATUS); |
1294 | *bp++ = htonl(vp->fid.vid); |
1295 | *bp++ = htonl(vp->fid.vnode); |
1296 | *bp++ = htonl(vp->fid.unique); |
1297 | |
1298 | xdr_encode_AFS_StoreStatus(bp: &bp, attr: op->setattr.attr); |
1299 | |
1300 | call->fid = vp->fid; |
1301 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1302 | afs_make_op_call(op, call, GFP_NOFS); |
1303 | } |
1304 | |
1305 | /* |
1306 | * deliver reply data to an FS.GetVolumeStatus |
1307 | */ |
1308 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
1309 | { |
1310 | struct afs_operation *op = call->op; |
1311 | const __be32 *bp; |
1312 | char *p; |
1313 | u32 size; |
1314 | int ret; |
1315 | |
1316 | _enter("{%u}" , call->unmarshall); |
1317 | |
1318 | switch (call->unmarshall) { |
1319 | case 0: |
1320 | call->unmarshall++; |
1321 | afs_extract_to_buf(call, size: 12 * 4); |
1322 | fallthrough; |
1323 | |
1324 | /* extract the returned status record */ |
1325 | case 1: |
1326 | _debug("extract status" ); |
1327 | ret = afs_extract_data(call, true); |
1328 | if (ret < 0) |
1329 | return ret; |
1330 | |
1331 | bp = call->buffer; |
1332 | xdr_decode_AFSFetchVolumeStatus(bp: &bp, vs: &op->volstatus.vs); |
1333 | call->unmarshall++; |
1334 | afs_extract_to_tmp(call); |
1335 | fallthrough; |
1336 | |
1337 | /* extract the volume name length */ |
1338 | case 2: |
1339 | ret = afs_extract_data(call, true); |
1340 | if (ret < 0) |
1341 | return ret; |
1342 | |
1343 | call->count = ntohl(call->tmp); |
1344 | _debug("volname length: %u" , call->count); |
1345 | if (call->count >= AFSNAMEMAX) |
1346 | return afs_protocol_error(call, afs_eproto_volname_len); |
1347 | size = (call->count + 3) & ~3; /* It's padded */ |
1348 | afs_extract_to_buf(call, size); |
1349 | call->unmarshall++; |
1350 | fallthrough; |
1351 | |
1352 | /* extract the volume name */ |
1353 | case 3: |
1354 | _debug("extract volname" ); |
1355 | ret = afs_extract_data(call, true); |
1356 | if (ret < 0) |
1357 | return ret; |
1358 | |
1359 | p = call->buffer; |
1360 | p[call->count] = 0; |
1361 | _debug("volname '%s'" , p); |
1362 | afs_extract_to_tmp(call); |
1363 | call->unmarshall++; |
1364 | fallthrough; |
1365 | |
1366 | /* extract the offline message length */ |
1367 | case 4: |
1368 | ret = afs_extract_data(call, true); |
1369 | if (ret < 0) |
1370 | return ret; |
1371 | |
1372 | call->count = ntohl(call->tmp); |
1373 | _debug("offline msg length: %u" , call->count); |
1374 | if (call->count >= AFSNAMEMAX) |
1375 | return afs_protocol_error(call, afs_eproto_offline_msg_len); |
1376 | size = (call->count + 3) & ~3; /* It's padded */ |
1377 | afs_extract_to_buf(call, size); |
1378 | call->unmarshall++; |
1379 | fallthrough; |
1380 | |
1381 | /* extract the offline message */ |
1382 | case 5: |
1383 | _debug("extract offline" ); |
1384 | ret = afs_extract_data(call, true); |
1385 | if (ret < 0) |
1386 | return ret; |
1387 | |
1388 | p = call->buffer; |
1389 | p[call->count] = 0; |
1390 | _debug("offline '%s'" , p); |
1391 | |
1392 | afs_extract_to_tmp(call); |
1393 | call->unmarshall++; |
1394 | fallthrough; |
1395 | |
1396 | /* extract the message of the day length */ |
1397 | case 6: |
1398 | ret = afs_extract_data(call, true); |
1399 | if (ret < 0) |
1400 | return ret; |
1401 | |
1402 | call->count = ntohl(call->tmp); |
1403 | _debug("motd length: %u" , call->count); |
1404 | if (call->count >= AFSNAMEMAX) |
1405 | return afs_protocol_error(call, afs_eproto_motd_len); |
1406 | size = (call->count + 3) & ~3; /* It's padded */ |
1407 | afs_extract_to_buf(call, size); |
1408 | call->unmarshall++; |
1409 | fallthrough; |
1410 | |
1411 | /* extract the message of the day */ |
1412 | case 7: |
1413 | _debug("extract motd" ); |
1414 | ret = afs_extract_data(call, false); |
1415 | if (ret < 0) |
1416 | return ret; |
1417 | |
1418 | p = call->buffer; |
1419 | p[call->count] = 0; |
1420 | _debug("motd '%s'" , p); |
1421 | |
1422 | call->unmarshall++; |
1423 | fallthrough; |
1424 | |
1425 | case 8: |
1426 | break; |
1427 | } |
1428 | |
1429 | _leave(" = 0 [done]" ); |
1430 | return 0; |
1431 | } |
1432 | |
1433 | /* |
1434 | * FS.GetVolumeStatus operation type |
1435 | */ |
1436 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { |
1437 | .name = "FS.GetVolumeStatus" , |
1438 | .op = afs_FS_GetVolumeStatus, |
1439 | .deliver = afs_deliver_fs_get_volume_status, |
1440 | .destructor = afs_flat_call_destructor, |
1441 | }; |
1442 | |
1443 | /* |
1444 | * fetch the status of a volume |
1445 | */ |
1446 | void afs_fs_get_volume_status(struct afs_operation *op) |
1447 | { |
1448 | struct afs_vnode_param *vp = &op->file[0]; |
1449 | struct afs_call *call; |
1450 | __be32 *bp; |
1451 | |
1452 | _enter("" ); |
1453 | |
1454 | call = afs_alloc_flat_call(op->net, &afs_RXFSGetVolumeStatus, 2 * 4, |
1455 | max(12 * 4, AFSOPAQUEMAX + 1)); |
1456 | if (!call) |
1457 | return afs_op_nomem(op); |
1458 | |
1459 | /* marshall the parameters */ |
1460 | bp = call->request; |
1461 | bp[0] = htonl(FSGETVOLUMESTATUS); |
1462 | bp[1] = htonl(vp->fid.vid); |
1463 | |
1464 | call->fid = vp->fid; |
1465 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1466 | afs_make_op_call(op, call, GFP_NOFS); |
1467 | } |
1468 | |
1469 | /* |
1470 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock |
1471 | */ |
1472 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
1473 | { |
1474 | struct afs_operation *op = call->op; |
1475 | const __be32 *bp; |
1476 | int ret; |
1477 | |
1478 | _enter("{%u}" , call->unmarshall); |
1479 | |
1480 | ret = afs_transfer_reply(call); |
1481 | if (ret < 0) |
1482 | return ret; |
1483 | |
1484 | /* unmarshall the reply once we've received all of it */ |
1485 | bp = call->buffer; |
1486 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
1487 | |
1488 | _leave(" = 0 [done]" ); |
1489 | return 0; |
1490 | } |
1491 | |
1492 | /* |
1493 | * FS.SetLock operation type |
1494 | */ |
1495 | static const struct afs_call_type afs_RXFSSetLock = { |
1496 | .name = "FS.SetLock" , |
1497 | .op = afs_FS_SetLock, |
1498 | .deliver = afs_deliver_fs_xxxx_lock, |
1499 | .done = afs_lock_op_done, |
1500 | .destructor = afs_flat_call_destructor, |
1501 | }; |
1502 | |
1503 | /* |
1504 | * FS.ExtendLock operation type |
1505 | */ |
1506 | static const struct afs_call_type afs_RXFSExtendLock = { |
1507 | .name = "FS.ExtendLock" , |
1508 | .op = afs_FS_ExtendLock, |
1509 | .deliver = afs_deliver_fs_xxxx_lock, |
1510 | .done = afs_lock_op_done, |
1511 | .destructor = afs_flat_call_destructor, |
1512 | }; |
1513 | |
1514 | /* |
1515 | * FS.ReleaseLock operation type |
1516 | */ |
1517 | static const struct afs_call_type afs_RXFSReleaseLock = { |
1518 | .name = "FS.ReleaseLock" , |
1519 | .op = afs_FS_ReleaseLock, |
1520 | .deliver = afs_deliver_fs_xxxx_lock, |
1521 | .destructor = afs_flat_call_destructor, |
1522 | }; |
1523 | |
1524 | /* |
1525 | * Set a lock on a file |
1526 | */ |
1527 | void afs_fs_set_lock(struct afs_operation *op) |
1528 | { |
1529 | struct afs_vnode_param *vp = &op->file[0]; |
1530 | struct afs_call *call; |
1531 | __be32 *bp; |
1532 | |
1533 | _enter("" ); |
1534 | |
1535 | call = afs_alloc_flat_call(op->net, &afs_RXFSSetLock, 5 * 4, 6 * 4); |
1536 | if (!call) |
1537 | return afs_op_nomem(op); |
1538 | |
1539 | /* marshall the parameters */ |
1540 | bp = call->request; |
1541 | *bp++ = htonl(FSSETLOCK); |
1542 | *bp++ = htonl(vp->fid.vid); |
1543 | *bp++ = htonl(vp->fid.vnode); |
1544 | *bp++ = htonl(vp->fid.unique); |
1545 | *bp++ = htonl(op->lock.type); |
1546 | |
1547 | call->fid = vp->fid; |
1548 | trace_afs_make_fs_calli(call, fid: &vp->fid, i: op->lock.type); |
1549 | afs_make_op_call(op, call, GFP_NOFS); |
1550 | } |
1551 | |
1552 | /* |
1553 | * extend a lock on a file |
1554 | */ |
1555 | void afs_fs_extend_lock(struct afs_operation *op) |
1556 | { |
1557 | struct afs_vnode_param *vp = &op->file[0]; |
1558 | struct afs_call *call; |
1559 | __be32 *bp; |
1560 | |
1561 | _enter("" ); |
1562 | |
1563 | call = afs_alloc_flat_call(op->net, &afs_RXFSExtendLock, 4 * 4, 6 * 4); |
1564 | if (!call) |
1565 | return afs_op_nomem(op); |
1566 | |
1567 | /* marshall the parameters */ |
1568 | bp = call->request; |
1569 | *bp++ = htonl(FSEXTENDLOCK); |
1570 | *bp++ = htonl(vp->fid.vid); |
1571 | *bp++ = htonl(vp->fid.vnode); |
1572 | *bp++ = htonl(vp->fid.unique); |
1573 | |
1574 | call->fid = vp->fid; |
1575 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1576 | afs_make_op_call(op, call, GFP_NOFS); |
1577 | } |
1578 | |
1579 | /* |
1580 | * release a lock on a file |
1581 | */ |
1582 | void afs_fs_release_lock(struct afs_operation *op) |
1583 | { |
1584 | struct afs_vnode_param *vp = &op->file[0]; |
1585 | struct afs_call *call; |
1586 | __be32 *bp; |
1587 | |
1588 | _enter("" ); |
1589 | |
1590 | call = afs_alloc_flat_call(op->net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4); |
1591 | if (!call) |
1592 | return afs_op_nomem(op); |
1593 | |
1594 | /* marshall the parameters */ |
1595 | bp = call->request; |
1596 | *bp++ = htonl(FSRELEASELOCK); |
1597 | *bp++ = htonl(vp->fid.vid); |
1598 | *bp++ = htonl(vp->fid.vnode); |
1599 | *bp++ = htonl(vp->fid.unique); |
1600 | |
1601 | call->fid = vp->fid; |
1602 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1603 | afs_make_op_call(op, call, GFP_NOFS); |
1604 | } |
1605 | |
1606 | /* |
1607 | * Deliver reply data to an FS.GiveUpAllCallBacks operation. |
1608 | */ |
1609 | static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call) |
1610 | { |
1611 | return afs_transfer_reply(call); |
1612 | } |
1613 | |
1614 | /* |
1615 | * FS.GiveUpAllCallBacks operation type |
1616 | */ |
1617 | static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = { |
1618 | .name = "FS.GiveUpAllCallBacks" , |
1619 | .op = afs_FS_GiveUpAllCallBacks, |
1620 | .deliver = afs_deliver_fs_give_up_all_callbacks, |
1621 | .destructor = afs_flat_call_destructor, |
1622 | }; |
1623 | |
1624 | /* |
1625 | * Flush all the callbacks we have on a server. |
1626 | */ |
1627 | int afs_fs_give_up_all_callbacks(struct afs_net *net, struct afs_server *server, |
1628 | struct afs_address *addr, struct key *key) |
1629 | { |
1630 | struct afs_call *call; |
1631 | __be32 *bp; |
1632 | int ret; |
1633 | |
1634 | _enter("" ); |
1635 | |
1636 | call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0); |
1637 | if (!call) |
1638 | return -ENOMEM; |
1639 | |
1640 | call->key = key; |
1641 | call->peer = rxrpc_kernel_get_peer(peer: addr->peer); |
1642 | call->service_id = server->service_id; |
1643 | |
1644 | /* marshall the parameters */ |
1645 | bp = call->request; |
1646 | *bp++ = htonl(FSGIVEUPALLCALLBACKS); |
1647 | |
1648 | call->server = afs_use_server(server, afs_server_trace_give_up_cb); |
1649 | afs_make_call(call, GFP_NOFS); |
1650 | afs_wait_for_call_to_complete(call); |
1651 | ret = call->error; |
1652 | if (call->responded) |
1653 | set_bit(AFS_SERVER_FL_RESPONDING, addr: &server->flags); |
1654 | afs_put_call(call); |
1655 | return ret; |
1656 | } |
1657 | |
1658 | /* |
1659 | * Deliver reply data to an FS.GetCapabilities operation. |
1660 | */ |
1661 | static int afs_deliver_fs_get_capabilities(struct afs_call *call) |
1662 | { |
1663 | u32 count; |
1664 | int ret; |
1665 | |
1666 | _enter("{%u,%zu}" , call->unmarshall, iov_iter_count(call->iter)); |
1667 | |
1668 | switch (call->unmarshall) { |
1669 | case 0: |
1670 | afs_extract_to_tmp(call); |
1671 | call->unmarshall++; |
1672 | fallthrough; |
1673 | |
1674 | /* Extract the capabilities word count */ |
1675 | case 1: |
1676 | ret = afs_extract_data(call, true); |
1677 | if (ret < 0) |
1678 | return ret; |
1679 | |
1680 | count = ntohl(call->tmp); |
1681 | call->count = count; |
1682 | call->count2 = count; |
1683 | if (count == 0) { |
1684 | call->unmarshall = 4; |
1685 | call->tmp = 0; |
1686 | break; |
1687 | } |
1688 | |
1689 | /* Extract the first word of the capabilities to call->tmp */ |
1690 | afs_extract_to_tmp(call); |
1691 | call->unmarshall++; |
1692 | fallthrough; |
1693 | |
1694 | case 2: |
1695 | ret = afs_extract_data(call, false); |
1696 | if (ret < 0) |
1697 | return ret; |
1698 | |
1699 | afs_extract_discard(call, size: (count - 1) * sizeof(__be32)); |
1700 | call->unmarshall++; |
1701 | fallthrough; |
1702 | |
1703 | /* Extract remaining capabilities words */ |
1704 | case 3: |
1705 | ret = afs_extract_data(call, false); |
1706 | if (ret < 0) |
1707 | return ret; |
1708 | |
1709 | call->unmarshall++; |
1710 | break; |
1711 | } |
1712 | |
1713 | _leave(" = 0 [done]" ); |
1714 | return 0; |
1715 | } |
1716 | |
1717 | static void afs_fs_get_capabilities_destructor(struct afs_call *call) |
1718 | { |
1719 | afs_put_endpoint_state(estate: call->probe, where: afs_estate_trace_put_getcaps); |
1720 | afs_flat_call_destructor(call); |
1721 | } |
1722 | |
1723 | /* |
1724 | * FS.GetCapabilities operation type |
1725 | */ |
1726 | static const struct afs_call_type afs_RXFSGetCapabilities = { |
1727 | .name = "FS.GetCapabilities" , |
1728 | .op = afs_FS_GetCapabilities, |
1729 | .deliver = afs_deliver_fs_get_capabilities, |
1730 | .done = afs_fileserver_probe_result, |
1731 | .destructor = afs_fs_get_capabilities_destructor, |
1732 | }; |
1733 | |
1734 | /* |
1735 | * Probe a fileserver for the capabilities that it supports. This RPC can |
1736 | * reply with up to 196 words. The operation is asynchronous and if we managed |
1737 | * to allocate a call, true is returned the result is delivered through the |
1738 | * ->done() - otherwise we return false to indicate we didn't even try. |
1739 | */ |
1740 | bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server, |
1741 | struct afs_endpoint_state *estate, unsigned int addr_index, |
1742 | struct key *key) |
1743 | { |
1744 | struct afs_call *call; |
1745 | __be32 *bp; |
1746 | |
1747 | _enter("" ); |
1748 | |
1749 | call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4); |
1750 | if (!call) |
1751 | return false; |
1752 | |
1753 | call->key = key; |
1754 | call->server = afs_use_server(server, afs_server_trace_get_caps); |
1755 | call->peer = rxrpc_kernel_get_peer(peer: estate->addresses->addrs[addr_index].peer); |
1756 | call->probe = afs_get_endpoint_state(estate, where: afs_estate_trace_get_getcaps); |
1757 | call->probe_index = addr_index; |
1758 | call->service_id = server->service_id; |
1759 | call->upgrade = true; |
1760 | call->async = true; |
1761 | call->max_lifespan = AFS_PROBE_MAX_LIFESPAN; |
1762 | |
1763 | /* marshall the parameters */ |
1764 | bp = call->request; |
1765 | *bp++ = htonl(FSGETCAPABILITIES); |
1766 | |
1767 | trace_afs_make_fs_call(call, NULL); |
1768 | afs_make_call(call, GFP_NOFS); |
1769 | afs_put_call(call); |
1770 | return true; |
1771 | } |
1772 | |
1773 | /* |
1774 | * Deliver reply data to an FS.InlineBulkStatus call |
1775 | */ |
1776 | static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) |
1777 | { |
1778 | struct afs_operation *op = call->op; |
1779 | struct afs_status_cb *scb; |
1780 | const __be32 *bp; |
1781 | u32 tmp; |
1782 | int ret; |
1783 | |
1784 | _enter("{%u}" , call->unmarshall); |
1785 | |
1786 | switch (call->unmarshall) { |
1787 | case 0: |
1788 | afs_extract_to_tmp(call); |
1789 | call->unmarshall++; |
1790 | fallthrough; |
1791 | |
1792 | /* Extract the file status count and array in two steps */ |
1793 | case 1: |
1794 | _debug("extract status count" ); |
1795 | ret = afs_extract_data(call, true); |
1796 | if (ret < 0) |
1797 | return ret; |
1798 | |
1799 | tmp = ntohl(call->tmp); |
1800 | _debug("status count: %u/%u" , tmp, op->nr_files); |
1801 | if (tmp != op->nr_files) |
1802 | return afs_protocol_error(call, afs_eproto_ibulkst_count); |
1803 | |
1804 | call->count = 0; |
1805 | call->unmarshall++; |
1806 | more_counts: |
1807 | afs_extract_to_buf(call, size: 21 * sizeof(__be32)); |
1808 | fallthrough; |
1809 | |
1810 | case 2: |
1811 | _debug("extract status array %u" , call->count); |
1812 | ret = afs_extract_data(call, true); |
1813 | if (ret < 0) |
1814 | return ret; |
1815 | |
1816 | switch (call->count) { |
1817 | case 0: |
1818 | scb = &op->file[0].scb; |
1819 | break; |
1820 | case 1: |
1821 | scb = &op->file[1].scb; |
1822 | break; |
1823 | default: |
1824 | scb = &op->more_files[call->count - 2].scb; |
1825 | break; |
1826 | } |
1827 | |
1828 | bp = call->buffer; |
1829 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb); |
1830 | |
1831 | call->count++; |
1832 | if (call->count < op->nr_files) |
1833 | goto more_counts; |
1834 | |
1835 | call->count = 0; |
1836 | call->unmarshall++; |
1837 | afs_extract_to_tmp(call); |
1838 | fallthrough; |
1839 | |
1840 | /* Extract the callback count and array in two steps */ |
1841 | case 3: |
1842 | _debug("extract CB count" ); |
1843 | ret = afs_extract_data(call, true); |
1844 | if (ret < 0) |
1845 | return ret; |
1846 | |
1847 | tmp = ntohl(call->tmp); |
1848 | _debug("CB count: %u" , tmp); |
1849 | if (tmp != op->nr_files) |
1850 | return afs_protocol_error(call, afs_eproto_ibulkst_cb_count); |
1851 | call->count = 0; |
1852 | call->unmarshall++; |
1853 | more_cbs: |
1854 | afs_extract_to_buf(call, size: 3 * sizeof(__be32)); |
1855 | fallthrough; |
1856 | |
1857 | case 4: |
1858 | _debug("extract CB array" ); |
1859 | ret = afs_extract_data(call, true); |
1860 | if (ret < 0) |
1861 | return ret; |
1862 | |
1863 | _debug("unmarshall CB array" ); |
1864 | switch (call->count) { |
1865 | case 0: |
1866 | scb = &op->file[0].scb; |
1867 | break; |
1868 | case 1: |
1869 | scb = &op->file[1].scb; |
1870 | break; |
1871 | default: |
1872 | scb = &op->more_files[call->count - 2].scb; |
1873 | break; |
1874 | } |
1875 | |
1876 | bp = call->buffer; |
1877 | xdr_decode_AFSCallBack(bp: &bp, call, scb); |
1878 | call->count++; |
1879 | if (call->count < op->nr_files) |
1880 | goto more_cbs; |
1881 | |
1882 | afs_extract_to_buf(call, size: 6 * sizeof(__be32)); |
1883 | call->unmarshall++; |
1884 | fallthrough; |
1885 | |
1886 | case 5: |
1887 | ret = afs_extract_data(call, false); |
1888 | if (ret < 0) |
1889 | return ret; |
1890 | |
1891 | bp = call->buffer; |
1892 | /* Unfortunately, prior to OpenAFS-1.6, volsync here is filled |
1893 | * with rubbish. |
1894 | */ |
1895 | xdr_decode_AFSVolSync(bp: &bp, NULL); |
1896 | |
1897 | call->unmarshall++; |
1898 | fallthrough; |
1899 | |
1900 | case 6: |
1901 | break; |
1902 | } |
1903 | |
1904 | _leave(" = 0 [done]" ); |
1905 | return 0; |
1906 | } |
1907 | |
1908 | static void afs_done_fs_inline_bulk_status(struct afs_call *call) |
1909 | { |
1910 | if (call->error == -ECONNABORTED && |
1911 | call->abort_code == RX_INVALID_OPERATION) { |
1912 | set_bit(AFS_SERVER_FL_NO_IBULK, addr: &call->server->flags); |
1913 | if (call->op) |
1914 | set_bit(AFS_VOLUME_MAYBE_NO_IBULK, addr: &call->op->volume->flags); |
1915 | } |
1916 | } |
1917 | |
1918 | /* |
1919 | * FS.InlineBulkStatus operation type |
1920 | */ |
1921 | static const struct afs_call_type afs_RXFSInlineBulkStatus = { |
1922 | .name = "FS.InlineBulkStatus" , |
1923 | .op = afs_FS_InlineBulkStatus, |
1924 | .deliver = afs_deliver_fs_inline_bulk_status, |
1925 | .done = afs_done_fs_inline_bulk_status, |
1926 | .destructor = afs_flat_call_destructor, |
1927 | }; |
1928 | |
1929 | /* |
1930 | * Fetch the status information for up to 50 files |
1931 | */ |
1932 | void afs_fs_inline_bulk_status(struct afs_operation *op) |
1933 | { |
1934 | struct afs_vnode_param *dvp = &op->file[0]; |
1935 | struct afs_vnode_param *vp = &op->file[1]; |
1936 | struct afs_call *call; |
1937 | __be32 *bp; |
1938 | int i; |
1939 | |
1940 | if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) { |
1941 | afs_op_set_error(op, error: -ENOTSUPP); |
1942 | return; |
1943 | } |
1944 | |
1945 | _enter(",%x,{%llx:%llu},%u" , |
1946 | key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files); |
1947 | |
1948 | call = afs_alloc_flat_call(op->net, &afs_RXFSInlineBulkStatus, |
1949 | (2 + op->nr_files * 3) * 4, |
1950 | 21 * 4); |
1951 | if (!call) |
1952 | return afs_op_nomem(op); |
1953 | |
1954 | /* marshall the parameters */ |
1955 | bp = call->request; |
1956 | *bp++ = htonl(FSINLINEBULKSTATUS); |
1957 | *bp++ = htonl(op->nr_files); |
1958 | *bp++ = htonl(dvp->fid.vid); |
1959 | *bp++ = htonl(dvp->fid.vnode); |
1960 | *bp++ = htonl(dvp->fid.unique); |
1961 | *bp++ = htonl(vp->fid.vid); |
1962 | *bp++ = htonl(vp->fid.vnode); |
1963 | *bp++ = htonl(vp->fid.unique); |
1964 | for (i = 0; i < op->nr_files - 2; i++) { |
1965 | *bp++ = htonl(op->more_files[i].fid.vid); |
1966 | *bp++ = htonl(op->more_files[i].fid.vnode); |
1967 | *bp++ = htonl(op->more_files[i].fid.unique); |
1968 | } |
1969 | |
1970 | call->fid = vp->fid; |
1971 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1972 | afs_make_op_call(op, call, GFP_NOFS); |
1973 | } |
1974 | |
1975 | /* |
1976 | * deliver reply data to an FS.FetchACL |
1977 | */ |
1978 | static int afs_deliver_fs_fetch_acl(struct afs_call *call) |
1979 | { |
1980 | struct afs_operation *op = call->op; |
1981 | struct afs_vnode_param *vp = &op->file[0]; |
1982 | struct afs_acl *acl; |
1983 | const __be32 *bp; |
1984 | unsigned int size; |
1985 | int ret; |
1986 | |
1987 | _enter("{%u}" , call->unmarshall); |
1988 | |
1989 | switch (call->unmarshall) { |
1990 | case 0: |
1991 | afs_extract_to_tmp(call); |
1992 | call->unmarshall++; |
1993 | fallthrough; |
1994 | |
1995 | /* extract the returned data length */ |
1996 | case 1: |
1997 | ret = afs_extract_data(call, true); |
1998 | if (ret < 0) |
1999 | return ret; |
2000 | |
2001 | size = call->count2 = ntohl(call->tmp); |
2002 | size = round_up(size, 4); |
2003 | |
2004 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
2005 | if (!acl) |
2006 | return -ENOMEM; |
2007 | op->acl = acl; |
2008 | acl->size = call->count2; |
2009 | afs_extract_begin(call, buf: acl->data, size); |
2010 | call->unmarshall++; |
2011 | fallthrough; |
2012 | |
2013 | /* extract the returned data */ |
2014 | case 2: |
2015 | ret = afs_extract_data(call, true); |
2016 | if (ret < 0) |
2017 | return ret; |
2018 | |
2019 | afs_extract_to_buf(call, size: (21 + 6) * 4); |
2020 | call->unmarshall++; |
2021 | fallthrough; |
2022 | |
2023 | /* extract the metadata */ |
2024 | case 3: |
2025 | ret = afs_extract_data(call, false); |
2026 | if (ret < 0) |
2027 | return ret; |
2028 | |
2029 | bp = call->buffer; |
2030 | xdr_decode_AFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
2031 | xdr_decode_AFSVolSync(bp: &bp, volsync: &op->volsync); |
2032 | |
2033 | call->unmarshall++; |
2034 | fallthrough; |
2035 | |
2036 | case 4: |
2037 | break; |
2038 | } |
2039 | |
2040 | _leave(" = 0 [done]" ); |
2041 | return 0; |
2042 | } |
2043 | |
2044 | /* |
2045 | * FS.FetchACL operation type |
2046 | */ |
2047 | static const struct afs_call_type afs_RXFSFetchACL = { |
2048 | .name = "FS.FetchACL" , |
2049 | .op = afs_FS_FetchACL, |
2050 | .deliver = afs_deliver_fs_fetch_acl, |
2051 | }; |
2052 | |
2053 | /* |
2054 | * Fetch the ACL for a file. |
2055 | */ |
2056 | void afs_fs_fetch_acl(struct afs_operation *op) |
2057 | { |
2058 | struct afs_vnode_param *vp = &op->file[0]; |
2059 | struct afs_call *call; |
2060 | __be32 *bp; |
2061 | |
2062 | _enter(",%x,{%llx:%llu},," , |
2063 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
2064 | |
2065 | call = afs_alloc_flat_call(op->net, &afs_RXFSFetchACL, 16, (21 + 6) * 4); |
2066 | if (!call) |
2067 | return afs_op_nomem(op); |
2068 | |
2069 | /* marshall the parameters */ |
2070 | bp = call->request; |
2071 | bp[0] = htonl(FSFETCHACL); |
2072 | bp[1] = htonl(vp->fid.vid); |
2073 | bp[2] = htonl(vp->fid.vnode); |
2074 | bp[3] = htonl(vp->fid.unique); |
2075 | |
2076 | call->fid = vp->fid; |
2077 | trace_afs_make_fs_call(call, fid: &vp->fid); |
2078 | afs_make_op_call(op, call, GFP_KERNEL); |
2079 | } |
2080 | |
2081 | /* |
2082 | * FS.StoreACL operation type |
2083 | */ |
2084 | static const struct afs_call_type afs_RXFSStoreACL = { |
2085 | .name = "FS.StoreACL" , |
2086 | .op = afs_FS_StoreACL, |
2087 | .deliver = afs_deliver_fs_file_status_and_vol, |
2088 | .destructor = afs_flat_call_destructor, |
2089 | }; |
2090 | |
2091 | /* |
2092 | * Fetch the ACL for a file. |
2093 | */ |
2094 | void afs_fs_store_acl(struct afs_operation *op) |
2095 | { |
2096 | struct afs_vnode_param *vp = &op->file[0]; |
2097 | struct afs_call *call; |
2098 | const struct afs_acl *acl = op->acl; |
2099 | size_t size; |
2100 | __be32 *bp; |
2101 | |
2102 | _enter(",%x,{%llx:%llu},," , |
2103 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
2104 | |
2105 | size = round_up(acl->size, 4); |
2106 | call = afs_alloc_flat_call(op->net, &afs_RXFSStoreACL, |
2107 | 5 * 4 + size, (21 + 6) * 4); |
2108 | if (!call) |
2109 | return afs_op_nomem(op); |
2110 | |
2111 | /* marshall the parameters */ |
2112 | bp = call->request; |
2113 | bp[0] = htonl(FSSTOREACL); |
2114 | bp[1] = htonl(vp->fid.vid); |
2115 | bp[2] = htonl(vp->fid.vnode); |
2116 | bp[3] = htonl(vp->fid.unique); |
2117 | bp[4] = htonl(acl->size); |
2118 | memcpy(&bp[5], acl->data, acl->size); |
2119 | if (acl->size != size) |
2120 | memset((void *)&bp[5] + acl->size, 0, size - acl->size); |
2121 | |
2122 | call->fid = vp->fid; |
2123 | trace_afs_make_fs_call(call, fid: &vp->fid); |
2124 | afs_make_op_call(op, call, GFP_KERNEL); |
2125 | } |
2126 | |