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1/* AFS File Server client stubs
2 *
3 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#include <linux/init.h>
13#include <linux/slab.h>
14#include <linux/sched.h>
15#include <linux/circ_buf.h>
16#include <linux/iversion.h>
17#include "internal.h"
18#include "afs_fs.h"
19#include "xdr_fs.h"
20
21static const struct afs_fid afs_zero_fid;
22
23/*
24 * We need somewhere to discard into in case the server helpfully returns more
25 * than we asked for in FS.FetchData{,64}.
26 */
27static u8 afs_discard_buffer[64];
28
29static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
30{
31 call->cbi = afs_get_cb_interest(cbi);
32}
33
34/*
35 * decode an AFSFid block
36 */
37static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
38{
39 const __be32 *bp = *_bp;
40
41 fid->vid = ntohl(*bp++);
42 fid->vnode = ntohl(*bp++);
43 fid->unique = ntohl(*bp++);
44 *_bp = bp;
45}
46
47/*
48 * Dump a bad file status record.
49 */
50static void xdr_dump_bad(const __be32 *bp)
51{
52 __be32 x[4];
53 int i;
54
55 pr_notice("AFS XDR: Bad status record\n");
56 for (i = 0; i < 5 * 4 * 4; i += 16) {
57 memcpy(x, bp, 16);
58 bp += 4;
59 pr_notice("%03x: %08x %08x %08x %08x\n",
60 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
61 }
62
63 memcpy(x, bp, 4);
64 pr_notice("0x50: %08x\n", ntohl(x[0]));
65}
66
67/*
68 * Update the core inode struct from a returned status record.
69 */
70void afs_update_inode_from_status(struct afs_vnode *vnode,
71 struct afs_file_status *status,
72 const afs_dataversion_t *expected_version,
73 u8 flags)
74{
75 struct timespec t;
76 umode_t mode;
77
78 t.tv_sec = status->mtime_client;
79 t.tv_nsec = 0;
80 vnode->vfs_inode.i_ctime = t;
81 vnode->vfs_inode.i_mtime = t;
82 vnode->vfs_inode.i_atime = t;
83
84 if (flags & (AFS_VNODE_META_CHANGED | AFS_VNODE_NOT_YET_SET)) {
85 vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner);
86 vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group);
87 set_nlink(&vnode->vfs_inode, status->nlink);
88
89 mode = vnode->vfs_inode.i_mode;
90 mode &= ~S_IALLUGO;
91 mode |= status->mode;
92 barrier();
93 vnode->vfs_inode.i_mode = mode;
94 }
95
96 if (!(flags & AFS_VNODE_NOT_YET_SET)) {
97 if (expected_version &&
98 *expected_version != status->data_version) {
99 _debug("vnode modified %llx on {%x:%u} [exp %llx]",
100 (unsigned long long) status->data_version,
101 vnode->fid.vid, vnode->fid.vnode,
102 (unsigned long long) *expected_version);
103 vnode->invalid_before = status->data_version;
104 if (vnode->status.type == AFS_FTYPE_DIR) {
105 if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
106 afs_stat_v(vnode, n_inval);
107 } else {
108 set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
109 }
110 } else if (vnode->status.type == AFS_FTYPE_DIR) {
111 /* Expected directory change is handled elsewhere so
112 * that we can locally edit the directory and save on a
113 * download.
114 */
115 if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
116 flags &= ~AFS_VNODE_DATA_CHANGED;
117 }
118 }
119
120 if (flags & (AFS_VNODE_DATA_CHANGED | AFS_VNODE_NOT_YET_SET)) {
121 inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
122 i_size_write(&vnode->vfs_inode, status->size);
123 }
124}
125
126/*
127 * decode an AFSFetchStatus block
128 */
129static int xdr_decode_AFSFetchStatus(struct afs_call *call,
130 const __be32 **_bp,
131 struct afs_file_status *status,
132 struct afs_vnode *vnode,
133 const afs_dataversion_t *expected_version,
134 struct afs_read *read_req)
135{
136 const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
137 bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
138 u64 data_version, size;
139 u32 type, abort_code;
140 u8 flags = 0;
141 int ret;
142
143 if (vnode)
144 write_seqlock(&vnode->cb_lock);
145
146 abort_code = ntohl(xdr->abort_code);
147
148 if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
149 if (xdr->if_version == htonl(0) &&
150 abort_code != 0 &&
151 inline_error) {
152 /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
153 * whereby it doesn't set the interface version in the error
154 * case.
155 */
156 status->abort_code = abort_code;
157 ret = 0;
158 goto out;
159 }
160
161 pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
162 goto bad;
163 }
164
165 if (abort_code != 0 && inline_error) {
166 status->abort_code = abort_code;
167 ret = 0;
168 goto out;
169 }
170
171 type = ntohl(xdr->type);
172 switch (type) {
173 case AFS_FTYPE_FILE:
174 case AFS_FTYPE_DIR:
175 case AFS_FTYPE_SYMLINK:
176 if (type != status->type &&
177 vnode &&
178 !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
179 pr_warning("Vnode %x:%x:%x changed type %u to %u\n",
180 vnode->fid.vid,
181 vnode->fid.vnode,
182 vnode->fid.unique,
183 status->type, type);
184 goto bad;
185 }
186 status->type = type;
187 break;
188 default:
189 goto bad;
190 }
191
192#define EXTRACT_M(FIELD) \
193 do { \
194 u32 x = ntohl(xdr->FIELD); \
195 if (status->FIELD != x) { \
196 flags |= AFS_VNODE_META_CHANGED; \
197 status->FIELD = x; \
198 } \
199 } while (0)
200
201 EXTRACT_M(nlink);
202 EXTRACT_M(author);
203 EXTRACT_M(owner);
204 EXTRACT_M(caller_access); /* call ticket dependent */
205 EXTRACT_M(anon_access);
206 EXTRACT_M(mode);
207 EXTRACT_M(group);
208
209 status->mtime_client = ntohl(xdr->mtime_client);
210 status->mtime_server = ntohl(xdr->mtime_server);
211 status->lock_count = ntohl(xdr->lock_count);
212
213 size = (u64)ntohl(xdr->size_lo);
214 size |= (u64)ntohl(xdr->size_hi) << 32;
215 status->size = size;
216
217 data_version = (u64)ntohl(xdr->data_version_lo);
218 data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
219 if (data_version != status->data_version) {
220 status->data_version = data_version;
221 flags |= AFS_VNODE_DATA_CHANGED;
222 }
223
224 if (read_req) {
225 read_req->data_version = data_version;
226 read_req->file_size = size;
227 }
228
229 *_bp = (const void *)*_bp + sizeof(*xdr);
230
231 if (vnode) {
232 if (test_bit(AFS_VNODE_UNSET, &vnode->flags))
233 flags |= AFS_VNODE_NOT_YET_SET;
234 afs_update_inode_from_status(vnode, status, expected_version,
235 flags);
236 }
237
238 ret = 0;
239
240out:
241 if (vnode)
242 write_sequnlock(&vnode->cb_lock);
243 return ret;
244
245bad:
246 xdr_dump_bad(*_bp);
247 ret = afs_protocol_error(call, -EBADMSG);
248 goto out;
249}
250
251/*
252 * decode an AFSCallBack block
253 */
254static void xdr_decode_AFSCallBack(struct afs_call *call,
255 struct afs_vnode *vnode,
256 const __be32 **_bp)
257{
258 struct afs_cb_interest *old, *cbi = call->cbi;
259 const __be32 *bp = *_bp;
260 u32 cb_expiry;
261
262 write_seqlock(&vnode->cb_lock);
263
264 if (call->cb_break == afs_cb_break_sum(vnode, cbi)) {
265 vnode->cb_version = ntohl(*bp++);
266 cb_expiry = ntohl(*bp++);
267 vnode->cb_type = ntohl(*bp++);
268 vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds();
269 old = vnode->cb_interest;
270 if (old != call->cbi) {
271 vnode->cb_interest = cbi;
272 cbi = old;
273 }
274 set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
275 } else {
276 bp += 3;
277 }
278
279 write_sequnlock(&vnode->cb_lock);
280 call->cbi = cbi;
281 *_bp = bp;
282}
283
284static void xdr_decode_AFSCallBack_raw(const __be32 **_bp,
285 struct afs_callback *cb)
286{
287 const __be32 *bp = *_bp;
288
289 cb->version = ntohl(*bp++);
290 cb->expiry = ntohl(*bp++);
291 cb->type = ntohl(*bp++);
292 *_bp = bp;
293}
294
295/*
296 * decode an AFSVolSync block
297 */
298static void xdr_decode_AFSVolSync(const __be32 **_bp,
299 struct afs_volsync *volsync)
300{
301 const __be32 *bp = *_bp;
302
303 volsync->creation = ntohl(*bp++);
304 bp++; /* spare2 */
305 bp++; /* spare3 */
306 bp++; /* spare4 */
307 bp++; /* spare5 */
308 bp++; /* spare6 */
309 *_bp = bp;
310}
311
312/*
313 * encode the requested attributes into an AFSStoreStatus block
314 */
315static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
316{
317 __be32 *bp = *_bp;
318 u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
319
320 mask = 0;
321 if (attr->ia_valid & ATTR_MTIME) {
322 mask |= AFS_SET_MTIME;
323 mtime = attr->ia_mtime.tv_sec;
324 }
325
326 if (attr->ia_valid & ATTR_UID) {
327 mask |= AFS_SET_OWNER;
328 owner = from_kuid(&init_user_ns, attr->ia_uid);
329 }
330
331 if (attr->ia_valid & ATTR_GID) {
332 mask |= AFS_SET_GROUP;
333 group = from_kgid(&init_user_ns, attr->ia_gid);
334 }
335
336 if (attr->ia_valid & ATTR_MODE) {
337 mask |= AFS_SET_MODE;
338 mode = attr->ia_mode & S_IALLUGO;
339 }
340
341 *bp++ = htonl(mask);
342 *bp++ = htonl(mtime);
343 *bp++ = htonl(owner);
344 *bp++ = htonl(group);
345 *bp++ = htonl(mode);
346 *bp++ = 0; /* segment size */
347 *_bp = bp;
348}
349
350/*
351 * decode an AFSFetchVolumeStatus block
352 */
353static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
354 struct afs_volume_status *vs)
355{
356 const __be32 *bp = *_bp;
357
358 vs->vid = ntohl(*bp++);
359 vs->parent_id = ntohl(*bp++);
360 vs->online = ntohl(*bp++);
361 vs->in_service = ntohl(*bp++);
362 vs->blessed = ntohl(*bp++);
363 vs->needs_salvage = ntohl(*bp++);
364 vs->type = ntohl(*bp++);
365 vs->min_quota = ntohl(*bp++);
366 vs->max_quota = ntohl(*bp++);
367 vs->blocks_in_use = ntohl(*bp++);
368 vs->part_blocks_avail = ntohl(*bp++);
369 vs->part_max_blocks = ntohl(*bp++);
370 *_bp = bp;
371}
372
373/*
374 * deliver reply data to an FS.FetchStatus
375 */
376static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
377{
378 struct afs_vnode *vnode = call->reply[0];
379 const __be32 *bp;
380 int ret;
381
382 ret = afs_transfer_reply(call);
383 if (ret < 0)
384 return ret;
385
386 _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
387
388 /* unmarshall the reply once we've received all of it */
389 bp = call->buffer;
390 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
391 &call->expected_version, NULL) < 0)
392 return afs_protocol_error(call, -EBADMSG);
393 xdr_decode_AFSCallBack(call, vnode, &bp);
394 if (call->reply[1])
395 xdr_decode_AFSVolSync(&bp, call->reply[1]);
396
397 _leave(" = 0 [done]");
398 return 0;
399}
400
401/*
402 * FS.FetchStatus operation type
403 */
404static const struct afs_call_type afs_RXFSFetchStatus_vnode = {
405 .name = "FS.FetchStatus(vnode)",
406 .op = afs_FS_FetchStatus,
407 .deliver = afs_deliver_fs_fetch_status_vnode,
408 .destructor = afs_flat_call_destructor,
409};
410
411/*
412 * fetch the status information for a file
413 */
414int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync,
415 bool new_inode)
416{
417 struct afs_vnode *vnode = fc->vnode;
418 struct afs_call *call;
419 struct afs_net *net = afs_v2net(vnode);
420 __be32 *bp;
421
422 _enter(",%x,{%x:%u},,",
423 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
424
425 call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode,
426 16, (21 + 3 + 6) * 4);
427 if (!call) {
428 fc->ac.error = -ENOMEM;
429 return -ENOMEM;
430 }
431
432 call->key = fc->key;
433 call->reply[0] = vnode;
434 call->reply[1] = volsync;
435 call->expected_version = new_inode ? 1 : vnode->status.data_version;
436
437 /* marshall the parameters */
438 bp = call->request;
439 bp[0] = htonl(FSFETCHSTATUS);
440 bp[1] = htonl(vnode->fid.vid);
441 bp[2] = htonl(vnode->fid.vnode);
442 bp[3] = htonl(vnode->fid.unique);
443
444 call->cb_break = fc->cb_break;
445 afs_use_fs_server(call, fc->cbi);
446 trace_afs_make_fs_call(call, &vnode->fid);
447 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
448}
449
450/*
451 * deliver reply data to an FS.FetchData
452 */
453static int afs_deliver_fs_fetch_data(struct afs_call *call)
454{
455 struct afs_vnode *vnode = call->reply[0];
456 struct afs_read *req = call->reply[2];
457 const __be32 *bp;
458 unsigned int size;
459 void *buffer;
460 int ret;
461
462 _enter("{%u,%zu/%u;%llu/%llu}",
463 call->unmarshall, call->offset, call->count,
464 req->remain, req->actual_len);
465
466 switch (call->unmarshall) {
467 case 0:
468 req->actual_len = 0;
469 call->offset = 0;
470 call->unmarshall++;
471 if (call->operation_ID != FSFETCHDATA64) {
472 call->unmarshall++;
473 goto no_msw;
474 }
475
476 /* extract the upper part of the returned data length of an
477 * FSFETCHDATA64 op (which should always be 0 using this
478 * client) */
479 case 1:
480 _debug("extract data length (MSW)");
481 ret = afs_extract_data(call, &call->tmp, 4, true);
482 if (ret < 0)
483 return ret;
484
485 req->actual_len = ntohl(call->tmp);
486 req->actual_len <<= 32;
487 call->offset = 0;
488 call->unmarshall++;
489
490 no_msw:
491 /* extract the returned data length */
492 case 2:
493 _debug("extract data length");
494 ret = afs_extract_data(call, &call->tmp, 4, true);
495 if (ret < 0)
496 return ret;
497
498 req->actual_len |= ntohl(call->tmp);
499 _debug("DATA length: %llu", req->actual_len);
500
501 req->remain = req->actual_len;
502 call->offset = req->pos & (PAGE_SIZE - 1);
503 req->index = 0;
504 if (req->actual_len == 0)
505 goto no_more_data;
506 call->unmarshall++;
507
508 begin_page:
509 ASSERTCMP(req->index, <, req->nr_pages);
510 if (req->remain > PAGE_SIZE - call->offset)
511 size = PAGE_SIZE - call->offset;
512 else
513 size = req->remain;
514 call->count = call->offset + size;
515 ASSERTCMP(call->count, <=, PAGE_SIZE);
516 req->remain -= size;
517
518 /* extract the returned data */
519 case 3:
520 _debug("extract data %llu/%llu %zu/%u",
521 req->remain, req->actual_len, call->offset, call->count);
522
523 buffer = kmap(req->pages[req->index]);
524 ret = afs_extract_data(call, buffer, call->count, true);
525 kunmap(req->pages[req->index]);
526 if (ret < 0)
527 return ret;
528 if (call->offset == PAGE_SIZE) {
529 if (req->page_done)
530 req->page_done(call, req);
531 req->index++;
532 if (req->remain > 0) {
533 call->offset = 0;
534 if (req->index >= req->nr_pages) {
535 call->unmarshall = 4;
536 goto begin_discard;
537 }
538 goto begin_page;
539 }
540 }
541 goto no_more_data;
542
543 /* Discard any excess data the server gave us */
544 begin_discard:
545 case 4:
546 size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain);
547 call->count = size;
548 _debug("extract discard %llu/%llu %zu/%u",
549 req->remain, req->actual_len, call->offset, call->count);
550
551 call->offset = 0;
552 ret = afs_extract_data(call, afs_discard_buffer, call->count, true);
553 req->remain -= call->offset;
554 if (ret < 0)
555 return ret;
556 if (req->remain > 0)
557 goto begin_discard;
558
559 no_more_data:
560 call->offset = 0;
561 call->unmarshall = 5;
562
563 /* extract the metadata */
564 case 5:
565 ret = afs_extract_data(call, call->buffer,
566 (21 + 3 + 6) * 4, false);
567 if (ret < 0)
568 return ret;
569
570 bp = call->buffer;
571 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
572 &vnode->status.data_version, req) < 0)
573 return afs_protocol_error(call, -EBADMSG);
574 xdr_decode_AFSCallBack(call, vnode, &bp);
575 if (call->reply[1])
576 xdr_decode_AFSVolSync(&bp, call->reply[1]);
577
578 call->offset = 0;
579 call->unmarshall++;
580
581 case 6:
582 break;
583 }
584
585 for (; req->index < req->nr_pages; req->index++) {
586 if (call->count < PAGE_SIZE)
587 zero_user_segment(req->pages[req->index],
588 call->count, PAGE_SIZE);
589 if (req->page_done)
590 req->page_done(call, req);
591 call->count = 0;
592 }
593
594 _leave(" = 0 [done]");
595 return 0;
596}
597
598static void afs_fetch_data_destructor(struct afs_call *call)
599{
600 struct afs_read *req = call->reply[2];
601
602 afs_put_read(req);
603 afs_flat_call_destructor(call);
604}
605
606/*
607 * FS.FetchData operation type
608 */
609static const struct afs_call_type afs_RXFSFetchData = {
610 .name = "FS.FetchData",
611 .op = afs_FS_FetchData,
612 .deliver = afs_deliver_fs_fetch_data,
613 .destructor = afs_fetch_data_destructor,
614};
615
616static const struct afs_call_type afs_RXFSFetchData64 = {
617 .name = "FS.FetchData64",
618 .op = afs_FS_FetchData64,
619 .deliver = afs_deliver_fs_fetch_data,
620 .destructor = afs_fetch_data_destructor,
621};
622
623/*
624 * fetch data from a very large file
625 */
626static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req)
627{
628 struct afs_vnode *vnode = fc->vnode;
629 struct afs_call *call;
630 struct afs_net *net = afs_v2net(vnode);
631 __be32 *bp;
632
633 _enter("");
634
635 call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
636 if (!call)
637 return -ENOMEM;
638
639 call->key = fc->key;
640 call->reply[0] = vnode;
641 call->reply[1] = NULL; /* volsync */
642 call->reply[2] = req;
643 call->expected_version = vnode->status.data_version;
644
645 /* marshall the parameters */
646 bp = call->request;
647 bp[0] = htonl(FSFETCHDATA64);
648 bp[1] = htonl(vnode->fid.vid);
649 bp[2] = htonl(vnode->fid.vnode);
650 bp[3] = htonl(vnode->fid.unique);
651 bp[4] = htonl(upper_32_bits(req->pos));
652 bp[5] = htonl(lower_32_bits(req->pos));
653 bp[6] = 0;
654 bp[7] = htonl(lower_32_bits(req->len));
655
656 refcount_inc(&req->usage);
657 call->cb_break = fc->cb_break;
658 afs_use_fs_server(call, fc->cbi);
659 trace_afs_make_fs_call(call, &vnode->fid);
660 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
661}
662
663/*
664 * fetch data from a file
665 */
666int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
667{
668 struct afs_vnode *vnode = fc->vnode;
669 struct afs_call *call;
670 struct afs_net *net = afs_v2net(vnode);
671 __be32 *bp;
672
673 if (upper_32_bits(req->pos) ||
674 upper_32_bits(req->len) ||
675 upper_32_bits(req->pos + req->len))
676 return afs_fs_fetch_data64(fc, req);
677
678 _enter("");
679
680 call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
681 if (!call)
682 return -ENOMEM;
683
684 call->key = fc->key;
685 call->reply[0] = vnode;
686 call->reply[1] = NULL; /* volsync */
687 call->reply[2] = req;
688 call->expected_version = vnode->status.data_version;
689
690 /* marshall the parameters */
691 bp = call->request;
692 bp[0] = htonl(FSFETCHDATA);
693 bp[1] = htonl(vnode->fid.vid);
694 bp[2] = htonl(vnode->fid.vnode);
695 bp[3] = htonl(vnode->fid.unique);
696 bp[4] = htonl(lower_32_bits(req->pos));
697 bp[5] = htonl(lower_32_bits(req->len));
698
699 refcount_inc(&req->usage);
700 call->cb_break = fc->cb_break;
701 afs_use_fs_server(call, fc->cbi);
702 trace_afs_make_fs_call(call, &vnode->fid);
703 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
704}
705
706/*
707 * deliver reply data to an FS.CreateFile or an FS.MakeDir
708 */
709static int afs_deliver_fs_create_vnode(struct afs_call *call)
710{
711 struct afs_vnode *vnode = call->reply[0];
712 const __be32 *bp;
713 int ret;
714
715 _enter("{%u}", call->unmarshall);
716
717 ret = afs_transfer_reply(call);
718 if (ret < 0)
719 return ret;
720
721 /* unmarshall the reply once we've received all of it */
722 bp = call->buffer;
723 xdr_decode_AFSFid(&bp, call->reply[1]);
724 if (xdr_decode_AFSFetchStatus(call, &bp, call->reply[2], NULL, NULL, NULL) < 0 ||
725 xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
726 &call->expected_version, NULL) < 0)
727 return afs_protocol_error(call, -EBADMSG);
728 xdr_decode_AFSCallBack_raw(&bp, call->reply[3]);
729 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
730
731 _leave(" = 0 [done]");
732 return 0;
733}
734
735/*
736 * FS.CreateFile and FS.MakeDir operation type
737 */
738static const struct afs_call_type afs_RXFSCreateFile = {
739 .name = "FS.CreateFile",
740 .op = afs_FS_CreateFile,
741 .deliver = afs_deliver_fs_create_vnode,
742 .destructor = afs_flat_call_destructor,
743};
744
745static const struct afs_call_type afs_RXFSMakeDir = {
746 .name = "FS.MakeDir",
747 .op = afs_FS_MakeDir,
748 .deliver = afs_deliver_fs_create_vnode,
749 .destructor = afs_flat_call_destructor,
750};
751
752/*
753 * create a file or make a directory
754 */
755int afs_fs_create(struct afs_fs_cursor *fc,
756 const char *name,
757 umode_t mode,
758 u64 current_data_version,
759 struct afs_fid *newfid,
760 struct afs_file_status *newstatus,
761 struct afs_callback *newcb)
762{
763 struct afs_vnode *vnode = fc->vnode;
764 struct afs_call *call;
765 struct afs_net *net = afs_v2net(vnode);
766 size_t namesz, reqsz, padsz;
767 __be32 *bp;
768
769 _enter("");
770
771 namesz = strlen(name);
772 padsz = (4 - (namesz & 3)) & 3;
773 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
774
775 call = afs_alloc_flat_call(
776 net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile,
777 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
778 if (!call)
779 return -ENOMEM;
780
781 call->key = fc->key;
782 call->reply[0] = vnode;
783 call->reply[1] = newfid;
784 call->reply[2] = newstatus;
785 call->reply[3] = newcb;
786 call->expected_version = current_data_version + 1;
787
788 /* marshall the parameters */
789 bp = call->request;
790 *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE);
791 *bp++ = htonl(vnode->fid.vid);
792 *bp++ = htonl(vnode->fid.vnode);
793 *bp++ = htonl(vnode->fid.unique);
794 *bp++ = htonl(namesz);
795 memcpy(bp, name, namesz);
796 bp = (void *) bp + namesz;
797 if (padsz > 0) {
798 memset(bp, 0, padsz);
799 bp = (void *) bp + padsz;
800 }
801 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
802 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
803 *bp++ = 0; /* owner */
804 *bp++ = 0; /* group */
805 *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
806 *bp++ = 0; /* segment size */
807
808 afs_use_fs_server(call, fc->cbi);
809 trace_afs_make_fs_call(call, &vnode->fid);
810 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
811}
812
813/*
814 * deliver reply data to an FS.RemoveFile or FS.RemoveDir
815 */
816static int afs_deliver_fs_remove(struct afs_call *call)
817{
818 struct afs_vnode *vnode = call->reply[0];
819 const __be32 *bp;
820 int ret;
821
822 _enter("{%u}", call->unmarshall);
823
824 ret = afs_transfer_reply(call);
825 if (ret < 0)
826 return ret;
827
828 /* unmarshall the reply once we've received all of it */
829 bp = call->buffer;
830 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
831 &call->expected_version, NULL) < 0)
832 return afs_protocol_error(call, -EBADMSG);
833 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
834
835 _leave(" = 0 [done]");
836 return 0;
837}
838
839/*
840 * FS.RemoveDir/FS.RemoveFile operation type
841 */
842static const struct afs_call_type afs_RXFSRemoveFile = {
843 .name = "FS.RemoveFile",
844 .op = afs_FS_RemoveFile,
845 .deliver = afs_deliver_fs_remove,
846 .destructor = afs_flat_call_destructor,
847};
848
849static const struct afs_call_type afs_RXFSRemoveDir = {
850 .name = "FS.RemoveDir",
851 .op = afs_FS_RemoveDir,
852 .deliver = afs_deliver_fs_remove,
853 .destructor = afs_flat_call_destructor,
854};
855
856/*
857 * remove a file or directory
858 */
859int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
860 u64 current_data_version)
861{
862 struct afs_vnode *vnode = fc->vnode;
863 struct afs_call *call;
864 struct afs_net *net = afs_v2net(vnode);
865 size_t namesz, reqsz, padsz;
866 __be32 *bp;
867
868 _enter("");
869
870 namesz = strlen(name);
871 padsz = (4 - (namesz & 3)) & 3;
872 reqsz = (5 * 4) + namesz + padsz;
873
874 call = afs_alloc_flat_call(
875 net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile,
876 reqsz, (21 + 6) * 4);
877 if (!call)
878 return -ENOMEM;
879
880 call->key = fc->key;
881 call->reply[0] = vnode;
882 call->expected_version = current_data_version + 1;
883
884 /* marshall the parameters */
885 bp = call->request;
886 *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
887 *bp++ = htonl(vnode->fid.vid);
888 *bp++ = htonl(vnode->fid.vnode);
889 *bp++ = htonl(vnode->fid.unique);
890 *bp++ = htonl(namesz);
891 memcpy(bp, name, namesz);
892 bp = (void *) bp + namesz;
893 if (padsz > 0) {
894 memset(bp, 0, padsz);
895 bp = (void *) bp + padsz;
896 }
897
898 afs_use_fs_server(call, fc->cbi);
899 trace_afs_make_fs_call(call, &vnode->fid);
900 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
901}
902
903/*
904 * deliver reply data to an FS.Link
905 */
906static int afs_deliver_fs_link(struct afs_call *call)
907{
908 struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1];
909 const __be32 *bp;
910 int ret;
911
912 _enter("{%u}", call->unmarshall);
913
914 ret = afs_transfer_reply(call);
915 if (ret < 0)
916 return ret;
917
918 /* unmarshall the reply once we've received all of it */
919 bp = call->buffer;
920 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode, NULL, NULL) < 0 ||
921 xdr_decode_AFSFetchStatus(call, &bp, &dvnode->status, dvnode,
922 &call->expected_version, NULL) < 0)
923 return afs_protocol_error(call, -EBADMSG);
924 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
925
926 _leave(" = 0 [done]");
927 return 0;
928}
929
930/*
931 * FS.Link operation type
932 */
933static const struct afs_call_type afs_RXFSLink = {
934 .name = "FS.Link",
935 .op = afs_FS_Link,
936 .deliver = afs_deliver_fs_link,
937 .destructor = afs_flat_call_destructor,
938};
939
940/*
941 * make a hard link
942 */
943int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
944 const char *name, u64 current_data_version)
945{
946 struct afs_vnode *dvnode = fc->vnode;
947 struct afs_call *call;
948 struct afs_net *net = afs_v2net(vnode);
949 size_t namesz, reqsz, padsz;
950 __be32 *bp;
951
952 _enter("");
953
954 namesz = strlen(name);
955 padsz = (4 - (namesz & 3)) & 3;
956 reqsz = (5 * 4) + namesz + padsz + (3 * 4);
957
958 call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
959 if (!call)
960 return -ENOMEM;
961
962 call->key = fc->key;
963 call->reply[0] = dvnode;
964 call->reply[1] = vnode;
965 call->expected_version = current_data_version + 1;
966
967 /* marshall the parameters */
968 bp = call->request;
969 *bp++ = htonl(FSLINK);
970 *bp++ = htonl(dvnode->fid.vid);
971 *bp++ = htonl(dvnode->fid.vnode);
972 *bp++ = htonl(dvnode->fid.unique);
973 *bp++ = htonl(namesz);
974 memcpy(bp, name, namesz);
975 bp = (void *) bp + namesz;
976 if (padsz > 0) {
977 memset(bp, 0, padsz);
978 bp = (void *) bp + padsz;
979 }
980 *bp++ = htonl(vnode->fid.vid);
981 *bp++ = htonl(vnode->fid.vnode);
982 *bp++ = htonl(vnode->fid.unique);
983
984 afs_use_fs_server(call, fc->cbi);
985 trace_afs_make_fs_call(call, &vnode->fid);
986 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
987}
988
989/*
990 * deliver reply data to an FS.Symlink
991 */
992static int afs_deliver_fs_symlink(struct afs_call *call)
993{
994 struct afs_vnode *vnode = call->reply[0];
995 const __be32 *bp;
996 int ret;
997
998 _enter("{%u}", call->unmarshall);
999
1000 ret = afs_transfer_reply(call);
1001 if (ret < 0)
1002 return ret;
1003
1004 /* unmarshall the reply once we've received all of it */
1005 bp = call->buffer;
1006 xdr_decode_AFSFid(&bp, call->reply[1]);
1007 if (xdr_decode_AFSFetchStatus(call, &bp, call->reply[2], NULL, NULL, NULL) ||
1008 xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
1009 &call->expected_version, NULL) < 0)
1010 return afs_protocol_error(call, -EBADMSG);
1011 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1012
1013 _leave(" = 0 [done]");
1014 return 0;
1015}
1016
1017/*
1018 * FS.Symlink operation type
1019 */
1020static const struct afs_call_type afs_RXFSSymlink = {
1021 .name = "FS.Symlink",
1022 .op = afs_FS_Symlink,
1023 .deliver = afs_deliver_fs_symlink,
1024 .destructor = afs_flat_call_destructor,
1025};
1026
1027/*
1028 * create a symbolic link
1029 */
1030int afs_fs_symlink(struct afs_fs_cursor *fc,
1031 const char *name,
1032 const char *contents,
1033 u64 current_data_version,
1034 struct afs_fid *newfid,
1035 struct afs_file_status *newstatus)
1036{
1037 struct afs_vnode *vnode = fc->vnode;
1038 struct afs_call *call;
1039 struct afs_net *net = afs_v2net(vnode);
1040 size_t namesz, reqsz, padsz, c_namesz, c_padsz;
1041 __be32 *bp;
1042
1043 _enter("");
1044
1045 namesz = strlen(name);
1046 padsz = (4 - (namesz & 3)) & 3;
1047
1048 c_namesz = strlen(contents);
1049 c_padsz = (4 - (c_namesz & 3)) & 3;
1050
1051 reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
1052
1053 call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz,
1054 (3 + 21 + 21 + 6) * 4);
1055 if (!call)
1056 return -ENOMEM;
1057
1058 call->key = fc->key;
1059 call->reply[0] = vnode;
1060 call->reply[1] = newfid;
1061 call->reply[2] = newstatus;
1062 call->expected_version = current_data_version + 1;
1063
1064 /* marshall the parameters */
1065 bp = call->request;
1066 *bp++ = htonl(FSSYMLINK);
1067 *bp++ = htonl(vnode->fid.vid);
1068 *bp++ = htonl(vnode->fid.vnode);
1069 *bp++ = htonl(vnode->fid.unique);
1070 *bp++ = htonl(namesz);
1071 memcpy(bp, name, namesz);
1072 bp = (void *) bp + namesz;
1073 if (padsz > 0) {
1074 memset(bp, 0, padsz);
1075 bp = (void *) bp + padsz;
1076 }
1077 *bp++ = htonl(c_namesz);
1078 memcpy(bp, contents, c_namesz);
1079 bp = (void *) bp + c_namesz;
1080 if (c_padsz > 0) {
1081 memset(bp, 0, c_padsz);
1082 bp = (void *) bp + c_padsz;
1083 }
1084 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
1085 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1086 *bp++ = 0; /* owner */
1087 *bp++ = 0; /* group */
1088 *bp++ = htonl(S_IRWXUGO); /* unix mode */
1089 *bp++ = 0; /* segment size */
1090
1091 afs_use_fs_server(call, fc->cbi);
1092 trace_afs_make_fs_call(call, &vnode->fid);
1093 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1094}
1095
1096/*
1097 * deliver reply data to an FS.Rename
1098 */
1099static int afs_deliver_fs_rename(struct afs_call *call)
1100{
1101 struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1];
1102 const __be32 *bp;
1103 int ret;
1104
1105 _enter("{%u}", call->unmarshall);
1106
1107 ret = afs_transfer_reply(call);
1108 if (ret < 0)
1109 return ret;
1110
1111 /* unmarshall the reply once we've received all of it */
1112 bp = call->buffer;
1113 if (xdr_decode_AFSFetchStatus(call, &bp, &orig_dvnode->status, orig_dvnode,
1114 &call->expected_version, NULL) < 0)
1115 return afs_protocol_error(call, -EBADMSG);
1116 if (new_dvnode != orig_dvnode &&
1117 xdr_decode_AFSFetchStatus(call, &bp, &new_dvnode->status, new_dvnode,
1118 &call->expected_version_2, NULL) < 0)
1119 return afs_protocol_error(call, -EBADMSG);
1120 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1121
1122 _leave(" = 0 [done]");
1123 return 0;
1124}
1125
1126/*
1127 * FS.Rename operation type
1128 */
1129static const struct afs_call_type afs_RXFSRename = {
1130 .name = "FS.Rename",
1131 .op = afs_FS_Rename,
1132 .deliver = afs_deliver_fs_rename,
1133 .destructor = afs_flat_call_destructor,
1134};
1135
1136/*
1137 * create a symbolic link
1138 */
1139int afs_fs_rename(struct afs_fs_cursor *fc,
1140 const char *orig_name,
1141 struct afs_vnode *new_dvnode,
1142 const char *new_name,
1143 u64 current_orig_data_version,
1144 u64 current_new_data_version)
1145{
1146 struct afs_vnode *orig_dvnode = fc->vnode;
1147 struct afs_call *call;
1148 struct afs_net *net = afs_v2net(orig_dvnode);
1149 size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
1150 __be32 *bp;
1151
1152 _enter("");
1153
1154 o_namesz = strlen(orig_name);
1155 o_padsz = (4 - (o_namesz & 3)) & 3;
1156
1157 n_namesz = strlen(new_name);
1158 n_padsz = (4 - (n_namesz & 3)) & 3;
1159
1160 reqsz = (4 * 4) +
1161 4 + o_namesz + o_padsz +
1162 (3 * 4) +
1163 4 + n_namesz + n_padsz;
1164
1165 call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
1166 if (!call)
1167 return -ENOMEM;
1168
1169 call->key = fc->key;
1170 call->reply[0] = orig_dvnode;
1171 call->reply[1] = new_dvnode;
1172 call->expected_version = current_orig_data_version + 1;
1173 call->expected_version_2 = current_new_data_version + 1;
1174
1175 /* marshall the parameters */
1176 bp = call->request;
1177 *bp++ = htonl(FSRENAME);
1178 *bp++ = htonl(orig_dvnode->fid.vid);
1179 *bp++ = htonl(orig_dvnode->fid.vnode);
1180 *bp++ = htonl(orig_dvnode->fid.unique);
1181 *bp++ = htonl(o_namesz);
1182 memcpy(bp, orig_name, o_namesz);
1183 bp = (void *) bp + o_namesz;
1184 if (o_padsz > 0) {
1185 memset(bp, 0, o_padsz);
1186 bp = (void *) bp + o_padsz;
1187 }
1188
1189 *bp++ = htonl(new_dvnode->fid.vid);
1190 *bp++ = htonl(new_dvnode->fid.vnode);
1191 *bp++ = htonl(new_dvnode->fid.unique);
1192 *bp++ = htonl(n_namesz);
1193 memcpy(bp, new_name, n_namesz);
1194 bp = (void *) bp + n_namesz;
1195 if (n_padsz > 0) {
1196 memset(bp, 0, n_padsz);
1197 bp = (void *) bp + n_padsz;
1198 }
1199
1200 afs_use_fs_server(call, fc->cbi);
1201 trace_afs_make_fs_call(call, &orig_dvnode->fid);
1202 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1203}
1204
1205/*
1206 * deliver reply data to an FS.StoreData
1207 */
1208static int afs_deliver_fs_store_data(struct afs_call *call)
1209{
1210 struct afs_vnode *vnode = call->reply[0];
1211 const __be32 *bp;
1212 int ret;
1213
1214 _enter("");
1215
1216 ret = afs_transfer_reply(call);
1217 if (ret < 0)
1218 return ret;
1219
1220 /* unmarshall the reply once we've received all of it */
1221 bp = call->buffer;
1222 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
1223 &call->expected_version, NULL) < 0)
1224 return afs_protocol_error(call, -EBADMSG);
1225 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1226
1227 afs_pages_written_back(vnode, call);
1228
1229 _leave(" = 0 [done]");
1230 return 0;
1231}
1232
1233/*
1234 * FS.StoreData operation type
1235 */
1236static const struct afs_call_type afs_RXFSStoreData = {
1237 .name = "FS.StoreData",
1238 .op = afs_FS_StoreData,
1239 .deliver = afs_deliver_fs_store_data,
1240 .destructor = afs_flat_call_destructor,
1241};
1242
1243static const struct afs_call_type afs_RXFSStoreData64 = {
1244 .name = "FS.StoreData64",
1245 .op = afs_FS_StoreData64,
1246 .deliver = afs_deliver_fs_store_data,
1247 .destructor = afs_flat_call_destructor,
1248};
1249
1250/*
1251 * store a set of pages to a very large file
1252 */
1253static int afs_fs_store_data64(struct afs_fs_cursor *fc,
1254 struct address_space *mapping,
1255 pgoff_t first, pgoff_t last,
1256 unsigned offset, unsigned to,
1257 loff_t size, loff_t pos, loff_t i_size)
1258{
1259 struct afs_vnode *vnode = fc->vnode;
1260 struct afs_call *call;
1261 struct afs_net *net = afs_v2net(vnode);
1262 __be32 *bp;
1263
1264 _enter(",%x,{%x:%u},,",
1265 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1266
1267 call = afs_alloc_flat_call(net, &afs_RXFSStoreData64,
1268 (4 + 6 + 3 * 2) * 4,
1269 (21 + 6) * 4);
1270 if (!call)
1271 return -ENOMEM;
1272
1273 call->key = fc->key;
1274 call->mapping = mapping;
1275 call->reply[0] = vnode;
1276 call->first = first;
1277 call->last = last;
1278 call->first_offset = offset;
1279 call->last_to = to;
1280 call->send_pages = true;
1281 call->expected_version = vnode->status.data_version + 1;
1282
1283 /* marshall the parameters */
1284 bp = call->request;
1285 *bp++ = htonl(FSSTOREDATA64);
1286 *bp++ = htonl(vnode->fid.vid);
1287 *bp++ = htonl(vnode->fid.vnode);
1288 *bp++ = htonl(vnode->fid.unique);
1289
1290 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1291 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1292 *bp++ = 0; /* owner */
1293 *bp++ = 0; /* group */
1294 *bp++ = 0; /* unix mode */
1295 *bp++ = 0; /* segment size */
1296
1297 *bp++ = htonl(pos >> 32);
1298 *bp++ = htonl((u32) pos);
1299 *bp++ = htonl(size >> 32);
1300 *bp++ = htonl((u32) size);
1301 *bp++ = htonl(i_size >> 32);
1302 *bp++ = htonl((u32) i_size);
1303
1304 trace_afs_make_fs_call(call, &vnode->fid);
1305 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1306}
1307
1308/*
1309 * store a set of pages
1310 */
1311int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
1312 pgoff_t first, pgoff_t last,
1313 unsigned offset, unsigned to)
1314{
1315 struct afs_vnode *vnode = fc->vnode;
1316 struct afs_call *call;
1317 struct afs_net *net = afs_v2net(vnode);
1318 loff_t size, pos, i_size;
1319 __be32 *bp;
1320
1321 _enter(",%x,{%x:%u},,",
1322 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1323
1324 size = (loff_t)to - (loff_t)offset;
1325 if (first != last)
1326 size += (loff_t)(last - first) << PAGE_SHIFT;
1327 pos = (loff_t)first << PAGE_SHIFT;
1328 pos += offset;
1329
1330 i_size = i_size_read(&vnode->vfs_inode);
1331 if (pos + size > i_size)
1332 i_size = size + pos;
1333
1334 _debug("size %llx, at %llx, i_size %llx",
1335 (unsigned long long) size, (unsigned long long) pos,
1336 (unsigned long long) i_size);
1337
1338 if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
1339 return afs_fs_store_data64(fc, mapping, first, last, offset, to,
1340 size, pos, i_size);
1341
1342 call = afs_alloc_flat_call(net, &afs_RXFSStoreData,
1343 (4 + 6 + 3) * 4,
1344 (21 + 6) * 4);
1345 if (!call)
1346 return -ENOMEM;
1347
1348 call->key = fc->key;
1349 call->mapping = mapping;
1350 call->reply[0] = vnode;
1351 call->first = first;
1352 call->last = last;
1353 call->first_offset = offset;
1354 call->last_to = to;
1355 call->send_pages = true;
1356 call->expected_version = vnode->status.data_version + 1;
1357
1358 /* marshall the parameters */
1359 bp = call->request;
1360 *bp++ = htonl(FSSTOREDATA);
1361 *bp++ = htonl(vnode->fid.vid);
1362 *bp++ = htonl(vnode->fid.vnode);
1363 *bp++ = htonl(vnode->fid.unique);
1364
1365 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1366 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1367 *bp++ = 0; /* owner */
1368 *bp++ = 0; /* group */
1369 *bp++ = 0; /* unix mode */
1370 *bp++ = 0; /* segment size */
1371
1372 *bp++ = htonl(pos);
1373 *bp++ = htonl(size);
1374 *bp++ = htonl(i_size);
1375
1376 afs_use_fs_server(call, fc->cbi);
1377 trace_afs_make_fs_call(call, &vnode->fid);
1378 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1379}
1380
1381/*
1382 * deliver reply data to an FS.StoreStatus
1383 */
1384static int afs_deliver_fs_store_status(struct afs_call *call)
1385{
1386 struct afs_vnode *vnode = call->reply[0];
1387 const __be32 *bp;
1388 int ret;
1389
1390 _enter("");
1391
1392 ret = afs_transfer_reply(call);
1393 if (ret < 0)
1394 return ret;
1395
1396 /* unmarshall the reply once we've received all of it */
1397 bp = call->buffer;
1398 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
1399 &call->expected_version, NULL) < 0)
1400 return afs_protocol_error(call, -EBADMSG);
1401 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1402
1403 _leave(" = 0 [done]");
1404 return 0;
1405}
1406
1407/*
1408 * FS.StoreStatus operation type
1409 */
1410static const struct afs_call_type afs_RXFSStoreStatus = {
1411 .name = "FS.StoreStatus",
1412 .op = afs_FS_StoreStatus,
1413 .deliver = afs_deliver_fs_store_status,
1414 .destructor = afs_flat_call_destructor,
1415};
1416
1417static const struct afs_call_type afs_RXFSStoreData_as_Status = {
1418 .name = "FS.StoreData",
1419 .op = afs_FS_StoreData,
1420 .deliver = afs_deliver_fs_store_status,
1421 .destructor = afs_flat_call_destructor,
1422};
1423
1424static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
1425 .name = "FS.StoreData64",
1426 .op = afs_FS_StoreData64,
1427 .deliver = afs_deliver_fs_store_status,
1428 .destructor = afs_flat_call_destructor,
1429};
1430
1431/*
1432 * set the attributes on a very large file, using FS.StoreData rather than
1433 * FS.StoreStatus so as to alter the file size also
1434 */
1435static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr)
1436{
1437 struct afs_vnode *vnode = fc->vnode;
1438 struct afs_call *call;
1439 struct afs_net *net = afs_v2net(vnode);
1440 __be32 *bp;
1441
1442 _enter(",%x,{%x:%u},,",
1443 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1444
1445 ASSERT(attr->ia_valid & ATTR_SIZE);
1446
1447 call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status,
1448 (4 + 6 + 3 * 2) * 4,
1449 (21 + 6) * 4);
1450 if (!call)
1451 return -ENOMEM;
1452
1453 call->key = fc->key;
1454 call->reply[0] = vnode;
1455 call->expected_version = vnode->status.data_version + 1;
1456
1457 /* marshall the parameters */
1458 bp = call->request;
1459 *bp++ = htonl(FSSTOREDATA64);
1460 *bp++ = htonl(vnode->fid.vid);
1461 *bp++ = htonl(vnode->fid.vnode);
1462 *bp++ = htonl(vnode->fid.unique);
1463
1464 xdr_encode_AFS_StoreStatus(&bp, attr);
1465
1466 *bp++ = 0; /* position of start of write */
1467 *bp++ = 0;
1468 *bp++ = 0; /* size of write */
1469 *bp++ = 0;
1470 *bp++ = htonl(attr->ia_size >> 32); /* new file length */
1471 *bp++ = htonl((u32) attr->ia_size);
1472
1473 afs_use_fs_server(call, fc->cbi);
1474 trace_afs_make_fs_call(call, &vnode->fid);
1475 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1476}
1477
1478/*
1479 * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
1480 * so as to alter the file size also
1481 */
1482static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr)
1483{
1484 struct afs_vnode *vnode = fc->vnode;
1485 struct afs_call *call;
1486 struct afs_net *net = afs_v2net(vnode);
1487 __be32 *bp;
1488
1489 _enter(",%x,{%x:%u},,",
1490 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1491
1492 ASSERT(attr->ia_valid & ATTR_SIZE);
1493 if (attr->ia_size >> 32)
1494 return afs_fs_setattr_size64(fc, attr);
1495
1496 call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status,
1497 (4 + 6 + 3) * 4,
1498 (21 + 6) * 4);
1499 if (!call)
1500 return -ENOMEM;
1501
1502 call->key = fc->key;
1503 call->reply[0] = vnode;
1504 call->expected_version = vnode->status.data_version + 1;
1505
1506 /* marshall the parameters */
1507 bp = call->request;
1508 *bp++ = htonl(FSSTOREDATA);
1509 *bp++ = htonl(vnode->fid.vid);
1510 *bp++ = htonl(vnode->fid.vnode);
1511 *bp++ = htonl(vnode->fid.unique);
1512
1513 xdr_encode_AFS_StoreStatus(&bp, attr);
1514
1515 *bp++ = 0; /* position of start of write */
1516 *bp++ = 0; /* size of write */
1517 *bp++ = htonl(attr->ia_size); /* new file length */
1518
1519 afs_use_fs_server(call, fc->cbi);
1520 trace_afs_make_fs_call(call, &vnode->fid);
1521 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1522}
1523
1524/*
1525 * set the attributes on a file, using FS.StoreData if there's a change in file
1526 * size, and FS.StoreStatus otherwise
1527 */
1528int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr)
1529{
1530 struct afs_vnode *vnode = fc->vnode;
1531 struct afs_call *call;
1532 struct afs_net *net = afs_v2net(vnode);
1533 __be32 *bp;
1534
1535 if (attr->ia_valid & ATTR_SIZE)
1536 return afs_fs_setattr_size(fc, attr);
1537
1538 _enter(",%x,{%x:%u},,",
1539 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1540
1541 call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus,
1542 (4 + 6) * 4,
1543 (21 + 6) * 4);
1544 if (!call)
1545 return -ENOMEM;
1546
1547 call->key = fc->key;
1548 call->reply[0] = vnode;
1549 call->expected_version = vnode->status.data_version;
1550
1551 /* marshall the parameters */
1552 bp = call->request;
1553 *bp++ = htonl(FSSTORESTATUS);
1554 *bp++ = htonl(vnode->fid.vid);
1555 *bp++ = htonl(vnode->fid.vnode);
1556 *bp++ = htonl(vnode->fid.unique);
1557
1558 xdr_encode_AFS_StoreStatus(&bp, attr);
1559
1560 afs_use_fs_server(call, fc->cbi);
1561 trace_afs_make_fs_call(call, &vnode->fid);
1562 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1563}
1564
1565/*
1566 * deliver reply data to an FS.GetVolumeStatus
1567 */
1568static int afs_deliver_fs_get_volume_status(struct afs_call *call)
1569{
1570 const __be32 *bp;
1571 char *p;
1572 int ret;
1573
1574 _enter("{%u}", call->unmarshall);
1575
1576 switch (call->unmarshall) {
1577 case 0:
1578 call->offset = 0;
1579 call->unmarshall++;
1580
1581 /* extract the returned status record */
1582 case 1:
1583 _debug("extract status");
1584 ret = afs_extract_data(call, call->buffer,
1585 12 * 4, true);
1586 if (ret < 0)
1587 return ret;
1588
1589 bp = call->buffer;
1590 xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]);
1591 call->offset = 0;
1592 call->unmarshall++;
1593
1594 /* extract the volume name length */
1595 case 2:
1596 ret = afs_extract_data(call, &call->tmp, 4, true);
1597 if (ret < 0)
1598 return ret;
1599
1600 call->count = ntohl(call->tmp);
1601 _debug("volname length: %u", call->count);
1602 if (call->count >= AFSNAMEMAX)
1603 return afs_protocol_error(call, -EBADMSG);
1604 call->offset = 0;
1605 call->unmarshall++;
1606
1607 /* extract the volume name */
1608 case 3:
1609 _debug("extract volname");
1610 if (call->count > 0) {
1611 ret = afs_extract_data(call, call->reply[2],
1612 call->count, true);
1613 if (ret < 0)
1614 return ret;
1615 }
1616
1617 p = call->reply[2];
1618 p[call->count] = 0;
1619 _debug("volname '%s'", p);
1620
1621 call->offset = 0;
1622 call->unmarshall++;
1623
1624 /* extract the volume name padding */
1625 if ((call->count & 3) == 0) {
1626 call->unmarshall++;
1627 goto no_volname_padding;
1628 }
1629 call->count = 4 - (call->count & 3);
1630
1631 case 4:
1632 ret = afs_extract_data(call, call->buffer,
1633 call->count, true);
1634 if (ret < 0)
1635 return ret;
1636
1637 call->offset = 0;
1638 call->unmarshall++;
1639 no_volname_padding:
1640
1641 /* extract the offline message length */
1642 case 5:
1643 ret = afs_extract_data(call, &call->tmp, 4, true);
1644 if (ret < 0)
1645 return ret;
1646
1647 call->count = ntohl(call->tmp);
1648 _debug("offline msg length: %u", call->count);
1649 if (call->count >= AFSNAMEMAX)
1650 return afs_protocol_error(call, -EBADMSG);
1651 call->offset = 0;
1652 call->unmarshall++;
1653
1654 /* extract the offline message */
1655 case 6:
1656 _debug("extract offline");
1657 if (call->count > 0) {
1658 ret = afs_extract_data(call, call->reply[2],
1659 call->count, true);
1660 if (ret < 0)
1661 return ret;
1662 }
1663
1664 p = call->reply[2];
1665 p[call->count] = 0;
1666 _debug("offline '%s'", p);
1667
1668 call->offset = 0;
1669 call->unmarshall++;
1670
1671 /* extract the offline message padding */
1672 if ((call->count & 3) == 0) {
1673 call->unmarshall++;
1674 goto no_offline_padding;
1675 }
1676 call->count = 4 - (call->count & 3);
1677
1678 case 7:
1679 ret = afs_extract_data(call, call->buffer,
1680 call->count, true);
1681 if (ret < 0)
1682 return ret;
1683
1684 call->offset = 0;
1685 call->unmarshall++;
1686 no_offline_padding:
1687
1688 /* extract the message of the day length */
1689 case 8:
1690 ret = afs_extract_data(call, &call->tmp, 4, true);
1691 if (ret < 0)
1692 return ret;
1693
1694 call->count = ntohl(call->tmp);
1695 _debug("motd length: %u", call->count);
1696 if (call->count >= AFSNAMEMAX)
1697 return afs_protocol_error(call, -EBADMSG);
1698 call->offset = 0;
1699 call->unmarshall++;
1700
1701 /* extract the message of the day */
1702 case 9:
1703 _debug("extract motd");
1704 if (call->count > 0) {
1705 ret = afs_extract_data(call, call->reply[2],
1706 call->count, true);
1707 if (ret < 0)
1708 return ret;
1709 }
1710
1711 p = call->reply[2];
1712 p[call->count] = 0;
1713 _debug("motd '%s'", p);
1714
1715 call->offset = 0;
1716 call->unmarshall++;
1717
1718 /* extract the message of the day padding */
1719 call->count = (4 - (call->count & 3)) & 3;
1720
1721 case 10:
1722 ret = afs_extract_data(call, call->buffer,
1723 call->count, false);
1724 if (ret < 0)
1725 return ret;
1726
1727 call->offset = 0;
1728 call->unmarshall++;
1729 case 11:
1730 break;
1731 }
1732
1733 _leave(" = 0 [done]");
1734 return 0;
1735}
1736
1737/*
1738 * destroy an FS.GetVolumeStatus call
1739 */
1740static void afs_get_volume_status_call_destructor(struct afs_call *call)
1741{
1742 kfree(call->reply[2]);
1743 call->reply[2] = NULL;
1744 afs_flat_call_destructor(call);
1745}
1746
1747/*
1748 * FS.GetVolumeStatus operation type
1749 */
1750static const struct afs_call_type afs_RXFSGetVolumeStatus = {
1751 .name = "FS.GetVolumeStatus",
1752 .op = afs_FS_GetVolumeStatus,
1753 .deliver = afs_deliver_fs_get_volume_status,
1754 .destructor = afs_get_volume_status_call_destructor,
1755};
1756
1757/*
1758 * fetch the status of a volume
1759 */
1760int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
1761 struct afs_volume_status *vs)
1762{
1763 struct afs_vnode *vnode = fc->vnode;
1764 struct afs_call *call;
1765 struct afs_net *net = afs_v2net(vnode);
1766 __be32 *bp;
1767 void *tmpbuf;
1768
1769 _enter("");
1770
1771 tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
1772 if (!tmpbuf)
1773 return -ENOMEM;
1774
1775 call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
1776 if (!call) {
1777 kfree(tmpbuf);
1778 return -ENOMEM;
1779 }
1780
1781 call->key = fc->key;
1782 call->reply[0] = vnode;
1783 call->reply[1] = vs;
1784 call->reply[2] = tmpbuf;
1785
1786 /* marshall the parameters */
1787 bp = call->request;
1788 bp[0] = htonl(FSGETVOLUMESTATUS);
1789 bp[1] = htonl(vnode->fid.vid);
1790
1791 afs_use_fs_server(call, fc->cbi);
1792 trace_afs_make_fs_call(call, &vnode->fid);
1793 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1794}
1795
1796/*
1797 * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
1798 */
1799static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
1800{
1801 const __be32 *bp;
1802 int ret;
1803
1804 _enter("{%u}", call->unmarshall);
1805
1806 ret = afs_transfer_reply(call);
1807 if (ret < 0)
1808 return ret;
1809
1810 /* unmarshall the reply once we've received all of it */
1811 bp = call->buffer;
1812 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1813
1814 _leave(" = 0 [done]");
1815 return 0;
1816}
1817
1818/*
1819 * FS.SetLock operation type
1820 */
1821static const struct afs_call_type afs_RXFSSetLock = {
1822 .name = "FS.SetLock",
1823 .op = afs_FS_SetLock,
1824 .deliver = afs_deliver_fs_xxxx_lock,
1825 .destructor = afs_flat_call_destructor,
1826};
1827
1828/*
1829 * FS.ExtendLock operation type
1830 */
1831static const struct afs_call_type afs_RXFSExtendLock = {
1832 .name = "FS.ExtendLock",
1833 .op = afs_FS_ExtendLock,
1834 .deliver = afs_deliver_fs_xxxx_lock,
1835 .destructor = afs_flat_call_destructor,
1836};
1837
1838/*
1839 * FS.ReleaseLock operation type
1840 */
1841static const struct afs_call_type afs_RXFSReleaseLock = {
1842 .name = "FS.ReleaseLock",
1843 .op = afs_FS_ReleaseLock,
1844 .deliver = afs_deliver_fs_xxxx_lock,
1845 .destructor = afs_flat_call_destructor,
1846};
1847
1848/*
1849 * Set a lock on a file
1850 */
1851int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type)
1852{
1853 struct afs_vnode *vnode = fc->vnode;
1854 struct afs_call *call;
1855 struct afs_net *net = afs_v2net(vnode);
1856 __be32 *bp;
1857
1858 _enter("");
1859
1860 call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
1861 if (!call)
1862 return -ENOMEM;
1863
1864 call->key = fc->key;
1865 call->reply[0] = vnode;
1866
1867 /* marshall the parameters */
1868 bp = call->request;
1869 *bp++ = htonl(FSSETLOCK);
1870 *bp++ = htonl(vnode->fid.vid);
1871 *bp++ = htonl(vnode->fid.vnode);
1872 *bp++ = htonl(vnode->fid.unique);
1873 *bp++ = htonl(type);
1874
1875 afs_use_fs_server(call, fc->cbi);
1876 trace_afs_make_fs_call(call, &vnode->fid);
1877 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1878}
1879
1880/*
1881 * extend a lock on a file
1882 */
1883int afs_fs_extend_lock(struct afs_fs_cursor *fc)
1884{
1885 struct afs_vnode *vnode = fc->vnode;
1886 struct afs_call *call;
1887 struct afs_net *net = afs_v2net(vnode);
1888 __be32 *bp;
1889
1890 _enter("");
1891
1892 call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
1893 if (!call)
1894 return -ENOMEM;
1895
1896 call->key = fc->key;
1897 call->reply[0] = vnode;
1898
1899 /* marshall the parameters */
1900 bp = call->request;
1901 *bp++ = htonl(FSEXTENDLOCK);
1902 *bp++ = htonl(vnode->fid.vid);
1903 *bp++ = htonl(vnode->fid.vnode);
1904 *bp++ = htonl(vnode->fid.unique);
1905
1906 afs_use_fs_server(call, fc->cbi);
1907 trace_afs_make_fs_call(call, &vnode->fid);
1908 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1909}
1910
1911/*
1912 * release a lock on a file
1913 */
1914int afs_fs_release_lock(struct afs_fs_cursor *fc)
1915{
1916 struct afs_vnode *vnode = fc->vnode;
1917 struct afs_call *call;
1918 struct afs_net *net = afs_v2net(vnode);
1919 __be32 *bp;
1920
1921 _enter("");
1922
1923 call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
1924 if (!call)
1925 return -ENOMEM;
1926
1927 call->key = fc->key;
1928 call->reply[0] = vnode;
1929
1930 /* marshall the parameters */
1931 bp = call->request;
1932 *bp++ = htonl(FSRELEASELOCK);
1933 *bp++ = htonl(vnode->fid.vid);
1934 *bp++ = htonl(vnode->fid.vnode);
1935 *bp++ = htonl(vnode->fid.unique);
1936
1937 afs_use_fs_server(call, fc->cbi);
1938 trace_afs_make_fs_call(call, &vnode->fid);
1939 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1940}
1941
1942/*
1943 * Deliver reply data to an FS.GiveUpAllCallBacks operation.
1944 */
1945static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
1946{
1947 return afs_transfer_reply(call);
1948}
1949
1950/*
1951 * FS.GiveUpAllCallBacks operation type
1952 */
1953static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
1954 .name = "FS.GiveUpAllCallBacks",
1955 .op = afs_FS_GiveUpAllCallBacks,
1956 .deliver = afs_deliver_fs_give_up_all_callbacks,
1957 .destructor = afs_flat_call_destructor,
1958};
1959
1960/*
1961 * Flush all the callbacks we have on a server.
1962 */
1963int afs_fs_give_up_all_callbacks(struct afs_net *net,
1964 struct afs_server *server,
1965 struct afs_addr_cursor *ac,
1966 struct key *key)
1967{
1968 struct afs_call *call;
1969 __be32 *bp;
1970
1971 _enter("");
1972
1973 call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
1974 if (!call)
1975 return -ENOMEM;
1976
1977 call->key = key;
1978
1979 /* marshall the parameters */
1980 bp = call->request;
1981 *bp++ = htonl(FSGIVEUPALLCALLBACKS);
1982
1983 /* Can't take a ref on server */
1984 return afs_make_call(ac, call, GFP_NOFS, false);
1985}
1986
1987/*
1988 * Deliver reply data to an FS.GetCapabilities operation.
1989 */
1990static int afs_deliver_fs_get_capabilities(struct afs_call *call)
1991{
1992 u32 count;
1993 int ret;
1994
1995 _enter("{%u,%zu/%u}", call->unmarshall, call->offset, call->count);
1996
1997again:
1998 switch (call->unmarshall) {
1999 case 0:
2000 call->offset = 0;
2001 call->unmarshall++;
2002
2003 /* Extract the capabilities word count */
2004 case 1:
2005 ret = afs_extract_data(call, &call->tmp,
2006 1 * sizeof(__be32),
2007 true);
2008 if (ret < 0)
2009 return ret;
2010
2011 count = ntohl(call->tmp);
2012
2013 call->count = count;
2014 call->count2 = count;
2015 call->offset = 0;
2016 call->unmarshall++;
2017
2018 /* Extract capabilities words */
2019 case 2:
2020 count = min(call->count, 16U);
2021 ret = afs_extract_data(call, call->buffer,
2022 count * sizeof(__be32),
2023 call->count > 16);
2024 if (ret < 0)
2025 return ret;
2026
2027 /* TODO: Examine capabilities */
2028
2029 call->count -= count;
2030 if (call->count > 0)
2031 goto again;
2032 call->offset = 0;
2033 call->unmarshall++;
2034 break;
2035 }
2036
2037 _leave(" = 0 [done]");
2038 return 0;
2039}
2040
2041/*
2042 * FS.GetCapabilities operation type
2043 */
2044static const struct afs_call_type afs_RXFSGetCapabilities = {
2045 .name = "FS.GetCapabilities",
2046 .op = afs_FS_GetCapabilities,
2047 .deliver = afs_deliver_fs_get_capabilities,
2048 .destructor = afs_flat_call_destructor,
2049};
2050
2051/*
2052 * Probe a fileserver for the capabilities that it supports. This can
2053 * return up to 196 words.
2054 */
2055int afs_fs_get_capabilities(struct afs_net *net,
2056 struct afs_server *server,
2057 struct afs_addr_cursor *ac,
2058 struct key *key)
2059{
2060 struct afs_call *call;
2061 __be32 *bp;
2062
2063 _enter("");
2064
2065 call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
2066 if (!call)
2067 return -ENOMEM;
2068
2069 call->key = key;
2070
2071 /* marshall the parameters */
2072 bp = call->request;
2073 *bp++ = htonl(FSGETCAPABILITIES);
2074
2075 /* Can't take a ref on server */
2076 trace_afs_make_fs_call(call, NULL);
2077 return afs_make_call(ac, call, GFP_NOFS, false);
2078}
2079
2080/*
2081 * Deliver reply data to an FS.FetchStatus with no vnode.
2082 */
2083static int afs_deliver_fs_fetch_status(struct afs_call *call)
2084{
2085 struct afs_file_status *status = call->reply[1];
2086 struct afs_callback *callback = call->reply[2];
2087 struct afs_volsync *volsync = call->reply[3];
2088 struct afs_vnode *vnode = call->reply[0];
2089 const __be32 *bp;
2090 int ret;
2091
2092 ret = afs_transfer_reply(call);
2093 if (ret < 0)
2094 return ret;
2095
2096 _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
2097
2098 /* unmarshall the reply once we've received all of it */
2099 bp = call->buffer;
2100 xdr_decode_AFSFetchStatus(call, &bp, status, vnode,
2101 &call->expected_version, NULL);
2102 callback[call->count].version = ntohl(bp[0]);
2103 callback[call->count].expiry = ntohl(bp[1]);
2104 callback[call->count].type = ntohl(bp[2]);
2105 if (vnode)
2106 xdr_decode_AFSCallBack(call, vnode, &bp);
2107 else
2108 bp += 3;
2109 if (volsync)
2110 xdr_decode_AFSVolSync(&bp, volsync);
2111
2112 _leave(" = 0 [done]");
2113 return 0;
2114}
2115
2116/*
2117 * FS.FetchStatus operation type
2118 */
2119static const struct afs_call_type afs_RXFSFetchStatus = {
2120 .name = "FS.FetchStatus",
2121 .op = afs_FS_FetchStatus,
2122 .deliver = afs_deliver_fs_fetch_status,
2123 .destructor = afs_flat_call_destructor,
2124};
2125
2126/*
2127 * Fetch the status information for a fid without needing a vnode handle.
2128 */
2129int afs_fs_fetch_status(struct afs_fs_cursor *fc,
2130 struct afs_net *net,
2131 struct afs_fid *fid,
2132 struct afs_file_status *status,
2133 struct afs_callback *callback,
2134 struct afs_volsync *volsync)
2135{
2136 struct afs_call *call;
2137 __be32 *bp;
2138
2139 _enter(",%x,{%x:%u},,",
2140 key_serial(fc->key), fid->vid, fid->vnode);
2141
2142 call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
2143 if (!call) {
2144 fc->ac.error = -ENOMEM;
2145 return -ENOMEM;
2146 }
2147
2148 call->key = fc->key;
2149 call->reply[0] = NULL; /* vnode for fid[0] */
2150 call->reply[1] = status;
2151 call->reply[2] = callback;
2152 call->reply[3] = volsync;
2153 call->expected_version = 1; /* vnode->status.data_version */
2154
2155 /* marshall the parameters */
2156 bp = call->request;
2157 bp[0] = htonl(FSFETCHSTATUS);
2158 bp[1] = htonl(fid->vid);
2159 bp[2] = htonl(fid->vnode);
2160 bp[3] = htonl(fid->unique);
2161
2162 call->cb_break = fc->cb_break;
2163 afs_use_fs_server(call, fc->cbi);
2164 trace_afs_make_fs_call(call, fid);
2165 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
2166}
2167
2168/*
2169 * Deliver reply data to an FS.InlineBulkStatus call
2170 */
2171static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
2172{
2173 struct afs_file_status *statuses;
2174 struct afs_callback *callbacks;
2175 struct afs_vnode *vnode = call->reply[0];
2176 const __be32 *bp;
2177 u32 tmp;
2178 int ret;
2179
2180 _enter("{%u}", call->unmarshall);
2181
2182 switch (call->unmarshall) {
2183 case 0:
2184 call->offset = 0;
2185 call->unmarshall++;
2186
2187 /* Extract the file status count and array in two steps */
2188 case 1:
2189 _debug("extract status count");
2190 ret = afs_extract_data(call, &call->tmp, 4, true);
2191 if (ret < 0)
2192 return ret;
2193
2194 tmp = ntohl(call->tmp);
2195 _debug("status count: %u/%u", tmp, call->count2);
2196 if (tmp != call->count2)
2197 return afs_protocol_error(call, -EBADMSG);
2198
2199 call->count = 0;
2200 call->unmarshall++;
2201 more_counts:
2202 call->offset = 0;
2203
2204 case 2:
2205 _debug("extract status array %u", call->count);
2206 ret = afs_extract_data(call, call->buffer, 21 * 4, true);
2207 if (ret < 0)
2208 return ret;
2209
2210 bp = call->buffer;
2211 statuses = call->reply[1];
2212 if (xdr_decode_AFSFetchStatus(call, &bp, &statuses[call->count],
2213 call->count == 0 ? vnode : NULL,
2214 NULL, NULL) < 0)
2215 return afs_protocol_error(call, -EBADMSG);
2216
2217 call->count++;
2218 if (call->count < call->count2)
2219 goto more_counts;
2220
2221 call->count = 0;
2222 call->unmarshall++;
2223 call->offset = 0;
2224
2225 /* Extract the callback count and array in two steps */
2226 case 3:
2227 _debug("extract CB count");
2228 ret = afs_extract_data(call, &call->tmp, 4, true);
2229 if (ret < 0)
2230 return ret;
2231
2232 tmp = ntohl(call->tmp);
2233 _debug("CB count: %u", tmp);
2234 if (tmp != call->count2)
2235 return afs_protocol_error(call, -EBADMSG);
2236 call->count = 0;
2237 call->unmarshall++;
2238 more_cbs:
2239 call->offset = 0;
2240
2241 case 4:
2242 _debug("extract CB array");
2243 ret = afs_extract_data(call, call->buffer, 3 * 4, true);
2244 if (ret < 0)
2245 return ret;
2246
2247 _debug("unmarshall CB array");
2248 bp = call->buffer;
2249 callbacks = call->reply[2];
2250 callbacks[call->count].version = ntohl(bp[0]);
2251 callbacks[call->count].expiry = ntohl(bp[1]);
2252 callbacks[call->count].type = ntohl(bp[2]);
2253 statuses = call->reply[1];
2254 if (call->count == 0 && vnode && statuses[0].abort_code == 0)
2255 xdr_decode_AFSCallBack(call, vnode, &bp);
2256 call->count++;
2257 if (call->count < call->count2)
2258 goto more_cbs;
2259
2260 call->offset = 0;
2261 call->unmarshall++;
2262
2263 case 5:
2264 ret = afs_extract_data(call, call->buffer, 6 * 4, false);
2265 if (ret < 0)
2266 return ret;
2267
2268 bp = call->buffer;
2269 if (call->reply[3])
2270 xdr_decode_AFSVolSync(&bp, call->reply[3]);
2271
2272 call->offset = 0;
2273 call->unmarshall++;
2274
2275 case 6:
2276 break;
2277 }
2278
2279 _leave(" = 0 [done]");
2280 return 0;
2281}
2282
2283/*
2284 * FS.InlineBulkStatus operation type
2285 */
2286static const struct afs_call_type afs_RXFSInlineBulkStatus = {
2287 .name = "FS.InlineBulkStatus",
2288 .op = afs_FS_InlineBulkStatus,
2289 .deliver = afs_deliver_fs_inline_bulk_status,
2290 .destructor = afs_flat_call_destructor,
2291};
2292
2293/*
2294 * Fetch the status information for up to 50 files
2295 */
2296int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
2297 struct afs_net *net,
2298 struct afs_fid *fids,
2299 struct afs_file_status *statuses,
2300 struct afs_callback *callbacks,
2301 unsigned int nr_fids,
2302 struct afs_volsync *volsync)
2303{
2304 struct afs_call *call;
2305 __be32 *bp;
2306 int i;
2307
2308 _enter(",%x,{%x:%u},%u",
2309 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
2310
2311 call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus,
2312 (2 + nr_fids * 3) * 4,
2313 21 * 4);
2314 if (!call) {
2315 fc->ac.error = -ENOMEM;
2316 return -ENOMEM;
2317 }
2318
2319 call->key = fc->key;
2320 call->reply[0] = NULL; /* vnode for fid[0] */
2321 call->reply[1] = statuses;
2322 call->reply[2] = callbacks;
2323 call->reply[3] = volsync;
2324 call->count2 = nr_fids;
2325
2326 /* marshall the parameters */
2327 bp = call->request;
2328 *bp++ = htonl(FSINLINEBULKSTATUS);
2329 *bp++ = htonl(nr_fids);
2330 for (i = 0; i < nr_fids; i++) {
2331 *bp++ = htonl(fids[i].vid);
2332 *bp++ = htonl(fids[i].vnode);
2333 *bp++ = htonl(fids[i].unique);
2334 }
2335
2336 call->cb_break = fc->cb_break;
2337 afs_use_fs_server(call, fc->cbi);
2338 trace_afs_make_fs_call(call, &fids[0]);
2339 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
2340}
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 "internal.h"
14#include "afs_fs.h"
15#include "xdr_fs.h"
16
17/*
18 * decode an AFSFid block
19 */
20static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
21{
22 const __be32 *bp = *_bp;
23
24 fid->vid = ntohl(*bp++);
25 fid->vnode = ntohl(*bp++);
26 fid->unique = ntohl(*bp++);
27 *_bp = bp;
28}
29
30/*
31 * Dump a bad file status record.
32 */
33static void xdr_dump_bad(const __be32 *bp)
34{
35 __be32 x[4];
36 int i;
37
38 pr_notice("AFS XDR: Bad status record\n");
39 for (i = 0; i < 5 * 4 * 4; i += 16) {
40 memcpy(x, bp, 16);
41 bp += 4;
42 pr_notice("%03x: %08x %08x %08x %08x\n",
43 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
44 }
45
46 memcpy(x, bp, 4);
47 pr_notice("0x50: %08x\n", ntohl(x[0]));
48}
49
50/*
51 * decode an AFSFetchStatus block
52 */
53static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
54 struct afs_call *call,
55 struct afs_status_cb *scb)
56{
57 const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
58 struct afs_file_status *status = &scb->status;
59 bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
60 u64 data_version, size;
61 u32 type, abort_code;
62
63 abort_code = ntohl(xdr->abort_code);
64
65 if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
66 if (xdr->if_version == htonl(0) &&
67 abort_code != 0 &&
68 inline_error) {
69 /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
70 * whereby it doesn't set the interface version in the error
71 * case.
72 */
73 status->abort_code = abort_code;
74 scb->have_error = true;
75 goto advance;
76 }
77
78 pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
79 goto bad;
80 }
81
82 if (abort_code != 0 && inline_error) {
83 status->abort_code = abort_code;
84 scb->have_error = true;
85 goto advance;
86 }
87
88 type = ntohl(xdr->type);
89 switch (type) {
90 case AFS_FTYPE_FILE:
91 case AFS_FTYPE_DIR:
92 case AFS_FTYPE_SYMLINK:
93 status->type = type;
94 break;
95 default:
96 goto bad;
97 }
98
99 status->nlink = ntohl(xdr->nlink);
100 status->author = ntohl(xdr->author);
101 status->owner = ntohl(xdr->owner);
102 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
103 status->anon_access = ntohl(xdr->anon_access);
104 status->mode = ntohl(xdr->mode) & S_IALLUGO;
105 status->group = ntohl(xdr->group);
106 status->lock_count = ntohl(xdr->lock_count);
107
108 status->mtime_client.tv_sec = ntohl(xdr->mtime_client);
109 status->mtime_client.tv_nsec = 0;
110 status->mtime_server.tv_sec = ntohl(xdr->mtime_server);
111 status->mtime_server.tv_nsec = 0;
112
113 size = (u64)ntohl(xdr->size_lo);
114 size |= (u64)ntohl(xdr->size_hi) << 32;
115 status->size = size;
116
117 data_version = (u64)ntohl(xdr->data_version_lo);
118 data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
119 status->data_version = data_version;
120 scb->have_status = true;
121advance:
122 *_bp = (const void *)*_bp + sizeof(*xdr);
123 return;
124
125bad:
126 xdr_dump_bad(*_bp);
127 afs_protocol_error(call, afs_eproto_bad_status);
128 goto advance;
129}
130
131static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
132{
133 return ktime_divns(call->reply_time, NSEC_PER_SEC) + expiry;
134}
135
136static void xdr_decode_AFSCallBack(const __be32 **_bp,
137 struct afs_call *call,
138 struct afs_status_cb *scb)
139{
140 struct afs_callback *cb = &scb->callback;
141 const __be32 *bp = *_bp;
142
143 bp++; /* version */
144 cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++));
145 bp++; /* type */
146 scb->have_cb = true;
147 *_bp = bp;
148}
149
150/*
151 * decode an AFSVolSync block
152 */
153static void xdr_decode_AFSVolSync(const __be32 **_bp,
154 struct afs_volsync *volsync)
155{
156 const __be32 *bp = *_bp;
157 u32 creation;
158
159 creation = ntohl(*bp++);
160 bp++; /* spare2 */
161 bp++; /* spare3 */
162 bp++; /* spare4 */
163 bp++; /* spare5 */
164 bp++; /* spare6 */
165 *_bp = bp;
166
167 if (volsync)
168 volsync->creation = creation;
169}
170
171/*
172 * encode the requested attributes into an AFSStoreStatus block
173 */
174static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
175{
176 __be32 *bp = *_bp;
177 u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
178
179 mask = 0;
180 if (attr->ia_valid & ATTR_MTIME) {
181 mask |= AFS_SET_MTIME;
182 mtime = attr->ia_mtime.tv_sec;
183 }
184
185 if (attr->ia_valid & ATTR_UID) {
186 mask |= AFS_SET_OWNER;
187 owner = from_kuid(&init_user_ns, attr->ia_uid);
188 }
189
190 if (attr->ia_valid & ATTR_GID) {
191 mask |= AFS_SET_GROUP;
192 group = from_kgid(&init_user_ns, attr->ia_gid);
193 }
194
195 if (attr->ia_valid & ATTR_MODE) {
196 mask |= AFS_SET_MODE;
197 mode = attr->ia_mode & S_IALLUGO;
198 }
199
200 *bp++ = htonl(mask);
201 *bp++ = htonl(mtime);
202 *bp++ = htonl(owner);
203 *bp++ = htonl(group);
204 *bp++ = htonl(mode);
205 *bp++ = 0; /* segment size */
206 *_bp = bp;
207}
208
209/*
210 * decode an AFSFetchVolumeStatus block
211 */
212static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
213 struct afs_volume_status *vs)
214{
215 const __be32 *bp = *_bp;
216
217 vs->vid = ntohl(*bp++);
218 vs->parent_id = ntohl(*bp++);
219 vs->online = ntohl(*bp++);
220 vs->in_service = ntohl(*bp++);
221 vs->blessed = ntohl(*bp++);
222 vs->needs_salvage = ntohl(*bp++);
223 vs->type = ntohl(*bp++);
224 vs->min_quota = ntohl(*bp++);
225 vs->max_quota = ntohl(*bp++);
226 vs->blocks_in_use = ntohl(*bp++);
227 vs->part_blocks_avail = ntohl(*bp++);
228 vs->part_max_blocks = ntohl(*bp++);
229 vs->vol_copy_date = 0;
230 vs->vol_backup_date = 0;
231 *_bp = bp;
232}
233
234/*
235 * deliver reply data to an FS.FetchStatus
236 */
237static int afs_deliver_fs_fetch_status(struct afs_call *call)
238{
239 struct afs_operation *op = call->op;
240 struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
241 const __be32 *bp;
242 int ret;
243
244 ret = afs_transfer_reply(call);
245 if (ret < 0)
246 return ret;
247
248 /* unmarshall the reply once we've received all of it */
249 bp = call->buffer;
250 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
251 xdr_decode_AFSCallBack(&bp, call, &vp->scb);
252 xdr_decode_AFSVolSync(&bp, &op->volsync);
253
254 _leave(" = 0 [done]");
255 return 0;
256}
257
258/*
259 * FS.FetchStatus operation type
260 */
261static const struct afs_call_type afs_RXFSFetchStatus = {
262 .name = "FS.FetchStatus",
263 .op = afs_FS_FetchStatus,
264 .deliver = afs_deliver_fs_fetch_status,
265 .destructor = afs_flat_call_destructor,
266};
267
268/*
269 * fetch the status information for a file
270 */
271void afs_fs_fetch_status(struct afs_operation *op)
272{
273 struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
274 struct afs_call *call;
275 __be32 *bp;
276
277 _enter(",%x,{%llx:%llu},,",
278 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
279
280 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchStatus,
281 16, (21 + 3 + 6) * 4);
282 if (!call)
283 return afs_op_nomem(op);
284
285 /* marshall the parameters */
286 bp = call->request;
287 bp[0] = htonl(FSFETCHSTATUS);
288 bp[1] = htonl(vp->fid.vid);
289 bp[2] = htonl(vp->fid.vnode);
290 bp[3] = htonl(vp->fid.unique);
291
292 trace_afs_make_fs_call(call, &vp->fid);
293 afs_make_op_call(op, call, GFP_NOFS);
294}
295
296/*
297 * deliver reply data to an FS.FetchData
298 */
299static int afs_deliver_fs_fetch_data(struct afs_call *call)
300{
301 struct afs_operation *op = call->op;
302 struct afs_vnode_param *vp = &op->file[0];
303 struct afs_read *req = op->fetch.req;
304 const __be32 *bp;
305 unsigned int size;
306 int ret;
307
308 _enter("{%u,%zu/%llu}",
309 call->unmarshall, iov_iter_count(call->iter), req->actual_len);
310
311 switch (call->unmarshall) {
312 case 0:
313 req->actual_len = 0;
314 req->index = 0;
315 req->offset = req->pos & (PAGE_SIZE - 1);
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 */
326 case 1:
327 _debug("extract data length");
328 ret = afs_extract_data(call, true);
329 if (ret < 0)
330 return ret;
331
332 req->actual_len = be64_to_cpu(call->tmp64);
333 _debug("DATA length: %llu", req->actual_len);
334 req->remain = min(req->len, req->actual_len);
335 if (req->remain == 0)
336 goto no_more_data;
337
338 call->unmarshall++;
339
340 begin_page:
341 ASSERTCMP(req->index, <, req->nr_pages);
342 if (req->remain > PAGE_SIZE - req->offset)
343 size = PAGE_SIZE - req->offset;
344 else
345 size = req->remain;
346 call->bvec[0].bv_len = size;
347 call->bvec[0].bv_offset = req->offset;
348 call->bvec[0].bv_page = req->pages[req->index];
349 iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
350 ASSERTCMP(size, <=, PAGE_SIZE);
351 fallthrough;
352
353 /* extract the returned data */
354 case 2:
355 _debug("extract data %zu/%llu",
356 iov_iter_count(call->iter), req->remain);
357
358 ret = afs_extract_data(call, true);
359 if (ret < 0)
360 return ret;
361 req->remain -= call->bvec[0].bv_len;
362 req->offset += call->bvec[0].bv_len;
363 ASSERTCMP(req->offset, <=, PAGE_SIZE);
364 if (req->offset == PAGE_SIZE) {
365 req->offset = 0;
366 req->index++;
367 if (req->remain > 0)
368 goto begin_page;
369 }
370
371 ASSERTCMP(req->remain, ==, 0);
372 if (req->actual_len <= req->len)
373 goto no_more_data;
374
375 /* Discard any excess data the server gave us */
376 afs_extract_discard(call, req->actual_len - req->len);
377 call->unmarshall = 3;
378 fallthrough;
379
380 case 3:
381 _debug("extract discard %zu/%llu",
382 iov_iter_count(call->iter), req->actual_len - req->len);
383
384 ret = afs_extract_data(call, true);
385 if (ret < 0)
386 return ret;
387
388 no_more_data:
389 call->unmarshall = 4;
390 afs_extract_to_buf(call, (21 + 3 + 6) * 4);
391 fallthrough;
392
393 /* extract the metadata */
394 case 4:
395 ret = afs_extract_data(call, false);
396 if (ret < 0)
397 return ret;
398
399 bp = call->buffer;
400 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
401 xdr_decode_AFSCallBack(&bp, call, &vp->scb);
402 xdr_decode_AFSVolSync(&bp, &op->volsync);
403
404 req->data_version = vp->scb.status.data_version;
405 req->file_size = vp->scb.status.size;
406
407 call->unmarshall++;
408
409 case 5:
410 break;
411 }
412
413 for (; req->index < req->nr_pages; req->index++) {
414 if (req->offset < PAGE_SIZE)
415 zero_user_segment(req->pages[req->index],
416 req->offset, PAGE_SIZE);
417 req->offset = 0;
418 }
419
420 if (req->page_done)
421 for (req->index = 0; req->index < req->nr_pages; req->index++)
422 req->page_done(req);
423
424 _leave(" = 0 [done]");
425 return 0;
426}
427
428/*
429 * FS.FetchData operation type
430 */
431static const struct afs_call_type afs_RXFSFetchData = {
432 .name = "FS.FetchData",
433 .op = afs_FS_FetchData,
434 .deliver = afs_deliver_fs_fetch_data,
435 .destructor = afs_flat_call_destructor,
436};
437
438static const struct afs_call_type afs_RXFSFetchData64 = {
439 .name = "FS.FetchData64",
440 .op = afs_FS_FetchData64,
441 .deliver = afs_deliver_fs_fetch_data,
442 .destructor = afs_flat_call_destructor,
443};
444
445/*
446 * fetch data from a very large file
447 */
448static void afs_fs_fetch_data64(struct afs_operation *op)
449{
450 struct afs_vnode_param *vp = &op->file[0];
451 struct afs_read *req = op->fetch.req;
452 struct afs_call *call;
453 __be32 *bp;
454
455 _enter("");
456
457 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
458 if (!call)
459 return afs_op_nomem(op);
460
461 /* marshall the parameters */
462 bp = call->request;
463 bp[0] = htonl(FSFETCHDATA64);
464 bp[1] = htonl(vp->fid.vid);
465 bp[2] = htonl(vp->fid.vnode);
466 bp[3] = htonl(vp->fid.unique);
467 bp[4] = htonl(upper_32_bits(req->pos));
468 bp[5] = htonl(lower_32_bits(req->pos));
469 bp[6] = 0;
470 bp[7] = htonl(lower_32_bits(req->len));
471
472 trace_afs_make_fs_call(call, &vp->fid);
473 afs_make_op_call(op, call, GFP_NOFS);
474}
475
476/*
477 * fetch data from a file
478 */
479void afs_fs_fetch_data(struct afs_operation *op)
480{
481 struct afs_vnode_param *vp = &op->file[0];
482 struct afs_call *call;
483 struct afs_read *req = op->fetch.req;
484 __be32 *bp;
485
486 if (upper_32_bits(req->pos) ||
487 upper_32_bits(req->len) ||
488 upper_32_bits(req->pos + req->len))
489 return afs_fs_fetch_data64(op);
490
491 _enter("");
492
493 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
494 if (!call)
495 return afs_op_nomem(op);
496
497 /* marshall the parameters */
498 bp = call->request;
499 bp[0] = htonl(FSFETCHDATA);
500 bp[1] = htonl(vp->fid.vid);
501 bp[2] = htonl(vp->fid.vnode);
502 bp[3] = htonl(vp->fid.unique);
503 bp[4] = htonl(lower_32_bits(req->pos));
504 bp[5] = htonl(lower_32_bits(req->len));
505
506 trace_afs_make_fs_call(call, &vp->fid);
507 afs_make_op_call(op, call, GFP_NOFS);
508}
509
510/*
511 * deliver reply data to an FS.CreateFile or an FS.MakeDir
512 */
513static int afs_deliver_fs_create_vnode(struct afs_call *call)
514{
515 struct afs_operation *op = call->op;
516 struct afs_vnode_param *dvp = &op->file[0];
517 struct afs_vnode_param *vp = &op->file[1];
518 const __be32 *bp;
519 int ret;
520
521 ret = afs_transfer_reply(call);
522 if (ret < 0)
523 return ret;
524
525 /* unmarshall the reply once we've received all of it */
526 bp = call->buffer;
527 xdr_decode_AFSFid(&bp, &op->file[1].fid);
528 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
529 xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
530 xdr_decode_AFSCallBack(&bp, call, &vp->scb);
531 xdr_decode_AFSVolSync(&bp, &op->volsync);
532
533 _leave(" = 0 [done]");
534 return 0;
535}
536
537/*
538 * FS.CreateFile and FS.MakeDir operation type
539 */
540static const struct afs_call_type afs_RXFSCreateFile = {
541 .name = "FS.CreateFile",
542 .op = afs_FS_CreateFile,
543 .deliver = afs_deliver_fs_create_vnode,
544 .destructor = afs_flat_call_destructor,
545};
546
547/*
548 * Create a file.
549 */
550void afs_fs_create_file(struct afs_operation *op)
551{
552 const struct qstr *name = &op->dentry->d_name;
553 struct afs_vnode_param *dvp = &op->file[0];
554 struct afs_call *call;
555 size_t namesz, reqsz, padsz;
556 __be32 *bp;
557
558 _enter("");
559
560 namesz = name->len;
561 padsz = (4 - (namesz & 3)) & 3;
562 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
563
564 call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile,
565 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
566 if (!call)
567 return afs_op_nomem(op);
568
569 /* marshall the parameters */
570 bp = call->request;
571 *bp++ = htonl(FSCREATEFILE);
572 *bp++ = htonl(dvp->fid.vid);
573 *bp++ = htonl(dvp->fid.vnode);
574 *bp++ = htonl(dvp->fid.unique);
575 *bp++ = htonl(namesz);
576 memcpy(bp, name->name, namesz);
577 bp = (void *) bp + namesz;
578 if (padsz > 0) {
579 memset(bp, 0, padsz);
580 bp = (void *) bp + padsz;
581 }
582 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
583 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
584 *bp++ = 0; /* owner */
585 *bp++ = 0; /* group */
586 *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
587 *bp++ = 0; /* segment size */
588
589 trace_afs_make_fs_call1(call, &dvp->fid, name);
590 afs_make_op_call(op, call, GFP_NOFS);
591}
592
593static const struct afs_call_type afs_RXFSMakeDir = {
594 .name = "FS.MakeDir",
595 .op = afs_FS_MakeDir,
596 .deliver = afs_deliver_fs_create_vnode,
597 .destructor = afs_flat_call_destructor,
598};
599
600/*
601 * Create a new directory
602 */
603void afs_fs_make_dir(struct afs_operation *op)
604{
605 const struct qstr *name = &op->dentry->d_name;
606 struct afs_vnode_param *dvp = &op->file[0];
607 struct afs_call *call;
608 size_t namesz, reqsz, padsz;
609 __be32 *bp;
610
611 _enter("");
612
613 namesz = name->len;
614 padsz = (4 - (namesz & 3)) & 3;
615 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
616
617 call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir,
618 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
619 if (!call)
620 return afs_op_nomem(op);
621
622 /* marshall the parameters */
623 bp = call->request;
624 *bp++ = htonl(FSMAKEDIR);
625 *bp++ = htonl(dvp->fid.vid);
626 *bp++ = htonl(dvp->fid.vnode);
627 *bp++ = htonl(dvp->fid.unique);
628 *bp++ = htonl(namesz);
629 memcpy(bp, name->name, namesz);
630 bp = (void *) bp + namesz;
631 if (padsz > 0) {
632 memset(bp, 0, padsz);
633 bp = (void *) bp + padsz;
634 }
635 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
636 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
637 *bp++ = 0; /* owner */
638 *bp++ = 0; /* group */
639 *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
640 *bp++ = 0; /* segment size */
641
642 trace_afs_make_fs_call1(call, &dvp->fid, name);
643 afs_make_op_call(op, call, GFP_NOFS);
644}
645
646/*
647 * Deliver reply data to any operation that returns status and volume sync.
648 */
649static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
650{
651 struct afs_operation *op = call->op;
652 struct afs_vnode_param *vp = &op->file[0];
653 const __be32 *bp;
654 int ret;
655
656 ret = afs_transfer_reply(call);
657 if (ret < 0)
658 return ret;
659
660 /* unmarshall the reply once we've received all of it */
661 bp = call->buffer;
662 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
663 xdr_decode_AFSVolSync(&bp, &op->volsync);
664
665 _leave(" = 0 [done]");
666 return 0;
667}
668
669/*
670 * FS.RemoveFile operation type
671 */
672static const struct afs_call_type afs_RXFSRemoveFile = {
673 .name = "FS.RemoveFile",
674 .op = afs_FS_RemoveFile,
675 .deliver = afs_deliver_fs_file_status_and_vol,
676 .destructor = afs_flat_call_destructor,
677};
678
679/*
680 * Remove a file.
681 */
682void afs_fs_remove_file(struct afs_operation *op)
683{
684 const struct qstr *name = &op->dentry->d_name;
685 struct afs_vnode_param *dvp = &op->file[0];
686 struct afs_call *call;
687 size_t namesz, reqsz, padsz;
688 __be32 *bp;
689
690 _enter("");
691
692 namesz = name->len;
693 padsz = (4 - (namesz & 3)) & 3;
694 reqsz = (5 * 4) + namesz + padsz;
695
696 call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile,
697 reqsz, (21 + 6) * 4);
698 if (!call)
699 return afs_op_nomem(op);
700
701 /* marshall the parameters */
702 bp = call->request;
703 *bp++ = htonl(FSREMOVEFILE);
704 *bp++ = htonl(dvp->fid.vid);
705 *bp++ = htonl(dvp->fid.vnode);
706 *bp++ = htonl(dvp->fid.unique);
707 *bp++ = htonl(namesz);
708 memcpy(bp, name->name, namesz);
709 bp = (void *) bp + namesz;
710 if (padsz > 0) {
711 memset(bp, 0, padsz);
712 bp = (void *) bp + padsz;
713 }
714
715 trace_afs_make_fs_call1(call, &dvp->fid, name);
716 afs_make_op_call(op, call, GFP_NOFS);
717}
718
719static const struct afs_call_type afs_RXFSRemoveDir = {
720 .name = "FS.RemoveDir",
721 .op = afs_FS_RemoveDir,
722 .deliver = afs_deliver_fs_file_status_and_vol,
723 .destructor = afs_flat_call_destructor,
724};
725
726/*
727 * Remove a directory.
728 */
729void afs_fs_remove_dir(struct afs_operation *op)
730{
731 const struct qstr *name = &op->dentry->d_name;
732 struct afs_vnode_param *dvp = &op->file[0];
733 struct afs_call *call;
734 size_t namesz, reqsz, padsz;
735 __be32 *bp;
736
737 _enter("");
738
739 namesz = name->len;
740 padsz = (4 - (namesz & 3)) & 3;
741 reqsz = (5 * 4) + namesz + padsz;
742
743 call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir,
744 reqsz, (21 + 6) * 4);
745 if (!call)
746 return afs_op_nomem(op);
747
748 /* marshall the parameters */
749 bp = call->request;
750 *bp++ = htonl(FSREMOVEDIR);
751 *bp++ = htonl(dvp->fid.vid);
752 *bp++ = htonl(dvp->fid.vnode);
753 *bp++ = htonl(dvp->fid.unique);
754 *bp++ = htonl(namesz);
755 memcpy(bp, name->name, namesz);
756 bp = (void *) bp + namesz;
757 if (padsz > 0) {
758 memset(bp, 0, padsz);
759 bp = (void *) bp + padsz;
760 }
761
762 trace_afs_make_fs_call1(call, &dvp->fid, name);
763 afs_make_op_call(op, call, GFP_NOFS);
764}
765
766/*
767 * deliver reply data to an FS.Link
768 */
769static int afs_deliver_fs_link(struct afs_call *call)
770{
771 struct afs_operation *op = call->op;
772 struct afs_vnode_param *dvp = &op->file[0];
773 struct afs_vnode_param *vp = &op->file[1];
774 const __be32 *bp;
775 int ret;
776
777 _enter("{%u}", call->unmarshall);
778
779 ret = afs_transfer_reply(call);
780 if (ret < 0)
781 return ret;
782
783 /* unmarshall the reply once we've received all of it */
784 bp = call->buffer;
785 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
786 xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
787 xdr_decode_AFSVolSync(&bp, &op->volsync);
788
789 _leave(" = 0 [done]");
790 return 0;
791}
792
793/*
794 * FS.Link operation type
795 */
796static const struct afs_call_type afs_RXFSLink = {
797 .name = "FS.Link",
798 .op = afs_FS_Link,
799 .deliver = afs_deliver_fs_link,
800 .destructor = afs_flat_call_destructor,
801};
802
803/*
804 * make a hard link
805 */
806void afs_fs_link(struct afs_operation *op)
807{
808 const struct qstr *name = &op->dentry->d_name;
809 struct afs_vnode_param *dvp = &op->file[0];
810 struct afs_vnode_param *vp = &op->file[1];
811 struct afs_call *call;
812 size_t namesz, reqsz, padsz;
813 __be32 *bp;
814
815 _enter("");
816
817 namesz = name->len;
818 padsz = (4 - (namesz & 3)) & 3;
819 reqsz = (5 * 4) + namesz + padsz + (3 * 4);
820
821 call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
822 if (!call)
823 return afs_op_nomem(op);
824
825 /* marshall the parameters */
826 bp = call->request;
827 *bp++ = htonl(FSLINK);
828 *bp++ = htonl(dvp->fid.vid);
829 *bp++ = htonl(dvp->fid.vnode);
830 *bp++ = htonl(dvp->fid.unique);
831 *bp++ = htonl(namesz);
832 memcpy(bp, name->name, namesz);
833 bp = (void *) bp + namesz;
834 if (padsz > 0) {
835 memset(bp, 0, padsz);
836 bp = (void *) bp + padsz;
837 }
838 *bp++ = htonl(vp->fid.vid);
839 *bp++ = htonl(vp->fid.vnode);
840 *bp++ = htonl(vp->fid.unique);
841
842 trace_afs_make_fs_call1(call, &vp->fid, name);
843 afs_make_op_call(op, call, GFP_NOFS);
844}
845
846/*
847 * deliver reply data to an FS.Symlink
848 */
849static int afs_deliver_fs_symlink(struct afs_call *call)
850{
851 struct afs_operation *op = call->op;
852 struct afs_vnode_param *dvp = &op->file[0];
853 struct afs_vnode_param *vp = &op->file[1];
854 const __be32 *bp;
855 int ret;
856
857 _enter("{%u}", call->unmarshall);
858
859 ret = afs_transfer_reply(call);
860 if (ret < 0)
861 return ret;
862
863 /* unmarshall the reply once we've received all of it */
864 bp = call->buffer;
865 xdr_decode_AFSFid(&bp, &vp->fid);
866 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
867 xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
868 xdr_decode_AFSVolSync(&bp, &op->volsync);
869
870 _leave(" = 0 [done]");
871 return 0;
872}
873
874/*
875 * FS.Symlink operation type
876 */
877static const struct afs_call_type afs_RXFSSymlink = {
878 .name = "FS.Symlink",
879 .op = afs_FS_Symlink,
880 .deliver = afs_deliver_fs_symlink,
881 .destructor = afs_flat_call_destructor,
882};
883
884/*
885 * create a symbolic link
886 */
887void afs_fs_symlink(struct afs_operation *op)
888{
889 const struct qstr *name = &op->dentry->d_name;
890 struct afs_vnode_param *dvp = &op->file[0];
891 struct afs_call *call;
892 size_t namesz, reqsz, padsz, c_namesz, c_padsz;
893 __be32 *bp;
894
895 _enter("");
896
897 namesz = name->len;
898 padsz = (4 - (namesz & 3)) & 3;
899
900 c_namesz = strlen(op->create.symlink);
901 c_padsz = (4 - (c_namesz & 3)) & 3;
902
903 reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
904
905 call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz,
906 (3 + 21 + 21 + 6) * 4);
907 if (!call)
908 return afs_op_nomem(op);
909
910 /* marshall the parameters */
911 bp = call->request;
912 *bp++ = htonl(FSSYMLINK);
913 *bp++ = htonl(dvp->fid.vid);
914 *bp++ = htonl(dvp->fid.vnode);
915 *bp++ = htonl(dvp->fid.unique);
916 *bp++ = htonl(namesz);
917 memcpy(bp, name->name, namesz);
918 bp = (void *) bp + namesz;
919 if (padsz > 0) {
920 memset(bp, 0, padsz);
921 bp = (void *) bp + padsz;
922 }
923 *bp++ = htonl(c_namesz);
924 memcpy(bp, op->create.symlink, c_namesz);
925 bp = (void *) bp + c_namesz;
926 if (c_padsz > 0) {
927 memset(bp, 0, c_padsz);
928 bp = (void *) bp + c_padsz;
929 }
930 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
931 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
932 *bp++ = 0; /* owner */
933 *bp++ = 0; /* group */
934 *bp++ = htonl(S_IRWXUGO); /* unix mode */
935 *bp++ = 0; /* segment size */
936
937 trace_afs_make_fs_call1(call, &dvp->fid, name);
938 afs_make_op_call(op, call, GFP_NOFS);
939}
940
941/*
942 * deliver reply data to an FS.Rename
943 */
944static int afs_deliver_fs_rename(struct afs_call *call)
945{
946 struct afs_operation *op = call->op;
947 struct afs_vnode_param *orig_dvp = &op->file[0];
948 struct afs_vnode_param *new_dvp = &op->file[1];
949 const __be32 *bp;
950 int ret;
951
952 ret = afs_transfer_reply(call);
953 if (ret < 0)
954 return ret;
955
956 bp = call->buffer;
957 /* If the two dirs are the same, we have two copies of the same status
958 * report, so we just decode it twice.
959 */
960 xdr_decode_AFSFetchStatus(&bp, call, &orig_dvp->scb);
961 xdr_decode_AFSFetchStatus(&bp, call, &new_dvp->scb);
962 xdr_decode_AFSVolSync(&bp, &op->volsync);
963
964 _leave(" = 0 [done]");
965 return 0;
966}
967
968/*
969 * FS.Rename operation type
970 */
971static const struct afs_call_type afs_RXFSRename = {
972 .name = "FS.Rename",
973 .op = afs_FS_Rename,
974 .deliver = afs_deliver_fs_rename,
975 .destructor = afs_flat_call_destructor,
976};
977
978/*
979 * Rename/move a file or directory.
980 */
981void afs_fs_rename(struct afs_operation *op)
982{
983 struct afs_vnode_param *orig_dvp = &op->file[0];
984 struct afs_vnode_param *new_dvp = &op->file[1];
985 const struct qstr *orig_name = &op->dentry->d_name;
986 const struct qstr *new_name = &op->dentry_2->d_name;
987 struct afs_call *call;
988 size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
989 __be32 *bp;
990
991 _enter("");
992
993 o_namesz = orig_name->len;
994 o_padsz = (4 - (o_namesz & 3)) & 3;
995
996 n_namesz = new_name->len;
997 n_padsz = (4 - (n_namesz & 3)) & 3;
998
999 reqsz = (4 * 4) +
1000 4 + o_namesz + o_padsz +
1001 (3 * 4) +
1002 4 + n_namesz + n_padsz;
1003
1004 call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
1005 if (!call)
1006 return afs_op_nomem(op);
1007
1008 /* marshall the parameters */
1009 bp = call->request;
1010 *bp++ = htonl(FSRENAME);
1011 *bp++ = htonl(orig_dvp->fid.vid);
1012 *bp++ = htonl(orig_dvp->fid.vnode);
1013 *bp++ = htonl(orig_dvp->fid.unique);
1014 *bp++ = htonl(o_namesz);
1015 memcpy(bp, orig_name->name, o_namesz);
1016 bp = (void *) bp + o_namesz;
1017 if (o_padsz > 0) {
1018 memset(bp, 0, o_padsz);
1019 bp = (void *) bp + o_padsz;
1020 }
1021
1022 *bp++ = htonl(new_dvp->fid.vid);
1023 *bp++ = htonl(new_dvp->fid.vnode);
1024 *bp++ = htonl(new_dvp->fid.unique);
1025 *bp++ = htonl(n_namesz);
1026 memcpy(bp, new_name->name, n_namesz);
1027 bp = (void *) bp + n_namesz;
1028 if (n_padsz > 0) {
1029 memset(bp, 0, n_padsz);
1030 bp = (void *) bp + n_padsz;
1031 }
1032
1033 trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
1034 afs_make_op_call(op, call, GFP_NOFS);
1035}
1036
1037/*
1038 * Deliver reply data to FS.StoreData or FS.StoreStatus
1039 */
1040static int afs_deliver_fs_store_data(struct afs_call *call)
1041{
1042 struct afs_operation *op = call->op;
1043 struct afs_vnode_param *vp = &op->file[0];
1044 const __be32 *bp;
1045 int ret;
1046
1047 _enter("");
1048
1049 ret = afs_transfer_reply(call);
1050 if (ret < 0)
1051 return ret;
1052
1053 /* unmarshall the reply once we've received all of it */
1054 bp = call->buffer;
1055 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
1056 xdr_decode_AFSVolSync(&bp, &op->volsync);
1057
1058 _leave(" = 0 [done]");
1059 return 0;
1060}
1061
1062/*
1063 * FS.StoreData operation type
1064 */
1065static const struct afs_call_type afs_RXFSStoreData = {
1066 .name = "FS.StoreData",
1067 .op = afs_FS_StoreData,
1068 .deliver = afs_deliver_fs_store_data,
1069 .destructor = afs_flat_call_destructor,
1070};
1071
1072static const struct afs_call_type afs_RXFSStoreData64 = {
1073 .name = "FS.StoreData64",
1074 .op = afs_FS_StoreData64,
1075 .deliver = afs_deliver_fs_store_data,
1076 .destructor = afs_flat_call_destructor,
1077};
1078
1079/*
1080 * store a set of pages to a very large file
1081 */
1082static void afs_fs_store_data64(struct afs_operation *op,
1083 loff_t pos, loff_t size, loff_t i_size)
1084{
1085 struct afs_vnode_param *vp = &op->file[0];
1086 struct afs_call *call;
1087 __be32 *bp;
1088
1089 _enter(",%x,{%llx:%llu},,",
1090 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1091
1092 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64,
1093 (4 + 6 + 3 * 2) * 4,
1094 (21 + 6) * 4);
1095 if (!call)
1096 return afs_op_nomem(op);
1097
1098 call->send_pages = true;
1099
1100 /* marshall the parameters */
1101 bp = call->request;
1102 *bp++ = htonl(FSSTOREDATA64);
1103 *bp++ = htonl(vp->fid.vid);
1104 *bp++ = htonl(vp->fid.vnode);
1105 *bp++ = htonl(vp->fid.unique);
1106
1107 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1108 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
1109 *bp++ = 0; /* owner */
1110 *bp++ = 0; /* group */
1111 *bp++ = 0; /* unix mode */
1112 *bp++ = 0; /* segment size */
1113
1114 *bp++ = htonl(upper_32_bits(pos));
1115 *bp++ = htonl(lower_32_bits(pos));
1116 *bp++ = htonl(upper_32_bits(size));
1117 *bp++ = htonl(lower_32_bits(size));
1118 *bp++ = htonl(upper_32_bits(i_size));
1119 *bp++ = htonl(lower_32_bits(i_size));
1120
1121 trace_afs_make_fs_call(call, &vp->fid);
1122 afs_make_op_call(op, call, GFP_NOFS);
1123}
1124
1125/*
1126 * store a set of pages
1127 */
1128void afs_fs_store_data(struct afs_operation *op)
1129{
1130 struct afs_vnode_param *vp = &op->file[0];
1131 struct afs_call *call;
1132 loff_t size, pos, i_size;
1133 __be32 *bp;
1134
1135 _enter(",%x,{%llx:%llu},,",
1136 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1137
1138 size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
1139 if (op->store.first != op->store.last)
1140 size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
1141 pos = (loff_t)op->store.first << PAGE_SHIFT;
1142 pos += op->store.first_offset;
1143
1144 i_size = i_size_read(&vp->vnode->vfs_inode);
1145 if (pos + size > i_size)
1146 i_size = size + pos;
1147
1148 _debug("size %llx, at %llx, i_size %llx",
1149 (unsigned long long) size, (unsigned long long) pos,
1150 (unsigned long long) i_size);
1151
1152 if (upper_32_bits(pos) || upper_32_bits(i_size) || upper_32_bits(size) ||
1153 upper_32_bits(pos + size))
1154 return afs_fs_store_data64(op, pos, size, i_size);
1155
1156 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData,
1157 (4 + 6 + 3) * 4,
1158 (21 + 6) * 4);
1159 if (!call)
1160 return afs_op_nomem(op);
1161
1162 call->send_pages = true;
1163
1164 /* marshall the parameters */
1165 bp = call->request;
1166 *bp++ = htonl(FSSTOREDATA);
1167 *bp++ = htonl(vp->fid.vid);
1168 *bp++ = htonl(vp->fid.vnode);
1169 *bp++ = htonl(vp->fid.unique);
1170
1171 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1172 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
1173 *bp++ = 0; /* owner */
1174 *bp++ = 0; /* group */
1175 *bp++ = 0; /* unix mode */
1176 *bp++ = 0; /* segment size */
1177
1178 *bp++ = htonl(lower_32_bits(pos));
1179 *bp++ = htonl(lower_32_bits(size));
1180 *bp++ = htonl(lower_32_bits(i_size));
1181
1182 trace_afs_make_fs_call(call, &vp->fid);
1183 afs_make_op_call(op, call, GFP_NOFS);
1184}
1185
1186/*
1187 * FS.StoreStatus operation type
1188 */
1189static const struct afs_call_type afs_RXFSStoreStatus = {
1190 .name = "FS.StoreStatus",
1191 .op = afs_FS_StoreStatus,
1192 .deliver = afs_deliver_fs_store_data,
1193 .destructor = afs_flat_call_destructor,
1194};
1195
1196static const struct afs_call_type afs_RXFSStoreData_as_Status = {
1197 .name = "FS.StoreData",
1198 .op = afs_FS_StoreData,
1199 .deliver = afs_deliver_fs_store_data,
1200 .destructor = afs_flat_call_destructor,
1201};
1202
1203static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
1204 .name = "FS.StoreData64",
1205 .op = afs_FS_StoreData64,
1206 .deliver = afs_deliver_fs_store_data,
1207 .destructor = afs_flat_call_destructor,
1208};
1209
1210/*
1211 * set the attributes on a very large file, using FS.StoreData rather than
1212 * FS.StoreStatus so as to alter the file size also
1213 */
1214static void afs_fs_setattr_size64(struct afs_operation *op)
1215{
1216 struct afs_vnode_param *vp = &op->file[0];
1217 struct afs_call *call;
1218 struct iattr *attr = op->setattr.attr;
1219 __be32 *bp;
1220
1221 _enter(",%x,{%llx:%llu},,",
1222 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1223
1224 ASSERT(attr->ia_valid & ATTR_SIZE);
1225
1226 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status,
1227 (4 + 6 + 3 * 2) * 4,
1228 (21 + 6) * 4);
1229 if (!call)
1230 return afs_op_nomem(op);
1231
1232 /* marshall the parameters */
1233 bp = call->request;
1234 *bp++ = htonl(FSSTOREDATA64);
1235 *bp++ = htonl(vp->fid.vid);
1236 *bp++ = htonl(vp->fid.vnode);
1237 *bp++ = htonl(vp->fid.unique);
1238
1239 xdr_encode_AFS_StoreStatus(&bp, attr);
1240
1241 *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */
1242 *bp++ = htonl(lower_32_bits(attr->ia_size));
1243 *bp++ = 0; /* size of write */
1244 *bp++ = 0;
1245 *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */
1246 *bp++ = htonl(lower_32_bits(attr->ia_size));
1247
1248 trace_afs_make_fs_call(call, &vp->fid);
1249 afs_make_op_call(op, call, GFP_NOFS);
1250}
1251
1252/*
1253 * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
1254 * so as to alter the file size also
1255 */
1256static void afs_fs_setattr_size(struct afs_operation *op)
1257{
1258 struct afs_vnode_param *vp = &op->file[0];
1259 struct afs_call *call;
1260 struct iattr *attr = op->setattr.attr;
1261 __be32 *bp;
1262
1263 _enter(",%x,{%llx:%llu},,",
1264 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1265
1266 ASSERT(attr->ia_valid & ATTR_SIZE);
1267 if (upper_32_bits(attr->ia_size))
1268 return afs_fs_setattr_size64(op);
1269
1270 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status,
1271 (4 + 6 + 3) * 4,
1272 (21 + 6) * 4);
1273 if (!call)
1274 return afs_op_nomem(op);
1275
1276 /* marshall the parameters */
1277 bp = call->request;
1278 *bp++ = htonl(FSSTOREDATA);
1279 *bp++ = htonl(vp->fid.vid);
1280 *bp++ = htonl(vp->fid.vnode);
1281 *bp++ = htonl(vp->fid.unique);
1282
1283 xdr_encode_AFS_StoreStatus(&bp, attr);
1284
1285 *bp++ = htonl(attr->ia_size); /* position of start of write */
1286 *bp++ = 0; /* size of write */
1287 *bp++ = htonl(attr->ia_size); /* new file length */
1288
1289 trace_afs_make_fs_call(call, &vp->fid);
1290 afs_make_op_call(op, call, GFP_NOFS);
1291}
1292
1293/*
1294 * set the attributes on a file, using FS.StoreData if there's a change in file
1295 * size, and FS.StoreStatus otherwise
1296 */
1297void afs_fs_setattr(struct afs_operation *op)
1298{
1299 struct afs_vnode_param *vp = &op->file[0];
1300 struct afs_call *call;
1301 struct iattr *attr = op->setattr.attr;
1302 __be32 *bp;
1303
1304 if (attr->ia_valid & ATTR_SIZE)
1305 return afs_fs_setattr_size(op);
1306
1307 _enter(",%x,{%llx:%llu},,",
1308 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1309
1310 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreStatus,
1311 (4 + 6) * 4,
1312 (21 + 6) * 4);
1313 if (!call)
1314 return afs_op_nomem(op);
1315
1316 /* marshall the parameters */
1317 bp = call->request;
1318 *bp++ = htonl(FSSTORESTATUS);
1319 *bp++ = htonl(vp->fid.vid);
1320 *bp++ = htonl(vp->fid.vnode);
1321 *bp++ = htonl(vp->fid.unique);
1322
1323 xdr_encode_AFS_StoreStatus(&bp, op->setattr.attr);
1324
1325 trace_afs_make_fs_call(call, &vp->fid);
1326 afs_make_op_call(op, call, GFP_NOFS);
1327}
1328
1329/*
1330 * deliver reply data to an FS.GetVolumeStatus
1331 */
1332static int afs_deliver_fs_get_volume_status(struct afs_call *call)
1333{
1334 struct afs_operation *op = call->op;
1335 const __be32 *bp;
1336 char *p;
1337 u32 size;
1338 int ret;
1339
1340 _enter("{%u}", call->unmarshall);
1341
1342 switch (call->unmarshall) {
1343 case 0:
1344 call->unmarshall++;
1345 afs_extract_to_buf(call, 12 * 4);
1346 fallthrough;
1347
1348 /* extract the returned status record */
1349 case 1:
1350 _debug("extract status");
1351 ret = afs_extract_data(call, true);
1352 if (ret < 0)
1353 return ret;
1354
1355 bp = call->buffer;
1356 xdr_decode_AFSFetchVolumeStatus(&bp, &op->volstatus.vs);
1357 call->unmarshall++;
1358 afs_extract_to_tmp(call);
1359 fallthrough;
1360
1361 /* extract the volume name length */
1362 case 2:
1363 ret = afs_extract_data(call, true);
1364 if (ret < 0)
1365 return ret;
1366
1367 call->count = ntohl(call->tmp);
1368 _debug("volname length: %u", call->count);
1369 if (call->count >= AFSNAMEMAX)
1370 return afs_protocol_error(call, afs_eproto_volname_len);
1371 size = (call->count + 3) & ~3; /* It's padded */
1372 afs_extract_to_buf(call, size);
1373 call->unmarshall++;
1374 fallthrough;
1375
1376 /* extract the volume name */
1377 case 3:
1378 _debug("extract volname");
1379 ret = afs_extract_data(call, true);
1380 if (ret < 0)
1381 return ret;
1382
1383 p = call->buffer;
1384 p[call->count] = 0;
1385 _debug("volname '%s'", p);
1386 afs_extract_to_tmp(call);
1387 call->unmarshall++;
1388 fallthrough;
1389
1390 /* extract the offline message length */
1391 case 4:
1392 ret = afs_extract_data(call, true);
1393 if (ret < 0)
1394 return ret;
1395
1396 call->count = ntohl(call->tmp);
1397 _debug("offline msg length: %u", call->count);
1398 if (call->count >= AFSNAMEMAX)
1399 return afs_protocol_error(call, afs_eproto_offline_msg_len);
1400 size = (call->count + 3) & ~3; /* It's padded */
1401 afs_extract_to_buf(call, size);
1402 call->unmarshall++;
1403 fallthrough;
1404
1405 /* extract the offline message */
1406 case 5:
1407 _debug("extract offline");
1408 ret = afs_extract_data(call, true);
1409 if (ret < 0)
1410 return ret;
1411
1412 p = call->buffer;
1413 p[call->count] = 0;
1414 _debug("offline '%s'", p);
1415
1416 afs_extract_to_tmp(call);
1417 call->unmarshall++;
1418 fallthrough;
1419
1420 /* extract the message of the day length */
1421 case 6:
1422 ret = afs_extract_data(call, true);
1423 if (ret < 0)
1424 return ret;
1425
1426 call->count = ntohl(call->tmp);
1427 _debug("motd length: %u", call->count);
1428 if (call->count >= AFSNAMEMAX)
1429 return afs_protocol_error(call, afs_eproto_motd_len);
1430 size = (call->count + 3) & ~3; /* It's padded */
1431 afs_extract_to_buf(call, size);
1432 call->unmarshall++;
1433 fallthrough;
1434
1435 /* extract the message of the day */
1436 case 7:
1437 _debug("extract motd");
1438 ret = afs_extract_data(call, false);
1439 if (ret < 0)
1440 return ret;
1441
1442 p = call->buffer;
1443 p[call->count] = 0;
1444 _debug("motd '%s'", p);
1445
1446 call->unmarshall++;
1447
1448 case 8:
1449 break;
1450 }
1451
1452 _leave(" = 0 [done]");
1453 return 0;
1454}
1455
1456/*
1457 * FS.GetVolumeStatus operation type
1458 */
1459static const struct afs_call_type afs_RXFSGetVolumeStatus = {
1460 .name = "FS.GetVolumeStatus",
1461 .op = afs_FS_GetVolumeStatus,
1462 .deliver = afs_deliver_fs_get_volume_status,
1463 .destructor = afs_flat_call_destructor,
1464};
1465
1466/*
1467 * fetch the status of a volume
1468 */
1469void afs_fs_get_volume_status(struct afs_operation *op)
1470{
1471 struct afs_vnode_param *vp = &op->file[0];
1472 struct afs_call *call;
1473 __be32 *bp;
1474
1475 _enter("");
1476
1477 call = afs_alloc_flat_call(op->net, &afs_RXFSGetVolumeStatus, 2 * 4,
1478 max(12 * 4, AFSOPAQUEMAX + 1));
1479 if (!call)
1480 return afs_op_nomem(op);
1481
1482 /* marshall the parameters */
1483 bp = call->request;
1484 bp[0] = htonl(FSGETVOLUMESTATUS);
1485 bp[1] = htonl(vp->fid.vid);
1486
1487 trace_afs_make_fs_call(call, &vp->fid);
1488 afs_make_op_call(op, call, GFP_NOFS);
1489}
1490
1491/*
1492 * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
1493 */
1494static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
1495{
1496 struct afs_operation *op = call->op;
1497 const __be32 *bp;
1498 int ret;
1499
1500 _enter("{%u}", call->unmarshall);
1501
1502 ret = afs_transfer_reply(call);
1503 if (ret < 0)
1504 return ret;
1505
1506 /* unmarshall the reply once we've received all of it */
1507 bp = call->buffer;
1508 xdr_decode_AFSVolSync(&bp, &op->volsync);
1509
1510 _leave(" = 0 [done]");
1511 return 0;
1512}
1513
1514/*
1515 * FS.SetLock operation type
1516 */
1517static const struct afs_call_type afs_RXFSSetLock = {
1518 .name = "FS.SetLock",
1519 .op = afs_FS_SetLock,
1520 .deliver = afs_deliver_fs_xxxx_lock,
1521 .done = afs_lock_op_done,
1522 .destructor = afs_flat_call_destructor,
1523};
1524
1525/*
1526 * FS.ExtendLock operation type
1527 */
1528static const struct afs_call_type afs_RXFSExtendLock = {
1529 .name = "FS.ExtendLock",
1530 .op = afs_FS_ExtendLock,
1531 .deliver = afs_deliver_fs_xxxx_lock,
1532 .done = afs_lock_op_done,
1533 .destructor = afs_flat_call_destructor,
1534};
1535
1536/*
1537 * FS.ReleaseLock operation type
1538 */
1539static const struct afs_call_type afs_RXFSReleaseLock = {
1540 .name = "FS.ReleaseLock",
1541 .op = afs_FS_ReleaseLock,
1542 .deliver = afs_deliver_fs_xxxx_lock,
1543 .destructor = afs_flat_call_destructor,
1544};
1545
1546/*
1547 * Set a lock on a file
1548 */
1549void afs_fs_set_lock(struct afs_operation *op)
1550{
1551 struct afs_vnode_param *vp = &op->file[0];
1552 struct afs_call *call;
1553 __be32 *bp;
1554
1555 _enter("");
1556
1557 call = afs_alloc_flat_call(op->net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
1558 if (!call)
1559 return afs_op_nomem(op);
1560
1561 /* marshall the parameters */
1562 bp = call->request;
1563 *bp++ = htonl(FSSETLOCK);
1564 *bp++ = htonl(vp->fid.vid);
1565 *bp++ = htonl(vp->fid.vnode);
1566 *bp++ = htonl(vp->fid.unique);
1567 *bp++ = htonl(op->lock.type);
1568
1569 trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
1570 afs_make_op_call(op, call, GFP_NOFS);
1571}
1572
1573/*
1574 * extend a lock on a file
1575 */
1576void afs_fs_extend_lock(struct afs_operation *op)
1577{
1578 struct afs_vnode_param *vp = &op->file[0];
1579 struct afs_call *call;
1580 __be32 *bp;
1581
1582 _enter("");
1583
1584 call = afs_alloc_flat_call(op->net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
1585 if (!call)
1586 return afs_op_nomem(op);
1587
1588 /* marshall the parameters */
1589 bp = call->request;
1590 *bp++ = htonl(FSEXTENDLOCK);
1591 *bp++ = htonl(vp->fid.vid);
1592 *bp++ = htonl(vp->fid.vnode);
1593 *bp++ = htonl(vp->fid.unique);
1594
1595 trace_afs_make_fs_call(call, &vp->fid);
1596 afs_make_op_call(op, call, GFP_NOFS);
1597}
1598
1599/*
1600 * release a lock on a file
1601 */
1602void afs_fs_release_lock(struct afs_operation *op)
1603{
1604 struct afs_vnode_param *vp = &op->file[0];
1605 struct afs_call *call;
1606 __be32 *bp;
1607
1608 _enter("");
1609
1610 call = afs_alloc_flat_call(op->net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
1611 if (!call)
1612 return afs_op_nomem(op);
1613
1614 /* marshall the parameters */
1615 bp = call->request;
1616 *bp++ = htonl(FSRELEASELOCK);
1617 *bp++ = htonl(vp->fid.vid);
1618 *bp++ = htonl(vp->fid.vnode);
1619 *bp++ = htonl(vp->fid.unique);
1620
1621 trace_afs_make_fs_call(call, &vp->fid);
1622 afs_make_op_call(op, call, GFP_NOFS);
1623}
1624
1625/*
1626 * Deliver reply data to an FS.GiveUpAllCallBacks operation.
1627 */
1628static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
1629{
1630 return afs_transfer_reply(call);
1631}
1632
1633/*
1634 * FS.GiveUpAllCallBacks operation type
1635 */
1636static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
1637 .name = "FS.GiveUpAllCallBacks",
1638 .op = afs_FS_GiveUpAllCallBacks,
1639 .deliver = afs_deliver_fs_give_up_all_callbacks,
1640 .destructor = afs_flat_call_destructor,
1641};
1642
1643/*
1644 * Flush all the callbacks we have on a server.
1645 */
1646int afs_fs_give_up_all_callbacks(struct afs_net *net,
1647 struct afs_server *server,
1648 struct afs_addr_cursor *ac,
1649 struct key *key)
1650{
1651 struct afs_call *call;
1652 __be32 *bp;
1653
1654 _enter("");
1655
1656 call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
1657 if (!call)
1658 return -ENOMEM;
1659
1660 call->key = key;
1661
1662 /* marshall the parameters */
1663 bp = call->request;
1664 *bp++ = htonl(FSGIVEUPALLCALLBACKS);
1665
1666 call->server = afs_use_server(server, afs_server_trace_give_up_cb);
1667 afs_make_call(ac, call, GFP_NOFS);
1668 return afs_wait_for_call_to_complete(call, ac);
1669}
1670
1671/*
1672 * Deliver reply data to an FS.GetCapabilities operation.
1673 */
1674static int afs_deliver_fs_get_capabilities(struct afs_call *call)
1675{
1676 u32 count;
1677 int ret;
1678
1679 _enter("{%u,%zu}", call->unmarshall, iov_iter_count(call->iter));
1680
1681 switch (call->unmarshall) {
1682 case 0:
1683 afs_extract_to_tmp(call);
1684 call->unmarshall++;
1685 fallthrough;
1686
1687 /* Extract the capabilities word count */
1688 case 1:
1689 ret = afs_extract_data(call, true);
1690 if (ret < 0)
1691 return ret;
1692
1693 count = ntohl(call->tmp);
1694
1695 call->count = count;
1696 call->count2 = count;
1697 afs_extract_discard(call, count * sizeof(__be32));
1698 call->unmarshall++;
1699 fallthrough;
1700
1701 /* Extract capabilities words */
1702 case 2:
1703 ret = afs_extract_data(call, false);
1704 if (ret < 0)
1705 return ret;
1706
1707 /* TODO: Examine capabilities */
1708
1709 call->unmarshall++;
1710 break;
1711 }
1712
1713 _leave(" = 0 [done]");
1714 return 0;
1715}
1716
1717/*
1718 * FS.GetCapabilities operation type
1719 */
1720static const struct afs_call_type afs_RXFSGetCapabilities = {
1721 .name = "FS.GetCapabilities",
1722 .op = afs_FS_GetCapabilities,
1723 .deliver = afs_deliver_fs_get_capabilities,
1724 .done = afs_fileserver_probe_result,
1725 .destructor = afs_flat_call_destructor,
1726};
1727
1728/*
1729 * Probe a fileserver for the capabilities that it supports. This RPC can
1730 * reply with up to 196 words. The operation is asynchronous and if we managed
1731 * to allocate a call, true is returned the result is delivered through the
1732 * ->done() - otherwise we return false to indicate we didn't even try.
1733 */
1734bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server,
1735 struct afs_addr_cursor *ac, struct key *key)
1736{
1737 struct afs_call *call;
1738 __be32 *bp;
1739
1740 _enter("");
1741
1742 call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
1743 if (!call)
1744 return false;
1745
1746 call->key = key;
1747 call->server = afs_use_server(server, afs_server_trace_get_caps);
1748 call->upgrade = true;
1749 call->async = true;
1750 call->max_lifespan = AFS_PROBE_MAX_LIFESPAN;
1751
1752 /* marshall the parameters */
1753 bp = call->request;
1754 *bp++ = htonl(FSGETCAPABILITIES);
1755
1756 trace_afs_make_fs_call(call, NULL);
1757 afs_make_call(ac, call, GFP_NOFS);
1758 afs_put_call(call);
1759 return true;
1760}
1761
1762/*
1763 * Deliver reply data to an FS.InlineBulkStatus call
1764 */
1765static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
1766{
1767 struct afs_operation *op = call->op;
1768 struct afs_status_cb *scb;
1769 const __be32 *bp;
1770 u32 tmp;
1771 int ret;
1772
1773 _enter("{%u}", call->unmarshall);
1774
1775 switch (call->unmarshall) {
1776 case 0:
1777 afs_extract_to_tmp(call);
1778 call->unmarshall++;
1779 fallthrough;
1780
1781 /* Extract the file status count and array in two steps */
1782 case 1:
1783 _debug("extract status count");
1784 ret = afs_extract_data(call, true);
1785 if (ret < 0)
1786 return ret;
1787
1788 tmp = ntohl(call->tmp);
1789 _debug("status count: %u/%u", tmp, op->nr_files);
1790 if (tmp != op->nr_files)
1791 return afs_protocol_error(call, afs_eproto_ibulkst_count);
1792
1793 call->count = 0;
1794 call->unmarshall++;
1795 more_counts:
1796 afs_extract_to_buf(call, 21 * sizeof(__be32));
1797 fallthrough;
1798
1799 case 2:
1800 _debug("extract status array %u", call->count);
1801 ret = afs_extract_data(call, true);
1802 if (ret < 0)
1803 return ret;
1804
1805 switch (call->count) {
1806 case 0:
1807 scb = &op->file[0].scb;
1808 break;
1809 case 1:
1810 scb = &op->file[1].scb;
1811 break;
1812 default:
1813 scb = &op->more_files[call->count - 2].scb;
1814 break;
1815 }
1816
1817 bp = call->buffer;
1818 xdr_decode_AFSFetchStatus(&bp, call, scb);
1819
1820 call->count++;
1821 if (call->count < op->nr_files)
1822 goto more_counts;
1823
1824 call->count = 0;
1825 call->unmarshall++;
1826 afs_extract_to_tmp(call);
1827 fallthrough;
1828
1829 /* Extract the callback count and array in two steps */
1830 case 3:
1831 _debug("extract CB count");
1832 ret = afs_extract_data(call, true);
1833 if (ret < 0)
1834 return ret;
1835
1836 tmp = ntohl(call->tmp);
1837 _debug("CB count: %u", tmp);
1838 if (tmp != op->nr_files)
1839 return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
1840 call->count = 0;
1841 call->unmarshall++;
1842 more_cbs:
1843 afs_extract_to_buf(call, 3 * sizeof(__be32));
1844 fallthrough;
1845
1846 case 4:
1847 _debug("extract CB array");
1848 ret = afs_extract_data(call, true);
1849 if (ret < 0)
1850 return ret;
1851
1852 _debug("unmarshall CB array");
1853 switch (call->count) {
1854 case 0:
1855 scb = &op->file[0].scb;
1856 break;
1857 case 1:
1858 scb = &op->file[1].scb;
1859 break;
1860 default:
1861 scb = &op->more_files[call->count - 2].scb;
1862 break;
1863 }
1864
1865 bp = call->buffer;
1866 xdr_decode_AFSCallBack(&bp, call, scb);
1867 call->count++;
1868 if (call->count < op->nr_files)
1869 goto more_cbs;
1870
1871 afs_extract_to_buf(call, 6 * sizeof(__be32));
1872 call->unmarshall++;
1873 fallthrough;
1874
1875 case 5:
1876 ret = afs_extract_data(call, false);
1877 if (ret < 0)
1878 return ret;
1879
1880 bp = call->buffer;
1881 xdr_decode_AFSVolSync(&bp, &op->volsync);
1882
1883 call->unmarshall++;
1884
1885 case 6:
1886 break;
1887 }
1888
1889 _leave(" = 0 [done]");
1890 return 0;
1891}
1892
1893static void afs_done_fs_inline_bulk_status(struct afs_call *call)
1894{
1895 if (call->error == -ECONNABORTED &&
1896 call->abort_code == RX_INVALID_OPERATION) {
1897 set_bit(AFS_SERVER_FL_NO_IBULK, &call->server->flags);
1898 if (call->op)
1899 set_bit(AFS_VOLUME_MAYBE_NO_IBULK, &call->op->volume->flags);
1900 }
1901}
1902
1903/*
1904 * FS.InlineBulkStatus operation type
1905 */
1906static const struct afs_call_type afs_RXFSInlineBulkStatus = {
1907 .name = "FS.InlineBulkStatus",
1908 .op = afs_FS_InlineBulkStatus,
1909 .deliver = afs_deliver_fs_inline_bulk_status,
1910 .done = afs_done_fs_inline_bulk_status,
1911 .destructor = afs_flat_call_destructor,
1912};
1913
1914/*
1915 * Fetch the status information for up to 50 files
1916 */
1917void afs_fs_inline_bulk_status(struct afs_operation *op)
1918{
1919 struct afs_vnode_param *dvp = &op->file[0];
1920 struct afs_vnode_param *vp = &op->file[1];
1921 struct afs_call *call;
1922 __be32 *bp;
1923 int i;
1924
1925 if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) {
1926 op->error = -ENOTSUPP;
1927 return;
1928 }
1929
1930 _enter(",%x,{%llx:%llu},%u",
1931 key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
1932
1933 call = afs_alloc_flat_call(op->net, &afs_RXFSInlineBulkStatus,
1934 (2 + op->nr_files * 3) * 4,
1935 21 * 4);
1936 if (!call)
1937 return afs_op_nomem(op);
1938
1939 /* marshall the parameters */
1940 bp = call->request;
1941 *bp++ = htonl(FSINLINEBULKSTATUS);
1942 *bp++ = htonl(op->nr_files);
1943 *bp++ = htonl(dvp->fid.vid);
1944 *bp++ = htonl(dvp->fid.vnode);
1945 *bp++ = htonl(dvp->fid.unique);
1946 *bp++ = htonl(vp->fid.vid);
1947 *bp++ = htonl(vp->fid.vnode);
1948 *bp++ = htonl(vp->fid.unique);
1949 for (i = 0; i < op->nr_files - 2; i++) {
1950 *bp++ = htonl(op->more_files[i].fid.vid);
1951 *bp++ = htonl(op->more_files[i].fid.vnode);
1952 *bp++ = htonl(op->more_files[i].fid.unique);
1953 }
1954
1955 trace_afs_make_fs_call(call, &vp->fid);
1956 afs_make_op_call(op, call, GFP_NOFS);
1957}
1958
1959/*
1960 * deliver reply data to an FS.FetchACL
1961 */
1962static int afs_deliver_fs_fetch_acl(struct afs_call *call)
1963{
1964 struct afs_operation *op = call->op;
1965 struct afs_vnode_param *vp = &op->file[0];
1966 struct afs_acl *acl;
1967 const __be32 *bp;
1968 unsigned int size;
1969 int ret;
1970
1971 _enter("{%u}", call->unmarshall);
1972
1973 switch (call->unmarshall) {
1974 case 0:
1975 afs_extract_to_tmp(call);
1976 call->unmarshall++;
1977 fallthrough;
1978
1979 /* extract the returned data length */
1980 case 1:
1981 ret = afs_extract_data(call, true);
1982 if (ret < 0)
1983 return ret;
1984
1985 size = call->count2 = ntohl(call->tmp);
1986 size = round_up(size, 4);
1987
1988 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
1989 if (!acl)
1990 return -ENOMEM;
1991 op->acl = acl;
1992 acl->size = call->count2;
1993 afs_extract_begin(call, acl->data, size);
1994 call->unmarshall++;
1995 fallthrough;
1996
1997 /* extract the returned data */
1998 case 2:
1999 ret = afs_extract_data(call, true);
2000 if (ret < 0)
2001 return ret;
2002
2003 afs_extract_to_buf(call, (21 + 6) * 4);
2004 call->unmarshall++;
2005 fallthrough;
2006
2007 /* extract the metadata */
2008 case 3:
2009 ret = afs_extract_data(call, false);
2010 if (ret < 0)
2011 return ret;
2012
2013 bp = call->buffer;
2014 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
2015 xdr_decode_AFSVolSync(&bp, &op->volsync);
2016
2017 call->unmarshall++;
2018
2019 case 4:
2020 break;
2021 }
2022
2023 _leave(" = 0 [done]");
2024 return 0;
2025}
2026
2027/*
2028 * FS.FetchACL operation type
2029 */
2030static const struct afs_call_type afs_RXFSFetchACL = {
2031 .name = "FS.FetchACL",
2032 .op = afs_FS_FetchACL,
2033 .deliver = afs_deliver_fs_fetch_acl,
2034};
2035
2036/*
2037 * Fetch the ACL for a file.
2038 */
2039void afs_fs_fetch_acl(struct afs_operation *op)
2040{
2041 struct afs_vnode_param *vp = &op->file[0];
2042 struct afs_call *call;
2043 __be32 *bp;
2044
2045 _enter(",%x,{%llx:%llu},,",
2046 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
2047
2048 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
2049 if (!call)
2050 return afs_op_nomem(op);
2051
2052 /* marshall the parameters */
2053 bp = call->request;
2054 bp[0] = htonl(FSFETCHACL);
2055 bp[1] = htonl(vp->fid.vid);
2056 bp[2] = htonl(vp->fid.vnode);
2057 bp[3] = htonl(vp->fid.unique);
2058
2059 trace_afs_make_fs_call(call, &vp->fid);
2060 afs_make_op_call(op, call, GFP_KERNEL);
2061}
2062
2063/*
2064 * FS.StoreACL operation type
2065 */
2066static const struct afs_call_type afs_RXFSStoreACL = {
2067 .name = "FS.StoreACL",
2068 .op = afs_FS_StoreACL,
2069 .deliver = afs_deliver_fs_file_status_and_vol,
2070 .destructor = afs_flat_call_destructor,
2071};
2072
2073/*
2074 * Fetch the ACL for a file.
2075 */
2076void afs_fs_store_acl(struct afs_operation *op)
2077{
2078 struct afs_vnode_param *vp = &op->file[0];
2079 struct afs_call *call;
2080 const struct afs_acl *acl = op->acl;
2081 size_t size;
2082 __be32 *bp;
2083
2084 _enter(",%x,{%llx:%llu},,",
2085 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
2086
2087 size = round_up(acl->size, 4);
2088 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreACL,
2089 5 * 4 + size, (21 + 6) * 4);
2090 if (!call)
2091 return afs_op_nomem(op);
2092
2093 /* marshall the parameters */
2094 bp = call->request;
2095 bp[0] = htonl(FSSTOREACL);
2096 bp[1] = htonl(vp->fid.vid);
2097 bp[2] = htonl(vp->fid.vnode);
2098 bp[3] = htonl(vp->fid.unique);
2099 bp[4] = htonl(acl->size);
2100 memcpy(&bp[5], acl->data, acl->size);
2101 if (acl->size != size)
2102 memset((void *)&bp[5] + acl->size, 0, size - acl->size);
2103
2104 trace_afs_make_fs_call(call, &vp->fid);
2105 afs_make_op_call(op, call, GFP_KERNEL);
2106}