?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / fs / afs / yfsclient.c
bloba26126ac7bf1d17c3b0280c2a54e05609b5d6e0c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* YFS File Server client stubs
3 *
4 * Copyright (C) 2018 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 #include "protocol_yfs.h"
17
18 static const struct afs_fid afs_zero_fid;
19
20 static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
21 {
22 call->cbi = afs_get_cb_interest(cbi);
23 }
24
25 #define xdr_size(x) (sizeof(*x) / sizeof(__be32))
26
27 static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
28 {
29 const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
30
31 fid->vid = xdr_to_u64(x->volume);
32 fid->vnode = xdr_to_u64(x->vnode.lo);
33 fid->vnode_hi = ntohl(x->vnode.hi);
34 fid->unique = ntohl(x->vnode.unique);
35 *_bp += xdr_size(x);
36 }
37
38 static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
39 {
40 *bp++ = htonl(n);
41 return bp;
42 }
43
44 static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
45 {
46 struct yfs_xdr_u64 *x = (void *)bp;
47
48 *x = u64_to_xdr(n);
49 return bp + xdr_size(x);
50 }
51
52 static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
53 {
54 struct yfs_xdr_YFSFid *x = (void *)bp;
55
56 x->volume = u64_to_xdr(fid->vid);
57 x->vnode.lo = u64_to_xdr(fid->vnode);
58 x->vnode.hi = htonl(fid->vnode_hi);
59 x->vnode.unique = htonl(fid->unique);
60 return bp + xdr_size(x);
61 }
62
63 static size_t xdr_strlen(unsigned int len)
64 {
65 return sizeof(__be32) + round_up(len, sizeof(__be32));
66 }
67
68 static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
69 {
70 bp = xdr_encode_u32(bp, len);
71 bp = memcpy(bp, p, len);
72 if (len & 3) {
73 unsigned int pad = 4 - (len & 3);
74
75 memset((u8 *)bp + len, 0, pad);
76 len += pad;
77 }
78
79 return bp + len / sizeof(__be32);
80 }
81
82 static s64 linux_to_yfs_time(const struct timespec64 *t)
83 {
84 /* Convert to 100ns intervals. */
85 return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
86 }
87
88 static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode)
89 {
90 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
91
92 x->mask = htonl(AFS_SET_MODE);
93 x->mode = htonl(mode & S_IALLUGO);
94 x->mtime_client = u64_to_xdr(0);
95 x->owner = u64_to_xdr(0);
96 x->group = u64_to_xdr(0);
97 return bp + xdr_size(x);
98 }
99
100 static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t)
101 {
102 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
103 s64 mtime = linux_to_yfs_time(t);
104
105 x->mask = htonl(AFS_SET_MTIME);
106 x->mode = htonl(0);
107 x->mtime_client = u64_to_xdr(mtime);
108 x->owner = u64_to_xdr(0);
109 x->group = u64_to_xdr(0);
110 return bp + xdr_size(x);
111 }
112
113 /*
114 * Convert a signed 100ns-resolution 64-bit time into a timespec.
115 */
116 static struct timespec64 yfs_time_to_linux(s64 t)
117 {
118 struct timespec64 ts;
119 u64 abs_t;
120
121 /*
122 * Unfortunately can not use normal 64 bit division on 32 bit arch, but
123 * the alternative, do_div, does not work with negative numbers so have
124 * to special case them
125 */
126 if (t < 0) {
127 abs_t = -t;
128 ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
129 ts.tv_nsec = -ts.tv_nsec;
130 ts.tv_sec = -abs_t;
131 } else {
132 abs_t = t;
133 ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
134 ts.tv_sec = abs_t;
135 }
136
137 return ts;
138 }
139
140 static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
141 {
142 s64 t = xdr_to_u64(xdr);
143
144 return yfs_time_to_linux(t);
145 }
146
147 static void yfs_check_req(struct afs_call *call, __be32 *bp)
148 {
149 size_t len = (void *)bp - call->request;
150
151 if (len > call->request_size)
152 pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
153 call->type->name, len, call->request_size);
154 else if (len < call->request_size)
155 pr_warn("kAFS: %s: Request buffer underflow (%zu<%u)\n",
156 call->type->name, len, call->request_size);
157 }
158
159 /*
160 * Dump a bad file status record.
161 */
162 static void xdr_dump_bad(const __be32 *bp)
163 {
164 __be32 x[4];
165 int i;
166
167 pr_notice("YFS XDR: Bad status record\n");
168 for (i = 0; i < 5 * 4 * 4; i += 16) {
169 memcpy(x, bp, 16);
170 bp += 4;
171 pr_notice("%03x: %08x %08x %08x %08x\n",
172 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
173 }
174
175 memcpy(x, bp, 4);
176 pr_notice("0x50: %08x\n", ntohl(x[0]));
177 }
178
179 /*
180 * Decode a YFSFetchStatus block
181 */
182 static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
183 struct afs_call *call,
184 struct afs_status_cb *scb)
185 {
186 const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
187 struct afs_file_status *status = &scb->status;
188 u32 type;
189
190 status->abort_code = ntohl(xdr->abort_code);
191 if (status->abort_code != 0) {
192 if (status->abort_code == VNOVNODE)
193 status->nlink = 0;
194 scb->have_error = true;
195 return 0;
196 }
197
198 type = ntohl(xdr->type);
199 switch (type) {
200 case AFS_FTYPE_FILE:
201 case AFS_FTYPE_DIR:
202 case AFS_FTYPE_SYMLINK:
203 status->type = type;
204 break;
205 default:
206 goto bad;
207 }
208
209 status->nlink = ntohl(xdr->nlink);
210 status->author = xdr_to_u64(xdr->author);
211 status->owner = xdr_to_u64(xdr->owner);
212 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
213 status->anon_access = ntohl(xdr->anon_access);
214 status->mode = ntohl(xdr->mode) & S_IALLUGO;
215 status->group = xdr_to_u64(xdr->group);
216 status->lock_count = ntohl(xdr->lock_count);
217
218 status->mtime_client = xdr_to_time(xdr->mtime_client);
219 status->mtime_server = xdr_to_time(xdr->mtime_server);
220 status->size = xdr_to_u64(xdr->size);
221 status->data_version = xdr_to_u64(xdr->data_version);
222 scb->have_status = true;
223
224 *_bp += xdr_size(xdr);
225 return 0;
226
227 bad:
228 xdr_dump_bad(*_bp);
229 return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
230 }
231
232 /*
233 * Decode a YFSCallBack block
234 */
235 static void xdr_decode_YFSCallBack(const __be32 **_bp,
236 struct afs_call *call,
237 struct afs_status_cb *scb)
238 {
239 struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
240 struct afs_callback *cb = &scb->callback;
241 ktime_t cb_expiry;
242
243 cb_expiry = call->reply_time;
244 cb_expiry = ktime_add(cb_expiry, xdr_to_u64(x->expiration_time) * 100);
245 cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC);
246 scb->have_cb = true;
247 *_bp += xdr_size(x);
248 }
249
250 /*
251 * Decode a YFSVolSync block
252 */
253 static void xdr_decode_YFSVolSync(const __be32 **_bp,
254 struct afs_volsync *volsync)
255 {
256 struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
257 u64 creation;
258
259 if (volsync) {
260 creation = xdr_to_u64(x->vol_creation_date);
261 do_div(creation, 10 * 1000 * 1000);
262 volsync->creation = creation;
263 }
264
265 *_bp += xdr_size(x);
266 }
267
268 /*
269 * Encode the requested attributes into a YFSStoreStatus block
270 */
271 static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
272 {
273 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
274 s64 mtime = 0, owner = 0, group = 0;
275 u32 mask = 0, mode = 0;
276
277 mask = 0;
278 if (attr->ia_valid & ATTR_MTIME) {
279 mask |= AFS_SET_MTIME;
280 mtime = linux_to_yfs_time(&attr->ia_mtime);
281 }
282
283 if (attr->ia_valid & ATTR_UID) {
284 mask |= AFS_SET_OWNER;
285 owner = from_kuid(&init_user_ns, attr->ia_uid);
286 }
287
288 if (attr->ia_valid & ATTR_GID) {
289 mask |= AFS_SET_GROUP;
290 group = from_kgid(&init_user_ns, attr->ia_gid);
291 }
292
293 if (attr->ia_valid & ATTR_MODE) {
294 mask |= AFS_SET_MODE;
295 mode = attr->ia_mode & S_IALLUGO;
296 }
297
298 x->mask = htonl(mask);
299 x->mode = htonl(mode);
300 x->mtime_client = u64_to_xdr(mtime);
301 x->owner = u64_to_xdr(owner);
302 x->group = u64_to_xdr(group);
303 return bp + xdr_size(x);
304 }
305
306 /*
307 * Decode a YFSFetchVolumeStatus block.
308 */
309 static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
310 struct afs_volume_status *vs)
311 {
312 const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
313 u32 flags;
314
315 vs->vid = xdr_to_u64(x->vid);
316 vs->parent_id = xdr_to_u64(x->parent_id);
317 flags = ntohl(x->flags);
318 vs->online = flags & yfs_FVSOnline;
319 vs->in_service = flags & yfs_FVSInservice;
320 vs->blessed = flags & yfs_FVSBlessed;
321 vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
322 vs->type = ntohl(x->type);
323 vs->min_quota = 0;
324 vs->max_quota = xdr_to_u64(x->max_quota);
325 vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
326 vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
327 vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
328 vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
329 vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
330 *_bp += sizeof(*x) / sizeof(__be32);
331 }
332
333 /*
334 * Deliver a reply that's a status, callback and volsync.
335 */
336 static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call)
337 {
338 const __be32 *bp;
339 int ret;
340
341 ret = afs_transfer_reply(call);
342 if (ret < 0)
343 return ret;
344
345 /* unmarshall the reply once we've received all of it */
346 bp = call->buffer;
347 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
348 if (ret < 0)
349 return ret;
350 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
351 xdr_decode_YFSVolSync(&bp, call->out_volsync);
352
353 _leave(" = 0 [done]");
354 return 0;
355 }
356
357 /*
358 * Deliver reply data to operations that just return a file status and a volume
359 * sync record.
360 */
361 static int yfs_deliver_status_and_volsync(struct afs_call *call)
362 {
363 const __be32 *bp;
364 int ret;
365
366 ret = afs_transfer_reply(call);
367 if (ret < 0)
368 return ret;
369
370 bp = call->buffer;
371 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
372 if (ret < 0)
373 return ret;
374 xdr_decode_YFSVolSync(&bp, call->out_volsync);
375
376 _leave(" = 0 [done]");
377 return 0;
378 }
379
380 /*
381 * YFS.FetchStatus operation type
382 */
383 static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = {
384 .name = "YFS.FetchStatus(vnode)",
385 .op = yfs_FS_FetchStatus,
386 .deliver = yfs_deliver_fs_status_cb_and_volsync,
387 .destructor = afs_flat_call_destructor,
388 };
389
390 /*
391 * Fetch the status information for a file.
392 */
393 int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
394 struct afs_volsync *volsync)
395 {
396 struct afs_vnode *vnode = fc->vnode;
397 struct afs_call *call;
398 struct afs_net *net = afs_v2net(vnode);
399 __be32 *bp;
400
401 _enter(",%x,{%llx:%llu},,",
402 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
403
404 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode,
405 sizeof(__be32) * 2 +
406 sizeof(struct yfs_xdr_YFSFid),
407 sizeof(struct yfs_xdr_YFSFetchStatus) +
408 sizeof(struct yfs_xdr_YFSCallBack) +
409 sizeof(struct yfs_xdr_YFSVolSync));
410 if (!call) {
411 fc->ac.error = -ENOMEM;
412 return -ENOMEM;
413 }
414
415 call->key = fc->key;
416 call->out_scb = scb;
417 call->out_volsync = volsync;
418
419 /* marshall the parameters */
420 bp = call->request;
421 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
422 bp = xdr_encode_u32(bp, 0); /* RPC flags */
423 bp = xdr_encode_YFSFid(bp, &vnode->fid);
424 yfs_check_req(call, bp);
425
426 afs_use_fs_server(call, fc->cbi);
427 trace_afs_make_fs_call(call, &vnode->fid);
428 afs_set_fc_call(call, fc);
429 afs_make_call(&fc->ac, call, GFP_NOFS);
430 return afs_wait_for_call_to_complete(call, &fc->ac);
431 }
432
433 /*
434 * Deliver reply data to an YFS.FetchData64.
435 */
436 static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
437 {
438 struct afs_read *req = call->read_request;
439 const __be32 *bp;
440 unsigned int size;
441 int ret;
442
443 _enter("{%u,%zu/%llu}",
444 call->unmarshall, iov_iter_count(call->iter), req->actual_len);
445
446 switch (call->unmarshall) {
447 case 0:
448 req->actual_len = 0;
449 req->index = 0;
450 req->offset = req->pos & (PAGE_SIZE - 1);
451 afs_extract_to_tmp64(call);
452 call->unmarshall++;
453 /* Fall through */
454
455 /* extract the returned data length */
456 case 1:
457 _debug("extract data length");
458 ret = afs_extract_data(call, true);
459 if (ret < 0)
460 return ret;
461
462 req->actual_len = be64_to_cpu(call->tmp64);
463 _debug("DATA length: %llu", req->actual_len);
464 req->remain = min(req->len, req->actual_len);
465 if (req->remain == 0)
466 goto no_more_data;
467
468 call->unmarshall++;
469
470 begin_page:
471 ASSERTCMP(req->index, <, req->nr_pages);
472 if (req->remain > PAGE_SIZE - req->offset)
473 size = PAGE_SIZE - req->offset;
474 else
475 size = req->remain;
476 call->bvec[0].bv_len = size;
477 call->bvec[0].bv_offset = req->offset;
478 call->bvec[0].bv_page = req->pages[req->index];
479 iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
480 ASSERTCMP(size, <=, PAGE_SIZE);
481 /* Fall through */
482
483 /* extract the returned data */
484 case 2:
485 _debug("extract data %zu/%llu",
486 iov_iter_count(call->iter), req->remain);
487
488 ret = afs_extract_data(call, true);
489 if (ret < 0)
490 return ret;
491 req->remain -= call->bvec[0].bv_len;
492 req->offset += call->bvec[0].bv_len;
493 ASSERTCMP(req->offset, <=, PAGE_SIZE);
494 if (req->offset == PAGE_SIZE) {
495 req->offset = 0;
496 if (req->page_done)
497 req->page_done(req);
498 req->index++;
499 if (req->remain > 0)
500 goto begin_page;
501 }
502
503 ASSERTCMP(req->remain, ==, 0);
504 if (req->actual_len <= req->len)
505 goto no_more_data;
506
507 /* Discard any excess data the server gave us */
508 afs_extract_discard(call, req->actual_len - req->len);
509 call->unmarshall = 3;
510 /* Fall through */
511
512 case 3:
513 _debug("extract discard %zu/%llu",
514 iov_iter_count(call->iter), req->actual_len - req->len);
515
516 ret = afs_extract_data(call, true);
517 if (ret < 0)
518 return ret;
519
520 no_more_data:
521 call->unmarshall = 4;
522 afs_extract_to_buf(call,
523 sizeof(struct yfs_xdr_YFSFetchStatus) +
524 sizeof(struct yfs_xdr_YFSCallBack) +
525 sizeof(struct yfs_xdr_YFSVolSync));
526 /* Fall through */
527
528 /* extract the metadata */
529 case 4:
530 ret = afs_extract_data(call, false);
531 if (ret < 0)
532 return ret;
533
534 bp = call->buffer;
535 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
536 if (ret < 0)
537 return ret;
538 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
539 xdr_decode_YFSVolSync(&bp, call->out_volsync);
540
541 req->data_version = call->out_scb->status.data_version;
542 req->file_size = call->out_scb->status.size;
543
544 call->unmarshall++;
545 /* Fall through */
546
547 case 5:
548 break;
549 }
550
551 for (; req->index < req->nr_pages; req->index++) {
552 if (req->offset < PAGE_SIZE)
553 zero_user_segment(req->pages[req->index],
554 req->offset, PAGE_SIZE);
555 if (req->page_done)
556 req->page_done(req);
557 req->offset = 0;
558 }
559
560 _leave(" = 0 [done]");
561 return 0;
562 }
563
564 static void yfs_fetch_data_destructor(struct afs_call *call)
565 {
566 afs_put_read(call->read_request);
567 afs_flat_call_destructor(call);
568 }
569
570 /*
571 * YFS.FetchData64 operation type
572 */
573 static const struct afs_call_type yfs_RXYFSFetchData64 = {
574 .name = "YFS.FetchData64",
575 .op = yfs_FS_FetchData64,
576 .deliver = yfs_deliver_fs_fetch_data64,
577 .destructor = yfs_fetch_data_destructor,
578 };
579
580 /*
581 * Fetch data from a file.
582 */
583 int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
584 struct afs_read *req)
585 {
586 struct afs_vnode *vnode = fc->vnode;
587 struct afs_call *call;
588 struct afs_net *net = afs_v2net(vnode);
589 __be32 *bp;
590
591 _enter(",%x,{%llx:%llu},%llx,%llx",
592 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode,
593 req->pos, req->len);
594
595 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64,
596 sizeof(__be32) * 2 +
597 sizeof(struct yfs_xdr_YFSFid) +
598 sizeof(struct yfs_xdr_u64) * 2,
599 sizeof(struct yfs_xdr_YFSFetchStatus) +
600 sizeof(struct yfs_xdr_YFSCallBack) +
601 sizeof(struct yfs_xdr_YFSVolSync));
602 if (!call)
603 return -ENOMEM;
604
605 call->key = fc->key;
606 call->out_scb = scb;
607 call->out_volsync = NULL;
608 call->read_request = afs_get_read(req);
609
610 /* marshall the parameters */
611 bp = call->request;
612 bp = xdr_encode_u32(bp, YFSFETCHDATA64);
613 bp = xdr_encode_u32(bp, 0); /* RPC flags */
614 bp = xdr_encode_YFSFid(bp, &vnode->fid);
615 bp = xdr_encode_u64(bp, req->pos);
616 bp = xdr_encode_u64(bp, req->len);
617 yfs_check_req(call, bp);
618
619 afs_use_fs_server(call, fc->cbi);
620 trace_afs_make_fs_call(call, &vnode->fid);
621 afs_set_fc_call(call, fc);
622 afs_make_call(&fc->ac, call, GFP_NOFS);
623 return afs_wait_for_call_to_complete(call, &fc->ac);
624 }
625
626 /*
627 * Deliver reply data for YFS.CreateFile or YFS.MakeDir.
628 */
629 static int yfs_deliver_fs_create_vnode(struct afs_call *call)
630 {
631 const __be32 *bp;
632 int ret;
633
634 _enter("{%u}", call->unmarshall);
635
636 ret = afs_transfer_reply(call);
637 if (ret < 0)
638 return ret;
639
640 /* unmarshall the reply once we've received all of it */
641 bp = call->buffer;
642 xdr_decode_YFSFid(&bp, call->out_fid);
643 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
644 if (ret < 0)
645 return ret;
646 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
647 if (ret < 0)
648 return ret;
649 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
650 xdr_decode_YFSVolSync(&bp, call->out_volsync);
651
652 _leave(" = 0 [done]");
653 return 0;
654 }
655
656 /*
657 * FS.CreateFile and FS.MakeDir operation type
658 */
659 static const struct afs_call_type afs_RXFSCreateFile = {
660 .name = "YFS.CreateFile",
661 .op = yfs_FS_CreateFile,
662 .deliver = yfs_deliver_fs_create_vnode,
663 .destructor = afs_flat_call_destructor,
664 };
665
666 /*
667 * Create a file.
668 */
669 int yfs_fs_create_file(struct afs_fs_cursor *fc,
670 const char *name,
671 umode_t mode,
672 struct afs_status_cb *dvnode_scb,
673 struct afs_fid *newfid,
674 struct afs_status_cb *new_scb)
675 {
676 struct afs_vnode *dvnode = fc->vnode;
677 struct afs_call *call;
678 struct afs_net *net = afs_v2net(dvnode);
679 size_t namesz, reqsz, rplsz;
680 __be32 *bp;
681
682 _enter("");
683
684 namesz = strlen(name);
685 reqsz = (sizeof(__be32) +
686 sizeof(__be32) +
687 sizeof(struct yfs_xdr_YFSFid) +
688 xdr_strlen(namesz) +
689 sizeof(struct yfs_xdr_YFSStoreStatus) +
690 sizeof(__be32));
691 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
692 sizeof(struct yfs_xdr_YFSFetchStatus) +
693 sizeof(struct yfs_xdr_YFSFetchStatus) +
694 sizeof(struct yfs_xdr_YFSCallBack) +
695 sizeof(struct yfs_xdr_YFSVolSync));
696
697 call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz);
698 if (!call)
699 return -ENOMEM;
700
701 call->key = fc->key;
702 call->out_dir_scb = dvnode_scb;
703 call->out_fid = newfid;
704 call->out_scb = new_scb;
705
706 /* marshall the parameters */
707 bp = call->request;
708 bp = xdr_encode_u32(bp, YFSCREATEFILE);
709 bp = xdr_encode_u32(bp, 0); /* RPC flags */
710 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
711 bp = xdr_encode_string(bp, name, namesz);
712 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
713 bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
714 yfs_check_req(call, bp);
715
716 afs_use_fs_server(call, fc->cbi);
717 trace_afs_make_fs_call1(call, &dvnode->fid, name);
718 afs_set_fc_call(call, fc);
719 afs_make_call(&fc->ac, call, GFP_NOFS);
720 return afs_wait_for_call_to_complete(call, &fc->ac);
721 }
722
723 static const struct afs_call_type yfs_RXFSMakeDir = {
724 .name = "YFS.MakeDir",
725 .op = yfs_FS_MakeDir,
726 .deliver = yfs_deliver_fs_create_vnode,
727 .destructor = afs_flat_call_destructor,
728 };
729
730 /*
731 * Make a directory.
732 */
733 int yfs_fs_make_dir(struct afs_fs_cursor *fc,
734 const char *name,
735 umode_t mode,
736 struct afs_status_cb *dvnode_scb,
737 struct afs_fid *newfid,
738 struct afs_status_cb *new_scb)
739 {
740 struct afs_vnode *dvnode = fc->vnode;
741 struct afs_call *call;
742 struct afs_net *net = afs_v2net(dvnode);
743 size_t namesz, reqsz, rplsz;
744 __be32 *bp;
745
746 _enter("");
747
748 namesz = strlen(name);
749 reqsz = (sizeof(__be32) +
750 sizeof(struct yfs_xdr_RPCFlags) +
751 sizeof(struct yfs_xdr_YFSFid) +
752 xdr_strlen(namesz) +
753 sizeof(struct yfs_xdr_YFSStoreStatus));
754 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
755 sizeof(struct yfs_xdr_YFSFetchStatus) +
756 sizeof(struct yfs_xdr_YFSFetchStatus) +
757 sizeof(struct yfs_xdr_YFSCallBack) +
758 sizeof(struct yfs_xdr_YFSVolSync));
759
760 call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz);
761 if (!call)
762 return -ENOMEM;
763
764 call->key = fc->key;
765 call->out_dir_scb = dvnode_scb;
766 call->out_fid = newfid;
767 call->out_scb = new_scb;
768
769 /* marshall the parameters */
770 bp = call->request;
771 bp = xdr_encode_u32(bp, YFSMAKEDIR);
772 bp = xdr_encode_u32(bp, 0); /* RPC flags */
773 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
774 bp = xdr_encode_string(bp, name, namesz);
775 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
776 yfs_check_req(call, bp);
777
778 afs_use_fs_server(call, fc->cbi);
779 trace_afs_make_fs_call1(call, &dvnode->fid, name);
780 afs_set_fc_call(call, fc);
781 afs_make_call(&fc->ac, call, GFP_NOFS);
782 return afs_wait_for_call_to_complete(call, &fc->ac);
783 }
784
785 /*
786 * Deliver reply data to a YFS.RemoveFile2 operation.
787 */
788 static int yfs_deliver_fs_remove_file2(struct afs_call *call)
789 {
790 struct afs_fid fid;
791 const __be32 *bp;
792 int ret;
793
794 _enter("{%u}", call->unmarshall);
795
796 ret = afs_transfer_reply(call);
797 if (ret < 0)
798 return ret;
799
800 bp = call->buffer;
801 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
802 if (ret < 0)
803 return ret;
804
805 xdr_decode_YFSFid(&bp, &fid);
806 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
807 if (ret < 0)
808 return ret;
809 /* Was deleted if vnode->status.abort_code == VNOVNODE. */
810
811 xdr_decode_YFSVolSync(&bp, call->out_volsync);
812 return 0;
813 }
814
815 /*
816 * YFS.RemoveFile2 operation type.
817 */
818 static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
819 .name = "YFS.RemoveFile2",
820 .op = yfs_FS_RemoveFile2,
821 .deliver = yfs_deliver_fs_remove_file2,
822 .destructor = afs_flat_call_destructor,
823 };
824
825 /*
826 * Remove a file and retrieve new file status.
827 */
828 int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
829 const char *name, struct afs_status_cb *dvnode_scb,
830 struct afs_status_cb *vnode_scb)
831 {
832 struct afs_vnode *dvnode = fc->vnode;
833 struct afs_call *call;
834 struct afs_net *net = afs_v2net(dvnode);
835 size_t namesz;
836 __be32 *bp;
837
838 _enter("");
839
840 namesz = strlen(name);
841
842 call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2,
843 sizeof(__be32) +
844 sizeof(struct yfs_xdr_RPCFlags) +
845 sizeof(struct yfs_xdr_YFSFid) +
846 xdr_strlen(namesz),
847 sizeof(struct yfs_xdr_YFSFetchStatus) +
848 sizeof(struct yfs_xdr_YFSFid) +
849 sizeof(struct yfs_xdr_YFSFetchStatus) +
850 sizeof(struct yfs_xdr_YFSVolSync));
851 if (!call)
852 return -ENOMEM;
853
854 call->key = fc->key;
855 call->out_dir_scb = dvnode_scb;
856 call->out_scb = vnode_scb;
857
858 /* marshall the parameters */
859 bp = call->request;
860 bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
861 bp = xdr_encode_u32(bp, 0); /* RPC flags */
862 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
863 bp = xdr_encode_string(bp, name, namesz);
864 yfs_check_req(call, bp);
865
866 afs_use_fs_server(call, fc->cbi);
867 trace_afs_make_fs_call1(call, &dvnode->fid, name);
868 afs_set_fc_call(call, fc);
869 afs_make_call(&fc->ac, call, GFP_NOFS);
870 return afs_wait_for_call_to_complete(call, &fc->ac);
871 }
872
873 /*
874 * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
875 */
876 static int yfs_deliver_fs_remove(struct afs_call *call)
877 {
878 const __be32 *bp;
879 int ret;
880
881 _enter("{%u}", call->unmarshall);
882
883 ret = afs_transfer_reply(call);
884 if (ret < 0)
885 return ret;
886
887 bp = call->buffer;
888 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
889 if (ret < 0)
890 return ret;
891
892 xdr_decode_YFSVolSync(&bp, call->out_volsync);
893 return 0;
894 }
895
896 /*
897 * FS.RemoveDir and FS.RemoveFile operation types.
898 */
899 static const struct afs_call_type yfs_RXYFSRemoveFile = {
900 .name = "YFS.RemoveFile",
901 .op = yfs_FS_RemoveFile,
902 .deliver = yfs_deliver_fs_remove,
903 .destructor = afs_flat_call_destructor,
904 };
905
906 static const struct afs_call_type yfs_RXYFSRemoveDir = {
907 .name = "YFS.RemoveDir",
908 .op = yfs_FS_RemoveDir,
909 .deliver = yfs_deliver_fs_remove,
910 .destructor = afs_flat_call_destructor,
911 };
912
913 /*
914 * remove a file or directory
915 */
916 int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
917 const char *name, bool isdir,
918 struct afs_status_cb *dvnode_scb)
919 {
920 struct afs_vnode *dvnode = fc->vnode;
921 struct afs_call *call;
922 struct afs_net *net = afs_v2net(dvnode);
923 size_t namesz;
924 __be32 *bp;
925
926 _enter("");
927
928 namesz = strlen(name);
929 call = afs_alloc_flat_call(
930 net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile,
931 sizeof(__be32) +
932 sizeof(struct yfs_xdr_RPCFlags) +
933 sizeof(struct yfs_xdr_YFSFid) +
934 xdr_strlen(namesz),
935 sizeof(struct yfs_xdr_YFSFetchStatus) +
936 sizeof(struct yfs_xdr_YFSVolSync));
937 if (!call)
938 return -ENOMEM;
939
940 call->key = fc->key;
941 call->out_dir_scb = dvnode_scb;
942
943 /* marshall the parameters */
944 bp = call->request;
945 bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE);
946 bp = xdr_encode_u32(bp, 0); /* RPC flags */
947 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
948 bp = xdr_encode_string(bp, name, namesz);
949 yfs_check_req(call, bp);
950
951 afs_use_fs_server(call, fc->cbi);
952 trace_afs_make_fs_call1(call, &dvnode->fid, name);
953 afs_set_fc_call(call, fc);
954 afs_make_call(&fc->ac, call, GFP_NOFS);
955 return afs_wait_for_call_to_complete(call, &fc->ac);
956 }
957
958 /*
959 * Deliver reply data to a YFS.Link operation.
960 */
961 static int yfs_deliver_fs_link(struct afs_call *call)
962 {
963 const __be32 *bp;
964 int ret;
965
966 _enter("{%u}", call->unmarshall);
967
968 ret = afs_transfer_reply(call);
969 if (ret < 0)
970 return ret;
971
972 bp = call->buffer;
973 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
974 if (ret < 0)
975 return ret;
976 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
977 if (ret < 0)
978 return ret;
979 xdr_decode_YFSVolSync(&bp, call->out_volsync);
980 _leave(" = 0 [done]");
981 return 0;
982 }
983
984 /*
985 * YFS.Link operation type.
986 */
987 static const struct afs_call_type yfs_RXYFSLink = {
988 .name = "YFS.Link",
989 .op = yfs_FS_Link,
990 .deliver = yfs_deliver_fs_link,
991 .destructor = afs_flat_call_destructor,
992 };
993
994 /*
995 * Make a hard link.
996 */
997 int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
998 const char *name,
999 struct afs_status_cb *dvnode_scb,
1000 struct afs_status_cb *vnode_scb)
1001 {
1002 struct afs_vnode *dvnode = fc->vnode;
1003 struct afs_call *call;
1004 struct afs_net *net = afs_v2net(vnode);
1005 size_t namesz;
1006 __be32 *bp;
1007
1008 _enter("");
1009
1010 namesz = strlen(name);
1011 call = afs_alloc_flat_call(net, &yfs_RXYFSLink,
1012 sizeof(__be32) +
1013 sizeof(struct yfs_xdr_RPCFlags) +
1014 sizeof(struct yfs_xdr_YFSFid) +
1015 xdr_strlen(namesz) +
1016 sizeof(struct yfs_xdr_YFSFid),
1017 sizeof(struct yfs_xdr_YFSFetchStatus) +
1018 sizeof(struct yfs_xdr_YFSFetchStatus) +
1019 sizeof(struct yfs_xdr_YFSVolSync));
1020 if (!call)
1021 return -ENOMEM;
1022
1023 call->key = fc->key;
1024 call->out_dir_scb = dvnode_scb;
1025 call->out_scb = vnode_scb;
1026
1027 /* marshall the parameters */
1028 bp = call->request;
1029 bp = xdr_encode_u32(bp, YFSLINK);
1030 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1031 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1032 bp = xdr_encode_string(bp, name, namesz);
1033 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1034 yfs_check_req(call, bp);
1035
1036 afs_use_fs_server(call, fc->cbi);
1037 trace_afs_make_fs_call1(call, &vnode->fid, name);
1038 afs_set_fc_call(call, fc);
1039 afs_make_call(&fc->ac, call, GFP_NOFS);
1040 return afs_wait_for_call_to_complete(call, &fc->ac);
1041 }
1042
1043 /*
1044 * Deliver reply data to a YFS.Symlink operation.
1045 */
1046 static int yfs_deliver_fs_symlink(struct afs_call *call)
1047 {
1048 const __be32 *bp;
1049 int ret;
1050
1051 _enter("{%u}", call->unmarshall);
1052
1053 ret = afs_transfer_reply(call);
1054 if (ret < 0)
1055 return ret;
1056
1057 /* unmarshall the reply once we've received all of it */
1058 bp = call->buffer;
1059 xdr_decode_YFSFid(&bp, call->out_fid);
1060 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1061 if (ret < 0)
1062 return ret;
1063 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1064 if (ret < 0)
1065 return ret;
1066 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1067
1068 _leave(" = 0 [done]");
1069 return 0;
1070 }
1071
1072 /*
1073 * YFS.Symlink operation type
1074 */
1075 static const struct afs_call_type yfs_RXYFSSymlink = {
1076 .name = "YFS.Symlink",
1077 .op = yfs_FS_Symlink,
1078 .deliver = yfs_deliver_fs_symlink,
1079 .destructor = afs_flat_call_destructor,
1080 };
1081
1082 /*
1083 * Create a symbolic link.
1084 */
1085 int yfs_fs_symlink(struct afs_fs_cursor *fc,
1086 const char *name,
1087 const char *contents,
1088 struct afs_status_cb *dvnode_scb,
1089 struct afs_fid *newfid,
1090 struct afs_status_cb *vnode_scb)
1091 {
1092 struct afs_vnode *dvnode = fc->vnode;
1093 struct afs_call *call;
1094 struct afs_net *net = afs_v2net(dvnode);
1095 size_t namesz, contents_sz;
1096 __be32 *bp;
1097
1098 _enter("");
1099
1100 namesz = strlen(name);
1101 contents_sz = strlen(contents);
1102 call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink,
1103 sizeof(__be32) +
1104 sizeof(struct yfs_xdr_RPCFlags) +
1105 sizeof(struct yfs_xdr_YFSFid) +
1106 xdr_strlen(namesz) +
1107 xdr_strlen(contents_sz) +
1108 sizeof(struct yfs_xdr_YFSStoreStatus),
1109 sizeof(struct yfs_xdr_YFSFid) +
1110 sizeof(struct yfs_xdr_YFSFetchStatus) +
1111 sizeof(struct yfs_xdr_YFSFetchStatus) +
1112 sizeof(struct yfs_xdr_YFSVolSync));
1113 if (!call)
1114 return -ENOMEM;
1115
1116 call->key = fc->key;
1117 call->out_dir_scb = dvnode_scb;
1118 call->out_fid = newfid;
1119 call->out_scb = vnode_scb;
1120
1121 /* marshall the parameters */
1122 bp = call->request;
1123 bp = xdr_encode_u32(bp, YFSSYMLINK);
1124 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1125 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1126 bp = xdr_encode_string(bp, name, namesz);
1127 bp = xdr_encode_string(bp, contents, contents_sz);
1128 bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
1129 yfs_check_req(call, bp);
1130
1131 afs_use_fs_server(call, fc->cbi);
1132 trace_afs_make_fs_call1(call, &dvnode->fid, name);
1133 afs_set_fc_call(call, fc);
1134 afs_make_call(&fc->ac, call, GFP_NOFS);
1135 return afs_wait_for_call_to_complete(call, &fc->ac);
1136 }
1137
1138 /*
1139 * Deliver reply data to a YFS.Rename operation.
1140 */
1141 static int yfs_deliver_fs_rename(struct afs_call *call)
1142 {
1143 const __be32 *bp;
1144 int ret;
1145
1146 _enter("{%u}", call->unmarshall);
1147
1148 ret = afs_transfer_reply(call);
1149 if (ret < 0)
1150 return ret;
1151
1152 bp = call->buffer;
1153 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1154 if (ret < 0)
1155 return ret;
1156 if (call->out_dir_scb != call->out_scb) {
1157 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1158 if (ret < 0)
1159 return ret;
1160 }
1161
1162 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1163 _leave(" = 0 [done]");
1164 return 0;
1165 }
1166
1167 /*
1168 * YFS.Rename operation type
1169 */
1170 static const struct afs_call_type yfs_RXYFSRename = {
1171 .name = "FS.Rename",
1172 .op = yfs_FS_Rename,
1173 .deliver = yfs_deliver_fs_rename,
1174 .destructor = afs_flat_call_destructor,
1175 };
1176
1177 /*
1178 * Rename a file or directory.
1179 */
1180 int yfs_fs_rename(struct afs_fs_cursor *fc,
1181 const char *orig_name,
1182 struct afs_vnode *new_dvnode,
1183 const char *new_name,
1184 struct afs_status_cb *orig_dvnode_scb,
1185 struct afs_status_cb *new_dvnode_scb)
1186 {
1187 struct afs_vnode *orig_dvnode = fc->vnode;
1188 struct afs_call *call;
1189 struct afs_net *net = afs_v2net(orig_dvnode);
1190 size_t o_namesz, n_namesz;
1191 __be32 *bp;
1192
1193 _enter("");
1194
1195 o_namesz = strlen(orig_name);
1196 n_namesz = strlen(new_name);
1197 call = afs_alloc_flat_call(net, &yfs_RXYFSRename,
1198 sizeof(__be32) +
1199 sizeof(struct yfs_xdr_RPCFlags) +
1200 sizeof(struct yfs_xdr_YFSFid) +
1201 xdr_strlen(o_namesz) +
1202 sizeof(struct yfs_xdr_YFSFid) +
1203 xdr_strlen(n_namesz),
1204 sizeof(struct yfs_xdr_YFSFetchStatus) +
1205 sizeof(struct yfs_xdr_YFSFetchStatus) +
1206 sizeof(struct yfs_xdr_YFSVolSync));
1207 if (!call)
1208 return -ENOMEM;
1209
1210 call->key = fc->key;
1211 call->out_dir_scb = orig_dvnode_scb;
1212 call->out_scb = new_dvnode_scb;
1213
1214 /* marshall the parameters */
1215 bp = call->request;
1216 bp = xdr_encode_u32(bp, YFSRENAME);
1217 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1218 bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid);
1219 bp = xdr_encode_string(bp, orig_name, o_namesz);
1220 bp = xdr_encode_YFSFid(bp, &new_dvnode->fid);
1221 bp = xdr_encode_string(bp, new_name, n_namesz);
1222 yfs_check_req(call, bp);
1223
1224 afs_use_fs_server(call, fc->cbi);
1225 trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name);
1226 afs_set_fc_call(call, fc);
1227 afs_make_call(&fc->ac, call, GFP_NOFS);
1228 return afs_wait_for_call_to_complete(call, &fc->ac);
1229 }
1230
1231 /*
1232 * YFS.StoreData64 operation type.
1233 */
1234 static const struct afs_call_type yfs_RXYFSStoreData64 = {
1235 .name = "YFS.StoreData64",
1236 .op = yfs_FS_StoreData64,
1237 .deliver = yfs_deliver_status_and_volsync,
1238 .destructor = afs_flat_call_destructor,
1239 };
1240
1241 /*
1242 * Store a set of pages to a large file.
1243 */
1244 int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
1245 pgoff_t first, pgoff_t last,
1246 unsigned offset, unsigned to,
1247 struct afs_status_cb *scb)
1248 {
1249 struct afs_vnode *vnode = fc->vnode;
1250 struct afs_call *call;
1251 struct afs_net *net = afs_v2net(vnode);
1252 loff_t size, pos, i_size;
1253 __be32 *bp;
1254
1255 _enter(",%x,{%llx:%llu},,",
1256 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1257
1258 size = (loff_t)to - (loff_t)offset;
1259 if (first != last)
1260 size += (loff_t)(last - first) << PAGE_SHIFT;
1261 pos = (loff_t)first << PAGE_SHIFT;
1262 pos += offset;
1263
1264 i_size = i_size_read(&vnode->vfs_inode);
1265 if (pos + size > i_size)
1266 i_size = size + pos;
1267
1268 _debug("size %llx, at %llx, i_size %llx",
1269 (unsigned long long)size, (unsigned long long)pos,
1270 (unsigned long long)i_size);
1271
1272 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64,
1273 sizeof(__be32) +
1274 sizeof(__be32) +
1275 sizeof(struct yfs_xdr_YFSFid) +
1276 sizeof(struct yfs_xdr_YFSStoreStatus) +
1277 sizeof(struct yfs_xdr_u64) * 3,
1278 sizeof(struct yfs_xdr_YFSFetchStatus) +
1279 sizeof(struct yfs_xdr_YFSVolSync));
1280 if (!call)
1281 return -ENOMEM;
1282
1283 call->key = fc->key;
1284 call->mapping = mapping;
1285 call->first = first;
1286 call->last = last;
1287 call->first_offset = offset;
1288 call->last_to = to;
1289 call->send_pages = true;
1290 call->out_scb = scb;
1291
1292 /* marshall the parameters */
1293 bp = call->request;
1294 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1295 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1296 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1297 bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime);
1298 bp = xdr_encode_u64(bp, pos);
1299 bp = xdr_encode_u64(bp, size);
1300 bp = xdr_encode_u64(bp, i_size);
1301 yfs_check_req(call, bp);
1302
1303 afs_use_fs_server(call, fc->cbi);
1304 trace_afs_make_fs_call(call, &vnode->fid);
1305 afs_set_fc_call(call, fc);
1306 afs_make_call(&fc->ac, call, GFP_NOFS);
1307 return afs_wait_for_call_to_complete(call, &fc->ac);
1308 }
1309
1310 /*
1311 * YFS.StoreStatus operation type
1312 */
1313 static const struct afs_call_type yfs_RXYFSStoreStatus = {
1314 .name = "YFS.StoreStatus",
1315 .op = yfs_FS_StoreStatus,
1316 .deliver = yfs_deliver_status_and_volsync,
1317 .destructor = afs_flat_call_destructor,
1318 };
1319
1320 static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
1321 .name = "YFS.StoreData64",
1322 .op = yfs_FS_StoreData64,
1323 .deliver = yfs_deliver_status_and_volsync,
1324 .destructor = afs_flat_call_destructor,
1325 };
1326
1327 /*
1328 * Set the attributes on a file, using YFS.StoreData64 rather than
1329 * YFS.StoreStatus so as to alter the file size also.
1330 */
1331 static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
1332 struct afs_status_cb *scb)
1333 {
1334 struct afs_vnode *vnode = fc->vnode;
1335 struct afs_call *call;
1336 struct afs_net *net = afs_v2net(vnode);
1337 __be32 *bp;
1338
1339 _enter(",%x,{%llx:%llu},,",
1340 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1341
1342 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status,
1343 sizeof(__be32) * 2 +
1344 sizeof(struct yfs_xdr_YFSFid) +
1345 sizeof(struct yfs_xdr_YFSStoreStatus) +
1346 sizeof(struct yfs_xdr_u64) * 3,
1347 sizeof(struct yfs_xdr_YFSFetchStatus) +
1348 sizeof(struct yfs_xdr_YFSVolSync));
1349 if (!call)
1350 return -ENOMEM;
1351
1352 call->key = fc->key;
1353 call->out_scb = scb;
1354
1355 /* marshall the parameters */
1356 bp = call->request;
1357 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1358 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1359 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1360 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1361 bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
1362 bp = xdr_encode_u64(bp, 0); /* size of write */
1363 bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
1364 yfs_check_req(call, bp);
1365
1366 afs_use_fs_server(call, fc->cbi);
1367 trace_afs_make_fs_call(call, &vnode->fid);
1368 afs_set_fc_call(call, fc);
1369 afs_make_call(&fc->ac, call, GFP_NOFS);
1370 return afs_wait_for_call_to_complete(call, &fc->ac);
1371 }
1372
1373 /*
1374 * Set the attributes on a file, using YFS.StoreData64 if there's a change in
1375 * file size, and YFS.StoreStatus otherwise.
1376 */
1377 int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
1378 struct afs_status_cb *scb)
1379 {
1380 struct afs_vnode *vnode = fc->vnode;
1381 struct afs_call *call;
1382 struct afs_net *net = afs_v2net(vnode);
1383 __be32 *bp;
1384
1385 if (attr->ia_valid & ATTR_SIZE)
1386 return yfs_fs_setattr_size(fc, attr, scb);
1387
1388 _enter(",%x,{%llx:%llu},,",
1389 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1390
1391 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus,
1392 sizeof(__be32) * 2 +
1393 sizeof(struct yfs_xdr_YFSFid) +
1394 sizeof(struct yfs_xdr_YFSStoreStatus),
1395 sizeof(struct yfs_xdr_YFSFetchStatus) +
1396 sizeof(struct yfs_xdr_YFSVolSync));
1397 if (!call)
1398 return -ENOMEM;
1399
1400 call->key = fc->key;
1401 call->out_scb = scb;
1402
1403 /* marshall the parameters */
1404 bp = call->request;
1405 bp = xdr_encode_u32(bp, YFSSTORESTATUS);
1406 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1407 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1408 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1409 yfs_check_req(call, bp);
1410
1411 afs_use_fs_server(call, fc->cbi);
1412 trace_afs_make_fs_call(call, &vnode->fid);
1413 afs_set_fc_call(call, fc);
1414 afs_make_call(&fc->ac, call, GFP_NOFS);
1415 return afs_wait_for_call_to_complete(call, &fc->ac);
1416 }
1417
1418 /*
1419 * Deliver reply data to a YFS.GetVolumeStatus operation.
1420 */
1421 static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
1422 {
1423 const __be32 *bp;
1424 char *p;
1425 u32 size;
1426 int ret;
1427
1428 _enter("{%u}", call->unmarshall);
1429
1430 switch (call->unmarshall) {
1431 case 0:
1432 call->unmarshall++;
1433 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
1434 /* Fall through */
1435
1436 /* extract the returned status record */
1437 case 1:
1438 _debug("extract status");
1439 ret = afs_extract_data(call, true);
1440 if (ret < 0)
1441 return ret;
1442
1443 bp = call->buffer;
1444 xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus);
1445 call->unmarshall++;
1446 afs_extract_to_tmp(call);
1447 /* Fall through */
1448
1449 /* extract the volume name length */
1450 case 2:
1451 ret = afs_extract_data(call, true);
1452 if (ret < 0)
1453 return ret;
1454
1455 call->count = ntohl(call->tmp);
1456 _debug("volname length: %u", call->count);
1457 if (call->count >= AFSNAMEMAX)
1458 return afs_protocol_error(call, -EBADMSG,
1459 afs_eproto_volname_len);
1460 size = (call->count + 3) & ~3; /* It's padded */
1461 afs_extract_to_buf(call, size);
1462 call->unmarshall++;
1463 /* Fall through */
1464
1465 /* extract the volume name */
1466 case 3:
1467 _debug("extract volname");
1468 ret = afs_extract_data(call, true);
1469 if (ret < 0)
1470 return ret;
1471
1472 p = call->buffer;
1473 p[call->count] = 0;
1474 _debug("volname '%s'", p);
1475 afs_extract_to_tmp(call);
1476 call->unmarshall++;
1477 /* Fall through */
1478
1479 /* extract the offline message length */
1480 case 4:
1481 ret = afs_extract_data(call, true);
1482 if (ret < 0)
1483 return ret;
1484
1485 call->count = ntohl(call->tmp);
1486 _debug("offline msg length: %u", call->count);
1487 if (call->count >= AFSNAMEMAX)
1488 return afs_protocol_error(call, -EBADMSG,
1489 afs_eproto_offline_msg_len);
1490 size = (call->count + 3) & ~3; /* It's padded */
1491 afs_extract_to_buf(call, size);
1492 call->unmarshall++;
1493 /* Fall through */
1494
1495 /* extract the offline message */
1496 case 5:
1497 _debug("extract offline");
1498 ret = afs_extract_data(call, true);
1499 if (ret < 0)
1500 return ret;
1501
1502 p = call->buffer;
1503 p[call->count] = 0;
1504 _debug("offline '%s'", p);
1505
1506 afs_extract_to_tmp(call);
1507 call->unmarshall++;
1508 /* Fall through */
1509
1510 /* extract the message of the day length */
1511 case 6:
1512 ret = afs_extract_data(call, true);
1513 if (ret < 0)
1514 return ret;
1515
1516 call->count = ntohl(call->tmp);
1517 _debug("motd length: %u", call->count);
1518 if (call->count >= AFSNAMEMAX)
1519 return afs_protocol_error(call, -EBADMSG,
1520 afs_eproto_motd_len);
1521 size = (call->count + 3) & ~3; /* It's padded */
1522 afs_extract_to_buf(call, size);
1523 call->unmarshall++;
1524 /* Fall through */
1525
1526 /* extract the message of the day */
1527 case 7:
1528 _debug("extract motd");
1529 ret = afs_extract_data(call, false);
1530 if (ret < 0)
1531 return ret;
1532
1533 p = call->buffer;
1534 p[call->count] = 0;
1535 _debug("motd '%s'", p);
1536
1537 call->unmarshall++;
1538 /* Fall through */
1539
1540 case 8:
1541 break;
1542 }
1543
1544 _leave(" = 0 [done]");
1545 return 0;
1546 }
1547
1548 /*
1549 * YFS.GetVolumeStatus operation type
1550 */
1551 static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
1552 .name = "YFS.GetVolumeStatus",
1553 .op = yfs_FS_GetVolumeStatus,
1554 .deliver = yfs_deliver_fs_get_volume_status,
1555 .destructor = afs_flat_call_destructor,
1556 };
1557
1558 /*
1559 * fetch the status of a volume
1560 */
1561 int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
1562 struct afs_volume_status *vs)
1563 {
1564 struct afs_vnode *vnode = fc->vnode;
1565 struct afs_call *call;
1566 struct afs_net *net = afs_v2net(vnode);
1567 __be32 *bp;
1568
1569 _enter("");
1570
1571 call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus,
1572 sizeof(__be32) * 2 +
1573 sizeof(struct yfs_xdr_u64),
1574 max_t(size_t,
1575 sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
1576 sizeof(__be32),
1577 AFSOPAQUEMAX + 1));
1578 if (!call)
1579 return -ENOMEM;
1580
1581 call->key = fc->key;
1582 call->out_volstatus = vs;
1583
1584 /* marshall the parameters */
1585 bp = call->request;
1586 bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
1587 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1588 bp = xdr_encode_u64(bp, vnode->fid.vid);
1589 yfs_check_req(call, bp);
1590
1591 afs_use_fs_server(call, fc->cbi);
1592 trace_afs_make_fs_call(call, &vnode->fid);
1593 afs_set_fc_call(call, fc);
1594 afs_make_call(&fc->ac, call, GFP_NOFS);
1595 return afs_wait_for_call_to_complete(call, &fc->ac);
1596 }
1597
1598 /*
1599 * YFS.SetLock operation type
1600 */
1601 static const struct afs_call_type yfs_RXYFSSetLock = {
1602 .name = "YFS.SetLock",
1603 .op = yfs_FS_SetLock,
1604 .deliver = yfs_deliver_status_and_volsync,
1605 .done = afs_lock_op_done,
1606 .destructor = afs_flat_call_destructor,
1607 };
1608
1609 /*
1610 * YFS.ExtendLock operation type
1611 */
1612 static const struct afs_call_type yfs_RXYFSExtendLock = {
1613 .name = "YFS.ExtendLock",
1614 .op = yfs_FS_ExtendLock,
1615 .deliver = yfs_deliver_status_and_volsync,
1616 .done = afs_lock_op_done,
1617 .destructor = afs_flat_call_destructor,
1618 };
1619
1620 /*
1621 * YFS.ReleaseLock operation type
1622 */
1623 static const struct afs_call_type yfs_RXYFSReleaseLock = {
1624 .name = "YFS.ReleaseLock",
1625 .op = yfs_FS_ReleaseLock,
1626 .deliver = yfs_deliver_status_and_volsync,
1627 .destructor = afs_flat_call_destructor,
1628 };
1629
1630 /*
1631 * Set a lock on a file
1632 */
1633 int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
1634 struct afs_status_cb *scb)
1635 {
1636 struct afs_vnode *vnode = fc->vnode;
1637 struct afs_call *call;
1638 struct afs_net *net = afs_v2net(vnode);
1639 __be32 *bp;
1640
1641 _enter("");
1642
1643 call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock,
1644 sizeof(__be32) * 2 +
1645 sizeof(struct yfs_xdr_YFSFid) +
1646 sizeof(__be32),
1647 sizeof(struct yfs_xdr_YFSFetchStatus) +
1648 sizeof(struct yfs_xdr_YFSVolSync));
1649 if (!call)
1650 return -ENOMEM;
1651
1652 call->key = fc->key;
1653 call->lvnode = vnode;
1654 call->out_scb = scb;
1655
1656 /* marshall the parameters */
1657 bp = call->request;
1658 bp = xdr_encode_u32(bp, YFSSETLOCK);
1659 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1660 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1661 bp = xdr_encode_u32(bp, type);
1662 yfs_check_req(call, bp);
1663
1664 afs_use_fs_server(call, fc->cbi);
1665 trace_afs_make_fs_calli(call, &vnode->fid, type);
1666 afs_set_fc_call(call, fc);
1667 afs_make_call(&fc->ac, call, GFP_NOFS);
1668 return afs_wait_for_call_to_complete(call, &fc->ac);
1669 }
1670
1671 /*
1672 * extend a lock on a file
1673 */
1674 int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1675 {
1676 struct afs_vnode *vnode = fc->vnode;
1677 struct afs_call *call;
1678 struct afs_net *net = afs_v2net(vnode);
1679 __be32 *bp;
1680
1681 _enter("");
1682
1683 call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock,
1684 sizeof(__be32) * 2 +
1685 sizeof(struct yfs_xdr_YFSFid),
1686 sizeof(struct yfs_xdr_YFSFetchStatus) +
1687 sizeof(struct yfs_xdr_YFSVolSync));
1688 if (!call)
1689 return -ENOMEM;
1690
1691 call->key = fc->key;
1692 call->lvnode = vnode;
1693 call->out_scb = scb;
1694
1695 /* marshall the parameters */
1696 bp = call->request;
1697 bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
1698 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1699 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1700 yfs_check_req(call, bp);
1701
1702 afs_use_fs_server(call, fc->cbi);
1703 trace_afs_make_fs_call(call, &vnode->fid);
1704 afs_set_fc_call(call, fc);
1705 afs_make_call(&fc->ac, call, GFP_NOFS);
1706 return afs_wait_for_call_to_complete(call, &fc->ac);
1707 }
1708
1709 /*
1710 * release a lock on a file
1711 */
1712 int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1713 {
1714 struct afs_vnode *vnode = fc->vnode;
1715 struct afs_call *call;
1716 struct afs_net *net = afs_v2net(vnode);
1717 __be32 *bp;
1718
1719 _enter("");
1720
1721 call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock,
1722 sizeof(__be32) * 2 +
1723 sizeof(struct yfs_xdr_YFSFid),
1724 sizeof(struct yfs_xdr_YFSFetchStatus) +
1725 sizeof(struct yfs_xdr_YFSVolSync));
1726 if (!call)
1727 return -ENOMEM;
1728
1729 call->key = fc->key;
1730 call->lvnode = vnode;
1731 call->out_scb = scb;
1732
1733 /* marshall the parameters */
1734 bp = call->request;
1735 bp = xdr_encode_u32(bp, YFSRELEASELOCK);
1736 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1737 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1738 yfs_check_req(call, bp);
1739
1740 afs_use_fs_server(call, fc->cbi);
1741 trace_afs_make_fs_call(call, &vnode->fid);
1742 afs_set_fc_call(call, fc);
1743 afs_make_call(&fc->ac, call, GFP_NOFS);
1744 return afs_wait_for_call_to_complete(call, &fc->ac);
1745 }
1746
1747 /*
1748 * YFS.FetchStatus operation type
1749 */
1750 static const struct afs_call_type yfs_RXYFSFetchStatus = {
1751 .name = "YFS.FetchStatus",
1752 .op = yfs_FS_FetchStatus,
1753 .deliver = yfs_deliver_fs_status_cb_and_volsync,
1754 .destructor = afs_flat_call_destructor,
1755 };
1756
1757 /*
1758 * Fetch the status information for a fid without needing a vnode handle.
1759 */
1760 int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
1761 struct afs_net *net,
1762 struct afs_fid *fid,
1763 struct afs_status_cb *scb,
1764 struct afs_volsync *volsync)
1765 {
1766 struct afs_call *call;
1767 __be32 *bp;
1768
1769 _enter(",%x,{%llx:%llu},,",
1770 key_serial(fc->key), fid->vid, fid->vnode);
1771
1772 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus,
1773 sizeof(__be32) * 2 +
1774 sizeof(struct yfs_xdr_YFSFid),
1775 sizeof(struct yfs_xdr_YFSFetchStatus) +
1776 sizeof(struct yfs_xdr_YFSCallBack) +
1777 sizeof(struct yfs_xdr_YFSVolSync));
1778 if (!call) {
1779 fc->ac.error = -ENOMEM;
1780 return -ENOMEM;
1781 }
1782
1783 call->key = fc->key;
1784 call->out_scb = scb;
1785 call->out_volsync = volsync;
1786
1787 /* marshall the parameters */
1788 bp = call->request;
1789 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
1790 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1791 bp = xdr_encode_YFSFid(bp, fid);
1792 yfs_check_req(call, bp);
1793
1794 afs_use_fs_server(call, fc->cbi);
1795 trace_afs_make_fs_call(call, fid);
1796 afs_set_fc_call(call, fc);
1797 afs_make_call(&fc->ac, call, GFP_NOFS);
1798 return afs_wait_for_call_to_complete(call, &fc->ac);
1799 }
1800
1801 /*
1802 * Deliver reply data to an YFS.InlineBulkStatus call
1803 */
1804 static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
1805 {
1806 struct afs_status_cb *scb;
1807 const __be32 *bp;
1808 u32 tmp;
1809 int ret;
1810
1811 _enter("{%u}", call->unmarshall);
1812
1813 switch (call->unmarshall) {
1814 case 0:
1815 afs_extract_to_tmp(call);
1816 call->unmarshall++;
1817 /* Fall through */
1818
1819 /* Extract the file status count and array in two steps */
1820 case 1:
1821 _debug("extract status count");
1822 ret = afs_extract_data(call, true);
1823 if (ret < 0)
1824 return ret;
1825
1826 tmp = ntohl(call->tmp);
1827 _debug("status count: %u/%u", tmp, call->count2);
1828 if (tmp != call->count2)
1829 return afs_protocol_error(call, -EBADMSG,
1830 afs_eproto_ibulkst_count);
1831
1832 call->count = 0;
1833 call->unmarshall++;
1834 more_counts:
1835 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
1836 /* Fall through */
1837
1838 case 2:
1839 _debug("extract status array %u", call->count);
1840 ret = afs_extract_data(call, true);
1841 if (ret < 0)
1842 return ret;
1843
1844 bp = call->buffer;
1845 scb = &call->out_scb[call->count];
1846 ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
1847 if (ret < 0)
1848 return ret;
1849
1850 call->count++;
1851 if (call->count < call->count2)
1852 goto more_counts;
1853
1854 call->count = 0;
1855 call->unmarshall++;
1856 afs_extract_to_tmp(call);
1857 /* Fall through */
1858
1859 /* Extract the callback count and array in two steps */
1860 case 3:
1861 _debug("extract CB count");
1862 ret = afs_extract_data(call, true);
1863 if (ret < 0)
1864 return ret;
1865
1866 tmp = ntohl(call->tmp);
1867 _debug("CB count: %u", tmp);
1868 if (tmp != call->count2)
1869 return afs_protocol_error(call, -EBADMSG,
1870 afs_eproto_ibulkst_cb_count);
1871 call->count = 0;
1872 call->unmarshall++;
1873 more_cbs:
1874 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
1875 /* Fall through */
1876
1877 case 4:
1878 _debug("extract CB array");
1879 ret = afs_extract_data(call, true);
1880 if (ret < 0)
1881 return ret;
1882
1883 _debug("unmarshall CB array");
1884 bp = call->buffer;
1885 scb = &call->out_scb[call->count];
1886 xdr_decode_YFSCallBack(&bp, call, scb);
1887 call->count++;
1888 if (call->count < call->count2)
1889 goto more_cbs;
1890
1891 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
1892 call->unmarshall++;
1893 /* Fall through */
1894
1895 case 5:
1896 ret = afs_extract_data(call, false);
1897 if (ret < 0)
1898 return ret;
1899
1900 bp = call->buffer;
1901 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1902
1903 call->unmarshall++;
1904 /* Fall through */
1905
1906 case 6:
1907 break;
1908 }
1909
1910 _leave(" = 0 [done]");
1911 return 0;
1912 }
1913
1914 /*
1915 * FS.InlineBulkStatus operation type
1916 */
1917 static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
1918 .name = "YFS.InlineBulkStatus",
1919 .op = yfs_FS_InlineBulkStatus,
1920 .deliver = yfs_deliver_fs_inline_bulk_status,
1921 .destructor = afs_flat_call_destructor,
1922 };
1923
1924 /*
1925 * Fetch the status information for up to 1024 files
1926 */
1927 int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
1928 struct afs_net *net,
1929 struct afs_fid *fids,
1930 struct afs_status_cb *statuses,
1931 unsigned int nr_fids,
1932 struct afs_volsync *volsync)
1933 {
1934 struct afs_call *call;
1935 __be32 *bp;
1936 int i;
1937
1938 _enter(",%x,{%llx:%llu},%u",
1939 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
1940
1941 call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus,
1942 sizeof(__be32) +
1943 sizeof(__be32) +
1944 sizeof(__be32) +
1945 sizeof(struct yfs_xdr_YFSFid) * nr_fids,
1946 sizeof(struct yfs_xdr_YFSFetchStatus));
1947 if (!call) {
1948 fc->ac.error = -ENOMEM;
1949 return -ENOMEM;
1950 }
1951
1952 call->key = fc->key;
1953 call->out_scb = statuses;
1954 call->out_volsync = volsync;
1955 call->count2 = nr_fids;
1956
1957 /* marshall the parameters */
1958 bp = call->request;
1959 bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
1960 bp = xdr_encode_u32(bp, 0); /* RPCFlags */
1961 bp = xdr_encode_u32(bp, nr_fids);
1962 for (i = 0; i < nr_fids; i++)
1963 bp = xdr_encode_YFSFid(bp, &fids[i]);
1964 yfs_check_req(call, bp);
1965
1966 afs_use_fs_server(call, fc->cbi);
1967 trace_afs_make_fs_call(call, &fids[0]);
1968 afs_set_fc_call(call, fc);
1969 afs_make_call(&fc->ac, call, GFP_NOFS);
1970 return afs_wait_for_call_to_complete(call, &fc->ac);
1971 }
1972
1973 /*
1974 * Deliver reply data to an YFS.FetchOpaqueACL.
1975 */
1976 static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
1977 {
1978 struct yfs_acl *yacl = call->out_yacl;
1979 struct afs_acl *acl;
1980 const __be32 *bp;
1981 unsigned int size;
1982 int ret;
1983
1984 _enter("{%u}", call->unmarshall);
1985
1986 switch (call->unmarshall) {
1987 case 0:
1988 afs_extract_to_tmp(call);
1989 call->unmarshall++;
1990 /* Fall through */
1991
1992 /* Extract the file ACL length */
1993 case 1:
1994 ret = afs_extract_data(call, true);
1995 if (ret < 0)
1996 return ret;
1997
1998 size = call->count2 = ntohl(call->tmp);
1999 size = round_up(size, 4);
2000
2001 if (yacl->flags & YFS_ACL_WANT_ACL) {
2002 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2003 if (!acl)
2004 return -ENOMEM;
2005 yacl->acl = acl;
2006 acl->size = call->count2;
2007 afs_extract_begin(call, acl->data, size);
2008 } else {
2009 afs_extract_discard(call, size);
2010 }
2011 call->unmarshall++;
2012 /* Fall through */
2013
2014 /* Extract the file ACL */
2015 case 2:
2016 ret = afs_extract_data(call, true);
2017 if (ret < 0)
2018 return ret;
2019
2020 afs_extract_to_tmp(call);
2021 call->unmarshall++;
2022 /* Fall through */
2023
2024 /* Extract the volume ACL length */
2025 case 3:
2026 ret = afs_extract_data(call, true);
2027 if (ret < 0)
2028 return ret;
2029
2030 size = call->count2 = ntohl(call->tmp);
2031 size = round_up(size, 4);
2032
2033 if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
2034 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2035 if (!acl)
2036 return -ENOMEM;
2037 yacl->vol_acl = acl;
2038 acl->size = call->count2;
2039 afs_extract_begin(call, acl->data, size);
2040 } else {
2041 afs_extract_discard(call, size);
2042 }
2043 call->unmarshall++;
2044 /* Fall through */
2045
2046 /* Extract the volume ACL */
2047 case 4:
2048 ret = afs_extract_data(call, true);
2049 if (ret < 0)
2050 return ret;
2051
2052 afs_extract_to_buf(call,
2053 sizeof(__be32) * 2 +
2054 sizeof(struct yfs_xdr_YFSFetchStatus) +
2055 sizeof(struct yfs_xdr_YFSVolSync));
2056 call->unmarshall++;
2057 /* Fall through */
2058
2059 /* extract the metadata */
2060 case 5:
2061 ret = afs_extract_data(call, false);
2062 if (ret < 0)
2063 return ret;
2064
2065 bp = call->buffer;
2066 yacl->inherit_flag = ntohl(*bp++);
2067 yacl->num_cleaned = ntohl(*bp++);
2068 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
2069 if (ret < 0)
2070 return ret;
2071 xdr_decode_YFSVolSync(&bp, call->out_volsync);
2072
2073 call->unmarshall++;
2074 /* Fall through */
2075
2076 case 6:
2077 break;
2078 }
2079
2080 _leave(" = 0 [done]");
2081 return 0;
2082 }
2083
2084 void yfs_free_opaque_acl(struct yfs_acl *yacl)
2085 {
2086 if (yacl) {
2087 kfree(yacl->acl);
2088 kfree(yacl->vol_acl);
2089 kfree(yacl);
2090 }
2091 }
2092
2093 /*
2094 * YFS.FetchOpaqueACL operation type
2095 */
2096 static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
2097 .name = "YFS.FetchOpaqueACL",
2098 .op = yfs_FS_FetchOpaqueACL,
2099 .deliver = yfs_deliver_fs_fetch_opaque_acl,
2100 .destructor = afs_flat_call_destructor,
2101 };
2102
2103 /*
2104 * Fetch the YFS advanced ACLs for a file.
2105 */
2106 struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc,
2107 struct yfs_acl *yacl,
2108 struct afs_status_cb *scb)
2109 {
2110 struct afs_vnode *vnode = fc->vnode;
2111 struct afs_call *call;
2112 struct afs_net *net = afs_v2net(vnode);
2113 __be32 *bp;
2114
2115 _enter(",%x,{%llx:%llu},,",
2116 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2117
2118 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL,
2119 sizeof(__be32) * 2 +
2120 sizeof(struct yfs_xdr_YFSFid),
2121 sizeof(__be32) * 2 +
2122 sizeof(struct yfs_xdr_YFSFetchStatus) +
2123 sizeof(struct yfs_xdr_YFSVolSync));
2124 if (!call) {
2125 fc->ac.error = -ENOMEM;
2126 return ERR_PTR(-ENOMEM);
2127 }
2128
2129 call->key = fc->key;
2130 call->out_yacl = yacl;
2131 call->out_scb = scb;
2132 call->out_volsync = NULL;
2133
2134 /* marshall the parameters */
2135 bp = call->request;
2136 bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
2137 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2138 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2139 yfs_check_req(call, bp);
2140
2141 afs_use_fs_server(call, fc->cbi);
2142 trace_afs_make_fs_call(call, &vnode->fid);
2143 afs_make_call(&fc->ac, call, GFP_KERNEL);
2144 return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
2145 }
2146
2147 /*
2148 * YFS.StoreOpaqueACL2 operation type
2149 */
2150 static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
2151 .name = "YFS.StoreOpaqueACL2",
2152 .op = yfs_FS_StoreOpaqueACL2,
2153 .deliver = yfs_deliver_status_and_volsync,
2154 .destructor = afs_flat_call_destructor,
2155 };
2156
2157 /*
2158 * Fetch the YFS ACL for a file.
2159 */
2160 int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl,
2161 struct afs_status_cb *scb)
2162 {
2163 struct afs_vnode *vnode = fc->vnode;
2164 struct afs_call *call;
2165 struct afs_net *net = afs_v2net(vnode);
2166 size_t size;
2167 __be32 *bp;
2168
2169 _enter(",%x,{%llx:%llu},,",
2170 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2171
2172 size = round_up(acl->size, 4);
2173 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2,
2174 sizeof(__be32) * 2 +
2175 sizeof(struct yfs_xdr_YFSFid) +
2176 sizeof(__be32) + size,
2177 sizeof(struct yfs_xdr_YFSFetchStatus) +
2178 sizeof(struct yfs_xdr_YFSVolSync));
2179 if (!call) {
2180 fc->ac.error = -ENOMEM;
2181 return -ENOMEM;
2182 }
2183
2184 call->key = fc->key;
2185 call->out_scb = scb;
2186 call->out_volsync = NULL;
2187
2188 /* marshall the parameters */
2189 bp = call->request;
2190 bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
2191 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2192 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2193 bp = xdr_encode_u32(bp, acl->size);
2194 memcpy(bp, acl->data, acl->size);
2195 if (acl->size != size)
2196 memset((void *)bp + acl->size, 0, size - acl->size);
2197 yfs_check_req(call, bp);
2198
2199 trace_afs_make_fs_call(call, &vnode->fid);
2200 afs_make_call(&fc->ac, call, GFP_KERNEL);
2201 return afs_wait_for_call_to_complete(call, &fc->ac);
2202 }
Linux with added FPC-III support