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 #define xdr_size(x) (sizeof(*x) / sizeof(__be32))
19
xdr_decode_YFSFid(const __be32 ** _bp,struct afs_fid * fid)20 static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
21 {
22 const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
23
24 fid->vid = xdr_to_u64(x->volume);
25 fid->vnode = xdr_to_u64(x->vnode.lo);
26 fid->vnode_hi = ntohl(x->vnode.hi);
27 fid->unique = ntohl(x->vnode.unique);
28 *_bp += xdr_size(x);
29 }
30
xdr_encode_u32(__be32 * bp,u32 n)31 static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
32 {
33 *bp++ = htonl(n);
34 return bp;
35 }
36
xdr_encode_u64(__be32 * bp,u64 n)37 static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
38 {
39 struct yfs_xdr_u64 *x = (void *)bp;
40
41 *x = u64_to_xdr(n);
42 return bp + xdr_size(x);
43 }
44
xdr_encode_YFSFid(__be32 * bp,struct afs_fid * fid)45 static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
46 {
47 struct yfs_xdr_YFSFid *x = (void *)bp;
48
49 x->volume = u64_to_xdr(fid->vid);
50 x->vnode.lo = u64_to_xdr(fid->vnode);
51 x->vnode.hi = htonl(fid->vnode_hi);
52 x->vnode.unique = htonl(fid->unique);
53 return bp + xdr_size(x);
54 }
55
xdr_strlen(unsigned int len)56 static size_t xdr_strlen(unsigned int len)
57 {
58 return sizeof(__be32) + round_up(len, sizeof(__be32));
59 }
60
xdr_encode_string(__be32 * bp,const char * p,unsigned int len)61 static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
62 {
63 bp = xdr_encode_u32(bp, len);
64 bp = memcpy(bp, p, len);
65 if (len & 3) {
66 unsigned int pad = 4 - (len & 3);
67
68 memset((u8 *)bp + len, 0, pad);
69 len += pad;
70 }
71
72 return bp + len / sizeof(__be32);
73 }
74
xdr_encode_name(__be32 * bp,const struct qstr * p)75 static __be32 *xdr_encode_name(__be32 *bp, const struct qstr *p)
76 {
77 return xdr_encode_string(bp, p->name, p->len);
78 }
79
linux_to_yfs_time(const struct timespec64 * t)80 static s64 linux_to_yfs_time(const struct timespec64 *t)
81 {
82 /* Convert to 100ns intervals. */
83 return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
84 }
85
xdr_encode_YFSStoreStatus(__be32 * bp,mode_t * mode,const struct timespec64 * t)86 static __be32 *xdr_encode_YFSStoreStatus(__be32 *bp, mode_t *mode,
87 const struct timespec64 *t)
88 {
89 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
90 mode_t masked_mode = mode ? *mode & S_IALLUGO : 0;
91 s64 mtime = linux_to_yfs_time(t);
92 u32 mask = AFS_SET_MTIME;
93
94 mask |= mode ? AFS_SET_MODE : 0;
95
96 x->mask = htonl(mask);
97 x->mode = htonl(masked_mode);
98 x->mtime_client = u64_to_xdr(mtime);
99 x->owner = u64_to_xdr(0);
100 x->group = u64_to_xdr(0);
101 return bp + xdr_size(x);
102 }
103
104 /*
105 * Convert a signed 100ns-resolution 64-bit time into a timespec.
106 */
yfs_time_to_linux(s64 t)107 static struct timespec64 yfs_time_to_linux(s64 t)
108 {
109 struct timespec64 ts;
110 u64 abs_t;
111
112 /*
113 * Unfortunately can not use normal 64 bit division on 32 bit arch, but
114 * the alternative, do_div, does not work with negative numbers so have
115 * to special case them
116 */
117 if (t < 0) {
118 abs_t = -t;
119 ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
120 ts.tv_nsec = -ts.tv_nsec;
121 ts.tv_sec = -abs_t;
122 } else {
123 abs_t = t;
124 ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
125 ts.tv_sec = abs_t;
126 }
127
128 return ts;
129 }
130
xdr_to_time(const struct yfs_xdr_u64 xdr)131 static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
132 {
133 s64 t = xdr_to_u64(xdr);
134
135 return yfs_time_to_linux(t);
136 }
137
yfs_check_req(struct afs_call * call,__be32 * bp)138 static void yfs_check_req(struct afs_call *call, __be32 *bp)
139 {
140 size_t len = (void *)bp - call->request;
141
142 if (len > call->request_size)
143 pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
144 call->type->name, len, call->request_size);
145 else if (len < call->request_size)
146 pr_warn("kAFS: %s: Request buffer underflow (%zu<%u)\n",
147 call->type->name, len, call->request_size);
148 }
149
150 /*
151 * Dump a bad file status record.
152 */
xdr_dump_bad(const __be32 * bp)153 static void xdr_dump_bad(const __be32 *bp)
154 {
155 __be32 x[4];
156 int i;
157
158 pr_notice("YFS XDR: Bad status record\n");
159 for (i = 0; i < 6 * 4 * 4; i += 16) {
160 memcpy(x, bp, 16);
161 bp += 4;
162 pr_notice("%03x: %08x %08x %08x %08x\n",
163 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
164 }
165
166 memcpy(x, bp, 8);
167 pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1]));
168 }
169
170 /*
171 * Decode a YFSFetchStatus block
172 */
xdr_decode_YFSFetchStatus(const __be32 ** _bp,struct afs_call * call,struct afs_status_cb * scb)173 static void xdr_decode_YFSFetchStatus(const __be32 **_bp,
174 struct afs_call *call,
175 struct afs_status_cb *scb)
176 {
177 const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
178 struct afs_file_status *status = &scb->status;
179 u32 type;
180
181 status->abort_code = ntohl(xdr->abort_code);
182 if (status->abort_code != 0) {
183 if (status->abort_code == VNOVNODE)
184 status->nlink = 0;
185 scb->have_error = true;
186 goto advance;
187 }
188
189 type = ntohl(xdr->type);
190 switch (type) {
191 case AFS_FTYPE_FILE:
192 case AFS_FTYPE_DIR:
193 case AFS_FTYPE_SYMLINK:
194 status->type = type;
195 break;
196 default:
197 goto bad;
198 }
199
200 status->nlink = ntohl(xdr->nlink);
201 status->author = xdr_to_u64(xdr->author);
202 status->owner = xdr_to_u64(xdr->owner);
203 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
204 status->anon_access = ntohl(xdr->anon_access);
205 status->mode = ntohl(xdr->mode) & S_IALLUGO;
206 status->group = xdr_to_u64(xdr->group);
207 status->lock_count = ntohl(xdr->lock_count);
208
209 status->mtime_client = xdr_to_time(xdr->mtime_client);
210 status->mtime_server = xdr_to_time(xdr->mtime_server);
211 status->size = xdr_to_u64(xdr->size);
212 status->data_version = xdr_to_u64(xdr->data_version);
213 scb->have_status = true;
214 advance:
215 *_bp += xdr_size(xdr);
216 return;
217
218 bad:
219 xdr_dump_bad(*_bp);
220 afs_protocol_error(call, afs_eproto_bad_status);
221 goto advance;
222 }
223
224 /*
225 * Decode a YFSCallBack block
226 */
xdr_decode_YFSCallBack(const __be32 ** _bp,struct afs_call * call,struct afs_status_cb * scb)227 static void xdr_decode_YFSCallBack(const __be32 **_bp,
228 struct afs_call *call,
229 struct afs_status_cb *scb)
230 {
231 struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
232 struct afs_callback *cb = &scb->callback;
233 ktime_t cb_expiry;
234
235 cb_expiry = ktime_add(call->issue_time, xdr_to_u64(x->expiration_time) * 100);
236 cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC);
237 scb->have_cb = true;
238 *_bp += xdr_size(x);
239 }
240
241 /*
242 * Decode a YFSVolSync block
243 */
xdr_decode_YFSVolSync(const __be32 ** _bp,struct afs_volsync * volsync)244 static void xdr_decode_YFSVolSync(const __be32 **_bp,
245 struct afs_volsync *volsync)
246 {
247 struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
248 u64 creation, update;
249
250 if (volsync) {
251 creation = xdr_to_u64(x->vol_creation_date);
252 do_div(creation, 10 * 1000 * 1000);
253 volsync->creation = creation;
254 update = xdr_to_u64(x->vol_update_date);
255 do_div(update, 10 * 1000 * 1000);
256 volsync->update = update;
257 }
258
259 *_bp += xdr_size(x);
260 }
261
262 /*
263 * Encode the requested attributes into a YFSStoreStatus block
264 */
xdr_encode_YFS_StoreStatus(__be32 * bp,struct iattr * attr)265 static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
266 {
267 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
268 s64 mtime = 0, owner = 0, group = 0;
269 u32 mask = 0, mode = 0;
270
271 mask = 0;
272 if (attr->ia_valid & ATTR_MTIME) {
273 mask |= AFS_SET_MTIME;
274 mtime = linux_to_yfs_time(&attr->ia_mtime);
275 }
276
277 if (attr->ia_valid & ATTR_UID) {
278 mask |= AFS_SET_OWNER;
279 owner = from_kuid(&init_user_ns, attr->ia_uid);
280 }
281
282 if (attr->ia_valid & ATTR_GID) {
283 mask |= AFS_SET_GROUP;
284 group = from_kgid(&init_user_ns, attr->ia_gid);
285 }
286
287 if (attr->ia_valid & ATTR_MODE) {
288 mask |= AFS_SET_MODE;
289 mode = attr->ia_mode & S_IALLUGO;
290 }
291
292 x->mask = htonl(mask);
293 x->mode = htonl(mode);
294 x->mtime_client = u64_to_xdr(mtime);
295 x->owner = u64_to_xdr(owner);
296 x->group = u64_to_xdr(group);
297 return bp + xdr_size(x);
298 }
299
300 /*
301 * Decode a YFSFetchVolumeStatus block.
302 */
xdr_decode_YFSFetchVolumeStatus(const __be32 ** _bp,struct afs_volume_status * vs)303 static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
304 struct afs_volume_status *vs)
305 {
306 const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
307 u32 flags;
308
309 vs->vid = xdr_to_u64(x->vid);
310 vs->parent_id = xdr_to_u64(x->parent_id);
311 flags = ntohl(x->flags);
312 vs->online = flags & yfs_FVSOnline;
313 vs->in_service = flags & yfs_FVSInservice;
314 vs->blessed = flags & yfs_FVSBlessed;
315 vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
316 vs->type = ntohl(x->type);
317 vs->min_quota = 0;
318 vs->max_quota = xdr_to_u64(x->max_quota);
319 vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
320 vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
321 vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
322 vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
323 vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
324 *_bp += sizeof(*x) / sizeof(__be32);
325 }
326
327 /*
328 * Deliver reply data to operations that just return a file status and a volume
329 * sync record.
330 */
yfs_deliver_status_and_volsync(struct afs_call * call)331 static int yfs_deliver_status_and_volsync(struct afs_call *call)
332 {
333 struct afs_operation *op = call->op;
334 const __be32 *bp;
335 int ret;
336
337 ret = afs_transfer_reply(call);
338 if (ret < 0)
339 return ret;
340
341 bp = call->buffer;
342 xdr_decode_YFSFetchStatus(&bp, call, &op->file[0].scb);
343 xdr_decode_YFSVolSync(&bp, &op->volsync);
344
345 _leave(" = 0 [done]");
346 return 0;
347 }
348
349 /*
350 * Deliver reply data to an YFS.FetchData64.
351 */
yfs_deliver_fs_fetch_data64(struct afs_call * call)352 static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
353 {
354 struct afs_operation *op = call->op;
355 struct afs_vnode_param *vp = &op->file[0];
356 struct afs_read *req = op->fetch.req;
357 const __be32 *bp;
358 size_t count_before;
359 int ret;
360
361 _enter("{%u,%zu, %zu/%llu}",
362 call->unmarshall, call->iov_len, iov_iter_count(call->iter),
363 req->actual_len);
364
365 switch (call->unmarshall) {
366 case 0:
367 req->actual_len = 0;
368 afs_extract_to_tmp64(call);
369 call->unmarshall++;
370 fallthrough;
371
372 /* Extract the returned data length into ->actual_len. This
373 * may indicate more or less data than was requested will be
374 * returned.
375 */
376 case 1:
377 _debug("extract data length");
378 ret = afs_extract_data(call, true);
379 if (ret < 0)
380 return ret;
381
382 req->actual_len = be64_to_cpu(call->tmp64);
383 _debug("DATA length: %llu", req->actual_len);
384
385 if (req->actual_len == 0)
386 goto no_more_data;
387
388 call->iter = req->iter;
389 call->iov_len = min(req->actual_len, req->len);
390 call->unmarshall++;
391 fallthrough;
392
393 /* extract the returned data */
394 case 2:
395 count_before = call->iov_len;
396 _debug("extract data %zu/%llu", count_before, req->actual_len);
397
398 ret = afs_extract_data(call, true);
399 if (req->subreq) {
400 req->subreq->transferred += count_before - call->iov_len;
401 netfs_read_subreq_progress(req->subreq, false);
402 }
403 if (ret < 0)
404 return ret;
405
406 call->iter = &call->def_iter;
407 if (req->actual_len <= req->len)
408 goto no_more_data;
409
410 /* Discard any excess data the server gave us */
411 afs_extract_discard(call, req->actual_len - req->len);
412 call->unmarshall = 3;
413 fallthrough;
414
415 case 3:
416 _debug("extract discard %zu/%llu",
417 iov_iter_count(call->iter), req->actual_len - req->len);
418
419 ret = afs_extract_data(call, true);
420 if (ret < 0)
421 return ret;
422
423 no_more_data:
424 call->unmarshall = 4;
425 afs_extract_to_buf(call,
426 sizeof(struct yfs_xdr_YFSFetchStatus) +
427 sizeof(struct yfs_xdr_YFSCallBack) +
428 sizeof(struct yfs_xdr_YFSVolSync));
429 fallthrough;
430
431 /* extract the metadata */
432 case 4:
433 ret = afs_extract_data(call, false);
434 if (ret < 0)
435 return ret;
436
437 bp = call->buffer;
438 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
439 xdr_decode_YFSCallBack(&bp, call, &vp->scb);
440 xdr_decode_YFSVolSync(&bp, &op->volsync);
441
442 req->data_version = vp->scb.status.data_version;
443 req->file_size = vp->scb.status.size;
444
445 call->unmarshall++;
446 fallthrough;
447
448 case 5:
449 break;
450 }
451
452 _leave(" = 0 [done]");
453 return 0;
454 }
455
456 /*
457 * YFS.FetchData64 operation type
458 */
459 static const struct afs_call_type yfs_RXYFSFetchData64 = {
460 .name = "YFS.FetchData64",
461 .op = yfs_FS_FetchData64,
462 .deliver = yfs_deliver_fs_fetch_data64,
463 .destructor = afs_flat_call_destructor,
464 };
465
466 /*
467 * Fetch data from a file.
468 */
yfs_fs_fetch_data(struct afs_operation * op)469 void yfs_fs_fetch_data(struct afs_operation *op)
470 {
471 struct afs_vnode_param *vp = &op->file[0];
472 struct afs_read *req = op->fetch.req;
473 struct afs_call *call;
474 __be32 *bp;
475
476 _enter(",%x,{%llx:%llu},%llx,%llx",
477 key_serial(op->key), vp->fid.vid, vp->fid.vnode,
478 req->pos, req->len);
479
480 call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchData64,
481 sizeof(__be32) * 2 +
482 sizeof(struct yfs_xdr_YFSFid) +
483 sizeof(struct yfs_xdr_u64) * 2,
484 sizeof(struct yfs_xdr_YFSFetchStatus) +
485 sizeof(struct yfs_xdr_YFSCallBack) +
486 sizeof(struct yfs_xdr_YFSVolSync));
487 if (!call)
488 return afs_op_nomem(op);
489
490 req->call_debug_id = call->debug_id;
491
492 /* marshall the parameters */
493 bp = call->request;
494 bp = xdr_encode_u32(bp, YFSFETCHDATA64);
495 bp = xdr_encode_u32(bp, 0); /* RPC flags */
496 bp = xdr_encode_YFSFid(bp, &vp->fid);
497 bp = xdr_encode_u64(bp, req->pos);
498 bp = xdr_encode_u64(bp, req->len);
499 yfs_check_req(call, bp);
500
501 call->fid = vp->fid;
502 trace_afs_make_fs_call(call, &vp->fid);
503 afs_make_op_call(op, call, GFP_NOFS);
504 }
505
506 /*
507 * Deliver reply data for YFS.CreateFile or YFS.MakeDir.
508 */
yfs_deliver_fs_create_vnode(struct afs_call * call)509 static int yfs_deliver_fs_create_vnode(struct afs_call *call)
510 {
511 struct afs_operation *op = call->op;
512 struct afs_vnode_param *dvp = &op->file[0];
513 struct afs_vnode_param *vp = &op->file[1];
514 const __be32 *bp;
515 int ret;
516
517 _enter("{%u}", call->unmarshall);
518
519 ret = afs_transfer_reply(call);
520 if (ret < 0)
521 return ret;
522
523 /* unmarshall the reply once we've received all of it */
524 bp = call->buffer;
525 xdr_decode_YFSFid(&bp, &op->file[1].fid);
526 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
527 xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
528 xdr_decode_YFSCallBack(&bp, call, &vp->scb);
529 xdr_decode_YFSVolSync(&bp, &op->volsync);
530
531 _leave(" = 0 [done]");
532 return 0;
533 }
534
535 /*
536 * FS.CreateFile and FS.MakeDir operation type
537 */
538 static const struct afs_call_type afs_RXFSCreateFile = {
539 .name = "YFS.CreateFile",
540 .op = yfs_FS_CreateFile,
541 .deliver = yfs_deliver_fs_create_vnode,
542 .destructor = afs_flat_call_destructor,
543 };
544
545 /*
546 * Create a file.
547 */
yfs_fs_create_file(struct afs_operation * op)548 void yfs_fs_create_file(struct afs_operation *op)
549 {
550 const struct qstr *name = &op->dentry->d_name;
551 struct afs_vnode_param *dvp = &op->file[0];
552 struct afs_call *call;
553 size_t reqsz, rplsz;
554 __be32 *bp;
555
556 _enter("");
557
558 reqsz = (sizeof(__be32) +
559 sizeof(__be32) +
560 sizeof(struct yfs_xdr_YFSFid) +
561 xdr_strlen(name->len) +
562 sizeof(struct yfs_xdr_YFSStoreStatus) +
563 sizeof(__be32));
564 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
565 sizeof(struct yfs_xdr_YFSFetchStatus) +
566 sizeof(struct yfs_xdr_YFSFetchStatus) +
567 sizeof(struct yfs_xdr_YFSCallBack) +
568 sizeof(struct yfs_xdr_YFSVolSync));
569
570 call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, reqsz, rplsz);
571 if (!call)
572 return afs_op_nomem(op);
573
574 /* marshall the parameters */
575 bp = call->request;
576 bp = xdr_encode_u32(bp, YFSCREATEFILE);
577 bp = xdr_encode_u32(bp, 0); /* RPC flags */
578 bp = xdr_encode_YFSFid(bp, &dvp->fid);
579 bp = xdr_encode_name(bp, name);
580 bp = xdr_encode_YFSStoreStatus(bp, &op->create.mode, &op->mtime);
581 bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
582 yfs_check_req(call, bp);
583
584 call->fid = dvp->fid;
585 trace_afs_make_fs_call1(call, &dvp->fid, name);
586 afs_make_op_call(op, call, GFP_NOFS);
587 }
588
589 static const struct afs_call_type yfs_RXFSMakeDir = {
590 .name = "YFS.MakeDir",
591 .op = yfs_FS_MakeDir,
592 .deliver = yfs_deliver_fs_create_vnode,
593 .destructor = afs_flat_call_destructor,
594 };
595
596 /*
597 * Make a directory.
598 */
yfs_fs_make_dir(struct afs_operation * op)599 void yfs_fs_make_dir(struct afs_operation *op)
600 {
601 const struct qstr *name = &op->dentry->d_name;
602 struct afs_vnode_param *dvp = &op->file[0];
603 struct afs_call *call;
604 size_t reqsz, rplsz;
605 __be32 *bp;
606
607 _enter("");
608
609 reqsz = (sizeof(__be32) +
610 sizeof(struct yfs_xdr_RPCFlags) +
611 sizeof(struct yfs_xdr_YFSFid) +
612 xdr_strlen(name->len) +
613 sizeof(struct yfs_xdr_YFSStoreStatus));
614 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
615 sizeof(struct yfs_xdr_YFSFetchStatus) +
616 sizeof(struct yfs_xdr_YFSFetchStatus) +
617 sizeof(struct yfs_xdr_YFSCallBack) +
618 sizeof(struct yfs_xdr_YFSVolSync));
619
620 call = afs_alloc_flat_call(op->net, &yfs_RXFSMakeDir, reqsz, rplsz);
621 if (!call)
622 return afs_op_nomem(op);
623
624 /* marshall the parameters */
625 bp = call->request;
626 bp = xdr_encode_u32(bp, YFSMAKEDIR);
627 bp = xdr_encode_u32(bp, 0); /* RPC flags */
628 bp = xdr_encode_YFSFid(bp, &dvp->fid);
629 bp = xdr_encode_name(bp, name);
630 bp = xdr_encode_YFSStoreStatus(bp, &op->create.mode, &op->mtime);
631 yfs_check_req(call, bp);
632
633 call->fid = dvp->fid;
634 trace_afs_make_fs_call1(call, &dvp->fid, name);
635 afs_make_op_call(op, call, GFP_NOFS);
636 }
637
638 /*
639 * Deliver reply data to a YFS.RemoveFile2 operation.
640 */
yfs_deliver_fs_remove_file2(struct afs_call * call)641 static int yfs_deliver_fs_remove_file2(struct afs_call *call)
642 {
643 struct afs_operation *op = call->op;
644 struct afs_vnode_param *dvp = &op->file[0];
645 struct afs_vnode_param *vp = &op->file[1];
646 struct afs_fid fid;
647 const __be32 *bp;
648 int ret;
649
650 _enter("{%u}", call->unmarshall);
651
652 ret = afs_transfer_reply(call);
653 if (ret < 0)
654 return ret;
655
656 bp = call->buffer;
657 xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
658 xdr_decode_YFSFid(&bp, &fid);
659 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
660 /* Was deleted if vnode->status.abort_code == VNOVNODE. */
661
662 xdr_decode_YFSVolSync(&bp, &op->volsync);
663 return 0;
664 }
665
yfs_done_fs_remove_file2(struct afs_call * call)666 static void yfs_done_fs_remove_file2(struct afs_call *call)
667 {
668 if (call->error == -ECONNABORTED &&
669 (call->abort_code == RX_INVALID_OPERATION ||
670 call->abort_code == RXGEN_OPCODE)) {
671 set_bit(AFS_SERVER_FL_NO_RM2, &call->op->server->flags);
672 call->op->flags |= AFS_OPERATION_DOWNGRADE;
673 }
674 }
675
676 /*
677 * YFS.RemoveFile2 operation type.
678 */
679 static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
680 .name = "YFS.RemoveFile2",
681 .op = yfs_FS_RemoveFile2,
682 .deliver = yfs_deliver_fs_remove_file2,
683 .done = yfs_done_fs_remove_file2,
684 .destructor = afs_flat_call_destructor,
685 };
686
687 /*
688 * Remove a file and retrieve new file status.
689 */
yfs_fs_remove_file2(struct afs_operation * op)690 void yfs_fs_remove_file2(struct afs_operation *op)
691 {
692 struct afs_vnode_param *dvp = &op->file[0];
693 const struct qstr *name = &op->dentry->d_name;
694 struct afs_call *call;
695 __be32 *bp;
696
697 _enter("");
698
699 call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile2,
700 sizeof(__be32) +
701 sizeof(struct yfs_xdr_RPCFlags) +
702 sizeof(struct yfs_xdr_YFSFid) +
703 xdr_strlen(name->len),
704 sizeof(struct yfs_xdr_YFSFetchStatus) +
705 sizeof(struct yfs_xdr_YFSFid) +
706 sizeof(struct yfs_xdr_YFSFetchStatus) +
707 sizeof(struct yfs_xdr_YFSVolSync));
708 if (!call)
709 return afs_op_nomem(op);
710
711 /* marshall the parameters */
712 bp = call->request;
713 bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
714 bp = xdr_encode_u32(bp, 0); /* RPC flags */
715 bp = xdr_encode_YFSFid(bp, &dvp->fid);
716 bp = xdr_encode_name(bp, name);
717 yfs_check_req(call, bp);
718
719 call->fid = dvp->fid;
720 trace_afs_make_fs_call1(call, &dvp->fid, name);
721 afs_make_op_call(op, call, GFP_NOFS);
722 }
723
724 /*
725 * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
726 */
yfs_deliver_fs_remove(struct afs_call * call)727 static int yfs_deliver_fs_remove(struct afs_call *call)
728 {
729 struct afs_operation *op = call->op;
730 struct afs_vnode_param *dvp = &op->file[0];
731 const __be32 *bp;
732 int ret;
733
734 _enter("{%u}", call->unmarshall);
735
736 ret = afs_transfer_reply(call);
737 if (ret < 0)
738 return ret;
739
740 bp = call->buffer;
741 xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
742 xdr_decode_YFSVolSync(&bp, &op->volsync);
743 return 0;
744 }
745
746 /*
747 * FS.RemoveDir and FS.RemoveFile operation types.
748 */
749 static const struct afs_call_type yfs_RXYFSRemoveFile = {
750 .name = "YFS.RemoveFile",
751 .op = yfs_FS_RemoveFile,
752 .deliver = yfs_deliver_fs_remove,
753 .destructor = afs_flat_call_destructor,
754 };
755
756 /*
757 * Remove a file.
758 */
yfs_fs_remove_file(struct afs_operation * op)759 void yfs_fs_remove_file(struct afs_operation *op)
760 {
761 const struct qstr *name = &op->dentry->d_name;
762 struct afs_vnode_param *dvp = &op->file[0];
763 struct afs_call *call;
764 __be32 *bp;
765
766 _enter("");
767
768 if (!test_bit(AFS_SERVER_FL_NO_RM2, &op->server->flags))
769 return yfs_fs_remove_file2(op);
770
771 call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile,
772 sizeof(__be32) +
773 sizeof(struct yfs_xdr_RPCFlags) +
774 sizeof(struct yfs_xdr_YFSFid) +
775 xdr_strlen(name->len),
776 sizeof(struct yfs_xdr_YFSFetchStatus) +
777 sizeof(struct yfs_xdr_YFSVolSync));
778 if (!call)
779 return afs_op_nomem(op);
780
781 /* marshall the parameters */
782 bp = call->request;
783 bp = xdr_encode_u32(bp, YFSREMOVEFILE);
784 bp = xdr_encode_u32(bp, 0); /* RPC flags */
785 bp = xdr_encode_YFSFid(bp, &dvp->fid);
786 bp = xdr_encode_name(bp, name);
787 yfs_check_req(call, bp);
788
789 call->fid = dvp->fid;
790 trace_afs_make_fs_call1(call, &dvp->fid, name);
791 afs_make_op_call(op, call, GFP_NOFS);
792 }
793
794 static const struct afs_call_type yfs_RXYFSRemoveDir = {
795 .name = "YFS.RemoveDir",
796 .op = yfs_FS_RemoveDir,
797 .deliver = yfs_deliver_fs_remove,
798 .destructor = afs_flat_call_destructor,
799 };
800
801 /*
802 * Remove a directory.
803 */
yfs_fs_remove_dir(struct afs_operation * op)804 void yfs_fs_remove_dir(struct afs_operation *op)
805 {
806 const struct qstr *name = &op->dentry->d_name;
807 struct afs_vnode_param *dvp = &op->file[0];
808 struct afs_call *call;
809 __be32 *bp;
810
811 _enter("");
812
813 call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveDir,
814 sizeof(__be32) +
815 sizeof(struct yfs_xdr_RPCFlags) +
816 sizeof(struct yfs_xdr_YFSFid) +
817 xdr_strlen(name->len),
818 sizeof(struct yfs_xdr_YFSFetchStatus) +
819 sizeof(struct yfs_xdr_YFSVolSync));
820 if (!call)
821 return afs_op_nomem(op);
822
823 /* marshall the parameters */
824 bp = call->request;
825 bp = xdr_encode_u32(bp, YFSREMOVEDIR);
826 bp = xdr_encode_u32(bp, 0); /* RPC flags */
827 bp = xdr_encode_YFSFid(bp, &dvp->fid);
828 bp = xdr_encode_name(bp, name);
829 yfs_check_req(call, bp);
830
831 call->fid = dvp->fid;
832 trace_afs_make_fs_call1(call, &dvp->fid, name);
833 afs_make_op_call(op, call, GFP_NOFS);
834 }
835
836 /*
837 * Deliver reply data to a YFS.Link operation.
838 */
yfs_deliver_fs_link(struct afs_call * call)839 static int yfs_deliver_fs_link(struct afs_call *call)
840 {
841 struct afs_operation *op = call->op;
842 struct afs_vnode_param *dvp = &op->file[0];
843 struct afs_vnode_param *vp = &op->file[1];
844 const __be32 *bp;
845 int ret;
846
847 _enter("{%u}", call->unmarshall);
848
849 ret = afs_transfer_reply(call);
850 if (ret < 0)
851 return ret;
852
853 bp = call->buffer;
854 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
855 xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
856 xdr_decode_YFSVolSync(&bp, &op->volsync);
857 _leave(" = 0 [done]");
858 return 0;
859 }
860
861 /*
862 * YFS.Link operation type.
863 */
864 static const struct afs_call_type yfs_RXYFSLink = {
865 .name = "YFS.Link",
866 .op = yfs_FS_Link,
867 .deliver = yfs_deliver_fs_link,
868 .destructor = afs_flat_call_destructor,
869 };
870
871 /*
872 * Make a hard link.
873 */
yfs_fs_link(struct afs_operation * op)874 void yfs_fs_link(struct afs_operation *op)
875 {
876 const struct qstr *name = &op->dentry->d_name;
877 struct afs_vnode_param *dvp = &op->file[0];
878 struct afs_vnode_param *vp = &op->file[1];
879 struct afs_call *call;
880 __be32 *bp;
881
882 _enter("");
883
884 call = afs_alloc_flat_call(op->net, &yfs_RXYFSLink,
885 sizeof(__be32) +
886 sizeof(struct yfs_xdr_RPCFlags) +
887 sizeof(struct yfs_xdr_YFSFid) +
888 xdr_strlen(name->len) +
889 sizeof(struct yfs_xdr_YFSFid),
890 sizeof(struct yfs_xdr_YFSFetchStatus) +
891 sizeof(struct yfs_xdr_YFSFetchStatus) +
892 sizeof(struct yfs_xdr_YFSVolSync));
893 if (!call)
894 return afs_op_nomem(op);
895
896 /* marshall the parameters */
897 bp = call->request;
898 bp = xdr_encode_u32(bp, YFSLINK);
899 bp = xdr_encode_u32(bp, 0); /* RPC flags */
900 bp = xdr_encode_YFSFid(bp, &dvp->fid);
901 bp = xdr_encode_name(bp, name);
902 bp = xdr_encode_YFSFid(bp, &vp->fid);
903 yfs_check_req(call, bp);
904
905 call->fid = vp->fid;
906 trace_afs_make_fs_call1(call, &vp->fid, name);
907 afs_make_op_call(op, call, GFP_NOFS);
908 }
909
910 /*
911 * Deliver reply data to a YFS.Symlink operation.
912 */
yfs_deliver_fs_symlink(struct afs_call * call)913 static int yfs_deliver_fs_symlink(struct afs_call *call)
914 {
915 struct afs_operation *op = call->op;
916 struct afs_vnode_param *dvp = &op->file[0];
917 struct afs_vnode_param *vp = &op->file[1];
918 const __be32 *bp;
919 int ret;
920
921 _enter("{%u}", call->unmarshall);
922
923 ret = afs_transfer_reply(call);
924 if (ret < 0)
925 return ret;
926
927 /* unmarshall the reply once we've received all of it */
928 bp = call->buffer;
929 xdr_decode_YFSFid(&bp, &vp->fid);
930 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
931 xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
932 xdr_decode_YFSVolSync(&bp, &op->volsync);
933
934 _leave(" = 0 [done]");
935 return 0;
936 }
937
938 /*
939 * YFS.Symlink operation type
940 */
941 static const struct afs_call_type yfs_RXYFSSymlink = {
942 .name = "YFS.Symlink",
943 .op = yfs_FS_Symlink,
944 .deliver = yfs_deliver_fs_symlink,
945 .destructor = afs_flat_call_destructor,
946 };
947
948 /*
949 * Create a symbolic link.
950 */
yfs_fs_symlink(struct afs_operation * op)951 void yfs_fs_symlink(struct afs_operation *op)
952 {
953 const struct qstr *name = &op->dentry->d_name;
954 struct afs_vnode_param *dvp = &op->file[0];
955 struct afs_call *call;
956 size_t contents_sz;
957 mode_t mode = 0777;
958 __be32 *bp;
959
960 _enter("");
961
962 contents_sz = strlen(op->create.symlink);
963 call = afs_alloc_flat_call(op->net, &yfs_RXYFSSymlink,
964 sizeof(__be32) +
965 sizeof(struct yfs_xdr_RPCFlags) +
966 sizeof(struct yfs_xdr_YFSFid) +
967 xdr_strlen(name->len) +
968 xdr_strlen(contents_sz) +
969 sizeof(struct yfs_xdr_YFSStoreStatus),
970 sizeof(struct yfs_xdr_YFSFid) +
971 sizeof(struct yfs_xdr_YFSFetchStatus) +
972 sizeof(struct yfs_xdr_YFSFetchStatus) +
973 sizeof(struct yfs_xdr_YFSVolSync));
974 if (!call)
975 return afs_op_nomem(op);
976
977 /* marshall the parameters */
978 bp = call->request;
979 bp = xdr_encode_u32(bp, YFSSYMLINK);
980 bp = xdr_encode_u32(bp, 0); /* RPC flags */
981 bp = xdr_encode_YFSFid(bp, &dvp->fid);
982 bp = xdr_encode_name(bp, name);
983 bp = xdr_encode_string(bp, op->create.symlink, contents_sz);
984 bp = xdr_encode_YFSStoreStatus(bp, &mode, &op->mtime);
985 yfs_check_req(call, bp);
986
987 call->fid = dvp->fid;
988 trace_afs_make_fs_call1(call, &dvp->fid, name);
989 afs_make_op_call(op, call, GFP_NOFS);
990 }
991
992 /*
993 * Deliver reply data to a YFS.Rename operation.
994 */
yfs_deliver_fs_rename(struct afs_call * call)995 static int yfs_deliver_fs_rename(struct afs_call *call)
996 {
997 struct afs_operation *op = call->op;
998 struct afs_vnode_param *orig_dvp = &op->file[0];
999 struct afs_vnode_param *new_dvp = &op->file[1];
1000 const __be32 *bp;
1001 int ret;
1002
1003 _enter("{%u}", call->unmarshall);
1004
1005 ret = afs_transfer_reply(call);
1006 if (ret < 0)
1007 return ret;
1008
1009 bp = call->buffer;
1010 /* If the two dirs are the same, we have two copies of the same status
1011 * report, so we just decode it twice.
1012 */
1013 xdr_decode_YFSFetchStatus(&bp, call, &orig_dvp->scb);
1014 xdr_decode_YFSFetchStatus(&bp, call, &new_dvp->scb);
1015 xdr_decode_YFSVolSync(&bp, &op->volsync);
1016 _leave(" = 0 [done]");
1017 return 0;
1018 }
1019
1020 /*
1021 * YFS.Rename operation type
1022 */
1023 static const struct afs_call_type yfs_RXYFSRename = {
1024 .name = "FS.Rename",
1025 .op = yfs_FS_Rename,
1026 .deliver = yfs_deliver_fs_rename,
1027 .destructor = afs_flat_call_destructor,
1028 };
1029
1030 /*
1031 * Rename a file or directory.
1032 */
yfs_fs_rename(struct afs_operation * op)1033 void yfs_fs_rename(struct afs_operation *op)
1034 {
1035 struct afs_vnode_param *orig_dvp = &op->file[0];
1036 struct afs_vnode_param *new_dvp = &op->file[1];
1037 const struct qstr *orig_name = &op->dentry->d_name;
1038 const struct qstr *new_name = &op->dentry_2->d_name;
1039 struct afs_call *call;
1040 __be32 *bp;
1041
1042 _enter("");
1043
1044 call = afs_alloc_flat_call(op->net, &yfs_RXYFSRename,
1045 sizeof(__be32) +
1046 sizeof(struct yfs_xdr_RPCFlags) +
1047 sizeof(struct yfs_xdr_YFSFid) +
1048 xdr_strlen(orig_name->len) +
1049 sizeof(struct yfs_xdr_YFSFid) +
1050 xdr_strlen(new_name->len),
1051 sizeof(struct yfs_xdr_YFSFetchStatus) +
1052 sizeof(struct yfs_xdr_YFSFetchStatus) +
1053 sizeof(struct yfs_xdr_YFSVolSync));
1054 if (!call)
1055 return afs_op_nomem(op);
1056
1057 /* marshall the parameters */
1058 bp = call->request;
1059 bp = xdr_encode_u32(bp, YFSRENAME);
1060 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1061 bp = xdr_encode_YFSFid(bp, &orig_dvp->fid);
1062 bp = xdr_encode_name(bp, orig_name);
1063 bp = xdr_encode_YFSFid(bp, &new_dvp->fid);
1064 bp = xdr_encode_name(bp, new_name);
1065 yfs_check_req(call, bp);
1066
1067 call->fid = orig_dvp->fid;
1068 trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
1069 afs_make_op_call(op, call, GFP_NOFS);
1070 }
1071
1072 /*
1073 * YFS.StoreData64 operation type.
1074 */
1075 static const struct afs_call_type yfs_RXYFSStoreData64 = {
1076 .name = "YFS.StoreData64",
1077 .op = yfs_FS_StoreData64,
1078 .deliver = yfs_deliver_status_and_volsync,
1079 .destructor = afs_flat_call_destructor,
1080 };
1081
1082 /*
1083 * Store a set of pages to a large file.
1084 */
yfs_fs_store_data(struct afs_operation * op)1085 void yfs_fs_store_data(struct afs_operation *op)
1086 {
1087 struct afs_vnode_param *vp = &op->file[0];
1088 struct afs_call *call;
1089 __be32 *bp;
1090
1091 _enter(",%x,{%llx:%llu},,",
1092 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1093
1094 _debug("size %llx, at %llx, i_size %llx",
1095 (unsigned long long)op->store.size,
1096 (unsigned long long)op->store.pos,
1097 (unsigned long long)op->store.i_size);
1098
1099 call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64,
1100 sizeof(__be32) +
1101 sizeof(__be32) +
1102 sizeof(struct yfs_xdr_YFSFid) +
1103 sizeof(struct yfs_xdr_YFSStoreStatus) +
1104 sizeof(struct yfs_xdr_u64) * 3,
1105 sizeof(struct yfs_xdr_YFSFetchStatus) +
1106 sizeof(struct yfs_xdr_YFSVolSync));
1107 if (!call)
1108 return afs_op_nomem(op);
1109
1110 call->write_iter = op->store.write_iter;
1111
1112 /* marshall the parameters */
1113 bp = call->request;
1114 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1115 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1116 bp = xdr_encode_YFSFid(bp, &vp->fid);
1117 bp = xdr_encode_YFSStoreStatus(bp, NULL, &op->mtime);
1118 bp = xdr_encode_u64(bp, op->store.pos);
1119 bp = xdr_encode_u64(bp, op->store.size);
1120 bp = xdr_encode_u64(bp, op->store.i_size);
1121 yfs_check_req(call, bp);
1122
1123 call->fid = vp->fid;
1124 trace_afs_make_fs_call(call, &vp->fid);
1125 afs_make_op_call(op, call, GFP_NOFS);
1126 }
1127
1128 /*
1129 * YFS.StoreStatus operation type
1130 */
1131 static const struct afs_call_type yfs_RXYFSStoreStatus = {
1132 .name = "YFS.StoreStatus",
1133 .op = yfs_FS_StoreStatus,
1134 .deliver = yfs_deliver_status_and_volsync,
1135 .destructor = afs_flat_call_destructor,
1136 };
1137
1138 static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
1139 .name = "YFS.StoreData64",
1140 .op = yfs_FS_StoreData64,
1141 .deliver = yfs_deliver_status_and_volsync,
1142 .destructor = afs_flat_call_destructor,
1143 };
1144
1145 /*
1146 * Set the attributes on a file, using YFS.StoreData64 rather than
1147 * YFS.StoreStatus so as to alter the file size also.
1148 */
yfs_fs_setattr_size(struct afs_operation * op)1149 static void yfs_fs_setattr_size(struct afs_operation *op)
1150 {
1151 struct afs_vnode_param *vp = &op->file[0];
1152 struct afs_call *call;
1153 struct iattr *attr = op->setattr.attr;
1154 __be32 *bp;
1155
1156 _enter(",%x,{%llx:%llu},,",
1157 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1158
1159 call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64_as_Status,
1160 sizeof(__be32) * 2 +
1161 sizeof(struct yfs_xdr_YFSFid) +
1162 sizeof(struct yfs_xdr_YFSStoreStatus) +
1163 sizeof(struct yfs_xdr_u64) * 3,
1164 sizeof(struct yfs_xdr_YFSFetchStatus) +
1165 sizeof(struct yfs_xdr_YFSVolSync));
1166 if (!call)
1167 return afs_op_nomem(op);
1168
1169 /* marshall the parameters */
1170 bp = call->request;
1171 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1172 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1173 bp = xdr_encode_YFSFid(bp, &vp->fid);
1174 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1175 bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
1176 bp = xdr_encode_u64(bp, 0); /* size of write */
1177 bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
1178 yfs_check_req(call, bp);
1179
1180 call->fid = vp->fid;
1181 trace_afs_make_fs_call(call, &vp->fid);
1182 afs_make_op_call(op, call, GFP_NOFS);
1183 }
1184
1185 /*
1186 * Set the attributes on a file, using YFS.StoreData64 if there's a change in
1187 * file size, and YFS.StoreStatus otherwise.
1188 */
yfs_fs_setattr(struct afs_operation * op)1189 void yfs_fs_setattr(struct afs_operation *op)
1190 {
1191 struct afs_vnode_param *vp = &op->file[0];
1192 struct afs_call *call;
1193 struct iattr *attr = op->setattr.attr;
1194 __be32 *bp;
1195
1196 if (attr->ia_valid & ATTR_SIZE)
1197 return yfs_fs_setattr_size(op);
1198
1199 _enter(",%x,{%llx:%llu},,",
1200 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1201
1202 call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreStatus,
1203 sizeof(__be32) * 2 +
1204 sizeof(struct yfs_xdr_YFSFid) +
1205 sizeof(struct yfs_xdr_YFSStoreStatus),
1206 sizeof(struct yfs_xdr_YFSFetchStatus) +
1207 sizeof(struct yfs_xdr_YFSVolSync));
1208 if (!call)
1209 return afs_op_nomem(op);
1210
1211 /* marshall the parameters */
1212 bp = call->request;
1213 bp = xdr_encode_u32(bp, YFSSTORESTATUS);
1214 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1215 bp = xdr_encode_YFSFid(bp, &vp->fid);
1216 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1217 yfs_check_req(call, bp);
1218
1219 call->fid = vp->fid;
1220 trace_afs_make_fs_call(call, &vp->fid);
1221 afs_make_op_call(op, call, GFP_NOFS);
1222 }
1223
1224 /*
1225 * Deliver reply data to a YFS.GetVolumeStatus operation.
1226 */
yfs_deliver_fs_get_volume_status(struct afs_call * call)1227 static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
1228 {
1229 struct afs_operation *op = call->op;
1230 const __be32 *bp;
1231 char *p;
1232 u32 size;
1233 int ret;
1234
1235 _enter("{%u}", call->unmarshall);
1236
1237 switch (call->unmarshall) {
1238 case 0:
1239 call->unmarshall++;
1240 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
1241 fallthrough;
1242
1243 /* extract the returned status record */
1244 case 1:
1245 _debug("extract status");
1246 ret = afs_extract_data(call, true);
1247 if (ret < 0)
1248 return ret;
1249
1250 bp = call->buffer;
1251 xdr_decode_YFSFetchVolumeStatus(&bp, &op->volstatus.vs);
1252 call->unmarshall++;
1253 afs_extract_to_tmp(call);
1254 fallthrough;
1255
1256 /* extract the volume name length */
1257 case 2:
1258 ret = afs_extract_data(call, true);
1259 if (ret < 0)
1260 return ret;
1261
1262 call->count = ntohl(call->tmp);
1263 _debug("volname length: %u", call->count);
1264 if (call->count >= AFSNAMEMAX)
1265 return afs_protocol_error(call, afs_eproto_volname_len);
1266 size = (call->count + 3) & ~3; /* It's padded */
1267 afs_extract_to_buf(call, size);
1268 call->unmarshall++;
1269 fallthrough;
1270
1271 /* extract the volume name */
1272 case 3:
1273 _debug("extract volname");
1274 ret = afs_extract_data(call, true);
1275 if (ret < 0)
1276 return ret;
1277
1278 p = call->buffer;
1279 p[call->count] = 0;
1280 _debug("volname '%s'", p);
1281 afs_extract_to_tmp(call);
1282 call->unmarshall++;
1283 fallthrough;
1284
1285 /* extract the offline message length */
1286 case 4:
1287 ret = afs_extract_data(call, true);
1288 if (ret < 0)
1289 return ret;
1290
1291 call->count = ntohl(call->tmp);
1292 _debug("offline msg length: %u", call->count);
1293 if (call->count >= AFSNAMEMAX)
1294 return afs_protocol_error(call, afs_eproto_offline_msg_len);
1295 size = (call->count + 3) & ~3; /* It's padded */
1296 afs_extract_to_buf(call, size);
1297 call->unmarshall++;
1298 fallthrough;
1299
1300 /* extract the offline message */
1301 case 5:
1302 _debug("extract offline");
1303 ret = afs_extract_data(call, true);
1304 if (ret < 0)
1305 return ret;
1306
1307 p = call->buffer;
1308 p[call->count] = 0;
1309 _debug("offline '%s'", p);
1310
1311 afs_extract_to_tmp(call);
1312 call->unmarshall++;
1313 fallthrough;
1314
1315 /* extract the message of the day length */
1316 case 6:
1317 ret = afs_extract_data(call, true);
1318 if (ret < 0)
1319 return ret;
1320
1321 call->count = ntohl(call->tmp);
1322 _debug("motd length: %u", call->count);
1323 if (call->count >= AFSNAMEMAX)
1324 return afs_protocol_error(call, afs_eproto_motd_len);
1325 size = (call->count + 3) & ~3; /* It's padded */
1326 afs_extract_to_buf(call, size);
1327 call->unmarshall++;
1328 fallthrough;
1329
1330 /* extract the message of the day */
1331 case 7:
1332 _debug("extract motd");
1333 ret = afs_extract_data(call, false);
1334 if (ret < 0)
1335 return ret;
1336
1337 p = call->buffer;
1338 p[call->count] = 0;
1339 _debug("motd '%s'", p);
1340
1341 call->unmarshall++;
1342 fallthrough;
1343
1344 case 8:
1345 break;
1346 }
1347
1348 _leave(" = 0 [done]");
1349 return 0;
1350 }
1351
1352 /*
1353 * YFS.GetVolumeStatus operation type
1354 */
1355 static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
1356 .name = "YFS.GetVolumeStatus",
1357 .op = yfs_FS_GetVolumeStatus,
1358 .deliver = yfs_deliver_fs_get_volume_status,
1359 .destructor = afs_flat_call_destructor,
1360 };
1361
1362 /*
1363 * fetch the status of a volume
1364 */
yfs_fs_get_volume_status(struct afs_operation * op)1365 void yfs_fs_get_volume_status(struct afs_operation *op)
1366 {
1367 struct afs_vnode_param *vp = &op->file[0];
1368 struct afs_call *call;
1369 __be32 *bp;
1370
1371 _enter("");
1372
1373 call = afs_alloc_flat_call(op->net, &yfs_RXYFSGetVolumeStatus,
1374 sizeof(__be32) * 2 +
1375 sizeof(struct yfs_xdr_u64),
1376 max_t(size_t,
1377 sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
1378 sizeof(__be32),
1379 AFSOPAQUEMAX + 1));
1380 if (!call)
1381 return afs_op_nomem(op);
1382
1383 /* marshall the parameters */
1384 bp = call->request;
1385 bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
1386 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1387 bp = xdr_encode_u64(bp, vp->fid.vid);
1388 yfs_check_req(call, bp);
1389
1390 call->fid = vp->fid;
1391 trace_afs_make_fs_call(call, &vp->fid);
1392 afs_make_op_call(op, call, GFP_NOFS);
1393 }
1394
1395 /*
1396 * YFS.SetLock operation type
1397 */
1398 static const struct afs_call_type yfs_RXYFSSetLock = {
1399 .name = "YFS.SetLock",
1400 .op = yfs_FS_SetLock,
1401 .deliver = yfs_deliver_status_and_volsync,
1402 .done = afs_lock_op_done,
1403 .destructor = afs_flat_call_destructor,
1404 };
1405
1406 /*
1407 * YFS.ExtendLock operation type
1408 */
1409 static const struct afs_call_type yfs_RXYFSExtendLock = {
1410 .name = "YFS.ExtendLock",
1411 .op = yfs_FS_ExtendLock,
1412 .deliver = yfs_deliver_status_and_volsync,
1413 .done = afs_lock_op_done,
1414 .destructor = afs_flat_call_destructor,
1415 };
1416
1417 /*
1418 * YFS.ReleaseLock operation type
1419 */
1420 static const struct afs_call_type yfs_RXYFSReleaseLock = {
1421 .name = "YFS.ReleaseLock",
1422 .op = yfs_FS_ReleaseLock,
1423 .deliver = yfs_deliver_status_and_volsync,
1424 .destructor = afs_flat_call_destructor,
1425 };
1426
1427 /*
1428 * Set a lock on a file
1429 */
yfs_fs_set_lock(struct afs_operation * op)1430 void yfs_fs_set_lock(struct afs_operation *op)
1431 {
1432 struct afs_vnode_param *vp = &op->file[0];
1433 struct afs_call *call;
1434 __be32 *bp;
1435
1436 _enter("");
1437
1438 call = afs_alloc_flat_call(op->net, &yfs_RXYFSSetLock,
1439 sizeof(__be32) * 2 +
1440 sizeof(struct yfs_xdr_YFSFid) +
1441 sizeof(__be32),
1442 sizeof(struct yfs_xdr_YFSFetchStatus) +
1443 sizeof(struct yfs_xdr_YFSVolSync));
1444 if (!call)
1445 return afs_op_nomem(op);
1446
1447 /* marshall the parameters */
1448 bp = call->request;
1449 bp = xdr_encode_u32(bp, YFSSETLOCK);
1450 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1451 bp = xdr_encode_YFSFid(bp, &vp->fid);
1452 bp = xdr_encode_u32(bp, op->lock.type);
1453 yfs_check_req(call, bp);
1454
1455 call->fid = vp->fid;
1456 trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
1457 afs_make_op_call(op, call, GFP_NOFS);
1458 }
1459
1460 /*
1461 * extend a lock on a file
1462 */
yfs_fs_extend_lock(struct afs_operation * op)1463 void yfs_fs_extend_lock(struct afs_operation *op)
1464 {
1465 struct afs_vnode_param *vp = &op->file[0];
1466 struct afs_call *call;
1467 __be32 *bp;
1468
1469 _enter("");
1470
1471 call = afs_alloc_flat_call(op->net, &yfs_RXYFSExtendLock,
1472 sizeof(__be32) * 2 +
1473 sizeof(struct yfs_xdr_YFSFid),
1474 sizeof(struct yfs_xdr_YFSFetchStatus) +
1475 sizeof(struct yfs_xdr_YFSVolSync));
1476 if (!call)
1477 return afs_op_nomem(op);
1478
1479 /* marshall the parameters */
1480 bp = call->request;
1481 bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
1482 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1483 bp = xdr_encode_YFSFid(bp, &vp->fid);
1484 yfs_check_req(call, bp);
1485
1486 call->fid = vp->fid;
1487 trace_afs_make_fs_call(call, &vp->fid);
1488 afs_make_op_call(op, call, GFP_NOFS);
1489 }
1490
1491 /*
1492 * release a lock on a file
1493 */
yfs_fs_release_lock(struct afs_operation * op)1494 void yfs_fs_release_lock(struct afs_operation *op)
1495 {
1496 struct afs_vnode_param *vp = &op->file[0];
1497 struct afs_call *call;
1498 __be32 *bp;
1499
1500 _enter("");
1501
1502 call = afs_alloc_flat_call(op->net, &yfs_RXYFSReleaseLock,
1503 sizeof(__be32) * 2 +
1504 sizeof(struct yfs_xdr_YFSFid),
1505 sizeof(struct yfs_xdr_YFSFetchStatus) +
1506 sizeof(struct yfs_xdr_YFSVolSync));
1507 if (!call)
1508 return afs_op_nomem(op);
1509
1510 /* marshall the parameters */
1511 bp = call->request;
1512 bp = xdr_encode_u32(bp, YFSRELEASELOCK);
1513 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1514 bp = xdr_encode_YFSFid(bp, &vp->fid);
1515 yfs_check_req(call, bp);
1516
1517 call->fid = vp->fid;
1518 trace_afs_make_fs_call(call, &vp->fid);
1519 afs_make_op_call(op, call, GFP_NOFS);
1520 }
1521
1522 /*
1523 * Deliver a reply to YFS.FetchStatus
1524 */
yfs_deliver_fs_fetch_status(struct afs_call * call)1525 static int yfs_deliver_fs_fetch_status(struct afs_call *call)
1526 {
1527 struct afs_operation *op = call->op;
1528 struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
1529 const __be32 *bp;
1530 int ret;
1531
1532 ret = afs_transfer_reply(call);
1533 if (ret < 0)
1534 return ret;
1535
1536 /* unmarshall the reply once we've received all of it */
1537 bp = call->buffer;
1538 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
1539 xdr_decode_YFSCallBack(&bp, call, &vp->scb);
1540 xdr_decode_YFSVolSync(&bp, &op->volsync);
1541
1542 _leave(" = 0 [done]");
1543 return 0;
1544 }
1545
1546 /*
1547 * YFS.FetchStatus operation type
1548 */
1549 static const struct afs_call_type yfs_RXYFSFetchStatus = {
1550 .name = "YFS.FetchStatus",
1551 .op = yfs_FS_FetchStatus,
1552 .deliver = yfs_deliver_fs_fetch_status,
1553 .destructor = afs_flat_call_destructor,
1554 };
1555
1556 /*
1557 * Fetch the status information for a fid without needing a vnode handle.
1558 */
yfs_fs_fetch_status(struct afs_operation * op)1559 void yfs_fs_fetch_status(struct afs_operation *op)
1560 {
1561 struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
1562 struct afs_call *call;
1563 __be32 *bp;
1564
1565 _enter(",%x,{%llx:%llu},,",
1566 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1567
1568 call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchStatus,
1569 sizeof(__be32) * 2 +
1570 sizeof(struct yfs_xdr_YFSFid),
1571 sizeof(struct yfs_xdr_YFSFetchStatus) +
1572 sizeof(struct yfs_xdr_YFSCallBack) +
1573 sizeof(struct yfs_xdr_YFSVolSync));
1574 if (!call)
1575 return afs_op_nomem(op);
1576
1577 /* marshall the parameters */
1578 bp = call->request;
1579 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
1580 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1581 bp = xdr_encode_YFSFid(bp, &vp->fid);
1582 yfs_check_req(call, bp);
1583
1584 call->fid = vp->fid;
1585 trace_afs_make_fs_call(call, &vp->fid);
1586 afs_make_op_call(op, call, GFP_NOFS);
1587 }
1588
1589 /*
1590 * Deliver reply data to an YFS.InlineBulkStatus call
1591 */
yfs_deliver_fs_inline_bulk_status(struct afs_call * call)1592 static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
1593 {
1594 struct afs_operation *op = call->op;
1595 struct afs_status_cb *scb;
1596 const __be32 *bp;
1597 u32 tmp;
1598 int ret;
1599
1600 _enter("{%u}", call->unmarshall);
1601
1602 switch (call->unmarshall) {
1603 case 0:
1604 afs_extract_to_tmp(call);
1605 call->unmarshall++;
1606 fallthrough;
1607
1608 /* Extract the file status count and array in two steps */
1609 case 1:
1610 _debug("extract status count");
1611 ret = afs_extract_data(call, true);
1612 if (ret < 0)
1613 return ret;
1614
1615 tmp = ntohl(call->tmp);
1616 _debug("status count: %u/%u", tmp, op->nr_files);
1617 if (tmp != op->nr_files)
1618 return afs_protocol_error(call, afs_eproto_ibulkst_count);
1619
1620 call->count = 0;
1621 call->unmarshall++;
1622 more_counts:
1623 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
1624 fallthrough;
1625
1626 case 2:
1627 _debug("extract status array %u", call->count);
1628 ret = afs_extract_data(call, true);
1629 if (ret < 0)
1630 return ret;
1631
1632 switch (call->count) {
1633 case 0:
1634 scb = &op->file[0].scb;
1635 break;
1636 case 1:
1637 scb = &op->file[1].scb;
1638 break;
1639 default:
1640 scb = &op->more_files[call->count - 2].scb;
1641 break;
1642 }
1643
1644 bp = call->buffer;
1645 xdr_decode_YFSFetchStatus(&bp, call, scb);
1646
1647 call->count++;
1648 if (call->count < op->nr_files)
1649 goto more_counts;
1650
1651 call->count = 0;
1652 call->unmarshall++;
1653 afs_extract_to_tmp(call);
1654 fallthrough;
1655
1656 /* Extract the callback count and array in two steps */
1657 case 3:
1658 _debug("extract CB count");
1659 ret = afs_extract_data(call, true);
1660 if (ret < 0)
1661 return ret;
1662
1663 tmp = ntohl(call->tmp);
1664 _debug("CB count: %u", tmp);
1665 if (tmp != op->nr_files)
1666 return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
1667 call->count = 0;
1668 call->unmarshall++;
1669 more_cbs:
1670 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
1671 fallthrough;
1672
1673 case 4:
1674 _debug("extract CB array");
1675 ret = afs_extract_data(call, true);
1676 if (ret < 0)
1677 return ret;
1678
1679 _debug("unmarshall CB array");
1680 switch (call->count) {
1681 case 0:
1682 scb = &op->file[0].scb;
1683 break;
1684 case 1:
1685 scb = &op->file[1].scb;
1686 break;
1687 default:
1688 scb = &op->more_files[call->count - 2].scb;
1689 break;
1690 }
1691
1692 bp = call->buffer;
1693 xdr_decode_YFSCallBack(&bp, call, scb);
1694 call->count++;
1695 if (call->count < op->nr_files)
1696 goto more_cbs;
1697
1698 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
1699 call->unmarshall++;
1700 fallthrough;
1701
1702 case 5:
1703 ret = afs_extract_data(call, false);
1704 if (ret < 0)
1705 return ret;
1706
1707 bp = call->buffer;
1708 xdr_decode_YFSVolSync(&bp, &op->volsync);
1709
1710 call->unmarshall++;
1711 fallthrough;
1712
1713 case 6:
1714 break;
1715 }
1716
1717 _leave(" = 0 [done]");
1718 return 0;
1719 }
1720
1721 /*
1722 * FS.InlineBulkStatus operation type
1723 */
1724 static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
1725 .name = "YFS.InlineBulkStatus",
1726 .op = yfs_FS_InlineBulkStatus,
1727 .deliver = yfs_deliver_fs_inline_bulk_status,
1728 .destructor = afs_flat_call_destructor,
1729 };
1730
1731 /*
1732 * Fetch the status information for up to 1024 files
1733 */
yfs_fs_inline_bulk_status(struct afs_operation * op)1734 void yfs_fs_inline_bulk_status(struct afs_operation *op)
1735 {
1736 struct afs_vnode_param *dvp = &op->file[0];
1737 struct afs_vnode_param *vp = &op->file[1];
1738 struct afs_call *call;
1739 __be32 *bp;
1740 int i;
1741
1742 _enter(",%x,{%llx:%llu},%u",
1743 key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
1744
1745 call = afs_alloc_flat_call(op->net, &yfs_RXYFSInlineBulkStatus,
1746 sizeof(__be32) +
1747 sizeof(__be32) +
1748 sizeof(__be32) +
1749 sizeof(struct yfs_xdr_YFSFid) * op->nr_files,
1750 sizeof(struct yfs_xdr_YFSFetchStatus));
1751 if (!call)
1752 return afs_op_nomem(op);
1753
1754 /* marshall the parameters */
1755 bp = call->request;
1756 bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
1757 bp = xdr_encode_u32(bp, 0); /* RPCFlags */
1758 bp = xdr_encode_u32(bp, op->nr_files);
1759 bp = xdr_encode_YFSFid(bp, &dvp->fid);
1760 bp = xdr_encode_YFSFid(bp, &vp->fid);
1761 for (i = 0; i < op->nr_files - 2; i++)
1762 bp = xdr_encode_YFSFid(bp, &op->more_files[i].fid);
1763 yfs_check_req(call, bp);
1764
1765 call->fid = vp->fid;
1766 trace_afs_make_fs_call(call, &vp->fid);
1767 afs_make_op_call(op, call, GFP_NOFS);
1768 }
1769
1770 /*
1771 * Deliver reply data to an YFS.FetchOpaqueACL.
1772 */
yfs_deliver_fs_fetch_opaque_acl(struct afs_call * call)1773 static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
1774 {
1775 struct afs_operation *op = call->op;
1776 struct afs_vnode_param *vp = &op->file[0];
1777 struct yfs_acl *yacl = op->yacl;
1778 struct afs_acl *acl;
1779 const __be32 *bp;
1780 unsigned int size;
1781 int ret;
1782
1783 _enter("{%u}", call->unmarshall);
1784
1785 switch (call->unmarshall) {
1786 case 0:
1787 afs_extract_to_tmp(call);
1788 call->unmarshall++;
1789 fallthrough;
1790
1791 /* Extract the file ACL length */
1792 case 1:
1793 ret = afs_extract_data(call, true);
1794 if (ret < 0)
1795 return ret;
1796
1797 size = call->count2 = ntohl(call->tmp);
1798 size = round_up(size, 4);
1799
1800 if (yacl->flags & YFS_ACL_WANT_ACL) {
1801 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
1802 if (!acl)
1803 return -ENOMEM;
1804 yacl->acl = acl;
1805 acl->size = call->count2;
1806 afs_extract_begin(call, acl->data, size);
1807 } else {
1808 afs_extract_discard(call, size);
1809 }
1810 call->unmarshall++;
1811 fallthrough;
1812
1813 /* Extract the file ACL */
1814 case 2:
1815 ret = afs_extract_data(call, true);
1816 if (ret < 0)
1817 return ret;
1818
1819 afs_extract_to_tmp(call);
1820 call->unmarshall++;
1821 fallthrough;
1822
1823 /* Extract the volume ACL length */
1824 case 3:
1825 ret = afs_extract_data(call, true);
1826 if (ret < 0)
1827 return ret;
1828
1829 size = call->count2 = ntohl(call->tmp);
1830 size = round_up(size, 4);
1831
1832 if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
1833 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
1834 if (!acl)
1835 return -ENOMEM;
1836 yacl->vol_acl = acl;
1837 acl->size = call->count2;
1838 afs_extract_begin(call, acl->data, size);
1839 } else {
1840 afs_extract_discard(call, size);
1841 }
1842 call->unmarshall++;
1843 fallthrough;
1844
1845 /* Extract the volume ACL */
1846 case 4:
1847 ret = afs_extract_data(call, true);
1848 if (ret < 0)
1849 return ret;
1850
1851 afs_extract_to_buf(call,
1852 sizeof(__be32) * 2 +
1853 sizeof(struct yfs_xdr_YFSFetchStatus) +
1854 sizeof(struct yfs_xdr_YFSVolSync));
1855 call->unmarshall++;
1856 fallthrough;
1857
1858 /* extract the metadata */
1859 case 5:
1860 ret = afs_extract_data(call, false);
1861 if (ret < 0)
1862 return ret;
1863
1864 bp = call->buffer;
1865 yacl->inherit_flag = ntohl(*bp++);
1866 yacl->num_cleaned = ntohl(*bp++);
1867 xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
1868 xdr_decode_YFSVolSync(&bp, &op->volsync);
1869
1870 call->unmarshall++;
1871 fallthrough;
1872
1873 case 6:
1874 break;
1875 }
1876
1877 _leave(" = 0 [done]");
1878 return 0;
1879 }
1880
yfs_free_opaque_acl(struct yfs_acl * yacl)1881 void yfs_free_opaque_acl(struct yfs_acl *yacl)
1882 {
1883 if (yacl) {
1884 kfree(yacl->acl);
1885 kfree(yacl->vol_acl);
1886 kfree(yacl);
1887 }
1888 }
1889
1890 /*
1891 * YFS.FetchOpaqueACL operation type
1892 */
1893 static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
1894 .name = "YFS.FetchOpaqueACL",
1895 .op = yfs_FS_FetchOpaqueACL,
1896 .deliver = yfs_deliver_fs_fetch_opaque_acl,
1897 .destructor = afs_flat_call_destructor,
1898 };
1899
1900 /*
1901 * Fetch the YFS advanced ACLs for a file.
1902 */
yfs_fs_fetch_opaque_acl(struct afs_operation * op)1903 void yfs_fs_fetch_opaque_acl(struct afs_operation *op)
1904 {
1905 struct afs_vnode_param *vp = &op->file[0];
1906 struct afs_call *call;
1907 __be32 *bp;
1908
1909 _enter(",%x,{%llx:%llu},,",
1910 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1911
1912 call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchOpaqueACL,
1913 sizeof(__be32) * 2 +
1914 sizeof(struct yfs_xdr_YFSFid),
1915 sizeof(__be32) * 2 +
1916 sizeof(struct yfs_xdr_YFSFetchStatus) +
1917 sizeof(struct yfs_xdr_YFSVolSync));
1918 if (!call)
1919 return afs_op_nomem(op);
1920
1921 /* marshall the parameters */
1922 bp = call->request;
1923 bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
1924 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1925 bp = xdr_encode_YFSFid(bp, &vp->fid);
1926 yfs_check_req(call, bp);
1927
1928 call->fid = vp->fid;
1929 trace_afs_make_fs_call(call, &vp->fid);
1930 afs_make_op_call(op, call, GFP_KERNEL);
1931 }
1932
1933 /*
1934 * YFS.StoreOpaqueACL2 operation type
1935 */
1936 static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
1937 .name = "YFS.StoreOpaqueACL2",
1938 .op = yfs_FS_StoreOpaqueACL2,
1939 .deliver = yfs_deliver_status_and_volsync,
1940 .destructor = afs_flat_call_destructor,
1941 };
1942
1943 /*
1944 * Fetch the YFS ACL for a file.
1945 */
yfs_fs_store_opaque_acl2(struct afs_operation * op)1946 void yfs_fs_store_opaque_acl2(struct afs_operation *op)
1947 {
1948 struct afs_vnode_param *vp = &op->file[0];
1949 struct afs_call *call;
1950 struct afs_acl *acl = op->acl;
1951 size_t size;
1952 __be32 *bp;
1953
1954 _enter(",%x,{%llx:%llu},,",
1955 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1956
1957 size = round_up(acl->size, 4);
1958 call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreOpaqueACL2,
1959 sizeof(__be32) * 2 +
1960 sizeof(struct yfs_xdr_YFSFid) +
1961 sizeof(__be32) + size,
1962 sizeof(struct yfs_xdr_YFSFetchStatus) +
1963 sizeof(struct yfs_xdr_YFSVolSync));
1964 if (!call)
1965 return afs_op_nomem(op);
1966
1967 /* marshall the parameters */
1968 bp = call->request;
1969 bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
1970 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1971 bp = xdr_encode_YFSFid(bp, &vp->fid);
1972 bp = xdr_encode_u32(bp, acl->size);
1973 memcpy(bp, acl->data, acl->size);
1974 if (acl->size != size)
1975 memset((void *)bp + acl->size, 0, size - acl->size);
1976 bp += size / sizeof(__be32);
1977 yfs_check_req(call, bp);
1978
1979 call->fid = vp->fid;
1980 trace_afs_make_fs_call(call, &vp->fid);
1981 afs_make_op_call(op, call, GFP_KERNEL);
1982 }
1983