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 | |
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: x->volume); |
25 | fid->vnode = xdr_to_u64(x: 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 | |
31 | static __be32 *xdr_encode_u32(__be32 *bp, u32 n) |
32 | { |
33 | *bp++ = htonl(n); |
34 | return bp; |
35 | } |
36 | |
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(x: n); |
42 | return bp + xdr_size(x); |
43 | } |
44 | |
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(x: fid->vid); |
50 | x->vnode.lo = u64_to_xdr(x: 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 | |
56 | static size_t xdr_strlen(unsigned int len) |
57 | { |
58 | return sizeof(__be32) + round_up(len, sizeof(__be32)); |
59 | } |
60 | |
61 | static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len) |
62 | { |
63 | bp = xdr_encode_u32(bp, n: 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 | |
75 | static __be32 *xdr_encode_name(__be32 *bp, const struct qstr *p) |
76 | { |
77 | return xdr_encode_string(bp, p: p->name, len: p->len); |
78 | } |
79 | |
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 | |
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(x: mtime); |
99 | x->owner = u64_to_xdr(x: 0); |
100 | x->group = u64_to_xdr(x: 0); |
101 | return bp + xdr_size(x); |
102 | } |
103 | |
104 | /* |
105 | * Convert a signed 100ns-resolution 64-bit time into a timespec. |
106 | */ |
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 | |
131 | static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr) |
132 | { |
133 | s64 t = xdr_to_u64(x: xdr); |
134 | |
135 | return yfs_time_to_linux(t); |
136 | } |
137 | |
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 | */ |
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 | */ |
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(x: xdr->author); |
202 | status->owner = xdr_to_u64(x: 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(x: xdr->group); |
207 | status->lock_count = ntohl(xdr->lock_count); |
208 | |
209 | status->mtime_client = xdr_to_time(xdr: xdr->mtime_client); |
210 | status->mtime_server = xdr_to_time(xdr: xdr->mtime_server); |
211 | status->size = xdr_to_u64(x: xdr->size); |
212 | status->data_version = xdr_to_u64(x: 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: *_bp); |
220 | afs_protocol_error(call, afs_eproto_bad_status); |
221 | goto advance; |
222 | } |
223 | |
224 | /* |
225 | * Decode a YFSCallBack block |
226 | */ |
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(kt: cb_expiry, NSEC_PER_SEC); |
237 | scb->have_cb = true; |
238 | *_bp += xdr_size(x); |
239 | } |
240 | |
241 | /* |
242 | * Decode a YFSVolSync block |
243 | */ |
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: x->vol_creation_date); |
252 | do_div(creation, 10 * 1000 * 1000); |
253 | volsync->creation = creation; |
254 | update = xdr_to_u64(x: 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 | */ |
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(t: &attr->ia_mtime); |
275 | } |
276 | |
277 | if (attr->ia_valid & ATTR_UID) { |
278 | mask |= AFS_SET_OWNER; |
279 | owner = from_kuid(to: &init_user_ns, uid: attr->ia_uid); |
280 | } |
281 | |
282 | if (attr->ia_valid & ATTR_GID) { |
283 | mask |= AFS_SET_GROUP; |
284 | group = from_kgid(to: &init_user_ns, gid: 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(x: mtime); |
295 | x->owner = u64_to_xdr(x: owner); |
296 | x->group = u64_to_xdr(x: group); |
297 | return bp + xdr_size(x); |
298 | } |
299 | |
300 | /* |
301 | * Decode a YFSFetchVolumeStatus block. |
302 | */ |
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: x->vid); |
310 | vs->parent_id = xdr_to_u64(x: 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: x->max_quota); |
319 | vs->blocks_in_use = xdr_to_u64(x: x->blocks_in_use); |
320 | vs->part_blocks_avail = xdr_to_u64(x: x->part_blocks_avail); |
321 | vs->part_max_blocks = xdr_to_u64(x: x->part_max_blocks); |
322 | vs->vol_copy_date = xdr_to_u64(x: x->vol_copy_date); |
323 | vs->vol_backup_date = xdr_to_u64(x: 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 | */ |
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: &bp, call, scb: &op->file[0].scb); |
343 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
344 | |
345 | _leave(" = 0 [done]" ); |
346 | return 0; |
347 | } |
348 | |
349 | /* |
350 | * Deliver reply data to an YFS.FetchData64. |
351 | */ |
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 | int ret; |
359 | |
360 | _enter("{%u,%zu, %zu/%llu}" , |
361 | call->unmarshall, call->iov_len, iov_iter_count(call->iter), |
362 | req->actual_len); |
363 | |
364 | switch (call->unmarshall) { |
365 | case 0: |
366 | req->actual_len = 0; |
367 | afs_extract_to_tmp64(call); |
368 | call->unmarshall++; |
369 | fallthrough; |
370 | |
371 | /* Extract the returned data length into ->actual_len. This |
372 | * may indicate more or less data than was requested will be |
373 | * returned. |
374 | */ |
375 | case 1: |
376 | _debug("extract data length" ); |
377 | ret = afs_extract_data(call, true); |
378 | if (ret < 0) |
379 | return ret; |
380 | |
381 | req->actual_len = be64_to_cpu(call->tmp64); |
382 | _debug("DATA length: %llu" , req->actual_len); |
383 | |
384 | if (req->actual_len == 0) |
385 | goto no_more_data; |
386 | |
387 | call->iter = req->iter; |
388 | call->iov_len = min(req->actual_len, req->len); |
389 | call->unmarshall++; |
390 | fallthrough; |
391 | |
392 | /* extract the returned data */ |
393 | case 2: |
394 | _debug("extract data %zu/%llu" , |
395 | iov_iter_count(call->iter), req->actual_len); |
396 | |
397 | ret = afs_extract_data(call, true); |
398 | if (ret < 0) |
399 | return ret; |
400 | |
401 | call->iter = &call->def_iter; |
402 | if (req->actual_len <= req->len) |
403 | goto no_more_data; |
404 | |
405 | /* Discard any excess data the server gave us */ |
406 | afs_extract_discard(call, size: req->actual_len - req->len); |
407 | call->unmarshall = 3; |
408 | fallthrough; |
409 | |
410 | case 3: |
411 | _debug("extract discard %zu/%llu" , |
412 | iov_iter_count(call->iter), req->actual_len - req->len); |
413 | |
414 | ret = afs_extract_data(call, true); |
415 | if (ret < 0) |
416 | return ret; |
417 | |
418 | no_more_data: |
419 | call->unmarshall = 4; |
420 | afs_extract_to_buf(call, |
421 | size: sizeof(struct yfs_xdr_YFSFetchStatus) + |
422 | sizeof(struct yfs_xdr_YFSCallBack) + |
423 | sizeof(struct yfs_xdr_YFSVolSync)); |
424 | fallthrough; |
425 | |
426 | /* extract the metadata */ |
427 | case 4: |
428 | ret = afs_extract_data(call, false); |
429 | if (ret < 0) |
430 | return ret; |
431 | |
432 | bp = call->buffer; |
433 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
434 | xdr_decode_YFSCallBack(bp: &bp, call, scb: &vp->scb); |
435 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
436 | |
437 | req->data_version = vp->scb.status.data_version; |
438 | req->file_size = vp->scb.status.size; |
439 | |
440 | call->unmarshall++; |
441 | fallthrough; |
442 | |
443 | case 5: |
444 | break; |
445 | } |
446 | |
447 | _leave(" = 0 [done]" ); |
448 | return 0; |
449 | } |
450 | |
451 | /* |
452 | * YFS.FetchData64 operation type |
453 | */ |
454 | static const struct afs_call_type yfs_RXYFSFetchData64 = { |
455 | .name = "YFS.FetchData64" , |
456 | .op = yfs_FS_FetchData64, |
457 | .deliver = yfs_deliver_fs_fetch_data64, |
458 | .destructor = afs_flat_call_destructor, |
459 | }; |
460 | |
461 | /* |
462 | * Fetch data from a file. |
463 | */ |
464 | void yfs_fs_fetch_data(struct afs_operation *op) |
465 | { |
466 | struct afs_vnode_param *vp = &op->file[0]; |
467 | struct afs_read *req = op->fetch.req; |
468 | struct afs_call *call; |
469 | __be32 *bp; |
470 | |
471 | _enter(",%x,{%llx:%llu},%llx,%llx" , |
472 | key_serial(op->key), vp->fid.vid, vp->fid.vnode, |
473 | req->pos, req->len); |
474 | |
475 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchData64, |
476 | sizeof(__be32) * 2 + |
477 | sizeof(struct yfs_xdr_YFSFid) + |
478 | sizeof(struct yfs_xdr_u64) * 2, |
479 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
480 | sizeof(struct yfs_xdr_YFSCallBack) + |
481 | sizeof(struct yfs_xdr_YFSVolSync)); |
482 | if (!call) |
483 | return afs_op_nomem(op); |
484 | |
485 | req->call_debug_id = call->debug_id; |
486 | |
487 | /* marshall the parameters */ |
488 | bp = call->request; |
489 | bp = xdr_encode_u32(bp, n: YFSFETCHDATA64); |
490 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
491 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
492 | bp = xdr_encode_u64(bp, n: req->pos); |
493 | bp = xdr_encode_u64(bp, n: req->len); |
494 | yfs_check_req(call, bp); |
495 | |
496 | call->fid = vp->fid; |
497 | trace_afs_make_fs_call(call, fid: &vp->fid); |
498 | afs_make_op_call(op, call, GFP_NOFS); |
499 | } |
500 | |
501 | /* |
502 | * Deliver reply data for YFS.CreateFile or YFS.MakeDir. |
503 | */ |
504 | static int yfs_deliver_fs_create_vnode(struct afs_call *call) |
505 | { |
506 | struct afs_operation *op = call->op; |
507 | struct afs_vnode_param *dvp = &op->file[0]; |
508 | struct afs_vnode_param *vp = &op->file[1]; |
509 | const __be32 *bp; |
510 | int ret; |
511 | |
512 | _enter("{%u}" , call->unmarshall); |
513 | |
514 | ret = afs_transfer_reply(call); |
515 | if (ret < 0) |
516 | return ret; |
517 | |
518 | /* unmarshall the reply once we've received all of it */ |
519 | bp = call->buffer; |
520 | xdr_decode_YFSFid(bp: &bp, fid: &op->file[1].fid); |
521 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
522 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
523 | xdr_decode_YFSCallBack(bp: &bp, call, scb: &vp->scb); |
524 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
525 | |
526 | _leave(" = 0 [done]" ); |
527 | return 0; |
528 | } |
529 | |
530 | /* |
531 | * FS.CreateFile and FS.MakeDir operation type |
532 | */ |
533 | static const struct afs_call_type afs_RXFSCreateFile = { |
534 | .name = "YFS.CreateFile" , |
535 | .op = yfs_FS_CreateFile, |
536 | .deliver = yfs_deliver_fs_create_vnode, |
537 | .destructor = afs_flat_call_destructor, |
538 | }; |
539 | |
540 | /* |
541 | * Create a file. |
542 | */ |
543 | void yfs_fs_create_file(struct afs_operation *op) |
544 | { |
545 | const struct qstr *name = &op->dentry->d_name; |
546 | struct afs_vnode_param *dvp = &op->file[0]; |
547 | struct afs_call *call; |
548 | size_t reqsz, rplsz; |
549 | __be32 *bp; |
550 | |
551 | _enter("" ); |
552 | |
553 | reqsz = (sizeof(__be32) + |
554 | sizeof(__be32) + |
555 | sizeof(struct yfs_xdr_YFSFid) + |
556 | xdr_strlen(len: name->len) + |
557 | sizeof(struct yfs_xdr_YFSStoreStatus) + |
558 | sizeof(__be32)); |
559 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + |
560 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
561 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
562 | sizeof(struct yfs_xdr_YFSCallBack) + |
563 | sizeof(struct yfs_xdr_YFSVolSync)); |
564 | |
565 | call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, reqsz, rplsz); |
566 | if (!call) |
567 | return afs_op_nomem(op); |
568 | |
569 | /* marshall the parameters */ |
570 | bp = call->request; |
571 | bp = xdr_encode_u32(bp, n: YFSCREATEFILE); |
572 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
573 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
574 | bp = xdr_encode_name(bp, p: name); |
575 | bp = xdr_encode_YFSStoreStatus(bp, mode: &op->create.mode, t: &op->mtime); |
576 | bp = xdr_encode_u32(bp, n: yfs_LockNone); /* ViceLockType */ |
577 | yfs_check_req(call, bp); |
578 | |
579 | call->fid = dvp->fid; |
580 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
581 | afs_make_op_call(op, call, GFP_NOFS); |
582 | } |
583 | |
584 | static const struct afs_call_type yfs_RXFSMakeDir = { |
585 | .name = "YFS.MakeDir" , |
586 | .op = yfs_FS_MakeDir, |
587 | .deliver = yfs_deliver_fs_create_vnode, |
588 | .destructor = afs_flat_call_destructor, |
589 | }; |
590 | |
591 | /* |
592 | * Make a directory. |
593 | */ |
594 | void yfs_fs_make_dir(struct afs_operation *op) |
595 | { |
596 | const struct qstr *name = &op->dentry->d_name; |
597 | struct afs_vnode_param *dvp = &op->file[0]; |
598 | struct afs_call *call; |
599 | size_t reqsz, rplsz; |
600 | __be32 *bp; |
601 | |
602 | _enter("" ); |
603 | |
604 | reqsz = (sizeof(__be32) + |
605 | sizeof(struct yfs_xdr_RPCFlags) + |
606 | sizeof(struct yfs_xdr_YFSFid) + |
607 | xdr_strlen(len: name->len) + |
608 | sizeof(struct yfs_xdr_YFSStoreStatus)); |
609 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + |
610 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
611 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
612 | sizeof(struct yfs_xdr_YFSCallBack) + |
613 | sizeof(struct yfs_xdr_YFSVolSync)); |
614 | |
615 | call = afs_alloc_flat_call(op->net, &yfs_RXFSMakeDir, reqsz, rplsz); |
616 | if (!call) |
617 | return afs_op_nomem(op); |
618 | |
619 | /* marshall the parameters */ |
620 | bp = call->request; |
621 | bp = xdr_encode_u32(bp, n: YFSMAKEDIR); |
622 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
623 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
624 | bp = xdr_encode_name(bp, p: name); |
625 | bp = xdr_encode_YFSStoreStatus(bp, mode: &op->create.mode, t: &op->mtime); |
626 | yfs_check_req(call, bp); |
627 | |
628 | call->fid = dvp->fid; |
629 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
630 | afs_make_op_call(op, call, GFP_NOFS); |
631 | } |
632 | |
633 | /* |
634 | * Deliver reply data to a YFS.RemoveFile2 operation. |
635 | */ |
636 | static int yfs_deliver_fs_remove_file2(struct afs_call *call) |
637 | { |
638 | struct afs_operation *op = call->op; |
639 | struct afs_vnode_param *dvp = &op->file[0]; |
640 | struct afs_vnode_param *vp = &op->file[1]; |
641 | struct afs_fid fid; |
642 | const __be32 *bp; |
643 | int ret; |
644 | |
645 | _enter("{%u}" , call->unmarshall); |
646 | |
647 | ret = afs_transfer_reply(call); |
648 | if (ret < 0) |
649 | return ret; |
650 | |
651 | bp = call->buffer; |
652 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
653 | xdr_decode_YFSFid(bp: &bp, fid: &fid); |
654 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
655 | /* Was deleted if vnode->status.abort_code == VNOVNODE. */ |
656 | |
657 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
658 | return 0; |
659 | } |
660 | |
661 | static void yfs_done_fs_remove_file2(struct afs_call *call) |
662 | { |
663 | if (call->error == -ECONNABORTED && |
664 | call->abort_code == RX_INVALID_OPERATION) { |
665 | set_bit(AFS_SERVER_FL_NO_RM2, addr: &call->server->flags); |
666 | call->op->flags |= AFS_OPERATION_DOWNGRADE; |
667 | } |
668 | } |
669 | |
670 | /* |
671 | * YFS.RemoveFile2 operation type. |
672 | */ |
673 | static const struct afs_call_type yfs_RXYFSRemoveFile2 = { |
674 | .name = "YFS.RemoveFile2" , |
675 | .op = yfs_FS_RemoveFile2, |
676 | .deliver = yfs_deliver_fs_remove_file2, |
677 | .done = yfs_done_fs_remove_file2, |
678 | .destructor = afs_flat_call_destructor, |
679 | }; |
680 | |
681 | /* |
682 | * Remove a file and retrieve new file status. |
683 | */ |
684 | void yfs_fs_remove_file2(struct afs_operation *op) |
685 | { |
686 | struct afs_vnode_param *dvp = &op->file[0]; |
687 | const struct qstr *name = &op->dentry->d_name; |
688 | struct afs_call *call; |
689 | __be32 *bp; |
690 | |
691 | _enter("" ); |
692 | |
693 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile2, |
694 | sizeof(__be32) + |
695 | sizeof(struct yfs_xdr_RPCFlags) + |
696 | sizeof(struct yfs_xdr_YFSFid) + |
697 | xdr_strlen(len: name->len), |
698 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
699 | sizeof(struct yfs_xdr_YFSFid) + |
700 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
701 | sizeof(struct yfs_xdr_YFSVolSync)); |
702 | if (!call) |
703 | return afs_op_nomem(op); |
704 | |
705 | /* marshall the parameters */ |
706 | bp = call->request; |
707 | bp = xdr_encode_u32(bp, n: YFSREMOVEFILE2); |
708 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
709 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
710 | bp = xdr_encode_name(bp, p: name); |
711 | yfs_check_req(call, bp); |
712 | |
713 | call->fid = dvp->fid; |
714 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
715 | afs_make_op_call(op, call, GFP_NOFS); |
716 | } |
717 | |
718 | /* |
719 | * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation. |
720 | */ |
721 | static int yfs_deliver_fs_remove(struct afs_call *call) |
722 | { |
723 | struct afs_operation *op = call->op; |
724 | struct afs_vnode_param *dvp = &op->file[0]; |
725 | const __be32 *bp; |
726 | int ret; |
727 | |
728 | _enter("{%u}" , call->unmarshall); |
729 | |
730 | ret = afs_transfer_reply(call); |
731 | if (ret < 0) |
732 | return ret; |
733 | |
734 | bp = call->buffer; |
735 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
736 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
737 | return 0; |
738 | } |
739 | |
740 | /* |
741 | * FS.RemoveDir and FS.RemoveFile operation types. |
742 | */ |
743 | static const struct afs_call_type yfs_RXYFSRemoveFile = { |
744 | .name = "YFS.RemoveFile" , |
745 | .op = yfs_FS_RemoveFile, |
746 | .deliver = yfs_deliver_fs_remove, |
747 | .destructor = afs_flat_call_destructor, |
748 | }; |
749 | |
750 | /* |
751 | * Remove a file. |
752 | */ |
753 | void yfs_fs_remove_file(struct afs_operation *op) |
754 | { |
755 | const struct qstr *name = &op->dentry->d_name; |
756 | struct afs_vnode_param *dvp = &op->file[0]; |
757 | struct afs_call *call; |
758 | __be32 *bp; |
759 | |
760 | _enter("" ); |
761 | |
762 | if (!test_bit(AFS_SERVER_FL_NO_RM2, &op->server->flags)) |
763 | return yfs_fs_remove_file2(op); |
764 | |
765 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile, |
766 | sizeof(__be32) + |
767 | sizeof(struct yfs_xdr_RPCFlags) + |
768 | sizeof(struct yfs_xdr_YFSFid) + |
769 | xdr_strlen(len: name->len), |
770 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
771 | sizeof(struct yfs_xdr_YFSVolSync)); |
772 | if (!call) |
773 | return afs_op_nomem(op); |
774 | |
775 | /* marshall the parameters */ |
776 | bp = call->request; |
777 | bp = xdr_encode_u32(bp, n: YFSREMOVEFILE); |
778 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
779 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
780 | bp = xdr_encode_name(bp, p: name); |
781 | yfs_check_req(call, bp); |
782 | |
783 | call->fid = dvp->fid; |
784 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
785 | afs_make_op_call(op, call, GFP_NOFS); |
786 | } |
787 | |
788 | static const struct afs_call_type yfs_RXYFSRemoveDir = { |
789 | .name = "YFS.RemoveDir" , |
790 | .op = yfs_FS_RemoveDir, |
791 | .deliver = yfs_deliver_fs_remove, |
792 | .destructor = afs_flat_call_destructor, |
793 | }; |
794 | |
795 | /* |
796 | * Remove a directory. |
797 | */ |
798 | void yfs_fs_remove_dir(struct afs_operation *op) |
799 | { |
800 | const struct qstr *name = &op->dentry->d_name; |
801 | struct afs_vnode_param *dvp = &op->file[0]; |
802 | struct afs_call *call; |
803 | __be32 *bp; |
804 | |
805 | _enter("" ); |
806 | |
807 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveDir, |
808 | sizeof(__be32) + |
809 | sizeof(struct yfs_xdr_RPCFlags) + |
810 | sizeof(struct yfs_xdr_YFSFid) + |
811 | xdr_strlen(len: name->len), |
812 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
813 | sizeof(struct yfs_xdr_YFSVolSync)); |
814 | if (!call) |
815 | return afs_op_nomem(op); |
816 | |
817 | /* marshall the parameters */ |
818 | bp = call->request; |
819 | bp = xdr_encode_u32(bp, n: YFSREMOVEDIR); |
820 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
821 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
822 | bp = xdr_encode_name(bp, p: name); |
823 | yfs_check_req(call, bp); |
824 | |
825 | call->fid = dvp->fid; |
826 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
827 | afs_make_op_call(op, call, GFP_NOFS); |
828 | } |
829 | |
830 | /* |
831 | * Deliver reply data to a YFS.Link operation. |
832 | */ |
833 | static int yfs_deliver_fs_link(struct afs_call *call) |
834 | { |
835 | struct afs_operation *op = call->op; |
836 | struct afs_vnode_param *dvp = &op->file[0]; |
837 | struct afs_vnode_param *vp = &op->file[1]; |
838 | const __be32 *bp; |
839 | int ret; |
840 | |
841 | _enter("{%u}" , call->unmarshall); |
842 | |
843 | ret = afs_transfer_reply(call); |
844 | if (ret < 0) |
845 | return ret; |
846 | |
847 | bp = call->buffer; |
848 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
849 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
850 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
851 | _leave(" = 0 [done]" ); |
852 | return 0; |
853 | } |
854 | |
855 | /* |
856 | * YFS.Link operation type. |
857 | */ |
858 | static const struct afs_call_type yfs_RXYFSLink = { |
859 | .name = "YFS.Link" , |
860 | .op = yfs_FS_Link, |
861 | .deliver = yfs_deliver_fs_link, |
862 | .destructor = afs_flat_call_destructor, |
863 | }; |
864 | |
865 | /* |
866 | * Make a hard link. |
867 | */ |
868 | void yfs_fs_link(struct afs_operation *op) |
869 | { |
870 | const struct qstr *name = &op->dentry->d_name; |
871 | struct afs_vnode_param *dvp = &op->file[0]; |
872 | struct afs_vnode_param *vp = &op->file[1]; |
873 | struct afs_call *call; |
874 | __be32 *bp; |
875 | |
876 | _enter("" ); |
877 | |
878 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSLink, |
879 | sizeof(__be32) + |
880 | sizeof(struct yfs_xdr_RPCFlags) + |
881 | sizeof(struct yfs_xdr_YFSFid) + |
882 | xdr_strlen(len: name->len) + |
883 | sizeof(struct yfs_xdr_YFSFid), |
884 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
885 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
886 | sizeof(struct yfs_xdr_YFSVolSync)); |
887 | if (!call) |
888 | return afs_op_nomem(op); |
889 | |
890 | /* marshall the parameters */ |
891 | bp = call->request; |
892 | bp = xdr_encode_u32(bp, n: YFSLINK); |
893 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
894 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
895 | bp = xdr_encode_name(bp, p: name); |
896 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
897 | yfs_check_req(call, bp); |
898 | |
899 | call->fid = vp->fid; |
900 | trace_afs_make_fs_call1(call, fid: &vp->fid, name); |
901 | afs_make_op_call(op, call, GFP_NOFS); |
902 | } |
903 | |
904 | /* |
905 | * Deliver reply data to a YFS.Symlink operation. |
906 | */ |
907 | static int yfs_deliver_fs_symlink(struct afs_call *call) |
908 | { |
909 | struct afs_operation *op = call->op; |
910 | struct afs_vnode_param *dvp = &op->file[0]; |
911 | struct afs_vnode_param *vp = &op->file[1]; |
912 | const __be32 *bp; |
913 | int ret; |
914 | |
915 | _enter("{%u}" , call->unmarshall); |
916 | |
917 | ret = afs_transfer_reply(call); |
918 | if (ret < 0) |
919 | return ret; |
920 | |
921 | /* unmarshall the reply once we've received all of it */ |
922 | bp = call->buffer; |
923 | xdr_decode_YFSFid(bp: &bp, fid: &vp->fid); |
924 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
925 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &dvp->scb); |
926 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
927 | |
928 | _leave(" = 0 [done]" ); |
929 | return 0; |
930 | } |
931 | |
932 | /* |
933 | * YFS.Symlink operation type |
934 | */ |
935 | static const struct afs_call_type yfs_RXYFSSymlink = { |
936 | .name = "YFS.Symlink" , |
937 | .op = yfs_FS_Symlink, |
938 | .deliver = yfs_deliver_fs_symlink, |
939 | .destructor = afs_flat_call_destructor, |
940 | }; |
941 | |
942 | /* |
943 | * Create a symbolic link. |
944 | */ |
945 | void yfs_fs_symlink(struct afs_operation *op) |
946 | { |
947 | const struct qstr *name = &op->dentry->d_name; |
948 | struct afs_vnode_param *dvp = &op->file[0]; |
949 | struct afs_call *call; |
950 | size_t contents_sz; |
951 | mode_t mode = 0777; |
952 | __be32 *bp; |
953 | |
954 | _enter("" ); |
955 | |
956 | contents_sz = strlen(op->create.symlink); |
957 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSSymlink, |
958 | sizeof(__be32) + |
959 | sizeof(struct yfs_xdr_RPCFlags) + |
960 | sizeof(struct yfs_xdr_YFSFid) + |
961 | xdr_strlen(len: name->len) + |
962 | xdr_strlen(len: contents_sz) + |
963 | sizeof(struct yfs_xdr_YFSStoreStatus), |
964 | sizeof(struct yfs_xdr_YFSFid) + |
965 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
966 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
967 | sizeof(struct yfs_xdr_YFSVolSync)); |
968 | if (!call) |
969 | return afs_op_nomem(op); |
970 | |
971 | /* marshall the parameters */ |
972 | bp = call->request; |
973 | bp = xdr_encode_u32(bp, n: YFSSYMLINK); |
974 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
975 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
976 | bp = xdr_encode_name(bp, p: name); |
977 | bp = xdr_encode_string(bp, p: op->create.symlink, len: contents_sz); |
978 | bp = xdr_encode_YFSStoreStatus(bp, mode: &mode, t: &op->mtime); |
979 | yfs_check_req(call, bp); |
980 | |
981 | call->fid = dvp->fid; |
982 | trace_afs_make_fs_call1(call, fid: &dvp->fid, name); |
983 | afs_make_op_call(op, call, GFP_NOFS); |
984 | } |
985 | |
986 | /* |
987 | * Deliver reply data to a YFS.Rename operation. |
988 | */ |
989 | static int yfs_deliver_fs_rename(struct afs_call *call) |
990 | { |
991 | struct afs_operation *op = call->op; |
992 | struct afs_vnode_param *orig_dvp = &op->file[0]; |
993 | struct afs_vnode_param *new_dvp = &op->file[1]; |
994 | const __be32 *bp; |
995 | int ret; |
996 | |
997 | _enter("{%u}" , call->unmarshall); |
998 | |
999 | ret = afs_transfer_reply(call); |
1000 | if (ret < 0) |
1001 | return ret; |
1002 | |
1003 | bp = call->buffer; |
1004 | /* If the two dirs are the same, we have two copies of the same status |
1005 | * report, so we just decode it twice. |
1006 | */ |
1007 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &orig_dvp->scb); |
1008 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &new_dvp->scb); |
1009 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
1010 | _leave(" = 0 [done]" ); |
1011 | return 0; |
1012 | } |
1013 | |
1014 | /* |
1015 | * YFS.Rename operation type |
1016 | */ |
1017 | static const struct afs_call_type yfs_RXYFSRename = { |
1018 | .name = "FS.Rename" , |
1019 | .op = yfs_FS_Rename, |
1020 | .deliver = yfs_deliver_fs_rename, |
1021 | .destructor = afs_flat_call_destructor, |
1022 | }; |
1023 | |
1024 | /* |
1025 | * Rename a file or directory. |
1026 | */ |
1027 | void yfs_fs_rename(struct afs_operation *op) |
1028 | { |
1029 | struct afs_vnode_param *orig_dvp = &op->file[0]; |
1030 | struct afs_vnode_param *new_dvp = &op->file[1]; |
1031 | const struct qstr *orig_name = &op->dentry->d_name; |
1032 | const struct qstr *new_name = &op->dentry_2->d_name; |
1033 | struct afs_call *call; |
1034 | __be32 *bp; |
1035 | |
1036 | _enter("" ); |
1037 | |
1038 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSRename, |
1039 | sizeof(__be32) + |
1040 | sizeof(struct yfs_xdr_RPCFlags) + |
1041 | sizeof(struct yfs_xdr_YFSFid) + |
1042 | xdr_strlen(len: orig_name->len) + |
1043 | sizeof(struct yfs_xdr_YFSFid) + |
1044 | xdr_strlen(len: new_name->len), |
1045 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1046 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1047 | sizeof(struct yfs_xdr_YFSVolSync)); |
1048 | if (!call) |
1049 | return afs_op_nomem(op); |
1050 | |
1051 | /* marshall the parameters */ |
1052 | bp = call->request; |
1053 | bp = xdr_encode_u32(bp, n: YFSRENAME); |
1054 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1055 | bp = xdr_encode_YFSFid(bp, fid: &orig_dvp->fid); |
1056 | bp = xdr_encode_name(bp, p: orig_name); |
1057 | bp = xdr_encode_YFSFid(bp, fid: &new_dvp->fid); |
1058 | bp = xdr_encode_name(bp, p: new_name); |
1059 | yfs_check_req(call, bp); |
1060 | |
1061 | call->fid = orig_dvp->fid; |
1062 | trace_afs_make_fs_call2(call, fid: &orig_dvp->fid, name: orig_name, name2: new_name); |
1063 | afs_make_op_call(op, call, GFP_NOFS); |
1064 | } |
1065 | |
1066 | /* |
1067 | * YFS.StoreData64 operation type. |
1068 | */ |
1069 | static const struct afs_call_type yfs_RXYFSStoreData64 = { |
1070 | .name = "YFS.StoreData64" , |
1071 | .op = yfs_FS_StoreData64, |
1072 | .deliver = yfs_deliver_status_and_volsync, |
1073 | .destructor = afs_flat_call_destructor, |
1074 | }; |
1075 | |
1076 | /* |
1077 | * Store a set of pages to a large file. |
1078 | */ |
1079 | void yfs_fs_store_data(struct afs_operation *op) |
1080 | { |
1081 | struct afs_vnode_param *vp = &op->file[0]; |
1082 | struct afs_call *call; |
1083 | __be32 *bp; |
1084 | |
1085 | _enter(",%x,{%llx:%llu},," , |
1086 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1087 | |
1088 | _debug("size %llx, at %llx, i_size %llx" , |
1089 | (unsigned long long)op->store.size, |
1090 | (unsigned long long)op->store.pos, |
1091 | (unsigned long long)op->store.i_size); |
1092 | |
1093 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64, |
1094 | sizeof(__be32) + |
1095 | sizeof(__be32) + |
1096 | sizeof(struct yfs_xdr_YFSFid) + |
1097 | sizeof(struct yfs_xdr_YFSStoreStatus) + |
1098 | sizeof(struct yfs_xdr_u64) * 3, |
1099 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1100 | sizeof(struct yfs_xdr_YFSVolSync)); |
1101 | if (!call) |
1102 | return afs_op_nomem(op); |
1103 | |
1104 | call->write_iter = op->store.write_iter; |
1105 | |
1106 | /* marshall the parameters */ |
1107 | bp = call->request; |
1108 | bp = xdr_encode_u32(bp, n: YFSSTOREDATA64); |
1109 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1110 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1111 | bp = xdr_encode_YFSStoreStatus(bp, NULL, t: &op->mtime); |
1112 | bp = xdr_encode_u64(bp, n: op->store.pos); |
1113 | bp = xdr_encode_u64(bp, n: op->store.size); |
1114 | bp = xdr_encode_u64(bp, n: op->store.i_size); |
1115 | yfs_check_req(call, bp); |
1116 | |
1117 | call->fid = vp->fid; |
1118 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1119 | afs_make_op_call(op, call, GFP_NOFS); |
1120 | } |
1121 | |
1122 | /* |
1123 | * YFS.StoreStatus operation type |
1124 | */ |
1125 | static const struct afs_call_type yfs_RXYFSStoreStatus = { |
1126 | .name = "YFS.StoreStatus" , |
1127 | .op = yfs_FS_StoreStatus, |
1128 | .deliver = yfs_deliver_status_and_volsync, |
1129 | .destructor = afs_flat_call_destructor, |
1130 | }; |
1131 | |
1132 | static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = { |
1133 | .name = "YFS.StoreData64" , |
1134 | .op = yfs_FS_StoreData64, |
1135 | .deliver = yfs_deliver_status_and_volsync, |
1136 | .destructor = afs_flat_call_destructor, |
1137 | }; |
1138 | |
1139 | /* |
1140 | * Set the attributes on a file, using YFS.StoreData64 rather than |
1141 | * YFS.StoreStatus so as to alter the file size also. |
1142 | */ |
1143 | static void yfs_fs_setattr_size(struct afs_operation *op) |
1144 | { |
1145 | struct afs_vnode_param *vp = &op->file[0]; |
1146 | struct afs_call *call; |
1147 | struct iattr *attr = op->setattr.attr; |
1148 | __be32 *bp; |
1149 | |
1150 | _enter(",%x,{%llx:%llu},," , |
1151 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1152 | |
1153 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64_as_Status, |
1154 | sizeof(__be32) * 2 + |
1155 | sizeof(struct yfs_xdr_YFSFid) + |
1156 | sizeof(struct yfs_xdr_YFSStoreStatus) + |
1157 | sizeof(struct yfs_xdr_u64) * 3, |
1158 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1159 | sizeof(struct yfs_xdr_YFSVolSync)); |
1160 | if (!call) |
1161 | return afs_op_nomem(op); |
1162 | |
1163 | /* marshall the parameters */ |
1164 | bp = call->request; |
1165 | bp = xdr_encode_u32(bp, n: YFSSTOREDATA64); |
1166 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1167 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1168 | bp = xdr_encode_YFS_StoreStatus(bp, attr); |
1169 | bp = xdr_encode_u64(bp, n: attr->ia_size); /* position of start of write */ |
1170 | bp = xdr_encode_u64(bp, n: 0); /* size of write */ |
1171 | bp = xdr_encode_u64(bp, n: attr->ia_size); /* new file length */ |
1172 | yfs_check_req(call, bp); |
1173 | |
1174 | call->fid = vp->fid; |
1175 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1176 | afs_make_op_call(op, call, GFP_NOFS); |
1177 | } |
1178 | |
1179 | /* |
1180 | * Set the attributes on a file, using YFS.StoreData64 if there's a change in |
1181 | * file size, and YFS.StoreStatus otherwise. |
1182 | */ |
1183 | void yfs_fs_setattr(struct afs_operation *op) |
1184 | { |
1185 | struct afs_vnode_param *vp = &op->file[0]; |
1186 | struct afs_call *call; |
1187 | struct iattr *attr = op->setattr.attr; |
1188 | __be32 *bp; |
1189 | |
1190 | if (attr->ia_valid & ATTR_SIZE) |
1191 | return yfs_fs_setattr_size(op); |
1192 | |
1193 | _enter(",%x,{%llx:%llu},," , |
1194 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1195 | |
1196 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreStatus, |
1197 | sizeof(__be32) * 2 + |
1198 | sizeof(struct yfs_xdr_YFSFid) + |
1199 | sizeof(struct yfs_xdr_YFSStoreStatus), |
1200 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1201 | sizeof(struct yfs_xdr_YFSVolSync)); |
1202 | if (!call) |
1203 | return afs_op_nomem(op); |
1204 | |
1205 | /* marshall the parameters */ |
1206 | bp = call->request; |
1207 | bp = xdr_encode_u32(bp, n: YFSSTORESTATUS); |
1208 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1209 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1210 | bp = xdr_encode_YFS_StoreStatus(bp, attr); |
1211 | yfs_check_req(call, bp); |
1212 | |
1213 | call->fid = vp->fid; |
1214 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1215 | afs_make_op_call(op, call, GFP_NOFS); |
1216 | } |
1217 | |
1218 | /* |
1219 | * Deliver reply data to a YFS.GetVolumeStatus operation. |
1220 | */ |
1221 | static int yfs_deliver_fs_get_volume_status(struct afs_call *call) |
1222 | { |
1223 | struct afs_operation *op = call->op; |
1224 | const __be32 *bp; |
1225 | char *p; |
1226 | u32 size; |
1227 | int ret; |
1228 | |
1229 | _enter("{%u}" , call->unmarshall); |
1230 | |
1231 | switch (call->unmarshall) { |
1232 | case 0: |
1233 | call->unmarshall++; |
1234 | afs_extract_to_buf(call, size: sizeof(struct yfs_xdr_YFSFetchVolumeStatus)); |
1235 | fallthrough; |
1236 | |
1237 | /* extract the returned status record */ |
1238 | case 1: |
1239 | _debug("extract status" ); |
1240 | ret = afs_extract_data(call, true); |
1241 | if (ret < 0) |
1242 | return ret; |
1243 | |
1244 | bp = call->buffer; |
1245 | xdr_decode_YFSFetchVolumeStatus(bp: &bp, vs: &op->volstatus.vs); |
1246 | call->unmarshall++; |
1247 | afs_extract_to_tmp(call); |
1248 | fallthrough; |
1249 | |
1250 | /* extract the volume name length */ |
1251 | case 2: |
1252 | ret = afs_extract_data(call, true); |
1253 | if (ret < 0) |
1254 | return ret; |
1255 | |
1256 | call->count = ntohl(call->tmp); |
1257 | _debug("volname length: %u" , call->count); |
1258 | if (call->count >= AFSNAMEMAX) |
1259 | return afs_protocol_error(call, afs_eproto_volname_len); |
1260 | size = (call->count + 3) & ~3; /* It's padded */ |
1261 | afs_extract_to_buf(call, size); |
1262 | call->unmarshall++; |
1263 | fallthrough; |
1264 | |
1265 | /* extract the volume name */ |
1266 | case 3: |
1267 | _debug("extract volname" ); |
1268 | ret = afs_extract_data(call, true); |
1269 | if (ret < 0) |
1270 | return ret; |
1271 | |
1272 | p = call->buffer; |
1273 | p[call->count] = 0; |
1274 | _debug("volname '%s'" , p); |
1275 | afs_extract_to_tmp(call); |
1276 | call->unmarshall++; |
1277 | fallthrough; |
1278 | |
1279 | /* extract the offline message length */ |
1280 | case 4: |
1281 | ret = afs_extract_data(call, true); |
1282 | if (ret < 0) |
1283 | return ret; |
1284 | |
1285 | call->count = ntohl(call->tmp); |
1286 | _debug("offline msg length: %u" , call->count); |
1287 | if (call->count >= AFSNAMEMAX) |
1288 | return afs_protocol_error(call, afs_eproto_offline_msg_len); |
1289 | size = (call->count + 3) & ~3; /* It's padded */ |
1290 | afs_extract_to_buf(call, size); |
1291 | call->unmarshall++; |
1292 | fallthrough; |
1293 | |
1294 | /* extract the offline message */ |
1295 | case 5: |
1296 | _debug("extract offline" ); |
1297 | ret = afs_extract_data(call, true); |
1298 | if (ret < 0) |
1299 | return ret; |
1300 | |
1301 | p = call->buffer; |
1302 | p[call->count] = 0; |
1303 | _debug("offline '%s'" , p); |
1304 | |
1305 | afs_extract_to_tmp(call); |
1306 | call->unmarshall++; |
1307 | fallthrough; |
1308 | |
1309 | /* extract the message of the day length */ |
1310 | case 6: |
1311 | ret = afs_extract_data(call, true); |
1312 | if (ret < 0) |
1313 | return ret; |
1314 | |
1315 | call->count = ntohl(call->tmp); |
1316 | _debug("motd length: %u" , call->count); |
1317 | if (call->count >= AFSNAMEMAX) |
1318 | return afs_protocol_error(call, afs_eproto_motd_len); |
1319 | size = (call->count + 3) & ~3; /* It's padded */ |
1320 | afs_extract_to_buf(call, size); |
1321 | call->unmarshall++; |
1322 | fallthrough; |
1323 | |
1324 | /* extract the message of the day */ |
1325 | case 7: |
1326 | _debug("extract motd" ); |
1327 | ret = afs_extract_data(call, false); |
1328 | if (ret < 0) |
1329 | return ret; |
1330 | |
1331 | p = call->buffer; |
1332 | p[call->count] = 0; |
1333 | _debug("motd '%s'" , p); |
1334 | |
1335 | call->unmarshall++; |
1336 | fallthrough; |
1337 | |
1338 | case 8: |
1339 | break; |
1340 | } |
1341 | |
1342 | _leave(" = 0 [done]" ); |
1343 | return 0; |
1344 | } |
1345 | |
1346 | /* |
1347 | * YFS.GetVolumeStatus operation type |
1348 | */ |
1349 | static const struct afs_call_type yfs_RXYFSGetVolumeStatus = { |
1350 | .name = "YFS.GetVolumeStatus" , |
1351 | .op = yfs_FS_GetVolumeStatus, |
1352 | .deliver = yfs_deliver_fs_get_volume_status, |
1353 | .destructor = afs_flat_call_destructor, |
1354 | }; |
1355 | |
1356 | /* |
1357 | * fetch the status of a volume |
1358 | */ |
1359 | void yfs_fs_get_volume_status(struct afs_operation *op) |
1360 | { |
1361 | struct afs_vnode_param *vp = &op->file[0]; |
1362 | struct afs_call *call; |
1363 | __be32 *bp; |
1364 | |
1365 | _enter("" ); |
1366 | |
1367 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSGetVolumeStatus, |
1368 | sizeof(__be32) * 2 + |
1369 | sizeof(struct yfs_xdr_u64), |
1370 | max_t(size_t, |
1371 | sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + |
1372 | sizeof(__be32), |
1373 | AFSOPAQUEMAX + 1)); |
1374 | if (!call) |
1375 | return afs_op_nomem(op); |
1376 | |
1377 | /* marshall the parameters */ |
1378 | bp = call->request; |
1379 | bp = xdr_encode_u32(bp, n: YFSGETVOLUMESTATUS); |
1380 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1381 | bp = xdr_encode_u64(bp, n: vp->fid.vid); |
1382 | yfs_check_req(call, bp); |
1383 | |
1384 | call->fid = vp->fid; |
1385 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1386 | afs_make_op_call(op, call, GFP_NOFS); |
1387 | } |
1388 | |
1389 | /* |
1390 | * YFS.SetLock operation type |
1391 | */ |
1392 | static const struct afs_call_type yfs_RXYFSSetLock = { |
1393 | .name = "YFS.SetLock" , |
1394 | .op = yfs_FS_SetLock, |
1395 | .deliver = yfs_deliver_status_and_volsync, |
1396 | .done = afs_lock_op_done, |
1397 | .destructor = afs_flat_call_destructor, |
1398 | }; |
1399 | |
1400 | /* |
1401 | * YFS.ExtendLock operation type |
1402 | */ |
1403 | static const struct afs_call_type yfs_RXYFSExtendLock = { |
1404 | .name = "YFS.ExtendLock" , |
1405 | .op = yfs_FS_ExtendLock, |
1406 | .deliver = yfs_deliver_status_and_volsync, |
1407 | .done = afs_lock_op_done, |
1408 | .destructor = afs_flat_call_destructor, |
1409 | }; |
1410 | |
1411 | /* |
1412 | * YFS.ReleaseLock operation type |
1413 | */ |
1414 | static const struct afs_call_type yfs_RXYFSReleaseLock = { |
1415 | .name = "YFS.ReleaseLock" , |
1416 | .op = yfs_FS_ReleaseLock, |
1417 | .deliver = yfs_deliver_status_and_volsync, |
1418 | .destructor = afs_flat_call_destructor, |
1419 | }; |
1420 | |
1421 | /* |
1422 | * Set a lock on a file |
1423 | */ |
1424 | void yfs_fs_set_lock(struct afs_operation *op) |
1425 | { |
1426 | struct afs_vnode_param *vp = &op->file[0]; |
1427 | struct afs_call *call; |
1428 | __be32 *bp; |
1429 | |
1430 | _enter("" ); |
1431 | |
1432 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSSetLock, |
1433 | sizeof(__be32) * 2 + |
1434 | sizeof(struct yfs_xdr_YFSFid) + |
1435 | sizeof(__be32), |
1436 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1437 | sizeof(struct yfs_xdr_YFSVolSync)); |
1438 | if (!call) |
1439 | return afs_op_nomem(op); |
1440 | |
1441 | /* marshall the parameters */ |
1442 | bp = call->request; |
1443 | bp = xdr_encode_u32(bp, n: YFSSETLOCK); |
1444 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1445 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1446 | bp = xdr_encode_u32(bp, n: op->lock.type); |
1447 | yfs_check_req(call, bp); |
1448 | |
1449 | call->fid = vp->fid; |
1450 | trace_afs_make_fs_calli(call, fid: &vp->fid, i: op->lock.type); |
1451 | afs_make_op_call(op, call, GFP_NOFS); |
1452 | } |
1453 | |
1454 | /* |
1455 | * extend a lock on a file |
1456 | */ |
1457 | void yfs_fs_extend_lock(struct afs_operation *op) |
1458 | { |
1459 | struct afs_vnode_param *vp = &op->file[0]; |
1460 | struct afs_call *call; |
1461 | __be32 *bp; |
1462 | |
1463 | _enter("" ); |
1464 | |
1465 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSExtendLock, |
1466 | sizeof(__be32) * 2 + |
1467 | sizeof(struct yfs_xdr_YFSFid), |
1468 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1469 | sizeof(struct yfs_xdr_YFSVolSync)); |
1470 | if (!call) |
1471 | return afs_op_nomem(op); |
1472 | |
1473 | /* marshall the parameters */ |
1474 | bp = call->request; |
1475 | bp = xdr_encode_u32(bp, n: YFSEXTENDLOCK); |
1476 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1477 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1478 | yfs_check_req(call, bp); |
1479 | |
1480 | call->fid = vp->fid; |
1481 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1482 | afs_make_op_call(op, call, GFP_NOFS); |
1483 | } |
1484 | |
1485 | /* |
1486 | * release a lock on a file |
1487 | */ |
1488 | void yfs_fs_release_lock(struct afs_operation *op) |
1489 | { |
1490 | struct afs_vnode_param *vp = &op->file[0]; |
1491 | struct afs_call *call; |
1492 | __be32 *bp; |
1493 | |
1494 | _enter("" ); |
1495 | |
1496 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSReleaseLock, |
1497 | sizeof(__be32) * 2 + |
1498 | sizeof(struct yfs_xdr_YFSFid), |
1499 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1500 | sizeof(struct yfs_xdr_YFSVolSync)); |
1501 | if (!call) |
1502 | return afs_op_nomem(op); |
1503 | |
1504 | /* marshall the parameters */ |
1505 | bp = call->request; |
1506 | bp = xdr_encode_u32(bp, n: YFSRELEASELOCK); |
1507 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1508 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1509 | yfs_check_req(call, bp); |
1510 | |
1511 | call->fid = vp->fid; |
1512 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1513 | afs_make_op_call(op, call, GFP_NOFS); |
1514 | } |
1515 | |
1516 | /* |
1517 | * Deliver a reply to YFS.FetchStatus |
1518 | */ |
1519 | static int yfs_deliver_fs_fetch_status(struct afs_call *call) |
1520 | { |
1521 | struct afs_operation *op = call->op; |
1522 | struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; |
1523 | const __be32 *bp; |
1524 | int ret; |
1525 | |
1526 | ret = afs_transfer_reply(call); |
1527 | if (ret < 0) |
1528 | return ret; |
1529 | |
1530 | /* unmarshall the reply once we've received all of it */ |
1531 | bp = call->buffer; |
1532 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
1533 | xdr_decode_YFSCallBack(bp: &bp, call, scb: &vp->scb); |
1534 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
1535 | |
1536 | _leave(" = 0 [done]" ); |
1537 | return 0; |
1538 | } |
1539 | |
1540 | /* |
1541 | * YFS.FetchStatus operation type |
1542 | */ |
1543 | static const struct afs_call_type yfs_RXYFSFetchStatus = { |
1544 | .name = "YFS.FetchStatus" , |
1545 | .op = yfs_FS_FetchStatus, |
1546 | .deliver = yfs_deliver_fs_fetch_status, |
1547 | .destructor = afs_flat_call_destructor, |
1548 | }; |
1549 | |
1550 | /* |
1551 | * Fetch the status information for a fid without needing a vnode handle. |
1552 | */ |
1553 | void yfs_fs_fetch_status(struct afs_operation *op) |
1554 | { |
1555 | struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; |
1556 | struct afs_call *call; |
1557 | __be32 *bp; |
1558 | |
1559 | _enter(",%x,{%llx:%llu},," , |
1560 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1561 | |
1562 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchStatus, |
1563 | sizeof(__be32) * 2 + |
1564 | sizeof(struct yfs_xdr_YFSFid), |
1565 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1566 | sizeof(struct yfs_xdr_YFSCallBack) + |
1567 | sizeof(struct yfs_xdr_YFSVolSync)); |
1568 | if (!call) |
1569 | return afs_op_nomem(op); |
1570 | |
1571 | /* marshall the parameters */ |
1572 | bp = call->request; |
1573 | bp = xdr_encode_u32(bp, n: YFSFETCHSTATUS); |
1574 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1575 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1576 | yfs_check_req(call, bp); |
1577 | |
1578 | call->fid = vp->fid; |
1579 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1580 | afs_make_op_call(op, call, GFP_NOFS); |
1581 | } |
1582 | |
1583 | /* |
1584 | * Deliver reply data to an YFS.InlineBulkStatus call |
1585 | */ |
1586 | static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) |
1587 | { |
1588 | struct afs_operation *op = call->op; |
1589 | struct afs_status_cb *scb; |
1590 | const __be32 *bp; |
1591 | u32 tmp; |
1592 | int ret; |
1593 | |
1594 | _enter("{%u}" , call->unmarshall); |
1595 | |
1596 | switch (call->unmarshall) { |
1597 | case 0: |
1598 | afs_extract_to_tmp(call); |
1599 | call->unmarshall++; |
1600 | fallthrough; |
1601 | |
1602 | /* Extract the file status count and array in two steps */ |
1603 | case 1: |
1604 | _debug("extract status count" ); |
1605 | ret = afs_extract_data(call, true); |
1606 | if (ret < 0) |
1607 | return ret; |
1608 | |
1609 | tmp = ntohl(call->tmp); |
1610 | _debug("status count: %u/%u" , tmp, op->nr_files); |
1611 | if (tmp != op->nr_files) |
1612 | return afs_protocol_error(call, afs_eproto_ibulkst_count); |
1613 | |
1614 | call->count = 0; |
1615 | call->unmarshall++; |
1616 | more_counts: |
1617 | afs_extract_to_buf(call, size: sizeof(struct yfs_xdr_YFSFetchStatus)); |
1618 | fallthrough; |
1619 | |
1620 | case 2: |
1621 | _debug("extract status array %u" , call->count); |
1622 | ret = afs_extract_data(call, true); |
1623 | if (ret < 0) |
1624 | return ret; |
1625 | |
1626 | switch (call->count) { |
1627 | case 0: |
1628 | scb = &op->file[0].scb; |
1629 | break; |
1630 | case 1: |
1631 | scb = &op->file[1].scb; |
1632 | break; |
1633 | default: |
1634 | scb = &op->more_files[call->count - 2].scb; |
1635 | break; |
1636 | } |
1637 | |
1638 | bp = call->buffer; |
1639 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb); |
1640 | |
1641 | call->count++; |
1642 | if (call->count < op->nr_files) |
1643 | goto more_counts; |
1644 | |
1645 | call->count = 0; |
1646 | call->unmarshall++; |
1647 | afs_extract_to_tmp(call); |
1648 | fallthrough; |
1649 | |
1650 | /* Extract the callback count and array in two steps */ |
1651 | case 3: |
1652 | _debug("extract CB count" ); |
1653 | ret = afs_extract_data(call, true); |
1654 | if (ret < 0) |
1655 | return ret; |
1656 | |
1657 | tmp = ntohl(call->tmp); |
1658 | _debug("CB count: %u" , tmp); |
1659 | if (tmp != op->nr_files) |
1660 | return afs_protocol_error(call, afs_eproto_ibulkst_cb_count); |
1661 | call->count = 0; |
1662 | call->unmarshall++; |
1663 | more_cbs: |
1664 | afs_extract_to_buf(call, size: sizeof(struct yfs_xdr_YFSCallBack)); |
1665 | fallthrough; |
1666 | |
1667 | case 4: |
1668 | _debug("extract CB array" ); |
1669 | ret = afs_extract_data(call, true); |
1670 | if (ret < 0) |
1671 | return ret; |
1672 | |
1673 | _debug("unmarshall CB array" ); |
1674 | switch (call->count) { |
1675 | case 0: |
1676 | scb = &op->file[0].scb; |
1677 | break; |
1678 | case 1: |
1679 | scb = &op->file[1].scb; |
1680 | break; |
1681 | default: |
1682 | scb = &op->more_files[call->count - 2].scb; |
1683 | break; |
1684 | } |
1685 | |
1686 | bp = call->buffer; |
1687 | xdr_decode_YFSCallBack(bp: &bp, call, scb); |
1688 | call->count++; |
1689 | if (call->count < op->nr_files) |
1690 | goto more_cbs; |
1691 | |
1692 | afs_extract_to_buf(call, size: sizeof(struct yfs_xdr_YFSVolSync)); |
1693 | call->unmarshall++; |
1694 | fallthrough; |
1695 | |
1696 | case 5: |
1697 | ret = afs_extract_data(call, false); |
1698 | if (ret < 0) |
1699 | return ret; |
1700 | |
1701 | bp = call->buffer; |
1702 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
1703 | |
1704 | call->unmarshall++; |
1705 | fallthrough; |
1706 | |
1707 | case 6: |
1708 | break; |
1709 | } |
1710 | |
1711 | _leave(" = 0 [done]" ); |
1712 | return 0; |
1713 | } |
1714 | |
1715 | /* |
1716 | * FS.InlineBulkStatus operation type |
1717 | */ |
1718 | static const struct afs_call_type yfs_RXYFSInlineBulkStatus = { |
1719 | .name = "YFS.InlineBulkStatus" , |
1720 | .op = yfs_FS_InlineBulkStatus, |
1721 | .deliver = yfs_deliver_fs_inline_bulk_status, |
1722 | .destructor = afs_flat_call_destructor, |
1723 | }; |
1724 | |
1725 | /* |
1726 | * Fetch the status information for up to 1024 files |
1727 | */ |
1728 | void yfs_fs_inline_bulk_status(struct afs_operation *op) |
1729 | { |
1730 | struct afs_vnode_param *dvp = &op->file[0]; |
1731 | struct afs_vnode_param *vp = &op->file[1]; |
1732 | struct afs_call *call; |
1733 | __be32 *bp; |
1734 | int i; |
1735 | |
1736 | _enter(",%x,{%llx:%llu},%u" , |
1737 | key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files); |
1738 | |
1739 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSInlineBulkStatus, |
1740 | sizeof(__be32) + |
1741 | sizeof(__be32) + |
1742 | sizeof(__be32) + |
1743 | sizeof(struct yfs_xdr_YFSFid) * op->nr_files, |
1744 | sizeof(struct yfs_xdr_YFSFetchStatus)); |
1745 | if (!call) |
1746 | return afs_op_nomem(op); |
1747 | |
1748 | /* marshall the parameters */ |
1749 | bp = call->request; |
1750 | bp = xdr_encode_u32(bp, n: YFSINLINEBULKSTATUS); |
1751 | bp = xdr_encode_u32(bp, n: 0); /* RPCFlags */ |
1752 | bp = xdr_encode_u32(bp, n: op->nr_files); |
1753 | bp = xdr_encode_YFSFid(bp, fid: &dvp->fid); |
1754 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1755 | for (i = 0; i < op->nr_files - 2; i++) |
1756 | bp = xdr_encode_YFSFid(bp, fid: &op->more_files[i].fid); |
1757 | yfs_check_req(call, bp); |
1758 | |
1759 | call->fid = vp->fid; |
1760 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1761 | afs_make_op_call(op, call, GFP_NOFS); |
1762 | } |
1763 | |
1764 | /* |
1765 | * Deliver reply data to an YFS.FetchOpaqueACL. |
1766 | */ |
1767 | static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) |
1768 | { |
1769 | struct afs_operation *op = call->op; |
1770 | struct afs_vnode_param *vp = &op->file[0]; |
1771 | struct yfs_acl *yacl = op->yacl; |
1772 | struct afs_acl *acl; |
1773 | const __be32 *bp; |
1774 | unsigned int size; |
1775 | int ret; |
1776 | |
1777 | _enter("{%u}" , call->unmarshall); |
1778 | |
1779 | switch (call->unmarshall) { |
1780 | case 0: |
1781 | afs_extract_to_tmp(call); |
1782 | call->unmarshall++; |
1783 | fallthrough; |
1784 | |
1785 | /* Extract the file ACL length */ |
1786 | case 1: |
1787 | ret = afs_extract_data(call, true); |
1788 | if (ret < 0) |
1789 | return ret; |
1790 | |
1791 | size = call->count2 = ntohl(call->tmp); |
1792 | size = round_up(size, 4); |
1793 | |
1794 | if (yacl->flags & YFS_ACL_WANT_ACL) { |
1795 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
1796 | if (!acl) |
1797 | return -ENOMEM; |
1798 | yacl->acl = acl; |
1799 | acl->size = call->count2; |
1800 | afs_extract_begin(call, buf: acl->data, size); |
1801 | } else { |
1802 | afs_extract_discard(call, size); |
1803 | } |
1804 | call->unmarshall++; |
1805 | fallthrough; |
1806 | |
1807 | /* Extract the file ACL */ |
1808 | case 2: |
1809 | ret = afs_extract_data(call, true); |
1810 | if (ret < 0) |
1811 | return ret; |
1812 | |
1813 | afs_extract_to_tmp(call); |
1814 | call->unmarshall++; |
1815 | fallthrough; |
1816 | |
1817 | /* Extract the volume ACL length */ |
1818 | case 3: |
1819 | ret = afs_extract_data(call, true); |
1820 | if (ret < 0) |
1821 | return ret; |
1822 | |
1823 | size = call->count2 = ntohl(call->tmp); |
1824 | size = round_up(size, 4); |
1825 | |
1826 | if (yacl->flags & YFS_ACL_WANT_VOL_ACL) { |
1827 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
1828 | if (!acl) |
1829 | return -ENOMEM; |
1830 | yacl->vol_acl = acl; |
1831 | acl->size = call->count2; |
1832 | afs_extract_begin(call, buf: acl->data, size); |
1833 | } else { |
1834 | afs_extract_discard(call, size); |
1835 | } |
1836 | call->unmarshall++; |
1837 | fallthrough; |
1838 | |
1839 | /* Extract the volume ACL */ |
1840 | case 4: |
1841 | ret = afs_extract_data(call, true); |
1842 | if (ret < 0) |
1843 | return ret; |
1844 | |
1845 | afs_extract_to_buf(call, |
1846 | size: sizeof(__be32) * 2 + |
1847 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1848 | sizeof(struct yfs_xdr_YFSVolSync)); |
1849 | call->unmarshall++; |
1850 | fallthrough; |
1851 | |
1852 | /* extract the metadata */ |
1853 | case 5: |
1854 | ret = afs_extract_data(call, false); |
1855 | if (ret < 0) |
1856 | return ret; |
1857 | |
1858 | bp = call->buffer; |
1859 | yacl->inherit_flag = ntohl(*bp++); |
1860 | yacl->num_cleaned = ntohl(*bp++); |
1861 | xdr_decode_YFSFetchStatus(bp: &bp, call, scb: &vp->scb); |
1862 | xdr_decode_YFSVolSync(bp: &bp, volsync: &op->volsync); |
1863 | |
1864 | call->unmarshall++; |
1865 | fallthrough; |
1866 | |
1867 | case 6: |
1868 | break; |
1869 | } |
1870 | |
1871 | _leave(" = 0 [done]" ); |
1872 | return 0; |
1873 | } |
1874 | |
1875 | void yfs_free_opaque_acl(struct yfs_acl *yacl) |
1876 | { |
1877 | if (yacl) { |
1878 | kfree(objp: yacl->acl); |
1879 | kfree(objp: yacl->vol_acl); |
1880 | kfree(objp: yacl); |
1881 | } |
1882 | } |
1883 | |
1884 | /* |
1885 | * YFS.FetchOpaqueACL operation type |
1886 | */ |
1887 | static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { |
1888 | .name = "YFS.FetchOpaqueACL" , |
1889 | .op = yfs_FS_FetchOpaqueACL, |
1890 | .deliver = yfs_deliver_fs_fetch_opaque_acl, |
1891 | .destructor = afs_flat_call_destructor, |
1892 | }; |
1893 | |
1894 | /* |
1895 | * Fetch the YFS advanced ACLs for a file. |
1896 | */ |
1897 | void yfs_fs_fetch_opaque_acl(struct afs_operation *op) |
1898 | { |
1899 | struct afs_vnode_param *vp = &op->file[0]; |
1900 | struct afs_call *call; |
1901 | __be32 *bp; |
1902 | |
1903 | _enter(",%x,{%llx:%llu},," , |
1904 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1905 | |
1906 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchOpaqueACL, |
1907 | sizeof(__be32) * 2 + |
1908 | sizeof(struct yfs_xdr_YFSFid), |
1909 | sizeof(__be32) * 2 + |
1910 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1911 | sizeof(struct yfs_xdr_YFSVolSync)); |
1912 | if (!call) |
1913 | return afs_op_nomem(op); |
1914 | |
1915 | /* marshall the parameters */ |
1916 | bp = call->request; |
1917 | bp = xdr_encode_u32(bp, n: YFSFETCHOPAQUEACL); |
1918 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1919 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1920 | yfs_check_req(call, bp); |
1921 | |
1922 | call->fid = vp->fid; |
1923 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1924 | afs_make_op_call(op, call, GFP_KERNEL); |
1925 | } |
1926 | |
1927 | /* |
1928 | * YFS.StoreOpaqueACL2 operation type |
1929 | */ |
1930 | static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { |
1931 | .name = "YFS.StoreOpaqueACL2" , |
1932 | .op = yfs_FS_StoreOpaqueACL2, |
1933 | .deliver = yfs_deliver_status_and_volsync, |
1934 | .destructor = afs_flat_call_destructor, |
1935 | }; |
1936 | |
1937 | /* |
1938 | * Fetch the YFS ACL for a file. |
1939 | */ |
1940 | void yfs_fs_store_opaque_acl2(struct afs_operation *op) |
1941 | { |
1942 | struct afs_vnode_param *vp = &op->file[0]; |
1943 | struct afs_call *call; |
1944 | struct afs_acl *acl = op->acl; |
1945 | size_t size; |
1946 | __be32 *bp; |
1947 | |
1948 | _enter(",%x,{%llx:%llu},," , |
1949 | key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
1950 | |
1951 | size = round_up(acl->size, 4); |
1952 | call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreOpaqueACL2, |
1953 | sizeof(__be32) * 2 + |
1954 | sizeof(struct yfs_xdr_YFSFid) + |
1955 | sizeof(__be32) + size, |
1956 | sizeof(struct yfs_xdr_YFSFetchStatus) + |
1957 | sizeof(struct yfs_xdr_YFSVolSync)); |
1958 | if (!call) |
1959 | return afs_op_nomem(op); |
1960 | |
1961 | /* marshall the parameters */ |
1962 | bp = call->request; |
1963 | bp = xdr_encode_u32(bp, n: YFSSTOREOPAQUEACL2); |
1964 | bp = xdr_encode_u32(bp, n: 0); /* RPC flags */ |
1965 | bp = xdr_encode_YFSFid(bp, fid: &vp->fid); |
1966 | bp = xdr_encode_u32(bp, n: acl->size); |
1967 | memcpy(bp, acl->data, acl->size); |
1968 | if (acl->size != size) |
1969 | memset((void *)bp + acl->size, 0, size - acl->size); |
1970 | bp += size / sizeof(__be32); |
1971 | yfs_check_req(call, bp); |
1972 | |
1973 | call->fid = vp->fid; |
1974 | trace_afs_make_fs_call(call, fid: &vp->fid); |
1975 | afs_make_op_call(op, call, GFP_KERNEL); |
1976 | } |
1977 | |