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30062bd1 DH |
1 | /* YFS File Server client stubs |
2 | * | |
3 | * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public Licence | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the Licence, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/sched.h> | |
15 | #include <linux/circ_buf.h> | |
16 | #include <linux/iversion.h> | |
17 | #include "internal.h" | |
18 | #include "afs_fs.h" | |
19 | #include "xdr_fs.h" | |
20 | #include "protocol_yfs.h" | |
21 | ||
22 | static const struct afs_fid afs_zero_fid; | |
23 | ||
24 | static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi) | |
25 | { | |
26 | call->cbi = afs_get_cb_interest(cbi); | |
27 | } | |
28 | ||
29 | #define xdr_size(x) (sizeof(*x) / sizeof(__be32)) | |
30 | ||
31 | static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid) | |
32 | { | |
33 | const struct yfs_xdr_YFSFid *x = (const void *)*_bp; | |
34 | ||
35 | fid->vid = xdr_to_u64(x->volume); | |
36 | fid->vnode = xdr_to_u64(x->vnode.lo); | |
37 | fid->vnode_hi = ntohl(x->vnode.hi); | |
38 | fid->unique = ntohl(x->vnode.unique); | |
39 | *_bp += xdr_size(x); | |
40 | } | |
41 | ||
42 | static __be32 *xdr_encode_u32(__be32 *bp, u32 n) | |
43 | { | |
44 | *bp++ = htonl(n); | |
45 | return bp; | |
46 | } | |
47 | ||
48 | static __be32 *xdr_encode_u64(__be32 *bp, u64 n) | |
49 | { | |
50 | struct yfs_xdr_u64 *x = (void *)bp; | |
51 | ||
52 | *x = u64_to_xdr(n); | |
53 | return bp + xdr_size(x); | |
54 | } | |
55 | ||
56 | static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid) | |
57 | { | |
58 | struct yfs_xdr_YFSFid *x = (void *)bp; | |
59 | ||
60 | x->volume = u64_to_xdr(fid->vid); | |
61 | x->vnode.lo = u64_to_xdr(fid->vnode); | |
62 | x->vnode.hi = htonl(fid->vnode_hi); | |
63 | x->vnode.unique = htonl(fid->unique); | |
64 | return bp + xdr_size(x); | |
65 | } | |
66 | ||
67 | static size_t xdr_strlen(unsigned int len) | |
68 | { | |
69 | return sizeof(__be32) + round_up(len, sizeof(__be32)); | |
70 | } | |
71 | ||
72 | static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len) | |
73 | { | |
74 | bp = xdr_encode_u32(bp, len); | |
75 | bp = memcpy(bp, p, len); | |
76 | if (len & 3) { | |
77 | unsigned int pad = 4 - (len & 3); | |
78 | ||
79 | memset((u8 *)bp + len, 0, pad); | |
80 | len += pad; | |
81 | } | |
82 | ||
83 | return bp + len / sizeof(__be32); | |
84 | } | |
85 | ||
86 | static s64 linux_to_yfs_time(const struct timespec64 *t) | |
87 | { | |
88 | /* Convert to 100ns intervals. */ | |
89 | return (u64)t->tv_sec * 10000000 + t->tv_nsec/100; | |
90 | } | |
91 | ||
92 | static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode) | |
93 | { | |
94 | struct yfs_xdr_YFSStoreStatus *x = (void *)bp; | |
95 | ||
96 | x->mask = htonl(AFS_SET_MODE); | |
97 | x->mode = htonl(mode & S_IALLUGO); | |
98 | x->mtime_client = u64_to_xdr(0); | |
99 | x->owner = u64_to_xdr(0); | |
100 | x->group = u64_to_xdr(0); | |
101 | return bp + xdr_size(x); | |
102 | } | |
103 | ||
104 | static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t) | |
105 | { | |
106 | struct yfs_xdr_YFSStoreStatus *x = (void *)bp; | |
107 | s64 mtime = linux_to_yfs_time(t); | |
108 | ||
109 | x->mask = htonl(AFS_SET_MTIME); | |
110 | x->mode = htonl(0); | |
111 | x->mtime_client = u64_to_xdr(mtime); | |
112 | x->owner = u64_to_xdr(0); | |
113 | x->group = u64_to_xdr(0); | |
114 | return bp + xdr_size(x); | |
115 | } | |
116 | ||
117 | /* | |
118 | * Convert a signed 100ns-resolution 64-bit time into a timespec. | |
119 | */ | |
120 | static struct timespec64 yfs_time_to_linux(s64 t) | |
121 | { | |
122 | struct timespec64 ts; | |
123 | u64 abs_t; | |
124 | ||
125 | /* | |
126 | * Unfortunately can not use normal 64 bit division on 32 bit arch, but | |
127 | * the alternative, do_div, does not work with negative numbers so have | |
128 | * to special case them | |
129 | */ | |
130 | if (t < 0) { | |
131 | abs_t = -t; | |
132 | ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100); | |
133 | ts.tv_nsec = -ts.tv_nsec; | |
134 | ts.tv_sec = -abs_t; | |
135 | } else { | |
136 | abs_t = t; | |
137 | ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100; | |
138 | ts.tv_sec = abs_t; | |
139 | } | |
140 | ||
141 | return ts; | |
142 | } | |
143 | ||
144 | static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr) | |
145 | { | |
146 | s64 t = xdr_to_u64(xdr); | |
147 | ||
148 | return yfs_time_to_linux(t); | |
149 | } | |
150 | ||
151 | static void yfs_check_req(struct afs_call *call, __be32 *bp) | |
152 | { | |
153 | size_t len = (void *)bp - call->request; | |
154 | ||
155 | if (len > call->request_size) | |
156 | pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n", | |
157 | call->type->name, len, call->request_size); | |
158 | else if (len < call->request_size) | |
159 | pr_warning("kAFS: %s: Request buffer underflow (%zu<%u)\n", | |
160 | call->type->name, len, call->request_size); | |
161 | } | |
162 | ||
163 | /* | |
164 | * Dump a bad file status record. | |
165 | */ | |
166 | static void xdr_dump_bad(const __be32 *bp) | |
167 | { | |
168 | __be32 x[4]; | |
169 | int i; | |
170 | ||
171 | pr_notice("YFS XDR: Bad status record\n"); | |
172 | for (i = 0; i < 5 * 4 * 4; i += 16) { | |
173 | memcpy(x, bp, 16); | |
174 | bp += 4; | |
175 | pr_notice("%03x: %08x %08x %08x %08x\n", | |
176 | i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); | |
177 | } | |
178 | ||
179 | memcpy(x, bp, 4); | |
180 | pr_notice("0x50: %08x\n", ntohl(x[0])); | |
181 | } | |
182 | ||
183 | /* | |
184 | * Decode a YFSFetchStatus block | |
185 | */ | |
a58823ac DH |
186 | static int xdr_decode_YFSFetchStatus(const __be32 **_bp, |
187 | struct afs_call *call, | |
188 | struct afs_status_cb *scb) | |
30062bd1 DH |
189 | { |
190 | const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp; | |
a58823ac | 191 | struct afs_file_status *status = &scb->status; |
30062bd1 | 192 | u32 type; |
30062bd1 DH |
193 | |
194 | status->abort_code = ntohl(xdr->abort_code); | |
195 | if (status->abort_code != 0) { | |
a58823ac | 196 | if (status->abort_code == VNOVNODE) |
30062bd1 | 197 | status->nlink = 0; |
a38a7558 | 198 | scb->have_error = true; |
30062bd1 DH |
199 | return 0; |
200 | } | |
201 | ||
202 | type = ntohl(xdr->type); | |
203 | switch (type) { | |
204 | case AFS_FTYPE_FILE: | |
205 | case AFS_FTYPE_DIR: | |
206 | case AFS_FTYPE_SYMLINK: | |
30062bd1 DH |
207 | status->type = type; |
208 | break; | |
209 | default: | |
210 | goto bad; | |
211 | } | |
212 | ||
a58823ac DH |
213 | status->nlink = ntohl(xdr->nlink); |
214 | status->author = xdr_to_u64(xdr->author); | |
215 | status->owner = xdr_to_u64(xdr->owner); | |
216 | status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ | |
217 | status->anon_access = ntohl(xdr->anon_access); | |
218 | status->mode = ntohl(xdr->mode) & S_IALLUGO; | |
219 | status->group = xdr_to_u64(xdr->group); | |
220 | status->lock_count = ntohl(xdr->lock_count); | |
30062bd1 | 221 | |
a58823ac DH |
222 | status->mtime_client = xdr_to_time(xdr->mtime_client); |
223 | status->mtime_server = xdr_to_time(xdr->mtime_server); | |
224 | status->size = xdr_to_u64(xdr->size); | |
225 | status->data_version = xdr_to_u64(xdr->data_version); | |
a38a7558 | 226 | scb->have_status = true; |
30062bd1 | 227 | |
a58823ac | 228 | *_bp += xdr_size(xdr); |
30062bd1 DH |
229 | return 0; |
230 | ||
231 | bad: | |
232 | xdr_dump_bad(*_bp); | |
233 | return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status); | |
234 | } | |
235 | ||
236 | /* | |
a58823ac | 237 | * Decode a YFSCallBack block |
30062bd1 | 238 | */ |
a58823ac DH |
239 | static void xdr_decode_YFSCallBack(const __be32 **_bp, |
240 | struct afs_call *call, | |
241 | struct afs_status_cb *scb) | |
78107055 DH |
242 | { |
243 | struct yfs_xdr_YFSCallBack *x = (void *)*_bp; | |
a58823ac | 244 | struct afs_callback *cb = &scb->callback; |
78107055 DH |
245 | ktime_t cb_expiry; |
246 | ||
247 | cb_expiry = call->reply_time; | |
248 | cb_expiry = ktime_add(cb_expiry, xdr_to_u64(x->expiration_time) * 100); | |
249 | cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC); | |
a58823ac | 250 | scb->have_cb = true; |
78107055 DH |
251 | *_bp += xdr_size(x); |
252 | } | |
253 | ||
30062bd1 DH |
254 | /* |
255 | * Decode a YFSVolSync block | |
256 | */ | |
257 | static void xdr_decode_YFSVolSync(const __be32 **_bp, | |
258 | struct afs_volsync *volsync) | |
259 | { | |
260 | struct yfs_xdr_YFSVolSync *x = (void *)*_bp; | |
261 | u64 creation; | |
262 | ||
263 | if (volsync) { | |
264 | creation = xdr_to_u64(x->vol_creation_date); | |
265 | do_div(creation, 10 * 1000 * 1000); | |
266 | volsync->creation = creation; | |
267 | } | |
268 | ||
269 | *_bp += xdr_size(x); | |
270 | } | |
271 | ||
272 | /* | |
273 | * Encode the requested attributes into a YFSStoreStatus block | |
274 | */ | |
275 | static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr) | |
276 | { | |
277 | struct yfs_xdr_YFSStoreStatus *x = (void *)bp; | |
278 | s64 mtime = 0, owner = 0, group = 0; | |
279 | u32 mask = 0, mode = 0; | |
280 | ||
281 | mask = 0; | |
282 | if (attr->ia_valid & ATTR_MTIME) { | |
283 | mask |= AFS_SET_MTIME; | |
284 | mtime = linux_to_yfs_time(&attr->ia_mtime); | |
285 | } | |
286 | ||
287 | if (attr->ia_valid & ATTR_UID) { | |
288 | mask |= AFS_SET_OWNER; | |
289 | owner = from_kuid(&init_user_ns, attr->ia_uid); | |
290 | } | |
291 | ||
292 | if (attr->ia_valid & ATTR_GID) { | |
293 | mask |= AFS_SET_GROUP; | |
294 | group = from_kgid(&init_user_ns, attr->ia_gid); | |
295 | } | |
296 | ||
297 | if (attr->ia_valid & ATTR_MODE) { | |
298 | mask |= AFS_SET_MODE; | |
299 | mode = attr->ia_mode & S_IALLUGO; | |
300 | } | |
301 | ||
302 | x->mask = htonl(mask); | |
303 | x->mode = htonl(mode); | |
304 | x->mtime_client = u64_to_xdr(mtime); | |
305 | x->owner = u64_to_xdr(owner); | |
306 | x->group = u64_to_xdr(group); | |
307 | return bp + xdr_size(x); | |
308 | } | |
309 | ||
310 | /* | |
311 | * Decode a YFSFetchVolumeStatus block. | |
312 | */ | |
313 | static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp, | |
314 | struct afs_volume_status *vs) | |
315 | { | |
316 | const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp; | |
317 | u32 flags; | |
318 | ||
319 | vs->vid = xdr_to_u64(x->vid); | |
320 | vs->parent_id = xdr_to_u64(x->parent_id); | |
321 | flags = ntohl(x->flags); | |
322 | vs->online = flags & yfs_FVSOnline; | |
323 | vs->in_service = flags & yfs_FVSInservice; | |
324 | vs->blessed = flags & yfs_FVSBlessed; | |
325 | vs->needs_salvage = flags & yfs_FVSNeedsSalvage; | |
326 | vs->type = ntohl(x->type); | |
327 | vs->min_quota = 0; | |
328 | vs->max_quota = xdr_to_u64(x->max_quota); | |
329 | vs->blocks_in_use = xdr_to_u64(x->blocks_in_use); | |
330 | vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail); | |
331 | vs->part_max_blocks = xdr_to_u64(x->part_max_blocks); | |
332 | vs->vol_copy_date = xdr_to_u64(x->vol_copy_date); | |
333 | vs->vol_backup_date = xdr_to_u64(x->vol_backup_date); | |
334 | *_bp += sizeof(*x) / sizeof(__be32); | |
335 | } | |
336 | ||
337 | /* | |
a58823ac | 338 | * Deliver a reply that's a status, callback and volsync. |
30062bd1 | 339 | */ |
a58823ac | 340 | static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call) |
30062bd1 | 341 | { |
30062bd1 DH |
342 | const __be32 *bp; |
343 | int ret; | |
344 | ||
345 | ret = afs_transfer_reply(call); | |
346 | if (ret < 0) | |
347 | return ret; | |
348 | ||
30062bd1 DH |
349 | /* unmarshall the reply once we've received all of it */ |
350 | bp = call->buffer; | |
a58823ac DH |
351 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
352 | if (ret < 0) | |
353 | return ret; | |
354 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); | |
355 | xdr_decode_YFSVolSync(&bp, call->out_volsync); | |
356 | ||
357 | _leave(" = 0 [done]"); | |
358 | return 0; | |
359 | } | |
360 | ||
361 | /* | |
362 | * Deliver reply data to operations that just return a file status and a volume | |
363 | * sync record. | |
364 | */ | |
365 | static int yfs_deliver_status_and_volsync(struct afs_call *call) | |
366 | { | |
367 | const __be32 *bp; | |
368 | int ret; | |
369 | ||
370 | ret = afs_transfer_reply(call); | |
371 | if (ret < 0) | |
372 | return ret; | |
373 | ||
374 | bp = call->buffer; | |
375 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); | |
30062bd1 DH |
376 | if (ret < 0) |
377 | return ret; | |
ffba718e | 378 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
379 | |
380 | _leave(" = 0 [done]"); | |
381 | return 0; | |
382 | } | |
383 | ||
384 | /* | |
385 | * YFS.FetchStatus operation type | |
386 | */ | |
387 | static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = { | |
388 | .name = "YFS.FetchStatus(vnode)", | |
389 | .op = yfs_FS_FetchStatus, | |
a58823ac | 390 | .deliver = yfs_deliver_fs_status_cb_and_volsync, |
30062bd1 DH |
391 | .destructor = afs_flat_call_destructor, |
392 | }; | |
393 | ||
394 | /* | |
395 | * Fetch the status information for a file. | |
396 | */ | |
a58823ac DH |
397 | int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb, |
398 | struct afs_volsync *volsync) | |
30062bd1 DH |
399 | { |
400 | struct afs_vnode *vnode = fc->vnode; | |
401 | struct afs_call *call; | |
402 | struct afs_net *net = afs_v2net(vnode); | |
403 | __be32 *bp; | |
404 | ||
405 | _enter(",%x,{%llx:%llu},,", | |
406 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
407 | ||
408 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode, | |
409 | sizeof(__be32) * 2 + | |
410 | sizeof(struct yfs_xdr_YFSFid), | |
411 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
412 | sizeof(struct yfs_xdr_YFSCallBack) + | |
413 | sizeof(struct yfs_xdr_YFSVolSync)); | |
414 | if (!call) { | |
415 | fc->ac.error = -ENOMEM; | |
416 | return -ENOMEM; | |
417 | } | |
418 | ||
419 | call->key = fc->key; | |
a58823ac | 420 | call->out_scb = scb; |
ffba718e | 421 | call->out_volsync = volsync; |
30062bd1 DH |
422 | |
423 | /* marshall the parameters */ | |
424 | bp = call->request; | |
425 | bp = xdr_encode_u32(bp, YFSFETCHSTATUS); | |
426 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
427 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
428 | yfs_check_req(call, bp); | |
429 | ||
30062bd1 DH |
430 | afs_use_fs_server(call, fc->cbi); |
431 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 432 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
433 | afs_make_call(&fc->ac, call, GFP_NOFS); |
434 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
435 | } |
436 | ||
437 | /* | |
438 | * Deliver reply data to an YFS.FetchData64. | |
439 | */ | |
440 | static int yfs_deliver_fs_fetch_data64(struct afs_call *call) | |
441 | { | |
ffba718e | 442 | struct afs_read *req = call->read_request; |
30062bd1 DH |
443 | const __be32 *bp; |
444 | unsigned int size; | |
445 | int ret; | |
446 | ||
447 | _enter("{%u,%zu/%llu}", | |
448 | call->unmarshall, iov_iter_count(&call->iter), req->actual_len); | |
449 | ||
450 | switch (call->unmarshall) { | |
451 | case 0: | |
452 | req->actual_len = 0; | |
453 | req->index = 0; | |
454 | req->offset = req->pos & (PAGE_SIZE - 1); | |
455 | afs_extract_to_tmp64(call); | |
456 | call->unmarshall++; | |
457 | ||
e690c9e3 | 458 | /* Fall through - and extract the returned data length */ |
30062bd1 DH |
459 | case 1: |
460 | _debug("extract data length"); | |
461 | ret = afs_extract_data(call, true); | |
462 | if (ret < 0) | |
463 | return ret; | |
464 | ||
465 | req->actual_len = be64_to_cpu(call->tmp64); | |
466 | _debug("DATA length: %llu", req->actual_len); | |
467 | req->remain = min(req->len, req->actual_len); | |
468 | if (req->remain == 0) | |
469 | goto no_more_data; | |
470 | ||
471 | call->unmarshall++; | |
472 | ||
473 | begin_page: | |
474 | ASSERTCMP(req->index, <, req->nr_pages); | |
475 | if (req->remain > PAGE_SIZE - req->offset) | |
476 | size = PAGE_SIZE - req->offset; | |
477 | else | |
478 | size = req->remain; | |
479 | call->bvec[0].bv_len = size; | |
480 | call->bvec[0].bv_offset = req->offset; | |
481 | call->bvec[0].bv_page = req->pages[req->index]; | |
482 | iov_iter_bvec(&call->iter, READ, call->bvec, 1, size); | |
483 | ASSERTCMP(size, <=, PAGE_SIZE); | |
484 | ||
e690c9e3 | 485 | /* Fall through - and extract the returned data */ |
30062bd1 DH |
486 | case 2: |
487 | _debug("extract data %zu/%llu", | |
488 | iov_iter_count(&call->iter), req->remain); | |
489 | ||
490 | ret = afs_extract_data(call, true); | |
491 | if (ret < 0) | |
492 | return ret; | |
493 | req->remain -= call->bvec[0].bv_len; | |
494 | req->offset += call->bvec[0].bv_len; | |
495 | ASSERTCMP(req->offset, <=, PAGE_SIZE); | |
496 | if (req->offset == PAGE_SIZE) { | |
497 | req->offset = 0; | |
498 | if (req->page_done) | |
a58823ac | 499 | req->page_done(req); |
30062bd1 DH |
500 | req->index++; |
501 | if (req->remain > 0) | |
502 | goto begin_page; | |
503 | } | |
504 | ||
505 | ASSERTCMP(req->remain, ==, 0); | |
506 | if (req->actual_len <= req->len) | |
507 | goto no_more_data; | |
508 | ||
509 | /* Discard any excess data the server gave us */ | |
510 | iov_iter_discard(&call->iter, READ, req->actual_len - req->len); | |
511 | call->unmarshall = 3; | |
e690c9e3 GS |
512 | |
513 | /* Fall through */ | |
30062bd1 DH |
514 | case 3: |
515 | _debug("extract discard %zu/%llu", | |
516 | iov_iter_count(&call->iter), req->actual_len - req->len); | |
517 | ||
518 | ret = afs_extract_data(call, true); | |
519 | if (ret < 0) | |
520 | return ret; | |
521 | ||
522 | no_more_data: | |
523 | call->unmarshall = 4; | |
524 | afs_extract_to_buf(call, | |
525 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
526 | sizeof(struct yfs_xdr_YFSCallBack) + | |
527 | sizeof(struct yfs_xdr_YFSVolSync)); | |
528 | ||
e690c9e3 | 529 | /* Fall through - and extract the metadata */ |
30062bd1 DH |
530 | case 4: |
531 | ret = afs_extract_data(call, false); | |
532 | if (ret < 0) | |
533 | return ret; | |
534 | ||
535 | bp = call->buffer; | |
a58823ac | 536 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
537 | if (ret < 0) |
538 | return ret; | |
a58823ac | 539 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
ffba718e | 540 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 | 541 | |
a58823ac DH |
542 | req->data_version = call->out_scb->status.data_version; |
543 | req->file_size = call->out_scb->status.size; | |
544 | ||
30062bd1 DH |
545 | call->unmarshall++; |
546 | ||
e690c9e3 | 547 | /* Fall through */ |
30062bd1 DH |
548 | case 5: |
549 | break; | |
550 | } | |
551 | ||
552 | for (; req->index < req->nr_pages; req->index++) { | |
553 | if (req->offset < PAGE_SIZE) | |
554 | zero_user_segment(req->pages[req->index], | |
555 | req->offset, PAGE_SIZE); | |
556 | if (req->page_done) | |
a58823ac | 557 | req->page_done(req); |
30062bd1 DH |
558 | req->offset = 0; |
559 | } | |
560 | ||
561 | _leave(" = 0 [done]"); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static void yfs_fetch_data_destructor(struct afs_call *call) | |
566 | { | |
ffba718e | 567 | afs_put_read(call->read_request); |
30062bd1 DH |
568 | afs_flat_call_destructor(call); |
569 | } | |
570 | ||
571 | /* | |
572 | * YFS.FetchData64 operation type | |
573 | */ | |
574 | static const struct afs_call_type yfs_RXYFSFetchData64 = { | |
575 | .name = "YFS.FetchData64", | |
576 | .op = yfs_FS_FetchData64, | |
577 | .deliver = yfs_deliver_fs_fetch_data64, | |
578 | .destructor = yfs_fetch_data_destructor, | |
579 | }; | |
580 | ||
581 | /* | |
582 | * Fetch data from a file. | |
583 | */ | |
a58823ac DH |
584 | int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb, |
585 | struct afs_read *req) | |
30062bd1 DH |
586 | { |
587 | struct afs_vnode *vnode = fc->vnode; | |
588 | struct afs_call *call; | |
589 | struct afs_net *net = afs_v2net(vnode); | |
590 | __be32 *bp; | |
591 | ||
592 | _enter(",%x,{%llx:%llu},%llx,%llx", | |
593 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode, | |
594 | req->pos, req->len); | |
595 | ||
596 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64, | |
597 | sizeof(__be32) * 2 + | |
598 | sizeof(struct yfs_xdr_YFSFid) + | |
599 | sizeof(struct yfs_xdr_u64) * 2, | |
600 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
601 | sizeof(struct yfs_xdr_YFSCallBack) + | |
602 | sizeof(struct yfs_xdr_YFSVolSync)); | |
603 | if (!call) | |
604 | return -ENOMEM; | |
605 | ||
606 | call->key = fc->key; | |
a58823ac | 607 | call->out_scb = scb; |
ffba718e DH |
608 | call->out_volsync = NULL; |
609 | call->read_request = req; | |
30062bd1 DH |
610 | |
611 | /* marshall the parameters */ | |
612 | bp = call->request; | |
613 | bp = xdr_encode_u32(bp, YFSFETCHDATA64); | |
614 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
615 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
616 | bp = xdr_encode_u64(bp, req->pos); | |
617 | bp = xdr_encode_u64(bp, req->len); | |
618 | yfs_check_req(call, bp); | |
619 | ||
620 | refcount_inc(&req->usage); | |
30062bd1 DH |
621 | afs_use_fs_server(call, fc->cbi); |
622 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 623 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
624 | afs_make_call(&fc->ac, call, GFP_NOFS); |
625 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
626 | } |
627 | ||
628 | /* | |
629 | * Deliver reply data for YFS.CreateFile or YFS.MakeDir. | |
630 | */ | |
631 | static int yfs_deliver_fs_create_vnode(struct afs_call *call) | |
632 | { | |
30062bd1 DH |
633 | const __be32 *bp; |
634 | int ret; | |
635 | ||
636 | _enter("{%u}", call->unmarshall); | |
637 | ||
638 | ret = afs_transfer_reply(call); | |
639 | if (ret < 0) | |
640 | return ret; | |
641 | ||
642 | /* unmarshall the reply once we've received all of it */ | |
643 | bp = call->buffer; | |
ffba718e | 644 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 645 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
646 | if (ret < 0) |
647 | return ret; | |
a58823ac | 648 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
649 | if (ret < 0) |
650 | return ret; | |
a58823ac DH |
651 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
652 | xdr_decode_YFSVolSync(&bp, call->out_volsync); | |
30062bd1 DH |
653 | |
654 | _leave(" = 0 [done]"); | |
655 | return 0; | |
656 | } | |
657 | ||
658 | /* | |
659 | * FS.CreateFile and FS.MakeDir operation type | |
660 | */ | |
661 | static const struct afs_call_type afs_RXFSCreateFile = { | |
662 | .name = "YFS.CreateFile", | |
663 | .op = yfs_FS_CreateFile, | |
664 | .deliver = yfs_deliver_fs_create_vnode, | |
665 | .destructor = afs_flat_call_destructor, | |
666 | }; | |
667 | ||
668 | /* | |
669 | * Create a file. | |
670 | */ | |
671 | int yfs_fs_create_file(struct afs_fs_cursor *fc, | |
672 | const char *name, | |
673 | umode_t mode, | |
a58823ac | 674 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 675 | struct afs_fid *newfid, |
a58823ac | 676 | struct afs_status_cb *new_scb) |
30062bd1 | 677 | { |
ffba718e | 678 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 679 | struct afs_call *call; |
ffba718e | 680 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
681 | size_t namesz, reqsz, rplsz; |
682 | __be32 *bp; | |
683 | ||
684 | _enter(""); | |
685 | ||
686 | namesz = strlen(name); | |
687 | reqsz = (sizeof(__be32) + | |
688 | sizeof(__be32) + | |
689 | sizeof(struct yfs_xdr_YFSFid) + | |
690 | xdr_strlen(namesz) + | |
691 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
692 | sizeof(__be32)); | |
693 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
694 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
695 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
696 | sizeof(struct yfs_xdr_YFSCallBack) + | |
697 | sizeof(struct yfs_xdr_YFSVolSync)); | |
698 | ||
699 | call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz); | |
700 | if (!call) | |
701 | return -ENOMEM; | |
702 | ||
703 | call->key = fc->key; | |
a58823ac | 704 | call->out_dir_scb = dvnode_scb; |
ffba718e | 705 | call->out_fid = newfid; |
a58823ac | 706 | call->out_scb = new_scb; |
30062bd1 DH |
707 | |
708 | /* marshall the parameters */ | |
709 | bp = call->request; | |
710 | bp = xdr_encode_u32(bp, YFSCREATEFILE); | |
711 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 712 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
713 | bp = xdr_encode_string(bp, name, namesz); |
714 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
5edc22cc | 715 | bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */ |
30062bd1 DH |
716 | yfs_check_req(call, bp); |
717 | ||
718 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 719 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 720 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
721 | afs_make_call(&fc->ac, call, GFP_NOFS); |
722 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
723 | } |
724 | ||
725 | static const struct afs_call_type yfs_RXFSMakeDir = { | |
726 | .name = "YFS.MakeDir", | |
727 | .op = yfs_FS_MakeDir, | |
728 | .deliver = yfs_deliver_fs_create_vnode, | |
729 | .destructor = afs_flat_call_destructor, | |
730 | }; | |
731 | ||
732 | /* | |
733 | * Make a directory. | |
734 | */ | |
735 | int yfs_fs_make_dir(struct afs_fs_cursor *fc, | |
736 | const char *name, | |
737 | umode_t mode, | |
a58823ac | 738 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 739 | struct afs_fid *newfid, |
a58823ac | 740 | struct afs_status_cb *new_scb) |
30062bd1 | 741 | { |
ffba718e | 742 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 743 | struct afs_call *call; |
ffba718e | 744 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
745 | size_t namesz, reqsz, rplsz; |
746 | __be32 *bp; | |
747 | ||
748 | _enter(""); | |
749 | ||
750 | namesz = strlen(name); | |
751 | reqsz = (sizeof(__be32) + | |
752 | sizeof(struct yfs_xdr_RPCFlags) + | |
753 | sizeof(struct yfs_xdr_YFSFid) + | |
754 | xdr_strlen(namesz) + | |
755 | sizeof(struct yfs_xdr_YFSStoreStatus)); | |
756 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
757 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
758 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
759 | sizeof(struct yfs_xdr_YFSCallBack) + | |
760 | sizeof(struct yfs_xdr_YFSVolSync)); | |
761 | ||
762 | call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz); | |
763 | if (!call) | |
764 | return -ENOMEM; | |
765 | ||
766 | call->key = fc->key; | |
a58823ac | 767 | call->out_dir_scb = dvnode_scb; |
ffba718e | 768 | call->out_fid = newfid; |
a58823ac | 769 | call->out_scb = new_scb; |
30062bd1 DH |
770 | |
771 | /* marshall the parameters */ | |
772 | bp = call->request; | |
773 | bp = xdr_encode_u32(bp, YFSMAKEDIR); | |
774 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 775 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
776 | bp = xdr_encode_string(bp, name, namesz); |
777 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
778 | yfs_check_req(call, bp); | |
779 | ||
780 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 781 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 782 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
783 | afs_make_call(&fc->ac, call, GFP_NOFS); |
784 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
785 | } |
786 | ||
787 | /* | |
788 | * Deliver reply data to a YFS.RemoveFile2 operation. | |
789 | */ | |
790 | static int yfs_deliver_fs_remove_file2(struct afs_call *call) | |
791 | { | |
30062bd1 DH |
792 | struct afs_fid fid; |
793 | const __be32 *bp; | |
794 | int ret; | |
795 | ||
796 | _enter("{%u}", call->unmarshall); | |
797 | ||
798 | ret = afs_transfer_reply(call); | |
799 | if (ret < 0) | |
800 | return ret; | |
801 | ||
30062bd1 | 802 | bp = call->buffer; |
a58823ac | 803 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
804 | if (ret < 0) |
805 | return ret; | |
806 | ||
807 | xdr_decode_YFSFid(&bp, &fid); | |
a58823ac | 808 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
809 | if (ret < 0) |
810 | return ret; | |
811 | /* Was deleted if vnode->status.abort_code == VNOVNODE. */ | |
812 | ||
a58823ac | 813 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
814 | return 0; |
815 | } | |
816 | ||
817 | /* | |
818 | * YFS.RemoveFile2 operation type. | |
819 | */ | |
820 | static const struct afs_call_type yfs_RXYFSRemoveFile2 = { | |
821 | .name = "YFS.RemoveFile2", | |
822 | .op = yfs_FS_RemoveFile2, | |
823 | .deliver = yfs_deliver_fs_remove_file2, | |
824 | .destructor = afs_flat_call_destructor, | |
825 | }; | |
826 | ||
827 | /* | |
828 | * Remove a file and retrieve new file status. | |
829 | */ | |
830 | int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
831 | const char *name, struct afs_status_cb *dvnode_scb, |
832 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
833 | { |
834 | struct afs_vnode *dvnode = fc->vnode; | |
835 | struct afs_call *call; | |
836 | struct afs_net *net = afs_v2net(dvnode); | |
837 | size_t namesz; | |
838 | __be32 *bp; | |
839 | ||
840 | _enter(""); | |
841 | ||
842 | namesz = strlen(name); | |
843 | ||
844 | call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2, | |
845 | sizeof(__be32) + | |
846 | sizeof(struct yfs_xdr_RPCFlags) + | |
847 | sizeof(struct yfs_xdr_YFSFid) + | |
848 | xdr_strlen(namesz), | |
849 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
850 | sizeof(struct yfs_xdr_YFSFid) + | |
851 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
852 | sizeof(struct yfs_xdr_YFSVolSync)); | |
853 | if (!call) | |
854 | return -ENOMEM; | |
855 | ||
856 | call->key = fc->key; | |
a58823ac DH |
857 | call->out_dir_scb = dvnode_scb; |
858 | call->out_scb = vnode_scb; | |
30062bd1 DH |
859 | |
860 | /* marshall the parameters */ | |
861 | bp = call->request; | |
862 | bp = xdr_encode_u32(bp, YFSREMOVEFILE2); | |
863 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
864 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
865 | bp = xdr_encode_string(bp, name, namesz); | |
866 | yfs_check_req(call, bp); | |
867 | ||
868 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 869 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 870 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
871 | afs_make_call(&fc->ac, call, GFP_NOFS); |
872 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
873 | } |
874 | ||
875 | /* | |
876 | * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation. | |
877 | */ | |
878 | static int yfs_deliver_fs_remove(struct afs_call *call) | |
879 | { | |
30062bd1 DH |
880 | const __be32 *bp; |
881 | int ret; | |
882 | ||
883 | _enter("{%u}", call->unmarshall); | |
884 | ||
885 | ret = afs_transfer_reply(call); | |
886 | if (ret < 0) | |
887 | return ret; | |
888 | ||
30062bd1 | 889 | bp = call->buffer; |
a58823ac | 890 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
891 | if (ret < 0) |
892 | return ret; | |
893 | ||
a58823ac | 894 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
895 | return 0; |
896 | } | |
897 | ||
898 | /* | |
899 | * FS.RemoveDir and FS.RemoveFile operation types. | |
900 | */ | |
901 | static const struct afs_call_type yfs_RXYFSRemoveFile = { | |
902 | .name = "YFS.RemoveFile", | |
903 | .op = yfs_FS_RemoveFile, | |
904 | .deliver = yfs_deliver_fs_remove, | |
905 | .destructor = afs_flat_call_destructor, | |
906 | }; | |
907 | ||
908 | static const struct afs_call_type yfs_RXYFSRemoveDir = { | |
909 | .name = "YFS.RemoveDir", | |
910 | .op = yfs_FS_RemoveDir, | |
911 | .deliver = yfs_deliver_fs_remove, | |
912 | .destructor = afs_flat_call_destructor, | |
913 | }; | |
914 | ||
915 | /* | |
916 | * remove a file or directory | |
917 | */ | |
918 | int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
919 | const char *name, bool isdir, |
920 | struct afs_status_cb *dvnode_scb) | |
30062bd1 DH |
921 | { |
922 | struct afs_vnode *dvnode = fc->vnode; | |
923 | struct afs_call *call; | |
924 | struct afs_net *net = afs_v2net(dvnode); | |
925 | size_t namesz; | |
926 | __be32 *bp; | |
927 | ||
928 | _enter(""); | |
929 | ||
930 | namesz = strlen(name); | |
931 | call = afs_alloc_flat_call( | |
932 | net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile, | |
933 | sizeof(__be32) + | |
934 | sizeof(struct yfs_xdr_RPCFlags) + | |
935 | sizeof(struct yfs_xdr_YFSFid) + | |
936 | xdr_strlen(namesz), | |
937 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
938 | sizeof(struct yfs_xdr_YFSVolSync)); | |
939 | if (!call) | |
940 | return -ENOMEM; | |
941 | ||
942 | call->key = fc->key; | |
a58823ac | 943 | call->out_dir_scb = dvnode_scb; |
30062bd1 DH |
944 | |
945 | /* marshall the parameters */ | |
946 | bp = call->request; | |
947 | bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE); | |
948 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
949 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
950 | bp = xdr_encode_string(bp, name, namesz); | |
951 | yfs_check_req(call, bp); | |
952 | ||
953 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 954 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 955 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
956 | afs_make_call(&fc->ac, call, GFP_NOFS); |
957 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
958 | } |
959 | ||
960 | /* | |
961 | * Deliver reply data to a YFS.Link operation. | |
962 | */ | |
963 | static int yfs_deliver_fs_link(struct afs_call *call) | |
964 | { | |
30062bd1 DH |
965 | const __be32 *bp; |
966 | int ret; | |
967 | ||
968 | _enter("{%u}", call->unmarshall); | |
969 | ||
970 | ret = afs_transfer_reply(call); | |
971 | if (ret < 0) | |
972 | return ret; | |
973 | ||
30062bd1 | 974 | bp = call->buffer; |
a58823ac | 975 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
976 | if (ret < 0) |
977 | return ret; | |
a58823ac | 978 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
979 | if (ret < 0) |
980 | return ret; | |
a58823ac | 981 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
982 | _leave(" = 0 [done]"); |
983 | return 0; | |
984 | } | |
985 | ||
986 | /* | |
987 | * YFS.Link operation type. | |
988 | */ | |
989 | static const struct afs_call_type yfs_RXYFSLink = { | |
990 | .name = "YFS.Link", | |
991 | .op = yfs_FS_Link, | |
992 | .deliver = yfs_deliver_fs_link, | |
993 | .destructor = afs_flat_call_destructor, | |
994 | }; | |
995 | ||
996 | /* | |
997 | * Make a hard link. | |
998 | */ | |
999 | int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
1000 | const char *name, |
1001 | struct afs_status_cb *dvnode_scb, | |
1002 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
1003 | { |
1004 | struct afs_vnode *dvnode = fc->vnode; | |
1005 | struct afs_call *call; | |
1006 | struct afs_net *net = afs_v2net(vnode); | |
1007 | size_t namesz; | |
1008 | __be32 *bp; | |
1009 | ||
1010 | _enter(""); | |
1011 | ||
1012 | namesz = strlen(name); | |
1013 | call = afs_alloc_flat_call(net, &yfs_RXYFSLink, | |
1014 | sizeof(__be32) + | |
1015 | sizeof(struct yfs_xdr_RPCFlags) + | |
1016 | sizeof(struct yfs_xdr_YFSFid) + | |
1017 | xdr_strlen(namesz) + | |
1018 | sizeof(struct yfs_xdr_YFSFid), | |
1019 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1020 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1021 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1022 | if (!call) | |
1023 | return -ENOMEM; | |
1024 | ||
1025 | call->key = fc->key; | |
a58823ac DH |
1026 | call->out_dir_scb = dvnode_scb; |
1027 | call->out_scb = vnode_scb; | |
30062bd1 DH |
1028 | |
1029 | /* marshall the parameters */ | |
1030 | bp = call->request; | |
1031 | bp = xdr_encode_u32(bp, YFSLINK); | |
1032 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1033 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1034 | bp = xdr_encode_string(bp, name, namesz); | |
1035 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1036 | yfs_check_req(call, bp); | |
1037 | ||
1038 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1039 | trace_afs_make_fs_call1(call, &vnode->fid, name); |
20b8391f | 1040 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1041 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1042 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1043 | } |
1044 | ||
1045 | /* | |
1046 | * Deliver reply data to a YFS.Symlink operation. | |
1047 | */ | |
1048 | static int yfs_deliver_fs_symlink(struct afs_call *call) | |
1049 | { | |
30062bd1 DH |
1050 | const __be32 *bp; |
1051 | int ret; | |
1052 | ||
1053 | _enter("{%u}", call->unmarshall); | |
1054 | ||
1055 | ret = afs_transfer_reply(call); | |
1056 | if (ret < 0) | |
1057 | return ret; | |
1058 | ||
1059 | /* unmarshall the reply once we've received all of it */ | |
1060 | bp = call->buffer; | |
ffba718e | 1061 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 1062 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
1063 | if (ret < 0) |
1064 | return ret; | |
a58823ac | 1065 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1066 | if (ret < 0) |
1067 | return ret; | |
a58823ac | 1068 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1069 | |
1070 | _leave(" = 0 [done]"); | |
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | /* | |
1075 | * YFS.Symlink operation type | |
1076 | */ | |
1077 | static const struct afs_call_type yfs_RXYFSSymlink = { | |
1078 | .name = "YFS.Symlink", | |
1079 | .op = yfs_FS_Symlink, | |
1080 | .deliver = yfs_deliver_fs_symlink, | |
1081 | .destructor = afs_flat_call_destructor, | |
1082 | }; | |
1083 | ||
1084 | /* | |
1085 | * Create a symbolic link. | |
1086 | */ | |
1087 | int yfs_fs_symlink(struct afs_fs_cursor *fc, | |
1088 | const char *name, | |
1089 | const char *contents, | |
a58823ac | 1090 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 1091 | struct afs_fid *newfid, |
a58823ac | 1092 | struct afs_status_cb *vnode_scb) |
30062bd1 DH |
1093 | { |
1094 | struct afs_vnode *dvnode = fc->vnode; | |
1095 | struct afs_call *call; | |
1096 | struct afs_net *net = afs_v2net(dvnode); | |
1097 | size_t namesz, contents_sz; | |
1098 | __be32 *bp; | |
1099 | ||
1100 | _enter(""); | |
1101 | ||
1102 | namesz = strlen(name); | |
1103 | contents_sz = strlen(contents); | |
1104 | call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink, | |
1105 | sizeof(__be32) + | |
1106 | sizeof(struct yfs_xdr_RPCFlags) + | |
1107 | sizeof(struct yfs_xdr_YFSFid) + | |
1108 | xdr_strlen(namesz) + | |
1109 | xdr_strlen(contents_sz) + | |
1110 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1111 | sizeof(struct yfs_xdr_YFSFid) + | |
1112 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1113 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1114 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1115 | if (!call) | |
1116 | return -ENOMEM; | |
1117 | ||
1118 | call->key = fc->key; | |
a58823ac | 1119 | call->out_dir_scb = dvnode_scb; |
ffba718e | 1120 | call->out_fid = newfid; |
a58823ac | 1121 | call->out_scb = vnode_scb; |
30062bd1 DH |
1122 | |
1123 | /* marshall the parameters */ | |
1124 | bp = call->request; | |
1125 | bp = xdr_encode_u32(bp, YFSSYMLINK); | |
1126 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1127 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1128 | bp = xdr_encode_string(bp, name, namesz); | |
1129 | bp = xdr_encode_string(bp, contents, contents_sz); | |
1130 | bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO); | |
1131 | yfs_check_req(call, bp); | |
1132 | ||
1133 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1134 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 1135 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1136 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1137 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1138 | } |
1139 | ||
1140 | /* | |
1141 | * Deliver reply data to a YFS.Rename operation. | |
1142 | */ | |
1143 | static int yfs_deliver_fs_rename(struct afs_call *call) | |
1144 | { | |
30062bd1 DH |
1145 | const __be32 *bp; |
1146 | int ret; | |
1147 | ||
1148 | _enter("{%u}", call->unmarshall); | |
1149 | ||
1150 | ret = afs_transfer_reply(call); | |
1151 | if (ret < 0) | |
1152 | return ret; | |
1153 | ||
30062bd1 | 1154 | bp = call->buffer; |
a58823ac | 1155 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1156 | if (ret < 0) |
1157 | return ret; | |
a58823ac DH |
1158 | if (call->out_dir_scb != call->out_scb) { |
1159 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); | |
30062bd1 DH |
1160 | if (ret < 0) |
1161 | return ret; | |
1162 | } | |
1163 | ||
a58823ac | 1164 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1165 | _leave(" = 0 [done]"); |
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | /* | |
1170 | * YFS.Rename operation type | |
1171 | */ | |
1172 | static const struct afs_call_type yfs_RXYFSRename = { | |
1173 | .name = "FS.Rename", | |
1174 | .op = yfs_FS_Rename, | |
1175 | .deliver = yfs_deliver_fs_rename, | |
1176 | .destructor = afs_flat_call_destructor, | |
1177 | }; | |
1178 | ||
1179 | /* | |
1180 | * Rename a file or directory. | |
1181 | */ | |
1182 | int yfs_fs_rename(struct afs_fs_cursor *fc, | |
1183 | const char *orig_name, | |
1184 | struct afs_vnode *new_dvnode, | |
1185 | const char *new_name, | |
a58823ac DH |
1186 | struct afs_status_cb *orig_dvnode_scb, |
1187 | struct afs_status_cb *new_dvnode_scb) | |
30062bd1 DH |
1188 | { |
1189 | struct afs_vnode *orig_dvnode = fc->vnode; | |
1190 | struct afs_call *call; | |
1191 | struct afs_net *net = afs_v2net(orig_dvnode); | |
1192 | size_t o_namesz, n_namesz; | |
1193 | __be32 *bp; | |
1194 | ||
1195 | _enter(""); | |
1196 | ||
1197 | o_namesz = strlen(orig_name); | |
1198 | n_namesz = strlen(new_name); | |
1199 | call = afs_alloc_flat_call(net, &yfs_RXYFSRename, | |
1200 | sizeof(__be32) + | |
1201 | sizeof(struct yfs_xdr_RPCFlags) + | |
1202 | sizeof(struct yfs_xdr_YFSFid) + | |
1203 | xdr_strlen(o_namesz) + | |
1204 | sizeof(struct yfs_xdr_YFSFid) + | |
1205 | xdr_strlen(n_namesz), | |
1206 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1207 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1208 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1209 | if (!call) | |
1210 | return -ENOMEM; | |
1211 | ||
1212 | call->key = fc->key; | |
a58823ac DH |
1213 | call->out_dir_scb = orig_dvnode_scb; |
1214 | call->out_scb = new_dvnode_scb; | |
30062bd1 DH |
1215 | |
1216 | /* marshall the parameters */ | |
1217 | bp = call->request; | |
1218 | bp = xdr_encode_u32(bp, YFSRENAME); | |
1219 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1220 | bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid); | |
1221 | bp = xdr_encode_string(bp, orig_name, o_namesz); | |
1222 | bp = xdr_encode_YFSFid(bp, &new_dvnode->fid); | |
1223 | bp = xdr_encode_string(bp, new_name, n_namesz); | |
1224 | yfs_check_req(call, bp); | |
1225 | ||
1226 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1227 | trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name); |
20b8391f | 1228 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1229 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1230 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1231 | } |
1232 | ||
30062bd1 DH |
1233 | /* |
1234 | * YFS.StoreData64 operation type. | |
1235 | */ | |
1236 | static const struct afs_call_type yfs_RXYFSStoreData64 = { | |
1237 | .name = "YFS.StoreData64", | |
1238 | .op = yfs_FS_StoreData64, | |
a58823ac | 1239 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1240 | .destructor = afs_flat_call_destructor, |
1241 | }; | |
1242 | ||
1243 | /* | |
1244 | * Store a set of pages to a large file. | |
1245 | */ | |
1246 | int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, | |
1247 | pgoff_t first, pgoff_t last, | |
a58823ac DH |
1248 | unsigned offset, unsigned to, |
1249 | struct afs_status_cb *scb) | |
30062bd1 DH |
1250 | { |
1251 | struct afs_vnode *vnode = fc->vnode; | |
1252 | struct afs_call *call; | |
1253 | struct afs_net *net = afs_v2net(vnode); | |
1254 | loff_t size, pos, i_size; | |
1255 | __be32 *bp; | |
1256 | ||
1257 | _enter(",%x,{%llx:%llu},,", | |
1258 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1259 | ||
1260 | size = (loff_t)to - (loff_t)offset; | |
1261 | if (first != last) | |
1262 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1263 | pos = (loff_t)first << PAGE_SHIFT; | |
1264 | pos += offset; | |
1265 | ||
1266 | i_size = i_size_read(&vnode->vfs_inode); | |
1267 | if (pos + size > i_size) | |
1268 | i_size = size + pos; | |
1269 | ||
1270 | _debug("size %llx, at %llx, i_size %llx", | |
1271 | (unsigned long long)size, (unsigned long long)pos, | |
1272 | (unsigned long long)i_size); | |
1273 | ||
1274 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64, | |
1275 | sizeof(__be32) + | |
1276 | sizeof(__be32) + | |
1277 | sizeof(struct yfs_xdr_YFSFid) + | |
1278 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
1279 | sizeof(struct yfs_xdr_u64) * 3, | |
1280 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1281 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1282 | if (!call) | |
1283 | return -ENOMEM; | |
1284 | ||
1285 | call->key = fc->key; | |
1286 | call->mapping = mapping; | |
30062bd1 DH |
1287 | call->first = first; |
1288 | call->last = last; | |
1289 | call->first_offset = offset; | |
1290 | call->last_to = to; | |
1291 | call->send_pages = true; | |
a58823ac | 1292 | call->out_scb = scb; |
30062bd1 DH |
1293 | |
1294 | /* marshall the parameters */ | |
1295 | bp = call->request; | |
1296 | bp = xdr_encode_u32(bp, YFSSTOREDATA64); | |
1297 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1298 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1299 | bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime); | |
1300 | bp = xdr_encode_u64(bp, pos); | |
1301 | bp = xdr_encode_u64(bp, size); | |
1302 | bp = xdr_encode_u64(bp, i_size); | |
1303 | yfs_check_req(call, bp); | |
1304 | ||
1305 | afs_use_fs_server(call, fc->cbi); | |
1306 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1307 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1308 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1309 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1310 | } |
1311 | ||
30062bd1 DH |
1312 | /* |
1313 | * YFS.StoreStatus operation type | |
1314 | */ | |
1315 | static const struct afs_call_type yfs_RXYFSStoreStatus = { | |
1316 | .name = "YFS.StoreStatus", | |
1317 | .op = yfs_FS_StoreStatus, | |
a58823ac | 1318 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1319 | .destructor = afs_flat_call_destructor, |
1320 | }; | |
1321 | ||
1322 | static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = { | |
1323 | .name = "YFS.StoreData64", | |
1324 | .op = yfs_FS_StoreData64, | |
a58823ac | 1325 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1326 | .destructor = afs_flat_call_destructor, |
1327 | }; | |
1328 | ||
1329 | /* | |
1330 | * Set the attributes on a file, using YFS.StoreData64 rather than | |
1331 | * YFS.StoreStatus so as to alter the file size also. | |
1332 | */ | |
a58823ac DH |
1333 | static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr, |
1334 | struct afs_status_cb *scb) | |
30062bd1 DH |
1335 | { |
1336 | struct afs_vnode *vnode = fc->vnode; | |
1337 | struct afs_call *call; | |
1338 | struct afs_net *net = afs_v2net(vnode); | |
1339 | __be32 *bp; | |
1340 | ||
1341 | _enter(",%x,{%llx:%llu},,", | |
1342 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1343 | ||
1344 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status, | |
1345 | sizeof(__be32) * 2 + | |
1346 | sizeof(struct yfs_xdr_YFSFid) + | |
1347 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
1348 | sizeof(struct yfs_xdr_u64) * 3, | |
1349 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1350 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1351 | if (!call) | |
1352 | return -ENOMEM; | |
1353 | ||
1354 | call->key = fc->key; | |
a58823ac | 1355 | call->out_scb = scb; |
30062bd1 DH |
1356 | |
1357 | /* marshall the parameters */ | |
1358 | bp = call->request; | |
1359 | bp = xdr_encode_u32(bp, YFSSTOREDATA64); | |
1360 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1361 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1362 | bp = xdr_encode_YFS_StoreStatus(bp, attr); | |
8c7ae38d | 1363 | bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */ |
30062bd1 DH |
1364 | bp = xdr_encode_u64(bp, 0); /* size of write */ |
1365 | bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */ | |
1366 | yfs_check_req(call, bp); | |
1367 | ||
1368 | afs_use_fs_server(call, fc->cbi); | |
1369 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1370 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1371 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1372 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1373 | } |
1374 | ||
1375 | /* | |
1376 | * Set the attributes on a file, using YFS.StoreData64 if there's a change in | |
1377 | * file size, and YFS.StoreStatus otherwise. | |
1378 | */ | |
a58823ac DH |
1379 | int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr, |
1380 | struct afs_status_cb *scb) | |
30062bd1 DH |
1381 | { |
1382 | struct afs_vnode *vnode = fc->vnode; | |
1383 | struct afs_call *call; | |
1384 | struct afs_net *net = afs_v2net(vnode); | |
1385 | __be32 *bp; | |
1386 | ||
1387 | if (attr->ia_valid & ATTR_SIZE) | |
a58823ac | 1388 | return yfs_fs_setattr_size(fc, attr, scb); |
30062bd1 DH |
1389 | |
1390 | _enter(",%x,{%llx:%llu},,", | |
1391 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1392 | ||
1393 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus, | |
1394 | sizeof(__be32) * 2 + | |
1395 | sizeof(struct yfs_xdr_YFSFid) + | |
1396 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1397 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1398 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1399 | if (!call) | |
1400 | return -ENOMEM; | |
1401 | ||
1402 | call->key = fc->key; | |
a58823ac | 1403 | call->out_scb = scb; |
30062bd1 DH |
1404 | |
1405 | /* marshall the parameters */ | |
1406 | bp = call->request; | |
1407 | bp = xdr_encode_u32(bp, YFSSTORESTATUS); | |
1408 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1409 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1410 | bp = xdr_encode_YFS_StoreStatus(bp, attr); | |
1411 | yfs_check_req(call, bp); | |
1412 | ||
1413 | afs_use_fs_server(call, fc->cbi); | |
1414 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1415 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1416 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1417 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1418 | } |
1419 | ||
1420 | /* | |
1421 | * Deliver reply data to a YFS.GetVolumeStatus operation. | |
1422 | */ | |
1423 | static int yfs_deliver_fs_get_volume_status(struct afs_call *call) | |
1424 | { | |
1425 | const __be32 *bp; | |
1426 | char *p; | |
1427 | u32 size; | |
1428 | int ret; | |
1429 | ||
1430 | _enter("{%u}", call->unmarshall); | |
1431 | ||
1432 | switch (call->unmarshall) { | |
1433 | case 0: | |
1434 | call->unmarshall++; | |
1435 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus)); | |
1436 | ||
e690c9e3 | 1437 | /* Fall through - and extract the returned status record */ |
30062bd1 DH |
1438 | case 1: |
1439 | _debug("extract status"); | |
1440 | ret = afs_extract_data(call, true); | |
1441 | if (ret < 0) | |
1442 | return ret; | |
1443 | ||
1444 | bp = call->buffer; | |
ffba718e | 1445 | xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus); |
30062bd1 DH |
1446 | call->unmarshall++; |
1447 | afs_extract_to_tmp(call); | |
1448 | ||
e690c9e3 | 1449 | /* Fall through - and extract the volume name length */ |
30062bd1 DH |
1450 | case 2: |
1451 | ret = afs_extract_data(call, true); | |
1452 | if (ret < 0) | |
1453 | return ret; | |
1454 | ||
1455 | call->count = ntohl(call->tmp); | |
1456 | _debug("volname length: %u", call->count); | |
1457 | if (call->count >= AFSNAMEMAX) | |
1458 | return afs_protocol_error(call, -EBADMSG, | |
1459 | afs_eproto_volname_len); | |
1460 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1461 | afs_extract_to_buf(call, size); |
30062bd1 DH |
1462 | call->unmarshall++; |
1463 | ||
e690c9e3 | 1464 | /* Fall through - and extract the volume name */ |
30062bd1 DH |
1465 | case 3: |
1466 | _debug("extract volname"); | |
1467 | ret = afs_extract_data(call, true); | |
1468 | if (ret < 0) | |
1469 | return ret; | |
1470 | ||
ffba718e | 1471 | p = call->buffer; |
30062bd1 DH |
1472 | p[call->count] = 0; |
1473 | _debug("volname '%s'", p); | |
1474 | afs_extract_to_tmp(call); | |
1475 | call->unmarshall++; | |
1476 | ||
e690c9e3 | 1477 | /* Fall through - and extract the offline message length */ |
30062bd1 DH |
1478 | case 4: |
1479 | ret = afs_extract_data(call, true); | |
1480 | if (ret < 0) | |
1481 | return ret; | |
1482 | ||
1483 | call->count = ntohl(call->tmp); | |
1484 | _debug("offline msg length: %u", call->count); | |
1485 | if (call->count >= AFSNAMEMAX) | |
1486 | return afs_protocol_error(call, -EBADMSG, | |
1487 | afs_eproto_offline_msg_len); | |
1488 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1489 | afs_extract_to_buf(call, size); |
30062bd1 DH |
1490 | call->unmarshall++; |
1491 | ||
e690c9e3 | 1492 | /* Fall through - and extract the offline message */ |
30062bd1 DH |
1493 | case 5: |
1494 | _debug("extract offline"); | |
1495 | ret = afs_extract_data(call, true); | |
1496 | if (ret < 0) | |
1497 | return ret; | |
1498 | ||
ffba718e | 1499 | p = call->buffer; |
30062bd1 DH |
1500 | p[call->count] = 0; |
1501 | _debug("offline '%s'", p); | |
1502 | ||
1503 | afs_extract_to_tmp(call); | |
1504 | call->unmarshall++; | |
1505 | ||
e690c9e3 | 1506 | /* Fall through - and extract the message of the day length */ |
30062bd1 DH |
1507 | case 6: |
1508 | ret = afs_extract_data(call, true); | |
1509 | if (ret < 0) | |
1510 | return ret; | |
1511 | ||
1512 | call->count = ntohl(call->tmp); | |
1513 | _debug("motd length: %u", call->count); | |
1514 | if (call->count >= AFSNAMEMAX) | |
1515 | return afs_protocol_error(call, -EBADMSG, | |
1516 | afs_eproto_motd_len); | |
1517 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1518 | afs_extract_to_buf(call, size); |
30062bd1 DH |
1519 | call->unmarshall++; |
1520 | ||
e690c9e3 | 1521 | /* Fall through - and extract the message of the day */ |
30062bd1 DH |
1522 | case 7: |
1523 | _debug("extract motd"); | |
1524 | ret = afs_extract_data(call, false); | |
1525 | if (ret < 0) | |
1526 | return ret; | |
1527 | ||
ffba718e | 1528 | p = call->buffer; |
30062bd1 DH |
1529 | p[call->count] = 0; |
1530 | _debug("motd '%s'", p); | |
1531 | ||
1532 | call->unmarshall++; | |
1533 | ||
e690c9e3 | 1534 | /* Fall through */ |
30062bd1 DH |
1535 | case 8: |
1536 | break; | |
1537 | } | |
1538 | ||
1539 | _leave(" = 0 [done]"); | |
1540 | return 0; | |
1541 | } | |
1542 | ||
30062bd1 DH |
1543 | /* |
1544 | * YFS.GetVolumeStatus operation type | |
1545 | */ | |
1546 | static const struct afs_call_type yfs_RXYFSGetVolumeStatus = { | |
1547 | .name = "YFS.GetVolumeStatus", | |
1548 | .op = yfs_FS_GetVolumeStatus, | |
1549 | .deliver = yfs_deliver_fs_get_volume_status, | |
ffba718e | 1550 | .destructor = afs_flat_call_destructor, |
30062bd1 DH |
1551 | }; |
1552 | ||
1553 | /* | |
1554 | * fetch the status of a volume | |
1555 | */ | |
1556 | int yfs_fs_get_volume_status(struct afs_fs_cursor *fc, | |
1557 | struct afs_volume_status *vs) | |
1558 | { | |
1559 | struct afs_vnode *vnode = fc->vnode; | |
1560 | struct afs_call *call; | |
1561 | struct afs_net *net = afs_v2net(vnode); | |
1562 | __be32 *bp; | |
30062bd1 DH |
1563 | |
1564 | _enter(""); | |
1565 | ||
30062bd1 DH |
1566 | call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus, |
1567 | sizeof(__be32) * 2 + | |
1568 | sizeof(struct yfs_xdr_u64), | |
ffba718e DH |
1569 | max_t(size_t, |
1570 | sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + | |
1571 | sizeof(__be32), | |
1572 | AFSOPAQUEMAX + 1)); | |
1573 | if (!call) | |
30062bd1 | 1574 | return -ENOMEM; |
30062bd1 DH |
1575 | |
1576 | call->key = fc->key; | |
ffba718e | 1577 | call->out_volstatus = vs; |
30062bd1 DH |
1578 | |
1579 | /* marshall the parameters */ | |
1580 | bp = call->request; | |
1581 | bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS); | |
1582 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1583 | bp = xdr_encode_u64(bp, vnode->fid.vid); | |
1584 | yfs_check_req(call, bp); | |
1585 | ||
1586 | afs_use_fs_server(call, fc->cbi); | |
1587 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1588 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1589 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1590 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1591 | } |
1592 | ||
30062bd1 DH |
1593 | /* |
1594 | * YFS.SetLock operation type | |
1595 | */ | |
1596 | static const struct afs_call_type yfs_RXYFSSetLock = { | |
1597 | .name = "YFS.SetLock", | |
1598 | .op = yfs_FS_SetLock, | |
f5e45463 | 1599 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1600 | .done = afs_lock_op_done, |
30062bd1 DH |
1601 | .destructor = afs_flat_call_destructor, |
1602 | }; | |
1603 | ||
1604 | /* | |
1605 | * YFS.ExtendLock operation type | |
1606 | */ | |
1607 | static const struct afs_call_type yfs_RXYFSExtendLock = { | |
1608 | .name = "YFS.ExtendLock", | |
1609 | .op = yfs_FS_ExtendLock, | |
f5e45463 | 1610 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1611 | .done = afs_lock_op_done, |
30062bd1 DH |
1612 | .destructor = afs_flat_call_destructor, |
1613 | }; | |
1614 | ||
1615 | /* | |
1616 | * YFS.ReleaseLock operation type | |
1617 | */ | |
1618 | static const struct afs_call_type yfs_RXYFSReleaseLock = { | |
1619 | .name = "YFS.ReleaseLock", | |
1620 | .op = yfs_FS_ReleaseLock, | |
f5e45463 | 1621 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1622 | .destructor = afs_flat_call_destructor, |
1623 | }; | |
1624 | ||
1625 | /* | |
1626 | * Set a lock on a file | |
1627 | */ | |
a58823ac DH |
1628 | int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type, |
1629 | struct afs_status_cb *scb) | |
30062bd1 DH |
1630 | { |
1631 | struct afs_vnode *vnode = fc->vnode; | |
1632 | struct afs_call *call; | |
1633 | struct afs_net *net = afs_v2net(vnode); | |
1634 | __be32 *bp; | |
1635 | ||
1636 | _enter(""); | |
1637 | ||
1638 | call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock, | |
1639 | sizeof(__be32) * 2 + | |
1640 | sizeof(struct yfs_xdr_YFSFid) + | |
1641 | sizeof(__be32), | |
1642 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1643 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1644 | if (!call) | |
1645 | return -ENOMEM; | |
1646 | ||
1647 | call->key = fc->key; | |
a58823ac DH |
1648 | call->lvnode = vnode; |
1649 | call->out_scb = scb; | |
30062bd1 DH |
1650 | |
1651 | /* marshall the parameters */ | |
1652 | bp = call->request; | |
1653 | bp = xdr_encode_u32(bp, YFSSETLOCK); | |
1654 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1655 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1656 | bp = xdr_encode_u32(bp, type); | |
1657 | yfs_check_req(call, bp); | |
1658 | ||
1659 | afs_use_fs_server(call, fc->cbi); | |
6c6c1d63 | 1660 | trace_afs_make_fs_calli(call, &vnode->fid, type); |
20b8391f | 1661 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1662 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1663 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1664 | } |
1665 | ||
1666 | /* | |
1667 | * extend a lock on a file | |
1668 | */ | |
a58823ac | 1669 | int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1670 | { |
1671 | struct afs_vnode *vnode = fc->vnode; | |
1672 | struct afs_call *call; | |
1673 | struct afs_net *net = afs_v2net(vnode); | |
1674 | __be32 *bp; | |
1675 | ||
1676 | _enter(""); | |
1677 | ||
1678 | call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock, | |
1679 | sizeof(__be32) * 2 + | |
1680 | sizeof(struct yfs_xdr_YFSFid), | |
1681 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1682 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1683 | if (!call) | |
1684 | return -ENOMEM; | |
1685 | ||
1686 | call->key = fc->key; | |
a58823ac DH |
1687 | call->lvnode = vnode; |
1688 | call->out_scb = scb; | |
30062bd1 DH |
1689 | |
1690 | /* marshall the parameters */ | |
1691 | bp = call->request; | |
1692 | bp = xdr_encode_u32(bp, YFSEXTENDLOCK); | |
1693 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1694 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1695 | yfs_check_req(call, bp); | |
1696 | ||
1697 | afs_use_fs_server(call, fc->cbi); | |
1698 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1699 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1700 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1701 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1702 | } |
1703 | ||
1704 | /* | |
1705 | * release a lock on a file | |
1706 | */ | |
a58823ac | 1707 | int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1708 | { |
1709 | struct afs_vnode *vnode = fc->vnode; | |
1710 | struct afs_call *call; | |
1711 | struct afs_net *net = afs_v2net(vnode); | |
1712 | __be32 *bp; | |
1713 | ||
1714 | _enter(""); | |
1715 | ||
1716 | call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock, | |
1717 | sizeof(__be32) * 2 + | |
1718 | sizeof(struct yfs_xdr_YFSFid), | |
1719 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1720 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1721 | if (!call) | |
1722 | return -ENOMEM; | |
1723 | ||
1724 | call->key = fc->key; | |
a58823ac DH |
1725 | call->lvnode = vnode; |
1726 | call->out_scb = scb; | |
30062bd1 DH |
1727 | |
1728 | /* marshall the parameters */ | |
1729 | bp = call->request; | |
1730 | bp = xdr_encode_u32(bp, YFSRELEASELOCK); | |
1731 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1732 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1733 | yfs_check_req(call, bp); | |
1734 | ||
1735 | afs_use_fs_server(call, fc->cbi); | |
1736 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1737 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1738 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1739 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1740 | } |
1741 | ||
30062bd1 DH |
1742 | /* |
1743 | * YFS.FetchStatus operation type | |
1744 | */ | |
1745 | static const struct afs_call_type yfs_RXYFSFetchStatus = { | |
1746 | .name = "YFS.FetchStatus", | |
1747 | .op = yfs_FS_FetchStatus, | |
a58823ac | 1748 | .deliver = yfs_deliver_fs_status_cb_and_volsync, |
30062bd1 DH |
1749 | .destructor = afs_flat_call_destructor, |
1750 | }; | |
1751 | ||
1752 | /* | |
1753 | * Fetch the status information for a fid without needing a vnode handle. | |
1754 | */ | |
1755 | int yfs_fs_fetch_status(struct afs_fs_cursor *fc, | |
1756 | struct afs_net *net, | |
1757 | struct afs_fid *fid, | |
a58823ac | 1758 | struct afs_status_cb *scb, |
30062bd1 DH |
1759 | struct afs_volsync *volsync) |
1760 | { | |
1761 | struct afs_call *call; | |
1762 | __be32 *bp; | |
1763 | ||
1764 | _enter(",%x,{%llx:%llu},,", | |
1765 | key_serial(fc->key), fid->vid, fid->vnode); | |
1766 | ||
1767 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus, | |
1768 | sizeof(__be32) * 2 + | |
1769 | sizeof(struct yfs_xdr_YFSFid), | |
1770 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1771 | sizeof(struct yfs_xdr_YFSCallBack) + | |
1772 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1773 | if (!call) { | |
1774 | fc->ac.error = -ENOMEM; | |
1775 | return -ENOMEM; | |
1776 | } | |
1777 | ||
1778 | call->key = fc->key; | |
a58823ac | 1779 | call->out_scb = scb; |
ffba718e | 1780 | call->out_volsync = volsync; |
30062bd1 DH |
1781 | |
1782 | /* marshall the parameters */ | |
1783 | bp = call->request; | |
1784 | bp = xdr_encode_u32(bp, YFSFETCHSTATUS); | |
1785 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1786 | bp = xdr_encode_YFSFid(bp, fid); | |
1787 | yfs_check_req(call, bp); | |
1788 | ||
30062bd1 DH |
1789 | afs_use_fs_server(call, fc->cbi); |
1790 | trace_afs_make_fs_call(call, fid); | |
20b8391f | 1791 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1792 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1793 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1794 | } |
1795 | ||
1796 | /* | |
1797 | * Deliver reply data to an YFS.InlineBulkStatus call | |
1798 | */ | |
1799 | static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) | |
1800 | { | |
87182759 | 1801 | struct afs_status_cb *scb; |
30062bd1 DH |
1802 | const __be32 *bp; |
1803 | u32 tmp; | |
1804 | int ret; | |
1805 | ||
1806 | _enter("{%u}", call->unmarshall); | |
1807 | ||
1808 | switch (call->unmarshall) { | |
1809 | case 0: | |
1810 | afs_extract_to_tmp(call); | |
1811 | call->unmarshall++; | |
1812 | ||
1813 | /* Extract the file status count and array in two steps */ | |
e690c9e3 | 1814 | /* Fall through */ |
30062bd1 DH |
1815 | case 1: |
1816 | _debug("extract status count"); | |
1817 | ret = afs_extract_data(call, true); | |
1818 | if (ret < 0) | |
1819 | return ret; | |
1820 | ||
1821 | tmp = ntohl(call->tmp); | |
1822 | _debug("status count: %u/%u", tmp, call->count2); | |
1823 | if (tmp != call->count2) | |
1824 | return afs_protocol_error(call, -EBADMSG, | |
1825 | afs_eproto_ibulkst_count); | |
1826 | ||
1827 | call->count = 0; | |
1828 | call->unmarshall++; | |
1829 | more_counts: | |
1830 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus)); | |
1831 | ||
e690c9e3 | 1832 | /* Fall through */ |
30062bd1 DH |
1833 | case 2: |
1834 | _debug("extract status array %u", call->count); | |
1835 | ret = afs_extract_data(call, true); | |
1836 | if (ret < 0) | |
1837 | return ret; | |
1838 | ||
1839 | bp = call->buffer; | |
87182759 | 1840 | scb = &call->out_scb[call->count]; |
a58823ac | 1841 | ret = xdr_decode_YFSFetchStatus(&bp, call, scb); |
30062bd1 DH |
1842 | if (ret < 0) |
1843 | return ret; | |
1844 | ||
1845 | call->count++; | |
1846 | if (call->count < call->count2) | |
1847 | goto more_counts; | |
1848 | ||
1849 | call->count = 0; | |
1850 | call->unmarshall++; | |
1851 | afs_extract_to_tmp(call); | |
1852 | ||
1853 | /* Extract the callback count and array in two steps */ | |
e690c9e3 | 1854 | /* Fall through */ |
30062bd1 DH |
1855 | case 3: |
1856 | _debug("extract CB count"); | |
1857 | ret = afs_extract_data(call, true); | |
1858 | if (ret < 0) | |
1859 | return ret; | |
1860 | ||
1861 | tmp = ntohl(call->tmp); | |
1862 | _debug("CB count: %u", tmp); | |
1863 | if (tmp != call->count2) | |
1864 | return afs_protocol_error(call, -EBADMSG, | |
1865 | afs_eproto_ibulkst_cb_count); | |
1866 | call->count = 0; | |
1867 | call->unmarshall++; | |
1868 | more_cbs: | |
1869 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack)); | |
1870 | ||
e690c9e3 | 1871 | /* Fall through */ |
30062bd1 DH |
1872 | case 4: |
1873 | _debug("extract CB array"); | |
1874 | ret = afs_extract_data(call, true); | |
1875 | if (ret < 0) | |
1876 | return ret; | |
1877 | ||
1878 | _debug("unmarshall CB array"); | |
1879 | bp = call->buffer; | |
87182759 | 1880 | scb = &call->out_scb[call->count]; |
a58823ac | 1881 | xdr_decode_YFSCallBack(&bp, call, scb); |
30062bd1 DH |
1882 | call->count++; |
1883 | if (call->count < call->count2) | |
1884 | goto more_cbs; | |
1885 | ||
1886 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync)); | |
1887 | call->unmarshall++; | |
1888 | ||
e690c9e3 | 1889 | /* Fall through */ |
30062bd1 DH |
1890 | case 5: |
1891 | ret = afs_extract_data(call, false); | |
1892 | if (ret < 0) | |
1893 | return ret; | |
1894 | ||
1895 | bp = call->buffer; | |
ffba718e | 1896 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1897 | |
1898 | call->unmarshall++; | |
1899 | ||
e690c9e3 | 1900 | /* Fall through */ |
30062bd1 DH |
1901 | case 6: |
1902 | break; | |
1903 | } | |
1904 | ||
1905 | _leave(" = 0 [done]"); | |
1906 | return 0; | |
1907 | } | |
1908 | ||
1909 | /* | |
1910 | * FS.InlineBulkStatus operation type | |
1911 | */ | |
1912 | static const struct afs_call_type yfs_RXYFSInlineBulkStatus = { | |
1913 | .name = "YFS.InlineBulkStatus", | |
1914 | .op = yfs_FS_InlineBulkStatus, | |
1915 | .deliver = yfs_deliver_fs_inline_bulk_status, | |
1916 | .destructor = afs_flat_call_destructor, | |
1917 | }; | |
1918 | ||
1919 | /* | |
1920 | * Fetch the status information for up to 1024 files | |
1921 | */ | |
1922 | int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, | |
1923 | struct afs_net *net, | |
1924 | struct afs_fid *fids, | |
87182759 | 1925 | struct afs_status_cb *statuses, |
30062bd1 DH |
1926 | unsigned int nr_fids, |
1927 | struct afs_volsync *volsync) | |
1928 | { | |
1929 | struct afs_call *call; | |
1930 | __be32 *bp; | |
1931 | int i; | |
1932 | ||
1933 | _enter(",%x,{%llx:%llu},%u", | |
1934 | key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids); | |
1935 | ||
1936 | call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus, | |
1937 | sizeof(__be32) + | |
1938 | sizeof(__be32) + | |
1939 | sizeof(__be32) + | |
1940 | sizeof(struct yfs_xdr_YFSFid) * nr_fids, | |
1941 | sizeof(struct yfs_xdr_YFSFetchStatus)); | |
1942 | if (!call) { | |
1943 | fc->ac.error = -ENOMEM; | |
1944 | return -ENOMEM; | |
1945 | } | |
1946 | ||
1947 | call->key = fc->key; | |
87182759 | 1948 | call->out_scb = statuses; |
ffba718e | 1949 | call->out_volsync = volsync; |
30062bd1 DH |
1950 | call->count2 = nr_fids; |
1951 | ||
1952 | /* marshall the parameters */ | |
1953 | bp = call->request; | |
1954 | bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS); | |
1955 | bp = xdr_encode_u32(bp, 0); /* RPCFlags */ | |
1956 | bp = xdr_encode_u32(bp, nr_fids); | |
1957 | for (i = 0; i < nr_fids; i++) | |
1958 | bp = xdr_encode_YFSFid(bp, &fids[i]); | |
1959 | yfs_check_req(call, bp); | |
1960 | ||
30062bd1 DH |
1961 | afs_use_fs_server(call, fc->cbi); |
1962 | trace_afs_make_fs_call(call, &fids[0]); | |
20b8391f | 1963 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1964 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1965 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 1966 | } |
ae46578b DH |
1967 | |
1968 | /* | |
1969 | * Deliver reply data to an YFS.FetchOpaqueACL. | |
1970 | */ | |
1971 | static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) | |
1972 | { | |
ffba718e | 1973 | struct yfs_acl *yacl = call->out_yacl; |
ae46578b DH |
1974 | struct afs_acl *acl; |
1975 | const __be32 *bp; | |
1976 | unsigned int size; | |
1977 | int ret; | |
1978 | ||
1979 | _enter("{%u}", call->unmarshall); | |
1980 | ||
1981 | switch (call->unmarshall) { | |
1982 | case 0: | |
1983 | afs_extract_to_tmp(call); | |
1984 | call->unmarshall++; | |
1985 | ||
1986 | /* Extract the file ACL length */ | |
1987 | case 1: | |
1988 | ret = afs_extract_data(call, true); | |
1989 | if (ret < 0) | |
1990 | return ret; | |
1991 | ||
1992 | size = call->count2 = ntohl(call->tmp); | |
1993 | size = round_up(size, 4); | |
1994 | ||
1995 | if (yacl->flags & YFS_ACL_WANT_ACL) { | |
1996 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
1997 | if (!acl) | |
1998 | return -ENOMEM; | |
1999 | yacl->acl = acl; | |
2000 | acl->size = call->count2; | |
2001 | afs_extract_begin(call, acl->data, size); | |
2002 | } else { | |
2003 | iov_iter_discard(&call->iter, READ, size); | |
2004 | } | |
2005 | call->unmarshall++; | |
2006 | ||
2007 | /* Extract the file ACL */ | |
2008 | case 2: | |
2009 | ret = afs_extract_data(call, true); | |
2010 | if (ret < 0) | |
2011 | return ret; | |
2012 | ||
2013 | afs_extract_to_tmp(call); | |
2014 | call->unmarshall++; | |
2015 | ||
2016 | /* Extract the volume ACL length */ | |
2017 | case 3: | |
2018 | ret = afs_extract_data(call, true); | |
2019 | if (ret < 0) | |
2020 | return ret; | |
2021 | ||
2022 | size = call->count2 = ntohl(call->tmp); | |
2023 | size = round_up(size, 4); | |
2024 | ||
2025 | if (yacl->flags & YFS_ACL_WANT_VOL_ACL) { | |
2026 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2027 | if (!acl) | |
2028 | return -ENOMEM; | |
2029 | yacl->vol_acl = acl; | |
2030 | acl->size = call->count2; | |
2031 | afs_extract_begin(call, acl->data, size); | |
2032 | } else { | |
2033 | iov_iter_discard(&call->iter, READ, size); | |
2034 | } | |
2035 | call->unmarshall++; | |
2036 | ||
2037 | /* Extract the volume ACL */ | |
2038 | case 4: | |
2039 | ret = afs_extract_data(call, true); | |
2040 | if (ret < 0) | |
2041 | return ret; | |
2042 | ||
2043 | afs_extract_to_buf(call, | |
2044 | sizeof(__be32) * 2 + | |
2045 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2046 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2047 | call->unmarshall++; | |
2048 | ||
2049 | /* extract the metadata */ | |
2050 | case 5: | |
2051 | ret = afs_extract_data(call, false); | |
2052 | if (ret < 0) | |
2053 | return ret; | |
2054 | ||
2055 | bp = call->buffer; | |
2056 | yacl->inherit_flag = ntohl(*bp++); | |
2057 | yacl->num_cleaned = ntohl(*bp++); | |
a58823ac | 2058 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
ae46578b DH |
2059 | if (ret < 0) |
2060 | return ret; | |
a58823ac | 2061 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
ae46578b DH |
2062 | |
2063 | call->unmarshall++; | |
2064 | ||
2065 | case 6: | |
2066 | break; | |
2067 | } | |
2068 | ||
2069 | _leave(" = 0 [done]"); | |
2070 | return 0; | |
2071 | } | |
2072 | ||
2073 | void yfs_free_opaque_acl(struct yfs_acl *yacl) | |
2074 | { | |
2075 | if (yacl) { | |
2076 | kfree(yacl->acl); | |
2077 | kfree(yacl->vol_acl); | |
2078 | kfree(yacl); | |
2079 | } | |
2080 | } | |
2081 | ||
ae46578b DH |
2082 | /* |
2083 | * YFS.FetchOpaqueACL operation type | |
2084 | */ | |
2085 | static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { | |
2086 | .name = "YFS.FetchOpaqueACL", | |
2087 | .op = yfs_FS_FetchOpaqueACL, | |
2088 | .deliver = yfs_deliver_fs_fetch_opaque_acl, | |
773e0c40 | 2089 | .destructor = afs_flat_call_destructor, |
ae46578b DH |
2090 | }; |
2091 | ||
2092 | /* | |
2093 | * Fetch the YFS advanced ACLs for a file. | |
2094 | */ | |
2095 | struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, | |
a58823ac DH |
2096 | struct yfs_acl *yacl, |
2097 | struct afs_status_cb *scb) | |
ae46578b DH |
2098 | { |
2099 | struct afs_vnode *vnode = fc->vnode; | |
2100 | struct afs_call *call; | |
ae46578b DH |
2101 | struct afs_net *net = afs_v2net(vnode); |
2102 | __be32 *bp; | |
2103 | ||
2104 | _enter(",%x,{%llx:%llu},,", | |
2105 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2106 | ||
2107 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL, | |
2108 | sizeof(__be32) * 2 + | |
2109 | sizeof(struct yfs_xdr_YFSFid), | |
2110 | sizeof(__be32) * 2 + | |
2111 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2112 | sizeof(struct yfs_xdr_YFSVolSync)); | |
773e0c40 DH |
2113 | if (!call) { |
2114 | fc->ac.error = -ENOMEM; | |
2115 | return ERR_PTR(-ENOMEM); | |
2116 | } | |
ae46578b | 2117 | |
ae46578b | 2118 | call->key = fc->key; |
ffba718e | 2119 | call->out_yacl = yacl; |
a58823ac DH |
2120 | call->out_scb = scb; |
2121 | call->out_volsync = NULL; | |
ae46578b DH |
2122 | |
2123 | /* marshall the parameters */ | |
2124 | bp = call->request; | |
2125 | bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL); | |
2126 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2127 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2128 | yfs_check_req(call, bp); | |
2129 | ||
ae46578b DH |
2130 | afs_use_fs_server(call, fc->cbi); |
2131 | trace_afs_make_fs_call(call, &vnode->fid); | |
2132 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2133 | return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac); | |
ae46578b | 2134 | } |
f5e45463 DH |
2135 | |
2136 | /* | |
2137 | * YFS.StoreOpaqueACL2 operation type | |
2138 | */ | |
2139 | static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { | |
2140 | .name = "YFS.StoreOpaqueACL2", | |
2141 | .op = yfs_FS_StoreOpaqueACL2, | |
2142 | .deliver = yfs_deliver_status_and_volsync, | |
2143 | .destructor = afs_flat_call_destructor, | |
2144 | }; | |
2145 | ||
2146 | /* | |
2147 | * Fetch the YFS ACL for a file. | |
2148 | */ | |
a58823ac DH |
2149 | int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl, |
2150 | struct afs_status_cb *scb) | |
f5e45463 DH |
2151 | { |
2152 | struct afs_vnode *vnode = fc->vnode; | |
2153 | struct afs_call *call; | |
2154 | struct afs_net *net = afs_v2net(vnode); | |
2155 | size_t size; | |
2156 | __be32 *bp; | |
2157 | ||
2158 | _enter(",%x,{%llx:%llu},,", | |
2159 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2160 | ||
2161 | size = round_up(acl->size, 4); | |
2162 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus, | |
2163 | sizeof(__be32) * 2 + | |
2164 | sizeof(struct yfs_xdr_YFSFid) + | |
2165 | sizeof(__be32) + size, | |
2166 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2167 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2168 | if (!call) { | |
2169 | fc->ac.error = -ENOMEM; | |
2170 | return -ENOMEM; | |
2171 | } | |
2172 | ||
2173 | call->key = fc->key; | |
a58823ac | 2174 | call->out_scb = scb; |
ffba718e | 2175 | call->out_volsync = NULL; |
f5e45463 DH |
2176 | |
2177 | /* marshall the parameters */ | |
2178 | bp = call->request; | |
2179 | bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2); | |
2180 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2181 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2182 | bp = xdr_encode_u32(bp, acl->size); | |
2183 | memcpy(bp, acl->data, acl->size); | |
2184 | if (acl->size != size) | |
2185 | memset((void *)bp + acl->size, 0, size - acl->size); | |
2186 | yfs_check_req(call, bp); | |
2187 | ||
2188 | trace_afs_make_fs_call(call, &vnode->fid); | |
2189 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2190 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 2191 | } |