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b4d0d230 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
30062bd1 DH |
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) | |
30062bd1 DH |
6 | */ |
7 | ||
8 | #include <linux/init.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/sched.h> | |
11 | #include <linux/circ_buf.h> | |
12 | #include <linux/iversion.h> | |
13 | #include "internal.h" | |
14 | #include "afs_fs.h" | |
15 | #include "xdr_fs.h" | |
16 | #include "protocol_yfs.h" | |
17 | ||
18 | static const struct afs_fid afs_zero_fid; | |
19 | ||
20 | static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi) | |
21 | { | |
22 | call->cbi = afs_get_cb_interest(cbi); | |
23 | } | |
24 | ||
25 | #define xdr_size(x) (sizeof(*x) / sizeof(__be32)) | |
26 | ||
27 | static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid) | |
28 | { | |
29 | const struct yfs_xdr_YFSFid *x = (const void *)*_bp; | |
30 | ||
31 | fid->vid = xdr_to_u64(x->volume); | |
32 | fid->vnode = xdr_to_u64(x->vnode.lo); | |
33 | fid->vnode_hi = ntohl(x->vnode.hi); | |
34 | fid->unique = ntohl(x->vnode.unique); | |
35 | *_bp += xdr_size(x); | |
36 | } | |
37 | ||
38 | static __be32 *xdr_encode_u32(__be32 *bp, u32 n) | |
39 | { | |
40 | *bp++ = htonl(n); | |
41 | return bp; | |
42 | } | |
43 | ||
44 | static __be32 *xdr_encode_u64(__be32 *bp, u64 n) | |
45 | { | |
46 | struct yfs_xdr_u64 *x = (void *)bp; | |
47 | ||
48 | *x = u64_to_xdr(n); | |
49 | return bp + xdr_size(x); | |
50 | } | |
51 | ||
52 | static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid) | |
53 | { | |
54 | struct yfs_xdr_YFSFid *x = (void *)bp; | |
55 | ||
56 | x->volume = u64_to_xdr(fid->vid); | |
57 | x->vnode.lo = u64_to_xdr(fid->vnode); | |
58 | x->vnode.hi = htonl(fid->vnode_hi); | |
59 | x->vnode.unique = htonl(fid->unique); | |
60 | return bp + xdr_size(x); | |
61 | } | |
62 | ||
63 | static size_t xdr_strlen(unsigned int len) | |
64 | { | |
65 | return sizeof(__be32) + round_up(len, sizeof(__be32)); | |
66 | } | |
67 | ||
68 | static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len) | |
69 | { | |
70 | bp = xdr_encode_u32(bp, len); | |
71 | bp = memcpy(bp, p, len); | |
72 | if (len & 3) { | |
73 | unsigned int pad = 4 - (len & 3); | |
74 | ||
75 | memset((u8 *)bp + len, 0, pad); | |
76 | len += pad; | |
77 | } | |
78 | ||
79 | return bp + len / sizeof(__be32); | |
80 | } | |
81 | ||
82 | static s64 linux_to_yfs_time(const struct timespec64 *t) | |
83 | { | |
84 | /* Convert to 100ns intervals. */ | |
85 | return (u64)t->tv_sec * 10000000 + t->tv_nsec/100; | |
86 | } | |
87 | ||
88 | static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode) | |
89 | { | |
90 | struct yfs_xdr_YFSStoreStatus *x = (void *)bp; | |
91 | ||
92 | x->mask = htonl(AFS_SET_MODE); | |
93 | x->mode = htonl(mode & S_IALLUGO); | |
94 | x->mtime_client = u64_to_xdr(0); | |
95 | x->owner = u64_to_xdr(0); | |
96 | x->group = u64_to_xdr(0); | |
97 | return bp + xdr_size(x); | |
98 | } | |
99 | ||
100 | static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t) | |
101 | { | |
102 | struct yfs_xdr_YFSStoreStatus *x = (void *)bp; | |
103 | s64 mtime = linux_to_yfs_time(t); | |
104 | ||
105 | x->mask = htonl(AFS_SET_MTIME); | |
106 | x->mode = htonl(0); | |
107 | x->mtime_client = u64_to_xdr(mtime); | |
108 | x->owner = u64_to_xdr(0); | |
109 | x->group = u64_to_xdr(0); | |
110 | return bp + xdr_size(x); | |
111 | } | |
112 | ||
113 | /* | |
114 | * Convert a signed 100ns-resolution 64-bit time into a timespec. | |
115 | */ | |
116 | static struct timespec64 yfs_time_to_linux(s64 t) | |
117 | { | |
118 | struct timespec64 ts; | |
119 | u64 abs_t; | |
120 | ||
121 | /* | |
122 | * Unfortunately can not use normal 64 bit division on 32 bit arch, but | |
123 | * the alternative, do_div, does not work with negative numbers so have | |
124 | * to special case them | |
125 | */ | |
126 | if (t < 0) { | |
127 | abs_t = -t; | |
128 | ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100); | |
129 | ts.tv_nsec = -ts.tv_nsec; | |
130 | ts.tv_sec = -abs_t; | |
131 | } else { | |
132 | abs_t = t; | |
133 | ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100; | |
134 | ts.tv_sec = abs_t; | |
135 | } | |
136 | ||
137 | return ts; | |
138 | } | |
139 | ||
140 | static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr) | |
141 | { | |
142 | s64 t = xdr_to_u64(xdr); | |
143 | ||
144 | return yfs_time_to_linux(t); | |
145 | } | |
146 | ||
147 | static void yfs_check_req(struct afs_call *call, __be32 *bp) | |
148 | { | |
149 | size_t len = (void *)bp - call->request; | |
150 | ||
151 | if (len > call->request_size) | |
152 | pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n", | |
153 | call->type->name, len, call->request_size); | |
154 | else if (len < call->request_size) | |
a4e530ae KW |
155 | pr_warn("kAFS: %s: Request buffer underflow (%zu<%u)\n", |
156 | call->type->name, len, call->request_size); | |
30062bd1 DH |
157 | } |
158 | ||
159 | /* | |
160 | * Dump a bad file status record. | |
161 | */ | |
162 | static void xdr_dump_bad(const __be32 *bp) | |
163 | { | |
164 | __be32 x[4]; | |
165 | int i; | |
166 | ||
167 | pr_notice("YFS XDR: Bad status record\n"); | |
3efe55b0 | 168 | for (i = 0; i < 6 * 4 * 4; i += 16) { |
30062bd1 DH |
169 | memcpy(x, bp, 16); |
170 | bp += 4; | |
171 | pr_notice("%03x: %08x %08x %08x %08x\n", | |
172 | i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); | |
173 | } | |
174 | ||
3efe55b0 DH |
175 | memcpy(x, bp, 8); |
176 | pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1])); | |
30062bd1 DH |
177 | } |
178 | ||
179 | /* | |
180 | * Decode a YFSFetchStatus block | |
181 | */ | |
a58823ac DH |
182 | static int xdr_decode_YFSFetchStatus(const __be32 **_bp, |
183 | struct afs_call *call, | |
184 | struct afs_status_cb *scb) | |
30062bd1 DH |
185 | { |
186 | const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp; | |
a58823ac | 187 | struct afs_file_status *status = &scb->status; |
30062bd1 | 188 | u32 type; |
c72057b5 | 189 | int ret; |
30062bd1 DH |
190 | |
191 | status->abort_code = ntohl(xdr->abort_code); | |
192 | if (status->abort_code != 0) { | |
a58823ac | 193 | if (status->abort_code == VNOVNODE) |
30062bd1 | 194 | status->nlink = 0; |
a38a7558 | 195 | scb->have_error = true; |
c72057b5 | 196 | goto good; |
30062bd1 DH |
197 | } |
198 | ||
199 | type = ntohl(xdr->type); | |
200 | switch (type) { | |
201 | case AFS_FTYPE_FILE: | |
202 | case AFS_FTYPE_DIR: | |
203 | case AFS_FTYPE_SYMLINK: | |
30062bd1 DH |
204 | status->type = type; |
205 | break; | |
206 | default: | |
207 | goto bad; | |
208 | } | |
209 | ||
a58823ac DH |
210 | status->nlink = ntohl(xdr->nlink); |
211 | status->author = xdr_to_u64(xdr->author); | |
212 | status->owner = xdr_to_u64(xdr->owner); | |
213 | status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ | |
214 | status->anon_access = ntohl(xdr->anon_access); | |
215 | status->mode = ntohl(xdr->mode) & S_IALLUGO; | |
216 | status->group = xdr_to_u64(xdr->group); | |
217 | status->lock_count = ntohl(xdr->lock_count); | |
30062bd1 | 218 | |
a58823ac DH |
219 | status->mtime_client = xdr_to_time(xdr->mtime_client); |
220 | status->mtime_server = xdr_to_time(xdr->mtime_server); | |
221 | status->size = xdr_to_u64(xdr->size); | |
222 | status->data_version = xdr_to_u64(xdr->data_version); | |
a38a7558 | 223 | scb->have_status = true; |
c72057b5 DH |
224 | good: |
225 | ret = 0; | |
226 | advance: | |
a58823ac | 227 | *_bp += xdr_size(xdr); |
c72057b5 | 228 | return ret; |
30062bd1 DH |
229 | |
230 | bad: | |
231 | xdr_dump_bad(*_bp); | |
c72057b5 DH |
232 | ret = afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status); |
233 | goto advance; | |
30062bd1 DH |
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}", | |
fc276122 | 448 | call->unmarshall, iov_iter_count(call->iter), req->actual_len); |
30062bd1 DH |
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++; | |
35a3a90c | 457 | /* Fall through */ |
30062bd1 | 458 | |
35a3a90c | 459 | /* extract the returned data length */ |
30062bd1 DH |
460 | case 1: |
461 | _debug("extract data length"); | |
462 | ret = afs_extract_data(call, true); | |
463 | if (ret < 0) | |
464 | return ret; | |
465 | ||
466 | req->actual_len = be64_to_cpu(call->tmp64); | |
467 | _debug("DATA length: %llu", req->actual_len); | |
468 | req->remain = min(req->len, req->actual_len); | |
469 | if (req->remain == 0) | |
470 | goto no_more_data; | |
471 | ||
472 | call->unmarshall++; | |
473 | ||
474 | begin_page: | |
475 | ASSERTCMP(req->index, <, req->nr_pages); | |
476 | if (req->remain > PAGE_SIZE - req->offset) | |
477 | size = PAGE_SIZE - req->offset; | |
478 | else | |
479 | size = req->remain; | |
480 | call->bvec[0].bv_len = size; | |
481 | call->bvec[0].bv_offset = req->offset; | |
482 | call->bvec[0].bv_page = req->pages[req->index]; | |
fc276122 | 483 | iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size); |
30062bd1 | 484 | ASSERTCMP(size, <=, PAGE_SIZE); |
35a3a90c | 485 | /* Fall through */ |
30062bd1 | 486 | |
35a3a90c | 487 | /* extract the returned data */ |
30062bd1 DH |
488 | case 2: |
489 | _debug("extract data %zu/%llu", | |
fc276122 | 490 | iov_iter_count(call->iter), req->remain); |
30062bd1 DH |
491 | |
492 | ret = afs_extract_data(call, true); | |
493 | if (ret < 0) | |
494 | return ret; | |
495 | req->remain -= call->bvec[0].bv_len; | |
496 | req->offset += call->bvec[0].bv_len; | |
497 | ASSERTCMP(req->offset, <=, PAGE_SIZE); | |
498 | if (req->offset == PAGE_SIZE) { | |
499 | req->offset = 0; | |
500 | if (req->page_done) | |
a58823ac | 501 | req->page_done(req); |
30062bd1 DH |
502 | req->index++; |
503 | if (req->remain > 0) | |
504 | goto begin_page; | |
505 | } | |
506 | ||
507 | ASSERTCMP(req->remain, ==, 0); | |
508 | if (req->actual_len <= req->len) | |
509 | goto no_more_data; | |
510 | ||
511 | /* Discard any excess data the server gave us */ | |
23a28913 | 512 | afs_extract_discard(call, req->actual_len - req->len); |
30062bd1 | 513 | call->unmarshall = 3; |
e690c9e3 | 514 | /* Fall through */ |
35a3a90c | 515 | |
30062bd1 DH |
516 | case 3: |
517 | _debug("extract discard %zu/%llu", | |
fc276122 | 518 | iov_iter_count(call->iter), req->actual_len - req->len); |
30062bd1 DH |
519 | |
520 | ret = afs_extract_data(call, true); | |
521 | if (ret < 0) | |
522 | return ret; | |
523 | ||
524 | no_more_data: | |
525 | call->unmarshall = 4; | |
526 | afs_extract_to_buf(call, | |
527 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
528 | sizeof(struct yfs_xdr_YFSCallBack) + | |
529 | sizeof(struct yfs_xdr_YFSVolSync)); | |
35a3a90c | 530 | /* Fall through */ |
30062bd1 | 531 | |
35a3a90c | 532 | /* extract the metadata */ |
30062bd1 DH |
533 | case 4: |
534 | ret = afs_extract_data(call, false); | |
535 | if (ret < 0) | |
536 | return ret; | |
537 | ||
538 | bp = call->buffer; | |
a58823ac | 539 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
540 | if (ret < 0) |
541 | return ret; | |
a58823ac | 542 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
ffba718e | 543 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 | 544 | |
a58823ac DH |
545 | req->data_version = call->out_scb->status.data_version; |
546 | req->file_size = call->out_scb->status.size; | |
547 | ||
30062bd1 | 548 | call->unmarshall++; |
e690c9e3 | 549 | /* Fall through */ |
35a3a90c | 550 | |
30062bd1 DH |
551 | case 5: |
552 | break; | |
553 | } | |
554 | ||
555 | for (; req->index < req->nr_pages; req->index++) { | |
556 | if (req->offset < PAGE_SIZE) | |
557 | zero_user_segment(req->pages[req->index], | |
558 | req->offset, PAGE_SIZE); | |
559 | if (req->page_done) | |
a58823ac | 560 | req->page_done(req); |
30062bd1 DH |
561 | req->offset = 0; |
562 | } | |
563 | ||
564 | _leave(" = 0 [done]"); | |
565 | return 0; | |
566 | } | |
567 | ||
568 | static void yfs_fetch_data_destructor(struct afs_call *call) | |
569 | { | |
ffba718e | 570 | afs_put_read(call->read_request); |
30062bd1 DH |
571 | afs_flat_call_destructor(call); |
572 | } | |
573 | ||
574 | /* | |
575 | * YFS.FetchData64 operation type | |
576 | */ | |
577 | static const struct afs_call_type yfs_RXYFSFetchData64 = { | |
578 | .name = "YFS.FetchData64", | |
579 | .op = yfs_FS_FetchData64, | |
580 | .deliver = yfs_deliver_fs_fetch_data64, | |
581 | .destructor = yfs_fetch_data_destructor, | |
582 | }; | |
583 | ||
584 | /* | |
585 | * Fetch data from a file. | |
586 | */ | |
a58823ac DH |
587 | int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb, |
588 | struct afs_read *req) | |
30062bd1 DH |
589 | { |
590 | struct afs_vnode *vnode = fc->vnode; | |
591 | struct afs_call *call; | |
592 | struct afs_net *net = afs_v2net(vnode); | |
593 | __be32 *bp; | |
594 | ||
595 | _enter(",%x,{%llx:%llu},%llx,%llx", | |
596 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode, | |
597 | req->pos, req->len); | |
598 | ||
599 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64, | |
600 | sizeof(__be32) * 2 + | |
601 | sizeof(struct yfs_xdr_YFSFid) + | |
602 | sizeof(struct yfs_xdr_u64) * 2, | |
603 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
604 | sizeof(struct yfs_xdr_YFSCallBack) + | |
605 | sizeof(struct yfs_xdr_YFSVolSync)); | |
606 | if (!call) | |
607 | return -ENOMEM; | |
608 | ||
609 | call->key = fc->key; | |
a58823ac | 610 | call->out_scb = scb; |
ffba718e | 611 | call->out_volsync = NULL; |
d4438a25 | 612 | call->read_request = afs_get_read(req); |
30062bd1 DH |
613 | |
614 | /* marshall the parameters */ | |
615 | bp = call->request; | |
616 | bp = xdr_encode_u32(bp, YFSFETCHDATA64); | |
617 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
618 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
619 | bp = xdr_encode_u64(bp, req->pos); | |
620 | bp = xdr_encode_u64(bp, req->len); | |
621 | yfs_check_req(call, bp); | |
622 | ||
30062bd1 DH |
623 | afs_use_fs_server(call, fc->cbi); |
624 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 625 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
626 | afs_make_call(&fc->ac, call, GFP_NOFS); |
627 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
628 | } |
629 | ||
630 | /* | |
631 | * Deliver reply data for YFS.CreateFile or YFS.MakeDir. | |
632 | */ | |
633 | static int yfs_deliver_fs_create_vnode(struct afs_call *call) | |
634 | { | |
30062bd1 DH |
635 | const __be32 *bp; |
636 | int ret; | |
637 | ||
638 | _enter("{%u}", call->unmarshall); | |
639 | ||
640 | ret = afs_transfer_reply(call); | |
641 | if (ret < 0) | |
642 | return ret; | |
643 | ||
644 | /* unmarshall the reply once we've received all of it */ | |
645 | bp = call->buffer; | |
ffba718e | 646 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 647 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
648 | if (ret < 0) |
649 | return ret; | |
a58823ac | 650 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
651 | if (ret < 0) |
652 | return ret; | |
a58823ac DH |
653 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
654 | xdr_decode_YFSVolSync(&bp, call->out_volsync); | |
30062bd1 DH |
655 | |
656 | _leave(" = 0 [done]"); | |
657 | return 0; | |
658 | } | |
659 | ||
660 | /* | |
661 | * FS.CreateFile and FS.MakeDir operation type | |
662 | */ | |
663 | static const struct afs_call_type afs_RXFSCreateFile = { | |
664 | .name = "YFS.CreateFile", | |
665 | .op = yfs_FS_CreateFile, | |
666 | .deliver = yfs_deliver_fs_create_vnode, | |
667 | .destructor = afs_flat_call_destructor, | |
668 | }; | |
669 | ||
670 | /* | |
671 | * Create a file. | |
672 | */ | |
673 | int yfs_fs_create_file(struct afs_fs_cursor *fc, | |
674 | const char *name, | |
675 | umode_t mode, | |
a58823ac | 676 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 677 | struct afs_fid *newfid, |
a58823ac | 678 | struct afs_status_cb *new_scb) |
30062bd1 | 679 | { |
ffba718e | 680 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 681 | struct afs_call *call; |
ffba718e | 682 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
683 | size_t namesz, reqsz, rplsz; |
684 | __be32 *bp; | |
685 | ||
686 | _enter(""); | |
687 | ||
688 | namesz = strlen(name); | |
689 | reqsz = (sizeof(__be32) + | |
690 | sizeof(__be32) + | |
691 | sizeof(struct yfs_xdr_YFSFid) + | |
692 | xdr_strlen(namesz) + | |
693 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
694 | sizeof(__be32)); | |
695 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
696 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
697 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
698 | sizeof(struct yfs_xdr_YFSCallBack) + | |
699 | sizeof(struct yfs_xdr_YFSVolSync)); | |
700 | ||
701 | call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz); | |
702 | if (!call) | |
703 | return -ENOMEM; | |
704 | ||
705 | call->key = fc->key; | |
a58823ac | 706 | call->out_dir_scb = dvnode_scb; |
ffba718e | 707 | call->out_fid = newfid; |
a58823ac | 708 | call->out_scb = new_scb; |
30062bd1 DH |
709 | |
710 | /* marshall the parameters */ | |
711 | bp = call->request; | |
712 | bp = xdr_encode_u32(bp, YFSCREATEFILE); | |
713 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 714 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
715 | bp = xdr_encode_string(bp, name, namesz); |
716 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
5edc22cc | 717 | bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */ |
30062bd1 DH |
718 | yfs_check_req(call, bp); |
719 | ||
720 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 721 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 722 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
723 | afs_make_call(&fc->ac, call, GFP_NOFS); |
724 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
725 | } |
726 | ||
727 | static const struct afs_call_type yfs_RXFSMakeDir = { | |
728 | .name = "YFS.MakeDir", | |
729 | .op = yfs_FS_MakeDir, | |
730 | .deliver = yfs_deliver_fs_create_vnode, | |
731 | .destructor = afs_flat_call_destructor, | |
732 | }; | |
733 | ||
734 | /* | |
735 | * Make a directory. | |
736 | */ | |
737 | int yfs_fs_make_dir(struct afs_fs_cursor *fc, | |
738 | const char *name, | |
739 | umode_t mode, | |
a58823ac | 740 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 741 | struct afs_fid *newfid, |
a58823ac | 742 | struct afs_status_cb *new_scb) |
30062bd1 | 743 | { |
ffba718e | 744 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 745 | struct afs_call *call; |
ffba718e | 746 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
747 | size_t namesz, reqsz, rplsz; |
748 | __be32 *bp; | |
749 | ||
750 | _enter(""); | |
751 | ||
752 | namesz = strlen(name); | |
753 | reqsz = (sizeof(__be32) + | |
754 | sizeof(struct yfs_xdr_RPCFlags) + | |
755 | sizeof(struct yfs_xdr_YFSFid) + | |
756 | xdr_strlen(namesz) + | |
757 | sizeof(struct yfs_xdr_YFSStoreStatus)); | |
758 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
759 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
760 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
761 | sizeof(struct yfs_xdr_YFSCallBack) + | |
762 | sizeof(struct yfs_xdr_YFSVolSync)); | |
763 | ||
764 | call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz); | |
765 | if (!call) | |
766 | return -ENOMEM; | |
767 | ||
768 | call->key = fc->key; | |
a58823ac | 769 | call->out_dir_scb = dvnode_scb; |
ffba718e | 770 | call->out_fid = newfid; |
a58823ac | 771 | call->out_scb = new_scb; |
30062bd1 DH |
772 | |
773 | /* marshall the parameters */ | |
774 | bp = call->request; | |
775 | bp = xdr_encode_u32(bp, YFSMAKEDIR); | |
776 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 777 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
778 | bp = xdr_encode_string(bp, name, namesz); |
779 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
780 | yfs_check_req(call, bp); | |
781 | ||
782 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 783 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 784 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
785 | afs_make_call(&fc->ac, call, GFP_NOFS); |
786 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
787 | } |
788 | ||
789 | /* | |
790 | * Deliver reply data to a YFS.RemoveFile2 operation. | |
791 | */ | |
792 | static int yfs_deliver_fs_remove_file2(struct afs_call *call) | |
793 | { | |
30062bd1 DH |
794 | struct afs_fid fid; |
795 | const __be32 *bp; | |
796 | int ret; | |
797 | ||
798 | _enter("{%u}", call->unmarshall); | |
799 | ||
800 | ret = afs_transfer_reply(call); | |
801 | if (ret < 0) | |
802 | return ret; | |
803 | ||
30062bd1 | 804 | bp = call->buffer; |
a58823ac | 805 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
806 | if (ret < 0) |
807 | return ret; | |
808 | ||
809 | xdr_decode_YFSFid(&bp, &fid); | |
a58823ac | 810 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
811 | if (ret < 0) |
812 | return ret; | |
813 | /* Was deleted if vnode->status.abort_code == VNOVNODE. */ | |
814 | ||
a58823ac | 815 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
816 | return 0; |
817 | } | |
818 | ||
819 | /* | |
820 | * YFS.RemoveFile2 operation type. | |
821 | */ | |
822 | static const struct afs_call_type yfs_RXYFSRemoveFile2 = { | |
823 | .name = "YFS.RemoveFile2", | |
824 | .op = yfs_FS_RemoveFile2, | |
825 | .deliver = yfs_deliver_fs_remove_file2, | |
826 | .destructor = afs_flat_call_destructor, | |
827 | }; | |
828 | ||
829 | /* | |
830 | * Remove a file and retrieve new file status. | |
831 | */ | |
832 | int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
833 | const char *name, struct afs_status_cb *dvnode_scb, |
834 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
835 | { |
836 | struct afs_vnode *dvnode = fc->vnode; | |
837 | struct afs_call *call; | |
838 | struct afs_net *net = afs_v2net(dvnode); | |
839 | size_t namesz; | |
840 | __be32 *bp; | |
841 | ||
842 | _enter(""); | |
843 | ||
844 | namesz = strlen(name); | |
845 | ||
846 | call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2, | |
847 | sizeof(__be32) + | |
848 | sizeof(struct yfs_xdr_RPCFlags) + | |
849 | sizeof(struct yfs_xdr_YFSFid) + | |
850 | xdr_strlen(namesz), | |
851 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
852 | sizeof(struct yfs_xdr_YFSFid) + | |
853 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
854 | sizeof(struct yfs_xdr_YFSVolSync)); | |
855 | if (!call) | |
856 | return -ENOMEM; | |
857 | ||
858 | call->key = fc->key; | |
a58823ac DH |
859 | call->out_dir_scb = dvnode_scb; |
860 | call->out_scb = vnode_scb; | |
30062bd1 DH |
861 | |
862 | /* marshall the parameters */ | |
863 | bp = call->request; | |
864 | bp = xdr_encode_u32(bp, YFSREMOVEFILE2); | |
865 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
866 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
867 | bp = xdr_encode_string(bp, name, namesz); | |
868 | yfs_check_req(call, bp); | |
869 | ||
870 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 871 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 872 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
873 | afs_make_call(&fc->ac, call, GFP_NOFS); |
874 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
875 | } |
876 | ||
877 | /* | |
878 | * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation. | |
879 | */ | |
880 | static int yfs_deliver_fs_remove(struct afs_call *call) | |
881 | { | |
30062bd1 DH |
882 | const __be32 *bp; |
883 | int ret; | |
884 | ||
885 | _enter("{%u}", call->unmarshall); | |
886 | ||
887 | ret = afs_transfer_reply(call); | |
888 | if (ret < 0) | |
889 | return ret; | |
890 | ||
30062bd1 | 891 | bp = call->buffer; |
a58823ac | 892 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
893 | if (ret < 0) |
894 | return ret; | |
895 | ||
a58823ac | 896 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
897 | return 0; |
898 | } | |
899 | ||
900 | /* | |
901 | * FS.RemoveDir and FS.RemoveFile operation types. | |
902 | */ | |
903 | static const struct afs_call_type yfs_RXYFSRemoveFile = { | |
904 | .name = "YFS.RemoveFile", | |
905 | .op = yfs_FS_RemoveFile, | |
906 | .deliver = yfs_deliver_fs_remove, | |
907 | .destructor = afs_flat_call_destructor, | |
908 | }; | |
909 | ||
910 | static const struct afs_call_type yfs_RXYFSRemoveDir = { | |
911 | .name = "YFS.RemoveDir", | |
912 | .op = yfs_FS_RemoveDir, | |
913 | .deliver = yfs_deliver_fs_remove, | |
914 | .destructor = afs_flat_call_destructor, | |
915 | }; | |
916 | ||
917 | /* | |
918 | * remove a file or directory | |
919 | */ | |
920 | int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
921 | const char *name, bool isdir, |
922 | struct afs_status_cb *dvnode_scb) | |
30062bd1 DH |
923 | { |
924 | struct afs_vnode *dvnode = fc->vnode; | |
925 | struct afs_call *call; | |
926 | struct afs_net *net = afs_v2net(dvnode); | |
927 | size_t namesz; | |
928 | __be32 *bp; | |
929 | ||
930 | _enter(""); | |
931 | ||
932 | namesz = strlen(name); | |
933 | call = afs_alloc_flat_call( | |
934 | net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile, | |
935 | sizeof(__be32) + | |
936 | sizeof(struct yfs_xdr_RPCFlags) + | |
937 | sizeof(struct yfs_xdr_YFSFid) + | |
938 | xdr_strlen(namesz), | |
939 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
940 | sizeof(struct yfs_xdr_YFSVolSync)); | |
941 | if (!call) | |
942 | return -ENOMEM; | |
943 | ||
944 | call->key = fc->key; | |
a58823ac | 945 | call->out_dir_scb = dvnode_scb; |
30062bd1 DH |
946 | |
947 | /* marshall the parameters */ | |
948 | bp = call->request; | |
949 | bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE); | |
950 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
951 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
952 | bp = xdr_encode_string(bp, name, namesz); | |
953 | yfs_check_req(call, bp); | |
954 | ||
955 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 956 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 957 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
958 | afs_make_call(&fc->ac, call, GFP_NOFS); |
959 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
960 | } |
961 | ||
962 | /* | |
963 | * Deliver reply data to a YFS.Link operation. | |
964 | */ | |
965 | static int yfs_deliver_fs_link(struct afs_call *call) | |
966 | { | |
30062bd1 DH |
967 | const __be32 *bp; |
968 | int ret; | |
969 | ||
970 | _enter("{%u}", call->unmarshall); | |
971 | ||
972 | ret = afs_transfer_reply(call); | |
973 | if (ret < 0) | |
974 | return ret; | |
975 | ||
30062bd1 | 976 | bp = call->buffer; |
a58823ac | 977 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
978 | if (ret < 0) |
979 | return ret; | |
a58823ac | 980 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
981 | if (ret < 0) |
982 | return ret; | |
a58823ac | 983 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
984 | _leave(" = 0 [done]"); |
985 | return 0; | |
986 | } | |
987 | ||
988 | /* | |
989 | * YFS.Link operation type. | |
990 | */ | |
991 | static const struct afs_call_type yfs_RXYFSLink = { | |
992 | .name = "YFS.Link", | |
993 | .op = yfs_FS_Link, | |
994 | .deliver = yfs_deliver_fs_link, | |
995 | .destructor = afs_flat_call_destructor, | |
996 | }; | |
997 | ||
998 | /* | |
999 | * Make a hard link. | |
1000 | */ | |
1001 | int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
1002 | const char *name, |
1003 | struct afs_status_cb *dvnode_scb, | |
1004 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
1005 | { |
1006 | struct afs_vnode *dvnode = fc->vnode; | |
1007 | struct afs_call *call; | |
1008 | struct afs_net *net = afs_v2net(vnode); | |
1009 | size_t namesz; | |
1010 | __be32 *bp; | |
1011 | ||
1012 | _enter(""); | |
1013 | ||
1014 | namesz = strlen(name); | |
1015 | call = afs_alloc_flat_call(net, &yfs_RXYFSLink, | |
1016 | sizeof(__be32) + | |
1017 | sizeof(struct yfs_xdr_RPCFlags) + | |
1018 | sizeof(struct yfs_xdr_YFSFid) + | |
1019 | xdr_strlen(namesz) + | |
1020 | sizeof(struct yfs_xdr_YFSFid), | |
1021 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1022 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1023 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1024 | if (!call) | |
1025 | return -ENOMEM; | |
1026 | ||
1027 | call->key = fc->key; | |
a58823ac DH |
1028 | call->out_dir_scb = dvnode_scb; |
1029 | call->out_scb = vnode_scb; | |
30062bd1 DH |
1030 | |
1031 | /* marshall the parameters */ | |
1032 | bp = call->request; | |
1033 | bp = xdr_encode_u32(bp, YFSLINK); | |
1034 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1035 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1036 | bp = xdr_encode_string(bp, name, namesz); | |
1037 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1038 | yfs_check_req(call, bp); | |
1039 | ||
1040 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1041 | trace_afs_make_fs_call1(call, &vnode->fid, name); |
20b8391f | 1042 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1043 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1044 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1045 | } |
1046 | ||
1047 | /* | |
1048 | * Deliver reply data to a YFS.Symlink operation. | |
1049 | */ | |
1050 | static int yfs_deliver_fs_symlink(struct afs_call *call) | |
1051 | { | |
30062bd1 DH |
1052 | const __be32 *bp; |
1053 | int ret; | |
1054 | ||
1055 | _enter("{%u}", call->unmarshall); | |
1056 | ||
1057 | ret = afs_transfer_reply(call); | |
1058 | if (ret < 0) | |
1059 | return ret; | |
1060 | ||
1061 | /* unmarshall the reply once we've received all of it */ | |
1062 | bp = call->buffer; | |
ffba718e | 1063 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 1064 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
1065 | if (ret < 0) |
1066 | return ret; | |
a58823ac | 1067 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1068 | if (ret < 0) |
1069 | return ret; | |
a58823ac | 1070 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1071 | |
1072 | _leave(" = 0 [done]"); | |
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | * YFS.Symlink operation type | |
1078 | */ | |
1079 | static const struct afs_call_type yfs_RXYFSSymlink = { | |
1080 | .name = "YFS.Symlink", | |
1081 | .op = yfs_FS_Symlink, | |
1082 | .deliver = yfs_deliver_fs_symlink, | |
1083 | .destructor = afs_flat_call_destructor, | |
1084 | }; | |
1085 | ||
1086 | /* | |
1087 | * Create a symbolic link. | |
1088 | */ | |
1089 | int yfs_fs_symlink(struct afs_fs_cursor *fc, | |
1090 | const char *name, | |
1091 | const char *contents, | |
a58823ac | 1092 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 1093 | struct afs_fid *newfid, |
a58823ac | 1094 | struct afs_status_cb *vnode_scb) |
30062bd1 DH |
1095 | { |
1096 | struct afs_vnode *dvnode = fc->vnode; | |
1097 | struct afs_call *call; | |
1098 | struct afs_net *net = afs_v2net(dvnode); | |
1099 | size_t namesz, contents_sz; | |
1100 | __be32 *bp; | |
1101 | ||
1102 | _enter(""); | |
1103 | ||
1104 | namesz = strlen(name); | |
1105 | contents_sz = strlen(contents); | |
1106 | call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink, | |
1107 | sizeof(__be32) + | |
1108 | sizeof(struct yfs_xdr_RPCFlags) + | |
1109 | sizeof(struct yfs_xdr_YFSFid) + | |
1110 | xdr_strlen(namesz) + | |
1111 | xdr_strlen(contents_sz) + | |
1112 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1113 | sizeof(struct yfs_xdr_YFSFid) + | |
1114 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1115 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1116 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1117 | if (!call) | |
1118 | return -ENOMEM; | |
1119 | ||
1120 | call->key = fc->key; | |
a58823ac | 1121 | call->out_dir_scb = dvnode_scb; |
ffba718e | 1122 | call->out_fid = newfid; |
a58823ac | 1123 | call->out_scb = vnode_scb; |
30062bd1 DH |
1124 | |
1125 | /* marshall the parameters */ | |
1126 | bp = call->request; | |
1127 | bp = xdr_encode_u32(bp, YFSSYMLINK); | |
1128 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1129 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1130 | bp = xdr_encode_string(bp, name, namesz); | |
1131 | bp = xdr_encode_string(bp, contents, contents_sz); | |
1132 | bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO); | |
1133 | yfs_check_req(call, bp); | |
1134 | ||
1135 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1136 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 1137 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1138 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1139 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1140 | } |
1141 | ||
1142 | /* | |
1143 | * Deliver reply data to a YFS.Rename operation. | |
1144 | */ | |
1145 | static int yfs_deliver_fs_rename(struct afs_call *call) | |
1146 | { | |
30062bd1 DH |
1147 | const __be32 *bp; |
1148 | int ret; | |
1149 | ||
1150 | _enter("{%u}", call->unmarshall); | |
1151 | ||
1152 | ret = afs_transfer_reply(call); | |
1153 | if (ret < 0) | |
1154 | return ret; | |
1155 | ||
30062bd1 | 1156 | bp = call->buffer; |
a58823ac | 1157 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1158 | if (ret < 0) |
1159 | return ret; | |
b98f0ec9 DH |
1160 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
1161 | if (ret < 0) | |
1162 | return ret; | |
30062bd1 | 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)); | |
35a3a90c | 1436 | /* Fall through */ |
30062bd1 | 1437 | |
35a3a90c | 1438 | /* extract the returned status record */ |
30062bd1 DH |
1439 | case 1: |
1440 | _debug("extract status"); | |
1441 | ret = afs_extract_data(call, true); | |
1442 | if (ret < 0) | |
1443 | return ret; | |
1444 | ||
1445 | bp = call->buffer; | |
ffba718e | 1446 | xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus); |
30062bd1 DH |
1447 | call->unmarshall++; |
1448 | afs_extract_to_tmp(call); | |
35a3a90c | 1449 | /* Fall through */ |
30062bd1 | 1450 | |
35a3a90c | 1451 | /* extract the volume name length */ |
30062bd1 DH |
1452 | case 2: |
1453 | ret = afs_extract_data(call, true); | |
1454 | if (ret < 0) | |
1455 | return ret; | |
1456 | ||
1457 | call->count = ntohl(call->tmp); | |
1458 | _debug("volname length: %u", call->count); | |
1459 | if (call->count >= AFSNAMEMAX) | |
1460 | return afs_protocol_error(call, -EBADMSG, | |
1461 | afs_eproto_volname_len); | |
1462 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1463 | afs_extract_to_buf(call, size); |
30062bd1 | 1464 | call->unmarshall++; |
35a3a90c | 1465 | /* Fall through */ |
30062bd1 | 1466 | |
35a3a90c | 1467 | /* extract the volume name */ |
30062bd1 DH |
1468 | case 3: |
1469 | _debug("extract volname"); | |
1470 | ret = afs_extract_data(call, true); | |
1471 | if (ret < 0) | |
1472 | return ret; | |
1473 | ||
ffba718e | 1474 | p = call->buffer; |
30062bd1 DH |
1475 | p[call->count] = 0; |
1476 | _debug("volname '%s'", p); | |
1477 | afs_extract_to_tmp(call); | |
1478 | call->unmarshall++; | |
35a3a90c | 1479 | /* Fall through */ |
30062bd1 | 1480 | |
35a3a90c | 1481 | /* extract the offline message length */ |
30062bd1 DH |
1482 | case 4: |
1483 | ret = afs_extract_data(call, true); | |
1484 | if (ret < 0) | |
1485 | return ret; | |
1486 | ||
1487 | call->count = ntohl(call->tmp); | |
1488 | _debug("offline msg length: %u", call->count); | |
1489 | if (call->count >= AFSNAMEMAX) | |
1490 | return afs_protocol_error(call, -EBADMSG, | |
1491 | afs_eproto_offline_msg_len); | |
1492 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1493 | afs_extract_to_buf(call, size); |
30062bd1 | 1494 | call->unmarshall++; |
35a3a90c | 1495 | /* Fall through */ |
30062bd1 | 1496 | |
35a3a90c | 1497 | /* extract the offline message */ |
30062bd1 DH |
1498 | case 5: |
1499 | _debug("extract offline"); | |
1500 | ret = afs_extract_data(call, true); | |
1501 | if (ret < 0) | |
1502 | return ret; | |
1503 | ||
ffba718e | 1504 | p = call->buffer; |
30062bd1 DH |
1505 | p[call->count] = 0; |
1506 | _debug("offline '%s'", p); | |
1507 | ||
1508 | afs_extract_to_tmp(call); | |
1509 | call->unmarshall++; | |
35a3a90c | 1510 | /* Fall through */ |
30062bd1 | 1511 | |
35a3a90c | 1512 | /* extract the message of the day length */ |
30062bd1 DH |
1513 | case 6: |
1514 | ret = afs_extract_data(call, true); | |
1515 | if (ret < 0) | |
1516 | return ret; | |
1517 | ||
1518 | call->count = ntohl(call->tmp); | |
1519 | _debug("motd length: %u", call->count); | |
1520 | if (call->count >= AFSNAMEMAX) | |
1521 | return afs_protocol_error(call, -EBADMSG, | |
1522 | afs_eproto_motd_len); | |
1523 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1524 | afs_extract_to_buf(call, size); |
30062bd1 | 1525 | call->unmarshall++; |
35a3a90c | 1526 | /* Fall through */ |
30062bd1 | 1527 | |
35a3a90c | 1528 | /* extract the message of the day */ |
30062bd1 DH |
1529 | case 7: |
1530 | _debug("extract motd"); | |
1531 | ret = afs_extract_data(call, false); | |
1532 | if (ret < 0) | |
1533 | return ret; | |
1534 | ||
ffba718e | 1535 | p = call->buffer; |
30062bd1 DH |
1536 | p[call->count] = 0; |
1537 | _debug("motd '%s'", p); | |
1538 | ||
1539 | call->unmarshall++; | |
e690c9e3 | 1540 | /* Fall through */ |
35a3a90c | 1541 | |
30062bd1 DH |
1542 | case 8: |
1543 | break; | |
1544 | } | |
1545 | ||
1546 | _leave(" = 0 [done]"); | |
1547 | return 0; | |
1548 | } | |
1549 | ||
30062bd1 DH |
1550 | /* |
1551 | * YFS.GetVolumeStatus operation type | |
1552 | */ | |
1553 | static const struct afs_call_type yfs_RXYFSGetVolumeStatus = { | |
1554 | .name = "YFS.GetVolumeStatus", | |
1555 | .op = yfs_FS_GetVolumeStatus, | |
1556 | .deliver = yfs_deliver_fs_get_volume_status, | |
ffba718e | 1557 | .destructor = afs_flat_call_destructor, |
30062bd1 DH |
1558 | }; |
1559 | ||
1560 | /* | |
1561 | * fetch the status of a volume | |
1562 | */ | |
1563 | int yfs_fs_get_volume_status(struct afs_fs_cursor *fc, | |
1564 | struct afs_volume_status *vs) | |
1565 | { | |
1566 | struct afs_vnode *vnode = fc->vnode; | |
1567 | struct afs_call *call; | |
1568 | struct afs_net *net = afs_v2net(vnode); | |
1569 | __be32 *bp; | |
30062bd1 DH |
1570 | |
1571 | _enter(""); | |
1572 | ||
30062bd1 DH |
1573 | call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus, |
1574 | sizeof(__be32) * 2 + | |
1575 | sizeof(struct yfs_xdr_u64), | |
ffba718e DH |
1576 | max_t(size_t, |
1577 | sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + | |
1578 | sizeof(__be32), | |
1579 | AFSOPAQUEMAX + 1)); | |
1580 | if (!call) | |
30062bd1 | 1581 | return -ENOMEM; |
30062bd1 DH |
1582 | |
1583 | call->key = fc->key; | |
ffba718e | 1584 | call->out_volstatus = vs; |
30062bd1 DH |
1585 | |
1586 | /* marshall the parameters */ | |
1587 | bp = call->request; | |
1588 | bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS); | |
1589 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1590 | bp = xdr_encode_u64(bp, vnode->fid.vid); | |
1591 | yfs_check_req(call, bp); | |
1592 | ||
1593 | afs_use_fs_server(call, fc->cbi); | |
1594 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1595 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1596 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1597 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1598 | } |
1599 | ||
30062bd1 DH |
1600 | /* |
1601 | * YFS.SetLock operation type | |
1602 | */ | |
1603 | static const struct afs_call_type yfs_RXYFSSetLock = { | |
1604 | .name = "YFS.SetLock", | |
1605 | .op = yfs_FS_SetLock, | |
f5e45463 | 1606 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1607 | .done = afs_lock_op_done, |
30062bd1 DH |
1608 | .destructor = afs_flat_call_destructor, |
1609 | }; | |
1610 | ||
1611 | /* | |
1612 | * YFS.ExtendLock operation type | |
1613 | */ | |
1614 | static const struct afs_call_type yfs_RXYFSExtendLock = { | |
1615 | .name = "YFS.ExtendLock", | |
1616 | .op = yfs_FS_ExtendLock, | |
f5e45463 | 1617 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1618 | .done = afs_lock_op_done, |
30062bd1 DH |
1619 | .destructor = afs_flat_call_destructor, |
1620 | }; | |
1621 | ||
1622 | /* | |
1623 | * YFS.ReleaseLock operation type | |
1624 | */ | |
1625 | static const struct afs_call_type yfs_RXYFSReleaseLock = { | |
1626 | .name = "YFS.ReleaseLock", | |
1627 | .op = yfs_FS_ReleaseLock, | |
f5e45463 | 1628 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1629 | .destructor = afs_flat_call_destructor, |
1630 | }; | |
1631 | ||
1632 | /* | |
1633 | * Set a lock on a file | |
1634 | */ | |
a58823ac DH |
1635 | int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type, |
1636 | struct afs_status_cb *scb) | |
30062bd1 DH |
1637 | { |
1638 | struct afs_vnode *vnode = fc->vnode; | |
1639 | struct afs_call *call; | |
1640 | struct afs_net *net = afs_v2net(vnode); | |
1641 | __be32 *bp; | |
1642 | ||
1643 | _enter(""); | |
1644 | ||
1645 | call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock, | |
1646 | sizeof(__be32) * 2 + | |
1647 | sizeof(struct yfs_xdr_YFSFid) + | |
1648 | sizeof(__be32), | |
1649 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1650 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1651 | if (!call) | |
1652 | return -ENOMEM; | |
1653 | ||
1654 | call->key = fc->key; | |
a58823ac DH |
1655 | call->lvnode = vnode; |
1656 | call->out_scb = scb; | |
30062bd1 DH |
1657 | |
1658 | /* marshall the parameters */ | |
1659 | bp = call->request; | |
1660 | bp = xdr_encode_u32(bp, YFSSETLOCK); | |
1661 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1662 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1663 | bp = xdr_encode_u32(bp, type); | |
1664 | yfs_check_req(call, bp); | |
1665 | ||
1666 | afs_use_fs_server(call, fc->cbi); | |
6c6c1d63 | 1667 | trace_afs_make_fs_calli(call, &vnode->fid, type); |
20b8391f | 1668 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1669 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1670 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1671 | } |
1672 | ||
1673 | /* | |
1674 | * extend a lock on a file | |
1675 | */ | |
a58823ac | 1676 | int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1677 | { |
1678 | struct afs_vnode *vnode = fc->vnode; | |
1679 | struct afs_call *call; | |
1680 | struct afs_net *net = afs_v2net(vnode); | |
1681 | __be32 *bp; | |
1682 | ||
1683 | _enter(""); | |
1684 | ||
1685 | call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock, | |
1686 | sizeof(__be32) * 2 + | |
1687 | sizeof(struct yfs_xdr_YFSFid), | |
1688 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1689 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1690 | if (!call) | |
1691 | return -ENOMEM; | |
1692 | ||
1693 | call->key = fc->key; | |
a58823ac DH |
1694 | call->lvnode = vnode; |
1695 | call->out_scb = scb; | |
30062bd1 DH |
1696 | |
1697 | /* marshall the parameters */ | |
1698 | bp = call->request; | |
1699 | bp = xdr_encode_u32(bp, YFSEXTENDLOCK); | |
1700 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1701 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1702 | yfs_check_req(call, bp); | |
1703 | ||
1704 | afs_use_fs_server(call, fc->cbi); | |
1705 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1706 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1707 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1708 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1709 | } |
1710 | ||
1711 | /* | |
1712 | * release a lock on a file | |
1713 | */ | |
a58823ac | 1714 | int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1715 | { |
1716 | struct afs_vnode *vnode = fc->vnode; | |
1717 | struct afs_call *call; | |
1718 | struct afs_net *net = afs_v2net(vnode); | |
1719 | __be32 *bp; | |
1720 | ||
1721 | _enter(""); | |
1722 | ||
1723 | call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock, | |
1724 | sizeof(__be32) * 2 + | |
1725 | sizeof(struct yfs_xdr_YFSFid), | |
1726 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1727 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1728 | if (!call) | |
1729 | return -ENOMEM; | |
1730 | ||
1731 | call->key = fc->key; | |
a58823ac DH |
1732 | call->lvnode = vnode; |
1733 | call->out_scb = scb; | |
30062bd1 DH |
1734 | |
1735 | /* marshall the parameters */ | |
1736 | bp = call->request; | |
1737 | bp = xdr_encode_u32(bp, YFSRELEASELOCK); | |
1738 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1739 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1740 | yfs_check_req(call, bp); | |
1741 | ||
1742 | afs_use_fs_server(call, fc->cbi); | |
1743 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1744 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1745 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1746 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1747 | } |
1748 | ||
30062bd1 DH |
1749 | /* |
1750 | * YFS.FetchStatus operation type | |
1751 | */ | |
1752 | static const struct afs_call_type yfs_RXYFSFetchStatus = { | |
1753 | .name = "YFS.FetchStatus", | |
1754 | .op = yfs_FS_FetchStatus, | |
a58823ac | 1755 | .deliver = yfs_deliver_fs_status_cb_and_volsync, |
30062bd1 DH |
1756 | .destructor = afs_flat_call_destructor, |
1757 | }; | |
1758 | ||
1759 | /* | |
1760 | * Fetch the status information for a fid without needing a vnode handle. | |
1761 | */ | |
1762 | int yfs_fs_fetch_status(struct afs_fs_cursor *fc, | |
1763 | struct afs_net *net, | |
1764 | struct afs_fid *fid, | |
a58823ac | 1765 | struct afs_status_cb *scb, |
30062bd1 DH |
1766 | struct afs_volsync *volsync) |
1767 | { | |
1768 | struct afs_call *call; | |
1769 | __be32 *bp; | |
1770 | ||
1771 | _enter(",%x,{%llx:%llu},,", | |
1772 | key_serial(fc->key), fid->vid, fid->vnode); | |
1773 | ||
1774 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus, | |
1775 | sizeof(__be32) * 2 + | |
1776 | sizeof(struct yfs_xdr_YFSFid), | |
1777 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1778 | sizeof(struct yfs_xdr_YFSCallBack) + | |
1779 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1780 | if (!call) { | |
1781 | fc->ac.error = -ENOMEM; | |
1782 | return -ENOMEM; | |
1783 | } | |
1784 | ||
1785 | call->key = fc->key; | |
a58823ac | 1786 | call->out_scb = scb; |
ffba718e | 1787 | call->out_volsync = volsync; |
30062bd1 DH |
1788 | |
1789 | /* marshall the parameters */ | |
1790 | bp = call->request; | |
1791 | bp = xdr_encode_u32(bp, YFSFETCHSTATUS); | |
1792 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1793 | bp = xdr_encode_YFSFid(bp, fid); | |
1794 | yfs_check_req(call, bp); | |
1795 | ||
30062bd1 DH |
1796 | afs_use_fs_server(call, fc->cbi); |
1797 | trace_afs_make_fs_call(call, fid); | |
20b8391f | 1798 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1799 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1800 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1801 | } |
1802 | ||
1803 | /* | |
1804 | * Deliver reply data to an YFS.InlineBulkStatus call | |
1805 | */ | |
1806 | static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) | |
1807 | { | |
87182759 | 1808 | struct afs_status_cb *scb; |
30062bd1 DH |
1809 | const __be32 *bp; |
1810 | u32 tmp; | |
1811 | int ret; | |
1812 | ||
1813 | _enter("{%u}", call->unmarshall); | |
1814 | ||
1815 | switch (call->unmarshall) { | |
1816 | case 0: | |
1817 | afs_extract_to_tmp(call); | |
1818 | call->unmarshall++; | |
35a3a90c | 1819 | /* Fall through */ |
30062bd1 DH |
1820 | |
1821 | /* Extract the file status count and array in two steps */ | |
1822 | case 1: | |
1823 | _debug("extract status count"); | |
1824 | ret = afs_extract_data(call, true); | |
1825 | if (ret < 0) | |
1826 | return ret; | |
1827 | ||
1828 | tmp = ntohl(call->tmp); | |
1829 | _debug("status count: %u/%u", tmp, call->count2); | |
1830 | if (tmp != call->count2) | |
1831 | return afs_protocol_error(call, -EBADMSG, | |
1832 | afs_eproto_ibulkst_count); | |
1833 | ||
1834 | call->count = 0; | |
1835 | call->unmarshall++; | |
1836 | more_counts: | |
1837 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus)); | |
e690c9e3 | 1838 | /* Fall through */ |
35a3a90c | 1839 | |
30062bd1 DH |
1840 | case 2: |
1841 | _debug("extract status array %u", call->count); | |
1842 | ret = afs_extract_data(call, true); | |
1843 | if (ret < 0) | |
1844 | return ret; | |
1845 | ||
1846 | bp = call->buffer; | |
87182759 | 1847 | scb = &call->out_scb[call->count]; |
a58823ac | 1848 | ret = xdr_decode_YFSFetchStatus(&bp, call, scb); |
30062bd1 DH |
1849 | if (ret < 0) |
1850 | return ret; | |
1851 | ||
1852 | call->count++; | |
1853 | if (call->count < call->count2) | |
1854 | goto more_counts; | |
1855 | ||
1856 | call->count = 0; | |
1857 | call->unmarshall++; | |
1858 | afs_extract_to_tmp(call); | |
35a3a90c | 1859 | /* Fall through */ |
30062bd1 DH |
1860 | |
1861 | /* Extract the callback count and array in two steps */ | |
1862 | case 3: | |
1863 | _debug("extract CB count"); | |
1864 | ret = afs_extract_data(call, true); | |
1865 | if (ret < 0) | |
1866 | return ret; | |
1867 | ||
1868 | tmp = ntohl(call->tmp); | |
1869 | _debug("CB count: %u", tmp); | |
1870 | if (tmp != call->count2) | |
1871 | return afs_protocol_error(call, -EBADMSG, | |
1872 | afs_eproto_ibulkst_cb_count); | |
1873 | call->count = 0; | |
1874 | call->unmarshall++; | |
1875 | more_cbs: | |
1876 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack)); | |
e690c9e3 | 1877 | /* Fall through */ |
35a3a90c | 1878 | |
30062bd1 DH |
1879 | case 4: |
1880 | _debug("extract CB array"); | |
1881 | ret = afs_extract_data(call, true); | |
1882 | if (ret < 0) | |
1883 | return ret; | |
1884 | ||
1885 | _debug("unmarshall CB array"); | |
1886 | bp = call->buffer; | |
87182759 | 1887 | scb = &call->out_scb[call->count]; |
a58823ac | 1888 | xdr_decode_YFSCallBack(&bp, call, scb); |
30062bd1 DH |
1889 | call->count++; |
1890 | if (call->count < call->count2) | |
1891 | goto more_cbs; | |
1892 | ||
1893 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync)); | |
1894 | call->unmarshall++; | |
e690c9e3 | 1895 | /* Fall through */ |
35a3a90c | 1896 | |
30062bd1 DH |
1897 | case 5: |
1898 | ret = afs_extract_data(call, false); | |
1899 | if (ret < 0) | |
1900 | return ret; | |
1901 | ||
1902 | bp = call->buffer; | |
ffba718e | 1903 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1904 | |
1905 | call->unmarshall++; | |
e690c9e3 | 1906 | /* Fall through */ |
35a3a90c | 1907 | |
30062bd1 DH |
1908 | case 6: |
1909 | break; | |
1910 | } | |
1911 | ||
1912 | _leave(" = 0 [done]"); | |
1913 | return 0; | |
1914 | } | |
1915 | ||
1916 | /* | |
1917 | * FS.InlineBulkStatus operation type | |
1918 | */ | |
1919 | static const struct afs_call_type yfs_RXYFSInlineBulkStatus = { | |
1920 | .name = "YFS.InlineBulkStatus", | |
1921 | .op = yfs_FS_InlineBulkStatus, | |
1922 | .deliver = yfs_deliver_fs_inline_bulk_status, | |
1923 | .destructor = afs_flat_call_destructor, | |
1924 | }; | |
1925 | ||
1926 | /* | |
1927 | * Fetch the status information for up to 1024 files | |
1928 | */ | |
1929 | int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, | |
1930 | struct afs_net *net, | |
1931 | struct afs_fid *fids, | |
87182759 | 1932 | struct afs_status_cb *statuses, |
30062bd1 DH |
1933 | unsigned int nr_fids, |
1934 | struct afs_volsync *volsync) | |
1935 | { | |
1936 | struct afs_call *call; | |
1937 | __be32 *bp; | |
1938 | int i; | |
1939 | ||
1940 | _enter(",%x,{%llx:%llu},%u", | |
1941 | key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids); | |
1942 | ||
1943 | call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus, | |
1944 | sizeof(__be32) + | |
1945 | sizeof(__be32) + | |
1946 | sizeof(__be32) + | |
1947 | sizeof(struct yfs_xdr_YFSFid) * nr_fids, | |
1948 | sizeof(struct yfs_xdr_YFSFetchStatus)); | |
1949 | if (!call) { | |
1950 | fc->ac.error = -ENOMEM; | |
1951 | return -ENOMEM; | |
1952 | } | |
1953 | ||
1954 | call->key = fc->key; | |
87182759 | 1955 | call->out_scb = statuses; |
ffba718e | 1956 | call->out_volsync = volsync; |
30062bd1 DH |
1957 | call->count2 = nr_fids; |
1958 | ||
1959 | /* marshall the parameters */ | |
1960 | bp = call->request; | |
1961 | bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS); | |
1962 | bp = xdr_encode_u32(bp, 0); /* RPCFlags */ | |
1963 | bp = xdr_encode_u32(bp, nr_fids); | |
1964 | for (i = 0; i < nr_fids; i++) | |
1965 | bp = xdr_encode_YFSFid(bp, &fids[i]); | |
1966 | yfs_check_req(call, bp); | |
1967 | ||
30062bd1 DH |
1968 | afs_use_fs_server(call, fc->cbi); |
1969 | trace_afs_make_fs_call(call, &fids[0]); | |
20b8391f | 1970 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1971 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1972 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 1973 | } |
ae46578b DH |
1974 | |
1975 | /* | |
1976 | * Deliver reply data to an YFS.FetchOpaqueACL. | |
1977 | */ | |
1978 | static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) | |
1979 | { | |
ffba718e | 1980 | struct yfs_acl *yacl = call->out_yacl; |
ae46578b DH |
1981 | struct afs_acl *acl; |
1982 | const __be32 *bp; | |
1983 | unsigned int size; | |
1984 | int ret; | |
1985 | ||
1986 | _enter("{%u}", call->unmarshall); | |
1987 | ||
1988 | switch (call->unmarshall) { | |
1989 | case 0: | |
1990 | afs_extract_to_tmp(call); | |
1991 | call->unmarshall++; | |
35a3a90c | 1992 | /* Fall through */ |
ae46578b DH |
1993 | |
1994 | /* Extract the file ACL length */ | |
1995 | case 1: | |
1996 | ret = afs_extract_data(call, true); | |
1997 | if (ret < 0) | |
1998 | return ret; | |
1999 | ||
2000 | size = call->count2 = ntohl(call->tmp); | |
2001 | size = round_up(size, 4); | |
2002 | ||
2003 | if (yacl->flags & YFS_ACL_WANT_ACL) { | |
2004 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2005 | if (!acl) | |
2006 | return -ENOMEM; | |
2007 | yacl->acl = acl; | |
2008 | acl->size = call->count2; | |
2009 | afs_extract_begin(call, acl->data, size); | |
2010 | } else { | |
23a28913 | 2011 | afs_extract_discard(call, size); |
ae46578b DH |
2012 | } |
2013 | call->unmarshall++; | |
35a3a90c | 2014 | /* Fall through */ |
ae46578b DH |
2015 | |
2016 | /* Extract the file ACL */ | |
2017 | case 2: | |
2018 | ret = afs_extract_data(call, true); | |
2019 | if (ret < 0) | |
2020 | return ret; | |
2021 | ||
2022 | afs_extract_to_tmp(call); | |
2023 | call->unmarshall++; | |
35a3a90c | 2024 | /* Fall through */ |
ae46578b DH |
2025 | |
2026 | /* Extract the volume ACL length */ | |
2027 | case 3: | |
2028 | ret = afs_extract_data(call, true); | |
2029 | if (ret < 0) | |
2030 | return ret; | |
2031 | ||
2032 | size = call->count2 = ntohl(call->tmp); | |
2033 | size = round_up(size, 4); | |
2034 | ||
2035 | if (yacl->flags & YFS_ACL_WANT_VOL_ACL) { | |
2036 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2037 | if (!acl) | |
2038 | return -ENOMEM; | |
2039 | yacl->vol_acl = acl; | |
2040 | acl->size = call->count2; | |
2041 | afs_extract_begin(call, acl->data, size); | |
2042 | } else { | |
23a28913 | 2043 | afs_extract_discard(call, size); |
ae46578b DH |
2044 | } |
2045 | call->unmarshall++; | |
35a3a90c | 2046 | /* Fall through */ |
ae46578b DH |
2047 | |
2048 | /* Extract the volume ACL */ | |
2049 | case 4: | |
2050 | ret = afs_extract_data(call, true); | |
2051 | if (ret < 0) | |
2052 | return ret; | |
2053 | ||
2054 | afs_extract_to_buf(call, | |
2055 | sizeof(__be32) * 2 + | |
2056 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2057 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2058 | call->unmarshall++; | |
35a3a90c | 2059 | /* Fall through */ |
ae46578b DH |
2060 | |
2061 | /* extract the metadata */ | |
2062 | case 5: | |
2063 | ret = afs_extract_data(call, false); | |
2064 | if (ret < 0) | |
2065 | return ret; | |
2066 | ||
2067 | bp = call->buffer; | |
2068 | yacl->inherit_flag = ntohl(*bp++); | |
2069 | yacl->num_cleaned = ntohl(*bp++); | |
a58823ac | 2070 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
ae46578b DH |
2071 | if (ret < 0) |
2072 | return ret; | |
a58823ac | 2073 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
ae46578b DH |
2074 | |
2075 | call->unmarshall++; | |
35a3a90c | 2076 | /* Fall through */ |
ae46578b DH |
2077 | |
2078 | case 6: | |
2079 | break; | |
2080 | } | |
2081 | ||
2082 | _leave(" = 0 [done]"); | |
2083 | return 0; | |
2084 | } | |
2085 | ||
2086 | void yfs_free_opaque_acl(struct yfs_acl *yacl) | |
2087 | { | |
2088 | if (yacl) { | |
2089 | kfree(yacl->acl); | |
2090 | kfree(yacl->vol_acl); | |
2091 | kfree(yacl); | |
2092 | } | |
2093 | } | |
2094 | ||
ae46578b DH |
2095 | /* |
2096 | * YFS.FetchOpaqueACL operation type | |
2097 | */ | |
2098 | static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { | |
2099 | .name = "YFS.FetchOpaqueACL", | |
2100 | .op = yfs_FS_FetchOpaqueACL, | |
2101 | .deliver = yfs_deliver_fs_fetch_opaque_acl, | |
773e0c40 | 2102 | .destructor = afs_flat_call_destructor, |
ae46578b DH |
2103 | }; |
2104 | ||
2105 | /* | |
2106 | * Fetch the YFS advanced ACLs for a file. | |
2107 | */ | |
2108 | struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, | |
a58823ac DH |
2109 | struct yfs_acl *yacl, |
2110 | struct afs_status_cb *scb) | |
ae46578b DH |
2111 | { |
2112 | struct afs_vnode *vnode = fc->vnode; | |
2113 | struct afs_call *call; | |
ae46578b DH |
2114 | struct afs_net *net = afs_v2net(vnode); |
2115 | __be32 *bp; | |
2116 | ||
2117 | _enter(",%x,{%llx:%llu},,", | |
2118 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2119 | ||
2120 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL, | |
2121 | sizeof(__be32) * 2 + | |
2122 | sizeof(struct yfs_xdr_YFSFid), | |
2123 | sizeof(__be32) * 2 + | |
2124 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2125 | sizeof(struct yfs_xdr_YFSVolSync)); | |
773e0c40 DH |
2126 | if (!call) { |
2127 | fc->ac.error = -ENOMEM; | |
2128 | return ERR_PTR(-ENOMEM); | |
2129 | } | |
ae46578b | 2130 | |
ae46578b | 2131 | call->key = fc->key; |
ffba718e | 2132 | call->out_yacl = yacl; |
a58823ac DH |
2133 | call->out_scb = scb; |
2134 | call->out_volsync = NULL; | |
ae46578b DH |
2135 | |
2136 | /* marshall the parameters */ | |
2137 | bp = call->request; | |
2138 | bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL); | |
2139 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2140 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2141 | yfs_check_req(call, bp); | |
2142 | ||
ae46578b DH |
2143 | afs_use_fs_server(call, fc->cbi); |
2144 | trace_afs_make_fs_call(call, &vnode->fid); | |
2145 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2146 | return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac); | |
ae46578b | 2147 | } |
f5e45463 DH |
2148 | |
2149 | /* | |
2150 | * YFS.StoreOpaqueACL2 operation type | |
2151 | */ | |
2152 | static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { | |
2153 | .name = "YFS.StoreOpaqueACL2", | |
2154 | .op = yfs_FS_StoreOpaqueACL2, | |
2155 | .deliver = yfs_deliver_status_and_volsync, | |
2156 | .destructor = afs_flat_call_destructor, | |
2157 | }; | |
2158 | ||
2159 | /* | |
2160 | * Fetch the YFS ACL for a file. | |
2161 | */ | |
a58823ac DH |
2162 | int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl, |
2163 | struct afs_status_cb *scb) | |
f5e45463 DH |
2164 | { |
2165 | struct afs_vnode *vnode = fc->vnode; | |
2166 | struct afs_call *call; | |
2167 | struct afs_net *net = afs_v2net(vnode); | |
2168 | size_t size; | |
2169 | __be32 *bp; | |
2170 | ||
2171 | _enter(",%x,{%llx:%llu},,", | |
2172 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2173 | ||
2174 | size = round_up(acl->size, 4); | |
7533be85 | 2175 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2, |
f5e45463 DH |
2176 | sizeof(__be32) * 2 + |
2177 | sizeof(struct yfs_xdr_YFSFid) + | |
2178 | sizeof(__be32) + size, | |
2179 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2180 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2181 | if (!call) { | |
2182 | fc->ac.error = -ENOMEM; | |
2183 | return -ENOMEM; | |
2184 | } | |
2185 | ||
2186 | call->key = fc->key; | |
a58823ac | 2187 | call->out_scb = scb; |
ffba718e | 2188 | call->out_volsync = NULL; |
f5e45463 DH |
2189 | |
2190 | /* marshall the parameters */ | |
2191 | bp = call->request; | |
2192 | bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2); | |
2193 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2194 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2195 | bp = xdr_encode_u32(bp, acl->size); | |
2196 | memcpy(bp, acl->data, acl->size); | |
2197 | if (acl->size != size) | |
2198 | memset((void *)bp + acl->size, 0, size - acl->size); | |
2199 | yfs_check_req(call, bp); | |
2200 | ||
2201 | trace_afs_make_fs_call(call, &vnode->fid); | |
2202 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2203 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 2204 | } |