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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) | |
155 | pr_warning("kAFS: %s: Request buffer underflow (%zu<%u)\n", | |
156 | call->type->name, len, call->request_size); | |
157 | } | |
158 | ||
159 | /* | |
160 | * Dump a bad file status record. | |
161 | */ | |
162 | static void xdr_dump_bad(const __be32 *bp) | |
163 | { | |
164 | __be32 x[4]; | |
165 | int i; | |
166 | ||
167 | pr_notice("YFS XDR: Bad status record\n"); | |
168 | for (i = 0; i < 5 * 4 * 4; i += 16) { | |
169 | memcpy(x, bp, 16); | |
170 | bp += 4; | |
171 | pr_notice("%03x: %08x %08x %08x %08x\n", | |
172 | i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); | |
173 | } | |
174 | ||
175 | memcpy(x, bp, 4); | |
176 | pr_notice("0x50: %08x\n", ntohl(x[0])); | |
177 | } | |
178 | ||
179 | /* | |
180 | * Decode a YFSFetchStatus block | |
181 | */ | |
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; |
30062bd1 DH |
189 | |
190 | status->abort_code = ntohl(xdr->abort_code); | |
191 | if (status->abort_code != 0) { | |
a58823ac | 192 | if (status->abort_code == VNOVNODE) |
30062bd1 | 193 | status->nlink = 0; |
a38a7558 | 194 | scb->have_error = true; |
30062bd1 DH |
195 | return 0; |
196 | } | |
197 | ||
198 | type = ntohl(xdr->type); | |
199 | switch (type) { | |
200 | case AFS_FTYPE_FILE: | |
201 | case AFS_FTYPE_DIR: | |
202 | case AFS_FTYPE_SYMLINK: | |
30062bd1 DH |
203 | status->type = type; |
204 | break; | |
205 | default: | |
206 | goto bad; | |
207 | } | |
208 | ||
a58823ac DH |
209 | status->nlink = ntohl(xdr->nlink); |
210 | status->author = xdr_to_u64(xdr->author); | |
211 | status->owner = xdr_to_u64(xdr->owner); | |
212 | status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ | |
213 | status->anon_access = ntohl(xdr->anon_access); | |
214 | status->mode = ntohl(xdr->mode) & S_IALLUGO; | |
215 | status->group = xdr_to_u64(xdr->group); | |
216 | status->lock_count = ntohl(xdr->lock_count); | |
30062bd1 | 217 | |
a58823ac DH |
218 | status->mtime_client = xdr_to_time(xdr->mtime_client); |
219 | status->mtime_server = xdr_to_time(xdr->mtime_server); | |
220 | status->size = xdr_to_u64(xdr->size); | |
221 | status->data_version = xdr_to_u64(xdr->data_version); | |
a38a7558 | 222 | scb->have_status = true; |
30062bd1 | 223 | |
a58823ac | 224 | *_bp += xdr_size(xdr); |
30062bd1 DH |
225 | return 0; |
226 | ||
227 | bad: | |
228 | xdr_dump_bad(*_bp); | |
229 | return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status); | |
230 | } | |
231 | ||
232 | /* | |
a58823ac | 233 | * Decode a YFSCallBack block |
30062bd1 | 234 | */ |
a58823ac DH |
235 | static void xdr_decode_YFSCallBack(const __be32 **_bp, |
236 | struct afs_call *call, | |
237 | struct afs_status_cb *scb) | |
78107055 DH |
238 | { |
239 | struct yfs_xdr_YFSCallBack *x = (void *)*_bp; | |
a58823ac | 240 | struct afs_callback *cb = &scb->callback; |
78107055 DH |
241 | ktime_t cb_expiry; |
242 | ||
243 | cb_expiry = call->reply_time; | |
244 | cb_expiry = ktime_add(cb_expiry, xdr_to_u64(x->expiration_time) * 100); | |
245 | cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC); | |
a58823ac | 246 | scb->have_cb = true; |
78107055 DH |
247 | *_bp += xdr_size(x); |
248 | } | |
249 | ||
30062bd1 DH |
250 | /* |
251 | * Decode a YFSVolSync block | |
252 | */ | |
253 | static void xdr_decode_YFSVolSync(const __be32 **_bp, | |
254 | struct afs_volsync *volsync) | |
255 | { | |
256 | struct yfs_xdr_YFSVolSync *x = (void *)*_bp; | |
257 | u64 creation; | |
258 | ||
259 | if (volsync) { | |
260 | creation = xdr_to_u64(x->vol_creation_date); | |
261 | do_div(creation, 10 * 1000 * 1000); | |
262 | volsync->creation = creation; | |
263 | } | |
264 | ||
265 | *_bp += xdr_size(x); | |
266 | } | |
267 | ||
268 | /* | |
269 | * Encode the requested attributes into a YFSStoreStatus block | |
270 | */ | |
271 | static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr) | |
272 | { | |
273 | struct yfs_xdr_YFSStoreStatus *x = (void *)bp; | |
274 | s64 mtime = 0, owner = 0, group = 0; | |
275 | u32 mask = 0, mode = 0; | |
276 | ||
277 | mask = 0; | |
278 | if (attr->ia_valid & ATTR_MTIME) { | |
279 | mask |= AFS_SET_MTIME; | |
280 | mtime = linux_to_yfs_time(&attr->ia_mtime); | |
281 | } | |
282 | ||
283 | if (attr->ia_valid & ATTR_UID) { | |
284 | mask |= AFS_SET_OWNER; | |
285 | owner = from_kuid(&init_user_ns, attr->ia_uid); | |
286 | } | |
287 | ||
288 | if (attr->ia_valid & ATTR_GID) { | |
289 | mask |= AFS_SET_GROUP; | |
290 | group = from_kgid(&init_user_ns, attr->ia_gid); | |
291 | } | |
292 | ||
293 | if (attr->ia_valid & ATTR_MODE) { | |
294 | mask |= AFS_SET_MODE; | |
295 | mode = attr->ia_mode & S_IALLUGO; | |
296 | } | |
297 | ||
298 | x->mask = htonl(mask); | |
299 | x->mode = htonl(mode); | |
300 | x->mtime_client = u64_to_xdr(mtime); | |
301 | x->owner = u64_to_xdr(owner); | |
302 | x->group = u64_to_xdr(group); | |
303 | return bp + xdr_size(x); | |
304 | } | |
305 | ||
306 | /* | |
307 | * Decode a YFSFetchVolumeStatus block. | |
308 | */ | |
309 | static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp, | |
310 | struct afs_volume_status *vs) | |
311 | { | |
312 | const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp; | |
313 | u32 flags; | |
314 | ||
315 | vs->vid = xdr_to_u64(x->vid); | |
316 | vs->parent_id = xdr_to_u64(x->parent_id); | |
317 | flags = ntohl(x->flags); | |
318 | vs->online = flags & yfs_FVSOnline; | |
319 | vs->in_service = flags & yfs_FVSInservice; | |
320 | vs->blessed = flags & yfs_FVSBlessed; | |
321 | vs->needs_salvage = flags & yfs_FVSNeedsSalvage; | |
322 | vs->type = ntohl(x->type); | |
323 | vs->min_quota = 0; | |
324 | vs->max_quota = xdr_to_u64(x->max_quota); | |
325 | vs->blocks_in_use = xdr_to_u64(x->blocks_in_use); | |
326 | vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail); | |
327 | vs->part_max_blocks = xdr_to_u64(x->part_max_blocks); | |
328 | vs->vol_copy_date = xdr_to_u64(x->vol_copy_date); | |
329 | vs->vol_backup_date = xdr_to_u64(x->vol_backup_date); | |
330 | *_bp += sizeof(*x) / sizeof(__be32); | |
331 | } | |
332 | ||
333 | /* | |
a58823ac | 334 | * Deliver a reply that's a status, callback and volsync. |
30062bd1 | 335 | */ |
a58823ac | 336 | static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call) |
30062bd1 | 337 | { |
30062bd1 DH |
338 | const __be32 *bp; |
339 | int ret; | |
340 | ||
341 | ret = afs_transfer_reply(call); | |
342 | if (ret < 0) | |
343 | return ret; | |
344 | ||
30062bd1 DH |
345 | /* unmarshall the reply once we've received all of it */ |
346 | bp = call->buffer; | |
a58823ac DH |
347 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
348 | if (ret < 0) | |
349 | return ret; | |
350 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); | |
351 | xdr_decode_YFSVolSync(&bp, call->out_volsync); | |
352 | ||
353 | _leave(" = 0 [done]"); | |
354 | return 0; | |
355 | } | |
356 | ||
357 | /* | |
358 | * Deliver reply data to operations that just return a file status and a volume | |
359 | * sync record. | |
360 | */ | |
361 | static int yfs_deliver_status_and_volsync(struct afs_call *call) | |
362 | { | |
363 | const __be32 *bp; | |
364 | int ret; | |
365 | ||
366 | ret = afs_transfer_reply(call); | |
367 | if (ret < 0) | |
368 | return ret; | |
369 | ||
370 | bp = call->buffer; | |
371 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); | |
30062bd1 DH |
372 | if (ret < 0) |
373 | return ret; | |
ffba718e | 374 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
375 | |
376 | _leave(" = 0 [done]"); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | /* | |
381 | * YFS.FetchStatus operation type | |
382 | */ | |
383 | static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = { | |
384 | .name = "YFS.FetchStatus(vnode)", | |
385 | .op = yfs_FS_FetchStatus, | |
a58823ac | 386 | .deliver = yfs_deliver_fs_status_cb_and_volsync, |
30062bd1 DH |
387 | .destructor = afs_flat_call_destructor, |
388 | }; | |
389 | ||
390 | /* | |
391 | * Fetch the status information for a file. | |
392 | */ | |
a58823ac DH |
393 | int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb, |
394 | struct afs_volsync *volsync) | |
30062bd1 DH |
395 | { |
396 | struct afs_vnode *vnode = fc->vnode; | |
397 | struct afs_call *call; | |
398 | struct afs_net *net = afs_v2net(vnode); | |
399 | __be32 *bp; | |
400 | ||
401 | _enter(",%x,{%llx:%llu},,", | |
402 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
403 | ||
404 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode, | |
405 | sizeof(__be32) * 2 + | |
406 | sizeof(struct yfs_xdr_YFSFid), | |
407 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
408 | sizeof(struct yfs_xdr_YFSCallBack) + | |
409 | sizeof(struct yfs_xdr_YFSVolSync)); | |
410 | if (!call) { | |
411 | fc->ac.error = -ENOMEM; | |
412 | return -ENOMEM; | |
413 | } | |
414 | ||
415 | call->key = fc->key; | |
a58823ac | 416 | call->out_scb = scb; |
ffba718e | 417 | call->out_volsync = volsync; |
30062bd1 DH |
418 | |
419 | /* marshall the parameters */ | |
420 | bp = call->request; | |
421 | bp = xdr_encode_u32(bp, YFSFETCHSTATUS); | |
422 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
423 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
424 | yfs_check_req(call, bp); | |
425 | ||
30062bd1 DH |
426 | afs_use_fs_server(call, fc->cbi); |
427 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 428 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
429 | afs_make_call(&fc->ac, call, GFP_NOFS); |
430 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
431 | } |
432 | ||
433 | /* | |
434 | * Deliver reply data to an YFS.FetchData64. | |
435 | */ | |
436 | static int yfs_deliver_fs_fetch_data64(struct afs_call *call) | |
437 | { | |
ffba718e | 438 | struct afs_read *req = call->read_request; |
30062bd1 DH |
439 | const __be32 *bp; |
440 | unsigned int size; | |
441 | int ret; | |
442 | ||
443 | _enter("{%u,%zu/%llu}", | |
444 | call->unmarshall, iov_iter_count(&call->iter), req->actual_len); | |
445 | ||
446 | switch (call->unmarshall) { | |
447 | case 0: | |
448 | req->actual_len = 0; | |
449 | req->index = 0; | |
450 | req->offset = req->pos & (PAGE_SIZE - 1); | |
451 | afs_extract_to_tmp64(call); | |
452 | call->unmarshall++; | |
35a3a90c | 453 | /* Fall through */ |
30062bd1 | 454 | |
35a3a90c | 455 | /* extract the returned data length */ |
30062bd1 DH |
456 | case 1: |
457 | _debug("extract data length"); | |
458 | ret = afs_extract_data(call, true); | |
459 | if (ret < 0) | |
460 | return ret; | |
461 | ||
462 | req->actual_len = be64_to_cpu(call->tmp64); | |
463 | _debug("DATA length: %llu", req->actual_len); | |
464 | req->remain = min(req->len, req->actual_len); | |
465 | if (req->remain == 0) | |
466 | goto no_more_data; | |
467 | ||
468 | call->unmarshall++; | |
469 | ||
470 | begin_page: | |
471 | ASSERTCMP(req->index, <, req->nr_pages); | |
472 | if (req->remain > PAGE_SIZE - req->offset) | |
473 | size = PAGE_SIZE - req->offset; | |
474 | else | |
475 | size = req->remain; | |
476 | call->bvec[0].bv_len = size; | |
477 | call->bvec[0].bv_offset = req->offset; | |
478 | call->bvec[0].bv_page = req->pages[req->index]; | |
479 | iov_iter_bvec(&call->iter, READ, call->bvec, 1, size); | |
480 | ASSERTCMP(size, <=, PAGE_SIZE); | |
35a3a90c | 481 | /* Fall through */ |
30062bd1 | 482 | |
35a3a90c | 483 | /* extract the returned data */ |
30062bd1 DH |
484 | case 2: |
485 | _debug("extract data %zu/%llu", | |
486 | iov_iter_count(&call->iter), req->remain); | |
487 | ||
488 | ret = afs_extract_data(call, true); | |
489 | if (ret < 0) | |
490 | return ret; | |
491 | req->remain -= call->bvec[0].bv_len; | |
492 | req->offset += call->bvec[0].bv_len; | |
493 | ASSERTCMP(req->offset, <=, PAGE_SIZE); | |
494 | if (req->offset == PAGE_SIZE) { | |
495 | req->offset = 0; | |
496 | if (req->page_done) | |
a58823ac | 497 | req->page_done(req); |
30062bd1 DH |
498 | req->index++; |
499 | if (req->remain > 0) | |
500 | goto begin_page; | |
501 | } | |
502 | ||
503 | ASSERTCMP(req->remain, ==, 0); | |
504 | if (req->actual_len <= req->len) | |
505 | goto no_more_data; | |
506 | ||
507 | /* Discard any excess data the server gave us */ | |
508 | iov_iter_discard(&call->iter, READ, req->actual_len - req->len); | |
509 | call->unmarshall = 3; | |
e690c9e3 | 510 | /* Fall through */ |
35a3a90c | 511 | |
30062bd1 DH |
512 | case 3: |
513 | _debug("extract discard %zu/%llu", | |
514 | iov_iter_count(&call->iter), req->actual_len - req->len); | |
515 | ||
516 | ret = afs_extract_data(call, true); | |
517 | if (ret < 0) | |
518 | return ret; | |
519 | ||
520 | no_more_data: | |
521 | call->unmarshall = 4; | |
522 | afs_extract_to_buf(call, | |
523 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
524 | sizeof(struct yfs_xdr_YFSCallBack) + | |
525 | sizeof(struct yfs_xdr_YFSVolSync)); | |
35a3a90c | 526 | /* Fall through */ |
30062bd1 | 527 | |
35a3a90c | 528 | /* extract the metadata */ |
30062bd1 DH |
529 | case 4: |
530 | ret = afs_extract_data(call, false); | |
531 | if (ret < 0) | |
532 | return ret; | |
533 | ||
534 | bp = call->buffer; | |
a58823ac | 535 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
536 | if (ret < 0) |
537 | return ret; | |
a58823ac | 538 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
ffba718e | 539 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 | 540 | |
a58823ac DH |
541 | req->data_version = call->out_scb->status.data_version; |
542 | req->file_size = call->out_scb->status.size; | |
543 | ||
30062bd1 | 544 | call->unmarshall++; |
e690c9e3 | 545 | /* Fall through */ |
35a3a90c | 546 | |
30062bd1 DH |
547 | case 5: |
548 | break; | |
549 | } | |
550 | ||
551 | for (; req->index < req->nr_pages; req->index++) { | |
552 | if (req->offset < PAGE_SIZE) | |
553 | zero_user_segment(req->pages[req->index], | |
554 | req->offset, PAGE_SIZE); | |
555 | if (req->page_done) | |
a58823ac | 556 | req->page_done(req); |
30062bd1 DH |
557 | req->offset = 0; |
558 | } | |
559 | ||
560 | _leave(" = 0 [done]"); | |
561 | return 0; | |
562 | } | |
563 | ||
564 | static void yfs_fetch_data_destructor(struct afs_call *call) | |
565 | { | |
ffba718e | 566 | afs_put_read(call->read_request); |
30062bd1 DH |
567 | afs_flat_call_destructor(call); |
568 | } | |
569 | ||
570 | /* | |
571 | * YFS.FetchData64 operation type | |
572 | */ | |
573 | static const struct afs_call_type yfs_RXYFSFetchData64 = { | |
574 | .name = "YFS.FetchData64", | |
575 | .op = yfs_FS_FetchData64, | |
576 | .deliver = yfs_deliver_fs_fetch_data64, | |
577 | .destructor = yfs_fetch_data_destructor, | |
578 | }; | |
579 | ||
580 | /* | |
581 | * Fetch data from a file. | |
582 | */ | |
a58823ac DH |
583 | int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb, |
584 | struct afs_read *req) | |
30062bd1 DH |
585 | { |
586 | struct afs_vnode *vnode = fc->vnode; | |
587 | struct afs_call *call; | |
588 | struct afs_net *net = afs_v2net(vnode); | |
589 | __be32 *bp; | |
590 | ||
591 | _enter(",%x,{%llx:%llu},%llx,%llx", | |
592 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode, | |
593 | req->pos, req->len); | |
594 | ||
595 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64, | |
596 | sizeof(__be32) * 2 + | |
597 | sizeof(struct yfs_xdr_YFSFid) + | |
598 | sizeof(struct yfs_xdr_u64) * 2, | |
599 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
600 | sizeof(struct yfs_xdr_YFSCallBack) + | |
601 | sizeof(struct yfs_xdr_YFSVolSync)); | |
602 | if (!call) | |
603 | return -ENOMEM; | |
604 | ||
605 | call->key = fc->key; | |
a58823ac | 606 | call->out_scb = scb; |
ffba718e DH |
607 | call->out_volsync = NULL; |
608 | call->read_request = req; | |
30062bd1 DH |
609 | |
610 | /* marshall the parameters */ | |
611 | bp = call->request; | |
612 | bp = xdr_encode_u32(bp, YFSFETCHDATA64); | |
613 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
614 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
615 | bp = xdr_encode_u64(bp, req->pos); | |
616 | bp = xdr_encode_u64(bp, req->len); | |
617 | yfs_check_req(call, bp); | |
618 | ||
619 | refcount_inc(&req->usage); | |
30062bd1 DH |
620 | afs_use_fs_server(call, fc->cbi); |
621 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 622 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
623 | afs_make_call(&fc->ac, call, GFP_NOFS); |
624 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
625 | } |
626 | ||
627 | /* | |
628 | * Deliver reply data for YFS.CreateFile or YFS.MakeDir. | |
629 | */ | |
630 | static int yfs_deliver_fs_create_vnode(struct afs_call *call) | |
631 | { | |
30062bd1 DH |
632 | const __be32 *bp; |
633 | int ret; | |
634 | ||
635 | _enter("{%u}", call->unmarshall); | |
636 | ||
637 | ret = afs_transfer_reply(call); | |
638 | if (ret < 0) | |
639 | return ret; | |
640 | ||
641 | /* unmarshall the reply once we've received all of it */ | |
642 | bp = call->buffer; | |
ffba718e | 643 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 644 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
645 | if (ret < 0) |
646 | return ret; | |
a58823ac | 647 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
648 | if (ret < 0) |
649 | return ret; | |
a58823ac DH |
650 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
651 | xdr_decode_YFSVolSync(&bp, call->out_volsync); | |
30062bd1 DH |
652 | |
653 | _leave(" = 0 [done]"); | |
654 | return 0; | |
655 | } | |
656 | ||
657 | /* | |
658 | * FS.CreateFile and FS.MakeDir operation type | |
659 | */ | |
660 | static const struct afs_call_type afs_RXFSCreateFile = { | |
661 | .name = "YFS.CreateFile", | |
662 | .op = yfs_FS_CreateFile, | |
663 | .deliver = yfs_deliver_fs_create_vnode, | |
664 | .destructor = afs_flat_call_destructor, | |
665 | }; | |
666 | ||
667 | /* | |
668 | * Create a file. | |
669 | */ | |
670 | int yfs_fs_create_file(struct afs_fs_cursor *fc, | |
671 | const char *name, | |
672 | umode_t mode, | |
a58823ac | 673 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 674 | struct afs_fid *newfid, |
a58823ac | 675 | struct afs_status_cb *new_scb) |
30062bd1 | 676 | { |
ffba718e | 677 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 678 | struct afs_call *call; |
ffba718e | 679 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
680 | size_t namesz, reqsz, rplsz; |
681 | __be32 *bp; | |
682 | ||
683 | _enter(""); | |
684 | ||
685 | namesz = strlen(name); | |
686 | reqsz = (sizeof(__be32) + | |
687 | sizeof(__be32) + | |
688 | sizeof(struct yfs_xdr_YFSFid) + | |
689 | xdr_strlen(namesz) + | |
690 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
691 | sizeof(__be32)); | |
692 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
693 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
694 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
695 | sizeof(struct yfs_xdr_YFSCallBack) + | |
696 | sizeof(struct yfs_xdr_YFSVolSync)); | |
697 | ||
698 | call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz); | |
699 | if (!call) | |
700 | return -ENOMEM; | |
701 | ||
702 | call->key = fc->key; | |
a58823ac | 703 | call->out_dir_scb = dvnode_scb; |
ffba718e | 704 | call->out_fid = newfid; |
a58823ac | 705 | call->out_scb = new_scb; |
30062bd1 DH |
706 | |
707 | /* marshall the parameters */ | |
708 | bp = call->request; | |
709 | bp = xdr_encode_u32(bp, YFSCREATEFILE); | |
710 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 711 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
712 | bp = xdr_encode_string(bp, name, namesz); |
713 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
5edc22cc | 714 | bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */ |
30062bd1 DH |
715 | yfs_check_req(call, bp); |
716 | ||
717 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 718 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 719 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
720 | afs_make_call(&fc->ac, call, GFP_NOFS); |
721 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
722 | } |
723 | ||
724 | static const struct afs_call_type yfs_RXFSMakeDir = { | |
725 | .name = "YFS.MakeDir", | |
726 | .op = yfs_FS_MakeDir, | |
727 | .deliver = yfs_deliver_fs_create_vnode, | |
728 | .destructor = afs_flat_call_destructor, | |
729 | }; | |
730 | ||
731 | /* | |
732 | * Make a directory. | |
733 | */ | |
734 | int yfs_fs_make_dir(struct afs_fs_cursor *fc, | |
735 | const char *name, | |
736 | umode_t mode, | |
a58823ac | 737 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 738 | struct afs_fid *newfid, |
a58823ac | 739 | struct afs_status_cb *new_scb) |
30062bd1 | 740 | { |
ffba718e | 741 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 742 | struct afs_call *call; |
ffba718e | 743 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
744 | size_t namesz, reqsz, rplsz; |
745 | __be32 *bp; | |
746 | ||
747 | _enter(""); | |
748 | ||
749 | namesz = strlen(name); | |
750 | reqsz = (sizeof(__be32) + | |
751 | sizeof(struct yfs_xdr_RPCFlags) + | |
752 | sizeof(struct yfs_xdr_YFSFid) + | |
753 | xdr_strlen(namesz) + | |
754 | sizeof(struct yfs_xdr_YFSStoreStatus)); | |
755 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
756 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
757 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
758 | sizeof(struct yfs_xdr_YFSCallBack) + | |
759 | sizeof(struct yfs_xdr_YFSVolSync)); | |
760 | ||
761 | call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz); | |
762 | if (!call) | |
763 | return -ENOMEM; | |
764 | ||
765 | call->key = fc->key; | |
a58823ac | 766 | call->out_dir_scb = dvnode_scb; |
ffba718e | 767 | call->out_fid = newfid; |
a58823ac | 768 | call->out_scb = new_scb; |
30062bd1 DH |
769 | |
770 | /* marshall the parameters */ | |
771 | bp = call->request; | |
772 | bp = xdr_encode_u32(bp, YFSMAKEDIR); | |
773 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 774 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
775 | bp = xdr_encode_string(bp, name, namesz); |
776 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
777 | yfs_check_req(call, bp); | |
778 | ||
779 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 780 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 781 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
782 | afs_make_call(&fc->ac, call, GFP_NOFS); |
783 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
784 | } |
785 | ||
786 | /* | |
787 | * Deliver reply data to a YFS.RemoveFile2 operation. | |
788 | */ | |
789 | static int yfs_deliver_fs_remove_file2(struct afs_call *call) | |
790 | { | |
30062bd1 DH |
791 | struct afs_fid fid; |
792 | const __be32 *bp; | |
793 | int ret; | |
794 | ||
795 | _enter("{%u}", call->unmarshall); | |
796 | ||
797 | ret = afs_transfer_reply(call); | |
798 | if (ret < 0) | |
799 | return ret; | |
800 | ||
30062bd1 | 801 | bp = call->buffer; |
a58823ac | 802 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
803 | if (ret < 0) |
804 | return ret; | |
805 | ||
806 | xdr_decode_YFSFid(&bp, &fid); | |
a58823ac | 807 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
808 | if (ret < 0) |
809 | return ret; | |
810 | /* Was deleted if vnode->status.abort_code == VNOVNODE. */ | |
811 | ||
a58823ac | 812 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
813 | return 0; |
814 | } | |
815 | ||
816 | /* | |
817 | * YFS.RemoveFile2 operation type. | |
818 | */ | |
819 | static const struct afs_call_type yfs_RXYFSRemoveFile2 = { | |
820 | .name = "YFS.RemoveFile2", | |
821 | .op = yfs_FS_RemoveFile2, | |
822 | .deliver = yfs_deliver_fs_remove_file2, | |
823 | .destructor = afs_flat_call_destructor, | |
824 | }; | |
825 | ||
826 | /* | |
827 | * Remove a file and retrieve new file status. | |
828 | */ | |
829 | int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
830 | const char *name, struct afs_status_cb *dvnode_scb, |
831 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
832 | { |
833 | struct afs_vnode *dvnode = fc->vnode; | |
834 | struct afs_call *call; | |
835 | struct afs_net *net = afs_v2net(dvnode); | |
836 | size_t namesz; | |
837 | __be32 *bp; | |
838 | ||
839 | _enter(""); | |
840 | ||
841 | namesz = strlen(name); | |
842 | ||
843 | call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2, | |
844 | sizeof(__be32) + | |
845 | sizeof(struct yfs_xdr_RPCFlags) + | |
846 | sizeof(struct yfs_xdr_YFSFid) + | |
847 | xdr_strlen(namesz), | |
848 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
849 | sizeof(struct yfs_xdr_YFSFid) + | |
850 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
851 | sizeof(struct yfs_xdr_YFSVolSync)); | |
852 | if (!call) | |
853 | return -ENOMEM; | |
854 | ||
855 | call->key = fc->key; | |
a58823ac DH |
856 | call->out_dir_scb = dvnode_scb; |
857 | call->out_scb = vnode_scb; | |
30062bd1 DH |
858 | |
859 | /* marshall the parameters */ | |
860 | bp = call->request; | |
861 | bp = xdr_encode_u32(bp, YFSREMOVEFILE2); | |
862 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
863 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
864 | bp = xdr_encode_string(bp, name, namesz); | |
865 | yfs_check_req(call, bp); | |
866 | ||
867 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 868 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 869 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
870 | afs_make_call(&fc->ac, call, GFP_NOFS); |
871 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
872 | } |
873 | ||
874 | /* | |
875 | * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation. | |
876 | */ | |
877 | static int yfs_deliver_fs_remove(struct afs_call *call) | |
878 | { | |
30062bd1 DH |
879 | const __be32 *bp; |
880 | int ret; | |
881 | ||
882 | _enter("{%u}", call->unmarshall); | |
883 | ||
884 | ret = afs_transfer_reply(call); | |
885 | if (ret < 0) | |
886 | return ret; | |
887 | ||
30062bd1 | 888 | bp = call->buffer; |
a58823ac | 889 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
890 | if (ret < 0) |
891 | return ret; | |
892 | ||
a58823ac | 893 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
894 | return 0; |
895 | } | |
896 | ||
897 | /* | |
898 | * FS.RemoveDir and FS.RemoveFile operation types. | |
899 | */ | |
900 | static const struct afs_call_type yfs_RXYFSRemoveFile = { | |
901 | .name = "YFS.RemoveFile", | |
902 | .op = yfs_FS_RemoveFile, | |
903 | .deliver = yfs_deliver_fs_remove, | |
904 | .destructor = afs_flat_call_destructor, | |
905 | }; | |
906 | ||
907 | static const struct afs_call_type yfs_RXYFSRemoveDir = { | |
908 | .name = "YFS.RemoveDir", | |
909 | .op = yfs_FS_RemoveDir, | |
910 | .deliver = yfs_deliver_fs_remove, | |
911 | .destructor = afs_flat_call_destructor, | |
912 | }; | |
913 | ||
914 | /* | |
915 | * remove a file or directory | |
916 | */ | |
917 | int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
918 | const char *name, bool isdir, |
919 | struct afs_status_cb *dvnode_scb) | |
30062bd1 DH |
920 | { |
921 | struct afs_vnode *dvnode = fc->vnode; | |
922 | struct afs_call *call; | |
923 | struct afs_net *net = afs_v2net(dvnode); | |
924 | size_t namesz; | |
925 | __be32 *bp; | |
926 | ||
927 | _enter(""); | |
928 | ||
929 | namesz = strlen(name); | |
930 | call = afs_alloc_flat_call( | |
931 | net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile, | |
932 | sizeof(__be32) + | |
933 | sizeof(struct yfs_xdr_RPCFlags) + | |
934 | sizeof(struct yfs_xdr_YFSFid) + | |
935 | xdr_strlen(namesz), | |
936 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
937 | sizeof(struct yfs_xdr_YFSVolSync)); | |
938 | if (!call) | |
939 | return -ENOMEM; | |
940 | ||
941 | call->key = fc->key; | |
a58823ac | 942 | call->out_dir_scb = dvnode_scb; |
30062bd1 DH |
943 | |
944 | /* marshall the parameters */ | |
945 | bp = call->request; | |
946 | bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE); | |
947 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
948 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
949 | bp = xdr_encode_string(bp, name, namesz); | |
950 | yfs_check_req(call, bp); | |
951 | ||
952 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 953 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 954 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
955 | afs_make_call(&fc->ac, call, GFP_NOFS); |
956 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
957 | } |
958 | ||
959 | /* | |
960 | * Deliver reply data to a YFS.Link operation. | |
961 | */ | |
962 | static int yfs_deliver_fs_link(struct afs_call *call) | |
963 | { | |
30062bd1 DH |
964 | const __be32 *bp; |
965 | int ret; | |
966 | ||
967 | _enter("{%u}", call->unmarshall); | |
968 | ||
969 | ret = afs_transfer_reply(call); | |
970 | if (ret < 0) | |
971 | return ret; | |
972 | ||
30062bd1 | 973 | bp = call->buffer; |
a58823ac | 974 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
975 | if (ret < 0) |
976 | return ret; | |
a58823ac | 977 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
978 | if (ret < 0) |
979 | return ret; | |
a58823ac | 980 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
981 | _leave(" = 0 [done]"); |
982 | return 0; | |
983 | } | |
984 | ||
985 | /* | |
986 | * YFS.Link operation type. | |
987 | */ | |
988 | static const struct afs_call_type yfs_RXYFSLink = { | |
989 | .name = "YFS.Link", | |
990 | .op = yfs_FS_Link, | |
991 | .deliver = yfs_deliver_fs_link, | |
992 | .destructor = afs_flat_call_destructor, | |
993 | }; | |
994 | ||
995 | /* | |
996 | * Make a hard link. | |
997 | */ | |
998 | int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
999 | const char *name, |
1000 | struct afs_status_cb *dvnode_scb, | |
1001 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
1002 | { |
1003 | struct afs_vnode *dvnode = fc->vnode; | |
1004 | struct afs_call *call; | |
1005 | struct afs_net *net = afs_v2net(vnode); | |
1006 | size_t namesz; | |
1007 | __be32 *bp; | |
1008 | ||
1009 | _enter(""); | |
1010 | ||
1011 | namesz = strlen(name); | |
1012 | call = afs_alloc_flat_call(net, &yfs_RXYFSLink, | |
1013 | sizeof(__be32) + | |
1014 | sizeof(struct yfs_xdr_RPCFlags) + | |
1015 | sizeof(struct yfs_xdr_YFSFid) + | |
1016 | xdr_strlen(namesz) + | |
1017 | sizeof(struct yfs_xdr_YFSFid), | |
1018 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1019 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1020 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1021 | if (!call) | |
1022 | return -ENOMEM; | |
1023 | ||
1024 | call->key = fc->key; | |
a58823ac DH |
1025 | call->out_dir_scb = dvnode_scb; |
1026 | call->out_scb = vnode_scb; | |
30062bd1 DH |
1027 | |
1028 | /* marshall the parameters */ | |
1029 | bp = call->request; | |
1030 | bp = xdr_encode_u32(bp, YFSLINK); | |
1031 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1032 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1033 | bp = xdr_encode_string(bp, name, namesz); | |
1034 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1035 | yfs_check_req(call, bp); | |
1036 | ||
1037 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1038 | trace_afs_make_fs_call1(call, &vnode->fid, name); |
20b8391f | 1039 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1040 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1041 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1042 | } |
1043 | ||
1044 | /* | |
1045 | * Deliver reply data to a YFS.Symlink operation. | |
1046 | */ | |
1047 | static int yfs_deliver_fs_symlink(struct afs_call *call) | |
1048 | { | |
30062bd1 DH |
1049 | const __be32 *bp; |
1050 | int ret; | |
1051 | ||
1052 | _enter("{%u}", call->unmarshall); | |
1053 | ||
1054 | ret = afs_transfer_reply(call); | |
1055 | if (ret < 0) | |
1056 | return ret; | |
1057 | ||
1058 | /* unmarshall the reply once we've received all of it */ | |
1059 | bp = call->buffer; | |
ffba718e | 1060 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 1061 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
1062 | if (ret < 0) |
1063 | return ret; | |
a58823ac | 1064 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1065 | if (ret < 0) |
1066 | return ret; | |
a58823ac | 1067 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1068 | |
1069 | _leave(" = 0 [done]"); | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * YFS.Symlink operation type | |
1075 | */ | |
1076 | static const struct afs_call_type yfs_RXYFSSymlink = { | |
1077 | .name = "YFS.Symlink", | |
1078 | .op = yfs_FS_Symlink, | |
1079 | .deliver = yfs_deliver_fs_symlink, | |
1080 | .destructor = afs_flat_call_destructor, | |
1081 | }; | |
1082 | ||
1083 | /* | |
1084 | * Create a symbolic link. | |
1085 | */ | |
1086 | int yfs_fs_symlink(struct afs_fs_cursor *fc, | |
1087 | const char *name, | |
1088 | const char *contents, | |
a58823ac | 1089 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 1090 | struct afs_fid *newfid, |
a58823ac | 1091 | struct afs_status_cb *vnode_scb) |
30062bd1 DH |
1092 | { |
1093 | struct afs_vnode *dvnode = fc->vnode; | |
1094 | struct afs_call *call; | |
1095 | struct afs_net *net = afs_v2net(dvnode); | |
1096 | size_t namesz, contents_sz; | |
1097 | __be32 *bp; | |
1098 | ||
1099 | _enter(""); | |
1100 | ||
1101 | namesz = strlen(name); | |
1102 | contents_sz = strlen(contents); | |
1103 | call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink, | |
1104 | sizeof(__be32) + | |
1105 | sizeof(struct yfs_xdr_RPCFlags) + | |
1106 | sizeof(struct yfs_xdr_YFSFid) + | |
1107 | xdr_strlen(namesz) + | |
1108 | xdr_strlen(contents_sz) + | |
1109 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1110 | sizeof(struct yfs_xdr_YFSFid) + | |
1111 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1112 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1113 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1114 | if (!call) | |
1115 | return -ENOMEM; | |
1116 | ||
1117 | call->key = fc->key; | |
a58823ac | 1118 | call->out_dir_scb = dvnode_scb; |
ffba718e | 1119 | call->out_fid = newfid; |
a58823ac | 1120 | call->out_scb = vnode_scb; |
30062bd1 DH |
1121 | |
1122 | /* marshall the parameters */ | |
1123 | bp = call->request; | |
1124 | bp = xdr_encode_u32(bp, YFSSYMLINK); | |
1125 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1126 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1127 | bp = xdr_encode_string(bp, name, namesz); | |
1128 | bp = xdr_encode_string(bp, contents, contents_sz); | |
1129 | bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO); | |
1130 | yfs_check_req(call, bp); | |
1131 | ||
1132 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1133 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 1134 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1135 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1136 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1137 | } |
1138 | ||
1139 | /* | |
1140 | * Deliver reply data to a YFS.Rename operation. | |
1141 | */ | |
1142 | static int yfs_deliver_fs_rename(struct afs_call *call) | |
1143 | { | |
30062bd1 DH |
1144 | const __be32 *bp; |
1145 | int ret; | |
1146 | ||
1147 | _enter("{%u}", call->unmarshall); | |
1148 | ||
1149 | ret = afs_transfer_reply(call); | |
1150 | if (ret < 0) | |
1151 | return ret; | |
1152 | ||
30062bd1 | 1153 | bp = call->buffer; |
a58823ac | 1154 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1155 | if (ret < 0) |
1156 | return ret; | |
a58823ac DH |
1157 | if (call->out_dir_scb != call->out_scb) { |
1158 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); | |
30062bd1 DH |
1159 | if (ret < 0) |
1160 | return ret; | |
1161 | } | |
1162 | ||
a58823ac | 1163 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1164 | _leave(" = 0 [done]"); |
1165 | return 0; | |
1166 | } | |
1167 | ||
1168 | /* | |
1169 | * YFS.Rename operation type | |
1170 | */ | |
1171 | static const struct afs_call_type yfs_RXYFSRename = { | |
1172 | .name = "FS.Rename", | |
1173 | .op = yfs_FS_Rename, | |
1174 | .deliver = yfs_deliver_fs_rename, | |
1175 | .destructor = afs_flat_call_destructor, | |
1176 | }; | |
1177 | ||
1178 | /* | |
1179 | * Rename a file or directory. | |
1180 | */ | |
1181 | int yfs_fs_rename(struct afs_fs_cursor *fc, | |
1182 | const char *orig_name, | |
1183 | struct afs_vnode *new_dvnode, | |
1184 | const char *new_name, | |
a58823ac DH |
1185 | struct afs_status_cb *orig_dvnode_scb, |
1186 | struct afs_status_cb *new_dvnode_scb) | |
30062bd1 DH |
1187 | { |
1188 | struct afs_vnode *orig_dvnode = fc->vnode; | |
1189 | struct afs_call *call; | |
1190 | struct afs_net *net = afs_v2net(orig_dvnode); | |
1191 | size_t o_namesz, n_namesz; | |
1192 | __be32 *bp; | |
1193 | ||
1194 | _enter(""); | |
1195 | ||
1196 | o_namesz = strlen(orig_name); | |
1197 | n_namesz = strlen(new_name); | |
1198 | call = afs_alloc_flat_call(net, &yfs_RXYFSRename, | |
1199 | sizeof(__be32) + | |
1200 | sizeof(struct yfs_xdr_RPCFlags) + | |
1201 | sizeof(struct yfs_xdr_YFSFid) + | |
1202 | xdr_strlen(o_namesz) + | |
1203 | sizeof(struct yfs_xdr_YFSFid) + | |
1204 | xdr_strlen(n_namesz), | |
1205 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1206 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1207 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1208 | if (!call) | |
1209 | return -ENOMEM; | |
1210 | ||
1211 | call->key = fc->key; | |
a58823ac DH |
1212 | call->out_dir_scb = orig_dvnode_scb; |
1213 | call->out_scb = new_dvnode_scb; | |
30062bd1 DH |
1214 | |
1215 | /* marshall the parameters */ | |
1216 | bp = call->request; | |
1217 | bp = xdr_encode_u32(bp, YFSRENAME); | |
1218 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1219 | bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid); | |
1220 | bp = xdr_encode_string(bp, orig_name, o_namesz); | |
1221 | bp = xdr_encode_YFSFid(bp, &new_dvnode->fid); | |
1222 | bp = xdr_encode_string(bp, new_name, n_namesz); | |
1223 | yfs_check_req(call, bp); | |
1224 | ||
1225 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1226 | trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name); |
20b8391f | 1227 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1228 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1229 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1230 | } |
1231 | ||
30062bd1 DH |
1232 | /* |
1233 | * YFS.StoreData64 operation type. | |
1234 | */ | |
1235 | static const struct afs_call_type yfs_RXYFSStoreData64 = { | |
1236 | .name = "YFS.StoreData64", | |
1237 | .op = yfs_FS_StoreData64, | |
a58823ac | 1238 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1239 | .destructor = afs_flat_call_destructor, |
1240 | }; | |
1241 | ||
1242 | /* | |
1243 | * Store a set of pages to a large file. | |
1244 | */ | |
1245 | int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, | |
1246 | pgoff_t first, pgoff_t last, | |
a58823ac DH |
1247 | unsigned offset, unsigned to, |
1248 | struct afs_status_cb *scb) | |
30062bd1 DH |
1249 | { |
1250 | struct afs_vnode *vnode = fc->vnode; | |
1251 | struct afs_call *call; | |
1252 | struct afs_net *net = afs_v2net(vnode); | |
1253 | loff_t size, pos, i_size; | |
1254 | __be32 *bp; | |
1255 | ||
1256 | _enter(",%x,{%llx:%llu},,", | |
1257 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1258 | ||
1259 | size = (loff_t)to - (loff_t)offset; | |
1260 | if (first != last) | |
1261 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1262 | pos = (loff_t)first << PAGE_SHIFT; | |
1263 | pos += offset; | |
1264 | ||
1265 | i_size = i_size_read(&vnode->vfs_inode); | |
1266 | if (pos + size > i_size) | |
1267 | i_size = size + pos; | |
1268 | ||
1269 | _debug("size %llx, at %llx, i_size %llx", | |
1270 | (unsigned long long)size, (unsigned long long)pos, | |
1271 | (unsigned long long)i_size); | |
1272 | ||
1273 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64, | |
1274 | sizeof(__be32) + | |
1275 | sizeof(__be32) + | |
1276 | sizeof(struct yfs_xdr_YFSFid) + | |
1277 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
1278 | sizeof(struct yfs_xdr_u64) * 3, | |
1279 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1280 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1281 | if (!call) | |
1282 | return -ENOMEM; | |
1283 | ||
1284 | call->key = fc->key; | |
1285 | call->mapping = mapping; | |
30062bd1 DH |
1286 | call->first = first; |
1287 | call->last = last; | |
1288 | call->first_offset = offset; | |
1289 | call->last_to = to; | |
1290 | call->send_pages = true; | |
a58823ac | 1291 | call->out_scb = scb; |
30062bd1 DH |
1292 | |
1293 | /* marshall the parameters */ | |
1294 | bp = call->request; | |
1295 | bp = xdr_encode_u32(bp, YFSSTOREDATA64); | |
1296 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1297 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1298 | bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime); | |
1299 | bp = xdr_encode_u64(bp, pos); | |
1300 | bp = xdr_encode_u64(bp, size); | |
1301 | bp = xdr_encode_u64(bp, i_size); | |
1302 | yfs_check_req(call, bp); | |
1303 | ||
1304 | afs_use_fs_server(call, fc->cbi); | |
1305 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1306 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1307 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1308 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1309 | } |
1310 | ||
30062bd1 DH |
1311 | /* |
1312 | * YFS.StoreStatus operation type | |
1313 | */ | |
1314 | static const struct afs_call_type yfs_RXYFSStoreStatus = { | |
1315 | .name = "YFS.StoreStatus", | |
1316 | .op = yfs_FS_StoreStatus, | |
a58823ac | 1317 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1318 | .destructor = afs_flat_call_destructor, |
1319 | }; | |
1320 | ||
1321 | static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = { | |
1322 | .name = "YFS.StoreData64", | |
1323 | .op = yfs_FS_StoreData64, | |
a58823ac | 1324 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1325 | .destructor = afs_flat_call_destructor, |
1326 | }; | |
1327 | ||
1328 | /* | |
1329 | * Set the attributes on a file, using YFS.StoreData64 rather than | |
1330 | * YFS.StoreStatus so as to alter the file size also. | |
1331 | */ | |
a58823ac DH |
1332 | static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr, |
1333 | struct afs_status_cb *scb) | |
30062bd1 DH |
1334 | { |
1335 | struct afs_vnode *vnode = fc->vnode; | |
1336 | struct afs_call *call; | |
1337 | struct afs_net *net = afs_v2net(vnode); | |
1338 | __be32 *bp; | |
1339 | ||
1340 | _enter(",%x,{%llx:%llu},,", | |
1341 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1342 | ||
1343 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status, | |
1344 | sizeof(__be32) * 2 + | |
1345 | sizeof(struct yfs_xdr_YFSFid) + | |
1346 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
1347 | sizeof(struct yfs_xdr_u64) * 3, | |
1348 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1349 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1350 | if (!call) | |
1351 | return -ENOMEM; | |
1352 | ||
1353 | call->key = fc->key; | |
a58823ac | 1354 | call->out_scb = scb; |
30062bd1 DH |
1355 | |
1356 | /* marshall the parameters */ | |
1357 | bp = call->request; | |
1358 | bp = xdr_encode_u32(bp, YFSSTOREDATA64); | |
1359 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1360 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1361 | bp = xdr_encode_YFS_StoreStatus(bp, attr); | |
8c7ae38d | 1362 | bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */ |
30062bd1 DH |
1363 | bp = xdr_encode_u64(bp, 0); /* size of write */ |
1364 | bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */ | |
1365 | yfs_check_req(call, bp); | |
1366 | ||
1367 | afs_use_fs_server(call, fc->cbi); | |
1368 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1369 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1370 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1371 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1372 | } |
1373 | ||
1374 | /* | |
1375 | * Set the attributes on a file, using YFS.StoreData64 if there's a change in | |
1376 | * file size, and YFS.StoreStatus otherwise. | |
1377 | */ | |
a58823ac DH |
1378 | int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr, |
1379 | struct afs_status_cb *scb) | |
30062bd1 DH |
1380 | { |
1381 | struct afs_vnode *vnode = fc->vnode; | |
1382 | struct afs_call *call; | |
1383 | struct afs_net *net = afs_v2net(vnode); | |
1384 | __be32 *bp; | |
1385 | ||
1386 | if (attr->ia_valid & ATTR_SIZE) | |
a58823ac | 1387 | return yfs_fs_setattr_size(fc, attr, scb); |
30062bd1 DH |
1388 | |
1389 | _enter(",%x,{%llx:%llu},,", | |
1390 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1391 | ||
1392 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus, | |
1393 | sizeof(__be32) * 2 + | |
1394 | sizeof(struct yfs_xdr_YFSFid) + | |
1395 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1396 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1397 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1398 | if (!call) | |
1399 | return -ENOMEM; | |
1400 | ||
1401 | call->key = fc->key; | |
a58823ac | 1402 | call->out_scb = scb; |
30062bd1 DH |
1403 | |
1404 | /* marshall the parameters */ | |
1405 | bp = call->request; | |
1406 | bp = xdr_encode_u32(bp, YFSSTORESTATUS); | |
1407 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1408 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1409 | bp = xdr_encode_YFS_StoreStatus(bp, attr); | |
1410 | yfs_check_req(call, bp); | |
1411 | ||
1412 | afs_use_fs_server(call, fc->cbi); | |
1413 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1414 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1415 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1416 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1417 | } |
1418 | ||
1419 | /* | |
1420 | * Deliver reply data to a YFS.GetVolumeStatus operation. | |
1421 | */ | |
1422 | static int yfs_deliver_fs_get_volume_status(struct afs_call *call) | |
1423 | { | |
1424 | const __be32 *bp; | |
1425 | char *p; | |
1426 | u32 size; | |
1427 | int ret; | |
1428 | ||
1429 | _enter("{%u}", call->unmarshall); | |
1430 | ||
1431 | switch (call->unmarshall) { | |
1432 | case 0: | |
1433 | call->unmarshall++; | |
1434 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus)); | |
35a3a90c | 1435 | /* Fall through */ |
30062bd1 | 1436 | |
35a3a90c | 1437 | /* 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); | |
35a3a90c | 1448 | /* Fall through */ |
30062bd1 | 1449 | |
35a3a90c | 1450 | /* extract the volume name length */ |
30062bd1 DH |
1451 | case 2: |
1452 | ret = afs_extract_data(call, true); | |
1453 | if (ret < 0) | |
1454 | return ret; | |
1455 | ||
1456 | call->count = ntohl(call->tmp); | |
1457 | _debug("volname length: %u", call->count); | |
1458 | if (call->count >= AFSNAMEMAX) | |
1459 | return afs_protocol_error(call, -EBADMSG, | |
1460 | afs_eproto_volname_len); | |
1461 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1462 | afs_extract_to_buf(call, size); |
30062bd1 | 1463 | call->unmarshall++; |
35a3a90c | 1464 | /* Fall through */ |
30062bd1 | 1465 | |
35a3a90c | 1466 | /* extract the volume name */ |
30062bd1 DH |
1467 | case 3: |
1468 | _debug("extract volname"); | |
1469 | ret = afs_extract_data(call, true); | |
1470 | if (ret < 0) | |
1471 | return ret; | |
1472 | ||
ffba718e | 1473 | p = call->buffer; |
30062bd1 DH |
1474 | p[call->count] = 0; |
1475 | _debug("volname '%s'", p); | |
1476 | afs_extract_to_tmp(call); | |
1477 | call->unmarshall++; | |
35a3a90c | 1478 | /* Fall through */ |
30062bd1 | 1479 | |
35a3a90c | 1480 | /* extract the offline message length */ |
30062bd1 DH |
1481 | case 4: |
1482 | ret = afs_extract_data(call, true); | |
1483 | if (ret < 0) | |
1484 | return ret; | |
1485 | ||
1486 | call->count = ntohl(call->tmp); | |
1487 | _debug("offline msg length: %u", call->count); | |
1488 | if (call->count >= AFSNAMEMAX) | |
1489 | return afs_protocol_error(call, -EBADMSG, | |
1490 | afs_eproto_offline_msg_len); | |
1491 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1492 | afs_extract_to_buf(call, size); |
30062bd1 | 1493 | call->unmarshall++; |
35a3a90c | 1494 | /* Fall through */ |
30062bd1 | 1495 | |
35a3a90c | 1496 | /* extract the offline message */ |
30062bd1 DH |
1497 | case 5: |
1498 | _debug("extract offline"); | |
1499 | ret = afs_extract_data(call, true); | |
1500 | if (ret < 0) | |
1501 | return ret; | |
1502 | ||
ffba718e | 1503 | p = call->buffer; |
30062bd1 DH |
1504 | p[call->count] = 0; |
1505 | _debug("offline '%s'", p); | |
1506 | ||
1507 | afs_extract_to_tmp(call); | |
1508 | call->unmarshall++; | |
35a3a90c | 1509 | /* Fall through */ |
30062bd1 | 1510 | |
35a3a90c | 1511 | /* extract the message of the day length */ |
30062bd1 DH |
1512 | case 6: |
1513 | ret = afs_extract_data(call, true); | |
1514 | if (ret < 0) | |
1515 | return ret; | |
1516 | ||
1517 | call->count = ntohl(call->tmp); | |
1518 | _debug("motd length: %u", call->count); | |
1519 | if (call->count >= AFSNAMEMAX) | |
1520 | return afs_protocol_error(call, -EBADMSG, | |
1521 | afs_eproto_motd_len); | |
1522 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1523 | afs_extract_to_buf(call, size); |
30062bd1 | 1524 | call->unmarshall++; |
35a3a90c | 1525 | /* Fall through */ |
30062bd1 | 1526 | |
35a3a90c | 1527 | /* extract the message of the day */ |
30062bd1 DH |
1528 | case 7: |
1529 | _debug("extract motd"); | |
1530 | ret = afs_extract_data(call, false); | |
1531 | if (ret < 0) | |
1532 | return ret; | |
1533 | ||
ffba718e | 1534 | p = call->buffer; |
30062bd1 DH |
1535 | p[call->count] = 0; |
1536 | _debug("motd '%s'", p); | |
1537 | ||
1538 | call->unmarshall++; | |
e690c9e3 | 1539 | /* Fall through */ |
35a3a90c | 1540 | |
30062bd1 DH |
1541 | case 8: |
1542 | break; | |
1543 | } | |
1544 | ||
1545 | _leave(" = 0 [done]"); | |
1546 | return 0; | |
1547 | } | |
1548 | ||
30062bd1 DH |
1549 | /* |
1550 | * YFS.GetVolumeStatus operation type | |
1551 | */ | |
1552 | static const struct afs_call_type yfs_RXYFSGetVolumeStatus = { | |
1553 | .name = "YFS.GetVolumeStatus", | |
1554 | .op = yfs_FS_GetVolumeStatus, | |
1555 | .deliver = yfs_deliver_fs_get_volume_status, | |
ffba718e | 1556 | .destructor = afs_flat_call_destructor, |
30062bd1 DH |
1557 | }; |
1558 | ||
1559 | /* | |
1560 | * fetch the status of a volume | |
1561 | */ | |
1562 | int yfs_fs_get_volume_status(struct afs_fs_cursor *fc, | |
1563 | struct afs_volume_status *vs) | |
1564 | { | |
1565 | struct afs_vnode *vnode = fc->vnode; | |
1566 | struct afs_call *call; | |
1567 | struct afs_net *net = afs_v2net(vnode); | |
1568 | __be32 *bp; | |
30062bd1 DH |
1569 | |
1570 | _enter(""); | |
1571 | ||
30062bd1 DH |
1572 | call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus, |
1573 | sizeof(__be32) * 2 + | |
1574 | sizeof(struct yfs_xdr_u64), | |
ffba718e DH |
1575 | max_t(size_t, |
1576 | sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + | |
1577 | sizeof(__be32), | |
1578 | AFSOPAQUEMAX + 1)); | |
1579 | if (!call) | |
30062bd1 | 1580 | return -ENOMEM; |
30062bd1 DH |
1581 | |
1582 | call->key = fc->key; | |
ffba718e | 1583 | call->out_volstatus = vs; |
30062bd1 DH |
1584 | |
1585 | /* marshall the parameters */ | |
1586 | bp = call->request; | |
1587 | bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS); | |
1588 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1589 | bp = xdr_encode_u64(bp, vnode->fid.vid); | |
1590 | yfs_check_req(call, bp); | |
1591 | ||
1592 | afs_use_fs_server(call, fc->cbi); | |
1593 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1594 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1595 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1596 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1597 | } |
1598 | ||
30062bd1 DH |
1599 | /* |
1600 | * YFS.SetLock operation type | |
1601 | */ | |
1602 | static const struct afs_call_type yfs_RXYFSSetLock = { | |
1603 | .name = "YFS.SetLock", | |
1604 | .op = yfs_FS_SetLock, | |
f5e45463 | 1605 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1606 | .done = afs_lock_op_done, |
30062bd1 DH |
1607 | .destructor = afs_flat_call_destructor, |
1608 | }; | |
1609 | ||
1610 | /* | |
1611 | * YFS.ExtendLock operation type | |
1612 | */ | |
1613 | static const struct afs_call_type yfs_RXYFSExtendLock = { | |
1614 | .name = "YFS.ExtendLock", | |
1615 | .op = yfs_FS_ExtendLock, | |
f5e45463 | 1616 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1617 | .done = afs_lock_op_done, |
30062bd1 DH |
1618 | .destructor = afs_flat_call_destructor, |
1619 | }; | |
1620 | ||
1621 | /* | |
1622 | * YFS.ReleaseLock operation type | |
1623 | */ | |
1624 | static const struct afs_call_type yfs_RXYFSReleaseLock = { | |
1625 | .name = "YFS.ReleaseLock", | |
1626 | .op = yfs_FS_ReleaseLock, | |
f5e45463 | 1627 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1628 | .destructor = afs_flat_call_destructor, |
1629 | }; | |
1630 | ||
1631 | /* | |
1632 | * Set a lock on a file | |
1633 | */ | |
a58823ac DH |
1634 | int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type, |
1635 | struct afs_status_cb *scb) | |
30062bd1 DH |
1636 | { |
1637 | struct afs_vnode *vnode = fc->vnode; | |
1638 | struct afs_call *call; | |
1639 | struct afs_net *net = afs_v2net(vnode); | |
1640 | __be32 *bp; | |
1641 | ||
1642 | _enter(""); | |
1643 | ||
1644 | call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock, | |
1645 | sizeof(__be32) * 2 + | |
1646 | sizeof(struct yfs_xdr_YFSFid) + | |
1647 | sizeof(__be32), | |
1648 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1649 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1650 | if (!call) | |
1651 | return -ENOMEM; | |
1652 | ||
1653 | call->key = fc->key; | |
a58823ac DH |
1654 | call->lvnode = vnode; |
1655 | call->out_scb = scb; | |
30062bd1 DH |
1656 | |
1657 | /* marshall the parameters */ | |
1658 | bp = call->request; | |
1659 | bp = xdr_encode_u32(bp, YFSSETLOCK); | |
1660 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1661 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1662 | bp = xdr_encode_u32(bp, type); | |
1663 | yfs_check_req(call, bp); | |
1664 | ||
1665 | afs_use_fs_server(call, fc->cbi); | |
6c6c1d63 | 1666 | trace_afs_make_fs_calli(call, &vnode->fid, type); |
20b8391f | 1667 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1668 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1669 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1670 | } |
1671 | ||
1672 | /* | |
1673 | * extend a lock on a file | |
1674 | */ | |
a58823ac | 1675 | int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1676 | { |
1677 | struct afs_vnode *vnode = fc->vnode; | |
1678 | struct afs_call *call; | |
1679 | struct afs_net *net = afs_v2net(vnode); | |
1680 | __be32 *bp; | |
1681 | ||
1682 | _enter(""); | |
1683 | ||
1684 | call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock, | |
1685 | sizeof(__be32) * 2 + | |
1686 | sizeof(struct yfs_xdr_YFSFid), | |
1687 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1688 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1689 | if (!call) | |
1690 | return -ENOMEM; | |
1691 | ||
1692 | call->key = fc->key; | |
a58823ac DH |
1693 | call->lvnode = vnode; |
1694 | call->out_scb = scb; | |
30062bd1 DH |
1695 | |
1696 | /* marshall the parameters */ | |
1697 | bp = call->request; | |
1698 | bp = xdr_encode_u32(bp, YFSEXTENDLOCK); | |
1699 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1700 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1701 | yfs_check_req(call, bp); | |
1702 | ||
1703 | afs_use_fs_server(call, fc->cbi); | |
1704 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1705 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1706 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1707 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1708 | } |
1709 | ||
1710 | /* | |
1711 | * release a lock on a file | |
1712 | */ | |
a58823ac | 1713 | int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1714 | { |
1715 | struct afs_vnode *vnode = fc->vnode; | |
1716 | struct afs_call *call; | |
1717 | struct afs_net *net = afs_v2net(vnode); | |
1718 | __be32 *bp; | |
1719 | ||
1720 | _enter(""); | |
1721 | ||
1722 | call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock, | |
1723 | sizeof(__be32) * 2 + | |
1724 | sizeof(struct yfs_xdr_YFSFid), | |
1725 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1726 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1727 | if (!call) | |
1728 | return -ENOMEM; | |
1729 | ||
1730 | call->key = fc->key; | |
a58823ac DH |
1731 | call->lvnode = vnode; |
1732 | call->out_scb = scb; | |
30062bd1 DH |
1733 | |
1734 | /* marshall the parameters */ | |
1735 | bp = call->request; | |
1736 | bp = xdr_encode_u32(bp, YFSRELEASELOCK); | |
1737 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1738 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1739 | yfs_check_req(call, bp); | |
1740 | ||
1741 | afs_use_fs_server(call, fc->cbi); | |
1742 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1743 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1744 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1745 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1746 | } |
1747 | ||
30062bd1 DH |
1748 | /* |
1749 | * YFS.FetchStatus operation type | |
1750 | */ | |
1751 | static const struct afs_call_type yfs_RXYFSFetchStatus = { | |
1752 | .name = "YFS.FetchStatus", | |
1753 | .op = yfs_FS_FetchStatus, | |
a58823ac | 1754 | .deliver = yfs_deliver_fs_status_cb_and_volsync, |
30062bd1 DH |
1755 | .destructor = afs_flat_call_destructor, |
1756 | }; | |
1757 | ||
1758 | /* | |
1759 | * Fetch the status information for a fid without needing a vnode handle. | |
1760 | */ | |
1761 | int yfs_fs_fetch_status(struct afs_fs_cursor *fc, | |
1762 | struct afs_net *net, | |
1763 | struct afs_fid *fid, | |
a58823ac | 1764 | struct afs_status_cb *scb, |
30062bd1 DH |
1765 | struct afs_volsync *volsync) |
1766 | { | |
1767 | struct afs_call *call; | |
1768 | __be32 *bp; | |
1769 | ||
1770 | _enter(",%x,{%llx:%llu},,", | |
1771 | key_serial(fc->key), fid->vid, fid->vnode); | |
1772 | ||
1773 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus, | |
1774 | sizeof(__be32) * 2 + | |
1775 | sizeof(struct yfs_xdr_YFSFid), | |
1776 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1777 | sizeof(struct yfs_xdr_YFSCallBack) + | |
1778 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1779 | if (!call) { | |
1780 | fc->ac.error = -ENOMEM; | |
1781 | return -ENOMEM; | |
1782 | } | |
1783 | ||
1784 | call->key = fc->key; | |
a58823ac | 1785 | call->out_scb = scb; |
ffba718e | 1786 | call->out_volsync = volsync; |
30062bd1 DH |
1787 | |
1788 | /* marshall the parameters */ | |
1789 | bp = call->request; | |
1790 | bp = xdr_encode_u32(bp, YFSFETCHSTATUS); | |
1791 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1792 | bp = xdr_encode_YFSFid(bp, fid); | |
1793 | yfs_check_req(call, bp); | |
1794 | ||
30062bd1 DH |
1795 | afs_use_fs_server(call, fc->cbi); |
1796 | trace_afs_make_fs_call(call, fid); | |
20b8391f | 1797 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1798 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1799 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1800 | } |
1801 | ||
1802 | /* | |
1803 | * Deliver reply data to an YFS.InlineBulkStatus call | |
1804 | */ | |
1805 | static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) | |
1806 | { | |
87182759 | 1807 | struct afs_status_cb *scb; |
30062bd1 DH |
1808 | const __be32 *bp; |
1809 | u32 tmp; | |
1810 | int ret; | |
1811 | ||
1812 | _enter("{%u}", call->unmarshall); | |
1813 | ||
1814 | switch (call->unmarshall) { | |
1815 | case 0: | |
1816 | afs_extract_to_tmp(call); | |
1817 | call->unmarshall++; | |
35a3a90c | 1818 | /* Fall through */ |
30062bd1 DH |
1819 | |
1820 | /* Extract the file status count and array in two steps */ | |
1821 | case 1: | |
1822 | _debug("extract status count"); | |
1823 | ret = afs_extract_data(call, true); | |
1824 | if (ret < 0) | |
1825 | return ret; | |
1826 | ||
1827 | tmp = ntohl(call->tmp); | |
1828 | _debug("status count: %u/%u", tmp, call->count2); | |
1829 | if (tmp != call->count2) | |
1830 | return afs_protocol_error(call, -EBADMSG, | |
1831 | afs_eproto_ibulkst_count); | |
1832 | ||
1833 | call->count = 0; | |
1834 | call->unmarshall++; | |
1835 | more_counts: | |
1836 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus)); | |
e690c9e3 | 1837 | /* Fall through */ |
35a3a90c | 1838 | |
30062bd1 DH |
1839 | case 2: |
1840 | _debug("extract status array %u", call->count); | |
1841 | ret = afs_extract_data(call, true); | |
1842 | if (ret < 0) | |
1843 | return ret; | |
1844 | ||
1845 | bp = call->buffer; | |
87182759 | 1846 | scb = &call->out_scb[call->count]; |
a58823ac | 1847 | ret = xdr_decode_YFSFetchStatus(&bp, call, scb); |
30062bd1 DH |
1848 | if (ret < 0) |
1849 | return ret; | |
1850 | ||
1851 | call->count++; | |
1852 | if (call->count < call->count2) | |
1853 | goto more_counts; | |
1854 | ||
1855 | call->count = 0; | |
1856 | call->unmarshall++; | |
1857 | afs_extract_to_tmp(call); | |
35a3a90c | 1858 | /* Fall through */ |
30062bd1 DH |
1859 | |
1860 | /* Extract the callback count and array in two steps */ | |
1861 | case 3: | |
1862 | _debug("extract CB count"); | |
1863 | ret = afs_extract_data(call, true); | |
1864 | if (ret < 0) | |
1865 | return ret; | |
1866 | ||
1867 | tmp = ntohl(call->tmp); | |
1868 | _debug("CB count: %u", tmp); | |
1869 | if (tmp != call->count2) | |
1870 | return afs_protocol_error(call, -EBADMSG, | |
1871 | afs_eproto_ibulkst_cb_count); | |
1872 | call->count = 0; | |
1873 | call->unmarshall++; | |
1874 | more_cbs: | |
1875 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack)); | |
e690c9e3 | 1876 | /* Fall through */ |
35a3a90c | 1877 | |
30062bd1 DH |
1878 | case 4: |
1879 | _debug("extract CB array"); | |
1880 | ret = afs_extract_data(call, true); | |
1881 | if (ret < 0) | |
1882 | return ret; | |
1883 | ||
1884 | _debug("unmarshall CB array"); | |
1885 | bp = call->buffer; | |
87182759 | 1886 | scb = &call->out_scb[call->count]; |
a58823ac | 1887 | xdr_decode_YFSCallBack(&bp, call, scb); |
30062bd1 DH |
1888 | call->count++; |
1889 | if (call->count < call->count2) | |
1890 | goto more_cbs; | |
1891 | ||
1892 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync)); | |
1893 | call->unmarshall++; | |
e690c9e3 | 1894 | /* Fall through */ |
35a3a90c | 1895 | |
30062bd1 DH |
1896 | case 5: |
1897 | ret = afs_extract_data(call, false); | |
1898 | if (ret < 0) | |
1899 | return ret; | |
1900 | ||
1901 | bp = call->buffer; | |
ffba718e | 1902 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1903 | |
1904 | call->unmarshall++; | |
e690c9e3 | 1905 | /* Fall through */ |
35a3a90c | 1906 | |
30062bd1 DH |
1907 | case 6: |
1908 | break; | |
1909 | } | |
1910 | ||
1911 | _leave(" = 0 [done]"); | |
1912 | return 0; | |
1913 | } | |
1914 | ||
1915 | /* | |
1916 | * FS.InlineBulkStatus operation type | |
1917 | */ | |
1918 | static const struct afs_call_type yfs_RXYFSInlineBulkStatus = { | |
1919 | .name = "YFS.InlineBulkStatus", | |
1920 | .op = yfs_FS_InlineBulkStatus, | |
1921 | .deliver = yfs_deliver_fs_inline_bulk_status, | |
1922 | .destructor = afs_flat_call_destructor, | |
1923 | }; | |
1924 | ||
1925 | /* | |
1926 | * Fetch the status information for up to 1024 files | |
1927 | */ | |
1928 | int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, | |
1929 | struct afs_net *net, | |
1930 | struct afs_fid *fids, | |
87182759 | 1931 | struct afs_status_cb *statuses, |
30062bd1 DH |
1932 | unsigned int nr_fids, |
1933 | struct afs_volsync *volsync) | |
1934 | { | |
1935 | struct afs_call *call; | |
1936 | __be32 *bp; | |
1937 | int i; | |
1938 | ||
1939 | _enter(",%x,{%llx:%llu},%u", | |
1940 | key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids); | |
1941 | ||
1942 | call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus, | |
1943 | sizeof(__be32) + | |
1944 | sizeof(__be32) + | |
1945 | sizeof(__be32) + | |
1946 | sizeof(struct yfs_xdr_YFSFid) * nr_fids, | |
1947 | sizeof(struct yfs_xdr_YFSFetchStatus)); | |
1948 | if (!call) { | |
1949 | fc->ac.error = -ENOMEM; | |
1950 | return -ENOMEM; | |
1951 | } | |
1952 | ||
1953 | call->key = fc->key; | |
87182759 | 1954 | call->out_scb = statuses; |
ffba718e | 1955 | call->out_volsync = volsync; |
30062bd1 DH |
1956 | call->count2 = nr_fids; |
1957 | ||
1958 | /* marshall the parameters */ | |
1959 | bp = call->request; | |
1960 | bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS); | |
1961 | bp = xdr_encode_u32(bp, 0); /* RPCFlags */ | |
1962 | bp = xdr_encode_u32(bp, nr_fids); | |
1963 | for (i = 0; i < nr_fids; i++) | |
1964 | bp = xdr_encode_YFSFid(bp, &fids[i]); | |
1965 | yfs_check_req(call, bp); | |
1966 | ||
30062bd1 DH |
1967 | afs_use_fs_server(call, fc->cbi); |
1968 | trace_afs_make_fs_call(call, &fids[0]); | |
20b8391f | 1969 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1970 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1971 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 1972 | } |
ae46578b DH |
1973 | |
1974 | /* | |
1975 | * Deliver reply data to an YFS.FetchOpaqueACL. | |
1976 | */ | |
1977 | static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) | |
1978 | { | |
ffba718e | 1979 | struct yfs_acl *yacl = call->out_yacl; |
ae46578b DH |
1980 | struct afs_acl *acl; |
1981 | const __be32 *bp; | |
1982 | unsigned int size; | |
1983 | int ret; | |
1984 | ||
1985 | _enter("{%u}", call->unmarshall); | |
1986 | ||
1987 | switch (call->unmarshall) { | |
1988 | case 0: | |
1989 | afs_extract_to_tmp(call); | |
1990 | call->unmarshall++; | |
35a3a90c | 1991 | /* Fall through */ |
ae46578b DH |
1992 | |
1993 | /* Extract the file ACL length */ | |
1994 | case 1: | |
1995 | ret = afs_extract_data(call, true); | |
1996 | if (ret < 0) | |
1997 | return ret; | |
1998 | ||
1999 | size = call->count2 = ntohl(call->tmp); | |
2000 | size = round_up(size, 4); | |
2001 | ||
2002 | if (yacl->flags & YFS_ACL_WANT_ACL) { | |
2003 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2004 | if (!acl) | |
2005 | return -ENOMEM; | |
2006 | yacl->acl = acl; | |
2007 | acl->size = call->count2; | |
2008 | afs_extract_begin(call, acl->data, size); | |
2009 | } else { | |
2010 | iov_iter_discard(&call->iter, READ, size); | |
2011 | } | |
2012 | call->unmarshall++; | |
35a3a90c | 2013 | /* Fall through */ |
ae46578b DH |
2014 | |
2015 | /* Extract the file ACL */ | |
2016 | case 2: | |
2017 | ret = afs_extract_data(call, true); | |
2018 | if (ret < 0) | |
2019 | return ret; | |
2020 | ||
2021 | afs_extract_to_tmp(call); | |
2022 | call->unmarshall++; | |
35a3a90c | 2023 | /* Fall through */ |
ae46578b DH |
2024 | |
2025 | /* Extract the volume ACL length */ | |
2026 | case 3: | |
2027 | ret = afs_extract_data(call, true); | |
2028 | if (ret < 0) | |
2029 | return ret; | |
2030 | ||
2031 | size = call->count2 = ntohl(call->tmp); | |
2032 | size = round_up(size, 4); | |
2033 | ||
2034 | if (yacl->flags & YFS_ACL_WANT_VOL_ACL) { | |
2035 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2036 | if (!acl) | |
2037 | return -ENOMEM; | |
2038 | yacl->vol_acl = acl; | |
2039 | acl->size = call->count2; | |
2040 | afs_extract_begin(call, acl->data, size); | |
2041 | } else { | |
2042 | iov_iter_discard(&call->iter, READ, size); | |
2043 | } | |
2044 | call->unmarshall++; | |
35a3a90c | 2045 | /* Fall through */ |
ae46578b DH |
2046 | |
2047 | /* Extract the volume ACL */ | |
2048 | case 4: | |
2049 | ret = afs_extract_data(call, true); | |
2050 | if (ret < 0) | |
2051 | return ret; | |
2052 | ||
2053 | afs_extract_to_buf(call, | |
2054 | sizeof(__be32) * 2 + | |
2055 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2056 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2057 | call->unmarshall++; | |
35a3a90c | 2058 | /* Fall through */ |
ae46578b DH |
2059 | |
2060 | /* extract the metadata */ | |
2061 | case 5: | |
2062 | ret = afs_extract_data(call, false); | |
2063 | if (ret < 0) | |
2064 | return ret; | |
2065 | ||
2066 | bp = call->buffer; | |
2067 | yacl->inherit_flag = ntohl(*bp++); | |
2068 | yacl->num_cleaned = ntohl(*bp++); | |
a58823ac | 2069 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
ae46578b DH |
2070 | if (ret < 0) |
2071 | return ret; | |
a58823ac | 2072 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
ae46578b DH |
2073 | |
2074 | call->unmarshall++; | |
35a3a90c | 2075 | /* Fall through */ |
ae46578b DH |
2076 | |
2077 | case 6: | |
2078 | break; | |
2079 | } | |
2080 | ||
2081 | _leave(" = 0 [done]"); | |
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | void yfs_free_opaque_acl(struct yfs_acl *yacl) | |
2086 | { | |
2087 | if (yacl) { | |
2088 | kfree(yacl->acl); | |
2089 | kfree(yacl->vol_acl); | |
2090 | kfree(yacl); | |
2091 | } | |
2092 | } | |
2093 | ||
ae46578b DH |
2094 | /* |
2095 | * YFS.FetchOpaqueACL operation type | |
2096 | */ | |
2097 | static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { | |
2098 | .name = "YFS.FetchOpaqueACL", | |
2099 | .op = yfs_FS_FetchOpaqueACL, | |
2100 | .deliver = yfs_deliver_fs_fetch_opaque_acl, | |
773e0c40 | 2101 | .destructor = afs_flat_call_destructor, |
ae46578b DH |
2102 | }; |
2103 | ||
2104 | /* | |
2105 | * Fetch the YFS advanced ACLs for a file. | |
2106 | */ | |
2107 | struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, | |
a58823ac DH |
2108 | struct yfs_acl *yacl, |
2109 | struct afs_status_cb *scb) | |
ae46578b DH |
2110 | { |
2111 | struct afs_vnode *vnode = fc->vnode; | |
2112 | struct afs_call *call; | |
ae46578b DH |
2113 | struct afs_net *net = afs_v2net(vnode); |
2114 | __be32 *bp; | |
2115 | ||
2116 | _enter(",%x,{%llx:%llu},,", | |
2117 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2118 | ||
2119 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL, | |
2120 | sizeof(__be32) * 2 + | |
2121 | sizeof(struct yfs_xdr_YFSFid), | |
2122 | sizeof(__be32) * 2 + | |
2123 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2124 | sizeof(struct yfs_xdr_YFSVolSync)); | |
773e0c40 DH |
2125 | if (!call) { |
2126 | fc->ac.error = -ENOMEM; | |
2127 | return ERR_PTR(-ENOMEM); | |
2128 | } | |
ae46578b | 2129 | |
ae46578b | 2130 | call->key = fc->key; |
ffba718e | 2131 | call->out_yacl = yacl; |
a58823ac DH |
2132 | call->out_scb = scb; |
2133 | call->out_volsync = NULL; | |
ae46578b DH |
2134 | |
2135 | /* marshall the parameters */ | |
2136 | bp = call->request; | |
2137 | bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL); | |
2138 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2139 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2140 | yfs_check_req(call, bp); | |
2141 | ||
ae46578b DH |
2142 | afs_use_fs_server(call, fc->cbi); |
2143 | trace_afs_make_fs_call(call, &vnode->fid); | |
2144 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2145 | return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac); | |
ae46578b | 2146 | } |
f5e45463 DH |
2147 | |
2148 | /* | |
2149 | * YFS.StoreOpaqueACL2 operation type | |
2150 | */ | |
2151 | static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { | |
2152 | .name = "YFS.StoreOpaqueACL2", | |
2153 | .op = yfs_FS_StoreOpaqueACL2, | |
2154 | .deliver = yfs_deliver_status_and_volsync, | |
2155 | .destructor = afs_flat_call_destructor, | |
2156 | }; | |
2157 | ||
2158 | /* | |
2159 | * Fetch the YFS ACL for a file. | |
2160 | */ | |
a58823ac DH |
2161 | int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl, |
2162 | struct afs_status_cb *scb) | |
f5e45463 DH |
2163 | { |
2164 | struct afs_vnode *vnode = fc->vnode; | |
2165 | struct afs_call *call; | |
2166 | struct afs_net *net = afs_v2net(vnode); | |
2167 | size_t size; | |
2168 | __be32 *bp; | |
2169 | ||
2170 | _enter(",%x,{%llx:%llu},,", | |
2171 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2172 | ||
2173 | size = round_up(acl->size, 4); | |
7533be85 | 2174 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2, |
f5e45463 DH |
2175 | sizeof(__be32) * 2 + |
2176 | sizeof(struct yfs_xdr_YFSFid) + | |
2177 | sizeof(__be32) + size, | |
2178 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2179 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2180 | if (!call) { | |
2181 | fc->ac.error = -ENOMEM; | |
2182 | return -ENOMEM; | |
2183 | } | |
2184 | ||
2185 | call->key = fc->key; | |
a58823ac | 2186 | call->out_scb = scb; |
ffba718e | 2187 | call->out_volsync = NULL; |
f5e45463 DH |
2188 | |
2189 | /* marshall the parameters */ | |
2190 | bp = call->request; | |
2191 | bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2); | |
2192 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2193 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2194 | bp = xdr_encode_u32(bp, acl->size); | |
2195 | memcpy(bp, acl->data, acl->size); | |
2196 | if (acl->size != size) | |
2197 | memset((void *)bp + acl->size, 0, size - acl->size); | |
2198 | yfs_check_req(call, bp); | |
2199 | ||
2200 | trace_afs_make_fs_call(call, &vnode->fid); | |
2201 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2202 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 2203 | } |