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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"); | |
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}", | |
fc276122 | 444 | call->unmarshall, iov_iter_count(call->iter), req->actual_len); |
30062bd1 DH |
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]; | |
fc276122 | 479 | iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size); |
30062bd1 | 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", | |
fc276122 | 486 | iov_iter_count(call->iter), req->remain); |
30062bd1 DH |
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 */ | |
23a28913 | 508 | afs_extract_discard(call, req->actual_len - req->len); |
30062bd1 | 509 | call->unmarshall = 3; |
e690c9e3 | 510 | /* Fall through */ |
35a3a90c | 511 | |
30062bd1 DH |
512 | case 3: |
513 | _debug("extract discard %zu/%llu", | |
fc276122 | 514 | iov_iter_count(call->iter), req->actual_len - req->len); |
30062bd1 DH |
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 | 607 | call->out_volsync = NULL; |
d4438a25 | 608 | call->read_request = afs_get_read(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 | ||
30062bd1 DH |
619 | afs_use_fs_server(call, fc->cbi); |
620 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 621 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
622 | afs_make_call(&fc->ac, call, GFP_NOFS); |
623 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
624 | } |
625 | ||
626 | /* | |
627 | * Deliver reply data for YFS.CreateFile or YFS.MakeDir. | |
628 | */ | |
629 | static int yfs_deliver_fs_create_vnode(struct afs_call *call) | |
630 | { | |
30062bd1 DH |
631 | const __be32 *bp; |
632 | int ret; | |
633 | ||
634 | _enter("{%u}", call->unmarshall); | |
635 | ||
636 | ret = afs_transfer_reply(call); | |
637 | if (ret < 0) | |
638 | return ret; | |
639 | ||
640 | /* unmarshall the reply once we've received all of it */ | |
641 | bp = call->buffer; | |
ffba718e | 642 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 643 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
644 | if (ret < 0) |
645 | return ret; | |
a58823ac | 646 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
647 | if (ret < 0) |
648 | return ret; | |
a58823ac DH |
649 | xdr_decode_YFSCallBack(&bp, call, call->out_scb); |
650 | xdr_decode_YFSVolSync(&bp, call->out_volsync); | |
30062bd1 DH |
651 | |
652 | _leave(" = 0 [done]"); | |
653 | return 0; | |
654 | } | |
655 | ||
656 | /* | |
657 | * FS.CreateFile and FS.MakeDir operation type | |
658 | */ | |
659 | static const struct afs_call_type afs_RXFSCreateFile = { | |
660 | .name = "YFS.CreateFile", | |
661 | .op = yfs_FS_CreateFile, | |
662 | .deliver = yfs_deliver_fs_create_vnode, | |
663 | .destructor = afs_flat_call_destructor, | |
664 | }; | |
665 | ||
666 | /* | |
667 | * Create a file. | |
668 | */ | |
669 | int yfs_fs_create_file(struct afs_fs_cursor *fc, | |
670 | const char *name, | |
671 | umode_t mode, | |
a58823ac | 672 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 673 | struct afs_fid *newfid, |
a58823ac | 674 | struct afs_status_cb *new_scb) |
30062bd1 | 675 | { |
ffba718e | 676 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 677 | struct afs_call *call; |
ffba718e | 678 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
679 | size_t namesz, reqsz, rplsz; |
680 | __be32 *bp; | |
681 | ||
682 | _enter(""); | |
683 | ||
684 | namesz = strlen(name); | |
685 | reqsz = (sizeof(__be32) + | |
686 | sizeof(__be32) + | |
687 | sizeof(struct yfs_xdr_YFSFid) + | |
688 | xdr_strlen(namesz) + | |
689 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
690 | sizeof(__be32)); | |
691 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
692 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
693 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
694 | sizeof(struct yfs_xdr_YFSCallBack) + | |
695 | sizeof(struct yfs_xdr_YFSVolSync)); | |
696 | ||
697 | call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz); | |
698 | if (!call) | |
699 | return -ENOMEM; | |
700 | ||
701 | call->key = fc->key; | |
a58823ac | 702 | call->out_dir_scb = dvnode_scb; |
ffba718e | 703 | call->out_fid = newfid; |
a58823ac | 704 | call->out_scb = new_scb; |
30062bd1 DH |
705 | |
706 | /* marshall the parameters */ | |
707 | bp = call->request; | |
708 | bp = xdr_encode_u32(bp, YFSCREATEFILE); | |
709 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 710 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
711 | bp = xdr_encode_string(bp, name, namesz); |
712 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
5edc22cc | 713 | bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */ |
30062bd1 DH |
714 | yfs_check_req(call, bp); |
715 | ||
716 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 717 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 718 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
719 | afs_make_call(&fc->ac, call, GFP_NOFS); |
720 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
721 | } |
722 | ||
723 | static const struct afs_call_type yfs_RXFSMakeDir = { | |
724 | .name = "YFS.MakeDir", | |
725 | .op = yfs_FS_MakeDir, | |
726 | .deliver = yfs_deliver_fs_create_vnode, | |
727 | .destructor = afs_flat_call_destructor, | |
728 | }; | |
729 | ||
730 | /* | |
731 | * Make a directory. | |
732 | */ | |
733 | int yfs_fs_make_dir(struct afs_fs_cursor *fc, | |
734 | const char *name, | |
735 | umode_t mode, | |
a58823ac | 736 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 737 | struct afs_fid *newfid, |
a58823ac | 738 | struct afs_status_cb *new_scb) |
30062bd1 | 739 | { |
ffba718e | 740 | struct afs_vnode *dvnode = fc->vnode; |
30062bd1 | 741 | struct afs_call *call; |
ffba718e | 742 | struct afs_net *net = afs_v2net(dvnode); |
30062bd1 DH |
743 | size_t namesz, reqsz, rplsz; |
744 | __be32 *bp; | |
745 | ||
746 | _enter(""); | |
747 | ||
748 | namesz = strlen(name); | |
749 | reqsz = (sizeof(__be32) + | |
750 | sizeof(struct yfs_xdr_RPCFlags) + | |
751 | sizeof(struct yfs_xdr_YFSFid) + | |
752 | xdr_strlen(namesz) + | |
753 | sizeof(struct yfs_xdr_YFSStoreStatus)); | |
754 | rplsz = (sizeof(struct yfs_xdr_YFSFid) + | |
755 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
756 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
757 | sizeof(struct yfs_xdr_YFSCallBack) + | |
758 | sizeof(struct yfs_xdr_YFSVolSync)); | |
759 | ||
760 | call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz); | |
761 | if (!call) | |
762 | return -ENOMEM; | |
763 | ||
764 | call->key = fc->key; | |
a58823ac | 765 | call->out_dir_scb = dvnode_scb; |
ffba718e | 766 | call->out_fid = newfid; |
a58823ac | 767 | call->out_scb = new_scb; |
30062bd1 DH |
768 | |
769 | /* marshall the parameters */ | |
770 | bp = call->request; | |
771 | bp = xdr_encode_u32(bp, YFSMAKEDIR); | |
772 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
ffba718e | 773 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); |
30062bd1 DH |
774 | bp = xdr_encode_string(bp, name, namesz); |
775 | bp = xdr_encode_YFSStoreStatus_mode(bp, mode); | |
776 | yfs_check_req(call, bp); | |
777 | ||
778 | afs_use_fs_server(call, fc->cbi); | |
ffba718e | 779 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 780 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
781 | afs_make_call(&fc->ac, call, GFP_NOFS); |
782 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
783 | } |
784 | ||
785 | /* | |
786 | * Deliver reply data to a YFS.RemoveFile2 operation. | |
787 | */ | |
788 | static int yfs_deliver_fs_remove_file2(struct afs_call *call) | |
789 | { | |
30062bd1 DH |
790 | struct afs_fid fid; |
791 | const __be32 *bp; | |
792 | int ret; | |
793 | ||
794 | _enter("{%u}", call->unmarshall); | |
795 | ||
796 | ret = afs_transfer_reply(call); | |
797 | if (ret < 0) | |
798 | return ret; | |
799 | ||
30062bd1 | 800 | bp = call->buffer; |
a58823ac | 801 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
802 | if (ret < 0) |
803 | return ret; | |
804 | ||
805 | xdr_decode_YFSFid(&bp, &fid); | |
a58823ac | 806 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
807 | if (ret < 0) |
808 | return ret; | |
809 | /* Was deleted if vnode->status.abort_code == VNOVNODE. */ | |
810 | ||
a58823ac | 811 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
812 | return 0; |
813 | } | |
814 | ||
815 | /* | |
816 | * YFS.RemoveFile2 operation type. | |
817 | */ | |
818 | static const struct afs_call_type yfs_RXYFSRemoveFile2 = { | |
819 | .name = "YFS.RemoveFile2", | |
820 | .op = yfs_FS_RemoveFile2, | |
821 | .deliver = yfs_deliver_fs_remove_file2, | |
822 | .destructor = afs_flat_call_destructor, | |
823 | }; | |
824 | ||
825 | /* | |
826 | * Remove a file and retrieve new file status. | |
827 | */ | |
828 | int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
829 | const char *name, struct afs_status_cb *dvnode_scb, |
830 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
831 | { |
832 | struct afs_vnode *dvnode = fc->vnode; | |
833 | struct afs_call *call; | |
834 | struct afs_net *net = afs_v2net(dvnode); | |
835 | size_t namesz; | |
836 | __be32 *bp; | |
837 | ||
838 | _enter(""); | |
839 | ||
840 | namesz = strlen(name); | |
841 | ||
842 | call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2, | |
843 | sizeof(__be32) + | |
844 | sizeof(struct yfs_xdr_RPCFlags) + | |
845 | sizeof(struct yfs_xdr_YFSFid) + | |
846 | xdr_strlen(namesz), | |
847 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
848 | sizeof(struct yfs_xdr_YFSFid) + | |
849 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
850 | sizeof(struct yfs_xdr_YFSVolSync)); | |
851 | if (!call) | |
852 | return -ENOMEM; | |
853 | ||
854 | call->key = fc->key; | |
a58823ac DH |
855 | call->out_dir_scb = dvnode_scb; |
856 | call->out_scb = vnode_scb; | |
30062bd1 DH |
857 | |
858 | /* marshall the parameters */ | |
859 | bp = call->request; | |
860 | bp = xdr_encode_u32(bp, YFSREMOVEFILE2); | |
861 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
862 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
863 | bp = xdr_encode_string(bp, name, namesz); | |
864 | yfs_check_req(call, bp); | |
865 | ||
866 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 867 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 868 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
869 | afs_make_call(&fc->ac, call, GFP_NOFS); |
870 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
871 | } |
872 | ||
873 | /* | |
874 | * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation. | |
875 | */ | |
876 | static int yfs_deliver_fs_remove(struct afs_call *call) | |
877 | { | |
30062bd1 DH |
878 | const __be32 *bp; |
879 | int ret; | |
880 | ||
881 | _enter("{%u}", call->unmarshall); | |
882 | ||
883 | ret = afs_transfer_reply(call); | |
884 | if (ret < 0) | |
885 | return ret; | |
886 | ||
30062bd1 | 887 | bp = call->buffer; |
a58823ac | 888 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
889 | if (ret < 0) |
890 | return ret; | |
891 | ||
a58823ac | 892 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
893 | return 0; |
894 | } | |
895 | ||
896 | /* | |
897 | * FS.RemoveDir and FS.RemoveFile operation types. | |
898 | */ | |
899 | static const struct afs_call_type yfs_RXYFSRemoveFile = { | |
900 | .name = "YFS.RemoveFile", | |
901 | .op = yfs_FS_RemoveFile, | |
902 | .deliver = yfs_deliver_fs_remove, | |
903 | .destructor = afs_flat_call_destructor, | |
904 | }; | |
905 | ||
906 | static const struct afs_call_type yfs_RXYFSRemoveDir = { | |
907 | .name = "YFS.RemoveDir", | |
908 | .op = yfs_FS_RemoveDir, | |
909 | .deliver = yfs_deliver_fs_remove, | |
910 | .destructor = afs_flat_call_destructor, | |
911 | }; | |
912 | ||
913 | /* | |
914 | * remove a file or directory | |
915 | */ | |
916 | int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
917 | const char *name, bool isdir, |
918 | struct afs_status_cb *dvnode_scb) | |
30062bd1 DH |
919 | { |
920 | struct afs_vnode *dvnode = fc->vnode; | |
921 | struct afs_call *call; | |
922 | struct afs_net *net = afs_v2net(dvnode); | |
923 | size_t namesz; | |
924 | __be32 *bp; | |
925 | ||
926 | _enter(""); | |
927 | ||
928 | namesz = strlen(name); | |
929 | call = afs_alloc_flat_call( | |
930 | net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile, | |
931 | sizeof(__be32) + | |
932 | sizeof(struct yfs_xdr_RPCFlags) + | |
933 | sizeof(struct yfs_xdr_YFSFid) + | |
934 | xdr_strlen(namesz), | |
935 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
936 | sizeof(struct yfs_xdr_YFSVolSync)); | |
937 | if (!call) | |
938 | return -ENOMEM; | |
939 | ||
940 | call->key = fc->key; | |
a58823ac | 941 | call->out_dir_scb = dvnode_scb; |
30062bd1 DH |
942 | |
943 | /* marshall the parameters */ | |
944 | bp = call->request; | |
945 | bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE); | |
946 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
947 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
948 | bp = xdr_encode_string(bp, name, namesz); | |
949 | yfs_check_req(call, bp); | |
950 | ||
951 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 952 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 953 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
954 | afs_make_call(&fc->ac, call, GFP_NOFS); |
955 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
956 | } |
957 | ||
958 | /* | |
959 | * Deliver reply data to a YFS.Link operation. | |
960 | */ | |
961 | static int yfs_deliver_fs_link(struct afs_call *call) | |
962 | { | |
30062bd1 DH |
963 | const __be32 *bp; |
964 | int ret; | |
965 | ||
966 | _enter("{%u}", call->unmarshall); | |
967 | ||
968 | ret = afs_transfer_reply(call); | |
969 | if (ret < 0) | |
970 | return ret; | |
971 | ||
30062bd1 | 972 | bp = call->buffer; |
a58823ac | 973 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
974 | if (ret < 0) |
975 | return ret; | |
a58823ac | 976 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
977 | if (ret < 0) |
978 | return ret; | |
a58823ac | 979 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
980 | _leave(" = 0 [done]"); |
981 | return 0; | |
982 | } | |
983 | ||
984 | /* | |
985 | * YFS.Link operation type. | |
986 | */ | |
987 | static const struct afs_call_type yfs_RXYFSLink = { | |
988 | .name = "YFS.Link", | |
989 | .op = yfs_FS_Link, | |
990 | .deliver = yfs_deliver_fs_link, | |
991 | .destructor = afs_flat_call_destructor, | |
992 | }; | |
993 | ||
994 | /* | |
995 | * Make a hard link. | |
996 | */ | |
997 | int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, | |
a58823ac DH |
998 | const char *name, |
999 | struct afs_status_cb *dvnode_scb, | |
1000 | struct afs_status_cb *vnode_scb) | |
30062bd1 DH |
1001 | { |
1002 | struct afs_vnode *dvnode = fc->vnode; | |
1003 | struct afs_call *call; | |
1004 | struct afs_net *net = afs_v2net(vnode); | |
1005 | size_t namesz; | |
1006 | __be32 *bp; | |
1007 | ||
1008 | _enter(""); | |
1009 | ||
1010 | namesz = strlen(name); | |
1011 | call = afs_alloc_flat_call(net, &yfs_RXYFSLink, | |
1012 | sizeof(__be32) + | |
1013 | sizeof(struct yfs_xdr_RPCFlags) + | |
1014 | sizeof(struct yfs_xdr_YFSFid) + | |
1015 | xdr_strlen(namesz) + | |
1016 | sizeof(struct yfs_xdr_YFSFid), | |
1017 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1018 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1019 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1020 | if (!call) | |
1021 | return -ENOMEM; | |
1022 | ||
1023 | call->key = fc->key; | |
a58823ac DH |
1024 | call->out_dir_scb = dvnode_scb; |
1025 | call->out_scb = vnode_scb; | |
30062bd1 DH |
1026 | |
1027 | /* marshall the parameters */ | |
1028 | bp = call->request; | |
1029 | bp = xdr_encode_u32(bp, YFSLINK); | |
1030 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1031 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1032 | bp = xdr_encode_string(bp, name, namesz); | |
1033 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1034 | yfs_check_req(call, bp); | |
1035 | ||
1036 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1037 | trace_afs_make_fs_call1(call, &vnode->fid, name); |
20b8391f | 1038 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1039 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1040 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1041 | } |
1042 | ||
1043 | /* | |
1044 | * Deliver reply data to a YFS.Symlink operation. | |
1045 | */ | |
1046 | static int yfs_deliver_fs_symlink(struct afs_call *call) | |
1047 | { | |
30062bd1 DH |
1048 | const __be32 *bp; |
1049 | int ret; | |
1050 | ||
1051 | _enter("{%u}", call->unmarshall); | |
1052 | ||
1053 | ret = afs_transfer_reply(call); | |
1054 | if (ret < 0) | |
1055 | return ret; | |
1056 | ||
1057 | /* unmarshall the reply once we've received all of it */ | |
1058 | bp = call->buffer; | |
ffba718e | 1059 | xdr_decode_YFSFid(&bp, call->out_fid); |
a58823ac | 1060 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
30062bd1 DH |
1061 | if (ret < 0) |
1062 | return ret; | |
a58823ac | 1063 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1064 | if (ret < 0) |
1065 | return ret; | |
a58823ac | 1066 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1067 | |
1068 | _leave(" = 0 [done]"); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * YFS.Symlink operation type | |
1074 | */ | |
1075 | static const struct afs_call_type yfs_RXYFSSymlink = { | |
1076 | .name = "YFS.Symlink", | |
1077 | .op = yfs_FS_Symlink, | |
1078 | .deliver = yfs_deliver_fs_symlink, | |
1079 | .destructor = afs_flat_call_destructor, | |
1080 | }; | |
1081 | ||
1082 | /* | |
1083 | * Create a symbolic link. | |
1084 | */ | |
1085 | int yfs_fs_symlink(struct afs_fs_cursor *fc, | |
1086 | const char *name, | |
1087 | const char *contents, | |
a58823ac | 1088 | struct afs_status_cb *dvnode_scb, |
30062bd1 | 1089 | struct afs_fid *newfid, |
a58823ac | 1090 | struct afs_status_cb *vnode_scb) |
30062bd1 DH |
1091 | { |
1092 | struct afs_vnode *dvnode = fc->vnode; | |
1093 | struct afs_call *call; | |
1094 | struct afs_net *net = afs_v2net(dvnode); | |
1095 | size_t namesz, contents_sz; | |
1096 | __be32 *bp; | |
1097 | ||
1098 | _enter(""); | |
1099 | ||
1100 | namesz = strlen(name); | |
1101 | contents_sz = strlen(contents); | |
1102 | call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink, | |
1103 | sizeof(__be32) + | |
1104 | sizeof(struct yfs_xdr_RPCFlags) + | |
1105 | sizeof(struct yfs_xdr_YFSFid) + | |
1106 | xdr_strlen(namesz) + | |
1107 | xdr_strlen(contents_sz) + | |
1108 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1109 | sizeof(struct yfs_xdr_YFSFid) + | |
1110 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1111 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1112 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1113 | if (!call) | |
1114 | return -ENOMEM; | |
1115 | ||
1116 | call->key = fc->key; | |
a58823ac | 1117 | call->out_dir_scb = dvnode_scb; |
ffba718e | 1118 | call->out_fid = newfid; |
a58823ac | 1119 | call->out_scb = vnode_scb; |
30062bd1 DH |
1120 | |
1121 | /* marshall the parameters */ | |
1122 | bp = call->request; | |
1123 | bp = xdr_encode_u32(bp, YFSSYMLINK); | |
1124 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1125 | bp = xdr_encode_YFSFid(bp, &dvnode->fid); | |
1126 | bp = xdr_encode_string(bp, name, namesz); | |
1127 | bp = xdr_encode_string(bp, contents, contents_sz); | |
1128 | bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO); | |
1129 | yfs_check_req(call, bp); | |
1130 | ||
1131 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1132 | trace_afs_make_fs_call1(call, &dvnode->fid, name); |
20b8391f | 1133 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1134 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1135 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1136 | } |
1137 | ||
1138 | /* | |
1139 | * Deliver reply data to a YFS.Rename operation. | |
1140 | */ | |
1141 | static int yfs_deliver_fs_rename(struct afs_call *call) | |
1142 | { | |
30062bd1 DH |
1143 | const __be32 *bp; |
1144 | int ret; | |
1145 | ||
1146 | _enter("{%u}", call->unmarshall); | |
1147 | ||
1148 | ret = afs_transfer_reply(call); | |
1149 | if (ret < 0) | |
1150 | return ret; | |
1151 | ||
30062bd1 | 1152 | bp = call->buffer; |
a58823ac | 1153 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); |
30062bd1 DH |
1154 | if (ret < 0) |
1155 | return ret; | |
a58823ac DH |
1156 | if (call->out_dir_scb != call->out_scb) { |
1157 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); | |
30062bd1 DH |
1158 | if (ret < 0) |
1159 | return ret; | |
1160 | } | |
1161 | ||
a58823ac | 1162 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1163 | _leave(" = 0 [done]"); |
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * YFS.Rename operation type | |
1169 | */ | |
1170 | static const struct afs_call_type yfs_RXYFSRename = { | |
1171 | .name = "FS.Rename", | |
1172 | .op = yfs_FS_Rename, | |
1173 | .deliver = yfs_deliver_fs_rename, | |
1174 | .destructor = afs_flat_call_destructor, | |
1175 | }; | |
1176 | ||
1177 | /* | |
1178 | * Rename a file or directory. | |
1179 | */ | |
1180 | int yfs_fs_rename(struct afs_fs_cursor *fc, | |
1181 | const char *orig_name, | |
1182 | struct afs_vnode *new_dvnode, | |
1183 | const char *new_name, | |
a58823ac DH |
1184 | struct afs_status_cb *orig_dvnode_scb, |
1185 | struct afs_status_cb *new_dvnode_scb) | |
30062bd1 DH |
1186 | { |
1187 | struct afs_vnode *orig_dvnode = fc->vnode; | |
1188 | struct afs_call *call; | |
1189 | struct afs_net *net = afs_v2net(orig_dvnode); | |
1190 | size_t o_namesz, n_namesz; | |
1191 | __be32 *bp; | |
1192 | ||
1193 | _enter(""); | |
1194 | ||
1195 | o_namesz = strlen(orig_name); | |
1196 | n_namesz = strlen(new_name); | |
1197 | call = afs_alloc_flat_call(net, &yfs_RXYFSRename, | |
1198 | sizeof(__be32) + | |
1199 | sizeof(struct yfs_xdr_RPCFlags) + | |
1200 | sizeof(struct yfs_xdr_YFSFid) + | |
1201 | xdr_strlen(o_namesz) + | |
1202 | sizeof(struct yfs_xdr_YFSFid) + | |
1203 | xdr_strlen(n_namesz), | |
1204 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1205 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1206 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1207 | if (!call) | |
1208 | return -ENOMEM; | |
1209 | ||
1210 | call->key = fc->key; | |
a58823ac DH |
1211 | call->out_dir_scb = orig_dvnode_scb; |
1212 | call->out_scb = new_dvnode_scb; | |
30062bd1 DH |
1213 | |
1214 | /* marshall the parameters */ | |
1215 | bp = call->request; | |
1216 | bp = xdr_encode_u32(bp, YFSRENAME); | |
1217 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1218 | bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid); | |
1219 | bp = xdr_encode_string(bp, orig_name, o_namesz); | |
1220 | bp = xdr_encode_YFSFid(bp, &new_dvnode->fid); | |
1221 | bp = xdr_encode_string(bp, new_name, n_namesz); | |
1222 | yfs_check_req(call, bp); | |
1223 | ||
1224 | afs_use_fs_server(call, fc->cbi); | |
80548b03 | 1225 | trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name); |
20b8391f | 1226 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1227 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1228 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1229 | } |
1230 | ||
30062bd1 DH |
1231 | /* |
1232 | * YFS.StoreData64 operation type. | |
1233 | */ | |
1234 | static const struct afs_call_type yfs_RXYFSStoreData64 = { | |
1235 | .name = "YFS.StoreData64", | |
1236 | .op = yfs_FS_StoreData64, | |
a58823ac | 1237 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1238 | .destructor = afs_flat_call_destructor, |
1239 | }; | |
1240 | ||
1241 | /* | |
1242 | * Store a set of pages to a large file. | |
1243 | */ | |
1244 | int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, | |
1245 | pgoff_t first, pgoff_t last, | |
a58823ac DH |
1246 | unsigned offset, unsigned to, |
1247 | struct afs_status_cb *scb) | |
30062bd1 DH |
1248 | { |
1249 | struct afs_vnode *vnode = fc->vnode; | |
1250 | struct afs_call *call; | |
1251 | struct afs_net *net = afs_v2net(vnode); | |
1252 | loff_t size, pos, i_size; | |
1253 | __be32 *bp; | |
1254 | ||
1255 | _enter(",%x,{%llx:%llu},,", | |
1256 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1257 | ||
1258 | size = (loff_t)to - (loff_t)offset; | |
1259 | if (first != last) | |
1260 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1261 | pos = (loff_t)first << PAGE_SHIFT; | |
1262 | pos += offset; | |
1263 | ||
1264 | i_size = i_size_read(&vnode->vfs_inode); | |
1265 | if (pos + size > i_size) | |
1266 | i_size = size + pos; | |
1267 | ||
1268 | _debug("size %llx, at %llx, i_size %llx", | |
1269 | (unsigned long long)size, (unsigned long long)pos, | |
1270 | (unsigned long long)i_size); | |
1271 | ||
1272 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64, | |
1273 | sizeof(__be32) + | |
1274 | sizeof(__be32) + | |
1275 | sizeof(struct yfs_xdr_YFSFid) + | |
1276 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
1277 | sizeof(struct yfs_xdr_u64) * 3, | |
1278 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1279 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1280 | if (!call) | |
1281 | return -ENOMEM; | |
1282 | ||
1283 | call->key = fc->key; | |
1284 | call->mapping = mapping; | |
30062bd1 DH |
1285 | call->first = first; |
1286 | call->last = last; | |
1287 | call->first_offset = offset; | |
1288 | call->last_to = to; | |
1289 | call->send_pages = true; | |
a58823ac | 1290 | call->out_scb = scb; |
30062bd1 DH |
1291 | |
1292 | /* marshall the parameters */ | |
1293 | bp = call->request; | |
1294 | bp = xdr_encode_u32(bp, YFSSTOREDATA64); | |
1295 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1296 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1297 | bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime); | |
1298 | bp = xdr_encode_u64(bp, pos); | |
1299 | bp = xdr_encode_u64(bp, size); | |
1300 | bp = xdr_encode_u64(bp, i_size); | |
1301 | yfs_check_req(call, bp); | |
1302 | ||
1303 | afs_use_fs_server(call, fc->cbi); | |
1304 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1305 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1306 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1307 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1308 | } |
1309 | ||
30062bd1 DH |
1310 | /* |
1311 | * YFS.StoreStatus operation type | |
1312 | */ | |
1313 | static const struct afs_call_type yfs_RXYFSStoreStatus = { | |
1314 | .name = "YFS.StoreStatus", | |
1315 | .op = yfs_FS_StoreStatus, | |
a58823ac | 1316 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1317 | .destructor = afs_flat_call_destructor, |
1318 | }; | |
1319 | ||
1320 | static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = { | |
1321 | .name = "YFS.StoreData64", | |
1322 | .op = yfs_FS_StoreData64, | |
a58823ac | 1323 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1324 | .destructor = afs_flat_call_destructor, |
1325 | }; | |
1326 | ||
1327 | /* | |
1328 | * Set the attributes on a file, using YFS.StoreData64 rather than | |
1329 | * YFS.StoreStatus so as to alter the file size also. | |
1330 | */ | |
a58823ac DH |
1331 | static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr, |
1332 | struct afs_status_cb *scb) | |
30062bd1 DH |
1333 | { |
1334 | struct afs_vnode *vnode = fc->vnode; | |
1335 | struct afs_call *call; | |
1336 | struct afs_net *net = afs_v2net(vnode); | |
1337 | __be32 *bp; | |
1338 | ||
1339 | _enter(",%x,{%llx:%llu},,", | |
1340 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1341 | ||
1342 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status, | |
1343 | sizeof(__be32) * 2 + | |
1344 | sizeof(struct yfs_xdr_YFSFid) + | |
1345 | sizeof(struct yfs_xdr_YFSStoreStatus) + | |
1346 | sizeof(struct yfs_xdr_u64) * 3, | |
1347 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1348 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1349 | if (!call) | |
1350 | return -ENOMEM; | |
1351 | ||
1352 | call->key = fc->key; | |
a58823ac | 1353 | call->out_scb = scb; |
30062bd1 DH |
1354 | |
1355 | /* marshall the parameters */ | |
1356 | bp = call->request; | |
1357 | bp = xdr_encode_u32(bp, YFSSTOREDATA64); | |
1358 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1359 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1360 | bp = xdr_encode_YFS_StoreStatus(bp, attr); | |
8c7ae38d | 1361 | bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */ |
30062bd1 DH |
1362 | bp = xdr_encode_u64(bp, 0); /* size of write */ |
1363 | bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */ | |
1364 | yfs_check_req(call, bp); | |
1365 | ||
1366 | afs_use_fs_server(call, fc->cbi); | |
1367 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1368 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1369 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1370 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1371 | } |
1372 | ||
1373 | /* | |
1374 | * Set the attributes on a file, using YFS.StoreData64 if there's a change in | |
1375 | * file size, and YFS.StoreStatus otherwise. | |
1376 | */ | |
a58823ac DH |
1377 | int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr, |
1378 | struct afs_status_cb *scb) | |
30062bd1 DH |
1379 | { |
1380 | struct afs_vnode *vnode = fc->vnode; | |
1381 | struct afs_call *call; | |
1382 | struct afs_net *net = afs_v2net(vnode); | |
1383 | __be32 *bp; | |
1384 | ||
1385 | if (attr->ia_valid & ATTR_SIZE) | |
a58823ac | 1386 | return yfs_fs_setattr_size(fc, attr, scb); |
30062bd1 DH |
1387 | |
1388 | _enter(",%x,{%llx:%llu},,", | |
1389 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
1390 | ||
1391 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus, | |
1392 | sizeof(__be32) * 2 + | |
1393 | sizeof(struct yfs_xdr_YFSFid) + | |
1394 | sizeof(struct yfs_xdr_YFSStoreStatus), | |
1395 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1396 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1397 | if (!call) | |
1398 | return -ENOMEM; | |
1399 | ||
1400 | call->key = fc->key; | |
a58823ac | 1401 | call->out_scb = scb; |
30062bd1 DH |
1402 | |
1403 | /* marshall the parameters */ | |
1404 | bp = call->request; | |
1405 | bp = xdr_encode_u32(bp, YFSSTORESTATUS); | |
1406 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1407 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1408 | bp = xdr_encode_YFS_StoreStatus(bp, attr); | |
1409 | yfs_check_req(call, bp); | |
1410 | ||
1411 | afs_use_fs_server(call, fc->cbi); | |
1412 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1413 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1414 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1415 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1416 | } |
1417 | ||
1418 | /* | |
1419 | * Deliver reply data to a YFS.GetVolumeStatus operation. | |
1420 | */ | |
1421 | static int yfs_deliver_fs_get_volume_status(struct afs_call *call) | |
1422 | { | |
1423 | const __be32 *bp; | |
1424 | char *p; | |
1425 | u32 size; | |
1426 | int ret; | |
1427 | ||
1428 | _enter("{%u}", call->unmarshall); | |
1429 | ||
1430 | switch (call->unmarshall) { | |
1431 | case 0: | |
1432 | call->unmarshall++; | |
1433 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus)); | |
35a3a90c | 1434 | /* Fall through */ |
30062bd1 | 1435 | |
35a3a90c | 1436 | /* extract the returned status record */ |
30062bd1 DH |
1437 | case 1: |
1438 | _debug("extract status"); | |
1439 | ret = afs_extract_data(call, true); | |
1440 | if (ret < 0) | |
1441 | return ret; | |
1442 | ||
1443 | bp = call->buffer; | |
ffba718e | 1444 | xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus); |
30062bd1 DH |
1445 | call->unmarshall++; |
1446 | afs_extract_to_tmp(call); | |
35a3a90c | 1447 | /* Fall through */ |
30062bd1 | 1448 | |
35a3a90c | 1449 | /* extract the volume name length */ |
30062bd1 DH |
1450 | case 2: |
1451 | ret = afs_extract_data(call, true); | |
1452 | if (ret < 0) | |
1453 | return ret; | |
1454 | ||
1455 | call->count = ntohl(call->tmp); | |
1456 | _debug("volname length: %u", call->count); | |
1457 | if (call->count >= AFSNAMEMAX) | |
1458 | return afs_protocol_error(call, -EBADMSG, | |
1459 | afs_eproto_volname_len); | |
1460 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1461 | afs_extract_to_buf(call, size); |
30062bd1 | 1462 | call->unmarshall++; |
35a3a90c | 1463 | /* Fall through */ |
30062bd1 | 1464 | |
35a3a90c | 1465 | /* extract the volume name */ |
30062bd1 DH |
1466 | case 3: |
1467 | _debug("extract volname"); | |
1468 | ret = afs_extract_data(call, true); | |
1469 | if (ret < 0) | |
1470 | return ret; | |
1471 | ||
ffba718e | 1472 | p = call->buffer; |
30062bd1 DH |
1473 | p[call->count] = 0; |
1474 | _debug("volname '%s'", p); | |
1475 | afs_extract_to_tmp(call); | |
1476 | call->unmarshall++; | |
35a3a90c | 1477 | /* Fall through */ |
30062bd1 | 1478 | |
35a3a90c | 1479 | /* extract the offline message length */ |
30062bd1 DH |
1480 | case 4: |
1481 | ret = afs_extract_data(call, true); | |
1482 | if (ret < 0) | |
1483 | return ret; | |
1484 | ||
1485 | call->count = ntohl(call->tmp); | |
1486 | _debug("offline msg length: %u", call->count); | |
1487 | if (call->count >= AFSNAMEMAX) | |
1488 | return afs_protocol_error(call, -EBADMSG, | |
1489 | afs_eproto_offline_msg_len); | |
1490 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1491 | afs_extract_to_buf(call, size); |
30062bd1 | 1492 | call->unmarshall++; |
35a3a90c | 1493 | /* Fall through */ |
30062bd1 | 1494 | |
35a3a90c | 1495 | /* extract the offline message */ |
30062bd1 DH |
1496 | case 5: |
1497 | _debug("extract offline"); | |
1498 | ret = afs_extract_data(call, true); | |
1499 | if (ret < 0) | |
1500 | return ret; | |
1501 | ||
ffba718e | 1502 | p = call->buffer; |
30062bd1 DH |
1503 | p[call->count] = 0; |
1504 | _debug("offline '%s'", p); | |
1505 | ||
1506 | afs_extract_to_tmp(call); | |
1507 | call->unmarshall++; | |
35a3a90c | 1508 | /* Fall through */ |
30062bd1 | 1509 | |
35a3a90c | 1510 | /* extract the message of the day length */ |
30062bd1 DH |
1511 | case 6: |
1512 | ret = afs_extract_data(call, true); | |
1513 | if (ret < 0) | |
1514 | return ret; | |
1515 | ||
1516 | call->count = ntohl(call->tmp); | |
1517 | _debug("motd length: %u", call->count); | |
1518 | if (call->count >= AFSNAMEMAX) | |
1519 | return afs_protocol_error(call, -EBADMSG, | |
1520 | afs_eproto_motd_len); | |
1521 | size = (call->count + 3) & ~3; /* It's padded */ | |
ffba718e | 1522 | afs_extract_to_buf(call, size); |
30062bd1 | 1523 | call->unmarshall++; |
35a3a90c | 1524 | /* Fall through */ |
30062bd1 | 1525 | |
35a3a90c | 1526 | /* extract the message of the day */ |
30062bd1 DH |
1527 | case 7: |
1528 | _debug("extract motd"); | |
1529 | ret = afs_extract_data(call, false); | |
1530 | if (ret < 0) | |
1531 | return ret; | |
1532 | ||
ffba718e | 1533 | p = call->buffer; |
30062bd1 DH |
1534 | p[call->count] = 0; |
1535 | _debug("motd '%s'", p); | |
1536 | ||
1537 | call->unmarshall++; | |
e690c9e3 | 1538 | /* Fall through */ |
35a3a90c | 1539 | |
30062bd1 DH |
1540 | case 8: |
1541 | break; | |
1542 | } | |
1543 | ||
1544 | _leave(" = 0 [done]"); | |
1545 | return 0; | |
1546 | } | |
1547 | ||
30062bd1 DH |
1548 | /* |
1549 | * YFS.GetVolumeStatus operation type | |
1550 | */ | |
1551 | static const struct afs_call_type yfs_RXYFSGetVolumeStatus = { | |
1552 | .name = "YFS.GetVolumeStatus", | |
1553 | .op = yfs_FS_GetVolumeStatus, | |
1554 | .deliver = yfs_deliver_fs_get_volume_status, | |
ffba718e | 1555 | .destructor = afs_flat_call_destructor, |
30062bd1 DH |
1556 | }; |
1557 | ||
1558 | /* | |
1559 | * fetch the status of a volume | |
1560 | */ | |
1561 | int yfs_fs_get_volume_status(struct afs_fs_cursor *fc, | |
1562 | struct afs_volume_status *vs) | |
1563 | { | |
1564 | struct afs_vnode *vnode = fc->vnode; | |
1565 | struct afs_call *call; | |
1566 | struct afs_net *net = afs_v2net(vnode); | |
1567 | __be32 *bp; | |
30062bd1 DH |
1568 | |
1569 | _enter(""); | |
1570 | ||
30062bd1 DH |
1571 | call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus, |
1572 | sizeof(__be32) * 2 + | |
1573 | sizeof(struct yfs_xdr_u64), | |
ffba718e DH |
1574 | max_t(size_t, |
1575 | sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + | |
1576 | sizeof(__be32), | |
1577 | AFSOPAQUEMAX + 1)); | |
1578 | if (!call) | |
30062bd1 | 1579 | return -ENOMEM; |
30062bd1 DH |
1580 | |
1581 | call->key = fc->key; | |
ffba718e | 1582 | call->out_volstatus = vs; |
30062bd1 DH |
1583 | |
1584 | /* marshall the parameters */ | |
1585 | bp = call->request; | |
1586 | bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS); | |
1587 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1588 | bp = xdr_encode_u64(bp, vnode->fid.vid); | |
1589 | yfs_check_req(call, bp); | |
1590 | ||
1591 | afs_use_fs_server(call, fc->cbi); | |
1592 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1593 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1594 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1595 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1596 | } |
1597 | ||
30062bd1 DH |
1598 | /* |
1599 | * YFS.SetLock operation type | |
1600 | */ | |
1601 | static const struct afs_call_type yfs_RXYFSSetLock = { | |
1602 | .name = "YFS.SetLock", | |
1603 | .op = yfs_FS_SetLock, | |
f5e45463 | 1604 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1605 | .done = afs_lock_op_done, |
30062bd1 DH |
1606 | .destructor = afs_flat_call_destructor, |
1607 | }; | |
1608 | ||
1609 | /* | |
1610 | * YFS.ExtendLock operation type | |
1611 | */ | |
1612 | static const struct afs_call_type yfs_RXYFSExtendLock = { | |
1613 | .name = "YFS.ExtendLock", | |
1614 | .op = yfs_FS_ExtendLock, | |
f5e45463 | 1615 | .deliver = yfs_deliver_status_and_volsync, |
a690f60a | 1616 | .done = afs_lock_op_done, |
30062bd1 DH |
1617 | .destructor = afs_flat_call_destructor, |
1618 | }; | |
1619 | ||
1620 | /* | |
1621 | * YFS.ReleaseLock operation type | |
1622 | */ | |
1623 | static const struct afs_call_type yfs_RXYFSReleaseLock = { | |
1624 | .name = "YFS.ReleaseLock", | |
1625 | .op = yfs_FS_ReleaseLock, | |
f5e45463 | 1626 | .deliver = yfs_deliver_status_and_volsync, |
30062bd1 DH |
1627 | .destructor = afs_flat_call_destructor, |
1628 | }; | |
1629 | ||
1630 | /* | |
1631 | * Set a lock on a file | |
1632 | */ | |
a58823ac DH |
1633 | int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type, |
1634 | struct afs_status_cb *scb) | |
30062bd1 DH |
1635 | { |
1636 | struct afs_vnode *vnode = fc->vnode; | |
1637 | struct afs_call *call; | |
1638 | struct afs_net *net = afs_v2net(vnode); | |
1639 | __be32 *bp; | |
1640 | ||
1641 | _enter(""); | |
1642 | ||
1643 | call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock, | |
1644 | sizeof(__be32) * 2 + | |
1645 | sizeof(struct yfs_xdr_YFSFid) + | |
1646 | sizeof(__be32), | |
1647 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1648 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1649 | if (!call) | |
1650 | return -ENOMEM; | |
1651 | ||
1652 | call->key = fc->key; | |
a58823ac DH |
1653 | call->lvnode = vnode; |
1654 | call->out_scb = scb; | |
30062bd1 DH |
1655 | |
1656 | /* marshall the parameters */ | |
1657 | bp = call->request; | |
1658 | bp = xdr_encode_u32(bp, YFSSETLOCK); | |
1659 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1660 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1661 | bp = xdr_encode_u32(bp, type); | |
1662 | yfs_check_req(call, bp); | |
1663 | ||
1664 | afs_use_fs_server(call, fc->cbi); | |
6c6c1d63 | 1665 | trace_afs_make_fs_calli(call, &vnode->fid, type); |
20b8391f | 1666 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1667 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1668 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1669 | } |
1670 | ||
1671 | /* | |
1672 | * extend a lock on a file | |
1673 | */ | |
a58823ac | 1674 | int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1675 | { |
1676 | struct afs_vnode *vnode = fc->vnode; | |
1677 | struct afs_call *call; | |
1678 | struct afs_net *net = afs_v2net(vnode); | |
1679 | __be32 *bp; | |
1680 | ||
1681 | _enter(""); | |
1682 | ||
1683 | call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock, | |
1684 | sizeof(__be32) * 2 + | |
1685 | sizeof(struct yfs_xdr_YFSFid), | |
1686 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1687 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1688 | if (!call) | |
1689 | return -ENOMEM; | |
1690 | ||
1691 | call->key = fc->key; | |
a58823ac DH |
1692 | call->lvnode = vnode; |
1693 | call->out_scb = scb; | |
30062bd1 DH |
1694 | |
1695 | /* marshall the parameters */ | |
1696 | bp = call->request; | |
1697 | bp = xdr_encode_u32(bp, YFSEXTENDLOCK); | |
1698 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1699 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1700 | yfs_check_req(call, bp); | |
1701 | ||
1702 | afs_use_fs_server(call, fc->cbi); | |
1703 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1704 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1705 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1706 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1707 | } |
1708 | ||
1709 | /* | |
1710 | * release a lock on a file | |
1711 | */ | |
a58823ac | 1712 | int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) |
30062bd1 DH |
1713 | { |
1714 | struct afs_vnode *vnode = fc->vnode; | |
1715 | struct afs_call *call; | |
1716 | struct afs_net *net = afs_v2net(vnode); | |
1717 | __be32 *bp; | |
1718 | ||
1719 | _enter(""); | |
1720 | ||
1721 | call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock, | |
1722 | sizeof(__be32) * 2 + | |
1723 | sizeof(struct yfs_xdr_YFSFid), | |
1724 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1725 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1726 | if (!call) | |
1727 | return -ENOMEM; | |
1728 | ||
1729 | call->key = fc->key; | |
a58823ac DH |
1730 | call->lvnode = vnode; |
1731 | call->out_scb = scb; | |
30062bd1 DH |
1732 | |
1733 | /* marshall the parameters */ | |
1734 | bp = call->request; | |
1735 | bp = xdr_encode_u32(bp, YFSRELEASELOCK); | |
1736 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1737 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
1738 | yfs_check_req(call, bp); | |
1739 | ||
1740 | afs_use_fs_server(call, fc->cbi); | |
1741 | trace_afs_make_fs_call(call, &vnode->fid); | |
20b8391f | 1742 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1743 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1744 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1745 | } |
1746 | ||
30062bd1 DH |
1747 | /* |
1748 | * YFS.FetchStatus operation type | |
1749 | */ | |
1750 | static const struct afs_call_type yfs_RXYFSFetchStatus = { | |
1751 | .name = "YFS.FetchStatus", | |
1752 | .op = yfs_FS_FetchStatus, | |
a58823ac | 1753 | .deliver = yfs_deliver_fs_status_cb_and_volsync, |
30062bd1 DH |
1754 | .destructor = afs_flat_call_destructor, |
1755 | }; | |
1756 | ||
1757 | /* | |
1758 | * Fetch the status information for a fid without needing a vnode handle. | |
1759 | */ | |
1760 | int yfs_fs_fetch_status(struct afs_fs_cursor *fc, | |
1761 | struct afs_net *net, | |
1762 | struct afs_fid *fid, | |
a58823ac | 1763 | struct afs_status_cb *scb, |
30062bd1 DH |
1764 | struct afs_volsync *volsync) |
1765 | { | |
1766 | struct afs_call *call; | |
1767 | __be32 *bp; | |
1768 | ||
1769 | _enter(",%x,{%llx:%llu},,", | |
1770 | key_serial(fc->key), fid->vid, fid->vnode); | |
1771 | ||
1772 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus, | |
1773 | sizeof(__be32) * 2 + | |
1774 | sizeof(struct yfs_xdr_YFSFid), | |
1775 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
1776 | sizeof(struct yfs_xdr_YFSCallBack) + | |
1777 | sizeof(struct yfs_xdr_YFSVolSync)); | |
1778 | if (!call) { | |
1779 | fc->ac.error = -ENOMEM; | |
1780 | return -ENOMEM; | |
1781 | } | |
1782 | ||
1783 | call->key = fc->key; | |
a58823ac | 1784 | call->out_scb = scb; |
ffba718e | 1785 | call->out_volsync = volsync; |
30062bd1 DH |
1786 | |
1787 | /* marshall the parameters */ | |
1788 | bp = call->request; | |
1789 | bp = xdr_encode_u32(bp, YFSFETCHSTATUS); | |
1790 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
1791 | bp = xdr_encode_YFSFid(bp, fid); | |
1792 | yfs_check_req(call, bp); | |
1793 | ||
30062bd1 DH |
1794 | afs_use_fs_server(call, fc->cbi); |
1795 | trace_afs_make_fs_call(call, fid); | |
20b8391f | 1796 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1797 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1798 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 DH |
1799 | } |
1800 | ||
1801 | /* | |
1802 | * Deliver reply data to an YFS.InlineBulkStatus call | |
1803 | */ | |
1804 | static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) | |
1805 | { | |
87182759 | 1806 | struct afs_status_cb *scb; |
30062bd1 DH |
1807 | const __be32 *bp; |
1808 | u32 tmp; | |
1809 | int ret; | |
1810 | ||
1811 | _enter("{%u}", call->unmarshall); | |
1812 | ||
1813 | switch (call->unmarshall) { | |
1814 | case 0: | |
1815 | afs_extract_to_tmp(call); | |
1816 | call->unmarshall++; | |
35a3a90c | 1817 | /* Fall through */ |
30062bd1 DH |
1818 | |
1819 | /* Extract the file status count and array in two steps */ | |
1820 | case 1: | |
1821 | _debug("extract status count"); | |
1822 | ret = afs_extract_data(call, true); | |
1823 | if (ret < 0) | |
1824 | return ret; | |
1825 | ||
1826 | tmp = ntohl(call->tmp); | |
1827 | _debug("status count: %u/%u", tmp, call->count2); | |
1828 | if (tmp != call->count2) | |
1829 | return afs_protocol_error(call, -EBADMSG, | |
1830 | afs_eproto_ibulkst_count); | |
1831 | ||
1832 | call->count = 0; | |
1833 | call->unmarshall++; | |
1834 | more_counts: | |
1835 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus)); | |
e690c9e3 | 1836 | /* Fall through */ |
35a3a90c | 1837 | |
30062bd1 DH |
1838 | case 2: |
1839 | _debug("extract status array %u", call->count); | |
1840 | ret = afs_extract_data(call, true); | |
1841 | if (ret < 0) | |
1842 | return ret; | |
1843 | ||
1844 | bp = call->buffer; | |
87182759 | 1845 | scb = &call->out_scb[call->count]; |
a58823ac | 1846 | ret = xdr_decode_YFSFetchStatus(&bp, call, scb); |
30062bd1 DH |
1847 | if (ret < 0) |
1848 | return ret; | |
1849 | ||
1850 | call->count++; | |
1851 | if (call->count < call->count2) | |
1852 | goto more_counts; | |
1853 | ||
1854 | call->count = 0; | |
1855 | call->unmarshall++; | |
1856 | afs_extract_to_tmp(call); | |
35a3a90c | 1857 | /* Fall through */ |
30062bd1 DH |
1858 | |
1859 | /* Extract the callback count and array in two steps */ | |
1860 | case 3: | |
1861 | _debug("extract CB count"); | |
1862 | ret = afs_extract_data(call, true); | |
1863 | if (ret < 0) | |
1864 | return ret; | |
1865 | ||
1866 | tmp = ntohl(call->tmp); | |
1867 | _debug("CB count: %u", tmp); | |
1868 | if (tmp != call->count2) | |
1869 | return afs_protocol_error(call, -EBADMSG, | |
1870 | afs_eproto_ibulkst_cb_count); | |
1871 | call->count = 0; | |
1872 | call->unmarshall++; | |
1873 | more_cbs: | |
1874 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack)); | |
e690c9e3 | 1875 | /* Fall through */ |
35a3a90c | 1876 | |
30062bd1 DH |
1877 | case 4: |
1878 | _debug("extract CB array"); | |
1879 | ret = afs_extract_data(call, true); | |
1880 | if (ret < 0) | |
1881 | return ret; | |
1882 | ||
1883 | _debug("unmarshall CB array"); | |
1884 | bp = call->buffer; | |
87182759 | 1885 | scb = &call->out_scb[call->count]; |
a58823ac | 1886 | xdr_decode_YFSCallBack(&bp, call, scb); |
30062bd1 DH |
1887 | call->count++; |
1888 | if (call->count < call->count2) | |
1889 | goto more_cbs; | |
1890 | ||
1891 | afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync)); | |
1892 | call->unmarshall++; | |
e690c9e3 | 1893 | /* Fall through */ |
35a3a90c | 1894 | |
30062bd1 DH |
1895 | case 5: |
1896 | ret = afs_extract_data(call, false); | |
1897 | if (ret < 0) | |
1898 | return ret; | |
1899 | ||
1900 | bp = call->buffer; | |
ffba718e | 1901 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
30062bd1 DH |
1902 | |
1903 | call->unmarshall++; | |
e690c9e3 | 1904 | /* Fall through */ |
35a3a90c | 1905 | |
30062bd1 DH |
1906 | case 6: |
1907 | break; | |
1908 | } | |
1909 | ||
1910 | _leave(" = 0 [done]"); | |
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | /* | |
1915 | * FS.InlineBulkStatus operation type | |
1916 | */ | |
1917 | static const struct afs_call_type yfs_RXYFSInlineBulkStatus = { | |
1918 | .name = "YFS.InlineBulkStatus", | |
1919 | .op = yfs_FS_InlineBulkStatus, | |
1920 | .deliver = yfs_deliver_fs_inline_bulk_status, | |
1921 | .destructor = afs_flat_call_destructor, | |
1922 | }; | |
1923 | ||
1924 | /* | |
1925 | * Fetch the status information for up to 1024 files | |
1926 | */ | |
1927 | int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, | |
1928 | struct afs_net *net, | |
1929 | struct afs_fid *fids, | |
87182759 | 1930 | struct afs_status_cb *statuses, |
30062bd1 DH |
1931 | unsigned int nr_fids, |
1932 | struct afs_volsync *volsync) | |
1933 | { | |
1934 | struct afs_call *call; | |
1935 | __be32 *bp; | |
1936 | int i; | |
1937 | ||
1938 | _enter(",%x,{%llx:%llu},%u", | |
1939 | key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids); | |
1940 | ||
1941 | call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus, | |
1942 | sizeof(__be32) + | |
1943 | sizeof(__be32) + | |
1944 | sizeof(__be32) + | |
1945 | sizeof(struct yfs_xdr_YFSFid) * nr_fids, | |
1946 | sizeof(struct yfs_xdr_YFSFetchStatus)); | |
1947 | if (!call) { | |
1948 | fc->ac.error = -ENOMEM; | |
1949 | return -ENOMEM; | |
1950 | } | |
1951 | ||
1952 | call->key = fc->key; | |
87182759 | 1953 | call->out_scb = statuses; |
ffba718e | 1954 | call->out_volsync = volsync; |
30062bd1 DH |
1955 | call->count2 = nr_fids; |
1956 | ||
1957 | /* marshall the parameters */ | |
1958 | bp = call->request; | |
1959 | bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS); | |
1960 | bp = xdr_encode_u32(bp, 0); /* RPCFlags */ | |
1961 | bp = xdr_encode_u32(bp, nr_fids); | |
1962 | for (i = 0; i < nr_fids; i++) | |
1963 | bp = xdr_encode_YFSFid(bp, &fids[i]); | |
1964 | yfs_check_req(call, bp); | |
1965 | ||
30062bd1 DH |
1966 | afs_use_fs_server(call, fc->cbi); |
1967 | trace_afs_make_fs_call(call, &fids[0]); | |
20b8391f | 1968 | afs_set_fc_call(call, fc); |
0b9bf381 DH |
1969 | afs_make_call(&fc->ac, call, GFP_NOFS); |
1970 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 1971 | } |
ae46578b DH |
1972 | |
1973 | /* | |
1974 | * Deliver reply data to an YFS.FetchOpaqueACL. | |
1975 | */ | |
1976 | static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) | |
1977 | { | |
ffba718e | 1978 | struct yfs_acl *yacl = call->out_yacl; |
ae46578b DH |
1979 | struct afs_acl *acl; |
1980 | const __be32 *bp; | |
1981 | unsigned int size; | |
1982 | int ret; | |
1983 | ||
1984 | _enter("{%u}", call->unmarshall); | |
1985 | ||
1986 | switch (call->unmarshall) { | |
1987 | case 0: | |
1988 | afs_extract_to_tmp(call); | |
1989 | call->unmarshall++; | |
35a3a90c | 1990 | /* Fall through */ |
ae46578b DH |
1991 | |
1992 | /* Extract the file ACL length */ | |
1993 | case 1: | |
1994 | ret = afs_extract_data(call, true); | |
1995 | if (ret < 0) | |
1996 | return ret; | |
1997 | ||
1998 | size = call->count2 = ntohl(call->tmp); | |
1999 | size = round_up(size, 4); | |
2000 | ||
2001 | if (yacl->flags & YFS_ACL_WANT_ACL) { | |
2002 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2003 | if (!acl) | |
2004 | return -ENOMEM; | |
2005 | yacl->acl = acl; | |
2006 | acl->size = call->count2; | |
2007 | afs_extract_begin(call, acl->data, size); | |
2008 | } else { | |
23a28913 | 2009 | afs_extract_discard(call, size); |
ae46578b DH |
2010 | } |
2011 | call->unmarshall++; | |
35a3a90c | 2012 | /* Fall through */ |
ae46578b DH |
2013 | |
2014 | /* Extract the file ACL */ | |
2015 | case 2: | |
2016 | ret = afs_extract_data(call, true); | |
2017 | if (ret < 0) | |
2018 | return ret; | |
2019 | ||
2020 | afs_extract_to_tmp(call); | |
2021 | call->unmarshall++; | |
35a3a90c | 2022 | /* Fall through */ |
ae46578b DH |
2023 | |
2024 | /* Extract the volume ACL length */ | |
2025 | case 3: | |
2026 | ret = afs_extract_data(call, true); | |
2027 | if (ret < 0) | |
2028 | return ret; | |
2029 | ||
2030 | size = call->count2 = ntohl(call->tmp); | |
2031 | size = round_up(size, 4); | |
2032 | ||
2033 | if (yacl->flags & YFS_ACL_WANT_VOL_ACL) { | |
2034 | acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); | |
2035 | if (!acl) | |
2036 | return -ENOMEM; | |
2037 | yacl->vol_acl = acl; | |
2038 | acl->size = call->count2; | |
2039 | afs_extract_begin(call, acl->data, size); | |
2040 | } else { | |
23a28913 | 2041 | afs_extract_discard(call, size); |
ae46578b DH |
2042 | } |
2043 | call->unmarshall++; | |
35a3a90c | 2044 | /* Fall through */ |
ae46578b DH |
2045 | |
2046 | /* Extract the volume ACL */ | |
2047 | case 4: | |
2048 | ret = afs_extract_data(call, true); | |
2049 | if (ret < 0) | |
2050 | return ret; | |
2051 | ||
2052 | afs_extract_to_buf(call, | |
2053 | sizeof(__be32) * 2 + | |
2054 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2055 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2056 | call->unmarshall++; | |
35a3a90c | 2057 | /* Fall through */ |
ae46578b DH |
2058 | |
2059 | /* extract the metadata */ | |
2060 | case 5: | |
2061 | ret = afs_extract_data(call, false); | |
2062 | if (ret < 0) | |
2063 | return ret; | |
2064 | ||
2065 | bp = call->buffer; | |
2066 | yacl->inherit_flag = ntohl(*bp++); | |
2067 | yacl->num_cleaned = ntohl(*bp++); | |
a58823ac | 2068 | ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); |
ae46578b DH |
2069 | if (ret < 0) |
2070 | return ret; | |
a58823ac | 2071 | xdr_decode_YFSVolSync(&bp, call->out_volsync); |
ae46578b DH |
2072 | |
2073 | call->unmarshall++; | |
35a3a90c | 2074 | /* Fall through */ |
ae46578b DH |
2075 | |
2076 | case 6: | |
2077 | break; | |
2078 | } | |
2079 | ||
2080 | _leave(" = 0 [done]"); | |
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | void yfs_free_opaque_acl(struct yfs_acl *yacl) | |
2085 | { | |
2086 | if (yacl) { | |
2087 | kfree(yacl->acl); | |
2088 | kfree(yacl->vol_acl); | |
2089 | kfree(yacl); | |
2090 | } | |
2091 | } | |
2092 | ||
ae46578b DH |
2093 | /* |
2094 | * YFS.FetchOpaqueACL operation type | |
2095 | */ | |
2096 | static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { | |
2097 | .name = "YFS.FetchOpaqueACL", | |
2098 | .op = yfs_FS_FetchOpaqueACL, | |
2099 | .deliver = yfs_deliver_fs_fetch_opaque_acl, | |
773e0c40 | 2100 | .destructor = afs_flat_call_destructor, |
ae46578b DH |
2101 | }; |
2102 | ||
2103 | /* | |
2104 | * Fetch the YFS advanced ACLs for a file. | |
2105 | */ | |
2106 | struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, | |
a58823ac DH |
2107 | struct yfs_acl *yacl, |
2108 | struct afs_status_cb *scb) | |
ae46578b DH |
2109 | { |
2110 | struct afs_vnode *vnode = fc->vnode; | |
2111 | struct afs_call *call; | |
ae46578b DH |
2112 | struct afs_net *net = afs_v2net(vnode); |
2113 | __be32 *bp; | |
2114 | ||
2115 | _enter(",%x,{%llx:%llu},,", | |
2116 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2117 | ||
2118 | call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL, | |
2119 | sizeof(__be32) * 2 + | |
2120 | sizeof(struct yfs_xdr_YFSFid), | |
2121 | sizeof(__be32) * 2 + | |
2122 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2123 | sizeof(struct yfs_xdr_YFSVolSync)); | |
773e0c40 DH |
2124 | if (!call) { |
2125 | fc->ac.error = -ENOMEM; | |
2126 | return ERR_PTR(-ENOMEM); | |
2127 | } | |
ae46578b | 2128 | |
ae46578b | 2129 | call->key = fc->key; |
ffba718e | 2130 | call->out_yacl = yacl; |
a58823ac DH |
2131 | call->out_scb = scb; |
2132 | call->out_volsync = NULL; | |
ae46578b DH |
2133 | |
2134 | /* marshall the parameters */ | |
2135 | bp = call->request; | |
2136 | bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL); | |
2137 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2138 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2139 | yfs_check_req(call, bp); | |
2140 | ||
ae46578b DH |
2141 | afs_use_fs_server(call, fc->cbi); |
2142 | trace_afs_make_fs_call(call, &vnode->fid); | |
2143 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2144 | return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac); | |
ae46578b | 2145 | } |
f5e45463 DH |
2146 | |
2147 | /* | |
2148 | * YFS.StoreOpaqueACL2 operation type | |
2149 | */ | |
2150 | static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { | |
2151 | .name = "YFS.StoreOpaqueACL2", | |
2152 | .op = yfs_FS_StoreOpaqueACL2, | |
2153 | .deliver = yfs_deliver_status_and_volsync, | |
2154 | .destructor = afs_flat_call_destructor, | |
2155 | }; | |
2156 | ||
2157 | /* | |
2158 | * Fetch the YFS ACL for a file. | |
2159 | */ | |
a58823ac DH |
2160 | int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl, |
2161 | struct afs_status_cb *scb) | |
f5e45463 DH |
2162 | { |
2163 | struct afs_vnode *vnode = fc->vnode; | |
2164 | struct afs_call *call; | |
2165 | struct afs_net *net = afs_v2net(vnode); | |
2166 | size_t size; | |
2167 | __be32 *bp; | |
2168 | ||
2169 | _enter(",%x,{%llx:%llu},,", | |
2170 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); | |
2171 | ||
2172 | size = round_up(acl->size, 4); | |
7533be85 | 2173 | call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2, |
f5e45463 DH |
2174 | sizeof(__be32) * 2 + |
2175 | sizeof(struct yfs_xdr_YFSFid) + | |
2176 | sizeof(__be32) + size, | |
2177 | sizeof(struct yfs_xdr_YFSFetchStatus) + | |
2178 | sizeof(struct yfs_xdr_YFSVolSync)); | |
2179 | if (!call) { | |
2180 | fc->ac.error = -ENOMEM; | |
2181 | return -ENOMEM; | |
2182 | } | |
2183 | ||
2184 | call->key = fc->key; | |
a58823ac | 2185 | call->out_scb = scb; |
ffba718e | 2186 | call->out_volsync = NULL; |
f5e45463 DH |
2187 | |
2188 | /* marshall the parameters */ | |
2189 | bp = call->request; | |
2190 | bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2); | |
2191 | bp = xdr_encode_u32(bp, 0); /* RPC flags */ | |
2192 | bp = xdr_encode_YFSFid(bp, &vnode->fid); | |
2193 | bp = xdr_encode_u32(bp, acl->size); | |
2194 | memcpy(bp, acl->data, acl->size); | |
2195 | if (acl->size != size) | |
2196 | memset((void *)bp + acl->size, 0, size - acl->size); | |
2197 | yfs_check_req(call, bp); | |
2198 | ||
2199 | trace_afs_make_fs_call(call, &vnode->fid); | |
2200 | afs_make_call(&fc->ac, call, GFP_KERNEL); | |
2201 | return afs_wait_for_call_to_complete(call, &fc->ac); | |
30062bd1 | 2202 | } |