Commit | Line | Data |
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08e0e7c8 | 1 | /* AFS File Server client stubs |
1da177e4 | 2 | * |
08e0e7c8 | 3 | * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
1da177e4 LT |
4 | * Written by David Howells (dhowells@redhat.com) |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/init.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
1da177e4 | 14 | #include <linux/sched.h> |
08e0e7c8 | 15 | #include <linux/circ_buf.h> |
1da177e4 | 16 | #include "internal.h" |
08e0e7c8 | 17 | #include "afs_fs.h" |
1da177e4 | 18 | |
6db3ac3c DH |
19 | /* |
20 | * We need somewhere to discard into in case the server helpfully returns more | |
21 | * than we asked for in FS.FetchData{,64}. | |
22 | */ | |
23 | static u8 afs_discard_buffer[64]; | |
24 | ||
260a9803 DH |
25 | /* |
26 | * decode an AFSFid block | |
27 | */ | |
28 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
29 | { | |
30 | const __be32 *bp = *_bp; | |
31 | ||
32 | fid->vid = ntohl(*bp++); | |
33 | fid->vnode = ntohl(*bp++); | |
34 | fid->unique = ntohl(*bp++); | |
35 | *_bp = bp; | |
36 | } | |
37 | ||
1da177e4 | 38 | /* |
08e0e7c8 | 39 | * decode an AFSFetchStatus block |
1da177e4 | 40 | */ |
08e0e7c8 | 41 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 42 | struct afs_file_status *status, |
31143d5d DH |
43 | struct afs_vnode *vnode, |
44 | afs_dataversion_t *store_version) | |
1da177e4 | 45 | { |
31143d5d | 46 | afs_dataversion_t expected_version; |
08e0e7c8 DH |
47 | const __be32 *bp = *_bp; |
48 | umode_t mode; | |
260a9803 | 49 | u64 data_version, size; |
08e0e7c8 | 50 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
a0a5386a EB |
51 | kuid_t owner; |
52 | kgid_t group; | |
08e0e7c8 DH |
53 | |
54 | #define EXTRACT(DST) \ | |
55 | do { \ | |
56 | u32 x = ntohl(*bp++); \ | |
57 | changed |= DST - x; \ | |
58 | DST = x; \ | |
59 | } while (0) | |
60 | ||
260a9803 DH |
61 | status->if_version = ntohl(*bp++); |
62 | EXTRACT(status->type); | |
63 | EXTRACT(status->nlink); | |
64 | size = ntohl(*bp++); | |
08e0e7c8 | 65 | data_version = ntohl(*bp++); |
260a9803 | 66 | EXTRACT(status->author); |
a0a5386a EB |
67 | owner = make_kuid(&init_user_ns, ntohl(*bp++)); |
68 | changed |= !uid_eq(owner, status->owner); | |
69 | status->owner = owner; | |
260a9803 DH |
70 | EXTRACT(status->caller_access); /* call ticket dependent */ |
71 | EXTRACT(status->anon_access); | |
72 | EXTRACT(status->mode); | |
73 | EXTRACT(status->parent.vnode); | |
74 | EXTRACT(status->parent.unique); | |
08e0e7c8 | 75 | bp++; /* seg size */ |
260a9803 DH |
76 | status->mtime_client = ntohl(*bp++); |
77 | status->mtime_server = ntohl(*bp++); | |
a0a5386a EB |
78 | group = make_kgid(&init_user_ns, ntohl(*bp++)); |
79 | changed |= !gid_eq(group, status->group); | |
80 | status->group = group; | |
08e0e7c8 DH |
81 | bp++; /* sync counter */ |
82 | data_version |= (u64) ntohl(*bp++) << 32; | |
e8d6c554 | 83 | EXTRACT(status->lock_count); |
260a9803 DH |
84 | size |= (u64) ntohl(*bp++) << 32; |
85 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
86 | *_bp = bp; |
87 | ||
260a9803 DH |
88 | if (size != status->size) { |
89 | status->size = size; | |
90 | changed |= true; | |
08e0e7c8 | 91 | } |
260a9803 | 92 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
93 | |
94 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
95 | status->mtime_client, status->mtime_server); |
96 | ||
97 | if (vnode) { | |
98 | status->parent.vid = vnode->fid.vid; | |
99 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
100 | _debug("vnode changed"); | |
101 | i_size_write(&vnode->vfs_inode, size); | |
102 | vnode->vfs_inode.i_uid = status->owner; | |
103 | vnode->vfs_inode.i_gid = status->group; | |
d6e43f75 | 104 | vnode->vfs_inode.i_generation = vnode->fid.unique; |
bfe86848 | 105 | set_nlink(&vnode->vfs_inode, status->nlink); |
260a9803 DH |
106 | |
107 | mode = vnode->vfs_inode.i_mode; | |
108 | mode &= ~S_IALLUGO; | |
109 | mode |= status->mode; | |
110 | barrier(); | |
111 | vnode->vfs_inode.i_mode = mode; | |
112 | } | |
113 | ||
ab94f5d0 | 114 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_client; |
260a9803 DH |
115 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; |
116 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
d6e43f75 | 117 | vnode->vfs_inode.i_version = data_version; |
260a9803 DH |
118 | } |
119 | ||
31143d5d DH |
120 | expected_version = status->data_version; |
121 | if (store_version) | |
122 | expected_version = *store_version; | |
123 | ||
124 | if (expected_version != data_version) { | |
260a9803 DH |
125 | status->data_version = data_version; |
126 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
127 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
128 | (unsigned long long) data_version, |
129 | vnode->fid.vid, vnode->fid.vnode); | |
260a9803 DH |
130 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
131 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); | |
132 | } | |
31143d5d DH |
133 | } else if (store_version) { |
134 | status->data_version = data_version; | |
1da177e4 | 135 | } |
ec26815a | 136 | } |
1da177e4 | 137 | |
1da177e4 | 138 | /* |
08e0e7c8 | 139 | * decode an AFSCallBack block |
1da177e4 | 140 | */ |
08e0e7c8 | 141 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
1da177e4 | 142 | { |
08e0e7c8 | 143 | const __be32 *bp = *_bp; |
1da177e4 | 144 | |
08e0e7c8 DH |
145 | vnode->cb_version = ntohl(*bp++); |
146 | vnode->cb_expiry = ntohl(*bp++); | |
147 | vnode->cb_type = ntohl(*bp++); | |
56e71431 | 148 | vnode->cb_expires = vnode->cb_expiry + ktime_get_real_seconds(); |
08e0e7c8 | 149 | *_bp = bp; |
ec26815a | 150 | } |
1da177e4 | 151 | |
260a9803 DH |
152 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
153 | struct afs_callback *cb) | |
154 | { | |
155 | const __be32 *bp = *_bp; | |
156 | ||
157 | cb->version = ntohl(*bp++); | |
158 | cb->expiry = ntohl(*bp++); | |
159 | cb->type = ntohl(*bp++); | |
160 | *_bp = bp; | |
161 | } | |
162 | ||
1da177e4 | 163 | /* |
08e0e7c8 | 164 | * decode an AFSVolSync block |
1da177e4 | 165 | */ |
08e0e7c8 DH |
166 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
167 | struct afs_volsync *volsync) | |
1da177e4 | 168 | { |
08e0e7c8 | 169 | const __be32 *bp = *_bp; |
1da177e4 | 170 | |
08e0e7c8 DH |
171 | volsync->creation = ntohl(*bp++); |
172 | bp++; /* spare2 */ | |
173 | bp++; /* spare3 */ | |
174 | bp++; /* spare4 */ | |
175 | bp++; /* spare5 */ | |
176 | bp++; /* spare6 */ | |
177 | *_bp = bp; | |
178 | } | |
1da177e4 | 179 | |
31143d5d DH |
180 | /* |
181 | * encode the requested attributes into an AFSStoreStatus block | |
182 | */ | |
183 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
184 | { | |
185 | __be32 *bp = *_bp; | |
186 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
187 | ||
188 | mask = 0; | |
189 | if (attr->ia_valid & ATTR_MTIME) { | |
190 | mask |= AFS_SET_MTIME; | |
191 | mtime = attr->ia_mtime.tv_sec; | |
192 | } | |
193 | ||
194 | if (attr->ia_valid & ATTR_UID) { | |
195 | mask |= AFS_SET_OWNER; | |
a0a5386a | 196 | owner = from_kuid(&init_user_ns, attr->ia_uid); |
31143d5d DH |
197 | } |
198 | ||
199 | if (attr->ia_valid & ATTR_GID) { | |
200 | mask |= AFS_SET_GROUP; | |
a0a5386a | 201 | group = from_kgid(&init_user_ns, attr->ia_gid); |
31143d5d DH |
202 | } |
203 | ||
204 | if (attr->ia_valid & ATTR_MODE) { | |
205 | mask |= AFS_SET_MODE; | |
206 | mode = attr->ia_mode & S_IALLUGO; | |
207 | } | |
208 | ||
209 | *bp++ = htonl(mask); | |
210 | *bp++ = htonl(mtime); | |
211 | *bp++ = htonl(owner); | |
212 | *bp++ = htonl(group); | |
213 | *bp++ = htonl(mode); | |
214 | *bp++ = 0; /* segment size */ | |
215 | *_bp = bp; | |
216 | } | |
217 | ||
45222b9e DH |
218 | /* |
219 | * decode an AFSFetchVolumeStatus block | |
220 | */ | |
221 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, | |
222 | struct afs_volume_status *vs) | |
223 | { | |
224 | const __be32 *bp = *_bp; | |
225 | ||
226 | vs->vid = ntohl(*bp++); | |
227 | vs->parent_id = ntohl(*bp++); | |
228 | vs->online = ntohl(*bp++); | |
229 | vs->in_service = ntohl(*bp++); | |
230 | vs->blessed = ntohl(*bp++); | |
231 | vs->needs_salvage = ntohl(*bp++); | |
232 | vs->type = ntohl(*bp++); | |
233 | vs->min_quota = ntohl(*bp++); | |
234 | vs->max_quota = ntohl(*bp++); | |
235 | vs->blocks_in_use = ntohl(*bp++); | |
236 | vs->part_blocks_avail = ntohl(*bp++); | |
237 | vs->part_max_blocks = ntohl(*bp++); | |
238 | *_bp = bp; | |
239 | } | |
240 | ||
08e0e7c8 DH |
241 | /* |
242 | * deliver reply data to an FS.FetchStatus | |
243 | */ | |
d001648e | 244 | static int afs_deliver_fs_fetch_status(struct afs_call *call) |
08e0e7c8 | 245 | { |
260a9803 | 246 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 247 | const __be32 *bp; |
372ee163 | 248 | int ret; |
1da177e4 | 249 | |
d001648e | 250 | _enter(""); |
1da177e4 | 251 | |
d001648e | 252 | ret = afs_transfer_reply(call); |
372ee163 DH |
253 | if (ret < 0) |
254 | return ret; | |
1da177e4 | 255 | |
08e0e7c8 DH |
256 | /* unmarshall the reply once we've received all of it */ |
257 | bp = call->buffer; | |
31143d5d | 258 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 259 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
260 | if (call->reply2) |
261 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 262 | |
08e0e7c8 DH |
263 | _leave(" = 0 [done]"); |
264 | return 0; | |
ec26815a | 265 | } |
08e0e7c8 DH |
266 | |
267 | /* | |
268 | * FS.FetchStatus operation type | |
269 | */ | |
270 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 271 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
272 | .deliver = afs_deliver_fs_fetch_status, |
273 | .abort_to_error = afs_abort_to_error, | |
274 | .destructor = afs_flat_call_destructor, | |
275 | }; | |
1da177e4 | 276 | |
1da177e4 LT |
277 | /* |
278 | * fetch the status information for a file | |
279 | */ | |
08e0e7c8 | 280 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 281 | struct key *key, |
08e0e7c8 DH |
282 | struct afs_vnode *vnode, |
283 | struct afs_volsync *volsync, | |
56ff9c83 | 284 | bool async) |
1da177e4 | 285 | { |
08e0e7c8 | 286 | struct afs_call *call; |
1da177e4 LT |
287 | __be32 *bp; |
288 | ||
416351f2 | 289 | _enter(",%x,{%x:%u},,", |
260a9803 | 290 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 291 | |
260a9803 | 292 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
293 | if (!call) |
294 | return -ENOMEM; | |
1da177e4 | 295 | |
00d3b7a4 | 296 | call->key = key; |
08e0e7c8 DH |
297 | call->reply = vnode; |
298 | call->reply2 = volsync; | |
299 | call->service_id = FS_SERVICE; | |
300 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
301 | |
302 | /* marshall the parameters */ | |
08e0e7c8 | 303 | bp = call->request; |
1da177e4 LT |
304 | bp[0] = htonl(FSFETCHSTATUS); |
305 | bp[1] = htonl(vnode->fid.vid); | |
306 | bp[2] = htonl(vnode->fid.vnode); | |
307 | bp[3] = htonl(vnode->fid.unique); | |
308 | ||
56ff9c83 | 309 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
ec26815a | 310 | } |
1da177e4 | 311 | |
1da177e4 | 312 | /* |
08e0e7c8 | 313 | * deliver reply data to an FS.FetchData |
1da177e4 | 314 | */ |
d001648e | 315 | static int afs_deliver_fs_fetch_data(struct afs_call *call) |
1da177e4 | 316 | { |
260a9803 | 317 | struct afs_vnode *vnode = call->reply; |
196ee9cd | 318 | struct afs_read *req = call->reply3; |
08e0e7c8 | 319 | const __be32 *bp; |
196ee9cd | 320 | unsigned int size; |
08e0e7c8 | 321 | void *buffer; |
1da177e4 | 322 | int ret; |
1da177e4 | 323 | |
6a0e3999 | 324 | _enter("{%u,%zu/%u;%llu/%llu}", |
196ee9cd DH |
325 | call->unmarshall, call->offset, call->count, |
326 | req->remain, req->actual_len); | |
08e0e7c8 DH |
327 | |
328 | switch (call->unmarshall) { | |
329 | case 0: | |
196ee9cd | 330 | req->actual_len = 0; |
08e0e7c8 DH |
331 | call->offset = 0; |
332 | call->unmarshall++; | |
b9b1f8d5 DH |
333 | if (call->operation_ID != FSFETCHDATA64) { |
334 | call->unmarshall++; | |
335 | goto no_msw; | |
336 | } | |
08e0e7c8 | 337 | |
b9b1f8d5 DH |
338 | /* extract the upper part of the returned data length of an |
339 | * FSFETCHDATA64 op (which should always be 0 using this | |
340 | * client) */ | |
08e0e7c8 | 341 | case 1: |
b9b1f8d5 | 342 | _debug("extract data length (MSW)"); |
d001648e | 343 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
344 | if (ret < 0) |
345 | return ret; | |
b9b1f8d5 | 346 | |
196ee9cd DH |
347 | req->actual_len = ntohl(call->tmp); |
348 | req->actual_len <<= 32; | |
b9b1f8d5 DH |
349 | call->offset = 0; |
350 | call->unmarshall++; | |
351 | ||
352 | no_msw: | |
353 | /* extract the returned data length */ | |
354 | case 2: | |
08e0e7c8 | 355 | _debug("extract data length"); |
d001648e | 356 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
357 | if (ret < 0) |
358 | return ret; | |
1da177e4 | 359 | |
196ee9cd DH |
360 | req->actual_len |= ntohl(call->tmp); |
361 | _debug("DATA length: %llu", req->actual_len); | |
196ee9cd DH |
362 | |
363 | req->remain = req->actual_len; | |
364 | call->offset = req->pos & (PAGE_SIZE - 1); | |
365 | req->index = 0; | |
366 | if (req->actual_len == 0) | |
367 | goto no_more_data; | |
08e0e7c8 DH |
368 | call->unmarshall++; |
369 | ||
196ee9cd | 370 | begin_page: |
6db3ac3c | 371 | ASSERTCMP(req->index, <, req->nr_pages); |
196ee9cd DH |
372 | if (req->remain > PAGE_SIZE - call->offset) |
373 | size = PAGE_SIZE - call->offset; | |
374 | else | |
375 | size = req->remain; | |
376 | call->count = call->offset + size; | |
377 | ASSERTCMP(call->count, <=, PAGE_SIZE); | |
378 | req->remain -= size; | |
379 | ||
08e0e7c8 | 380 | /* extract the returned data */ |
b9b1f8d5 | 381 | case 3: |
6a0e3999 | 382 | _debug("extract data %llu/%llu %zu/%u", |
196ee9cd DH |
383 | req->remain, req->actual_len, call->offset, call->count); |
384 | ||
385 | buffer = kmap(req->pages[req->index]); | |
386 | ret = afs_extract_data(call, buffer, call->count, true); | |
387 | kunmap(req->pages[req->index]); | |
388 | if (ret < 0) | |
389 | return ret; | |
390 | if (call->offset == PAGE_SIZE) { | |
391 | if (req->page_done) | |
392 | req->page_done(call, req); | |
29f06985 | 393 | req->index++; |
196ee9cd | 394 | if (req->remain > 0) { |
196ee9cd | 395 | call->offset = 0; |
e8e581a8 DH |
396 | if (req->index >= req->nr_pages) { |
397 | call->unmarshall = 4; | |
6db3ac3c | 398 | goto begin_discard; |
e8e581a8 | 399 | } |
196ee9cd DH |
400 | goto begin_page; |
401 | } | |
08e0e7c8 | 402 | } |
6db3ac3c DH |
403 | goto no_more_data; |
404 | ||
405 | /* Discard any excess data the server gave us */ | |
406 | begin_discard: | |
407 | case 4: | |
6a0e3999 | 408 | size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain); |
6db3ac3c | 409 | call->count = size; |
6a0e3999 | 410 | _debug("extract discard %llu/%llu %zu/%u", |
6db3ac3c DH |
411 | req->remain, req->actual_len, call->offset, call->count); |
412 | ||
413 | call->offset = 0; | |
414 | ret = afs_extract_data(call, afs_discard_buffer, call->count, true); | |
415 | req->remain -= call->offset; | |
416 | if (ret < 0) | |
417 | return ret; | |
418 | if (req->remain > 0) | |
419 | goto begin_discard; | |
1da177e4 | 420 | |
196ee9cd | 421 | no_more_data: |
08e0e7c8 | 422 | call->offset = 0; |
6db3ac3c | 423 | call->unmarshall = 5; |
1da177e4 | 424 | |
08e0e7c8 | 425 | /* extract the metadata */ |
6db3ac3c | 426 | case 5: |
d001648e DH |
427 | ret = afs_extract_data(call, call->buffer, |
428 | (21 + 3 + 6) * 4, false); | |
372ee163 DH |
429 | if (ret < 0) |
430 | return ret; | |
08e0e7c8 DH |
431 | |
432 | bp = call->buffer; | |
31143d5d | 433 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 | 434 | xdr_decode_AFSCallBack(&bp, vnode); |
08e0e7c8 DH |
435 | if (call->reply2) |
436 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
437 | ||
438 | call->offset = 0; | |
439 | call->unmarshall++; | |
1da177e4 | 440 | |
6db3ac3c | 441 | case 6: |
08e0e7c8 | 442 | break; |
1da177e4 LT |
443 | } |
444 | ||
6db3ac3c DH |
445 | for (; req->index < req->nr_pages; req->index++) { |
446 | if (call->count < PAGE_SIZE) | |
447 | zero_user_segment(req->pages[req->index], | |
448 | call->count, PAGE_SIZE); | |
196ee9cd DH |
449 | if (req->page_done) |
450 | req->page_done(call, req); | |
6db3ac3c | 451 | call->count = 0; |
416351f2 DH |
452 | } |
453 | ||
08e0e7c8 DH |
454 | _leave(" = 0 [done]"); |
455 | return 0; | |
ec26815a | 456 | } |
1da177e4 | 457 | |
196ee9cd DH |
458 | static void afs_fetch_data_destructor(struct afs_call *call) |
459 | { | |
460 | struct afs_read *req = call->reply3; | |
461 | ||
462 | afs_put_read(req); | |
463 | afs_flat_call_destructor(call); | |
464 | } | |
465 | ||
1da177e4 | 466 | /* |
08e0e7c8 | 467 | * FS.FetchData operation type |
1da177e4 | 468 | */ |
08e0e7c8 | 469 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 470 | .name = "FS.FetchData", |
08e0e7c8 DH |
471 | .deliver = afs_deliver_fs_fetch_data, |
472 | .abort_to_error = afs_abort_to_error, | |
196ee9cd | 473 | .destructor = afs_fetch_data_destructor, |
08e0e7c8 DH |
474 | }; |
475 | ||
b9b1f8d5 DH |
476 | static const struct afs_call_type afs_RXFSFetchData64 = { |
477 | .name = "FS.FetchData64", | |
478 | .deliver = afs_deliver_fs_fetch_data, | |
479 | .abort_to_error = afs_abort_to_error, | |
196ee9cd | 480 | .destructor = afs_fetch_data_destructor, |
b9b1f8d5 DH |
481 | }; |
482 | ||
483 | /* | |
484 | * fetch data from a very large file | |
485 | */ | |
486 | static int afs_fs_fetch_data64(struct afs_server *server, | |
487 | struct key *key, | |
488 | struct afs_vnode *vnode, | |
196ee9cd | 489 | struct afs_read *req, |
56ff9c83 | 490 | bool async) |
b9b1f8d5 DH |
491 | { |
492 | struct afs_call *call; | |
493 | __be32 *bp; | |
494 | ||
495 | _enter(""); | |
496 | ||
b9b1f8d5 DH |
497 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
498 | if (!call) | |
499 | return -ENOMEM; | |
500 | ||
501 | call->key = key; | |
502 | call->reply = vnode; | |
503 | call->reply2 = NULL; /* volsync */ | |
196ee9cd | 504 | call->reply3 = req; |
b9b1f8d5 DH |
505 | call->service_id = FS_SERVICE; |
506 | call->port = htons(AFS_FS_PORT); | |
507 | call->operation_ID = FSFETCHDATA64; | |
508 | ||
509 | /* marshall the parameters */ | |
510 | bp = call->request; | |
511 | bp[0] = htonl(FSFETCHDATA64); | |
512 | bp[1] = htonl(vnode->fid.vid); | |
513 | bp[2] = htonl(vnode->fid.vnode); | |
514 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
515 | bp[4] = htonl(upper_32_bits(req->pos)); |
516 | bp[5] = htonl(lower_32_bits(req->pos)); | |
b9b1f8d5 | 517 | bp[6] = 0; |
196ee9cd | 518 | bp[7] = htonl(lower_32_bits(req->len)); |
b9b1f8d5 | 519 | |
196ee9cd | 520 | atomic_inc(&req->usage); |
56ff9c83 | 521 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
522 | } |
523 | ||
08e0e7c8 DH |
524 | /* |
525 | * fetch data from a file | |
526 | */ | |
527 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 528 | struct key *key, |
08e0e7c8 | 529 | struct afs_vnode *vnode, |
196ee9cd | 530 | struct afs_read *req, |
56ff9c83 | 531 | bool async) |
1da177e4 | 532 | { |
08e0e7c8 | 533 | struct afs_call *call; |
1da177e4 LT |
534 | __be32 *bp; |
535 | ||
196ee9cd DH |
536 | if (upper_32_bits(req->pos) || |
537 | upper_32_bits(req->len) || | |
538 | upper_32_bits(req->pos + req->len)) | |
56ff9c83 | 539 | return afs_fs_fetch_data64(server, key, vnode, req, async); |
b9b1f8d5 | 540 | |
08e0e7c8 | 541 | _enter(""); |
1da177e4 | 542 | |
260a9803 | 543 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
544 | if (!call) |
545 | return -ENOMEM; | |
1da177e4 | 546 | |
00d3b7a4 | 547 | call->key = key; |
08e0e7c8 | 548 | call->reply = vnode; |
260a9803 | 549 | call->reply2 = NULL; /* volsync */ |
196ee9cd | 550 | call->reply3 = req; |
08e0e7c8 DH |
551 | call->service_id = FS_SERVICE; |
552 | call->port = htons(AFS_FS_PORT); | |
b9b1f8d5 | 553 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
554 | |
555 | /* marshall the parameters */ | |
08e0e7c8 DH |
556 | bp = call->request; |
557 | bp[0] = htonl(FSFETCHDATA); | |
558 | bp[1] = htonl(vnode->fid.vid); | |
559 | bp[2] = htonl(vnode->fid.vnode); | |
560 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
561 | bp[4] = htonl(lower_32_bits(req->pos)); |
562 | bp[5] = htonl(lower_32_bits(req->len)); | |
1da177e4 | 563 | |
196ee9cd | 564 | atomic_inc(&req->usage); |
56ff9c83 | 565 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
08e0e7c8 | 566 | } |
1da177e4 | 567 | |
08e0e7c8 DH |
568 | /* |
569 | * deliver reply data to an FS.GiveUpCallBacks | |
570 | */ | |
d001648e | 571 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call) |
08e0e7c8 | 572 | { |
d001648e | 573 | _enter(""); |
1da177e4 | 574 | |
372ee163 | 575 | /* shouldn't be any reply data */ |
d001648e | 576 | return afs_extract_data(call, NULL, 0, false); |
ec26815a | 577 | } |
1da177e4 | 578 | |
1da177e4 | 579 | /* |
08e0e7c8 DH |
580 | * FS.GiveUpCallBacks operation type |
581 | */ | |
582 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 583 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
584 | .deliver = afs_deliver_fs_give_up_callbacks, |
585 | .abort_to_error = afs_abort_to_error, | |
586 | .destructor = afs_flat_call_destructor, | |
587 | }; | |
588 | ||
589 | /* | |
590 | * give up a set of callbacks | |
591 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 592 | */ |
08e0e7c8 | 593 | int afs_fs_give_up_callbacks(struct afs_server *server, |
56ff9c83 | 594 | bool async) |
1da177e4 | 595 | { |
08e0e7c8 DH |
596 | struct afs_call *call; |
597 | size_t ncallbacks; | |
598 | __be32 *bp, *tp; | |
599 | int loop; | |
1da177e4 | 600 | |
08e0e7c8 DH |
601 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
602 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 603 | |
08e0e7c8 | 604 | _enter("{%zu},", ncallbacks); |
1da177e4 | 605 | |
08e0e7c8 DH |
606 | if (ncallbacks == 0) |
607 | return 0; | |
608 | if (ncallbacks > AFSCBMAX) | |
609 | ncallbacks = AFSCBMAX; | |
1da177e4 | 610 | |
08e0e7c8 | 611 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 612 | |
08e0e7c8 DH |
613 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
614 | 12 + ncallbacks * 6 * 4, 0); | |
615 | if (!call) | |
616 | return -ENOMEM; | |
617 | ||
618 | call->service_id = FS_SERVICE; | |
619 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
620 | |
621 | /* marshall the parameters */ | |
08e0e7c8 DH |
622 | bp = call->request; |
623 | tp = bp + 2 + ncallbacks * 3; | |
624 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
625 | *bp++ = htonl(ncallbacks); | |
626 | *tp++ = htonl(ncallbacks); | |
627 | ||
628 | atomic_sub(ncallbacks, &server->cb_break_n); | |
629 | for (loop = ncallbacks; loop > 0; loop--) { | |
630 | struct afs_callback *cb = | |
631 | &server->cb_break[server->cb_break_tail]; | |
632 | ||
633 | *bp++ = htonl(cb->fid.vid); | |
634 | *bp++ = htonl(cb->fid.vnode); | |
635 | *bp++ = htonl(cb->fid.unique); | |
636 | *tp++ = htonl(cb->version); | |
637 | *tp++ = htonl(cb->expiry); | |
638 | *tp++ = htonl(cb->type); | |
639 | smp_mb(); | |
640 | server->cb_break_tail = | |
641 | (server->cb_break_tail + 1) & | |
642 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
643 | } |
644 | ||
08e0e7c8 DH |
645 | ASSERT(ncallbacks > 0); |
646 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 647 | |
56ff9c83 | 648 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
ec26815a | 649 | } |
260a9803 DH |
650 | |
651 | /* | |
652 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
653 | */ | |
d001648e | 654 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
260a9803 DH |
655 | { |
656 | struct afs_vnode *vnode = call->reply; | |
657 | const __be32 *bp; | |
372ee163 | 658 | int ret; |
260a9803 | 659 | |
d001648e | 660 | _enter("{%u}", call->unmarshall); |
260a9803 | 661 | |
d001648e | 662 | ret = afs_transfer_reply(call); |
372ee163 DH |
663 | if (ret < 0) |
664 | return ret; | |
260a9803 DH |
665 | |
666 | /* unmarshall the reply once we've received all of it */ | |
667 | bp = call->buffer; | |
668 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
669 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
670 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
671 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
672 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
673 | ||
674 | _leave(" = 0 [done]"); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | /* | |
679 | * FS.CreateFile and FS.MakeDir operation type | |
680 | */ | |
681 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
682 | .name = "FS.CreateXXXX", | |
683 | .deliver = afs_deliver_fs_create_vnode, | |
684 | .abort_to_error = afs_abort_to_error, | |
685 | .destructor = afs_flat_call_destructor, | |
686 | }; | |
687 | ||
688 | /* | |
689 | * create a file or make a directory | |
690 | */ | |
691 | int afs_fs_create(struct afs_server *server, | |
692 | struct key *key, | |
693 | struct afs_vnode *vnode, | |
694 | const char *name, | |
695 | umode_t mode, | |
696 | struct afs_fid *newfid, | |
697 | struct afs_file_status *newstatus, | |
698 | struct afs_callback *newcb, | |
56ff9c83 | 699 | bool async) |
260a9803 DH |
700 | { |
701 | struct afs_call *call; | |
702 | size_t namesz, reqsz, padsz; | |
703 | __be32 *bp; | |
704 | ||
705 | _enter(""); | |
706 | ||
707 | namesz = strlen(name); | |
708 | padsz = (4 - (namesz & 3)) & 3; | |
709 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
710 | ||
711 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
712 | (3 + 21 + 21 + 3 + 6) * 4); | |
713 | if (!call) | |
714 | return -ENOMEM; | |
715 | ||
716 | call->key = key; | |
717 | call->reply = vnode; | |
718 | call->reply2 = newfid; | |
719 | call->reply3 = newstatus; | |
720 | call->reply4 = newcb; | |
721 | call->service_id = FS_SERVICE; | |
722 | call->port = htons(AFS_FS_PORT); | |
723 | ||
724 | /* marshall the parameters */ | |
725 | bp = call->request; | |
726 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
727 | *bp++ = htonl(vnode->fid.vid); | |
728 | *bp++ = htonl(vnode->fid.vnode); | |
729 | *bp++ = htonl(vnode->fid.unique); | |
730 | *bp++ = htonl(namesz); | |
731 | memcpy(bp, name, namesz); | |
732 | bp = (void *) bp + namesz; | |
733 | if (padsz > 0) { | |
734 | memset(bp, 0, padsz); | |
735 | bp = (void *) bp + padsz; | |
736 | } | |
ab94f5d0 MD |
737 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
738 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
260a9803 DH |
739 | *bp++ = 0; /* owner */ |
740 | *bp++ = 0; /* group */ | |
741 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
742 | *bp++ = 0; /* segment size */ | |
743 | ||
56ff9c83 | 744 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
745 | } |
746 | ||
747 | /* | |
748 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
749 | */ | |
d001648e | 750 | static int afs_deliver_fs_remove(struct afs_call *call) |
260a9803 DH |
751 | { |
752 | struct afs_vnode *vnode = call->reply; | |
753 | const __be32 *bp; | |
372ee163 | 754 | int ret; |
260a9803 | 755 | |
d001648e | 756 | _enter("{%u}", call->unmarshall); |
260a9803 | 757 | |
d001648e | 758 | ret = afs_transfer_reply(call); |
372ee163 DH |
759 | if (ret < 0) |
760 | return ret; | |
260a9803 DH |
761 | |
762 | /* unmarshall the reply once we've received all of it */ | |
763 | bp = call->buffer; | |
31143d5d | 764 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
260a9803 DH |
765 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
766 | ||
767 | _leave(" = 0 [done]"); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | /* | |
772 | * FS.RemoveDir/FS.RemoveFile operation type | |
773 | */ | |
774 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
775 | .name = "FS.RemoveXXXX", | |
776 | .deliver = afs_deliver_fs_remove, | |
777 | .abort_to_error = afs_abort_to_error, | |
778 | .destructor = afs_flat_call_destructor, | |
779 | }; | |
780 | ||
781 | /* | |
782 | * remove a file or directory | |
783 | */ | |
784 | int afs_fs_remove(struct afs_server *server, | |
785 | struct key *key, | |
786 | struct afs_vnode *vnode, | |
787 | const char *name, | |
788 | bool isdir, | |
56ff9c83 | 789 | bool async) |
260a9803 DH |
790 | { |
791 | struct afs_call *call; | |
792 | size_t namesz, reqsz, padsz; | |
793 | __be32 *bp; | |
794 | ||
795 | _enter(""); | |
796 | ||
797 | namesz = strlen(name); | |
798 | padsz = (4 - (namesz & 3)) & 3; | |
799 | reqsz = (5 * 4) + namesz + padsz; | |
800 | ||
801 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
802 | if (!call) | |
803 | return -ENOMEM; | |
804 | ||
805 | call->key = key; | |
806 | call->reply = vnode; | |
807 | call->service_id = FS_SERVICE; | |
808 | call->port = htons(AFS_FS_PORT); | |
809 | ||
810 | /* marshall the parameters */ | |
811 | bp = call->request; | |
812 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
813 | *bp++ = htonl(vnode->fid.vid); | |
814 | *bp++ = htonl(vnode->fid.vnode); | |
815 | *bp++ = htonl(vnode->fid.unique); | |
816 | *bp++ = htonl(namesz); | |
817 | memcpy(bp, name, namesz); | |
818 | bp = (void *) bp + namesz; | |
819 | if (padsz > 0) { | |
820 | memset(bp, 0, padsz); | |
821 | bp = (void *) bp + padsz; | |
822 | } | |
823 | ||
56ff9c83 | 824 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
825 | } |
826 | ||
827 | /* | |
828 | * deliver reply data to an FS.Link | |
829 | */ | |
d001648e | 830 | static int afs_deliver_fs_link(struct afs_call *call) |
260a9803 DH |
831 | { |
832 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
833 | const __be32 *bp; | |
372ee163 | 834 | int ret; |
260a9803 | 835 | |
d001648e | 836 | _enter("{%u}", call->unmarshall); |
260a9803 | 837 | |
d001648e | 838 | ret = afs_transfer_reply(call); |
372ee163 DH |
839 | if (ret < 0) |
840 | return ret; | |
260a9803 DH |
841 | |
842 | /* unmarshall the reply once we've received all of it */ | |
843 | bp = call->buffer; | |
31143d5d DH |
844 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
845 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
260a9803 DH |
846 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
847 | ||
848 | _leave(" = 0 [done]"); | |
849 | return 0; | |
850 | } | |
851 | ||
852 | /* | |
853 | * FS.Link operation type | |
854 | */ | |
855 | static const struct afs_call_type afs_RXFSLink = { | |
856 | .name = "FS.Link", | |
857 | .deliver = afs_deliver_fs_link, | |
858 | .abort_to_error = afs_abort_to_error, | |
859 | .destructor = afs_flat_call_destructor, | |
860 | }; | |
861 | ||
862 | /* | |
863 | * make a hard link | |
864 | */ | |
865 | int afs_fs_link(struct afs_server *server, | |
866 | struct key *key, | |
867 | struct afs_vnode *dvnode, | |
868 | struct afs_vnode *vnode, | |
869 | const char *name, | |
56ff9c83 | 870 | bool async) |
260a9803 DH |
871 | { |
872 | struct afs_call *call; | |
873 | size_t namesz, reqsz, padsz; | |
874 | __be32 *bp; | |
875 | ||
876 | _enter(""); | |
877 | ||
878 | namesz = strlen(name); | |
879 | padsz = (4 - (namesz & 3)) & 3; | |
880 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
881 | ||
882 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
883 | if (!call) | |
884 | return -ENOMEM; | |
885 | ||
886 | call->key = key; | |
887 | call->reply = dvnode; | |
888 | call->reply2 = vnode; | |
889 | call->service_id = FS_SERVICE; | |
890 | call->port = htons(AFS_FS_PORT); | |
891 | ||
892 | /* marshall the parameters */ | |
893 | bp = call->request; | |
894 | *bp++ = htonl(FSLINK); | |
895 | *bp++ = htonl(dvnode->fid.vid); | |
896 | *bp++ = htonl(dvnode->fid.vnode); | |
897 | *bp++ = htonl(dvnode->fid.unique); | |
898 | *bp++ = htonl(namesz); | |
899 | memcpy(bp, name, namesz); | |
900 | bp = (void *) bp + namesz; | |
901 | if (padsz > 0) { | |
902 | memset(bp, 0, padsz); | |
903 | bp = (void *) bp + padsz; | |
904 | } | |
905 | *bp++ = htonl(vnode->fid.vid); | |
906 | *bp++ = htonl(vnode->fid.vnode); | |
907 | *bp++ = htonl(vnode->fid.unique); | |
908 | ||
56ff9c83 | 909 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
910 | } |
911 | ||
912 | /* | |
913 | * deliver reply data to an FS.Symlink | |
914 | */ | |
d001648e | 915 | static int afs_deliver_fs_symlink(struct afs_call *call) |
260a9803 DH |
916 | { |
917 | struct afs_vnode *vnode = call->reply; | |
918 | const __be32 *bp; | |
372ee163 | 919 | int ret; |
260a9803 | 920 | |
d001648e | 921 | _enter("{%u}", call->unmarshall); |
260a9803 | 922 | |
d001648e | 923 | ret = afs_transfer_reply(call); |
372ee163 DH |
924 | if (ret < 0) |
925 | return ret; | |
260a9803 DH |
926 | |
927 | /* unmarshall the reply once we've received all of it */ | |
928 | bp = call->buffer; | |
929 | xdr_decode_AFSFid(&bp, call->reply2); | |
31143d5d DH |
930 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
931 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); | |
260a9803 DH |
932 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
933 | ||
934 | _leave(" = 0 [done]"); | |
935 | return 0; | |
936 | } | |
937 | ||
938 | /* | |
939 | * FS.Symlink operation type | |
940 | */ | |
941 | static const struct afs_call_type afs_RXFSSymlink = { | |
942 | .name = "FS.Symlink", | |
943 | .deliver = afs_deliver_fs_symlink, | |
944 | .abort_to_error = afs_abort_to_error, | |
945 | .destructor = afs_flat_call_destructor, | |
946 | }; | |
947 | ||
948 | /* | |
949 | * create a symbolic link | |
950 | */ | |
951 | int afs_fs_symlink(struct afs_server *server, | |
952 | struct key *key, | |
953 | struct afs_vnode *vnode, | |
954 | const char *name, | |
955 | const char *contents, | |
956 | struct afs_fid *newfid, | |
957 | struct afs_file_status *newstatus, | |
56ff9c83 | 958 | bool async) |
260a9803 DH |
959 | { |
960 | struct afs_call *call; | |
961 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
962 | __be32 *bp; | |
963 | ||
964 | _enter(""); | |
965 | ||
966 | namesz = strlen(name); | |
967 | padsz = (4 - (namesz & 3)) & 3; | |
968 | ||
969 | c_namesz = strlen(contents); | |
970 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
971 | ||
972 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
973 | ||
974 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
975 | (3 + 21 + 21 + 6) * 4); | |
976 | if (!call) | |
977 | return -ENOMEM; | |
978 | ||
979 | call->key = key; | |
980 | call->reply = vnode; | |
981 | call->reply2 = newfid; | |
982 | call->reply3 = newstatus; | |
983 | call->service_id = FS_SERVICE; | |
984 | call->port = htons(AFS_FS_PORT); | |
985 | ||
986 | /* marshall the parameters */ | |
987 | bp = call->request; | |
988 | *bp++ = htonl(FSSYMLINK); | |
989 | *bp++ = htonl(vnode->fid.vid); | |
990 | *bp++ = htonl(vnode->fid.vnode); | |
991 | *bp++ = htonl(vnode->fid.unique); | |
992 | *bp++ = htonl(namesz); | |
993 | memcpy(bp, name, namesz); | |
994 | bp = (void *) bp + namesz; | |
995 | if (padsz > 0) { | |
996 | memset(bp, 0, padsz); | |
997 | bp = (void *) bp + padsz; | |
998 | } | |
999 | *bp++ = htonl(c_namesz); | |
1000 | memcpy(bp, contents, c_namesz); | |
1001 | bp = (void *) bp + c_namesz; | |
1002 | if (c_padsz > 0) { | |
1003 | memset(bp, 0, c_padsz); | |
1004 | bp = (void *) bp + c_padsz; | |
1005 | } | |
ab94f5d0 MD |
1006 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
1007 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
260a9803 DH |
1008 | *bp++ = 0; /* owner */ |
1009 | *bp++ = 0; /* group */ | |
1010 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
1011 | *bp++ = 0; /* segment size */ | |
1012 | ||
56ff9c83 | 1013 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 DH |
1014 | } |
1015 | ||
1016 | /* | |
1017 | * deliver reply data to an FS.Rename | |
1018 | */ | |
d001648e | 1019 | static int afs_deliver_fs_rename(struct afs_call *call) |
260a9803 DH |
1020 | { |
1021 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
1022 | const __be32 *bp; | |
372ee163 | 1023 | int ret; |
260a9803 | 1024 | |
d001648e | 1025 | _enter("{%u}", call->unmarshall); |
260a9803 | 1026 | |
d001648e | 1027 | ret = afs_transfer_reply(call); |
372ee163 DH |
1028 | if (ret < 0) |
1029 | return ret; | |
260a9803 DH |
1030 | |
1031 | /* unmarshall the reply once we've received all of it */ | |
1032 | bp = call->buffer; | |
31143d5d | 1033 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 1034 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
1035 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
1036 | NULL); | |
260a9803 DH |
1037 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
1038 | ||
1039 | _leave(" = 0 [done]"); | |
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | * FS.Rename operation type | |
1045 | */ | |
1046 | static const struct afs_call_type afs_RXFSRename = { | |
1047 | .name = "FS.Rename", | |
1048 | .deliver = afs_deliver_fs_rename, | |
1049 | .abort_to_error = afs_abort_to_error, | |
1050 | .destructor = afs_flat_call_destructor, | |
1051 | }; | |
1052 | ||
1053 | /* | |
1054 | * create a symbolic link | |
1055 | */ | |
1056 | int afs_fs_rename(struct afs_server *server, | |
1057 | struct key *key, | |
1058 | struct afs_vnode *orig_dvnode, | |
1059 | const char *orig_name, | |
1060 | struct afs_vnode *new_dvnode, | |
1061 | const char *new_name, | |
56ff9c83 | 1062 | bool async) |
260a9803 DH |
1063 | { |
1064 | struct afs_call *call; | |
1065 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
1066 | __be32 *bp; | |
1067 | ||
1068 | _enter(""); | |
1069 | ||
1070 | o_namesz = strlen(orig_name); | |
1071 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
1072 | ||
1073 | n_namesz = strlen(new_name); | |
1074 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
1075 | ||
1076 | reqsz = (4 * 4) + | |
1077 | 4 + o_namesz + o_padsz + | |
1078 | (3 * 4) + | |
1079 | 4 + n_namesz + n_padsz; | |
1080 | ||
1081 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
1082 | if (!call) | |
1083 | return -ENOMEM; | |
1084 | ||
1085 | call->key = key; | |
1086 | call->reply = orig_dvnode; | |
1087 | call->reply2 = new_dvnode; | |
1088 | call->service_id = FS_SERVICE; | |
1089 | call->port = htons(AFS_FS_PORT); | |
1090 | ||
1091 | /* marshall the parameters */ | |
1092 | bp = call->request; | |
1093 | *bp++ = htonl(FSRENAME); | |
1094 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1095 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1096 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1097 | *bp++ = htonl(o_namesz); | |
1098 | memcpy(bp, orig_name, o_namesz); | |
1099 | bp = (void *) bp + o_namesz; | |
1100 | if (o_padsz > 0) { | |
1101 | memset(bp, 0, o_padsz); | |
1102 | bp = (void *) bp + o_padsz; | |
1103 | } | |
1104 | ||
1105 | *bp++ = htonl(new_dvnode->fid.vid); | |
1106 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1107 | *bp++ = htonl(new_dvnode->fid.unique); | |
1108 | *bp++ = htonl(n_namesz); | |
1109 | memcpy(bp, new_name, n_namesz); | |
1110 | bp = (void *) bp + n_namesz; | |
1111 | if (n_padsz > 0) { | |
1112 | memset(bp, 0, n_padsz); | |
1113 | bp = (void *) bp + n_padsz; | |
1114 | } | |
1115 | ||
56ff9c83 | 1116 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
260a9803 | 1117 | } |
31143d5d DH |
1118 | |
1119 | /* | |
1120 | * deliver reply data to an FS.StoreData | |
1121 | */ | |
d001648e | 1122 | static int afs_deliver_fs_store_data(struct afs_call *call) |
31143d5d DH |
1123 | { |
1124 | struct afs_vnode *vnode = call->reply; | |
1125 | const __be32 *bp; | |
372ee163 | 1126 | int ret; |
31143d5d | 1127 | |
d001648e | 1128 | _enter(""); |
31143d5d | 1129 | |
d001648e | 1130 | ret = afs_transfer_reply(call); |
372ee163 DH |
1131 | if (ret < 0) |
1132 | return ret; | |
31143d5d DH |
1133 | |
1134 | /* unmarshall the reply once we've received all of it */ | |
1135 | bp = call->buffer; | |
1136 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1137 | &call->store_version); | |
1138 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1139 | ||
1140 | afs_pages_written_back(vnode, call); | |
1141 | ||
1142 | _leave(" = 0 [done]"); | |
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * FS.StoreData operation type | |
1148 | */ | |
1149 | static const struct afs_call_type afs_RXFSStoreData = { | |
1150 | .name = "FS.StoreData", | |
1151 | .deliver = afs_deliver_fs_store_data, | |
1152 | .abort_to_error = afs_abort_to_error, | |
1153 | .destructor = afs_flat_call_destructor, | |
1154 | }; | |
1155 | ||
b9b1f8d5 DH |
1156 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1157 | .name = "FS.StoreData64", | |
1158 | .deliver = afs_deliver_fs_store_data, | |
1159 | .abort_to_error = afs_abort_to_error, | |
1160 | .destructor = afs_flat_call_destructor, | |
1161 | }; | |
1162 | ||
1163 | /* | |
1164 | * store a set of pages to a very large file | |
1165 | */ | |
1166 | static int afs_fs_store_data64(struct afs_server *server, | |
1167 | struct afs_writeback *wb, | |
1168 | pgoff_t first, pgoff_t last, | |
1169 | unsigned offset, unsigned to, | |
1170 | loff_t size, loff_t pos, loff_t i_size, | |
56ff9c83 | 1171 | bool async) |
b9b1f8d5 DH |
1172 | { |
1173 | struct afs_vnode *vnode = wb->vnode; | |
1174 | struct afs_call *call; | |
1175 | __be32 *bp; | |
1176 | ||
1177 | _enter(",%x,{%x:%u},,", | |
1178 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1179 | ||
1180 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, | |
1181 | (4 + 6 + 3 * 2) * 4, | |
1182 | (21 + 6) * 4); | |
1183 | if (!call) | |
1184 | return -ENOMEM; | |
1185 | ||
1186 | call->wb = wb; | |
1187 | call->key = wb->key; | |
1188 | call->reply = vnode; | |
1189 | call->service_id = FS_SERVICE; | |
1190 | call->port = htons(AFS_FS_PORT); | |
1191 | call->mapping = vnode->vfs_inode.i_mapping; | |
1192 | call->first = first; | |
1193 | call->last = last; | |
1194 | call->first_offset = offset; | |
1195 | call->last_to = to; | |
1196 | call->send_pages = true; | |
1197 | call->store_version = vnode->status.data_version + 1; | |
1198 | ||
1199 | /* marshall the parameters */ | |
1200 | bp = call->request; | |
1201 | *bp++ = htonl(FSSTOREDATA64); | |
1202 | *bp++ = htonl(vnode->fid.vid); | |
1203 | *bp++ = htonl(vnode->fid.vnode); | |
1204 | *bp++ = htonl(vnode->fid.unique); | |
1205 | ||
ab94f5d0 MD |
1206 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1207 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
b9b1f8d5 DH |
1208 | *bp++ = 0; /* owner */ |
1209 | *bp++ = 0; /* group */ | |
1210 | *bp++ = 0; /* unix mode */ | |
1211 | *bp++ = 0; /* segment size */ | |
1212 | ||
1213 | *bp++ = htonl(pos >> 32); | |
1214 | *bp++ = htonl((u32) pos); | |
1215 | *bp++ = htonl(size >> 32); | |
1216 | *bp++ = htonl((u32) size); | |
1217 | *bp++ = htonl(i_size >> 32); | |
1218 | *bp++ = htonl((u32) i_size); | |
1219 | ||
56ff9c83 | 1220 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
1221 | } |
1222 | ||
31143d5d DH |
1223 | /* |
1224 | * store a set of pages | |
1225 | */ | |
1226 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, | |
1227 | pgoff_t first, pgoff_t last, | |
1228 | unsigned offset, unsigned to, | |
56ff9c83 | 1229 | bool async) |
31143d5d DH |
1230 | { |
1231 | struct afs_vnode *vnode = wb->vnode; | |
1232 | struct afs_call *call; | |
1233 | loff_t size, pos, i_size; | |
1234 | __be32 *bp; | |
1235 | ||
1236 | _enter(",%x,{%x:%u},,", | |
1237 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1238 | ||
146a1192 | 1239 | size = (loff_t)to - (loff_t)offset; |
31143d5d DH |
1240 | if (first != last) |
1241 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1242 | pos = (loff_t)first << PAGE_SHIFT; | |
1243 | pos += offset; | |
1244 | ||
1245 | i_size = i_size_read(&vnode->vfs_inode); | |
1246 | if (pos + size > i_size) | |
1247 | i_size = size + pos; | |
1248 | ||
1249 | _debug("size %llx, at %llx, i_size %llx", | |
1250 | (unsigned long long) size, (unsigned long long) pos, | |
1251 | (unsigned long long) i_size); | |
1252 | ||
b9b1f8d5 DH |
1253 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
1254 | return afs_fs_store_data64(server, wb, first, last, offset, to, | |
56ff9c83 | 1255 | size, pos, i_size, async); |
31143d5d DH |
1256 | |
1257 | call = afs_alloc_flat_call(&afs_RXFSStoreData, | |
1258 | (4 + 6 + 3) * 4, | |
1259 | (21 + 6) * 4); | |
1260 | if (!call) | |
1261 | return -ENOMEM; | |
1262 | ||
1263 | call->wb = wb; | |
1264 | call->key = wb->key; | |
1265 | call->reply = vnode; | |
1266 | call->service_id = FS_SERVICE; | |
1267 | call->port = htons(AFS_FS_PORT); | |
1268 | call->mapping = vnode->vfs_inode.i_mapping; | |
1269 | call->first = first; | |
1270 | call->last = last; | |
1271 | call->first_offset = offset; | |
1272 | call->last_to = to; | |
1273 | call->send_pages = true; | |
1274 | call->store_version = vnode->status.data_version + 1; | |
1275 | ||
1276 | /* marshall the parameters */ | |
1277 | bp = call->request; | |
1278 | *bp++ = htonl(FSSTOREDATA); | |
1279 | *bp++ = htonl(vnode->fid.vid); | |
1280 | *bp++ = htonl(vnode->fid.vnode); | |
1281 | *bp++ = htonl(vnode->fid.unique); | |
1282 | ||
ab94f5d0 MD |
1283 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1284 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
31143d5d DH |
1285 | *bp++ = 0; /* owner */ |
1286 | *bp++ = 0; /* group */ | |
1287 | *bp++ = 0; /* unix mode */ | |
1288 | *bp++ = 0; /* segment size */ | |
1289 | ||
1290 | *bp++ = htonl(pos); | |
1291 | *bp++ = htonl(size); | |
1292 | *bp++ = htonl(i_size); | |
1293 | ||
56ff9c83 | 1294 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d DH |
1295 | } |
1296 | ||
1297 | /* | |
1298 | * deliver reply data to an FS.StoreStatus | |
1299 | */ | |
d001648e | 1300 | static int afs_deliver_fs_store_status(struct afs_call *call) |
31143d5d DH |
1301 | { |
1302 | afs_dataversion_t *store_version; | |
1303 | struct afs_vnode *vnode = call->reply; | |
1304 | const __be32 *bp; | |
372ee163 | 1305 | int ret; |
31143d5d | 1306 | |
d001648e | 1307 | _enter(""); |
31143d5d | 1308 | |
d001648e | 1309 | ret = afs_transfer_reply(call); |
372ee163 DH |
1310 | if (ret < 0) |
1311 | return ret; | |
31143d5d DH |
1312 | |
1313 | /* unmarshall the reply once we've received all of it */ | |
1314 | store_version = NULL; | |
1315 | if (call->operation_ID == FSSTOREDATA) | |
1316 | store_version = &call->store_version; | |
1317 | ||
1318 | bp = call->buffer; | |
1319 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
1320 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1321 | ||
1322 | _leave(" = 0 [done]"); | |
1323 | return 0; | |
1324 | } | |
1325 | ||
1326 | /* | |
1327 | * FS.StoreStatus operation type | |
1328 | */ | |
1329 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1330 | .name = "FS.StoreStatus", | |
1331 | .deliver = afs_deliver_fs_store_status, | |
1332 | .abort_to_error = afs_abort_to_error, | |
1333 | .destructor = afs_flat_call_destructor, | |
1334 | }; | |
1335 | ||
1336 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1337 | .name = "FS.StoreData", | |
1338 | .deliver = afs_deliver_fs_store_status, | |
1339 | .abort_to_error = afs_abort_to_error, | |
1340 | .destructor = afs_flat_call_destructor, | |
1341 | }; | |
1342 | ||
b9b1f8d5 DH |
1343 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1344 | .name = "FS.StoreData64", | |
1345 | .deliver = afs_deliver_fs_store_status, | |
1346 | .abort_to_error = afs_abort_to_error, | |
1347 | .destructor = afs_flat_call_destructor, | |
1348 | }; | |
1349 | ||
1350 | /* | |
1351 | * set the attributes on a very large file, using FS.StoreData rather than | |
1352 | * FS.StoreStatus so as to alter the file size also | |
1353 | */ | |
1354 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, | |
1355 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1356 | bool async) |
b9b1f8d5 DH |
1357 | { |
1358 | struct afs_call *call; | |
1359 | __be32 *bp; | |
1360 | ||
1361 | _enter(",%x,{%x:%u},,", | |
1362 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1363 | ||
1364 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1365 | ||
1366 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, | |
1367 | (4 + 6 + 3 * 2) * 4, | |
1368 | (21 + 6) * 4); | |
1369 | if (!call) | |
1370 | return -ENOMEM; | |
1371 | ||
1372 | call->key = key; | |
1373 | call->reply = vnode; | |
1374 | call->service_id = FS_SERVICE; | |
1375 | call->port = htons(AFS_FS_PORT); | |
1376 | call->store_version = vnode->status.data_version + 1; | |
1377 | call->operation_ID = FSSTOREDATA; | |
1378 | ||
1379 | /* marshall the parameters */ | |
1380 | bp = call->request; | |
1381 | *bp++ = htonl(FSSTOREDATA64); | |
1382 | *bp++ = htonl(vnode->fid.vid); | |
1383 | *bp++ = htonl(vnode->fid.vnode); | |
1384 | *bp++ = htonl(vnode->fid.unique); | |
1385 | ||
1386 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1387 | ||
1388 | *bp++ = 0; /* position of start of write */ | |
1389 | *bp++ = 0; | |
1390 | *bp++ = 0; /* size of write */ | |
1391 | *bp++ = 0; | |
1392 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1393 | *bp++ = htonl((u32) attr->ia_size); | |
1394 | ||
56ff9c83 | 1395 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
b9b1f8d5 DH |
1396 | } |
1397 | ||
31143d5d DH |
1398 | /* |
1399 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1400 | * so as to alter the file size also | |
1401 | */ | |
1402 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, | |
1403 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1404 | bool async) |
31143d5d DH |
1405 | { |
1406 | struct afs_call *call; | |
1407 | __be32 *bp; | |
1408 | ||
1409 | _enter(",%x,{%x:%u},,", | |
1410 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1411 | ||
1412 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 DH |
1413 | if (attr->ia_size >> 32) |
1414 | return afs_fs_setattr_size64(server, key, vnode, attr, | |
56ff9c83 | 1415 | async); |
31143d5d DH |
1416 | |
1417 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, | |
1418 | (4 + 6 + 3) * 4, | |
1419 | (21 + 6) * 4); | |
1420 | if (!call) | |
1421 | return -ENOMEM; | |
1422 | ||
1423 | call->key = key; | |
1424 | call->reply = vnode; | |
1425 | call->service_id = FS_SERVICE; | |
1426 | call->port = htons(AFS_FS_PORT); | |
1427 | call->store_version = vnode->status.data_version + 1; | |
1428 | call->operation_ID = FSSTOREDATA; | |
1429 | ||
1430 | /* marshall the parameters */ | |
1431 | bp = call->request; | |
1432 | *bp++ = htonl(FSSTOREDATA); | |
1433 | *bp++ = htonl(vnode->fid.vid); | |
1434 | *bp++ = htonl(vnode->fid.vnode); | |
1435 | *bp++ = htonl(vnode->fid.unique); | |
1436 | ||
1437 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1438 | ||
1439 | *bp++ = 0; /* position of start of write */ | |
1440 | *bp++ = 0; /* size of write */ | |
1441 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1442 | ||
56ff9c83 | 1443 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d DH |
1444 | } |
1445 | ||
1446 | /* | |
1447 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1448 | * size, and FS.StoreStatus otherwise | |
1449 | */ | |
1450 | int afs_fs_setattr(struct afs_server *server, struct key *key, | |
1451 | struct afs_vnode *vnode, struct iattr *attr, | |
56ff9c83 | 1452 | bool async) |
31143d5d DH |
1453 | { |
1454 | struct afs_call *call; | |
1455 | __be32 *bp; | |
1456 | ||
1457 | if (attr->ia_valid & ATTR_SIZE) | |
1458 | return afs_fs_setattr_size(server, key, vnode, attr, | |
56ff9c83 | 1459 | async); |
31143d5d DH |
1460 | |
1461 | _enter(",%x,{%x:%u},,", | |
1462 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); | |
1463 | ||
1464 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, | |
1465 | (4 + 6) * 4, | |
1466 | (21 + 6) * 4); | |
1467 | if (!call) | |
1468 | return -ENOMEM; | |
1469 | ||
1470 | call->key = key; | |
1471 | call->reply = vnode; | |
1472 | call->service_id = FS_SERVICE; | |
1473 | call->port = htons(AFS_FS_PORT); | |
1474 | call->operation_ID = FSSTORESTATUS; | |
1475 | ||
1476 | /* marshall the parameters */ | |
1477 | bp = call->request; | |
1478 | *bp++ = htonl(FSSTORESTATUS); | |
1479 | *bp++ = htonl(vnode->fid.vid); | |
1480 | *bp++ = htonl(vnode->fid.vnode); | |
1481 | *bp++ = htonl(vnode->fid.unique); | |
1482 | ||
1483 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1484 | ||
56ff9c83 | 1485 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
31143d5d | 1486 | } |
45222b9e DH |
1487 | |
1488 | /* | |
1489 | * deliver reply data to an FS.GetVolumeStatus | |
1490 | */ | |
d001648e | 1491 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
45222b9e DH |
1492 | { |
1493 | const __be32 *bp; | |
1494 | char *p; | |
1495 | int ret; | |
1496 | ||
d001648e | 1497 | _enter("{%u}", call->unmarshall); |
45222b9e DH |
1498 | |
1499 | switch (call->unmarshall) { | |
1500 | case 0: | |
1501 | call->offset = 0; | |
1502 | call->unmarshall++; | |
1503 | ||
1504 | /* extract the returned status record */ | |
1505 | case 1: | |
1506 | _debug("extract status"); | |
d001648e DH |
1507 | ret = afs_extract_data(call, call->buffer, |
1508 | 12 * 4, true); | |
372ee163 DH |
1509 | if (ret < 0) |
1510 | return ret; | |
45222b9e DH |
1511 | |
1512 | bp = call->buffer; | |
1513 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); | |
1514 | call->offset = 0; | |
1515 | call->unmarshall++; | |
1516 | ||
1517 | /* extract the volume name length */ | |
1518 | case 2: | |
d001648e | 1519 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1520 | if (ret < 0) |
1521 | return ret; | |
45222b9e DH |
1522 | |
1523 | call->count = ntohl(call->tmp); | |
1524 | _debug("volname length: %u", call->count); | |
1525 | if (call->count >= AFSNAMEMAX) | |
1526 | return -EBADMSG; | |
1527 | call->offset = 0; | |
1528 | call->unmarshall++; | |
1529 | ||
1530 | /* extract the volume name */ | |
1531 | case 3: | |
1532 | _debug("extract volname"); | |
1533 | if (call->count > 0) { | |
d001648e DH |
1534 | ret = afs_extract_data(call, call->reply3, |
1535 | call->count, true); | |
372ee163 DH |
1536 | if (ret < 0) |
1537 | return ret; | |
45222b9e DH |
1538 | } |
1539 | ||
1540 | p = call->reply3; | |
1541 | p[call->count] = 0; | |
1542 | _debug("volname '%s'", p); | |
1543 | ||
1544 | call->offset = 0; | |
1545 | call->unmarshall++; | |
1546 | ||
1547 | /* extract the volume name padding */ | |
1548 | if ((call->count & 3) == 0) { | |
1549 | call->unmarshall++; | |
1550 | goto no_volname_padding; | |
1551 | } | |
1552 | call->count = 4 - (call->count & 3); | |
1553 | ||
1554 | case 4: | |
d001648e DH |
1555 | ret = afs_extract_data(call, call->buffer, |
1556 | call->count, true); | |
372ee163 DH |
1557 | if (ret < 0) |
1558 | return ret; | |
45222b9e DH |
1559 | |
1560 | call->offset = 0; | |
1561 | call->unmarshall++; | |
1562 | no_volname_padding: | |
1563 | ||
1564 | /* extract the offline message length */ | |
1565 | case 5: | |
d001648e | 1566 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1567 | if (ret < 0) |
1568 | return ret; | |
45222b9e DH |
1569 | |
1570 | call->count = ntohl(call->tmp); | |
1571 | _debug("offline msg length: %u", call->count); | |
1572 | if (call->count >= AFSNAMEMAX) | |
1573 | return -EBADMSG; | |
1574 | call->offset = 0; | |
1575 | call->unmarshall++; | |
1576 | ||
1577 | /* extract the offline message */ | |
1578 | case 6: | |
1579 | _debug("extract offline"); | |
1580 | if (call->count > 0) { | |
d001648e DH |
1581 | ret = afs_extract_data(call, call->reply3, |
1582 | call->count, true); | |
372ee163 DH |
1583 | if (ret < 0) |
1584 | return ret; | |
45222b9e DH |
1585 | } |
1586 | ||
1587 | p = call->reply3; | |
1588 | p[call->count] = 0; | |
1589 | _debug("offline '%s'", p); | |
1590 | ||
1591 | call->offset = 0; | |
1592 | call->unmarshall++; | |
1593 | ||
1594 | /* extract the offline message padding */ | |
1595 | if ((call->count & 3) == 0) { | |
1596 | call->unmarshall++; | |
1597 | goto no_offline_padding; | |
1598 | } | |
1599 | call->count = 4 - (call->count & 3); | |
1600 | ||
1601 | case 7: | |
d001648e DH |
1602 | ret = afs_extract_data(call, call->buffer, |
1603 | call->count, true); | |
372ee163 DH |
1604 | if (ret < 0) |
1605 | return ret; | |
45222b9e DH |
1606 | |
1607 | call->offset = 0; | |
1608 | call->unmarshall++; | |
1609 | no_offline_padding: | |
1610 | ||
1611 | /* extract the message of the day length */ | |
1612 | case 8: | |
d001648e | 1613 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1614 | if (ret < 0) |
1615 | return ret; | |
45222b9e DH |
1616 | |
1617 | call->count = ntohl(call->tmp); | |
1618 | _debug("motd length: %u", call->count); | |
1619 | if (call->count >= AFSNAMEMAX) | |
1620 | return -EBADMSG; | |
1621 | call->offset = 0; | |
1622 | call->unmarshall++; | |
1623 | ||
1624 | /* extract the message of the day */ | |
1625 | case 9: | |
1626 | _debug("extract motd"); | |
1627 | if (call->count > 0) { | |
d001648e DH |
1628 | ret = afs_extract_data(call, call->reply3, |
1629 | call->count, true); | |
372ee163 DH |
1630 | if (ret < 0) |
1631 | return ret; | |
45222b9e DH |
1632 | } |
1633 | ||
1634 | p = call->reply3; | |
1635 | p[call->count] = 0; | |
1636 | _debug("motd '%s'", p); | |
1637 | ||
1638 | call->offset = 0; | |
1639 | call->unmarshall++; | |
1640 | ||
1641 | /* extract the message of the day padding */ | |
d001648e | 1642 | call->count = (4 - (call->count & 3)) & 3; |
45222b9e DH |
1643 | |
1644 | case 10: | |
d001648e DH |
1645 | ret = afs_extract_data(call, call->buffer, |
1646 | call->count, false); | |
372ee163 DH |
1647 | if (ret < 0) |
1648 | return ret; | |
45222b9e DH |
1649 | |
1650 | call->offset = 0; | |
1651 | call->unmarshall++; | |
45222b9e | 1652 | case 11: |
45222b9e DH |
1653 | break; |
1654 | } | |
1655 | ||
45222b9e DH |
1656 | _leave(" = 0 [done]"); |
1657 | return 0; | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * destroy an FS.GetVolumeStatus call | |
1662 | */ | |
1663 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1664 | { | |
1665 | kfree(call->reply3); | |
1666 | call->reply3 = NULL; | |
1667 | afs_flat_call_destructor(call); | |
1668 | } | |
1669 | ||
1670 | /* | |
1671 | * FS.GetVolumeStatus operation type | |
1672 | */ | |
1673 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1674 | .name = "FS.GetVolumeStatus", | |
1675 | .deliver = afs_deliver_fs_get_volume_status, | |
1676 | .abort_to_error = afs_abort_to_error, | |
1677 | .destructor = afs_get_volume_status_call_destructor, | |
1678 | }; | |
1679 | ||
1680 | /* | |
1681 | * fetch the status of a volume | |
1682 | */ | |
1683 | int afs_fs_get_volume_status(struct afs_server *server, | |
1684 | struct key *key, | |
1685 | struct afs_vnode *vnode, | |
1686 | struct afs_volume_status *vs, | |
56ff9c83 | 1687 | bool async) |
45222b9e DH |
1688 | { |
1689 | struct afs_call *call; | |
1690 | __be32 *bp; | |
1691 | void *tmpbuf; | |
1692 | ||
1693 | _enter(""); | |
1694 | ||
1695 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1696 | if (!tmpbuf) | |
1697 | return -ENOMEM; | |
1698 | ||
1699 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); | |
1700 | if (!call) { | |
1701 | kfree(tmpbuf); | |
1702 | return -ENOMEM; | |
1703 | } | |
1704 | ||
1705 | call->key = key; | |
1706 | call->reply = vnode; | |
1707 | call->reply2 = vs; | |
1708 | call->reply3 = tmpbuf; | |
1709 | call->service_id = FS_SERVICE; | |
1710 | call->port = htons(AFS_FS_PORT); | |
1711 | ||
1712 | /* marshall the parameters */ | |
1713 | bp = call->request; | |
1714 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1715 | bp[1] = htonl(vnode->fid.vid); | |
1716 | ||
56ff9c83 | 1717 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
45222b9e | 1718 | } |
e8d6c554 DH |
1719 | |
1720 | /* | |
1721 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1722 | */ | |
d001648e | 1723 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
e8d6c554 DH |
1724 | { |
1725 | const __be32 *bp; | |
372ee163 | 1726 | int ret; |
e8d6c554 | 1727 | |
d001648e | 1728 | _enter("{%u}", call->unmarshall); |
e8d6c554 | 1729 | |
d001648e | 1730 | ret = afs_transfer_reply(call); |
372ee163 DH |
1731 | if (ret < 0) |
1732 | return ret; | |
e8d6c554 DH |
1733 | |
1734 | /* unmarshall the reply once we've received all of it */ | |
1735 | bp = call->buffer; | |
1736 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
1737 | ||
1738 | _leave(" = 0 [done]"); | |
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | /* | |
1743 | * FS.SetLock operation type | |
1744 | */ | |
1745 | static const struct afs_call_type afs_RXFSSetLock = { | |
1746 | .name = "FS.SetLock", | |
1747 | .deliver = afs_deliver_fs_xxxx_lock, | |
1748 | .abort_to_error = afs_abort_to_error, | |
1749 | .destructor = afs_flat_call_destructor, | |
1750 | }; | |
1751 | ||
1752 | /* | |
1753 | * FS.ExtendLock operation type | |
1754 | */ | |
1755 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1756 | .name = "FS.ExtendLock", | |
1757 | .deliver = afs_deliver_fs_xxxx_lock, | |
1758 | .abort_to_error = afs_abort_to_error, | |
1759 | .destructor = afs_flat_call_destructor, | |
1760 | }; | |
1761 | ||
1762 | /* | |
1763 | * FS.ReleaseLock operation type | |
1764 | */ | |
1765 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1766 | .name = "FS.ReleaseLock", | |
1767 | .deliver = afs_deliver_fs_xxxx_lock, | |
1768 | .abort_to_error = afs_abort_to_error, | |
1769 | .destructor = afs_flat_call_destructor, | |
1770 | }; | |
1771 | ||
1772 | /* | |
1773 | * get a lock on a file | |
1774 | */ | |
1775 | int afs_fs_set_lock(struct afs_server *server, | |
1776 | struct key *key, | |
1777 | struct afs_vnode *vnode, | |
1778 | afs_lock_type_t type, | |
56ff9c83 | 1779 | bool async) |
e8d6c554 DH |
1780 | { |
1781 | struct afs_call *call; | |
1782 | __be32 *bp; | |
1783 | ||
1784 | _enter(""); | |
1785 | ||
1786 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); | |
1787 | if (!call) | |
1788 | return -ENOMEM; | |
1789 | ||
1790 | call->key = key; | |
1791 | call->reply = vnode; | |
1792 | call->service_id = FS_SERVICE; | |
1793 | call->port = htons(AFS_FS_PORT); | |
1794 | ||
1795 | /* marshall the parameters */ | |
1796 | bp = call->request; | |
1797 | *bp++ = htonl(FSSETLOCK); | |
1798 | *bp++ = htonl(vnode->fid.vid); | |
1799 | *bp++ = htonl(vnode->fid.vnode); | |
1800 | *bp++ = htonl(vnode->fid.unique); | |
1801 | *bp++ = htonl(type); | |
1802 | ||
56ff9c83 | 1803 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 DH |
1804 | } |
1805 | ||
1806 | /* | |
1807 | * extend a lock on a file | |
1808 | */ | |
1809 | int afs_fs_extend_lock(struct afs_server *server, | |
1810 | struct key *key, | |
1811 | struct afs_vnode *vnode, | |
56ff9c83 | 1812 | bool async) |
e8d6c554 DH |
1813 | { |
1814 | struct afs_call *call; | |
1815 | __be32 *bp; | |
1816 | ||
1817 | _enter(""); | |
1818 | ||
1819 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); | |
1820 | if (!call) | |
1821 | return -ENOMEM; | |
1822 | ||
1823 | call->key = key; | |
1824 | call->reply = vnode; | |
1825 | call->service_id = FS_SERVICE; | |
1826 | call->port = htons(AFS_FS_PORT); | |
1827 | ||
1828 | /* marshall the parameters */ | |
1829 | bp = call->request; | |
1830 | *bp++ = htonl(FSEXTENDLOCK); | |
1831 | *bp++ = htonl(vnode->fid.vid); | |
1832 | *bp++ = htonl(vnode->fid.vnode); | |
1833 | *bp++ = htonl(vnode->fid.unique); | |
1834 | ||
56ff9c83 | 1835 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 DH |
1836 | } |
1837 | ||
1838 | /* | |
1839 | * release a lock on a file | |
1840 | */ | |
1841 | int afs_fs_release_lock(struct afs_server *server, | |
1842 | struct key *key, | |
1843 | struct afs_vnode *vnode, | |
56ff9c83 | 1844 | bool async) |
e8d6c554 DH |
1845 | { |
1846 | struct afs_call *call; | |
1847 | __be32 *bp; | |
1848 | ||
1849 | _enter(""); | |
1850 | ||
1851 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); | |
1852 | if (!call) | |
1853 | return -ENOMEM; | |
1854 | ||
1855 | call->key = key; | |
1856 | call->reply = vnode; | |
1857 | call->service_id = FS_SERVICE; | |
1858 | call->port = htons(AFS_FS_PORT); | |
1859 | ||
1860 | /* marshall the parameters */ | |
1861 | bp = call->request; | |
1862 | *bp++ = htonl(FSRELEASELOCK); | |
1863 | *bp++ = htonl(vnode->fid.vid); | |
1864 | *bp++ = htonl(vnode->fid.vnode); | |
1865 | *bp++ = htonl(vnode->fid.unique); | |
1866 | ||
56ff9c83 | 1867 | return afs_make_call(&server->addr, call, GFP_NOFS, async); |
e8d6c554 | 1868 | } |