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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 | ||
d2ddc776 | 25 | static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi) |
c435ee34 | 26 | { |
d2ddc776 | 27 | call->cbi = afs_get_cb_interest(cbi); |
c435ee34 DH |
28 | } |
29 | ||
260a9803 DH |
30 | /* |
31 | * decode an AFSFid block | |
32 | */ | |
33 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
34 | { | |
35 | const __be32 *bp = *_bp; | |
36 | ||
37 | fid->vid = ntohl(*bp++); | |
38 | fid->vnode = ntohl(*bp++); | |
39 | fid->unique = ntohl(*bp++); | |
40 | *_bp = bp; | |
41 | } | |
42 | ||
1da177e4 | 43 | /* |
08e0e7c8 | 44 | * decode an AFSFetchStatus block |
1da177e4 | 45 | */ |
08e0e7c8 | 46 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 47 | struct afs_file_status *status, |
31143d5d DH |
48 | struct afs_vnode *vnode, |
49 | afs_dataversion_t *store_version) | |
1da177e4 | 50 | { |
31143d5d | 51 | afs_dataversion_t expected_version; |
08e0e7c8 DH |
52 | const __be32 *bp = *_bp; |
53 | umode_t mode; | |
260a9803 | 54 | u64 data_version, size; |
c435ee34 | 55 | bool changed = false; |
a0a5386a EB |
56 | kuid_t owner; |
57 | kgid_t group; | |
08e0e7c8 | 58 | |
d2ddc776 DH |
59 | if (vnode) |
60 | write_seqlock(&vnode->cb_lock); | |
c435ee34 | 61 | |
08e0e7c8 DH |
62 | #define EXTRACT(DST) \ |
63 | do { \ | |
64 | u32 x = ntohl(*bp++); \ | |
c435ee34 DH |
65 | if (DST != x) \ |
66 | changed |= true; \ | |
08e0e7c8 DH |
67 | DST = x; \ |
68 | } while (0) | |
69 | ||
260a9803 DH |
70 | status->if_version = ntohl(*bp++); |
71 | EXTRACT(status->type); | |
72 | EXTRACT(status->nlink); | |
73 | size = ntohl(*bp++); | |
08e0e7c8 | 74 | data_version = ntohl(*bp++); |
260a9803 | 75 | EXTRACT(status->author); |
a0a5386a EB |
76 | owner = make_kuid(&init_user_ns, ntohl(*bp++)); |
77 | changed |= !uid_eq(owner, status->owner); | |
78 | status->owner = owner; | |
260a9803 DH |
79 | EXTRACT(status->caller_access); /* call ticket dependent */ |
80 | EXTRACT(status->anon_access); | |
81 | EXTRACT(status->mode); | |
be080a6f DH |
82 | bp++; /* parent.vnode */ |
83 | bp++; /* parent.unique */ | |
08e0e7c8 | 84 | bp++; /* seg size */ |
260a9803 DH |
85 | status->mtime_client = ntohl(*bp++); |
86 | status->mtime_server = ntohl(*bp++); | |
a0a5386a EB |
87 | group = make_kgid(&init_user_ns, ntohl(*bp++)); |
88 | changed |= !gid_eq(group, status->group); | |
89 | status->group = group; | |
08e0e7c8 DH |
90 | bp++; /* sync counter */ |
91 | data_version |= (u64) ntohl(*bp++) << 32; | |
e8d6c554 | 92 | EXTRACT(status->lock_count); |
260a9803 DH |
93 | size |= (u64) ntohl(*bp++) << 32; |
94 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
95 | *_bp = bp; |
96 | ||
260a9803 DH |
97 | if (size != status->size) { |
98 | status->size = size; | |
99 | changed |= true; | |
08e0e7c8 | 100 | } |
260a9803 | 101 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
102 | |
103 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
104 | status->mtime_client, status->mtime_server); |
105 | ||
106 | if (vnode) { | |
260a9803 DH |
107 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { |
108 | _debug("vnode changed"); | |
109 | i_size_write(&vnode->vfs_inode, size); | |
110 | vnode->vfs_inode.i_uid = status->owner; | |
111 | vnode->vfs_inode.i_gid = status->group; | |
d6e43f75 | 112 | vnode->vfs_inode.i_generation = vnode->fid.unique; |
bfe86848 | 113 | set_nlink(&vnode->vfs_inode, status->nlink); |
260a9803 DH |
114 | |
115 | mode = vnode->vfs_inode.i_mode; | |
116 | mode &= ~S_IALLUGO; | |
117 | mode |= status->mode; | |
118 | barrier(); | |
119 | vnode->vfs_inode.i_mode = mode; | |
120 | } | |
121 | ||
ab94f5d0 | 122 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_client; |
260a9803 DH |
123 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; |
124 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
d6e43f75 | 125 | vnode->vfs_inode.i_version = data_version; |
260a9803 DH |
126 | } |
127 | ||
31143d5d DH |
128 | expected_version = status->data_version; |
129 | if (store_version) | |
130 | expected_version = *store_version; | |
131 | ||
132 | if (expected_version != data_version) { | |
260a9803 DH |
133 | status->data_version = data_version; |
134 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
135 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
136 | (unsigned long long) data_version, |
137 | vnode->fid.vid, vnode->fid.vnode); | |
c435ee34 | 138 | set_bit(AFS_VNODE_DIR_MODIFIED, &vnode->flags); |
260a9803 DH |
139 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); |
140 | } | |
31143d5d DH |
141 | } else if (store_version) { |
142 | status->data_version = data_version; | |
1da177e4 | 143 | } |
c435ee34 | 144 | |
d2ddc776 DH |
145 | if (vnode) |
146 | write_sequnlock(&vnode->cb_lock); | |
ec26815a | 147 | } |
1da177e4 | 148 | |
1da177e4 | 149 | /* |
08e0e7c8 | 150 | * decode an AFSCallBack block |
1da177e4 | 151 | */ |
c435ee34 DH |
152 | static void xdr_decode_AFSCallBack(struct afs_call *call, |
153 | struct afs_vnode *vnode, | |
154 | const __be32 **_bp) | |
1da177e4 | 155 | { |
d2ddc776 | 156 | struct afs_cb_interest *old, *cbi = call->cbi; |
08e0e7c8 | 157 | const __be32 *bp = *_bp; |
c435ee34 DH |
158 | u32 cb_expiry; |
159 | ||
160 | write_seqlock(&vnode->cb_lock); | |
161 | ||
d2ddc776 | 162 | if (call->cb_break == (vnode->cb_break + cbi->server->cb_s_break)) { |
c435ee34 DH |
163 | vnode->cb_version = ntohl(*bp++); |
164 | cb_expiry = ntohl(*bp++); | |
165 | vnode->cb_type = ntohl(*bp++); | |
166 | vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds(); | |
d2ddc776 DH |
167 | old = vnode->cb_interest; |
168 | if (old != call->cbi) { | |
169 | vnode->cb_interest = cbi; | |
170 | cbi = old; | |
171 | } | |
c435ee34 DH |
172 | set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); |
173 | } else { | |
174 | bp += 3; | |
175 | } | |
1da177e4 | 176 | |
c435ee34 | 177 | write_sequnlock(&vnode->cb_lock); |
d2ddc776 | 178 | call->cbi = cbi; |
08e0e7c8 | 179 | *_bp = bp; |
ec26815a | 180 | } |
1da177e4 | 181 | |
260a9803 DH |
182 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
183 | struct afs_callback *cb) | |
184 | { | |
185 | const __be32 *bp = *_bp; | |
186 | ||
187 | cb->version = ntohl(*bp++); | |
188 | cb->expiry = ntohl(*bp++); | |
189 | cb->type = ntohl(*bp++); | |
190 | *_bp = bp; | |
191 | } | |
192 | ||
1da177e4 | 193 | /* |
08e0e7c8 | 194 | * decode an AFSVolSync block |
1da177e4 | 195 | */ |
08e0e7c8 DH |
196 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
197 | struct afs_volsync *volsync) | |
1da177e4 | 198 | { |
08e0e7c8 | 199 | const __be32 *bp = *_bp; |
1da177e4 | 200 | |
08e0e7c8 DH |
201 | volsync->creation = ntohl(*bp++); |
202 | bp++; /* spare2 */ | |
203 | bp++; /* spare3 */ | |
204 | bp++; /* spare4 */ | |
205 | bp++; /* spare5 */ | |
206 | bp++; /* spare6 */ | |
207 | *_bp = bp; | |
208 | } | |
1da177e4 | 209 | |
31143d5d DH |
210 | /* |
211 | * encode the requested attributes into an AFSStoreStatus block | |
212 | */ | |
213 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) | |
214 | { | |
215 | __be32 *bp = *_bp; | |
216 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; | |
217 | ||
218 | mask = 0; | |
219 | if (attr->ia_valid & ATTR_MTIME) { | |
220 | mask |= AFS_SET_MTIME; | |
221 | mtime = attr->ia_mtime.tv_sec; | |
222 | } | |
223 | ||
224 | if (attr->ia_valid & ATTR_UID) { | |
225 | mask |= AFS_SET_OWNER; | |
a0a5386a | 226 | owner = from_kuid(&init_user_ns, attr->ia_uid); |
31143d5d DH |
227 | } |
228 | ||
229 | if (attr->ia_valid & ATTR_GID) { | |
230 | mask |= AFS_SET_GROUP; | |
a0a5386a | 231 | group = from_kgid(&init_user_ns, attr->ia_gid); |
31143d5d DH |
232 | } |
233 | ||
234 | if (attr->ia_valid & ATTR_MODE) { | |
235 | mask |= AFS_SET_MODE; | |
236 | mode = attr->ia_mode & S_IALLUGO; | |
237 | } | |
238 | ||
239 | *bp++ = htonl(mask); | |
240 | *bp++ = htonl(mtime); | |
241 | *bp++ = htonl(owner); | |
242 | *bp++ = htonl(group); | |
243 | *bp++ = htonl(mode); | |
244 | *bp++ = 0; /* segment size */ | |
245 | *_bp = bp; | |
246 | } | |
247 | ||
45222b9e DH |
248 | /* |
249 | * decode an AFSFetchVolumeStatus block | |
250 | */ | |
251 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, | |
252 | struct afs_volume_status *vs) | |
253 | { | |
254 | const __be32 *bp = *_bp; | |
255 | ||
256 | vs->vid = ntohl(*bp++); | |
257 | vs->parent_id = ntohl(*bp++); | |
258 | vs->online = ntohl(*bp++); | |
259 | vs->in_service = ntohl(*bp++); | |
260 | vs->blessed = ntohl(*bp++); | |
261 | vs->needs_salvage = ntohl(*bp++); | |
262 | vs->type = ntohl(*bp++); | |
263 | vs->min_quota = ntohl(*bp++); | |
264 | vs->max_quota = ntohl(*bp++); | |
265 | vs->blocks_in_use = ntohl(*bp++); | |
266 | vs->part_blocks_avail = ntohl(*bp++); | |
267 | vs->part_max_blocks = ntohl(*bp++); | |
268 | *_bp = bp; | |
269 | } | |
270 | ||
08e0e7c8 DH |
271 | /* |
272 | * deliver reply data to an FS.FetchStatus | |
273 | */ | |
d001648e | 274 | static int afs_deliver_fs_fetch_status(struct afs_call *call) |
08e0e7c8 | 275 | { |
97e3043a | 276 | struct afs_vnode *vnode = call->reply[0]; |
08e0e7c8 | 277 | const __be32 *bp; |
372ee163 | 278 | int ret; |
1da177e4 | 279 | |
d001648e | 280 | ret = afs_transfer_reply(call); |
372ee163 DH |
281 | if (ret < 0) |
282 | return ret; | |
1da177e4 | 283 | |
c435ee34 DH |
284 | _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode); |
285 | ||
08e0e7c8 DH |
286 | /* unmarshall the reply once we've received all of it */ |
287 | bp = call->buffer; | |
31143d5d | 288 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
c435ee34 | 289 | xdr_decode_AFSCallBack(call, vnode, &bp); |
97e3043a DH |
290 | if (call->reply[1]) |
291 | xdr_decode_AFSVolSync(&bp, call->reply[1]); | |
1da177e4 | 292 | |
08e0e7c8 DH |
293 | _leave(" = 0 [done]"); |
294 | return 0; | |
ec26815a | 295 | } |
08e0e7c8 DH |
296 | |
297 | /* | |
298 | * FS.FetchStatus operation type | |
299 | */ | |
300 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 301 | .name = "FS.FetchStatus", |
08e0e7c8 | 302 | .deliver = afs_deliver_fs_fetch_status, |
08e0e7c8 DH |
303 | .destructor = afs_flat_call_destructor, |
304 | }; | |
1da177e4 | 305 | |
1da177e4 LT |
306 | /* |
307 | * fetch the status information for a file | |
308 | */ | |
d2ddc776 | 309 | int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync) |
1da177e4 | 310 | { |
d2ddc776 | 311 | struct afs_vnode *vnode = fc->vnode; |
08e0e7c8 | 312 | struct afs_call *call; |
f044c884 | 313 | struct afs_net *net = afs_v2net(vnode); |
1da177e4 LT |
314 | __be32 *bp; |
315 | ||
416351f2 | 316 | _enter(",%x,{%x:%u},,", |
d2ddc776 | 317 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 318 | |
f044c884 | 319 | call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
d2ddc776 DH |
320 | if (!call) { |
321 | fc->ac.error = -ENOMEM; | |
08e0e7c8 | 322 | return -ENOMEM; |
d2ddc776 | 323 | } |
1da177e4 | 324 | |
d2ddc776 | 325 | call->key = fc->key; |
97e3043a DH |
326 | call->reply[0] = vnode; |
327 | call->reply[1] = volsync; | |
1da177e4 LT |
328 | |
329 | /* marshall the parameters */ | |
08e0e7c8 | 330 | bp = call->request; |
1da177e4 LT |
331 | bp[0] = htonl(FSFETCHSTATUS); |
332 | bp[1] = htonl(vnode->fid.vid); | |
333 | bp[2] = htonl(vnode->fid.vnode); | |
334 | bp[3] = htonl(vnode->fid.unique); | |
335 | ||
d2ddc776 DH |
336 | call->cb_break = fc->cb_break; |
337 | afs_use_fs_server(call, fc->cbi); | |
338 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
ec26815a | 339 | } |
1da177e4 | 340 | |
1da177e4 | 341 | /* |
08e0e7c8 | 342 | * deliver reply data to an FS.FetchData |
1da177e4 | 343 | */ |
d001648e | 344 | static int afs_deliver_fs_fetch_data(struct afs_call *call) |
1da177e4 | 345 | { |
97e3043a DH |
346 | struct afs_vnode *vnode = call->reply[0]; |
347 | struct afs_read *req = call->reply[2]; | |
08e0e7c8 | 348 | const __be32 *bp; |
196ee9cd | 349 | unsigned int size; |
08e0e7c8 | 350 | void *buffer; |
1da177e4 | 351 | int ret; |
1da177e4 | 352 | |
6a0e3999 | 353 | _enter("{%u,%zu/%u;%llu/%llu}", |
196ee9cd DH |
354 | call->unmarshall, call->offset, call->count, |
355 | req->remain, req->actual_len); | |
08e0e7c8 DH |
356 | |
357 | switch (call->unmarshall) { | |
358 | case 0: | |
196ee9cd | 359 | req->actual_len = 0; |
08e0e7c8 DH |
360 | call->offset = 0; |
361 | call->unmarshall++; | |
b9b1f8d5 DH |
362 | if (call->operation_ID != FSFETCHDATA64) { |
363 | call->unmarshall++; | |
364 | goto no_msw; | |
365 | } | |
08e0e7c8 | 366 | |
b9b1f8d5 DH |
367 | /* extract the upper part of the returned data length of an |
368 | * FSFETCHDATA64 op (which should always be 0 using this | |
369 | * client) */ | |
08e0e7c8 | 370 | case 1: |
b9b1f8d5 | 371 | _debug("extract data length (MSW)"); |
d001648e | 372 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
373 | if (ret < 0) |
374 | return ret; | |
b9b1f8d5 | 375 | |
196ee9cd DH |
376 | req->actual_len = ntohl(call->tmp); |
377 | req->actual_len <<= 32; | |
b9b1f8d5 DH |
378 | call->offset = 0; |
379 | call->unmarshall++; | |
380 | ||
381 | no_msw: | |
382 | /* extract the returned data length */ | |
383 | case 2: | |
08e0e7c8 | 384 | _debug("extract data length"); |
d001648e | 385 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
386 | if (ret < 0) |
387 | return ret; | |
1da177e4 | 388 | |
196ee9cd DH |
389 | req->actual_len |= ntohl(call->tmp); |
390 | _debug("DATA length: %llu", req->actual_len); | |
196ee9cd DH |
391 | |
392 | req->remain = req->actual_len; | |
393 | call->offset = req->pos & (PAGE_SIZE - 1); | |
394 | req->index = 0; | |
395 | if (req->actual_len == 0) | |
396 | goto no_more_data; | |
08e0e7c8 DH |
397 | call->unmarshall++; |
398 | ||
196ee9cd | 399 | begin_page: |
6db3ac3c | 400 | ASSERTCMP(req->index, <, req->nr_pages); |
196ee9cd DH |
401 | if (req->remain > PAGE_SIZE - call->offset) |
402 | size = PAGE_SIZE - call->offset; | |
403 | else | |
404 | size = req->remain; | |
405 | call->count = call->offset + size; | |
406 | ASSERTCMP(call->count, <=, PAGE_SIZE); | |
407 | req->remain -= size; | |
408 | ||
08e0e7c8 | 409 | /* extract the returned data */ |
b9b1f8d5 | 410 | case 3: |
6a0e3999 | 411 | _debug("extract data %llu/%llu %zu/%u", |
196ee9cd DH |
412 | req->remain, req->actual_len, call->offset, call->count); |
413 | ||
414 | buffer = kmap(req->pages[req->index]); | |
415 | ret = afs_extract_data(call, buffer, call->count, true); | |
416 | kunmap(req->pages[req->index]); | |
417 | if (ret < 0) | |
418 | return ret; | |
419 | if (call->offset == PAGE_SIZE) { | |
420 | if (req->page_done) | |
421 | req->page_done(call, req); | |
29f06985 | 422 | req->index++; |
196ee9cd | 423 | if (req->remain > 0) { |
196ee9cd | 424 | call->offset = 0; |
e8e581a8 DH |
425 | if (req->index >= req->nr_pages) { |
426 | call->unmarshall = 4; | |
6db3ac3c | 427 | goto begin_discard; |
e8e581a8 | 428 | } |
196ee9cd DH |
429 | goto begin_page; |
430 | } | |
08e0e7c8 | 431 | } |
6db3ac3c DH |
432 | goto no_more_data; |
433 | ||
434 | /* Discard any excess data the server gave us */ | |
435 | begin_discard: | |
436 | case 4: | |
6a0e3999 | 437 | size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain); |
6db3ac3c | 438 | call->count = size; |
6a0e3999 | 439 | _debug("extract discard %llu/%llu %zu/%u", |
6db3ac3c DH |
440 | req->remain, req->actual_len, call->offset, call->count); |
441 | ||
442 | call->offset = 0; | |
443 | ret = afs_extract_data(call, afs_discard_buffer, call->count, true); | |
444 | req->remain -= call->offset; | |
445 | if (ret < 0) | |
446 | return ret; | |
447 | if (req->remain > 0) | |
448 | goto begin_discard; | |
1da177e4 | 449 | |
196ee9cd | 450 | no_more_data: |
08e0e7c8 | 451 | call->offset = 0; |
6db3ac3c | 452 | call->unmarshall = 5; |
1da177e4 | 453 | |
08e0e7c8 | 454 | /* extract the metadata */ |
6db3ac3c | 455 | case 5: |
d001648e DH |
456 | ret = afs_extract_data(call, call->buffer, |
457 | (21 + 3 + 6) * 4, false); | |
372ee163 DH |
458 | if (ret < 0) |
459 | return ret; | |
08e0e7c8 DH |
460 | |
461 | bp = call->buffer; | |
31143d5d | 462 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
c435ee34 | 463 | xdr_decode_AFSCallBack(call, vnode, &bp); |
97e3043a DH |
464 | if (call->reply[1]) |
465 | xdr_decode_AFSVolSync(&bp, call->reply[1]); | |
08e0e7c8 DH |
466 | |
467 | call->offset = 0; | |
468 | call->unmarshall++; | |
1da177e4 | 469 | |
6db3ac3c | 470 | case 6: |
08e0e7c8 | 471 | break; |
1da177e4 LT |
472 | } |
473 | ||
6db3ac3c DH |
474 | for (; req->index < req->nr_pages; req->index++) { |
475 | if (call->count < PAGE_SIZE) | |
476 | zero_user_segment(req->pages[req->index], | |
477 | call->count, PAGE_SIZE); | |
196ee9cd DH |
478 | if (req->page_done) |
479 | req->page_done(call, req); | |
6db3ac3c | 480 | call->count = 0; |
416351f2 DH |
481 | } |
482 | ||
08e0e7c8 DH |
483 | _leave(" = 0 [done]"); |
484 | return 0; | |
ec26815a | 485 | } |
1da177e4 | 486 | |
196ee9cd DH |
487 | static void afs_fetch_data_destructor(struct afs_call *call) |
488 | { | |
97e3043a | 489 | struct afs_read *req = call->reply[2]; |
196ee9cd DH |
490 | |
491 | afs_put_read(req); | |
492 | afs_flat_call_destructor(call); | |
493 | } | |
494 | ||
1da177e4 | 495 | /* |
08e0e7c8 | 496 | * FS.FetchData operation type |
1da177e4 | 497 | */ |
08e0e7c8 | 498 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 499 | .name = "FS.FetchData", |
08e0e7c8 | 500 | .deliver = afs_deliver_fs_fetch_data, |
196ee9cd | 501 | .destructor = afs_fetch_data_destructor, |
08e0e7c8 DH |
502 | }; |
503 | ||
b9b1f8d5 DH |
504 | static const struct afs_call_type afs_RXFSFetchData64 = { |
505 | .name = "FS.FetchData64", | |
506 | .deliver = afs_deliver_fs_fetch_data, | |
196ee9cd | 507 | .destructor = afs_fetch_data_destructor, |
b9b1f8d5 DH |
508 | }; |
509 | ||
510 | /* | |
511 | * fetch data from a very large file | |
512 | */ | |
d2ddc776 | 513 | static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req) |
b9b1f8d5 | 514 | { |
d2ddc776 | 515 | struct afs_vnode *vnode = fc->vnode; |
b9b1f8d5 | 516 | struct afs_call *call; |
f044c884 | 517 | struct afs_net *net = afs_v2net(vnode); |
b9b1f8d5 DH |
518 | __be32 *bp; |
519 | ||
520 | _enter(""); | |
521 | ||
f044c884 | 522 | call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
b9b1f8d5 DH |
523 | if (!call) |
524 | return -ENOMEM; | |
525 | ||
d2ddc776 | 526 | call->key = fc->key; |
97e3043a DH |
527 | call->reply[0] = vnode; |
528 | call->reply[1] = NULL; /* volsync */ | |
529 | call->reply[2] = req; | |
b9b1f8d5 DH |
530 | call->operation_ID = FSFETCHDATA64; |
531 | ||
532 | /* marshall the parameters */ | |
533 | bp = call->request; | |
534 | bp[0] = htonl(FSFETCHDATA64); | |
535 | bp[1] = htonl(vnode->fid.vid); | |
536 | bp[2] = htonl(vnode->fid.vnode); | |
537 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
538 | bp[4] = htonl(upper_32_bits(req->pos)); |
539 | bp[5] = htonl(lower_32_bits(req->pos)); | |
b9b1f8d5 | 540 | bp[6] = 0; |
196ee9cd | 541 | bp[7] = htonl(lower_32_bits(req->len)); |
b9b1f8d5 | 542 | |
196ee9cd | 543 | atomic_inc(&req->usage); |
d2ddc776 DH |
544 | call->cb_break = fc->cb_break; |
545 | afs_use_fs_server(call, fc->cbi); | |
546 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
b9b1f8d5 DH |
547 | } |
548 | ||
08e0e7c8 DH |
549 | /* |
550 | * fetch data from a file | |
551 | */ | |
d2ddc776 | 552 | int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) |
1da177e4 | 553 | { |
d2ddc776 | 554 | struct afs_vnode *vnode = fc->vnode; |
08e0e7c8 | 555 | struct afs_call *call; |
f044c884 | 556 | struct afs_net *net = afs_v2net(vnode); |
1da177e4 LT |
557 | __be32 *bp; |
558 | ||
196ee9cd DH |
559 | if (upper_32_bits(req->pos) || |
560 | upper_32_bits(req->len) || | |
561 | upper_32_bits(req->pos + req->len)) | |
d2ddc776 | 562 | return afs_fs_fetch_data64(fc, req); |
b9b1f8d5 | 563 | |
08e0e7c8 | 564 | _enter(""); |
1da177e4 | 565 | |
f044c884 | 566 | call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
567 | if (!call) |
568 | return -ENOMEM; | |
1da177e4 | 569 | |
d2ddc776 | 570 | call->key = fc->key; |
97e3043a DH |
571 | call->reply[0] = vnode; |
572 | call->reply[1] = NULL; /* volsync */ | |
573 | call->reply[2] = req; | |
b9b1f8d5 | 574 | call->operation_ID = FSFETCHDATA; |
1da177e4 LT |
575 | |
576 | /* marshall the parameters */ | |
08e0e7c8 DH |
577 | bp = call->request; |
578 | bp[0] = htonl(FSFETCHDATA); | |
579 | bp[1] = htonl(vnode->fid.vid); | |
580 | bp[2] = htonl(vnode->fid.vnode); | |
581 | bp[3] = htonl(vnode->fid.unique); | |
196ee9cd DH |
582 | bp[4] = htonl(lower_32_bits(req->pos)); |
583 | bp[5] = htonl(lower_32_bits(req->len)); | |
1da177e4 | 584 | |
196ee9cd | 585 | atomic_inc(&req->usage); |
d2ddc776 DH |
586 | call->cb_break = fc->cb_break; |
587 | afs_use_fs_server(call, fc->cbi); | |
588 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
ec26815a | 589 | } |
260a9803 DH |
590 | |
591 | /* | |
592 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
593 | */ | |
d001648e | 594 | static int afs_deliver_fs_create_vnode(struct afs_call *call) |
260a9803 | 595 | { |
97e3043a | 596 | struct afs_vnode *vnode = call->reply[0]; |
260a9803 | 597 | const __be32 *bp; |
372ee163 | 598 | int ret; |
260a9803 | 599 | |
d001648e | 600 | _enter("{%u}", call->unmarshall); |
260a9803 | 601 | |
d001648e | 602 | ret = afs_transfer_reply(call); |
372ee163 DH |
603 | if (ret < 0) |
604 | return ret; | |
260a9803 DH |
605 | |
606 | /* unmarshall the reply once we've received all of it */ | |
607 | bp = call->buffer; | |
97e3043a DH |
608 | xdr_decode_AFSFid(&bp, call->reply[1]); |
609 | xdr_decode_AFSFetchStatus(&bp, call->reply[2], NULL, NULL); | |
31143d5d | 610 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
97e3043a DH |
611 | xdr_decode_AFSCallBack_raw(&bp, call->reply[3]); |
612 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ | |
260a9803 DH |
613 | |
614 | _leave(" = 0 [done]"); | |
615 | return 0; | |
616 | } | |
617 | ||
618 | /* | |
619 | * FS.CreateFile and FS.MakeDir operation type | |
620 | */ | |
621 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
622 | .name = "FS.CreateXXXX", | |
623 | .deliver = afs_deliver_fs_create_vnode, | |
260a9803 DH |
624 | .destructor = afs_flat_call_destructor, |
625 | }; | |
626 | ||
627 | /* | |
628 | * create a file or make a directory | |
629 | */ | |
8b2a464c | 630 | int afs_fs_create(struct afs_fs_cursor *fc, |
260a9803 DH |
631 | const char *name, |
632 | umode_t mode, | |
633 | struct afs_fid *newfid, | |
634 | struct afs_file_status *newstatus, | |
d2ddc776 | 635 | struct afs_callback *newcb) |
260a9803 | 636 | { |
d2ddc776 | 637 | struct afs_vnode *vnode = fc->vnode; |
260a9803 | 638 | struct afs_call *call; |
f044c884 | 639 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
640 | size_t namesz, reqsz, padsz; |
641 | __be32 *bp; | |
642 | ||
643 | _enter(""); | |
644 | ||
645 | namesz = strlen(name); | |
646 | padsz = (4 - (namesz & 3)) & 3; | |
647 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
648 | ||
f044c884 | 649 | call = afs_alloc_flat_call(net, &afs_RXFSCreateXXXX, reqsz, |
260a9803 DH |
650 | (3 + 21 + 21 + 3 + 6) * 4); |
651 | if (!call) | |
652 | return -ENOMEM; | |
653 | ||
d2ddc776 | 654 | call->key = fc->key; |
97e3043a DH |
655 | call->reply[0] = vnode; |
656 | call->reply[1] = newfid; | |
657 | call->reply[2] = newstatus; | |
658 | call->reply[3] = newcb; | |
260a9803 DH |
659 | |
660 | /* marshall the parameters */ | |
661 | bp = call->request; | |
662 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
663 | *bp++ = htonl(vnode->fid.vid); | |
664 | *bp++ = htonl(vnode->fid.vnode); | |
665 | *bp++ = htonl(vnode->fid.unique); | |
666 | *bp++ = htonl(namesz); | |
667 | memcpy(bp, name, namesz); | |
668 | bp = (void *) bp + namesz; | |
669 | if (padsz > 0) { | |
670 | memset(bp, 0, padsz); | |
671 | bp = (void *) bp + padsz; | |
672 | } | |
ab94f5d0 MD |
673 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
674 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
260a9803 DH |
675 | *bp++ = 0; /* owner */ |
676 | *bp++ = 0; /* group */ | |
677 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
678 | *bp++ = 0; /* segment size */ | |
679 | ||
d2ddc776 DH |
680 | afs_use_fs_server(call, fc->cbi); |
681 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
260a9803 DH |
682 | } |
683 | ||
684 | /* | |
685 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
686 | */ | |
d001648e | 687 | static int afs_deliver_fs_remove(struct afs_call *call) |
260a9803 | 688 | { |
97e3043a | 689 | struct afs_vnode *vnode = call->reply[0]; |
260a9803 | 690 | const __be32 *bp; |
372ee163 | 691 | int ret; |
260a9803 | 692 | |
d001648e | 693 | _enter("{%u}", call->unmarshall); |
260a9803 | 694 | |
d001648e | 695 | ret = afs_transfer_reply(call); |
372ee163 DH |
696 | if (ret < 0) |
697 | return ret; | |
260a9803 DH |
698 | |
699 | /* unmarshall the reply once we've received all of it */ | |
700 | bp = call->buffer; | |
31143d5d | 701 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
97e3043a | 702 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
703 | |
704 | _leave(" = 0 [done]"); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | /* | |
709 | * FS.RemoveDir/FS.RemoveFile operation type | |
710 | */ | |
711 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
712 | .name = "FS.RemoveXXXX", | |
713 | .deliver = afs_deliver_fs_remove, | |
260a9803 DH |
714 | .destructor = afs_flat_call_destructor, |
715 | }; | |
716 | ||
717 | /* | |
718 | * remove a file or directory | |
719 | */ | |
d2ddc776 | 720 | int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir) |
260a9803 | 721 | { |
d2ddc776 | 722 | struct afs_vnode *vnode = fc->vnode; |
260a9803 | 723 | struct afs_call *call; |
f044c884 | 724 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
725 | size_t namesz, reqsz, padsz; |
726 | __be32 *bp; | |
727 | ||
728 | _enter(""); | |
729 | ||
730 | namesz = strlen(name); | |
731 | padsz = (4 - (namesz & 3)) & 3; | |
732 | reqsz = (5 * 4) + namesz + padsz; | |
733 | ||
f044c884 | 734 | call = afs_alloc_flat_call(net, &afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); |
260a9803 DH |
735 | if (!call) |
736 | return -ENOMEM; | |
737 | ||
d2ddc776 | 738 | call->key = fc->key; |
97e3043a | 739 | call->reply[0] = vnode; |
260a9803 DH |
740 | |
741 | /* marshall the parameters */ | |
742 | bp = call->request; | |
743 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
744 | *bp++ = htonl(vnode->fid.vid); | |
745 | *bp++ = htonl(vnode->fid.vnode); | |
746 | *bp++ = htonl(vnode->fid.unique); | |
747 | *bp++ = htonl(namesz); | |
748 | memcpy(bp, name, namesz); | |
749 | bp = (void *) bp + namesz; | |
750 | if (padsz > 0) { | |
751 | memset(bp, 0, padsz); | |
752 | bp = (void *) bp + padsz; | |
753 | } | |
754 | ||
d2ddc776 DH |
755 | afs_use_fs_server(call, fc->cbi); |
756 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
260a9803 DH |
757 | } |
758 | ||
759 | /* | |
760 | * deliver reply data to an FS.Link | |
761 | */ | |
d001648e | 762 | static int afs_deliver_fs_link(struct afs_call *call) |
260a9803 | 763 | { |
97e3043a | 764 | struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1]; |
260a9803 | 765 | const __be32 *bp; |
372ee163 | 766 | int ret; |
260a9803 | 767 | |
d001648e | 768 | _enter("{%u}", call->unmarshall); |
260a9803 | 769 | |
d001648e | 770 | ret = afs_transfer_reply(call); |
372ee163 DH |
771 | if (ret < 0) |
772 | return ret; | |
260a9803 DH |
773 | |
774 | /* unmarshall the reply once we've received all of it */ | |
775 | bp = call->buffer; | |
31143d5d DH |
776 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
777 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); | |
97e3043a | 778 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
779 | |
780 | _leave(" = 0 [done]"); | |
781 | return 0; | |
782 | } | |
783 | ||
784 | /* | |
785 | * FS.Link operation type | |
786 | */ | |
787 | static const struct afs_call_type afs_RXFSLink = { | |
788 | .name = "FS.Link", | |
789 | .deliver = afs_deliver_fs_link, | |
260a9803 DH |
790 | .destructor = afs_flat_call_destructor, |
791 | }; | |
792 | ||
793 | /* | |
794 | * make a hard link | |
795 | */ | |
d2ddc776 DH |
796 | int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, |
797 | const char *name) | |
260a9803 | 798 | { |
d2ddc776 | 799 | struct afs_vnode *dvnode = fc->vnode; |
260a9803 | 800 | struct afs_call *call; |
f044c884 | 801 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
802 | size_t namesz, reqsz, padsz; |
803 | __be32 *bp; | |
804 | ||
805 | _enter(""); | |
806 | ||
807 | namesz = strlen(name); | |
808 | padsz = (4 - (namesz & 3)) & 3; | |
809 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
810 | ||
f044c884 | 811 | call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); |
260a9803 DH |
812 | if (!call) |
813 | return -ENOMEM; | |
814 | ||
d2ddc776 | 815 | call->key = fc->key; |
97e3043a DH |
816 | call->reply[0] = dvnode; |
817 | call->reply[1] = vnode; | |
260a9803 DH |
818 | |
819 | /* marshall the parameters */ | |
820 | bp = call->request; | |
821 | *bp++ = htonl(FSLINK); | |
822 | *bp++ = htonl(dvnode->fid.vid); | |
823 | *bp++ = htonl(dvnode->fid.vnode); | |
824 | *bp++ = htonl(dvnode->fid.unique); | |
825 | *bp++ = htonl(namesz); | |
826 | memcpy(bp, name, namesz); | |
827 | bp = (void *) bp + namesz; | |
828 | if (padsz > 0) { | |
829 | memset(bp, 0, padsz); | |
830 | bp = (void *) bp + padsz; | |
831 | } | |
832 | *bp++ = htonl(vnode->fid.vid); | |
833 | *bp++ = htonl(vnode->fid.vnode); | |
834 | *bp++ = htonl(vnode->fid.unique); | |
835 | ||
d2ddc776 DH |
836 | afs_use_fs_server(call, fc->cbi); |
837 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
260a9803 DH |
838 | } |
839 | ||
840 | /* | |
841 | * deliver reply data to an FS.Symlink | |
842 | */ | |
d001648e | 843 | static int afs_deliver_fs_symlink(struct afs_call *call) |
260a9803 | 844 | { |
97e3043a | 845 | struct afs_vnode *vnode = call->reply[0]; |
260a9803 | 846 | const __be32 *bp; |
372ee163 | 847 | int ret; |
260a9803 | 848 | |
d001648e | 849 | _enter("{%u}", call->unmarshall); |
260a9803 | 850 | |
d001648e | 851 | ret = afs_transfer_reply(call); |
372ee163 DH |
852 | if (ret < 0) |
853 | return ret; | |
260a9803 DH |
854 | |
855 | /* unmarshall the reply once we've received all of it */ | |
856 | bp = call->buffer; | |
97e3043a DH |
857 | xdr_decode_AFSFid(&bp, call->reply[1]); |
858 | xdr_decode_AFSFetchStatus(&bp, call->reply[2], NULL, NULL); | |
31143d5d | 859 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
97e3043a | 860 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
861 | |
862 | _leave(" = 0 [done]"); | |
863 | return 0; | |
864 | } | |
865 | ||
866 | /* | |
867 | * FS.Symlink operation type | |
868 | */ | |
869 | static const struct afs_call_type afs_RXFSSymlink = { | |
870 | .name = "FS.Symlink", | |
871 | .deliver = afs_deliver_fs_symlink, | |
260a9803 DH |
872 | .destructor = afs_flat_call_destructor, |
873 | }; | |
874 | ||
875 | /* | |
876 | * create a symbolic link | |
877 | */ | |
8b2a464c | 878 | int afs_fs_symlink(struct afs_fs_cursor *fc, |
260a9803 DH |
879 | const char *name, |
880 | const char *contents, | |
881 | struct afs_fid *newfid, | |
d2ddc776 | 882 | struct afs_file_status *newstatus) |
260a9803 | 883 | { |
d2ddc776 | 884 | struct afs_vnode *vnode = fc->vnode; |
260a9803 | 885 | struct afs_call *call; |
f044c884 | 886 | struct afs_net *net = afs_v2net(vnode); |
260a9803 DH |
887 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; |
888 | __be32 *bp; | |
889 | ||
890 | _enter(""); | |
891 | ||
892 | namesz = strlen(name); | |
893 | padsz = (4 - (namesz & 3)) & 3; | |
894 | ||
895 | c_namesz = strlen(contents); | |
896 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
897 | ||
898 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
899 | ||
f044c884 | 900 | call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz, |
260a9803 DH |
901 | (3 + 21 + 21 + 6) * 4); |
902 | if (!call) | |
903 | return -ENOMEM; | |
904 | ||
d2ddc776 | 905 | call->key = fc->key; |
97e3043a DH |
906 | call->reply[0] = vnode; |
907 | call->reply[1] = newfid; | |
908 | call->reply[2] = newstatus; | |
260a9803 DH |
909 | |
910 | /* marshall the parameters */ | |
911 | bp = call->request; | |
912 | *bp++ = htonl(FSSYMLINK); | |
913 | *bp++ = htonl(vnode->fid.vid); | |
914 | *bp++ = htonl(vnode->fid.vnode); | |
915 | *bp++ = htonl(vnode->fid.unique); | |
916 | *bp++ = htonl(namesz); | |
917 | memcpy(bp, name, namesz); | |
918 | bp = (void *) bp + namesz; | |
919 | if (padsz > 0) { | |
920 | memset(bp, 0, padsz); | |
921 | bp = (void *) bp + padsz; | |
922 | } | |
923 | *bp++ = htonl(c_namesz); | |
924 | memcpy(bp, contents, c_namesz); | |
925 | bp = (void *) bp + c_namesz; | |
926 | if (c_padsz > 0) { | |
927 | memset(bp, 0, c_padsz); | |
928 | bp = (void *) bp + c_padsz; | |
929 | } | |
ab94f5d0 MD |
930 | *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
931 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
260a9803 DH |
932 | *bp++ = 0; /* owner */ |
933 | *bp++ = 0; /* group */ | |
934 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
935 | *bp++ = 0; /* segment size */ | |
936 | ||
d2ddc776 DH |
937 | afs_use_fs_server(call, fc->cbi); |
938 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
260a9803 DH |
939 | } |
940 | ||
941 | /* | |
942 | * deliver reply data to an FS.Rename | |
943 | */ | |
d001648e | 944 | static int afs_deliver_fs_rename(struct afs_call *call) |
260a9803 | 945 | { |
97e3043a | 946 | struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1]; |
260a9803 | 947 | const __be32 *bp; |
372ee163 | 948 | int ret; |
260a9803 | 949 | |
d001648e | 950 | _enter("{%u}", call->unmarshall); |
260a9803 | 951 | |
d001648e | 952 | ret = afs_transfer_reply(call); |
372ee163 DH |
953 | if (ret < 0) |
954 | return ret; | |
260a9803 DH |
955 | |
956 | /* unmarshall the reply once we've received all of it */ | |
957 | bp = call->buffer; | |
31143d5d | 958 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
260a9803 | 959 | if (new_dvnode != orig_dvnode) |
31143d5d DH |
960 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
961 | NULL); | |
97e3043a | 962 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
260a9803 DH |
963 | |
964 | _leave(" = 0 [done]"); | |
965 | return 0; | |
966 | } | |
967 | ||
968 | /* | |
969 | * FS.Rename operation type | |
970 | */ | |
971 | static const struct afs_call_type afs_RXFSRename = { | |
972 | .name = "FS.Rename", | |
973 | .deliver = afs_deliver_fs_rename, | |
260a9803 DH |
974 | .destructor = afs_flat_call_destructor, |
975 | }; | |
976 | ||
977 | /* | |
978 | * create a symbolic link | |
979 | */ | |
8b2a464c | 980 | int afs_fs_rename(struct afs_fs_cursor *fc, |
260a9803 DH |
981 | const char *orig_name, |
982 | struct afs_vnode *new_dvnode, | |
d2ddc776 | 983 | const char *new_name) |
260a9803 | 984 | { |
d2ddc776 | 985 | struct afs_vnode *orig_dvnode = fc->vnode; |
260a9803 | 986 | struct afs_call *call; |
f044c884 | 987 | struct afs_net *net = afs_v2net(orig_dvnode); |
260a9803 DH |
988 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; |
989 | __be32 *bp; | |
990 | ||
991 | _enter(""); | |
992 | ||
993 | o_namesz = strlen(orig_name); | |
994 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
995 | ||
996 | n_namesz = strlen(new_name); | |
997 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
998 | ||
999 | reqsz = (4 * 4) + | |
1000 | 4 + o_namesz + o_padsz + | |
1001 | (3 * 4) + | |
1002 | 4 + n_namesz + n_padsz; | |
1003 | ||
f044c884 | 1004 | call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); |
260a9803 DH |
1005 | if (!call) |
1006 | return -ENOMEM; | |
1007 | ||
d2ddc776 | 1008 | call->key = fc->key; |
97e3043a DH |
1009 | call->reply[0] = orig_dvnode; |
1010 | call->reply[1] = new_dvnode; | |
260a9803 DH |
1011 | |
1012 | /* marshall the parameters */ | |
1013 | bp = call->request; | |
1014 | *bp++ = htonl(FSRENAME); | |
1015 | *bp++ = htonl(orig_dvnode->fid.vid); | |
1016 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
1017 | *bp++ = htonl(orig_dvnode->fid.unique); | |
1018 | *bp++ = htonl(o_namesz); | |
1019 | memcpy(bp, orig_name, o_namesz); | |
1020 | bp = (void *) bp + o_namesz; | |
1021 | if (o_padsz > 0) { | |
1022 | memset(bp, 0, o_padsz); | |
1023 | bp = (void *) bp + o_padsz; | |
1024 | } | |
1025 | ||
1026 | *bp++ = htonl(new_dvnode->fid.vid); | |
1027 | *bp++ = htonl(new_dvnode->fid.vnode); | |
1028 | *bp++ = htonl(new_dvnode->fid.unique); | |
1029 | *bp++ = htonl(n_namesz); | |
1030 | memcpy(bp, new_name, n_namesz); | |
1031 | bp = (void *) bp + n_namesz; | |
1032 | if (n_padsz > 0) { | |
1033 | memset(bp, 0, n_padsz); | |
1034 | bp = (void *) bp + n_padsz; | |
1035 | } | |
1036 | ||
d2ddc776 DH |
1037 | afs_use_fs_server(call, fc->cbi); |
1038 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
260a9803 | 1039 | } |
31143d5d DH |
1040 | |
1041 | /* | |
1042 | * deliver reply data to an FS.StoreData | |
1043 | */ | |
d001648e | 1044 | static int afs_deliver_fs_store_data(struct afs_call *call) |
31143d5d | 1045 | { |
97e3043a | 1046 | struct afs_vnode *vnode = call->reply[0]; |
31143d5d | 1047 | const __be32 *bp; |
372ee163 | 1048 | int ret; |
31143d5d | 1049 | |
d001648e | 1050 | _enter(""); |
31143d5d | 1051 | |
d001648e | 1052 | ret = afs_transfer_reply(call); |
372ee163 DH |
1053 | if (ret < 0) |
1054 | return ret; | |
31143d5d DH |
1055 | |
1056 | /* unmarshall the reply once we've received all of it */ | |
1057 | bp = call->buffer; | |
1058 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, | |
1059 | &call->store_version); | |
97e3043a | 1060 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
31143d5d DH |
1061 | |
1062 | afs_pages_written_back(vnode, call); | |
1063 | ||
1064 | _leave(" = 0 [done]"); | |
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | /* | |
1069 | * FS.StoreData operation type | |
1070 | */ | |
1071 | static const struct afs_call_type afs_RXFSStoreData = { | |
1072 | .name = "FS.StoreData", | |
1073 | .deliver = afs_deliver_fs_store_data, | |
31143d5d DH |
1074 | .destructor = afs_flat_call_destructor, |
1075 | }; | |
1076 | ||
b9b1f8d5 DH |
1077 | static const struct afs_call_type afs_RXFSStoreData64 = { |
1078 | .name = "FS.StoreData64", | |
1079 | .deliver = afs_deliver_fs_store_data, | |
b9b1f8d5 DH |
1080 | .destructor = afs_flat_call_destructor, |
1081 | }; | |
1082 | ||
1083 | /* | |
1084 | * store a set of pages to a very large file | |
1085 | */ | |
8b2a464c | 1086 | static int afs_fs_store_data64(struct afs_fs_cursor *fc, |
b9b1f8d5 DH |
1087 | struct afs_writeback *wb, |
1088 | pgoff_t first, pgoff_t last, | |
1089 | unsigned offset, unsigned to, | |
d2ddc776 | 1090 | loff_t size, loff_t pos, loff_t i_size) |
b9b1f8d5 DH |
1091 | { |
1092 | struct afs_vnode *vnode = wb->vnode; | |
1093 | struct afs_call *call; | |
f044c884 | 1094 | struct afs_net *net = afs_v2net(vnode); |
b9b1f8d5 DH |
1095 | __be32 *bp; |
1096 | ||
1097 | _enter(",%x,{%x:%u},,", | |
1098 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1099 | ||
f044c884 | 1100 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData64, |
b9b1f8d5 DH |
1101 | (4 + 6 + 3 * 2) * 4, |
1102 | (21 + 6) * 4); | |
1103 | if (!call) | |
1104 | return -ENOMEM; | |
1105 | ||
1106 | call->wb = wb; | |
1107 | call->key = wb->key; | |
97e3043a | 1108 | call->reply[0] = vnode; |
b9b1f8d5 DH |
1109 | call->mapping = vnode->vfs_inode.i_mapping; |
1110 | call->first = first; | |
1111 | call->last = last; | |
1112 | call->first_offset = offset; | |
1113 | call->last_to = to; | |
1114 | call->send_pages = true; | |
1115 | call->store_version = vnode->status.data_version + 1; | |
1116 | ||
1117 | /* marshall the parameters */ | |
1118 | bp = call->request; | |
1119 | *bp++ = htonl(FSSTOREDATA64); | |
1120 | *bp++ = htonl(vnode->fid.vid); | |
1121 | *bp++ = htonl(vnode->fid.vnode); | |
1122 | *bp++ = htonl(vnode->fid.unique); | |
1123 | ||
ab94f5d0 MD |
1124 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1125 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
b9b1f8d5 DH |
1126 | *bp++ = 0; /* owner */ |
1127 | *bp++ = 0; /* group */ | |
1128 | *bp++ = 0; /* unix mode */ | |
1129 | *bp++ = 0; /* segment size */ | |
1130 | ||
1131 | *bp++ = htonl(pos >> 32); | |
1132 | *bp++ = htonl((u32) pos); | |
1133 | *bp++ = htonl(size >> 32); | |
1134 | *bp++ = htonl((u32) size); | |
1135 | *bp++ = htonl(i_size >> 32); | |
1136 | *bp++ = htonl((u32) i_size); | |
1137 | ||
d2ddc776 | 1138 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); |
b9b1f8d5 DH |
1139 | } |
1140 | ||
31143d5d DH |
1141 | /* |
1142 | * store a set of pages | |
1143 | */ | |
8b2a464c | 1144 | int afs_fs_store_data(struct afs_fs_cursor *fc, struct afs_writeback *wb, |
31143d5d | 1145 | pgoff_t first, pgoff_t last, |
d2ddc776 | 1146 | unsigned offset, unsigned to) |
31143d5d DH |
1147 | { |
1148 | struct afs_vnode *vnode = wb->vnode; | |
1149 | struct afs_call *call; | |
f044c884 | 1150 | struct afs_net *net = afs_v2net(vnode); |
31143d5d DH |
1151 | loff_t size, pos, i_size; |
1152 | __be32 *bp; | |
1153 | ||
1154 | _enter(",%x,{%x:%u},,", | |
1155 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); | |
1156 | ||
146a1192 | 1157 | size = (loff_t)to - (loff_t)offset; |
31143d5d DH |
1158 | if (first != last) |
1159 | size += (loff_t)(last - first) << PAGE_SHIFT; | |
1160 | pos = (loff_t)first << PAGE_SHIFT; | |
1161 | pos += offset; | |
1162 | ||
1163 | i_size = i_size_read(&vnode->vfs_inode); | |
1164 | if (pos + size > i_size) | |
1165 | i_size = size + pos; | |
1166 | ||
1167 | _debug("size %llx, at %llx, i_size %llx", | |
1168 | (unsigned long long) size, (unsigned long long) pos, | |
1169 | (unsigned long long) i_size); | |
1170 | ||
b9b1f8d5 | 1171 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
8b2a464c | 1172 | return afs_fs_store_data64(fc, wb, first, last, offset, to, |
d2ddc776 | 1173 | size, pos, i_size); |
31143d5d | 1174 | |
f044c884 | 1175 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData, |
31143d5d DH |
1176 | (4 + 6 + 3) * 4, |
1177 | (21 + 6) * 4); | |
1178 | if (!call) | |
1179 | return -ENOMEM; | |
1180 | ||
1181 | call->wb = wb; | |
1182 | call->key = wb->key; | |
97e3043a | 1183 | call->reply[0] = vnode; |
31143d5d DH |
1184 | call->mapping = vnode->vfs_inode.i_mapping; |
1185 | call->first = first; | |
1186 | call->last = last; | |
1187 | call->first_offset = offset; | |
1188 | call->last_to = to; | |
1189 | call->send_pages = true; | |
1190 | call->store_version = vnode->status.data_version + 1; | |
1191 | ||
1192 | /* marshall the parameters */ | |
1193 | bp = call->request; | |
1194 | *bp++ = htonl(FSSTOREDATA); | |
1195 | *bp++ = htonl(vnode->fid.vid); | |
1196 | *bp++ = htonl(vnode->fid.vnode); | |
1197 | *bp++ = htonl(vnode->fid.unique); | |
1198 | ||
ab94f5d0 MD |
1199 | *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
1200 | *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ | |
31143d5d DH |
1201 | *bp++ = 0; /* owner */ |
1202 | *bp++ = 0; /* group */ | |
1203 | *bp++ = 0; /* unix mode */ | |
1204 | *bp++ = 0; /* segment size */ | |
1205 | ||
1206 | *bp++ = htonl(pos); | |
1207 | *bp++ = htonl(size); | |
1208 | *bp++ = htonl(i_size); | |
1209 | ||
d2ddc776 DH |
1210 | afs_use_fs_server(call, fc->cbi); |
1211 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
31143d5d DH |
1212 | } |
1213 | ||
1214 | /* | |
1215 | * deliver reply data to an FS.StoreStatus | |
1216 | */ | |
d001648e | 1217 | static int afs_deliver_fs_store_status(struct afs_call *call) |
31143d5d DH |
1218 | { |
1219 | afs_dataversion_t *store_version; | |
97e3043a | 1220 | struct afs_vnode *vnode = call->reply[0]; |
31143d5d | 1221 | const __be32 *bp; |
372ee163 | 1222 | int ret; |
31143d5d | 1223 | |
d001648e | 1224 | _enter(""); |
31143d5d | 1225 | |
d001648e | 1226 | ret = afs_transfer_reply(call); |
372ee163 DH |
1227 | if (ret < 0) |
1228 | return ret; | |
31143d5d DH |
1229 | |
1230 | /* unmarshall the reply once we've received all of it */ | |
1231 | store_version = NULL; | |
1232 | if (call->operation_ID == FSSTOREDATA) | |
1233 | store_version = &call->store_version; | |
1234 | ||
1235 | bp = call->buffer; | |
1236 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); | |
97e3043a | 1237 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
31143d5d DH |
1238 | |
1239 | _leave(" = 0 [done]"); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * FS.StoreStatus operation type | |
1245 | */ | |
1246 | static const struct afs_call_type afs_RXFSStoreStatus = { | |
1247 | .name = "FS.StoreStatus", | |
1248 | .deliver = afs_deliver_fs_store_status, | |
31143d5d DH |
1249 | .destructor = afs_flat_call_destructor, |
1250 | }; | |
1251 | ||
1252 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { | |
1253 | .name = "FS.StoreData", | |
1254 | .deliver = afs_deliver_fs_store_status, | |
31143d5d DH |
1255 | .destructor = afs_flat_call_destructor, |
1256 | }; | |
1257 | ||
b9b1f8d5 DH |
1258 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
1259 | .name = "FS.StoreData64", | |
1260 | .deliver = afs_deliver_fs_store_status, | |
b9b1f8d5 DH |
1261 | .destructor = afs_flat_call_destructor, |
1262 | }; | |
1263 | ||
1264 | /* | |
1265 | * set the attributes on a very large file, using FS.StoreData rather than | |
1266 | * FS.StoreStatus so as to alter the file size also | |
1267 | */ | |
d2ddc776 | 1268 | static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr) |
b9b1f8d5 | 1269 | { |
d2ddc776 | 1270 | struct afs_vnode *vnode = fc->vnode; |
b9b1f8d5 | 1271 | struct afs_call *call; |
f044c884 | 1272 | struct afs_net *net = afs_v2net(vnode); |
b9b1f8d5 DH |
1273 | __be32 *bp; |
1274 | ||
1275 | _enter(",%x,{%x:%u},,", | |
d2ddc776 | 1276 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
b9b1f8d5 DH |
1277 | |
1278 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
1279 | ||
f044c884 | 1280 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status, |
b9b1f8d5 DH |
1281 | (4 + 6 + 3 * 2) * 4, |
1282 | (21 + 6) * 4); | |
1283 | if (!call) | |
1284 | return -ENOMEM; | |
1285 | ||
d2ddc776 | 1286 | call->key = fc->key; |
97e3043a | 1287 | call->reply[0] = vnode; |
b9b1f8d5 DH |
1288 | call->store_version = vnode->status.data_version + 1; |
1289 | call->operation_ID = FSSTOREDATA; | |
1290 | ||
1291 | /* marshall the parameters */ | |
1292 | bp = call->request; | |
1293 | *bp++ = htonl(FSSTOREDATA64); | |
1294 | *bp++ = htonl(vnode->fid.vid); | |
1295 | *bp++ = htonl(vnode->fid.vnode); | |
1296 | *bp++ = htonl(vnode->fid.unique); | |
1297 | ||
1298 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1299 | ||
1300 | *bp++ = 0; /* position of start of write */ | |
1301 | *bp++ = 0; | |
1302 | *bp++ = 0; /* size of write */ | |
1303 | *bp++ = 0; | |
1304 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ | |
1305 | *bp++ = htonl((u32) attr->ia_size); | |
1306 | ||
d2ddc776 DH |
1307 | afs_use_fs_server(call, fc->cbi); |
1308 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
b9b1f8d5 DH |
1309 | } |
1310 | ||
31143d5d DH |
1311 | /* |
1312 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus | |
1313 | * so as to alter the file size also | |
1314 | */ | |
d2ddc776 | 1315 | static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) |
31143d5d | 1316 | { |
d2ddc776 | 1317 | struct afs_vnode *vnode = fc->vnode; |
31143d5d | 1318 | struct afs_call *call; |
f044c884 | 1319 | struct afs_net *net = afs_v2net(vnode); |
31143d5d DH |
1320 | __be32 *bp; |
1321 | ||
1322 | _enter(",%x,{%x:%u},,", | |
d2ddc776 | 1323 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
31143d5d DH |
1324 | |
1325 | ASSERT(attr->ia_valid & ATTR_SIZE); | |
b9b1f8d5 | 1326 | if (attr->ia_size >> 32) |
d2ddc776 | 1327 | return afs_fs_setattr_size64(fc, attr); |
31143d5d | 1328 | |
f044c884 | 1329 | call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status, |
31143d5d DH |
1330 | (4 + 6 + 3) * 4, |
1331 | (21 + 6) * 4); | |
1332 | if (!call) | |
1333 | return -ENOMEM; | |
1334 | ||
d2ddc776 | 1335 | call->key = fc->key; |
97e3043a | 1336 | call->reply[0] = vnode; |
31143d5d DH |
1337 | call->store_version = vnode->status.data_version + 1; |
1338 | call->operation_ID = FSSTOREDATA; | |
1339 | ||
1340 | /* marshall the parameters */ | |
1341 | bp = call->request; | |
1342 | *bp++ = htonl(FSSTOREDATA); | |
1343 | *bp++ = htonl(vnode->fid.vid); | |
1344 | *bp++ = htonl(vnode->fid.vnode); | |
1345 | *bp++ = htonl(vnode->fid.unique); | |
1346 | ||
1347 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1348 | ||
1349 | *bp++ = 0; /* position of start of write */ | |
1350 | *bp++ = 0; /* size of write */ | |
1351 | *bp++ = htonl(attr->ia_size); /* new file length */ | |
1352 | ||
d2ddc776 DH |
1353 | afs_use_fs_server(call, fc->cbi); |
1354 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
31143d5d DH |
1355 | } |
1356 | ||
1357 | /* | |
1358 | * set the attributes on a file, using FS.StoreData if there's a change in file | |
1359 | * size, and FS.StoreStatus otherwise | |
1360 | */ | |
d2ddc776 | 1361 | int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) |
31143d5d | 1362 | { |
d2ddc776 | 1363 | struct afs_vnode *vnode = fc->vnode; |
31143d5d | 1364 | struct afs_call *call; |
f044c884 | 1365 | struct afs_net *net = afs_v2net(vnode); |
31143d5d DH |
1366 | __be32 *bp; |
1367 | ||
1368 | if (attr->ia_valid & ATTR_SIZE) | |
d2ddc776 | 1369 | return afs_fs_setattr_size(fc, attr); |
31143d5d DH |
1370 | |
1371 | _enter(",%x,{%x:%u},,", | |
d2ddc776 | 1372 | key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
31143d5d | 1373 | |
f044c884 | 1374 | call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus, |
31143d5d DH |
1375 | (4 + 6) * 4, |
1376 | (21 + 6) * 4); | |
1377 | if (!call) | |
1378 | return -ENOMEM; | |
1379 | ||
d2ddc776 | 1380 | call->key = fc->key; |
97e3043a | 1381 | call->reply[0] = vnode; |
31143d5d DH |
1382 | call->operation_ID = FSSTORESTATUS; |
1383 | ||
1384 | /* marshall the parameters */ | |
1385 | bp = call->request; | |
1386 | *bp++ = htonl(FSSTORESTATUS); | |
1387 | *bp++ = htonl(vnode->fid.vid); | |
1388 | *bp++ = htonl(vnode->fid.vnode); | |
1389 | *bp++ = htonl(vnode->fid.unique); | |
1390 | ||
1391 | xdr_encode_AFS_StoreStatus(&bp, attr); | |
1392 | ||
d2ddc776 DH |
1393 | afs_use_fs_server(call, fc->cbi); |
1394 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
31143d5d | 1395 | } |
45222b9e DH |
1396 | |
1397 | /* | |
1398 | * deliver reply data to an FS.GetVolumeStatus | |
1399 | */ | |
d001648e | 1400 | static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
45222b9e DH |
1401 | { |
1402 | const __be32 *bp; | |
1403 | char *p; | |
1404 | int ret; | |
1405 | ||
d001648e | 1406 | _enter("{%u}", call->unmarshall); |
45222b9e DH |
1407 | |
1408 | switch (call->unmarshall) { | |
1409 | case 0: | |
1410 | call->offset = 0; | |
1411 | call->unmarshall++; | |
1412 | ||
1413 | /* extract the returned status record */ | |
1414 | case 1: | |
1415 | _debug("extract status"); | |
d001648e DH |
1416 | ret = afs_extract_data(call, call->buffer, |
1417 | 12 * 4, true); | |
372ee163 DH |
1418 | if (ret < 0) |
1419 | return ret; | |
45222b9e DH |
1420 | |
1421 | bp = call->buffer; | |
97e3043a | 1422 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]); |
45222b9e DH |
1423 | call->offset = 0; |
1424 | call->unmarshall++; | |
1425 | ||
1426 | /* extract the volume name length */ | |
1427 | case 2: | |
d001648e | 1428 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1429 | if (ret < 0) |
1430 | return ret; | |
45222b9e DH |
1431 | |
1432 | call->count = ntohl(call->tmp); | |
1433 | _debug("volname length: %u", call->count); | |
1434 | if (call->count >= AFSNAMEMAX) | |
1435 | return -EBADMSG; | |
1436 | call->offset = 0; | |
1437 | call->unmarshall++; | |
1438 | ||
1439 | /* extract the volume name */ | |
1440 | case 3: | |
1441 | _debug("extract volname"); | |
1442 | if (call->count > 0) { | |
97e3043a | 1443 | ret = afs_extract_data(call, call->reply[2], |
d001648e | 1444 | call->count, true); |
372ee163 DH |
1445 | if (ret < 0) |
1446 | return ret; | |
45222b9e DH |
1447 | } |
1448 | ||
97e3043a | 1449 | p = call->reply[2]; |
45222b9e DH |
1450 | p[call->count] = 0; |
1451 | _debug("volname '%s'", p); | |
1452 | ||
1453 | call->offset = 0; | |
1454 | call->unmarshall++; | |
1455 | ||
1456 | /* extract the volume name padding */ | |
1457 | if ((call->count & 3) == 0) { | |
1458 | call->unmarshall++; | |
1459 | goto no_volname_padding; | |
1460 | } | |
1461 | call->count = 4 - (call->count & 3); | |
1462 | ||
1463 | case 4: | |
d001648e DH |
1464 | ret = afs_extract_data(call, call->buffer, |
1465 | call->count, true); | |
372ee163 DH |
1466 | if (ret < 0) |
1467 | return ret; | |
45222b9e DH |
1468 | |
1469 | call->offset = 0; | |
1470 | call->unmarshall++; | |
1471 | no_volname_padding: | |
1472 | ||
1473 | /* extract the offline message length */ | |
1474 | case 5: | |
d001648e | 1475 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1476 | if (ret < 0) |
1477 | return ret; | |
45222b9e DH |
1478 | |
1479 | call->count = ntohl(call->tmp); | |
1480 | _debug("offline msg length: %u", call->count); | |
1481 | if (call->count >= AFSNAMEMAX) | |
1482 | return -EBADMSG; | |
1483 | call->offset = 0; | |
1484 | call->unmarshall++; | |
1485 | ||
1486 | /* extract the offline message */ | |
1487 | case 6: | |
1488 | _debug("extract offline"); | |
1489 | if (call->count > 0) { | |
97e3043a | 1490 | ret = afs_extract_data(call, call->reply[2], |
d001648e | 1491 | call->count, true); |
372ee163 DH |
1492 | if (ret < 0) |
1493 | return ret; | |
45222b9e DH |
1494 | } |
1495 | ||
97e3043a | 1496 | p = call->reply[2]; |
45222b9e DH |
1497 | p[call->count] = 0; |
1498 | _debug("offline '%s'", p); | |
1499 | ||
1500 | call->offset = 0; | |
1501 | call->unmarshall++; | |
1502 | ||
1503 | /* extract the offline message padding */ | |
1504 | if ((call->count & 3) == 0) { | |
1505 | call->unmarshall++; | |
1506 | goto no_offline_padding; | |
1507 | } | |
1508 | call->count = 4 - (call->count & 3); | |
1509 | ||
1510 | case 7: | |
d001648e DH |
1511 | ret = afs_extract_data(call, call->buffer, |
1512 | call->count, true); | |
372ee163 DH |
1513 | if (ret < 0) |
1514 | return ret; | |
45222b9e DH |
1515 | |
1516 | call->offset = 0; | |
1517 | call->unmarshall++; | |
1518 | no_offline_padding: | |
1519 | ||
1520 | /* extract the message of the day length */ | |
1521 | case 8: | |
d001648e | 1522 | ret = afs_extract_data(call, &call->tmp, 4, true); |
372ee163 DH |
1523 | if (ret < 0) |
1524 | return ret; | |
45222b9e DH |
1525 | |
1526 | call->count = ntohl(call->tmp); | |
1527 | _debug("motd length: %u", call->count); | |
1528 | if (call->count >= AFSNAMEMAX) | |
1529 | return -EBADMSG; | |
1530 | call->offset = 0; | |
1531 | call->unmarshall++; | |
1532 | ||
1533 | /* extract the message of the day */ | |
1534 | case 9: | |
1535 | _debug("extract motd"); | |
1536 | if (call->count > 0) { | |
97e3043a | 1537 | ret = afs_extract_data(call, call->reply[2], |
d001648e | 1538 | call->count, true); |
372ee163 DH |
1539 | if (ret < 0) |
1540 | return ret; | |
45222b9e DH |
1541 | } |
1542 | ||
97e3043a | 1543 | p = call->reply[2]; |
45222b9e DH |
1544 | p[call->count] = 0; |
1545 | _debug("motd '%s'", p); | |
1546 | ||
1547 | call->offset = 0; | |
1548 | call->unmarshall++; | |
1549 | ||
1550 | /* extract the message of the day padding */ | |
d001648e | 1551 | call->count = (4 - (call->count & 3)) & 3; |
45222b9e DH |
1552 | |
1553 | case 10: | |
d001648e DH |
1554 | ret = afs_extract_data(call, call->buffer, |
1555 | call->count, false); | |
372ee163 DH |
1556 | if (ret < 0) |
1557 | return ret; | |
45222b9e DH |
1558 | |
1559 | call->offset = 0; | |
1560 | call->unmarshall++; | |
45222b9e | 1561 | case 11: |
45222b9e DH |
1562 | break; |
1563 | } | |
1564 | ||
45222b9e DH |
1565 | _leave(" = 0 [done]"); |
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | /* | |
1570 | * destroy an FS.GetVolumeStatus call | |
1571 | */ | |
1572 | static void afs_get_volume_status_call_destructor(struct afs_call *call) | |
1573 | { | |
97e3043a DH |
1574 | kfree(call->reply[2]); |
1575 | call->reply[2] = NULL; | |
45222b9e DH |
1576 | afs_flat_call_destructor(call); |
1577 | } | |
1578 | ||
1579 | /* | |
1580 | * FS.GetVolumeStatus operation type | |
1581 | */ | |
1582 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { | |
1583 | .name = "FS.GetVolumeStatus", | |
1584 | .deliver = afs_deliver_fs_get_volume_status, | |
45222b9e DH |
1585 | .destructor = afs_get_volume_status_call_destructor, |
1586 | }; | |
1587 | ||
1588 | /* | |
1589 | * fetch the status of a volume | |
1590 | */ | |
8b2a464c | 1591 | int afs_fs_get_volume_status(struct afs_fs_cursor *fc, |
d2ddc776 | 1592 | struct afs_volume_status *vs) |
45222b9e | 1593 | { |
d2ddc776 | 1594 | struct afs_vnode *vnode = fc->vnode; |
45222b9e | 1595 | struct afs_call *call; |
f044c884 | 1596 | struct afs_net *net = afs_v2net(vnode); |
45222b9e DH |
1597 | __be32 *bp; |
1598 | void *tmpbuf; | |
1599 | ||
1600 | _enter(""); | |
1601 | ||
1602 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); | |
1603 | if (!tmpbuf) | |
1604 | return -ENOMEM; | |
1605 | ||
f044c884 | 1606 | call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); |
45222b9e DH |
1607 | if (!call) { |
1608 | kfree(tmpbuf); | |
1609 | return -ENOMEM; | |
1610 | } | |
1611 | ||
d2ddc776 | 1612 | call->key = fc->key; |
97e3043a DH |
1613 | call->reply[0] = vnode; |
1614 | call->reply[1] = vs; | |
1615 | call->reply[2] = tmpbuf; | |
45222b9e DH |
1616 | |
1617 | /* marshall the parameters */ | |
1618 | bp = call->request; | |
1619 | bp[0] = htonl(FSGETVOLUMESTATUS); | |
1620 | bp[1] = htonl(vnode->fid.vid); | |
1621 | ||
d2ddc776 DH |
1622 | afs_use_fs_server(call, fc->cbi); |
1623 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
45222b9e | 1624 | } |
e8d6c554 DH |
1625 | |
1626 | /* | |
1627 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock | |
1628 | */ | |
d001648e | 1629 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
e8d6c554 DH |
1630 | { |
1631 | const __be32 *bp; | |
372ee163 | 1632 | int ret; |
e8d6c554 | 1633 | |
d001648e | 1634 | _enter("{%u}", call->unmarshall); |
e8d6c554 | 1635 | |
d001648e | 1636 | ret = afs_transfer_reply(call); |
372ee163 DH |
1637 | if (ret < 0) |
1638 | return ret; | |
e8d6c554 DH |
1639 | |
1640 | /* unmarshall the reply once we've received all of it */ | |
1641 | bp = call->buffer; | |
97e3043a | 1642 | /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
e8d6c554 DH |
1643 | |
1644 | _leave(" = 0 [done]"); | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | /* | |
1649 | * FS.SetLock operation type | |
1650 | */ | |
1651 | static const struct afs_call_type afs_RXFSSetLock = { | |
1652 | .name = "FS.SetLock", | |
1653 | .deliver = afs_deliver_fs_xxxx_lock, | |
e8d6c554 DH |
1654 | .destructor = afs_flat_call_destructor, |
1655 | }; | |
1656 | ||
1657 | /* | |
1658 | * FS.ExtendLock operation type | |
1659 | */ | |
1660 | static const struct afs_call_type afs_RXFSExtendLock = { | |
1661 | .name = "FS.ExtendLock", | |
1662 | .deliver = afs_deliver_fs_xxxx_lock, | |
e8d6c554 DH |
1663 | .destructor = afs_flat_call_destructor, |
1664 | }; | |
1665 | ||
1666 | /* | |
1667 | * FS.ReleaseLock operation type | |
1668 | */ | |
1669 | static const struct afs_call_type afs_RXFSReleaseLock = { | |
1670 | .name = "FS.ReleaseLock", | |
1671 | .deliver = afs_deliver_fs_xxxx_lock, | |
e8d6c554 DH |
1672 | .destructor = afs_flat_call_destructor, |
1673 | }; | |
1674 | ||
1675 | /* | |
d2ddc776 | 1676 | * Set a lock on a file |
e8d6c554 | 1677 | */ |
d2ddc776 | 1678 | int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) |
e8d6c554 | 1679 | { |
d2ddc776 | 1680 | struct afs_vnode *vnode = fc->vnode; |
e8d6c554 | 1681 | struct afs_call *call; |
f044c884 | 1682 | struct afs_net *net = afs_v2net(vnode); |
e8d6c554 DH |
1683 | __be32 *bp; |
1684 | ||
1685 | _enter(""); | |
1686 | ||
f044c884 | 1687 | call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4); |
e8d6c554 DH |
1688 | if (!call) |
1689 | return -ENOMEM; | |
1690 | ||
d2ddc776 | 1691 | call->key = fc->key; |
97e3043a | 1692 | call->reply[0] = vnode; |
e8d6c554 DH |
1693 | |
1694 | /* marshall the parameters */ | |
1695 | bp = call->request; | |
1696 | *bp++ = htonl(FSSETLOCK); | |
1697 | *bp++ = htonl(vnode->fid.vid); | |
1698 | *bp++ = htonl(vnode->fid.vnode); | |
1699 | *bp++ = htonl(vnode->fid.unique); | |
1700 | *bp++ = htonl(type); | |
1701 | ||
d2ddc776 DH |
1702 | afs_use_fs_server(call, fc->cbi); |
1703 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
e8d6c554 DH |
1704 | } |
1705 | ||
1706 | /* | |
1707 | * extend a lock on a file | |
1708 | */ | |
d2ddc776 | 1709 | int afs_fs_extend_lock(struct afs_fs_cursor *fc) |
e8d6c554 | 1710 | { |
d2ddc776 | 1711 | struct afs_vnode *vnode = fc->vnode; |
e8d6c554 | 1712 | struct afs_call *call; |
f044c884 | 1713 | struct afs_net *net = afs_v2net(vnode); |
e8d6c554 DH |
1714 | __be32 *bp; |
1715 | ||
1716 | _enter(""); | |
1717 | ||
f044c884 | 1718 | call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4); |
e8d6c554 DH |
1719 | if (!call) |
1720 | return -ENOMEM; | |
1721 | ||
d2ddc776 | 1722 | call->key = fc->key; |
97e3043a | 1723 | call->reply[0] = vnode; |
e8d6c554 DH |
1724 | |
1725 | /* marshall the parameters */ | |
1726 | bp = call->request; | |
1727 | *bp++ = htonl(FSEXTENDLOCK); | |
1728 | *bp++ = htonl(vnode->fid.vid); | |
1729 | *bp++ = htonl(vnode->fid.vnode); | |
1730 | *bp++ = htonl(vnode->fid.unique); | |
1731 | ||
d2ddc776 DH |
1732 | afs_use_fs_server(call, fc->cbi); |
1733 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
e8d6c554 DH |
1734 | } |
1735 | ||
1736 | /* | |
1737 | * release a lock on a file | |
1738 | */ | |
d2ddc776 | 1739 | int afs_fs_release_lock(struct afs_fs_cursor *fc) |
e8d6c554 | 1740 | { |
d2ddc776 | 1741 | struct afs_vnode *vnode = fc->vnode; |
e8d6c554 | 1742 | struct afs_call *call; |
f044c884 | 1743 | struct afs_net *net = afs_v2net(vnode); |
e8d6c554 DH |
1744 | __be32 *bp; |
1745 | ||
1746 | _enter(""); | |
1747 | ||
f044c884 | 1748 | call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4); |
e8d6c554 DH |
1749 | if (!call) |
1750 | return -ENOMEM; | |
1751 | ||
d2ddc776 | 1752 | call->key = fc->key; |
97e3043a | 1753 | call->reply[0] = vnode; |
e8d6c554 DH |
1754 | |
1755 | /* marshall the parameters */ | |
1756 | bp = call->request; | |
1757 | *bp++ = htonl(FSRELEASELOCK); | |
1758 | *bp++ = htonl(vnode->fid.vid); | |
1759 | *bp++ = htonl(vnode->fid.vnode); | |
1760 | *bp++ = htonl(vnode->fid.unique); | |
1761 | ||
d2ddc776 DH |
1762 | afs_use_fs_server(call, fc->cbi); |
1763 | return afs_make_call(&fc->ac, call, GFP_NOFS, false); | |
c435ee34 DH |
1764 | } |
1765 | ||
1766 | /* | |
1767 | * Deliver reply data to an FS.GiveUpAllCallBacks operation. | |
1768 | */ | |
1769 | static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call) | |
1770 | { | |
1771 | return afs_transfer_reply(call); | |
1772 | } | |
1773 | ||
1774 | /* | |
1775 | * FS.GiveUpAllCallBacks operation type | |
1776 | */ | |
1777 | static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = { | |
1778 | .name = "FS.GiveUpAllCallBacks", | |
1779 | .deliver = afs_deliver_fs_give_up_all_callbacks, | |
1780 | .destructor = afs_flat_call_destructor, | |
1781 | }; | |
1782 | ||
1783 | /* | |
1784 | * Flush all the callbacks we have on a server. | |
1785 | */ | |
d2ddc776 DH |
1786 | int afs_fs_give_up_all_callbacks(struct afs_net *net, |
1787 | struct afs_server *server, | |
8b2a464c | 1788 | struct afs_addr_cursor *ac, |
d2ddc776 | 1789 | struct key *key) |
c435ee34 DH |
1790 | { |
1791 | struct afs_call *call; | |
1792 | __be32 *bp; | |
1793 | ||
1794 | _enter(""); | |
1795 | ||
d2ddc776 | 1796 | call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0); |
c435ee34 DH |
1797 | if (!call) |
1798 | return -ENOMEM; | |
1799 | ||
1800 | call->key = key; | |
1801 | ||
1802 | /* marshall the parameters */ | |
1803 | bp = call->request; | |
1804 | *bp++ = htonl(FSGIVEUPALLCALLBACKS); | |
1805 | ||
1806 | /* Can't take a ref on server */ | |
d2ddc776 DH |
1807 | return afs_make_call(ac, call, GFP_NOFS, false); |
1808 | } | |
1809 | ||
1810 | /* | |
1811 | * Deliver reply data to an FS.GetCapabilities operation. | |
1812 | */ | |
1813 | static int afs_deliver_fs_get_capabilities(struct afs_call *call) | |
1814 | { | |
1815 | u32 count; | |
1816 | int ret; | |
1817 | ||
1818 | _enter("{%u,%zu/%u}", call->unmarshall, call->offset, call->count); | |
1819 | ||
1820 | again: | |
1821 | switch (call->unmarshall) { | |
1822 | case 0: | |
1823 | call->offset = 0; | |
1824 | call->unmarshall++; | |
1825 | ||
1826 | /* Extract the capabilities word count */ | |
1827 | case 1: | |
1828 | ret = afs_extract_data(call, &call->tmp, | |
1829 | 1 * sizeof(__be32), | |
1830 | true); | |
1831 | if (ret < 0) | |
1832 | return ret; | |
1833 | ||
1834 | count = ntohl(call->tmp); | |
1835 | ||
1836 | call->count = count; | |
1837 | call->count2 = count; | |
1838 | call->offset = 0; | |
1839 | call->unmarshall++; | |
1840 | ||
1841 | /* Extract capabilities words */ | |
1842 | case 2: | |
1843 | count = min(call->count, 16U); | |
1844 | ret = afs_extract_data(call, call->buffer, | |
1845 | count * sizeof(__be32), | |
1846 | call->count > 16); | |
1847 | if (ret < 0) | |
1848 | return ret; | |
1849 | ||
1850 | /* TODO: Examine capabilities */ | |
1851 | ||
1852 | call->count -= count; | |
1853 | if (call->count > 0) | |
1854 | goto again; | |
1855 | call->offset = 0; | |
1856 | call->unmarshall++; | |
1857 | break; | |
1858 | } | |
1859 | ||
1860 | _leave(" = 0 [done]"); | |
1861 | return 0; | |
1862 | } | |
1863 | ||
1864 | /* | |
1865 | * FS.GetCapabilities operation type | |
1866 | */ | |
1867 | static const struct afs_call_type afs_RXFSGetCapabilities = { | |
1868 | .name = "FS.GetCapabilities", | |
1869 | .deliver = afs_deliver_fs_get_capabilities, | |
1870 | .destructor = afs_flat_call_destructor, | |
1871 | }; | |
1872 | ||
1873 | /* | |
1874 | * Probe a fileserver for the capabilities that it supports. This can | |
1875 | * return up to 196 words. | |
1876 | */ | |
1877 | int afs_fs_get_capabilities(struct afs_net *net, | |
1878 | struct afs_server *server, | |
1879 | struct afs_addr_cursor *ac, | |
1880 | struct key *key) | |
1881 | { | |
1882 | struct afs_call *call; | |
1883 | __be32 *bp; | |
1884 | ||
1885 | _enter(""); | |
1886 | ||
1887 | call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4); | |
1888 | if (!call) | |
1889 | return -ENOMEM; | |
1890 | ||
1891 | call->key = key; | |
1892 | ||
1893 | /* marshall the parameters */ | |
1894 | bp = call->request; | |
1895 | *bp++ = htonl(FSGETCAPABILITIES); | |
1896 | ||
1897 | /* Can't take a ref on server */ | |
1898 | return afs_make_call(ac, call, GFP_NOFS, false); | |
e8d6c554 | 1899 | } |