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> | |
13 | #include <linux/sched.h> | |
08e0e7c8 | 14 | #include <linux/circ_buf.h> |
1da177e4 | 15 | #include "internal.h" |
08e0e7c8 | 16 | #include "afs_fs.h" |
1da177e4 | 17 | |
260a9803 DH |
18 | /* |
19 | * decode an AFSFid block | |
20 | */ | |
21 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) | |
22 | { | |
23 | const __be32 *bp = *_bp; | |
24 | ||
25 | fid->vid = ntohl(*bp++); | |
26 | fid->vnode = ntohl(*bp++); | |
27 | fid->unique = ntohl(*bp++); | |
28 | *_bp = bp; | |
29 | } | |
30 | ||
1da177e4 | 31 | /* |
08e0e7c8 | 32 | * decode an AFSFetchStatus block |
1da177e4 | 33 | */ |
08e0e7c8 | 34 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
260a9803 | 35 | struct afs_file_status *status, |
08e0e7c8 | 36 | struct afs_vnode *vnode) |
1da177e4 | 37 | { |
08e0e7c8 DH |
38 | const __be32 *bp = *_bp; |
39 | umode_t mode; | |
260a9803 | 40 | u64 data_version, size; |
08e0e7c8 DH |
41 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
42 | ||
43 | #define EXTRACT(DST) \ | |
44 | do { \ | |
45 | u32 x = ntohl(*bp++); \ | |
46 | changed |= DST - x; \ | |
47 | DST = x; \ | |
48 | } while (0) | |
49 | ||
260a9803 DH |
50 | status->if_version = ntohl(*bp++); |
51 | EXTRACT(status->type); | |
52 | EXTRACT(status->nlink); | |
53 | size = ntohl(*bp++); | |
08e0e7c8 | 54 | data_version = ntohl(*bp++); |
260a9803 DH |
55 | EXTRACT(status->author); |
56 | EXTRACT(status->owner); | |
57 | EXTRACT(status->caller_access); /* call ticket dependent */ | |
58 | EXTRACT(status->anon_access); | |
59 | EXTRACT(status->mode); | |
60 | EXTRACT(status->parent.vnode); | |
61 | EXTRACT(status->parent.unique); | |
08e0e7c8 | 62 | bp++; /* seg size */ |
260a9803 DH |
63 | status->mtime_client = ntohl(*bp++); |
64 | status->mtime_server = ntohl(*bp++); | |
65 | EXTRACT(status->group); | |
08e0e7c8 DH |
66 | bp++; /* sync counter */ |
67 | data_version |= (u64) ntohl(*bp++) << 32; | |
260a9803 DH |
68 | bp++; /* lock count */ |
69 | size |= (u64) ntohl(*bp++) << 32; | |
70 | bp++; /* spare 4 */ | |
08e0e7c8 DH |
71 | *_bp = bp; |
72 | ||
260a9803 DH |
73 | if (size != status->size) { |
74 | status->size = size; | |
75 | changed |= true; | |
08e0e7c8 | 76 | } |
260a9803 | 77 | status->mode &= S_IALLUGO; |
08e0e7c8 DH |
78 | |
79 | _debug("vnode time %lx, %lx", | |
260a9803 DH |
80 | status->mtime_client, status->mtime_server); |
81 | ||
82 | if (vnode) { | |
83 | status->parent.vid = vnode->fid.vid; | |
84 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
85 | _debug("vnode changed"); | |
86 | i_size_write(&vnode->vfs_inode, size); | |
87 | vnode->vfs_inode.i_uid = status->owner; | |
88 | vnode->vfs_inode.i_gid = status->group; | |
89 | vnode->vfs_inode.i_version = vnode->fid.unique; | |
90 | vnode->vfs_inode.i_nlink = status->nlink; | |
91 | ||
92 | mode = vnode->vfs_inode.i_mode; | |
93 | mode &= ~S_IALLUGO; | |
94 | mode |= status->mode; | |
95 | barrier(); | |
96 | vnode->vfs_inode.i_mode = mode; | |
97 | } | |
98 | ||
99 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server; | |
100 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; | |
101 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; | |
102 | } | |
103 | ||
104 | if (status->data_version != data_version) { | |
105 | status->data_version = data_version; | |
106 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { | |
107 | _debug("vnode modified %llx on {%x:%u}", | |
ba3e0e1a DM |
108 | (unsigned long long) data_version, |
109 | vnode->fid.vid, vnode->fid.vnode); | |
260a9803 DH |
110 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
111 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); | |
112 | } | |
1da177e4 | 113 | } |
ec26815a | 114 | } |
1da177e4 | 115 | |
1da177e4 | 116 | /* |
08e0e7c8 | 117 | * decode an AFSCallBack block |
1da177e4 | 118 | */ |
08e0e7c8 | 119 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
1da177e4 | 120 | { |
08e0e7c8 | 121 | const __be32 *bp = *_bp; |
1da177e4 | 122 | |
08e0e7c8 DH |
123 | vnode->cb_version = ntohl(*bp++); |
124 | vnode->cb_expiry = ntohl(*bp++); | |
125 | vnode->cb_type = ntohl(*bp++); | |
126 | vnode->cb_expires = vnode->cb_expiry + get_seconds(); | |
127 | *_bp = bp; | |
ec26815a | 128 | } |
1da177e4 | 129 | |
260a9803 DH |
130 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
131 | struct afs_callback *cb) | |
132 | { | |
133 | const __be32 *bp = *_bp; | |
134 | ||
135 | cb->version = ntohl(*bp++); | |
136 | cb->expiry = ntohl(*bp++); | |
137 | cb->type = ntohl(*bp++); | |
138 | *_bp = bp; | |
139 | } | |
140 | ||
1da177e4 | 141 | /* |
08e0e7c8 | 142 | * decode an AFSVolSync block |
1da177e4 | 143 | */ |
08e0e7c8 DH |
144 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
145 | struct afs_volsync *volsync) | |
1da177e4 | 146 | { |
08e0e7c8 | 147 | const __be32 *bp = *_bp; |
1da177e4 | 148 | |
08e0e7c8 DH |
149 | volsync->creation = ntohl(*bp++); |
150 | bp++; /* spare2 */ | |
151 | bp++; /* spare3 */ | |
152 | bp++; /* spare4 */ | |
153 | bp++; /* spare5 */ | |
154 | bp++; /* spare6 */ | |
155 | *_bp = bp; | |
156 | } | |
1da177e4 | 157 | |
08e0e7c8 DH |
158 | /* |
159 | * deliver reply data to an FS.FetchStatus | |
160 | */ | |
161 | static int afs_deliver_fs_fetch_status(struct afs_call *call, | |
162 | struct sk_buff *skb, bool last) | |
163 | { | |
260a9803 | 164 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 | 165 | const __be32 *bp; |
1da177e4 | 166 | |
08e0e7c8 | 167 | _enter(",,%u", last); |
1da177e4 | 168 | |
08e0e7c8 DH |
169 | afs_transfer_reply(call, skb); |
170 | if (!last) | |
171 | return 0; | |
1da177e4 | 172 | |
08e0e7c8 DH |
173 | if (call->reply_size != call->reply_max) |
174 | return -EBADMSG; | |
1da177e4 | 175 | |
08e0e7c8 DH |
176 | /* unmarshall the reply once we've received all of it */ |
177 | bp = call->buffer; | |
260a9803 DH |
178 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); |
179 | xdr_decode_AFSCallBack(&bp, vnode); | |
08e0e7c8 DH |
180 | if (call->reply2) |
181 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
1da177e4 | 182 | |
08e0e7c8 DH |
183 | _leave(" = 0 [done]"); |
184 | return 0; | |
ec26815a | 185 | } |
08e0e7c8 DH |
186 | |
187 | /* | |
188 | * FS.FetchStatus operation type | |
189 | */ | |
190 | static const struct afs_call_type afs_RXFSFetchStatus = { | |
00d3b7a4 | 191 | .name = "FS.FetchStatus", |
08e0e7c8 DH |
192 | .deliver = afs_deliver_fs_fetch_status, |
193 | .abort_to_error = afs_abort_to_error, | |
194 | .destructor = afs_flat_call_destructor, | |
195 | }; | |
1da177e4 | 196 | |
1da177e4 LT |
197 | /* |
198 | * fetch the status information for a file | |
199 | */ | |
08e0e7c8 | 200 | int afs_fs_fetch_file_status(struct afs_server *server, |
00d3b7a4 | 201 | struct key *key, |
08e0e7c8 DH |
202 | struct afs_vnode *vnode, |
203 | struct afs_volsync *volsync, | |
204 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 205 | { |
08e0e7c8 | 206 | struct afs_call *call; |
1da177e4 LT |
207 | __be32 *bp; |
208 | ||
416351f2 | 209 | _enter(",%x,{%x:%u},,", |
260a9803 | 210 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
1da177e4 | 211 | |
260a9803 | 212 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
213 | if (!call) |
214 | return -ENOMEM; | |
1da177e4 | 215 | |
00d3b7a4 | 216 | call->key = key; |
08e0e7c8 DH |
217 | call->reply = vnode; |
218 | call->reply2 = volsync; | |
219 | call->service_id = FS_SERVICE; | |
220 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
221 | |
222 | /* marshall the parameters */ | |
08e0e7c8 | 223 | bp = call->request; |
1da177e4 LT |
224 | bp[0] = htonl(FSFETCHSTATUS); |
225 | bp[1] = htonl(vnode->fid.vid); | |
226 | bp[2] = htonl(vnode->fid.vnode); | |
227 | bp[3] = htonl(vnode->fid.unique); | |
228 | ||
08e0e7c8 | 229 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 230 | } |
1da177e4 | 231 | |
1da177e4 | 232 | /* |
08e0e7c8 | 233 | * deliver reply data to an FS.FetchData |
1da177e4 | 234 | */ |
08e0e7c8 DH |
235 | static int afs_deliver_fs_fetch_data(struct afs_call *call, |
236 | struct sk_buff *skb, bool last) | |
1da177e4 | 237 | { |
260a9803 | 238 | struct afs_vnode *vnode = call->reply; |
08e0e7c8 DH |
239 | const __be32 *bp; |
240 | struct page *page; | |
241 | void *buffer; | |
1da177e4 | 242 | int ret; |
1da177e4 | 243 | |
08e0e7c8 DH |
244 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
245 | ||
246 | switch (call->unmarshall) { | |
247 | case 0: | |
248 | call->offset = 0; | |
249 | call->unmarshall++; | |
250 | ||
251 | /* extract the returned data length */ | |
252 | case 1: | |
253 | _debug("extract data length"); | |
254 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); | |
255 | switch (ret) { | |
256 | case 0: break; | |
257 | case -EAGAIN: return 0; | |
258 | default: return ret; | |
259 | } | |
1da177e4 | 260 | |
08e0e7c8 DH |
261 | call->count = ntohl(call->tmp); |
262 | _debug("DATA length: %u", call->count); | |
263 | if (call->count > PAGE_SIZE) | |
264 | return -EBADMSG; | |
265 | call->offset = 0; | |
266 | call->unmarshall++; | |
267 | ||
08e0e7c8 DH |
268 | /* extract the returned data */ |
269 | case 2: | |
270 | _debug("extract data"); | |
416351f2 DH |
271 | if (call->count > 0) { |
272 | page = call->reply3; | |
273 | buffer = kmap_atomic(page, KM_USER0); | |
274 | ret = afs_extract_data(call, skb, last, buffer, | |
275 | call->count); | |
276 | kunmap_atomic(buffer, KM_USER0); | |
277 | switch (ret) { | |
278 | case 0: break; | |
279 | case -EAGAIN: return 0; | |
280 | default: return ret; | |
281 | } | |
08e0e7c8 | 282 | } |
1da177e4 | 283 | |
08e0e7c8 DH |
284 | call->offset = 0; |
285 | call->unmarshall++; | |
1da177e4 | 286 | |
08e0e7c8 DH |
287 | /* extract the metadata */ |
288 | case 3: | |
260a9803 DH |
289 | ret = afs_extract_data(call, skb, last, call->buffer, |
290 | (21 + 3 + 6) * 4); | |
08e0e7c8 DH |
291 | switch (ret) { |
292 | case 0: break; | |
293 | case -EAGAIN: return 0; | |
294 | default: return ret; | |
295 | } | |
296 | ||
297 | bp = call->buffer; | |
260a9803 DH |
298 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); |
299 | xdr_decode_AFSCallBack(&bp, vnode); | |
08e0e7c8 DH |
300 | if (call->reply2) |
301 | xdr_decode_AFSVolSync(&bp, call->reply2); | |
302 | ||
303 | call->offset = 0; | |
304 | call->unmarshall++; | |
1da177e4 | 305 | |
08e0e7c8 DH |
306 | case 4: |
307 | _debug("trailer"); | |
308 | if (skb->len != 0) | |
309 | return -EBADMSG; | |
310 | break; | |
1da177e4 LT |
311 | } |
312 | ||
08e0e7c8 DH |
313 | if (!last) |
314 | return 0; | |
315 | ||
416351f2 DH |
316 | if (call->count < PAGE_SIZE) { |
317 | _debug("clear"); | |
318 | page = call->reply3; | |
319 | buffer = kmap_atomic(page, KM_USER0); | |
320 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); | |
321 | kunmap_atomic(buffer, KM_USER0); | |
322 | } | |
323 | ||
08e0e7c8 DH |
324 | _leave(" = 0 [done]"); |
325 | return 0; | |
ec26815a | 326 | } |
1da177e4 | 327 | |
1da177e4 | 328 | /* |
08e0e7c8 | 329 | * FS.FetchData operation type |
1da177e4 | 330 | */ |
08e0e7c8 | 331 | static const struct afs_call_type afs_RXFSFetchData = { |
00d3b7a4 | 332 | .name = "FS.FetchData", |
08e0e7c8 DH |
333 | .deliver = afs_deliver_fs_fetch_data, |
334 | .abort_to_error = afs_abort_to_error, | |
335 | .destructor = afs_flat_call_destructor, | |
336 | }; | |
337 | ||
338 | /* | |
339 | * fetch data from a file | |
340 | */ | |
341 | int afs_fs_fetch_data(struct afs_server *server, | |
00d3b7a4 | 342 | struct key *key, |
08e0e7c8 DH |
343 | struct afs_vnode *vnode, |
344 | off_t offset, size_t length, | |
345 | struct page *buffer, | |
08e0e7c8 | 346 | const struct afs_wait_mode *wait_mode) |
1da177e4 | 347 | { |
08e0e7c8 | 348 | struct afs_call *call; |
1da177e4 LT |
349 | __be32 *bp; |
350 | ||
08e0e7c8 | 351 | _enter(""); |
1da177e4 | 352 | |
260a9803 | 353 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
08e0e7c8 DH |
354 | if (!call) |
355 | return -ENOMEM; | |
1da177e4 | 356 | |
00d3b7a4 | 357 | call->key = key; |
08e0e7c8 | 358 | call->reply = vnode; |
260a9803 | 359 | call->reply2 = NULL; /* volsync */ |
08e0e7c8 DH |
360 | call->reply3 = buffer; |
361 | call->service_id = FS_SERVICE; | |
362 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
363 | |
364 | /* marshall the parameters */ | |
08e0e7c8 DH |
365 | bp = call->request; |
366 | bp[0] = htonl(FSFETCHDATA); | |
367 | bp[1] = htonl(vnode->fid.vid); | |
368 | bp[2] = htonl(vnode->fid.vnode); | |
369 | bp[3] = htonl(vnode->fid.unique); | |
370 | bp[4] = htonl(offset); | |
371 | bp[5] = htonl(length); | |
1da177e4 | 372 | |
08e0e7c8 DH |
373 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
374 | } | |
1da177e4 | 375 | |
08e0e7c8 DH |
376 | /* |
377 | * deliver reply data to an FS.GiveUpCallBacks | |
378 | */ | |
379 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call, | |
380 | struct sk_buff *skb, bool last) | |
381 | { | |
382 | _enter(",{%u},%d", skb->len, last); | |
1da177e4 | 383 | |
08e0e7c8 DH |
384 | if (skb->len > 0) |
385 | return -EBADMSG; /* shouldn't be any reply data */ | |
386 | return 0; | |
ec26815a | 387 | } |
1da177e4 | 388 | |
1da177e4 | 389 | /* |
08e0e7c8 DH |
390 | * FS.GiveUpCallBacks operation type |
391 | */ | |
392 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { | |
00d3b7a4 | 393 | .name = "FS.GiveUpCallBacks", |
08e0e7c8 DH |
394 | .deliver = afs_deliver_fs_give_up_callbacks, |
395 | .abort_to_error = afs_abort_to_error, | |
396 | .destructor = afs_flat_call_destructor, | |
397 | }; | |
398 | ||
399 | /* | |
400 | * give up a set of callbacks | |
401 | * - the callbacks are held in the server->cb_break ring | |
1da177e4 | 402 | */ |
08e0e7c8 DH |
403 | int afs_fs_give_up_callbacks(struct afs_server *server, |
404 | const struct afs_wait_mode *wait_mode) | |
1da177e4 | 405 | { |
08e0e7c8 DH |
406 | struct afs_call *call; |
407 | size_t ncallbacks; | |
408 | __be32 *bp, *tp; | |
409 | int loop; | |
1da177e4 | 410 | |
08e0e7c8 DH |
411 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
412 | ARRAY_SIZE(server->cb_break)); | |
1da177e4 | 413 | |
08e0e7c8 | 414 | _enter("{%zu},", ncallbacks); |
1da177e4 | 415 | |
08e0e7c8 DH |
416 | if (ncallbacks == 0) |
417 | return 0; | |
418 | if (ncallbacks > AFSCBMAX) | |
419 | ncallbacks = AFSCBMAX; | |
1da177e4 | 420 | |
08e0e7c8 | 421 | _debug("break %zu callbacks", ncallbacks); |
1da177e4 | 422 | |
08e0e7c8 DH |
423 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
424 | 12 + ncallbacks * 6 * 4, 0); | |
425 | if (!call) | |
426 | return -ENOMEM; | |
427 | ||
428 | call->service_id = FS_SERVICE; | |
429 | call->port = htons(AFS_FS_PORT); | |
1da177e4 LT |
430 | |
431 | /* marshall the parameters */ | |
08e0e7c8 DH |
432 | bp = call->request; |
433 | tp = bp + 2 + ncallbacks * 3; | |
434 | *bp++ = htonl(FSGIVEUPCALLBACKS); | |
435 | *bp++ = htonl(ncallbacks); | |
436 | *tp++ = htonl(ncallbacks); | |
437 | ||
438 | atomic_sub(ncallbacks, &server->cb_break_n); | |
439 | for (loop = ncallbacks; loop > 0; loop--) { | |
440 | struct afs_callback *cb = | |
441 | &server->cb_break[server->cb_break_tail]; | |
442 | ||
443 | *bp++ = htonl(cb->fid.vid); | |
444 | *bp++ = htonl(cb->fid.vnode); | |
445 | *bp++ = htonl(cb->fid.unique); | |
446 | *tp++ = htonl(cb->version); | |
447 | *tp++ = htonl(cb->expiry); | |
448 | *tp++ = htonl(cb->type); | |
449 | smp_mb(); | |
450 | server->cb_break_tail = | |
451 | (server->cb_break_tail + 1) & | |
452 | (ARRAY_SIZE(server->cb_break) - 1); | |
1da177e4 LT |
453 | } |
454 | ||
08e0e7c8 DH |
455 | ASSERT(ncallbacks > 0); |
456 | wake_up_nr(&server->cb_break_waitq, ncallbacks); | |
1da177e4 | 457 | |
08e0e7c8 | 458 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
ec26815a | 459 | } |
260a9803 DH |
460 | |
461 | /* | |
462 | * deliver reply data to an FS.CreateFile or an FS.MakeDir | |
463 | */ | |
464 | static int afs_deliver_fs_create_vnode(struct afs_call *call, | |
465 | struct sk_buff *skb, bool last) | |
466 | { | |
467 | struct afs_vnode *vnode = call->reply; | |
468 | const __be32 *bp; | |
469 | ||
470 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
471 | ||
472 | afs_transfer_reply(call, skb); | |
473 | if (!last) | |
474 | return 0; | |
475 | ||
476 | if (call->reply_size != call->reply_max) | |
477 | return -EBADMSG; | |
478 | ||
479 | /* unmarshall the reply once we've received all of it */ | |
480 | bp = call->buffer; | |
481 | xdr_decode_AFSFid(&bp, call->reply2); | |
482 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL); | |
483 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); | |
484 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); | |
485 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
486 | ||
487 | _leave(" = 0 [done]"); | |
488 | return 0; | |
489 | } | |
490 | ||
491 | /* | |
492 | * FS.CreateFile and FS.MakeDir operation type | |
493 | */ | |
494 | static const struct afs_call_type afs_RXFSCreateXXXX = { | |
495 | .name = "FS.CreateXXXX", | |
496 | .deliver = afs_deliver_fs_create_vnode, | |
497 | .abort_to_error = afs_abort_to_error, | |
498 | .destructor = afs_flat_call_destructor, | |
499 | }; | |
500 | ||
501 | /* | |
502 | * create a file or make a directory | |
503 | */ | |
504 | int afs_fs_create(struct afs_server *server, | |
505 | struct key *key, | |
506 | struct afs_vnode *vnode, | |
507 | const char *name, | |
508 | umode_t mode, | |
509 | struct afs_fid *newfid, | |
510 | struct afs_file_status *newstatus, | |
511 | struct afs_callback *newcb, | |
512 | const struct afs_wait_mode *wait_mode) | |
513 | { | |
514 | struct afs_call *call; | |
515 | size_t namesz, reqsz, padsz; | |
516 | __be32 *bp; | |
517 | ||
518 | _enter(""); | |
519 | ||
520 | namesz = strlen(name); | |
521 | padsz = (4 - (namesz & 3)) & 3; | |
522 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); | |
523 | ||
524 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, | |
525 | (3 + 21 + 21 + 3 + 6) * 4); | |
526 | if (!call) | |
527 | return -ENOMEM; | |
528 | ||
529 | call->key = key; | |
530 | call->reply = vnode; | |
531 | call->reply2 = newfid; | |
532 | call->reply3 = newstatus; | |
533 | call->reply4 = newcb; | |
534 | call->service_id = FS_SERVICE; | |
535 | call->port = htons(AFS_FS_PORT); | |
536 | ||
537 | /* marshall the parameters */ | |
538 | bp = call->request; | |
539 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); | |
540 | *bp++ = htonl(vnode->fid.vid); | |
541 | *bp++ = htonl(vnode->fid.vnode); | |
542 | *bp++ = htonl(vnode->fid.unique); | |
543 | *bp++ = htonl(namesz); | |
544 | memcpy(bp, name, namesz); | |
545 | bp = (void *) bp + namesz; | |
546 | if (padsz > 0) { | |
547 | memset(bp, 0, padsz); | |
548 | bp = (void *) bp + padsz; | |
549 | } | |
550 | *bp++ = htonl(AFS_SET_MODE); | |
551 | *bp++ = 0; /* mtime */ | |
552 | *bp++ = 0; /* owner */ | |
553 | *bp++ = 0; /* group */ | |
554 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ | |
555 | *bp++ = 0; /* segment size */ | |
556 | ||
557 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
558 | } | |
559 | ||
560 | /* | |
561 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir | |
562 | */ | |
563 | static int afs_deliver_fs_remove(struct afs_call *call, | |
564 | struct sk_buff *skb, bool last) | |
565 | { | |
566 | struct afs_vnode *vnode = call->reply; | |
567 | const __be32 *bp; | |
568 | ||
569 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
570 | ||
571 | afs_transfer_reply(call, skb); | |
572 | if (!last) | |
573 | return 0; | |
574 | ||
575 | if (call->reply_size != call->reply_max) | |
576 | return -EBADMSG; | |
577 | ||
578 | /* unmarshall the reply once we've received all of it */ | |
579 | bp = call->buffer; | |
580 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); | |
581 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
582 | ||
583 | _leave(" = 0 [done]"); | |
584 | return 0; | |
585 | } | |
586 | ||
587 | /* | |
588 | * FS.RemoveDir/FS.RemoveFile operation type | |
589 | */ | |
590 | static const struct afs_call_type afs_RXFSRemoveXXXX = { | |
591 | .name = "FS.RemoveXXXX", | |
592 | .deliver = afs_deliver_fs_remove, | |
593 | .abort_to_error = afs_abort_to_error, | |
594 | .destructor = afs_flat_call_destructor, | |
595 | }; | |
596 | ||
597 | /* | |
598 | * remove a file or directory | |
599 | */ | |
600 | int afs_fs_remove(struct afs_server *server, | |
601 | struct key *key, | |
602 | struct afs_vnode *vnode, | |
603 | const char *name, | |
604 | bool isdir, | |
605 | const struct afs_wait_mode *wait_mode) | |
606 | { | |
607 | struct afs_call *call; | |
608 | size_t namesz, reqsz, padsz; | |
609 | __be32 *bp; | |
610 | ||
611 | _enter(""); | |
612 | ||
613 | namesz = strlen(name); | |
614 | padsz = (4 - (namesz & 3)) & 3; | |
615 | reqsz = (5 * 4) + namesz + padsz; | |
616 | ||
617 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); | |
618 | if (!call) | |
619 | return -ENOMEM; | |
620 | ||
621 | call->key = key; | |
622 | call->reply = vnode; | |
623 | call->service_id = FS_SERVICE; | |
624 | call->port = htons(AFS_FS_PORT); | |
625 | ||
626 | /* marshall the parameters */ | |
627 | bp = call->request; | |
628 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); | |
629 | *bp++ = htonl(vnode->fid.vid); | |
630 | *bp++ = htonl(vnode->fid.vnode); | |
631 | *bp++ = htonl(vnode->fid.unique); | |
632 | *bp++ = htonl(namesz); | |
633 | memcpy(bp, name, namesz); | |
634 | bp = (void *) bp + namesz; | |
635 | if (padsz > 0) { | |
636 | memset(bp, 0, padsz); | |
637 | bp = (void *) bp + padsz; | |
638 | } | |
639 | ||
640 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
641 | } | |
642 | ||
643 | /* | |
644 | * deliver reply data to an FS.Link | |
645 | */ | |
646 | static int afs_deliver_fs_link(struct afs_call *call, | |
647 | struct sk_buff *skb, bool last) | |
648 | { | |
649 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; | |
650 | const __be32 *bp; | |
651 | ||
652 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
653 | ||
654 | afs_transfer_reply(call, skb); | |
655 | if (!last) | |
656 | return 0; | |
657 | ||
658 | if (call->reply_size != call->reply_max) | |
659 | return -EBADMSG; | |
660 | ||
661 | /* unmarshall the reply once we've received all of it */ | |
662 | bp = call->buffer; | |
663 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); | |
664 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode); | |
665 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
666 | ||
667 | _leave(" = 0 [done]"); | |
668 | return 0; | |
669 | } | |
670 | ||
671 | /* | |
672 | * FS.Link operation type | |
673 | */ | |
674 | static const struct afs_call_type afs_RXFSLink = { | |
675 | .name = "FS.Link", | |
676 | .deliver = afs_deliver_fs_link, | |
677 | .abort_to_error = afs_abort_to_error, | |
678 | .destructor = afs_flat_call_destructor, | |
679 | }; | |
680 | ||
681 | /* | |
682 | * make a hard link | |
683 | */ | |
684 | int afs_fs_link(struct afs_server *server, | |
685 | struct key *key, | |
686 | struct afs_vnode *dvnode, | |
687 | struct afs_vnode *vnode, | |
688 | const char *name, | |
689 | const struct afs_wait_mode *wait_mode) | |
690 | { | |
691 | struct afs_call *call; | |
692 | size_t namesz, reqsz, padsz; | |
693 | __be32 *bp; | |
694 | ||
695 | _enter(""); | |
696 | ||
697 | namesz = strlen(name); | |
698 | padsz = (4 - (namesz & 3)) & 3; | |
699 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); | |
700 | ||
701 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); | |
702 | if (!call) | |
703 | return -ENOMEM; | |
704 | ||
705 | call->key = key; | |
706 | call->reply = dvnode; | |
707 | call->reply2 = vnode; | |
708 | call->service_id = FS_SERVICE; | |
709 | call->port = htons(AFS_FS_PORT); | |
710 | ||
711 | /* marshall the parameters */ | |
712 | bp = call->request; | |
713 | *bp++ = htonl(FSLINK); | |
714 | *bp++ = htonl(dvnode->fid.vid); | |
715 | *bp++ = htonl(dvnode->fid.vnode); | |
716 | *bp++ = htonl(dvnode->fid.unique); | |
717 | *bp++ = htonl(namesz); | |
718 | memcpy(bp, name, namesz); | |
719 | bp = (void *) bp + namesz; | |
720 | if (padsz > 0) { | |
721 | memset(bp, 0, padsz); | |
722 | bp = (void *) bp + padsz; | |
723 | } | |
724 | *bp++ = htonl(vnode->fid.vid); | |
725 | *bp++ = htonl(vnode->fid.vnode); | |
726 | *bp++ = htonl(vnode->fid.unique); | |
727 | ||
728 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
729 | } | |
730 | ||
731 | /* | |
732 | * deliver reply data to an FS.Symlink | |
733 | */ | |
734 | static int afs_deliver_fs_symlink(struct afs_call *call, | |
735 | struct sk_buff *skb, bool last) | |
736 | { | |
737 | struct afs_vnode *vnode = call->reply; | |
738 | const __be32 *bp; | |
739 | ||
740 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
741 | ||
742 | afs_transfer_reply(call, skb); | |
743 | if (!last) | |
744 | return 0; | |
745 | ||
746 | if (call->reply_size != call->reply_max) | |
747 | return -EBADMSG; | |
748 | ||
749 | /* unmarshall the reply once we've received all of it */ | |
750 | bp = call->buffer; | |
751 | xdr_decode_AFSFid(&bp, call->reply2); | |
752 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL); | |
753 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); | |
754 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
755 | ||
756 | _leave(" = 0 [done]"); | |
757 | return 0; | |
758 | } | |
759 | ||
760 | /* | |
761 | * FS.Symlink operation type | |
762 | */ | |
763 | static const struct afs_call_type afs_RXFSSymlink = { | |
764 | .name = "FS.Symlink", | |
765 | .deliver = afs_deliver_fs_symlink, | |
766 | .abort_to_error = afs_abort_to_error, | |
767 | .destructor = afs_flat_call_destructor, | |
768 | }; | |
769 | ||
770 | /* | |
771 | * create a symbolic link | |
772 | */ | |
773 | int afs_fs_symlink(struct afs_server *server, | |
774 | struct key *key, | |
775 | struct afs_vnode *vnode, | |
776 | const char *name, | |
777 | const char *contents, | |
778 | struct afs_fid *newfid, | |
779 | struct afs_file_status *newstatus, | |
780 | const struct afs_wait_mode *wait_mode) | |
781 | { | |
782 | struct afs_call *call; | |
783 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; | |
784 | __be32 *bp; | |
785 | ||
786 | _enter(""); | |
787 | ||
788 | namesz = strlen(name); | |
789 | padsz = (4 - (namesz & 3)) & 3; | |
790 | ||
791 | c_namesz = strlen(contents); | |
792 | c_padsz = (4 - (c_namesz & 3)) & 3; | |
793 | ||
794 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); | |
795 | ||
796 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, | |
797 | (3 + 21 + 21 + 6) * 4); | |
798 | if (!call) | |
799 | return -ENOMEM; | |
800 | ||
801 | call->key = key; | |
802 | call->reply = vnode; | |
803 | call->reply2 = newfid; | |
804 | call->reply3 = newstatus; | |
805 | call->service_id = FS_SERVICE; | |
806 | call->port = htons(AFS_FS_PORT); | |
807 | ||
808 | /* marshall the parameters */ | |
809 | bp = call->request; | |
810 | *bp++ = htonl(FSSYMLINK); | |
811 | *bp++ = htonl(vnode->fid.vid); | |
812 | *bp++ = htonl(vnode->fid.vnode); | |
813 | *bp++ = htonl(vnode->fid.unique); | |
814 | *bp++ = htonl(namesz); | |
815 | memcpy(bp, name, namesz); | |
816 | bp = (void *) bp + namesz; | |
817 | if (padsz > 0) { | |
818 | memset(bp, 0, padsz); | |
819 | bp = (void *) bp + padsz; | |
820 | } | |
821 | *bp++ = htonl(c_namesz); | |
822 | memcpy(bp, contents, c_namesz); | |
823 | bp = (void *) bp + c_namesz; | |
824 | if (c_padsz > 0) { | |
825 | memset(bp, 0, c_padsz); | |
826 | bp = (void *) bp + c_padsz; | |
827 | } | |
828 | *bp++ = htonl(AFS_SET_MODE); | |
829 | *bp++ = 0; /* mtime */ | |
830 | *bp++ = 0; /* owner */ | |
831 | *bp++ = 0; /* group */ | |
832 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ | |
833 | *bp++ = 0; /* segment size */ | |
834 | ||
835 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
836 | } | |
837 | ||
838 | /* | |
839 | * deliver reply data to an FS.Rename | |
840 | */ | |
841 | static int afs_deliver_fs_rename(struct afs_call *call, | |
842 | struct sk_buff *skb, bool last) | |
843 | { | |
844 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; | |
845 | const __be32 *bp; | |
846 | ||
847 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); | |
848 | ||
849 | afs_transfer_reply(call, skb); | |
850 | if (!last) | |
851 | return 0; | |
852 | ||
853 | if (call->reply_size != call->reply_max) | |
854 | return -EBADMSG; | |
855 | ||
856 | /* unmarshall the reply once we've received all of it */ | |
857 | bp = call->buffer; | |
858 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode); | |
859 | if (new_dvnode != orig_dvnode) | |
860 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode); | |
861 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ | |
862 | ||
863 | _leave(" = 0 [done]"); | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* | |
868 | * FS.Rename operation type | |
869 | */ | |
870 | static const struct afs_call_type afs_RXFSRename = { | |
871 | .name = "FS.Rename", | |
872 | .deliver = afs_deliver_fs_rename, | |
873 | .abort_to_error = afs_abort_to_error, | |
874 | .destructor = afs_flat_call_destructor, | |
875 | }; | |
876 | ||
877 | /* | |
878 | * create a symbolic link | |
879 | */ | |
880 | int afs_fs_rename(struct afs_server *server, | |
881 | struct key *key, | |
882 | struct afs_vnode *orig_dvnode, | |
883 | const char *orig_name, | |
884 | struct afs_vnode *new_dvnode, | |
885 | const char *new_name, | |
886 | const struct afs_wait_mode *wait_mode) | |
887 | { | |
888 | struct afs_call *call; | |
889 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; | |
890 | __be32 *bp; | |
891 | ||
892 | _enter(""); | |
893 | ||
894 | o_namesz = strlen(orig_name); | |
895 | o_padsz = (4 - (o_namesz & 3)) & 3; | |
896 | ||
897 | n_namesz = strlen(new_name); | |
898 | n_padsz = (4 - (n_namesz & 3)) & 3; | |
899 | ||
900 | reqsz = (4 * 4) + | |
901 | 4 + o_namesz + o_padsz + | |
902 | (3 * 4) + | |
903 | 4 + n_namesz + n_padsz; | |
904 | ||
905 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); | |
906 | if (!call) | |
907 | return -ENOMEM; | |
908 | ||
909 | call->key = key; | |
910 | call->reply = orig_dvnode; | |
911 | call->reply2 = new_dvnode; | |
912 | call->service_id = FS_SERVICE; | |
913 | call->port = htons(AFS_FS_PORT); | |
914 | ||
915 | /* marshall the parameters */ | |
916 | bp = call->request; | |
917 | *bp++ = htonl(FSRENAME); | |
918 | *bp++ = htonl(orig_dvnode->fid.vid); | |
919 | *bp++ = htonl(orig_dvnode->fid.vnode); | |
920 | *bp++ = htonl(orig_dvnode->fid.unique); | |
921 | *bp++ = htonl(o_namesz); | |
922 | memcpy(bp, orig_name, o_namesz); | |
923 | bp = (void *) bp + o_namesz; | |
924 | if (o_padsz > 0) { | |
925 | memset(bp, 0, o_padsz); | |
926 | bp = (void *) bp + o_padsz; | |
927 | } | |
928 | ||
929 | *bp++ = htonl(new_dvnode->fid.vid); | |
930 | *bp++ = htonl(new_dvnode->fid.vnode); | |
931 | *bp++ = htonl(new_dvnode->fid.unique); | |
932 | *bp++ = htonl(n_namesz); | |
933 | memcpy(bp, new_name, n_namesz); | |
934 | bp = (void *) bp + n_namesz; | |
935 | if (n_padsz > 0) { | |
936 | memset(bp, 0, n_padsz); | |
937 | bp = (void *) bp + n_padsz; | |
938 | } | |
939 | ||
940 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); | |
941 | } |