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