diff options
Diffstat (limited to 'fs/afs/vlclient.c')
-rw-r--r-- | fs/afs/vlclient.c | 695 |
1 files changed, 695 insertions, 0 deletions
diff --git a/fs/afs/vlclient.c b/fs/afs/vlclient.c new file mode 100644 index 000000000000..7b0e3192ee39 --- /dev/null +++ b/fs/afs/vlclient.c | |||
@@ -0,0 +1,695 @@ | |||
1 | /* vlclient.c: AFS Volume Location Service client | ||
2 | * | ||
3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. | ||
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> | ||
14 | #include <rxrpc/rxrpc.h> | ||
15 | #include <rxrpc/transport.h> | ||
16 | #include <rxrpc/connection.h> | ||
17 | #include <rxrpc/call.h> | ||
18 | #include "server.h" | ||
19 | #include "volume.h" | ||
20 | #include "vlclient.h" | ||
21 | #include "kafsasyncd.h" | ||
22 | #include "kafstimod.h" | ||
23 | #include "errors.h" | ||
24 | #include "internal.h" | ||
25 | |||
26 | #define VLGETENTRYBYID 503 /* AFS Get Cache Entry By ID operation ID */ | ||
27 | #define VLGETENTRYBYNAME 504 /* AFS Get Cache Entry By Name operation ID */ | ||
28 | #define VLPROBE 514 /* AFS Probe Volume Location Service operation ID */ | ||
29 | |||
30 | static void afs_rxvl_get_entry_by_id_attn(struct rxrpc_call *call); | ||
31 | static void afs_rxvl_get_entry_by_id_error(struct rxrpc_call *call); | ||
32 | |||
33 | /*****************************************************************************/ | ||
34 | /* | ||
35 | * map afs VL abort codes to/from Linux error codes | ||
36 | * - called with call->lock held | ||
37 | */ | ||
38 | static void afs_rxvl_aemap(struct rxrpc_call *call) | ||
39 | { | ||
40 | int err; | ||
41 | |||
42 | _enter("{%u,%u,%d}", | ||
43 | call->app_err_state, call->app_abort_code, call->app_errno); | ||
44 | |||
45 | switch (call->app_err_state) { | ||
46 | case RXRPC_ESTATE_LOCAL_ABORT: | ||
47 | call->app_abort_code = -call->app_errno; | ||
48 | return; | ||
49 | |||
50 | case RXRPC_ESTATE_PEER_ABORT: | ||
51 | switch (call->app_abort_code) { | ||
52 | case AFSVL_IDEXIST: err = -EEXIST; break; | ||
53 | case AFSVL_IO: err = -EREMOTEIO; break; | ||
54 | case AFSVL_NAMEEXIST: err = -EEXIST; break; | ||
55 | case AFSVL_CREATEFAIL: err = -EREMOTEIO; break; | ||
56 | case AFSVL_NOENT: err = -ENOMEDIUM; break; | ||
57 | case AFSVL_EMPTY: err = -ENOMEDIUM; break; | ||
58 | case AFSVL_ENTDELETED: err = -ENOMEDIUM; break; | ||
59 | case AFSVL_BADNAME: err = -EINVAL; break; | ||
60 | case AFSVL_BADINDEX: err = -EINVAL; break; | ||
61 | case AFSVL_BADVOLTYPE: err = -EINVAL; break; | ||
62 | case AFSVL_BADSERVER: err = -EINVAL; break; | ||
63 | case AFSVL_BADPARTITION: err = -EINVAL; break; | ||
64 | case AFSVL_REPSFULL: err = -EFBIG; break; | ||
65 | case AFSVL_NOREPSERVER: err = -ENOENT; break; | ||
66 | case AFSVL_DUPREPSERVER: err = -EEXIST; break; | ||
67 | case AFSVL_RWNOTFOUND: err = -ENOENT; break; | ||
68 | case AFSVL_BADREFCOUNT: err = -EINVAL; break; | ||
69 | case AFSVL_SIZEEXCEEDED: err = -EINVAL; break; | ||
70 | case AFSVL_BADENTRY: err = -EINVAL; break; | ||
71 | case AFSVL_BADVOLIDBUMP: err = -EINVAL; break; | ||
72 | case AFSVL_IDALREADYHASHED: err = -EINVAL; break; | ||
73 | case AFSVL_ENTRYLOCKED: err = -EBUSY; break; | ||
74 | case AFSVL_BADVOLOPER: err = -EBADRQC; break; | ||
75 | case AFSVL_BADRELLOCKTYPE: err = -EINVAL; break; | ||
76 | case AFSVL_RERELEASE: err = -EREMOTEIO; break; | ||
77 | case AFSVL_BADSERVERFLAG: err = -EINVAL; break; | ||
78 | case AFSVL_PERM: err = -EACCES; break; | ||
79 | case AFSVL_NOMEM: err = -EREMOTEIO; break; | ||
80 | default: | ||
81 | err = afs_abort_to_error(call->app_abort_code); | ||
82 | break; | ||
83 | } | ||
84 | call->app_errno = err; | ||
85 | return; | ||
86 | |||
87 | default: | ||
88 | return; | ||
89 | } | ||
90 | } /* end afs_rxvl_aemap() */ | ||
91 | |||
92 | #if 0 | ||
93 | /*****************************************************************************/ | ||
94 | /* | ||
95 | * probe a volume location server to see if it is still alive -- unused | ||
96 | */ | ||
97 | static int afs_rxvl_probe(struct afs_server *server, int alloc_flags) | ||
98 | { | ||
99 | struct rxrpc_connection *conn; | ||
100 | struct rxrpc_call *call; | ||
101 | struct kvec piov[1]; | ||
102 | size_t sent; | ||
103 | int ret; | ||
104 | __be32 param[1]; | ||
105 | |||
106 | DECLARE_WAITQUEUE(myself, current); | ||
107 | |||
108 | /* get hold of the vlserver connection */ | ||
109 | ret = afs_server_get_vlconn(server, &conn); | ||
110 | if (ret < 0) | ||
111 | goto out; | ||
112 | |||
113 | /* create a call through that connection */ | ||
114 | ret = rxrpc_create_call(conn, NULL, NULL, afs_rxvl_aemap, &call); | ||
115 | if (ret < 0) { | ||
116 | printk("kAFS: Unable to create call: %d\n", ret); | ||
117 | goto out_put_conn; | ||
118 | } | ||
119 | call->app_opcode = VLPROBE; | ||
120 | |||
121 | /* we want to get event notifications from the call */ | ||
122 | add_wait_queue(&call->waitq, &myself); | ||
123 | |||
124 | /* marshall the parameters */ | ||
125 | param[0] = htonl(VLPROBE); | ||
126 | piov[0].iov_len = sizeof(param); | ||
127 | piov[0].iov_base = param; | ||
128 | |||
129 | /* send the parameters to the server */ | ||
130 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, | ||
131 | alloc_flags, 0, &sent); | ||
132 | if (ret < 0) | ||
133 | goto abort; | ||
134 | |||
135 | /* wait for the reply to completely arrive */ | ||
136 | for (;;) { | ||
137 | set_current_state(TASK_INTERRUPTIBLE); | ||
138 | if (call->app_call_state != RXRPC_CSTATE_CLNT_RCV_REPLY || | ||
139 | signal_pending(current)) | ||
140 | break; | ||
141 | schedule(); | ||
142 | } | ||
143 | set_current_state(TASK_RUNNING); | ||
144 | |||
145 | ret = -EINTR; | ||
146 | if (signal_pending(current)) | ||
147 | goto abort; | ||
148 | |||
149 | switch (call->app_call_state) { | ||
150 | case RXRPC_CSTATE_ERROR: | ||
151 | ret = call->app_errno; | ||
152 | goto out_unwait; | ||
153 | |||
154 | case RXRPC_CSTATE_CLNT_GOT_REPLY: | ||
155 | ret = 0; | ||
156 | goto out_unwait; | ||
157 | |||
158 | default: | ||
159 | BUG(); | ||
160 | } | ||
161 | |||
162 | abort: | ||
163 | set_current_state(TASK_UNINTERRUPTIBLE); | ||
164 | rxrpc_call_abort(call, ret); | ||
165 | schedule(); | ||
166 | |||
167 | out_unwait: | ||
168 | set_current_state(TASK_RUNNING); | ||
169 | remove_wait_queue(&call->waitq, &myself); | ||
170 | rxrpc_put_call(call); | ||
171 | out_put_conn: | ||
172 | rxrpc_put_connection(conn); | ||
173 | out: | ||
174 | return ret; | ||
175 | |||
176 | } /* end afs_rxvl_probe() */ | ||
177 | #endif | ||
178 | |||
179 | /*****************************************************************************/ | ||
180 | /* | ||
181 | * look up a volume location database entry by name | ||
182 | */ | ||
183 | int afs_rxvl_get_entry_by_name(struct afs_server *server, | ||
184 | const char *volname, | ||
185 | unsigned volnamesz, | ||
186 | struct afs_cache_vlocation *entry) | ||
187 | { | ||
188 | DECLARE_WAITQUEUE(myself, current); | ||
189 | |||
190 | struct rxrpc_connection *conn; | ||
191 | struct rxrpc_call *call; | ||
192 | struct kvec piov[3]; | ||
193 | unsigned tmp; | ||
194 | size_t sent; | ||
195 | int ret, loop; | ||
196 | __be32 *bp, param[2], zero; | ||
197 | |||
198 | _enter(",%*.*s,%u,", volnamesz, volnamesz, volname, volnamesz); | ||
199 | |||
200 | memset(entry, 0, sizeof(*entry)); | ||
201 | |||
202 | /* get hold of the vlserver connection */ | ||
203 | ret = afs_server_get_vlconn(server, &conn); | ||
204 | if (ret < 0) | ||
205 | goto out; | ||
206 | |||
207 | /* create a call through that connection */ | ||
208 | ret = rxrpc_create_call(conn, NULL, NULL, afs_rxvl_aemap, &call); | ||
209 | if (ret < 0) { | ||
210 | printk("kAFS: Unable to create call: %d\n", ret); | ||
211 | goto out_put_conn; | ||
212 | } | ||
213 | call->app_opcode = VLGETENTRYBYNAME; | ||
214 | |||
215 | /* we want to get event notifications from the call */ | ||
216 | add_wait_queue(&call->waitq, &myself); | ||
217 | |||
218 | /* marshall the parameters */ | ||
219 | piov[1].iov_len = volnamesz; | ||
220 | piov[1].iov_base = (char *) volname; | ||
221 | |||
222 | zero = 0; | ||
223 | piov[2].iov_len = (4 - (piov[1].iov_len & 3)) & 3; | ||
224 | piov[2].iov_base = &zero; | ||
225 | |||
226 | param[0] = htonl(VLGETENTRYBYNAME); | ||
227 | param[1] = htonl(piov[1].iov_len); | ||
228 | |||
229 | piov[0].iov_len = sizeof(param); | ||
230 | piov[0].iov_base = param; | ||
231 | |||
232 | /* send the parameters to the server */ | ||
233 | ret = rxrpc_call_write_data(call, 3, piov, RXRPC_LAST_PACKET, GFP_NOFS, | ||
234 | 0, &sent); | ||
235 | if (ret < 0) | ||
236 | goto abort; | ||
237 | |||
238 | /* wait for the reply to completely arrive */ | ||
239 | bp = rxrpc_call_alloc_scratch(call, 384); | ||
240 | |||
241 | ret = rxrpc_call_read_data(call, bp, 384, | ||
242 | RXRPC_CALL_READ_BLOCK | | ||
243 | RXRPC_CALL_READ_ALL); | ||
244 | if (ret < 0) { | ||
245 | if (ret == -ECONNABORTED) { | ||
246 | ret = call->app_errno; | ||
247 | goto out_unwait; | ||
248 | } | ||
249 | goto abort; | ||
250 | } | ||
251 | |||
252 | /* unmarshall the reply */ | ||
253 | for (loop = 0; loop < 64; loop++) | ||
254 | entry->name[loop] = ntohl(*bp++); | ||
255 | bp++; /* final NUL */ | ||
256 | |||
257 | bp++; /* type */ | ||
258 | entry->nservers = ntohl(*bp++); | ||
259 | |||
260 | for (loop = 0; loop < 8; loop++) | ||
261 | entry->servers[loop].s_addr = *bp++; | ||
262 | |||
263 | bp += 8; /* partition IDs */ | ||
264 | |||
265 | for (loop = 0; loop < 8; loop++) { | ||
266 | tmp = ntohl(*bp++); | ||
267 | if (tmp & AFS_VLSF_RWVOL) | ||
268 | entry->srvtmask[loop] |= AFS_VOL_VTM_RW; | ||
269 | if (tmp & AFS_VLSF_ROVOL) | ||
270 | entry->srvtmask[loop] |= AFS_VOL_VTM_RO; | ||
271 | if (tmp & AFS_VLSF_BACKVOL) | ||
272 | entry->srvtmask[loop] |= AFS_VOL_VTM_BAK; | ||
273 | } | ||
274 | |||
275 | entry->vid[0] = ntohl(*bp++); | ||
276 | entry->vid[1] = ntohl(*bp++); | ||
277 | entry->vid[2] = ntohl(*bp++); | ||
278 | |||
279 | bp++; /* clone ID */ | ||
280 | |||
281 | tmp = ntohl(*bp++); /* flags */ | ||
282 | if (tmp & AFS_VLF_RWEXISTS) | ||
283 | entry->vidmask |= AFS_VOL_VTM_RW; | ||
284 | if (tmp & AFS_VLF_ROEXISTS) | ||
285 | entry->vidmask |= AFS_VOL_VTM_RO; | ||
286 | if (tmp & AFS_VLF_BACKEXISTS) | ||
287 | entry->vidmask |= AFS_VOL_VTM_BAK; | ||
288 | |||
289 | ret = -ENOMEDIUM; | ||
290 | if (!entry->vidmask) | ||
291 | goto abort; | ||
292 | |||
293 | /* success */ | ||
294 | entry->rtime = get_seconds(); | ||
295 | ret = 0; | ||
296 | |||
297 | out_unwait: | ||
298 | set_current_state(TASK_RUNNING); | ||
299 | remove_wait_queue(&call->waitq, &myself); | ||
300 | rxrpc_put_call(call); | ||
301 | out_put_conn: | ||
302 | rxrpc_put_connection(conn); | ||
303 | out: | ||
304 | _leave(" = %d", ret); | ||
305 | return ret; | ||
306 | |||
307 | abort: | ||
308 | set_current_state(TASK_UNINTERRUPTIBLE); | ||
309 | rxrpc_call_abort(call, ret); | ||
310 | schedule(); | ||
311 | goto out_unwait; | ||
312 | } /* end afs_rxvl_get_entry_by_name() */ | ||
313 | |||
314 | /*****************************************************************************/ | ||
315 | /* | ||
316 | * look up a volume location database entry by ID | ||
317 | */ | ||
318 | int afs_rxvl_get_entry_by_id(struct afs_server *server, | ||
319 | afs_volid_t volid, | ||
320 | afs_voltype_t voltype, | ||
321 | struct afs_cache_vlocation *entry) | ||
322 | { | ||
323 | DECLARE_WAITQUEUE(myself, current); | ||
324 | |||
325 | struct rxrpc_connection *conn; | ||
326 | struct rxrpc_call *call; | ||
327 | struct kvec piov[1]; | ||
328 | unsigned tmp; | ||
329 | size_t sent; | ||
330 | int ret, loop; | ||
331 | __be32 *bp, param[3]; | ||
332 | |||
333 | _enter(",%x,%d,", volid, voltype); | ||
334 | |||
335 | memset(entry, 0, sizeof(*entry)); | ||
336 | |||
337 | /* get hold of the vlserver connection */ | ||
338 | ret = afs_server_get_vlconn(server, &conn); | ||
339 | if (ret < 0) | ||
340 | goto out; | ||
341 | |||
342 | /* create a call through that connection */ | ||
343 | ret = rxrpc_create_call(conn, NULL, NULL, afs_rxvl_aemap, &call); | ||
344 | if (ret < 0) { | ||
345 | printk("kAFS: Unable to create call: %d\n", ret); | ||
346 | goto out_put_conn; | ||
347 | } | ||
348 | call->app_opcode = VLGETENTRYBYID; | ||
349 | |||
350 | /* we want to get event notifications from the call */ | ||
351 | add_wait_queue(&call->waitq, &myself); | ||
352 | |||
353 | /* marshall the parameters */ | ||
354 | param[0] = htonl(VLGETENTRYBYID); | ||
355 | param[1] = htonl(volid); | ||
356 | param[2] = htonl(voltype); | ||
357 | |||
358 | piov[0].iov_len = sizeof(param); | ||
359 | piov[0].iov_base = param; | ||
360 | |||
361 | /* send the parameters to the server */ | ||
362 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS, | ||
363 | 0, &sent); | ||
364 | if (ret < 0) | ||
365 | goto abort; | ||
366 | |||
367 | /* wait for the reply to completely arrive */ | ||
368 | bp = rxrpc_call_alloc_scratch(call, 384); | ||
369 | |||
370 | ret = rxrpc_call_read_data(call, bp, 384, | ||
371 | RXRPC_CALL_READ_BLOCK | | ||
372 | RXRPC_CALL_READ_ALL); | ||
373 | if (ret < 0) { | ||
374 | if (ret == -ECONNABORTED) { | ||
375 | ret = call->app_errno; | ||
376 | goto out_unwait; | ||
377 | } | ||
378 | goto abort; | ||
379 | } | ||
380 | |||
381 | /* unmarshall the reply */ | ||
382 | for (loop = 0; loop < 64; loop++) | ||
383 | entry->name[loop] = ntohl(*bp++); | ||
384 | bp++; /* final NUL */ | ||
385 | |||
386 | bp++; /* type */ | ||
387 | entry->nservers = ntohl(*bp++); | ||
388 | |||
389 | for (loop = 0; loop < 8; loop++) | ||
390 | entry->servers[loop].s_addr = *bp++; | ||
391 | |||
392 | bp += 8; /* partition IDs */ | ||
393 | |||
394 | for (loop = 0; loop < 8; loop++) { | ||
395 | tmp = ntohl(*bp++); | ||
396 | if (tmp & AFS_VLSF_RWVOL) | ||
397 | entry->srvtmask[loop] |= AFS_VOL_VTM_RW; | ||
398 | if (tmp & AFS_VLSF_ROVOL) | ||
399 | entry->srvtmask[loop] |= AFS_VOL_VTM_RO; | ||
400 | if (tmp & AFS_VLSF_BACKVOL) | ||
401 | entry->srvtmask[loop] |= AFS_VOL_VTM_BAK; | ||
402 | } | ||
403 | |||
404 | entry->vid[0] = ntohl(*bp++); | ||
405 | entry->vid[1] = ntohl(*bp++); | ||
406 | entry->vid[2] = ntohl(*bp++); | ||
407 | |||
408 | bp++; /* clone ID */ | ||
409 | |||
410 | tmp = ntohl(*bp++); /* flags */ | ||
411 | if (tmp & AFS_VLF_RWEXISTS) | ||
412 | entry->vidmask |= AFS_VOL_VTM_RW; | ||
413 | if (tmp & AFS_VLF_ROEXISTS) | ||
414 | entry->vidmask |= AFS_VOL_VTM_RO; | ||
415 | if (tmp & AFS_VLF_BACKEXISTS) | ||
416 | entry->vidmask |= AFS_VOL_VTM_BAK; | ||
417 | |||
418 | ret = -ENOMEDIUM; | ||
419 | if (!entry->vidmask) | ||
420 | goto abort; | ||
421 | |||
422 | #if 0 /* TODO: remove */ | ||
423 | entry->nservers = 3; | ||
424 | entry->servers[0].s_addr = htonl(0xac101249); | ||
425 | entry->servers[1].s_addr = htonl(0xac101243); | ||
426 | entry->servers[2].s_addr = htonl(0xac10125b /*0xac10125b*/); | ||
427 | |||
428 | entry->srvtmask[0] = AFS_VOL_VTM_RO; | ||
429 | entry->srvtmask[1] = AFS_VOL_VTM_RO; | ||
430 | entry->srvtmask[2] = AFS_VOL_VTM_RO | AFS_VOL_VTM_RW; | ||
431 | #endif | ||
432 | |||
433 | /* success */ | ||
434 | entry->rtime = get_seconds(); | ||
435 | ret = 0; | ||
436 | |||
437 | out_unwait: | ||
438 | set_current_state(TASK_RUNNING); | ||
439 | remove_wait_queue(&call->waitq, &myself); | ||
440 | rxrpc_put_call(call); | ||
441 | out_put_conn: | ||
442 | rxrpc_put_connection(conn); | ||
443 | out: | ||
444 | _leave(" = %d", ret); | ||
445 | return ret; | ||
446 | |||
447 | abort: | ||
448 | set_current_state(TASK_UNINTERRUPTIBLE); | ||
449 | rxrpc_call_abort(call, ret); | ||
450 | schedule(); | ||
451 | goto out_unwait; | ||
452 | } /* end afs_rxvl_get_entry_by_id() */ | ||
453 | |||
454 | /*****************************************************************************/ | ||
455 | /* | ||
456 | * look up a volume location database entry by ID asynchronously | ||
457 | */ | ||
458 | int afs_rxvl_get_entry_by_id_async(struct afs_async_op *op, | ||
459 | afs_volid_t volid, | ||
460 | afs_voltype_t voltype) | ||
461 | { | ||
462 | struct rxrpc_connection *conn; | ||
463 | struct rxrpc_call *call; | ||
464 | struct kvec piov[1]; | ||
465 | size_t sent; | ||
466 | int ret; | ||
467 | __be32 param[3]; | ||
468 | |||
469 | _enter(",%x,%d,", volid, voltype); | ||
470 | |||
471 | /* get hold of the vlserver connection */ | ||
472 | ret = afs_server_get_vlconn(op->server, &conn); | ||
473 | if (ret < 0) { | ||
474 | _leave(" = %d", ret); | ||
475 | return ret; | ||
476 | } | ||
477 | |||
478 | /* create a call through that connection */ | ||
479 | ret = rxrpc_create_call(conn, | ||
480 | afs_rxvl_get_entry_by_id_attn, | ||
481 | afs_rxvl_get_entry_by_id_error, | ||
482 | afs_rxvl_aemap, | ||
483 | &op->call); | ||
484 | rxrpc_put_connection(conn); | ||
485 | |||
486 | if (ret < 0) { | ||
487 | printk("kAFS: Unable to create call: %d\n", ret); | ||
488 | _leave(" = %d", ret); | ||
489 | return ret; | ||
490 | } | ||
491 | |||
492 | op->call->app_opcode = VLGETENTRYBYID; | ||
493 | op->call->app_user = op; | ||
494 | |||
495 | call = op->call; | ||
496 | rxrpc_get_call(call); | ||
497 | |||
498 | /* send event notifications from the call to kafsasyncd */ | ||
499 | afs_kafsasyncd_begin_op(op); | ||
500 | |||
501 | /* marshall the parameters */ | ||
502 | param[0] = htonl(VLGETENTRYBYID); | ||
503 | param[1] = htonl(volid); | ||
504 | param[2] = htonl(voltype); | ||
505 | |||
506 | piov[0].iov_len = sizeof(param); | ||
507 | piov[0].iov_base = param; | ||
508 | |||
509 | /* allocate result read buffer in scratch space */ | ||
510 | call->app_scr_ptr = rxrpc_call_alloc_scratch(op->call, 384); | ||
511 | |||
512 | /* send the parameters to the server */ | ||
513 | ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS, | ||
514 | 0, &sent); | ||
515 | if (ret < 0) { | ||
516 | rxrpc_call_abort(call, ret); /* handle from kafsasyncd */ | ||
517 | ret = 0; | ||
518 | goto out; | ||
519 | } | ||
520 | |||
521 | /* wait for the reply to completely arrive */ | ||
522 | ret = rxrpc_call_read_data(call, call->app_scr_ptr, 384, 0); | ||
523 | switch (ret) { | ||
524 | case 0: | ||
525 | case -EAGAIN: | ||
526 | case -ECONNABORTED: | ||
527 | ret = 0; | ||
528 | break; /* all handled by kafsasyncd */ | ||
529 | |||
530 | default: | ||
531 | rxrpc_call_abort(call, ret); /* make kafsasyncd handle it */ | ||
532 | ret = 0; | ||
533 | break; | ||
534 | } | ||
535 | |||
536 | out: | ||
537 | rxrpc_put_call(call); | ||
538 | _leave(" = %d", ret); | ||
539 | return ret; | ||
540 | |||
541 | } /* end afs_rxvl_get_entry_by_id_async() */ | ||
542 | |||
543 | /*****************************************************************************/ | ||
544 | /* | ||
545 | * attend to the asynchronous get VLDB entry by ID | ||
546 | */ | ||
547 | int afs_rxvl_get_entry_by_id_async2(struct afs_async_op *op, | ||
548 | struct afs_cache_vlocation *entry) | ||
549 | { | ||
550 | __be32 *bp; | ||
551 | __u32 tmp; | ||
552 | int loop, ret; | ||
553 | |||
554 | _enter("{op=%p cst=%u}", op, op->call->app_call_state); | ||
555 | |||
556 | memset(entry, 0, sizeof(*entry)); | ||
557 | |||
558 | if (op->call->app_call_state == RXRPC_CSTATE_COMPLETE) { | ||
559 | /* operation finished */ | ||
560 | afs_kafsasyncd_terminate_op(op); | ||
561 | |||
562 | bp = op->call->app_scr_ptr; | ||
563 | |||
564 | /* unmarshall the reply */ | ||
565 | for (loop = 0; loop < 64; loop++) | ||
566 | entry->name[loop] = ntohl(*bp++); | ||
567 | bp++; /* final NUL */ | ||
568 | |||
569 | bp++; /* type */ | ||
570 | entry->nservers = ntohl(*bp++); | ||
571 | |||
572 | for (loop = 0; loop < 8; loop++) | ||
573 | entry->servers[loop].s_addr = *bp++; | ||
574 | |||
575 | bp += 8; /* partition IDs */ | ||
576 | |||
577 | for (loop = 0; loop < 8; loop++) { | ||
578 | tmp = ntohl(*bp++); | ||
579 | if (tmp & AFS_VLSF_RWVOL) | ||
580 | entry->srvtmask[loop] |= AFS_VOL_VTM_RW; | ||
581 | if (tmp & AFS_VLSF_ROVOL) | ||
582 | entry->srvtmask[loop] |= AFS_VOL_VTM_RO; | ||
583 | if (tmp & AFS_VLSF_BACKVOL) | ||
584 | entry->srvtmask[loop] |= AFS_VOL_VTM_BAK; | ||
585 | } | ||
586 | |||
587 | entry->vid[0] = ntohl(*bp++); | ||
588 | entry->vid[1] = ntohl(*bp++); | ||
589 | entry->vid[2] = ntohl(*bp++); | ||
590 | |||
591 | bp++; /* clone ID */ | ||
592 | |||
593 | tmp = ntohl(*bp++); /* flags */ | ||
594 | if (tmp & AFS_VLF_RWEXISTS) | ||
595 | entry->vidmask |= AFS_VOL_VTM_RW; | ||
596 | if (tmp & AFS_VLF_ROEXISTS) | ||
597 | entry->vidmask |= AFS_VOL_VTM_RO; | ||
598 | if (tmp & AFS_VLF_BACKEXISTS) | ||
599 | entry->vidmask |= AFS_VOL_VTM_BAK; | ||
600 | |||
601 | ret = -ENOMEDIUM; | ||
602 | if (!entry->vidmask) { | ||
603 | rxrpc_call_abort(op->call, ret); | ||
604 | goto done; | ||
605 | } | ||
606 | |||
607 | #if 0 /* TODO: remove */ | ||
608 | entry->nservers = 3; | ||
609 | entry->servers[0].s_addr = htonl(0xac101249); | ||
610 | entry->servers[1].s_addr = htonl(0xac101243); | ||
611 | entry->servers[2].s_addr = htonl(0xac10125b /*0xac10125b*/); | ||
612 | |||
613 | entry->srvtmask[0] = AFS_VOL_VTM_RO; | ||
614 | entry->srvtmask[1] = AFS_VOL_VTM_RO; | ||
615 | entry->srvtmask[2] = AFS_VOL_VTM_RO | AFS_VOL_VTM_RW; | ||
616 | #endif | ||
617 | |||
618 | /* success */ | ||
619 | entry->rtime = get_seconds(); | ||
620 | ret = 0; | ||
621 | goto done; | ||
622 | } | ||
623 | |||
624 | if (op->call->app_call_state == RXRPC_CSTATE_ERROR) { | ||
625 | /* operation error */ | ||
626 | ret = op->call->app_errno; | ||
627 | goto done; | ||
628 | } | ||
629 | |||
630 | _leave(" = -EAGAIN"); | ||
631 | return -EAGAIN; | ||
632 | |||
633 | done: | ||
634 | rxrpc_put_call(op->call); | ||
635 | op->call = NULL; | ||
636 | _leave(" = %d", ret); | ||
637 | return ret; | ||
638 | } /* end afs_rxvl_get_entry_by_id_async2() */ | ||
639 | |||
640 | /*****************************************************************************/ | ||
641 | /* | ||
642 | * handle attention events on an async get-entry-by-ID op | ||
643 | * - called from krxiod | ||
644 | */ | ||
645 | static void afs_rxvl_get_entry_by_id_attn(struct rxrpc_call *call) | ||
646 | { | ||
647 | struct afs_async_op *op = call->app_user; | ||
648 | |||
649 | _enter("{op=%p cst=%u}", op, call->app_call_state); | ||
650 | |||
651 | switch (call->app_call_state) { | ||
652 | case RXRPC_CSTATE_COMPLETE: | ||
653 | afs_kafsasyncd_attend_op(op); | ||
654 | break; | ||
655 | case RXRPC_CSTATE_CLNT_RCV_REPLY: | ||
656 | if (call->app_async_read) | ||
657 | break; | ||
658 | case RXRPC_CSTATE_CLNT_GOT_REPLY: | ||
659 | if (call->app_read_count == 0) | ||
660 | break; | ||
661 | printk("kAFS: Reply bigger than expected" | ||
662 | " {cst=%u asyn=%d mark=%Zu rdy=%Zu pr=%u%s}", | ||
663 | call->app_call_state, | ||
664 | call->app_async_read, | ||
665 | call->app_mark, | ||
666 | call->app_ready_qty, | ||
667 | call->pkt_rcv_count, | ||
668 | call->app_last_rcv ? " last" : ""); | ||
669 | |||
670 | rxrpc_call_abort(call, -EBADMSG); | ||
671 | break; | ||
672 | default: | ||
673 | BUG(); | ||
674 | } | ||
675 | |||
676 | _leave(""); | ||
677 | |||
678 | } /* end afs_rxvl_get_entry_by_id_attn() */ | ||
679 | |||
680 | /*****************************************************************************/ | ||
681 | /* | ||
682 | * handle error events on an async get-entry-by-ID op | ||
683 | * - called from krxiod | ||
684 | */ | ||
685 | static void afs_rxvl_get_entry_by_id_error(struct rxrpc_call *call) | ||
686 | { | ||
687 | struct afs_async_op *op = call->app_user; | ||
688 | |||
689 | _enter("{op=%p cst=%u}", op, call->app_call_state); | ||
690 | |||
691 | afs_kafsasyncd_attend_op(op); | ||
692 | |||
693 | _leave(""); | ||
694 | |||
695 | } /* end afs_rxvl_get_entry_by_id_error() */ | ||