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ec26815a | 1 | /* AFS Volume Location Service client |
1da177e4 LT |
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 | ||
5a0e3ad6 | 12 | #include <linux/gfp.h> |
1da177e4 LT |
13 | #include <linux/init.h> |
14 | #include <linux/sched.h> | |
4d9df986 | 15 | #include "afs_fs.h" |
1da177e4 LT |
16 | #include "internal.h" |
17 | ||
1da177e4 | 18 | /* |
d2ddc776 | 19 | * Deliver reply data to a VL.GetEntryByNameU call. |
1da177e4 | 20 | */ |
d2ddc776 | 21 | static int afs_deliver_vl_get_entry_by_name_u(struct afs_call *call) |
1da177e4 | 22 | { |
d2ddc776 DH |
23 | struct afs_uvldbentry__xdr *uvldb; |
24 | struct afs_vldb_entry *entry; | |
25 | bool new_only = false; | |
1fba5868 | 26 | u32 tmp, nr_servers, vlflags; |
d2ddc776 | 27 | int i, ret; |
1da177e4 | 28 | |
d001648e | 29 | _enter(""); |
1da177e4 | 30 | |
d001648e | 31 | ret = afs_transfer_reply(call); |
372ee163 DH |
32 | if (ret < 0) |
33 | return ret; | |
1da177e4 | 34 | |
08e0e7c8 | 35 | /* unmarshall the reply once we've received all of it */ |
d2ddc776 | 36 | uvldb = call->buffer; |
97e3043a | 37 | entry = call->reply[0]; |
d2ddc776 | 38 | |
45df8462 DH |
39 | nr_servers = ntohl(uvldb->nServers); |
40 | if (nr_servers > AFS_NMAXNSERVERS) | |
41 | nr_servers = AFS_NMAXNSERVERS; | |
42 | ||
d2ddc776 DH |
43 | for (i = 0; i < ARRAY_SIZE(uvldb->name) - 1; i++) |
44 | entry->name[i] = (u8)ntohl(uvldb->name[i]); | |
45 | entry->name[i] = 0; | |
46 | entry->name_len = strlen(entry->name); | |
47 | ||
48 | /* If there is a new replication site that we can use, ignore all the | |
49 | * sites that aren't marked as new. | |
50 | */ | |
45df8462 | 51 | for (i = 0; i < nr_servers; i++) { |
d2ddc776 DH |
52 | tmp = ntohl(uvldb->serverFlags[i]); |
53 | if (!(tmp & AFS_VLSF_DONTUSE) && | |
54 | (tmp & AFS_VLSF_NEWREPSITE)) | |
55 | new_only = true; | |
4d9df986 | 56 | } |
1da177e4 | 57 | |
1fba5868 | 58 | vlflags = ntohl(uvldb->flags); |
45df8462 | 59 | for (i = 0; i < nr_servers; i++) { |
d2ddc776 DH |
60 | struct afs_uuid__xdr *xdr; |
61 | struct afs_uuid *uuid; | |
62 | int j; | |
1da177e4 | 63 | |
d2ddc776 DH |
64 | tmp = ntohl(uvldb->serverFlags[i]); |
65 | if (tmp & AFS_VLSF_DONTUSE || | |
66 | (new_only && !(tmp & AFS_VLSF_NEWREPSITE))) | |
67 | continue; | |
1fba5868 | 68 | if (tmp & AFS_VLSF_RWVOL) { |
d2ddc776 | 69 | entry->fs_mask[i] |= AFS_VOL_VTM_RW; |
1fba5868 MD |
70 | if (vlflags & AFS_VLF_BACKEXISTS) |
71 | entry->fs_mask[i] |= AFS_VOL_VTM_BAK; | |
72 | } | |
1da177e4 | 73 | if (tmp & AFS_VLSF_ROVOL) |
d2ddc776 | 74 | entry->fs_mask[i] |= AFS_VOL_VTM_RO; |
d2ddc776 DH |
75 | if (!entry->fs_mask[i]) |
76 | continue; | |
77 | ||
78 | xdr = &uvldb->serverNumber[i]; | |
79 | uuid = (struct afs_uuid *)&entry->fs_server[i]; | |
80 | uuid->time_low = xdr->time_low; | |
81 | uuid->time_mid = htons(ntohl(xdr->time_mid)); | |
82 | uuid->time_hi_and_version = htons(ntohl(xdr->time_hi_and_version)); | |
83 | uuid->clock_seq_hi_and_reserved = (u8)ntohl(xdr->clock_seq_hi_and_reserved); | |
84 | uuid->clock_seq_low = (u8)ntohl(xdr->clock_seq_low); | |
85 | for (j = 0; j < 6; j++) | |
86 | uuid->node[j] = (u8)ntohl(xdr->node[j]); | |
1da177e4 | 87 | |
d2ddc776 DH |
88 | entry->nr_servers++; |
89 | } | |
1da177e4 | 90 | |
d2ddc776 DH |
91 | for (i = 0; i < AFS_MAXTYPES; i++) |
92 | entry->vid[i] = ntohl(uvldb->volumeId[i]); | |
1da177e4 | 93 | |
1fba5868 | 94 | if (vlflags & AFS_VLF_RWEXISTS) |
d2ddc776 | 95 | __set_bit(AFS_VLDB_HAS_RW, &entry->flags); |
1fba5868 | 96 | if (vlflags & AFS_VLF_ROEXISTS) |
d2ddc776 | 97 | __set_bit(AFS_VLDB_HAS_RO, &entry->flags); |
1fba5868 | 98 | if (vlflags & AFS_VLF_BACKEXISTS) |
d2ddc776 | 99 | __set_bit(AFS_VLDB_HAS_BAK, &entry->flags); |
08e0e7c8 | 100 | |
1fba5868 | 101 | if (!(vlflags & (AFS_VLF_RWEXISTS | AFS_VLF_ROEXISTS | AFS_VLF_BACKEXISTS))) { |
d2ddc776 DH |
102 | entry->error = -ENOMEDIUM; |
103 | __set_bit(AFS_VLDB_QUERY_ERROR, &entry->flags); | |
104 | } | |
105 | ||
106 | __set_bit(AFS_VLDB_QUERY_VALID, &entry->flags); | |
08e0e7c8 DH |
107 | _leave(" = 0 [done]"); |
108 | return 0; | |
ec26815a | 109 | } |
1da177e4 | 110 | |
d2ddc776 DH |
111 | static void afs_destroy_vl_get_entry_by_name_u(struct afs_call *call) |
112 | { | |
113 | kfree(call->reply[0]); | |
114 | afs_flat_call_destructor(call); | |
115 | } | |
1da177e4 | 116 | |
08e0e7c8 | 117 | /* |
d2ddc776 | 118 | * VL.GetEntryByNameU operation type. |
08e0e7c8 | 119 | */ |
d2ddc776 DH |
120 | static const struct afs_call_type afs_RXVLGetEntryByNameU = { |
121 | .name = "VL.GetEntryByNameU", | |
025db80c | 122 | .op = afs_VL_GetEntryByNameU, |
d2ddc776 DH |
123 | .deliver = afs_deliver_vl_get_entry_by_name_u, |
124 | .destructor = afs_destroy_vl_get_entry_by_name_u, | |
08e0e7c8 | 125 | }; |
1da177e4 | 126 | |
1da177e4 | 127 | /* |
d2ddc776 DH |
128 | * Dispatch a get volume entry by name or ID operation (uuid variant). If the |
129 | * volname is a decimal number then it's a volume ID not a volume name. | |
1da177e4 | 130 | */ |
0a5143f2 | 131 | struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *vc, |
d2ddc776 DH |
132 | const char *volname, |
133 | int volnamesz) | |
1da177e4 | 134 | { |
d2ddc776 | 135 | struct afs_vldb_entry *entry; |
08e0e7c8 | 136 | struct afs_call *call; |
0a5143f2 | 137 | struct afs_net *net = vc->cell->net; |
d2ddc776 | 138 | size_t reqsz, padsz; |
08e0e7c8 | 139 | __be32 *bp; |
1da177e4 | 140 | |
08e0e7c8 | 141 | _enter(""); |
1da177e4 | 142 | |
08e0e7c8 DH |
143 | padsz = (4 - (volnamesz & 3)) & 3; |
144 | reqsz = 8 + volnamesz + padsz; | |
1da177e4 | 145 | |
d2ddc776 DH |
146 | entry = kzalloc(sizeof(struct afs_vldb_entry), GFP_KERNEL); |
147 | if (!entry) | |
148 | return ERR_PTR(-ENOMEM); | |
149 | ||
150 | call = afs_alloc_flat_call(net, &afs_RXVLGetEntryByNameU, reqsz, | |
151 | sizeof(struct afs_uvldbentry__xdr)); | |
152 | if (!call) { | |
153 | kfree(entry); | |
154 | return ERR_PTR(-ENOMEM); | |
155 | } | |
1da177e4 | 156 | |
0a5143f2 | 157 | call->key = vc->key; |
97e3043a | 158 | call->reply[0] = entry; |
d2ddc776 | 159 | call->ret_reply0 = true; |
1da177e4 | 160 | |
d2ddc776 | 161 | /* Marshall the parameters */ |
08e0e7c8 | 162 | bp = call->request; |
d2ddc776 | 163 | *bp++ = htonl(VLGETENTRYBYNAMEU); |
08e0e7c8 DH |
164 | *bp++ = htonl(volnamesz); |
165 | memcpy(bp, volname, volnamesz); | |
166 | if (padsz > 0) | |
d2ddc776 | 167 | memset((void *)bp + volnamesz, 0, padsz); |
08e0e7c8 | 168 | |
025db80c | 169 | trace_afs_make_vl_call(call); |
0a5143f2 | 170 | return (struct afs_vldb_entry *)afs_make_call(&vc->ac, call, GFP_KERNEL, false); |
ec26815a | 171 | } |
1da177e4 | 172 | |
1da177e4 | 173 | /* |
d2ddc776 DH |
174 | * Deliver reply data to a VL.GetAddrsU call. |
175 | * | |
176 | * GetAddrsU(IN ListAddrByAttributes *inaddr, | |
177 | * OUT afsUUID *uuidp1, | |
178 | * OUT uint32_t *uniquifier, | |
179 | * OUT uint32_t *nentries, | |
180 | * OUT bulkaddrs *blkaddrs); | |
1da177e4 | 181 | */ |
d2ddc776 | 182 | static int afs_deliver_vl_get_addrs_u(struct afs_call *call) |
1da177e4 | 183 | { |
d2ddc776 DH |
184 | struct afs_addr_list *alist; |
185 | __be32 *bp; | |
186 | u32 uniquifier, nentries, count; | |
187 | int i, ret; | |
188 | ||
12bdcf33 DH |
189 | _enter("{%u,%zu/%u}", |
190 | call->unmarshall, iov_iter_count(call->_iter), call->count); | |
d2ddc776 | 191 | |
d2ddc776 DH |
192 | switch (call->unmarshall) { |
193 | case 0: | |
12bdcf33 DH |
194 | afs_extract_to_buf(call, |
195 | sizeof(struct afs_uuid__xdr) + 3 * sizeof(__be32)); | |
d2ddc776 DH |
196 | call->unmarshall++; |
197 | ||
198 | /* Extract the returned uuid, uniquifier, nentries and blkaddrs size */ | |
199 | case 1: | |
12bdcf33 | 200 | ret = afs_extract_data(call, true); |
d2ddc776 DH |
201 | if (ret < 0) |
202 | return ret; | |
203 | ||
204 | bp = call->buffer + sizeof(struct afs_uuid__xdr); | |
205 | uniquifier = ntohl(*bp++); | |
206 | nentries = ntohl(*bp++); | |
207 | count = ntohl(*bp); | |
208 | ||
209 | nentries = min(nentries, count); | |
210 | alist = afs_alloc_addrlist(nentries, FS_SERVICE, AFS_FS_PORT); | |
211 | if (!alist) | |
212 | return -ENOMEM; | |
213 | alist->version = uniquifier; | |
214 | call->reply[0] = alist; | |
215 | call->count = count; | |
216 | call->count2 = nentries; | |
d2ddc776 DH |
217 | call->unmarshall++; |
218 | ||
12bdcf33 DH |
219 | more_entries: |
220 | count = min(call->count, 4U); | |
221 | afs_extract_to_buf(call, count * sizeof(__be32)); | |
222 | ||
d2ddc776 DH |
223 | /* Extract entries */ |
224 | case 2: | |
12bdcf33 | 225 | ret = afs_extract_data(call, call->count > 4); |
d2ddc776 DH |
226 | if (ret < 0) |
227 | return ret; | |
228 | ||
229 | alist = call->reply[0]; | |
230 | bp = call->buffer; | |
12bdcf33 | 231 | count = min(call->count, 4U); |
d2ddc776 DH |
232 | for (i = 0; i < count; i++) |
233 | if (alist->nr_addrs < call->count2) | |
bf99a53c | 234 | afs_merge_fs_addr4(alist, *bp++, AFS_FS_PORT); |
d2ddc776 DH |
235 | |
236 | call->count -= count; | |
237 | if (call->count > 0) | |
12bdcf33 | 238 | goto more_entries; |
d2ddc776 DH |
239 | call->unmarshall++; |
240 | break; | |
241 | } | |
242 | ||
243 | _leave(" = 0 [done]"); | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static void afs_vl_get_addrs_u_destructor(struct afs_call *call) | |
248 | { | |
249 | afs_put_server(call->net, (struct afs_server *)call->reply[0]); | |
250 | kfree(call->reply[1]); | |
251 | return afs_flat_call_destructor(call); | |
252 | } | |
253 | ||
254 | /* | |
255 | * VL.GetAddrsU operation type. | |
256 | */ | |
257 | static const struct afs_call_type afs_RXVLGetAddrsU = { | |
258 | .name = "VL.GetAddrsU", | |
025db80c | 259 | .op = afs_VL_GetAddrsU, |
d2ddc776 DH |
260 | .deliver = afs_deliver_vl_get_addrs_u, |
261 | .destructor = afs_vl_get_addrs_u_destructor, | |
262 | }; | |
263 | ||
264 | /* | |
265 | * Dispatch an operation to get the addresses for a server, where the server is | |
266 | * nominated by UUID. | |
267 | */ | |
0a5143f2 | 268 | struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *vc, |
d2ddc776 DH |
269 | const uuid_t *uuid) |
270 | { | |
271 | struct afs_ListAddrByAttributes__xdr *r; | |
272 | const struct afs_uuid *u = (const struct afs_uuid *)uuid; | |
08e0e7c8 | 273 | struct afs_call *call; |
0a5143f2 | 274 | struct afs_net *net = vc->cell->net; |
1da177e4 | 275 | __be32 *bp; |
d2ddc776 | 276 | int i; |
1da177e4 | 277 | |
08e0e7c8 | 278 | _enter(""); |
1da177e4 | 279 | |
d2ddc776 DH |
280 | call = afs_alloc_flat_call(net, &afs_RXVLGetAddrsU, |
281 | sizeof(__be32) + sizeof(struct afs_ListAddrByAttributes__xdr), | |
282 | sizeof(struct afs_uuid__xdr) + 3 * sizeof(__be32)); | |
08e0e7c8 | 283 | if (!call) |
d2ddc776 | 284 | return ERR_PTR(-ENOMEM); |
1da177e4 | 285 | |
0a5143f2 | 286 | call->key = vc->key; |
d2ddc776 DH |
287 | call->reply[0] = NULL; |
288 | call->ret_reply0 = true; | |
1da177e4 | 289 | |
d2ddc776 | 290 | /* Marshall the parameters */ |
08e0e7c8 | 291 | bp = call->request; |
d2ddc776 DH |
292 | *bp++ = htonl(VLGETADDRSU); |
293 | r = (struct afs_ListAddrByAttributes__xdr *)bp; | |
294 | r->Mask = htonl(AFS_VLADDR_UUID); | |
295 | r->ipaddr = 0; | |
296 | r->index = 0; | |
297 | r->spare = 0; | |
298 | r->uuid.time_low = u->time_low; | |
299 | r->uuid.time_mid = htonl(ntohs(u->time_mid)); | |
300 | r->uuid.time_hi_and_version = htonl(ntohs(u->time_hi_and_version)); | |
301 | r->uuid.clock_seq_hi_and_reserved = htonl(u->clock_seq_hi_and_reserved); | |
302 | r->uuid.clock_seq_low = htonl(u->clock_seq_low); | |
303 | for (i = 0; i < 6; i++) | |
fe342cf7 | 304 | r->uuid.node[i] = htonl(u->node[i]); |
1da177e4 | 305 | |
025db80c | 306 | trace_afs_make_vl_call(call); |
0a5143f2 | 307 | return (struct afs_addr_list *)afs_make_call(&vc->ac, call, GFP_KERNEL, false); |
ec26815a | 308 | } |
bf99a53c DH |
309 | |
310 | /* | |
311 | * Deliver reply data to an VL.GetCapabilities operation. | |
312 | */ | |
313 | static int afs_deliver_vl_get_capabilities(struct afs_call *call) | |
314 | { | |
315 | u32 count; | |
316 | int ret; | |
317 | ||
12bdcf33 DH |
318 | _enter("{%u,%zu/%u}", |
319 | call->unmarshall, iov_iter_count(call->_iter), call->count); | |
bf99a53c | 320 | |
bf99a53c DH |
321 | switch (call->unmarshall) { |
322 | case 0: | |
12bdcf33 | 323 | afs_extract_to_tmp(call); |
bf99a53c DH |
324 | call->unmarshall++; |
325 | ||
326 | /* Extract the capabilities word count */ | |
327 | case 1: | |
12bdcf33 | 328 | ret = afs_extract_data(call, true); |
bf99a53c DH |
329 | if (ret < 0) |
330 | return ret; | |
331 | ||
332 | count = ntohl(call->tmp); | |
bf99a53c DH |
333 | call->count = count; |
334 | call->count2 = count; | |
12bdcf33 | 335 | |
bf99a53c | 336 | call->unmarshall++; |
12bdcf33 | 337 | afs_extract_discard(call, count * sizeof(__be32)); |
bf99a53c DH |
338 | |
339 | /* Extract capabilities words */ | |
340 | case 2: | |
12bdcf33 | 341 | ret = afs_extract_data(call, false); |
bf99a53c DH |
342 | if (ret < 0) |
343 | return ret; | |
344 | ||
345 | /* TODO: Examine capabilities */ | |
346 | ||
bf99a53c DH |
347 | call->unmarshall++; |
348 | break; | |
349 | } | |
350 | ||
bf99a53c DH |
351 | _leave(" = 0 [done]"); |
352 | return 0; | |
353 | } | |
354 | ||
3bf0fb6f DH |
355 | static void afs_destroy_vl_get_capabilities(struct afs_call *call) |
356 | { | |
357 | struct afs_vlserver *server = call->reply[0]; | |
358 | ||
359 | afs_put_vlserver(call->net, server); | |
360 | afs_flat_call_destructor(call); | |
361 | } | |
362 | ||
bf99a53c DH |
363 | /* |
364 | * VL.GetCapabilities operation type | |
365 | */ | |
366 | static const struct afs_call_type afs_RXVLGetCapabilities = { | |
367 | .name = "VL.GetCapabilities", | |
025db80c | 368 | .op = afs_VL_GetCapabilities, |
bf99a53c | 369 | .deliver = afs_deliver_vl_get_capabilities, |
3bf0fb6f DH |
370 | .done = afs_vlserver_probe_result, |
371 | .destructor = afs_destroy_vl_get_capabilities, | |
bf99a53c DH |
372 | }; |
373 | ||
374 | /* | |
0a5143f2 | 375 | * Probe a volume server for the capabilities that it supports. This can |
bf99a53c DH |
376 | * return up to 196 words. |
377 | * | |
378 | * We use this to probe for service upgrade to determine what the server at the | |
379 | * other end supports. | |
380 | */ | |
3bf0fb6f DH |
381 | int afs_vl_get_capabilities(struct afs_net *net, |
382 | struct afs_addr_cursor *ac, | |
383 | struct key *key, | |
384 | struct afs_vlserver *server, | |
385 | unsigned int server_index, | |
386 | bool async) | |
bf99a53c DH |
387 | { |
388 | struct afs_call *call; | |
389 | __be32 *bp; | |
390 | ||
391 | _enter(""); | |
392 | ||
393 | call = afs_alloc_flat_call(net, &afs_RXVLGetCapabilities, 1 * 4, 16 * 4); | |
394 | if (!call) | |
395 | return -ENOMEM; | |
396 | ||
397 | call->key = key; | |
3bf0fb6f DH |
398 | call->reply[0] = afs_get_vlserver(server); |
399 | call->reply[1] = (void *)(long)server_index; | |
400 | call->upgrade = true; | |
401 | call->want_reply_time = true; | |
bf99a53c DH |
402 | |
403 | /* marshall the parameters */ | |
404 | bp = call->request; | |
405 | *bp++ = htonl(VLGETCAPABILITIES); | |
406 | ||
407 | /* Can't take a ref on server */ | |
025db80c | 408 | trace_afs_make_vl_call(call); |
3bf0fb6f | 409 | return afs_make_call(ac, call, GFP_KERNEL, async); |
bf99a53c DH |
410 | } |
411 | ||
412 | /* | |
413 | * Deliver reply data to a YFSVL.GetEndpoints call. | |
414 | * | |
415 | * GetEndpoints(IN yfsServerAttributes *attr, | |
416 | * OUT opr_uuid *uuid, | |
417 | * OUT afs_int32 *uniquifier, | |
418 | * OUT endpoints *fsEndpoints, | |
419 | * OUT endpoints *volEndpoints) | |
420 | */ | |
421 | static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call) | |
422 | { | |
423 | struct afs_addr_list *alist; | |
424 | __be32 *bp; | |
425 | u32 uniquifier, size; | |
426 | int ret; | |
427 | ||
12bdcf33 DH |
428 | _enter("{%u,%zu,%u}", |
429 | call->unmarshall, iov_iter_count(call->_iter), call->count2); | |
bf99a53c | 430 | |
bf99a53c DH |
431 | switch (call->unmarshall) { |
432 | case 0: | |
12bdcf33 | 433 | afs_extract_to_buf(call, sizeof(uuid_t) + 3 * sizeof(__be32)); |
bf99a53c DH |
434 | call->unmarshall = 1; |
435 | ||
436 | /* Extract the returned uuid, uniquifier, fsEndpoints count and | |
437 | * either the first fsEndpoint type or the volEndpoints | |
438 | * count if there are no fsEndpoints. */ | |
439 | case 1: | |
12bdcf33 | 440 | ret = afs_extract_data(call, true); |
bf99a53c DH |
441 | if (ret < 0) |
442 | return ret; | |
443 | ||
444 | bp = call->buffer + sizeof(uuid_t); | |
445 | uniquifier = ntohl(*bp++); | |
446 | call->count = ntohl(*bp++); | |
447 | call->count2 = ntohl(*bp); /* Type or next count */ | |
448 | ||
449 | if (call->count > YFS_MAXENDPOINTS) | |
160cb957 DH |
450 | return afs_protocol_error(call, -EBADMSG, |
451 | afs_eproto_yvl_fsendpt_num); | |
bf99a53c DH |
452 | |
453 | alist = afs_alloc_addrlist(call->count, FS_SERVICE, AFS_FS_PORT); | |
454 | if (!alist) | |
455 | return -ENOMEM; | |
456 | alist->version = uniquifier; | |
457 | call->reply[0] = alist; | |
bf99a53c DH |
458 | |
459 | if (call->count == 0) | |
460 | goto extract_volendpoints; | |
461 | ||
12bdcf33 | 462 | next_fsendpoint: |
bf99a53c DH |
463 | switch (call->count2) { |
464 | case YFS_ENDPOINT_IPV4: | |
465 | size = sizeof(__be32) * (1 + 1 + 1); | |
466 | break; | |
467 | case YFS_ENDPOINT_IPV6: | |
468 | size = sizeof(__be32) * (1 + 4 + 1); | |
469 | break; | |
470 | default: | |
160cb957 DH |
471 | return afs_protocol_error(call, -EBADMSG, |
472 | afs_eproto_yvl_fsendpt_type); | |
bf99a53c DH |
473 | } |
474 | ||
475 | size += sizeof(__be32); | |
12bdcf33 DH |
476 | afs_extract_to_buf(call, size); |
477 | call->unmarshall = 2; | |
478 | ||
479 | /* Extract fsEndpoints[] entries */ | |
480 | case 2: | |
481 | ret = afs_extract_data(call, true); | |
bf99a53c DH |
482 | if (ret < 0) |
483 | return ret; | |
484 | ||
485 | alist = call->reply[0]; | |
486 | bp = call->buffer; | |
487 | switch (call->count2) { | |
488 | case YFS_ENDPOINT_IPV4: | |
489 | if (ntohl(bp[0]) != sizeof(__be32) * 2) | |
160cb957 DH |
490 | return afs_protocol_error(call, -EBADMSG, |
491 | afs_eproto_yvl_fsendpt4_len); | |
bf99a53c DH |
492 | afs_merge_fs_addr4(alist, bp[1], ntohl(bp[2])); |
493 | bp += 3; | |
494 | break; | |
495 | case YFS_ENDPOINT_IPV6: | |
496 | if (ntohl(bp[0]) != sizeof(__be32) * 5) | |
160cb957 DH |
497 | return afs_protocol_error(call, -EBADMSG, |
498 | afs_eproto_yvl_fsendpt6_len); | |
bf99a53c DH |
499 | afs_merge_fs_addr6(alist, bp + 1, ntohl(bp[5])); |
500 | bp += 6; | |
501 | break; | |
502 | default: | |
160cb957 DH |
503 | return afs_protocol_error(call, -EBADMSG, |
504 | afs_eproto_yvl_fsendpt_type); | |
bf99a53c DH |
505 | } |
506 | ||
507 | /* Got either the type of the next entry or the count of | |
508 | * volEndpoints if no more fsEndpoints. | |
509 | */ | |
fe342cf7 | 510 | call->count2 = ntohl(*bp++); |
bf99a53c | 511 | |
bf99a53c DH |
512 | call->count--; |
513 | if (call->count > 0) | |
12bdcf33 | 514 | goto next_fsendpoint; |
bf99a53c DH |
515 | |
516 | extract_volendpoints: | |
517 | /* Extract the list of volEndpoints. */ | |
518 | call->count = call->count2; | |
519 | if (!call->count) | |
520 | goto end; | |
521 | if (call->count > YFS_MAXENDPOINTS) | |
160cb957 DH |
522 | return afs_protocol_error(call, -EBADMSG, |
523 | afs_eproto_yvl_vlendpt_type); | |
bf99a53c | 524 | |
12bdcf33 | 525 | afs_extract_to_buf(call, 1 * sizeof(__be32)); |
bf99a53c DH |
526 | call->unmarshall = 3; |
527 | ||
528 | /* Extract the type of volEndpoints[0]. Normally we would | |
529 | * extract the type of the next endpoint when we extract the | |
530 | * data of the current one, but this is the first... | |
531 | */ | |
532 | case 3: | |
12bdcf33 | 533 | ret = afs_extract_data(call, true); |
bf99a53c DH |
534 | if (ret < 0) |
535 | return ret; | |
536 | ||
537 | bp = call->buffer; | |
bf99a53c | 538 | |
12bdcf33 DH |
539 | next_volendpoint: |
540 | call->count2 = ntohl(*bp++); | |
bf99a53c DH |
541 | switch (call->count2) { |
542 | case YFS_ENDPOINT_IPV4: | |
543 | size = sizeof(__be32) * (1 + 1 + 1); | |
544 | break; | |
545 | case YFS_ENDPOINT_IPV6: | |
546 | size = sizeof(__be32) * (1 + 4 + 1); | |
547 | break; | |
548 | default: | |
160cb957 DH |
549 | return afs_protocol_error(call, -EBADMSG, |
550 | afs_eproto_yvl_vlendpt_type); | |
bf99a53c DH |
551 | } |
552 | ||
553 | if (call->count > 1) | |
12bdcf33 DH |
554 | size += sizeof(__be32); /* Get next type too */ |
555 | afs_extract_to_buf(call, size); | |
556 | call->unmarshall = 4; | |
557 | ||
558 | /* Extract volEndpoints[] entries */ | |
559 | case 4: | |
560 | ret = afs_extract_data(call, true); | |
bf99a53c DH |
561 | if (ret < 0) |
562 | return ret; | |
563 | ||
564 | bp = call->buffer; | |
565 | switch (call->count2) { | |
566 | case YFS_ENDPOINT_IPV4: | |
567 | if (ntohl(bp[0]) != sizeof(__be32) * 2) | |
160cb957 DH |
568 | return afs_protocol_error(call, -EBADMSG, |
569 | afs_eproto_yvl_vlendpt4_len); | |
bf99a53c DH |
570 | bp += 3; |
571 | break; | |
572 | case YFS_ENDPOINT_IPV6: | |
573 | if (ntohl(bp[0]) != sizeof(__be32) * 5) | |
160cb957 DH |
574 | return afs_protocol_error(call, -EBADMSG, |
575 | afs_eproto_yvl_vlendpt6_len); | |
bf99a53c DH |
576 | bp += 6; |
577 | break; | |
578 | default: | |
160cb957 DH |
579 | return afs_protocol_error(call, -EBADMSG, |
580 | afs_eproto_yvl_vlendpt_type); | |
bf99a53c DH |
581 | } |
582 | ||
583 | /* Got either the type of the next entry or the count of | |
584 | * volEndpoints if no more fsEndpoints. | |
585 | */ | |
bf99a53c | 586 | call->count--; |
12bdcf33 DH |
587 | if (call->count > 0) |
588 | goto next_volendpoint; | |
bf99a53c DH |
589 | |
590 | end: | |
12bdcf33 | 591 | afs_extract_discard(call, 0); |
bf99a53c DH |
592 | call->unmarshall = 5; |
593 | ||
594 | /* Done */ | |
595 | case 5: | |
12bdcf33 | 596 | ret = afs_extract_data(call, false); |
bf99a53c DH |
597 | if (ret < 0) |
598 | return ret; | |
599 | call->unmarshall = 6; | |
600 | ||
601 | case 6: | |
602 | break; | |
603 | } | |
604 | ||
605 | alist = call->reply[0]; | |
bf99a53c DH |
606 | _leave(" = 0 [done]"); |
607 | return 0; | |
608 | } | |
609 | ||
610 | /* | |
611 | * YFSVL.GetEndpoints operation type. | |
612 | */ | |
613 | static const struct afs_call_type afs_YFSVLGetEndpoints = { | |
025db80c DH |
614 | .name = "YFSVL.GetEndpoints", |
615 | .op = afs_YFSVL_GetEndpoints, | |
bf99a53c DH |
616 | .deliver = afs_deliver_yfsvl_get_endpoints, |
617 | .destructor = afs_vl_get_addrs_u_destructor, | |
618 | }; | |
619 | ||
620 | /* | |
621 | * Dispatch an operation to get the addresses for a server, where the server is | |
622 | * nominated by UUID. | |
623 | */ | |
0a5143f2 | 624 | struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *vc, |
bf99a53c DH |
625 | const uuid_t *uuid) |
626 | { | |
627 | struct afs_call *call; | |
0a5143f2 | 628 | struct afs_net *net = vc->cell->net; |
bf99a53c DH |
629 | __be32 *bp; |
630 | ||
631 | _enter(""); | |
632 | ||
633 | call = afs_alloc_flat_call(net, &afs_YFSVLGetEndpoints, | |
634 | sizeof(__be32) * 2 + sizeof(*uuid), | |
635 | sizeof(struct in6_addr) + sizeof(__be32) * 3); | |
636 | if (!call) | |
637 | return ERR_PTR(-ENOMEM); | |
638 | ||
0a5143f2 | 639 | call->key = vc->key; |
bf99a53c DH |
640 | call->reply[0] = NULL; |
641 | call->ret_reply0 = true; | |
642 | ||
643 | /* Marshall the parameters */ | |
644 | bp = call->request; | |
645 | *bp++ = htonl(YVLGETENDPOINTS); | |
646 | *bp++ = htonl(YFS_SERVER_UUID); | |
647 | memcpy(bp, uuid, sizeof(*uuid)); /* Type opr_uuid */ | |
648 | ||
025db80c | 649 | trace_afs_make_vl_call(call); |
0a5143f2 | 650 | return (struct afs_addr_list *)afs_make_call(&vc->ac, call, GFP_KERNEL, false); |
bf99a53c | 651 | } |