]>
Commit | Line | Data |
---|---|---|
75818250 TS |
1 | /* |
2 | * QEMU Block driver for NBD | |
3 | * | |
4 | * Copyright (C) 2008 Bull S.A.S. | |
bd5921b4 | 5 | * Author: Laurent Vivier <Laurent.Vivier@bull.net> |
75818250 TS |
6 | * |
7 | * Some parts: | |
8 | * Copyright (C) 2007 Anthony Liguori <anthony@codemonkey.ws> | |
9 | * | |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
16 | * | |
17 | * The above copyright notice and this permission notice shall be included in | |
18 | * all copies or substantial portions of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
23 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
26 | * THE SOFTWARE. | |
27 | */ | |
28 | ||
80c71a24 | 29 | #include "qemu/osdep.h" |
2302c1ca | 30 | #include "block/nbd-client.h" |
1de7afc9 | 31 | #include "qemu/uri.h" |
737e150e | 32 | #include "block/block_int.h" |
1de7afc9 | 33 | #include "qemu/module.h" |
2019d68b | 34 | #include "qapi/qmp/qdict.h" |
f53a1feb KW |
35 | #include "qapi/qmp/qjson.h" |
36 | #include "qapi/qmp/qint.h" | |
2019d68b | 37 | #include "qapi/qmp/qstring.h" |
75818250 | 38 | |
75818250 | 39 | |
1d45f8b5 LV |
40 | #define EN_OPTSTR ":exportname=" |
41 | ||
75818250 | 42 | typedef struct BDRVNBDState { |
2302c1ca | 43 | NbdClientSession client; |
75818250 TS |
44 | } BDRVNBDState; |
45 | ||
f53a1feb | 46 | static int nbd_parse_uri(const char *filename, QDict *options) |
1d7d2a9d PB |
47 | { |
48 | URI *uri; | |
49 | const char *p; | |
50 | QueryParams *qp = NULL; | |
51 | int ret = 0; | |
f53a1feb | 52 | bool is_unix; |
1d7d2a9d PB |
53 | |
54 | uri = uri_parse(filename); | |
55 | if (!uri) { | |
56 | return -EINVAL; | |
57 | } | |
58 | ||
59 | /* transport */ | |
60 | if (!strcmp(uri->scheme, "nbd")) { | |
f53a1feb | 61 | is_unix = false; |
1d7d2a9d | 62 | } else if (!strcmp(uri->scheme, "nbd+tcp")) { |
f53a1feb | 63 | is_unix = false; |
1d7d2a9d | 64 | } else if (!strcmp(uri->scheme, "nbd+unix")) { |
f53a1feb | 65 | is_unix = true; |
1d7d2a9d PB |
66 | } else { |
67 | ret = -EINVAL; | |
68 | goto out; | |
69 | } | |
70 | ||
71 | p = uri->path ? uri->path : "/"; | |
72 | p += strspn(p, "/"); | |
73 | if (p[0]) { | |
f53a1feb | 74 | qdict_put(options, "export", qstring_from_str(p)); |
1d7d2a9d PB |
75 | } |
76 | ||
77 | qp = query_params_parse(uri->query); | |
f53a1feb | 78 | if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) { |
1d7d2a9d PB |
79 | ret = -EINVAL; |
80 | goto out; | |
81 | } | |
82 | ||
f53a1feb | 83 | if (is_unix) { |
1d7d2a9d PB |
84 | /* nbd+unix:///export?socket=path */ |
85 | if (uri->server || uri->port || strcmp(qp->p[0].name, "socket")) { | |
86 | ret = -EINVAL; | |
87 | goto out; | |
88 | } | |
f53a1feb | 89 | qdict_put(options, "path", qstring_from_str(qp->p[0].value)); |
1d7d2a9d | 90 | } else { |
23307908 | 91 | QString *host; |
bebbf7fa | 92 | /* nbd[+tcp]://host[:port]/export */ |
1d7d2a9d PB |
93 | if (!uri->server) { |
94 | ret = -EINVAL; | |
95 | goto out; | |
96 | } | |
f17c90be | 97 | |
23307908 JT |
98 | /* strip braces from literal IPv6 address */ |
99 | if (uri->server[0] == '[') { | |
100 | host = qstring_from_substr(uri->server, 1, | |
101 | strlen(uri->server) - 2); | |
102 | } else { | |
103 | host = qstring_from_str(uri->server); | |
104 | } | |
105 | ||
106 | qdict_put(options, "host", host); | |
bebbf7fa KW |
107 | if (uri->port) { |
108 | char* port_str = g_strdup_printf("%d", uri->port); | |
109 | qdict_put(options, "port", qstring_from_str(port_str)); | |
110 | g_free(port_str); | |
111 | } | |
1d7d2a9d PB |
112 | } |
113 | ||
114 | out: | |
115 | if (qp) { | |
116 | query_params_free(qp); | |
117 | } | |
118 | uri_free(uri); | |
119 | return ret; | |
120 | } | |
121 | ||
6963a30d KW |
122 | static void nbd_parse_filename(const char *filename, QDict *options, |
123 | Error **errp) | |
75818250 | 124 | { |
1d45f8b5 | 125 | char *file; |
33897dc7 NT |
126 | char *export_name; |
127 | const char *host_spec; | |
75818250 | 128 | const char *unixpath; |
75818250 | 129 | |
681e7ad0 KW |
130 | if (qdict_haskey(options, "host") |
131 | || qdict_haskey(options, "port") | |
132 | || qdict_haskey(options, "path")) | |
133 | { | |
134 | error_setg(errp, "host/port/path and a file name may not be specified " | |
135 | "at the same time"); | |
136 | return; | |
137 | } | |
138 | ||
1d7d2a9d | 139 | if (strstr(filename, "://")) { |
6963a30d KW |
140 | int ret = nbd_parse_uri(filename, options); |
141 | if (ret < 0) { | |
142 | error_setg(errp, "No valid URL specified"); | |
143 | } | |
144 | return; | |
1d7d2a9d PB |
145 | } |
146 | ||
7267c094 | 147 | file = g_strdup(filename); |
1d45f8b5 | 148 | |
33897dc7 NT |
149 | export_name = strstr(file, EN_OPTSTR); |
150 | if (export_name) { | |
151 | if (export_name[strlen(EN_OPTSTR)] == 0) { | |
1d45f8b5 LV |
152 | goto out; |
153 | } | |
33897dc7 NT |
154 | export_name[0] = 0; /* truncate 'file' */ |
155 | export_name += strlen(EN_OPTSTR); | |
f53a1feb KW |
156 | |
157 | qdict_put(options, "export", qstring_from_str(export_name)); | |
1d45f8b5 LV |
158 | } |
159 | ||
33897dc7 NT |
160 | /* extract the host_spec - fail if it's not nbd:... */ |
161 | if (!strstart(file, "nbd:", &host_spec)) { | |
6963a30d | 162 | error_setg(errp, "File name string for NBD must start with 'nbd:'"); |
1d45f8b5 LV |
163 | goto out; |
164 | } | |
75818250 | 165 | |
f53a1feb | 166 | if (!*host_spec) { |
f53a1feb KW |
167 | goto out; |
168 | } | |
169 | ||
33897dc7 NT |
170 | /* are we a UNIX or TCP socket? */ |
171 | if (strstart(host_spec, "unix:", &unixpath)) { | |
f53a1feb | 172 | qdict_put(options, "path", qstring_from_str(unixpath)); |
75818250 | 173 | } else { |
f53a1feb KW |
174 | InetSocketAddress *addr = NULL; |
175 | ||
6963a30d | 176 | addr = inet_parse(host_spec, errp); |
92de9012 | 177 | if (!addr) { |
f17c90be KW |
178 | goto out; |
179 | } | |
75818250 | 180 | |
f53a1feb KW |
181 | qdict_put(options, "host", qstring_from_str(addr->host)); |
182 | qdict_put(options, "port", qstring_from_str(addr->port)); | |
183 | qapi_free_InetSocketAddress(addr); | |
184 | } | |
75818250 | 185 | |
33897dc7 | 186 | out: |
7267c094 | 187 | g_free(file); |
f53a1feb KW |
188 | } |
189 | ||
7a5ed437 DB |
190 | static SocketAddress *nbd_config(BDRVNBDState *s, QDict *options, char **export, |
191 | Error **errp) | |
f53a1feb | 192 | { |
7a5ed437 | 193 | SocketAddress *saddr; |
f53a1feb | 194 | |
a69d9af4 PB |
195 | if (qdict_haskey(options, "path") == qdict_haskey(options, "host")) { |
196 | if (qdict_haskey(options, "path")) { | |
77e8b9ca | 197 | error_setg(errp, "path and host may not be used at the same time."); |
a69d9af4 | 198 | } else { |
77e8b9ca | 199 | error_setg(errp, "one of path and host must be specified."); |
681e7ad0 | 200 | } |
7a5ed437 | 201 | return NULL; |
33897dc7 | 202 | } |
f53a1feb | 203 | |
7a5ed437 | 204 | saddr = g_new0(SocketAddress, 1); |
f53a1feb | 205 | |
7a5ed437 | 206 | if (qdict_haskey(options, "path")) { |
0399293e | 207 | UnixSocketAddress *q_unix; |
6a8f9661 | 208 | saddr->type = SOCKET_ADDRESS_KIND_UNIX; |
32bafa8f | 209 | q_unix = saddr->u.q_unix.data = g_new0(UnixSocketAddress, 1); |
0399293e | 210 | q_unix->path = g_strdup(qdict_get_str(options, "path")); |
7a5ed437 DB |
211 | qdict_del(options, "path"); |
212 | } else { | |
0399293e | 213 | InetSocketAddress *inet; |
6a8f9661 | 214 | saddr->type = SOCKET_ADDRESS_KIND_INET; |
32bafa8f | 215 | inet = saddr->u.inet.data = g_new0(InetSocketAddress, 1); |
0399293e | 216 | inet->host = g_strdup(qdict_get_str(options, "host")); |
7a5ed437 | 217 | if (!qdict_get_try_str(options, "port")) { |
0399293e | 218 | inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); |
7a5ed437 | 219 | } else { |
0399293e | 220 | inet->port = g_strdup(qdict_get_str(options, "port")); |
7a5ed437 DB |
221 | } |
222 | qdict_del(options, "host"); | |
223 | qdict_del(options, "port"); | |
f53a1feb KW |
224 | } |
225 | ||
6a8f9661 | 226 | s->client.is_unix = saddr->type == SOCKET_ADDRESS_KIND_UNIX; |
bebbf7fa | 227 | |
e2bc625f MAL |
228 | *export = g_strdup(qdict_get_try_str(options, "export")); |
229 | if (*export) { | |
f53a1feb KW |
230 | qdict_del(options, "export"); |
231 | } | |
7a5ed437 DB |
232 | |
233 | return saddr; | |
33897dc7 | 234 | } |
1d45f8b5 | 235 | |
f53a829b HR |
236 | NbdClientSession *nbd_get_client_session(BlockDriverState *bs) |
237 | { | |
238 | BDRVNBDState *s = bs->opaque; | |
239 | return &s->client; | |
240 | } | |
241 | ||
064097d9 DB |
242 | static QIOChannelSocket *nbd_establish_connection(SocketAddress *saddr, |
243 | Error **errp) | |
33897dc7 | 244 | { |
064097d9 DB |
245 | QIOChannelSocket *sioc; |
246 | Error *local_err = NULL; | |
75818250 | 247 | |
064097d9 | 248 | sioc = qio_channel_socket_new(); |
75818250 | 249 | |
064097d9 DB |
250 | qio_channel_socket_connect_sync(sioc, |
251 | saddr, | |
252 | &local_err); | |
253 | if (local_err) { | |
254 | error_propagate(errp, local_err); | |
255 | return NULL; | |
1d45f8b5 | 256 | } |
75818250 | 257 | |
064097d9 | 258 | qio_channel_set_delay(QIO_CHANNEL(sioc), false); |
7a5ed437 | 259 | |
064097d9 | 260 | return sioc; |
33897dc7 NT |
261 | } |
262 | ||
75822a12 DB |
263 | |
264 | static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, Error **errp) | |
265 | { | |
266 | Object *obj; | |
267 | QCryptoTLSCreds *creds; | |
268 | ||
269 | obj = object_resolve_path_component( | |
270 | object_get_objects_root(), id); | |
271 | if (!obj) { | |
272 | error_setg(errp, "No TLS credentials with id '%s'", | |
273 | id); | |
274 | return NULL; | |
275 | } | |
276 | creds = (QCryptoTLSCreds *) | |
277 | object_dynamic_cast(obj, TYPE_QCRYPTO_TLS_CREDS); | |
278 | if (!creds) { | |
279 | error_setg(errp, "Object with id '%s' is not TLS credentials", | |
280 | id); | |
281 | return NULL; | |
282 | } | |
283 | ||
284 | if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { | |
285 | error_setg(errp, | |
286 | "Expecting TLS credentials with a client endpoint"); | |
287 | return NULL; | |
288 | } | |
289 | object_ref(obj); | |
290 | return creds; | |
291 | } | |
292 | ||
293 | ||
015a1036 HR |
294 | static int nbd_open(BlockDriverState *bs, QDict *options, int flags, |
295 | Error **errp) | |
33897dc7 NT |
296 | { |
297 | BDRVNBDState *s = bs->opaque; | |
e2bc625f | 298 | char *export = NULL; |
75822a12 | 299 | QIOChannelSocket *sioc = NULL; |
7a5ed437 | 300 | SocketAddress *saddr; |
75822a12 DB |
301 | const char *tlscredsid; |
302 | QCryptoTLSCreds *tlscreds = NULL; | |
303 | const char *hostname = NULL; | |
304 | int ret = -EINVAL; | |
ae255e52 | 305 | |
33897dc7 | 306 | /* Pop the config into our state object. Exit if invalid. */ |
7a5ed437 DB |
307 | saddr = nbd_config(s, options, &export, errp); |
308 | if (!saddr) { | |
75822a12 DB |
309 | goto error; |
310 | } | |
311 | ||
312 | tlscredsid = g_strdup(qdict_get_try_str(options, "tls-creds")); | |
313 | if (tlscredsid) { | |
314 | qdict_del(options, "tls-creds"); | |
315 | tlscreds = nbd_get_tls_creds(tlscredsid, errp); | |
316 | if (!tlscreds) { | |
317 | goto error; | |
318 | } | |
319 | ||
320 | if (saddr->type != SOCKET_ADDRESS_KIND_INET) { | |
321 | error_setg(errp, "TLS only supported over IP sockets"); | |
322 | goto error; | |
323 | } | |
32bafa8f | 324 | hostname = saddr->u.inet.data->host; |
33897dc7 NT |
325 | } |
326 | ||
327 | /* establish TCP connection, return error if it fails | |
328 | * TODO: Configurable retry-until-timeout behaviour. | |
329 | */ | |
064097d9 | 330 | sioc = nbd_establish_connection(saddr, errp); |
064097d9 | 331 | if (!sioc) { |
75822a12 DB |
332 | ret = -ECONNREFUSED; |
333 | goto error; | |
2c7989a9 PB |
334 | } |
335 | ||
2302c1ca | 336 | /* NBD handshake */ |
75822a12 DB |
337 | ret = nbd_client_init(bs, sioc, export, |
338 | tlscreds, hostname, errp); | |
339 | error: | |
340 | if (sioc) { | |
341 | object_unref(OBJECT(sioc)); | |
342 | } | |
343 | if (tlscreds) { | |
344 | object_unref(OBJECT(tlscreds)); | |
345 | } | |
346 | qapi_free_SocketAddress(saddr); | |
e2bc625f | 347 | g_free(export); |
75822a12 | 348 | return ret; |
e183ef75 PB |
349 | } |
350 | ||
d9b09f13 PB |
351 | static int nbd_co_readv(BlockDriverState *bs, int64_t sector_num, |
352 | int nb_sectors, QEMUIOVector *qiov) | |
353 | { | |
f53a829b | 354 | return nbd_client_co_readv(bs, sector_num, nb_sectors, qiov); |
d9b09f13 PB |
355 | } |
356 | ||
357 | static int nbd_co_writev(BlockDriverState *bs, int64_t sector_num, | |
358 | int nb_sectors, QEMUIOVector *qiov) | |
359 | { | |
f53a829b | 360 | return nbd_client_co_writev(bs, sector_num, nb_sectors, qiov); |
d9b09f13 PB |
361 | } |
362 | ||
1486d04a PB |
363 | static int nbd_co_flush(BlockDriverState *bs) |
364 | { | |
f53a829b | 365 | return nbd_client_co_flush(bs); |
1486d04a PB |
366 | } |
367 | ||
fa21e6fa DL |
368 | static void nbd_refresh_limits(BlockDriverState *bs, Error **errp) |
369 | { | |
370 | bs->bl.max_discard = UINT32_MAX >> BDRV_SECTOR_BITS; | |
371 | bs->bl.max_transfer_length = UINT32_MAX >> BDRV_SECTOR_BITS; | |
372 | } | |
373 | ||
7a706633 PB |
374 | static int nbd_co_discard(BlockDriverState *bs, int64_t sector_num, |
375 | int nb_sectors) | |
376 | { | |
f53a829b | 377 | return nbd_client_co_discard(bs, sector_num, nb_sectors); |
7a706633 PB |
378 | } |
379 | ||
75818250 TS |
380 | static void nbd_close(BlockDriverState *bs) |
381 | { | |
f53a829b | 382 | nbd_client_close(bs); |
75818250 TS |
383 | } |
384 | ||
385 | static int64_t nbd_getlength(BlockDriverState *bs) | |
386 | { | |
387 | BDRVNBDState *s = bs->opaque; | |
388 | ||
2302c1ca | 389 | return s->client.size; |
75818250 TS |
390 | } |
391 | ||
69447cd8 SH |
392 | static void nbd_detach_aio_context(BlockDriverState *bs) |
393 | { | |
f53a829b | 394 | nbd_client_detach_aio_context(bs); |
69447cd8 SH |
395 | } |
396 | ||
397 | static void nbd_attach_aio_context(BlockDriverState *bs, | |
398 | AioContext *new_context) | |
399 | { | |
f53a829b | 400 | nbd_client_attach_aio_context(bs, new_context); |
69447cd8 SH |
401 | } |
402 | ||
4cdd01d3 | 403 | static void nbd_refresh_filename(BlockDriverState *bs, QDict *options) |
2019d68b | 404 | { |
2019d68b | 405 | QDict *opts = qdict_new(); |
4cdd01d3 KW |
406 | const char *path = qdict_get_try_str(options, "path"); |
407 | const char *host = qdict_get_try_str(options, "host"); | |
408 | const char *port = qdict_get_try_str(options, "port"); | |
409 | const char *export = qdict_get_try_str(options, "export"); | |
75822a12 | 410 | const char *tlscreds = qdict_get_try_str(options, "tls-creds"); |
2019d68b HR |
411 | |
412 | qdict_put_obj(opts, "driver", QOBJECT(qstring_from_str("nbd"))); | |
413 | ||
ec0de768 | 414 | if (path && export) { |
2019d68b | 415 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
ec0de768 HR |
416 | "nbd+unix:///%s?socket=%s", export, path); |
417 | } else if (path && !export) { | |
2019d68b | 418 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
ec0de768 HR |
419 | "nbd+unix://?socket=%s", path); |
420 | } else if (!path && export && port) { | |
421 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), | |
422 | "nbd://%s:%s/%s", host, port, export); | |
423 | } else if (!path && export && !port) { | |
424 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), | |
425 | "nbd://%s/%s", host, export); | |
426 | } else if (!path && !export && port) { | |
427 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), | |
428 | "nbd://%s:%s", host, port); | |
429 | } else if (!path && !export && !port) { | |
2019d68b | 430 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
ec0de768 HR |
431 | "nbd://%s", host); |
432 | } | |
433 | ||
434 | if (path) { | |
435 | qdict_put_obj(opts, "path", QOBJECT(qstring_from_str(path))); | |
436 | } else if (port) { | |
2019d68b HR |
437 | qdict_put_obj(opts, "host", QOBJECT(qstring_from_str(host))); |
438 | qdict_put_obj(opts, "port", QOBJECT(qstring_from_str(port))); | |
ec0de768 HR |
439 | } else { |
440 | qdict_put_obj(opts, "host", QOBJECT(qstring_from_str(host))); | |
441 | } | |
442 | if (export) { | |
443 | qdict_put_obj(opts, "export", QOBJECT(qstring_from_str(export))); | |
2019d68b | 444 | } |
75822a12 DB |
445 | if (tlscreds) { |
446 | qdict_put_obj(opts, "tls-creds", QOBJECT(qstring_from_str(tlscreds))); | |
447 | } | |
2019d68b HR |
448 | |
449 | bs->full_open_options = opts; | |
450 | } | |
451 | ||
5efa9d5a | 452 | static BlockDriver bdrv_nbd = { |
69447cd8 SH |
453 | .format_name = "nbd", |
454 | .protocol_name = "nbd", | |
455 | .instance_size = sizeof(BDRVNBDState), | |
456 | .bdrv_parse_filename = nbd_parse_filename, | |
457 | .bdrv_file_open = nbd_open, | |
458 | .bdrv_co_readv = nbd_co_readv, | |
459 | .bdrv_co_writev = nbd_co_writev, | |
460 | .bdrv_close = nbd_close, | |
461 | .bdrv_co_flush_to_os = nbd_co_flush, | |
462 | .bdrv_co_discard = nbd_co_discard, | |
fa21e6fa | 463 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
464 | .bdrv_getlength = nbd_getlength, |
465 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
466 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 467 | .bdrv_refresh_filename = nbd_refresh_filename, |
1d7d2a9d PB |
468 | }; |
469 | ||
470 | static BlockDriver bdrv_nbd_tcp = { | |
69447cd8 SH |
471 | .format_name = "nbd", |
472 | .protocol_name = "nbd+tcp", | |
473 | .instance_size = sizeof(BDRVNBDState), | |
474 | .bdrv_parse_filename = nbd_parse_filename, | |
475 | .bdrv_file_open = nbd_open, | |
476 | .bdrv_co_readv = nbd_co_readv, | |
477 | .bdrv_co_writev = nbd_co_writev, | |
478 | .bdrv_close = nbd_close, | |
479 | .bdrv_co_flush_to_os = nbd_co_flush, | |
480 | .bdrv_co_discard = nbd_co_discard, | |
fa21e6fa | 481 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
482 | .bdrv_getlength = nbd_getlength, |
483 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
484 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 485 | .bdrv_refresh_filename = nbd_refresh_filename, |
1d7d2a9d PB |
486 | }; |
487 | ||
488 | static BlockDriver bdrv_nbd_unix = { | |
69447cd8 SH |
489 | .format_name = "nbd", |
490 | .protocol_name = "nbd+unix", | |
491 | .instance_size = sizeof(BDRVNBDState), | |
492 | .bdrv_parse_filename = nbd_parse_filename, | |
493 | .bdrv_file_open = nbd_open, | |
494 | .bdrv_co_readv = nbd_co_readv, | |
495 | .bdrv_co_writev = nbd_co_writev, | |
496 | .bdrv_close = nbd_close, | |
497 | .bdrv_co_flush_to_os = nbd_co_flush, | |
498 | .bdrv_co_discard = nbd_co_discard, | |
fa21e6fa | 499 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
500 | .bdrv_getlength = nbd_getlength, |
501 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
502 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 503 | .bdrv_refresh_filename = nbd_refresh_filename, |
75818250 | 504 | }; |
5efa9d5a AL |
505 | |
506 | static void bdrv_nbd_init(void) | |
507 | { | |
508 | bdrv_register(&bdrv_nbd); | |
1d7d2a9d PB |
509 | bdrv_register(&bdrv_nbd_tcp); |
510 | bdrv_register(&bdrv_nbd_unix); | |
5efa9d5a AL |
511 | } |
512 | ||
513 | block_init(bdrv_nbd_init); |