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Commit | Line | Data |
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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" |
da34e65c | 31 | #include "qapi/error.h" |
1de7afc9 | 32 | #include "qemu/uri.h" |
737e150e | 33 | #include "block/block_int.h" |
1de7afc9 | 34 | #include "qemu/module.h" |
2019d68b | 35 | #include "qapi/qmp/qdict.h" |
f53a1feb KW |
36 | #include "qapi/qmp/qjson.h" |
37 | #include "qapi/qmp/qint.h" | |
2019d68b | 38 | #include "qapi/qmp/qstring.h" |
f348b6d1 | 39 | #include "qemu/cutils.h" |
75818250 | 40 | |
1d45f8b5 LV |
41 | #define EN_OPTSTR ":exportname=" |
42 | ||
75818250 | 43 | typedef struct BDRVNBDState { |
2302c1ca | 44 | NbdClientSession client; |
03504d05 HR |
45 | |
46 | /* For nbd_refresh_filename() */ | |
47 | char *path, *host, *port, *export, *tlscredsid; | |
75818250 TS |
48 | } BDRVNBDState; |
49 | ||
f53a1feb | 50 | static int nbd_parse_uri(const char *filename, QDict *options) |
1d7d2a9d PB |
51 | { |
52 | URI *uri; | |
53 | const char *p; | |
54 | QueryParams *qp = NULL; | |
55 | int ret = 0; | |
f53a1feb | 56 | bool is_unix; |
1d7d2a9d PB |
57 | |
58 | uri = uri_parse(filename); | |
59 | if (!uri) { | |
60 | return -EINVAL; | |
61 | } | |
62 | ||
63 | /* transport */ | |
64 | if (!strcmp(uri->scheme, "nbd")) { | |
f53a1feb | 65 | is_unix = false; |
1d7d2a9d | 66 | } else if (!strcmp(uri->scheme, "nbd+tcp")) { |
f53a1feb | 67 | is_unix = false; |
1d7d2a9d | 68 | } else if (!strcmp(uri->scheme, "nbd+unix")) { |
f53a1feb | 69 | is_unix = true; |
1d7d2a9d PB |
70 | } else { |
71 | ret = -EINVAL; | |
72 | goto out; | |
73 | } | |
74 | ||
75 | p = uri->path ? uri->path : "/"; | |
76 | p += strspn(p, "/"); | |
77 | if (p[0]) { | |
f53a1feb | 78 | qdict_put(options, "export", qstring_from_str(p)); |
1d7d2a9d PB |
79 | } |
80 | ||
81 | qp = query_params_parse(uri->query); | |
f53a1feb | 82 | if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) { |
1d7d2a9d PB |
83 | ret = -EINVAL; |
84 | goto out; | |
85 | } | |
86 | ||
f53a1feb | 87 | if (is_unix) { |
1d7d2a9d PB |
88 | /* nbd+unix:///export?socket=path */ |
89 | if (uri->server || uri->port || strcmp(qp->p[0].name, "socket")) { | |
90 | ret = -EINVAL; | |
91 | goto out; | |
92 | } | |
f53a1feb | 93 | qdict_put(options, "path", qstring_from_str(qp->p[0].value)); |
1d7d2a9d | 94 | } else { |
23307908 | 95 | QString *host; |
bebbf7fa | 96 | /* nbd[+tcp]://host[:port]/export */ |
1d7d2a9d PB |
97 | if (!uri->server) { |
98 | ret = -EINVAL; | |
99 | goto out; | |
100 | } | |
f17c90be | 101 | |
23307908 JT |
102 | /* strip braces from literal IPv6 address */ |
103 | if (uri->server[0] == '[') { | |
104 | host = qstring_from_substr(uri->server, 1, | |
105 | strlen(uri->server) - 2); | |
106 | } else { | |
107 | host = qstring_from_str(uri->server); | |
108 | } | |
109 | ||
110 | qdict_put(options, "host", host); | |
bebbf7fa KW |
111 | if (uri->port) { |
112 | char* port_str = g_strdup_printf("%d", uri->port); | |
113 | qdict_put(options, "port", qstring_from_str(port_str)); | |
114 | g_free(port_str); | |
115 | } | |
1d7d2a9d PB |
116 | } |
117 | ||
118 | out: | |
119 | if (qp) { | |
120 | query_params_free(qp); | |
121 | } | |
122 | uri_free(uri); | |
123 | return ret; | |
124 | } | |
125 | ||
6963a30d KW |
126 | static void nbd_parse_filename(const char *filename, QDict *options, |
127 | Error **errp) | |
75818250 | 128 | { |
1d45f8b5 | 129 | char *file; |
33897dc7 NT |
130 | char *export_name; |
131 | const char *host_spec; | |
75818250 | 132 | const char *unixpath; |
75818250 | 133 | |
681e7ad0 KW |
134 | if (qdict_haskey(options, "host") |
135 | || qdict_haskey(options, "port") | |
136 | || qdict_haskey(options, "path")) | |
137 | { | |
138 | error_setg(errp, "host/port/path and a file name may not be specified " | |
139 | "at the same time"); | |
140 | return; | |
141 | } | |
142 | ||
1d7d2a9d | 143 | if (strstr(filename, "://")) { |
6963a30d KW |
144 | int ret = nbd_parse_uri(filename, options); |
145 | if (ret < 0) { | |
146 | error_setg(errp, "No valid URL specified"); | |
147 | } | |
148 | return; | |
1d7d2a9d PB |
149 | } |
150 | ||
7267c094 | 151 | file = g_strdup(filename); |
1d45f8b5 | 152 | |
33897dc7 NT |
153 | export_name = strstr(file, EN_OPTSTR); |
154 | if (export_name) { | |
155 | if (export_name[strlen(EN_OPTSTR)] == 0) { | |
1d45f8b5 LV |
156 | goto out; |
157 | } | |
33897dc7 NT |
158 | export_name[0] = 0; /* truncate 'file' */ |
159 | export_name += strlen(EN_OPTSTR); | |
f53a1feb KW |
160 | |
161 | qdict_put(options, "export", qstring_from_str(export_name)); | |
1d45f8b5 LV |
162 | } |
163 | ||
33897dc7 NT |
164 | /* extract the host_spec - fail if it's not nbd:... */ |
165 | if (!strstart(file, "nbd:", &host_spec)) { | |
6963a30d | 166 | error_setg(errp, "File name string for NBD must start with 'nbd:'"); |
1d45f8b5 LV |
167 | goto out; |
168 | } | |
75818250 | 169 | |
f53a1feb | 170 | if (!*host_spec) { |
f53a1feb KW |
171 | goto out; |
172 | } | |
173 | ||
33897dc7 NT |
174 | /* are we a UNIX or TCP socket? */ |
175 | if (strstart(host_spec, "unix:", &unixpath)) { | |
f53a1feb | 176 | qdict_put(options, "path", qstring_from_str(unixpath)); |
75818250 | 177 | } else { |
f53a1feb KW |
178 | InetSocketAddress *addr = NULL; |
179 | ||
6963a30d | 180 | addr = inet_parse(host_spec, errp); |
92de9012 | 181 | if (!addr) { |
f17c90be KW |
182 | goto out; |
183 | } | |
75818250 | 184 | |
f53a1feb KW |
185 | qdict_put(options, "host", qstring_from_str(addr->host)); |
186 | qdict_put(options, "port", qstring_from_str(addr->port)); | |
187 | qapi_free_InetSocketAddress(addr); | |
188 | } | |
75818250 | 189 | |
33897dc7 | 190 | out: |
7267c094 | 191 | g_free(file); |
f53a1feb KW |
192 | } |
193 | ||
03504d05 | 194 | static SocketAddress *nbd_config(BDRVNBDState *s, QemuOpts *opts, Error **errp) |
f53a1feb | 195 | { |
7a5ed437 | 196 | SocketAddress *saddr; |
f53a1feb | 197 | |
03504d05 HR |
198 | s->path = g_strdup(qemu_opt_get(opts, "path")); |
199 | s->host = g_strdup(qemu_opt_get(opts, "host")); | |
442045cb | 200 | s->port = g_strdup(qemu_opt_get(opts, "port")); |
03504d05 HR |
201 | |
202 | if (!s->path == !s->host) { | |
203 | if (s->path) { | |
82d73014 | 204 | error_setg(errp, "path and host may not be used at the same time"); |
a69d9af4 | 205 | } else { |
82d73014 | 206 | error_setg(errp, "one of path and host must be specified"); |
681e7ad0 | 207 | } |
7a5ed437 | 208 | return NULL; |
33897dc7 | 209 | } |
442045cb HR |
210 | if (s->port && !s->host) { |
211 | error_setg(errp, "port may not be used without host"); | |
212 | return NULL; | |
213 | } | |
f53a1feb | 214 | |
7a5ed437 | 215 | saddr = g_new0(SocketAddress, 1); |
f53a1feb | 216 | |
03504d05 | 217 | if (s->path) { |
0399293e | 218 | UnixSocketAddress *q_unix; |
6a8f9661 | 219 | saddr->type = SOCKET_ADDRESS_KIND_UNIX; |
32bafa8f | 220 | q_unix = saddr->u.q_unix.data = g_new0(UnixSocketAddress, 1); |
03504d05 | 221 | q_unix->path = g_strdup(s->path); |
7a5ed437 | 222 | } else { |
0399293e | 223 | InetSocketAddress *inet; |
03504d05 | 224 | |
6a8f9661 | 225 | saddr->type = SOCKET_ADDRESS_KIND_INET; |
32bafa8f | 226 | inet = saddr->u.inet.data = g_new0(InetSocketAddress, 1); |
03504d05 HR |
227 | inet->host = g_strdup(s->host); |
228 | inet->port = g_strdup(s->port); | |
7ccc44fd | 229 | if (!inet->port) { |
0399293e | 230 | inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT); |
7a5ed437 | 231 | } |
f53a1feb KW |
232 | } |
233 | ||
6a8f9661 | 234 | s->client.is_unix = saddr->type == SOCKET_ADDRESS_KIND_UNIX; |
bebbf7fa | 235 | |
03504d05 | 236 | s->export = g_strdup(qemu_opt_get(opts, "export")); |
7a5ed437 DB |
237 | |
238 | return saddr; | |
33897dc7 | 239 | } |
1d45f8b5 | 240 | |
f53a829b HR |
241 | NbdClientSession *nbd_get_client_session(BlockDriverState *bs) |
242 | { | |
243 | BDRVNBDState *s = bs->opaque; | |
244 | return &s->client; | |
245 | } | |
246 | ||
064097d9 DB |
247 | static QIOChannelSocket *nbd_establish_connection(SocketAddress *saddr, |
248 | Error **errp) | |
33897dc7 | 249 | { |
064097d9 DB |
250 | QIOChannelSocket *sioc; |
251 | Error *local_err = NULL; | |
75818250 | 252 | |
064097d9 | 253 | sioc = qio_channel_socket_new(); |
75818250 | 254 | |
064097d9 DB |
255 | qio_channel_socket_connect_sync(sioc, |
256 | saddr, | |
257 | &local_err); | |
258 | if (local_err) { | |
259 | error_propagate(errp, local_err); | |
260 | return NULL; | |
1d45f8b5 | 261 | } |
75818250 | 262 | |
064097d9 | 263 | qio_channel_set_delay(QIO_CHANNEL(sioc), false); |
7a5ed437 | 264 | |
064097d9 | 265 | return sioc; |
33897dc7 NT |
266 | } |
267 | ||
75822a12 DB |
268 | |
269 | static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, Error **errp) | |
270 | { | |
271 | Object *obj; | |
272 | QCryptoTLSCreds *creds; | |
273 | ||
274 | obj = object_resolve_path_component( | |
275 | object_get_objects_root(), id); | |
276 | if (!obj) { | |
277 | error_setg(errp, "No TLS credentials with id '%s'", | |
278 | id); | |
279 | return NULL; | |
280 | } | |
281 | creds = (QCryptoTLSCreds *) | |
282 | object_dynamic_cast(obj, TYPE_QCRYPTO_TLS_CREDS); | |
283 | if (!creds) { | |
284 | error_setg(errp, "Object with id '%s' is not TLS credentials", | |
285 | id); | |
286 | return NULL; | |
287 | } | |
288 | ||
289 | if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { | |
290 | error_setg(errp, | |
291 | "Expecting TLS credentials with a client endpoint"); | |
292 | return NULL; | |
293 | } | |
294 | object_ref(obj); | |
295 | return creds; | |
296 | } | |
297 | ||
298 | ||
7ccc44fd HR |
299 | static QemuOptsList nbd_runtime_opts = { |
300 | .name = "nbd", | |
301 | .head = QTAILQ_HEAD_INITIALIZER(nbd_runtime_opts.head), | |
302 | .desc = { | |
303 | { | |
304 | .name = "host", | |
305 | .type = QEMU_OPT_STRING, | |
306 | .help = "TCP host to connect to", | |
307 | }, | |
308 | { | |
309 | .name = "port", | |
310 | .type = QEMU_OPT_STRING, | |
311 | .help = "TCP port to connect to", | |
312 | }, | |
313 | { | |
314 | .name = "path", | |
315 | .type = QEMU_OPT_STRING, | |
316 | .help = "Unix socket path to connect to", | |
317 | }, | |
318 | { | |
319 | .name = "export", | |
320 | .type = QEMU_OPT_STRING, | |
321 | .help = "Name of the NBD export to open", | |
322 | }, | |
323 | { | |
324 | .name = "tls-creds", | |
325 | .type = QEMU_OPT_STRING, | |
326 | .help = "ID of the TLS credentials to use", | |
327 | }, | |
328 | }, | |
329 | }; | |
330 | ||
015a1036 HR |
331 | static int nbd_open(BlockDriverState *bs, QDict *options, int flags, |
332 | Error **errp) | |
33897dc7 NT |
333 | { |
334 | BDRVNBDState *s = bs->opaque; | |
7ccc44fd HR |
335 | QemuOpts *opts = NULL; |
336 | Error *local_err = NULL; | |
75822a12 | 337 | QIOChannelSocket *sioc = NULL; |
7ccc44fd | 338 | SocketAddress *saddr = NULL; |
75822a12 DB |
339 | QCryptoTLSCreds *tlscreds = NULL; |
340 | const char *hostname = NULL; | |
341 | int ret = -EINVAL; | |
ae255e52 | 342 | |
7ccc44fd HR |
343 | opts = qemu_opts_create(&nbd_runtime_opts, NULL, 0, &error_abort); |
344 | qemu_opts_absorb_qdict(opts, options, &local_err); | |
345 | if (local_err) { | |
346 | error_propagate(errp, local_err); | |
347 | goto error; | |
348 | } | |
349 | ||
33897dc7 | 350 | /* Pop the config into our state object. Exit if invalid. */ |
03504d05 | 351 | saddr = nbd_config(s, opts, errp); |
7a5ed437 | 352 | if (!saddr) { |
75822a12 DB |
353 | goto error; |
354 | } | |
355 | ||
03504d05 HR |
356 | s->tlscredsid = g_strdup(qemu_opt_get(opts, "tls-creds")); |
357 | if (s->tlscredsid) { | |
358 | tlscreds = nbd_get_tls_creds(s->tlscredsid, errp); | |
75822a12 DB |
359 | if (!tlscreds) { |
360 | goto error; | |
361 | } | |
362 | ||
363 | if (saddr->type != SOCKET_ADDRESS_KIND_INET) { | |
364 | error_setg(errp, "TLS only supported over IP sockets"); | |
365 | goto error; | |
366 | } | |
32bafa8f | 367 | hostname = saddr->u.inet.data->host; |
33897dc7 NT |
368 | } |
369 | ||
370 | /* establish TCP connection, return error if it fails | |
371 | * TODO: Configurable retry-until-timeout behaviour. | |
372 | */ | |
064097d9 | 373 | sioc = nbd_establish_connection(saddr, errp); |
064097d9 | 374 | if (!sioc) { |
75822a12 DB |
375 | ret = -ECONNREFUSED; |
376 | goto error; | |
2c7989a9 PB |
377 | } |
378 | ||
2302c1ca | 379 | /* NBD handshake */ |
03504d05 | 380 | ret = nbd_client_init(bs, sioc, s->export, |
75822a12 DB |
381 | tlscreds, hostname, errp); |
382 | error: | |
383 | if (sioc) { | |
384 | object_unref(OBJECT(sioc)); | |
385 | } | |
386 | if (tlscreds) { | |
387 | object_unref(OBJECT(tlscreds)); | |
388 | } | |
03504d05 HR |
389 | if (ret < 0) { |
390 | g_free(s->path); | |
391 | g_free(s->host); | |
392 | g_free(s->port); | |
393 | g_free(s->export); | |
394 | g_free(s->tlscredsid); | |
395 | } | |
75822a12 | 396 | qapi_free_SocketAddress(saddr); |
7ccc44fd | 397 | qemu_opts_del(opts); |
75822a12 | 398 | return ret; |
e183ef75 PB |
399 | } |
400 | ||
1486d04a PB |
401 | static int nbd_co_flush(BlockDriverState *bs) |
402 | { | |
f53a829b | 403 | return nbd_client_co_flush(bs); |
1486d04a PB |
404 | } |
405 | ||
fa21e6fa DL |
406 | static void nbd_refresh_limits(BlockDriverState *bs, Error **errp) |
407 | { | |
b9f7855a | 408 | bs->bl.max_pdiscard = NBD_MAX_BUFFER_SIZE; |
5def6b80 | 409 | bs->bl.max_transfer = NBD_MAX_BUFFER_SIZE; |
fa21e6fa DL |
410 | } |
411 | ||
75818250 TS |
412 | static void nbd_close(BlockDriverState *bs) |
413 | { | |
03504d05 HR |
414 | BDRVNBDState *s = bs->opaque; |
415 | ||
f53a829b | 416 | nbd_client_close(bs); |
03504d05 HR |
417 | |
418 | g_free(s->path); | |
419 | g_free(s->host); | |
420 | g_free(s->port); | |
421 | g_free(s->export); | |
422 | g_free(s->tlscredsid); | |
75818250 TS |
423 | } |
424 | ||
425 | static int64_t nbd_getlength(BlockDriverState *bs) | |
426 | { | |
427 | BDRVNBDState *s = bs->opaque; | |
428 | ||
2302c1ca | 429 | return s->client.size; |
75818250 TS |
430 | } |
431 | ||
69447cd8 SH |
432 | static void nbd_detach_aio_context(BlockDriverState *bs) |
433 | { | |
f53a829b | 434 | nbd_client_detach_aio_context(bs); |
69447cd8 SH |
435 | } |
436 | ||
437 | static void nbd_attach_aio_context(BlockDriverState *bs, | |
438 | AioContext *new_context) | |
439 | { | |
f53a829b | 440 | nbd_client_attach_aio_context(bs, new_context); |
69447cd8 SH |
441 | } |
442 | ||
4cdd01d3 | 443 | static void nbd_refresh_filename(BlockDriverState *bs, QDict *options) |
2019d68b | 444 | { |
03504d05 | 445 | BDRVNBDState *s = bs->opaque; |
2019d68b | 446 | QDict *opts = qdict_new(); |
7edca338 | 447 | const char *port = s->port ?: stringify(NBD_DEFAULT_PORT); |
2019d68b | 448 | |
fcfcd8ff | 449 | qdict_put(opts, "driver", qstring_from_str("nbd")); |
2019d68b | 450 | |
03504d05 | 451 | if (s->path && s->export) { |
2019d68b | 452 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
03504d05 HR |
453 | "nbd+unix:///%s?socket=%s", s->export, s->path); |
454 | } else if (s->path && !s->export) { | |
2019d68b | 455 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
03504d05 | 456 | "nbd+unix://?socket=%s", s->path); |
7edca338 | 457 | } else if (!s->path && s->export) { |
ec0de768 | 458 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
7edca338 HR |
459 | "nbd://%s:%s/%s", s->host, port, s->export); |
460 | } else if (!s->path && !s->export) { | |
ec0de768 | 461 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
7edca338 | 462 | "nbd://%s:%s", s->host, port); |
ec0de768 HR |
463 | } |
464 | ||
03504d05 | 465 | if (s->path) { |
fcfcd8ff | 466 | qdict_put(opts, "path", qstring_from_str(s->path)); |
ec0de768 | 467 | } else { |
fcfcd8ff HR |
468 | qdict_put(opts, "host", qstring_from_str(s->host)); |
469 | qdict_put(opts, "port", qstring_from_str(port)); | |
ec0de768 | 470 | } |
03504d05 | 471 | if (s->export) { |
fcfcd8ff | 472 | qdict_put(opts, "export", qstring_from_str(s->export)); |
2019d68b | 473 | } |
03504d05 | 474 | if (s->tlscredsid) { |
fcfcd8ff | 475 | qdict_put(opts, "tls-creds", qstring_from_str(s->tlscredsid)); |
75822a12 | 476 | } |
2019d68b HR |
477 | |
478 | bs->full_open_options = opts; | |
479 | } | |
480 | ||
5efa9d5a | 481 | static BlockDriver bdrv_nbd = { |
69447cd8 SH |
482 | .format_name = "nbd", |
483 | .protocol_name = "nbd", | |
484 | .instance_size = sizeof(BDRVNBDState), | |
485 | .bdrv_parse_filename = nbd_parse_filename, | |
486 | .bdrv_file_open = nbd_open, | |
70c4fb26 EB |
487 | .bdrv_co_preadv = nbd_client_co_preadv, |
488 | .bdrv_co_pwritev = nbd_client_co_pwritev, | |
69447cd8 SH |
489 | .bdrv_close = nbd_close, |
490 | .bdrv_co_flush_to_os = nbd_co_flush, | |
447e57c3 | 491 | .bdrv_co_pdiscard = nbd_client_co_pdiscard, |
fa21e6fa | 492 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
493 | .bdrv_getlength = nbd_getlength, |
494 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
495 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 496 | .bdrv_refresh_filename = nbd_refresh_filename, |
1d7d2a9d PB |
497 | }; |
498 | ||
499 | static BlockDriver bdrv_nbd_tcp = { | |
69447cd8 SH |
500 | .format_name = "nbd", |
501 | .protocol_name = "nbd+tcp", | |
502 | .instance_size = sizeof(BDRVNBDState), | |
503 | .bdrv_parse_filename = nbd_parse_filename, | |
504 | .bdrv_file_open = nbd_open, | |
70c4fb26 EB |
505 | .bdrv_co_preadv = nbd_client_co_preadv, |
506 | .bdrv_co_pwritev = nbd_client_co_pwritev, | |
69447cd8 SH |
507 | .bdrv_close = nbd_close, |
508 | .bdrv_co_flush_to_os = nbd_co_flush, | |
447e57c3 | 509 | .bdrv_co_pdiscard = nbd_client_co_pdiscard, |
fa21e6fa | 510 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
511 | .bdrv_getlength = nbd_getlength, |
512 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
513 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 514 | .bdrv_refresh_filename = nbd_refresh_filename, |
1d7d2a9d PB |
515 | }; |
516 | ||
517 | static BlockDriver bdrv_nbd_unix = { | |
69447cd8 SH |
518 | .format_name = "nbd", |
519 | .protocol_name = "nbd+unix", | |
520 | .instance_size = sizeof(BDRVNBDState), | |
521 | .bdrv_parse_filename = nbd_parse_filename, | |
522 | .bdrv_file_open = nbd_open, | |
70c4fb26 EB |
523 | .bdrv_co_preadv = nbd_client_co_preadv, |
524 | .bdrv_co_pwritev = nbd_client_co_pwritev, | |
69447cd8 SH |
525 | .bdrv_close = nbd_close, |
526 | .bdrv_co_flush_to_os = nbd_co_flush, | |
447e57c3 | 527 | .bdrv_co_pdiscard = nbd_client_co_pdiscard, |
fa21e6fa | 528 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
529 | .bdrv_getlength = nbd_getlength, |
530 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
531 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 532 | .bdrv_refresh_filename = nbd_refresh_filename, |
75818250 | 533 | }; |
5efa9d5a AL |
534 | |
535 | static void bdrv_nbd_init(void) | |
536 | { | |
537 | bdrv_register(&bdrv_nbd); | |
1d7d2a9d PB |
538 | bdrv_register(&bdrv_nbd_tcp); |
539 | bdrv_register(&bdrv_nbd_unix); | |
5efa9d5a AL |
540 | } |
541 | ||
542 | block_init(bdrv_nbd_init); |