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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" |
491d6c7c HR |
35 | #include "qapi-visit.h" |
36 | #include "qapi/qobject-input-visitor.h" | |
37 | #include "qapi/qobject-output-visitor.h" | |
2019d68b | 38 | #include "qapi/qmp/qdict.h" |
f53a1feb KW |
39 | #include "qapi/qmp/qjson.h" |
40 | #include "qapi/qmp/qint.h" | |
2019d68b | 41 | #include "qapi/qmp/qstring.h" |
f348b6d1 | 42 | #include "qemu/cutils.h" |
75818250 | 43 | |
1d45f8b5 LV |
44 | #define EN_OPTSTR ":exportname=" |
45 | ||
75818250 | 46 | typedef struct BDRVNBDState { |
10676b81 | 47 | NBDClientSession client; |
03504d05 HR |
48 | |
49 | /* For nbd_refresh_filename() */ | |
491d6c7c HR |
50 | SocketAddress *saddr; |
51 | char *export, *tlscredsid; | |
75818250 TS |
52 | } BDRVNBDState; |
53 | ||
f53a1feb | 54 | static int nbd_parse_uri(const char *filename, QDict *options) |
1d7d2a9d PB |
55 | { |
56 | URI *uri; | |
57 | const char *p; | |
58 | QueryParams *qp = NULL; | |
59 | int ret = 0; | |
f53a1feb | 60 | bool is_unix; |
1d7d2a9d PB |
61 | |
62 | uri = uri_parse(filename); | |
63 | if (!uri) { | |
64 | return -EINVAL; | |
65 | } | |
66 | ||
67 | /* transport */ | |
68 | if (!strcmp(uri->scheme, "nbd")) { | |
f53a1feb | 69 | is_unix = false; |
1d7d2a9d | 70 | } else if (!strcmp(uri->scheme, "nbd+tcp")) { |
f53a1feb | 71 | is_unix = false; |
1d7d2a9d | 72 | } else if (!strcmp(uri->scheme, "nbd+unix")) { |
f53a1feb | 73 | is_unix = true; |
1d7d2a9d PB |
74 | } else { |
75 | ret = -EINVAL; | |
76 | goto out; | |
77 | } | |
78 | ||
79 | p = uri->path ? uri->path : "/"; | |
80 | p += strspn(p, "/"); | |
81 | if (p[0]) { | |
f53a1feb | 82 | qdict_put(options, "export", qstring_from_str(p)); |
1d7d2a9d PB |
83 | } |
84 | ||
85 | qp = query_params_parse(uri->query); | |
f53a1feb | 86 | if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) { |
1d7d2a9d PB |
87 | ret = -EINVAL; |
88 | goto out; | |
89 | } | |
90 | ||
f53a1feb | 91 | if (is_unix) { |
1d7d2a9d PB |
92 | /* nbd+unix:///export?socket=path */ |
93 | if (uri->server || uri->port || strcmp(qp->p[0].name, "socket")) { | |
94 | ret = -EINVAL; | |
95 | goto out; | |
96 | } | |
f84d431b HR |
97 | qdict_put(options, "server.type", qstring_from_str("unix")); |
98 | qdict_put(options, "server.data.path", | |
99 | qstring_from_str(qp->p[0].value)); | |
1d7d2a9d | 100 | } else { |
23307908 | 101 | QString *host; |
f84d431b HR |
102 | char *port_str; |
103 | ||
bebbf7fa | 104 | /* nbd[+tcp]://host[:port]/export */ |
1d7d2a9d PB |
105 | if (!uri->server) { |
106 | ret = -EINVAL; | |
107 | goto out; | |
108 | } | |
f17c90be | 109 | |
23307908 JT |
110 | /* strip braces from literal IPv6 address */ |
111 | if (uri->server[0] == '[') { | |
112 | host = qstring_from_substr(uri->server, 1, | |
113 | strlen(uri->server) - 2); | |
114 | } else { | |
115 | host = qstring_from_str(uri->server); | |
116 | } | |
117 | ||
f84d431b HR |
118 | qdict_put(options, "server.type", qstring_from_str("inet")); |
119 | qdict_put(options, "server.data.host", host); | |
120 | ||
121 | port_str = g_strdup_printf("%d", uri->port ?: NBD_DEFAULT_PORT); | |
122 | qdict_put(options, "server.data.port", qstring_from_str(port_str)); | |
123 | g_free(port_str); | |
1d7d2a9d PB |
124 | } |
125 | ||
126 | out: | |
127 | if (qp) { | |
128 | query_params_free(qp); | |
129 | } | |
130 | uri_free(uri); | |
131 | return ret; | |
132 | } | |
133 | ||
48c38e0b HR |
134 | static bool nbd_has_filename_options_conflict(QDict *options, Error **errp) |
135 | { | |
136 | const QDictEntry *e; | |
137 | ||
138 | for (e = qdict_first(options); e; e = qdict_next(options, e)) { | |
139 | if (!strcmp(e->key, "host") || | |
140 | !strcmp(e->key, "port") || | |
141 | !strcmp(e->key, "path") || | |
491d6c7c HR |
142 | !strcmp(e->key, "export") || |
143 | strstart(e->key, "server.", NULL)) | |
48c38e0b HR |
144 | { |
145 | error_setg(errp, "Option '%s' cannot be used with a file name", | |
146 | e->key); | |
147 | return true; | |
148 | } | |
149 | } | |
150 | ||
151 | return false; | |
152 | } | |
153 | ||
6963a30d KW |
154 | static void nbd_parse_filename(const char *filename, QDict *options, |
155 | Error **errp) | |
75818250 | 156 | { |
1d45f8b5 | 157 | char *file; |
33897dc7 NT |
158 | char *export_name; |
159 | const char *host_spec; | |
75818250 | 160 | const char *unixpath; |
75818250 | 161 | |
48c38e0b | 162 | if (nbd_has_filename_options_conflict(options, errp)) { |
681e7ad0 KW |
163 | return; |
164 | } | |
165 | ||
1d7d2a9d | 166 | if (strstr(filename, "://")) { |
6963a30d KW |
167 | int ret = nbd_parse_uri(filename, options); |
168 | if (ret < 0) { | |
169 | error_setg(errp, "No valid URL specified"); | |
170 | } | |
171 | return; | |
1d7d2a9d PB |
172 | } |
173 | ||
7267c094 | 174 | file = g_strdup(filename); |
1d45f8b5 | 175 | |
33897dc7 NT |
176 | export_name = strstr(file, EN_OPTSTR); |
177 | if (export_name) { | |
178 | if (export_name[strlen(EN_OPTSTR)] == 0) { | |
1d45f8b5 LV |
179 | goto out; |
180 | } | |
33897dc7 NT |
181 | export_name[0] = 0; /* truncate 'file' */ |
182 | export_name += strlen(EN_OPTSTR); | |
f53a1feb KW |
183 | |
184 | qdict_put(options, "export", qstring_from_str(export_name)); | |
1d45f8b5 LV |
185 | } |
186 | ||
33897dc7 NT |
187 | /* extract the host_spec - fail if it's not nbd:... */ |
188 | if (!strstart(file, "nbd:", &host_spec)) { | |
6963a30d | 189 | error_setg(errp, "File name string for NBD must start with 'nbd:'"); |
1d45f8b5 LV |
190 | goto out; |
191 | } | |
75818250 | 192 | |
f53a1feb | 193 | if (!*host_spec) { |
f53a1feb KW |
194 | goto out; |
195 | } | |
196 | ||
33897dc7 NT |
197 | /* are we a UNIX or TCP socket? */ |
198 | if (strstart(host_spec, "unix:", &unixpath)) { | |
f84d431b HR |
199 | qdict_put(options, "server.type", qstring_from_str("unix")); |
200 | qdict_put(options, "server.data.path", qstring_from_str(unixpath)); | |
75818250 | 201 | } else { |
f53a1feb KW |
202 | InetSocketAddress *addr = NULL; |
203 | ||
6963a30d | 204 | addr = inet_parse(host_spec, errp); |
92de9012 | 205 | if (!addr) { |
f17c90be KW |
206 | goto out; |
207 | } | |
75818250 | 208 | |
f84d431b HR |
209 | qdict_put(options, "server.type", qstring_from_str("inet")); |
210 | qdict_put(options, "server.data.host", qstring_from_str(addr->host)); | |
211 | qdict_put(options, "server.data.port", qstring_from_str(addr->port)); | |
f53a1feb KW |
212 | qapi_free_InetSocketAddress(addr); |
213 | } | |
75818250 | 214 | |
33897dc7 | 215 | out: |
7267c094 | 216 | g_free(file); |
f53a1feb KW |
217 | } |
218 | ||
491d6c7c HR |
219 | static bool nbd_process_legacy_socket_options(QDict *output_options, |
220 | QemuOpts *legacy_opts, | |
221 | Error **errp) | |
f53a1feb | 222 | { |
491d6c7c HR |
223 | const char *path = qemu_opt_get(legacy_opts, "path"); |
224 | const char *host = qemu_opt_get(legacy_opts, "host"); | |
225 | const char *port = qemu_opt_get(legacy_opts, "port"); | |
226 | const QDictEntry *e; | |
f53a1feb | 227 | |
491d6c7c HR |
228 | if (!path && !host && !port) { |
229 | return true; | |
230 | } | |
03504d05 | 231 | |
491d6c7c HR |
232 | for (e = qdict_first(output_options); e; e = qdict_next(output_options, e)) |
233 | { | |
234 | if (strstart(e->key, "server.", NULL)) { | |
235 | error_setg(errp, "Cannot use 'server' and path/host/port at the " | |
236 | "same time"); | |
237 | return false; | |
681e7ad0 | 238 | } |
33897dc7 | 239 | } |
491d6c7c HR |
240 | |
241 | if (path && host) { | |
242 | error_setg(errp, "path and host may not be used at the same time"); | |
243 | return false; | |
244 | } else if (path) { | |
245 | if (port) { | |
246 | error_setg(errp, "port may not be used without host"); | |
247 | return false; | |
248 | } | |
249 | ||
250 | qdict_put(output_options, "server.type", qstring_from_str("unix")); | |
251 | qdict_put(output_options, "server.data.path", qstring_from_str(path)); | |
252 | } else if (host) { | |
253 | qdict_put(output_options, "server.type", qstring_from_str("inet")); | |
254 | qdict_put(output_options, "server.data.host", qstring_from_str(host)); | |
255 | qdict_put(output_options, "server.data.port", | |
256 | qstring_from_str(port ?: stringify(NBD_DEFAULT_PORT))); | |
442045cb | 257 | } |
f53a1feb | 258 | |
491d6c7c HR |
259 | return true; |
260 | } | |
f53a1feb | 261 | |
491d6c7c HR |
262 | static SocketAddress *nbd_config(BDRVNBDState *s, QDict *options, Error **errp) |
263 | { | |
264 | SocketAddress *saddr = NULL; | |
265 | QDict *addr = NULL; | |
266 | QObject *crumpled_addr = NULL; | |
267 | Visitor *iv = NULL; | |
268 | Error *local_err = NULL; | |
269 | ||
270 | qdict_extract_subqdict(options, &addr, "server."); | |
271 | if (!qdict_size(addr)) { | |
272 | error_setg(errp, "NBD server address missing"); | |
273 | goto done; | |
f53a1feb KW |
274 | } |
275 | ||
491d6c7c HR |
276 | crumpled_addr = qdict_crumple(addr, errp); |
277 | if (!crumpled_addr) { | |
278 | goto done; | |
279 | } | |
bebbf7fa | 280 | |
048abb7b | 281 | iv = qobject_input_visitor_new(crumpled_addr); |
491d6c7c HR |
282 | visit_type_SocketAddress(iv, NULL, &saddr, &local_err); |
283 | if (local_err) { | |
284 | error_propagate(errp, local_err); | |
285 | goto done; | |
286 | } | |
7a5ed437 | 287 | |
491d6c7c HR |
288 | done: |
289 | QDECREF(addr); | |
290 | qobject_decref(crumpled_addr); | |
291 | visit_free(iv); | |
7a5ed437 | 292 | return saddr; |
33897dc7 | 293 | } |
1d45f8b5 | 294 | |
10676b81 | 295 | NBDClientSession *nbd_get_client_session(BlockDriverState *bs) |
f53a829b HR |
296 | { |
297 | BDRVNBDState *s = bs->opaque; | |
298 | return &s->client; | |
299 | } | |
300 | ||
064097d9 DB |
301 | static QIOChannelSocket *nbd_establish_connection(SocketAddress *saddr, |
302 | Error **errp) | |
33897dc7 | 303 | { |
064097d9 DB |
304 | QIOChannelSocket *sioc; |
305 | Error *local_err = NULL; | |
75818250 | 306 | |
064097d9 | 307 | sioc = qio_channel_socket_new(); |
0d73f725 | 308 | qio_channel_set_name(QIO_CHANNEL(sioc), "nbd-client"); |
75818250 | 309 | |
064097d9 DB |
310 | qio_channel_socket_connect_sync(sioc, |
311 | saddr, | |
312 | &local_err); | |
313 | if (local_err) { | |
314 | error_propagate(errp, local_err); | |
315 | return NULL; | |
1d45f8b5 | 316 | } |
75818250 | 317 | |
064097d9 | 318 | qio_channel_set_delay(QIO_CHANNEL(sioc), false); |
7a5ed437 | 319 | |
064097d9 | 320 | return sioc; |
33897dc7 NT |
321 | } |
322 | ||
75822a12 DB |
323 | |
324 | static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, Error **errp) | |
325 | { | |
326 | Object *obj; | |
327 | QCryptoTLSCreds *creds; | |
328 | ||
329 | obj = object_resolve_path_component( | |
330 | object_get_objects_root(), id); | |
331 | if (!obj) { | |
332 | error_setg(errp, "No TLS credentials with id '%s'", | |
333 | id); | |
334 | return NULL; | |
335 | } | |
336 | creds = (QCryptoTLSCreds *) | |
337 | object_dynamic_cast(obj, TYPE_QCRYPTO_TLS_CREDS); | |
338 | if (!creds) { | |
339 | error_setg(errp, "Object with id '%s' is not TLS credentials", | |
340 | id); | |
341 | return NULL; | |
342 | } | |
343 | ||
344 | if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { | |
345 | error_setg(errp, | |
346 | "Expecting TLS credentials with a client endpoint"); | |
347 | return NULL; | |
348 | } | |
349 | object_ref(obj); | |
350 | return creds; | |
351 | } | |
352 | ||
353 | ||
7ccc44fd HR |
354 | static QemuOptsList nbd_runtime_opts = { |
355 | .name = "nbd", | |
356 | .head = QTAILQ_HEAD_INITIALIZER(nbd_runtime_opts.head), | |
357 | .desc = { | |
358 | { | |
359 | .name = "host", | |
360 | .type = QEMU_OPT_STRING, | |
361 | .help = "TCP host to connect to", | |
362 | }, | |
363 | { | |
364 | .name = "port", | |
365 | .type = QEMU_OPT_STRING, | |
366 | .help = "TCP port to connect to", | |
367 | }, | |
368 | { | |
369 | .name = "path", | |
370 | .type = QEMU_OPT_STRING, | |
371 | .help = "Unix socket path to connect to", | |
372 | }, | |
373 | { | |
374 | .name = "export", | |
375 | .type = QEMU_OPT_STRING, | |
376 | .help = "Name of the NBD export to open", | |
377 | }, | |
378 | { | |
379 | .name = "tls-creds", | |
380 | .type = QEMU_OPT_STRING, | |
381 | .help = "ID of the TLS credentials to use", | |
382 | }, | |
383 | }, | |
384 | }; | |
385 | ||
015a1036 HR |
386 | static int nbd_open(BlockDriverState *bs, QDict *options, int flags, |
387 | Error **errp) | |
33897dc7 NT |
388 | { |
389 | BDRVNBDState *s = bs->opaque; | |
7ccc44fd HR |
390 | QemuOpts *opts = NULL; |
391 | Error *local_err = NULL; | |
75822a12 | 392 | QIOChannelSocket *sioc = NULL; |
75822a12 DB |
393 | QCryptoTLSCreds *tlscreds = NULL; |
394 | const char *hostname = NULL; | |
395 | int ret = -EINVAL; | |
ae255e52 | 396 | |
7ccc44fd HR |
397 | opts = qemu_opts_create(&nbd_runtime_opts, NULL, 0, &error_abort); |
398 | qemu_opts_absorb_qdict(opts, options, &local_err); | |
399 | if (local_err) { | |
400 | error_propagate(errp, local_err); | |
401 | goto error; | |
402 | } | |
403 | ||
491d6c7c HR |
404 | /* Translate @host, @port, and @path to a SocketAddress */ |
405 | if (!nbd_process_legacy_socket_options(options, opts, errp)) { | |
406 | goto error; | |
407 | } | |
408 | ||
33897dc7 | 409 | /* Pop the config into our state object. Exit if invalid. */ |
491d6c7c HR |
410 | s->saddr = nbd_config(s, options, errp); |
411 | if (!s->saddr) { | |
75822a12 DB |
412 | goto error; |
413 | } | |
414 | ||
491d6c7c HR |
415 | s->export = g_strdup(qemu_opt_get(opts, "export")); |
416 | ||
03504d05 HR |
417 | s->tlscredsid = g_strdup(qemu_opt_get(opts, "tls-creds")); |
418 | if (s->tlscredsid) { | |
419 | tlscreds = nbd_get_tls_creds(s->tlscredsid, errp); | |
75822a12 DB |
420 | if (!tlscreds) { |
421 | goto error; | |
422 | } | |
423 | ||
491d6c7c | 424 | if (s->saddr->type != SOCKET_ADDRESS_KIND_INET) { |
75822a12 DB |
425 | error_setg(errp, "TLS only supported over IP sockets"); |
426 | goto error; | |
427 | } | |
491d6c7c | 428 | hostname = s->saddr->u.inet.data->host; |
33897dc7 NT |
429 | } |
430 | ||
431 | /* establish TCP connection, return error if it fails | |
432 | * TODO: Configurable retry-until-timeout behaviour. | |
433 | */ | |
491d6c7c | 434 | sioc = nbd_establish_connection(s->saddr, errp); |
064097d9 | 435 | if (!sioc) { |
75822a12 DB |
436 | ret = -ECONNREFUSED; |
437 | goto error; | |
2c7989a9 PB |
438 | } |
439 | ||
2302c1ca | 440 | /* NBD handshake */ |
03504d05 | 441 | ret = nbd_client_init(bs, sioc, s->export, |
75822a12 DB |
442 | tlscreds, hostname, errp); |
443 | error: | |
444 | if (sioc) { | |
445 | object_unref(OBJECT(sioc)); | |
446 | } | |
447 | if (tlscreds) { | |
448 | object_unref(OBJECT(tlscreds)); | |
449 | } | |
03504d05 | 450 | if (ret < 0) { |
491d6c7c | 451 | qapi_free_SocketAddress(s->saddr); |
03504d05 HR |
452 | g_free(s->export); |
453 | g_free(s->tlscredsid); | |
454 | } | |
7ccc44fd | 455 | qemu_opts_del(opts); |
75822a12 | 456 | return ret; |
e183ef75 PB |
457 | } |
458 | ||
1486d04a PB |
459 | static int nbd_co_flush(BlockDriverState *bs) |
460 | { | |
f53a829b | 461 | return nbd_client_co_flush(bs); |
1486d04a PB |
462 | } |
463 | ||
fa21e6fa DL |
464 | static void nbd_refresh_limits(BlockDriverState *bs, Error **errp) |
465 | { | |
b9f7855a | 466 | bs->bl.max_pdiscard = NBD_MAX_BUFFER_SIZE; |
fa778fff | 467 | bs->bl.max_pwrite_zeroes = NBD_MAX_BUFFER_SIZE; |
5def6b80 | 468 | bs->bl.max_transfer = NBD_MAX_BUFFER_SIZE; |
fa21e6fa DL |
469 | } |
470 | ||
75818250 TS |
471 | static void nbd_close(BlockDriverState *bs) |
472 | { | |
03504d05 HR |
473 | BDRVNBDState *s = bs->opaque; |
474 | ||
f53a829b | 475 | nbd_client_close(bs); |
03504d05 | 476 | |
491d6c7c | 477 | qapi_free_SocketAddress(s->saddr); |
03504d05 HR |
478 | g_free(s->export); |
479 | g_free(s->tlscredsid); | |
75818250 TS |
480 | } |
481 | ||
482 | static int64_t nbd_getlength(BlockDriverState *bs) | |
483 | { | |
484 | BDRVNBDState *s = bs->opaque; | |
485 | ||
2302c1ca | 486 | return s->client.size; |
75818250 TS |
487 | } |
488 | ||
69447cd8 SH |
489 | static void nbd_detach_aio_context(BlockDriverState *bs) |
490 | { | |
f53a829b | 491 | nbd_client_detach_aio_context(bs); |
69447cd8 SH |
492 | } |
493 | ||
494 | static void nbd_attach_aio_context(BlockDriverState *bs, | |
495 | AioContext *new_context) | |
496 | { | |
f53a829b | 497 | nbd_client_attach_aio_context(bs, new_context); |
69447cd8 SH |
498 | } |
499 | ||
4cdd01d3 | 500 | static void nbd_refresh_filename(BlockDriverState *bs, QDict *options) |
2019d68b | 501 | { |
03504d05 | 502 | BDRVNBDState *s = bs->opaque; |
2019d68b | 503 | QDict *opts = qdict_new(); |
491d6c7c HR |
504 | QObject *saddr_qdict; |
505 | Visitor *ov; | |
506 | const char *host = NULL, *port = NULL, *path = NULL; | |
507 | ||
508 | if (s->saddr->type == SOCKET_ADDRESS_KIND_INET) { | |
509 | const InetSocketAddress *inet = s->saddr->u.inet.data; | |
510 | if (!inet->has_ipv4 && !inet->has_ipv6 && !inet->has_to) { | |
511 | host = inet->host; | |
512 | port = inet->port; | |
513 | } | |
514 | } else if (s->saddr->type == SOCKET_ADDRESS_KIND_UNIX) { | |
515 | path = s->saddr->u.q_unix.data->path; | |
516 | } | |
2019d68b | 517 | |
fcfcd8ff | 518 | qdict_put(opts, "driver", qstring_from_str("nbd")); |
2019d68b | 519 | |
491d6c7c | 520 | if (path && s->export) { |
2019d68b | 521 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
491d6c7c HR |
522 | "nbd+unix:///%s?socket=%s", s->export, path); |
523 | } else if (path && !s->export) { | |
2019d68b | 524 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
491d6c7c HR |
525 | "nbd+unix://?socket=%s", path); |
526 | } else if (host && s->export) { | |
ec0de768 | 527 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
491d6c7c HR |
528 | "nbd://%s:%s/%s", host, port, s->export); |
529 | } else if (host && !s->export) { | |
ec0de768 | 530 | snprintf(bs->exact_filename, sizeof(bs->exact_filename), |
491d6c7c | 531 | "nbd://%s:%s", host, port); |
ec0de768 HR |
532 | } |
533 | ||
491d6c7c HR |
534 | ov = qobject_output_visitor_new(&saddr_qdict); |
535 | visit_type_SocketAddress(ov, NULL, &s->saddr, &error_abort); | |
536 | visit_complete(ov, &saddr_qdict); | |
a1d4e38a | 537 | visit_free(ov); |
491d6c7c HR |
538 | qdict_put_obj(opts, "server", saddr_qdict); |
539 | ||
03504d05 | 540 | if (s->export) { |
fcfcd8ff | 541 | qdict_put(opts, "export", qstring_from_str(s->export)); |
2019d68b | 542 | } |
03504d05 | 543 | if (s->tlscredsid) { |
fcfcd8ff | 544 | qdict_put(opts, "tls-creds", qstring_from_str(s->tlscredsid)); |
75822a12 | 545 | } |
2019d68b | 546 | |
491d6c7c | 547 | qdict_flatten(opts); |
2019d68b HR |
548 | bs->full_open_options = opts; |
549 | } | |
550 | ||
5efa9d5a | 551 | static BlockDriver bdrv_nbd = { |
69447cd8 SH |
552 | .format_name = "nbd", |
553 | .protocol_name = "nbd", | |
554 | .instance_size = sizeof(BDRVNBDState), | |
555 | .bdrv_parse_filename = nbd_parse_filename, | |
556 | .bdrv_file_open = nbd_open, | |
70c4fb26 EB |
557 | .bdrv_co_preadv = nbd_client_co_preadv, |
558 | .bdrv_co_pwritev = nbd_client_co_pwritev, | |
fa778fff | 559 | .bdrv_co_pwrite_zeroes = nbd_client_co_pwrite_zeroes, |
69447cd8 SH |
560 | .bdrv_close = nbd_close, |
561 | .bdrv_co_flush_to_os = nbd_co_flush, | |
447e57c3 | 562 | .bdrv_co_pdiscard = nbd_client_co_pdiscard, |
fa21e6fa | 563 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
564 | .bdrv_getlength = nbd_getlength, |
565 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
566 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 567 | .bdrv_refresh_filename = nbd_refresh_filename, |
1d7d2a9d PB |
568 | }; |
569 | ||
570 | static BlockDriver bdrv_nbd_tcp = { | |
69447cd8 SH |
571 | .format_name = "nbd", |
572 | .protocol_name = "nbd+tcp", | |
573 | .instance_size = sizeof(BDRVNBDState), | |
574 | .bdrv_parse_filename = nbd_parse_filename, | |
575 | .bdrv_file_open = nbd_open, | |
70c4fb26 EB |
576 | .bdrv_co_preadv = nbd_client_co_preadv, |
577 | .bdrv_co_pwritev = nbd_client_co_pwritev, | |
fa778fff | 578 | .bdrv_co_pwrite_zeroes = nbd_client_co_pwrite_zeroes, |
69447cd8 SH |
579 | .bdrv_close = nbd_close, |
580 | .bdrv_co_flush_to_os = nbd_co_flush, | |
447e57c3 | 581 | .bdrv_co_pdiscard = nbd_client_co_pdiscard, |
fa21e6fa | 582 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
583 | .bdrv_getlength = nbd_getlength, |
584 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
585 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 586 | .bdrv_refresh_filename = nbd_refresh_filename, |
1d7d2a9d PB |
587 | }; |
588 | ||
589 | static BlockDriver bdrv_nbd_unix = { | |
69447cd8 SH |
590 | .format_name = "nbd", |
591 | .protocol_name = "nbd+unix", | |
592 | .instance_size = sizeof(BDRVNBDState), | |
593 | .bdrv_parse_filename = nbd_parse_filename, | |
594 | .bdrv_file_open = nbd_open, | |
70c4fb26 EB |
595 | .bdrv_co_preadv = nbd_client_co_preadv, |
596 | .bdrv_co_pwritev = nbd_client_co_pwritev, | |
fa778fff | 597 | .bdrv_co_pwrite_zeroes = nbd_client_co_pwrite_zeroes, |
69447cd8 SH |
598 | .bdrv_close = nbd_close, |
599 | .bdrv_co_flush_to_os = nbd_co_flush, | |
447e57c3 | 600 | .bdrv_co_pdiscard = nbd_client_co_pdiscard, |
fa21e6fa | 601 | .bdrv_refresh_limits = nbd_refresh_limits, |
69447cd8 SH |
602 | .bdrv_getlength = nbd_getlength, |
603 | .bdrv_detach_aio_context = nbd_detach_aio_context, | |
604 | .bdrv_attach_aio_context = nbd_attach_aio_context, | |
2019d68b | 605 | .bdrv_refresh_filename = nbd_refresh_filename, |
75818250 | 606 | }; |
5efa9d5a AL |
607 | |
608 | static void bdrv_nbd_init(void) | |
609 | { | |
610 | bdrv_register(&bdrv_nbd); | |
1d7d2a9d PB |
611 | bdrv_register(&bdrv_nbd_tcp); |
612 | bdrv_register(&bdrv_nbd_unix); | |
5efa9d5a AL |
613 | } |
614 | ||
615 | block_init(bdrv_nbd_init); |