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Commit | Line | Data |
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5166fe0a LV |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * Copyright (c) 2022 Red Hat, Inc. | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include "qemu/osdep.h" | |
27 | ||
28 | #include "net/net.h" | |
29 | #include "clients.h" | |
30 | #include "monitor/monitor.h" | |
31 | #include "qapi/error.h" | |
32 | #include "qemu/error-report.h" | |
33 | #include "qemu/option.h" | |
34 | #include "qemu/sockets.h" | |
35 | #include "qemu/iov.h" | |
36 | #include "qemu/main-loop.h" | |
37 | #include "qemu/cutils.h" | |
38 | ||
39 | typedef struct NetDgramState { | |
40 | NetClientState nc; | |
41 | int fd; | |
42 | SocketReadState rs; | |
5166fe0a LV |
43 | bool read_poll; /* waiting to receive data? */ |
44 | bool write_poll; /* waiting to transmit data? */ | |
7c1f0c33 LV |
45 | /* contains destination iff connectionless */ |
46 | struct sockaddr *dest_addr; | |
47 | socklen_t dest_len; | |
5166fe0a LV |
48 | } NetDgramState; |
49 | ||
50 | static void net_dgram_send(void *opaque); | |
51 | static void net_dgram_writable(void *opaque); | |
52 | ||
53 | static void net_dgram_update_fd_handler(NetDgramState *s) | |
54 | { | |
55 | qemu_set_fd_handler(s->fd, | |
56 | s->read_poll ? net_dgram_send : NULL, | |
57 | s->write_poll ? net_dgram_writable : NULL, | |
58 | s); | |
59 | } | |
60 | ||
61 | static void net_dgram_read_poll(NetDgramState *s, bool enable) | |
62 | { | |
63 | s->read_poll = enable; | |
64 | net_dgram_update_fd_handler(s); | |
65 | } | |
66 | ||
67 | static void net_dgram_write_poll(NetDgramState *s, bool enable) | |
68 | { | |
69 | s->write_poll = enable; | |
70 | net_dgram_update_fd_handler(s); | |
71 | } | |
72 | ||
73 | static void net_dgram_writable(void *opaque) | |
74 | { | |
75 | NetDgramState *s = opaque; | |
76 | ||
77 | net_dgram_write_poll(s, false); | |
78 | ||
79 | qemu_flush_queued_packets(&s->nc); | |
80 | } | |
81 | ||
82 | static ssize_t net_dgram_receive(NetClientState *nc, | |
83 | const uint8_t *buf, size_t size) | |
84 | { | |
85 | NetDgramState *s = DO_UPCAST(NetDgramState, nc, nc); | |
86 | ssize_t ret; | |
87 | ||
88 | do { | |
7c1f0c33 LV |
89 | if (s->dest_addr) { |
90 | ret = sendto(s->fd, buf, size, 0, s->dest_addr, s->dest_len); | |
5166fe0a LV |
91 | } else { |
92 | ret = send(s->fd, buf, size, 0); | |
93 | } | |
94 | } while (ret == -1 && errno == EINTR); | |
95 | ||
96 | if (ret == -1 && errno == EAGAIN) { | |
97 | net_dgram_write_poll(s, true); | |
98 | return 0; | |
99 | } | |
100 | return ret; | |
101 | } | |
102 | ||
103 | static void net_dgram_send_completed(NetClientState *nc, ssize_t len) | |
104 | { | |
105 | NetDgramState *s = DO_UPCAST(NetDgramState, nc, nc); | |
106 | ||
107 | if (!s->read_poll) { | |
108 | net_dgram_read_poll(s, true); | |
109 | } | |
110 | } | |
111 | ||
112 | static void net_dgram_rs_finalize(SocketReadState *rs) | |
113 | { | |
114 | NetDgramState *s = container_of(rs, NetDgramState, rs); | |
115 | ||
116 | if (qemu_send_packet_async(&s->nc, rs->buf, | |
117 | rs->packet_len, | |
118 | net_dgram_send_completed) == 0) { | |
119 | net_dgram_read_poll(s, false); | |
120 | } | |
121 | } | |
122 | ||
123 | static void net_dgram_send(void *opaque) | |
124 | { | |
125 | NetDgramState *s = opaque; | |
126 | int size; | |
127 | ||
128 | size = recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); | |
129 | if (size < 0) { | |
130 | return; | |
131 | } | |
132 | if (size == 0) { | |
133 | /* end of connection */ | |
134 | net_dgram_read_poll(s, false); | |
135 | net_dgram_write_poll(s, false); | |
136 | return; | |
137 | } | |
138 | if (qemu_send_packet_async(&s->nc, s->rs.buf, size, | |
139 | net_dgram_send_completed) == 0) { | |
140 | net_dgram_read_poll(s, false); | |
141 | } | |
142 | } | |
143 | ||
144 | static int net_dgram_mcast_create(struct sockaddr_in *mcastaddr, | |
145 | struct in_addr *localaddr, | |
146 | Error **errp) | |
147 | { | |
148 | struct ip_mreq imr; | |
149 | int fd; | |
150 | int val, ret; | |
151 | #ifdef __OpenBSD__ | |
152 | unsigned char loop; | |
153 | #else | |
154 | int loop; | |
155 | #endif | |
156 | ||
157 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { | |
158 | error_setg(errp, "specified mcastaddr %s (0x%08x) " | |
159 | "does not contain a multicast address", | |
160 | inet_ntoa(mcastaddr->sin_addr), | |
161 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
162 | return -1; | |
163 | } | |
164 | ||
165 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); | |
166 | if (fd < 0) { | |
167 | error_setg_errno(errp, errno, "can't create datagram socket"); | |
168 | return -1; | |
169 | } | |
170 | ||
171 | /* | |
172 | * Allow multiple sockets to bind the same multicast ip and port by setting | |
173 | * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set | |
174 | * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR | |
175 | * only on posix systems. | |
176 | */ | |
177 | val = 1; | |
178 | ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); | |
179 | if (ret < 0) { | |
180 | error_setg_errno(errp, errno, "can't set socket option SO_REUSEADDR"); | |
181 | goto fail; | |
182 | } | |
183 | ||
184 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
185 | if (ret < 0) { | |
186 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", | |
187 | inet_ntoa(mcastaddr->sin_addr)); | |
188 | goto fail; | |
189 | } | |
190 | ||
191 | /* Add host to multicast group */ | |
192 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
193 | if (localaddr) { | |
194 | imr.imr_interface = *localaddr; | |
195 | } else { | |
196 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
197 | } | |
198 | ||
199 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, | |
200 | &imr, sizeof(struct ip_mreq)); | |
201 | if (ret < 0) { | |
202 | error_setg_errno(errp, errno, | |
203 | "can't add socket to multicast group %s", | |
204 | inet_ntoa(imr.imr_multiaddr)); | |
205 | goto fail; | |
206 | } | |
207 | ||
208 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
209 | loop = 1; | |
210 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, | |
211 | &loop, sizeof(loop)); | |
212 | if (ret < 0) { | |
213 | error_setg_errno(errp, errno, | |
214 | "can't force multicast message to loopback"); | |
215 | goto fail; | |
216 | } | |
217 | ||
218 | /* If a bind address is given, only send packets from that address */ | |
219 | if (localaddr != NULL) { | |
220 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, | |
221 | localaddr, sizeof(*localaddr)); | |
222 | if (ret < 0) { | |
223 | error_setg_errno(errp, errno, | |
224 | "can't set the default network send interface"); | |
225 | goto fail; | |
226 | } | |
227 | } | |
228 | ||
229 | qemu_socket_set_nonblock(fd); | |
230 | return fd; | |
231 | fail: | |
232 | if (fd >= 0) { | |
25657fc6 | 233 | close(fd); |
5166fe0a LV |
234 | } |
235 | return -1; | |
236 | } | |
237 | ||
238 | static void net_dgram_cleanup(NetClientState *nc) | |
239 | { | |
240 | NetDgramState *s = DO_UPCAST(NetDgramState, nc, nc); | |
241 | if (s->fd != -1) { | |
242 | net_dgram_read_poll(s, false); | |
243 | net_dgram_write_poll(s, false); | |
244 | close(s->fd); | |
245 | s->fd = -1; | |
246 | } | |
7c1f0c33 LV |
247 | g_free(s->dest_addr); |
248 | s->dest_addr = NULL; | |
249 | s->dest_len = 0; | |
5166fe0a LV |
250 | } |
251 | ||
252 | static NetClientInfo net_dgram_socket_info = { | |
253 | .type = NET_CLIENT_DRIVER_DGRAM, | |
254 | .size = sizeof(NetDgramState), | |
255 | .receive = net_dgram_receive, | |
256 | .cleanup = net_dgram_cleanup, | |
257 | }; | |
258 | ||
259 | static NetDgramState *net_dgram_fd_init(NetClientState *peer, | |
260 | const char *model, | |
261 | const char *name, | |
8ecc7f40 | 262 | int fd, |
5166fe0a LV |
263 | Error **errp) |
264 | { | |
5166fe0a LV |
265 | NetClientState *nc; |
266 | NetDgramState *s; | |
5166fe0a LV |
267 | |
268 | nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); | |
269 | ||
270 | s = DO_UPCAST(NetDgramState, nc, nc); | |
271 | ||
272 | s->fd = fd; | |
273 | net_socket_rs_init(&s->rs, net_dgram_rs_finalize, false); | |
274 | net_dgram_read_poll(s, true); | |
275 | ||
5166fe0a | 276 | return s; |
5166fe0a LV |
277 | } |
278 | ||
279 | static int net_dgram_mcast_init(NetClientState *peer, | |
280 | const char *model, | |
281 | const char *name, | |
282 | SocketAddress *remote, | |
283 | SocketAddress *local, | |
284 | Error **errp) | |
285 | { | |
286 | NetDgramState *s; | |
287 | int fd, ret; | |
7c1f0c33 | 288 | struct sockaddr_in *saddr; |
5166fe0a LV |
289 | |
290 | if (remote->type != SOCKET_ADDRESS_TYPE_INET) { | |
291 | error_setg(errp, "multicast only support inet type"); | |
292 | return -1; | |
293 | } | |
294 | ||
7c1f0c33 LV |
295 | saddr = g_new(struct sockaddr_in, 1); |
296 | if (convert_host_port(saddr, remote->u.inet.host, remote->u.inet.port, | |
5166fe0a | 297 | errp) < 0) { |
7c1f0c33 | 298 | g_free(saddr); |
5166fe0a LV |
299 | return -1; |
300 | } | |
301 | ||
302 | if (!local) { | |
7c1f0c33 | 303 | fd = net_dgram_mcast_create(saddr, NULL, errp); |
5166fe0a | 304 | if (fd < 0) { |
7c1f0c33 | 305 | g_free(saddr); |
5166fe0a LV |
306 | return -1; |
307 | } | |
308 | } else { | |
309 | switch (local->type) { | |
310 | case SOCKET_ADDRESS_TYPE_INET: { | |
311 | struct in_addr localaddr; | |
312 | ||
313 | if (inet_aton(local->u.inet.host, &localaddr) == 0) { | |
7c1f0c33 | 314 | g_free(saddr); |
5166fe0a LV |
315 | error_setg(errp, "localaddr '%s' is not a valid IPv4 address", |
316 | local->u.inet.host); | |
317 | return -1; | |
318 | } | |
319 | ||
7c1f0c33 | 320 | fd = net_dgram_mcast_create(saddr, &localaddr, errp); |
5166fe0a | 321 | if (fd < 0) { |
7c1f0c33 | 322 | g_free(saddr); |
5166fe0a LV |
323 | return -1; |
324 | } | |
325 | break; | |
326 | } | |
8ecc7f40 LV |
327 | case SOCKET_ADDRESS_TYPE_FD: { |
328 | int newfd; | |
329 | ||
5166fe0a LV |
330 | fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); |
331 | if (fd == -1) { | |
7c1f0c33 | 332 | g_free(saddr); |
5166fe0a LV |
333 | return -1; |
334 | } | |
335 | ret = qemu_socket_try_set_nonblock(fd); | |
336 | if (ret < 0) { | |
7c1f0c33 | 337 | g_free(saddr); |
5166fe0a LV |
338 | error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", |
339 | name, fd); | |
340 | return -1; | |
341 | } | |
8ecc7f40 LV |
342 | |
343 | /* | |
344 | * fd passed: multicast: "learn" dest_addr address from bound | |
345 | * address and save it. Because this may be "shared" socket from a | |
346 | * "master" process, datagrams would be recv() by ONLY ONE process: | |
347 | * we must "clone" this dgram socket --jjo | |
348 | */ | |
349 | ||
350 | saddr = g_new(struct sockaddr_in, 1); | |
351 | ||
352 | if (convert_host_port(saddr, local->u.inet.host, local->u.inet.port, | |
353 | errp) < 0) { | |
354 | g_free(saddr); | |
25657fc6 | 355 | close(fd); |
8ecc7f40 LV |
356 | return -1; |
357 | } | |
358 | ||
359 | /* must be bound */ | |
360 | if (saddr->sin_addr.s_addr == 0) { | |
361 | error_setg(errp, "can't setup multicast destination address"); | |
362 | g_free(saddr); | |
25657fc6 | 363 | close(fd); |
8ecc7f40 LV |
364 | return -1; |
365 | } | |
366 | /* clone dgram socket */ | |
367 | newfd = net_dgram_mcast_create(saddr, NULL, errp); | |
368 | if (newfd < 0) { | |
369 | g_free(saddr); | |
25657fc6 | 370 | close(fd); |
8ecc7f40 LV |
371 | return -1; |
372 | } | |
373 | /* clone newfd to fd, close newfd */ | |
374 | dup2(newfd, fd); | |
375 | close(newfd); | |
5166fe0a | 376 | break; |
8ecc7f40 | 377 | } |
5166fe0a | 378 | default: |
7c1f0c33 | 379 | g_free(saddr); |
5166fe0a LV |
380 | error_setg(errp, "only support inet or fd type for local"); |
381 | return -1; | |
382 | } | |
383 | } | |
384 | ||
8ecc7f40 | 385 | s = net_dgram_fd_init(peer, model, name, fd, errp); |
5166fe0a | 386 | if (!s) { |
7c1f0c33 | 387 | g_free(saddr); |
5166fe0a LV |
388 | return -1; |
389 | } | |
390 | ||
7c1f0c33 LV |
391 | g_assert(s->dest_addr == NULL); |
392 | s->dest_addr = (struct sockaddr *)saddr; | |
393 | s->dest_len = sizeof(*saddr); | |
394 | ||
8ecc7f40 LV |
395 | if (!local) { |
396 | qemu_set_info_str(&s->nc, "mcast=%s:%d", | |
397 | inet_ntoa(saddr->sin_addr), | |
398 | ntohs(saddr->sin_port)); | |
399 | } else { | |
400 | switch (local->type) { | |
401 | case SOCKET_ADDRESS_TYPE_INET: | |
402 | qemu_set_info_str(&s->nc, "mcast=%s:%d", | |
403 | inet_ntoa(saddr->sin_addr), | |
404 | ntohs(saddr->sin_port)); | |
405 | break; | |
406 | case SOCKET_ADDRESS_TYPE_FD: | |
407 | qemu_set_info_str(&s->nc, "fd=%d (cloned mcast=%s:%d)", | |
408 | fd, inet_ntoa(saddr->sin_addr), | |
409 | ntohs(saddr->sin_port)); | |
410 | break; | |
411 | default: | |
412 | g_assert_not_reached(); | |
413 | } | |
414 | } | |
5166fe0a | 415 | |
5166fe0a LV |
416 | return 0; |
417 | ||
418 | } | |
419 | ||
420 | ||
421 | int net_init_dgram(const Netdev *netdev, const char *name, | |
422 | NetClientState *peer, Error **errp) | |
423 | { | |
424 | NetDgramState *s; | |
425 | int fd, ret; | |
5166fe0a | 426 | SocketAddress *remote, *local; |
7c1f0c33 LV |
427 | struct sockaddr *dest_addr; |
428 | struct sockaddr_in laddr_in, raddr_in; | |
784e7a25 | 429 | struct sockaddr_un laddr_un, raddr_un; |
7c1f0c33 | 430 | socklen_t dest_len; |
5166fe0a LV |
431 | |
432 | assert(netdev->type == NET_CLIENT_DRIVER_DGRAM); | |
433 | ||
434 | remote = netdev->u.dgram.remote; | |
435 | local = netdev->u.dgram.local; | |
436 | ||
437 | /* detect multicast address */ | |
438 | if (remote && remote->type == SOCKET_ADDRESS_TYPE_INET) { | |
439 | struct sockaddr_in mcastaddr; | |
440 | ||
441 | if (convert_host_port(&mcastaddr, remote->u.inet.host, | |
442 | remote->u.inet.port, errp) < 0) { | |
443 | return -1; | |
444 | } | |
445 | ||
446 | if (IN_MULTICAST(ntohl(mcastaddr.sin_addr.s_addr))) { | |
447 | return net_dgram_mcast_init(peer, "dram", name, remote, local, | |
448 | errp); | |
449 | } | |
450 | } | |
451 | ||
452 | /* unicast address */ | |
453 | if (!local) { | |
454 | error_setg(errp, "dgram requires local= parameter"); | |
455 | return -1; | |
456 | } | |
457 | ||
458 | if (remote) { | |
459 | if (local->type == SOCKET_ADDRESS_TYPE_FD) { | |
460 | error_setg(errp, "don't set remote with local.fd"); | |
461 | return -1; | |
462 | } | |
463 | if (remote->type != local->type) { | |
464 | error_setg(errp, "remote and local types must be the same"); | |
465 | return -1; | |
466 | } | |
467 | } else { | |
468 | if (local->type != SOCKET_ADDRESS_TYPE_FD) { | |
784e7a25 LV |
469 | error_setg(errp, |
470 | "type=inet or type=unix requires remote parameter"); | |
5166fe0a LV |
471 | return -1; |
472 | } | |
473 | } | |
474 | ||
475 | switch (local->type) { | |
476 | case SOCKET_ADDRESS_TYPE_INET: | |
477 | if (convert_host_port(&laddr_in, local->u.inet.host, local->u.inet.port, | |
478 | errp) < 0) { | |
479 | return -1; | |
480 | } | |
481 | ||
482 | if (convert_host_port(&raddr_in, remote->u.inet.host, | |
483 | remote->u.inet.port, errp) < 0) { | |
484 | return -1; | |
485 | } | |
486 | ||
487 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); | |
488 | if (fd < 0) { | |
489 | error_setg_errno(errp, errno, "can't create datagram socket"); | |
490 | return -1; | |
491 | } | |
492 | ||
493 | ret = socket_set_fast_reuse(fd); | |
494 | if (ret < 0) { | |
495 | error_setg_errno(errp, errno, | |
496 | "can't set socket option SO_REUSEADDR"); | |
25657fc6 | 497 | close(fd); |
5166fe0a LV |
498 | return -1; |
499 | } | |
500 | ret = bind(fd, (struct sockaddr *)&laddr_in, sizeof(laddr_in)); | |
501 | if (ret < 0) { | |
502 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", | |
503 | inet_ntoa(laddr_in.sin_addr)); | |
25657fc6 | 504 | close(fd); |
5166fe0a LV |
505 | return -1; |
506 | } | |
507 | qemu_socket_set_nonblock(fd); | |
7c1f0c33 LV |
508 | |
509 | dest_len = sizeof(raddr_in); | |
510 | dest_addr = g_malloc(dest_len); | |
511 | memcpy(dest_addr, &raddr_in, dest_len); | |
5166fe0a | 512 | break; |
784e7a25 LV |
513 | case SOCKET_ADDRESS_TYPE_UNIX: |
514 | ret = unlink(local->u.q_unix.path); | |
515 | if (ret < 0 && errno != ENOENT) { | |
516 | error_setg_errno(errp, errno, "failed to unlink socket %s", | |
517 | local->u.q_unix.path); | |
518 | return -1; | |
519 | } | |
520 | ||
521 | laddr_un.sun_family = PF_UNIX; | |
522 | ret = snprintf(laddr_un.sun_path, sizeof(laddr_un.sun_path), "%s", | |
523 | local->u.q_unix.path); | |
524 | if (ret < 0 || ret >= sizeof(laddr_un.sun_path)) { | |
525 | error_setg(errp, "UNIX socket path '%s' is too long", | |
526 | local->u.q_unix.path); | |
527 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
528 | sizeof(laddr_un.sun_path)); | |
529 | } | |
530 | ||
531 | raddr_un.sun_family = PF_UNIX; | |
532 | ret = snprintf(raddr_un.sun_path, sizeof(raddr_un.sun_path), "%s", | |
533 | remote->u.q_unix.path); | |
534 | if (ret < 0 || ret >= sizeof(raddr_un.sun_path)) { | |
535 | error_setg(errp, "UNIX socket path '%s' is too long", | |
536 | remote->u.q_unix.path); | |
537 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
538 | sizeof(raddr_un.sun_path)); | |
539 | } | |
540 | ||
541 | fd = qemu_socket(PF_UNIX, SOCK_DGRAM, 0); | |
542 | if (fd < 0) { | |
543 | error_setg_errno(errp, errno, "can't create datagram socket"); | |
544 | return -1; | |
545 | } | |
546 | ||
547 | ret = bind(fd, (struct sockaddr *)&laddr_un, sizeof(laddr_un)); | |
548 | if (ret < 0) { | |
549 | error_setg_errno(errp, errno, "can't bind unix=%s to socket", | |
550 | laddr_un.sun_path); | |
25657fc6 | 551 | close(fd); |
784e7a25 LV |
552 | return -1; |
553 | } | |
554 | qemu_socket_set_nonblock(fd); | |
555 | ||
556 | dest_len = sizeof(raddr_un); | |
557 | dest_addr = g_malloc(dest_len); | |
558 | memcpy(dest_addr, &raddr_un, dest_len); | |
559 | break; | |
5166fe0a LV |
560 | case SOCKET_ADDRESS_TYPE_FD: |
561 | fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); | |
562 | if (fd == -1) { | |
563 | return -1; | |
564 | } | |
565 | ret = qemu_socket_try_set_nonblock(fd); | |
566 | if (ret < 0) { | |
567 | error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", | |
568 | name, fd); | |
569 | return -1; | |
570 | } | |
7c1f0c33 LV |
571 | dest_addr = NULL; |
572 | dest_len = 0; | |
5166fe0a LV |
573 | break; |
574 | default: | |
575 | error_setg(errp, "only support inet or fd type for local"); | |
576 | return -1; | |
577 | } | |
578 | ||
8ecc7f40 | 579 | s = net_dgram_fd_init(peer, "dgram", name, fd, errp); |
5166fe0a LV |
580 | if (!s) { |
581 | return -1; | |
582 | } | |
583 | ||
584 | if (remote) { | |
7c1f0c33 LV |
585 | g_assert(s->dest_addr == NULL); |
586 | s->dest_addr = dest_addr; | |
587 | s->dest_len = dest_len; | |
5166fe0a LV |
588 | } |
589 | ||
590 | switch (local->type) { | |
591 | case SOCKET_ADDRESS_TYPE_INET: | |
592 | qemu_set_info_str(&s->nc, "udp=%s:%d/%s:%d", | |
593 | inet_ntoa(laddr_in.sin_addr), | |
594 | ntohs(laddr_in.sin_port), | |
595 | inet_ntoa(raddr_in.sin_addr), | |
596 | ntohs(raddr_in.sin_port)); | |
597 | break; | |
784e7a25 LV |
598 | case SOCKET_ADDRESS_TYPE_UNIX: |
599 | qemu_set_info_str(&s->nc, "udp=%s:%s", | |
600 | laddr_un.sun_path, raddr_un.sun_path); | |
601 | break; | |
8ecc7f40 LV |
602 | case SOCKET_ADDRESS_TYPE_FD: { |
603 | SocketAddress *sa; | |
604 | SocketAddressType sa_type; | |
605 | ||
606 | sa = socket_local_address(fd, errp); | |
607 | if (sa) { | |
608 | sa_type = sa->type; | |
609 | qapi_free_SocketAddress(sa); | |
610 | ||
611 | qemu_set_info_str(&s->nc, "fd=%d %s", fd, | |
612 | SocketAddressType_str(sa_type)); | |
613 | } else { | |
614 | qemu_set_info_str(&s->nc, "fd=%d", fd); | |
615 | } | |
5166fe0a | 616 | break; |
8ecc7f40 | 617 | } |
5166fe0a LV |
618 | default: |
619 | g_assert_not_reached(); | |
620 | } | |
621 | ||
622 | return 0; | |
623 | } |