xref: /openbmc/qemu/io/channel-socket.c (revision 84a3a53c) 
1 /*
2  * QEMU I/O channels sockets driver
3  *
4  * Copyright (c) 2015 Red Hat, Inc.
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18  *
19  */
20 
21 #include "io/channel-socket.h"
22 #include "io/channel-watch.h"
23 #include "trace.h"
24 
25 #define SOCKET_MAX_FDS 16
26 
27 SocketAddress *
28 qio_channel_socket_get_local_address(QIOChannelSocket *ioc,
29                                      Error **errp)
30 {
31     return socket_sockaddr_to_address(&ioc->localAddr,
32                                       ioc->localAddrLen,
33                                       errp);
34 }
35 
36 SocketAddress *
37 qio_channel_socket_get_remote_address(QIOChannelSocket *ioc,
38                                       Error **errp)
39 {
40     return socket_sockaddr_to_address(&ioc->remoteAddr,
41                                       ioc->remoteAddrLen,
42                                       errp);
43 }
44 
45 QIOChannelSocket *
46 qio_channel_socket_new(void)
47 {
48     QIOChannelSocket *sioc;
49     QIOChannel *ioc;
50 
51     sioc = QIO_CHANNEL_SOCKET(object_new(TYPE_QIO_CHANNEL_SOCKET));
52     sioc->fd = -1;
53 
54     ioc = QIO_CHANNEL(sioc);
55     ioc->features |= (1 << QIO_CHANNEL_FEATURE_SHUTDOWN);
56 
57     trace_qio_channel_socket_new(sioc);
58 
59     return sioc;
60 }
61 
62 
63 static int
64 qio_channel_socket_set_fd(QIOChannelSocket *sioc,
65                           int fd,
66                           Error **errp)
67 {
68     if (sioc->fd != -1) {
69         error_setg(errp, "Socket is already open");
70         return -1;
71     }
72 
73     sioc->fd = fd;
74     sioc->remoteAddrLen = sizeof(sioc->remoteAddr);
75     sioc->localAddrLen = sizeof(sioc->localAddr);
76 
77 
78     if (getpeername(fd, (struct sockaddr *)&sioc->remoteAddr,
79                     &sioc->remoteAddrLen) < 0) {
80         if (socket_error() == ENOTCONN) {
81             memset(&sioc->remoteAddr, 0, sizeof(sioc->remoteAddr));
82             sioc->remoteAddrLen = sizeof(sioc->remoteAddr);
83         } else {
84             error_setg_errno(errp, socket_error(),
85                              "Unable to query remote socket address");
86             goto error;
87         }
88     }
89 
90     if (getsockname(fd, (struct sockaddr *)&sioc->localAddr,
91                     &sioc->localAddrLen) < 0) {
92         error_setg_errno(errp, socket_error(),
93                          "Unable to query local socket address");
94         goto error;
95     }
96 
97 #ifndef WIN32
98     if (sioc->localAddr.ss_family == AF_UNIX) {
99         QIOChannel *ioc = QIO_CHANNEL(sioc);
100         ioc->features |= (1 << QIO_CHANNEL_FEATURE_FD_PASS);
101     }
102 #endif /* WIN32 */
103 
104     return 0;
105 
106  error:
107     sioc->fd = -1; /* Let the caller close FD on failure */
108     return -1;
109 }
110 
111 QIOChannelSocket *
112 qio_channel_socket_new_fd(int fd,
113                           Error **errp)
114 {
115     QIOChannelSocket *ioc;
116 
117     ioc = qio_channel_socket_new();
118     if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) {
119         object_unref(OBJECT(ioc));
120         return NULL;
121     }
122 
123     trace_qio_channel_socket_new_fd(ioc, fd);
124 
125     return ioc;
126 }
127 
128 
129 int qio_channel_socket_connect_sync(QIOChannelSocket *ioc,
130                                     SocketAddress *addr,
131                                     Error **errp)
132 {
133     int fd;
134 
135     trace_qio_channel_socket_connect_sync(ioc, addr);
136     fd = socket_connect(addr, errp, NULL, NULL);
137     if (fd < 0) {
138         trace_qio_channel_socket_connect_fail(ioc);
139         return -1;
140     }
141 
142     trace_qio_channel_socket_connect_complete(ioc, fd);
143     if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) {
144         close(fd);
145         return -1;
146     }
147 
148     return 0;
149 }
150 
151 
152 static int qio_channel_socket_connect_worker(QIOTask *task,
153                                              Error **errp,
154                                              gpointer opaque)
155 {
156     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
157     SocketAddress *addr = opaque;
158     int ret;
159 
160     ret = qio_channel_socket_connect_sync(ioc,
161                                           addr,
162                                           errp);
163 
164     object_unref(OBJECT(ioc));
165     return ret;
166 }
167 
168 
169 void qio_channel_socket_connect_async(QIOChannelSocket *ioc,
170                                       SocketAddress *addr,
171                                       QIOTaskFunc callback,
172                                       gpointer opaque,
173                                       GDestroyNotify destroy)
174 {
175     QIOTask *task = qio_task_new(
176         OBJECT(ioc), callback, opaque, destroy);
177     SocketAddress *addrCopy;
178 
179     qapi_copy_SocketAddress(&addrCopy, addr);
180 
181     /* socket_connect() does a non-blocking connect(), but it
182      * still blocks in DNS lookups, so we must use a thread */
183     trace_qio_channel_socket_connect_async(ioc, addr);
184     qio_task_run_in_thread(task,
185                            qio_channel_socket_connect_worker,
186                            addrCopy,
187                            (GDestroyNotify)qapi_free_SocketAddress);
188 }
189 
190 
191 int qio_channel_socket_listen_sync(QIOChannelSocket *ioc,
192                                    SocketAddress *addr,
193                                    Error **errp)
194 {
195     int fd;
196 
197     trace_qio_channel_socket_listen_sync(ioc, addr);
198     fd = socket_listen(addr, errp);
199     if (fd < 0) {
200         trace_qio_channel_socket_listen_fail(ioc);
201         return -1;
202     }
203 
204     trace_qio_channel_socket_listen_complete(ioc, fd);
205     if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) {
206         close(fd);
207         return -1;
208     }
209 
210     return 0;
211 }
212 
213 
214 static int qio_channel_socket_listen_worker(QIOTask *task,
215                                             Error **errp,
216                                             gpointer opaque)
217 {
218     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
219     SocketAddress *addr = opaque;
220     int ret;
221 
222     ret = qio_channel_socket_listen_sync(ioc,
223                                          addr,
224                                          errp);
225 
226     object_unref(OBJECT(ioc));
227     return ret;
228 }
229 
230 
231 void qio_channel_socket_listen_async(QIOChannelSocket *ioc,
232                                      SocketAddress *addr,
233                                      QIOTaskFunc callback,
234                                      gpointer opaque,
235                                      GDestroyNotify destroy)
236 {
237     QIOTask *task = qio_task_new(
238         OBJECT(ioc), callback, opaque, destroy);
239     SocketAddress *addrCopy;
240 
241     qapi_copy_SocketAddress(&addrCopy, addr);
242 
243     /* socket_listen() blocks in DNS lookups, so we must use a thread */
244     trace_qio_channel_socket_listen_async(ioc, addr);
245     qio_task_run_in_thread(task,
246                            qio_channel_socket_listen_worker,
247                            addrCopy,
248                            (GDestroyNotify)qapi_free_SocketAddress);
249 }
250 
251 
252 int qio_channel_socket_dgram_sync(QIOChannelSocket *ioc,
253                                   SocketAddress *localAddr,
254                                   SocketAddress *remoteAddr,
255                                   Error **errp)
256 {
257     int fd;
258 
259     trace_qio_channel_socket_dgram_sync(ioc, localAddr, remoteAddr);
260     fd = socket_dgram(localAddr, remoteAddr, errp);
261     if (fd < 0) {
262         trace_qio_channel_socket_dgram_fail(ioc);
263         return -1;
264     }
265 
266     trace_qio_channel_socket_dgram_complete(ioc, fd);
267     if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) {
268         close(fd);
269         return -1;
270     }
271 
272     return 0;
273 }
274 
275 
276 struct QIOChannelSocketDGramWorkerData {
277     SocketAddress *localAddr;
278     SocketAddress *remoteAddr;
279 };
280 
281 
282 static void qio_channel_socket_dgram_worker_free(gpointer opaque)
283 {
284     struct QIOChannelSocketDGramWorkerData *data = opaque;
285     qapi_free_SocketAddress(data->localAddr);
286     qapi_free_SocketAddress(data->remoteAddr);
287     g_free(data);
288 }
289 
290 static int qio_channel_socket_dgram_worker(QIOTask *task,
291                                            Error **errp,
292                                            gpointer opaque)
293 {
294     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
295     struct QIOChannelSocketDGramWorkerData *data = opaque;
296     int ret;
297 
298     /* socket_dgram() blocks in DNS lookups, so we must use a thread */
299     ret = qio_channel_socket_dgram_sync(ioc,
300                                         data->localAddr,
301                                         data->remoteAddr,
302                                         errp);
303 
304     object_unref(OBJECT(ioc));
305     return ret;
306 }
307 
308 
309 void qio_channel_socket_dgram_async(QIOChannelSocket *ioc,
310                                     SocketAddress *localAddr,
311                                     SocketAddress *remoteAddr,
312                                     QIOTaskFunc callback,
313                                     gpointer opaque,
314                                     GDestroyNotify destroy)
315 {
316     QIOTask *task = qio_task_new(
317         OBJECT(ioc), callback, opaque, destroy);
318     struct QIOChannelSocketDGramWorkerData *data = g_new0(
319         struct QIOChannelSocketDGramWorkerData, 1);
320 
321     qapi_copy_SocketAddress(&data->localAddr, localAddr);
322     qapi_copy_SocketAddress(&data->remoteAddr, remoteAddr);
323 
324     trace_qio_channel_socket_dgram_async(ioc, localAddr, remoteAddr);
325     qio_task_run_in_thread(task,
326                            qio_channel_socket_dgram_worker,
327                            data,
328                            qio_channel_socket_dgram_worker_free);
329 }
330 
331 
332 QIOChannelSocket *
333 qio_channel_socket_accept(QIOChannelSocket *ioc,
334                           Error **errp)
335 {
336     QIOChannelSocket *cioc;
337 
338     cioc = QIO_CHANNEL_SOCKET(object_new(TYPE_QIO_CHANNEL_SOCKET));
339     cioc->fd = -1;
340     cioc->remoteAddrLen = sizeof(ioc->remoteAddr);
341     cioc->localAddrLen = sizeof(ioc->localAddr);
342 
343  retry:
344     trace_qio_channel_socket_accept(ioc);
345     cioc->fd = accept(ioc->fd, (struct sockaddr *)&cioc->remoteAddr,
346                       &cioc->remoteAddrLen);
347     if (cioc->fd < 0) {
348         trace_qio_channel_socket_accept_fail(ioc);
349         if (socket_error() == EINTR) {
350             goto retry;
351         }
352         goto error;
353     }
354 
355     if (getsockname(cioc->fd, (struct sockaddr *)&cioc->localAddr,
356                     &cioc->localAddrLen) < 0) {
357         error_setg_errno(errp, socket_error(),
358                          "Unable to query local socket address");
359         goto error;
360     }
361 
362 #ifndef WIN32
363     if (cioc->localAddr.ss_family == AF_UNIX) {
364         QIO_CHANNEL(cioc)->features |= (1 << QIO_CHANNEL_FEATURE_FD_PASS);
365     }
366 #endif /* WIN32 */
367 
368     trace_qio_channel_socket_accept_complete(ioc, cioc, cioc->fd);
369     return cioc;
370 
371  error:
372     object_unref(OBJECT(cioc));
373     return NULL;
374 }
375 
376 static void qio_channel_socket_init(Object *obj)
377 {
378     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj);
379     ioc->fd = -1;
380 }
381 
382 static void qio_channel_socket_finalize(Object *obj)
383 {
384     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj);
385     if (ioc->fd != -1) {
386         close(ioc->fd);
387         ioc->fd = -1;
388     }
389 }
390 
391 
392 #ifndef WIN32
393 static void qio_channel_socket_copy_fds(struct msghdr *msg,
394                                         int **fds, size_t *nfds)
395 {
396     struct cmsghdr *cmsg;
397 
398     *nfds = 0;
399     *fds = NULL;
400 
401     for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
402         int fd_size, i;
403         int gotfds;
404 
405         if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
406             cmsg->cmsg_level != SOL_SOCKET ||
407             cmsg->cmsg_type != SCM_RIGHTS) {
408             continue;
409         }
410 
411         fd_size = cmsg->cmsg_len - CMSG_LEN(0);
412 
413         if (!fd_size) {
414             continue;
415         }
416 
417         gotfds = fd_size / sizeof(int);
418         *fds = g_renew(int, *fds, *nfds + gotfds);
419         memcpy(*fds + *nfds, CMSG_DATA(cmsg), fd_size);
420 
421         for (i = 0; i < gotfds; i++) {
422             int fd = (*fds)[*nfds + i];
423             if (fd < 0) {
424                 continue;
425             }
426 
427             /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
428             qemu_set_block(fd);
429 
430 #ifndef MSG_CMSG_CLOEXEC
431             qemu_set_cloexec(fd);
432 #endif
433         }
434         *nfds += gotfds;
435     }
436 }
437 
438 
439 static ssize_t qio_channel_socket_readv(QIOChannel *ioc,
440                                         const struct iovec *iov,
441                                         size_t niov,
442                                         int **fds,
443                                         size_t *nfds,
444                                         Error **errp)
445 {
446     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
447     ssize_t ret;
448     struct msghdr msg = { NULL, };
449     char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)];
450     int sflags = 0;
451 
452 #ifdef MSG_CMSG_CLOEXEC
453     sflags |= MSG_CMSG_CLOEXEC;
454 #endif
455 
456     msg.msg_iov = (struct iovec *)iov;
457     msg.msg_iovlen = niov;
458     if (fds && nfds) {
459         msg.msg_control = control;
460         msg.msg_controllen = sizeof(control);
461     }
462 
463  retry:
464     ret = recvmsg(sioc->fd, &msg, sflags);
465     if (ret < 0) {
466         if (socket_error() == EAGAIN ||
467             socket_error() == EWOULDBLOCK) {
468             return QIO_CHANNEL_ERR_BLOCK;
469         }
470         if (socket_error() == EINTR) {
471             goto retry;
472         }
473 
474         error_setg_errno(errp, socket_error(),
475                          "Unable to read from socket");
476         return -1;
477     }
478 
479     if (fds && nfds) {
480         qio_channel_socket_copy_fds(&msg, fds, nfds);
481     }
482 
483     return ret;
484 }
485 
486 static ssize_t qio_channel_socket_writev(QIOChannel *ioc,
487                                          const struct iovec *iov,
488                                          size_t niov,
489                                          int *fds,
490                                          size_t nfds,
491                                          Error **errp)
492 {
493     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
494     ssize_t ret;
495     struct msghdr msg = { NULL, };
496     char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)] = { 0 };
497     size_t fdsize = sizeof(int) * nfds;
498     struct cmsghdr *cmsg;
499 
500     msg.msg_iov = (struct iovec *)iov;
501     msg.msg_iovlen = niov;
502 
503     if (nfds) {
504         if (nfds > SOCKET_MAX_FDS) {
505             error_setg_errno(errp, -EINVAL,
506                              "Only %d FDs can be sent, got %zu",
507                              SOCKET_MAX_FDS, nfds);
508             return -1;
509         }
510 
511         msg.msg_control = control;
512         msg.msg_controllen = CMSG_SPACE(sizeof(int) * nfds);
513 
514         cmsg = CMSG_FIRSTHDR(&msg);
515         cmsg->cmsg_len = CMSG_LEN(fdsize);
516         cmsg->cmsg_level = SOL_SOCKET;
517         cmsg->cmsg_type = SCM_RIGHTS;
518         memcpy(CMSG_DATA(cmsg), fds, fdsize);
519     }
520 
521  retry:
522     ret = sendmsg(sioc->fd, &msg, 0);
523     if (ret <= 0) {
524         if (socket_error() == EAGAIN ||
525             socket_error() == EWOULDBLOCK) {
526             return QIO_CHANNEL_ERR_BLOCK;
527         }
528         if (socket_error() == EINTR) {
529             goto retry;
530         }
531         error_setg_errno(errp, socket_error(),
532                          "Unable to write to socket");
533         return -1;
534     }
535     return ret;
536 }
537 #else /* WIN32 */
538 static ssize_t qio_channel_socket_readv(QIOChannel *ioc,
539                                         const struct iovec *iov,
540                                         size_t niov,
541                                         int **fds,
542                                         size_t *nfds,
543                                         Error **errp)
544 {
545     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
546     ssize_t done = 0;
547     ssize_t i;
548 
549     for (i = 0; i < niov; i++) {
550         ssize_t ret;
551     retry:
552         ret = recv(sioc->fd,
553                    iov[i].iov_base,
554                    iov[i].iov_len,
555                    0);
556         if (ret < 0) {
557             if (socket_error() == EAGAIN) {
558                 if (done) {
559                     return done;
560                 } else {
561                     return QIO_CHANNEL_ERR_BLOCK;
562                 }
563             } else if (socket_error() == EINTR) {
564                 goto retry;
565             } else {
566                 error_setg_errno(errp, socket_error(),
567                                  "Unable to write to socket");
568                 return -1;
569             }
570         }
571         done += ret;
572         if (ret < iov[i].iov_len) {
573             return done;
574         }
575     }
576 
577     return done;
578 }
579 
580 static ssize_t qio_channel_socket_writev(QIOChannel *ioc,
581                                          const struct iovec *iov,
582                                          size_t niov,
583                                          int *fds,
584                                          size_t nfds,
585                                          Error **errp)
586 {
587     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
588     ssize_t done = 0;
589     ssize_t i;
590 
591     for (i = 0; i < niov; i++) {
592         ssize_t ret;
593     retry:
594         ret = send(sioc->fd,
595                    iov[i].iov_base,
596                    iov[i].iov_len,
597                    0);
598         if (ret < 0) {
599             if (socket_error() == EAGAIN) {
600                 if (done) {
601                     return done;
602                 } else {
603                     return QIO_CHANNEL_ERR_BLOCK;
604                 }
605             } else if (socket_error() == EINTR) {
606                 goto retry;
607             } else {
608                 error_setg_errno(errp, socket_error(),
609                                  "Unable to write to socket");
610                 return -1;
611             }
612         }
613         done += ret;
614         if (ret < iov[i].iov_len) {
615             return done;
616         }
617     }
618 
619     return done;
620 }
621 #endif /* WIN32 */
622 
623 static int
624 qio_channel_socket_set_blocking(QIOChannel *ioc,
625                                 bool enabled,
626                                 Error **errp)
627 {
628     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
629 
630     if (enabled) {
631         qemu_set_block(sioc->fd);
632     } else {
633         qemu_set_nonblock(sioc->fd);
634     }
635     return 0;
636 }
637 
638 
639 static void
640 qio_channel_socket_set_delay(QIOChannel *ioc,
641                              bool enabled)
642 {
643     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
644     int v = enabled ? 0 : 1;
645 
646     qemu_setsockopt(sioc->fd,
647                     IPPROTO_TCP, TCP_NODELAY,
648                     &v, sizeof(v));
649 }
650 
651 
652 static void
653 qio_channel_socket_set_cork(QIOChannel *ioc,
654                             bool enabled)
655 {
656     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
657     int v = enabled ? 1 : 0;
658 
659     socket_set_cork(sioc->fd, v);
660 }
661 
662 
663 static int
664 qio_channel_socket_close(QIOChannel *ioc,
665                          Error **errp)
666 {
667     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
668 
669     if (closesocket(sioc->fd) < 0) {
670         sioc->fd = -1;
671         error_setg_errno(errp, socket_error(),
672                          "Unable to close socket");
673         return -1;
674     }
675     sioc->fd = -1;
676     return 0;
677 }
678 
679 static int
680 qio_channel_socket_shutdown(QIOChannel *ioc,
681                             QIOChannelShutdown how,
682                             Error **errp)
683 {
684     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
685     int sockhow;
686 
687     switch (how) {
688     case QIO_CHANNEL_SHUTDOWN_READ:
689         sockhow = SHUT_RD;
690         break;
691     case QIO_CHANNEL_SHUTDOWN_WRITE:
692         sockhow = SHUT_WR;
693         break;
694     case QIO_CHANNEL_SHUTDOWN_BOTH:
695     default:
696         sockhow = SHUT_RDWR;
697         break;
698     }
699 
700     if (shutdown(sioc->fd, sockhow) < 0) {
701         error_setg_errno(errp, socket_error(),
702                          "Unable to shutdown socket");
703         return -1;
704     }
705     return 0;
706 }
707 
708 static GSource *qio_channel_socket_create_watch(QIOChannel *ioc,
709                                                 GIOCondition condition)
710 {
711     QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
712     return qio_channel_create_fd_watch(ioc,
713                                        sioc->fd,
714                                        condition);
715 }
716 
717 static void qio_channel_socket_class_init(ObjectClass *klass,
718                                           void *class_data G_GNUC_UNUSED)
719 {
720     QIOChannelClass *ioc_klass = QIO_CHANNEL_CLASS(klass);
721 
722     ioc_klass->io_writev = qio_channel_socket_writev;
723     ioc_klass->io_readv = qio_channel_socket_readv;
724     ioc_klass->io_set_blocking = qio_channel_socket_set_blocking;
725     ioc_klass->io_close = qio_channel_socket_close;
726     ioc_klass->io_shutdown = qio_channel_socket_shutdown;
727     ioc_klass->io_set_cork = qio_channel_socket_set_cork;
728     ioc_klass->io_set_delay = qio_channel_socket_set_delay;
729     ioc_klass->io_create_watch = qio_channel_socket_create_watch;
730 }
731 
732 static const TypeInfo qio_channel_socket_info = {
733     .parent = TYPE_QIO_CHANNEL,
734     .name = TYPE_QIO_CHANNEL_SOCKET,
735     .instance_size = sizeof(QIOChannelSocket),
736     .instance_init = qio_channel_socket_init,
737     .instance_finalize = qio_channel_socket_finalize,
738     .class_init = qio_channel_socket_class_init,
739 };
740 
741 static void qio_channel_socket_register_types(void)
742 {
743     type_register_static(&qio_channel_socket_info);
744 }
745 
746 type_init(qio_channel_socket_register_types);
747