io/channel-socket.c

   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);