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 "qemu/osdep.h" 22 #include "qapi/error.h" 23 #include "qapi/qapi-visit-sockets.h" 24 #include "io/channel-socket.h" 25 #include "io/channel-watch.h" 26 #include "trace.h" 27 #include "qapi/clone-visitor.h" 28 29 #define SOCKET_MAX_FDS 16 30 31 SocketAddress * 32 qio_channel_socket_get_local_address(QIOChannelSocket *ioc, 33 Error **errp) 34 { 35 return socket_sockaddr_to_address(&ioc->localAddr, 36 ioc->localAddrLen, 37 errp); 38 } 39 40 SocketAddress * 41 qio_channel_socket_get_remote_address(QIOChannelSocket *ioc, 42 Error **errp) 43 { 44 return socket_sockaddr_to_address(&ioc->remoteAddr, 45 ioc->remoteAddrLen, 46 errp); 47 } 48 49 QIOChannelSocket * 50 qio_channel_socket_new(void) 51 { 52 QIOChannelSocket *sioc; 53 QIOChannel *ioc; 54 55 sioc = QIO_CHANNEL_SOCKET(object_new(TYPE_QIO_CHANNEL_SOCKET)); 56 sioc->fd = -1; 57 58 ioc = QIO_CHANNEL(sioc); 59 qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_SHUTDOWN); 60 61 #ifdef WIN32 62 ioc->event = CreateEvent(NULL, FALSE, FALSE, NULL); 63 #endif 64 65 trace_qio_channel_socket_new(sioc); 66 67 return sioc; 68 } 69 70 71 static int 72 qio_channel_socket_set_fd(QIOChannelSocket *sioc, 73 int fd, 74 Error **errp) 75 { 76 if (sioc->fd != -1) { 77 error_setg(errp, "Socket is already open"); 78 return -1; 79 } 80 81 sioc->fd = fd; 82 sioc->remoteAddrLen = sizeof(sioc->remoteAddr); 83 sioc->localAddrLen = sizeof(sioc->localAddr); 84 85 86 if (getpeername(fd, (struct sockaddr *)&sioc->remoteAddr, 87 &sioc->remoteAddrLen) < 0) { 88 if (errno == ENOTCONN) { 89 memset(&sioc->remoteAddr, 0, sizeof(sioc->remoteAddr)); 90 sioc->remoteAddrLen = sizeof(sioc->remoteAddr); 91 } else { 92 error_setg_errno(errp, errno, 93 "Unable to query remote socket address"); 94 goto error; 95 } 96 } 97 98 if (getsockname(fd, (struct sockaddr *)&sioc->localAddr, 99 &sioc->localAddrLen) < 0) { 100 error_setg_errno(errp, errno, 101 "Unable to query local socket address"); 102 goto error; 103 } 104 105 #ifndef WIN32 106 if (sioc->localAddr.ss_family == AF_UNIX) { 107 QIOChannel *ioc = QIO_CHANNEL(sioc); 108 qio_channel_set_feature(ioc, QIO_CHANNEL_FEATURE_FD_PASS); 109 } 110 #endif /* WIN32 */ 111 112 return 0; 113 114 error: 115 sioc->fd = -1; /* Let the caller close FD on failure */ 116 return -1; 117 } 118 119 QIOChannelSocket * 120 qio_channel_socket_new_fd(int fd, 121 Error **errp) 122 { 123 QIOChannelSocket *ioc; 124 125 ioc = qio_channel_socket_new(); 126 if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) { 127 object_unref(OBJECT(ioc)); 128 return NULL; 129 } 130 131 trace_qio_channel_socket_new_fd(ioc, fd); 132 133 return ioc; 134 } 135 136 137 int qio_channel_socket_connect_sync(QIOChannelSocket *ioc, 138 SocketAddress *addr, 139 Error **errp) 140 { 141 int fd; 142 143 trace_qio_channel_socket_connect_sync(ioc, addr); 144 fd = socket_connect(addr, errp); 145 if (fd < 0) { 146 trace_qio_channel_socket_connect_fail(ioc); 147 return -1; 148 } 149 150 trace_qio_channel_socket_connect_complete(ioc, fd); 151 if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) { 152 close(fd); 153 return -1; 154 } 155 156 return 0; 157 } 158 159 160 static void qio_channel_socket_connect_worker(QIOTask *task, 161 gpointer opaque) 162 { 163 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 164 SocketAddress *addr = opaque; 165 Error *err = NULL; 166 167 qio_channel_socket_connect_sync(ioc, addr, &err); 168 169 qio_task_set_error(task, err); 170 } 171 172 173 void qio_channel_socket_connect_async(QIOChannelSocket *ioc, 174 SocketAddress *addr, 175 QIOTaskFunc callback, 176 gpointer opaque, 177 GDestroyNotify destroy, 178 GMainContext *context) 179 { 180 QIOTask *task = qio_task_new( 181 OBJECT(ioc), callback, opaque, destroy); 182 SocketAddress *addrCopy; 183 184 addrCopy = QAPI_CLONE(SocketAddress, addr); 185 186 /* socket_connect() does a non-blocking connect(), but it 187 * still blocks in DNS lookups, so we must use a thread */ 188 trace_qio_channel_socket_connect_async(ioc, addr); 189 qio_task_run_in_thread(task, 190 qio_channel_socket_connect_worker, 191 addrCopy, 192 (GDestroyNotify)qapi_free_SocketAddress, 193 context); 194 } 195 196 197 int qio_channel_socket_listen_sync(QIOChannelSocket *ioc, 198 SocketAddress *addr, 199 Error **errp) 200 { 201 int fd; 202 203 trace_qio_channel_socket_listen_sync(ioc, addr); 204 fd = socket_listen(addr, errp); 205 if (fd < 0) { 206 trace_qio_channel_socket_listen_fail(ioc); 207 return -1; 208 } 209 210 trace_qio_channel_socket_listen_complete(ioc, fd); 211 if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) { 212 close(fd); 213 return -1; 214 } 215 qio_channel_set_feature(QIO_CHANNEL(ioc), QIO_CHANNEL_FEATURE_LISTEN); 216 217 return 0; 218 } 219 220 221 static void qio_channel_socket_listen_worker(QIOTask *task, 222 gpointer opaque) 223 { 224 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 225 SocketAddress *addr = opaque; 226 Error *err = NULL; 227 228 qio_channel_socket_listen_sync(ioc, addr, &err); 229 230 qio_task_set_error(task, err); 231 } 232 233 234 void qio_channel_socket_listen_async(QIOChannelSocket *ioc, 235 SocketAddress *addr, 236 QIOTaskFunc callback, 237 gpointer opaque, 238 GDestroyNotify destroy, 239 GMainContext *context) 240 { 241 QIOTask *task = qio_task_new( 242 OBJECT(ioc), callback, opaque, destroy); 243 SocketAddress *addrCopy; 244 245 addrCopy = QAPI_CLONE(SocketAddress, addr); 246 247 /* socket_listen() blocks in DNS lookups, so we must use a thread */ 248 trace_qio_channel_socket_listen_async(ioc, addr); 249 qio_task_run_in_thread(task, 250 qio_channel_socket_listen_worker, 251 addrCopy, 252 (GDestroyNotify)qapi_free_SocketAddress, 253 context); 254 } 255 256 257 int qio_channel_socket_dgram_sync(QIOChannelSocket *ioc, 258 SocketAddress *localAddr, 259 SocketAddress *remoteAddr, 260 Error **errp) 261 { 262 int fd; 263 264 trace_qio_channel_socket_dgram_sync(ioc, localAddr, remoteAddr); 265 fd = socket_dgram(remoteAddr, localAddr, errp); 266 if (fd < 0) { 267 trace_qio_channel_socket_dgram_fail(ioc); 268 return -1; 269 } 270 271 trace_qio_channel_socket_dgram_complete(ioc, fd); 272 if (qio_channel_socket_set_fd(ioc, fd, errp) < 0) { 273 close(fd); 274 return -1; 275 } 276 277 return 0; 278 } 279 280 281 struct QIOChannelSocketDGramWorkerData { 282 SocketAddress *localAddr; 283 SocketAddress *remoteAddr; 284 }; 285 286 287 static void qio_channel_socket_dgram_worker_free(gpointer opaque) 288 { 289 struct QIOChannelSocketDGramWorkerData *data = opaque; 290 qapi_free_SocketAddress(data->localAddr); 291 qapi_free_SocketAddress(data->remoteAddr); 292 g_free(data); 293 } 294 295 static void qio_channel_socket_dgram_worker(QIOTask *task, 296 gpointer opaque) 297 { 298 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 299 struct QIOChannelSocketDGramWorkerData *data = opaque; 300 Error *err = NULL; 301 302 /* socket_dgram() blocks in DNS lookups, so we must use a thread */ 303 qio_channel_socket_dgram_sync(ioc, data->localAddr, 304 data->remoteAddr, &err); 305 306 qio_task_set_error(task, err); 307 } 308 309 310 void qio_channel_socket_dgram_async(QIOChannelSocket *ioc, 311 SocketAddress *localAddr, 312 SocketAddress *remoteAddr, 313 QIOTaskFunc callback, 314 gpointer opaque, 315 GDestroyNotify destroy, 316 GMainContext *context) 317 { 318 QIOTask *task = qio_task_new( 319 OBJECT(ioc), callback, opaque, destroy); 320 struct QIOChannelSocketDGramWorkerData *data = g_new0( 321 struct QIOChannelSocketDGramWorkerData, 1); 322 323 data->localAddr = QAPI_CLONE(SocketAddress, localAddr); 324 data->remoteAddr = QAPI_CLONE(SocketAddress, remoteAddr); 325 326 trace_qio_channel_socket_dgram_async(ioc, localAddr, remoteAddr); 327 qio_task_run_in_thread(task, 328 qio_channel_socket_dgram_worker, 329 data, 330 qio_channel_socket_dgram_worker_free, 331 context); 332 } 333 334 335 QIOChannelSocket * 336 qio_channel_socket_accept(QIOChannelSocket *ioc, 337 Error **errp) 338 { 339 QIOChannelSocket *cioc; 340 341 cioc = qio_channel_socket_new(); 342 cioc->remoteAddrLen = sizeof(ioc->remoteAddr); 343 cioc->localAddrLen = sizeof(ioc->localAddr); 344 345 retry: 346 trace_qio_channel_socket_accept(ioc); 347 cioc->fd = qemu_accept(ioc->fd, (struct sockaddr *)&cioc->remoteAddr, 348 &cioc->remoteAddrLen); 349 if (cioc->fd < 0) { 350 if (errno == EINTR) { 351 goto retry; 352 } 353 error_setg_errno(errp, errno, "Unable to accept connection"); 354 trace_qio_channel_socket_accept_fail(ioc); 355 goto error; 356 } 357 358 if (getsockname(cioc->fd, (struct sockaddr *)&cioc->localAddr, 359 &cioc->localAddrLen) < 0) { 360 error_setg_errno(errp, errno, 361 "Unable to query local socket address"); 362 goto error; 363 } 364 365 #ifndef WIN32 366 if (cioc->localAddr.ss_family == AF_UNIX) { 367 QIOChannel *ioc_local = QIO_CHANNEL(cioc); 368 qio_channel_set_feature(ioc_local, QIO_CHANNEL_FEATURE_FD_PASS); 369 } 370 #endif /* WIN32 */ 371 372 trace_qio_channel_socket_accept_complete(ioc, cioc, cioc->fd); 373 return cioc; 374 375 error: 376 object_unref(OBJECT(cioc)); 377 return NULL; 378 } 379 380 static void qio_channel_socket_init(Object *obj) 381 { 382 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); 383 ioc->fd = -1; 384 } 385 386 static void qio_channel_socket_finalize(Object *obj) 387 { 388 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(obj); 389 390 if (ioc->fd != -1) { 391 QIOChannel *ioc_local = QIO_CHANNEL(ioc); 392 if (qio_channel_has_feature(ioc_local, QIO_CHANNEL_FEATURE_LISTEN)) { 393 Error *err = NULL; 394 395 socket_listen_cleanup(ioc->fd, &err); 396 if (err) { 397 error_report_err(err); 398 err = NULL; 399 } 400 } 401 #ifdef WIN32 402 WSAEventSelect(ioc->fd, NULL, 0); 403 #endif 404 closesocket(ioc->fd); 405 ioc->fd = -1; 406 } 407 } 408 409 410 #ifndef WIN32 411 static void qio_channel_socket_copy_fds(struct msghdr *msg, 412 int **fds, size_t *nfds) 413 { 414 struct cmsghdr *cmsg; 415 416 *nfds = 0; 417 *fds = NULL; 418 419 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { 420 int fd_size, i; 421 int gotfds; 422 423 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) || 424 cmsg->cmsg_level != SOL_SOCKET || 425 cmsg->cmsg_type != SCM_RIGHTS) { 426 continue; 427 } 428 429 fd_size = cmsg->cmsg_len - CMSG_LEN(0); 430 431 if (!fd_size) { 432 continue; 433 } 434 435 gotfds = fd_size / sizeof(int); 436 *fds = g_renew(int, *fds, *nfds + gotfds); 437 memcpy(*fds + *nfds, CMSG_DATA(cmsg), fd_size); 438 439 for (i = 0; i < gotfds; i++) { 440 int fd = (*fds)[*nfds + i]; 441 if (fd < 0) { 442 continue; 443 } 444 445 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ 446 qemu_set_block(fd); 447 448 #ifndef MSG_CMSG_CLOEXEC 449 qemu_set_cloexec(fd); 450 #endif 451 } 452 *nfds += gotfds; 453 } 454 } 455 456 457 static ssize_t qio_channel_socket_readv(QIOChannel *ioc, 458 const struct iovec *iov, 459 size_t niov, 460 int **fds, 461 size_t *nfds, 462 Error **errp) 463 { 464 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 465 ssize_t ret; 466 struct msghdr msg = { NULL, }; 467 char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)]; 468 int sflags = 0; 469 470 memset(control, 0, CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)); 471 472 #ifdef MSG_CMSG_CLOEXEC 473 sflags |= MSG_CMSG_CLOEXEC; 474 #endif 475 476 msg.msg_iov = (struct iovec *)iov; 477 msg.msg_iovlen = niov; 478 if (fds && nfds) { 479 msg.msg_control = control; 480 msg.msg_controllen = sizeof(control); 481 } 482 483 retry: 484 ret = recvmsg(sioc->fd, &msg, sflags); 485 if (ret < 0) { 486 if (errno == EAGAIN) { 487 return QIO_CHANNEL_ERR_BLOCK; 488 } 489 if (errno == EINTR) { 490 goto retry; 491 } 492 493 error_setg_errno(errp, errno, 494 "Unable to read from socket"); 495 return -1; 496 } 497 498 if (fds && nfds) { 499 qio_channel_socket_copy_fds(&msg, fds, nfds); 500 } 501 502 return ret; 503 } 504 505 static ssize_t qio_channel_socket_writev(QIOChannel *ioc, 506 const struct iovec *iov, 507 size_t niov, 508 int *fds, 509 size_t nfds, 510 Error **errp) 511 { 512 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 513 ssize_t ret; 514 struct msghdr msg = { NULL, }; 515 char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)]; 516 size_t fdsize = sizeof(int) * nfds; 517 struct cmsghdr *cmsg; 518 519 memset(control, 0, CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)); 520 521 msg.msg_iov = (struct iovec *)iov; 522 msg.msg_iovlen = niov; 523 524 if (nfds) { 525 if (nfds > SOCKET_MAX_FDS) { 526 error_setg_errno(errp, EINVAL, 527 "Only %d FDs can be sent, got %zu", 528 SOCKET_MAX_FDS, nfds); 529 return -1; 530 } 531 532 msg.msg_control = control; 533 msg.msg_controllen = CMSG_SPACE(sizeof(int) * nfds); 534 535 cmsg = CMSG_FIRSTHDR(&msg); 536 cmsg->cmsg_len = CMSG_LEN(fdsize); 537 cmsg->cmsg_level = SOL_SOCKET; 538 cmsg->cmsg_type = SCM_RIGHTS; 539 memcpy(CMSG_DATA(cmsg), fds, fdsize); 540 } 541 542 retry: 543 ret = sendmsg(sioc->fd, &msg, 0); 544 if (ret <= 0) { 545 if (errno == EAGAIN) { 546 return QIO_CHANNEL_ERR_BLOCK; 547 } 548 if (errno == EINTR) { 549 goto retry; 550 } 551 error_setg_errno(errp, errno, 552 "Unable to write to socket"); 553 return -1; 554 } 555 return ret; 556 } 557 #else /* WIN32 */ 558 static ssize_t qio_channel_socket_readv(QIOChannel *ioc, 559 const struct iovec *iov, 560 size_t niov, 561 int **fds, 562 size_t *nfds, 563 Error **errp) 564 { 565 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 566 ssize_t done = 0; 567 ssize_t i; 568 569 for (i = 0; i < niov; i++) { 570 ssize_t ret; 571 retry: 572 ret = recv(sioc->fd, 573 iov[i].iov_base, 574 iov[i].iov_len, 575 0); 576 if (ret < 0) { 577 if (errno == EAGAIN) { 578 if (done) { 579 return done; 580 } else { 581 return QIO_CHANNEL_ERR_BLOCK; 582 } 583 } else if (errno == EINTR) { 584 goto retry; 585 } else { 586 error_setg_errno(errp, errno, 587 "Unable to read from socket"); 588 return -1; 589 } 590 } 591 done += ret; 592 if (ret < iov[i].iov_len) { 593 return done; 594 } 595 } 596 597 return done; 598 } 599 600 static ssize_t qio_channel_socket_writev(QIOChannel *ioc, 601 const struct iovec *iov, 602 size_t niov, 603 int *fds, 604 size_t nfds, 605 Error **errp) 606 { 607 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 608 ssize_t done = 0; 609 ssize_t i; 610 611 for (i = 0; i < niov; i++) { 612 ssize_t ret; 613 retry: 614 ret = send(sioc->fd, 615 iov[i].iov_base, 616 iov[i].iov_len, 617 0); 618 if (ret < 0) { 619 if (errno == EAGAIN) { 620 if (done) { 621 return done; 622 } else { 623 return QIO_CHANNEL_ERR_BLOCK; 624 } 625 } else if (errno == EINTR) { 626 goto retry; 627 } else { 628 error_setg_errno(errp, errno, 629 "Unable to write to socket"); 630 return -1; 631 } 632 } 633 done += ret; 634 if (ret < iov[i].iov_len) { 635 return done; 636 } 637 } 638 639 return done; 640 } 641 #endif /* WIN32 */ 642 643 static int 644 qio_channel_socket_set_blocking(QIOChannel *ioc, 645 bool enabled, 646 Error **errp) 647 { 648 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 649 650 if (enabled) { 651 qemu_set_block(sioc->fd); 652 } else { 653 qemu_set_nonblock(sioc->fd); 654 } 655 return 0; 656 } 657 658 659 static void 660 qio_channel_socket_set_delay(QIOChannel *ioc, 661 bool enabled) 662 { 663 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 664 int v = enabled ? 0 : 1; 665 666 qemu_setsockopt(sioc->fd, 667 IPPROTO_TCP, TCP_NODELAY, 668 &v, sizeof(v)); 669 } 670 671 672 static void 673 qio_channel_socket_set_cork(QIOChannel *ioc, 674 bool enabled) 675 { 676 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 677 int v = enabled ? 1 : 0; 678 679 socket_set_cork(sioc->fd, v); 680 } 681 682 683 static int 684 qio_channel_socket_close(QIOChannel *ioc, 685 Error **errp) 686 { 687 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 688 689 if (sioc->fd != -1) { 690 #ifdef WIN32 691 WSAEventSelect(sioc->fd, NULL, 0); 692 #endif 693 if (closesocket(sioc->fd) < 0) { 694 sioc->fd = -1; 695 error_setg_errno(errp, errno, 696 "Unable to close socket"); 697 return -1; 698 } 699 sioc->fd = -1; 700 } 701 return 0; 702 } 703 704 static int 705 qio_channel_socket_shutdown(QIOChannel *ioc, 706 QIOChannelShutdown how, 707 Error **errp) 708 { 709 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 710 int sockhow; 711 712 switch (how) { 713 case QIO_CHANNEL_SHUTDOWN_READ: 714 sockhow = SHUT_RD; 715 break; 716 case QIO_CHANNEL_SHUTDOWN_WRITE: 717 sockhow = SHUT_WR; 718 break; 719 case QIO_CHANNEL_SHUTDOWN_BOTH: 720 default: 721 sockhow = SHUT_RDWR; 722 break; 723 } 724 725 if (shutdown(sioc->fd, sockhow) < 0) { 726 error_setg_errno(errp, errno, 727 "Unable to shutdown socket"); 728 return -1; 729 } 730 return 0; 731 } 732 733 static void qio_channel_socket_set_aio_fd_handler(QIOChannel *ioc, 734 AioContext *ctx, 735 IOHandler *io_read, 736 IOHandler *io_write, 737 void *opaque) 738 { 739 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 740 aio_set_fd_handler(ctx, sioc->fd, false, io_read, io_write, NULL, opaque); 741 } 742 743 static GSource *qio_channel_socket_create_watch(QIOChannel *ioc, 744 GIOCondition condition) 745 { 746 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); 747 return qio_channel_create_socket_watch(ioc, 748 sioc->fd, 749 condition); 750 } 751 752 static void qio_channel_socket_class_init(ObjectClass *klass, 753 void *class_data G_GNUC_UNUSED) 754 { 755 QIOChannelClass *ioc_klass = QIO_CHANNEL_CLASS(klass); 756 757 ioc_klass->io_writev = qio_channel_socket_writev; 758 ioc_klass->io_readv = qio_channel_socket_readv; 759 ioc_klass->io_set_blocking = qio_channel_socket_set_blocking; 760 ioc_klass->io_close = qio_channel_socket_close; 761 ioc_klass->io_shutdown = qio_channel_socket_shutdown; 762 ioc_klass->io_set_cork = qio_channel_socket_set_cork; 763 ioc_klass->io_set_delay = qio_channel_socket_set_delay; 764 ioc_klass->io_create_watch = qio_channel_socket_create_watch; 765 ioc_klass->io_set_aio_fd_handler = qio_channel_socket_set_aio_fd_handler; 766 } 767 768 static const TypeInfo qio_channel_socket_info = { 769 .parent = TYPE_QIO_CHANNEL, 770 .name = TYPE_QIO_CHANNEL_SOCKET, 771 .instance_size = sizeof(QIOChannelSocket), 772 .instance_init = qio_channel_socket_init, 773 .instance_finalize = qio_channel_socket_finalize, 774 .class_init = qio_channel_socket_class_init, 775 }; 776 777 static void qio_channel_socket_register_types(void) 778 { 779 type_register_static(&qio_channel_socket_info); 780 } 781 782 type_init(qio_channel_socket_register_types); 783