static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len) { SocketChardev *s = SOCKET_CHARDEV(chr); struct iovec iov = { .iov_base = buf, .iov_len = len }; int ret; size_t i; int *msgfds = NULL; size_t msgfds_num = 0; if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { ret = qio_channel_readv_full(s->ioc, &iov, 1, &msgfds, &msgfds_num, NULL); } else { ret = qio_channel_readv_full(s->ioc, &iov, 1, NULL, NULL, NULL); } if (ret == QIO_CHANNEL_ERR_BLOCK) { errno = EAGAIN; ret = -1; } else if (ret == -1) { errno = EIO; } if (msgfds_num) { /* close and clean read_msgfds */ for (i = 0; i < s->read_msgfds_num; i++) { close(s->read_msgfds[i]); } if (s->read_msgfds_num) { g_free(s->read_msgfds); } s->read_msgfds = msgfds; s->read_msgfds_num = msgfds_num; } for (i = 0; i < s->read_msgfds_num; i++) { int fd = s->read_msgfds[i]; if (fd < 0) { continue; } /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ qemu_set_block(fd); #ifndef MSG_CMSG_CLOEXEC qemu_set_cloexec(fd); #endif } return ret; }
ssize_t qio_channel_readv(QIOChannel *ioc, const struct iovec *iov, size_t niov, Error **errp) { return qio_channel_readv_full(ioc, iov, niov, NULL, NULL, errp); }
ssize_t qio_channel_read(QIOChannel *ioc, char *buf, size_t buflen, Error **errp) { struct iovec iov = { .iov_base = buf, .iov_len = buflen }; return qio_channel_readv_full(ioc, &iov, 1, NULL, NULL, errp); }
static void test_io_channel_ipv4(bool async) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); listen_addr->type = SOCKET_ADDRESS_TYPE_INET; listen_addr->u.inet = (InetSocketAddress) { .host = g_strdup("127.0.0.1"), .port = NULL, /* Auto-select */ }; connect_addr->type = SOCKET_ADDRESS_TYPE_INET; connect_addr->u.inet = (InetSocketAddress) { .host = g_strdup("127.0.0.1"), .port = NULL, /* Filled in later */ }; test_io_channel(async, listen_addr, connect_addr, false); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); } static void test_io_channel_ipv4_sync(void) { return test_io_channel_ipv4(false); } static void test_io_channel_ipv4_async(void) { return test_io_channel_ipv4(true); } static void test_io_channel_ipv6(bool async) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); listen_addr->type = SOCKET_ADDRESS_TYPE_INET; listen_addr->u.inet = (InetSocketAddress) { .host = g_strdup("::1"), .port = NULL, /* Auto-select */ }; connect_addr->type = SOCKET_ADDRESS_TYPE_INET; connect_addr->u.inet = (InetSocketAddress) { .host = g_strdup("::1"), .port = NULL, /* Filled in later */ }; test_io_channel(async, listen_addr, connect_addr, false); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); } static void test_io_channel_ipv6_sync(void) { return test_io_channel_ipv6(false); } static void test_io_channel_ipv6_async(void) { return test_io_channel_ipv6(true); } #ifndef _WIN32 static void test_io_channel_unix(bool async) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); #define TEST_SOCKET "test-io-channel-socket.sock" listen_addr->type = SOCKET_ADDRESS_TYPE_UNIX; listen_addr->u.q_unix.path = g_strdup(TEST_SOCKET); connect_addr->type = SOCKET_ADDRESS_TYPE_UNIX; connect_addr->u.q_unix.path = g_strdup(TEST_SOCKET); test_io_channel(async, listen_addr, connect_addr, true); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS) == FALSE); } static void test_io_channel_unix_sync(void) { return test_io_channel_unix(false); } static void test_io_channel_unix_async(void) { return test_io_channel_unix(true); } static void test_io_channel_unix_fd_pass(void) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); QIOChannel *src, *dst; int testfd; int fdsend[3]; int *fdrecv = NULL; size_t nfdrecv = 0; size_t i; char bufsend[12], bufrecv[12]; struct iovec iosend[1], iorecv[1]; #define TEST_SOCKET "test-io-channel-socket.sock" #define TEST_FILE "test-io-channel-socket.txt" testfd = open(TEST_FILE, O_RDWR|O_TRUNC|O_CREAT, 0700); g_assert(testfd != -1); fdsend[0] = testfd; fdsend[1] = testfd; fdsend[2] = testfd; listen_addr->type = SOCKET_ADDRESS_TYPE_UNIX; listen_addr->u.q_unix.path = g_strdup(TEST_SOCKET); connect_addr->type = SOCKET_ADDRESS_TYPE_UNIX; connect_addr->u.q_unix.path = g_strdup(TEST_SOCKET); test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst); memcpy(bufsend, "Hello World", G_N_ELEMENTS(bufsend)); iosend[0].iov_base = bufsend; iosend[0].iov_len = G_N_ELEMENTS(bufsend); iorecv[0].iov_base = bufrecv; iorecv[0].iov_len = G_N_ELEMENTS(bufrecv); g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); qio_channel_writev_full(src, iosend, G_N_ELEMENTS(iosend), fdsend, G_N_ELEMENTS(fdsend), &error_abort); qio_channel_readv_full(dst, iorecv, G_N_ELEMENTS(iorecv), &fdrecv, &nfdrecv, &error_abort); g_assert(nfdrecv == G_N_ELEMENTS(fdsend)); /* Each recvd FD should be different from sent FD */ for (i = 0; i < nfdrecv; i++) { g_assert_cmpint(fdrecv[i], !=, testfd); } /* Each recvd FD should be different from each other */ g_assert_cmpint(fdrecv[0], !=, fdrecv[1]); g_assert_cmpint(fdrecv[0], !=, fdrecv[2]); g_assert_cmpint(fdrecv[1], !=, fdrecv[2]); /* Check the I/O buf we sent at the same time matches */ g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); /* Write some data into the FD we received */ g_assert(write(fdrecv[0], bufsend, G_N_ELEMENTS(bufsend)) == G_N_ELEMENTS(bufsend)); /* Read data from the original FD and make sure it matches */ memset(bufrecv, 0, G_N_ELEMENTS(bufrecv)); g_assert(lseek(testfd, 0, SEEK_SET) == 0); g_assert(read(testfd, bufrecv, G_N_ELEMENTS(bufrecv)) == G_N_ELEMENTS(bufrecv)); g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); object_unref(OBJECT(src)); object_unref(OBJECT(dst)); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); unlink(TEST_SOCKET); unlink(TEST_FILE); close(testfd); for (i = 0; i < nfdrecv; i++) { close(fdrecv[i]); } g_free(fdrecv); } static void test_io_channel_unix_listen_cleanup(void) { QIOChannelSocket *ioc; struct sockaddr_un un; int sock; #define TEST_SOCKET "test-io-channel-socket.sock" ioc = qio_channel_socket_new(); /* Manually bind ioc without calling the qio api to avoid setting * the LISTEN feature */ sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); memset(&un, 0, sizeof(un)); un.sun_family = AF_UNIX; snprintf(un.sun_path, sizeof(un.sun_path), "%s", TEST_SOCKET); unlink(TEST_SOCKET); bind(sock, (struct sockaddr *)&un, sizeof(un)); ioc->fd = sock; ioc->localAddrLen = sizeof(ioc->localAddr); getsockname(sock, (struct sockaddr *)&ioc->localAddr, &ioc->localAddrLen); g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS)); object_unref(OBJECT(ioc)); g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS)); unlink(TEST_SOCKET); }
static void test_io_channel_ipv4(bool async) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); listen_addr->type = SOCKET_ADDRESS_KIND_INET; listen_addr->u.inet = g_new(InetSocketAddress, 1); *listen_addr->u.inet = (InetSocketAddress) { .host = g_strdup("127.0.0.1"), .port = NULL, /* Auto-select */ }; connect_addr->type = SOCKET_ADDRESS_KIND_INET; connect_addr->u.inet = g_new(InetSocketAddress, 1); *connect_addr->u.inet = (InetSocketAddress) { .host = g_strdup("127.0.0.1"), .port = NULL, /* Filled in later */ }; test_io_channel(async, listen_addr, connect_addr, false); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); } static void test_io_channel_ipv4_sync(void) { return test_io_channel_ipv4(false); } static void test_io_channel_ipv4_async(void) { return test_io_channel_ipv4(true); } static void test_io_channel_ipv6(bool async) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); listen_addr->type = SOCKET_ADDRESS_KIND_INET; listen_addr->u.inet = g_new(InetSocketAddress, 1); *listen_addr->u.inet = (InetSocketAddress) { .host = g_strdup("::1"), .port = NULL, /* Auto-select */ }; connect_addr->type = SOCKET_ADDRESS_KIND_INET; connect_addr->u.inet = g_new(InetSocketAddress, 1); *connect_addr->u.inet = (InetSocketAddress) { .host = g_strdup("::1"), .port = NULL, /* Filled in later */ }; test_io_channel(async, listen_addr, connect_addr, false); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); } static void test_io_channel_ipv6_sync(void) { return test_io_channel_ipv6(false); } static void test_io_channel_ipv6_async(void) { return test_io_channel_ipv6(true); } #ifndef _WIN32 static void test_io_channel_unix(bool async) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); #define TEST_SOCKET "test-io-channel-socket.sock" listen_addr->type = SOCKET_ADDRESS_KIND_UNIX; listen_addr->u.q_unix = g_new0(UnixSocketAddress, 1); listen_addr->u.q_unix->path = g_strdup(TEST_SOCKET); connect_addr->type = SOCKET_ADDRESS_KIND_UNIX; connect_addr->u.q_unix = g_new0(UnixSocketAddress, 1); connect_addr->u.q_unix->path = g_strdup(TEST_SOCKET); test_io_channel(async, listen_addr, connect_addr, true); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); unlink(TEST_SOCKET); } static void test_io_channel_unix_sync(void) { return test_io_channel_unix(false); } static void test_io_channel_unix_async(void) { return test_io_channel_unix(true); } static void test_io_channel_unix_fd_pass(void) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); QIOChannel *src, *dst; int testfd; int fdsend[3]; int *fdrecv = NULL; size_t nfdrecv = 0; size_t i; char bufsend[12], bufrecv[12]; struct iovec iosend[1], iorecv[1]; #define TEST_SOCKET "test-io-channel-socket.sock" #define TEST_FILE "test-io-channel-socket.txt" testfd = open(TEST_FILE, O_RDWR|O_TRUNC|O_CREAT, 0700); g_assert(testfd != -1); fdsend[0] = testfd; fdsend[1] = testfd; fdsend[2] = testfd; listen_addr->type = SOCKET_ADDRESS_KIND_UNIX; listen_addr->u.q_unix = g_new0(UnixSocketAddress, 1); listen_addr->u.q_unix->path = g_strdup(TEST_SOCKET); connect_addr->type = SOCKET_ADDRESS_KIND_UNIX; connect_addr->u.q_unix = g_new0(UnixSocketAddress, 1); connect_addr->u.q_unix->path = g_strdup(TEST_SOCKET); test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst); memcpy(bufsend, "Hello World", G_N_ELEMENTS(bufsend)); iosend[0].iov_base = bufsend; iosend[0].iov_len = G_N_ELEMENTS(bufsend); iorecv[0].iov_base = bufrecv; iorecv[0].iov_len = G_N_ELEMENTS(bufrecv); g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); qio_channel_writev_full(src, iosend, G_N_ELEMENTS(iosend), fdsend, G_N_ELEMENTS(fdsend), &error_abort); qio_channel_readv_full(dst, iorecv, G_N_ELEMENTS(iorecv), &fdrecv, &nfdrecv, &error_abort); g_assert(nfdrecv == G_N_ELEMENTS(fdsend)); /* Each recvd FD should be different from sent FD */ for (i = 0; i < nfdrecv; i++) { g_assert_cmpint(fdrecv[i], !=, testfd); } /* Each recvd FD should be different from each other */ g_assert_cmpint(fdrecv[0], !=, fdrecv[1]); g_assert_cmpint(fdrecv[0], !=, fdrecv[2]); g_assert_cmpint(fdrecv[1], !=, fdrecv[2]); /* Check the I/O buf we sent at the same time matches */ g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); /* Write some data into the FD we received */ g_assert(write(fdrecv[0], bufsend, G_N_ELEMENTS(bufsend)) == G_N_ELEMENTS(bufsend)); /* Read data from the original FD and make sure it matches */ memset(bufrecv, 0, G_N_ELEMENTS(bufrecv)); g_assert(lseek(testfd, 0, SEEK_SET) == 0); g_assert(read(testfd, bufrecv, G_N_ELEMENTS(bufrecv)) == G_N_ELEMENTS(bufrecv)); g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); object_unref(OBJECT(src)); object_unref(OBJECT(dst)); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); unlink(TEST_SOCKET); unlink(TEST_FILE); close(testfd); for (i = 0; i < nfdrecv; i++) { close(fdrecv[i]); } g_free(fdrecv); } #endif /* _WIN32 */ static void test_io_channel_ipv4_fd(void) { QIOChannel *ioc; int fd = -1; fd = socket(AF_INET, SOCK_STREAM, 0); g_assert_cmpint(fd, >, -1); ioc = qio_channel_new_fd(fd, &error_abort); g_assert_cmpstr(object_get_typename(OBJECT(ioc)), ==, TYPE_QIO_CHANNEL_SOCKET); object_unref(OBJECT(ioc)); }
static void test_io_channel_unix_fd_pass(void) { SocketAddress *listen_addr = g_new0(SocketAddress, 1); SocketAddress *connect_addr = g_new0(SocketAddress, 1); QIOChannel *src, *dst; int testfd; int fdsend[3]; int *fdrecv = NULL; size_t nfdrecv = 0; size_t i; char bufsend[12], bufrecv[12]; struct iovec iosend[1], iorecv[1]; #define TEST_SOCKET "test-io-channel-socket.sock" #define TEST_FILE "test-io-channel-socket.txt" testfd = open(TEST_FILE, O_RDWR|O_TRUNC|O_CREAT, 0700); g_assert(testfd != -1); fdsend[0] = testfd; fdsend[1] = testfd; fdsend[2] = testfd; listen_addr->type = SOCKET_ADDRESS_KIND_UNIX; listen_addr->u.q_unix = g_new0(UnixSocketAddress, 1); listen_addr->u.q_unix->path = g_strdup(TEST_SOCKET); connect_addr->type = SOCKET_ADDRESS_KIND_UNIX; connect_addr->u.q_unix = g_new0(UnixSocketAddress, 1); connect_addr->u.q_unix->path = g_strdup(TEST_SOCKET); test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst); memcpy(bufsend, "Hello World", G_N_ELEMENTS(bufsend)); iosend[0].iov_base = bufsend; iosend[0].iov_len = G_N_ELEMENTS(bufsend); iorecv[0].iov_base = bufrecv; iorecv[0].iov_len = G_N_ELEMENTS(bufrecv); g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); qio_channel_writev_full(src, iosend, G_N_ELEMENTS(iosend), fdsend, G_N_ELEMENTS(fdsend), &error_abort); qio_channel_readv_full(dst, iorecv, G_N_ELEMENTS(iorecv), &fdrecv, &nfdrecv, &error_abort); g_assert(nfdrecv == G_N_ELEMENTS(fdsend)); /* Each recvd FD should be different from sent FD */ for (i = 0; i < nfdrecv; i++) { g_assert_cmpint(fdrecv[i], !=, testfd); } /* Each recvd FD should be different from each other */ g_assert_cmpint(fdrecv[0], !=, fdrecv[1]); g_assert_cmpint(fdrecv[0], !=, fdrecv[2]); g_assert_cmpint(fdrecv[1], !=, fdrecv[2]); /* Check the I/O buf we sent at the same time matches */ g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); /* Write some data into the FD we received */ g_assert(write(fdrecv[0], bufsend, G_N_ELEMENTS(bufsend)) == G_N_ELEMENTS(bufsend)); /* Read data from the original FD and make sure it matches */ memset(bufrecv, 0, G_N_ELEMENTS(bufrecv)); g_assert(lseek(testfd, 0, SEEK_SET) == 0); g_assert(read(testfd, bufrecv, G_N_ELEMENTS(bufrecv)) == G_N_ELEMENTS(bufrecv)); g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); object_unref(OBJECT(src)); object_unref(OBJECT(dst)); qapi_free_SocketAddress(listen_addr); qapi_free_SocketAddress(connect_addr); unlink(TEST_SOCKET); unlink(TEST_FILE); close(testfd); for (i = 0; i < nfdrecv; i++) { close(fdrecv[i]); } g_free(fdrecv); }