diff options
| -rw-r--r-- | io/channel-socket.c | 7 | ||||
| -rw-r--r-- | tests/test-io-channel-socket.c | 96 |
2 files changed, 99 insertions, 4 deletions
diff --git a/io/channel-socket.c b/io/channel-socket.c index eed2ff5bcf..10a5b3136e 100644 --- a/io/channel-socket.c +++ b/io/channel-socket.c @@ -493,15 +493,14 @@ static ssize_t qio_channel_socket_writev(QIOChannel *ioc, QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc); ssize_t ret; struct msghdr msg = { NULL, }; + char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)] = { 0 }; + size_t fdsize = sizeof(int) * nfds; + struct cmsghdr *cmsg; msg.msg_iov = (struct iovec *)iov; msg.msg_iovlen = niov; if (nfds) { - char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)]; - size_t fdsize = sizeof(int) * nfds; - struct cmsghdr *cmsg; - if (nfds > SOCKET_MAX_FDS) { error_setg_errno(errp, -EINVAL, "Only %d FDs can be sent, got %zu", diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c index b0eb5381b7..1a36a3c696 100644 --- a/tests/test-io-channel-socket.c +++ b/tests/test-io-channel-socket.c @@ -376,6 +376,100 @@ 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 */ @@ -414,6 +508,8 @@ int main(int argc, char **argv) test_io_channel_unix_sync); g_test_add_func("/io/channel/socket/unix-async", test_io_channel_unix_async); + g_test_add_func("/io/channel/socket/unix-fd-pass", + test_io_channel_unix_fd_pass); #endif /* _WIN32 */ return g_test_run(); |