#include "qemu/osdep.h" #include #include "qemu/config-file.h" #include "qemu/option.h" #include "qemu/sockets.h" #include "chardev/char-fe.h" #include "chardev/char-mux.h" #include "sysemu/sysemu.h" #include "qapi/error.h" #include "qapi/qapi-commands-char.h" #include "qapi/qmp/qdict.h" #include "qom/qom-qobject.h" static bool quit; typedef struct FeHandler { int read_count; int last_event; char read_buf[128]; } FeHandler; static void main_loop(void) { quit = false; do { main_loop_wait(false); } while (!quit); } static int fe_can_read(void *opaque) { FeHandler *h = opaque; return sizeof(h->read_buf) - h->read_count; } static void fe_read(void *opaque, const uint8_t *buf, int size) { FeHandler *h = opaque; g_assert_cmpint(size, <=, fe_can_read(opaque)); memcpy(h->read_buf + h->read_count, buf, size); h->read_count += size; quit = true; } static void fe_event(void *opaque, int event) { FeHandler *h = opaque; h->last_event = event; if (event != CHR_EVENT_BREAK) { quit = true; } } #ifdef _WIN32 static void char_console_test_subprocess(void) { QemuOpts *opts; Chardev *chr; opts = qemu_opts_create(qemu_find_opts("chardev"), "console-label", 1, &error_abort); qemu_opt_set(opts, "backend", "console", &error_abort); chr = qemu_chr_new_from_opts(opts, NULL); g_assert_nonnull(chr); qemu_chr_write_all(chr, (const uint8_t *)"CONSOLE", 7); qemu_opts_del(opts); object_unparent(OBJECT(chr)); } static void char_console_test(void) { g_test_trap_subprocess("/char/console/subprocess", 0, 0); g_test_trap_assert_passed(); g_test_trap_assert_stdout("CONSOLE"); } #endif static void char_stdio_test_subprocess(void) { Chardev *chr; CharBackend be; int ret; chr = qemu_chr_new("label", "stdio"); g_assert_nonnull(chr); qemu_chr_fe_init(&be, chr, &error_abort); qemu_chr_fe_set_open(&be, true); ret = qemu_chr_fe_write(&be, (void *)"buf", 4); g_assert_cmpint(ret, ==, 4); qemu_chr_fe_deinit(&be, true); } static void char_stdio_test(void) { g_test_trap_subprocess("/char/stdio/subprocess", 0, 0); g_test_trap_assert_passed(); g_test_trap_assert_stdout("buf"); } static void char_ringbuf_test(void) { QemuOpts *opts; Chardev *chr; CharBackend be; char *data; int ret; opts = qemu_opts_create(qemu_find_opts("chardev"), "ringbuf-label", 1, &error_abort); qemu_opt_set(opts, "backend", "ringbuf", &error_abort); qemu_opt_set(opts, "size", "5", &error_abort); chr = qemu_chr_new_from_opts(opts, NULL); g_assert_null(chr); qemu_opts_del(opts); opts = qemu_opts_create(qemu_find_opts("chardev"), "ringbuf-label", 1, &error_abort); qemu_opt_set(opts, "backend", "ringbuf", &error_abort); qemu_opt_set(opts, "size", "2", &error_abort); chr = qemu_chr_new_from_opts(opts, &error_abort); g_assert_nonnull(chr); qemu_opts_del(opts); qemu_chr_fe_init(&be, chr, &error_abort); ret = qemu_chr_fe_write(&be, (void *)"buff", 4); g_assert_cmpint(ret, ==, 4); data = qmp_ringbuf_read("ringbuf-label", 4, false, 0, &error_abort); g_assert_cmpstr(data, ==, "ff"); g_free(data); data = qmp_ringbuf_read("ringbuf-label", 4, false, 0, &error_abort); g_assert_cmpstr(data, ==, ""); g_free(data); qemu_chr_fe_deinit(&be, true); /* check alias */ opts = qemu_opts_create(qemu_find_opts("chardev"), "memory-label", 1, &error_abort); qemu_opt_set(opts, "backend", "memory", &error_abort); qemu_opt_set(opts, "size", "2", &error_abort); chr = qemu_chr_new_from_opts(opts, NULL); g_assert_nonnull(chr); object_unparent(OBJECT(chr)); qemu_opts_del(opts); } static void char_mux_test(void) { QemuOpts *opts; Chardev *chr, *base; char *data; FeHandler h1 = { 0, }, h2 = { 0, }; CharBackend chr_be1, chr_be2; opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label", 1, &error_abort); qemu_opt_set(opts, "backend", "ringbuf", &error_abort); qemu_opt_set(opts, "size", "128", &error_abort); qemu_opt_set(opts, "mux", "on", &error_abort); chr = qemu_chr_new_from_opts(opts, &error_abort); g_assert_nonnull(chr); qemu_opts_del(opts); qemu_chr_fe_init(&chr_be1, chr, &error_abort); qemu_chr_fe_set_handlers(&chr_be1, fe_can_read, fe_read, fe_event, NULL, &h1, NULL, true); qemu_chr_fe_init(&chr_be2, chr, &error_abort); qemu_chr_fe_set_handlers(&chr_be2, fe_can_read, fe_read, fe_event, NULL, &h2, NULL, true); qemu_chr_fe_take_focus(&chr_be2); base = qemu_chr_find("mux-label-base"); g_assert_cmpint(qemu_chr_be_can_write(base), !=, 0); qemu_chr_be_write(base, (void *)"hello", 6); g_assert_cmpint(h1.read_count, ==, 0); g_assert_cmpint(h2.read_count, ==, 6); g_assert_cmpstr(h2.read_buf, ==, "hello"); h2.read_count = 0; g_assert_cmpint(h1.last_event, !=, 42); /* should be MUX_OUT or OPENED */ g_assert_cmpint(h2.last_event, !=, 42); /* should be MUX_IN or OPENED */ /* sending event on the base broadcast to all fe, historical reasons? */ qemu_chr_be_event(base, 42); g_assert_cmpint(h1.last_event, ==, 42); g_assert_cmpint(h2.last_event, ==, 42); qemu_chr_be_event(chr, -1); g_assert_cmpint(h1.last_event, ==, 42); g_assert_cmpint(h2.last_event, ==, -1); /* switch focus */ qemu_chr_be_write(base, (void *)"\1b", 2); g_assert_cmpint(h1.last_event, ==, 42); g_assert_cmpint(h2.last_event, ==, CHR_EVENT_BREAK); qemu_chr_be_write(base, (void *)"\1c", 2); g_assert_cmpint(h1.last_event, ==, CHR_EVENT_MUX_IN); g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT); qemu_chr_be_event(chr, -1); g_assert_cmpint(h1.last_event, ==, -1); g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT); qemu_chr_be_write(base, (void *)"hello", 6); g_assert_cmpint(h2.read_count, ==, 0); g_assert_cmpint(h1.read_count, ==, 6); g_assert_cmpstr(h1.read_buf, ==, "hello"); h1.read_count = 0; qemu_chr_be_write(base, (void *)"\1b", 2); g_assert_cmpint(h1.last_event, ==, CHR_EVENT_BREAK); g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT); /* remove first handler */ qemu_chr_fe_set_handlers(&chr_be1, NULL, NULL, NULL, NULL, NULL, NULL, true); qemu_chr_be_write(base, (void *)"hello", 6); g_assert_cmpint(h1.read_count, ==, 0); g_assert_cmpint(h2.read_count, ==, 0); qemu_chr_be_write(base, (void *)"\1c", 2); qemu_chr_be_write(base, (void *)"hello", 6); g_assert_cmpint(h1.read_count, ==, 0); g_assert_cmpint(h2.read_count, ==, 6); g_assert_cmpstr(h2.read_buf, ==, "hello"); h2.read_count = 0; /* print help */ qemu_chr_be_write(base, (void *)"\1?", 2); data = qmp_ringbuf_read("mux-label-base", 128, false, 0, &error_abort); g_assert_cmpint(strlen(data), !=, 0); g_free(data); qemu_chr_fe_deinit(&chr_be1, false); qemu_chr_fe_deinit(&chr_be2, true); } typedef struct SocketIdleData { GMainLoop *loop; Chardev *chr; bool conn_expected; CharBackend *be; CharBackend *client_be; } SocketIdleData; static gboolean char_socket_test_idle(gpointer user_data) { SocketIdleData *data = user_data; if (object_property_get_bool(OBJECT(data->chr), "connected", NULL) == data->conn_expected) { quit = true; return FALSE; } return TRUE; } static void socket_read(void *opaque, const uint8_t *buf, int size) { SocketIdleData *data = opaque; g_assert_cmpint(size, ==, 1); g_assert_cmpint(*buf, ==, 'Z'); size = qemu_chr_fe_write(data->be, (const uint8_t *)"hello", 5); g_assert_cmpint(size, ==, 5); } static int socket_can_read(void *opaque) { return 10; } static void socket_read_hello(void *opaque, const uint8_t *buf, int size) { g_assert_cmpint(size, ==, 5); g_assert(strncmp((char *)buf, "hello", 5) == 0); quit = true; } static int socket_can_read_hello(void *opaque) { return 10; } static void char_socket_test_common(Chardev *chr) { Chardev *chr_client; QObject *addr; QDict *qdict; const char *port; SocketIdleData d = { .chr = chr }; CharBackend be; CharBackend client_be; char *tmp; d.be = &be; d.client_be = &be; g_assert_nonnull(chr); g_assert(!object_property_get_bool(OBJECT(chr), "connected", &error_abort)); addr = object_property_get_qobject(OBJECT(chr), "addr", &error_abort); qdict = qobject_to(QDict, addr); port = qdict_get_str(qdict, "port"); tmp = g_strdup_printf("tcp:127.0.0.1:%s", port); qobject_unref(qdict); qemu_chr_fe_init(&be, chr, &error_abort); qemu_chr_fe_set_handlers(&be, socket_can_read, socket_read, NULL, NULL, &d, NULL, true); chr_client = qemu_chr_new("client", tmp); qemu_chr_fe_init(&client_be, chr_client, &error_abort); qemu_chr_fe_set_handlers(&client_be, socket_can_read_hello, socket_read_hello, NULL, NULL, &d, NULL, true); g_free(tmp); d.conn_expected = true; guint id = g_idle_add(char_socket_test_idle, &d); g_source_set_name_by_id(id, "test-idle"); g_assert_cmpint(id, >, 0); main_loop(); g_assert(object_property_get_bool(OBJECT(chr), "connected", &error_abort)); g_assert(object_property_get_bool(OBJECT(chr_client), "connected", &error_abort)); qemu_chr_write_all(chr_client, (const uint8_t *)"Z", 1); main_loop(); object_unparent(OBJECT(chr_client)); d.conn_expected = false; g_idle_add(char_socket_test_idle, &d); main_loop(); object_unparent(OBJECT(chr)); } static void char_socket_basic_test(void) { Chardev *chr = qemu_chr_new("server", "tcp:127.0.0.1:0,server,nowait"); char_socket_test_common(chr); } static void char_socket_fdpass_test(void) { Chardev *chr; char *optstr; QemuOpts *opts; int fd; SocketAddress *addr = g_new0(SocketAddress, 1); addr->type = SOCKET_ADDRESS_TYPE_INET; addr->u.inet.host = g_strdup("127.0.0.1"); addr->u.inet.port = g_strdup("0"); fd = socket_listen(addr, &error_abort); g_assert(fd >= 0); qapi_free_SocketAddress(addr); optstr = g_strdup_printf("socket,id=cdev,fd=%d,server,nowait", fd); opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), optstr, true); g_free(optstr); g_assert_nonnull(opts); chr = qemu_chr_new_from_opts(opts, &error_abort); qemu_opts_del(opts); char_socket_test_common(chr); } #ifndef _WIN32 static void char_pipe_test(void) { gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL); gchar *tmp, *in, *out, *pipe = g_build_filename(tmp_path, "pipe", NULL); Chardev *chr; CharBackend be; int ret, fd; char buf[10]; FeHandler fe = { 0, }; in = g_strdup_printf("%s.in", pipe); if (mkfifo(in, 0600) < 0) { abort(); } out = g_strdup_printf("%s.out", pipe); if (mkfifo(out, 0600) < 0) { abort(); } tmp = g_strdup_printf("pipe:%s", pipe); chr = qemu_chr_new("pipe", tmp); g_assert_nonnull(chr); g_free(tmp); qemu_chr_fe_init(&be, chr, &error_abort); ret = qemu_chr_fe_write(&be, (void *)"pipe-out", 9); g_assert_cmpint(ret, ==, 9); fd = open(out, O_RDWR); ret = read(fd, buf, sizeof(buf)); g_assert_cmpint(ret, ==, 9); g_assert_cmpstr(buf, ==, "pipe-out"); close(fd); fd = open(in, O_WRONLY); ret = write(fd, "pipe-in", 8); g_assert_cmpint(ret, ==, 8); close(fd); qemu_chr_fe_set_handlers(&be, fe_can_read, fe_read, fe_event, NULL, &fe, NULL, true); main_loop(); g_assert_cmpint(fe.read_count, ==, 8); g_assert_cmpstr(fe.read_buf, ==, "pipe-in"); qemu_chr_fe_deinit(&be, true); g_assert(g_unlink(in) == 0); g_assert(g_unlink(out) == 0); g_assert(g_rmdir(tmp_path) == 0); g_free(in); g_free(out); g_free(tmp_path); g_free(pipe); } #endif static int make_udp_socket(int *port) { struct sockaddr_in addr = { 0, }; socklen_t alen = sizeof(addr); int ret, sock = qemu_socket(PF_INET, SOCK_DGRAM, 0); g_assert_cmpint(sock, >, 0); addr.sin_family = AF_INET ; addr.sin_addr.s_addr = htonl(INADDR_ANY); addr.sin_port = 0; ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr)); g_assert_cmpint(ret, ==, 0); ret = getsockname(sock, (struct sockaddr *)&addr, &alen); g_assert_cmpint(ret, ==, 0); *port = ntohs(addr.sin_port); return sock; } static void char_udp_test_internal(Chardev *reuse_chr, int sock) { struct sockaddr_in other; SocketIdleData d = { 0, }; Chardev *chr; CharBackend *be; socklen_t alen = sizeof(other); int ret; char buf[10]; char *tmp = NULL; if (reuse_chr) { chr = reuse_chr; be = chr->be; } else { int port; sock = make_udp_socket(&port); tmp = g_strdup_printf("udp:127.0.0.1:%d", port); chr = qemu_chr_new("client", tmp); g_assert_nonnull(chr); be = g_alloca(sizeof(CharBackend)); qemu_chr_fe_init(be, chr, &error_abort); } d.chr = chr; qemu_chr_fe_set_handlers(be, socket_can_read_hello, socket_read_hello, NULL, NULL, &d, NULL, true); ret = qemu_chr_write_all(chr, (uint8_t *)"hello", 5); g_assert_cmpint(ret, ==, 5); ret = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *)&other, &alen); g_assert_cmpint(ret, ==, 5); ret = sendto(sock, buf, 5, 0, (struct sockaddr *)&other, alen); g_assert_cmpint(ret, ==, 5); main_loop(); if (!reuse_chr) { close(sock); qemu_chr_fe_deinit(be, true); } g_free(tmp); } static void char_udp_test(void) { char_udp_test_internal(NULL, 0); } #ifdef HAVE_CHARDEV_SERIAL static void char_serial_test(void) { QemuOpts *opts; Chardev *chr; opts = qemu_opts_create(qemu_find_opts("chardev"), "serial-id", 1, &error_abort); qemu_opt_set(opts, "backend", "serial", &error_abort); qemu_opt_set(opts, "path", "/dev/null", &error_abort); chr = qemu_chr_new_from_opts(opts, NULL); g_assert_nonnull(chr); /* TODO: add more tests with a pty */ object_unparent(OBJECT(chr)); /* test tty alias */ qemu_opt_set(opts, "backend", "tty", &error_abort); chr = qemu_chr_new_from_opts(opts, NULL); g_assert_nonnull(chr); object_unparent(OBJECT(chr)); qemu_opts_del(opts); } #endif #ifndef _WIN32 static void char_file_fifo_test(void) { Chardev *chr; CharBackend be; char *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL); char *fifo = g_build_filename(tmp_path, "fifo", NULL); char *out = g_build_filename(tmp_path, "out", NULL); ChardevFile file = { .in = fifo, .has_in = true, .out = out }; ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE, .u.file.data = &file }; FeHandler fe = { 0, }; int fd, ret; if (mkfifo(fifo, 0600) < 0) { abort(); } fd = open(fifo, O_RDWR); ret = write(fd, "fifo-in", 8); g_assert_cmpint(ret, ==, 8); chr = qemu_chardev_new("label-file", TYPE_CHARDEV_FILE, &backend, &error_abort); qemu_chr_fe_init(&be, chr, &error_abort); qemu_chr_fe_set_handlers(&be, fe_can_read, fe_read, fe_event, NULL, &fe, NULL, true); g_assert_cmpint(fe.last_event, !=, CHR_EVENT_BREAK); qmp_chardev_send_break("label-foo", NULL); g_assert_cmpint(fe.last_event, !=, CHR_EVENT_BREAK); qmp_chardev_send_break("label-file", NULL); g_assert_cmpint(fe.last_event, ==, CHR_EVENT_BREAK); main_loop(); close(fd); g_assert_cmpint(fe.read_count, ==, 8); g_assert_cmpstr(fe.read_buf, ==, "fifo-in"); qemu_chr_fe_deinit(&be, true); g_unlink(fifo); g_free(fifo); g_unlink(out); g_free(out); g_rmdir(tmp_path); g_free(tmp_path); } #endif static void char_file_test_internal(Chardev *ext_chr, const char *filepath) { char *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL); char *out; Chardev *chr; char *contents = NULL; ChardevFile file = {}; ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE, .u.file.data = &file }; gsize length; int ret; if (ext_chr) { chr = ext_chr; out = g_strdup(filepath); file.out = out; } else { out = g_build_filename(tmp_path, "out", NULL); file.out = out; chr = qemu_chardev_new(NULL, TYPE_CHARDEV_FILE, &backend, &error_abort); } ret = qemu_chr_write_all(chr, (uint8_t *)"hello!", 6); g_assert_cmpint(ret, ==, 6); ret = g_file_get_contents(out, &contents, &length, NULL); g_assert(ret == TRUE); g_assert_cmpint(length, ==, 6); g_assert(strncmp(contents, "hello!", 6) == 0); if (!ext_chr) { object_unref(OBJECT(chr)); g_unlink(out); } g_free(contents); g_rmdir(tmp_path); g_free(tmp_path); g_free(out); } static void char_file_test(void) { char_file_test_internal(NULL, NULL); } static void char_null_test(void) { Error *err = NULL; Chardev *chr; CharBackend be; int ret; chr = qemu_chr_find("label-null"); g_assert_null(chr); chr = qemu_chr_new("label-null", "null"); chr = qemu_chr_find("label-null"); g_assert_nonnull(chr); g_assert(qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_FD_PASS) == false); g_assert(qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE) == false); /* check max avail */ qemu_chr_fe_init(&be, chr, &error_abort); qemu_chr_fe_init(&be, chr, &err); error_free_or_abort(&err); /* deinit & reinit */ qemu_chr_fe_deinit(&be, false); qemu_chr_fe_init(&be, chr, &error_abort); qemu_chr_fe_set_open(&be, true); qemu_chr_fe_set_handlers(&be, fe_can_read, fe_read, fe_event, NULL, NULL, NULL, true); ret = qemu_chr_fe_write(&be, (void *)"buf", 4); g_assert_cmpint(ret, ==, 4); qemu_chr_fe_deinit(&be, true); } static void char_invalid_test(void) { Chardev *chr; chr = qemu_chr_new("label-invalid", "invalid"); g_assert_null(chr); } static int chardev_change(void *opaque) { return 0; } static int chardev_change_denied(void *opaque) { return -1; } static void char_hotswap_test(void) { char *chr_args; Chardev *chr; CharBackend be; gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL); char *filename = g_build_filename(tmp_path, "file", NULL); ChardevFile file = { .out = filename }; ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE, .u.file.data = &file }; ChardevReturn *ret; int port; int sock = make_udp_socket(&port); g_assert_cmpint(sock, >, 0); chr_args = g_strdup_printf("udp:127.0.0.1:%d", port); chr = qemu_chr_new("chardev", chr_args); qemu_chr_fe_init(&be, chr, &error_abort); /* check that chardev operates correctly */ char_udp_test_internal(chr, sock); /* set the handler that denies the hotswap */ qemu_chr_fe_set_handlers(&be, NULL, NULL, NULL, chardev_change_denied, NULL, NULL, true); /* now, change is denied and has to keep the old backend operating */ ret = qmp_chardev_change("chardev", &backend, NULL); g_assert(!ret); g_assert(be.chr == chr); char_udp_test_internal(chr, sock); /* now allow the change */ qemu_chr_fe_set_handlers(&be, NULL, NULL, NULL, chardev_change, NULL, NULL, true); /* has to succeed now */ ret = qmp_chardev_change("chardev", &backend, &error_abort); g_assert(be.chr != chr); close(sock); chr = be.chr; /* run the file chardev test */ char_file_test_internal(chr, filename); object_unparent(OBJECT(chr)); qapi_free_ChardevReturn(ret); g_unlink(filename); g_free(filename); g_rmdir(tmp_path); g_free(tmp_path); g_free(chr_args); } int main(int argc, char **argv) { qemu_init_main_loop(&error_abort); socket_init(); g_test_init(&argc, &argv, NULL); module_call_init(MODULE_INIT_QOM); qemu_add_opts(&qemu_chardev_opts); g_test_add_func("/char/null", char_null_test); g_test_add_func("/char/invalid", char_invalid_test); g_test_add_func("/char/ringbuf", char_ringbuf_test); g_test_add_func("/char/mux", char_mux_test); #ifdef _WIN32 g_test_add_func("/char/console/subprocess", char_console_test_subprocess); g_test_add_func("/char/console", char_console_test); #endif g_test_add_func("/char/stdio/subprocess", char_stdio_test_subprocess); g_test_add_func("/char/stdio", char_stdio_test); #ifndef _WIN32 g_test_add_func("/char/pipe", char_pipe_test); #endif g_test_add_func("/char/file", char_file_test); #ifndef _WIN32 g_test_add_func("/char/file-fifo", char_file_fifo_test); #endif g_test_add_func("/char/socket/basic", char_socket_basic_test); g_test_add_func("/char/socket/fdpass", char_socket_fdpass_test); g_test_add_func("/char/udp", char_udp_test); #ifdef HAVE_CHARDEV_SERIAL g_test_add_func("/char/serial", char_serial_test); #endif g_test_add_func("/char/hotswap", char_hotswap_test); return g_test_run(); }