diff options
Diffstat (limited to 'qemu-char.c')
| -rw-r--r-- | qemu-char.c | 363 |
1 files changed, 179 insertions, 184 deletions
diff --git a/qemu-char.c b/qemu-char.c index 1a8d9aa543..8623c70964 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -1017,6 +1017,7 @@ static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) /* init terminal so that we can grab keys */ static struct termios oldtty; static int old_fd0_flags; +static bool stdio_in_use; static bool stdio_allow_signal; static void term_exit(void) @@ -1060,8 +1061,15 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) error_report("cannot use stdio with -daemonize"); return NULL; } + + if (stdio_in_use) { + error_report("cannot use stdio by multiple character devices"); + exit(1); + } + + stdio_in_use = true; old_fd0_flags = fcntl(0, F_GETFL); - tcgetattr (0, &oldtty); + tcgetattr(0, &oldtty); qemu_set_nonblock(0); atexit(term_exit); @@ -2385,20 +2393,6 @@ static CharDriverState *qemu_chr_open_udp_fd(int fd) return chr; } -static CharDriverState *qemu_chr_open_udp(QemuOpts *opts) -{ - Error *local_err = NULL; - int fd = -1; - - fd = inet_dgram_opts(opts, &local_err); - if (fd < 0) { - qerror_report_err(local_err); - error_free(local_err); - return NULL; - } - return qemu_chr_open_udp_fd(fd); -} - /***********************************************************/ /* TCP Net console */ @@ -2985,61 +2979,6 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, return chr; } -static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) -{ - CharDriverState *chr = NULL; - Error *local_err = NULL; - int fd = -1; - - bool is_listen = qemu_opt_get_bool(opts, "server", false); - bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); - bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); - bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); - bool is_unix = qemu_opt_get(opts, "path") != NULL; - - if (is_unix) { - if (is_listen) { - fd = unix_listen_opts(opts, &local_err); - } else { - fd = unix_connect_opts(opts, &local_err, NULL, NULL); - } - } else { - if (is_listen) { - fd = inet_listen_opts(opts, 0, &local_err); - } else { - fd = inet_connect_opts(opts, &local_err, NULL, NULL); - } - } - if (fd < 0) { - goto fail; - } - - if (!is_waitconnect) - qemu_set_nonblock(fd); - - chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet, - is_waitconnect, &local_err); - if (local_err) { - goto fail; - } - return chr; - - - fail: - if (local_err) { - qerror_report_err(local_err); - error_free(local_err); - } - if (fd >= 0) { - closesocket(fd); - } - if (chr) { - g_free(chr->opaque); - g_free(chr); - } - return NULL; -} - /*********************************************************/ /* Ring buffer chardev */ @@ -3450,29 +3389,121 @@ static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, backend->mux->chardev = g_strdup(chardev); } +static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + bool is_listen = qemu_opt_get_bool(opts, "server", false); + bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); + bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); + bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); + const char *path = qemu_opt_get(opts, "path"); + const char *host = qemu_opt_get(opts, "host"); + const char *port = qemu_opt_get(opts, "port"); + SocketAddress *addr; + + if (!path) { + if (!host) { + error_setg(errp, "chardev: socket: no host given"); + return; + } + if (!port) { + error_setg(errp, "chardev: socket: no port given"); + return; + } + } + + backend->socket = g_new0(ChardevSocket, 1); + + backend->socket->has_nodelay = true; + backend->socket->nodelay = do_nodelay; + backend->socket->has_server = true; + backend->socket->server = is_listen; + backend->socket->has_telnet = true; + backend->socket->telnet = is_telnet; + backend->socket->has_wait = true; + backend->socket->wait = is_waitconnect; + + addr = g_new0(SocketAddress, 1); + if (path) { + addr->kind = SOCKET_ADDRESS_KIND_UNIX; + addr->q_unix = g_new0(UnixSocketAddress, 1); + addr->q_unix->path = g_strdup(path); + } else { + addr->kind = SOCKET_ADDRESS_KIND_INET; + addr->inet = g_new0(InetSocketAddress, 1); + addr->inet->host = g_strdup(host); + addr->inet->port = g_strdup(port); + addr->inet->has_to = qemu_opt_get(opts, "to"); + addr->inet->to = qemu_opt_get_number(opts, "to", 0); + addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4"); + addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0); + addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6"); + addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0); + } + backend->socket->addr = addr; +} + +static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *host = qemu_opt_get(opts, "host"); + const char *port = qemu_opt_get(opts, "port"); + const char *localaddr = qemu_opt_get(opts, "localaddr"); + const char *localport = qemu_opt_get(opts, "localport"); + bool has_local = false; + SocketAddress *addr; + + if (host == NULL || strlen(host) == 0) { + host = "localhost"; + } + if (port == NULL || strlen(port) == 0) { + error_setg(errp, "chardev: udp: remote port not specified"); + return; + } + if (localport == NULL || strlen(localport) == 0) { + localport = "0"; + } else { + has_local = true; + } + if (localaddr == NULL || strlen(localaddr) == 0) { + localaddr = ""; + } else { + has_local = true; + } + + backend->udp = g_new0(ChardevUdp, 1); + + addr = g_new0(SocketAddress, 1); + addr->kind = SOCKET_ADDRESS_KIND_INET; + addr->inet = g_new0(InetSocketAddress, 1); + addr->inet->host = g_strdup(host); + addr->inet->port = g_strdup(port); + addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4"); + addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0); + addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6"); + addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0); + backend->udp->remote = addr; + + if (has_local) { + backend->udp->has_local = true; + addr = g_new0(SocketAddress, 1); + addr->kind = SOCKET_ADDRESS_KIND_INET; + addr->inet = g_new0(InetSocketAddress, 1); + addr->inet->host = g_strdup(localaddr); + addr->inet->port = g_strdup(localport); + backend->udp->local = addr; + } +} + typedef struct CharDriver { const char *name; - /* old, pre qapi */ - CharDriverState *(*open)(QemuOpts *opts); - /* new, qapi-based */ ChardevBackendKind kind; void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp); } CharDriver; static GSList *backends; -void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *)) -{ - CharDriver *s; - - s = g_malloc0(sizeof(*s)); - s->name = g_strdup(name); - s->open = open; - - backends = g_slist_append(backends, s); -} - -void register_char_driver_qapi(const char *name, ChardevBackendKind kind, +void register_char_driver(const char *name, ChardevBackendKind kind, void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp)) { CharDriver *s; @@ -3493,8 +3524,12 @@ CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, CharDriver *cd; CharDriverState *chr; GSList *i; + ChardevReturn *ret = NULL; + ChardevBackend *backend; + const char *id = qemu_opts_id(opts); + char *bid = NULL; - if (qemu_opts_id(opts) == NULL) { + if (id == NULL) { error_setg(errp, "chardev: no id specified"); goto err; } @@ -3517,89 +3552,49 @@ CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, goto err; } - if (!cd->open) { - /* using new, qapi init */ - ChardevBackend *backend = g_new0(ChardevBackend, 1); - ChardevReturn *ret = NULL; - const char *id = qemu_opts_id(opts); - char *bid = NULL; + backend = g_new0(ChardevBackend, 1); - if (qemu_opt_get_bool(opts, "mux", 0)) { - bid = g_strdup_printf("%s-base", id); - } + if (qemu_opt_get_bool(opts, "mux", 0)) { + bid = g_strdup_printf("%s-base", id); + } - chr = NULL; - backend->kind = cd->kind; - if (cd->parse) { - cd->parse(opts, backend, &local_err); - if (local_err) { - error_propagate(errp, local_err); - goto qapi_out; - } - } - ret = qmp_chardev_add(bid ? bid : id, backend, errp); - if (!ret) { + chr = NULL; + backend->kind = cd->kind; + if (cd->parse) { + cd->parse(opts, backend, &local_err); + if (local_err) { + error_propagate(errp, local_err); goto qapi_out; } - - if (bid) { - qapi_free_ChardevBackend(backend); - qapi_free_ChardevReturn(ret); - backend = g_new0(ChardevBackend, 1); - backend->mux = g_new0(ChardevMux, 1); - backend->kind = CHARDEV_BACKEND_KIND_MUX; - backend->mux->chardev = g_strdup(bid); - ret = qmp_chardev_add(id, backend, errp); - if (!ret) { - chr = qemu_chr_find(bid); - qemu_chr_delete(chr); - chr = NULL; - goto qapi_out; - } - } - - chr = qemu_chr_find(id); - chr->opts = opts; - - qapi_out: - qapi_free_ChardevBackend(backend); - qapi_free_ChardevReturn(ret); - g_free(bid); - return chr; } - - chr = cd->open(opts); - if (!chr) { - error_setg(errp, "chardev: opening backend \"%s\" failed", - qemu_opt_get(opts, "backend")); - goto err; + ret = qmp_chardev_add(bid ? bid : id, backend, errp); + if (!ret) { + goto qapi_out; } - if (!chr->filename) - chr->filename = g_strdup(qemu_opt_get(opts, "backend")); - chr->init = init; - /* if we didn't create the chardev via qmp_chardev_add, we - * need to send the OPENED event here - */ - if (!chr->explicit_be_open) { - qemu_chr_be_event(chr, CHR_EVENT_OPENED); + if (bid) { + qapi_free_ChardevBackend(backend); + qapi_free_ChardevReturn(ret); + backend = g_new0(ChardevBackend, 1); + backend->mux = g_new0(ChardevMux, 1); + backend->kind = CHARDEV_BACKEND_KIND_MUX; + backend->mux->chardev = g_strdup(bid); + ret = qmp_chardev_add(id, backend, errp); + if (!ret) { + chr = qemu_chr_find(bid); + qemu_chr_delete(chr); + chr = NULL; + goto qapi_out; + } } - QTAILQ_INSERT_TAIL(&chardevs, chr, next); - if (qemu_opt_get_bool(opts, "mux", 0)) { - CharDriverState *base = chr; - int len = strlen(qemu_opts_id(opts)) + 6; - base->label = g_malloc(len); - snprintf(base->label, len, "%s-base", qemu_opts_id(opts)); - chr = qemu_chr_open_mux(base); - chr->filename = base->filename; - chr->avail_connections = MAX_MUX; - QTAILQ_INSERT_TAIL(&chardevs, chr, next); - } else { - chr->avail_connections = 1; - } - chr->label = g_strdup(qemu_opts_id(opts)); + chr = qemu_chr_find(id); chr->opts = opts; + +qapi_out: + qapi_free_ChardevBackend(backend); + qapi_free_ChardevReturn(ret); + g_free(bid); return chr; err: @@ -4137,32 +4132,32 @@ void qmp_chardev_remove(const char *id, Error **errp) static void register_types(void) { - register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL); - register_char_driver("socket", qemu_chr_open_socket); - register_char_driver("udp", qemu_chr_open_udp); - register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, - qemu_chr_parse_ringbuf); - register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE, - qemu_chr_parse_file_out); - register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO, - qemu_chr_parse_stdio); - register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL, - qemu_chr_parse_serial); - register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL, - qemu_chr_parse_serial); - register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL, - qemu_chr_parse_parallel); - register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL, - qemu_chr_parse_parallel); - register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL); - register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL); - register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE, - qemu_chr_parse_pipe); - register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX, - qemu_chr_parse_mux); + register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL); + register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET, + qemu_chr_parse_socket); + register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp); + register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, + qemu_chr_parse_ringbuf); + register_char_driver("file", CHARDEV_BACKEND_KIND_FILE, + qemu_chr_parse_file_out); + register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO, + qemu_chr_parse_stdio); + register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL, + qemu_chr_parse_serial); + register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL, + qemu_chr_parse_serial); + register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL, + qemu_chr_parse_parallel); + register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL, + qemu_chr_parse_parallel); + register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL); + register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL); + register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE, + qemu_chr_parse_pipe); + register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux); /* Bug-compatibility: */ - register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY, - qemu_chr_parse_ringbuf); + register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY, + qemu_chr_parse_ringbuf); /* this must be done after machine init, since we register FEs with muxes * as part of realize functions like serial_isa_realizefn when -nographic * is specified |