diff options
Diffstat (limited to 'qemu-char.c')
| -rw-r--r-- | qemu-char.c | 381 |
1 files changed, 247 insertions, 134 deletions
diff --git a/qemu-char.c b/qemu-char.c index 83787c74c4..e6337971a5 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -217,7 +217,7 @@ static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) return len; } -static CharDriverState *qemu_chr_open_null(QemuOpts *opts) +static CharDriverState *qemu_chr_open_null(void) { CharDriverState *chr; @@ -841,23 +841,11 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out) return chr; } -static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts) -{ - int fd_out; - - TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"), - O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666)); - if (fd_out < 0) { - return NULL; - } - return qemu_chr_open_fd(-1, fd_out); -} - -static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts) +static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) { int fd_in, fd_out; char filename_in[256], filename_out[256]; - const char *filename = qemu_opt_get(opts, "path"); + const char *filename = opts->device; if (filename == NULL) { fprintf(stderr, "chardev: pipe: no filename given\n"); @@ -920,7 +908,7 @@ static void qemu_chr_close_stdio(struct CharDriverState *chr) fd_chr_close(chr); } -static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts) +static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) { CharDriverState *chr; @@ -936,8 +924,10 @@ static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts) chr = qemu_chr_open_fd(0, 1); chr->chr_close = qemu_chr_close_stdio; chr->chr_set_echo = qemu_chr_set_echo_stdio; - stdio_allow_signal = qemu_opt_get_bool(opts, "signal", - display_type != DT_NOGRAPHIC); + stdio_allow_signal = display_type != DT_NOGRAPHIC; + if (opts->has_signal) { + stdio_allow_signal = opts->signal; + } qemu_chr_fe_set_echo(chr, false); return chr; @@ -1167,13 +1157,13 @@ static void pty_chr_close(struct CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static CharDriverState *qemu_chr_open_pty(QemuOpts *opts) +static CharDriverState *qemu_chr_open_pty(const char *id, + ChardevReturn *ret) { CharDriverState *chr; PtyCharDriver *s; struct termios tty; - const char *label; - int master_fd, slave_fd, len; + int master_fd, slave_fd; #if defined(__OpenBSD__) || defined(__DragonFly__) char pty_name[PATH_MAX]; #define q_ptsname(x) pty_name @@ -1194,17 +1184,12 @@ static CharDriverState *qemu_chr_open_pty(QemuOpts *opts) chr = g_malloc0(sizeof(CharDriverState)); - len = strlen(q_ptsname(master_fd)) + 5; - chr->filename = g_malloc(len); - snprintf(chr->filename, len, "pty:%s", q_ptsname(master_fd)); - qemu_opt_set(opts, "path", q_ptsname(master_fd)); + chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd)); + ret->pty = g_strdup(q_ptsname(master_fd)); + ret->has_pty = true; - label = qemu_opts_id(opts); - fprintf(stderr, "char device redirected to %s%s%s%s\n", - q_ptsname(master_fd), - label ? " (label " : "", - label ? label : "", - label ? ")" : ""); + fprintf(stderr, "char device redirected to %s (label %s)\n", + q_ptsname(master_fd), id); s = g_malloc0(sizeof(PtyCharDriver)); chr->opaque = s; @@ -1429,18 +1414,6 @@ static CharDriverState *qemu_chr_open_tty_fd(int fd) chr->chr_close = qemu_chr_close_tty; return chr; } - -static CharDriverState *qemu_chr_open_tty(QemuOpts *opts) -{ - const char *filename = qemu_opt_get(opts, "path"); - int fd; - - TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK)); - if (fd < 0) { - return NULL; - } - return qemu_chr_open_tty_fd(fd); -} #endif /* __linux__ || __sun__ */ #if defined(__linux__) @@ -1865,11 +1838,6 @@ static CharDriverState *qemu_chr_open_win_path(const char *filename) return chr; } -static CharDriverState *qemu_chr_open_win(QemuOpts *opts) -{ - return qemu_chr_open_win_path(qemu_opt_get(opts, "path")); -} - static int win_chr_pipe_poll(void *opaque) { CharDriverState *chr = opaque; @@ -1949,9 +1917,9 @@ static int win_chr_pipe_init(CharDriverState *chr, const char *filename) } -static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts) +static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) { - const char *filename = qemu_opt_get(opts, "path"); + const char *filename = opts->device; CharDriverState *chr; WinCharState *s; @@ -1984,25 +1952,11 @@ static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out) return chr; } -static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts) +static CharDriverState *qemu_chr_open_win_con(void) { return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE)); } -static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts) -{ - const char *file_out = qemu_opt_get(opts, "path"); - HANDLE fd_out; - - fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL, - OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); - if (fd_out == INVALID_HANDLE_VALUE) { - return NULL; - } - - return qemu_chr_open_win_file(fd_out); -} - static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) { HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); @@ -2140,7 +2094,7 @@ static void win_stdio_close(CharDriverState *chr) g_free(chr); } -static CharDriverState *qemu_chr_open_win_stdio(QemuOpts *opts) +static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) { CharDriverState *chr; WinStdioCharState *stdio; @@ -2307,21 +2261,14 @@ static void udp_chr_close(CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static CharDriverState *qemu_chr_open_udp(QemuOpts *opts) +static CharDriverState *qemu_chr_open_udp_fd(int fd) { CharDriverState *chr = NULL; NetCharDriver *s = NULL; - Error *local_err = NULL; - int fd = -1; chr = g_malloc0(sizeof(CharDriverState)); s = g_malloc0(sizeof(NetCharDriver)); - fd = inet_dgram_opts(opts, &local_err); - if (fd < 0) { - goto return_err; - } - s->fd = fd; s->chan = io_channel_from_socket(s->fd); s->bufcnt = 0; @@ -2331,18 +2278,18 @@ static CharDriverState *qemu_chr_open_udp(QemuOpts *opts) chr->chr_update_read_handler = udp_chr_update_read_handler; chr->chr_close = udp_chr_close; return chr; +} -return_err: - if (local_err) { - qerror_report_err(local_err); - error_free(local_err); - } - g_free(chr); - g_free(s); - if (fd >= 0) { - closesocket(fd); +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) { + return NULL; } - return NULL; + return qemu_chr_open_udp_fd(fd); } /***********************************************************/ @@ -2709,7 +2656,7 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, s->do_nodelay = do_nodelay; getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host), serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV); - snprintf(chr->filename, 256, "%s:%s:%s%s%s%s", + snprintf(chr->filename, 256, "%s:%s%s%s:%s%s", is_telnet ? "telnet" : "tcp", left, host, right, serv, is_listen ? ",server" : ""); @@ -2930,7 +2877,8 @@ static void ringbuf_chr_close(struct CharDriverState *chr) chr->opaque = NULL; } -static CharDriverState *qemu_chr_open_ringbuf(QemuOpts *opts) +static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts, + Error **errp) { CharDriverState *chr; RingBufCharDriver *d; @@ -2938,14 +2886,11 @@ static CharDriverState *qemu_chr_open_ringbuf(QemuOpts *opts) chr = g_malloc0(sizeof(CharDriverState)); d = g_malloc(sizeof(*d)); - d->size = qemu_opt_get_size(opts, "size", 0); - if (d->size == 0) { - d->size = 65536; - } + d->size = opts->has_size ? opts->size : 65536; /* The size must be power of 2 */ if (d->size & (d->size - 1)) { - error_report("size of ringbuf device must be power of two"); + error_setg(errp, "size of ringbuf chardev must be power of two"); goto fail; } @@ -3186,25 +3131,88 @@ fail: return NULL; } -#ifdef HAVE_CHARDEV_PARPORT +static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *path = qemu_opt_get(opts, "path"); -static CharDriverState *qemu_chr_open_pp(QemuOpts *opts) + if (path == NULL) { + error_setg(errp, "chardev: file: no filename given"); + return; + } + backend->file = g_new0(ChardevFile, 1); + backend->file->out = g_strdup(path); +} + +static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, + Error **errp) { - const char *filename = qemu_opt_get(opts, "path"); - int fd; + backend->stdio = g_new0(ChardevStdio, 1); + backend->stdio->has_signal = true; + backend->stdio->signal = + qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC); +} - fd = qemu_open(filename, O_RDWR); - if (fd < 0) { - return NULL; +static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *device = qemu_opt_get(opts, "path"); + + if (device == NULL) { + error_setg(errp, "chardev: serial/tty: no device path given"); + return; } - return qemu_chr_open_pp_fd(fd); + backend->serial = g_new0(ChardevHostdev, 1); + backend->serial->device = g_strdup(device); } -#endif +static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *device = qemu_opt_get(opts, "path"); + + if (device == NULL) { + error_setg(errp, "chardev: parallel: no device path given"); + return; + } + backend->parallel = g_new0(ChardevHostdev, 1); + backend->parallel->device = g_strdup(device); +} + +static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *device = qemu_opt_get(opts, "path"); + + if (device == NULL) { + error_setg(errp, "chardev: pipe: no device path given"); + return; + } + backend->pipe = g_new0(ChardevHostdev, 1); + backend->pipe->device = g_strdup(device); +} + +static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + int val; + + backend->memory = g_new0(ChardevRingbuf, 1); + + val = qemu_opt_get_number(opts, "size", 0); + if (val != 0) { + backend->memory->has_size = true; + backend->memory->size = val; + } +} typedef struct CharDriver { const char *name; + /* old, pre qapi */ CharDriverState *(*open)(QemuOpts *opts); + /* new, qapi-based */ + int kind; + void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp); } CharDriver; static GSList *backends; @@ -3220,6 +3228,19 @@ void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *) backends = g_slist_append(backends, s); } +void register_char_driver_qapi(const char *name, int kind, + void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp)) +{ + CharDriver *s; + + s = g_malloc0(sizeof(*s)); + s->name = g_strdup(name); + s->kind = kind; + s->parse = parse; + + backends = g_slist_append(backends, s); +} + CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, void (*init)(struct CharDriverState *s), Error **errp) @@ -3251,6 +3272,51 @@ CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, return NULL; } + if (!cd->open) { + /* using new, qapi init */ + ChardevBackend *backend = g_new0(ChardevBackend, 1); + ChardevReturn *ret = NULL; + const char *id = qemu_opts_id(opts); + const char *bid = NULL; + + 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, errp); + if (error_is_set(errp)) { + goto qapi_out; + } + } + ret = qmp_chardev_add(bid ? bid : id, backend, errp); + if (error_is_set(errp)) { + 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 (error_is_set(errp)) { + goto qapi_out; + } + } + + chr = qemu_chr_find(id); + + qapi_out: + qapi_free_ChardevBackend(backend); + qapi_free_ChardevReturn(ret); + return chr; + } + chr = cd->open(opts); if (!chr) { error_setg(errp, "chardev: opening backend \"%s\" failed", @@ -3606,11 +3672,23 @@ static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock, is_telnet, is_waitconnect, errp); } +static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram, + Error **errp) +{ + int fd; + + fd = socket_dgram(dgram->remote, dgram->local, errp); + if (error_is_set(errp)) { + return NULL; + } + return qemu_chr_open_udp_fd(fd); +} + ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, Error **errp) { ChardevReturn *ret = g_new0(ChardevReturn, 1); - CharDriverState *chr = NULL; + CharDriverState *base, *chr = NULL; chr = qemu_chr_find(id); if (chr) { @@ -3629,24 +3707,61 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, case CHARDEV_BACKEND_KIND_PARALLEL: chr = qmp_chardev_open_parallel(backend->parallel, errp); break; + case CHARDEV_BACKEND_KIND_PIPE: + chr = qemu_chr_open_pipe(backend->pipe); + break; case CHARDEV_BACKEND_KIND_SOCKET: chr = qmp_chardev_open_socket(backend->socket, errp); break; + case CHARDEV_BACKEND_KIND_DGRAM: + chr = qmp_chardev_open_dgram(backend->dgram, errp); + break; #ifdef HAVE_CHARDEV_TTY case CHARDEV_BACKEND_KIND_PTY: - { - /* qemu_chr_open_pty sets "path" in opts */ - QemuOpts *opts; - opts = qemu_opts_create_nofail(qemu_find_opts("chardev")); - chr = qemu_chr_open_pty(opts); - ret->pty = g_strdup(qemu_opt_get(opts, "path")); - ret->has_pty = true; - qemu_opts_del(opts); + chr = qemu_chr_open_pty(id, ret); break; - } #endif case CHARDEV_BACKEND_KIND_NULL: - chr = qemu_chr_open_null(NULL); + chr = qemu_chr_open_null(); + break; + case CHARDEV_BACKEND_KIND_MUX: + base = qemu_chr_find(backend->mux->chardev); + if (base == NULL) { + error_setg(errp, "mux: base chardev %s not found", + backend->mux->chardev); + break; + } + chr = qemu_chr_open_mux(base); + break; + case CHARDEV_BACKEND_KIND_MSMOUSE: + chr = qemu_chr_open_msmouse(); + break; +#ifdef CONFIG_BRLAPI + case CHARDEV_BACKEND_KIND_BRAILLE: + chr = chr_baum_init(); + break; +#endif + case CHARDEV_BACKEND_KIND_STDIO: + chr = qemu_chr_open_stdio(backend->stdio); + break; +#ifdef _WIN32 + case CHARDEV_BACKEND_KIND_CONSOLE: + chr = qemu_chr_open_win_con(); + break; +#endif +#ifdef CONFIG_SPICE + case CHARDEV_BACKEND_KIND_SPICEVMC: + chr = qemu_chr_open_spice_vmc(backend->spicevmc->type); + break; + case CHARDEV_BACKEND_KIND_SPICEPORT: + chr = qemu_chr_open_spice_port(backend->spiceport->fqdn); + break; +#endif + case CHARDEV_BACKEND_KIND_VC: + chr = vc_init(backend->vc); + break; + case CHARDEV_BACKEND_KIND_MEMORY: + chr = qemu_chr_open_ringbuf(backend->memory, errp); break; default: error_setg(errp, "unknown chardev backend (%d)", backend->kind); @@ -3658,7 +3773,8 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, } if (chr) { chr->label = g_strdup(id); - chr->avail_connections = 1; + chr->avail_connections = + (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1; QTAILQ_INSERT_TAIL(&chardevs, chr, next); return ret; } else { @@ -3686,30 +3802,27 @@ void qmp_chardev_remove(const char *id, Error **errp) static void register_types(void) { - register_char_driver("null", qemu_chr_open_null); + 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("memory", qemu_chr_open_ringbuf); -#ifdef _WIN32 - register_char_driver("file", qemu_chr_open_win_file_out); - register_char_driver("pipe", qemu_chr_open_win_pipe); - register_char_driver("console", qemu_chr_open_win_con); - register_char_driver("serial", qemu_chr_open_win); - register_char_driver("stdio", qemu_chr_open_win_stdio); -#else - register_char_driver("file", qemu_chr_open_file_out); - register_char_driver("pipe", qemu_chr_open_pipe); - register_char_driver("stdio", qemu_chr_open_stdio); -#endif -#ifdef HAVE_CHARDEV_TTY - register_char_driver("tty", qemu_chr_open_tty); - register_char_driver("serial", qemu_chr_open_tty); - register_char_driver("pty", qemu_chr_open_pty); -#endif -#ifdef HAVE_CHARDEV_PARPORT - register_char_driver("parallel", qemu_chr_open_pp); - register_char_driver("parport", qemu_chr_open_pp); -#endif + register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY, + 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); } type_init(register_types); |