diff options
Diffstat (limited to 'qemu-char.c')
| -rw-r--r-- | qemu-char.c | 395 |
1 files changed, 208 insertions, 187 deletions
diff --git a/qemu-char.c b/qemu-char.c index 653ea10..13371c4 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -383,7 +383,10 @@ static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) return len; } -static CharDriverState *qemu_chr_open_null(void) +static CharDriverState *qemu_chr_open_null(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { CharDriverState *chr; @@ -679,11 +682,20 @@ static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond) return d->drv->chr_add_watch(d->drv, cond); } -static CharDriverState *qemu_chr_open_mux(CharDriverState *drv) +static CharDriverState *qemu_chr_open_mux(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { - CharDriverState *chr; + ChardevMux *mux = backend->mux; + CharDriverState *chr, *drv; MuxDriver *d; + drv = qemu_chr_find(mux->chardev); + if (drv == NULL) { + error_setg(errp, "mux: base chardev %s not found", mux->chardev); + return NULL; + } + chr = qemu_chr_alloc(); d = g_new0(MuxDriver, 1); @@ -1078,18 +1090,17 @@ static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out) return chr; } -static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) +static CharDriverState *qemu_chr_open_pipe(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { + ChardevHostdev *opts = backend->pipe; int fd_in, fd_out; char filename_in[CHR_MAX_FILENAME_SIZE]; char filename_out[CHR_MAX_FILENAME_SIZE]; const char *filename = opts->device; - if (filename == NULL) { - fprintf(stderr, "chardev: pipe: no filename given\n"); - return NULL; - } - snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename); snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%s.out", filename); TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); @@ -1101,6 +1112,7 @@ static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) close(fd_out); TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); if (fd_in < 0) { + error_setg_file_open(errp, errno, filename); return NULL; } } @@ -1156,19 +1168,23 @@ static void qemu_chr_close_stdio(struct CharDriverState *chr) fd_chr_close(chr); } -static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) +static CharDriverState *qemu_chr_open_stdio(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { + ChardevStdio *opts = backend->stdio; CharDriverState *chr; struct sigaction act; if (is_daemonized()) { - error_report("cannot use stdio with -daemonize"); + error_setg(errp, "cannot use stdio with -daemonize"); return NULL; } if (stdio_in_use) { - error_report("cannot use stdio by multiple character devices"); - exit(1); + error_setg(errp, "cannot use stdio by multiple character devices"); + return NULL; } stdio_in_use = true; @@ -1196,7 +1212,8 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ || defined(__GLIBC__) -#define HAVE_CHARDEV_TTY 1 +#define HAVE_CHARDEV_SERIAL 1 +#define HAVE_CHARDEV_PTY 1 typedef struct { GIOChannel *fd; @@ -1389,7 +1406,9 @@ static void pty_chr_close(struct CharDriverState *chr) } static CharDriverState *qemu_chr_open_pty(const char *id, - ChardevReturn *ret) + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { CharDriverState *chr; PtyCharDriver *s; @@ -1398,6 +1417,7 @@ static CharDriverState *qemu_chr_open_pty(const char *id, master_fd = qemu_openpty_raw(&slave_fd, pty_name); if (master_fd < 0) { + error_setg_errno(errp, errno, "Failed to create PTY"); return NULL; } @@ -1752,12 +1772,13 @@ static void pp_close(CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static CharDriverState *qemu_chr_open_pp_fd(int fd) +static CharDriverState *qemu_chr_open_pp_fd(int fd, Error **errp) { CharDriverState *chr; ParallelCharDriver *drv; if (ioctl(fd, PPCLAIM) < 0) { + error_setg_errno(errp, errno, "not a parallel port"); close(fd); return NULL; } @@ -1817,7 +1838,7 @@ static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) return 0; } -static CharDriverState *qemu_chr_open_pp_fd(int fd) +static CharDriverState *qemu_chr_open_pp_fd(int fd, Error **errp) { CharDriverState *chr; @@ -1832,6 +1853,8 @@ static CharDriverState *qemu_chr_open_pp_fd(int fd) #else /* _WIN32 */ +#define HAVE_CHARDEV_SERIAL 1 + typedef struct { int max_size; HANDLE hcom, hrecv, hsend; @@ -1883,7 +1906,7 @@ static void win_chr_close(CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static int win_chr_init(CharDriverState *chr, const char *filename) +static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp) { WinCharState *s = chr->opaque; COMMCONFIG comcfg; @@ -1894,25 +1917,25 @@ static int win_chr_init(CharDriverState *chr, const char *filename) s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); if (!s->hsend) { - fprintf(stderr, "Failed CreateEvent\n"); + error_setg(errp, "Failed CreateEvent"); goto fail; } s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); if (!s->hrecv) { - fprintf(stderr, "Failed CreateEvent\n"); + error_setg(errp, "Failed CreateEvent"); goto fail; } s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); if (s->hcom == INVALID_HANDLE_VALUE) { - fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError()); + error_setg(errp, "Failed CreateFile (%lu)", GetLastError()); s->hcom = NULL; goto fail; } if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) { - fprintf(stderr, "Failed SetupComm\n"); + error_setg(errp, "Failed SetupComm"); goto fail; } @@ -1923,23 +1946,23 @@ static int win_chr_init(CharDriverState *chr, const char *filename) CommConfigDialog(filename, NULL, &comcfg); if (!SetCommState(s->hcom, &comcfg.dcb)) { - fprintf(stderr, "Failed SetCommState\n"); + error_setg(errp, "Failed SetCommState"); goto fail; } if (!SetCommMask(s->hcom, EV_ERR)) { - fprintf(stderr, "Failed SetCommMask\n"); + error_setg(errp, "Failed SetCommMask"); goto fail; } cto.ReadIntervalTimeout = MAXDWORD; if (!SetCommTimeouts(s->hcom, &cto)) { - fprintf(stderr, "Failed SetCommTimeouts\n"); + error_setg(errp, "Failed SetCommTimeouts"); goto fail; } if (!ClearCommError(s->hcom, &err, &comstat)) { - fprintf(stderr, "Failed ClearCommError\n"); + error_setg(errp, "Failed ClearCommError"); goto fail; } qemu_add_polling_cb(win_chr_poll, chr); @@ -2044,7 +2067,8 @@ static int win_chr_poll(void *opaque) return 0; } -static CharDriverState *qemu_chr_open_win_path(const char *filename) +static CharDriverState *qemu_chr_open_win_path(const char *filename, + Error **errp) { CharDriverState *chr; WinCharState *s; @@ -2055,7 +2079,7 @@ static CharDriverState *qemu_chr_open_win_path(const char *filename) chr->chr_write = win_chr_write; chr->chr_close = win_chr_close; - if (win_chr_init(chr, filename) < 0) { + if (win_chr_init(chr, filename, errp) < 0) { g_free(s); g_free(chr); return NULL; @@ -2079,7 +2103,8 @@ static int win_chr_pipe_poll(void *opaque) return 0; } -static int win_chr_pipe_init(CharDriverState *chr, const char *filename) +static int win_chr_pipe_init(CharDriverState *chr, const char *filename, + Error **errp) { WinCharState *s = chr->opaque; OVERLAPPED ov; @@ -2091,12 +2116,12 @@ static int win_chr_pipe_init(CharDriverState *chr, const char *filename) s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); if (!s->hsend) { - fprintf(stderr, "Failed CreateEvent\n"); + error_setg(errp, "Failed CreateEvent"); goto fail; } s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); if (!s->hrecv) { - fprintf(stderr, "Failed CreateEvent\n"); + error_setg(errp, "Failed CreateEvent"); goto fail; } @@ -2106,7 +2131,7 @@ static int win_chr_pipe_init(CharDriverState *chr, const char *filename) PIPE_WAIT, MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); if (s->hcom == INVALID_HANDLE_VALUE) { - fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError()); + error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError()); s->hcom = NULL; goto fail; } @@ -2115,13 +2140,13 @@ static int win_chr_pipe_init(CharDriverState *chr, const char *filename) ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); ret = ConnectNamedPipe(s->hcom, &ov); if (ret) { - fprintf(stderr, "Failed ConnectNamedPipe\n"); + error_setg(errp, "Failed ConnectNamedPipe"); goto fail; } ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); if (!ret) { - fprintf(stderr, "Failed GetOverlappedResult\n"); + error_setg(errp, "Failed GetOverlappedResult"); if (ov.hEvent) { CloseHandle(ov.hEvent); ov.hEvent = NULL; @@ -2142,8 +2167,12 @@ static int win_chr_pipe_init(CharDriverState *chr, const char *filename) } -static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) +static CharDriverState *qemu_chr_open_pipe(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { + ChardevHostdev *opts = backend->pipe; const char *filename = opts->device; CharDriverState *chr; WinCharState *s; @@ -2154,7 +2183,7 @@ static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) chr->chr_write = win_chr_write; chr->chr_close = win_chr_close; - if (win_chr_pipe_init(chr, filename) < 0) { + if (win_chr_pipe_init(chr, filename, errp) < 0) { g_free(s); g_free(chr); return NULL; @@ -2175,7 +2204,10 @@ static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out) return chr; } -static CharDriverState *qemu_chr_open_win_con(void) +static CharDriverState *qemu_chr_open_win_con(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE)); } @@ -2316,7 +2348,10 @@ static void win_stdio_close(CharDriverState *chr) g_free(chr); } -static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) +static CharDriverState *qemu_chr_open_stdio(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { CharDriverState *chr; WinStdioCharState *stdio; @@ -2328,8 +2363,8 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); if (stdio->hStdIn == INVALID_HANDLE_VALUE) { - fprintf(stderr, "cannot open stdio: invalid handle\n"); - exit(1); + error_setg(errp, "cannot open stdio: invalid handle"); + return NULL; } is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; @@ -2341,25 +2376,30 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) if (is_console) { if (qemu_add_wait_object(stdio->hStdIn, win_stdio_wait_func, chr)) { - fprintf(stderr, "qemu_add_wait_object: failed\n"); + error_setg(errp, "qemu_add_wait_object: failed"); + goto err1; } } else { DWORD dwId; stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); - stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, - chr, 0, &dwId); - - if (stdio->hInputThread == INVALID_HANDLE_VALUE - || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE + if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { - fprintf(stderr, "cannot create stdio thread or event\n"); - exit(1); + error_setg(errp, "cannot create event"); + goto err2; } if (qemu_add_wait_object(stdio->hInputReadyEvent, win_stdio_thread_wait_func, chr)) { - fprintf(stderr, "qemu_add_wait_object: failed\n"); + error_setg(errp, "qemu_add_wait_object: failed"); + goto err2; + } + stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, + chr, 0, &dwId); + + if (stdio->hInputThread == INVALID_HANDLE_VALUE) { + error_setg(errp, "cannot create stdio thread"); + goto err3; } } @@ -2377,6 +2417,15 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) qemu_chr_fe_set_echo(chr, false); return chr; + +err3: + qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); +err2: + CloseHandle(stdio->hInputReadyEvent); + CloseHandle(stdio->hInputDoneEvent); +err1: + qemu_del_wait_object(stdio->hStdIn, NULL, NULL); + return NULL; } #endif /* !_WIN32 */ @@ -3173,9 +3222,12 @@ static void ringbuf_chr_close(struct CharDriverState *chr) chr->opaque = NULL; } -static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts, +static CharDriverState *qemu_chr_open_ringbuf(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { + ChardevRingbuf *opts = backend->ringbuf; CharDriverState *chr; RingBufCharDriver *d; @@ -3462,6 +3514,7 @@ static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true); } +#ifdef HAVE_CHARDEV_SERIAL static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, Error **errp) { @@ -3474,7 +3527,9 @@ static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, backend->serial = g_new0(ChardevHostdev, 1); backend->serial->device = g_strdup(device); } +#endif +#ifdef HAVE_CHARDEV_PARPORT static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, Error **errp) { @@ -3487,6 +3542,7 @@ static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, backend->parallel = g_new0(ChardevHostdev, 1); backend->parallel->device = g_strdup(device); } +#endif static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, Error **errp) @@ -3641,12 +3697,16 @@ typedef struct CharDriver { const char *name; ChardevBackendKind kind; void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp); + CharDriverState *(*create)(const char *id, ChardevBackend *backend, + ChardevReturn *ret, Error **errp); } CharDriver; static GSList *backends; void register_char_driver(const char *name, ChardevBackendKind kind, - void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp)) + void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp), + CharDriverState *(*create)(const char *id, ChardevBackend *backend, + ChardevReturn *ret, Error **errp)) { CharDriver *s; @@ -3654,6 +3714,7 @@ void register_char_driver(const char *name, ChardevBackendKind kind, s->name = g_strdup(name); s->kind = kind; s->parse = parse; + s->create = create; backends = g_slist_append(backends, s); } @@ -4002,8 +4063,12 @@ QemuOptsList qemu_chardev_opts = { #ifdef _WIN32 -static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) +static CharDriverState *qmp_chardev_open_file(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { + ChardevFile *file = backend->file; HANDLE out; if (file->has_in) { @@ -4020,17 +4085,13 @@ static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) return qemu_chr_open_win_file(out); } -static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial, +static CharDriverState *qmp_chardev_open_serial(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { - return qemu_chr_open_win_path(serial->device); -} - -static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel, - Error **errp) -{ - error_setg(errp, "character device backend type 'parallel' not supported"); - return NULL; + ChardevHostdev *serial = backend->serial; + return qemu_chr_open_win_path(serial->device, errp); } #else /* WIN32 */ @@ -4047,8 +4108,12 @@ static int qmp_chardev_open_file_source(char *src, int flags, return fd; } -static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) +static CharDriverState *qmp_chardev_open_file(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, + Error **errp) { + ChardevFile *file = backend->file; int flags, in = -1, out; flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY; @@ -4069,10 +4134,13 @@ static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) return qemu_chr_open_fd(in, out); } -static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial, +#ifdef HAVE_CHARDEV_SERIAL +static CharDriverState *qmp_chardev_open_serial(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { -#ifdef HAVE_CHARDEV_TTY + ChardevHostdev *serial = backend->serial; int fd; fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); @@ -4081,28 +4149,25 @@ static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial, } qemu_set_nonblock(fd); return qemu_chr_open_tty_fd(fd); -#else - error_setg(errp, "character device backend type 'serial' not supported"); - return NULL; -#endif } +#endif -static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel, +#ifdef HAVE_CHARDEV_PARPORT +static CharDriverState *qmp_chardev_open_parallel(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { -#ifdef HAVE_CHARDEV_PARPORT + ChardevHostdev *parallel = backend->parallel; int fd; fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); if (fd < 0) { return NULL; } - return qemu_chr_open_pp_fd(fd); -#else - error_setg(errp, "character device backend type 'parallel' not supported"); - return NULL; -#endif + return qemu_chr_open_pp_fd(fd, errp); } +#endif #endif /* WIN32 */ @@ -4131,11 +4196,14 @@ static gboolean socket_reconnect_timeout(gpointer opaque) return false; } -static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock, +static CharDriverState *qmp_chardev_open_socket(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { CharDriverState *chr; TCPCharDriver *s; + ChardevSocket *sock = backend->socket; SocketAddress *addr = sock->addr; bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; bool is_listen = sock->has_server ? sock->server : true; @@ -4197,9 +4265,12 @@ static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock, return chr; } -static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp, +static CharDriverState *qmp_chardev_open_udp(const char *id, + ChardevBackend *backend, + ChardevReturn *ret, Error **errp) { + ChardevUdp *udp = backend->udp; int fd; fd = socket_dgram(udp->remote, udp->local, errp); @@ -4213,7 +4284,10 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, Error **errp) { ChardevReturn *ret = g_new0(ChardevReturn, 1); - CharDriverState *base, *chr = NULL; + CharDriverState *chr = NULL; + Error *local_err = NULL; + GSList *i; + CharDriver *cd; chr = qemu_chr_find(id); if (chr) { @@ -4222,106 +4296,40 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, return NULL; } - switch (backend->kind) { - case CHARDEV_BACKEND_KIND_FILE: - chr = qmp_chardev_open_file(backend->file, errp); - break; - case CHARDEV_BACKEND_KIND_SERIAL: - chr = qmp_chardev_open_serial(backend->serial, errp); - break; - 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_UDP: - chr = qmp_chardev_open_udp(backend->udp, errp); - break; -#ifdef HAVE_CHARDEV_TTY - case CHARDEV_BACKEND_KIND_PTY: - chr = qemu_chr_open_pty(id, ret); - break; -#endif - case CHARDEV_BACKEND_KIND_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); + for (i = backends; i; i = i->next) { + cd = i->data; + + if (cd->kind == backend->kind) { + chr = cd->create(id, backend, ret, &local_err); + if (local_err) { + error_propagate(errp, local_err); + goto out_error; + } 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_TESTDEV: - chr = chr_testdev_init(); - break; - 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_RINGBUF: - case CHARDEV_BACKEND_KIND_MEMORY: - chr = qemu_chr_open_ringbuf(backend->ringbuf, errp); - break; - default: - error_setg(errp, "unknown chardev backend (%d)", backend->kind); - break; } - /* - * Character backend open hasn't been fully converted to the Error - * API. Some opens fail without setting an error. Set a generic - * error then. - * TODO full conversion to Error API - */ - if (chr == NULL && errp && !*errp) { - error_setg(errp, "Failed to create chardev"); + if (chr == NULL) { + assert(!i); + error_setg(errp, "chardev backend not available"); + goto out_error; } - if (chr) { - chr->label = g_strdup(id); - chr->avail_connections = - (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1; - if (!chr->filename) { - chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]); - } - if (!chr->explicit_be_open) { - qemu_chr_be_event(chr, CHR_EVENT_OPENED); - } - QTAILQ_INSERT_TAIL(&chardevs, chr, next); - return ret; - } else { - g_free(ret); - return NULL; + + chr->label = g_strdup(id); + chr->avail_connections = + (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1; + if (!chr->filename) { + chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]); + } + if (!chr->explicit_be_open) { + qemu_chr_be_event(chr, CHR_EVENT_OPENED); } + QTAILQ_INSERT_TAIL(&chardevs, chr, next); + return ret; + +out_error: + g_free(ret); + return NULL; } void qmp_chardev_remove(const char *id, Error **errp) @@ -4343,32 +4351,45 @@ void qmp_chardev_remove(const char *id, Error **errp) static void register_types(void) { - register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL); + register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL, + qemu_chr_open_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); + qemu_chr_parse_socket, qmp_chardev_open_socket); + register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp, + qmp_chardev_open_udp); register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, - qemu_chr_parse_ringbuf); + qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); register_char_driver("file", CHARDEV_BACKEND_KIND_FILE, - qemu_chr_parse_file_out); + qemu_chr_parse_file_out, qmp_chardev_open_file); register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO, - qemu_chr_parse_stdio); + qemu_chr_parse_stdio, qemu_chr_open_stdio); +#if defined HAVE_CHARDEV_SERIAL register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL, - qemu_chr_parse_serial); + qemu_chr_parse_serial, qmp_chardev_open_serial); register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL, - qemu_chr_parse_serial); + qemu_chr_parse_serial, qmp_chardev_open_serial); +#endif +#ifdef HAVE_CHARDEV_PARPORT register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL, - qemu_chr_parse_parallel); + qemu_chr_parse_parallel, qmp_chardev_open_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); + qemu_chr_parse_parallel, qmp_chardev_open_parallel); +#endif +#ifdef HAVE_CHARDEV_PTY + register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL, + qemu_chr_open_pty); +#endif +#ifdef _WIN32 + register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL, + qemu_chr_open_win_con); +#endif register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE, - qemu_chr_parse_pipe); - register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux); + qemu_chr_parse_pipe, qemu_chr_open_pipe); + register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux, + qemu_chr_open_mux); /* Bug-compatibility: */ register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY, - qemu_chr_parse_ringbuf); + qemu_chr_parse_ringbuf, qemu_chr_open_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 |
