diff options
Diffstat (limited to 'qemu-char.c')
| -rw-r--r-- | qemu-char.c | 463 |
1 files changed, 361 insertions, 102 deletions
diff --git a/qemu-char.c b/qemu-char.c index 3be4970423..9ba0573c6a 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -856,6 +856,8 @@ static void cfmakeraw (struct termios *termios_p) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ || defined(__GLIBC__) +#define HAVE_CHARDEV_TTY 1 + typedef struct { int fd; int connected; @@ -1228,30 +1230,34 @@ static void qemu_chr_close_tty(CharDriverState *chr) } } -static CharDriverState *qemu_chr_open_tty(QemuOpts *opts) +static CharDriverState *qemu_chr_open_tty_fd(int fd) { - const char *filename = qemu_opt_get(opts, "path"); CharDriverState *chr; - int fd; - TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK)); - if (fd < 0) { - return NULL; - } tty_serial_init(fd, 115200, 'N', 8, 1); chr = qemu_chr_open_fd(fd, fd); chr->chr_ioctl = tty_serial_ioctl; chr->chr_close = qemu_chr_close_tty; return chr; } -#else /* ! __linux__ && ! __sun__ */ -static CharDriverState *qemu_chr_open_pty(QemuOpts *opts) + +static CharDriverState *qemu_chr_open_tty(QemuOpts *opts) { - return NULL; + 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__) + +#define HAVE_CHARDEV_PARPORT 1 + typedef struct { int fd; int mode; @@ -1361,17 +1367,10 @@ static void pp_close(CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static CharDriverState *qemu_chr_open_pp(QemuOpts *opts) +static CharDriverState *qemu_chr_open_pp_fd(int fd) { - const char *filename = qemu_opt_get(opts, "path"); CharDriverState *chr; ParallelCharDriver *drv; - int fd; - - TFR(fd = qemu_open(filename, O_RDWR)); - if (fd < 0) { - return NULL; - } if (ioctl(fd, PPCLAIM) < 0) { close(fd); @@ -1395,6 +1394,9 @@ static CharDriverState *qemu_chr_open_pp(QemuOpts *opts) #endif /* __linux__ */ #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) + +#define HAVE_CHARDEV_PARPORT 1 + static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) { int fd = (int)(intptr_t)chr->opaque; @@ -1432,16 +1434,9 @@ static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) return 0; } -static CharDriverState *qemu_chr_open_pp(QemuOpts *opts) +static CharDriverState *qemu_chr_open_pp_fd(int fd) { - const char *filename = qemu_opt_get(opts, "path"); CharDriverState *chr; - int fd; - - fd = qemu_open(filename, O_RDWR); - if (fd < 0) { - return NULL; - } chr = g_malloc0(sizeof(CharDriverState)); chr->opaque = (void *)(intptr_t)fd; @@ -1663,9 +1658,8 @@ static int win_chr_poll(void *opaque) return 0; } -static CharDriverState *qemu_chr_open_win(QemuOpts *opts) +static CharDriverState *qemu_chr_open_win_path(const char *filename) { - const char *filename = qemu_opt_get(opts, "path"); CharDriverState *chr; WinCharState *s; @@ -1684,6 +1678,11 @@ static CharDriverState *qemu_chr_open_win(QemuOpts *opts) 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; @@ -2439,10 +2438,88 @@ static void tcp_chr_close(CharDriverState *chr) qemu_chr_be_event(chr, CHR_EVENT_CLOSED); } -static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) +static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, + bool is_listen, bool is_telnet, + bool is_waitconnect, + Error **errp) { CharDriverState *chr = NULL; TCPCharDriver *s = NULL; + char host[NI_MAXHOST], serv[NI_MAXSERV]; + const char *left = "", *right = ""; + struct sockaddr_storage ss; + socklen_t ss_len = sizeof(ss); + + memset(&ss, 0, ss_len); + if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) { + error_setg(errp, "getsockname: %s", strerror(errno)); + return NULL; + } + + chr = g_malloc0(sizeof(CharDriverState)); + s = g_malloc0(sizeof(TCPCharDriver)); + + s->connected = 0; + s->fd = -1; + s->listen_fd = -1; + s->msgfd = -1; + + chr->filename = g_malloc(256); + switch (ss.ss_family) { +#ifndef _WIN32 + case AF_UNIX: + s->is_unix = 1; + snprintf(chr->filename, 256, "unix:%s%s", + ((struct sockaddr_un *)(&ss))->sun_path, + is_listen ? ",server" : ""); + break; +#endif + case AF_INET6: + left = "["; + right = "]"; + /* fall through */ + case AF_INET: + 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", + is_telnet ? "telnet" : "tcp", + left, host, right, serv, + is_listen ? ",server" : ""); + break; + } + + chr->opaque = s; + chr->chr_write = tcp_chr_write; + chr->chr_close = tcp_chr_close; + chr->get_msgfd = tcp_get_msgfd; + chr->chr_add_client = tcp_chr_add_client; + + if (is_listen) { + s->listen_fd = fd; + qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr); + if (is_telnet) { + s->do_telnetopt = 1; + } + } else { + s->connected = 1; + s->fd = fd; + socket_set_nodelay(fd); + tcp_chr_connect(chr); + } + + if (is_listen && is_waitconnect) { + printf("QEMU waiting for connection on: %s\n", + chr->filename); + tcp_chr_accept(chr); + socket_set_nonblock(s->listen_fd); + } + return chr; +} + +static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) +{ + CharDriverState *chr = NULL; Error *local_err = NULL; int fd = -1; int is_listen; @@ -2459,9 +2536,6 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) if (!is_listen) is_waitconnect = 0; - chr = g_malloc0(sizeof(CharDriverState)); - s = g_malloc0(sizeof(TCPCharDriver)); - if (is_unix) { if (is_listen) { fd = unix_listen_opts(opts, &local_err); @@ -2482,56 +2556,14 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) if (!is_waitconnect) socket_set_nonblock(fd); - s->connected = 0; - s->fd = -1; - s->listen_fd = -1; - s->msgfd = -1; - s->is_unix = is_unix; - s->do_nodelay = do_nodelay && !is_unix; - - chr->opaque = s; - chr->chr_write = tcp_chr_write; - chr->chr_close = tcp_chr_close; - chr->get_msgfd = tcp_get_msgfd; - chr->chr_add_client = tcp_chr_add_client; - - if (is_listen) { - s->listen_fd = fd; - qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr); - if (is_telnet) - s->do_telnetopt = 1; - - } else { - s->connected = 1; - s->fd = fd; - socket_set_nodelay(fd); - tcp_chr_connect(chr); - } - - /* for "info chardev" monitor command */ - chr->filename = g_malloc(256); - if (is_unix) { - snprintf(chr->filename, 256, "unix:%s%s", - qemu_opt_get(opts, "path"), - qemu_opt_get_bool(opts, "server", 0) ? ",server" : ""); - } else if (is_telnet) { - snprintf(chr->filename, 256, "telnet:%s:%s%s", - qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"), - qemu_opt_get_bool(opts, "server", 0) ? ",server" : ""); - } else { - snprintf(chr->filename, 256, "tcp:%s:%s%s", - qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"), - qemu_opt_get_bool(opts, "server", 0) ? ",server" : ""); - } - - if (is_listen && is_waitconnect) { - printf("QEMU waiting for connection on: %s\n", - chr->filename); - tcp_chr_accept(chr); - socket_set_nonblock(s->listen_fd); + chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet, + is_waitconnect, &local_err); + if (error_is_set(&local_err)) { + goto fail; } return chr; + fail: if (local_err) { qerror_report_err(local_err); @@ -2540,8 +2572,10 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) if (fd >= 0) { closesocket(fd); } - g_free(s); - g_free(chr); + if (chr) { + g_free(chr->opaque); + g_free(chr); + } return NULL; } @@ -2737,6 +2771,22 @@ fail: return NULL; } +#ifdef HAVE_CHARDEV_PARPORT + +static CharDriverState *qemu_chr_open_pp(QemuOpts *opts) +{ + const char *filename = qemu_opt_get(opts, "path"); + int fd; + + fd = qemu_open(filename, O_RDWR); + if (fd < 0) { + return NULL; + } + return qemu_chr_open_pp_fd(fd); +} + +#endif + static const struct { const char *name; CharDriverState *(*open)(QemuOpts *opts); @@ -2755,19 +2805,18 @@ static const struct { #else { .name = "file", .open = qemu_chr_open_file_out }, { .name = "pipe", .open = qemu_chr_open_pipe }, - { .name = "pty", .open = qemu_chr_open_pty }, { .name = "stdio", .open = qemu_chr_open_stdio }, #endif #ifdef CONFIG_BRLAPI { .name = "braille", .open = chr_baum_init }, #endif -#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ - || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ - || defined(__FreeBSD_kernel__) +#ifdef HAVE_CHARDEV_TTY { .name = "tty", .open = qemu_chr_open_tty }, + { .name = "serial", .open = qemu_chr_open_tty }, + { .name = "pty", .open = qemu_chr_open_pty }, #endif -#if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \ - || defined(__FreeBSD_kernel__) +#ifdef HAVE_CHARDEV_PARPORT + { .name = "parallel", .open = qemu_chr_open_pp }, { .name = "parport", .open = qemu_chr_open_pp }, #endif #ifdef CONFIG_SPICE @@ -2779,36 +2828,37 @@ static const struct { }; CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, - void (*init)(struct CharDriverState *s)) + void (*init)(struct CharDriverState *s), + Error **errp) { CharDriverState *chr; int i; if (qemu_opts_id(opts) == NULL) { - fprintf(stderr, "chardev: no id specified\n"); - return NULL; + error_setg(errp, "chardev: no id specified\n"); + goto err; } if (qemu_opt_get(opts, "backend") == NULL) { - fprintf(stderr, "chardev: \"%s\" missing backend\n", - qemu_opts_id(opts)); - return NULL; + error_setg(errp, "chardev: \"%s\" missing backend\n", + qemu_opts_id(opts)); + goto err; } for (i = 0; i < ARRAY_SIZE(backend_table); i++) { if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0) break; } if (i == ARRAY_SIZE(backend_table)) { - fprintf(stderr, "chardev: backend \"%s\" not found\n", - qemu_opt_get(opts, "backend")); - return NULL; + error_setg(errp, "chardev: backend \"%s\" not found\n", + qemu_opt_get(opts, "backend")); + goto err; } chr = backend_table[i].open(opts); if (!chr) { - fprintf(stderr, "chardev: opening backend \"%s\" failed\n", - qemu_opt_get(opts, "backend")); - return NULL; + error_setg(errp, "chardev: opening backend \"%s\" failed\n", + qemu_opt_get(opts, "backend")); + goto err; } if (!chr->filename) @@ -2829,7 +2879,12 @@ CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, chr->avail_connections = 1; } chr->label = g_strdup(qemu_opts_id(opts)); + chr->opts = opts; return chr; + +err: + qemu_opts_del(opts); + return NULL; } CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s)) @@ -2837,6 +2892,7 @@ CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*in const char *p; CharDriverState *chr; QemuOpts *opts; + Error *err = NULL; if (strstart(filename, "chardev:", &p)) { return qemu_chr_find(p); @@ -2846,11 +2902,14 @@ CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*in if (!opts) return NULL; - chr = qemu_chr_new_from_opts(opts, init); + chr = qemu_chr_new_from_opts(opts, init, &err); + if (error_is_set(&err)) { + fprintf(stderr, "%s\n", error_get_pretty(err)); + error_free(err); + } if (chr && qemu_opt_get_bool(opts, "mux", 0)) { monitor_init(chr, MONITOR_USE_READLINE); } - qemu_opts_del(opts); return chr; } @@ -2878,10 +2937,14 @@ void qemu_chr_fe_close(struct CharDriverState *chr) void qemu_chr_delete(CharDriverState *chr) { QTAILQ_REMOVE(&chardevs, chr, next); - if (chr->chr_close) + if (chr->chr_close) { chr->chr_close(chr); + } g_free(chr->filename); g_free(chr->label); + if (chr->opts) { + qemu_opts_del(chr->opts); + } g_free(chr); } @@ -2996,3 +3059,199 @@ QemuOptsList qemu_chardev_opts = { { /* end of list */ } }, }; + +#ifdef _WIN32 + +static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) +{ + HANDLE out; + + if (file->in) { + error_setg(errp, "input file not supported"); + return NULL; + } + + out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL, + OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); + if (out == INVALID_HANDLE_VALUE) { + error_setg(errp, "open %s failed", file->out); + return NULL; + } + return qemu_chr_open_win_file(out); +} + +static CharDriverState *qmp_chardev_open_port(ChardevPort *port, Error **errp) +{ + switch (port->type) { + case CHARDEV_PORT_KIND_SERIAL: + return qemu_chr_open_win_path(port->device); + default: + error_setg(errp, "unknown chardev port (%d)", port->type); + return NULL; + } +} + +#else /* WIN32 */ + +static int qmp_chardev_open_file_source(char *src, int flags, + Error **errp) +{ + int fd = -1; + + TFR(fd = qemu_open(src, flags, 0666)); + if (fd == -1) { + error_setg(errp, "open %s: %s", src, strerror(errno)); + } + return fd; +} + +static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) +{ + int flags, in = -1, out = -1; + + flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY; + out = qmp_chardev_open_file_source(file->out, flags, errp); + if (error_is_set(errp)) { + return NULL; + } + + if (file->in) { + flags = O_RDONLY; + in = qmp_chardev_open_file_source(file->in, flags, errp); + if (error_is_set(errp)) { + qemu_close(out); + return NULL; + } + } + + return qemu_chr_open_fd(in, out); +} + +static CharDriverState *qmp_chardev_open_port(ChardevPort *port, Error **errp) +{ + int flags, fd; + + switch (port->type) { +#ifdef HAVE_CHARDEV_TTY + case CHARDEV_PORT_KIND_SERIAL: + flags = O_RDWR; + fd = qmp_chardev_open_file_source(port->device, flags, errp); + if (error_is_set(errp)) { + return NULL; + } + socket_set_nonblock(fd); + return qemu_chr_open_tty_fd(fd); +#endif +#ifdef HAVE_CHARDEV_PARPORT + case CHARDEV_PORT_KIND_PARALLEL: + flags = O_RDWR; + fd = qmp_chardev_open_file_source(port->device, flags, errp); + if (error_is_set(errp)) { + return NULL; + } + return qemu_chr_open_pp_fd(fd); +#endif + default: + error_setg(errp, "unknown chardev port (%d)", port->type); + return NULL; + } +} + +#endif /* WIN32 */ + +static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock, + Error **errp) +{ + SocketAddress *addr = sock->addr; + bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; + bool is_listen = sock->has_server ? sock->server : true; + bool is_telnet = sock->has_telnet ? sock->telnet : false; + bool is_waitconnect = sock->has_wait ? sock->wait : false; + int fd; + + if (is_listen) { + fd = socket_listen(addr, errp); + } else { + fd = socket_connect(addr, errp, NULL, NULL); + } + if (error_is_set(errp)) { + return NULL; + } + return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, + is_telnet, is_waitconnect, errp); +} + +ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, + Error **errp) +{ + ChardevReturn *ret = g_new0(ChardevReturn, 1); + CharDriverState *chr = NULL; + + chr = qemu_chr_find(id); + if (chr) { + error_setg(errp, "Chardev '%s' already exists", id); + g_free(ret); + return NULL; + } + + switch (backend->kind) { + case CHARDEV_BACKEND_KIND_FILE: + chr = qmp_chardev_open_file(backend->file, errp); + break; + case CHARDEV_BACKEND_KIND_PORT: + chr = qmp_chardev_open_port(backend->port, errp); + break; + case CHARDEV_BACKEND_KIND_SOCKET: + chr = qmp_chardev_open_socket(backend->socket, 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); + break; + } +#endif + case CHARDEV_BACKEND_KIND_NULL: + chr = qemu_chr_open_null(NULL); + break; + default: + error_setg(errp, "unknown chardev backend (%d)", backend->kind); + break; + } + + if (chr == NULL && !error_is_set(errp)) { + error_setg(errp, "Failed to create chardev"); + } + if (chr) { + chr->label = g_strdup(id); + chr->avail_connections = 1; + QTAILQ_INSERT_TAIL(&chardevs, chr, next); + return ret; + } else { + g_free(ret); + return NULL; + } +} + +void qmp_chardev_remove(const char *id, Error **errp) +{ + CharDriverState *chr; + + chr = qemu_chr_find(id); + if (NULL == chr) { + error_setg(errp, "Chardev '%s' not found", id); + return; + } + if (chr->chr_can_read || chr->chr_read || + chr->chr_event || chr->handler_opaque) { + error_setg(errp, "Chardev '%s' is busy", id); + return; + } + qemu_chr_delete(chr); +} |