#include "ui/qemu-spice.h"
#define READ_BUF_LEN 4096
+#define CBUFF_SIZE 65536
/***********************************************************/
/* character device */
|| defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
|| defined(__GLIBC__)
+#define HAVE_CHARDEV_TTY 1
+
typedef struct {
int fd;
int connected;
}
}
-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;
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);
#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;
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;
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;
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;
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;
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);
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);
if (fd >= 0) {
closesocket(fd);
}
- g_free(s);
- g_free(chr);
+ if (chr) {
+ g_free(chr->opaque);
+ g_free(chr);
+ }
return NULL;
}
return d->outbuf_size;
}
+/*********************************************************/
+/*CircularMemory chardev*/
+
+typedef struct {
+ size_t size;
+ size_t prod;
+ size_t cons;
+ uint8_t *cbuf;
+} CirMemCharDriver;
+
+static bool cirmem_chr_is_empty(const CharDriverState *chr)
+{
+ const CirMemCharDriver *d = chr->opaque;
+
+ return d->cons == d->prod;
+}
+
+static size_t qemu_chr_cirmem_count(const CharDriverState *chr)
+{
+ const CirMemCharDriver *d = chr->opaque;
+
+ return (d->prod - d->cons);
+}
+
+static int cirmem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ CirMemCharDriver *d = chr->opaque;
+ int i;
+
+ if (!buf || (len < 0)) {
+ return -1;
+ }
+
+ for (i = 0; i < len; i++ ) {
+ /* Avoid writing the IAC information to the queue. */
+ if ((unsigned char)buf[i] == IAC) {
+ continue;
+ }
+
+ d->cbuf[d->prod++ % d->size] = buf[i];
+ if ((d->prod - d->cons) > d->size) {
+ d->cons = d->prod - d->size;
+ }
+ }
+
+ return 0;
+}
+
+static int cirmem_chr_read(CharDriverState *chr, uint8_t *buf, int len)
+{
+ CirMemCharDriver *d = chr->opaque;
+ int i;
+
+ for (i = 0; i < len && !cirmem_chr_is_empty(chr); i++) {
+ buf[i] = d->cbuf[d->cons++ % d->size];
+ }
+
+ return i;
+}
+
+static void cirmem_chr_close(struct CharDriverState *chr)
+{
+ CirMemCharDriver *d = chr->opaque;
+
+ g_free(d->cbuf);
+ g_free(d);
+ chr->opaque = NULL;
+}
+
+static CharDriverState *qemu_chr_open_cirmemchr(QemuOpts *opts)
+{
+ CharDriverState *chr;
+ CirMemCharDriver *d;
+
+ chr = g_malloc0(sizeof(CharDriverState));
+ d = g_malloc(sizeof(*d));
+
+ d->size = qemu_opt_get_number(opts, "maxcapacity", 0);
+ if (d->size == 0) {
+ d->size = CBUFF_SIZE;
+ }
+
+ /* The size must be power of 2 */
+ if (d->size & (d->size - 1)) {
+ fprintf(stderr, "chardev: size of memory device must be power of 2\n");
+ goto fail;
+ }
+
+ d->prod = 0;
+ d->cons = 0;
+ d->cbuf = g_malloc0(d->size);
+
+ chr->opaque = d;
+ chr->chr_write = cirmem_chr_write;
+ chr->chr_close = cirmem_chr_close;
+
+ return chr;
+
+fail:
+ g_free(d);
+ g_free(chr);
+ return NULL;
+}
+
+static bool qemu_is_chr(const CharDriverState *chr, const char *filename)
+{
+ return strcmp(chr->filename, filename);
+}
+
+void qmp_memchar_write(const char *device, int64_t size,
+ const char *data, bool has_format,
+ enum DataFormat format,
+ Error **errp)
+{
+ CharDriverState *chr;
+ guchar *write_data;
+ int ret;
+ gsize write_count;
+
+ chr = qemu_chr_find(device);
+ if (!chr) {
+ error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ return;
+ }
+
+ if (qemu_is_chr(chr, "memory")) {
+ error_setg(errp,"%s is not memory char device", device);
+ return;
+ }
+
+ write_count = (gsize)size;
+
+ if (has_format && (format == DATA_FORMAT_BASE64)) {
+ write_data = g_base64_decode(data, &write_count);
+ } else {
+ write_data = (uint8_t *)data;
+ }
+
+ ret = cirmem_chr_write(chr, write_data, write_count);
+
+ if (ret < 0) {
+ error_setg(errp, "Failed to write to device %s", device);
+ return;
+ }
+}
+
+MemCharRead *qmp_memchar_read(const char *device, int64_t size,
+ bool has_format, enum DataFormat format,
+ Error **errp)
+{
+ CharDriverState *chr;
+ guchar *read_data;
+ MemCharRead *meminfo;
+ size_t count;
+
+ chr = qemu_chr_find(device);
+ if (!chr) {
+ error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ return NULL;
+ }
+
+ if (qemu_is_chr(chr, "memory")) {
+ error_setg(errp,"%s is not memory char device", device);
+ return NULL;
+ }
+
+ if (size <= 0) {
+ error_setg(errp, "size must be greater than zero");
+ return NULL;
+ }
+
+ meminfo = g_malloc0(sizeof(MemCharRead));
+
+ count = qemu_chr_cirmem_count(chr);
+ if (count == 0) {
+ meminfo->data = g_strdup("");
+ return meminfo;
+ }
+
+ size = size > count ? count : size;
+ read_data = g_malloc0(size + 1);
+
+ meminfo->count = cirmem_chr_read(chr, read_data, size);
+
+ if (has_format && (format == DATA_FORMAT_BASE64)) {
+ meminfo->data = g_base64_encode(read_data, (size_t)meminfo->count);
+ } else {
+ meminfo->data = (char *)read_data;
+ }
+
+ return meminfo;
+}
+
QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
{
char host[65], port[33], width[8], height[8];
qemu_opt_set(opts, "path", filename);
return opts;
}
+ if (strstart(filename, "memory", &p)) {
+ qemu_opt_set(opts, "backend", "memory");
+ qemu_opt_set(opts, "maxcapacity", p);
+ return opts;
+ }
if (strstart(filename, "file:", &p)) {
qemu_opt_set(opts, "backend", "file");
qemu_opt_set(opts, "path", p);
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);
{ .name = "udp", .open = qemu_chr_open_udp },
{ .name = "msmouse", .open = qemu_chr_open_msmouse },
{ .name = "vc", .open = text_console_init },
+ { .name = "memory", .open = qemu_chr_open_cirmemchr },
#ifdef _WIN32
{ .name = "file", .open = qemu_chr_open_win_file_out },
{ .name = "pipe", .open = qemu_chr_open_win_pipe },
#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
};
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)
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))
const char *p;
CharDriverState *chr;
QemuOpts *opts;
+ Error *err = NULL;
if (strstart(filename, "chardev:", &p)) {
return qemu_chr_find(p);
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;
}
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);
}
},{
.name = "debug",
.type = QEMU_OPT_NUMBER,
+ },{
+ .name = "maxcapacity",
+ .type = QEMU_OPT_NUMBER,
},
{ /* 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)
+{
+ switch (port->type) {
+#ifdef HAVE_CHARDEV_TTY
+ case CHARDEV_PORT_KIND_SERIAL:
+ {
+ int flags, fd;
+ 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:
+ {
+ int flags, fd;
+ 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);
+}
projects / qemu.git / blobdiff