*/
#include "qemu/osdep.h"
#include "qemu-common.h"
+#include "qemu/cutils.h"
#include "monitor/monitor.h"
#include "sysemu/sysemu.h"
#include "sysemu/block-backend.h"
#include "sysemu/char.h"
#include "hw/usb.h"
#include "qmp-commands.h"
-#include "qapi/qmp-input-visitor.h"
-#include "qapi/qmp-output-visitor.h"
+#include "qapi/clone-visitor.h"
#include "qapi-visit.h"
#include "qemu/base64.h"
#include "io/channel-socket.h"
#include "io/channel-file.h"
#include "io/channel-tls.h"
#include "sysemu/replay.h"
+#include "qemu/help_option.h"
#include <zlib.h>
#include <sys/times.h>
#include <sys/wait.h>
#include <termios.h>
-#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
}
while (done < len) {
- do {
- ret = write(s->logfd, buf + done, len - done);
- if (ret == -1 && errno == EAGAIN) {
- g_usleep(100);
- }
- } while (ret == -1 && errno == EAGAIN);
+ retry:
+ ret = write(s->logfd, buf + done, len - done);
+ if (ret == -1 && errno == EAGAIN) {
+ g_usleep(100);
+ goto retry;
+ }
if (ret <= 0) {
return;
qemu_mutex_lock(&s->chr_write_lock);
while (*offset < len) {
- do {
- res = s->chr_write(s, buf + *offset, len - *offset);
- if (res == -1 && errno == EAGAIN) {
- g_usleep(100);
- }
- } while (res == -1 && errno == EAGAIN);
+ retry:
+ res = s->chr_write(s, buf + *offset, len - *offset);
+ if (res < 0 && errno == EAGAIN) {
+ g_usleep(100);
+ goto retry;
+ }
if (res <= 0) {
break;
}
while (offset < len) {
- do {
- res = s->chr_sync_read(s, buf + offset, len - offset);
- if (res == -1 && errno == EAGAIN) {
- g_usleep(100);
- }
- } while (res == -1 && errno == EAGAIN);
+ retry:
+ res = s->chr_sync_read(s, buf + offset, len - offset);
+ if (res == -1 && errno == EAGAIN) {
+ g_usleep(100);
+ goto retry;
+ }
if (res == 0) {
break;
va_list ap;
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
- qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
+ /* XXX this blocks entire thread. Rewrite to use
+ * qemu_chr_fe_write and background I/O callbacks */
+ qemu_chr_fe_write_all(s, (uint8_t *)buf, strlen(buf));
va_end(ap);
}
(secs / 60) % 60,
secs % 60,
(int)(ti % 1000));
- qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
+ /* XXX this blocks entire thread. Rewrite to use
+ * qemu_chr_fe_write and background I/O callbacks */
+ qemu_chr_fe_write_all(d->drv, (uint8_t *)buf1, strlen(buf1));
d->linestart = 0;
}
ret += qemu_chr_fe_write(d->drv, buf+i, 1);
"\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
term_escape_char);
}
- qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
+ /* XXX this blocks entire thread. Rewrite to use
+ * qemu_chr_fe_write and background I/O callbacks */
+ qemu_chr_fe_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
for (i = 0; mux_help[i] != NULL; i++) {
for (j=0; mux_help[i][j] != '\0'; j++) {
if (mux_help[i][j] == '%')
- qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
+ qemu_chr_fe_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
else
- qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
+ qemu_chr_fe_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
}
}
}
case 'x':
{
const char *term = "QEMU: Terminated\n\r";
- qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
+ qemu_chr_fe_write_all(chr, (uint8_t *)term, strlen(term));
exit(0);
break;
}
return d->drv->chr_add_watch(d->drv, cond);
}
+static void mux_chr_close(struct CharDriverState *chr)
+{
+ MuxDriver *d = chr->opaque;
+
+ g_free(d);
+}
+
static CharDriverState *qemu_chr_open_mux(const char *id,
ChardevBackend *backend,
ChardevReturn *ret, Error **errp)
chr->opaque = d;
d->drv = drv;
d->focus = -1;
+ chr->chr_close = mux_chr_close;
chr->chr_write = mux_chr_write;
chr->chr_update_read_handler = mux_chr_update_read_handler;
chr->chr_accept_input = mux_chr_accept_input;
sigaction(SIGCONT, &act, NULL);
chr = qemu_chr_open_fd(0, 1, common, errp);
+ if (!chr) {
+ return NULL;
+ }
chr->chr_close = qemu_chr_close_stdio;
chr->chr_set_echo = qemu_chr_set_echo_stdio;
if (opts->has_signal) {
tty_serial_init(fd, 115200, 'N', 8, 1);
chr = qemu_chr_open_fd(fd, fd, backend, errp);
+ if (!chr) {
+ return NULL;
+ }
chr->chr_ioctl = tty_serial_ioctl;
chr->chr_close = qemu_chr_close_tty;
return chr;
{
TCPCharDriver *s = chr->opaque;
- if (!qio_channel_has_feature(s->ioc,
- QIO_CHANNEL_FEATURE_FD_PASS)) {
- return -1;
- }
/* clear old pending fd array */
g_free(s->write_msgfds);
s->write_msgfds = NULL;
+ s->write_msgfds_num = 0;
+
+ if (!s->connected ||
+ !qio_channel_has_feature(s->ioc,
+ QIO_CHANNEL_FEATURE_FD_PASS)) {
+ return -1;
+ }
if (num) {
s->write_msgfds = g_new(int, num);
NULL);
}
+ if (ret == QIO_CHANNEL_ERR_BLOCK) {
+ errno = EAGAIN;
+ ret = -1;
+ } else if (ret == -1) {
+ errno = EIO;
+ }
+
if (msgfds_num) {
/* close and clean read_msgfds */
for (i = 0; i < s->read_msgfds_num; i++) {
return qio_channel_create_watch(s->ioc, cond);
}
-static void tcp_chr_disconnect(CharDriverState *chr)
+static void tcp_chr_free_connection(CharDriverState *chr)
{
TCPCharDriver *s = chr->opaque;
+ int i;
if (!s->connected) {
return;
}
- s->connected = 0;
- if (s->listen_ioc) {
- s->listen_tag = qio_channel_add_watch(
- QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
+ if (s->read_msgfds_num) {
+ for (i = 0; i < s->read_msgfds_num; i++) {
+ close(s->read_msgfds[i]);
+ }
+ g_free(s->read_msgfds);
+ s->read_msgfds = NULL;
+ s->read_msgfds_num = 0;
}
+
tcp_set_msgfds(chr, NULL, 0);
remove_fd_in_watch(chr);
object_unref(OBJECT(s->sioc));
object_unref(OBJECT(s->ioc));
s->ioc = NULL;
g_free(chr->filename);
+ chr->filename = NULL;
+ s->connected = 0;
+}
+
+static void tcp_chr_disconnect(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ if (!s->connected) {
+ return;
+ }
+
+ tcp_chr_free_connection(chr);
+
+ if (s->listen_ioc) {
+ s->listen_tag = qio_channel_add_watch(
+ QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
+ }
chr->filename = SocketAddress_to_str("disconnected:", s->addr,
s->is_listen, s->is_telnet);
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
s->sioc = sioc;
object_ref(OBJECT(sioc));
+ qio_channel_set_blocking(s->ioc, false, NULL);
+
if (s->do_nodelay) {
qio_channel_set_delay(s->ioc, false);
}
if (!sioc) {
return -1;
}
- qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
ret = tcp_chr_new_client(chr, sioc);
object_unref(OBJECT(sioc));
return ret;
return TRUE;
}
+static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
+{
+ TCPCharDriver *s = chr->opaque;
+ QIOChannelSocket *sioc;
+
+ /* It can't wait on s->connected, since it is set asynchronously
+ * in TLS and telnet cases, only wait for an accepted socket */
+ while (!s->ioc) {
+ if (s->is_listen) {
+ fprintf(stderr, "QEMU waiting for connection on: %s\n",
+ chr->filename);
+ qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
+ tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
+ qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
+ } else {
+ sioc = qio_channel_socket_new();
+ if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
+ object_unref(OBJECT(sioc));
+ return -1;
+ }
+ tcp_chr_new_client(chr, sioc);
+ object_unref(OBJECT(sioc));
+ }
+ }
+
+ return 0;
+}
+
+int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
+{
+ if (chr->chr_wait_connected) {
+ return chr->chr_wait_connected(chr, errp);
+ }
+
+ return 0;
+}
+
static void tcp_chr_close(CharDriverState *chr)
{
TCPCharDriver *s = chr->opaque;
- int i;
+
+ tcp_chr_free_connection(chr);
if (s->reconnect_timer) {
g_source_remove(s->reconnect_timer);
s->reconnect_timer = 0;
}
qapi_free_SocketAddress(s->addr);
- remove_fd_in_watch(chr);
- if (s->ioc) {
- object_unref(OBJECT(s->ioc));
- }
if (s->listen_tag) {
g_source_remove(s->listen_tag);
s->listen_tag = 0;
if (s->listen_ioc) {
object_unref(OBJECT(s->listen_ioc));
}
- if (s->read_msgfds_num) {
- for (i = 0; i < s->read_msgfds_num; i++) {
- close(s->read_msgfds[i]);
- }
- g_free(s->read_msgfds);
- }
if (s->tls_creds) {
object_unref(OBJECT(s->tls_creds));
}
- if (s->write_msgfds_num) {
- g_free(s->write_msgfds);
- }
g_free(s);
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
const char *id = qemu_opts_id(opts);
char *bid = NULL;
- if (id == NULL) {
- error_setg(errp, "chardev: no id specified");
- goto err;
- }
-
if (qemu_opt_get(opts, "backend") == NULL) {
error_setg(errp, "chardev: \"%s\" missing backend",
qemu_opts_id(opts));
goto err;
}
+
+ if (is_help_option(qemu_opt_get(opts, "backend"))) {
+ fprintf(stderr, "Available chardev backend types:\n");
+ for (i = backends; i; i = i->next) {
+ cd = i->data;
+ fprintf(stderr, "%s\n", cd->name);
+ }
+ exit(!is_help_option(qemu_opt_get(opts, "backend")));
+ }
+
+ if (id == NULL) {
+ error_setg(errp, "chardev: no id specified");
+ goto err;
+ }
+
for (i = backends; i; i = i->next) {
cd = i->data;
}
}
-int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
- GIOFunc func, void *user_data)
+guint qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
+ GIOFunc func, void *user_data)
{
GSource *src;
guint tag;
if (s->chr_add_watch == NULL) {
- return -ENOSYS;
+ return 0;
}
src = s->chr_add_watch(s, cond);
if (!src) {
- return -EINVAL;
+ return 0;
}
g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
s->avail_connections++;
}
+void qemu_chr_disconnect(CharDriverState *chr)
+{
+ if (chr->chr_disconnect) {
+ chr->chr_disconnect(chr);
+ }
+}
+
static void qemu_chr_free_common(CharDriverState *chr)
{
g_free(chr->filename);
return NULL;
}
-/* Get a character (serial) device interface. */
-CharDriverState *qemu_char_get_next_serial(void)
-{
- static int next_serial;
- CharDriverState *chr;
-
- /* FIXME: This function needs to go away: use chardev properties! */
-
- while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
- chr = serial_hds[next_serial++];
- qemu_chr_fe_claim_no_fail(chr);
- return chr;
- }
- return NULL;
-}
-
QemuOptsList qemu_chardev_opts = {
.name = "chardev",
.implied_opt_name = "backend",
ChardevFile *file = backend->u.file.data;
ChardevCommon *common = qapi_ChardevFile_base(file);
HANDLE out;
+ DWORD accessmode;
+ DWORD flags;
if (file->has_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 (file->has_append && file->append) {
+ /* Append to file if it already exists. */
+ accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
+ flags = OPEN_ALWAYS;
+ } else {
+ /* Truncate file if it already exists. */
+ accessmode = GENERIC_WRITE;
+ flags = CREATE_ALWAYS;
+ }
+
+ out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
+ FILE_ATTRIBUTE_NORMAL, NULL);
if (out == INVALID_HANDLE_VALUE) {
error_setg(errp, "open %s failed", file->out);
return NULL;
}
}
- qapi_copy_SocketAddress(&s->addr, sock->addr);
+ s->addr = QAPI_CLONE(SocketAddress, sock->addr);
chr->opaque = s;
+ chr->chr_wait_connected = tcp_chr_wait_connected;
chr->chr_write = tcp_chr_write;
chr->chr_sync_read = tcp_chr_sync_read;
chr->chr_close = tcp_chr_close;
+ chr->chr_disconnect = tcp_chr_disconnect;
chr->get_msgfds = tcp_get_msgfds;
chr->set_msgfds = tcp_set_msgfds;
chr->chr_add_client = tcp_chr_add_client;
s->reconnect_time = reconnect;
}
- sioc = qio_channel_socket_new();
if (s->reconnect_time) {
+ sioc = qio_channel_socket_new();
qio_channel_socket_connect_async(sioc, s->addr,
qemu_chr_socket_connected,
chr, NULL);
- } else if (s->is_listen) {
- if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
- goto error;
- }
- s->listen_ioc = sioc;
- if (is_waitconnect) {
- fprintf(stderr, "QEMU waiting for connection on: %s\n",
- chr->filename);
- tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
- }
- qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
- if (!s->ioc) {
- s->listen_tag = qio_channel_add_watch(
- QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
- }
} else {
- if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
+ if (s->is_listen) {
+ sioc = qio_channel_socket_new();
+ if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
+ goto error;
+ }
+ s->listen_ioc = sioc;
+ if (is_waitconnect &&
+ qemu_chr_wait_connected(chr, errp) < 0) {
+ goto error;
+ }
+ if (!s->ioc) {
+ s->listen_tag = qio_channel_add_watch(
+ QIO_CHANNEL(s->listen_ioc), G_IO_IN,
+ tcp_chr_accept, chr, NULL);
+ }
+ } else if (qemu_chr_wait_connected(chr, errp) < 0) {
goto error;
}
- tcp_chr_new_client(chr, sioc);
- object_unref(OBJECT(sioc));
}
return chr;
qemu_chr_delete(chr);
}
+void qemu_chr_cleanup(void)
+{
+ CharDriverState *chr, *tmp;
+
+ QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
+ qemu_chr_delete(chr);
+ }
+}
+
static void register_types(void)
{
register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
projects / qemu.git / blobdiff