4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "qemu-common.h"
25 #include "monitor/monitor.h"
26 #include "ui/console.h"
27 #include "sysemu/sysemu.h"
28 #include "qemu/timer.h"
29 #include "sysemu/char.h"
31 #include "qmp-commands.h"
41 #include <sys/times.h>
45 #include <sys/ioctl.h>
46 #include <sys/resource.h>
47 #include <sys/socket.h>
48 #include <netinet/in.h>
50 #include <arpa/inet.h>
53 #include <sys/select.h>
56 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
57 #include <dev/ppbus/ppi.h>
58 #include <dev/ppbus/ppbconf.h>
59 #elif defined(__DragonFly__)
60 #include <dev/misc/ppi/ppi.h>
61 #include <bus/ppbus/ppbconf.h>
65 #include <linux/ppdev.h>
66 #include <linux/parport.h>
70 #include <sys/ethernet.h>
71 #include <sys/sockio.h>
72 #include <netinet/arp.h>
73 #include <netinet/in.h>
74 #include <netinet/in_systm.h>
75 #include <netinet/ip.h>
76 #include <netinet/ip_icmp.h> // must come after ip.h
77 #include <netinet/udp.h>
78 #include <netinet/tcp.h>
83 #include "qemu/sockets.h"
84 #include "ui/qemu-spice.h"
86 #define READ_BUF_LEN 4096
88 /***********************************************************/
89 /* character device */
91 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
92 QTAILQ_HEAD_INITIALIZER(chardevs);
94 void qemu_chr_be_event(CharDriverState *s, int event)
96 /* Keep track if the char device is open */
98 case CHR_EVENT_OPENED:
101 case CHR_EVENT_CLOSED:
108 s->chr_event(s->handler_opaque, event);
111 void qemu_chr_be_generic_open(CharDriverState *s)
113 qemu_chr_be_event(s, CHR_EVENT_OPENED);
116 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
118 return s->chr_write(s, buf, len);
121 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
126 while (offset < len) {
128 res = s->chr_write(s, buf + offset, len - offset);
129 if (res == -1 && errno == EAGAIN) {
132 } while (res == -1 && errno == EAGAIN);
148 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
152 return s->chr_ioctl(s, cmd, arg);
155 int qemu_chr_be_can_write(CharDriverState *s)
157 if (!s->chr_can_read)
159 return s->chr_can_read(s->handler_opaque);
162 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
165 s->chr_read(s->handler_opaque, buf, len);
169 int qemu_chr_fe_get_msgfd(CharDriverState *s)
171 return s->get_msgfd ? s->get_msgfd(s) : -1;
174 int qemu_chr_add_client(CharDriverState *s, int fd)
176 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
179 void qemu_chr_accept_input(CharDriverState *s)
181 if (s->chr_accept_input)
182 s->chr_accept_input(s);
186 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
188 char buf[READ_BUF_LEN];
191 vsnprintf(buf, sizeof(buf), fmt, ap);
192 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
196 static void remove_fd_in_watch(CharDriverState *chr);
198 void qemu_chr_add_handlers(CharDriverState *s,
199 IOCanReadHandler *fd_can_read,
200 IOReadHandler *fd_read,
201 IOEventHandler *fd_event,
206 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
208 remove_fd_in_watch(s);
212 s->chr_can_read = fd_can_read;
213 s->chr_read = fd_read;
214 s->chr_event = fd_event;
215 s->handler_opaque = opaque;
216 if (s->chr_update_read_handler)
217 s->chr_update_read_handler(s);
219 if (!s->explicit_fe_open) {
220 qemu_chr_fe_set_open(s, fe_open);
223 /* We're connecting to an already opened device, so let's make sure we
224 also get the open event */
225 if (fe_open && s->be_open) {
226 qemu_chr_be_generic_open(s);
230 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
235 static CharDriverState *qemu_chr_open_null(void)
237 CharDriverState *chr;
239 chr = g_malloc0(sizeof(CharDriverState));
240 chr->chr_write = null_chr_write;
241 chr->explicit_be_open = true;
245 /* MUX driver for serial I/O splitting */
247 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
248 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
250 IOCanReadHandler *chr_can_read[MAX_MUX];
251 IOReadHandler *chr_read[MAX_MUX];
252 IOEventHandler *chr_event[MAX_MUX];
253 void *ext_opaque[MAX_MUX];
254 CharDriverState *drv;
259 /* Intermediate input buffer allows to catch escape sequences even if the
260 currently active device is not accepting any input - but only until it
262 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
267 int64_t timestamps_start;
271 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
273 MuxDriver *d = chr->opaque;
275 if (!d->timestamps) {
276 ret = d->drv->chr_write(d->drv, buf, len);
281 for (i = 0; i < len; i++) {
287 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
288 if (d->timestamps_start == -1)
289 d->timestamps_start = ti;
290 ti -= d->timestamps_start;
292 snprintf(buf1, sizeof(buf1),
293 "[%02d:%02d:%02d.%03d] ",
298 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
301 ret += d->drv->chr_write(d->drv, buf+i, 1);
302 if (buf[i] == '\n') {
310 static const char * const mux_help[] = {
311 "% h print this help\n\r",
312 "% x exit emulator\n\r",
313 "% s save disk data back to file (if -snapshot)\n\r",
314 "% t toggle console timestamps\n\r"
315 "% b send break (magic sysrq)\n\r",
316 "% c switch between console and monitor\n\r",
321 int term_escape_char = 0x01; /* ctrl-a is used for escape */
322 static void mux_print_help(CharDriverState *chr)
325 char ebuf[15] = "Escape-Char";
326 char cbuf[50] = "\n\r";
328 if (term_escape_char > 0 && term_escape_char < 26) {
329 snprintf(cbuf, sizeof(cbuf), "\n\r");
330 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
332 snprintf(cbuf, sizeof(cbuf),
333 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
336 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
337 for (i = 0; mux_help[i] != NULL; i++) {
338 for (j=0; mux_help[i][j] != '\0'; j++) {
339 if (mux_help[i][j] == '%')
340 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
342 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
347 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
349 if (d->chr_event[mux_nr])
350 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
353 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
355 if (d->term_got_escape) {
356 d->term_got_escape = 0;
357 if (ch == term_escape_char)
366 const char *term = "QEMU: Terminated\n\r";
367 chr->chr_write(chr,(uint8_t *)term,strlen(term));
375 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
378 /* Switch to the next registered device */
379 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
381 if (d->focus >= d->mux_cnt)
383 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
386 d->timestamps = !d->timestamps;
387 d->timestamps_start = -1;
391 } else if (ch == term_escape_char) {
392 d->term_got_escape = 1;
400 static void mux_chr_accept_input(CharDriverState *chr)
402 MuxDriver *d = chr->opaque;
405 while (d->prod[m] != d->cons[m] &&
406 d->chr_can_read[m] &&
407 d->chr_can_read[m](d->ext_opaque[m])) {
408 d->chr_read[m](d->ext_opaque[m],
409 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
413 static int mux_chr_can_read(void *opaque)
415 CharDriverState *chr = opaque;
416 MuxDriver *d = chr->opaque;
419 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
421 if (d->chr_can_read[m])
422 return d->chr_can_read[m](d->ext_opaque[m]);
426 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
428 CharDriverState *chr = opaque;
429 MuxDriver *d = chr->opaque;
433 mux_chr_accept_input (opaque);
435 for(i = 0; i < size; i++)
436 if (mux_proc_byte(chr, d, buf[i])) {
437 if (d->prod[m] == d->cons[m] &&
438 d->chr_can_read[m] &&
439 d->chr_can_read[m](d->ext_opaque[m]))
440 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
442 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
446 static void mux_chr_event(void *opaque, int event)
448 CharDriverState *chr = opaque;
449 MuxDriver *d = chr->opaque;
452 /* Send the event to all registered listeners */
453 for (i = 0; i < d->mux_cnt; i++)
454 mux_chr_send_event(d, i, event);
457 static void mux_chr_update_read_handler(CharDriverState *chr)
459 MuxDriver *d = chr->opaque;
461 if (d->mux_cnt >= MAX_MUX) {
462 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
465 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
466 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
467 d->chr_read[d->mux_cnt] = chr->chr_read;
468 d->chr_event[d->mux_cnt] = chr->chr_event;
469 /* Fix up the real driver with mux routines */
470 if (d->mux_cnt == 0) {
471 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
474 if (d->focus != -1) {
475 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
477 d->focus = d->mux_cnt;
479 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
482 static bool muxes_realized;
485 * Called after processing of default and command-line-specified
486 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
487 * to a mux chardev. This is done here to ensure that
488 * output/prompts/banners are only displayed for the FE that has
489 * focus when initial command-line processing/machine init is
492 * After this point, any new FE attached to any new or existing
493 * mux will receive CHR_EVENT_OPENED notifications for the BE
496 static void muxes_realize_done(Notifier *notifier, void *unused)
498 CharDriverState *chr;
500 QTAILQ_FOREACH(chr, &chardevs, next) {
502 MuxDriver *d = chr->opaque;
505 /* send OPENED to all already-attached FEs */
506 for (i = 0; i < d->mux_cnt; i++) {
507 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
509 /* mark mux as OPENED so any new FEs will immediately receive
512 qemu_chr_be_generic_open(chr);
515 muxes_realized = true;
518 static Notifier muxes_realize_notify = {
519 .notify = muxes_realize_done,
522 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
524 CharDriverState *chr;
527 chr = g_malloc0(sizeof(CharDriverState));
528 d = g_malloc0(sizeof(MuxDriver));
533 chr->chr_write = mux_chr_write;
534 chr->chr_update_read_handler = mux_chr_update_read_handler;
535 chr->chr_accept_input = mux_chr_accept_input;
536 /* Frontend guest-open / -close notification is not support with muxes */
537 chr->chr_set_fe_open = NULL;
538 /* only default to opened state if we've realized the initial
541 chr->explicit_be_open = muxes_realized ? 0 : 1;
549 int send_all(int fd, const void *buf, int len1)
555 ret = send(fd, buf, len, 0);
557 errno = WSAGetLastError();
558 if (errno != WSAEWOULDBLOCK) {
561 } else if (ret == 0) {
573 int send_all(int fd, const void *_buf, int len1)
576 const uint8_t *buf = _buf;
580 ret = write(fd, buf, len);
582 if (errno != EINTR && errno != EAGAIN)
584 } else if (ret == 0) {
594 int recv_all(int fd, void *_buf, int len1, bool single_read)
600 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
602 if (errno != EINTR && errno != EAGAIN) {
619 typedef struct IOWatchPoll
626 IOCanReadHandler *fd_can_read;
631 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
633 return container_of(source, IOWatchPoll, parent);
636 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
638 IOWatchPoll *iwp = io_watch_poll_from_source(source);
639 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
640 bool was_active = iwp->src != NULL;
641 if (was_active == now_active) {
646 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
647 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
648 g_source_attach(iwp->src, NULL);
650 g_source_destroy(iwp->src);
651 g_source_unref(iwp->src);
657 static gboolean io_watch_poll_check(GSource *source)
662 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
668 static void io_watch_poll_finalize(GSource *source)
670 /* Due to a glib bug, removing the last reference to a source
671 * inside a finalize callback causes recursive locking (and a
672 * deadlock). This is not a problem inside other callbacks,
673 * including dispatch callbacks, so we call io_remove_watch_poll
674 * to remove this source. At this point, iwp->src must
675 * be NULL, or we would leak it.
677 * This would be solved much more elegantly by child sources,
678 * but we support older glib versions that do not have them.
680 IOWatchPoll *iwp = io_watch_poll_from_source(source);
681 assert(iwp->src == NULL);
684 static GSourceFuncs io_watch_poll_funcs = {
685 .prepare = io_watch_poll_prepare,
686 .check = io_watch_poll_check,
687 .dispatch = io_watch_poll_dispatch,
688 .finalize = io_watch_poll_finalize,
691 /* Can only be used for read */
692 static guint io_add_watch_poll(GIOChannel *channel,
693 IOCanReadHandler *fd_can_read,
700 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
701 iwp->fd_can_read = fd_can_read;
702 iwp->opaque = user_data;
703 iwp->channel = channel;
704 iwp->fd_read = (GSourceFunc) fd_read;
707 tag = g_source_attach(&iwp->parent, NULL);
708 g_source_unref(&iwp->parent);
712 static void io_remove_watch_poll(guint tag)
717 g_return_if_fail (tag > 0);
719 source = g_main_context_find_source_by_id(NULL, tag);
720 g_return_if_fail (source != NULL);
722 iwp = io_watch_poll_from_source(source);
724 g_source_destroy(iwp->src);
725 g_source_unref(iwp->src);
728 g_source_destroy(&iwp->parent);
731 static void remove_fd_in_watch(CharDriverState *chr)
733 if (chr->fd_in_tag) {
734 io_remove_watch_poll(chr->fd_in_tag);
740 static GIOChannel *io_channel_from_fd(int fd)
748 chan = g_io_channel_unix_new(fd);
750 g_io_channel_set_encoding(chan, NULL, NULL);
751 g_io_channel_set_buffered(chan, FALSE);
757 static GIOChannel *io_channel_from_socket(int fd)
766 chan = g_io_channel_win32_new_socket(fd);
768 chan = g_io_channel_unix_new(fd);
771 g_io_channel_set_encoding(chan, NULL, NULL);
772 g_io_channel_set_buffered(chan, FALSE);
777 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
780 GIOStatus status = G_IO_STATUS_NORMAL;
782 while (offset < len && status == G_IO_STATUS_NORMAL) {
783 gsize bytes_written = 0;
785 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
786 &bytes_written, NULL);
787 offset += bytes_written;
794 case G_IO_STATUS_NORMAL:
797 case G_IO_STATUS_AGAIN:
809 typedef struct FDCharDriver {
810 CharDriverState *chr;
811 GIOChannel *fd_in, *fd_out;
813 QTAILQ_ENTRY(FDCharDriver) node;
816 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
818 FDCharDriver *s = chr->opaque;
820 return io_channel_send(s->fd_out, buf, len);
823 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
825 CharDriverState *chr = opaque;
826 FDCharDriver *s = chr->opaque;
828 uint8_t buf[READ_BUF_LEN];
833 if (len > s->max_size) {
840 status = g_io_channel_read_chars(chan, (gchar *)buf,
841 len, &bytes_read, NULL);
842 if (status == G_IO_STATUS_EOF) {
843 remove_fd_in_watch(chr);
844 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
847 if (status == G_IO_STATUS_NORMAL) {
848 qemu_chr_be_write(chr, buf, bytes_read);
854 static int fd_chr_read_poll(void *opaque)
856 CharDriverState *chr = opaque;
857 FDCharDriver *s = chr->opaque;
859 s->max_size = qemu_chr_be_can_write(chr);
863 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
865 FDCharDriver *s = chr->opaque;
866 return g_io_create_watch(s->fd_out, cond);
869 static void fd_chr_update_read_handler(CharDriverState *chr)
871 FDCharDriver *s = chr->opaque;
873 remove_fd_in_watch(chr);
875 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
880 static void fd_chr_close(struct CharDriverState *chr)
882 FDCharDriver *s = chr->opaque;
884 remove_fd_in_watch(chr);
886 g_io_channel_unref(s->fd_in);
889 g_io_channel_unref(s->fd_out);
893 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
896 /* open a character device to a unix fd */
897 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
899 CharDriverState *chr;
902 chr = g_malloc0(sizeof(CharDriverState));
903 s = g_malloc0(sizeof(FDCharDriver));
904 s->fd_in = io_channel_from_fd(fd_in);
905 s->fd_out = io_channel_from_fd(fd_out);
906 fcntl(fd_out, F_SETFL, O_NONBLOCK);
909 chr->chr_add_watch = fd_chr_add_watch;
910 chr->chr_write = fd_chr_write;
911 chr->chr_update_read_handler = fd_chr_update_read_handler;
912 chr->chr_close = fd_chr_close;
917 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
920 char filename_in[256], filename_out[256];
921 const char *filename = opts->device;
923 if (filename == NULL) {
924 fprintf(stderr, "chardev: pipe: no filename given\n");
928 snprintf(filename_in, 256, "%s.in", filename);
929 snprintf(filename_out, 256, "%s.out", filename);
930 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
931 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
932 if (fd_in < 0 || fd_out < 0) {
937 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
942 return qemu_chr_open_fd(fd_in, fd_out);
945 /* init terminal so that we can grab keys */
946 static struct termios oldtty;
947 static int old_fd0_flags;
948 static bool stdio_allow_signal;
950 static void term_exit(void)
952 tcsetattr (0, TCSANOW, &oldtty);
953 fcntl(0, F_SETFL, old_fd0_flags);
956 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
962 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
963 |INLCR|IGNCR|ICRNL|IXON);
964 tty.c_oflag |= OPOST;
965 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
966 tty.c_cflag &= ~(CSIZE|PARENB);
971 if (!stdio_allow_signal)
972 tty.c_lflag &= ~ISIG;
974 tcsetattr (0, TCSANOW, &tty);
977 static void qemu_chr_close_stdio(struct CharDriverState *chr)
983 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
985 CharDriverState *chr;
987 if (is_daemonized()) {
988 error_report("cannot use stdio with -daemonize");
991 old_fd0_flags = fcntl(0, F_GETFL);
992 tcgetattr (0, &oldtty);
993 fcntl(0, F_SETFL, O_NONBLOCK);
996 chr = qemu_chr_open_fd(0, 1);
997 chr->chr_close = qemu_chr_close_stdio;
998 chr->chr_set_echo = qemu_chr_set_echo_stdio;
999 if (opts->has_signal) {
1000 stdio_allow_signal = opts->signal;
1002 qemu_chr_fe_set_echo(chr, false);
1007 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1008 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1009 || defined(__GLIBC__)
1011 #define HAVE_CHARDEV_TTY 1
1020 static void pty_chr_update_read_handler(CharDriverState *chr);
1021 static void pty_chr_state(CharDriverState *chr, int connected);
1023 static gboolean pty_chr_timer(gpointer opaque)
1025 struct CharDriverState *chr = opaque;
1026 PtyCharDriver *s = chr->opaque;
1029 if (!s->connected) {
1031 pty_chr_update_read_handler(chr);
1036 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1038 PtyCharDriver *s = chr->opaque;
1041 g_source_remove(s->timer_tag);
1046 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1048 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1052 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1054 PtyCharDriver *s = chr->opaque;
1056 if (!s->connected) {
1057 /* guest sends data, check for (re-)connect */
1058 pty_chr_update_read_handler(chr);
1061 return io_channel_send(s->fd, buf, len);
1064 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1066 PtyCharDriver *s = chr->opaque;
1067 return g_io_create_watch(s->fd, cond);
1070 static int pty_chr_read_poll(void *opaque)
1072 CharDriverState *chr = opaque;
1073 PtyCharDriver *s = chr->opaque;
1075 s->read_bytes = qemu_chr_be_can_write(chr);
1076 return s->read_bytes;
1079 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1081 CharDriverState *chr = opaque;
1082 PtyCharDriver *s = chr->opaque;
1084 uint8_t buf[READ_BUF_LEN];
1088 if (len > s->read_bytes)
1089 len = s->read_bytes;
1093 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1094 if (status != G_IO_STATUS_NORMAL) {
1095 pty_chr_state(chr, 0);
1098 pty_chr_state(chr, 1);
1099 qemu_chr_be_write(chr, buf, size);
1104 static void pty_chr_update_read_handler(CharDriverState *chr)
1106 PtyCharDriver *s = chr->opaque;
1109 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1110 pfd.events = G_IO_OUT;
1113 if (pfd.revents & G_IO_HUP) {
1114 pty_chr_state(chr, 0);
1116 pty_chr_state(chr, 1);
1120 static void pty_chr_state(CharDriverState *chr, int connected)
1122 PtyCharDriver *s = chr->opaque;
1125 remove_fd_in_watch(chr);
1127 /* (re-)connect poll interval for idle guests: once per second.
1128 * We check more frequently in case the guests sends data to
1129 * the virtual device linked to our pty. */
1130 pty_chr_rearm_timer(chr, 1000);
1133 g_source_remove(s->timer_tag);
1136 if (!s->connected) {
1138 qemu_chr_be_generic_open(chr);
1139 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1146 static void pty_chr_close(struct CharDriverState *chr)
1148 PtyCharDriver *s = chr->opaque;
1151 remove_fd_in_watch(chr);
1152 fd = g_io_channel_unix_get_fd(s->fd);
1153 g_io_channel_unref(s->fd);
1156 g_source_remove(s->timer_tag);
1160 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1163 static CharDriverState *qemu_chr_open_pty(const char *id,
1166 CharDriverState *chr;
1168 int master_fd, slave_fd;
1169 char pty_name[PATH_MAX];
1171 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1172 if (master_fd < 0) {
1178 chr = g_malloc0(sizeof(CharDriverState));
1180 chr->filename = g_strdup_printf("pty:%s", pty_name);
1181 ret->pty = g_strdup(pty_name);
1182 ret->has_pty = true;
1184 fprintf(stderr, "char device redirected to %s (label %s)\n",
1187 s = g_malloc0(sizeof(PtyCharDriver));
1189 chr->chr_write = pty_chr_write;
1190 chr->chr_update_read_handler = pty_chr_update_read_handler;
1191 chr->chr_close = pty_chr_close;
1192 chr->chr_add_watch = pty_chr_add_watch;
1193 chr->explicit_be_open = true;
1195 s->fd = io_channel_from_fd(master_fd);
1201 static void tty_serial_init(int fd, int speed,
1202 int parity, int data_bits, int stop_bits)
1208 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1209 speed, parity, data_bits, stop_bits);
1211 tcgetattr (fd, &tty);
1213 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1214 speed = speed * 10 / 11;
1231 /* Non-Posix values follow. They may be unsupported on some systems. */
1233 check_speed(115200);
1235 check_speed(230400);
1238 check_speed(460800);
1241 check_speed(500000);
1244 check_speed(576000);
1247 check_speed(921600);
1250 check_speed(1000000);
1253 check_speed(1152000);
1256 check_speed(1500000);
1259 check_speed(2000000);
1262 check_speed(2500000);
1265 check_speed(3000000);
1268 check_speed(3500000);
1271 check_speed(4000000);
1276 cfsetispeed(&tty, spd);
1277 cfsetospeed(&tty, spd);
1279 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1280 |INLCR|IGNCR|ICRNL|IXON);
1281 tty.c_oflag |= OPOST;
1282 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1283 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1304 tty.c_cflag |= PARENB;
1307 tty.c_cflag |= PARENB | PARODD;
1311 tty.c_cflag |= CSTOPB;
1313 tcsetattr (fd, TCSANOW, &tty);
1316 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1318 FDCharDriver *s = chr->opaque;
1321 case CHR_IOCTL_SERIAL_SET_PARAMS:
1323 QEMUSerialSetParams *ssp = arg;
1324 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1325 ssp->speed, ssp->parity,
1326 ssp->data_bits, ssp->stop_bits);
1329 case CHR_IOCTL_SERIAL_SET_BREAK:
1331 int enable = *(int *)arg;
1333 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1337 case CHR_IOCTL_SERIAL_GET_TIOCM:
1340 int *targ = (int *)arg;
1341 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1343 if (sarg & TIOCM_CTS)
1344 *targ |= CHR_TIOCM_CTS;
1345 if (sarg & TIOCM_CAR)
1346 *targ |= CHR_TIOCM_CAR;
1347 if (sarg & TIOCM_DSR)
1348 *targ |= CHR_TIOCM_DSR;
1349 if (sarg & TIOCM_RI)
1350 *targ |= CHR_TIOCM_RI;
1351 if (sarg & TIOCM_DTR)
1352 *targ |= CHR_TIOCM_DTR;
1353 if (sarg & TIOCM_RTS)
1354 *targ |= CHR_TIOCM_RTS;
1357 case CHR_IOCTL_SERIAL_SET_TIOCM:
1359 int sarg = *(int *)arg;
1361 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1362 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1363 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1364 if (sarg & CHR_TIOCM_CTS)
1366 if (sarg & CHR_TIOCM_CAR)
1368 if (sarg & CHR_TIOCM_DSR)
1370 if (sarg & CHR_TIOCM_RI)
1372 if (sarg & CHR_TIOCM_DTR)
1374 if (sarg & CHR_TIOCM_RTS)
1376 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1385 static void qemu_chr_close_tty(CharDriverState *chr)
1387 FDCharDriver *s = chr->opaque;
1391 fd = g_io_channel_unix_get_fd(s->fd_in);
1401 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1403 CharDriverState *chr;
1405 tty_serial_init(fd, 115200, 'N', 8, 1);
1406 chr = qemu_chr_open_fd(fd, fd);
1407 chr->chr_ioctl = tty_serial_ioctl;
1408 chr->chr_close = qemu_chr_close_tty;
1411 #endif /* __linux__ || __sun__ */
1413 #if defined(__linux__)
1415 #define HAVE_CHARDEV_PARPORT 1
1420 } ParallelCharDriver;
1422 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1424 if (s->mode != mode) {
1426 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1433 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1435 ParallelCharDriver *drv = chr->opaque;
1440 case CHR_IOCTL_PP_READ_DATA:
1441 if (ioctl(fd, PPRDATA, &b) < 0)
1443 *(uint8_t *)arg = b;
1445 case CHR_IOCTL_PP_WRITE_DATA:
1446 b = *(uint8_t *)arg;
1447 if (ioctl(fd, PPWDATA, &b) < 0)
1450 case CHR_IOCTL_PP_READ_CONTROL:
1451 if (ioctl(fd, PPRCONTROL, &b) < 0)
1453 /* Linux gives only the lowest bits, and no way to know data
1454 direction! For better compatibility set the fixed upper
1456 *(uint8_t *)arg = b | 0xc0;
1458 case CHR_IOCTL_PP_WRITE_CONTROL:
1459 b = *(uint8_t *)arg;
1460 if (ioctl(fd, PPWCONTROL, &b) < 0)
1463 case CHR_IOCTL_PP_READ_STATUS:
1464 if (ioctl(fd, PPRSTATUS, &b) < 0)
1466 *(uint8_t *)arg = b;
1468 case CHR_IOCTL_PP_DATA_DIR:
1469 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1472 case CHR_IOCTL_PP_EPP_READ_ADDR:
1473 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1474 struct ParallelIOArg *parg = arg;
1475 int n = read(fd, parg->buffer, parg->count);
1476 if (n != parg->count) {
1481 case CHR_IOCTL_PP_EPP_READ:
1482 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1483 struct ParallelIOArg *parg = arg;
1484 int n = read(fd, parg->buffer, parg->count);
1485 if (n != parg->count) {
1490 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1491 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1492 struct ParallelIOArg *parg = arg;
1493 int n = write(fd, parg->buffer, parg->count);
1494 if (n != parg->count) {
1499 case CHR_IOCTL_PP_EPP_WRITE:
1500 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1501 struct ParallelIOArg *parg = arg;
1502 int n = write(fd, parg->buffer, parg->count);
1503 if (n != parg->count) {
1514 static void pp_close(CharDriverState *chr)
1516 ParallelCharDriver *drv = chr->opaque;
1519 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1520 ioctl(fd, PPRELEASE);
1523 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1526 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1528 CharDriverState *chr;
1529 ParallelCharDriver *drv;
1531 if (ioctl(fd, PPCLAIM) < 0) {
1536 drv = g_malloc0(sizeof(ParallelCharDriver));
1538 drv->mode = IEEE1284_MODE_COMPAT;
1540 chr = g_malloc0(sizeof(CharDriverState));
1541 chr->chr_write = null_chr_write;
1542 chr->chr_ioctl = pp_ioctl;
1543 chr->chr_close = pp_close;
1548 #endif /* __linux__ */
1550 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1552 #define HAVE_CHARDEV_PARPORT 1
1554 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1556 int fd = (int)(intptr_t)chr->opaque;
1560 case CHR_IOCTL_PP_READ_DATA:
1561 if (ioctl(fd, PPIGDATA, &b) < 0)
1563 *(uint8_t *)arg = b;
1565 case CHR_IOCTL_PP_WRITE_DATA:
1566 b = *(uint8_t *)arg;
1567 if (ioctl(fd, PPISDATA, &b) < 0)
1570 case CHR_IOCTL_PP_READ_CONTROL:
1571 if (ioctl(fd, PPIGCTRL, &b) < 0)
1573 *(uint8_t *)arg = b;
1575 case CHR_IOCTL_PP_WRITE_CONTROL:
1576 b = *(uint8_t *)arg;
1577 if (ioctl(fd, PPISCTRL, &b) < 0)
1580 case CHR_IOCTL_PP_READ_STATUS:
1581 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1583 *(uint8_t *)arg = b;
1591 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1593 CharDriverState *chr;
1595 chr = g_malloc0(sizeof(CharDriverState));
1596 chr->opaque = (void *)(intptr_t)fd;
1597 chr->chr_write = null_chr_write;
1598 chr->chr_ioctl = pp_ioctl;
1599 chr->explicit_be_open = true;
1608 HANDLE hcom, hrecv, hsend;
1609 OVERLAPPED orecv, osend;
1616 HANDLE hInputReadyEvent;
1617 HANDLE hInputDoneEvent;
1618 HANDLE hInputThread;
1619 uint8_t win_stdio_buf;
1620 } WinStdioCharState;
1622 #define NSENDBUF 2048
1623 #define NRECVBUF 2048
1624 #define MAXCONNECT 1
1625 #define NTIMEOUT 5000
1627 static int win_chr_poll(void *opaque);
1628 static int win_chr_pipe_poll(void *opaque);
1630 static void win_chr_close(CharDriverState *chr)
1632 WinCharState *s = chr->opaque;
1635 CloseHandle(s->hsend);
1639 CloseHandle(s->hrecv);
1643 CloseHandle(s->hcom);
1647 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1649 qemu_del_polling_cb(win_chr_poll, chr);
1651 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1654 static int win_chr_init(CharDriverState *chr, const char *filename)
1656 WinCharState *s = chr->opaque;
1658 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1663 int open_flags, ret;
1666 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1668 fprintf(stderr, "Failed CreateEvent\n");
1671 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1673 fprintf(stderr, "Failed CreateEvent\n");
1677 s->hcom = CreateFile(filename,
1678 GENERIC_READ|GENERIC_WRITE, 0, NULL,
1679 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1681 open_flags = O_BINARY | O_RDWR;
1682 // TODO : FILE_FLAG_OVERLAPPED
1684 ret = qemu_open(filename, open_flags, 0644);
1686 fprintf(stderr, "win_chr_init failed(%d)\n", ret);
1689 s->hcom = (HANDLE)_get_osfhandle(ret);
1691 if (s->hcom == INVALID_HANDLE_VALUE) {
1692 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1697 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1698 fprintf(stderr, "Failed SetupComm\n");
1702 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1703 size = sizeof(COMMCONFIG);
1704 GetDefaultCommConfig(filename, &comcfg, &size);
1705 comcfg.dcb.DCBlength = sizeof(DCB);
1706 CommConfigDialog(filename, NULL, &comcfg);
1708 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1709 fprintf(stderr, "Failed SetCommState\n");
1713 if (!SetCommMask(s->hcom, EV_ERR)) {
1714 fprintf(stderr, "Failed SetCommMask\n");
1718 cto.ReadIntervalTimeout = MAXDWORD;
1719 if (!SetCommTimeouts(s->hcom, &cto)) {
1720 fprintf(stderr, "Failed SetCommTimeouts\n");
1724 if (!ClearCommError(s->hcom, &err, &comstat)) {
1725 fprintf(stderr, "Failed ClearCommError\n");
1728 qemu_add_polling_cb(win_chr_poll, chr);
1736 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1738 WinCharState *s = chr->opaque;
1739 DWORD len, ret, size, err;
1742 ZeroMemory(&s->osend, sizeof(s->osend));
1743 s->osend.hEvent = s->hsend;
1746 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1748 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1750 err = GetLastError();
1751 if (err == ERROR_IO_PENDING) {
1752 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1770 static int win_chr_read_poll(CharDriverState *chr)
1772 WinCharState *s = chr->opaque;
1774 s->max_size = qemu_chr_be_can_write(chr);
1778 static void win_chr_readfile(CharDriverState *chr)
1780 WinCharState *s = chr->opaque;
1782 uint8_t buf[READ_BUF_LEN];
1785 ZeroMemory(&s->orecv, sizeof(s->orecv));
1786 s->orecv.hEvent = s->hrecv;
1787 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1789 err = GetLastError();
1790 if (err == ERROR_IO_PENDING) {
1791 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1796 qemu_chr_be_write(chr, buf, size);
1800 static void win_chr_read(CharDriverState *chr)
1802 WinCharState *s = chr->opaque;
1804 if (s->len > s->max_size)
1805 s->len = s->max_size;
1809 win_chr_readfile(chr);
1812 static int win_chr_poll(void *opaque)
1814 CharDriverState *chr = opaque;
1815 WinCharState *s = chr->opaque;
1819 ClearCommError(s->hcom, &comerr, &status);
1820 if (status.cbInQue > 0) {
1821 s->len = status.cbInQue;
1822 win_chr_read_poll(chr);
1829 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1831 CharDriverState *chr;
1834 chr = g_malloc0(sizeof(CharDriverState));
1835 s = g_malloc0(sizeof(WinCharState));
1837 chr->chr_write = win_chr_write;
1838 chr->chr_close = win_chr_close;
1840 if (win_chr_init(chr, filename) < 0) {
1848 static int win_chr_pipe_poll(void *opaque)
1850 CharDriverState *chr = opaque;
1851 WinCharState *s = chr->opaque;
1854 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1857 win_chr_read_poll(chr);
1864 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1866 WinCharState *s = chr->opaque;
1874 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1876 fprintf(stderr, "Failed CreateEvent\n");
1879 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1881 fprintf(stderr, "Failed CreateEvent\n");
1885 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1886 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1887 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1889 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1890 if (s->hcom == INVALID_HANDLE_VALUE) {
1891 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1896 ZeroMemory(&ov, sizeof(ov));
1897 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1898 ret = ConnectNamedPipe(s->hcom, &ov);
1900 fprintf(stderr, "Failed ConnectNamedPipe\n");
1904 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1906 fprintf(stderr, "Failed GetOverlappedResult\n");
1908 CloseHandle(ov.hEvent);
1915 CloseHandle(ov.hEvent);
1918 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1927 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1929 const char *filename = opts->device;
1930 CharDriverState *chr;
1933 chr = g_malloc0(sizeof(CharDriverState));
1934 s = g_malloc0(sizeof(WinCharState));
1936 chr->chr_write = win_chr_write;
1937 chr->chr_close = win_chr_close;
1939 if (win_chr_pipe_init(chr, filename) < 0) {
1947 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1949 CharDriverState *chr;
1952 chr = g_malloc0(sizeof(CharDriverState));
1953 s = g_malloc0(sizeof(WinCharState));
1956 chr->chr_write = win_chr_write;
1960 static CharDriverState *qemu_chr_open_win_con(void)
1962 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1965 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1967 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1974 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1984 static void win_stdio_wait_func(void *opaque)
1986 CharDriverState *chr = opaque;
1987 WinStdioCharState *stdio = chr->opaque;
1988 INPUT_RECORD buf[4];
1993 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1997 /* Avoid error storm */
1998 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2002 for (i = 0; i < dwSize; i++) {
2003 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2005 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2007 if (kev->uChar.AsciiChar != 0) {
2008 for (j = 0; j < kev->wRepeatCount; j++) {
2009 if (qemu_chr_be_can_write(chr)) {
2010 uint8_t c = kev->uChar.AsciiChar;
2011 qemu_chr_be_write(chr, &c, 1);
2019 static DWORD WINAPI win_stdio_thread(LPVOID param)
2021 CharDriverState *chr = param;
2022 WinStdioCharState *stdio = chr->opaque;
2028 /* Wait for one byte */
2029 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2031 /* Exit in case of error, continue if nothing read */
2039 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2040 if (stdio->win_stdio_buf == '\r') {
2044 /* Signal the main thread and wait until the byte was eaten */
2045 if (!SetEvent(stdio->hInputReadyEvent)) {
2048 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2054 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2058 static void win_stdio_thread_wait_func(void *opaque)
2060 CharDriverState *chr = opaque;
2061 WinStdioCharState *stdio = chr->opaque;
2063 if (qemu_chr_be_can_write(chr)) {
2064 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2067 SetEvent(stdio->hInputDoneEvent);
2070 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2072 WinStdioCharState *stdio = chr->opaque;
2075 GetConsoleMode(stdio->hStdIn, &dwMode);
2078 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2080 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2084 static void win_stdio_close(CharDriverState *chr)
2086 WinStdioCharState *stdio = chr->opaque;
2088 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2089 CloseHandle(stdio->hInputReadyEvent);
2091 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2092 CloseHandle(stdio->hInputDoneEvent);
2094 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2095 TerminateThread(stdio->hInputThread, 0);
2098 g_free(chr->opaque);
2102 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2104 CharDriverState *chr;
2105 WinStdioCharState *stdio;
2109 chr = g_malloc0(sizeof(CharDriverState));
2110 stdio = g_malloc0(sizeof(WinStdioCharState));
2112 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2113 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2114 fprintf(stderr, "cannot open stdio: invalid handle\n");
2118 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2120 chr->opaque = stdio;
2121 chr->chr_write = win_stdio_write;
2122 chr->chr_close = win_stdio_close;
2125 if (qemu_add_wait_object(stdio->hStdIn,
2126 win_stdio_wait_func, chr)) {
2127 fprintf(stderr, "qemu_add_wait_object: failed\n");
2132 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2133 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2134 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2137 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2138 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2139 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2140 fprintf(stderr, "cannot create stdio thread or event\n");
2143 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2144 win_stdio_thread_wait_func, chr)) {
2145 fprintf(stderr, "qemu_add_wait_object: failed\n");
2149 dwMode |= ENABLE_LINE_INPUT;
2152 /* set the terminal in raw mode */
2153 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2154 dwMode |= ENABLE_PROCESSED_INPUT;
2157 SetConsoleMode(stdio->hStdIn, dwMode);
2159 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2160 qemu_chr_fe_set_echo(chr, false);
2164 #endif /* !_WIN32 */
2167 /***********************************************************/
2168 /* UDP Net console */
2173 uint8_t buf[READ_BUF_LEN];
2179 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2181 NetCharDriver *s = chr->opaque;
2182 gsize bytes_written;
2185 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2186 if (status == G_IO_STATUS_EOF) {
2188 } else if (status != G_IO_STATUS_NORMAL) {
2192 return bytes_written;
2195 static int udp_chr_read_poll(void *opaque)
2197 CharDriverState *chr = opaque;
2198 NetCharDriver *s = chr->opaque;
2200 s->max_size = qemu_chr_be_can_write(chr);
2202 /* If there were any stray characters in the queue process them
2205 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2206 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2208 s->max_size = qemu_chr_be_can_write(chr);
2213 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2215 CharDriverState *chr = opaque;
2216 NetCharDriver *s = chr->opaque;
2217 gsize bytes_read = 0;
2220 if (s->max_size == 0) {
2223 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2225 s->bufcnt = bytes_read;
2226 s->bufptr = s->bufcnt;
2227 if (status != G_IO_STATUS_NORMAL) {
2228 remove_fd_in_watch(chr);
2233 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2234 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2236 s->max_size = qemu_chr_be_can_write(chr);
2242 static void udp_chr_update_read_handler(CharDriverState *chr)
2244 NetCharDriver *s = chr->opaque;
2246 remove_fd_in_watch(chr);
2248 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2253 static void udp_chr_close(CharDriverState *chr)
2255 NetCharDriver *s = chr->opaque;
2257 remove_fd_in_watch(chr);
2259 g_io_channel_unref(s->chan);
2263 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2266 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2268 CharDriverState *chr = NULL;
2269 NetCharDriver *s = NULL;
2271 chr = g_malloc0(sizeof(CharDriverState));
2272 s = g_malloc0(sizeof(NetCharDriver));
2275 s->chan = io_channel_from_socket(s->fd);
2279 chr->chr_write = udp_chr_write;
2280 chr->chr_update_read_handler = udp_chr_update_read_handler;
2281 chr->chr_close = udp_chr_close;
2282 /* be isn't opened until we get a connection */
2283 chr->explicit_be_open = true;
2287 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2289 Error *local_err = NULL;
2292 fd = inet_dgram_opts(opts, &local_err);
2294 qerror_report_err(local_err);
2295 error_free(local_err);
2298 return qemu_chr_open_udp_fd(fd);
2301 /***********************************************************/
2302 /* TCP Net console */
2306 GIOChannel *chan, *listen_chan;
2317 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2319 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2321 TCPCharDriver *s = chr->opaque;
2323 return io_channel_send(s->chan, buf, len);
2325 /* XXX: indicate an error ? */
2330 static int tcp_chr_read_poll(void *opaque)
2332 CharDriverState *chr = opaque;
2333 TCPCharDriver *s = chr->opaque;
2336 s->max_size = qemu_chr_be_can_write(chr);
2341 #define IAC_BREAK 243
2342 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2344 uint8_t *buf, int *size)
2346 /* Handle any telnet client's basic IAC options to satisfy char by
2347 * char mode with no echo. All IAC options will be removed from
2348 * the buf and the do_telnetopt variable will be used to track the
2349 * state of the width of the IAC information.
2351 * IAC commands come in sets of 3 bytes with the exception of the
2352 * "IAC BREAK" command and the double IAC.
2358 for (i = 0; i < *size; i++) {
2359 if (s->do_telnetopt > 1) {
2360 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2361 /* Double IAC means send an IAC */
2365 s->do_telnetopt = 1;
2367 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2368 /* Handle IAC break commands by sending a serial break */
2369 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2374 if (s->do_telnetopt >= 4) {
2375 s->do_telnetopt = 1;
2378 if ((unsigned char)buf[i] == IAC) {
2379 s->do_telnetopt = 2;
2390 static int tcp_get_msgfd(CharDriverState *chr)
2392 TCPCharDriver *s = chr->opaque;
2399 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2401 TCPCharDriver *s = chr->opaque;
2402 struct cmsghdr *cmsg;
2404 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2407 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2408 cmsg->cmsg_level != SOL_SOCKET ||
2409 cmsg->cmsg_type != SCM_RIGHTS)
2412 fd = *((int *)CMSG_DATA(cmsg));
2416 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2419 #ifndef MSG_CMSG_CLOEXEC
2420 qemu_set_cloexec(fd);
2428 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2430 TCPCharDriver *s = chr->opaque;
2431 struct msghdr msg = { NULL, };
2432 struct iovec iov[1];
2434 struct cmsghdr cmsg;
2435 char control[CMSG_SPACE(sizeof(int))];
2440 iov[0].iov_base = buf;
2441 iov[0].iov_len = len;
2445 msg.msg_control = &msg_control;
2446 msg.msg_controllen = sizeof(msg_control);
2448 #ifdef MSG_CMSG_CLOEXEC
2449 flags |= MSG_CMSG_CLOEXEC;
2451 ret = recvmsg(s->fd, &msg, flags);
2452 if (ret > 0 && s->is_unix) {
2453 unix_process_msgfd(chr, &msg);
2459 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2461 TCPCharDriver *s = chr->opaque;
2462 return qemu_recv(s->fd, buf, len, 0);
2466 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2468 TCPCharDriver *s = chr->opaque;
2469 return g_io_create_watch(s->chan, cond);
2472 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2474 CharDriverState *chr = opaque;
2475 TCPCharDriver *s = chr->opaque;
2476 uint8_t buf[READ_BUF_LEN];
2479 if (!s->connected || s->max_size <= 0) {
2483 if (len > s->max_size)
2485 size = tcp_chr_recv(chr, (void *)buf, len);
2487 /* connection closed */
2489 if (s->listen_chan) {
2490 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2492 remove_fd_in_watch(chr);
2493 g_io_channel_unref(s->chan);
2497 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2498 } else if (size > 0) {
2499 if (s->do_telnetopt)
2500 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2502 qemu_chr_be_write(chr, buf, size);
2509 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2511 return qemu_chr_open_fd(eventfd, eventfd);
2515 static void tcp_chr_connect(void *opaque)
2517 CharDriverState *chr = opaque;
2518 TCPCharDriver *s = chr->opaque;
2522 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2525 qemu_chr_be_generic_open(chr);
2528 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2529 static void tcp_chr_telnet_init(int fd)
2532 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2533 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2534 send(fd, (char *)buf, 3, 0);
2535 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2536 send(fd, (char *)buf, 3, 0);
2537 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2538 send(fd, (char *)buf, 3, 0);
2539 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2540 send(fd, (char *)buf, 3, 0);
2543 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2545 TCPCharDriver *s = chr->opaque;
2549 qemu_set_nonblock(fd);
2551 socket_set_nodelay(fd);
2553 s->chan = io_channel_from_socket(fd);
2554 if (s->listen_tag) {
2555 g_source_remove(s->listen_tag);
2558 tcp_chr_connect(chr);
2563 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2565 CharDriverState *chr = opaque;
2566 TCPCharDriver *s = chr->opaque;
2567 struct sockaddr_in saddr;
2569 struct sockaddr_un uaddr;
2571 struct sockaddr *addr;
2578 len = sizeof(uaddr);
2579 addr = (struct sockaddr *)&uaddr;
2583 len = sizeof(saddr);
2584 addr = (struct sockaddr *)&saddr;
2586 fd = qemu_accept(s->listen_fd, addr, &len);
2587 if (fd < 0 && errno != EINTR) {
2590 } else if (fd >= 0) {
2591 if (s->do_telnetopt)
2592 tcp_chr_telnet_init(fd);
2596 if (tcp_chr_add_client(chr, fd) < 0)
2602 static void tcp_chr_close(CharDriverState *chr)
2604 TCPCharDriver *s = chr->opaque;
2606 remove_fd_in_watch(chr);
2608 g_io_channel_unref(s->chan);
2612 if (s->listen_fd >= 0) {
2613 if (s->listen_tag) {
2614 g_source_remove(s->listen_tag);
2617 if (s->listen_chan) {
2618 g_io_channel_unref(s->listen_chan);
2620 closesocket(s->listen_fd);
2623 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2626 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2627 bool is_listen, bool is_telnet,
2628 bool is_waitconnect,
2631 CharDriverState *chr = NULL;
2632 TCPCharDriver *s = NULL;
2633 char host[NI_MAXHOST], serv[NI_MAXSERV];
2634 const char *left = "", *right = "";
2635 struct sockaddr_storage ss;
2636 socklen_t ss_len = sizeof(ss);
2638 memset(&ss, 0, ss_len);
2639 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2640 error_setg_errno(errp, errno, "getsockname");
2644 chr = g_malloc0(sizeof(CharDriverState));
2645 s = g_malloc0(sizeof(TCPCharDriver));
2652 chr->filename = g_malloc(256);
2653 switch (ss.ss_family) {
2657 snprintf(chr->filename, 256, "unix:%s%s",
2658 ((struct sockaddr_un *)(&ss))->sun_path,
2659 is_listen ? ",server" : "");
2667 s->do_nodelay = do_nodelay;
2668 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2669 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2670 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2671 is_telnet ? "telnet" : "tcp",
2672 left, host, right, serv,
2673 is_listen ? ",server" : "");
2678 chr->chr_write = tcp_chr_write;
2679 chr->chr_close = tcp_chr_close;
2680 chr->get_msgfd = tcp_get_msgfd;
2681 chr->chr_add_client = tcp_chr_add_client;
2682 chr->chr_add_watch = tcp_chr_add_watch;
2683 /* be isn't opened until we get a connection */
2684 chr->explicit_be_open = true;
2688 s->listen_chan = io_channel_from_socket(s->listen_fd);
2689 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2691 s->do_telnetopt = 1;
2696 socket_set_nodelay(fd);
2697 s->chan = io_channel_from_socket(s->fd);
2698 tcp_chr_connect(chr);
2701 if (is_listen && is_waitconnect) {
2702 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2704 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2705 qemu_set_nonblock(s->listen_fd);
2710 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2712 CharDriverState *chr = NULL;
2713 Error *local_err = NULL;
2716 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2717 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2718 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2719 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2720 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2724 fd = unix_listen_opts(opts, &local_err);
2726 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2730 fd = inet_listen_opts(opts, 0, &local_err);
2732 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2739 if (!is_waitconnect)
2740 qemu_set_nonblock(fd);
2742 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2743 is_waitconnect, &local_err);
2744 if (error_is_set(&local_err)) {
2752 qerror_report_err(local_err);
2753 error_free(local_err);
2759 g_free(chr->opaque);
2765 /*********************************************************/
2766 /* Ring buffer chardev */
2773 } RingBufCharDriver;
2775 static size_t ringbuf_count(const CharDriverState *chr)
2777 const RingBufCharDriver *d = chr->opaque;
2779 return d->prod - d->cons;
2782 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2784 RingBufCharDriver *d = chr->opaque;
2787 if (!buf || (len < 0)) {
2791 for (i = 0; i < len; i++ ) {
2792 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2793 if (d->prod - d->cons > d->size) {
2794 d->cons = d->prod - d->size;
2801 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2803 RingBufCharDriver *d = chr->opaque;
2806 for (i = 0; i < len && d->cons != d->prod; i++) {
2807 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2813 static void ringbuf_chr_close(struct CharDriverState *chr)
2815 RingBufCharDriver *d = chr->opaque;
2822 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2825 CharDriverState *chr;
2826 RingBufCharDriver *d;
2828 chr = g_malloc0(sizeof(CharDriverState));
2829 d = g_malloc(sizeof(*d));
2831 d->size = opts->has_size ? opts->size : 65536;
2833 /* The size must be power of 2 */
2834 if (d->size & (d->size - 1)) {
2835 error_setg(errp, "size of ringbuf chardev must be power of two");
2841 d->cbuf = g_malloc0(d->size);
2844 chr->chr_write = ringbuf_chr_write;
2845 chr->chr_close = ringbuf_chr_close;
2855 static bool chr_is_ringbuf(const CharDriverState *chr)
2857 return chr->chr_write == ringbuf_chr_write;
2860 void qmp_ringbuf_write(const char *device, const char *data,
2861 bool has_format, enum DataFormat format,
2864 CharDriverState *chr;
2865 const uint8_t *write_data;
2869 chr = qemu_chr_find(device);
2871 error_setg(errp, "Device '%s' not found", device);
2875 if (!chr_is_ringbuf(chr)) {
2876 error_setg(errp,"%s is not a ringbuf device", device);
2880 if (has_format && (format == DATA_FORMAT_BASE64)) {
2881 write_data = g_base64_decode(data, &write_count);
2883 write_data = (uint8_t *)data;
2884 write_count = strlen(data);
2887 ret = ringbuf_chr_write(chr, write_data, write_count);
2889 if (write_data != (uint8_t *)data) {
2890 g_free((void *)write_data);
2894 error_setg(errp, "Failed to write to device %s", device);
2899 char *qmp_ringbuf_read(const char *device, int64_t size,
2900 bool has_format, enum DataFormat format,
2903 CharDriverState *chr;
2908 chr = qemu_chr_find(device);
2910 error_setg(errp, "Device '%s' not found", device);
2914 if (!chr_is_ringbuf(chr)) {
2915 error_setg(errp,"%s is not a ringbuf device", device);
2920 error_setg(errp, "size must be greater than zero");
2924 count = ringbuf_count(chr);
2925 size = size > count ? count : size;
2926 read_data = g_malloc(size + 1);
2928 ringbuf_chr_read(chr, read_data, size);
2930 if (has_format && (format == DATA_FORMAT_BASE64)) {
2931 data = g_base64_encode(read_data, size);
2935 * FIXME should read only complete, valid UTF-8 characters up
2936 * to @size bytes. Invalid sequences should be replaced by a
2937 * suitable replacement character. Except when (and only
2938 * when) ring buffer lost characters since last read, initial
2939 * continuation characters should be dropped.
2941 read_data[size] = 0;
2942 data = (char *)read_data;
2948 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2950 char host[65], port[33], width[8], height[8];
2954 Error *local_err = NULL;
2956 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2957 if (error_is_set(&local_err)) {
2958 qerror_report_err(local_err);
2959 error_free(local_err);
2963 if (strstart(filename, "mon:", &p)) {
2965 qemu_opt_set(opts, "mux", "on");
2966 if (strcmp(filename, "stdio") == 0) {
2967 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
2968 * but pass it to the guest. Handle this only for compat syntax,
2969 * for -chardev syntax we have special option for this.
2970 * This is what -nographic did, redirecting+muxing serial+monitor
2971 * to stdio causing Ctrl+C to be passed to guest. */
2972 qemu_opt_set(opts, "signal", "off");
2976 if (strcmp(filename, "null") == 0 ||
2977 strcmp(filename, "pty") == 0 ||
2978 strcmp(filename, "msmouse") == 0 ||
2979 strcmp(filename, "braille") == 0 ||
2980 strcmp(filename, "stdio") == 0) {
2981 qemu_opt_set(opts, "backend", filename);
2984 if (strstart(filename, "vc", &p)) {
2985 qemu_opt_set(opts, "backend", "vc");
2987 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
2989 qemu_opt_set(opts, "width", width);
2990 qemu_opt_set(opts, "height", height);
2991 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
2993 qemu_opt_set(opts, "cols", width);
2994 qemu_opt_set(opts, "rows", height);
3001 if (strcmp(filename, "con:") == 0) {
3002 qemu_opt_set(opts, "backend", "console");
3005 if (strstart(filename, "COM", NULL)) {
3006 qemu_opt_set(opts, "backend", "serial");
3007 qemu_opt_set(opts, "path", filename);
3010 if (strstart(filename, "file:", &p)) {
3011 qemu_opt_set(opts, "backend", "file");
3012 qemu_opt_set(opts, "path", p);
3015 if (strstart(filename, "pipe:", &p)) {
3016 qemu_opt_set(opts, "backend", "pipe");
3017 qemu_opt_set(opts, "path", p);
3020 if (strstart(filename, "tcp:", &p) ||
3021 strstart(filename, "telnet:", &p)) {
3022 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3024 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3027 qemu_opt_set(opts, "backend", "socket");
3028 qemu_opt_set(opts, "host", host);
3029 qemu_opt_set(opts, "port", port);
3030 if (p[pos] == ',') {
3031 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3034 if (strstart(filename, "telnet:", &p))
3035 qemu_opt_set(opts, "telnet", "on");
3038 if (strstart(filename, "udp:", &p)) {
3039 qemu_opt_set(opts, "backend", "udp");
3040 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3042 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3046 qemu_opt_set(opts, "host", host);
3047 qemu_opt_set(opts, "port", port);
3048 if (p[pos] == '@') {
3050 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3052 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3056 qemu_opt_set(opts, "localaddr", host);
3057 qemu_opt_set(opts, "localport", port);
3061 if (strstart(filename, "unix:", &p)) {
3062 qemu_opt_set(opts, "backend", "socket");
3063 if (qemu_opts_do_parse(opts, p, "path") != 0)
3067 if (strstart(filename, "/dev/parport", NULL) ||
3068 strstart(filename, "/dev/ppi", NULL)) {
3069 qemu_opt_set(opts, "backend", "parport");
3070 qemu_opt_set(opts, "path", filename);
3073 if (strstart(filename, "/dev/", NULL)) {
3074 qemu_opt_set(opts, "backend", "tty");
3075 qemu_opt_set(opts, "path", filename);
3080 qemu_opts_del(opts);
3084 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3087 const char *path = qemu_opt_get(opts, "path");
3090 error_setg(errp, "chardev: file: no filename given");
3093 backend->file = g_new0(ChardevFile, 1);
3094 backend->file->out = g_strdup(path);
3097 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3100 backend->stdio = g_new0(ChardevStdio, 1);
3101 backend->stdio->has_signal = true;
3102 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3105 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3108 const char *device = qemu_opt_get(opts, "path");
3110 if (device == NULL) {
3111 error_setg(errp, "chardev: serial/tty: no device path given");
3114 backend->serial = g_new0(ChardevHostdev, 1);
3115 backend->serial->device = g_strdup(device);
3118 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3121 const char *device = qemu_opt_get(opts, "path");
3123 if (device == NULL) {
3124 error_setg(errp, "chardev: parallel: no device path given");
3127 backend->parallel = g_new0(ChardevHostdev, 1);
3128 backend->parallel->device = g_strdup(device);
3131 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3134 const char *device = qemu_opt_get(opts, "path");
3136 if (device == NULL) {
3137 error_setg(errp, "chardev: pipe: no device path given");
3140 backend->pipe = g_new0(ChardevHostdev, 1);
3141 backend->pipe->device = g_strdup(device);
3144 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3149 backend->ringbuf = g_new0(ChardevRingbuf, 1);
3151 val = qemu_opt_get_size(opts, "size", 0);
3153 backend->ringbuf->has_size = true;
3154 backend->ringbuf->size = val;
3158 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3161 const char *chardev = qemu_opt_get(opts, "chardev");
3163 if (chardev == NULL) {
3164 error_setg(errp, "chardev: mux: no chardev given");
3167 backend->mux = g_new0(ChardevMux, 1);
3168 backend->mux->chardev = g_strdup(chardev);
3171 typedef struct CharDriver {
3174 CharDriverState *(*open)(QemuOpts *opts);
3175 /* new, qapi-based */
3176 ChardevBackendKind kind;
3177 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3180 static GSList *backends;
3182 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3186 s = g_malloc0(sizeof(*s));
3187 s->name = g_strdup(name);
3190 backends = g_slist_append(backends, s);
3193 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3194 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3198 s = g_malloc0(sizeof(*s));
3199 s->name = g_strdup(name);
3203 backends = g_slist_append(backends, s);
3206 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3207 void (*init)(struct CharDriverState *s),
3211 CharDriverState *chr;
3214 if (qemu_opts_id(opts) == NULL) {
3215 error_setg(errp, "chardev: no id specified");
3219 if (qemu_opt_get(opts, "backend") == NULL) {
3220 error_setg(errp, "chardev: \"%s\" missing backend",
3221 qemu_opts_id(opts));
3224 for (i = backends; i; i = i->next) {
3227 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3232 error_setg(errp, "chardev: backend \"%s\" not found",
3233 qemu_opt_get(opts, "backend"));
3238 /* using new, qapi init */
3239 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3240 ChardevReturn *ret = NULL;
3241 const char *id = qemu_opts_id(opts);
3244 if (qemu_opt_get_bool(opts, "mux", 0)) {
3245 bid = g_strdup_printf("%s-base", id);
3249 backend->kind = cd->kind;
3251 cd->parse(opts, backend, errp);
3252 if (error_is_set(errp)) {
3256 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3257 if (error_is_set(errp)) {
3262 qapi_free_ChardevBackend(backend);
3263 qapi_free_ChardevReturn(ret);
3264 backend = g_new0(ChardevBackend, 1);
3265 backend->mux = g_new0(ChardevMux, 1);
3266 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3267 backend->mux->chardev = g_strdup(bid);
3268 ret = qmp_chardev_add(id, backend, errp);
3269 if (error_is_set(errp)) {
3270 chr = qemu_chr_find(bid);
3271 qemu_chr_delete(chr);
3277 chr = qemu_chr_find(id);
3281 qapi_free_ChardevBackend(backend);
3282 qapi_free_ChardevReturn(ret);
3287 chr = cd->open(opts);
3289 error_setg(errp, "chardev: opening backend \"%s\" failed",
3290 qemu_opt_get(opts, "backend"));
3295 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3297 /* if we didn't create the chardev via qmp_chardev_add, we
3298 * need to send the OPENED event here
3300 if (!chr->explicit_be_open) {
3301 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3303 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3305 if (qemu_opt_get_bool(opts, "mux", 0)) {
3306 CharDriverState *base = chr;
3307 int len = strlen(qemu_opts_id(opts)) + 6;
3308 base->label = g_malloc(len);
3309 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3310 chr = qemu_chr_open_mux(base);
3311 chr->filename = base->filename;
3312 chr->avail_connections = MAX_MUX;
3313 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3315 chr->avail_connections = 1;
3317 chr->label = g_strdup(qemu_opts_id(opts));
3322 qemu_opts_del(opts);
3326 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3329 CharDriverState *chr;
3333 if (strstart(filename, "chardev:", &p)) {
3334 return qemu_chr_find(p);
3337 opts = qemu_chr_parse_compat(label, filename);
3341 chr = qemu_chr_new_from_opts(opts, init, &err);
3342 if (error_is_set(&err)) {
3343 error_report("%s", error_get_pretty(err));
3346 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3347 qemu_chr_fe_claim_no_fail(chr);
3348 monitor_init(chr, MONITOR_USE_READLINE);
3353 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3355 if (chr->chr_set_echo) {
3356 chr->chr_set_echo(chr, echo);
3360 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3362 if (chr->fe_open == fe_open) {
3365 chr->fe_open = fe_open;
3366 if (chr->chr_set_fe_open) {
3367 chr->chr_set_fe_open(chr, fe_open);
3371 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3372 GIOFunc func, void *user_data)
3377 if (s->chr_add_watch == NULL) {
3381 src = s->chr_add_watch(s, cond);
3382 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3383 tag = g_source_attach(src, NULL);
3384 g_source_unref(src);
3389 int qemu_chr_fe_claim(CharDriverState *s)
3391 if (s->avail_connections < 1) {
3394 s->avail_connections--;
3398 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3400 if (qemu_chr_fe_claim(s) != 0) {
3401 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3402 __func__, s->label);
3407 void qemu_chr_fe_release(CharDriverState *s)
3409 s->avail_connections++;
3412 void qemu_chr_delete(CharDriverState *chr)
3414 QTAILQ_REMOVE(&chardevs, chr, next);
3415 if (chr->chr_close) {
3416 chr->chr_close(chr);
3418 g_free(chr->filename);
3421 qemu_opts_del(chr->opts);
3426 ChardevInfoList *qmp_query_chardev(Error **errp)
3428 ChardevInfoList *chr_list = NULL;
3429 CharDriverState *chr;
3431 QTAILQ_FOREACH(chr, &chardevs, next) {
3432 ChardevInfoList *info = g_malloc0(sizeof(*info));
3433 info->value = g_malloc0(sizeof(*info->value));
3434 info->value->label = g_strdup(chr->label);
3435 info->value->filename = g_strdup(chr->filename);
3437 info->next = chr_list;
3444 CharDriverState *qemu_chr_find(const char *name)
3446 CharDriverState *chr;
3448 QTAILQ_FOREACH(chr, &chardevs, next) {
3449 if (strcmp(chr->label, name) != 0)
3456 /* Get a character (serial) device interface. */
3457 CharDriverState *qemu_char_get_next_serial(void)
3459 static int next_serial;
3460 CharDriverState *chr;
3462 /* FIXME: This function needs to go away: use chardev properties! */
3464 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3465 chr = serial_hds[next_serial++];
3466 qemu_chr_fe_claim_no_fail(chr);
3472 QemuOptsList qemu_chardev_opts = {
3474 .implied_opt_name = "backend",
3475 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3479 .type = QEMU_OPT_STRING,
3482 .type = QEMU_OPT_STRING,
3485 .type = QEMU_OPT_STRING,
3488 .type = QEMU_OPT_STRING,
3490 .name = "localaddr",
3491 .type = QEMU_OPT_STRING,
3493 .name = "localport",
3494 .type = QEMU_OPT_STRING,
3497 .type = QEMU_OPT_NUMBER,
3500 .type = QEMU_OPT_BOOL,
3503 .type = QEMU_OPT_BOOL,
3506 .type = QEMU_OPT_BOOL,
3509 .type = QEMU_OPT_BOOL,
3512 .type = QEMU_OPT_BOOL,
3515 .type = QEMU_OPT_BOOL,
3518 .type = QEMU_OPT_NUMBER,
3521 .type = QEMU_OPT_NUMBER,
3524 .type = QEMU_OPT_NUMBER,
3527 .type = QEMU_OPT_NUMBER,
3530 .type = QEMU_OPT_BOOL,
3533 .type = QEMU_OPT_BOOL,
3536 .type = QEMU_OPT_STRING,
3539 .type = QEMU_OPT_NUMBER,
3542 .type = QEMU_OPT_SIZE,
3545 .type = QEMU_OPT_STRING,
3547 { /* end of list */ }
3553 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3557 int open_flags, ret;
3561 error_setg(errp, "input file not supported");
3566 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3567 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3569 open_flags = O_BINARY | O_RDWR | O_CREAT | O_TRUNC;
3570 ret = qemu_open(file->out, open_flags, 0644);
3572 error_setg(errp, "qemu_chr_open_win_file_out failed(%d)", ret);
3575 out = (HANDLE)_get_osfhandle(ret);
3577 if (out == INVALID_HANDLE_VALUE) {
3578 error_setg(errp, "open %s failed", file->out);
3582 return qemu_chr_open_win_file(out);
3585 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3588 return qemu_chr_open_win_path(serial->device);
3591 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3594 error_setg(errp, "character device backend type 'parallel' not supported");
3600 static int qmp_chardev_open_file_source(char *src, int flags,
3605 TFR(fd = qemu_open(src, flags, 0666));
3607 error_setg_file_open(errp, errno, src);
3612 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3614 int flags, in = -1, out = -1;
3616 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3617 out = qmp_chardev_open_file_source(file->out, flags, errp);
3618 if (error_is_set(errp)) {
3624 in = qmp_chardev_open_file_source(file->in, flags, errp);
3625 if (error_is_set(errp)) {
3631 return qemu_chr_open_fd(in, out);
3634 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3637 #ifdef HAVE_CHARDEV_TTY
3640 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3641 if (error_is_set(errp)) {
3644 qemu_set_nonblock(fd);
3645 return qemu_chr_open_tty_fd(fd);
3647 error_setg(errp, "character device backend type 'serial' not supported");
3652 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3655 #ifdef HAVE_CHARDEV_PARPORT
3658 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3659 if (error_is_set(errp)) {
3662 return qemu_chr_open_pp_fd(fd);
3664 error_setg(errp, "character device backend type 'parallel' not supported");
3671 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3674 SocketAddress *addr = sock->addr;
3675 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3676 bool is_listen = sock->has_server ? sock->server : true;
3677 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3678 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3682 fd = socket_listen(addr, errp);
3684 fd = socket_connect(addr, errp, NULL, NULL);
3686 if (error_is_set(errp)) {
3689 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3690 is_telnet, is_waitconnect, errp);
3693 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3698 fd = socket_dgram(udp->remote, udp->local, errp);
3699 if (error_is_set(errp)) {
3702 return qemu_chr_open_udp_fd(fd);
3705 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3708 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3709 CharDriverState *base, *chr = NULL;
3711 chr = qemu_chr_find(id);
3713 error_setg(errp, "Chardev '%s' already exists", id);
3718 switch (backend->kind) {
3719 case CHARDEV_BACKEND_KIND_FILE:
3720 chr = qmp_chardev_open_file(backend->file, errp);
3722 case CHARDEV_BACKEND_KIND_SERIAL:
3723 chr = qmp_chardev_open_serial(backend->serial, errp);
3725 case CHARDEV_BACKEND_KIND_PARALLEL:
3726 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3728 case CHARDEV_BACKEND_KIND_PIPE:
3729 chr = qemu_chr_open_pipe(backend->pipe);
3731 case CHARDEV_BACKEND_KIND_SOCKET:
3732 chr = qmp_chardev_open_socket(backend->socket, errp);
3734 case CHARDEV_BACKEND_KIND_UDP:
3735 chr = qmp_chardev_open_udp(backend->udp, errp);
3737 #ifdef HAVE_CHARDEV_TTY
3738 case CHARDEV_BACKEND_KIND_PTY:
3739 chr = qemu_chr_open_pty(id, ret);
3742 case CHARDEV_BACKEND_KIND_NULL:
3743 chr = qemu_chr_open_null();
3745 case CHARDEV_BACKEND_KIND_MUX:
3746 base = qemu_chr_find(backend->mux->chardev);
3748 error_setg(errp, "mux: base chardev %s not found",
3749 backend->mux->chardev);
3752 chr = qemu_chr_open_mux(base);
3754 case CHARDEV_BACKEND_KIND_MSMOUSE:
3755 chr = qemu_chr_open_msmouse();
3757 #ifdef CONFIG_BRLAPI
3758 case CHARDEV_BACKEND_KIND_BRAILLE:
3759 chr = chr_baum_init();
3762 case CHARDEV_BACKEND_KIND_STDIO:
3763 chr = qemu_chr_open_stdio(backend->stdio);
3766 case CHARDEV_BACKEND_KIND_CONSOLE:
3767 chr = qemu_chr_open_win_con();
3771 case CHARDEV_BACKEND_KIND_SPICEVMC:
3772 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3774 case CHARDEV_BACKEND_KIND_SPICEPORT:
3775 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3778 case CHARDEV_BACKEND_KIND_VC:
3779 chr = vc_init(backend->vc);
3781 case CHARDEV_BACKEND_KIND_RINGBUF:
3782 case CHARDEV_BACKEND_KIND_MEMORY:
3783 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
3786 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3790 if (chr == NULL && !error_is_set(errp)) {
3791 error_setg(errp, "Failed to create chardev");
3794 chr->label = g_strdup(id);
3795 chr->avail_connections =
3796 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3797 if (!chr->filename) {
3798 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
3800 if (!chr->explicit_be_open) {
3801 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3803 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3811 void qmp_chardev_remove(const char *id, Error **errp)
3813 CharDriverState *chr;
3815 chr = qemu_chr_find(id);
3817 error_setg(errp, "Chardev '%s' not found", id);
3820 if (chr->chr_can_read || chr->chr_read ||
3821 chr->chr_event || chr->handler_opaque) {
3822 error_setg(errp, "Chardev '%s' is busy", id);
3825 qemu_chr_delete(chr);
3828 static void register_types(void)
3830 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3831 register_char_driver("socket", qemu_chr_open_socket);
3832 register_char_driver("udp", qemu_chr_open_udp);
3833 register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
3834 qemu_chr_parse_ringbuf);
3835 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3836 qemu_chr_parse_file_out);
3837 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3838 qemu_chr_parse_stdio);
3839 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3840 qemu_chr_parse_serial);
3841 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3842 qemu_chr_parse_serial);
3843 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3844 qemu_chr_parse_parallel);
3845 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3846 qemu_chr_parse_parallel);
3847 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3848 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3849 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3850 qemu_chr_parse_pipe);
3851 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
3852 qemu_chr_parse_mux);
3853 /* Bug-compatibility: */
3854 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3855 qemu_chr_parse_ringbuf);
3856 /* this must be done after machine init, since we register FEs with muxes
3857 * as part of realize functions like serial_isa_realizefn when -nographic
3860 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
3863 type_init(register_types);