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 "sysemu/sysemu.h"
27 #include "qemu/timer.h"
28 #include "sysemu/char.h"
30 #include "qmp-commands.h"
40 #include <sys/times.h>
44 #include <sys/ioctl.h>
45 #include <sys/resource.h>
46 #include <sys/socket.h>
47 #include <netinet/in.h>
49 #include <arpa/inet.h>
52 #include <sys/select.h>
55 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
56 #include <dev/ppbus/ppi.h>
57 #include <dev/ppbus/ppbconf.h>
58 #elif defined(__DragonFly__)
59 #include <dev/misc/ppi/ppi.h>
60 #include <bus/ppbus/ppbconf.h>
64 #include <linux/ppdev.h>
65 #include <linux/parport.h>
69 #include <sys/ethernet.h>
70 #include <sys/sockio.h>
71 #include <netinet/arp.h>
72 #include <netinet/in.h>
73 #include <netinet/in_systm.h>
74 #include <netinet/ip.h>
75 #include <netinet/ip_icmp.h> // must come after ip.h
76 #include <netinet/udp.h>
77 #include <netinet/tcp.h>
82 #include "qemu/sockets.h"
83 #include "ui/qemu-spice.h"
85 #define READ_BUF_LEN 4096
86 #define READ_RETRIES 10
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_read_all(CharDriverState *s, uint8_t *buf, int len)
150 int offset = 0, counter = 10;
153 if (!s->chr_sync_read) {
157 while (offset < len) {
159 res = s->chr_sync_read(s, buf + offset, len - offset);
160 if (res == -1 && errno == EAGAIN) {
163 } while (res == -1 && errno == EAGAIN);
183 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
187 return s->chr_ioctl(s, cmd, arg);
190 int qemu_chr_be_can_write(CharDriverState *s)
192 if (!s->chr_can_read)
194 return s->chr_can_read(s->handler_opaque);
197 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
200 s->chr_read(s->handler_opaque, buf, len);
204 int qemu_chr_fe_get_msgfd(CharDriverState *s)
207 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
210 int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
212 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
215 int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
217 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
220 int qemu_chr_add_client(CharDriverState *s, int fd)
222 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
225 void qemu_chr_accept_input(CharDriverState *s)
227 if (s->chr_accept_input)
228 s->chr_accept_input(s);
232 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
234 char buf[READ_BUF_LEN];
237 vsnprintf(buf, sizeof(buf), fmt, ap);
238 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
242 static void remove_fd_in_watch(CharDriverState *chr);
244 void qemu_chr_add_handlers(CharDriverState *s,
245 IOCanReadHandler *fd_can_read,
246 IOReadHandler *fd_read,
247 IOEventHandler *fd_event,
252 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
254 remove_fd_in_watch(s);
258 s->chr_can_read = fd_can_read;
259 s->chr_read = fd_read;
260 s->chr_event = fd_event;
261 s->handler_opaque = opaque;
262 if (fe_open && s->chr_update_read_handler)
263 s->chr_update_read_handler(s);
265 if (!s->explicit_fe_open) {
266 qemu_chr_fe_set_open(s, fe_open);
269 /* We're connecting to an already opened device, so let's make sure we
270 also get the open event */
271 if (fe_open && s->be_open) {
272 qemu_chr_be_generic_open(s);
276 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
281 static CharDriverState *qemu_chr_open_null(void)
283 CharDriverState *chr;
285 chr = g_malloc0(sizeof(CharDriverState));
286 chr->chr_write = null_chr_write;
287 chr->explicit_be_open = true;
291 /* MUX driver for serial I/O splitting */
293 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
294 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
296 IOCanReadHandler *chr_can_read[MAX_MUX];
297 IOReadHandler *chr_read[MAX_MUX];
298 IOEventHandler *chr_event[MAX_MUX];
299 void *ext_opaque[MAX_MUX];
300 CharDriverState *drv;
305 /* Intermediate input buffer allows to catch escape sequences even if the
306 currently active device is not accepting any input - but only until it
308 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
313 int64_t timestamps_start;
317 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
319 MuxDriver *d = chr->opaque;
321 if (!d->timestamps) {
322 ret = d->drv->chr_write(d->drv, buf, len);
327 for (i = 0; i < len; i++) {
333 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
334 if (d->timestamps_start == -1)
335 d->timestamps_start = ti;
336 ti -= d->timestamps_start;
338 snprintf(buf1, sizeof(buf1),
339 "[%02d:%02d:%02d.%03d] ",
344 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
347 ret += d->drv->chr_write(d->drv, buf+i, 1);
348 if (buf[i] == '\n') {
356 static const char * const mux_help[] = {
357 "% h print this help\n\r",
358 "% x exit emulator\n\r",
359 "% s save disk data back to file (if -snapshot)\n\r",
360 "% t toggle console timestamps\n\r"
361 "% b send break (magic sysrq)\n\r",
362 "% c switch between console and monitor\n\r",
367 int term_escape_char = 0x01; /* ctrl-a is used for escape */
368 static void mux_print_help(CharDriverState *chr)
371 char ebuf[15] = "Escape-Char";
372 char cbuf[50] = "\n\r";
374 if (term_escape_char > 0 && term_escape_char < 26) {
375 snprintf(cbuf, sizeof(cbuf), "\n\r");
376 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
378 snprintf(cbuf, sizeof(cbuf),
379 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
382 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
383 for (i = 0; mux_help[i] != NULL; i++) {
384 for (j=0; mux_help[i][j] != '\0'; j++) {
385 if (mux_help[i][j] == '%')
386 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
388 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
393 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
395 if (d->chr_event[mux_nr])
396 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
399 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
401 if (d->term_got_escape) {
402 d->term_got_escape = 0;
403 if (ch == term_escape_char)
412 const char *term = "QEMU: Terminated\n\r";
413 chr->chr_write(chr,(uint8_t *)term,strlen(term));
421 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
424 /* Switch to the next registered device */
425 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
427 if (d->focus >= d->mux_cnt)
429 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
432 d->timestamps = !d->timestamps;
433 d->timestamps_start = -1;
437 } else if (ch == term_escape_char) {
438 d->term_got_escape = 1;
446 static void mux_chr_accept_input(CharDriverState *chr)
448 MuxDriver *d = chr->opaque;
451 while (d->prod[m] != d->cons[m] &&
452 d->chr_can_read[m] &&
453 d->chr_can_read[m](d->ext_opaque[m])) {
454 d->chr_read[m](d->ext_opaque[m],
455 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
459 static int mux_chr_can_read(void *opaque)
461 CharDriverState *chr = opaque;
462 MuxDriver *d = chr->opaque;
465 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
467 if (d->chr_can_read[m])
468 return d->chr_can_read[m](d->ext_opaque[m]);
472 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
474 CharDriverState *chr = opaque;
475 MuxDriver *d = chr->opaque;
479 mux_chr_accept_input (opaque);
481 for(i = 0; i < size; i++)
482 if (mux_proc_byte(chr, d, buf[i])) {
483 if (d->prod[m] == d->cons[m] &&
484 d->chr_can_read[m] &&
485 d->chr_can_read[m](d->ext_opaque[m]))
486 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
488 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
492 static void mux_chr_event(void *opaque, int event)
494 CharDriverState *chr = opaque;
495 MuxDriver *d = chr->opaque;
498 /* Send the event to all registered listeners */
499 for (i = 0; i < d->mux_cnt; i++)
500 mux_chr_send_event(d, i, event);
503 static void mux_chr_update_read_handler(CharDriverState *chr)
505 MuxDriver *d = chr->opaque;
507 if (d->mux_cnt >= MAX_MUX) {
508 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
511 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
512 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
513 d->chr_read[d->mux_cnt] = chr->chr_read;
514 d->chr_event[d->mux_cnt] = chr->chr_event;
515 /* Fix up the real driver with mux routines */
516 if (d->mux_cnt == 0) {
517 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
520 if (d->focus != -1) {
521 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
523 d->focus = d->mux_cnt;
525 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
528 static bool muxes_realized;
531 * Called after processing of default and command-line-specified
532 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
533 * to a mux chardev. This is done here to ensure that
534 * output/prompts/banners are only displayed for the FE that has
535 * focus when initial command-line processing/machine init is
538 * After this point, any new FE attached to any new or existing
539 * mux will receive CHR_EVENT_OPENED notifications for the BE
542 static void muxes_realize_done(Notifier *notifier, void *unused)
544 CharDriverState *chr;
546 QTAILQ_FOREACH(chr, &chardevs, next) {
548 MuxDriver *d = chr->opaque;
551 /* send OPENED to all already-attached FEs */
552 for (i = 0; i < d->mux_cnt; i++) {
553 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
555 /* mark mux as OPENED so any new FEs will immediately receive
558 qemu_chr_be_generic_open(chr);
561 muxes_realized = true;
564 static Notifier muxes_realize_notify = {
565 .notify = muxes_realize_done,
568 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
570 CharDriverState *chr;
573 chr = g_malloc0(sizeof(CharDriverState));
574 d = g_malloc0(sizeof(MuxDriver));
579 chr->chr_write = mux_chr_write;
580 chr->chr_update_read_handler = mux_chr_update_read_handler;
581 chr->chr_accept_input = mux_chr_accept_input;
582 /* Frontend guest-open / -close notification is not support with muxes */
583 chr->chr_set_fe_open = NULL;
584 /* only default to opened state if we've realized the initial
587 chr->explicit_be_open = muxes_realized ? 0 : 1;
595 int send_all(int fd, const void *buf, int len1)
601 ret = send(fd, buf, len, 0);
603 errno = WSAGetLastError();
604 if (errno != WSAEWOULDBLOCK) {
607 } else if (ret == 0) {
619 int send_all(int fd, const void *_buf, int len1)
622 const uint8_t *buf = _buf;
626 ret = write(fd, buf, len);
628 if (errno != EINTR && errno != EAGAIN)
630 } else if (ret == 0) {
640 int recv_all(int fd, void *_buf, int len1, bool single_read)
646 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
648 if (errno != EINTR && errno != EAGAIN) {
665 typedef struct IOWatchPoll
672 IOCanReadHandler *fd_can_read;
677 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
679 return container_of(source, IOWatchPoll, parent);
682 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
684 IOWatchPoll *iwp = io_watch_poll_from_source(source);
685 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
686 bool was_active = iwp->src != NULL;
687 if (was_active == now_active) {
692 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
693 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
694 g_source_attach(iwp->src, NULL);
696 g_source_destroy(iwp->src);
697 g_source_unref(iwp->src);
703 static gboolean io_watch_poll_check(GSource *source)
708 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
714 static void io_watch_poll_finalize(GSource *source)
716 /* Due to a glib bug, removing the last reference to a source
717 * inside a finalize callback causes recursive locking (and a
718 * deadlock). This is not a problem inside other callbacks,
719 * including dispatch callbacks, so we call io_remove_watch_poll
720 * to remove this source. At this point, iwp->src must
721 * be NULL, or we would leak it.
723 * This would be solved much more elegantly by child sources,
724 * but we support older glib versions that do not have them.
726 IOWatchPoll *iwp = io_watch_poll_from_source(source);
727 assert(iwp->src == NULL);
730 static GSourceFuncs io_watch_poll_funcs = {
731 .prepare = io_watch_poll_prepare,
732 .check = io_watch_poll_check,
733 .dispatch = io_watch_poll_dispatch,
734 .finalize = io_watch_poll_finalize,
737 /* Can only be used for read */
738 static guint io_add_watch_poll(GIOChannel *channel,
739 IOCanReadHandler *fd_can_read,
746 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
747 iwp->fd_can_read = fd_can_read;
748 iwp->opaque = user_data;
749 iwp->channel = channel;
750 iwp->fd_read = (GSourceFunc) fd_read;
753 tag = g_source_attach(&iwp->parent, NULL);
754 g_source_unref(&iwp->parent);
758 static void io_remove_watch_poll(guint tag)
763 g_return_if_fail (tag > 0);
765 source = g_main_context_find_source_by_id(NULL, tag);
766 g_return_if_fail (source != NULL);
768 iwp = io_watch_poll_from_source(source);
770 g_source_destroy(iwp->src);
771 g_source_unref(iwp->src);
774 g_source_destroy(&iwp->parent);
777 static void remove_fd_in_watch(CharDriverState *chr)
779 if (chr->fd_in_tag) {
780 io_remove_watch_poll(chr->fd_in_tag);
786 static GIOChannel *io_channel_from_fd(int fd)
794 chan = g_io_channel_unix_new(fd);
796 g_io_channel_set_encoding(chan, NULL, NULL);
797 g_io_channel_set_buffered(chan, FALSE);
803 static GIOChannel *io_channel_from_socket(int fd)
812 chan = g_io_channel_win32_new_socket(fd);
814 chan = g_io_channel_unix_new(fd);
817 g_io_channel_set_encoding(chan, NULL, NULL);
818 g_io_channel_set_buffered(chan, FALSE);
823 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
826 GIOStatus status = G_IO_STATUS_NORMAL;
828 while (offset < len && status == G_IO_STATUS_NORMAL) {
829 gsize bytes_written = 0;
831 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
832 &bytes_written, NULL);
833 offset += bytes_written;
840 case G_IO_STATUS_NORMAL:
843 case G_IO_STATUS_AGAIN:
855 typedef struct FDCharDriver {
856 CharDriverState *chr;
857 GIOChannel *fd_in, *fd_out;
859 QTAILQ_ENTRY(FDCharDriver) node;
862 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
864 FDCharDriver *s = chr->opaque;
866 return io_channel_send(s->fd_out, buf, len);
869 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
871 CharDriverState *chr = opaque;
872 FDCharDriver *s = chr->opaque;
874 uint8_t buf[READ_BUF_LEN];
879 if (len > s->max_size) {
886 status = g_io_channel_read_chars(chan, (gchar *)buf,
887 len, &bytes_read, NULL);
888 if (status == G_IO_STATUS_EOF) {
889 remove_fd_in_watch(chr);
890 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
893 if (status == G_IO_STATUS_NORMAL) {
894 qemu_chr_be_write(chr, buf, bytes_read);
900 static int fd_chr_read_poll(void *opaque)
902 CharDriverState *chr = opaque;
903 FDCharDriver *s = chr->opaque;
905 s->max_size = qemu_chr_be_can_write(chr);
909 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
911 FDCharDriver *s = chr->opaque;
912 return g_io_create_watch(s->fd_out, cond);
915 static void fd_chr_update_read_handler(CharDriverState *chr)
917 FDCharDriver *s = chr->opaque;
919 remove_fd_in_watch(chr);
921 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
926 static void fd_chr_close(struct CharDriverState *chr)
928 FDCharDriver *s = chr->opaque;
930 remove_fd_in_watch(chr);
932 g_io_channel_unref(s->fd_in);
935 g_io_channel_unref(s->fd_out);
939 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
942 /* open a character device to a unix fd */
943 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
945 CharDriverState *chr;
948 chr = g_malloc0(sizeof(CharDriverState));
949 s = g_malloc0(sizeof(FDCharDriver));
950 s->fd_in = io_channel_from_fd(fd_in);
951 s->fd_out = io_channel_from_fd(fd_out);
952 fcntl(fd_out, F_SETFL, O_NONBLOCK);
955 chr->chr_add_watch = fd_chr_add_watch;
956 chr->chr_write = fd_chr_write;
957 chr->chr_update_read_handler = fd_chr_update_read_handler;
958 chr->chr_close = fd_chr_close;
963 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
966 char filename_in[256], filename_out[256];
967 const char *filename = opts->device;
969 if (filename == NULL) {
970 fprintf(stderr, "chardev: pipe: no filename given\n");
974 snprintf(filename_in, 256, "%s.in", filename);
975 snprintf(filename_out, 256, "%s.out", filename);
976 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
977 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
978 if (fd_in < 0 || fd_out < 0) {
983 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
988 return qemu_chr_open_fd(fd_in, fd_out);
991 /* init terminal so that we can grab keys */
992 static struct termios oldtty;
993 static int old_fd0_flags;
994 static bool stdio_allow_signal;
996 static void term_exit(void)
998 tcsetattr (0, TCSANOW, &oldtty);
999 fcntl(0, F_SETFL, old_fd0_flags);
1002 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
1008 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1009 |INLCR|IGNCR|ICRNL|IXON);
1010 tty.c_oflag |= OPOST;
1011 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1012 tty.c_cflag &= ~(CSIZE|PARENB);
1015 tty.c_cc[VTIME] = 0;
1017 if (!stdio_allow_signal)
1018 tty.c_lflag &= ~ISIG;
1020 tcsetattr (0, TCSANOW, &tty);
1023 static void qemu_chr_close_stdio(struct CharDriverState *chr)
1029 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
1031 CharDriverState *chr;
1033 if (is_daemonized()) {
1034 error_report("cannot use stdio with -daemonize");
1037 old_fd0_flags = fcntl(0, F_GETFL);
1038 tcgetattr (0, &oldtty);
1039 fcntl(0, F_SETFL, O_NONBLOCK);
1042 chr = qemu_chr_open_fd(0, 1);
1043 chr->chr_close = qemu_chr_close_stdio;
1044 chr->chr_set_echo = qemu_chr_set_echo_stdio;
1045 if (opts->has_signal) {
1046 stdio_allow_signal = opts->signal;
1048 qemu_chr_fe_set_echo(chr, false);
1053 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1054 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1055 || defined(__GLIBC__)
1057 #define HAVE_CHARDEV_TTY 1
1066 static void pty_chr_update_read_handler(CharDriverState *chr);
1067 static void pty_chr_state(CharDriverState *chr, int connected);
1069 static gboolean pty_chr_timer(gpointer opaque)
1071 struct CharDriverState *chr = opaque;
1072 PtyCharDriver *s = chr->opaque;
1075 if (!s->connected) {
1077 pty_chr_update_read_handler(chr);
1082 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1084 PtyCharDriver *s = chr->opaque;
1087 g_source_remove(s->timer_tag);
1092 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1094 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1098 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1100 PtyCharDriver *s = chr->opaque;
1102 if (!s->connected) {
1103 /* guest sends data, check for (re-)connect */
1104 pty_chr_update_read_handler(chr);
1107 return io_channel_send(s->fd, buf, len);
1110 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1112 PtyCharDriver *s = chr->opaque;
1113 return g_io_create_watch(s->fd, cond);
1116 static int pty_chr_read_poll(void *opaque)
1118 CharDriverState *chr = opaque;
1119 PtyCharDriver *s = chr->opaque;
1121 s->read_bytes = qemu_chr_be_can_write(chr);
1122 return s->read_bytes;
1125 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1127 CharDriverState *chr = opaque;
1128 PtyCharDriver *s = chr->opaque;
1130 uint8_t buf[READ_BUF_LEN];
1134 if (len > s->read_bytes)
1135 len = s->read_bytes;
1139 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1140 if (status != G_IO_STATUS_NORMAL) {
1141 pty_chr_state(chr, 0);
1144 pty_chr_state(chr, 1);
1145 qemu_chr_be_write(chr, buf, size);
1150 static void pty_chr_update_read_handler(CharDriverState *chr)
1152 PtyCharDriver *s = chr->opaque;
1155 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1156 pfd.events = G_IO_OUT;
1159 if (pfd.revents & G_IO_HUP) {
1160 pty_chr_state(chr, 0);
1162 pty_chr_state(chr, 1);
1166 static void pty_chr_state(CharDriverState *chr, int connected)
1168 PtyCharDriver *s = chr->opaque;
1171 remove_fd_in_watch(chr);
1173 /* (re-)connect poll interval for idle guests: once per second.
1174 * We check more frequently in case the guests sends data to
1175 * the virtual device linked to our pty. */
1176 pty_chr_rearm_timer(chr, 1000);
1179 g_source_remove(s->timer_tag);
1182 if (!s->connected) {
1184 qemu_chr_be_generic_open(chr);
1186 if (!chr->fd_in_tag) {
1187 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1193 static void pty_chr_close(struct CharDriverState *chr)
1195 PtyCharDriver *s = chr->opaque;
1198 remove_fd_in_watch(chr);
1199 fd = g_io_channel_unix_get_fd(s->fd);
1200 g_io_channel_unref(s->fd);
1203 g_source_remove(s->timer_tag);
1207 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1210 static CharDriverState *qemu_chr_open_pty(const char *id,
1213 CharDriverState *chr;
1215 int master_fd, slave_fd;
1216 char pty_name[PATH_MAX];
1218 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1219 if (master_fd < 0) {
1225 chr = g_malloc0(sizeof(CharDriverState));
1227 chr->filename = g_strdup_printf("pty:%s", pty_name);
1228 ret->pty = g_strdup(pty_name);
1229 ret->has_pty = true;
1231 fprintf(stderr, "char device redirected to %s (label %s)\n",
1234 s = g_malloc0(sizeof(PtyCharDriver));
1236 chr->chr_write = pty_chr_write;
1237 chr->chr_update_read_handler = pty_chr_update_read_handler;
1238 chr->chr_close = pty_chr_close;
1239 chr->chr_add_watch = pty_chr_add_watch;
1240 chr->explicit_be_open = true;
1242 s->fd = io_channel_from_fd(master_fd);
1248 static void tty_serial_init(int fd, int speed,
1249 int parity, int data_bits, int stop_bits)
1255 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1256 speed, parity, data_bits, stop_bits);
1258 tcgetattr (fd, &tty);
1260 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1261 speed = speed * 10 / 11;
1278 /* Non-Posix values follow. They may be unsupported on some systems. */
1280 check_speed(115200);
1282 check_speed(230400);
1285 check_speed(460800);
1288 check_speed(500000);
1291 check_speed(576000);
1294 check_speed(921600);
1297 check_speed(1000000);
1300 check_speed(1152000);
1303 check_speed(1500000);
1306 check_speed(2000000);
1309 check_speed(2500000);
1312 check_speed(3000000);
1315 check_speed(3500000);
1318 check_speed(4000000);
1323 cfsetispeed(&tty, spd);
1324 cfsetospeed(&tty, spd);
1326 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1327 |INLCR|IGNCR|ICRNL|IXON);
1328 tty.c_oflag |= OPOST;
1329 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1330 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1351 tty.c_cflag |= PARENB;
1354 tty.c_cflag |= PARENB | PARODD;
1358 tty.c_cflag |= CSTOPB;
1360 tcsetattr (fd, TCSANOW, &tty);
1363 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1365 FDCharDriver *s = chr->opaque;
1368 case CHR_IOCTL_SERIAL_SET_PARAMS:
1370 QEMUSerialSetParams *ssp = arg;
1371 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1372 ssp->speed, ssp->parity,
1373 ssp->data_bits, ssp->stop_bits);
1376 case CHR_IOCTL_SERIAL_SET_BREAK:
1378 int enable = *(int *)arg;
1380 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1384 case CHR_IOCTL_SERIAL_GET_TIOCM:
1387 int *targ = (int *)arg;
1388 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1390 if (sarg & TIOCM_CTS)
1391 *targ |= CHR_TIOCM_CTS;
1392 if (sarg & TIOCM_CAR)
1393 *targ |= CHR_TIOCM_CAR;
1394 if (sarg & TIOCM_DSR)
1395 *targ |= CHR_TIOCM_DSR;
1396 if (sarg & TIOCM_RI)
1397 *targ |= CHR_TIOCM_RI;
1398 if (sarg & TIOCM_DTR)
1399 *targ |= CHR_TIOCM_DTR;
1400 if (sarg & TIOCM_RTS)
1401 *targ |= CHR_TIOCM_RTS;
1404 case CHR_IOCTL_SERIAL_SET_TIOCM:
1406 int sarg = *(int *)arg;
1408 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1409 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1410 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1411 if (sarg & CHR_TIOCM_CTS)
1413 if (sarg & CHR_TIOCM_CAR)
1415 if (sarg & CHR_TIOCM_DSR)
1417 if (sarg & CHR_TIOCM_RI)
1419 if (sarg & CHR_TIOCM_DTR)
1421 if (sarg & CHR_TIOCM_RTS)
1423 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1432 static void qemu_chr_close_tty(CharDriverState *chr)
1434 FDCharDriver *s = chr->opaque;
1438 fd = g_io_channel_unix_get_fd(s->fd_in);
1448 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1450 CharDriverState *chr;
1452 tty_serial_init(fd, 115200, 'N', 8, 1);
1453 chr = qemu_chr_open_fd(fd, fd);
1454 chr->chr_ioctl = tty_serial_ioctl;
1455 chr->chr_close = qemu_chr_close_tty;
1458 #endif /* __linux__ || __sun__ */
1460 #if defined(__linux__)
1462 #define HAVE_CHARDEV_PARPORT 1
1467 } ParallelCharDriver;
1469 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1471 if (s->mode != mode) {
1473 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1480 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1482 ParallelCharDriver *drv = chr->opaque;
1487 case CHR_IOCTL_PP_READ_DATA:
1488 if (ioctl(fd, PPRDATA, &b) < 0)
1490 *(uint8_t *)arg = b;
1492 case CHR_IOCTL_PP_WRITE_DATA:
1493 b = *(uint8_t *)arg;
1494 if (ioctl(fd, PPWDATA, &b) < 0)
1497 case CHR_IOCTL_PP_READ_CONTROL:
1498 if (ioctl(fd, PPRCONTROL, &b) < 0)
1500 /* Linux gives only the lowest bits, and no way to know data
1501 direction! For better compatibility set the fixed upper
1503 *(uint8_t *)arg = b | 0xc0;
1505 case CHR_IOCTL_PP_WRITE_CONTROL:
1506 b = *(uint8_t *)arg;
1507 if (ioctl(fd, PPWCONTROL, &b) < 0)
1510 case CHR_IOCTL_PP_READ_STATUS:
1511 if (ioctl(fd, PPRSTATUS, &b) < 0)
1513 *(uint8_t *)arg = b;
1515 case CHR_IOCTL_PP_DATA_DIR:
1516 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1519 case CHR_IOCTL_PP_EPP_READ_ADDR:
1520 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1521 struct ParallelIOArg *parg = arg;
1522 int n = read(fd, parg->buffer, parg->count);
1523 if (n != parg->count) {
1528 case CHR_IOCTL_PP_EPP_READ:
1529 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1530 struct ParallelIOArg *parg = arg;
1531 int n = read(fd, parg->buffer, parg->count);
1532 if (n != parg->count) {
1537 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1538 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1539 struct ParallelIOArg *parg = arg;
1540 int n = write(fd, parg->buffer, parg->count);
1541 if (n != parg->count) {
1546 case CHR_IOCTL_PP_EPP_WRITE:
1547 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1548 struct ParallelIOArg *parg = arg;
1549 int n = write(fd, parg->buffer, parg->count);
1550 if (n != parg->count) {
1561 static void pp_close(CharDriverState *chr)
1563 ParallelCharDriver *drv = chr->opaque;
1566 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1567 ioctl(fd, PPRELEASE);
1570 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1573 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1575 CharDriverState *chr;
1576 ParallelCharDriver *drv;
1578 if (ioctl(fd, PPCLAIM) < 0) {
1583 drv = g_malloc0(sizeof(ParallelCharDriver));
1585 drv->mode = IEEE1284_MODE_COMPAT;
1587 chr = g_malloc0(sizeof(CharDriverState));
1588 chr->chr_write = null_chr_write;
1589 chr->chr_ioctl = pp_ioctl;
1590 chr->chr_close = pp_close;
1595 #endif /* __linux__ */
1597 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1599 #define HAVE_CHARDEV_PARPORT 1
1601 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1603 int fd = (int)(intptr_t)chr->opaque;
1607 case CHR_IOCTL_PP_READ_DATA:
1608 if (ioctl(fd, PPIGDATA, &b) < 0)
1610 *(uint8_t *)arg = b;
1612 case CHR_IOCTL_PP_WRITE_DATA:
1613 b = *(uint8_t *)arg;
1614 if (ioctl(fd, PPISDATA, &b) < 0)
1617 case CHR_IOCTL_PP_READ_CONTROL:
1618 if (ioctl(fd, PPIGCTRL, &b) < 0)
1620 *(uint8_t *)arg = b;
1622 case CHR_IOCTL_PP_WRITE_CONTROL:
1623 b = *(uint8_t *)arg;
1624 if (ioctl(fd, PPISCTRL, &b) < 0)
1627 case CHR_IOCTL_PP_READ_STATUS:
1628 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1630 *(uint8_t *)arg = b;
1638 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1640 CharDriverState *chr;
1642 chr = g_malloc0(sizeof(CharDriverState));
1643 chr->opaque = (void *)(intptr_t)fd;
1644 chr->chr_write = null_chr_write;
1645 chr->chr_ioctl = pp_ioctl;
1646 chr->explicit_be_open = true;
1655 HANDLE hcom, hrecv, hsend;
1656 OVERLAPPED orecv, osend;
1663 HANDLE hInputReadyEvent;
1664 HANDLE hInputDoneEvent;
1665 HANDLE hInputThread;
1666 uint8_t win_stdio_buf;
1667 } WinStdioCharState;
1669 #define NSENDBUF 2048
1670 #define NRECVBUF 2048
1671 #define MAXCONNECT 1
1672 #define NTIMEOUT 5000
1674 static int win_chr_poll(void *opaque);
1675 static int win_chr_pipe_poll(void *opaque);
1677 static void win_chr_close(CharDriverState *chr)
1679 WinCharState *s = chr->opaque;
1682 CloseHandle(s->hsend);
1686 CloseHandle(s->hrecv);
1690 CloseHandle(s->hcom);
1694 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1696 qemu_del_polling_cb(win_chr_poll, chr);
1698 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1701 static int win_chr_init(CharDriverState *chr, const char *filename)
1703 WinCharState *s = chr->opaque;
1705 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1710 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1712 fprintf(stderr, "Failed CreateEvent\n");
1715 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1717 fprintf(stderr, "Failed CreateEvent\n");
1721 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1722 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1723 if (s->hcom == INVALID_HANDLE_VALUE) {
1724 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1729 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1730 fprintf(stderr, "Failed SetupComm\n");
1734 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1735 size = sizeof(COMMCONFIG);
1736 GetDefaultCommConfig(filename, &comcfg, &size);
1737 comcfg.dcb.DCBlength = sizeof(DCB);
1738 CommConfigDialog(filename, NULL, &comcfg);
1740 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1741 fprintf(stderr, "Failed SetCommState\n");
1745 if (!SetCommMask(s->hcom, EV_ERR)) {
1746 fprintf(stderr, "Failed SetCommMask\n");
1750 cto.ReadIntervalTimeout = MAXDWORD;
1751 if (!SetCommTimeouts(s->hcom, &cto)) {
1752 fprintf(stderr, "Failed SetCommTimeouts\n");
1756 if (!ClearCommError(s->hcom, &err, &comstat)) {
1757 fprintf(stderr, "Failed ClearCommError\n");
1760 qemu_add_polling_cb(win_chr_poll, chr);
1768 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1770 WinCharState *s = chr->opaque;
1771 DWORD len, ret, size, err;
1774 ZeroMemory(&s->osend, sizeof(s->osend));
1775 s->osend.hEvent = s->hsend;
1778 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1780 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1782 err = GetLastError();
1783 if (err == ERROR_IO_PENDING) {
1784 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1802 static int win_chr_read_poll(CharDriverState *chr)
1804 WinCharState *s = chr->opaque;
1806 s->max_size = qemu_chr_be_can_write(chr);
1810 static void win_chr_readfile(CharDriverState *chr)
1812 WinCharState *s = chr->opaque;
1814 uint8_t buf[READ_BUF_LEN];
1817 ZeroMemory(&s->orecv, sizeof(s->orecv));
1818 s->orecv.hEvent = s->hrecv;
1819 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1821 err = GetLastError();
1822 if (err == ERROR_IO_PENDING) {
1823 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1828 qemu_chr_be_write(chr, buf, size);
1832 static void win_chr_read(CharDriverState *chr)
1834 WinCharState *s = chr->opaque;
1836 if (s->len > s->max_size)
1837 s->len = s->max_size;
1841 win_chr_readfile(chr);
1844 static int win_chr_poll(void *opaque)
1846 CharDriverState *chr = opaque;
1847 WinCharState *s = chr->opaque;
1851 ClearCommError(s->hcom, &comerr, &status);
1852 if (status.cbInQue > 0) {
1853 s->len = status.cbInQue;
1854 win_chr_read_poll(chr);
1861 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1863 CharDriverState *chr;
1866 chr = g_malloc0(sizeof(CharDriverState));
1867 s = g_malloc0(sizeof(WinCharState));
1869 chr->chr_write = win_chr_write;
1870 chr->chr_close = win_chr_close;
1872 if (win_chr_init(chr, filename) < 0) {
1880 static int win_chr_pipe_poll(void *opaque)
1882 CharDriverState *chr = opaque;
1883 WinCharState *s = chr->opaque;
1886 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1889 win_chr_read_poll(chr);
1896 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1898 WinCharState *s = chr->opaque;
1906 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1908 fprintf(stderr, "Failed CreateEvent\n");
1911 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1913 fprintf(stderr, "Failed CreateEvent\n");
1917 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1918 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1919 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1921 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1922 if (s->hcom == INVALID_HANDLE_VALUE) {
1923 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1928 ZeroMemory(&ov, sizeof(ov));
1929 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1930 ret = ConnectNamedPipe(s->hcom, &ov);
1932 fprintf(stderr, "Failed ConnectNamedPipe\n");
1936 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1938 fprintf(stderr, "Failed GetOverlappedResult\n");
1940 CloseHandle(ov.hEvent);
1947 CloseHandle(ov.hEvent);
1950 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1959 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1961 const char *filename = opts->device;
1962 CharDriverState *chr;
1965 chr = g_malloc0(sizeof(CharDriverState));
1966 s = g_malloc0(sizeof(WinCharState));
1968 chr->chr_write = win_chr_write;
1969 chr->chr_close = win_chr_close;
1971 if (win_chr_pipe_init(chr, filename) < 0) {
1979 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1981 CharDriverState *chr;
1984 chr = g_malloc0(sizeof(CharDriverState));
1985 s = g_malloc0(sizeof(WinCharState));
1988 chr->chr_write = win_chr_write;
1992 static CharDriverState *qemu_chr_open_win_con(void)
1994 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1997 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1999 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2006 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2016 static void win_stdio_wait_func(void *opaque)
2018 CharDriverState *chr = opaque;
2019 WinStdioCharState *stdio = chr->opaque;
2020 INPUT_RECORD buf[4];
2025 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
2028 /* Avoid error storm */
2029 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2033 for (i = 0; i < dwSize; i++) {
2034 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2036 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2038 if (kev->uChar.AsciiChar != 0) {
2039 for (j = 0; j < kev->wRepeatCount; j++) {
2040 if (qemu_chr_be_can_write(chr)) {
2041 uint8_t c = kev->uChar.AsciiChar;
2042 qemu_chr_be_write(chr, &c, 1);
2050 static DWORD WINAPI win_stdio_thread(LPVOID param)
2052 CharDriverState *chr = param;
2053 WinStdioCharState *stdio = chr->opaque;
2059 /* Wait for one byte */
2060 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2062 /* Exit in case of error, continue if nothing read */
2070 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2071 if (stdio->win_stdio_buf == '\r') {
2075 /* Signal the main thread and wait until the byte was eaten */
2076 if (!SetEvent(stdio->hInputReadyEvent)) {
2079 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2085 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2089 static void win_stdio_thread_wait_func(void *opaque)
2091 CharDriverState *chr = opaque;
2092 WinStdioCharState *stdio = chr->opaque;
2094 if (qemu_chr_be_can_write(chr)) {
2095 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2098 SetEvent(stdio->hInputDoneEvent);
2101 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2103 WinStdioCharState *stdio = chr->opaque;
2106 GetConsoleMode(stdio->hStdIn, &dwMode);
2109 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2111 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2115 static void win_stdio_close(CharDriverState *chr)
2117 WinStdioCharState *stdio = chr->opaque;
2119 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2120 CloseHandle(stdio->hInputReadyEvent);
2122 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2123 CloseHandle(stdio->hInputDoneEvent);
2125 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2126 TerminateThread(stdio->hInputThread, 0);
2129 g_free(chr->opaque);
2133 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2135 CharDriverState *chr;
2136 WinStdioCharState *stdio;
2140 chr = g_malloc0(sizeof(CharDriverState));
2141 stdio = g_malloc0(sizeof(WinStdioCharState));
2143 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2144 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2145 fprintf(stderr, "cannot open stdio: invalid handle\n");
2149 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2151 chr->opaque = stdio;
2152 chr->chr_write = win_stdio_write;
2153 chr->chr_close = win_stdio_close;
2156 if (qemu_add_wait_object(stdio->hStdIn,
2157 win_stdio_wait_func, chr)) {
2158 fprintf(stderr, "qemu_add_wait_object: failed\n");
2163 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2164 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2165 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2168 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2169 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2170 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2171 fprintf(stderr, "cannot create stdio thread or event\n");
2174 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2175 win_stdio_thread_wait_func, chr)) {
2176 fprintf(stderr, "qemu_add_wait_object: failed\n");
2180 dwMode |= ENABLE_LINE_INPUT;
2183 /* set the terminal in raw mode */
2184 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2185 dwMode |= ENABLE_PROCESSED_INPUT;
2188 SetConsoleMode(stdio->hStdIn, dwMode);
2190 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2191 qemu_chr_fe_set_echo(chr, false);
2195 #endif /* !_WIN32 */
2198 /***********************************************************/
2199 /* UDP Net console */
2204 uint8_t buf[READ_BUF_LEN];
2210 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2212 NetCharDriver *s = chr->opaque;
2213 gsize bytes_written;
2216 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2217 if (status == G_IO_STATUS_EOF) {
2219 } else if (status != G_IO_STATUS_NORMAL) {
2223 return bytes_written;
2226 static int udp_chr_read_poll(void *opaque)
2228 CharDriverState *chr = opaque;
2229 NetCharDriver *s = chr->opaque;
2231 s->max_size = qemu_chr_be_can_write(chr);
2233 /* If there were any stray characters in the queue process them
2236 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2237 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2239 s->max_size = qemu_chr_be_can_write(chr);
2244 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2246 CharDriverState *chr = opaque;
2247 NetCharDriver *s = chr->opaque;
2248 gsize bytes_read = 0;
2251 if (s->max_size == 0) {
2254 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2256 s->bufcnt = bytes_read;
2257 s->bufptr = s->bufcnt;
2258 if (status != G_IO_STATUS_NORMAL) {
2259 remove_fd_in_watch(chr);
2264 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2265 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2267 s->max_size = qemu_chr_be_can_write(chr);
2273 static void udp_chr_update_read_handler(CharDriverState *chr)
2275 NetCharDriver *s = chr->opaque;
2277 remove_fd_in_watch(chr);
2279 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2284 static void udp_chr_close(CharDriverState *chr)
2286 NetCharDriver *s = chr->opaque;
2288 remove_fd_in_watch(chr);
2290 g_io_channel_unref(s->chan);
2294 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2297 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2299 CharDriverState *chr = NULL;
2300 NetCharDriver *s = NULL;
2302 chr = g_malloc0(sizeof(CharDriverState));
2303 s = g_malloc0(sizeof(NetCharDriver));
2306 s->chan = io_channel_from_socket(s->fd);
2310 chr->chr_write = udp_chr_write;
2311 chr->chr_update_read_handler = udp_chr_update_read_handler;
2312 chr->chr_close = udp_chr_close;
2313 /* be isn't opened until we get a connection */
2314 chr->explicit_be_open = true;
2318 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2320 Error *local_err = NULL;
2323 fd = inet_dgram_opts(opts, &local_err);
2325 qerror_report_err(local_err);
2326 error_free(local_err);
2329 return qemu_chr_open_udp_fd(fd);
2332 /***********************************************************/
2333 /* TCP Net console */
2337 GIOChannel *chan, *listen_chan;
2346 int read_msgfds_num;
2348 int write_msgfds_num;
2351 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2354 static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2356 TCPCharDriver *s = chr->opaque;
2361 size_t fd_size = s->write_msgfds_num * sizeof(int);
2362 char control[CMSG_SPACE(fd_size)];
2363 struct cmsghdr *cmsg;
2365 memset(&msgh, 0, sizeof(msgh));
2366 memset(control, 0, sizeof(control));
2368 /* set the payload */
2369 iov.iov_base = (uint8_t *) buf;
2372 msgh.msg_iov = &iov;
2373 msgh.msg_iovlen = 1;
2375 msgh.msg_control = control;
2376 msgh.msg_controllen = sizeof(control);
2378 cmsg = CMSG_FIRSTHDR(&msgh);
2380 cmsg->cmsg_len = CMSG_LEN(fd_size);
2381 cmsg->cmsg_level = SOL_SOCKET;
2382 cmsg->cmsg_type = SCM_RIGHTS;
2383 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2386 r = sendmsg(s->fd, &msgh, 0);
2387 } while (r < 0 && errno == EINTR);
2389 /* free the written msgfds, no matter what */
2390 if (s->write_msgfds_num) {
2391 g_free(s->write_msgfds);
2392 s->write_msgfds = 0;
2393 s->write_msgfds_num = 0;
2400 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2402 TCPCharDriver *s = chr->opaque;
2405 if (s->is_unix && s->write_msgfds_num) {
2406 return unix_send_msgfds(chr, buf, len);
2410 return io_channel_send(s->chan, buf, len);
2413 /* XXX: indicate an error ? */
2418 static int tcp_chr_read_poll(void *opaque)
2420 CharDriverState *chr = opaque;
2421 TCPCharDriver *s = chr->opaque;
2424 s->max_size = qemu_chr_be_can_write(chr);
2429 #define IAC_BREAK 243
2430 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2432 uint8_t *buf, int *size)
2434 /* Handle any telnet client's basic IAC options to satisfy char by
2435 * char mode with no echo. All IAC options will be removed from
2436 * the buf and the do_telnetopt variable will be used to track the
2437 * state of the width of the IAC information.
2439 * IAC commands come in sets of 3 bytes with the exception of the
2440 * "IAC BREAK" command and the double IAC.
2446 for (i = 0; i < *size; i++) {
2447 if (s->do_telnetopt > 1) {
2448 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2449 /* Double IAC means send an IAC */
2453 s->do_telnetopt = 1;
2455 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2456 /* Handle IAC break commands by sending a serial break */
2457 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2462 if (s->do_telnetopt >= 4) {
2463 s->do_telnetopt = 1;
2466 if ((unsigned char)buf[i] == IAC) {
2467 s->do_telnetopt = 2;
2478 static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
2480 TCPCharDriver *s = chr->opaque;
2481 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2486 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2488 /* Close unused fds */
2489 for (i = to_copy; i < s->read_msgfds_num; i++) {
2490 close(s->read_msgfds[i]);
2493 g_free(s->read_msgfds);
2495 s->read_msgfds_num = 0;
2501 static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2503 TCPCharDriver *s = chr->opaque;
2505 /* clear old pending fd array */
2506 if (s->write_msgfds) {
2507 g_free(s->write_msgfds);
2511 s->write_msgfds = g_malloc(num * sizeof(int));
2512 memcpy(s->write_msgfds, fds, num * sizeof(int));
2515 s->write_msgfds_num = num;
2521 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2523 TCPCharDriver *s = chr->opaque;
2524 struct cmsghdr *cmsg;
2526 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2529 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
2530 cmsg->cmsg_level != SOL_SOCKET ||
2531 cmsg->cmsg_type != SCM_RIGHTS) {
2535 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2541 /* close and clean read_msgfds */
2542 for (i = 0; i < s->read_msgfds_num; i++) {
2543 close(s->read_msgfds[i]);
2546 if (s->read_msgfds_num) {
2547 g_free(s->read_msgfds);
2550 s->read_msgfds_num = fd_size / sizeof(int);
2551 s->read_msgfds = g_malloc(fd_size);
2552 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2554 for (i = 0; i < s->read_msgfds_num; i++) {
2555 int fd = s->read_msgfds[i];
2560 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2563 #ifndef MSG_CMSG_CLOEXEC
2564 qemu_set_cloexec(fd);
2570 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2572 TCPCharDriver *s = chr->opaque;
2573 struct msghdr msg = { NULL, };
2574 struct iovec iov[1];
2576 struct cmsghdr cmsg;
2577 char control[CMSG_SPACE(sizeof(int))];
2582 iov[0].iov_base = buf;
2583 iov[0].iov_len = len;
2587 msg.msg_control = &msg_control;
2588 msg.msg_controllen = sizeof(msg_control);
2590 #ifdef MSG_CMSG_CLOEXEC
2591 flags |= MSG_CMSG_CLOEXEC;
2593 ret = recvmsg(s->fd, &msg, flags);
2594 if (ret > 0 && s->is_unix) {
2595 unix_process_msgfd(chr, &msg);
2601 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2603 TCPCharDriver *s = chr->opaque;
2604 return qemu_recv(s->fd, buf, len, 0);
2608 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2610 TCPCharDriver *s = chr->opaque;
2611 return g_io_create_watch(s->chan, cond);
2614 static void tcp_chr_disconnect(CharDriverState *chr)
2616 TCPCharDriver *s = chr->opaque;
2619 if (s->listen_chan) {
2620 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2621 tcp_chr_accept, chr);
2623 remove_fd_in_watch(chr);
2624 g_io_channel_unref(s->chan);
2628 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2631 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2633 CharDriverState *chr = opaque;
2634 TCPCharDriver *s = chr->opaque;
2635 uint8_t buf[READ_BUF_LEN];
2638 if (!s->connected || s->max_size <= 0) {
2642 if (len > s->max_size)
2644 size = tcp_chr_recv(chr, (void *)buf, len);
2646 /* connection closed */
2647 tcp_chr_disconnect(chr);
2648 } else if (size > 0) {
2649 if (s->do_telnetopt)
2650 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2652 qemu_chr_be_write(chr, buf, size);
2658 static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2660 TCPCharDriver *s = chr->opaque;
2663 if (!s->connected) {
2667 size = tcp_chr_recv(chr, (void *) buf, len);
2669 /* connection closed */
2670 tcp_chr_disconnect(chr);
2677 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2679 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2682 chr->avail_connections = 1;
2689 static gboolean tcp_chr_chan_close(GIOChannel *channel, GIOCondition cond,
2692 CharDriverState *chr = opaque;
2694 if (cond != G_IO_HUP) {
2698 /* connection closed */
2699 tcp_chr_disconnect(chr);
2700 if (chr->fd_hup_tag) {
2701 g_source_remove(chr->fd_hup_tag);
2702 chr->fd_hup_tag = 0;
2708 static void tcp_chr_connect(void *opaque)
2710 CharDriverState *chr = opaque;
2711 TCPCharDriver *s = chr->opaque;
2715 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2717 chr->fd_hup_tag = g_io_add_watch(s->chan, G_IO_HUP, tcp_chr_chan_close,
2720 qemu_chr_be_generic_open(chr);
2723 static void tcp_chr_update_read_handler(CharDriverState *chr)
2725 TCPCharDriver *s = chr->opaque;
2727 remove_fd_in_watch(chr);
2729 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2734 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2735 static void tcp_chr_telnet_init(int fd)
2738 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2739 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2740 send(fd, (char *)buf, 3, 0);
2741 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2742 send(fd, (char *)buf, 3, 0);
2743 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2744 send(fd, (char *)buf, 3, 0);
2745 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2746 send(fd, (char *)buf, 3, 0);
2749 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2751 TCPCharDriver *s = chr->opaque;
2755 qemu_set_nonblock(fd);
2757 socket_set_nodelay(fd);
2759 s->chan = io_channel_from_socket(fd);
2760 if (s->listen_tag) {
2761 g_source_remove(s->listen_tag);
2764 tcp_chr_connect(chr);
2769 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2771 CharDriverState *chr = opaque;
2772 TCPCharDriver *s = chr->opaque;
2773 struct sockaddr_in saddr;
2775 struct sockaddr_un uaddr;
2777 struct sockaddr *addr;
2784 len = sizeof(uaddr);
2785 addr = (struct sockaddr *)&uaddr;
2789 len = sizeof(saddr);
2790 addr = (struct sockaddr *)&saddr;
2792 fd = qemu_accept(s->listen_fd, addr, &len);
2793 if (fd < 0 && errno != EINTR) {
2796 } else if (fd >= 0) {
2797 if (s->do_telnetopt)
2798 tcp_chr_telnet_init(fd);
2802 if (tcp_chr_add_client(chr, fd) < 0)
2808 static void tcp_chr_close(CharDriverState *chr)
2810 TCPCharDriver *s = chr->opaque;
2813 remove_fd_in_watch(chr);
2815 g_io_channel_unref(s->chan);
2819 if (s->listen_fd >= 0) {
2820 if (s->listen_tag) {
2821 g_source_remove(s->listen_tag);
2824 if (s->listen_chan) {
2825 g_io_channel_unref(s->listen_chan);
2827 closesocket(s->listen_fd);
2829 if (s->read_msgfds_num) {
2830 for (i = 0; i < s->read_msgfds_num; i++) {
2831 close(s->read_msgfds[i]);
2833 g_free(s->read_msgfds);
2835 if (s->write_msgfds_num) {
2836 g_free(s->write_msgfds);
2839 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2842 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2843 bool is_listen, bool is_telnet,
2844 bool is_waitconnect,
2847 CharDriverState *chr = NULL;
2848 TCPCharDriver *s = NULL;
2849 char host[NI_MAXHOST], serv[NI_MAXSERV];
2850 const char *left = "", *right = "";
2851 struct sockaddr_storage ss;
2852 socklen_t ss_len = sizeof(ss);
2854 memset(&ss, 0, ss_len);
2855 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2856 error_setg_errno(errp, errno, "getsockname");
2860 chr = g_malloc0(sizeof(CharDriverState));
2861 s = g_malloc0(sizeof(TCPCharDriver));
2867 s->read_msgfds_num = 0;
2868 s->write_msgfds = 0;
2869 s->write_msgfds_num = 0;
2871 chr->filename = g_malloc(256);
2872 switch (ss.ss_family) {
2876 snprintf(chr->filename, 256, "unix:%s%s",
2877 ((struct sockaddr_un *)(&ss))->sun_path,
2878 is_listen ? ",server" : "");
2886 s->do_nodelay = do_nodelay;
2887 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2888 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2889 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2890 is_telnet ? "telnet" : "tcp",
2891 left, host, right, serv,
2892 is_listen ? ",server" : "");
2897 chr->chr_write = tcp_chr_write;
2898 chr->chr_sync_read = tcp_chr_sync_read;
2899 chr->chr_close = tcp_chr_close;
2900 chr->get_msgfds = tcp_get_msgfds;
2901 chr->set_msgfds = tcp_set_msgfds;
2902 chr->chr_add_client = tcp_chr_add_client;
2903 chr->chr_add_watch = tcp_chr_add_watch;
2904 chr->chr_update_read_handler = tcp_chr_update_read_handler;
2905 /* be isn't opened until we get a connection */
2906 chr->explicit_be_open = true;
2910 s->listen_chan = io_channel_from_socket(s->listen_fd);
2911 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2913 s->do_telnetopt = 1;
2918 socket_set_nodelay(fd);
2919 s->chan = io_channel_from_socket(s->fd);
2920 tcp_chr_connect(chr);
2923 if (is_listen && is_waitconnect) {
2924 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2926 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2927 qemu_set_nonblock(s->listen_fd);
2932 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2934 CharDriverState *chr = NULL;
2935 Error *local_err = NULL;
2938 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2939 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2940 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2941 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2942 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2946 fd = unix_listen_opts(opts, &local_err);
2948 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2952 fd = inet_listen_opts(opts, 0, &local_err);
2954 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2961 if (!is_waitconnect)
2962 qemu_set_nonblock(fd);
2964 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2965 is_waitconnect, &local_err);
2974 qerror_report_err(local_err);
2975 error_free(local_err);
2981 g_free(chr->opaque);
2987 /*********************************************************/
2988 /* Ring buffer chardev */
2995 } RingBufCharDriver;
2997 static size_t ringbuf_count(const CharDriverState *chr)
2999 const RingBufCharDriver *d = chr->opaque;
3001 return d->prod - d->cons;
3004 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
3006 RingBufCharDriver *d = chr->opaque;
3009 if (!buf || (len < 0)) {
3013 for (i = 0; i < len; i++ ) {
3014 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3015 if (d->prod - d->cons > d->size) {
3016 d->cons = d->prod - d->size;
3023 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
3025 RingBufCharDriver *d = chr->opaque;
3028 for (i = 0; i < len && d->cons != d->prod; i++) {
3029 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
3035 static void ringbuf_chr_close(struct CharDriverState *chr)
3037 RingBufCharDriver *d = chr->opaque;
3044 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
3047 CharDriverState *chr;
3048 RingBufCharDriver *d;
3050 chr = g_malloc0(sizeof(CharDriverState));
3051 d = g_malloc(sizeof(*d));
3053 d->size = opts->has_size ? opts->size : 65536;
3055 /* The size must be power of 2 */
3056 if (d->size & (d->size - 1)) {
3057 error_setg(errp, "size of ringbuf chardev must be power of two");
3063 d->cbuf = g_malloc0(d->size);
3066 chr->chr_write = ringbuf_chr_write;
3067 chr->chr_close = ringbuf_chr_close;
3077 bool chr_is_ringbuf(const CharDriverState *chr)
3079 return chr->chr_write == ringbuf_chr_write;
3082 void qmp_ringbuf_write(const char *device, const char *data,
3083 bool has_format, enum DataFormat format,
3086 CharDriverState *chr;
3087 const uint8_t *write_data;
3091 chr = qemu_chr_find(device);
3093 error_setg(errp, "Device '%s' not found", device);
3097 if (!chr_is_ringbuf(chr)) {
3098 error_setg(errp,"%s is not a ringbuf device", device);
3102 if (has_format && (format == DATA_FORMAT_BASE64)) {
3103 write_data = g_base64_decode(data, &write_count);
3105 write_data = (uint8_t *)data;
3106 write_count = strlen(data);
3109 ret = ringbuf_chr_write(chr, write_data, write_count);
3111 if (write_data != (uint8_t *)data) {
3112 g_free((void *)write_data);
3116 error_setg(errp, "Failed to write to device %s", device);
3121 char *qmp_ringbuf_read(const char *device, int64_t size,
3122 bool has_format, enum DataFormat format,
3125 CharDriverState *chr;
3130 chr = qemu_chr_find(device);
3132 error_setg(errp, "Device '%s' not found", device);
3136 if (!chr_is_ringbuf(chr)) {
3137 error_setg(errp,"%s is not a ringbuf device", device);
3142 error_setg(errp, "size must be greater than zero");
3146 count = ringbuf_count(chr);
3147 size = size > count ? count : size;
3148 read_data = g_malloc(size + 1);
3150 ringbuf_chr_read(chr, read_data, size);
3152 if (has_format && (format == DATA_FORMAT_BASE64)) {
3153 data = g_base64_encode(read_data, size);
3157 * FIXME should read only complete, valid UTF-8 characters up
3158 * to @size bytes. Invalid sequences should be replaced by a
3159 * suitable replacement character. Except when (and only
3160 * when) ring buffer lost characters since last read, initial
3161 * continuation characters should be dropped.
3163 read_data[size] = 0;
3164 data = (char *)read_data;
3170 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3172 char host[65], port[33], width[8], height[8];
3176 Error *local_err = NULL;
3178 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3180 qerror_report_err(local_err);
3181 error_free(local_err);
3185 if (strstart(filename, "mon:", &p)) {
3187 qemu_opt_set(opts, "mux", "on");
3188 if (strcmp(filename, "stdio") == 0) {
3189 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3190 * but pass it to the guest. Handle this only for compat syntax,
3191 * for -chardev syntax we have special option for this.
3192 * This is what -nographic did, redirecting+muxing serial+monitor
3193 * to stdio causing Ctrl+C to be passed to guest. */
3194 qemu_opt_set(opts, "signal", "off");
3198 if (strcmp(filename, "null") == 0 ||
3199 strcmp(filename, "pty") == 0 ||
3200 strcmp(filename, "msmouse") == 0 ||
3201 strcmp(filename, "braille") == 0 ||
3202 strcmp(filename, "stdio") == 0) {
3203 qemu_opt_set(opts, "backend", filename);
3206 if (strstart(filename, "vc", &p)) {
3207 qemu_opt_set(opts, "backend", "vc");
3209 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
3211 qemu_opt_set(opts, "width", width);
3212 qemu_opt_set(opts, "height", height);
3213 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
3215 qemu_opt_set(opts, "cols", width);
3216 qemu_opt_set(opts, "rows", height);
3223 if (strcmp(filename, "con:") == 0) {
3224 qemu_opt_set(opts, "backend", "console");
3227 if (strstart(filename, "COM", NULL)) {
3228 qemu_opt_set(opts, "backend", "serial");
3229 qemu_opt_set(opts, "path", filename);
3232 if (strstart(filename, "file:", &p)) {
3233 qemu_opt_set(opts, "backend", "file");
3234 qemu_opt_set(opts, "path", p);
3237 if (strstart(filename, "pipe:", &p)) {
3238 qemu_opt_set(opts, "backend", "pipe");
3239 qemu_opt_set(opts, "path", p);
3242 if (strstart(filename, "tcp:", &p) ||
3243 strstart(filename, "telnet:", &p)) {
3244 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3246 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3249 qemu_opt_set(opts, "backend", "socket");
3250 qemu_opt_set(opts, "host", host);
3251 qemu_opt_set(opts, "port", port);
3252 if (p[pos] == ',') {
3253 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3256 if (strstart(filename, "telnet:", &p))
3257 qemu_opt_set(opts, "telnet", "on");
3260 if (strstart(filename, "udp:", &p)) {
3261 qemu_opt_set(opts, "backend", "udp");
3262 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3264 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3268 qemu_opt_set(opts, "host", host);
3269 qemu_opt_set(opts, "port", port);
3270 if (p[pos] == '@') {
3272 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3274 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3278 qemu_opt_set(opts, "localaddr", host);
3279 qemu_opt_set(opts, "localport", port);
3283 if (strstart(filename, "unix:", &p)) {
3284 qemu_opt_set(opts, "backend", "socket");
3285 if (qemu_opts_do_parse(opts, p, "path") != 0)
3289 if (strstart(filename, "/dev/parport", NULL) ||
3290 strstart(filename, "/dev/ppi", NULL)) {
3291 qemu_opt_set(opts, "backend", "parport");
3292 qemu_opt_set(opts, "path", filename);
3295 if (strstart(filename, "/dev/", NULL)) {
3296 qemu_opt_set(opts, "backend", "tty");
3297 qemu_opt_set(opts, "path", filename);
3302 qemu_opts_del(opts);
3306 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3309 const char *path = qemu_opt_get(opts, "path");
3312 error_setg(errp, "chardev: file: no filename given");
3315 backend->file = g_new0(ChardevFile, 1);
3316 backend->file->out = g_strdup(path);
3319 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3322 backend->stdio = g_new0(ChardevStdio, 1);
3323 backend->stdio->has_signal = true;
3324 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3327 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3330 const char *device = qemu_opt_get(opts, "path");
3332 if (device == NULL) {
3333 error_setg(errp, "chardev: serial/tty: no device path given");
3336 backend->serial = g_new0(ChardevHostdev, 1);
3337 backend->serial->device = g_strdup(device);
3340 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3343 const char *device = qemu_opt_get(opts, "path");
3345 if (device == NULL) {
3346 error_setg(errp, "chardev: parallel: no device path given");
3349 backend->parallel = g_new0(ChardevHostdev, 1);
3350 backend->parallel->device = g_strdup(device);
3353 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3356 const char *device = qemu_opt_get(opts, "path");
3358 if (device == NULL) {
3359 error_setg(errp, "chardev: pipe: no device path given");
3362 backend->pipe = g_new0(ChardevHostdev, 1);
3363 backend->pipe->device = g_strdup(device);
3366 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3371 backend->ringbuf = g_new0(ChardevRingbuf, 1);
3373 val = qemu_opt_get_size(opts, "size", 0);
3375 backend->ringbuf->has_size = true;
3376 backend->ringbuf->size = val;
3380 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3383 const char *chardev = qemu_opt_get(opts, "chardev");
3385 if (chardev == NULL) {
3386 error_setg(errp, "chardev: mux: no chardev given");
3389 backend->mux = g_new0(ChardevMux, 1);
3390 backend->mux->chardev = g_strdup(chardev);
3393 typedef struct CharDriver {
3396 CharDriverState *(*open)(QemuOpts *opts);
3397 /* new, qapi-based */
3398 ChardevBackendKind kind;
3399 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3402 static GSList *backends;
3404 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3408 s = g_malloc0(sizeof(*s));
3409 s->name = g_strdup(name);
3412 backends = g_slist_append(backends, s);
3415 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3416 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3420 s = g_malloc0(sizeof(*s));
3421 s->name = g_strdup(name);
3425 backends = g_slist_append(backends, s);
3428 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3429 void (*init)(struct CharDriverState *s),
3432 Error *local_err = NULL;
3434 CharDriverState *chr;
3437 if (qemu_opts_id(opts) == NULL) {
3438 error_setg(errp, "chardev: no id specified");
3442 if (qemu_opt_get(opts, "backend") == NULL) {
3443 error_setg(errp, "chardev: \"%s\" missing backend",
3444 qemu_opts_id(opts));
3447 for (i = backends; i; i = i->next) {
3450 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3455 error_setg(errp, "chardev: backend \"%s\" not found",
3456 qemu_opt_get(opts, "backend"));
3461 /* using new, qapi init */
3462 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3463 ChardevReturn *ret = NULL;
3464 const char *id = qemu_opts_id(opts);
3467 if (qemu_opt_get_bool(opts, "mux", 0)) {
3468 bid = g_strdup_printf("%s-base", id);
3472 backend->kind = cd->kind;
3474 cd->parse(opts, backend, &local_err);
3476 error_propagate(errp, local_err);
3480 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3486 qapi_free_ChardevBackend(backend);
3487 qapi_free_ChardevReturn(ret);
3488 backend = g_new0(ChardevBackend, 1);
3489 backend->mux = g_new0(ChardevMux, 1);
3490 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3491 backend->mux->chardev = g_strdup(bid);
3492 ret = qmp_chardev_add(id, backend, errp);
3494 chr = qemu_chr_find(bid);
3495 qemu_chr_delete(chr);
3501 chr = qemu_chr_find(id);
3505 qapi_free_ChardevBackend(backend);
3506 qapi_free_ChardevReturn(ret);
3511 chr = cd->open(opts);
3513 error_setg(errp, "chardev: opening backend \"%s\" failed",
3514 qemu_opt_get(opts, "backend"));
3519 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3521 /* if we didn't create the chardev via qmp_chardev_add, we
3522 * need to send the OPENED event here
3524 if (!chr->explicit_be_open) {
3525 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3527 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3529 if (qemu_opt_get_bool(opts, "mux", 0)) {
3530 CharDriverState *base = chr;
3531 int len = strlen(qemu_opts_id(opts)) + 6;
3532 base->label = g_malloc(len);
3533 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3534 chr = qemu_chr_open_mux(base);
3535 chr->filename = base->filename;
3536 chr->avail_connections = MAX_MUX;
3537 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3539 chr->avail_connections = 1;
3541 chr->label = g_strdup(qemu_opts_id(opts));
3546 qemu_opts_del(opts);
3550 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3553 CharDriverState *chr;
3557 if (strstart(filename, "chardev:", &p)) {
3558 return qemu_chr_find(p);
3561 opts = qemu_chr_parse_compat(label, filename);
3565 chr = qemu_chr_new_from_opts(opts, init, &err);
3567 error_report("%s", error_get_pretty(err));
3570 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3571 qemu_chr_fe_claim_no_fail(chr);
3572 monitor_init(chr, MONITOR_USE_READLINE);
3577 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3579 if (chr->chr_set_echo) {
3580 chr->chr_set_echo(chr, echo);
3584 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3586 if (chr->fe_open == fe_open) {
3589 chr->fe_open = fe_open;
3590 if (chr->chr_set_fe_open) {
3591 chr->chr_set_fe_open(chr, fe_open);
3595 void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3597 if (chr->chr_fe_event) {
3598 chr->chr_fe_event(chr, event);
3602 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3603 GIOFunc func, void *user_data)
3608 if (s->chr_add_watch == NULL) {
3612 src = s->chr_add_watch(s, cond);
3613 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3614 tag = g_source_attach(src, NULL);
3615 g_source_unref(src);
3620 int qemu_chr_fe_claim(CharDriverState *s)
3622 if (s->avail_connections < 1) {
3625 s->avail_connections--;
3629 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3631 if (qemu_chr_fe_claim(s) != 0) {
3632 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3633 __func__, s->label);
3638 void qemu_chr_fe_release(CharDriverState *s)
3640 s->avail_connections++;
3643 void qemu_chr_delete(CharDriverState *chr)
3645 QTAILQ_REMOVE(&chardevs, chr, next);
3646 if (chr->chr_close) {
3647 chr->chr_close(chr);
3649 g_free(chr->filename);
3652 qemu_opts_del(chr->opts);
3657 ChardevInfoList *qmp_query_chardev(Error **errp)
3659 ChardevInfoList *chr_list = NULL;
3660 CharDriverState *chr;
3662 QTAILQ_FOREACH(chr, &chardevs, next) {
3663 ChardevInfoList *info = g_malloc0(sizeof(*info));
3664 info->value = g_malloc0(sizeof(*info->value));
3665 info->value->label = g_strdup(chr->label);
3666 info->value->filename = g_strdup(chr->filename);
3668 info->next = chr_list;
3675 ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3677 ChardevBackendInfoList *backend_list = NULL;
3678 CharDriver *c = NULL;
3681 for (i = backends; i; i = i->next) {
3682 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3684 info->value = g_malloc0(sizeof(*info->value));
3685 info->value->name = g_strdup(c->name);
3687 info->next = backend_list;
3688 backend_list = info;
3691 return backend_list;
3694 CharDriverState *qemu_chr_find(const char *name)
3696 CharDriverState *chr;
3698 QTAILQ_FOREACH(chr, &chardevs, next) {
3699 if (strcmp(chr->label, name) != 0)
3706 /* Get a character (serial) device interface. */
3707 CharDriverState *qemu_char_get_next_serial(void)
3709 static int next_serial;
3710 CharDriverState *chr;
3712 /* FIXME: This function needs to go away: use chardev properties! */
3714 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3715 chr = serial_hds[next_serial++];
3716 qemu_chr_fe_claim_no_fail(chr);
3722 QemuOptsList qemu_chardev_opts = {
3724 .implied_opt_name = "backend",
3725 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3729 .type = QEMU_OPT_STRING,
3732 .type = QEMU_OPT_STRING,
3735 .type = QEMU_OPT_STRING,
3738 .type = QEMU_OPT_STRING,
3740 .name = "localaddr",
3741 .type = QEMU_OPT_STRING,
3743 .name = "localport",
3744 .type = QEMU_OPT_STRING,
3747 .type = QEMU_OPT_NUMBER,
3750 .type = QEMU_OPT_BOOL,
3753 .type = QEMU_OPT_BOOL,
3756 .type = QEMU_OPT_BOOL,
3759 .type = QEMU_OPT_BOOL,
3762 .type = QEMU_OPT_BOOL,
3765 .type = QEMU_OPT_BOOL,
3768 .type = QEMU_OPT_NUMBER,
3771 .type = QEMU_OPT_NUMBER,
3774 .type = QEMU_OPT_NUMBER,
3777 .type = QEMU_OPT_NUMBER,
3780 .type = QEMU_OPT_BOOL,
3783 .type = QEMU_OPT_BOOL,
3786 .type = QEMU_OPT_STRING,
3789 .type = QEMU_OPT_NUMBER,
3792 .type = QEMU_OPT_SIZE,
3795 .type = QEMU_OPT_STRING,
3797 { /* end of list */ }
3803 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3808 error_setg(errp, "input file not supported");
3812 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3813 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3814 if (out == INVALID_HANDLE_VALUE) {
3815 error_setg(errp, "open %s failed", file->out);
3818 return qemu_chr_open_win_file(out);
3821 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3824 return qemu_chr_open_win_path(serial->device);
3827 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3830 error_setg(errp, "character device backend type 'parallel' not supported");
3836 static int qmp_chardev_open_file_source(char *src, int flags,
3841 TFR(fd = qemu_open(src, flags, 0666));
3843 error_setg_file_open(errp, errno, src);
3848 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3850 int flags, in = -1, out;
3852 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3853 out = qmp_chardev_open_file_source(file->out, flags, errp);
3860 in = qmp_chardev_open_file_source(file->in, flags, errp);
3867 return qemu_chr_open_fd(in, out);
3870 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3873 #ifdef HAVE_CHARDEV_TTY
3876 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3880 qemu_set_nonblock(fd);
3881 return qemu_chr_open_tty_fd(fd);
3883 error_setg(errp, "character device backend type 'serial' not supported");
3888 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3891 #ifdef HAVE_CHARDEV_PARPORT
3894 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3898 return qemu_chr_open_pp_fd(fd);
3900 error_setg(errp, "character device backend type 'parallel' not supported");
3907 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3910 SocketAddress *addr = sock->addr;
3911 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3912 bool is_listen = sock->has_server ? sock->server : true;
3913 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3914 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3918 fd = socket_listen(addr, errp);
3920 fd = socket_connect(addr, errp, NULL, NULL);
3925 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3926 is_telnet, is_waitconnect, errp);
3929 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3934 fd = socket_dgram(udp->remote, udp->local, errp);
3938 return qemu_chr_open_udp_fd(fd);
3941 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3944 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3945 CharDriverState *base, *chr = NULL;
3947 chr = qemu_chr_find(id);
3949 error_setg(errp, "Chardev '%s' already exists", id);
3954 switch (backend->kind) {
3955 case CHARDEV_BACKEND_KIND_FILE:
3956 chr = qmp_chardev_open_file(backend->file, errp);
3958 case CHARDEV_BACKEND_KIND_SERIAL:
3959 chr = qmp_chardev_open_serial(backend->serial, errp);
3961 case CHARDEV_BACKEND_KIND_PARALLEL:
3962 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3964 case CHARDEV_BACKEND_KIND_PIPE:
3965 chr = qemu_chr_open_pipe(backend->pipe);
3967 case CHARDEV_BACKEND_KIND_SOCKET:
3968 chr = qmp_chardev_open_socket(backend->socket, errp);
3970 case CHARDEV_BACKEND_KIND_UDP:
3971 chr = qmp_chardev_open_udp(backend->udp, errp);
3973 #ifdef HAVE_CHARDEV_TTY
3974 case CHARDEV_BACKEND_KIND_PTY:
3975 chr = qemu_chr_open_pty(id, ret);
3978 case CHARDEV_BACKEND_KIND_NULL:
3979 chr = qemu_chr_open_null();
3981 case CHARDEV_BACKEND_KIND_MUX:
3982 base = qemu_chr_find(backend->mux->chardev);
3984 error_setg(errp, "mux: base chardev %s not found",
3985 backend->mux->chardev);
3988 chr = qemu_chr_open_mux(base);
3990 case CHARDEV_BACKEND_KIND_MSMOUSE:
3991 chr = qemu_chr_open_msmouse();
3993 #ifdef CONFIG_BRLAPI
3994 case CHARDEV_BACKEND_KIND_BRAILLE:
3995 chr = chr_baum_init();
3998 case CHARDEV_BACKEND_KIND_STDIO:
3999 chr = qemu_chr_open_stdio(backend->stdio);
4002 case CHARDEV_BACKEND_KIND_CONSOLE:
4003 chr = qemu_chr_open_win_con();
4007 case CHARDEV_BACKEND_KIND_SPICEVMC:
4008 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
4010 case CHARDEV_BACKEND_KIND_SPICEPORT:
4011 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
4014 case CHARDEV_BACKEND_KIND_VC:
4015 chr = vc_init(backend->vc);
4017 case CHARDEV_BACKEND_KIND_RINGBUF:
4018 case CHARDEV_BACKEND_KIND_MEMORY:
4019 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
4022 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
4027 * Character backend open hasn't been fully converted to the Error
4028 * API. Some opens fail without setting an error. Set a generic
4030 * TODO full conversion to Error API
4032 if (chr == NULL && errp && !*errp) {
4033 error_setg(errp, "Failed to create chardev");
4036 chr->label = g_strdup(id);
4037 chr->avail_connections =
4038 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
4039 if (!chr->filename) {
4040 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
4042 if (!chr->explicit_be_open) {
4043 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4045 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4053 void qmp_chardev_remove(const char *id, Error **errp)
4055 CharDriverState *chr;
4057 chr = qemu_chr_find(id);
4059 error_setg(errp, "Chardev '%s' not found", id);
4062 if (chr->chr_can_read || chr->chr_read ||
4063 chr->chr_event || chr->handler_opaque) {
4064 error_setg(errp, "Chardev '%s' is busy", id);
4067 qemu_chr_delete(chr);
4070 static void register_types(void)
4072 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
4073 register_char_driver("socket", qemu_chr_open_socket);
4074 register_char_driver("udp", qemu_chr_open_udp);
4075 register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4076 qemu_chr_parse_ringbuf);
4077 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
4078 qemu_chr_parse_file_out);
4079 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
4080 qemu_chr_parse_stdio);
4081 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
4082 qemu_chr_parse_serial);
4083 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
4084 qemu_chr_parse_serial);
4085 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4086 qemu_chr_parse_parallel);
4087 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4088 qemu_chr_parse_parallel);
4089 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
4090 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
4091 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
4092 qemu_chr_parse_pipe);
4093 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
4094 qemu_chr_parse_mux);
4095 /* Bug-compatibility: */
4096 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
4097 qemu_chr_parse_ringbuf);
4098 /* this must be done after machine init, since we register FEs with muxes
4099 * as part of realize functions like serial_isa_realizefn when -nographic
4102 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
4105 type_init(register_types);