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 void qemu_chr_add_handlers(CharDriverState *s,
197 IOCanReadHandler *fd_can_read,
198 IOReadHandler *fd_read,
199 IOEventHandler *fd_event,
204 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
209 s->chr_can_read = fd_can_read;
210 s->chr_read = fd_read;
211 s->chr_event = fd_event;
212 s->handler_opaque = opaque;
213 if (s->chr_update_read_handler)
214 s->chr_update_read_handler(s);
216 if (!s->explicit_fe_open) {
217 qemu_chr_fe_set_open(s, fe_open);
220 /* We're connecting to an already opened device, so let's make sure we
221 also get the open event */
222 if (fe_open && s->be_open) {
223 qemu_chr_be_generic_open(s);
227 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
232 static CharDriverState *qemu_chr_open_null(void)
234 CharDriverState *chr;
236 chr = g_malloc0(sizeof(CharDriverState));
237 chr->chr_write = null_chr_write;
238 chr->explicit_be_open = true;
242 /* MUX driver for serial I/O splitting */
244 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
245 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
247 IOCanReadHandler *chr_can_read[MAX_MUX];
248 IOReadHandler *chr_read[MAX_MUX];
249 IOEventHandler *chr_event[MAX_MUX];
250 void *ext_opaque[MAX_MUX];
251 CharDriverState *drv;
256 /* Intermediate input buffer allows to catch escape sequences even if the
257 currently active device is not accepting any input - but only until it
259 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
264 int64_t timestamps_start;
268 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
270 MuxDriver *d = chr->opaque;
272 if (!d->timestamps) {
273 ret = d->drv->chr_write(d->drv, buf, len);
278 for (i = 0; i < len; i++) {
284 ti = qemu_get_clock_ms(rt_clock);
285 if (d->timestamps_start == -1)
286 d->timestamps_start = ti;
287 ti -= d->timestamps_start;
289 snprintf(buf1, sizeof(buf1),
290 "[%02d:%02d:%02d.%03d] ",
295 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
298 ret += d->drv->chr_write(d->drv, buf+i, 1);
299 if (buf[i] == '\n') {
307 static const char * const mux_help[] = {
308 "% h print this help\n\r",
309 "% x exit emulator\n\r",
310 "% s save disk data back to file (if -snapshot)\n\r",
311 "% t toggle console timestamps\n\r"
312 "% b send break (magic sysrq)\n\r",
313 "% c switch between console and monitor\n\r",
318 int term_escape_char = 0x01; /* ctrl-a is used for escape */
319 static void mux_print_help(CharDriverState *chr)
322 char ebuf[15] = "Escape-Char";
323 char cbuf[50] = "\n\r";
325 if (term_escape_char > 0 && term_escape_char < 26) {
326 snprintf(cbuf, sizeof(cbuf), "\n\r");
327 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
329 snprintf(cbuf, sizeof(cbuf),
330 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
333 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
334 for (i = 0; mux_help[i] != NULL; i++) {
335 for (j=0; mux_help[i][j] != '\0'; j++) {
336 if (mux_help[i][j] == '%')
337 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
339 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
344 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
346 if (d->chr_event[mux_nr])
347 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
350 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
352 if (d->term_got_escape) {
353 d->term_got_escape = 0;
354 if (ch == term_escape_char)
363 const char *term = "QEMU: Terminated\n\r";
364 chr->chr_write(chr,(uint8_t *)term,strlen(term));
372 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
375 /* Switch to the next registered device */
376 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
378 if (d->focus >= d->mux_cnt)
380 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
383 d->timestamps = !d->timestamps;
384 d->timestamps_start = -1;
388 } else if (ch == term_escape_char) {
389 d->term_got_escape = 1;
397 static void mux_chr_accept_input(CharDriverState *chr)
399 MuxDriver *d = chr->opaque;
402 while (d->prod[m] != d->cons[m] &&
403 d->chr_can_read[m] &&
404 d->chr_can_read[m](d->ext_opaque[m])) {
405 d->chr_read[m](d->ext_opaque[m],
406 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
410 static int mux_chr_can_read(void *opaque)
412 CharDriverState *chr = opaque;
413 MuxDriver *d = chr->opaque;
416 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
418 if (d->chr_can_read[m])
419 return d->chr_can_read[m](d->ext_opaque[m]);
423 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
425 CharDriverState *chr = opaque;
426 MuxDriver *d = chr->opaque;
430 mux_chr_accept_input (opaque);
432 for(i = 0; i < size; i++)
433 if (mux_proc_byte(chr, d, buf[i])) {
434 if (d->prod[m] == d->cons[m] &&
435 d->chr_can_read[m] &&
436 d->chr_can_read[m](d->ext_opaque[m]))
437 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
439 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
443 static void mux_chr_event(void *opaque, int event)
445 CharDriverState *chr = opaque;
446 MuxDriver *d = chr->opaque;
449 /* Send the event to all registered listeners */
450 for (i = 0; i < d->mux_cnt; i++)
451 mux_chr_send_event(d, i, event);
454 static void mux_chr_update_read_handler(CharDriverState *chr)
456 MuxDriver *d = chr->opaque;
458 if (d->mux_cnt >= MAX_MUX) {
459 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
462 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
463 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
464 d->chr_read[d->mux_cnt] = chr->chr_read;
465 d->chr_event[d->mux_cnt] = chr->chr_event;
466 /* Fix up the real driver with mux routines */
467 if (d->mux_cnt == 0) {
468 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
471 if (d->focus != -1) {
472 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
474 d->focus = d->mux_cnt;
476 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
479 static bool muxes_realized;
482 * Called after processing of default and command-line-specified
483 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
484 * to a mux chardev. This is done here to ensure that
485 * output/prompts/banners are only displayed for the FE that has
486 * focus when initial command-line processing/machine init is
489 * After this point, any new FE attached to any new or existing
490 * mux will receive CHR_EVENT_OPENED notifications for the BE
493 static void muxes_realize_done(Notifier *notifier, void *unused)
495 CharDriverState *chr;
497 QTAILQ_FOREACH(chr, &chardevs, next) {
499 MuxDriver *d = chr->opaque;
502 /* send OPENED to all already-attached FEs */
503 for (i = 0; i < d->mux_cnt; i++) {
504 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
506 /* mark mux as OPENED so any new FEs will immediately receive
509 qemu_chr_be_generic_open(chr);
512 muxes_realized = true;
515 static Notifier muxes_realize_notify = {
516 .notify = muxes_realize_done,
519 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
521 CharDriverState *chr;
524 chr = g_malloc0(sizeof(CharDriverState));
525 d = g_malloc0(sizeof(MuxDriver));
530 chr->chr_write = mux_chr_write;
531 chr->chr_update_read_handler = mux_chr_update_read_handler;
532 chr->chr_accept_input = mux_chr_accept_input;
533 /* Frontend guest-open / -close notification is not support with muxes */
534 chr->chr_set_fe_open = NULL;
535 /* only default to opened state if we've realized the initial
538 chr->explicit_be_open = muxes_realized ? 0 : 1;
546 int send_all(int fd, const void *buf, int len1)
552 ret = send(fd, buf, len, 0);
554 errno = WSAGetLastError();
555 if (errno != WSAEWOULDBLOCK) {
558 } else if (ret == 0) {
570 int send_all(int fd, const void *_buf, int len1)
573 const uint8_t *buf = _buf;
577 ret = write(fd, buf, len);
579 if (errno != EINTR && errno != EAGAIN)
581 } else if (ret == 0) {
591 int recv_all(int fd, void *_buf, int len1, bool single_read)
597 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
599 if (errno != EINTR && errno != EAGAIN) {
616 typedef struct IOWatchPoll
623 IOCanReadHandler *fd_can_read;
628 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
630 return container_of(source, IOWatchPoll, parent);
633 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
635 IOWatchPoll *iwp = io_watch_poll_from_source(source);
636 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
637 bool was_active = iwp->src != NULL;
638 if (was_active == now_active) {
643 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
644 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
645 g_source_attach(iwp->src, NULL);
647 g_source_destroy(iwp->src);
648 g_source_unref(iwp->src);
654 static gboolean io_watch_poll_check(GSource *source)
659 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
665 static void io_watch_poll_finalize(GSource *source)
667 /* Due to a glib bug, removing the last reference to a source
668 * inside a finalize callback causes recursive locking (and a
669 * deadlock). This is not a problem inside other callbacks,
670 * including dispatch callbacks, so we call io_remove_watch_poll
671 * to remove this source. At this point, iwp->src must
672 * be NULL, or we would leak it.
674 * This would be solved much more elegantly by child sources,
675 * but we support older glib versions that do not have them.
677 IOWatchPoll *iwp = io_watch_poll_from_source(source);
678 assert(iwp->src == NULL);
681 static GSourceFuncs io_watch_poll_funcs = {
682 .prepare = io_watch_poll_prepare,
683 .check = io_watch_poll_check,
684 .dispatch = io_watch_poll_dispatch,
685 .finalize = io_watch_poll_finalize,
688 /* Can only be used for read */
689 static guint io_add_watch_poll(GIOChannel *channel,
690 IOCanReadHandler *fd_can_read,
697 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
698 iwp->fd_can_read = fd_can_read;
699 iwp->opaque = user_data;
700 iwp->channel = channel;
701 iwp->fd_read = (GSourceFunc) fd_read;
704 tag = g_source_attach(&iwp->parent, NULL);
705 g_source_unref(&iwp->parent);
709 static void io_remove_watch_poll(guint tag)
714 g_return_if_fail (tag > 0);
716 source = g_main_context_find_source_by_id(NULL, tag);
717 g_return_if_fail (source != NULL);
719 iwp = io_watch_poll_from_source(source);
721 g_source_destroy(iwp->src);
722 g_source_unref(iwp->src);
725 g_source_destroy(&iwp->parent);
729 static GIOChannel *io_channel_from_fd(int fd)
737 chan = g_io_channel_unix_new(fd);
739 g_io_channel_set_encoding(chan, NULL, NULL);
740 g_io_channel_set_buffered(chan, FALSE);
746 static GIOChannel *io_channel_from_socket(int fd)
755 chan = g_io_channel_win32_new_socket(fd);
757 chan = g_io_channel_unix_new(fd);
760 g_io_channel_set_encoding(chan, NULL, NULL);
761 g_io_channel_set_buffered(chan, FALSE);
766 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
769 GIOStatus status = G_IO_STATUS_NORMAL;
771 while (offset < len && status == G_IO_STATUS_NORMAL) {
772 gsize bytes_written = 0;
774 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
775 &bytes_written, NULL);
776 offset += bytes_written;
783 case G_IO_STATUS_NORMAL:
786 case G_IO_STATUS_AGAIN:
798 typedef struct FDCharDriver {
799 CharDriverState *chr;
800 GIOChannel *fd_in, *fd_out;
803 QTAILQ_ENTRY(FDCharDriver) node;
806 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
808 FDCharDriver *s = chr->opaque;
810 return io_channel_send(s->fd_out, buf, len);
813 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
815 CharDriverState *chr = opaque;
816 FDCharDriver *s = chr->opaque;
818 uint8_t buf[READ_BUF_LEN];
823 if (len > s->max_size) {
830 status = g_io_channel_read_chars(chan, (gchar *)buf,
831 len, &bytes_read, NULL);
832 if (status == G_IO_STATUS_EOF) {
834 io_remove_watch_poll(s->fd_in_tag);
837 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
840 if (status == G_IO_STATUS_NORMAL) {
841 qemu_chr_be_write(chr, buf, bytes_read);
847 static int fd_chr_read_poll(void *opaque)
849 CharDriverState *chr = opaque;
850 FDCharDriver *s = chr->opaque;
852 s->max_size = qemu_chr_be_can_write(chr);
856 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
858 FDCharDriver *s = chr->opaque;
859 return g_io_create_watch(s->fd_out, cond);
862 static void fd_chr_update_read_handler(CharDriverState *chr)
864 FDCharDriver *s = chr->opaque;
867 io_remove_watch_poll(s->fd_in_tag);
872 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
876 static void fd_chr_close(struct CharDriverState *chr)
878 FDCharDriver *s = chr->opaque;
881 io_remove_watch_poll(s->fd_in_tag);
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
1021 static void pty_chr_update_read_handler(CharDriverState *chr);
1022 static void pty_chr_state(CharDriverState *chr, int connected);
1024 static gboolean pty_chr_timer(gpointer opaque)
1026 struct CharDriverState *chr = opaque;
1027 PtyCharDriver *s = chr->opaque;
1030 if (!s->connected) {
1032 pty_chr_update_read_handler(chr);
1037 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1039 PtyCharDriver *s = chr->opaque;
1042 g_source_remove(s->timer_tag);
1047 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1049 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1053 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1055 PtyCharDriver *s = chr->opaque;
1057 if (!s->connected) {
1058 /* guest sends data, check for (re-)connect */
1059 pty_chr_update_read_handler(chr);
1062 return io_channel_send(s->fd, buf, len);
1065 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1067 PtyCharDriver *s = chr->opaque;
1068 return g_io_create_watch(s->fd, cond);
1071 static int pty_chr_read_poll(void *opaque)
1073 CharDriverState *chr = opaque;
1074 PtyCharDriver *s = chr->opaque;
1076 s->read_bytes = qemu_chr_be_can_write(chr);
1077 return s->read_bytes;
1080 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1082 CharDriverState *chr = opaque;
1083 PtyCharDriver *s = chr->opaque;
1085 uint8_t buf[READ_BUF_LEN];
1089 if (len > s->read_bytes)
1090 len = s->read_bytes;
1094 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1095 if (status != G_IO_STATUS_NORMAL) {
1096 pty_chr_state(chr, 0);
1099 pty_chr_state(chr, 1);
1100 qemu_chr_be_write(chr, buf, size);
1105 static void pty_chr_update_read_handler(CharDriverState *chr)
1107 PtyCharDriver *s = chr->opaque;
1110 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1111 pfd.events = G_IO_OUT;
1114 if (pfd.revents & G_IO_HUP) {
1115 pty_chr_state(chr, 0);
1117 pty_chr_state(chr, 1);
1121 static void pty_chr_state(CharDriverState *chr, int connected)
1123 PtyCharDriver *s = chr->opaque;
1127 io_remove_watch_poll(s->fd_tag);
1131 /* (re-)connect poll interval for idle guests: once per second.
1132 * We check more frequently in case the guests sends data to
1133 * the virtual device linked to our pty. */
1134 pty_chr_rearm_timer(chr, 1000);
1137 g_source_remove(s->timer_tag);
1140 if (!s->connected) {
1142 qemu_chr_be_generic_open(chr);
1143 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1149 static void pty_chr_close(struct CharDriverState *chr)
1151 PtyCharDriver *s = chr->opaque;
1155 io_remove_watch_poll(s->fd_tag);
1158 fd = g_io_channel_unix_get_fd(s->fd);
1159 g_io_channel_unref(s->fd);
1162 g_source_remove(s->timer_tag);
1166 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1169 static CharDriverState *qemu_chr_open_pty(const char *id,
1172 CharDriverState *chr;
1174 int master_fd, slave_fd;
1175 char pty_name[PATH_MAX];
1177 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1178 if (master_fd < 0) {
1184 chr = g_malloc0(sizeof(CharDriverState));
1186 chr->filename = g_strdup_printf("pty:%s", pty_name);
1187 ret->pty = g_strdup(pty_name);
1188 ret->has_pty = true;
1190 fprintf(stderr, "char device redirected to %s (label %s)\n",
1193 s = g_malloc0(sizeof(PtyCharDriver));
1195 chr->chr_write = pty_chr_write;
1196 chr->chr_update_read_handler = pty_chr_update_read_handler;
1197 chr->chr_close = pty_chr_close;
1198 chr->chr_add_watch = pty_chr_add_watch;
1199 chr->explicit_be_open = true;
1201 s->fd = io_channel_from_fd(master_fd);
1207 static void tty_serial_init(int fd, int speed,
1208 int parity, int data_bits, int stop_bits)
1214 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1215 speed, parity, data_bits, stop_bits);
1217 tcgetattr (fd, &tty);
1219 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1220 speed = speed * 10 / 11;
1237 /* Non-Posix values follow. They may be unsupported on some systems. */
1239 check_speed(115200);
1241 check_speed(230400);
1244 check_speed(460800);
1247 check_speed(500000);
1250 check_speed(576000);
1253 check_speed(921600);
1256 check_speed(1000000);
1259 check_speed(1152000);
1262 check_speed(1500000);
1265 check_speed(2000000);
1268 check_speed(2500000);
1271 check_speed(3000000);
1274 check_speed(3500000);
1277 check_speed(4000000);
1282 cfsetispeed(&tty, spd);
1283 cfsetospeed(&tty, spd);
1285 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1286 |INLCR|IGNCR|ICRNL|IXON);
1287 tty.c_oflag |= OPOST;
1288 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1289 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1310 tty.c_cflag |= PARENB;
1313 tty.c_cflag |= PARENB | PARODD;
1317 tty.c_cflag |= CSTOPB;
1319 tcsetattr (fd, TCSANOW, &tty);
1322 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1324 FDCharDriver *s = chr->opaque;
1327 case CHR_IOCTL_SERIAL_SET_PARAMS:
1329 QEMUSerialSetParams *ssp = arg;
1330 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1331 ssp->speed, ssp->parity,
1332 ssp->data_bits, ssp->stop_bits);
1335 case CHR_IOCTL_SERIAL_SET_BREAK:
1337 int enable = *(int *)arg;
1339 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1343 case CHR_IOCTL_SERIAL_GET_TIOCM:
1346 int *targ = (int *)arg;
1347 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1349 if (sarg & TIOCM_CTS)
1350 *targ |= CHR_TIOCM_CTS;
1351 if (sarg & TIOCM_CAR)
1352 *targ |= CHR_TIOCM_CAR;
1353 if (sarg & TIOCM_DSR)
1354 *targ |= CHR_TIOCM_DSR;
1355 if (sarg & TIOCM_RI)
1356 *targ |= CHR_TIOCM_RI;
1357 if (sarg & TIOCM_DTR)
1358 *targ |= CHR_TIOCM_DTR;
1359 if (sarg & TIOCM_RTS)
1360 *targ |= CHR_TIOCM_RTS;
1363 case CHR_IOCTL_SERIAL_SET_TIOCM:
1365 int sarg = *(int *)arg;
1367 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1368 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1369 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1370 if (sarg & CHR_TIOCM_CTS)
1372 if (sarg & CHR_TIOCM_CAR)
1374 if (sarg & CHR_TIOCM_DSR)
1376 if (sarg & CHR_TIOCM_RI)
1378 if (sarg & CHR_TIOCM_DTR)
1380 if (sarg & CHR_TIOCM_RTS)
1382 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1391 static void qemu_chr_close_tty(CharDriverState *chr)
1393 FDCharDriver *s = chr->opaque;
1397 fd = g_io_channel_unix_get_fd(s->fd_in);
1407 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1409 CharDriverState *chr;
1411 tty_serial_init(fd, 115200, 'N', 8, 1);
1412 chr = qemu_chr_open_fd(fd, fd);
1413 chr->chr_ioctl = tty_serial_ioctl;
1414 chr->chr_close = qemu_chr_close_tty;
1417 #endif /* __linux__ || __sun__ */
1419 #if defined(__linux__)
1421 #define HAVE_CHARDEV_PARPORT 1
1426 } ParallelCharDriver;
1428 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1430 if (s->mode != mode) {
1432 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1439 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1441 ParallelCharDriver *drv = chr->opaque;
1446 case CHR_IOCTL_PP_READ_DATA:
1447 if (ioctl(fd, PPRDATA, &b) < 0)
1449 *(uint8_t *)arg = b;
1451 case CHR_IOCTL_PP_WRITE_DATA:
1452 b = *(uint8_t *)arg;
1453 if (ioctl(fd, PPWDATA, &b) < 0)
1456 case CHR_IOCTL_PP_READ_CONTROL:
1457 if (ioctl(fd, PPRCONTROL, &b) < 0)
1459 /* Linux gives only the lowest bits, and no way to know data
1460 direction! For better compatibility set the fixed upper
1462 *(uint8_t *)arg = b | 0xc0;
1464 case CHR_IOCTL_PP_WRITE_CONTROL:
1465 b = *(uint8_t *)arg;
1466 if (ioctl(fd, PPWCONTROL, &b) < 0)
1469 case CHR_IOCTL_PP_READ_STATUS:
1470 if (ioctl(fd, PPRSTATUS, &b) < 0)
1472 *(uint8_t *)arg = b;
1474 case CHR_IOCTL_PP_DATA_DIR:
1475 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1478 case CHR_IOCTL_PP_EPP_READ_ADDR:
1479 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1480 struct ParallelIOArg *parg = arg;
1481 int n = read(fd, parg->buffer, parg->count);
1482 if (n != parg->count) {
1487 case CHR_IOCTL_PP_EPP_READ:
1488 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1489 struct ParallelIOArg *parg = arg;
1490 int n = read(fd, parg->buffer, parg->count);
1491 if (n != parg->count) {
1496 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1497 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1498 struct ParallelIOArg *parg = arg;
1499 int n = write(fd, parg->buffer, parg->count);
1500 if (n != parg->count) {
1505 case CHR_IOCTL_PP_EPP_WRITE:
1506 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1507 struct ParallelIOArg *parg = arg;
1508 int n = write(fd, parg->buffer, parg->count);
1509 if (n != parg->count) {
1520 static void pp_close(CharDriverState *chr)
1522 ParallelCharDriver *drv = chr->opaque;
1525 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1526 ioctl(fd, PPRELEASE);
1529 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1532 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1534 CharDriverState *chr;
1535 ParallelCharDriver *drv;
1537 if (ioctl(fd, PPCLAIM) < 0) {
1542 drv = g_malloc0(sizeof(ParallelCharDriver));
1544 drv->mode = IEEE1284_MODE_COMPAT;
1546 chr = g_malloc0(sizeof(CharDriverState));
1547 chr->chr_write = null_chr_write;
1548 chr->chr_ioctl = pp_ioctl;
1549 chr->chr_close = pp_close;
1554 #endif /* __linux__ */
1556 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1558 #define HAVE_CHARDEV_PARPORT 1
1560 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1562 int fd = (int)(intptr_t)chr->opaque;
1566 case CHR_IOCTL_PP_READ_DATA:
1567 if (ioctl(fd, PPIGDATA, &b) < 0)
1569 *(uint8_t *)arg = b;
1571 case CHR_IOCTL_PP_WRITE_DATA:
1572 b = *(uint8_t *)arg;
1573 if (ioctl(fd, PPISDATA, &b) < 0)
1576 case CHR_IOCTL_PP_READ_CONTROL:
1577 if (ioctl(fd, PPIGCTRL, &b) < 0)
1579 *(uint8_t *)arg = b;
1581 case CHR_IOCTL_PP_WRITE_CONTROL:
1582 b = *(uint8_t *)arg;
1583 if (ioctl(fd, PPISCTRL, &b) < 0)
1586 case CHR_IOCTL_PP_READ_STATUS:
1587 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1589 *(uint8_t *)arg = b;
1597 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1599 CharDriverState *chr;
1601 chr = g_malloc0(sizeof(CharDriverState));
1602 chr->opaque = (void *)(intptr_t)fd;
1603 chr->chr_write = null_chr_write;
1604 chr->chr_ioctl = pp_ioctl;
1605 chr->explicit_be_open = true;
1614 HANDLE hcom, hrecv, hsend;
1615 OVERLAPPED orecv, osend;
1622 HANDLE hInputReadyEvent;
1623 HANDLE hInputDoneEvent;
1624 HANDLE hInputThread;
1625 uint8_t win_stdio_buf;
1626 } WinStdioCharState;
1628 #define NSENDBUF 2048
1629 #define NRECVBUF 2048
1630 #define MAXCONNECT 1
1631 #define NTIMEOUT 5000
1633 static int win_chr_poll(void *opaque);
1634 static int win_chr_pipe_poll(void *opaque);
1636 static void win_chr_close(CharDriverState *chr)
1638 WinCharState *s = chr->opaque;
1641 CloseHandle(s->hsend);
1645 CloseHandle(s->hrecv);
1649 CloseHandle(s->hcom);
1653 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1655 qemu_del_polling_cb(win_chr_poll, chr);
1657 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1660 static int win_chr_init(CharDriverState *chr, const char *filename)
1662 WinCharState *s = chr->opaque;
1664 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1669 int open_flags, ret;
1672 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1674 fprintf(stderr, "Failed CreateEvent\n");
1677 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1679 fprintf(stderr, "Failed CreateEvent\n");
1683 s->hcom = CreateFile(filename,
1684 GENERIC_READ|GENERIC_WRITE, 0, NULL,
1685 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1687 open_flags = O_BINARY | O_RDWR;
1688 // TODO : FILE_FLAG_OVERLAPPED
1690 ret = qemu_open(filename, open_flags, 0644);
1692 fprintf(stderr, "win_chr_init failed(%d)\n", ret);
1695 s->hcom = (HANDLE)_get_osfhandle(ret);
1697 if (s->hcom == INVALID_HANDLE_VALUE) {
1698 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1703 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1704 fprintf(stderr, "Failed SetupComm\n");
1708 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1709 size = sizeof(COMMCONFIG);
1710 GetDefaultCommConfig(filename, &comcfg, &size);
1711 comcfg.dcb.DCBlength = sizeof(DCB);
1712 CommConfigDialog(filename, NULL, &comcfg);
1714 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1715 fprintf(stderr, "Failed SetCommState\n");
1719 if (!SetCommMask(s->hcom, EV_ERR)) {
1720 fprintf(stderr, "Failed SetCommMask\n");
1724 cto.ReadIntervalTimeout = MAXDWORD;
1725 if (!SetCommTimeouts(s->hcom, &cto)) {
1726 fprintf(stderr, "Failed SetCommTimeouts\n");
1730 if (!ClearCommError(s->hcom, &err, &comstat)) {
1731 fprintf(stderr, "Failed ClearCommError\n");
1734 qemu_add_polling_cb(win_chr_poll, chr);
1742 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1744 WinCharState *s = chr->opaque;
1745 DWORD len, ret, size, err;
1748 ZeroMemory(&s->osend, sizeof(s->osend));
1749 s->osend.hEvent = s->hsend;
1752 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1754 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1756 err = GetLastError();
1757 if (err == ERROR_IO_PENDING) {
1758 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1776 static int win_chr_read_poll(CharDriverState *chr)
1778 WinCharState *s = chr->opaque;
1780 s->max_size = qemu_chr_be_can_write(chr);
1784 static void win_chr_readfile(CharDriverState *chr)
1786 WinCharState *s = chr->opaque;
1788 uint8_t buf[READ_BUF_LEN];
1791 ZeroMemory(&s->orecv, sizeof(s->orecv));
1792 s->orecv.hEvent = s->hrecv;
1793 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1795 err = GetLastError();
1796 if (err == ERROR_IO_PENDING) {
1797 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1802 qemu_chr_be_write(chr, buf, size);
1806 static void win_chr_read(CharDriverState *chr)
1808 WinCharState *s = chr->opaque;
1810 if (s->len > s->max_size)
1811 s->len = s->max_size;
1815 win_chr_readfile(chr);
1818 static int win_chr_poll(void *opaque)
1820 CharDriverState *chr = opaque;
1821 WinCharState *s = chr->opaque;
1825 ClearCommError(s->hcom, &comerr, &status);
1826 if (status.cbInQue > 0) {
1827 s->len = status.cbInQue;
1828 win_chr_read_poll(chr);
1835 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1837 CharDriverState *chr;
1840 chr = g_malloc0(sizeof(CharDriverState));
1841 s = g_malloc0(sizeof(WinCharState));
1843 chr->chr_write = win_chr_write;
1844 chr->chr_close = win_chr_close;
1846 if (win_chr_init(chr, filename) < 0) {
1854 static int win_chr_pipe_poll(void *opaque)
1856 CharDriverState *chr = opaque;
1857 WinCharState *s = chr->opaque;
1860 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1863 win_chr_read_poll(chr);
1870 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1872 WinCharState *s = chr->opaque;
1880 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1882 fprintf(stderr, "Failed CreateEvent\n");
1885 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1887 fprintf(stderr, "Failed CreateEvent\n");
1891 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1892 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1893 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1895 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1896 if (s->hcom == INVALID_HANDLE_VALUE) {
1897 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1902 ZeroMemory(&ov, sizeof(ov));
1903 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1904 ret = ConnectNamedPipe(s->hcom, &ov);
1906 fprintf(stderr, "Failed ConnectNamedPipe\n");
1910 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1912 fprintf(stderr, "Failed GetOverlappedResult\n");
1914 CloseHandle(ov.hEvent);
1921 CloseHandle(ov.hEvent);
1924 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1933 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1935 const char *filename = opts->device;
1936 CharDriverState *chr;
1939 chr = g_malloc0(sizeof(CharDriverState));
1940 s = g_malloc0(sizeof(WinCharState));
1942 chr->chr_write = win_chr_write;
1943 chr->chr_close = win_chr_close;
1945 if (win_chr_pipe_init(chr, filename) < 0) {
1953 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1955 CharDriverState *chr;
1958 chr = g_malloc0(sizeof(CharDriverState));
1959 s = g_malloc0(sizeof(WinCharState));
1962 chr->chr_write = win_chr_write;
1966 static CharDriverState *qemu_chr_open_win_con(void)
1968 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1971 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1973 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1980 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1990 static void win_stdio_wait_func(void *opaque)
1992 CharDriverState *chr = opaque;
1993 WinStdioCharState *stdio = chr->opaque;
1994 INPUT_RECORD buf[4];
1999 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2003 /* Avoid error storm */
2004 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2008 for (i = 0; i < dwSize; i++) {
2009 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2011 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2013 if (kev->uChar.AsciiChar != 0) {
2014 for (j = 0; j < kev->wRepeatCount; j++) {
2015 if (qemu_chr_be_can_write(chr)) {
2016 uint8_t c = kev->uChar.AsciiChar;
2017 qemu_chr_be_write(chr, &c, 1);
2025 static DWORD WINAPI win_stdio_thread(LPVOID param)
2027 CharDriverState *chr = param;
2028 WinStdioCharState *stdio = chr->opaque;
2034 /* Wait for one byte */
2035 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2037 /* Exit in case of error, continue if nothing read */
2045 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2046 if (stdio->win_stdio_buf == '\r') {
2050 /* Signal the main thread and wait until the byte was eaten */
2051 if (!SetEvent(stdio->hInputReadyEvent)) {
2054 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2060 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2064 static void win_stdio_thread_wait_func(void *opaque)
2066 CharDriverState *chr = opaque;
2067 WinStdioCharState *stdio = chr->opaque;
2069 if (qemu_chr_be_can_write(chr)) {
2070 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2073 SetEvent(stdio->hInputDoneEvent);
2076 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2078 WinStdioCharState *stdio = chr->opaque;
2081 GetConsoleMode(stdio->hStdIn, &dwMode);
2084 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2086 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2090 static void win_stdio_close(CharDriverState *chr)
2092 WinStdioCharState *stdio = chr->opaque;
2094 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2095 CloseHandle(stdio->hInputReadyEvent);
2097 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2098 CloseHandle(stdio->hInputDoneEvent);
2100 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2101 TerminateThread(stdio->hInputThread, 0);
2104 g_free(chr->opaque);
2108 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2110 CharDriverState *chr;
2111 WinStdioCharState *stdio;
2115 chr = g_malloc0(sizeof(CharDriverState));
2116 stdio = g_malloc0(sizeof(WinStdioCharState));
2118 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2119 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2120 fprintf(stderr, "cannot open stdio: invalid handle\n");
2124 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2126 chr->opaque = stdio;
2127 chr->chr_write = win_stdio_write;
2128 chr->chr_close = win_stdio_close;
2131 if (qemu_add_wait_object(stdio->hStdIn,
2132 win_stdio_wait_func, chr)) {
2133 fprintf(stderr, "qemu_add_wait_object: failed\n");
2138 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2139 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2140 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2143 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2144 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2145 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2146 fprintf(stderr, "cannot create stdio thread or event\n");
2149 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2150 win_stdio_thread_wait_func, chr)) {
2151 fprintf(stderr, "qemu_add_wait_object: failed\n");
2155 dwMode |= ENABLE_LINE_INPUT;
2158 /* set the terminal in raw mode */
2159 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2160 dwMode |= ENABLE_PROCESSED_INPUT;
2163 SetConsoleMode(stdio->hStdIn, dwMode);
2165 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2166 qemu_chr_fe_set_echo(chr, false);
2170 #endif /* !_WIN32 */
2173 /***********************************************************/
2174 /* UDP Net console */
2180 uint8_t buf[READ_BUF_LEN];
2186 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2188 NetCharDriver *s = chr->opaque;
2189 gsize bytes_written;
2192 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2193 if (status == G_IO_STATUS_EOF) {
2195 } else if (status != G_IO_STATUS_NORMAL) {
2199 return bytes_written;
2202 static int udp_chr_read_poll(void *opaque)
2204 CharDriverState *chr = opaque;
2205 NetCharDriver *s = chr->opaque;
2207 s->max_size = qemu_chr_be_can_write(chr);
2209 /* If there were any stray characters in the queue process them
2212 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2213 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2215 s->max_size = qemu_chr_be_can_write(chr);
2220 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2222 CharDriverState *chr = opaque;
2223 NetCharDriver *s = chr->opaque;
2224 gsize bytes_read = 0;
2227 if (s->max_size == 0) {
2230 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2232 s->bufcnt = bytes_read;
2233 s->bufptr = s->bufcnt;
2234 if (status != G_IO_STATUS_NORMAL) {
2236 io_remove_watch_poll(s->tag);
2243 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2244 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2246 s->max_size = qemu_chr_be_can_write(chr);
2252 static void udp_chr_update_read_handler(CharDriverState *chr)
2254 NetCharDriver *s = chr->opaque;
2257 io_remove_watch_poll(s->tag);
2262 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2266 static void udp_chr_close(CharDriverState *chr)
2268 NetCharDriver *s = chr->opaque;
2270 io_remove_watch_poll(s->tag);
2274 g_io_channel_unref(s->chan);
2278 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2281 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2283 CharDriverState *chr = NULL;
2284 NetCharDriver *s = NULL;
2286 chr = g_malloc0(sizeof(CharDriverState));
2287 s = g_malloc0(sizeof(NetCharDriver));
2290 s->chan = io_channel_from_socket(s->fd);
2294 chr->chr_write = udp_chr_write;
2295 chr->chr_update_read_handler = udp_chr_update_read_handler;
2296 chr->chr_close = udp_chr_close;
2297 /* be isn't opened until we get a connection */
2298 chr->explicit_be_open = true;
2302 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2304 Error *local_err = NULL;
2307 fd = inet_dgram_opts(opts, &local_err);
2309 qerror_report_err(local_err);
2310 error_free(local_err);
2313 return qemu_chr_open_udp_fd(fd);
2316 /***********************************************************/
2317 /* TCP Net console */
2321 GIOChannel *chan, *listen_chan;
2322 guint tag, listen_tag;
2332 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2334 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2336 TCPCharDriver *s = chr->opaque;
2338 return io_channel_send(s->chan, buf, len);
2340 /* XXX: indicate an error ? */
2345 static int tcp_chr_read_poll(void *opaque)
2347 CharDriverState *chr = opaque;
2348 TCPCharDriver *s = chr->opaque;
2351 s->max_size = qemu_chr_be_can_write(chr);
2356 #define IAC_BREAK 243
2357 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2359 uint8_t *buf, int *size)
2361 /* Handle any telnet client's basic IAC options to satisfy char by
2362 * char mode with no echo. All IAC options will be removed from
2363 * the buf and the do_telnetopt variable will be used to track the
2364 * state of the width of the IAC information.
2366 * IAC commands come in sets of 3 bytes with the exception of the
2367 * "IAC BREAK" command and the double IAC.
2373 for (i = 0; i < *size; i++) {
2374 if (s->do_telnetopt > 1) {
2375 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2376 /* Double IAC means send an IAC */
2380 s->do_telnetopt = 1;
2382 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2383 /* Handle IAC break commands by sending a serial break */
2384 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2389 if (s->do_telnetopt >= 4) {
2390 s->do_telnetopt = 1;
2393 if ((unsigned char)buf[i] == IAC) {
2394 s->do_telnetopt = 2;
2405 static int tcp_get_msgfd(CharDriverState *chr)
2407 TCPCharDriver *s = chr->opaque;
2414 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2416 TCPCharDriver *s = chr->opaque;
2417 struct cmsghdr *cmsg;
2419 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2422 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2423 cmsg->cmsg_level != SOL_SOCKET ||
2424 cmsg->cmsg_type != SCM_RIGHTS)
2427 fd = *((int *)CMSG_DATA(cmsg));
2431 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2434 #ifndef MSG_CMSG_CLOEXEC
2435 qemu_set_cloexec(fd);
2443 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2445 TCPCharDriver *s = chr->opaque;
2446 struct msghdr msg = { NULL, };
2447 struct iovec iov[1];
2449 struct cmsghdr cmsg;
2450 char control[CMSG_SPACE(sizeof(int))];
2455 iov[0].iov_base = buf;
2456 iov[0].iov_len = len;
2460 msg.msg_control = &msg_control;
2461 msg.msg_controllen = sizeof(msg_control);
2463 #ifdef MSG_CMSG_CLOEXEC
2464 flags |= MSG_CMSG_CLOEXEC;
2466 ret = recvmsg(s->fd, &msg, flags);
2467 if (ret > 0 && s->is_unix) {
2468 unix_process_msgfd(chr, &msg);
2474 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2476 TCPCharDriver *s = chr->opaque;
2477 return qemu_recv(s->fd, buf, len, 0);
2481 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2483 TCPCharDriver *s = chr->opaque;
2484 return g_io_create_watch(s->chan, cond);
2487 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2489 CharDriverState *chr = opaque;
2490 TCPCharDriver *s = chr->opaque;
2491 uint8_t buf[READ_BUF_LEN];
2494 if (!s->connected || s->max_size <= 0) {
2498 if (len > s->max_size)
2500 size = tcp_chr_recv(chr, (void *)buf, len);
2502 /* connection closed */
2504 if (s->listen_chan) {
2505 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2508 io_remove_watch_poll(s->tag);
2511 g_io_channel_unref(s->chan);
2515 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2516 } else if (size > 0) {
2517 if (s->do_telnetopt)
2518 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2520 qemu_chr_be_write(chr, buf, size);
2527 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2529 return qemu_chr_open_fd(eventfd, eventfd);
2533 static void tcp_chr_connect(void *opaque)
2535 CharDriverState *chr = opaque;
2536 TCPCharDriver *s = chr->opaque;
2540 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2542 qemu_chr_be_generic_open(chr);
2545 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2546 static void tcp_chr_telnet_init(int fd)
2549 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2550 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2551 send(fd, (char *)buf, 3, 0);
2552 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2553 send(fd, (char *)buf, 3, 0);
2554 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2555 send(fd, (char *)buf, 3, 0);
2556 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2557 send(fd, (char *)buf, 3, 0);
2560 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2562 TCPCharDriver *s = chr->opaque;
2566 qemu_set_nonblock(fd);
2568 socket_set_nodelay(fd);
2570 s->chan = io_channel_from_socket(fd);
2571 if (s->listen_tag) {
2572 g_source_remove(s->listen_tag);
2575 tcp_chr_connect(chr);
2580 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2582 CharDriverState *chr = opaque;
2583 TCPCharDriver *s = chr->opaque;
2584 struct sockaddr_in saddr;
2586 struct sockaddr_un uaddr;
2588 struct sockaddr *addr;
2595 len = sizeof(uaddr);
2596 addr = (struct sockaddr *)&uaddr;
2600 len = sizeof(saddr);
2601 addr = (struct sockaddr *)&saddr;
2603 fd = qemu_accept(s->listen_fd, addr, &len);
2604 if (fd < 0 && errno != EINTR) {
2607 } else if (fd >= 0) {
2608 if (s->do_telnetopt)
2609 tcp_chr_telnet_init(fd);
2613 if (tcp_chr_add_client(chr, fd) < 0)
2619 static void tcp_chr_close(CharDriverState *chr)
2621 TCPCharDriver *s = chr->opaque;
2624 io_remove_watch_poll(s->tag);
2628 g_io_channel_unref(s->chan);
2632 if (s->listen_fd >= 0) {
2633 if (s->listen_tag) {
2634 g_source_remove(s->listen_tag);
2637 if (s->listen_chan) {
2638 g_io_channel_unref(s->listen_chan);
2640 closesocket(s->listen_fd);
2643 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2646 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2647 bool is_listen, bool is_telnet,
2648 bool is_waitconnect,
2651 CharDriverState *chr = NULL;
2652 TCPCharDriver *s = NULL;
2653 char host[NI_MAXHOST], serv[NI_MAXSERV];
2654 const char *left = "", *right = "";
2655 struct sockaddr_storage ss;
2656 socklen_t ss_len = sizeof(ss);
2658 memset(&ss, 0, ss_len);
2659 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2660 error_setg_errno(errp, errno, "getsockname");
2664 chr = g_malloc0(sizeof(CharDriverState));
2665 s = g_malloc0(sizeof(TCPCharDriver));
2672 chr->filename = g_malloc(256);
2673 switch (ss.ss_family) {
2677 snprintf(chr->filename, 256, "unix:%s%s",
2678 ((struct sockaddr_un *)(&ss))->sun_path,
2679 is_listen ? ",server" : "");
2687 s->do_nodelay = do_nodelay;
2688 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2689 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2690 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2691 is_telnet ? "telnet" : "tcp",
2692 left, host, right, serv,
2693 is_listen ? ",server" : "");
2698 chr->chr_write = tcp_chr_write;
2699 chr->chr_close = tcp_chr_close;
2700 chr->get_msgfd = tcp_get_msgfd;
2701 chr->chr_add_client = tcp_chr_add_client;
2702 chr->chr_add_watch = tcp_chr_add_watch;
2703 /* be isn't opened until we get a connection */
2704 chr->explicit_be_open = true;
2708 s->listen_chan = io_channel_from_socket(s->listen_fd);
2709 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2711 s->do_telnetopt = 1;
2716 socket_set_nodelay(fd);
2717 s->chan = io_channel_from_socket(s->fd);
2718 tcp_chr_connect(chr);
2721 if (is_listen && is_waitconnect) {
2722 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2724 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2725 qemu_set_nonblock(s->listen_fd);
2730 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2732 CharDriverState *chr = NULL;
2733 Error *local_err = NULL;
2736 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2737 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2738 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2739 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2740 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2744 fd = unix_listen_opts(opts, &local_err);
2746 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2750 fd = inet_listen_opts(opts, 0, &local_err);
2752 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2759 if (!is_waitconnect)
2760 qemu_set_nonblock(fd);
2762 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2763 is_waitconnect, &local_err);
2764 if (error_is_set(&local_err)) {
2772 qerror_report_err(local_err);
2773 error_free(local_err);
2779 g_free(chr->opaque);
2785 /*********************************************************/
2786 /* Ring buffer chardev */
2793 } RingBufCharDriver;
2795 static size_t ringbuf_count(const CharDriverState *chr)
2797 const RingBufCharDriver *d = chr->opaque;
2799 return d->prod - d->cons;
2802 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2804 RingBufCharDriver *d = chr->opaque;
2807 if (!buf || (len < 0)) {
2811 for (i = 0; i < len; i++ ) {
2812 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2813 if (d->prod - d->cons > d->size) {
2814 d->cons = d->prod - d->size;
2821 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2823 RingBufCharDriver *d = chr->opaque;
2826 for (i = 0; i < len && d->cons != d->prod; i++) {
2827 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2833 static void ringbuf_chr_close(struct CharDriverState *chr)
2835 RingBufCharDriver *d = chr->opaque;
2842 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2845 CharDriverState *chr;
2846 RingBufCharDriver *d;
2848 chr = g_malloc0(sizeof(CharDriverState));
2849 d = g_malloc(sizeof(*d));
2851 d->size = opts->has_size ? opts->size : 65536;
2853 /* The size must be power of 2 */
2854 if (d->size & (d->size - 1)) {
2855 error_setg(errp, "size of ringbuf chardev must be power of two");
2861 d->cbuf = g_malloc0(d->size);
2864 chr->chr_write = ringbuf_chr_write;
2865 chr->chr_close = ringbuf_chr_close;
2875 static bool chr_is_ringbuf(const CharDriverState *chr)
2877 return chr->chr_write == ringbuf_chr_write;
2880 void qmp_ringbuf_write(const char *device, const char *data,
2881 bool has_format, enum DataFormat format,
2884 CharDriverState *chr;
2885 const uint8_t *write_data;
2889 chr = qemu_chr_find(device);
2891 error_setg(errp, "Device '%s' not found", device);
2895 if (!chr_is_ringbuf(chr)) {
2896 error_setg(errp,"%s is not a ringbuf device", device);
2900 if (has_format && (format == DATA_FORMAT_BASE64)) {
2901 write_data = g_base64_decode(data, &write_count);
2903 write_data = (uint8_t *)data;
2904 write_count = strlen(data);
2907 ret = ringbuf_chr_write(chr, write_data, write_count);
2909 if (write_data != (uint8_t *)data) {
2910 g_free((void *)write_data);
2914 error_setg(errp, "Failed to write to device %s", device);
2919 char *qmp_ringbuf_read(const char *device, int64_t size,
2920 bool has_format, enum DataFormat format,
2923 CharDriverState *chr;
2928 chr = qemu_chr_find(device);
2930 error_setg(errp, "Device '%s' not found", device);
2934 if (!chr_is_ringbuf(chr)) {
2935 error_setg(errp,"%s is not a ringbuf device", device);
2940 error_setg(errp, "size must be greater than zero");
2944 count = ringbuf_count(chr);
2945 size = size > count ? count : size;
2946 read_data = g_malloc(size + 1);
2948 ringbuf_chr_read(chr, read_data, size);
2950 if (has_format && (format == DATA_FORMAT_BASE64)) {
2951 data = g_base64_encode(read_data, size);
2955 * FIXME should read only complete, valid UTF-8 characters up
2956 * to @size bytes. Invalid sequences should be replaced by a
2957 * suitable replacement character. Except when (and only
2958 * when) ring buffer lost characters since last read, initial
2959 * continuation characters should be dropped.
2961 read_data[size] = 0;
2962 data = (char *)read_data;
2968 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2970 char host[65], port[33], width[8], height[8];
2974 Error *local_err = NULL;
2976 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2977 if (error_is_set(&local_err)) {
2978 qerror_report_err(local_err);
2979 error_free(local_err);
2983 if (strstart(filename, "mon:", &p)) {
2985 qemu_opt_set(opts, "mux", "on");
2986 if (strcmp(filename, "stdio") == 0) {
2987 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
2988 * but pass it to the guest. Handle this only for compat syntax,
2989 * for -chardev syntax we have special option for this.
2990 * This is what -nographic did, redirecting+muxing serial+monitor
2991 * to stdio causing Ctrl+C to be passed to guest. */
2992 qemu_opt_set(opts, "signal", "off");
2996 if (strcmp(filename, "null") == 0 ||
2997 strcmp(filename, "pty") == 0 ||
2998 strcmp(filename, "msmouse") == 0 ||
2999 strcmp(filename, "braille") == 0 ||
3000 strcmp(filename, "stdio") == 0) {
3001 qemu_opt_set(opts, "backend", filename);
3004 if (strstart(filename, "vc", &p)) {
3005 qemu_opt_set(opts, "backend", "vc");
3007 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3009 qemu_opt_set(opts, "width", width);
3010 qemu_opt_set(opts, "height", height);
3011 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3013 qemu_opt_set(opts, "cols", width);
3014 qemu_opt_set(opts, "rows", height);
3021 if (strcmp(filename, "con:") == 0) {
3022 qemu_opt_set(opts, "backend", "console");
3025 if (strstart(filename, "COM", NULL)) {
3026 qemu_opt_set(opts, "backend", "serial");
3027 qemu_opt_set(opts, "path", filename);
3030 if (strstart(filename, "file:", &p)) {
3031 qemu_opt_set(opts, "backend", "file");
3032 qemu_opt_set(opts, "path", p);
3035 if (strstart(filename, "pipe:", &p)) {
3036 qemu_opt_set(opts, "backend", "pipe");
3037 qemu_opt_set(opts, "path", p);
3040 if (strstart(filename, "tcp:", &p) ||
3041 strstart(filename, "telnet:", &p)) {
3042 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3044 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3047 qemu_opt_set(opts, "backend", "socket");
3048 qemu_opt_set(opts, "host", host);
3049 qemu_opt_set(opts, "port", port);
3050 if (p[pos] == ',') {
3051 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3054 if (strstart(filename, "telnet:", &p))
3055 qemu_opt_set(opts, "telnet", "on");
3058 if (strstart(filename, "udp:", &p)) {
3059 qemu_opt_set(opts, "backend", "udp");
3060 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3062 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3066 qemu_opt_set(opts, "host", host);
3067 qemu_opt_set(opts, "port", port);
3068 if (p[pos] == '@') {
3070 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3072 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3076 qemu_opt_set(opts, "localaddr", host);
3077 qemu_opt_set(opts, "localport", port);
3081 if (strstart(filename, "unix:", &p)) {
3082 qemu_opt_set(opts, "backend", "socket");
3083 if (qemu_opts_do_parse(opts, p, "path") != 0)
3087 if (strstart(filename, "/dev/parport", NULL) ||
3088 strstart(filename, "/dev/ppi", NULL)) {
3089 qemu_opt_set(opts, "backend", "parport");
3090 qemu_opt_set(opts, "path", filename);
3093 if (strstart(filename, "/dev/", NULL)) {
3094 qemu_opt_set(opts, "backend", "tty");
3095 qemu_opt_set(opts, "path", filename);
3100 qemu_opts_del(opts);
3104 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3107 const char *path = qemu_opt_get(opts, "path");
3110 error_setg(errp, "chardev: file: no filename given");
3113 backend->file = g_new0(ChardevFile, 1);
3114 backend->file->out = g_strdup(path);
3117 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3120 backend->stdio = g_new0(ChardevStdio, 1);
3121 backend->stdio->has_signal = true;
3122 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3125 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3128 const char *device = qemu_opt_get(opts, "path");
3130 if (device == NULL) {
3131 error_setg(errp, "chardev: serial/tty: no device path given");
3134 backend->serial = g_new0(ChardevHostdev, 1);
3135 backend->serial->device = g_strdup(device);
3138 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3141 const char *device = qemu_opt_get(opts, "path");
3143 if (device == NULL) {
3144 error_setg(errp, "chardev: parallel: no device path given");
3147 backend->parallel = g_new0(ChardevHostdev, 1);
3148 backend->parallel->device = g_strdup(device);
3151 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3154 const char *device = qemu_opt_get(opts, "path");
3156 if (device == NULL) {
3157 error_setg(errp, "chardev: pipe: no device path given");
3160 backend->pipe = g_new0(ChardevHostdev, 1);
3161 backend->pipe->device = g_strdup(device);
3164 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3169 backend->ringbuf = g_new0(ChardevRingbuf, 1);
3171 val = qemu_opt_get_size(opts, "size", 0);
3173 backend->ringbuf->has_size = true;
3174 backend->ringbuf->size = val;
3178 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3181 const char *chardev = qemu_opt_get(opts, "chardev");
3183 if (chardev == NULL) {
3184 error_setg(errp, "chardev: mux: no chardev given");
3187 backend->mux = g_new0(ChardevMux, 1);
3188 backend->mux->chardev = g_strdup(chardev);
3191 typedef struct CharDriver {
3194 CharDriverState *(*open)(QemuOpts *opts);
3195 /* new, qapi-based */
3196 ChardevBackendKind kind;
3197 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3200 static GSList *backends;
3202 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3206 s = g_malloc0(sizeof(*s));
3207 s->name = g_strdup(name);
3210 backends = g_slist_append(backends, s);
3213 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3214 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3218 s = g_malloc0(sizeof(*s));
3219 s->name = g_strdup(name);
3223 backends = g_slist_append(backends, s);
3226 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3227 void (*init)(struct CharDriverState *s),
3231 CharDriverState *chr;
3234 if (qemu_opts_id(opts) == NULL) {
3235 error_setg(errp, "chardev: no id specified");
3239 if (qemu_opt_get(opts, "backend") == NULL) {
3240 error_setg(errp, "chardev: \"%s\" missing backend",
3241 qemu_opts_id(opts));
3244 for (i = backends; i; i = i->next) {
3247 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3252 error_setg(errp, "chardev: backend \"%s\" not found",
3253 qemu_opt_get(opts, "backend"));
3258 /* using new, qapi init */
3259 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3260 ChardevReturn *ret = NULL;
3261 const char *id = qemu_opts_id(opts);
3264 if (qemu_opt_get_bool(opts, "mux", 0)) {
3265 bid = g_strdup_printf("%s-base", id);
3269 backend->kind = cd->kind;
3271 cd->parse(opts, backend, errp);
3272 if (error_is_set(errp)) {
3276 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3277 if (error_is_set(errp)) {
3282 qapi_free_ChardevBackend(backend);
3283 qapi_free_ChardevReturn(ret);
3284 backend = g_new0(ChardevBackend, 1);
3285 backend->mux = g_new0(ChardevMux, 1);
3286 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3287 backend->mux->chardev = g_strdup(bid);
3288 ret = qmp_chardev_add(id, backend, errp);
3289 assert(!error_is_set(errp));
3292 chr = qemu_chr_find(id);
3296 qapi_free_ChardevBackend(backend);
3297 qapi_free_ChardevReturn(ret);
3302 chr = cd->open(opts);
3304 error_setg(errp, "chardev: opening backend \"%s\" failed",
3305 qemu_opt_get(opts, "backend"));
3310 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3312 /* if we didn't create the chardev via qmp_chardev_add, we
3313 * need to send the OPENED event here
3315 if (!chr->explicit_be_open) {
3316 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3318 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3320 if (qemu_opt_get_bool(opts, "mux", 0)) {
3321 CharDriverState *base = chr;
3322 int len = strlen(qemu_opts_id(opts)) + 6;
3323 base->label = g_malloc(len);
3324 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3325 chr = qemu_chr_open_mux(base);
3326 chr->filename = base->filename;
3327 chr->avail_connections = MAX_MUX;
3328 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3330 chr->avail_connections = 1;
3332 chr->label = g_strdup(qemu_opts_id(opts));
3337 qemu_opts_del(opts);
3341 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3344 CharDriverState *chr;
3348 if (strstart(filename, "chardev:", &p)) {
3349 return qemu_chr_find(p);
3352 opts = qemu_chr_parse_compat(label, filename);
3356 chr = qemu_chr_new_from_opts(opts, init, &err);
3357 if (error_is_set(&err)) {
3358 fprintf(stderr, "%s\n", error_get_pretty(err));
3361 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3362 qemu_chr_fe_claim_no_fail(chr);
3363 monitor_init(chr, MONITOR_USE_READLINE);
3368 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3370 if (chr->chr_set_echo) {
3371 chr->chr_set_echo(chr, echo);
3375 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3377 if (chr->fe_open == fe_open) {
3380 chr->fe_open = fe_open;
3381 if (chr->chr_set_fe_open) {
3382 chr->chr_set_fe_open(chr, fe_open);
3386 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3387 GIOFunc func, void *user_data)
3392 if (s->chr_add_watch == NULL) {
3396 src = s->chr_add_watch(s, cond);
3397 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3398 tag = g_source_attach(src, NULL);
3399 g_source_unref(src);
3404 int qemu_chr_fe_claim(CharDriverState *s)
3406 if (s->avail_connections < 1) {
3409 s->avail_connections--;
3413 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3415 if (qemu_chr_fe_claim(s) != 0) {
3416 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3417 __func__, s->label);
3422 void qemu_chr_fe_release(CharDriverState *s)
3424 s->avail_connections++;
3427 void qemu_chr_delete(CharDriverState *chr)
3429 QTAILQ_REMOVE(&chardevs, chr, next);
3430 if (chr->chr_close) {
3431 chr->chr_close(chr);
3433 g_free(chr->filename);
3436 qemu_opts_del(chr->opts);
3441 ChardevInfoList *qmp_query_chardev(Error **errp)
3443 ChardevInfoList *chr_list = NULL;
3444 CharDriverState *chr;
3446 QTAILQ_FOREACH(chr, &chardevs, next) {
3447 ChardevInfoList *info = g_malloc0(sizeof(*info));
3448 info->value = g_malloc0(sizeof(*info->value));
3449 info->value->label = g_strdup(chr->label);
3450 info->value->filename = g_strdup(chr->filename);
3452 info->next = chr_list;
3459 CharDriverState *qemu_chr_find(const char *name)
3461 CharDriverState *chr;
3463 QTAILQ_FOREACH(chr, &chardevs, next) {
3464 if (strcmp(chr->label, name) != 0)
3471 /* Get a character (serial) device interface. */
3472 CharDriverState *qemu_char_get_next_serial(void)
3474 static int next_serial;
3475 CharDriverState *chr;
3477 /* FIXME: This function needs to go away: use chardev properties! */
3479 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3480 chr = serial_hds[next_serial++];
3481 qemu_chr_fe_claim_no_fail(chr);
3487 QemuOptsList qemu_chardev_opts = {
3489 .implied_opt_name = "backend",
3490 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3494 .type = QEMU_OPT_STRING,
3497 .type = QEMU_OPT_STRING,
3500 .type = QEMU_OPT_STRING,
3503 .type = QEMU_OPT_STRING,
3505 .name = "localaddr",
3506 .type = QEMU_OPT_STRING,
3508 .name = "localport",
3509 .type = QEMU_OPT_STRING,
3512 .type = QEMU_OPT_NUMBER,
3515 .type = QEMU_OPT_BOOL,
3518 .type = QEMU_OPT_BOOL,
3521 .type = QEMU_OPT_BOOL,
3524 .type = QEMU_OPT_BOOL,
3527 .type = QEMU_OPT_BOOL,
3530 .type = QEMU_OPT_BOOL,
3533 .type = QEMU_OPT_NUMBER,
3536 .type = QEMU_OPT_NUMBER,
3539 .type = QEMU_OPT_NUMBER,
3542 .type = QEMU_OPT_NUMBER,
3545 .type = QEMU_OPT_BOOL,
3548 .type = QEMU_OPT_BOOL,
3551 .type = QEMU_OPT_STRING,
3554 .type = QEMU_OPT_NUMBER,
3557 .type = QEMU_OPT_SIZE,
3560 .type = QEMU_OPT_STRING,
3562 { /* end of list */ }
3568 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3572 int open_flags, ret;
3576 error_setg(errp, "input file not supported");
3581 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3582 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3584 open_flags = O_BINARY | O_RDWR | O_CREAT | O_TRUNC;
3585 ret = qemu_open(file->out, open_flags, 0644);
3587 error_setg(errp, "qemu_chr_open_win_file_out failed(%d)", ret);
3590 out = (HANDLE)_get_osfhandle(ret);
3592 if (out == INVALID_HANDLE_VALUE) {
3593 error_setg(errp, "open %s failed", file->out);
3597 return qemu_chr_open_win_file(out);
3600 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3603 return qemu_chr_open_win_path(serial->device);
3606 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3609 error_setg(errp, "character device backend type 'parallel' not supported");
3615 static int qmp_chardev_open_file_source(char *src, int flags,
3620 TFR(fd = qemu_open(src, flags, 0666));
3622 error_setg_file_open(errp, errno, src);
3627 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3629 int flags, in = -1, out = -1;
3631 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3632 out = qmp_chardev_open_file_source(file->out, flags, errp);
3633 if (error_is_set(errp)) {
3639 in = qmp_chardev_open_file_source(file->in, flags, errp);
3640 if (error_is_set(errp)) {
3646 return qemu_chr_open_fd(in, out);
3649 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3652 #ifdef HAVE_CHARDEV_TTY
3655 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3656 if (error_is_set(errp)) {
3659 qemu_set_nonblock(fd);
3660 return qemu_chr_open_tty_fd(fd);
3662 error_setg(errp, "character device backend type 'serial' not supported");
3667 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3670 #ifdef HAVE_CHARDEV_PARPORT
3673 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3674 if (error_is_set(errp)) {
3677 return qemu_chr_open_pp_fd(fd);
3679 error_setg(errp, "character device backend type 'parallel' not supported");
3686 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3689 SocketAddress *addr = sock->addr;
3690 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3691 bool is_listen = sock->has_server ? sock->server : true;
3692 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3693 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3697 fd = socket_listen(addr, errp);
3699 fd = socket_connect(addr, errp, NULL, NULL);
3701 if (error_is_set(errp)) {
3704 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3705 is_telnet, is_waitconnect, errp);
3708 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3713 fd = socket_dgram(udp->remote, udp->local, errp);
3714 if (error_is_set(errp)) {
3717 return qemu_chr_open_udp_fd(fd);
3720 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3723 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3724 CharDriverState *base, *chr = NULL;
3726 chr = qemu_chr_find(id);
3728 error_setg(errp, "Chardev '%s' already exists", id);
3733 switch (backend->kind) {
3734 case CHARDEV_BACKEND_KIND_FILE:
3735 chr = qmp_chardev_open_file(backend->file, errp);
3737 case CHARDEV_BACKEND_KIND_SERIAL:
3738 chr = qmp_chardev_open_serial(backend->serial, errp);
3740 case CHARDEV_BACKEND_KIND_PARALLEL:
3741 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3743 case CHARDEV_BACKEND_KIND_PIPE:
3744 chr = qemu_chr_open_pipe(backend->pipe);
3746 case CHARDEV_BACKEND_KIND_SOCKET:
3747 chr = qmp_chardev_open_socket(backend->socket, errp);
3749 case CHARDEV_BACKEND_KIND_UDP:
3750 chr = qmp_chardev_open_udp(backend->udp, errp);
3752 #ifdef HAVE_CHARDEV_TTY
3753 case CHARDEV_BACKEND_KIND_PTY:
3754 chr = qemu_chr_open_pty(id, ret);
3757 case CHARDEV_BACKEND_KIND_NULL:
3758 chr = qemu_chr_open_null();
3760 case CHARDEV_BACKEND_KIND_MUX:
3761 base = qemu_chr_find(backend->mux->chardev);
3763 error_setg(errp, "mux: base chardev %s not found",
3764 backend->mux->chardev);
3767 chr = qemu_chr_open_mux(base);
3769 case CHARDEV_BACKEND_KIND_MSMOUSE:
3770 chr = qemu_chr_open_msmouse();
3772 #ifdef CONFIG_BRLAPI
3773 case CHARDEV_BACKEND_KIND_BRAILLE:
3774 chr = chr_baum_init();
3777 case CHARDEV_BACKEND_KIND_STDIO:
3778 chr = qemu_chr_open_stdio(backend->stdio);
3781 case CHARDEV_BACKEND_KIND_CONSOLE:
3782 chr = qemu_chr_open_win_con();
3786 case CHARDEV_BACKEND_KIND_SPICEVMC:
3787 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3789 case CHARDEV_BACKEND_KIND_SPICEPORT:
3790 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3793 case CHARDEV_BACKEND_KIND_VC:
3794 chr = vc_init(backend->vc);
3796 case CHARDEV_BACKEND_KIND_RINGBUF:
3797 case CHARDEV_BACKEND_KIND_MEMORY:
3798 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
3801 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3805 if (chr == NULL && !error_is_set(errp)) {
3806 error_setg(errp, "Failed to create chardev");
3809 chr->label = g_strdup(id);
3810 chr->avail_connections =
3811 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3812 if (!chr->filename) {
3813 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
3815 if (!chr->explicit_be_open) {
3816 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3818 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3826 void qmp_chardev_remove(const char *id, Error **errp)
3828 CharDriverState *chr;
3830 chr = qemu_chr_find(id);
3832 error_setg(errp, "Chardev '%s' not found", id);
3835 if (chr->chr_can_read || chr->chr_read ||
3836 chr->chr_event || chr->handler_opaque) {
3837 error_setg(errp, "Chardev '%s' is busy", id);
3840 qemu_chr_delete(chr);
3843 static void register_types(void)
3845 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3846 register_char_driver("socket", qemu_chr_open_socket);
3847 register_char_driver("udp", qemu_chr_open_udp);
3848 register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
3849 qemu_chr_parse_ringbuf);
3850 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3851 qemu_chr_parse_file_out);
3852 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3853 qemu_chr_parse_stdio);
3854 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3855 qemu_chr_parse_serial);
3856 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3857 qemu_chr_parse_serial);
3858 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3859 qemu_chr_parse_parallel);
3860 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3861 qemu_chr_parse_parallel);
3862 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3863 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3864 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3865 qemu_chr_parse_pipe);
3866 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
3867 qemu_chr_parse_mux);
3868 /* Bug-compatibility: */
3869 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3870 qemu_chr_parse_ringbuf);
3871 /* this must be done after machine init, since we register FEs with muxes
3872 * as part of realize functions like serial_isa_realizefn when -nographic
3875 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
3878 type_init(register_types);