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;
1034 pty_chr_update_read_handler(chr);
1041 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1043 PtyCharDriver *s = chr->opaque;
1046 g_source_remove(s->timer_tag);
1051 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1053 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1057 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1059 PtyCharDriver *s = chr->opaque;
1061 if (!s->connected) {
1062 /* guest sends data, check for (re-)connect */
1063 pty_chr_update_read_handler(chr);
1066 return io_channel_send(s->fd, buf, len);
1069 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1071 PtyCharDriver *s = chr->opaque;
1072 return g_io_create_watch(s->fd, cond);
1075 static int pty_chr_read_poll(void *opaque)
1077 CharDriverState *chr = opaque;
1078 PtyCharDriver *s = chr->opaque;
1080 s->read_bytes = qemu_chr_be_can_write(chr);
1081 return s->read_bytes;
1084 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1086 CharDriverState *chr = opaque;
1087 PtyCharDriver *s = chr->opaque;
1089 uint8_t buf[READ_BUF_LEN];
1093 if (len > s->read_bytes)
1094 len = s->read_bytes;
1098 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1099 if (status != G_IO_STATUS_NORMAL) {
1100 pty_chr_state(chr, 0);
1103 pty_chr_state(chr, 1);
1104 qemu_chr_be_write(chr, buf, size);
1109 static void pty_chr_update_read_handler(CharDriverState *chr)
1111 PtyCharDriver *s = chr->opaque;
1114 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1115 pfd.events = G_IO_OUT;
1118 if (pfd.revents & G_IO_HUP) {
1119 pty_chr_state(chr, 0);
1121 pty_chr_state(chr, 1);
1125 static void pty_chr_state(CharDriverState *chr, int connected)
1127 PtyCharDriver *s = chr->opaque;
1131 io_remove_watch_poll(s->fd_tag);
1135 /* (re-)connect poll interval for idle guests: once per second.
1136 * We check more frequently in case the guests sends data to
1137 * the virtual device linked to our pty. */
1138 pty_chr_rearm_timer(chr, 1000);
1141 g_source_remove(s->timer_tag);
1144 if (!s->connected) {
1145 qemu_chr_be_generic_open(chr);
1147 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1153 static void pty_chr_close(struct CharDriverState *chr)
1155 PtyCharDriver *s = chr->opaque;
1159 io_remove_watch_poll(s->fd_tag);
1162 fd = g_io_channel_unix_get_fd(s->fd);
1163 g_io_channel_unref(s->fd);
1166 g_source_remove(s->timer_tag);
1170 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1173 static CharDriverState *qemu_chr_open_pty(const char *id,
1176 CharDriverState *chr;
1178 int master_fd, slave_fd;
1179 char pty_name[PATH_MAX];
1181 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1182 if (master_fd < 0) {
1188 chr = g_malloc0(sizeof(CharDriverState));
1190 chr->filename = g_strdup_printf("pty:%s", pty_name);
1191 ret->pty = g_strdup(pty_name);
1192 ret->has_pty = true;
1194 fprintf(stderr, "char device redirected to %s (label %s)\n",
1197 s = g_malloc0(sizeof(PtyCharDriver));
1199 chr->chr_write = pty_chr_write;
1200 chr->chr_update_read_handler = pty_chr_update_read_handler;
1201 chr->chr_close = pty_chr_close;
1202 chr->chr_add_watch = pty_chr_add_watch;
1203 chr->explicit_be_open = true;
1205 s->fd = io_channel_from_fd(master_fd);
1211 static void tty_serial_init(int fd, int speed,
1212 int parity, int data_bits, int stop_bits)
1218 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1219 speed, parity, data_bits, stop_bits);
1221 tcgetattr (fd, &tty);
1223 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1224 speed = speed * 10 / 11;
1241 /* Non-Posix values follow. They may be unsupported on some systems. */
1243 check_speed(115200);
1245 check_speed(230400);
1248 check_speed(460800);
1251 check_speed(500000);
1254 check_speed(576000);
1257 check_speed(921600);
1260 check_speed(1000000);
1263 check_speed(1152000);
1266 check_speed(1500000);
1269 check_speed(2000000);
1272 check_speed(2500000);
1275 check_speed(3000000);
1278 check_speed(3500000);
1281 check_speed(4000000);
1286 cfsetispeed(&tty, spd);
1287 cfsetospeed(&tty, spd);
1289 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1290 |INLCR|IGNCR|ICRNL|IXON);
1291 tty.c_oflag |= OPOST;
1292 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1293 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1314 tty.c_cflag |= PARENB;
1317 tty.c_cflag |= PARENB | PARODD;
1321 tty.c_cflag |= CSTOPB;
1323 tcsetattr (fd, TCSANOW, &tty);
1326 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1328 FDCharDriver *s = chr->opaque;
1331 case CHR_IOCTL_SERIAL_SET_PARAMS:
1333 QEMUSerialSetParams *ssp = arg;
1334 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1335 ssp->speed, ssp->parity,
1336 ssp->data_bits, ssp->stop_bits);
1339 case CHR_IOCTL_SERIAL_SET_BREAK:
1341 int enable = *(int *)arg;
1343 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1347 case CHR_IOCTL_SERIAL_GET_TIOCM:
1350 int *targ = (int *)arg;
1351 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1353 if (sarg & TIOCM_CTS)
1354 *targ |= CHR_TIOCM_CTS;
1355 if (sarg & TIOCM_CAR)
1356 *targ |= CHR_TIOCM_CAR;
1357 if (sarg & TIOCM_DSR)
1358 *targ |= CHR_TIOCM_DSR;
1359 if (sarg & TIOCM_RI)
1360 *targ |= CHR_TIOCM_RI;
1361 if (sarg & TIOCM_DTR)
1362 *targ |= CHR_TIOCM_DTR;
1363 if (sarg & TIOCM_RTS)
1364 *targ |= CHR_TIOCM_RTS;
1367 case CHR_IOCTL_SERIAL_SET_TIOCM:
1369 int sarg = *(int *)arg;
1371 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1372 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1373 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1374 if (sarg & CHR_TIOCM_CTS)
1376 if (sarg & CHR_TIOCM_CAR)
1378 if (sarg & CHR_TIOCM_DSR)
1380 if (sarg & CHR_TIOCM_RI)
1382 if (sarg & CHR_TIOCM_DTR)
1384 if (sarg & CHR_TIOCM_RTS)
1386 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1395 static void qemu_chr_close_tty(CharDriverState *chr)
1397 FDCharDriver *s = chr->opaque;
1401 fd = g_io_channel_unix_get_fd(s->fd_in);
1411 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1413 CharDriverState *chr;
1415 tty_serial_init(fd, 115200, 'N', 8, 1);
1416 chr = qemu_chr_open_fd(fd, fd);
1417 chr->chr_ioctl = tty_serial_ioctl;
1418 chr->chr_close = qemu_chr_close_tty;
1421 #endif /* __linux__ || __sun__ */
1423 #if defined(__linux__)
1425 #define HAVE_CHARDEV_PARPORT 1
1430 } ParallelCharDriver;
1432 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1434 if (s->mode != mode) {
1436 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1443 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1445 ParallelCharDriver *drv = chr->opaque;
1450 case CHR_IOCTL_PP_READ_DATA:
1451 if (ioctl(fd, PPRDATA, &b) < 0)
1453 *(uint8_t *)arg = b;
1455 case CHR_IOCTL_PP_WRITE_DATA:
1456 b = *(uint8_t *)arg;
1457 if (ioctl(fd, PPWDATA, &b) < 0)
1460 case CHR_IOCTL_PP_READ_CONTROL:
1461 if (ioctl(fd, PPRCONTROL, &b) < 0)
1463 /* Linux gives only the lowest bits, and no way to know data
1464 direction! For better compatibility set the fixed upper
1466 *(uint8_t *)arg = b | 0xc0;
1468 case CHR_IOCTL_PP_WRITE_CONTROL:
1469 b = *(uint8_t *)arg;
1470 if (ioctl(fd, PPWCONTROL, &b) < 0)
1473 case CHR_IOCTL_PP_READ_STATUS:
1474 if (ioctl(fd, PPRSTATUS, &b) < 0)
1476 *(uint8_t *)arg = b;
1478 case CHR_IOCTL_PP_DATA_DIR:
1479 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1482 case CHR_IOCTL_PP_EPP_READ_ADDR:
1483 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1484 struct ParallelIOArg *parg = arg;
1485 int n = read(fd, parg->buffer, parg->count);
1486 if (n != parg->count) {
1491 case CHR_IOCTL_PP_EPP_READ:
1492 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1493 struct ParallelIOArg *parg = arg;
1494 int n = read(fd, parg->buffer, parg->count);
1495 if (n != parg->count) {
1500 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1501 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1502 struct ParallelIOArg *parg = arg;
1503 int n = write(fd, parg->buffer, parg->count);
1504 if (n != parg->count) {
1509 case CHR_IOCTL_PP_EPP_WRITE:
1510 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1511 struct ParallelIOArg *parg = arg;
1512 int n = write(fd, parg->buffer, parg->count);
1513 if (n != parg->count) {
1524 static void pp_close(CharDriverState *chr)
1526 ParallelCharDriver *drv = chr->opaque;
1529 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1530 ioctl(fd, PPRELEASE);
1533 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1536 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1538 CharDriverState *chr;
1539 ParallelCharDriver *drv;
1541 if (ioctl(fd, PPCLAIM) < 0) {
1546 drv = g_malloc0(sizeof(ParallelCharDriver));
1548 drv->mode = IEEE1284_MODE_COMPAT;
1550 chr = g_malloc0(sizeof(CharDriverState));
1551 chr->chr_write = null_chr_write;
1552 chr->chr_ioctl = pp_ioctl;
1553 chr->chr_close = pp_close;
1558 #endif /* __linux__ */
1560 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1562 #define HAVE_CHARDEV_PARPORT 1
1564 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1566 int fd = (int)(intptr_t)chr->opaque;
1570 case CHR_IOCTL_PP_READ_DATA:
1571 if (ioctl(fd, PPIGDATA, &b) < 0)
1573 *(uint8_t *)arg = b;
1575 case CHR_IOCTL_PP_WRITE_DATA:
1576 b = *(uint8_t *)arg;
1577 if (ioctl(fd, PPISDATA, &b) < 0)
1580 case CHR_IOCTL_PP_READ_CONTROL:
1581 if (ioctl(fd, PPIGCTRL, &b) < 0)
1583 *(uint8_t *)arg = b;
1585 case CHR_IOCTL_PP_WRITE_CONTROL:
1586 b = *(uint8_t *)arg;
1587 if (ioctl(fd, PPISCTRL, &b) < 0)
1590 case CHR_IOCTL_PP_READ_STATUS:
1591 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1593 *(uint8_t *)arg = b;
1601 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1603 CharDriverState *chr;
1605 chr = g_malloc0(sizeof(CharDriverState));
1606 chr->opaque = (void *)(intptr_t)fd;
1607 chr->chr_write = null_chr_write;
1608 chr->chr_ioctl = pp_ioctl;
1609 chr->explicit_be_open = true;
1618 HANDLE hcom, hrecv, hsend;
1619 OVERLAPPED orecv, osend;
1626 HANDLE hInputReadyEvent;
1627 HANDLE hInputDoneEvent;
1628 HANDLE hInputThread;
1629 uint8_t win_stdio_buf;
1630 } WinStdioCharState;
1632 #define NSENDBUF 2048
1633 #define NRECVBUF 2048
1634 #define MAXCONNECT 1
1635 #define NTIMEOUT 5000
1637 static int win_chr_poll(void *opaque);
1638 static int win_chr_pipe_poll(void *opaque);
1640 static void win_chr_close(CharDriverState *chr)
1642 WinCharState *s = chr->opaque;
1645 CloseHandle(s->hsend);
1649 CloseHandle(s->hrecv);
1653 CloseHandle(s->hcom);
1657 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1659 qemu_del_polling_cb(win_chr_poll, chr);
1661 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1664 static int win_chr_init(CharDriverState *chr, const char *filename)
1666 WinCharState *s = chr->opaque;
1668 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1673 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1675 fprintf(stderr, "Failed CreateEvent\n");
1678 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1680 fprintf(stderr, "Failed CreateEvent\n");
1684 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1685 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1686 if (s->hcom == INVALID_HANDLE_VALUE) {
1687 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1692 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1693 fprintf(stderr, "Failed SetupComm\n");
1697 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1698 size = sizeof(COMMCONFIG);
1699 GetDefaultCommConfig(filename, &comcfg, &size);
1700 comcfg.dcb.DCBlength = sizeof(DCB);
1701 CommConfigDialog(filename, NULL, &comcfg);
1703 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1704 fprintf(stderr, "Failed SetCommState\n");
1708 if (!SetCommMask(s->hcom, EV_ERR)) {
1709 fprintf(stderr, "Failed SetCommMask\n");
1713 cto.ReadIntervalTimeout = MAXDWORD;
1714 if (!SetCommTimeouts(s->hcom, &cto)) {
1715 fprintf(stderr, "Failed SetCommTimeouts\n");
1719 if (!ClearCommError(s->hcom, &err, &comstat)) {
1720 fprintf(stderr, "Failed ClearCommError\n");
1723 qemu_add_polling_cb(win_chr_poll, chr);
1731 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1733 WinCharState *s = chr->opaque;
1734 DWORD len, ret, size, err;
1737 ZeroMemory(&s->osend, sizeof(s->osend));
1738 s->osend.hEvent = s->hsend;
1741 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1743 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1745 err = GetLastError();
1746 if (err == ERROR_IO_PENDING) {
1747 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1765 static int win_chr_read_poll(CharDriverState *chr)
1767 WinCharState *s = chr->opaque;
1769 s->max_size = qemu_chr_be_can_write(chr);
1773 static void win_chr_readfile(CharDriverState *chr)
1775 WinCharState *s = chr->opaque;
1777 uint8_t buf[READ_BUF_LEN];
1780 ZeroMemory(&s->orecv, sizeof(s->orecv));
1781 s->orecv.hEvent = s->hrecv;
1782 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1784 err = GetLastError();
1785 if (err == ERROR_IO_PENDING) {
1786 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1791 qemu_chr_be_write(chr, buf, size);
1795 static void win_chr_read(CharDriverState *chr)
1797 WinCharState *s = chr->opaque;
1799 if (s->len > s->max_size)
1800 s->len = s->max_size;
1804 win_chr_readfile(chr);
1807 static int win_chr_poll(void *opaque)
1809 CharDriverState *chr = opaque;
1810 WinCharState *s = chr->opaque;
1814 ClearCommError(s->hcom, &comerr, &status);
1815 if (status.cbInQue > 0) {
1816 s->len = status.cbInQue;
1817 win_chr_read_poll(chr);
1824 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1826 CharDriverState *chr;
1829 chr = g_malloc0(sizeof(CharDriverState));
1830 s = g_malloc0(sizeof(WinCharState));
1832 chr->chr_write = win_chr_write;
1833 chr->chr_close = win_chr_close;
1835 if (win_chr_init(chr, filename) < 0) {
1843 static int win_chr_pipe_poll(void *opaque)
1845 CharDriverState *chr = opaque;
1846 WinCharState *s = chr->opaque;
1849 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1852 win_chr_read_poll(chr);
1859 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1861 WinCharState *s = chr->opaque;
1869 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1871 fprintf(stderr, "Failed CreateEvent\n");
1874 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1876 fprintf(stderr, "Failed CreateEvent\n");
1880 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1881 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1882 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1884 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1885 if (s->hcom == INVALID_HANDLE_VALUE) {
1886 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1891 ZeroMemory(&ov, sizeof(ov));
1892 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1893 ret = ConnectNamedPipe(s->hcom, &ov);
1895 fprintf(stderr, "Failed ConnectNamedPipe\n");
1899 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1901 fprintf(stderr, "Failed GetOverlappedResult\n");
1903 CloseHandle(ov.hEvent);
1910 CloseHandle(ov.hEvent);
1913 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1922 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1924 const char *filename = opts->device;
1925 CharDriverState *chr;
1928 chr = g_malloc0(sizeof(CharDriverState));
1929 s = g_malloc0(sizeof(WinCharState));
1931 chr->chr_write = win_chr_write;
1932 chr->chr_close = win_chr_close;
1934 if (win_chr_pipe_init(chr, filename) < 0) {
1942 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1944 CharDriverState *chr;
1947 chr = g_malloc0(sizeof(CharDriverState));
1948 s = g_malloc0(sizeof(WinCharState));
1951 chr->chr_write = win_chr_write;
1955 static CharDriverState *qemu_chr_open_win_con(void)
1957 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1960 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1962 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1969 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1979 static void win_stdio_wait_func(void *opaque)
1981 CharDriverState *chr = opaque;
1982 WinStdioCharState *stdio = chr->opaque;
1983 INPUT_RECORD buf[4];
1988 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1992 /* Avoid error storm */
1993 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1997 for (i = 0; i < dwSize; i++) {
1998 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2000 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2002 if (kev->uChar.AsciiChar != 0) {
2003 for (j = 0; j < kev->wRepeatCount; j++) {
2004 if (qemu_chr_be_can_write(chr)) {
2005 uint8_t c = kev->uChar.AsciiChar;
2006 qemu_chr_be_write(chr, &c, 1);
2014 static DWORD WINAPI win_stdio_thread(LPVOID param)
2016 CharDriverState *chr = param;
2017 WinStdioCharState *stdio = chr->opaque;
2023 /* Wait for one byte */
2024 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2026 /* Exit in case of error, continue if nothing read */
2034 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2035 if (stdio->win_stdio_buf == '\r') {
2039 /* Signal the main thread and wait until the byte was eaten */
2040 if (!SetEvent(stdio->hInputReadyEvent)) {
2043 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2049 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2053 static void win_stdio_thread_wait_func(void *opaque)
2055 CharDriverState *chr = opaque;
2056 WinStdioCharState *stdio = chr->opaque;
2058 if (qemu_chr_be_can_write(chr)) {
2059 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2062 SetEvent(stdio->hInputDoneEvent);
2065 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2067 WinStdioCharState *stdio = chr->opaque;
2070 GetConsoleMode(stdio->hStdIn, &dwMode);
2073 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2075 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2079 static void win_stdio_close(CharDriverState *chr)
2081 WinStdioCharState *stdio = chr->opaque;
2083 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2084 CloseHandle(stdio->hInputReadyEvent);
2086 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2087 CloseHandle(stdio->hInputDoneEvent);
2089 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2090 TerminateThread(stdio->hInputThread, 0);
2093 g_free(chr->opaque);
2097 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2099 CharDriverState *chr;
2100 WinStdioCharState *stdio;
2104 chr = g_malloc0(sizeof(CharDriverState));
2105 stdio = g_malloc0(sizeof(WinStdioCharState));
2107 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2108 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2109 fprintf(stderr, "cannot open stdio: invalid handle\n");
2113 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2115 chr->opaque = stdio;
2116 chr->chr_write = win_stdio_write;
2117 chr->chr_close = win_stdio_close;
2120 if (qemu_add_wait_object(stdio->hStdIn,
2121 win_stdio_wait_func, chr)) {
2122 fprintf(stderr, "qemu_add_wait_object: failed\n");
2127 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2128 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2129 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2132 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2133 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2134 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2135 fprintf(stderr, "cannot create stdio thread or event\n");
2138 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2139 win_stdio_thread_wait_func, chr)) {
2140 fprintf(stderr, "qemu_add_wait_object: failed\n");
2144 dwMode |= ENABLE_LINE_INPUT;
2147 /* set the terminal in raw mode */
2148 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2149 dwMode |= ENABLE_PROCESSED_INPUT;
2152 SetConsoleMode(stdio->hStdIn, dwMode);
2154 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2155 qemu_chr_fe_set_echo(chr, false);
2159 #endif /* !_WIN32 */
2162 /***********************************************************/
2163 /* UDP Net console */
2169 uint8_t buf[READ_BUF_LEN];
2175 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2177 NetCharDriver *s = chr->opaque;
2178 gsize bytes_written;
2181 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2182 if (status == G_IO_STATUS_EOF) {
2184 } else if (status != G_IO_STATUS_NORMAL) {
2188 return bytes_written;
2191 static int udp_chr_read_poll(void *opaque)
2193 CharDriverState *chr = opaque;
2194 NetCharDriver *s = chr->opaque;
2196 s->max_size = qemu_chr_be_can_write(chr);
2198 /* If there were any stray characters in the queue process them
2201 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2202 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2204 s->max_size = qemu_chr_be_can_write(chr);
2209 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2211 CharDriverState *chr = opaque;
2212 NetCharDriver *s = chr->opaque;
2213 gsize bytes_read = 0;
2216 if (s->max_size == 0) {
2219 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2221 s->bufcnt = bytes_read;
2222 s->bufptr = s->bufcnt;
2223 if (status != G_IO_STATUS_NORMAL) {
2225 io_remove_watch_poll(s->tag);
2232 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2233 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2235 s->max_size = qemu_chr_be_can_write(chr);
2241 static void udp_chr_update_read_handler(CharDriverState *chr)
2243 NetCharDriver *s = chr->opaque;
2246 io_remove_watch_poll(s->tag);
2251 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2255 static void udp_chr_close(CharDriverState *chr)
2257 NetCharDriver *s = chr->opaque;
2259 io_remove_watch_poll(s->tag);
2263 g_io_channel_unref(s->chan);
2267 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2270 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2272 CharDriverState *chr = NULL;
2273 NetCharDriver *s = NULL;
2275 chr = g_malloc0(sizeof(CharDriverState));
2276 s = g_malloc0(sizeof(NetCharDriver));
2279 s->chan = io_channel_from_socket(s->fd);
2283 chr->chr_write = udp_chr_write;
2284 chr->chr_update_read_handler = udp_chr_update_read_handler;
2285 chr->chr_close = udp_chr_close;
2286 /* be isn't opened until we get a connection */
2287 chr->explicit_be_open = true;
2291 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2293 Error *local_err = NULL;
2296 fd = inet_dgram_opts(opts, &local_err);
2298 qerror_report_err(local_err);
2299 error_free(local_err);
2302 return qemu_chr_open_udp_fd(fd);
2305 /***********************************************************/
2306 /* TCP Net console */
2310 GIOChannel *chan, *listen_chan;
2311 guint tag, listen_tag;
2321 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2323 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2325 TCPCharDriver *s = chr->opaque;
2327 return io_channel_send(s->chan, buf, len);
2329 /* XXX: indicate an error ? */
2334 static int tcp_chr_read_poll(void *opaque)
2336 CharDriverState *chr = opaque;
2337 TCPCharDriver *s = chr->opaque;
2340 s->max_size = qemu_chr_be_can_write(chr);
2345 #define IAC_BREAK 243
2346 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2348 uint8_t *buf, int *size)
2350 /* Handle any telnet client's basic IAC options to satisfy char by
2351 * char mode with no echo. All IAC options will be removed from
2352 * the buf and the do_telnetopt variable will be used to track the
2353 * state of the width of the IAC information.
2355 * IAC commands come in sets of 3 bytes with the exception of the
2356 * "IAC BREAK" command and the double IAC.
2362 for (i = 0; i < *size; i++) {
2363 if (s->do_telnetopt > 1) {
2364 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2365 /* Double IAC means send an IAC */
2369 s->do_telnetopt = 1;
2371 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2372 /* Handle IAC break commands by sending a serial break */
2373 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2378 if (s->do_telnetopt >= 4) {
2379 s->do_telnetopt = 1;
2382 if ((unsigned char)buf[i] == IAC) {
2383 s->do_telnetopt = 2;
2394 static int tcp_get_msgfd(CharDriverState *chr)
2396 TCPCharDriver *s = chr->opaque;
2403 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2405 TCPCharDriver *s = chr->opaque;
2406 struct cmsghdr *cmsg;
2408 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2411 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2412 cmsg->cmsg_level != SOL_SOCKET ||
2413 cmsg->cmsg_type != SCM_RIGHTS)
2416 fd = *((int *)CMSG_DATA(cmsg));
2420 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2423 #ifndef MSG_CMSG_CLOEXEC
2424 qemu_set_cloexec(fd);
2432 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2434 TCPCharDriver *s = chr->opaque;
2435 struct msghdr msg = { NULL, };
2436 struct iovec iov[1];
2438 struct cmsghdr cmsg;
2439 char control[CMSG_SPACE(sizeof(int))];
2444 iov[0].iov_base = buf;
2445 iov[0].iov_len = len;
2449 msg.msg_control = &msg_control;
2450 msg.msg_controllen = sizeof(msg_control);
2452 #ifdef MSG_CMSG_CLOEXEC
2453 flags |= MSG_CMSG_CLOEXEC;
2455 ret = recvmsg(s->fd, &msg, flags);
2456 if (ret > 0 && s->is_unix) {
2457 unix_process_msgfd(chr, &msg);
2463 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2465 TCPCharDriver *s = chr->opaque;
2466 return qemu_recv(s->fd, buf, len, 0);
2470 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2472 TCPCharDriver *s = chr->opaque;
2473 return g_io_create_watch(s->chan, cond);
2476 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2478 CharDriverState *chr = opaque;
2479 TCPCharDriver *s = chr->opaque;
2480 uint8_t buf[READ_BUF_LEN];
2483 if (!s->connected || s->max_size <= 0) {
2487 if (len > s->max_size)
2489 size = tcp_chr_recv(chr, (void *)buf, len);
2491 /* connection closed */
2493 if (s->listen_chan) {
2494 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2497 io_remove_watch_poll(s->tag);
2500 g_io_channel_unref(s->chan);
2504 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2505 } else if (size > 0) {
2506 if (s->do_telnetopt)
2507 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2509 qemu_chr_be_write(chr, buf, size);
2516 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2518 return qemu_chr_open_fd(eventfd, eventfd);
2522 static void tcp_chr_connect(void *opaque)
2524 CharDriverState *chr = opaque;
2525 TCPCharDriver *s = chr->opaque;
2529 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2531 qemu_chr_be_generic_open(chr);
2534 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2535 static void tcp_chr_telnet_init(int fd)
2538 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2539 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2540 send(fd, (char *)buf, 3, 0);
2541 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2542 send(fd, (char *)buf, 3, 0);
2543 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2544 send(fd, (char *)buf, 3, 0);
2545 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2546 send(fd, (char *)buf, 3, 0);
2549 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2551 TCPCharDriver *s = chr->opaque;
2555 qemu_set_nonblock(fd);
2557 socket_set_nodelay(fd);
2559 s->chan = io_channel_from_socket(fd);
2560 if (s->listen_tag) {
2561 g_source_remove(s->listen_tag);
2564 tcp_chr_connect(chr);
2569 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2571 CharDriverState *chr = opaque;
2572 TCPCharDriver *s = chr->opaque;
2573 struct sockaddr_in saddr;
2575 struct sockaddr_un uaddr;
2577 struct sockaddr *addr;
2584 len = sizeof(uaddr);
2585 addr = (struct sockaddr *)&uaddr;
2589 len = sizeof(saddr);
2590 addr = (struct sockaddr *)&saddr;
2592 fd = qemu_accept(s->listen_fd, addr, &len);
2593 if (fd < 0 && errno != EINTR) {
2596 } else if (fd >= 0) {
2597 if (s->do_telnetopt)
2598 tcp_chr_telnet_init(fd);
2602 if (tcp_chr_add_client(chr, fd) < 0)
2608 static void tcp_chr_close(CharDriverState *chr)
2610 TCPCharDriver *s = chr->opaque;
2613 io_remove_watch_poll(s->tag);
2617 g_io_channel_unref(s->chan);
2621 if (s->listen_fd >= 0) {
2622 if (s->listen_tag) {
2623 g_source_remove(s->listen_tag);
2626 if (s->listen_chan) {
2627 g_io_channel_unref(s->listen_chan);
2629 closesocket(s->listen_fd);
2632 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2635 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2636 bool is_listen, bool is_telnet,
2637 bool is_waitconnect,
2640 CharDriverState *chr = NULL;
2641 TCPCharDriver *s = NULL;
2642 char host[NI_MAXHOST], serv[NI_MAXSERV];
2643 const char *left = "", *right = "";
2644 struct sockaddr_storage ss;
2645 socklen_t ss_len = sizeof(ss);
2647 memset(&ss, 0, ss_len);
2648 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2649 error_setg_errno(errp, errno, "getsockname");
2653 chr = g_malloc0(sizeof(CharDriverState));
2654 s = g_malloc0(sizeof(TCPCharDriver));
2661 chr->filename = g_malloc(256);
2662 switch (ss.ss_family) {
2666 snprintf(chr->filename, 256, "unix:%s%s",
2667 ((struct sockaddr_un *)(&ss))->sun_path,
2668 is_listen ? ",server" : "");
2676 s->do_nodelay = do_nodelay;
2677 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2678 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2679 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2680 is_telnet ? "telnet" : "tcp",
2681 left, host, right, serv,
2682 is_listen ? ",server" : "");
2687 chr->chr_write = tcp_chr_write;
2688 chr->chr_close = tcp_chr_close;
2689 chr->get_msgfd = tcp_get_msgfd;
2690 chr->chr_add_client = tcp_chr_add_client;
2691 chr->chr_add_watch = tcp_chr_add_watch;
2692 /* be isn't opened until we get a connection */
2693 chr->explicit_be_open = true;
2697 s->listen_chan = io_channel_from_socket(s->listen_fd);
2698 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2700 s->do_telnetopt = 1;
2705 socket_set_nodelay(fd);
2706 s->chan = io_channel_from_socket(s->fd);
2707 tcp_chr_connect(chr);
2710 if (is_listen && is_waitconnect) {
2711 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2713 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2714 qemu_set_nonblock(s->listen_fd);
2719 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2721 CharDriverState *chr = NULL;
2722 Error *local_err = NULL;
2725 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2726 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2727 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2728 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2729 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2733 fd = unix_listen_opts(opts, &local_err);
2735 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2739 fd = inet_listen_opts(opts, 0, &local_err);
2741 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2748 if (!is_waitconnect)
2749 qemu_set_nonblock(fd);
2751 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2752 is_waitconnect, &local_err);
2753 if (error_is_set(&local_err)) {
2761 qerror_report_err(local_err);
2762 error_free(local_err);
2768 g_free(chr->opaque);
2774 /*********************************************************/
2775 /* Ring buffer chardev */
2782 } RingBufCharDriver;
2784 static size_t ringbuf_count(const CharDriverState *chr)
2786 const RingBufCharDriver *d = chr->opaque;
2788 return d->prod - d->cons;
2791 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2793 RingBufCharDriver *d = chr->opaque;
2796 if (!buf || (len < 0)) {
2800 for (i = 0; i < len; i++ ) {
2801 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2802 if (d->prod - d->cons > d->size) {
2803 d->cons = d->prod - d->size;
2810 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2812 RingBufCharDriver *d = chr->opaque;
2815 for (i = 0; i < len && d->cons != d->prod; i++) {
2816 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2822 static void ringbuf_chr_close(struct CharDriverState *chr)
2824 RingBufCharDriver *d = chr->opaque;
2831 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2834 CharDriverState *chr;
2835 RingBufCharDriver *d;
2837 chr = g_malloc0(sizeof(CharDriverState));
2838 d = g_malloc(sizeof(*d));
2840 d->size = opts->has_size ? opts->size : 65536;
2842 /* The size must be power of 2 */
2843 if (d->size & (d->size - 1)) {
2844 error_setg(errp, "size of ringbuf chardev must be power of two");
2850 d->cbuf = g_malloc0(d->size);
2853 chr->chr_write = ringbuf_chr_write;
2854 chr->chr_close = ringbuf_chr_close;
2864 static bool chr_is_ringbuf(const CharDriverState *chr)
2866 return chr->chr_write == ringbuf_chr_write;
2869 void qmp_ringbuf_write(const char *device, const char *data,
2870 bool has_format, enum DataFormat format,
2873 CharDriverState *chr;
2874 const uint8_t *write_data;
2878 chr = qemu_chr_find(device);
2880 error_setg(errp, "Device '%s' not found", device);
2884 if (!chr_is_ringbuf(chr)) {
2885 error_setg(errp,"%s is not a ringbuf device", device);
2889 if (has_format && (format == DATA_FORMAT_BASE64)) {
2890 write_data = g_base64_decode(data, &write_count);
2892 write_data = (uint8_t *)data;
2893 write_count = strlen(data);
2896 ret = ringbuf_chr_write(chr, write_data, write_count);
2898 if (write_data != (uint8_t *)data) {
2899 g_free((void *)write_data);
2903 error_setg(errp, "Failed to write to device %s", device);
2908 char *qmp_ringbuf_read(const char *device, int64_t size,
2909 bool has_format, enum DataFormat format,
2912 CharDriverState *chr;
2917 chr = qemu_chr_find(device);
2919 error_setg(errp, "Device '%s' not found", device);
2923 if (!chr_is_ringbuf(chr)) {
2924 error_setg(errp,"%s is not a ringbuf device", device);
2929 error_setg(errp, "size must be greater than zero");
2933 count = ringbuf_count(chr);
2934 size = size > count ? count : size;
2935 read_data = g_malloc(size + 1);
2937 ringbuf_chr_read(chr, read_data, size);
2939 if (has_format && (format == DATA_FORMAT_BASE64)) {
2940 data = g_base64_encode(read_data, size);
2944 * FIXME should read only complete, valid UTF-8 characters up
2945 * to @size bytes. Invalid sequences should be replaced by a
2946 * suitable replacement character. Except when (and only
2947 * when) ring buffer lost characters since last read, initial
2948 * continuation characters should be dropped.
2950 read_data[size] = 0;
2951 data = (char *)read_data;
2957 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2959 char host[65], port[33], width[8], height[8];
2963 Error *local_err = NULL;
2965 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2966 if (error_is_set(&local_err)) {
2967 qerror_report_err(local_err);
2968 error_free(local_err);
2972 if (strstart(filename, "mon:", &p)) {
2974 qemu_opt_set(opts, "mux", "on");
2975 if (strcmp(filename, "stdio") == 0) {
2976 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
2977 * but pass it to the guest. Handle this only for compat syntax,
2978 * for -chardev syntax we have special option for this.
2979 * This is what -nographic did, redirecting+muxing serial+monitor
2980 * to stdio causing Ctrl+C to be passed to guest. */
2981 qemu_opt_set(opts, "signal", "off");
2985 if (strcmp(filename, "null") == 0 ||
2986 strcmp(filename, "pty") == 0 ||
2987 strcmp(filename, "msmouse") == 0 ||
2988 strcmp(filename, "braille") == 0 ||
2989 strcmp(filename, "stdio") == 0) {
2990 qemu_opt_set(opts, "backend", filename);
2993 if (strstart(filename, "vc", &p)) {
2994 qemu_opt_set(opts, "backend", "vc");
2996 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2998 qemu_opt_set(opts, "width", width);
2999 qemu_opt_set(opts, "height", height);
3000 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3002 qemu_opt_set(opts, "cols", width);
3003 qemu_opt_set(opts, "rows", height);
3010 if (strcmp(filename, "con:") == 0) {
3011 qemu_opt_set(opts, "backend", "console");
3014 if (strstart(filename, "COM", NULL)) {
3015 qemu_opt_set(opts, "backend", "serial");
3016 qemu_opt_set(opts, "path", filename);
3019 if (strstart(filename, "file:", &p)) {
3020 qemu_opt_set(opts, "backend", "file");
3021 qemu_opt_set(opts, "path", p);
3024 if (strstart(filename, "pipe:", &p)) {
3025 qemu_opt_set(opts, "backend", "pipe");
3026 qemu_opt_set(opts, "path", p);
3029 if (strstart(filename, "tcp:", &p) ||
3030 strstart(filename, "telnet:", &p)) {
3031 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3033 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3036 qemu_opt_set(opts, "backend", "socket");
3037 qemu_opt_set(opts, "host", host);
3038 qemu_opt_set(opts, "port", port);
3039 if (p[pos] == ',') {
3040 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3043 if (strstart(filename, "telnet:", &p))
3044 qemu_opt_set(opts, "telnet", "on");
3047 if (strstart(filename, "udp:", &p)) {
3048 qemu_opt_set(opts, "backend", "udp");
3049 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3051 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3055 qemu_opt_set(opts, "host", host);
3056 qemu_opt_set(opts, "port", port);
3057 if (p[pos] == '@') {
3059 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3061 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3065 qemu_opt_set(opts, "localaddr", host);
3066 qemu_opt_set(opts, "localport", port);
3070 if (strstart(filename, "unix:", &p)) {
3071 qemu_opt_set(opts, "backend", "socket");
3072 if (qemu_opts_do_parse(opts, p, "path") != 0)
3076 if (strstart(filename, "/dev/parport", NULL) ||
3077 strstart(filename, "/dev/ppi", NULL)) {
3078 qemu_opt_set(opts, "backend", "parport");
3079 qemu_opt_set(opts, "path", filename);
3082 if (strstart(filename, "/dev/", NULL)) {
3083 qemu_opt_set(opts, "backend", "tty");
3084 qemu_opt_set(opts, "path", filename);
3089 qemu_opts_del(opts);
3093 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3096 const char *path = qemu_opt_get(opts, "path");
3099 error_setg(errp, "chardev: file: no filename given");
3102 backend->file = g_new0(ChardevFile, 1);
3103 backend->file->out = g_strdup(path);
3106 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3109 backend->stdio = g_new0(ChardevStdio, 1);
3110 backend->stdio->has_signal = true;
3111 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3114 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3117 const char *device = qemu_opt_get(opts, "path");
3119 if (device == NULL) {
3120 error_setg(errp, "chardev: serial/tty: no device path given");
3123 backend->serial = g_new0(ChardevHostdev, 1);
3124 backend->serial->device = g_strdup(device);
3127 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3130 const char *device = qemu_opt_get(opts, "path");
3132 if (device == NULL) {
3133 error_setg(errp, "chardev: parallel: no device path given");
3136 backend->parallel = g_new0(ChardevHostdev, 1);
3137 backend->parallel->device = g_strdup(device);
3140 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3143 const char *device = qemu_opt_get(opts, "path");
3145 if (device == NULL) {
3146 error_setg(errp, "chardev: pipe: no device path given");
3149 backend->pipe = g_new0(ChardevHostdev, 1);
3150 backend->pipe->device = g_strdup(device);
3153 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3158 backend->ringbuf = g_new0(ChardevRingbuf, 1);
3160 val = qemu_opt_get_size(opts, "size", 0);
3162 backend->ringbuf->has_size = true;
3163 backend->ringbuf->size = val;
3167 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3170 const char *chardev = qemu_opt_get(opts, "chardev");
3172 if (chardev == NULL) {
3173 error_setg(errp, "chardev: mux: no chardev given");
3176 backend->mux = g_new0(ChardevMux, 1);
3177 backend->mux->chardev = g_strdup(chardev);
3180 typedef struct CharDriver {
3183 CharDriverState *(*open)(QemuOpts *opts);
3184 /* new, qapi-based */
3185 ChardevBackendKind kind;
3186 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3189 static GSList *backends;
3191 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3195 s = g_malloc0(sizeof(*s));
3196 s->name = g_strdup(name);
3199 backends = g_slist_append(backends, s);
3202 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3203 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3207 s = g_malloc0(sizeof(*s));
3208 s->name = g_strdup(name);
3212 backends = g_slist_append(backends, s);
3215 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3216 void (*init)(struct CharDriverState *s),
3220 CharDriverState *chr;
3223 if (qemu_opts_id(opts) == NULL) {
3224 error_setg(errp, "chardev: no id specified");
3228 if (qemu_opt_get(opts, "backend") == NULL) {
3229 error_setg(errp, "chardev: \"%s\" missing backend",
3230 qemu_opts_id(opts));
3233 for (i = backends; i; i = i->next) {
3236 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3241 error_setg(errp, "chardev: backend \"%s\" not found",
3242 qemu_opt_get(opts, "backend"));
3247 /* using new, qapi init */
3248 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3249 ChardevReturn *ret = NULL;
3250 const char *id = qemu_opts_id(opts);
3253 if (qemu_opt_get_bool(opts, "mux", 0)) {
3254 bid = g_strdup_printf("%s-base", id);
3258 backend->kind = cd->kind;
3260 cd->parse(opts, backend, errp);
3261 if (error_is_set(errp)) {
3265 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3266 if (error_is_set(errp)) {
3271 qapi_free_ChardevBackend(backend);
3272 qapi_free_ChardevReturn(ret);
3273 backend = g_new0(ChardevBackend, 1);
3274 backend->mux = g_new0(ChardevMux, 1);
3275 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3276 backend->mux->chardev = g_strdup(bid);
3277 ret = qmp_chardev_add(id, backend, errp);
3278 assert(!error_is_set(errp));
3281 chr = qemu_chr_find(id);
3285 qapi_free_ChardevBackend(backend);
3286 qapi_free_ChardevReturn(ret);
3291 chr = cd->open(opts);
3293 error_setg(errp, "chardev: opening backend \"%s\" failed",
3294 qemu_opt_get(opts, "backend"));
3299 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3301 /* if we didn't create the chardev via qmp_chardev_add, we
3302 * need to send the OPENED event here
3304 if (!chr->explicit_be_open) {
3305 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3307 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3309 if (qemu_opt_get_bool(opts, "mux", 0)) {
3310 CharDriverState *base = chr;
3311 int len = strlen(qemu_opts_id(opts)) + 6;
3312 base->label = g_malloc(len);
3313 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3314 chr = qemu_chr_open_mux(base);
3315 chr->filename = base->filename;
3316 chr->avail_connections = MAX_MUX;
3317 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3319 chr->avail_connections = 1;
3321 chr->label = g_strdup(qemu_opts_id(opts));
3326 qemu_opts_del(opts);
3330 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3333 CharDriverState *chr;
3337 if (strstart(filename, "chardev:", &p)) {
3338 return qemu_chr_find(p);
3341 opts = qemu_chr_parse_compat(label, filename);
3345 chr = qemu_chr_new_from_opts(opts, init, &err);
3346 if (error_is_set(&err)) {
3347 fprintf(stderr, "%s\n", error_get_pretty(err));
3350 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3351 qemu_chr_fe_claim_no_fail(chr);
3352 monitor_init(chr, MONITOR_USE_READLINE);
3357 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3359 if (chr->chr_set_echo) {
3360 chr->chr_set_echo(chr, echo);
3364 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3366 if (chr->fe_open == fe_open) {
3369 chr->fe_open = fe_open;
3370 if (chr->chr_set_fe_open) {
3371 chr->chr_set_fe_open(chr, fe_open);
3375 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3376 GIOFunc func, void *user_data)
3381 if (s->chr_add_watch == NULL) {
3385 src = s->chr_add_watch(s, cond);
3386 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3387 tag = g_source_attach(src, NULL);
3388 g_source_unref(src);
3393 int qemu_chr_fe_claim(CharDriverState *s)
3395 if (s->avail_connections < 1) {
3398 s->avail_connections--;
3402 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3404 if (qemu_chr_fe_claim(s) != 0) {
3405 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3406 __func__, s->label);
3411 void qemu_chr_fe_release(CharDriverState *s)
3413 s->avail_connections++;
3416 void qemu_chr_delete(CharDriverState *chr)
3418 QTAILQ_REMOVE(&chardevs, chr, next);
3419 if (chr->chr_close) {
3420 chr->chr_close(chr);
3422 g_free(chr->filename);
3425 qemu_opts_del(chr->opts);
3430 ChardevInfoList *qmp_query_chardev(Error **errp)
3432 ChardevInfoList *chr_list = NULL;
3433 CharDriverState *chr;
3435 QTAILQ_FOREACH(chr, &chardevs, next) {
3436 ChardevInfoList *info = g_malloc0(sizeof(*info));
3437 info->value = g_malloc0(sizeof(*info->value));
3438 info->value->label = g_strdup(chr->label);
3439 info->value->filename = g_strdup(chr->filename);
3441 info->next = chr_list;
3448 CharDriverState *qemu_chr_find(const char *name)
3450 CharDriverState *chr;
3452 QTAILQ_FOREACH(chr, &chardevs, next) {
3453 if (strcmp(chr->label, name) != 0)
3460 /* Get a character (serial) device interface. */
3461 CharDriverState *qemu_char_get_next_serial(void)
3463 static int next_serial;
3464 CharDriverState *chr;
3466 /* FIXME: This function needs to go away: use chardev properties! */
3468 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3469 chr = serial_hds[next_serial++];
3470 qemu_chr_fe_claim_no_fail(chr);
3476 QemuOptsList qemu_chardev_opts = {
3478 .implied_opt_name = "backend",
3479 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3483 .type = QEMU_OPT_STRING,
3486 .type = QEMU_OPT_STRING,
3489 .type = QEMU_OPT_STRING,
3492 .type = QEMU_OPT_STRING,
3494 .name = "localaddr",
3495 .type = QEMU_OPT_STRING,
3497 .name = "localport",
3498 .type = QEMU_OPT_STRING,
3501 .type = QEMU_OPT_NUMBER,
3504 .type = QEMU_OPT_BOOL,
3507 .type = QEMU_OPT_BOOL,
3510 .type = QEMU_OPT_BOOL,
3513 .type = QEMU_OPT_BOOL,
3516 .type = QEMU_OPT_BOOL,
3519 .type = QEMU_OPT_BOOL,
3522 .type = QEMU_OPT_NUMBER,
3525 .type = QEMU_OPT_NUMBER,
3528 .type = QEMU_OPT_NUMBER,
3531 .type = QEMU_OPT_NUMBER,
3534 .type = QEMU_OPT_BOOL,
3537 .type = QEMU_OPT_BOOL,
3540 .type = QEMU_OPT_STRING,
3543 .type = QEMU_OPT_NUMBER,
3546 .type = QEMU_OPT_SIZE,
3549 .type = QEMU_OPT_STRING,
3551 { /* end of list */ }
3557 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3562 error_setg(errp, "input file not supported");
3566 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3567 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3568 if (out == INVALID_HANDLE_VALUE) {
3569 error_setg(errp, "open %s failed", file->out);
3572 return qemu_chr_open_win_file(out);
3575 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3578 return qemu_chr_open_win_path(serial->device);
3581 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3584 error_setg(errp, "character device backend type 'parallel' not supported");
3590 static int qmp_chardev_open_file_source(char *src, int flags,
3595 TFR(fd = qemu_open(src, flags, 0666));
3597 error_setg_file_open(errp, errno, src);
3602 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3604 int flags, in = -1, out = -1;
3606 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3607 out = qmp_chardev_open_file_source(file->out, flags, errp);
3608 if (error_is_set(errp)) {
3614 in = qmp_chardev_open_file_source(file->in, flags, errp);
3615 if (error_is_set(errp)) {
3621 return qemu_chr_open_fd(in, out);
3624 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3627 #ifdef HAVE_CHARDEV_TTY
3630 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3631 if (error_is_set(errp)) {
3634 qemu_set_nonblock(fd);
3635 return qemu_chr_open_tty_fd(fd);
3637 error_setg(errp, "character device backend type 'serial' not supported");
3642 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3645 #ifdef HAVE_CHARDEV_PARPORT
3648 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3649 if (error_is_set(errp)) {
3652 return qemu_chr_open_pp_fd(fd);
3654 error_setg(errp, "character device backend type 'parallel' not supported");
3661 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3664 SocketAddress *addr = sock->addr;
3665 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3666 bool is_listen = sock->has_server ? sock->server : true;
3667 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3668 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3672 fd = socket_listen(addr, errp);
3674 fd = socket_connect(addr, errp, NULL, NULL);
3676 if (error_is_set(errp)) {
3679 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3680 is_telnet, is_waitconnect, errp);
3683 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3688 fd = socket_dgram(udp->remote, udp->local, errp);
3689 if (error_is_set(errp)) {
3692 return qemu_chr_open_udp_fd(fd);
3695 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3698 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3699 CharDriverState *base, *chr = NULL;
3701 chr = qemu_chr_find(id);
3703 error_setg(errp, "Chardev '%s' already exists", id);
3708 switch (backend->kind) {
3709 case CHARDEV_BACKEND_KIND_FILE:
3710 chr = qmp_chardev_open_file(backend->file, errp);
3712 case CHARDEV_BACKEND_KIND_SERIAL:
3713 chr = qmp_chardev_open_serial(backend->serial, errp);
3715 case CHARDEV_BACKEND_KIND_PARALLEL:
3716 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3718 case CHARDEV_BACKEND_KIND_PIPE:
3719 chr = qemu_chr_open_pipe(backend->pipe);
3721 case CHARDEV_BACKEND_KIND_SOCKET:
3722 chr = qmp_chardev_open_socket(backend->socket, errp);
3724 case CHARDEV_BACKEND_KIND_UDP:
3725 chr = qmp_chardev_open_udp(backend->udp, errp);
3727 #ifdef HAVE_CHARDEV_TTY
3728 case CHARDEV_BACKEND_KIND_PTY:
3729 chr = qemu_chr_open_pty(id, ret);
3732 case CHARDEV_BACKEND_KIND_NULL:
3733 chr = qemu_chr_open_null();
3735 case CHARDEV_BACKEND_KIND_MUX:
3736 base = qemu_chr_find(backend->mux->chardev);
3738 error_setg(errp, "mux: base chardev %s not found",
3739 backend->mux->chardev);
3742 chr = qemu_chr_open_mux(base);
3744 case CHARDEV_BACKEND_KIND_MSMOUSE:
3745 chr = qemu_chr_open_msmouse();
3747 #ifdef CONFIG_BRLAPI
3748 case CHARDEV_BACKEND_KIND_BRAILLE:
3749 chr = chr_baum_init();
3752 case CHARDEV_BACKEND_KIND_STDIO:
3753 chr = qemu_chr_open_stdio(backend->stdio);
3756 case CHARDEV_BACKEND_KIND_CONSOLE:
3757 chr = qemu_chr_open_win_con();
3761 case CHARDEV_BACKEND_KIND_SPICEVMC:
3762 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3764 case CHARDEV_BACKEND_KIND_SPICEPORT:
3765 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3768 case CHARDEV_BACKEND_KIND_VC:
3769 chr = vc_init(backend->vc);
3771 case CHARDEV_BACKEND_KIND_RINGBUF:
3772 case CHARDEV_BACKEND_KIND_MEMORY:
3773 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
3776 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3780 if (chr == NULL && !error_is_set(errp)) {
3781 error_setg(errp, "Failed to create chardev");
3784 chr->label = g_strdup(id);
3785 chr->avail_connections =
3786 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3787 if (!chr->filename) {
3788 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
3790 if (!chr->explicit_be_open) {
3791 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3793 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3801 void qmp_chardev_remove(const char *id, Error **errp)
3803 CharDriverState *chr;
3805 chr = qemu_chr_find(id);
3807 error_setg(errp, "Chardev '%s' not found", id);
3810 if (chr->chr_can_read || chr->chr_read ||
3811 chr->chr_event || chr->handler_opaque) {
3812 error_setg(errp, "Chardev '%s' is busy", id);
3815 qemu_chr_delete(chr);
3818 static void register_types(void)
3820 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3821 register_char_driver("socket", qemu_chr_open_socket);
3822 register_char_driver("udp", qemu_chr_open_udp);
3823 register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
3824 qemu_chr_parse_ringbuf);
3825 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3826 qemu_chr_parse_file_out);
3827 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3828 qemu_chr_parse_stdio);
3829 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3830 qemu_chr_parse_serial);
3831 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3832 qemu_chr_parse_serial);
3833 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3834 qemu_chr_parse_parallel);
3835 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3836 qemu_chr_parse_parallel);
3837 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3838 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3839 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3840 qemu_chr_parse_pipe);
3841 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
3842 qemu_chr_parse_mux);
3843 /* Bug-compatibility: */
3844 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3845 qemu_chr_parse_ringbuf);
3846 /* this must be done after machine init, since we register FEs with muxes
3847 * as part of realize functions like serial_isa_realizefn when -nographic
3850 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
3853 type_init(register_types);