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 "char/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(__GLIBC__)
58 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
63 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
64 #include <dev/ppbus/ppi.h>
65 #include <dev/ppbus/ppbconf.h>
66 #elif defined(__DragonFly__)
67 #include <dev/misc/ppi/ppi.h>
68 #include <bus/ppbus/ppbconf.h>
74 #include <linux/ppdev.h>
75 #include <linux/parport.h>
79 #include <sys/ethernet.h>
80 #include <sys/sockio.h>
81 #include <netinet/arp.h>
82 #include <netinet/in.h>
83 #include <netinet/in_systm.h>
84 #include <netinet/ip.h>
85 #include <netinet/ip_icmp.h> // must come after ip.h
86 #include <netinet/udp.h>
87 #include <netinet/tcp.h>
95 #include "qemu/sockets.h"
96 #include "ui/qemu-spice.h"
98 #define READ_BUF_LEN 4096
100 /***********************************************************/
101 /* character device */
103 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
104 QTAILQ_HEAD_INITIALIZER(chardevs);
106 void qemu_chr_be_event(CharDriverState *s, int event)
108 /* Keep track if the char device is open */
110 case CHR_EVENT_OPENED:
113 case CHR_EVENT_CLOSED:
120 s->chr_event(s->handler_opaque, event);
123 static gboolean qemu_chr_be_generic_open_bh(gpointer opaque)
125 CharDriverState *s = opaque;
126 qemu_chr_be_event(s, CHR_EVENT_OPENED);
131 void qemu_chr_be_generic_open(CharDriverState *s)
133 if (s->idle_tag == 0) {
134 s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s);
138 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
140 return s->chr_write(s, buf, len);
143 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
148 while (offset < len) {
150 res = s->chr_write(s, buf + offset, len - offset);
151 if (res == -1 && errno == EAGAIN) {
154 } while (res == -1 && errno == EAGAIN);
170 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
174 return s->chr_ioctl(s, cmd, arg);
177 int qemu_chr_be_can_write(CharDriverState *s)
179 if (!s->chr_can_read)
181 return s->chr_can_read(s->handler_opaque);
184 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
187 s->chr_read(s->handler_opaque, buf, len);
191 int qemu_chr_fe_get_msgfd(CharDriverState *s)
193 return s->get_msgfd ? s->get_msgfd(s) : -1;
196 int qemu_chr_add_client(CharDriverState *s, int fd)
198 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
201 void qemu_chr_accept_input(CharDriverState *s)
203 if (s->chr_accept_input)
204 s->chr_accept_input(s);
208 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
210 char buf[READ_BUF_LEN];
213 vsnprintf(buf, sizeof(buf), fmt, ap);
214 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
218 void qemu_chr_add_handlers(CharDriverState *s,
219 IOCanReadHandler *fd_can_read,
220 IOReadHandler *fd_read,
221 IOEventHandler *fd_event,
226 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
231 s->chr_can_read = fd_can_read;
232 s->chr_read = fd_read;
233 s->chr_event = fd_event;
234 s->handler_opaque = opaque;
235 if (s->chr_update_read_handler)
236 s->chr_update_read_handler(s);
238 if (!s->explicit_fe_open) {
239 qemu_chr_fe_set_open(s, fe_open);
242 /* We're connecting to an already opened device, so let's make sure we
243 also get the open event */
244 if (fe_open && s->be_open) {
245 qemu_chr_be_generic_open(s);
249 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
254 static CharDriverState *qemu_chr_open_null(void)
256 CharDriverState *chr;
258 chr = g_malloc0(sizeof(CharDriverState));
259 chr->chr_write = null_chr_write;
263 /* MUX driver for serial I/O splitting */
265 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
266 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
268 IOCanReadHandler *chr_can_read[MAX_MUX];
269 IOReadHandler *chr_read[MAX_MUX];
270 IOEventHandler *chr_event[MAX_MUX];
271 void *ext_opaque[MAX_MUX];
272 CharDriverState *drv;
277 /* Intermediate input buffer allows to catch escape sequences even if the
278 currently active device is not accepting any input - but only until it
280 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
285 int64_t timestamps_start;
289 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
291 MuxDriver *d = chr->opaque;
293 if (!d->timestamps) {
294 ret = d->drv->chr_write(d->drv, buf, len);
299 for (i = 0; i < len; i++) {
305 ti = qemu_get_clock_ms(rt_clock);
306 if (d->timestamps_start == -1)
307 d->timestamps_start = ti;
308 ti -= d->timestamps_start;
310 snprintf(buf1, sizeof(buf1),
311 "[%02d:%02d:%02d.%03d] ",
316 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
319 ret += d->drv->chr_write(d->drv, buf+i, 1);
320 if (buf[i] == '\n') {
328 static const char * const mux_help[] = {
329 "% h print this help\n\r",
330 "% x exit emulator\n\r",
331 "% s save disk data back to file (if -snapshot)\n\r",
332 "% t toggle console timestamps\n\r"
333 "% b send break (magic sysrq)\n\r",
334 "% c switch between console and monitor\n\r",
339 int term_escape_char = 0x01; /* ctrl-a is used for escape */
340 static void mux_print_help(CharDriverState *chr)
343 char ebuf[15] = "Escape-Char";
344 char cbuf[50] = "\n\r";
346 if (term_escape_char > 0 && term_escape_char < 26) {
347 snprintf(cbuf, sizeof(cbuf), "\n\r");
348 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
350 snprintf(cbuf, sizeof(cbuf),
351 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
354 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
355 for (i = 0; mux_help[i] != NULL; i++) {
356 for (j=0; mux_help[i][j] != '\0'; j++) {
357 if (mux_help[i][j] == '%')
358 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
360 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
365 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
367 if (d->chr_event[mux_nr])
368 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
371 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
373 if (d->term_got_escape) {
374 d->term_got_escape = 0;
375 if (ch == term_escape_char)
384 const char *term = "QEMU: Terminated\n\r";
385 chr->chr_write(chr,(uint8_t *)term,strlen(term));
393 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
396 /* Switch to the next registered device */
397 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
399 if (d->focus >= d->mux_cnt)
401 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
404 d->timestamps = !d->timestamps;
405 d->timestamps_start = -1;
409 } else if (ch == term_escape_char) {
410 d->term_got_escape = 1;
418 static void mux_chr_accept_input(CharDriverState *chr)
420 MuxDriver *d = chr->opaque;
423 while (d->prod[m] != d->cons[m] &&
424 d->chr_can_read[m] &&
425 d->chr_can_read[m](d->ext_opaque[m])) {
426 d->chr_read[m](d->ext_opaque[m],
427 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
431 static int mux_chr_can_read(void *opaque)
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
437 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
439 if (d->chr_can_read[m])
440 return d->chr_can_read[m](d->ext_opaque[m]);
444 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
446 CharDriverState *chr = opaque;
447 MuxDriver *d = chr->opaque;
451 mux_chr_accept_input (opaque);
453 for(i = 0; i < size; i++)
454 if (mux_proc_byte(chr, d, buf[i])) {
455 if (d->prod[m] == d->cons[m] &&
456 d->chr_can_read[m] &&
457 d->chr_can_read[m](d->ext_opaque[m]))
458 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
460 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
464 static void mux_chr_event(void *opaque, int event)
466 CharDriverState *chr = opaque;
467 MuxDriver *d = chr->opaque;
470 /* Send the event to all registered listeners */
471 for (i = 0; i < d->mux_cnt; i++)
472 mux_chr_send_event(d, i, event);
475 static void mux_chr_update_read_handler(CharDriverState *chr)
477 MuxDriver *d = chr->opaque;
479 if (d->mux_cnt >= MAX_MUX) {
480 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
483 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
484 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
485 d->chr_read[d->mux_cnt] = chr->chr_read;
486 d->chr_event[d->mux_cnt] = chr->chr_event;
487 /* Fix up the real driver with mux routines */
488 if (d->mux_cnt == 0) {
489 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
492 if (d->focus != -1) {
493 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
495 d->focus = d->mux_cnt;
497 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
500 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
502 CharDriverState *chr;
505 chr = g_malloc0(sizeof(CharDriverState));
506 d = g_malloc0(sizeof(MuxDriver));
511 chr->chr_write = mux_chr_write;
512 chr->chr_update_read_handler = mux_chr_update_read_handler;
513 chr->chr_accept_input = mux_chr_accept_input;
514 /* Frontend guest-open / -close notification is not support with muxes */
515 chr->chr_set_fe_open = NULL;
517 /* Muxes are always open on creation */
518 qemu_chr_be_generic_open(chr);
525 int send_all(int fd, const void *buf, int len1)
531 ret = send(fd, buf, len, 0);
533 errno = WSAGetLastError();
534 if (errno != WSAEWOULDBLOCK) {
537 } else if (ret == 0) {
549 int send_all(int fd, const void *_buf, int len1)
552 const uint8_t *buf = _buf;
556 ret = write(fd, buf, len);
558 if (errno != EINTR && errno != EAGAIN)
560 } else if (ret == 0) {
570 int recv_all(int fd, void *_buf, int len1, bool single_read)
576 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
578 if (errno != EINTR && errno != EAGAIN) {
595 typedef struct IOWatchPoll
600 IOCanReadHandler *fd_can_read;
603 QTAILQ_ENTRY(IOWatchPoll) node;
606 static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
607 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
609 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
613 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
614 if (i->src == source) {
622 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
624 IOWatchPoll *iwp = io_watch_poll_from_source(source);
626 iwp->max_size = iwp->fd_can_read(iwp->opaque);
627 if (iwp->max_size == 0) {
631 return g_io_watch_funcs.prepare(source, timeout_);
634 static gboolean io_watch_poll_check(GSource *source)
636 IOWatchPoll *iwp = io_watch_poll_from_source(source);
638 if (iwp->max_size == 0) {
642 return g_io_watch_funcs.check(source);
645 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
648 return g_io_watch_funcs.dispatch(source, callback, user_data);
651 static void io_watch_poll_finalize(GSource *source)
653 IOWatchPoll *iwp = io_watch_poll_from_source(source);
654 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
655 g_io_watch_funcs.finalize(source);
658 static GSourceFuncs io_watch_poll_funcs = {
659 .prepare = io_watch_poll_prepare,
660 .check = io_watch_poll_check,
661 .dispatch = io_watch_poll_dispatch,
662 .finalize = io_watch_poll_finalize,
665 /* Can only be used for read */
666 static guint io_add_watch_poll(GIOChannel *channel,
667 IOCanReadHandler *fd_can_read,
675 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
676 g_source_set_funcs(src, &io_watch_poll_funcs);
677 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
678 tag = g_source_attach(src, NULL);
681 iwp = g_malloc0(sizeof(*iwp));
684 iwp->fd_can_read = fd_can_read;
685 iwp->opaque = user_data;
687 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
693 static GIOChannel *io_channel_from_fd(int fd)
701 chan = g_io_channel_unix_new(fd);
703 g_io_channel_set_encoding(chan, NULL, NULL);
704 g_io_channel_set_buffered(chan, FALSE);
710 static GIOChannel *io_channel_from_socket(int fd)
719 chan = g_io_channel_win32_new_socket(fd);
721 chan = g_io_channel_unix_new(fd);
724 g_io_channel_set_encoding(chan, NULL, NULL);
725 g_io_channel_set_buffered(chan, FALSE);
730 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
736 while (offset < len) {
739 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
740 &bytes_written, NULL);
741 if (status != G_IO_STATUS_NORMAL) {
742 if (status == G_IO_STATUS_AGAIN) {
743 /* If we've written any data, return a partial write. */
753 } else if (status == G_IO_STATUS_EOF) {
757 offset += bytes_written;
765 typedef struct FDCharDriver {
766 CharDriverState *chr;
767 GIOChannel *fd_in, *fd_out;
770 QTAILQ_ENTRY(FDCharDriver) node;
773 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
775 FDCharDriver *s = chr->opaque;
777 return io_channel_send(s->fd_out, buf, len);
780 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
782 CharDriverState *chr = opaque;
783 FDCharDriver *s = chr->opaque;
785 uint8_t buf[READ_BUF_LEN];
790 if (len > s->max_size) {
797 status = g_io_channel_read_chars(chan, (gchar *)buf,
798 len, &bytes_read, NULL);
799 if (status == G_IO_STATUS_EOF) {
800 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
803 if (status == G_IO_STATUS_NORMAL) {
804 qemu_chr_be_write(chr, buf, bytes_read);
810 static int fd_chr_read_poll(void *opaque)
812 CharDriverState *chr = opaque;
813 FDCharDriver *s = chr->opaque;
815 s->max_size = qemu_chr_be_can_write(chr);
819 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
821 FDCharDriver *s = chr->opaque;
822 return g_io_create_watch(s->fd_out, cond);
825 static void fd_chr_update_read_handler(CharDriverState *chr)
827 FDCharDriver *s = chr->opaque;
830 g_source_remove(s->fd_in_tag);
834 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
838 static void fd_chr_close(struct CharDriverState *chr)
840 FDCharDriver *s = chr->opaque;
843 g_source_remove(s->fd_in_tag);
848 g_io_channel_unref(s->fd_in);
851 g_io_channel_unref(s->fd_out);
855 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
858 /* open a character device to a unix fd */
859 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
861 CharDriverState *chr;
864 chr = g_malloc0(sizeof(CharDriverState));
865 s = g_malloc0(sizeof(FDCharDriver));
866 s->fd_in = io_channel_from_fd(fd_in);
867 s->fd_out = io_channel_from_fd(fd_out);
868 fcntl(fd_out, F_SETFL, O_NONBLOCK);
871 chr->chr_add_watch = fd_chr_add_watch;
872 chr->chr_write = fd_chr_write;
873 chr->chr_update_read_handler = fd_chr_update_read_handler;
874 chr->chr_close = fd_chr_close;
876 qemu_chr_be_generic_open(chr);
881 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
884 char filename_in[256], filename_out[256];
885 const char *filename = opts->device;
887 if (filename == NULL) {
888 fprintf(stderr, "chardev: pipe: no filename given\n");
892 snprintf(filename_in, 256, "%s.in", filename);
893 snprintf(filename_out, 256, "%s.out", filename);
894 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
895 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
896 if (fd_in < 0 || fd_out < 0) {
901 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
906 return qemu_chr_open_fd(fd_in, fd_out);
909 /* init terminal so that we can grab keys */
910 static struct termios oldtty;
911 static int old_fd0_flags;
912 static bool stdio_allow_signal;
914 static void term_exit(void)
916 tcsetattr (0, TCSANOW, &oldtty);
917 fcntl(0, F_SETFL, old_fd0_flags);
920 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
926 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
927 |INLCR|IGNCR|ICRNL|IXON);
928 tty.c_oflag |= OPOST;
929 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
930 tty.c_cflag &= ~(CSIZE|PARENB);
935 /* if graphical mode, we allow Ctrl-C handling */
936 if (!stdio_allow_signal)
937 tty.c_lflag &= ~ISIG;
939 tcsetattr (0, TCSANOW, &tty);
942 static void qemu_chr_close_stdio(struct CharDriverState *chr)
948 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
950 CharDriverState *chr;
952 if (is_daemonized()) {
953 error_report("cannot use stdio with -daemonize");
956 old_fd0_flags = fcntl(0, F_GETFL);
957 tcgetattr (0, &oldtty);
958 fcntl(0, F_SETFL, O_NONBLOCK);
961 chr = qemu_chr_open_fd(0, 1);
962 chr->chr_close = qemu_chr_close_stdio;
963 chr->chr_set_echo = qemu_chr_set_echo_stdio;
964 stdio_allow_signal = display_type != DT_NOGRAPHIC;
965 if (opts->has_signal) {
966 stdio_allow_signal = opts->signal;
968 qemu_chr_fe_set_echo(chr, false);
974 /* Once Solaris has openpty(), this is going to be removed. */
975 static int openpty(int *amaster, int *aslave, char *name,
976 struct termios *termp, struct winsize *winp)
979 int mfd = -1, sfd = -1;
981 *amaster = *aslave = -1;
983 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
987 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
990 if ((slave = ptsname(mfd)) == NULL)
993 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
996 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
997 (termp != NULL && tcgetattr(sfd, termp) < 0))
1005 ioctl(sfd, TIOCSWINSZ, winp);
1016 static void cfmakeraw (struct termios *termios_p)
1018 termios_p->c_iflag &=
1019 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1020 termios_p->c_oflag &= ~OPOST;
1021 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1022 termios_p->c_cflag &= ~(CSIZE|PARENB);
1023 termios_p->c_cflag |= CS8;
1025 termios_p->c_cc[VMIN] = 0;
1026 termios_p->c_cc[VTIME] = 0;
1030 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1031 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1032 || defined(__GLIBC__)
1034 #define HAVE_CHARDEV_TTY 1
1045 static void pty_chr_update_read_handler(CharDriverState *chr);
1046 static void pty_chr_state(CharDriverState *chr, int connected);
1048 static gboolean pty_chr_timer(gpointer opaque)
1050 struct CharDriverState *chr = opaque;
1051 PtyCharDriver *s = chr->opaque;
1057 /* If we arrive here without polling being cleared due
1058 * read returning -EIO, then we are (re-)connected */
1059 pty_chr_state(chr, 1);
1064 pty_chr_update_read_handler(chr);
1070 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1072 PtyCharDriver *s = chr->opaque;
1075 g_source_remove(s->timer_tag);
1080 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1082 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1086 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1088 PtyCharDriver *s = chr->opaque;
1090 if (!s->connected) {
1091 /* guest sends data, check for (re-)connect */
1092 pty_chr_update_read_handler(chr);
1095 return io_channel_send(s->fd, buf, len);
1098 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1100 PtyCharDriver *s = chr->opaque;
1101 return g_io_create_watch(s->fd, cond);
1104 static int pty_chr_read_poll(void *opaque)
1106 CharDriverState *chr = opaque;
1107 PtyCharDriver *s = chr->opaque;
1109 s->read_bytes = qemu_chr_be_can_write(chr);
1110 return s->read_bytes;
1113 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1115 CharDriverState *chr = opaque;
1116 PtyCharDriver *s = chr->opaque;
1118 uint8_t buf[READ_BUF_LEN];
1122 if (len > s->read_bytes)
1123 len = s->read_bytes;
1126 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1127 if (status != G_IO_STATUS_NORMAL) {
1128 pty_chr_state(chr, 0);
1131 pty_chr_state(chr, 1);
1132 qemu_chr_be_write(chr, buf, size);
1137 static void pty_chr_update_read_handler(CharDriverState *chr)
1139 PtyCharDriver *s = chr->opaque;
1142 g_source_remove(s->fd_tag);
1145 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1148 * Short timeout here: just need wait long enougth that qemu makes
1149 * it through the poll loop once. When reconnected we want a
1150 * short timeout so we notice it almost instantly. Otherwise
1151 * read() gives us -EIO instantly, making pty_chr_state() reset the
1152 * timeout to the normal (much longer) poll interval before the
1155 pty_chr_rearm_timer(chr, 10);
1158 static void pty_chr_state(CharDriverState *chr, int connected)
1160 PtyCharDriver *s = chr->opaque;
1163 g_source_remove(s->fd_tag);
1167 /* (re-)connect poll interval for idle guests: once per second.
1168 * We check more frequently in case the guests sends data to
1169 * the virtual device linked to our pty. */
1170 pty_chr_rearm_timer(chr, 1000);
1173 qemu_chr_be_generic_open(chr);
1179 static void pty_chr_close(struct CharDriverState *chr)
1181 PtyCharDriver *s = chr->opaque;
1185 g_source_remove(s->fd_tag);
1187 fd = g_io_channel_unix_get_fd(s->fd);
1188 g_io_channel_unref(s->fd);
1191 g_source_remove(s->timer_tag);
1194 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1197 static CharDriverState *qemu_chr_open_pty(const char *id,
1200 CharDriverState *chr;
1203 int master_fd, slave_fd;
1204 #if defined(__OpenBSD__) || defined(__DragonFly__)
1205 char pty_name[PATH_MAX];
1206 #define q_ptsname(x) pty_name
1208 char *pty_name = NULL;
1209 #define q_ptsname(x) ptsname(x)
1212 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1216 /* Set raw attributes on the pty. */
1217 tcgetattr(slave_fd, &tty);
1219 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1222 chr = g_malloc0(sizeof(CharDriverState));
1224 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1225 ret->pty = g_strdup(q_ptsname(master_fd));
1226 ret->has_pty = true;
1228 fprintf(stderr, "char device redirected to %s (label %s)\n",
1229 q_ptsname(master_fd), id);
1231 s = g_malloc0(sizeof(PtyCharDriver));
1233 chr->chr_write = pty_chr_write;
1234 chr->chr_update_read_handler = pty_chr_update_read_handler;
1235 chr->chr_close = pty_chr_close;
1236 chr->chr_add_watch = pty_chr_add_watch;
1238 s->fd = io_channel_from_fd(master_fd);
1244 static void tty_serial_init(int fd, int speed,
1245 int parity, int data_bits, int stop_bits)
1251 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1252 speed, parity, data_bits, stop_bits);
1254 tcgetattr (fd, &tty);
1256 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1257 speed = speed * 10 / 11;
1274 /* Non-Posix values follow. They may be unsupported on some systems. */
1276 check_speed(115200);
1278 check_speed(230400);
1281 check_speed(460800);
1284 check_speed(500000);
1287 check_speed(576000);
1290 check_speed(921600);
1293 check_speed(1000000);
1296 check_speed(1152000);
1299 check_speed(1500000);
1302 check_speed(2000000);
1305 check_speed(2500000);
1308 check_speed(3000000);
1311 check_speed(3500000);
1314 check_speed(4000000);
1319 cfsetispeed(&tty, spd);
1320 cfsetospeed(&tty, spd);
1322 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1323 |INLCR|IGNCR|ICRNL|IXON);
1324 tty.c_oflag |= OPOST;
1325 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1326 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1347 tty.c_cflag |= PARENB;
1350 tty.c_cflag |= PARENB | PARODD;
1354 tty.c_cflag |= CSTOPB;
1356 tcsetattr (fd, TCSANOW, &tty);
1359 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1361 FDCharDriver *s = chr->opaque;
1364 case CHR_IOCTL_SERIAL_SET_PARAMS:
1366 QEMUSerialSetParams *ssp = arg;
1367 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1368 ssp->speed, ssp->parity,
1369 ssp->data_bits, ssp->stop_bits);
1372 case CHR_IOCTL_SERIAL_SET_BREAK:
1374 int enable = *(int *)arg;
1376 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1380 case CHR_IOCTL_SERIAL_GET_TIOCM:
1383 int *targ = (int *)arg;
1384 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1386 if (sarg & TIOCM_CTS)
1387 *targ |= CHR_TIOCM_CTS;
1388 if (sarg & TIOCM_CAR)
1389 *targ |= CHR_TIOCM_CAR;
1390 if (sarg & TIOCM_DSR)
1391 *targ |= CHR_TIOCM_DSR;
1392 if (sarg & TIOCM_RI)
1393 *targ |= CHR_TIOCM_RI;
1394 if (sarg & TIOCM_DTR)
1395 *targ |= CHR_TIOCM_DTR;
1396 if (sarg & TIOCM_RTS)
1397 *targ |= CHR_TIOCM_RTS;
1400 case CHR_IOCTL_SERIAL_SET_TIOCM:
1402 int sarg = *(int *)arg;
1404 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1405 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1406 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1407 if (sarg & CHR_TIOCM_CTS)
1409 if (sarg & CHR_TIOCM_CAR)
1411 if (sarg & CHR_TIOCM_DSR)
1413 if (sarg & CHR_TIOCM_RI)
1415 if (sarg & CHR_TIOCM_DTR)
1417 if (sarg & CHR_TIOCM_RTS)
1419 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1428 static void qemu_chr_close_tty(CharDriverState *chr)
1430 FDCharDriver *s = chr->opaque;
1434 fd = g_io_channel_unix_get_fd(s->fd_in);
1444 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1446 CharDriverState *chr;
1448 tty_serial_init(fd, 115200, 'N', 8, 1);
1449 chr = qemu_chr_open_fd(fd, fd);
1450 chr->chr_ioctl = tty_serial_ioctl;
1451 chr->chr_close = qemu_chr_close_tty;
1454 #endif /* __linux__ || __sun__ */
1456 #if defined(__linux__)
1458 #define HAVE_CHARDEV_PARPORT 1
1463 } ParallelCharDriver;
1465 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1467 if (s->mode != mode) {
1469 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1476 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1478 ParallelCharDriver *drv = chr->opaque;
1483 case CHR_IOCTL_PP_READ_DATA:
1484 if (ioctl(fd, PPRDATA, &b) < 0)
1486 *(uint8_t *)arg = b;
1488 case CHR_IOCTL_PP_WRITE_DATA:
1489 b = *(uint8_t *)arg;
1490 if (ioctl(fd, PPWDATA, &b) < 0)
1493 case CHR_IOCTL_PP_READ_CONTROL:
1494 if (ioctl(fd, PPRCONTROL, &b) < 0)
1496 /* Linux gives only the lowest bits, and no way to know data
1497 direction! For better compatibility set the fixed upper
1499 *(uint8_t *)arg = b | 0xc0;
1501 case CHR_IOCTL_PP_WRITE_CONTROL:
1502 b = *(uint8_t *)arg;
1503 if (ioctl(fd, PPWCONTROL, &b) < 0)
1506 case CHR_IOCTL_PP_READ_STATUS:
1507 if (ioctl(fd, PPRSTATUS, &b) < 0)
1509 *(uint8_t *)arg = b;
1511 case CHR_IOCTL_PP_DATA_DIR:
1512 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1515 case CHR_IOCTL_PP_EPP_READ_ADDR:
1516 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1517 struct ParallelIOArg *parg = arg;
1518 int n = read(fd, parg->buffer, parg->count);
1519 if (n != parg->count) {
1524 case CHR_IOCTL_PP_EPP_READ:
1525 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1526 struct ParallelIOArg *parg = arg;
1527 int n = read(fd, parg->buffer, parg->count);
1528 if (n != parg->count) {
1533 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1534 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1535 struct ParallelIOArg *parg = arg;
1536 int n = write(fd, parg->buffer, parg->count);
1537 if (n != parg->count) {
1542 case CHR_IOCTL_PP_EPP_WRITE:
1543 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1544 struct ParallelIOArg *parg = arg;
1545 int n = write(fd, parg->buffer, parg->count);
1546 if (n != parg->count) {
1557 static void pp_close(CharDriverState *chr)
1559 ParallelCharDriver *drv = chr->opaque;
1562 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1563 ioctl(fd, PPRELEASE);
1566 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1569 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1571 CharDriverState *chr;
1572 ParallelCharDriver *drv;
1574 if (ioctl(fd, PPCLAIM) < 0) {
1579 drv = g_malloc0(sizeof(ParallelCharDriver));
1581 drv->mode = IEEE1284_MODE_COMPAT;
1583 chr = g_malloc0(sizeof(CharDriverState));
1584 chr->chr_write = null_chr_write;
1585 chr->chr_ioctl = pp_ioctl;
1586 chr->chr_close = pp_close;
1589 qemu_chr_be_generic_open(chr);
1593 #endif /* __linux__ */
1595 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1597 #define HAVE_CHARDEV_PARPORT 1
1599 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1601 int fd = (int)(intptr_t)chr->opaque;
1605 case CHR_IOCTL_PP_READ_DATA:
1606 if (ioctl(fd, PPIGDATA, &b) < 0)
1608 *(uint8_t *)arg = b;
1610 case CHR_IOCTL_PP_WRITE_DATA:
1611 b = *(uint8_t *)arg;
1612 if (ioctl(fd, PPISDATA, &b) < 0)
1615 case CHR_IOCTL_PP_READ_CONTROL:
1616 if (ioctl(fd, PPIGCTRL, &b) < 0)
1618 *(uint8_t *)arg = b;
1620 case CHR_IOCTL_PP_WRITE_CONTROL:
1621 b = *(uint8_t *)arg;
1622 if (ioctl(fd, PPISCTRL, &b) < 0)
1625 case CHR_IOCTL_PP_READ_STATUS:
1626 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1628 *(uint8_t *)arg = b;
1636 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1638 CharDriverState *chr;
1640 chr = g_malloc0(sizeof(CharDriverState));
1641 chr->opaque = (void *)(intptr_t)fd;
1642 chr->chr_write = null_chr_write;
1643 chr->chr_ioctl = pp_ioctl;
1652 HANDLE hcom, hrecv, hsend;
1653 OVERLAPPED orecv, osend;
1660 HANDLE hInputReadyEvent;
1661 HANDLE hInputDoneEvent;
1662 HANDLE hInputThread;
1663 uint8_t win_stdio_buf;
1664 } WinStdioCharState;
1666 #define NSENDBUF 2048
1667 #define NRECVBUF 2048
1668 #define MAXCONNECT 1
1669 #define NTIMEOUT 5000
1671 static int win_chr_poll(void *opaque);
1672 static int win_chr_pipe_poll(void *opaque);
1674 static void win_chr_close(CharDriverState *chr)
1676 WinCharState *s = chr->opaque;
1679 CloseHandle(s->hsend);
1683 CloseHandle(s->hrecv);
1687 CloseHandle(s->hcom);
1691 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1693 qemu_del_polling_cb(win_chr_poll, chr);
1695 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1698 static int win_chr_init(CharDriverState *chr, const char *filename)
1700 WinCharState *s = chr->opaque;
1702 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1707 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1709 fprintf(stderr, "Failed CreateEvent\n");
1712 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1714 fprintf(stderr, "Failed CreateEvent\n");
1718 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1719 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1720 if (s->hcom == INVALID_HANDLE_VALUE) {
1721 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1726 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1727 fprintf(stderr, "Failed SetupComm\n");
1731 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1732 size = sizeof(COMMCONFIG);
1733 GetDefaultCommConfig(filename, &comcfg, &size);
1734 comcfg.dcb.DCBlength = sizeof(DCB);
1735 CommConfigDialog(filename, NULL, &comcfg);
1737 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1738 fprintf(stderr, "Failed SetCommState\n");
1742 if (!SetCommMask(s->hcom, EV_ERR)) {
1743 fprintf(stderr, "Failed SetCommMask\n");
1747 cto.ReadIntervalTimeout = MAXDWORD;
1748 if (!SetCommTimeouts(s->hcom, &cto)) {
1749 fprintf(stderr, "Failed SetCommTimeouts\n");
1753 if (!ClearCommError(s->hcom, &err, &comstat)) {
1754 fprintf(stderr, "Failed ClearCommError\n");
1757 qemu_add_polling_cb(win_chr_poll, chr);
1765 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1767 WinCharState *s = chr->opaque;
1768 DWORD len, ret, size, err;
1771 ZeroMemory(&s->osend, sizeof(s->osend));
1772 s->osend.hEvent = s->hsend;
1775 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1777 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1779 err = GetLastError();
1780 if (err == ERROR_IO_PENDING) {
1781 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1799 static int win_chr_read_poll(CharDriverState *chr)
1801 WinCharState *s = chr->opaque;
1803 s->max_size = qemu_chr_be_can_write(chr);
1807 static void win_chr_readfile(CharDriverState *chr)
1809 WinCharState *s = chr->opaque;
1811 uint8_t buf[READ_BUF_LEN];
1814 ZeroMemory(&s->orecv, sizeof(s->orecv));
1815 s->orecv.hEvent = s->hrecv;
1816 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1818 err = GetLastError();
1819 if (err == ERROR_IO_PENDING) {
1820 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1825 qemu_chr_be_write(chr, buf, size);
1829 static void win_chr_read(CharDriverState *chr)
1831 WinCharState *s = chr->opaque;
1833 if (s->len > s->max_size)
1834 s->len = s->max_size;
1838 win_chr_readfile(chr);
1841 static int win_chr_poll(void *opaque)
1843 CharDriverState *chr = opaque;
1844 WinCharState *s = chr->opaque;
1848 ClearCommError(s->hcom, &comerr, &status);
1849 if (status.cbInQue > 0) {
1850 s->len = status.cbInQue;
1851 win_chr_read_poll(chr);
1858 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1860 CharDriverState *chr;
1863 chr = g_malloc0(sizeof(CharDriverState));
1864 s = g_malloc0(sizeof(WinCharState));
1866 chr->chr_write = win_chr_write;
1867 chr->chr_close = win_chr_close;
1869 if (win_chr_init(chr, filename) < 0) {
1874 qemu_chr_be_generic_open(chr);
1878 static int win_chr_pipe_poll(void *opaque)
1880 CharDriverState *chr = opaque;
1881 WinCharState *s = chr->opaque;
1884 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1887 win_chr_read_poll(chr);
1894 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1896 WinCharState *s = chr->opaque;
1904 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1906 fprintf(stderr, "Failed CreateEvent\n");
1909 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1911 fprintf(stderr, "Failed CreateEvent\n");
1915 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1916 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1917 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1919 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1920 if (s->hcom == INVALID_HANDLE_VALUE) {
1921 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1926 ZeroMemory(&ov, sizeof(ov));
1927 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1928 ret = ConnectNamedPipe(s->hcom, &ov);
1930 fprintf(stderr, "Failed ConnectNamedPipe\n");
1934 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1936 fprintf(stderr, "Failed GetOverlappedResult\n");
1938 CloseHandle(ov.hEvent);
1945 CloseHandle(ov.hEvent);
1948 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1957 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1959 const char *filename = opts->device;
1960 CharDriverState *chr;
1963 chr = g_malloc0(sizeof(CharDriverState));
1964 s = g_malloc0(sizeof(WinCharState));
1966 chr->chr_write = win_chr_write;
1967 chr->chr_close = win_chr_close;
1969 if (win_chr_pipe_init(chr, filename) < 0) {
1974 qemu_chr_be_generic_open(chr);
1978 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1980 CharDriverState *chr;
1983 chr = g_malloc0(sizeof(CharDriverState));
1984 s = g_malloc0(sizeof(WinCharState));
1987 chr->chr_write = win_chr_write;
1988 qemu_chr_be_generic_open(chr);
1992 static CharDriverState *qemu_chr_open_win_con(void)
1994 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1997 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1999 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2006 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2016 static void win_stdio_wait_func(void *opaque)
2018 CharDriverState *chr = opaque;
2019 WinStdioCharState *stdio = chr->opaque;
2020 INPUT_RECORD buf[4];
2025 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2029 /* Avoid error storm */
2030 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2034 for (i = 0; i < dwSize; i++) {
2035 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2037 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2039 if (kev->uChar.AsciiChar != 0) {
2040 for (j = 0; j < kev->wRepeatCount; j++) {
2041 if (qemu_chr_be_can_write(chr)) {
2042 uint8_t c = kev->uChar.AsciiChar;
2043 qemu_chr_be_write(chr, &c, 1);
2051 static DWORD WINAPI win_stdio_thread(LPVOID param)
2053 CharDriverState *chr = param;
2054 WinStdioCharState *stdio = chr->opaque;
2060 /* Wait for one byte */
2061 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2063 /* Exit in case of error, continue if nothing read */
2071 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2072 if (stdio->win_stdio_buf == '\r') {
2076 /* Signal the main thread and wait until the byte was eaten */
2077 if (!SetEvent(stdio->hInputReadyEvent)) {
2080 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2086 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2090 static void win_stdio_thread_wait_func(void *opaque)
2092 CharDriverState *chr = opaque;
2093 WinStdioCharState *stdio = chr->opaque;
2095 if (qemu_chr_be_can_write(chr)) {
2096 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2099 SetEvent(stdio->hInputDoneEvent);
2102 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2104 WinStdioCharState *stdio = chr->opaque;
2107 GetConsoleMode(stdio->hStdIn, &dwMode);
2110 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2112 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2116 static void win_stdio_close(CharDriverState *chr)
2118 WinStdioCharState *stdio = chr->opaque;
2120 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2121 CloseHandle(stdio->hInputReadyEvent);
2123 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2124 CloseHandle(stdio->hInputDoneEvent);
2126 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2127 TerminateThread(stdio->hInputThread, 0);
2130 g_free(chr->opaque);
2134 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2136 CharDriverState *chr;
2137 WinStdioCharState *stdio;
2141 chr = g_malloc0(sizeof(CharDriverState));
2142 stdio = g_malloc0(sizeof(WinStdioCharState));
2144 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2145 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2146 fprintf(stderr, "cannot open stdio: invalid handle\n");
2150 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2152 chr->opaque = stdio;
2153 chr->chr_write = win_stdio_write;
2154 chr->chr_close = win_stdio_close;
2157 if (qemu_add_wait_object(stdio->hStdIn,
2158 win_stdio_wait_func, chr)) {
2159 fprintf(stderr, "qemu_add_wait_object: failed\n");
2164 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2165 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2166 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2169 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2170 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2171 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2172 fprintf(stderr, "cannot create stdio thread or event\n");
2175 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2176 win_stdio_thread_wait_func, chr)) {
2177 fprintf(stderr, "qemu_add_wait_object: failed\n");
2181 dwMode |= ENABLE_LINE_INPUT;
2184 /* set the terminal in raw mode */
2185 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2186 dwMode |= ENABLE_PROCESSED_INPUT;
2189 SetConsoleMode(stdio->hStdIn, dwMode);
2191 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2192 qemu_chr_fe_set_echo(chr, false);
2196 #endif /* !_WIN32 */
2199 /***********************************************************/
2200 /* UDP Net console */
2206 uint8_t buf[READ_BUF_LEN];
2212 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2214 NetCharDriver *s = chr->opaque;
2215 gsize bytes_written;
2218 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2219 if (status == G_IO_STATUS_EOF) {
2221 } else if (status != G_IO_STATUS_NORMAL) {
2225 return bytes_written;
2228 static int udp_chr_read_poll(void *opaque)
2230 CharDriverState *chr = opaque;
2231 NetCharDriver *s = chr->opaque;
2233 s->max_size = qemu_chr_be_can_write(chr);
2235 /* If there were any stray characters in the queue process them
2238 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2239 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2241 s->max_size = qemu_chr_be_can_write(chr);
2246 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2248 CharDriverState *chr = opaque;
2249 NetCharDriver *s = chr->opaque;
2250 gsize bytes_read = 0;
2253 if (s->max_size == 0)
2255 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2257 s->bufcnt = bytes_read;
2258 s->bufptr = s->bufcnt;
2259 if (status != G_IO_STATUS_NORMAL) {
2264 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2265 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2267 s->max_size = qemu_chr_be_can_write(chr);
2273 static void udp_chr_update_read_handler(CharDriverState *chr)
2275 NetCharDriver *s = chr->opaque;
2278 g_source_remove(s->tag);
2283 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2287 static void udp_chr_close(CharDriverState *chr)
2289 NetCharDriver *s = chr->opaque;
2291 g_source_remove(s->tag);
2294 g_io_channel_unref(s->chan);
2298 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2301 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2303 CharDriverState *chr = NULL;
2304 NetCharDriver *s = NULL;
2306 chr = g_malloc0(sizeof(CharDriverState));
2307 s = g_malloc0(sizeof(NetCharDriver));
2310 s->chan = io_channel_from_socket(s->fd);
2314 chr->chr_write = udp_chr_write;
2315 chr->chr_update_read_handler = udp_chr_update_read_handler;
2316 chr->chr_close = udp_chr_close;
2320 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2322 Error *local_err = NULL;
2325 fd = inet_dgram_opts(opts, &local_err);
2329 return qemu_chr_open_udp_fd(fd);
2332 /***********************************************************/
2333 /* TCP Net console */
2337 GIOChannel *chan, *listen_chan;
2338 guint tag, listen_tag;
2348 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2350 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2352 TCPCharDriver *s = chr->opaque;
2354 return io_channel_send(s->chan, buf, len);
2356 /* XXX: indicate an error ? */
2361 static int tcp_chr_read_poll(void *opaque)
2363 CharDriverState *chr = opaque;
2364 TCPCharDriver *s = chr->opaque;
2367 s->max_size = qemu_chr_be_can_write(chr);
2372 #define IAC_BREAK 243
2373 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2375 uint8_t *buf, int *size)
2377 /* Handle any telnet client's basic IAC options to satisfy char by
2378 * char mode with no echo. All IAC options will be removed from
2379 * the buf and the do_telnetopt variable will be used to track the
2380 * state of the width of the IAC information.
2382 * IAC commands come in sets of 3 bytes with the exception of the
2383 * "IAC BREAK" command and the double IAC.
2389 for (i = 0; i < *size; i++) {
2390 if (s->do_telnetopt > 1) {
2391 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2392 /* Double IAC means send an IAC */
2396 s->do_telnetopt = 1;
2398 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2399 /* Handle IAC break commands by sending a serial break */
2400 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2405 if (s->do_telnetopt >= 4) {
2406 s->do_telnetopt = 1;
2409 if ((unsigned char)buf[i] == IAC) {
2410 s->do_telnetopt = 2;
2421 static int tcp_get_msgfd(CharDriverState *chr)
2423 TCPCharDriver *s = chr->opaque;
2430 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2432 TCPCharDriver *s = chr->opaque;
2433 struct cmsghdr *cmsg;
2435 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2438 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2439 cmsg->cmsg_level != SOL_SOCKET ||
2440 cmsg->cmsg_type != SCM_RIGHTS)
2443 fd = *((int *)CMSG_DATA(cmsg));
2447 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2450 #ifndef MSG_CMSG_CLOEXEC
2451 qemu_set_cloexec(fd);
2459 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2461 TCPCharDriver *s = chr->opaque;
2462 struct msghdr msg = { NULL, };
2463 struct iovec iov[1];
2465 struct cmsghdr cmsg;
2466 char control[CMSG_SPACE(sizeof(int))];
2471 iov[0].iov_base = buf;
2472 iov[0].iov_len = len;
2476 msg.msg_control = &msg_control;
2477 msg.msg_controllen = sizeof(msg_control);
2479 #ifdef MSG_CMSG_CLOEXEC
2480 flags |= MSG_CMSG_CLOEXEC;
2482 ret = recvmsg(s->fd, &msg, flags);
2483 if (ret > 0 && s->is_unix) {
2484 unix_process_msgfd(chr, &msg);
2490 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2492 TCPCharDriver *s = chr->opaque;
2493 return qemu_recv(s->fd, buf, len, 0);
2497 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2499 TCPCharDriver *s = chr->opaque;
2500 return g_io_create_watch(s->chan, cond);
2503 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2505 CharDriverState *chr = opaque;
2506 TCPCharDriver *s = chr->opaque;
2507 uint8_t buf[READ_BUF_LEN];
2510 if (!s->connected || s->max_size <= 0) {
2514 if (len > s->max_size)
2516 size = tcp_chr_recv(chr, (void *)buf, len);
2518 /* connection closed */
2520 if (s->listen_chan) {
2521 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2523 g_source_remove(s->tag);
2525 g_io_channel_unref(s->chan);
2529 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2530 } else if (size > 0) {
2531 if (s->do_telnetopt)
2532 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2534 qemu_chr_be_write(chr, buf, size);
2541 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2543 return qemu_chr_open_fd(eventfd, eventfd);
2547 static void tcp_chr_connect(void *opaque)
2549 CharDriverState *chr = opaque;
2550 TCPCharDriver *s = chr->opaque;
2554 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2556 qemu_chr_be_generic_open(chr);
2559 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2560 static void tcp_chr_telnet_init(int fd)
2563 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2564 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2565 send(fd, (char *)buf, 3, 0);
2566 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2567 send(fd, (char *)buf, 3, 0);
2568 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2569 send(fd, (char *)buf, 3, 0);
2570 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2571 send(fd, (char *)buf, 3, 0);
2574 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2576 TCPCharDriver *s = chr->opaque;
2580 qemu_set_nonblock(fd);
2582 socket_set_nodelay(fd);
2584 s->chan = io_channel_from_socket(fd);
2585 g_source_remove(s->listen_tag);
2587 tcp_chr_connect(chr);
2592 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2594 CharDriverState *chr = opaque;
2595 TCPCharDriver *s = chr->opaque;
2596 struct sockaddr_in saddr;
2598 struct sockaddr_un uaddr;
2600 struct sockaddr *addr;
2607 len = sizeof(uaddr);
2608 addr = (struct sockaddr *)&uaddr;
2612 len = sizeof(saddr);
2613 addr = (struct sockaddr *)&saddr;
2615 fd = qemu_accept(s->listen_fd, addr, &len);
2616 if (fd < 0 && errno != EINTR) {
2618 } else if (fd >= 0) {
2619 if (s->do_telnetopt)
2620 tcp_chr_telnet_init(fd);
2624 if (tcp_chr_add_client(chr, fd) < 0)
2630 static void tcp_chr_close(CharDriverState *chr)
2632 TCPCharDriver *s = chr->opaque;
2635 g_source_remove(s->tag);
2638 g_io_channel_unref(s->chan);
2642 if (s->listen_fd >= 0) {
2643 if (s->listen_tag) {
2644 g_source_remove(s->listen_tag);
2646 if (s->listen_chan) {
2647 g_io_channel_unref(s->listen_chan);
2649 closesocket(s->listen_fd);
2652 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2655 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2656 bool is_listen, bool is_telnet,
2657 bool is_waitconnect,
2660 CharDriverState *chr = NULL;
2661 TCPCharDriver *s = NULL;
2662 char host[NI_MAXHOST], serv[NI_MAXSERV];
2663 const char *left = "", *right = "";
2664 struct sockaddr_storage ss;
2665 socklen_t ss_len = sizeof(ss);
2667 memset(&ss, 0, ss_len);
2668 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2669 error_setg(errp, "getsockname: %s", strerror(errno));
2673 chr = g_malloc0(sizeof(CharDriverState));
2674 s = g_malloc0(sizeof(TCPCharDriver));
2681 chr->filename = g_malloc(256);
2682 switch (ss.ss_family) {
2686 snprintf(chr->filename, 256, "unix:%s%s",
2687 ((struct sockaddr_un *)(&ss))->sun_path,
2688 is_listen ? ",server" : "");
2696 s->do_nodelay = do_nodelay;
2697 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2698 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2699 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2700 is_telnet ? "telnet" : "tcp",
2701 left, host, right, serv,
2702 is_listen ? ",server" : "");
2707 chr->chr_write = tcp_chr_write;
2708 chr->chr_close = tcp_chr_close;
2709 chr->get_msgfd = tcp_get_msgfd;
2710 chr->chr_add_client = tcp_chr_add_client;
2711 chr->chr_add_watch = tcp_chr_add_watch;
2715 s->listen_chan = io_channel_from_socket(s->listen_fd);
2716 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2718 s->do_telnetopt = 1;
2723 socket_set_nodelay(fd);
2724 s->chan = io_channel_from_socket(s->fd);
2725 tcp_chr_connect(chr);
2728 if (is_listen && is_waitconnect) {
2729 printf("QEMU waiting for connection on: %s\n",
2731 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2732 qemu_set_nonblock(s->listen_fd);
2737 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2739 CharDriverState *chr = NULL;
2740 Error *local_err = NULL;
2748 is_listen = qemu_opt_get_bool(opts, "server", 0);
2749 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2750 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2751 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2752 is_unix = qemu_opt_get(opts, "path") != NULL;
2758 fd = unix_listen_opts(opts, &local_err);
2760 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2764 fd = inet_listen_opts(opts, 0, &local_err);
2766 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2773 if (!is_waitconnect)
2774 qemu_set_nonblock(fd);
2776 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2777 is_waitconnect, &local_err);
2778 if (error_is_set(&local_err)) {
2786 qerror_report_err(local_err);
2787 error_free(local_err);
2793 g_free(chr->opaque);
2799 /*********************************************************/
2800 /* Ring buffer chardev */
2807 } RingBufCharDriver;
2809 static size_t ringbuf_count(const CharDriverState *chr)
2811 const RingBufCharDriver *d = chr->opaque;
2813 return d->prod - d->cons;
2816 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2818 RingBufCharDriver *d = chr->opaque;
2821 if (!buf || (len < 0)) {
2825 for (i = 0; i < len; i++ ) {
2826 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2827 if (d->prod - d->cons > d->size) {
2828 d->cons = d->prod - d->size;
2835 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2837 RingBufCharDriver *d = chr->opaque;
2840 for (i = 0; i < len && d->cons != d->prod; i++) {
2841 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2847 static void ringbuf_chr_close(struct CharDriverState *chr)
2849 RingBufCharDriver *d = chr->opaque;
2856 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2859 CharDriverState *chr;
2860 RingBufCharDriver *d;
2862 chr = g_malloc0(sizeof(CharDriverState));
2863 d = g_malloc(sizeof(*d));
2865 d->size = opts->has_size ? opts->size : 65536;
2867 /* The size must be power of 2 */
2868 if (d->size & (d->size - 1)) {
2869 error_setg(errp, "size of ringbuf chardev must be power of two");
2875 d->cbuf = g_malloc0(d->size);
2878 chr->chr_write = ringbuf_chr_write;
2879 chr->chr_close = ringbuf_chr_close;
2889 static bool chr_is_ringbuf(const CharDriverState *chr)
2891 return chr->chr_write == ringbuf_chr_write;
2894 void qmp_ringbuf_write(const char *device, const char *data,
2895 bool has_format, enum DataFormat format,
2898 CharDriverState *chr;
2899 const uint8_t *write_data;
2903 chr = qemu_chr_find(device);
2905 error_setg(errp, "Device '%s' not found", device);
2909 if (!chr_is_ringbuf(chr)) {
2910 error_setg(errp,"%s is not a ringbuf device", device);
2914 if (has_format && (format == DATA_FORMAT_BASE64)) {
2915 write_data = g_base64_decode(data, &write_count);
2917 write_data = (uint8_t *)data;
2918 write_count = strlen(data);
2921 ret = ringbuf_chr_write(chr, write_data, write_count);
2923 if (write_data != (uint8_t *)data) {
2924 g_free((void *)write_data);
2928 error_setg(errp, "Failed to write to device %s", device);
2933 char *qmp_ringbuf_read(const char *device, int64_t size,
2934 bool has_format, enum DataFormat format,
2937 CharDriverState *chr;
2942 chr = qemu_chr_find(device);
2944 error_setg(errp, "Device '%s' not found", device);
2948 if (!chr_is_ringbuf(chr)) {
2949 error_setg(errp,"%s is not a ringbuf device", device);
2954 error_setg(errp, "size must be greater than zero");
2958 count = ringbuf_count(chr);
2959 size = size > count ? count : size;
2960 read_data = g_malloc(size + 1);
2962 ringbuf_chr_read(chr, read_data, size);
2964 if (has_format && (format == DATA_FORMAT_BASE64)) {
2965 data = g_base64_encode(read_data, size);
2969 * FIXME should read only complete, valid UTF-8 characters up
2970 * to @size bytes. Invalid sequences should be replaced by a
2971 * suitable replacement character. Except when (and only
2972 * when) ring buffer lost characters since last read, initial
2973 * continuation characters should be dropped.
2975 read_data[size] = 0;
2976 data = (char *)read_data;
2982 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2984 char host[65], port[33], width[8], height[8];
2988 Error *local_err = NULL;
2990 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2991 if (error_is_set(&local_err)) {
2992 qerror_report_err(local_err);
2993 error_free(local_err);
2997 if (strstart(filename, "mon:", &p)) {
2999 qemu_opt_set(opts, "mux", "on");
3002 if (strcmp(filename, "null") == 0 ||
3003 strcmp(filename, "pty") == 0 ||
3004 strcmp(filename, "msmouse") == 0 ||
3005 strcmp(filename, "braille") == 0 ||
3006 strcmp(filename, "stdio") == 0) {
3007 qemu_opt_set(opts, "backend", filename);
3010 if (strstart(filename, "vc", &p)) {
3011 qemu_opt_set(opts, "backend", "vc");
3013 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3015 qemu_opt_set(opts, "width", width);
3016 qemu_opt_set(opts, "height", height);
3017 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3019 qemu_opt_set(opts, "cols", width);
3020 qemu_opt_set(opts, "rows", height);
3027 if (strcmp(filename, "con:") == 0) {
3028 qemu_opt_set(opts, "backend", "console");
3031 if (strstart(filename, "COM", NULL)) {
3032 qemu_opt_set(opts, "backend", "serial");
3033 qemu_opt_set(opts, "path", filename);
3036 if (strstart(filename, "file:", &p)) {
3037 qemu_opt_set(opts, "backend", "file");
3038 qemu_opt_set(opts, "path", p);
3041 if (strstart(filename, "pipe:", &p)) {
3042 qemu_opt_set(opts, "backend", "pipe");
3043 qemu_opt_set(opts, "path", p);
3046 if (strstart(filename, "tcp:", &p) ||
3047 strstart(filename, "telnet:", &p)) {
3048 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3050 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3053 qemu_opt_set(opts, "backend", "socket");
3054 qemu_opt_set(opts, "host", host);
3055 qemu_opt_set(opts, "port", port);
3056 if (p[pos] == ',') {
3057 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3060 if (strstart(filename, "telnet:", &p))
3061 qemu_opt_set(opts, "telnet", "on");
3064 if (strstart(filename, "udp:", &p)) {
3065 qemu_opt_set(opts, "backend", "udp");
3066 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3068 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3072 qemu_opt_set(opts, "host", host);
3073 qemu_opt_set(opts, "port", port);
3074 if (p[pos] == '@') {
3076 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3078 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3082 qemu_opt_set(opts, "localaddr", host);
3083 qemu_opt_set(opts, "localport", port);
3087 if (strstart(filename, "unix:", &p)) {
3088 qemu_opt_set(opts, "backend", "socket");
3089 if (qemu_opts_do_parse(opts, p, "path") != 0)
3093 if (strstart(filename, "/dev/parport", NULL) ||
3094 strstart(filename, "/dev/ppi", NULL)) {
3095 qemu_opt_set(opts, "backend", "parport");
3096 qemu_opt_set(opts, "path", filename);
3099 if (strstart(filename, "/dev/", NULL)) {
3100 qemu_opt_set(opts, "backend", "tty");
3101 qemu_opt_set(opts, "path", filename);
3106 qemu_opts_del(opts);
3110 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3113 const char *path = qemu_opt_get(opts, "path");
3116 error_setg(errp, "chardev: file: no filename given");
3119 backend->file = g_new0(ChardevFile, 1);
3120 backend->file->out = g_strdup(path);
3123 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3126 backend->stdio = g_new0(ChardevStdio, 1);
3127 backend->stdio->has_signal = true;
3128 backend->stdio->signal =
3129 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3132 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3135 const char *device = qemu_opt_get(opts, "path");
3137 if (device == NULL) {
3138 error_setg(errp, "chardev: serial/tty: no device path given");
3141 backend->serial = g_new0(ChardevHostdev, 1);
3142 backend->serial->device = g_strdup(device);
3145 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3148 const char *device = qemu_opt_get(opts, "path");
3150 if (device == NULL) {
3151 error_setg(errp, "chardev: parallel: no device path given");
3154 backend->parallel = g_new0(ChardevHostdev, 1);
3155 backend->parallel->device = g_strdup(device);
3158 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3161 const char *device = qemu_opt_get(opts, "path");
3163 if (device == NULL) {
3164 error_setg(errp, "chardev: pipe: no device path given");
3167 backend->pipe = g_new0(ChardevHostdev, 1);
3168 backend->pipe->device = g_strdup(device);
3171 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3176 backend->memory = g_new0(ChardevRingbuf, 1);
3178 val = qemu_opt_get_number(opts, "size", 0);
3180 backend->memory->has_size = true;
3181 backend->memory->size = val;
3185 typedef struct CharDriver {
3188 CharDriverState *(*open)(QemuOpts *opts);
3189 /* new, qapi-based */
3191 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3194 static GSList *backends;
3196 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3200 s = g_malloc0(sizeof(*s));
3201 s->name = g_strdup(name);
3204 backends = g_slist_append(backends, s);
3207 void register_char_driver_qapi(const char *name, int kind,
3208 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3212 s = g_malloc0(sizeof(*s));
3213 s->name = g_strdup(name);
3217 backends = g_slist_append(backends, s);
3220 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3221 void (*init)(struct CharDriverState *s),
3225 CharDriverState *chr;
3228 if (qemu_opts_id(opts) == NULL) {
3229 error_setg(errp, "chardev: no id specified");
3233 if (qemu_opt_get(opts, "backend") == NULL) {
3234 error_setg(errp, "chardev: \"%s\" missing backend",
3235 qemu_opts_id(opts));
3238 for (i = backends; i; i = i->next) {
3241 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3246 error_setg(errp, "chardev: backend \"%s\" not found",
3247 qemu_opt_get(opts, "backend"));
3252 /* using new, qapi init */
3253 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3254 ChardevReturn *ret = NULL;
3255 const char *id = qemu_opts_id(opts);
3256 const char *bid = NULL;
3258 if (qemu_opt_get_bool(opts, "mux", 0)) {
3259 bid = g_strdup_printf("%s-base", id);
3263 backend->kind = cd->kind;
3265 cd->parse(opts, backend, errp);
3266 if (error_is_set(errp)) {
3270 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3271 if (error_is_set(errp)) {
3276 qapi_free_ChardevBackend(backend);
3277 qapi_free_ChardevReturn(ret);
3278 backend = g_new0(ChardevBackend, 1);
3279 backend->mux = g_new0(ChardevMux, 1);
3280 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3281 backend->mux->chardev = g_strdup(bid);
3282 ret = qmp_chardev_add(id, backend, errp);
3283 if (error_is_set(errp)) {
3288 chr = qemu_chr_find(id);
3291 qapi_free_ChardevBackend(backend);
3292 qapi_free_ChardevReturn(ret);
3296 chr = cd->open(opts);
3298 error_setg(errp, "chardev: opening backend \"%s\" failed",
3299 qemu_opt_get(opts, "backend"));
3304 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3306 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3308 if (qemu_opt_get_bool(opts, "mux", 0)) {
3309 CharDriverState *base = chr;
3310 int len = strlen(qemu_opts_id(opts)) + 6;
3311 base->label = g_malloc(len);
3312 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3313 chr = qemu_chr_open_mux(base);
3314 chr->filename = base->filename;
3315 chr->avail_connections = MAX_MUX;
3316 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3318 chr->avail_connections = 1;
3320 chr->label = g_strdup(qemu_opts_id(opts));
3325 qemu_opts_del(opts);
3329 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3332 CharDriverState *chr;
3336 if (strstart(filename, "chardev:", &p)) {
3337 return qemu_chr_find(p);
3340 opts = qemu_chr_parse_compat(label, filename);
3344 chr = qemu_chr_new_from_opts(opts, init, &err);
3345 if (error_is_set(&err)) {
3346 fprintf(stderr, "%s\n", error_get_pretty(err));
3349 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3350 qemu_chr_fe_claim_no_fail(chr);
3351 monitor_init(chr, MONITOR_USE_READLINE);
3356 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3358 if (chr->chr_set_echo) {
3359 chr->chr_set_echo(chr, echo);
3363 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3365 if (chr->fe_open == fe_open) {
3368 chr->fe_open = fe_open;
3369 if (chr->chr_set_fe_open) {
3370 chr->chr_set_fe_open(chr, fe_open);
3374 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3375 GIOFunc func, void *user_data)
3380 if (s->chr_add_watch == NULL) {
3384 src = s->chr_add_watch(s, cond);
3385 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3386 tag = g_source_attach(src, NULL);
3387 g_source_unref(src);
3392 int qemu_chr_fe_claim(CharDriverState *s)
3394 if (s->avail_connections < 1) {
3397 s->avail_connections--;
3401 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3403 if (qemu_chr_fe_claim(s) != 0) {
3404 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3405 __func__, s->label);
3410 void qemu_chr_fe_release(CharDriverState *s)
3412 s->avail_connections++;
3415 void qemu_chr_delete(CharDriverState *chr)
3417 QTAILQ_REMOVE(&chardevs, chr, next);
3418 if (chr->chr_close) {
3419 chr->chr_close(chr);
3421 g_free(chr->filename);
3424 qemu_opts_del(chr->opts);
3429 ChardevInfoList *qmp_query_chardev(Error **errp)
3431 ChardevInfoList *chr_list = NULL;
3432 CharDriverState *chr;
3434 QTAILQ_FOREACH(chr, &chardevs, next) {
3435 ChardevInfoList *info = g_malloc0(sizeof(*info));
3436 info->value = g_malloc0(sizeof(*info->value));
3437 info->value->label = g_strdup(chr->label);
3438 info->value->filename = g_strdup(chr->filename);
3440 info->next = chr_list;
3447 CharDriverState *qemu_chr_find(const char *name)
3449 CharDriverState *chr;
3451 QTAILQ_FOREACH(chr, &chardevs, next) {
3452 if (strcmp(chr->label, name) != 0)
3459 /* Get a character (serial) device interface. */
3460 CharDriverState *qemu_char_get_next_serial(void)
3462 static int next_serial;
3463 CharDriverState *chr;
3465 /* FIXME: This function needs to go away: use chardev properties! */
3467 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3468 chr = serial_hds[next_serial++];
3469 qemu_chr_fe_claim_no_fail(chr);
3475 QemuOptsList qemu_chardev_opts = {
3477 .implied_opt_name = "backend",
3478 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3482 .type = QEMU_OPT_STRING,
3485 .type = QEMU_OPT_STRING,
3488 .type = QEMU_OPT_STRING,
3491 .type = QEMU_OPT_STRING,
3493 .name = "localaddr",
3494 .type = QEMU_OPT_STRING,
3496 .name = "localport",
3497 .type = QEMU_OPT_STRING,
3500 .type = QEMU_OPT_NUMBER,
3503 .type = QEMU_OPT_BOOL,
3506 .type = QEMU_OPT_BOOL,
3509 .type = QEMU_OPT_BOOL,
3512 .type = QEMU_OPT_BOOL,
3515 .type = QEMU_OPT_BOOL,
3518 .type = QEMU_OPT_BOOL,
3521 .type = QEMU_OPT_NUMBER,
3524 .type = QEMU_OPT_NUMBER,
3527 .type = QEMU_OPT_NUMBER,
3530 .type = QEMU_OPT_NUMBER,
3533 .type = QEMU_OPT_BOOL,
3536 .type = QEMU_OPT_BOOL,
3539 .type = QEMU_OPT_STRING,
3542 .type = QEMU_OPT_NUMBER,
3545 .type = QEMU_OPT_SIZE,
3547 { /* end of list */ }
3553 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3558 error_setg(errp, "input file not supported");
3562 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3563 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3564 if (out == INVALID_HANDLE_VALUE) {
3565 error_setg(errp, "open %s failed", file->out);
3568 return qemu_chr_open_win_file(out);
3571 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3574 return qemu_chr_open_win_path(serial->device);
3577 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3580 error_setg(errp, "character device backend type 'parallel' not supported");
3586 static int qmp_chardev_open_file_source(char *src, int flags,
3591 TFR(fd = qemu_open(src, flags, 0666));
3593 error_setg(errp, "open %s: %s", src, strerror(errno));
3598 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3600 int flags, in = -1, out = -1;
3602 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3603 out = qmp_chardev_open_file_source(file->out, flags, errp);
3604 if (error_is_set(errp)) {
3610 in = qmp_chardev_open_file_source(file->in, flags, errp);
3611 if (error_is_set(errp)) {
3617 return qemu_chr_open_fd(in, out);
3620 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3623 #ifdef HAVE_CHARDEV_TTY
3626 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3627 if (error_is_set(errp)) {
3630 qemu_set_nonblock(fd);
3631 return qemu_chr_open_tty_fd(fd);
3633 error_setg(errp, "character device backend type 'serial' not supported");
3638 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3641 #ifdef HAVE_CHARDEV_PARPORT
3644 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3645 if (error_is_set(errp)) {
3648 return qemu_chr_open_pp_fd(fd);
3650 error_setg(errp, "character device backend type 'parallel' not supported");
3657 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3660 SocketAddress *addr = sock->addr;
3661 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3662 bool is_listen = sock->has_server ? sock->server : true;
3663 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3664 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3668 fd = socket_listen(addr, errp);
3670 fd = socket_connect(addr, errp, NULL, NULL);
3672 if (error_is_set(errp)) {
3675 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3676 is_telnet, is_waitconnect, errp);
3679 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3684 fd = socket_dgram(dgram->remote, dgram->local, errp);
3685 if (error_is_set(errp)) {
3688 return qemu_chr_open_udp_fd(fd);
3691 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3694 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3695 CharDriverState *base, *chr = NULL;
3697 chr = qemu_chr_find(id);
3699 error_setg(errp, "Chardev '%s' already exists", id);
3704 switch (backend->kind) {
3705 case CHARDEV_BACKEND_KIND_FILE:
3706 chr = qmp_chardev_open_file(backend->file, errp);
3708 case CHARDEV_BACKEND_KIND_SERIAL:
3709 chr = qmp_chardev_open_serial(backend->serial, errp);
3711 case CHARDEV_BACKEND_KIND_PARALLEL:
3712 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3714 case CHARDEV_BACKEND_KIND_PIPE:
3715 chr = qemu_chr_open_pipe(backend->pipe);
3717 case CHARDEV_BACKEND_KIND_SOCKET:
3718 chr = qmp_chardev_open_socket(backend->socket, errp);
3720 case CHARDEV_BACKEND_KIND_DGRAM:
3721 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3723 #ifdef HAVE_CHARDEV_TTY
3724 case CHARDEV_BACKEND_KIND_PTY:
3725 chr = qemu_chr_open_pty(id, ret);
3728 case CHARDEV_BACKEND_KIND_NULL:
3729 chr = qemu_chr_open_null();
3731 case CHARDEV_BACKEND_KIND_MUX:
3732 base = qemu_chr_find(backend->mux->chardev);
3734 error_setg(errp, "mux: base chardev %s not found",
3735 backend->mux->chardev);
3738 chr = qemu_chr_open_mux(base);
3740 case CHARDEV_BACKEND_KIND_MSMOUSE:
3741 chr = qemu_chr_open_msmouse();
3743 #ifdef CONFIG_BRLAPI
3744 case CHARDEV_BACKEND_KIND_BRAILLE:
3745 chr = chr_baum_init();
3748 case CHARDEV_BACKEND_KIND_STDIO:
3749 chr = qemu_chr_open_stdio(backend->stdio);
3752 case CHARDEV_BACKEND_KIND_CONSOLE:
3753 chr = qemu_chr_open_win_con();
3757 case CHARDEV_BACKEND_KIND_SPICEVMC:
3758 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3760 case CHARDEV_BACKEND_KIND_SPICEPORT:
3761 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3764 case CHARDEV_BACKEND_KIND_VC:
3765 chr = vc_init(backend->vc);
3767 case CHARDEV_BACKEND_KIND_MEMORY:
3768 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3771 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3775 if (chr == NULL && !error_is_set(errp)) {
3776 error_setg(errp, "Failed to create chardev");
3779 chr->label = g_strdup(id);
3780 chr->avail_connections =
3781 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3782 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3790 void qmp_chardev_remove(const char *id, Error **errp)
3792 CharDriverState *chr;
3794 chr = qemu_chr_find(id);
3796 error_setg(errp, "Chardev '%s' not found", id);
3799 if (chr->chr_can_read || chr->chr_read ||
3800 chr->chr_event || chr->handler_opaque) {
3801 error_setg(errp, "Chardev '%s' is busy", id);
3804 qemu_chr_delete(chr);
3807 static void register_types(void)
3809 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3810 register_char_driver("socket", qemu_chr_open_socket);
3811 register_char_driver("udp", qemu_chr_open_udp);
3812 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3813 qemu_chr_parse_ringbuf);
3814 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3815 qemu_chr_parse_file_out);
3816 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3817 qemu_chr_parse_stdio);
3818 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3819 qemu_chr_parse_serial);
3820 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3821 qemu_chr_parse_serial);
3822 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3823 qemu_chr_parse_parallel);
3824 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3825 qemu_chr_parse_parallel);
3826 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3827 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3828 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3829 qemu_chr_parse_pipe);
3832 type_init(register_types);