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(__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
602 IOCanReadHandler *fd_can_read;
607 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
609 return container_of(source, IOWatchPoll, parent);
612 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
614 IOWatchPoll *iwp = io_watch_poll_from_source(source);
615 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
616 bool was_active = iwp->src != NULL;
617 if (was_active == now_active) {
622 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
623 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
624 g_source_attach(iwp->src, NULL);
626 g_source_destroy(iwp->src);
627 g_source_unref(iwp->src);
633 static gboolean io_watch_poll_check(GSource *source)
638 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
644 static void io_watch_poll_finalize(GSource *source)
646 IOWatchPoll *iwp = io_watch_poll_from_source(source);
648 g_source_destroy(iwp->src);
649 g_source_unref(iwp->src);
654 static GSourceFuncs io_watch_poll_funcs = {
655 .prepare = io_watch_poll_prepare,
656 .check = io_watch_poll_check,
657 .dispatch = io_watch_poll_dispatch,
658 .finalize = io_watch_poll_finalize,
661 /* Can only be used for read */
662 static guint io_add_watch_poll(GIOChannel *channel,
663 IOCanReadHandler *fd_can_read,
670 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
671 iwp->fd_can_read = fd_can_read;
672 iwp->opaque = user_data;
673 iwp->channel = channel;
674 iwp->fd_read = (GSourceFunc) fd_read;
677 tag = g_source_attach(&iwp->parent, NULL);
678 g_source_unref(&iwp->parent);
683 static GIOChannel *io_channel_from_fd(int fd)
691 chan = g_io_channel_unix_new(fd);
693 g_io_channel_set_encoding(chan, NULL, NULL);
694 g_io_channel_set_buffered(chan, FALSE);
700 static GIOChannel *io_channel_from_socket(int fd)
709 chan = g_io_channel_win32_new_socket(fd);
711 chan = g_io_channel_unix_new(fd);
714 g_io_channel_set_encoding(chan, NULL, NULL);
715 g_io_channel_set_buffered(chan, FALSE);
720 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
726 while (offset < len) {
729 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
730 &bytes_written, NULL);
731 if (status != G_IO_STATUS_NORMAL) {
732 if (status == G_IO_STATUS_AGAIN) {
733 /* If we've written any data, return a partial write. */
743 } else if (status == G_IO_STATUS_EOF) {
747 offset += bytes_written;
755 typedef struct FDCharDriver {
756 CharDriverState *chr;
757 GIOChannel *fd_in, *fd_out;
760 QTAILQ_ENTRY(FDCharDriver) node;
763 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
765 FDCharDriver *s = chr->opaque;
767 return io_channel_send(s->fd_out, buf, len);
770 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
772 CharDriverState *chr = opaque;
773 FDCharDriver *s = chr->opaque;
775 uint8_t buf[READ_BUF_LEN];
780 if (len > s->max_size) {
787 status = g_io_channel_read_chars(chan, (gchar *)buf,
788 len, &bytes_read, NULL);
789 if (status == G_IO_STATUS_EOF) {
790 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
793 if (status == G_IO_STATUS_NORMAL) {
794 qemu_chr_be_write(chr, buf, bytes_read);
800 static int fd_chr_read_poll(void *opaque)
802 CharDriverState *chr = opaque;
803 FDCharDriver *s = chr->opaque;
805 s->max_size = qemu_chr_be_can_write(chr);
809 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
811 FDCharDriver *s = chr->opaque;
812 return g_io_create_watch(s->fd_out, cond);
815 static void fd_chr_update_read_handler(CharDriverState *chr)
817 FDCharDriver *s = chr->opaque;
820 g_source_remove(s->fd_in_tag);
825 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
829 static void fd_chr_close(struct CharDriverState *chr)
831 FDCharDriver *s = chr->opaque;
834 g_source_remove(s->fd_in_tag);
839 g_io_channel_unref(s->fd_in);
842 g_io_channel_unref(s->fd_out);
846 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
849 /* open a character device to a unix fd */
850 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
852 CharDriverState *chr;
855 chr = g_malloc0(sizeof(CharDriverState));
856 s = g_malloc0(sizeof(FDCharDriver));
857 s->fd_in = io_channel_from_fd(fd_in);
858 s->fd_out = io_channel_from_fd(fd_out);
859 fcntl(fd_out, F_SETFL, O_NONBLOCK);
862 chr->chr_add_watch = fd_chr_add_watch;
863 chr->chr_write = fd_chr_write;
864 chr->chr_update_read_handler = fd_chr_update_read_handler;
865 chr->chr_close = fd_chr_close;
867 qemu_chr_be_generic_open(chr);
872 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
875 char filename_in[256], filename_out[256];
876 const char *filename = opts->device;
878 if (filename == NULL) {
879 fprintf(stderr, "chardev: pipe: no filename given\n");
883 snprintf(filename_in, 256, "%s.in", filename);
884 snprintf(filename_out, 256, "%s.out", filename);
885 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
886 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
887 if (fd_in < 0 || fd_out < 0) {
892 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
897 return qemu_chr_open_fd(fd_in, fd_out);
900 /* init terminal so that we can grab keys */
901 static struct termios oldtty;
902 static int old_fd0_flags;
903 static bool stdio_allow_signal;
905 static void term_exit(void)
907 tcsetattr (0, TCSANOW, &oldtty);
908 fcntl(0, F_SETFL, old_fd0_flags);
911 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
917 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
918 |INLCR|IGNCR|ICRNL|IXON);
919 tty.c_oflag |= OPOST;
920 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
921 tty.c_cflag &= ~(CSIZE|PARENB);
926 /* if graphical mode, we allow Ctrl-C handling */
927 if (!stdio_allow_signal)
928 tty.c_lflag &= ~ISIG;
930 tcsetattr (0, TCSANOW, &tty);
933 static void qemu_chr_close_stdio(struct CharDriverState *chr)
939 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
941 CharDriverState *chr;
943 if (is_daemonized()) {
944 error_report("cannot use stdio with -daemonize");
947 old_fd0_flags = fcntl(0, F_GETFL);
948 tcgetattr (0, &oldtty);
949 fcntl(0, F_SETFL, O_NONBLOCK);
952 chr = qemu_chr_open_fd(0, 1);
953 chr->chr_close = qemu_chr_close_stdio;
954 chr->chr_set_echo = qemu_chr_set_echo_stdio;
955 stdio_allow_signal = display_type != DT_NOGRAPHIC;
956 if (opts->has_signal) {
957 stdio_allow_signal = opts->signal;
959 qemu_chr_fe_set_echo(chr, false);
965 /* Once Solaris has openpty(), this is going to be removed. */
966 static int openpty(int *amaster, int *aslave, char *name,
967 struct termios *termp, struct winsize *winp)
970 int mfd = -1, sfd = -1;
972 *amaster = *aslave = -1;
974 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
978 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
981 if ((slave = ptsname(mfd)) == NULL)
984 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
987 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
988 (termp != NULL && tcgetattr(sfd, termp) < 0))
996 ioctl(sfd, TIOCSWINSZ, winp);
1007 static void cfmakeraw (struct termios *termios_p)
1009 termios_p->c_iflag &=
1010 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1011 termios_p->c_oflag &= ~OPOST;
1012 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1013 termios_p->c_cflag &= ~(CSIZE|PARENB);
1014 termios_p->c_cflag |= CS8;
1016 termios_p->c_cc[VMIN] = 0;
1017 termios_p->c_cc[VTIME] = 0;
1021 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1022 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1023 || defined(__GLIBC__)
1025 #define HAVE_CHARDEV_TTY 1
1035 static void pty_chr_update_read_handler(CharDriverState *chr);
1036 static void pty_chr_state(CharDriverState *chr, int connected);
1038 static gboolean pty_chr_timer(gpointer opaque)
1040 struct CharDriverState *chr = opaque;
1041 PtyCharDriver *s = chr->opaque;
1048 pty_chr_update_read_handler(chr);
1054 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1056 PtyCharDriver *s = chr->opaque;
1059 g_source_remove(s->timer_tag);
1064 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1066 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1070 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1072 PtyCharDriver *s = chr->opaque;
1074 if (!s->connected) {
1075 /* guest sends data, check for (re-)connect */
1076 pty_chr_update_read_handler(chr);
1079 return io_channel_send(s->fd, buf, len);
1082 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1084 PtyCharDriver *s = chr->opaque;
1085 return g_io_create_watch(s->fd, cond);
1088 static int pty_chr_read_poll(void *opaque)
1090 CharDriverState *chr = opaque;
1091 PtyCharDriver *s = chr->opaque;
1093 s->read_bytes = qemu_chr_be_can_write(chr);
1094 return s->read_bytes;
1097 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1099 CharDriverState *chr = opaque;
1100 PtyCharDriver *s = chr->opaque;
1102 uint8_t buf[READ_BUF_LEN];
1106 if (len > s->read_bytes)
1107 len = s->read_bytes;
1110 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1111 if (status != G_IO_STATUS_NORMAL) {
1112 pty_chr_state(chr, 0);
1115 pty_chr_state(chr, 1);
1116 qemu_chr_be_write(chr, buf, size);
1121 static void pty_chr_update_read_handler(CharDriverState *chr)
1123 PtyCharDriver *s = chr->opaque;
1126 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1127 pfd.events = G_IO_OUT;
1130 if (pfd.revents & G_IO_HUP) {
1131 pty_chr_state(chr, 0);
1133 pty_chr_state(chr, 1);
1137 static void pty_chr_state(CharDriverState *chr, int connected)
1139 PtyCharDriver *s = chr->opaque;
1143 g_source_remove(s->fd_tag);
1147 /* (re-)connect poll interval for idle guests: once per second.
1148 * We check more frequently in case the guests sends data to
1149 * the virtual device linked to our pty. */
1150 pty_chr_rearm_timer(chr, 1000);
1153 g_source_remove(s->timer_tag);
1156 if (!s->connected) {
1157 qemu_chr_be_generic_open(chr);
1159 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1165 static void pty_chr_close(struct CharDriverState *chr)
1167 PtyCharDriver *s = chr->opaque;
1171 g_source_remove(s->fd_tag);
1174 fd = g_io_channel_unix_get_fd(s->fd);
1175 g_io_channel_unref(s->fd);
1178 g_source_remove(s->timer_tag);
1182 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1185 static CharDriverState *qemu_chr_open_pty(const char *id,
1188 CharDriverState *chr;
1191 int master_fd, slave_fd;
1192 #if defined(__OpenBSD__) || defined(__DragonFly__)
1193 char pty_name[PATH_MAX];
1194 #define q_ptsname(x) pty_name
1196 char *pty_name = NULL;
1197 #define q_ptsname(x) ptsname(x)
1200 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1204 /* Set raw attributes on the pty. */
1205 tcgetattr(slave_fd, &tty);
1207 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1210 chr = g_malloc0(sizeof(CharDriverState));
1212 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1213 ret->pty = g_strdup(q_ptsname(master_fd));
1214 ret->has_pty = true;
1216 fprintf(stderr, "char device redirected to %s (label %s)\n",
1217 q_ptsname(master_fd), id);
1219 s = g_malloc0(sizeof(PtyCharDriver));
1221 chr->chr_write = pty_chr_write;
1222 chr->chr_update_read_handler = pty_chr_update_read_handler;
1223 chr->chr_close = pty_chr_close;
1224 chr->chr_add_watch = pty_chr_add_watch;
1226 s->fd = io_channel_from_fd(master_fd);
1232 static void tty_serial_init(int fd, int speed,
1233 int parity, int data_bits, int stop_bits)
1239 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1240 speed, parity, data_bits, stop_bits);
1242 tcgetattr (fd, &tty);
1244 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1245 speed = speed * 10 / 11;
1262 /* Non-Posix values follow. They may be unsupported on some systems. */
1264 check_speed(115200);
1266 check_speed(230400);
1269 check_speed(460800);
1272 check_speed(500000);
1275 check_speed(576000);
1278 check_speed(921600);
1281 check_speed(1000000);
1284 check_speed(1152000);
1287 check_speed(1500000);
1290 check_speed(2000000);
1293 check_speed(2500000);
1296 check_speed(3000000);
1299 check_speed(3500000);
1302 check_speed(4000000);
1307 cfsetispeed(&tty, spd);
1308 cfsetospeed(&tty, spd);
1310 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1311 |INLCR|IGNCR|ICRNL|IXON);
1312 tty.c_oflag |= OPOST;
1313 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1314 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1335 tty.c_cflag |= PARENB;
1338 tty.c_cflag |= PARENB | PARODD;
1342 tty.c_cflag |= CSTOPB;
1344 tcsetattr (fd, TCSANOW, &tty);
1347 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1349 FDCharDriver *s = chr->opaque;
1352 case CHR_IOCTL_SERIAL_SET_PARAMS:
1354 QEMUSerialSetParams *ssp = arg;
1355 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1356 ssp->speed, ssp->parity,
1357 ssp->data_bits, ssp->stop_bits);
1360 case CHR_IOCTL_SERIAL_SET_BREAK:
1362 int enable = *(int *)arg;
1364 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1368 case CHR_IOCTL_SERIAL_GET_TIOCM:
1371 int *targ = (int *)arg;
1372 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1374 if (sarg & TIOCM_CTS)
1375 *targ |= CHR_TIOCM_CTS;
1376 if (sarg & TIOCM_CAR)
1377 *targ |= CHR_TIOCM_CAR;
1378 if (sarg & TIOCM_DSR)
1379 *targ |= CHR_TIOCM_DSR;
1380 if (sarg & TIOCM_RI)
1381 *targ |= CHR_TIOCM_RI;
1382 if (sarg & TIOCM_DTR)
1383 *targ |= CHR_TIOCM_DTR;
1384 if (sarg & TIOCM_RTS)
1385 *targ |= CHR_TIOCM_RTS;
1388 case CHR_IOCTL_SERIAL_SET_TIOCM:
1390 int sarg = *(int *)arg;
1392 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1393 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1394 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1395 if (sarg & CHR_TIOCM_CTS)
1397 if (sarg & CHR_TIOCM_CAR)
1399 if (sarg & CHR_TIOCM_DSR)
1401 if (sarg & CHR_TIOCM_RI)
1403 if (sarg & CHR_TIOCM_DTR)
1405 if (sarg & CHR_TIOCM_RTS)
1407 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1416 static void qemu_chr_close_tty(CharDriverState *chr)
1418 FDCharDriver *s = chr->opaque;
1422 fd = g_io_channel_unix_get_fd(s->fd_in);
1432 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1434 CharDriverState *chr;
1436 tty_serial_init(fd, 115200, 'N', 8, 1);
1437 chr = qemu_chr_open_fd(fd, fd);
1438 chr->chr_ioctl = tty_serial_ioctl;
1439 chr->chr_close = qemu_chr_close_tty;
1442 #endif /* __linux__ || __sun__ */
1444 #if defined(__linux__)
1446 #define HAVE_CHARDEV_PARPORT 1
1451 } ParallelCharDriver;
1453 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1455 if (s->mode != mode) {
1457 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1464 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1466 ParallelCharDriver *drv = chr->opaque;
1471 case CHR_IOCTL_PP_READ_DATA:
1472 if (ioctl(fd, PPRDATA, &b) < 0)
1474 *(uint8_t *)arg = b;
1476 case CHR_IOCTL_PP_WRITE_DATA:
1477 b = *(uint8_t *)arg;
1478 if (ioctl(fd, PPWDATA, &b) < 0)
1481 case CHR_IOCTL_PP_READ_CONTROL:
1482 if (ioctl(fd, PPRCONTROL, &b) < 0)
1484 /* Linux gives only the lowest bits, and no way to know data
1485 direction! For better compatibility set the fixed upper
1487 *(uint8_t *)arg = b | 0xc0;
1489 case CHR_IOCTL_PP_WRITE_CONTROL:
1490 b = *(uint8_t *)arg;
1491 if (ioctl(fd, PPWCONTROL, &b) < 0)
1494 case CHR_IOCTL_PP_READ_STATUS:
1495 if (ioctl(fd, PPRSTATUS, &b) < 0)
1497 *(uint8_t *)arg = b;
1499 case CHR_IOCTL_PP_DATA_DIR:
1500 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1503 case CHR_IOCTL_PP_EPP_READ_ADDR:
1504 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1505 struct ParallelIOArg *parg = arg;
1506 int n = read(fd, parg->buffer, parg->count);
1507 if (n != parg->count) {
1512 case CHR_IOCTL_PP_EPP_READ:
1513 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1514 struct ParallelIOArg *parg = arg;
1515 int n = read(fd, parg->buffer, parg->count);
1516 if (n != parg->count) {
1521 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1522 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1523 struct ParallelIOArg *parg = arg;
1524 int n = write(fd, parg->buffer, parg->count);
1525 if (n != parg->count) {
1530 case CHR_IOCTL_PP_EPP_WRITE:
1531 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1532 struct ParallelIOArg *parg = arg;
1533 int n = write(fd, parg->buffer, parg->count);
1534 if (n != parg->count) {
1545 static void pp_close(CharDriverState *chr)
1547 ParallelCharDriver *drv = chr->opaque;
1550 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1551 ioctl(fd, PPRELEASE);
1554 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1557 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1559 CharDriverState *chr;
1560 ParallelCharDriver *drv;
1562 if (ioctl(fd, PPCLAIM) < 0) {
1567 drv = g_malloc0(sizeof(ParallelCharDriver));
1569 drv->mode = IEEE1284_MODE_COMPAT;
1571 chr = g_malloc0(sizeof(CharDriverState));
1572 chr->chr_write = null_chr_write;
1573 chr->chr_ioctl = pp_ioctl;
1574 chr->chr_close = pp_close;
1577 qemu_chr_be_generic_open(chr);
1581 #endif /* __linux__ */
1583 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1585 #define HAVE_CHARDEV_PARPORT 1
1587 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1589 int fd = (int)(intptr_t)chr->opaque;
1593 case CHR_IOCTL_PP_READ_DATA:
1594 if (ioctl(fd, PPIGDATA, &b) < 0)
1596 *(uint8_t *)arg = b;
1598 case CHR_IOCTL_PP_WRITE_DATA:
1599 b = *(uint8_t *)arg;
1600 if (ioctl(fd, PPISDATA, &b) < 0)
1603 case CHR_IOCTL_PP_READ_CONTROL:
1604 if (ioctl(fd, PPIGCTRL, &b) < 0)
1606 *(uint8_t *)arg = b;
1608 case CHR_IOCTL_PP_WRITE_CONTROL:
1609 b = *(uint8_t *)arg;
1610 if (ioctl(fd, PPISCTRL, &b) < 0)
1613 case CHR_IOCTL_PP_READ_STATUS:
1614 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1616 *(uint8_t *)arg = b;
1624 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1626 CharDriverState *chr;
1628 chr = g_malloc0(sizeof(CharDriverState));
1629 chr->opaque = (void *)(intptr_t)fd;
1630 chr->chr_write = null_chr_write;
1631 chr->chr_ioctl = pp_ioctl;
1640 HANDLE hcom, hrecv, hsend;
1641 OVERLAPPED orecv, osend;
1648 HANDLE hInputReadyEvent;
1649 HANDLE hInputDoneEvent;
1650 HANDLE hInputThread;
1651 uint8_t win_stdio_buf;
1652 } WinStdioCharState;
1654 #define NSENDBUF 2048
1655 #define NRECVBUF 2048
1656 #define MAXCONNECT 1
1657 #define NTIMEOUT 5000
1659 static int win_chr_poll(void *opaque);
1660 static int win_chr_pipe_poll(void *opaque);
1662 static void win_chr_close(CharDriverState *chr)
1664 WinCharState *s = chr->opaque;
1667 CloseHandle(s->hsend);
1671 CloseHandle(s->hrecv);
1675 CloseHandle(s->hcom);
1679 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1681 qemu_del_polling_cb(win_chr_poll, chr);
1683 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1686 static int win_chr_init(CharDriverState *chr, const char *filename)
1688 WinCharState *s = chr->opaque;
1690 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1695 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1697 fprintf(stderr, "Failed CreateEvent\n");
1700 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1702 fprintf(stderr, "Failed CreateEvent\n");
1706 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1707 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1708 if (s->hcom == INVALID_HANDLE_VALUE) {
1709 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1714 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1715 fprintf(stderr, "Failed SetupComm\n");
1719 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1720 size = sizeof(COMMCONFIG);
1721 GetDefaultCommConfig(filename, &comcfg, &size);
1722 comcfg.dcb.DCBlength = sizeof(DCB);
1723 CommConfigDialog(filename, NULL, &comcfg);
1725 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1726 fprintf(stderr, "Failed SetCommState\n");
1730 if (!SetCommMask(s->hcom, EV_ERR)) {
1731 fprintf(stderr, "Failed SetCommMask\n");
1735 cto.ReadIntervalTimeout = MAXDWORD;
1736 if (!SetCommTimeouts(s->hcom, &cto)) {
1737 fprintf(stderr, "Failed SetCommTimeouts\n");
1741 if (!ClearCommError(s->hcom, &err, &comstat)) {
1742 fprintf(stderr, "Failed ClearCommError\n");
1745 qemu_add_polling_cb(win_chr_poll, chr);
1753 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1755 WinCharState *s = chr->opaque;
1756 DWORD len, ret, size, err;
1759 ZeroMemory(&s->osend, sizeof(s->osend));
1760 s->osend.hEvent = s->hsend;
1763 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1765 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1767 err = GetLastError();
1768 if (err == ERROR_IO_PENDING) {
1769 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1787 static int win_chr_read_poll(CharDriverState *chr)
1789 WinCharState *s = chr->opaque;
1791 s->max_size = qemu_chr_be_can_write(chr);
1795 static void win_chr_readfile(CharDriverState *chr)
1797 WinCharState *s = chr->opaque;
1799 uint8_t buf[READ_BUF_LEN];
1802 ZeroMemory(&s->orecv, sizeof(s->orecv));
1803 s->orecv.hEvent = s->hrecv;
1804 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1806 err = GetLastError();
1807 if (err == ERROR_IO_PENDING) {
1808 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1813 qemu_chr_be_write(chr, buf, size);
1817 static void win_chr_read(CharDriverState *chr)
1819 WinCharState *s = chr->opaque;
1821 if (s->len > s->max_size)
1822 s->len = s->max_size;
1826 win_chr_readfile(chr);
1829 static int win_chr_poll(void *opaque)
1831 CharDriverState *chr = opaque;
1832 WinCharState *s = chr->opaque;
1836 ClearCommError(s->hcom, &comerr, &status);
1837 if (status.cbInQue > 0) {
1838 s->len = status.cbInQue;
1839 win_chr_read_poll(chr);
1846 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1848 CharDriverState *chr;
1851 chr = g_malloc0(sizeof(CharDriverState));
1852 s = g_malloc0(sizeof(WinCharState));
1854 chr->chr_write = win_chr_write;
1855 chr->chr_close = win_chr_close;
1857 if (win_chr_init(chr, filename) < 0) {
1862 qemu_chr_be_generic_open(chr);
1866 static int win_chr_pipe_poll(void *opaque)
1868 CharDriverState *chr = opaque;
1869 WinCharState *s = chr->opaque;
1872 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1875 win_chr_read_poll(chr);
1882 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1884 WinCharState *s = chr->opaque;
1892 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1894 fprintf(stderr, "Failed CreateEvent\n");
1897 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1899 fprintf(stderr, "Failed CreateEvent\n");
1903 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1904 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1905 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1907 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1908 if (s->hcom == INVALID_HANDLE_VALUE) {
1909 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1914 ZeroMemory(&ov, sizeof(ov));
1915 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1916 ret = ConnectNamedPipe(s->hcom, &ov);
1918 fprintf(stderr, "Failed ConnectNamedPipe\n");
1922 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1924 fprintf(stderr, "Failed GetOverlappedResult\n");
1926 CloseHandle(ov.hEvent);
1933 CloseHandle(ov.hEvent);
1936 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1945 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1947 const char *filename = opts->device;
1948 CharDriverState *chr;
1951 chr = g_malloc0(sizeof(CharDriverState));
1952 s = g_malloc0(sizeof(WinCharState));
1954 chr->chr_write = win_chr_write;
1955 chr->chr_close = win_chr_close;
1957 if (win_chr_pipe_init(chr, filename) < 0) {
1962 qemu_chr_be_generic_open(chr);
1966 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1968 CharDriverState *chr;
1971 chr = g_malloc0(sizeof(CharDriverState));
1972 s = g_malloc0(sizeof(WinCharState));
1975 chr->chr_write = win_chr_write;
1976 qemu_chr_be_generic_open(chr);
1980 static CharDriverState *qemu_chr_open_win_con(void)
1982 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1985 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1987 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1994 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2004 static void win_stdio_wait_func(void *opaque)
2006 CharDriverState *chr = opaque;
2007 WinStdioCharState *stdio = chr->opaque;
2008 INPUT_RECORD buf[4];
2013 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2017 /* Avoid error storm */
2018 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2022 for (i = 0; i < dwSize; i++) {
2023 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2025 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2027 if (kev->uChar.AsciiChar != 0) {
2028 for (j = 0; j < kev->wRepeatCount; j++) {
2029 if (qemu_chr_be_can_write(chr)) {
2030 uint8_t c = kev->uChar.AsciiChar;
2031 qemu_chr_be_write(chr, &c, 1);
2039 static DWORD WINAPI win_stdio_thread(LPVOID param)
2041 CharDriverState *chr = param;
2042 WinStdioCharState *stdio = chr->opaque;
2048 /* Wait for one byte */
2049 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2051 /* Exit in case of error, continue if nothing read */
2059 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2060 if (stdio->win_stdio_buf == '\r') {
2064 /* Signal the main thread and wait until the byte was eaten */
2065 if (!SetEvent(stdio->hInputReadyEvent)) {
2068 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2074 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2078 static void win_stdio_thread_wait_func(void *opaque)
2080 CharDriverState *chr = opaque;
2081 WinStdioCharState *stdio = chr->opaque;
2083 if (qemu_chr_be_can_write(chr)) {
2084 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2087 SetEvent(stdio->hInputDoneEvent);
2090 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2092 WinStdioCharState *stdio = chr->opaque;
2095 GetConsoleMode(stdio->hStdIn, &dwMode);
2098 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2100 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2104 static void win_stdio_close(CharDriverState *chr)
2106 WinStdioCharState *stdio = chr->opaque;
2108 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2109 CloseHandle(stdio->hInputReadyEvent);
2111 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2112 CloseHandle(stdio->hInputDoneEvent);
2114 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2115 TerminateThread(stdio->hInputThread, 0);
2118 g_free(chr->opaque);
2122 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2124 CharDriverState *chr;
2125 WinStdioCharState *stdio;
2129 chr = g_malloc0(sizeof(CharDriverState));
2130 stdio = g_malloc0(sizeof(WinStdioCharState));
2132 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2133 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2134 fprintf(stderr, "cannot open stdio: invalid handle\n");
2138 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2140 chr->opaque = stdio;
2141 chr->chr_write = win_stdio_write;
2142 chr->chr_close = win_stdio_close;
2145 if (qemu_add_wait_object(stdio->hStdIn,
2146 win_stdio_wait_func, chr)) {
2147 fprintf(stderr, "qemu_add_wait_object: failed\n");
2152 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2153 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2154 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2157 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2158 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2159 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2160 fprintf(stderr, "cannot create stdio thread or event\n");
2163 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2164 win_stdio_thread_wait_func, chr)) {
2165 fprintf(stderr, "qemu_add_wait_object: failed\n");
2169 dwMode |= ENABLE_LINE_INPUT;
2172 /* set the terminal in raw mode */
2173 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2174 dwMode |= ENABLE_PROCESSED_INPUT;
2177 SetConsoleMode(stdio->hStdIn, dwMode);
2179 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2180 qemu_chr_fe_set_echo(chr, false);
2184 #endif /* !_WIN32 */
2187 /***********************************************************/
2188 /* UDP Net console */
2194 uint8_t buf[READ_BUF_LEN];
2200 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2202 NetCharDriver *s = chr->opaque;
2203 gsize bytes_written;
2206 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2207 if (status == G_IO_STATUS_EOF) {
2209 } else if (status != G_IO_STATUS_NORMAL) {
2213 return bytes_written;
2216 static int udp_chr_read_poll(void *opaque)
2218 CharDriverState *chr = opaque;
2219 NetCharDriver *s = chr->opaque;
2221 s->max_size = qemu_chr_be_can_write(chr);
2223 /* If there were any stray characters in the queue process them
2226 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2227 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2229 s->max_size = qemu_chr_be_can_write(chr);
2234 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2236 CharDriverState *chr = opaque;
2237 NetCharDriver *s = chr->opaque;
2238 gsize bytes_read = 0;
2241 if (s->max_size == 0)
2243 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2245 s->bufcnt = bytes_read;
2246 s->bufptr = s->bufcnt;
2247 if (status != G_IO_STATUS_NORMAL) {
2252 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2253 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2255 s->max_size = qemu_chr_be_can_write(chr);
2261 static void udp_chr_update_read_handler(CharDriverState *chr)
2263 NetCharDriver *s = chr->opaque;
2266 g_source_remove(s->tag);
2271 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2275 static void udp_chr_close(CharDriverState *chr)
2277 NetCharDriver *s = chr->opaque;
2279 g_source_remove(s->tag);
2283 g_io_channel_unref(s->chan);
2287 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2290 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2292 CharDriverState *chr = NULL;
2293 NetCharDriver *s = NULL;
2295 chr = g_malloc0(sizeof(CharDriverState));
2296 s = g_malloc0(sizeof(NetCharDriver));
2299 s->chan = io_channel_from_socket(s->fd);
2303 chr->chr_write = udp_chr_write;
2304 chr->chr_update_read_handler = udp_chr_update_read_handler;
2305 chr->chr_close = udp_chr_close;
2309 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2311 Error *local_err = NULL;
2314 fd = inet_dgram_opts(opts, &local_err);
2318 return qemu_chr_open_udp_fd(fd);
2321 /***********************************************************/
2322 /* TCP Net console */
2326 GIOChannel *chan, *listen_chan;
2327 guint tag, listen_tag;
2337 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2339 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2341 TCPCharDriver *s = chr->opaque;
2343 return io_channel_send(s->chan, buf, len);
2345 /* XXX: indicate an error ? */
2350 static int tcp_chr_read_poll(void *opaque)
2352 CharDriverState *chr = opaque;
2353 TCPCharDriver *s = chr->opaque;
2356 s->max_size = qemu_chr_be_can_write(chr);
2361 #define IAC_BREAK 243
2362 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2364 uint8_t *buf, int *size)
2366 /* Handle any telnet client's basic IAC options to satisfy char by
2367 * char mode with no echo. All IAC options will be removed from
2368 * the buf and the do_telnetopt variable will be used to track the
2369 * state of the width of the IAC information.
2371 * IAC commands come in sets of 3 bytes with the exception of the
2372 * "IAC BREAK" command and the double IAC.
2378 for (i = 0; i < *size; i++) {
2379 if (s->do_telnetopt > 1) {
2380 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2381 /* Double IAC means send an IAC */
2385 s->do_telnetopt = 1;
2387 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2388 /* Handle IAC break commands by sending a serial break */
2389 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2394 if (s->do_telnetopt >= 4) {
2395 s->do_telnetopt = 1;
2398 if ((unsigned char)buf[i] == IAC) {
2399 s->do_telnetopt = 2;
2410 static int tcp_get_msgfd(CharDriverState *chr)
2412 TCPCharDriver *s = chr->opaque;
2419 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2421 TCPCharDriver *s = chr->opaque;
2422 struct cmsghdr *cmsg;
2424 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2427 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2428 cmsg->cmsg_level != SOL_SOCKET ||
2429 cmsg->cmsg_type != SCM_RIGHTS)
2432 fd = *((int *)CMSG_DATA(cmsg));
2436 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2439 #ifndef MSG_CMSG_CLOEXEC
2440 qemu_set_cloexec(fd);
2448 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2450 TCPCharDriver *s = chr->opaque;
2451 struct msghdr msg = { NULL, };
2452 struct iovec iov[1];
2454 struct cmsghdr cmsg;
2455 char control[CMSG_SPACE(sizeof(int))];
2460 iov[0].iov_base = buf;
2461 iov[0].iov_len = len;
2465 msg.msg_control = &msg_control;
2466 msg.msg_controllen = sizeof(msg_control);
2468 #ifdef MSG_CMSG_CLOEXEC
2469 flags |= MSG_CMSG_CLOEXEC;
2471 ret = recvmsg(s->fd, &msg, flags);
2472 if (ret > 0 && s->is_unix) {
2473 unix_process_msgfd(chr, &msg);
2479 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2481 TCPCharDriver *s = chr->opaque;
2482 return qemu_recv(s->fd, buf, len, 0);
2486 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2488 TCPCharDriver *s = chr->opaque;
2489 return g_io_create_watch(s->chan, cond);
2492 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2494 CharDriverState *chr = opaque;
2495 TCPCharDriver *s = chr->opaque;
2496 uint8_t buf[READ_BUF_LEN];
2499 if (!s->connected || s->max_size <= 0) {
2503 if (len > s->max_size)
2505 size = tcp_chr_recv(chr, (void *)buf, len);
2507 /* connection closed */
2509 if (s->listen_chan) {
2510 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2513 g_source_remove(s->tag);
2516 g_io_channel_unref(s->chan);
2520 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2521 } else if (size > 0) {
2522 if (s->do_telnetopt)
2523 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2525 qemu_chr_be_write(chr, buf, size);
2532 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2534 return qemu_chr_open_fd(eventfd, eventfd);
2538 static void tcp_chr_connect(void *opaque)
2540 CharDriverState *chr = opaque;
2541 TCPCharDriver *s = chr->opaque;
2545 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2547 qemu_chr_be_generic_open(chr);
2550 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2551 static void tcp_chr_telnet_init(int fd)
2554 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2555 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2556 send(fd, (char *)buf, 3, 0);
2557 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2558 send(fd, (char *)buf, 3, 0);
2559 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2560 send(fd, (char *)buf, 3, 0);
2561 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2562 send(fd, (char *)buf, 3, 0);
2565 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2567 TCPCharDriver *s = chr->opaque;
2571 qemu_set_nonblock(fd);
2573 socket_set_nodelay(fd);
2575 s->chan = io_channel_from_socket(fd);
2576 if (s->listen_tag) {
2577 g_source_remove(s->listen_tag);
2580 tcp_chr_connect(chr);
2585 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2587 CharDriverState *chr = opaque;
2588 TCPCharDriver *s = chr->opaque;
2589 struct sockaddr_in saddr;
2591 struct sockaddr_un uaddr;
2593 struct sockaddr *addr;
2600 len = sizeof(uaddr);
2601 addr = (struct sockaddr *)&uaddr;
2605 len = sizeof(saddr);
2606 addr = (struct sockaddr *)&saddr;
2608 fd = qemu_accept(s->listen_fd, addr, &len);
2609 if (fd < 0 && errno != EINTR) {
2611 } else if (fd >= 0) {
2612 if (s->do_telnetopt)
2613 tcp_chr_telnet_init(fd);
2617 if (tcp_chr_add_client(chr, fd) < 0)
2623 static void tcp_chr_close(CharDriverState *chr)
2625 TCPCharDriver *s = chr->opaque;
2628 g_source_remove(s->tag);
2632 g_io_channel_unref(s->chan);
2636 if (s->listen_fd >= 0) {
2637 if (s->listen_tag) {
2638 g_source_remove(s->listen_tag);
2641 if (s->listen_chan) {
2642 g_io_channel_unref(s->listen_chan);
2644 closesocket(s->listen_fd);
2647 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2650 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2651 bool is_listen, bool is_telnet,
2652 bool is_waitconnect,
2655 CharDriverState *chr = NULL;
2656 TCPCharDriver *s = NULL;
2657 char host[NI_MAXHOST], serv[NI_MAXSERV];
2658 const char *left = "", *right = "";
2659 struct sockaddr_storage ss;
2660 socklen_t ss_len = sizeof(ss);
2662 memset(&ss, 0, ss_len);
2663 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2664 error_setg(errp, "getsockname: %s", strerror(errno));
2668 chr = g_malloc0(sizeof(CharDriverState));
2669 s = g_malloc0(sizeof(TCPCharDriver));
2676 chr->filename = g_malloc(256);
2677 switch (ss.ss_family) {
2681 snprintf(chr->filename, 256, "unix:%s%s",
2682 ((struct sockaddr_un *)(&ss))->sun_path,
2683 is_listen ? ",server" : "");
2691 s->do_nodelay = do_nodelay;
2692 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2693 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2694 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2695 is_telnet ? "telnet" : "tcp",
2696 left, host, right, serv,
2697 is_listen ? ",server" : "");
2702 chr->chr_write = tcp_chr_write;
2703 chr->chr_close = tcp_chr_close;
2704 chr->get_msgfd = tcp_get_msgfd;
2705 chr->chr_add_client = tcp_chr_add_client;
2706 chr->chr_add_watch = tcp_chr_add_watch;
2710 s->listen_chan = io_channel_from_socket(s->listen_fd);
2711 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2713 s->do_telnetopt = 1;
2718 socket_set_nodelay(fd);
2719 s->chan = io_channel_from_socket(s->fd);
2720 tcp_chr_connect(chr);
2723 if (is_listen && is_waitconnect) {
2724 printf("QEMU waiting for connection on: %s\n",
2726 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2727 qemu_set_nonblock(s->listen_fd);
2732 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2734 CharDriverState *chr = NULL;
2735 Error *local_err = NULL;
2743 is_listen = qemu_opt_get_bool(opts, "server", 0);
2744 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2745 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2746 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2747 is_unix = qemu_opt_get(opts, "path") != NULL;
2753 fd = unix_listen_opts(opts, &local_err);
2755 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2759 fd = inet_listen_opts(opts, 0, &local_err);
2761 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2768 if (!is_waitconnect)
2769 qemu_set_nonblock(fd);
2771 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2772 is_waitconnect, &local_err);
2773 if (error_is_set(&local_err)) {
2781 qerror_report_err(local_err);
2782 error_free(local_err);
2788 g_free(chr->opaque);
2794 /*********************************************************/
2795 /* Ring buffer chardev */
2802 } RingBufCharDriver;
2804 static size_t ringbuf_count(const CharDriverState *chr)
2806 const RingBufCharDriver *d = chr->opaque;
2808 return d->prod - d->cons;
2811 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2813 RingBufCharDriver *d = chr->opaque;
2816 if (!buf || (len < 0)) {
2820 for (i = 0; i < len; i++ ) {
2821 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2822 if (d->prod - d->cons > d->size) {
2823 d->cons = d->prod - d->size;
2830 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2832 RingBufCharDriver *d = chr->opaque;
2835 for (i = 0; i < len && d->cons != d->prod; i++) {
2836 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2842 static void ringbuf_chr_close(struct CharDriverState *chr)
2844 RingBufCharDriver *d = chr->opaque;
2851 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2854 CharDriverState *chr;
2855 RingBufCharDriver *d;
2857 chr = g_malloc0(sizeof(CharDriverState));
2858 d = g_malloc(sizeof(*d));
2860 d->size = opts->has_size ? opts->size : 65536;
2862 /* The size must be power of 2 */
2863 if (d->size & (d->size - 1)) {
2864 error_setg(errp, "size of ringbuf chardev must be power of two");
2870 d->cbuf = g_malloc0(d->size);
2873 chr->chr_write = ringbuf_chr_write;
2874 chr->chr_close = ringbuf_chr_close;
2884 static bool chr_is_ringbuf(const CharDriverState *chr)
2886 return chr->chr_write == ringbuf_chr_write;
2889 void qmp_ringbuf_write(const char *device, const char *data,
2890 bool has_format, enum DataFormat format,
2893 CharDriverState *chr;
2894 const uint8_t *write_data;
2898 chr = qemu_chr_find(device);
2900 error_setg(errp, "Device '%s' not found", device);
2904 if (!chr_is_ringbuf(chr)) {
2905 error_setg(errp,"%s is not a ringbuf device", device);
2909 if (has_format && (format == DATA_FORMAT_BASE64)) {
2910 write_data = g_base64_decode(data, &write_count);
2912 write_data = (uint8_t *)data;
2913 write_count = strlen(data);
2916 ret = ringbuf_chr_write(chr, write_data, write_count);
2918 if (write_data != (uint8_t *)data) {
2919 g_free((void *)write_data);
2923 error_setg(errp, "Failed to write to device %s", device);
2928 char *qmp_ringbuf_read(const char *device, int64_t size,
2929 bool has_format, enum DataFormat format,
2932 CharDriverState *chr;
2937 chr = qemu_chr_find(device);
2939 error_setg(errp, "Device '%s' not found", device);
2943 if (!chr_is_ringbuf(chr)) {
2944 error_setg(errp,"%s is not a ringbuf device", device);
2949 error_setg(errp, "size must be greater than zero");
2953 count = ringbuf_count(chr);
2954 size = size > count ? count : size;
2955 read_data = g_malloc(size + 1);
2957 ringbuf_chr_read(chr, read_data, size);
2959 if (has_format && (format == DATA_FORMAT_BASE64)) {
2960 data = g_base64_encode(read_data, size);
2964 * FIXME should read only complete, valid UTF-8 characters up
2965 * to @size bytes. Invalid sequences should be replaced by a
2966 * suitable replacement character. Except when (and only
2967 * when) ring buffer lost characters since last read, initial
2968 * continuation characters should be dropped.
2970 read_data[size] = 0;
2971 data = (char *)read_data;
2977 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2979 char host[65], port[33], width[8], height[8];
2983 Error *local_err = NULL;
2985 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2986 if (error_is_set(&local_err)) {
2987 qerror_report_err(local_err);
2988 error_free(local_err);
2992 if (strstart(filename, "mon:", &p)) {
2994 qemu_opt_set(opts, "mux", "on");
2997 if (strcmp(filename, "null") == 0 ||
2998 strcmp(filename, "pty") == 0 ||
2999 strcmp(filename, "msmouse") == 0 ||
3000 strcmp(filename, "braille") == 0 ||
3001 strcmp(filename, "stdio") == 0) {
3002 qemu_opt_set(opts, "backend", filename);
3005 if (strstart(filename, "vc", &p)) {
3006 qemu_opt_set(opts, "backend", "vc");
3008 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3010 qemu_opt_set(opts, "width", width);
3011 qemu_opt_set(opts, "height", height);
3012 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3014 qemu_opt_set(opts, "cols", width);
3015 qemu_opt_set(opts, "rows", height);
3022 if (strcmp(filename, "con:") == 0) {
3023 qemu_opt_set(opts, "backend", "console");
3026 if (strstart(filename, "COM", NULL)) {
3027 qemu_opt_set(opts, "backend", "serial");
3028 qemu_opt_set(opts, "path", filename);
3031 if (strstart(filename, "file:", &p)) {
3032 qemu_opt_set(opts, "backend", "file");
3033 qemu_opt_set(opts, "path", p);
3036 if (strstart(filename, "pipe:", &p)) {
3037 qemu_opt_set(opts, "backend", "pipe");
3038 qemu_opt_set(opts, "path", p);
3041 if (strstart(filename, "tcp:", &p) ||
3042 strstart(filename, "telnet:", &p)) {
3043 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3045 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3048 qemu_opt_set(opts, "backend", "socket");
3049 qemu_opt_set(opts, "host", host);
3050 qemu_opt_set(opts, "port", port);
3051 if (p[pos] == ',') {
3052 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3055 if (strstart(filename, "telnet:", &p))
3056 qemu_opt_set(opts, "telnet", "on");
3059 if (strstart(filename, "udp:", &p)) {
3060 qemu_opt_set(opts, "backend", "udp");
3061 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3063 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3067 qemu_opt_set(opts, "host", host);
3068 qemu_opt_set(opts, "port", port);
3069 if (p[pos] == '@') {
3071 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3073 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3077 qemu_opt_set(opts, "localaddr", host);
3078 qemu_opt_set(opts, "localport", port);
3082 if (strstart(filename, "unix:", &p)) {
3083 qemu_opt_set(opts, "backend", "socket");
3084 if (qemu_opts_do_parse(opts, p, "path") != 0)
3088 if (strstart(filename, "/dev/parport", NULL) ||
3089 strstart(filename, "/dev/ppi", NULL)) {
3090 qemu_opt_set(opts, "backend", "parport");
3091 qemu_opt_set(opts, "path", filename);
3094 if (strstart(filename, "/dev/", NULL)) {
3095 qemu_opt_set(opts, "backend", "tty");
3096 qemu_opt_set(opts, "path", filename);
3101 qemu_opts_del(opts);
3105 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3108 const char *path = qemu_opt_get(opts, "path");
3111 error_setg(errp, "chardev: file: no filename given");
3114 backend->file = g_new0(ChardevFile, 1);
3115 backend->file->out = g_strdup(path);
3118 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3121 backend->stdio = g_new0(ChardevStdio, 1);
3122 backend->stdio->has_signal = true;
3123 backend->stdio->signal =
3124 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3127 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3130 const char *device = qemu_opt_get(opts, "path");
3132 if (device == NULL) {
3133 error_setg(errp, "chardev: serial/tty: no device path given");
3136 backend->serial = g_new0(ChardevHostdev, 1);
3137 backend->serial->device = g_strdup(device);
3140 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3143 const char *device = qemu_opt_get(opts, "path");
3145 if (device == NULL) {
3146 error_setg(errp, "chardev: parallel: no device path given");
3149 backend->parallel = g_new0(ChardevHostdev, 1);
3150 backend->parallel->device = g_strdup(device);
3153 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3156 const char *device = qemu_opt_get(opts, "path");
3158 if (device == NULL) {
3159 error_setg(errp, "chardev: pipe: no device path given");
3162 backend->pipe = g_new0(ChardevHostdev, 1);
3163 backend->pipe->device = g_strdup(device);
3166 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3171 backend->memory = g_new0(ChardevRingbuf, 1);
3173 val = qemu_opt_get_number(opts, "size", 0);
3175 backend->memory->has_size = true;
3176 backend->memory->size = val;
3180 typedef struct CharDriver {
3183 CharDriverState *(*open)(QemuOpts *opts);
3184 /* new, qapi-based */
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, int 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);
3251 const char *bid = NULL;
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 if (error_is_set(errp)) {
3283 chr = qemu_chr_find(id);
3286 qapi_free_ChardevBackend(backend);
3287 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 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3303 if (qemu_opt_get_bool(opts, "mux", 0)) {
3304 CharDriverState *base = chr;
3305 int len = strlen(qemu_opts_id(opts)) + 6;
3306 base->label = g_malloc(len);
3307 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3308 chr = qemu_chr_open_mux(base);
3309 chr->filename = base->filename;
3310 chr->avail_connections = MAX_MUX;
3311 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3313 chr->avail_connections = 1;
3315 chr->label = g_strdup(qemu_opts_id(opts));
3320 qemu_opts_del(opts);
3324 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3327 CharDriverState *chr;
3331 if (strstart(filename, "chardev:", &p)) {
3332 return qemu_chr_find(p);
3335 opts = qemu_chr_parse_compat(label, filename);
3339 chr = qemu_chr_new_from_opts(opts, init, &err);
3340 if (error_is_set(&err)) {
3341 fprintf(stderr, "%s\n", error_get_pretty(err));
3344 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3345 qemu_chr_fe_claim_no_fail(chr);
3346 monitor_init(chr, MONITOR_USE_READLINE);
3351 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3353 if (chr->chr_set_echo) {
3354 chr->chr_set_echo(chr, echo);
3358 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3360 if (chr->fe_open == fe_open) {
3363 chr->fe_open = fe_open;
3364 if (chr->chr_set_fe_open) {
3365 chr->chr_set_fe_open(chr, fe_open);
3369 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3370 GIOFunc func, void *user_data)
3375 if (s->chr_add_watch == NULL) {
3379 src = s->chr_add_watch(s, cond);
3380 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3381 tag = g_source_attach(src, NULL);
3382 g_source_unref(src);
3387 int qemu_chr_fe_claim(CharDriverState *s)
3389 if (s->avail_connections < 1) {
3392 s->avail_connections--;
3396 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3398 if (qemu_chr_fe_claim(s) != 0) {
3399 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3400 __func__, s->label);
3405 void qemu_chr_fe_release(CharDriverState *s)
3407 s->avail_connections++;
3410 void qemu_chr_delete(CharDriverState *chr)
3412 QTAILQ_REMOVE(&chardevs, chr, next);
3413 if (chr->chr_close) {
3414 chr->chr_close(chr);
3416 g_free(chr->filename);
3419 qemu_opts_del(chr->opts);
3424 ChardevInfoList *qmp_query_chardev(Error **errp)
3426 ChardevInfoList *chr_list = NULL;
3427 CharDriverState *chr;
3429 QTAILQ_FOREACH(chr, &chardevs, next) {
3430 ChardevInfoList *info = g_malloc0(sizeof(*info));
3431 info->value = g_malloc0(sizeof(*info->value));
3432 info->value->label = g_strdup(chr->label);
3433 info->value->filename = g_strdup(chr->filename);
3435 info->next = chr_list;
3442 CharDriverState *qemu_chr_find(const char *name)
3444 CharDriverState *chr;
3446 QTAILQ_FOREACH(chr, &chardevs, next) {
3447 if (strcmp(chr->label, name) != 0)
3454 /* Get a character (serial) device interface. */
3455 CharDriverState *qemu_char_get_next_serial(void)
3457 static int next_serial;
3458 CharDriverState *chr;
3460 /* FIXME: This function needs to go away: use chardev properties! */
3462 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3463 chr = serial_hds[next_serial++];
3464 qemu_chr_fe_claim_no_fail(chr);
3470 QemuOptsList qemu_chardev_opts = {
3472 .implied_opt_name = "backend",
3473 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3477 .type = QEMU_OPT_STRING,
3480 .type = QEMU_OPT_STRING,
3483 .type = QEMU_OPT_STRING,
3486 .type = QEMU_OPT_STRING,
3488 .name = "localaddr",
3489 .type = QEMU_OPT_STRING,
3491 .name = "localport",
3492 .type = QEMU_OPT_STRING,
3495 .type = QEMU_OPT_NUMBER,
3498 .type = QEMU_OPT_BOOL,
3501 .type = QEMU_OPT_BOOL,
3504 .type = QEMU_OPT_BOOL,
3507 .type = QEMU_OPT_BOOL,
3510 .type = QEMU_OPT_BOOL,
3513 .type = QEMU_OPT_BOOL,
3516 .type = QEMU_OPT_NUMBER,
3519 .type = QEMU_OPT_NUMBER,
3522 .type = QEMU_OPT_NUMBER,
3525 .type = QEMU_OPT_NUMBER,
3528 .type = QEMU_OPT_BOOL,
3531 .type = QEMU_OPT_BOOL,
3534 .type = QEMU_OPT_STRING,
3537 .type = QEMU_OPT_NUMBER,
3540 .type = QEMU_OPT_SIZE,
3542 { /* end of list */ }
3548 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3553 error_setg(errp, "input file not supported");
3557 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3558 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3559 if (out == INVALID_HANDLE_VALUE) {
3560 error_setg(errp, "open %s failed", file->out);
3563 return qemu_chr_open_win_file(out);
3566 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3569 return qemu_chr_open_win_path(serial->device);
3572 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3575 error_setg(errp, "character device backend type 'parallel' not supported");
3581 static int qmp_chardev_open_file_source(char *src, int flags,
3586 TFR(fd = qemu_open(src, flags, 0666));
3588 error_setg(errp, "open %s: %s", src, strerror(errno));
3593 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3595 int flags, in = -1, out = -1;
3597 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3598 out = qmp_chardev_open_file_source(file->out, flags, errp);
3599 if (error_is_set(errp)) {
3605 in = qmp_chardev_open_file_source(file->in, flags, errp);
3606 if (error_is_set(errp)) {
3612 return qemu_chr_open_fd(in, out);
3615 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3618 #ifdef HAVE_CHARDEV_TTY
3621 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3622 if (error_is_set(errp)) {
3625 qemu_set_nonblock(fd);
3626 return qemu_chr_open_tty_fd(fd);
3628 error_setg(errp, "character device backend type 'serial' not supported");
3633 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3636 #ifdef HAVE_CHARDEV_PARPORT
3639 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3640 if (error_is_set(errp)) {
3643 return qemu_chr_open_pp_fd(fd);
3645 error_setg(errp, "character device backend type 'parallel' not supported");
3652 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3655 SocketAddress *addr = sock->addr;
3656 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3657 bool is_listen = sock->has_server ? sock->server : true;
3658 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3659 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3663 fd = socket_listen(addr, errp);
3665 fd = socket_connect(addr, errp, NULL, NULL);
3667 if (error_is_set(errp)) {
3670 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3671 is_telnet, is_waitconnect, errp);
3674 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3679 fd = socket_dgram(dgram->remote, dgram->local, errp);
3680 if (error_is_set(errp)) {
3683 return qemu_chr_open_udp_fd(fd);
3686 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3689 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3690 CharDriverState *base, *chr = NULL;
3692 chr = qemu_chr_find(id);
3694 error_setg(errp, "Chardev '%s' already exists", id);
3699 switch (backend->kind) {
3700 case CHARDEV_BACKEND_KIND_FILE:
3701 chr = qmp_chardev_open_file(backend->file, errp);
3703 case CHARDEV_BACKEND_KIND_SERIAL:
3704 chr = qmp_chardev_open_serial(backend->serial, errp);
3706 case CHARDEV_BACKEND_KIND_PARALLEL:
3707 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3709 case CHARDEV_BACKEND_KIND_PIPE:
3710 chr = qemu_chr_open_pipe(backend->pipe);
3712 case CHARDEV_BACKEND_KIND_SOCKET:
3713 chr = qmp_chardev_open_socket(backend->socket, errp);
3715 case CHARDEV_BACKEND_KIND_DGRAM:
3716 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3718 #ifdef HAVE_CHARDEV_TTY
3719 case CHARDEV_BACKEND_KIND_PTY:
3720 chr = qemu_chr_open_pty(id, ret);
3723 case CHARDEV_BACKEND_KIND_NULL:
3724 chr = qemu_chr_open_null();
3726 case CHARDEV_BACKEND_KIND_MUX:
3727 base = qemu_chr_find(backend->mux->chardev);
3729 error_setg(errp, "mux: base chardev %s not found",
3730 backend->mux->chardev);
3733 chr = qemu_chr_open_mux(base);
3735 case CHARDEV_BACKEND_KIND_MSMOUSE:
3736 chr = qemu_chr_open_msmouse();
3738 #ifdef CONFIG_BRLAPI
3739 case CHARDEV_BACKEND_KIND_BRAILLE:
3740 chr = chr_baum_init();
3743 case CHARDEV_BACKEND_KIND_STDIO:
3744 chr = qemu_chr_open_stdio(backend->stdio);
3747 case CHARDEV_BACKEND_KIND_CONSOLE:
3748 chr = qemu_chr_open_win_con();
3752 case CHARDEV_BACKEND_KIND_SPICEVMC:
3753 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3755 case CHARDEV_BACKEND_KIND_SPICEPORT:
3756 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3759 case CHARDEV_BACKEND_KIND_VC:
3760 chr = vc_init(backend->vc);
3762 case CHARDEV_BACKEND_KIND_MEMORY:
3763 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3766 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3770 if (chr == NULL && !error_is_set(errp)) {
3771 error_setg(errp, "Failed to create chardev");
3774 chr->label = g_strdup(id);
3775 chr->avail_connections =
3776 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3777 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3785 void qmp_chardev_remove(const char *id, Error **errp)
3787 CharDriverState *chr;
3789 chr = qemu_chr_find(id);
3791 error_setg(errp, "Chardev '%s' not found", id);
3794 if (chr->chr_can_read || chr->chr_read ||
3795 chr->chr_event || chr->handler_opaque) {
3796 error_setg(errp, "Chardev '%s' is busy", id);
3799 qemu_chr_delete(chr);
3802 static void register_types(void)
3804 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3805 register_char_driver("socket", qemu_chr_open_socket);
3806 register_char_driver("udp", qemu_chr_open_udp);
3807 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3808 qemu_chr_parse_ringbuf);
3809 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3810 qemu_chr_parse_file_out);
3811 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3812 qemu_chr_parse_stdio);
3813 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3814 qemu_chr_parse_serial);
3815 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3816 qemu_chr_parse_serial);
3817 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3818 qemu_chr_parse_parallel);
3819 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3820 qemu_chr_parse_parallel);
3821 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3822 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3823 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3824 qemu_chr_parse_pipe);
3827 type_init(register_types);