4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "qemu-common.h"
25 #include "monitor/monitor.h"
26 #include "ui/console.h"
27 #include "sysemu/sysemu.h"
28 #include "qemu/timer.h"
29 #include "sysemu/char.h"
31 #include "qmp-commands.h"
41 #include <sys/times.h>
45 #include <sys/ioctl.h>
46 #include <sys/resource.h>
47 #include <sys/socket.h>
48 #include <netinet/in.h>
50 #include <arpa/inet.h>
53 #include <sys/select.h>
56 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
57 #include <dev/ppbus/ppi.h>
58 #include <dev/ppbus/ppbconf.h>
59 #elif defined(__DragonFly__)
60 #include <dev/misc/ppi/ppi.h>
61 #include <bus/ppbus/ppbconf.h>
65 #include <linux/ppdev.h>
66 #include <linux/parport.h>
70 #include <sys/ethernet.h>
71 #include <sys/sockio.h>
72 #include <netinet/arp.h>
73 #include <netinet/in.h>
74 #include <netinet/in_systm.h>
75 #include <netinet/ip.h>
76 #include <netinet/ip_icmp.h> // must come after ip.h
77 #include <netinet/udp.h>
78 #include <netinet/tcp.h>
83 #include "qemu/sockets.h"
84 #include "ui/qemu-spice.h"
86 #define READ_BUF_LEN 4096
88 /***********************************************************/
89 /* character device */
91 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
92 QTAILQ_HEAD_INITIALIZER(chardevs);
94 void qemu_chr_be_event(CharDriverState *s, int event)
96 /* Keep track if the char device is open */
98 case CHR_EVENT_OPENED:
101 case CHR_EVENT_CLOSED:
108 s->chr_event(s->handler_opaque, event);
111 void qemu_chr_be_generic_open(CharDriverState *s)
113 qemu_chr_be_event(s, CHR_EVENT_OPENED);
116 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
118 return s->chr_write(s, buf, len);
121 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
126 while (offset < len) {
128 res = s->chr_write(s, buf + offset, len - offset);
129 if (res == -1 && errno == EAGAIN) {
132 } while (res == -1 && errno == EAGAIN);
148 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
152 return s->chr_ioctl(s, cmd, arg);
155 int qemu_chr_be_can_write(CharDriverState *s)
157 if (!s->chr_can_read)
159 return s->chr_can_read(s->handler_opaque);
162 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
165 s->chr_read(s->handler_opaque, buf, len);
169 int qemu_chr_fe_get_msgfd(CharDriverState *s)
171 return s->get_msgfd ? s->get_msgfd(s) : -1;
174 int qemu_chr_add_client(CharDriverState *s, int fd)
176 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
179 void qemu_chr_accept_input(CharDriverState *s)
181 if (s->chr_accept_input)
182 s->chr_accept_input(s);
186 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
188 char buf[READ_BUF_LEN];
191 vsnprintf(buf, sizeof(buf), fmt, ap);
192 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
196 void qemu_chr_add_handlers(CharDriverState *s,
197 IOCanReadHandler *fd_can_read,
198 IOReadHandler *fd_read,
199 IOEventHandler *fd_event,
204 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
209 s->chr_can_read = fd_can_read;
210 s->chr_read = fd_read;
211 s->chr_event = fd_event;
212 s->handler_opaque = opaque;
213 if (s->chr_update_read_handler)
214 s->chr_update_read_handler(s);
216 if (!s->explicit_fe_open) {
217 qemu_chr_fe_set_open(s, fe_open);
220 /* We're connecting to an already opened device, so let's make sure we
221 also get the open event */
222 if (fe_open && s->be_open) {
223 qemu_chr_be_generic_open(s);
227 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
232 static CharDriverState *qemu_chr_open_null(void)
234 CharDriverState *chr;
236 chr = g_malloc0(sizeof(CharDriverState));
237 chr->chr_write = null_chr_write;
238 chr->explicit_be_open = true;
242 /* MUX driver for serial I/O splitting */
244 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
245 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
247 IOCanReadHandler *chr_can_read[MAX_MUX];
248 IOReadHandler *chr_read[MAX_MUX];
249 IOEventHandler *chr_event[MAX_MUX];
250 void *ext_opaque[MAX_MUX];
251 CharDriverState *drv;
256 /* Intermediate input buffer allows to catch escape sequences even if the
257 currently active device is not accepting any input - but only until it
259 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
264 int64_t timestamps_start;
268 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
270 MuxDriver *d = chr->opaque;
272 if (!d->timestamps) {
273 ret = d->drv->chr_write(d->drv, buf, len);
278 for (i = 0; i < len; i++) {
284 ti = qemu_get_clock_ms(rt_clock);
285 if (d->timestamps_start == -1)
286 d->timestamps_start = ti;
287 ti -= d->timestamps_start;
289 snprintf(buf1, sizeof(buf1),
290 "[%02d:%02d:%02d.%03d] ",
295 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
298 ret += d->drv->chr_write(d->drv, buf+i, 1);
299 if (buf[i] == '\n') {
307 static const char * const mux_help[] = {
308 "% h print this help\n\r",
309 "% x exit emulator\n\r",
310 "% s save disk data back to file (if -snapshot)\n\r",
311 "% t toggle console timestamps\n\r"
312 "% b send break (magic sysrq)\n\r",
313 "% c switch between console and monitor\n\r",
318 int term_escape_char = 0x01; /* ctrl-a is used for escape */
319 static void mux_print_help(CharDriverState *chr)
322 char ebuf[15] = "Escape-Char";
323 char cbuf[50] = "\n\r";
325 if (term_escape_char > 0 && term_escape_char < 26) {
326 snprintf(cbuf, sizeof(cbuf), "\n\r");
327 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
329 snprintf(cbuf, sizeof(cbuf),
330 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
333 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
334 for (i = 0; mux_help[i] != NULL; i++) {
335 for (j=0; mux_help[i][j] != '\0'; j++) {
336 if (mux_help[i][j] == '%')
337 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
339 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
344 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
346 if (d->chr_event[mux_nr])
347 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
350 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
352 if (d->term_got_escape) {
353 d->term_got_escape = 0;
354 if (ch == term_escape_char)
363 const char *term = "QEMU: Terminated\n\r";
364 chr->chr_write(chr,(uint8_t *)term,strlen(term));
372 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
375 /* Switch to the next registered device */
376 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
378 if (d->focus >= d->mux_cnt)
380 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
383 d->timestamps = !d->timestamps;
384 d->timestamps_start = -1;
388 } else if (ch == term_escape_char) {
389 d->term_got_escape = 1;
397 static void mux_chr_accept_input(CharDriverState *chr)
399 MuxDriver *d = chr->opaque;
402 while (d->prod[m] != d->cons[m] &&
403 d->chr_can_read[m] &&
404 d->chr_can_read[m](d->ext_opaque[m])) {
405 d->chr_read[m](d->ext_opaque[m],
406 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
410 static int mux_chr_can_read(void *opaque)
412 CharDriverState *chr = opaque;
413 MuxDriver *d = chr->opaque;
416 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
418 if (d->chr_can_read[m])
419 return d->chr_can_read[m](d->ext_opaque[m]);
423 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
425 CharDriverState *chr = opaque;
426 MuxDriver *d = chr->opaque;
430 mux_chr_accept_input (opaque);
432 for(i = 0; i < size; i++)
433 if (mux_proc_byte(chr, d, buf[i])) {
434 if (d->prod[m] == d->cons[m] &&
435 d->chr_can_read[m] &&
436 d->chr_can_read[m](d->ext_opaque[m]))
437 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
439 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
443 static void mux_chr_event(void *opaque, int event)
445 CharDriverState *chr = opaque;
446 MuxDriver *d = chr->opaque;
449 /* Send the event to all registered listeners */
450 for (i = 0; i < d->mux_cnt; i++)
451 mux_chr_send_event(d, i, event);
454 static void mux_chr_update_read_handler(CharDriverState *chr)
456 MuxDriver *d = chr->opaque;
458 if (d->mux_cnt >= MAX_MUX) {
459 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
462 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
463 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
464 d->chr_read[d->mux_cnt] = chr->chr_read;
465 d->chr_event[d->mux_cnt] = chr->chr_event;
466 /* Fix up the real driver with mux routines */
467 if (d->mux_cnt == 0) {
468 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
471 if (d->focus != -1) {
472 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
474 d->focus = d->mux_cnt;
476 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
479 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
481 CharDriverState *chr;
484 chr = g_malloc0(sizeof(CharDriverState));
485 d = g_malloc0(sizeof(MuxDriver));
490 chr->chr_write = mux_chr_write;
491 chr->chr_update_read_handler = mux_chr_update_read_handler;
492 chr->chr_accept_input = mux_chr_accept_input;
493 /* Frontend guest-open / -close notification is not support with muxes */
494 chr->chr_set_fe_open = NULL;
501 int send_all(int fd, const void *buf, int len1)
507 ret = send(fd, buf, len, 0);
509 errno = WSAGetLastError();
510 if (errno != WSAEWOULDBLOCK) {
513 } else if (ret == 0) {
525 int send_all(int fd, const void *_buf, int len1)
528 const uint8_t *buf = _buf;
532 ret = write(fd, buf, len);
534 if (errno != EINTR && errno != EAGAIN)
536 } else if (ret == 0) {
546 int recv_all(int fd, void *_buf, int len1, bool single_read)
552 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
554 if (errno != EINTR && errno != EAGAIN) {
571 typedef struct IOWatchPoll
578 IOCanReadHandler *fd_can_read;
583 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
585 return container_of(source, IOWatchPoll, parent);
588 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
590 IOWatchPoll *iwp = io_watch_poll_from_source(source);
591 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
592 bool was_active = iwp->src != NULL;
593 if (was_active == now_active) {
598 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
599 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
600 g_source_attach(iwp->src, NULL);
602 g_source_destroy(iwp->src);
603 g_source_unref(iwp->src);
609 static gboolean io_watch_poll_check(GSource *source)
614 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
620 static void io_watch_poll_finalize(GSource *source)
622 /* Due to a glib bug, removing the last reference to a source
623 * inside a finalize callback causes recursive locking (and a
624 * deadlock). This is not a problem inside other callbacks,
625 * including dispatch callbacks, so we call io_remove_watch_poll
626 * to remove this source. At this point, iwp->src must
627 * be NULL, or we would leak it.
629 * This would be solved much more elegantly by child sources,
630 * but we support older glib versions that do not have them.
632 IOWatchPoll *iwp = io_watch_poll_from_source(source);
633 assert(iwp->src == NULL);
636 static GSourceFuncs io_watch_poll_funcs = {
637 .prepare = io_watch_poll_prepare,
638 .check = io_watch_poll_check,
639 .dispatch = io_watch_poll_dispatch,
640 .finalize = io_watch_poll_finalize,
643 /* Can only be used for read */
644 static guint io_add_watch_poll(GIOChannel *channel,
645 IOCanReadHandler *fd_can_read,
652 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
653 iwp->fd_can_read = fd_can_read;
654 iwp->opaque = user_data;
655 iwp->channel = channel;
656 iwp->fd_read = (GSourceFunc) fd_read;
659 tag = g_source_attach(&iwp->parent, NULL);
660 g_source_unref(&iwp->parent);
664 static void io_remove_watch_poll(guint tag)
669 g_return_if_fail (tag > 0);
671 source = g_main_context_find_source_by_id(NULL, tag);
672 g_return_if_fail (source != NULL);
674 iwp = io_watch_poll_from_source(source);
676 g_source_destroy(iwp->src);
677 g_source_unref(iwp->src);
680 g_source_destroy(&iwp->parent);
684 static GIOChannel *io_channel_from_fd(int fd)
692 chan = g_io_channel_unix_new(fd);
694 g_io_channel_set_encoding(chan, NULL, NULL);
695 g_io_channel_set_buffered(chan, FALSE);
701 static GIOChannel *io_channel_from_socket(int fd)
710 chan = g_io_channel_win32_new_socket(fd);
712 chan = g_io_channel_unix_new(fd);
715 g_io_channel_set_encoding(chan, NULL, NULL);
716 g_io_channel_set_buffered(chan, FALSE);
721 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
724 GIOStatus status = G_IO_STATUS_NORMAL;
726 while (offset < len && status == G_IO_STATUS_NORMAL) {
727 gsize bytes_written = 0;
729 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
730 &bytes_written, NULL);
731 offset += bytes_written;
738 case G_IO_STATUS_NORMAL:
741 case G_IO_STATUS_AGAIN:
753 typedef struct FDCharDriver {
754 CharDriverState *chr;
755 GIOChannel *fd_in, *fd_out;
758 QTAILQ_ENTRY(FDCharDriver) node;
761 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
763 FDCharDriver *s = chr->opaque;
765 return io_channel_send(s->fd_out, buf, len);
768 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
770 CharDriverState *chr = opaque;
771 FDCharDriver *s = chr->opaque;
773 uint8_t buf[READ_BUF_LEN];
778 if (len > s->max_size) {
785 status = g_io_channel_read_chars(chan, (gchar *)buf,
786 len, &bytes_read, NULL);
787 if (status == G_IO_STATUS_EOF) {
789 io_remove_watch_poll(s->fd_in_tag);
792 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
795 if (status == G_IO_STATUS_NORMAL) {
796 qemu_chr_be_write(chr, buf, bytes_read);
802 static int fd_chr_read_poll(void *opaque)
804 CharDriverState *chr = opaque;
805 FDCharDriver *s = chr->opaque;
807 s->max_size = qemu_chr_be_can_write(chr);
811 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
813 FDCharDriver *s = chr->opaque;
814 return g_io_create_watch(s->fd_out, cond);
817 static void fd_chr_update_read_handler(CharDriverState *chr)
819 FDCharDriver *s = chr->opaque;
822 io_remove_watch_poll(s->fd_in_tag);
827 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
831 static void fd_chr_close(struct CharDriverState *chr)
833 FDCharDriver *s = chr->opaque;
836 io_remove_watch_poll(s->fd_in_tag);
841 g_io_channel_unref(s->fd_in);
844 g_io_channel_unref(s->fd_out);
848 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
851 /* open a character device to a unix fd */
852 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
854 CharDriverState *chr;
857 chr = g_malloc0(sizeof(CharDriverState));
858 s = g_malloc0(sizeof(FDCharDriver));
859 s->fd_in = io_channel_from_fd(fd_in);
860 s->fd_out = io_channel_from_fd(fd_out);
861 fcntl(fd_out, F_SETFL, O_NONBLOCK);
864 chr->chr_add_watch = fd_chr_add_watch;
865 chr->chr_write = fd_chr_write;
866 chr->chr_update_read_handler = fd_chr_update_read_handler;
867 chr->chr_close = fd_chr_close;
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 (!stdio_allow_signal)
927 tty.c_lflag &= ~ISIG;
929 tcsetattr (0, TCSANOW, &tty);
932 static void qemu_chr_close_stdio(struct CharDriverState *chr)
938 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
940 CharDriverState *chr;
942 if (is_daemonized()) {
943 error_report("cannot use stdio with -daemonize");
946 old_fd0_flags = fcntl(0, F_GETFL);
947 tcgetattr (0, &oldtty);
948 fcntl(0, F_SETFL, O_NONBLOCK);
951 chr = qemu_chr_open_fd(0, 1);
952 chr->chr_close = qemu_chr_close_stdio;
953 chr->chr_set_echo = qemu_chr_set_echo_stdio;
954 if (opts->has_signal) {
955 stdio_allow_signal = opts->signal;
957 qemu_chr_fe_set_echo(chr, false);
962 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
963 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
964 || defined(__GLIBC__)
966 #define HAVE_CHARDEV_TTY 1
976 static void pty_chr_update_read_handler(CharDriverState *chr);
977 static void pty_chr_state(CharDriverState *chr, int connected);
979 static gboolean pty_chr_timer(gpointer opaque)
981 struct CharDriverState *chr = opaque;
982 PtyCharDriver *s = chr->opaque;
989 pty_chr_update_read_handler(chr);
996 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
998 PtyCharDriver *s = chr->opaque;
1001 g_source_remove(s->timer_tag);
1006 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1008 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1012 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1014 PtyCharDriver *s = chr->opaque;
1016 if (!s->connected) {
1017 /* guest sends data, check for (re-)connect */
1018 pty_chr_update_read_handler(chr);
1021 return io_channel_send(s->fd, buf, len);
1024 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1026 PtyCharDriver *s = chr->opaque;
1027 return g_io_create_watch(s->fd, cond);
1030 static int pty_chr_read_poll(void *opaque)
1032 CharDriverState *chr = opaque;
1033 PtyCharDriver *s = chr->opaque;
1035 s->read_bytes = qemu_chr_be_can_write(chr);
1036 return s->read_bytes;
1039 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1041 CharDriverState *chr = opaque;
1042 PtyCharDriver *s = chr->opaque;
1044 uint8_t buf[READ_BUF_LEN];
1048 if (len > s->read_bytes)
1049 len = s->read_bytes;
1053 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1054 if (status != G_IO_STATUS_NORMAL) {
1055 pty_chr_state(chr, 0);
1058 pty_chr_state(chr, 1);
1059 qemu_chr_be_write(chr, buf, size);
1064 static void pty_chr_update_read_handler(CharDriverState *chr)
1066 PtyCharDriver *s = chr->opaque;
1069 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1070 pfd.events = G_IO_OUT;
1073 if (pfd.revents & G_IO_HUP) {
1074 pty_chr_state(chr, 0);
1076 pty_chr_state(chr, 1);
1080 static void pty_chr_state(CharDriverState *chr, int connected)
1082 PtyCharDriver *s = chr->opaque;
1086 io_remove_watch_poll(s->fd_tag);
1090 /* (re-)connect poll interval for idle guests: once per second.
1091 * We check more frequently in case the guests sends data to
1092 * the virtual device linked to our pty. */
1093 pty_chr_rearm_timer(chr, 1000);
1096 g_source_remove(s->timer_tag);
1099 if (!s->connected) {
1100 qemu_chr_be_generic_open(chr);
1102 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1108 static void pty_chr_close(struct CharDriverState *chr)
1110 PtyCharDriver *s = chr->opaque;
1114 io_remove_watch_poll(s->fd_tag);
1117 fd = g_io_channel_unix_get_fd(s->fd);
1118 g_io_channel_unref(s->fd);
1121 g_source_remove(s->timer_tag);
1125 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1128 static CharDriverState *qemu_chr_open_pty(const char *id,
1131 CharDriverState *chr;
1133 int master_fd, slave_fd;
1134 char pty_name[PATH_MAX];
1136 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1137 if (master_fd < 0) {
1143 chr = g_malloc0(sizeof(CharDriverState));
1145 chr->filename = g_strdup_printf("pty:%s", pty_name);
1146 ret->pty = g_strdup(pty_name);
1147 ret->has_pty = true;
1149 fprintf(stderr, "char device redirected to %s (label %s)\n",
1152 s = g_malloc0(sizeof(PtyCharDriver));
1154 chr->chr_write = pty_chr_write;
1155 chr->chr_update_read_handler = pty_chr_update_read_handler;
1156 chr->chr_close = pty_chr_close;
1157 chr->chr_add_watch = pty_chr_add_watch;
1158 chr->explicit_be_open = true;
1160 s->fd = io_channel_from_fd(master_fd);
1166 static void tty_serial_init(int fd, int speed,
1167 int parity, int data_bits, int stop_bits)
1173 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1174 speed, parity, data_bits, stop_bits);
1176 tcgetattr (fd, &tty);
1178 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1179 speed = speed * 10 / 11;
1196 /* Non-Posix values follow. They may be unsupported on some systems. */
1198 check_speed(115200);
1200 check_speed(230400);
1203 check_speed(460800);
1206 check_speed(500000);
1209 check_speed(576000);
1212 check_speed(921600);
1215 check_speed(1000000);
1218 check_speed(1152000);
1221 check_speed(1500000);
1224 check_speed(2000000);
1227 check_speed(2500000);
1230 check_speed(3000000);
1233 check_speed(3500000);
1236 check_speed(4000000);
1241 cfsetispeed(&tty, spd);
1242 cfsetospeed(&tty, spd);
1244 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1245 |INLCR|IGNCR|ICRNL|IXON);
1246 tty.c_oflag |= OPOST;
1247 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1248 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1269 tty.c_cflag |= PARENB;
1272 tty.c_cflag |= PARENB | PARODD;
1276 tty.c_cflag |= CSTOPB;
1278 tcsetattr (fd, TCSANOW, &tty);
1281 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1283 FDCharDriver *s = chr->opaque;
1286 case CHR_IOCTL_SERIAL_SET_PARAMS:
1288 QEMUSerialSetParams *ssp = arg;
1289 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1290 ssp->speed, ssp->parity,
1291 ssp->data_bits, ssp->stop_bits);
1294 case CHR_IOCTL_SERIAL_SET_BREAK:
1296 int enable = *(int *)arg;
1298 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1302 case CHR_IOCTL_SERIAL_GET_TIOCM:
1305 int *targ = (int *)arg;
1306 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1308 if (sarg & TIOCM_CTS)
1309 *targ |= CHR_TIOCM_CTS;
1310 if (sarg & TIOCM_CAR)
1311 *targ |= CHR_TIOCM_CAR;
1312 if (sarg & TIOCM_DSR)
1313 *targ |= CHR_TIOCM_DSR;
1314 if (sarg & TIOCM_RI)
1315 *targ |= CHR_TIOCM_RI;
1316 if (sarg & TIOCM_DTR)
1317 *targ |= CHR_TIOCM_DTR;
1318 if (sarg & TIOCM_RTS)
1319 *targ |= CHR_TIOCM_RTS;
1322 case CHR_IOCTL_SERIAL_SET_TIOCM:
1324 int sarg = *(int *)arg;
1326 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1327 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1328 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1329 if (sarg & CHR_TIOCM_CTS)
1331 if (sarg & CHR_TIOCM_CAR)
1333 if (sarg & CHR_TIOCM_DSR)
1335 if (sarg & CHR_TIOCM_RI)
1337 if (sarg & CHR_TIOCM_DTR)
1339 if (sarg & CHR_TIOCM_RTS)
1341 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1350 static void qemu_chr_close_tty(CharDriverState *chr)
1352 FDCharDriver *s = chr->opaque;
1356 fd = g_io_channel_unix_get_fd(s->fd_in);
1366 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1368 CharDriverState *chr;
1370 tty_serial_init(fd, 115200, 'N', 8, 1);
1371 chr = qemu_chr_open_fd(fd, fd);
1372 chr->chr_ioctl = tty_serial_ioctl;
1373 chr->chr_close = qemu_chr_close_tty;
1376 #endif /* __linux__ || __sun__ */
1378 #if defined(__linux__)
1380 #define HAVE_CHARDEV_PARPORT 1
1385 } ParallelCharDriver;
1387 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1389 if (s->mode != mode) {
1391 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1398 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1400 ParallelCharDriver *drv = chr->opaque;
1405 case CHR_IOCTL_PP_READ_DATA:
1406 if (ioctl(fd, PPRDATA, &b) < 0)
1408 *(uint8_t *)arg = b;
1410 case CHR_IOCTL_PP_WRITE_DATA:
1411 b = *(uint8_t *)arg;
1412 if (ioctl(fd, PPWDATA, &b) < 0)
1415 case CHR_IOCTL_PP_READ_CONTROL:
1416 if (ioctl(fd, PPRCONTROL, &b) < 0)
1418 /* Linux gives only the lowest bits, and no way to know data
1419 direction! For better compatibility set the fixed upper
1421 *(uint8_t *)arg = b | 0xc0;
1423 case CHR_IOCTL_PP_WRITE_CONTROL:
1424 b = *(uint8_t *)arg;
1425 if (ioctl(fd, PPWCONTROL, &b) < 0)
1428 case CHR_IOCTL_PP_READ_STATUS:
1429 if (ioctl(fd, PPRSTATUS, &b) < 0)
1431 *(uint8_t *)arg = b;
1433 case CHR_IOCTL_PP_DATA_DIR:
1434 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1437 case CHR_IOCTL_PP_EPP_READ_ADDR:
1438 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1439 struct ParallelIOArg *parg = arg;
1440 int n = read(fd, parg->buffer, parg->count);
1441 if (n != parg->count) {
1446 case CHR_IOCTL_PP_EPP_READ:
1447 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1448 struct ParallelIOArg *parg = arg;
1449 int n = read(fd, parg->buffer, parg->count);
1450 if (n != parg->count) {
1455 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1456 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1457 struct ParallelIOArg *parg = arg;
1458 int n = write(fd, parg->buffer, parg->count);
1459 if (n != parg->count) {
1464 case CHR_IOCTL_PP_EPP_WRITE:
1465 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1466 struct ParallelIOArg *parg = arg;
1467 int n = write(fd, parg->buffer, parg->count);
1468 if (n != parg->count) {
1479 static void pp_close(CharDriverState *chr)
1481 ParallelCharDriver *drv = chr->opaque;
1484 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1485 ioctl(fd, PPRELEASE);
1488 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1491 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1493 CharDriverState *chr;
1494 ParallelCharDriver *drv;
1496 if (ioctl(fd, PPCLAIM) < 0) {
1501 drv = g_malloc0(sizeof(ParallelCharDriver));
1503 drv->mode = IEEE1284_MODE_COMPAT;
1505 chr = g_malloc0(sizeof(CharDriverState));
1506 chr->chr_write = null_chr_write;
1507 chr->chr_ioctl = pp_ioctl;
1508 chr->chr_close = pp_close;
1513 #endif /* __linux__ */
1515 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1517 #define HAVE_CHARDEV_PARPORT 1
1519 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1521 int fd = (int)(intptr_t)chr->opaque;
1525 case CHR_IOCTL_PP_READ_DATA:
1526 if (ioctl(fd, PPIGDATA, &b) < 0)
1528 *(uint8_t *)arg = b;
1530 case CHR_IOCTL_PP_WRITE_DATA:
1531 b = *(uint8_t *)arg;
1532 if (ioctl(fd, PPISDATA, &b) < 0)
1535 case CHR_IOCTL_PP_READ_CONTROL:
1536 if (ioctl(fd, PPIGCTRL, &b) < 0)
1538 *(uint8_t *)arg = b;
1540 case CHR_IOCTL_PP_WRITE_CONTROL:
1541 b = *(uint8_t *)arg;
1542 if (ioctl(fd, PPISCTRL, &b) < 0)
1545 case CHR_IOCTL_PP_READ_STATUS:
1546 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1548 *(uint8_t *)arg = b;
1556 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1558 CharDriverState *chr;
1560 chr = g_malloc0(sizeof(CharDriverState));
1561 chr->opaque = (void *)(intptr_t)fd;
1562 chr->chr_write = null_chr_write;
1563 chr->chr_ioctl = pp_ioctl;
1564 chr->explicit_be_open = true;
1573 HANDLE hcom, hrecv, hsend;
1574 OVERLAPPED orecv, osend;
1581 HANDLE hInputReadyEvent;
1582 HANDLE hInputDoneEvent;
1583 HANDLE hInputThread;
1584 uint8_t win_stdio_buf;
1585 } WinStdioCharState;
1587 #define NSENDBUF 2048
1588 #define NRECVBUF 2048
1589 #define MAXCONNECT 1
1590 #define NTIMEOUT 5000
1592 static int win_chr_poll(void *opaque);
1593 static int win_chr_pipe_poll(void *opaque);
1595 static void win_chr_close(CharDriverState *chr)
1597 WinCharState *s = chr->opaque;
1600 CloseHandle(s->hsend);
1604 CloseHandle(s->hrecv);
1608 CloseHandle(s->hcom);
1612 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1614 qemu_del_polling_cb(win_chr_poll, chr);
1616 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1619 static int win_chr_init(CharDriverState *chr, const char *filename)
1621 WinCharState *s = chr->opaque;
1623 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1628 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1630 fprintf(stderr, "Failed CreateEvent\n");
1633 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1635 fprintf(stderr, "Failed CreateEvent\n");
1639 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1640 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1641 if (s->hcom == INVALID_HANDLE_VALUE) {
1642 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1647 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1648 fprintf(stderr, "Failed SetupComm\n");
1652 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1653 size = sizeof(COMMCONFIG);
1654 GetDefaultCommConfig(filename, &comcfg, &size);
1655 comcfg.dcb.DCBlength = sizeof(DCB);
1656 CommConfigDialog(filename, NULL, &comcfg);
1658 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1659 fprintf(stderr, "Failed SetCommState\n");
1663 if (!SetCommMask(s->hcom, EV_ERR)) {
1664 fprintf(stderr, "Failed SetCommMask\n");
1668 cto.ReadIntervalTimeout = MAXDWORD;
1669 if (!SetCommTimeouts(s->hcom, &cto)) {
1670 fprintf(stderr, "Failed SetCommTimeouts\n");
1674 if (!ClearCommError(s->hcom, &err, &comstat)) {
1675 fprintf(stderr, "Failed ClearCommError\n");
1678 qemu_add_polling_cb(win_chr_poll, chr);
1686 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1688 WinCharState *s = chr->opaque;
1689 DWORD len, ret, size, err;
1692 ZeroMemory(&s->osend, sizeof(s->osend));
1693 s->osend.hEvent = s->hsend;
1696 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1698 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1700 err = GetLastError();
1701 if (err == ERROR_IO_PENDING) {
1702 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1720 static int win_chr_read_poll(CharDriverState *chr)
1722 WinCharState *s = chr->opaque;
1724 s->max_size = qemu_chr_be_can_write(chr);
1728 static void win_chr_readfile(CharDriverState *chr)
1730 WinCharState *s = chr->opaque;
1732 uint8_t buf[READ_BUF_LEN];
1735 ZeroMemory(&s->orecv, sizeof(s->orecv));
1736 s->orecv.hEvent = s->hrecv;
1737 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1739 err = GetLastError();
1740 if (err == ERROR_IO_PENDING) {
1741 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1746 qemu_chr_be_write(chr, buf, size);
1750 static void win_chr_read(CharDriverState *chr)
1752 WinCharState *s = chr->opaque;
1754 if (s->len > s->max_size)
1755 s->len = s->max_size;
1759 win_chr_readfile(chr);
1762 static int win_chr_poll(void *opaque)
1764 CharDriverState *chr = opaque;
1765 WinCharState *s = chr->opaque;
1769 ClearCommError(s->hcom, &comerr, &status);
1770 if (status.cbInQue > 0) {
1771 s->len = status.cbInQue;
1772 win_chr_read_poll(chr);
1779 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1781 CharDriverState *chr;
1784 chr = g_malloc0(sizeof(CharDriverState));
1785 s = g_malloc0(sizeof(WinCharState));
1787 chr->chr_write = win_chr_write;
1788 chr->chr_close = win_chr_close;
1790 if (win_chr_init(chr, filename) < 0) {
1798 static int win_chr_pipe_poll(void *opaque)
1800 CharDriverState *chr = opaque;
1801 WinCharState *s = chr->opaque;
1804 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1807 win_chr_read_poll(chr);
1814 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1816 WinCharState *s = chr->opaque;
1824 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1826 fprintf(stderr, "Failed CreateEvent\n");
1829 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1831 fprintf(stderr, "Failed CreateEvent\n");
1835 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1836 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1837 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1839 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1840 if (s->hcom == INVALID_HANDLE_VALUE) {
1841 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1846 ZeroMemory(&ov, sizeof(ov));
1847 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1848 ret = ConnectNamedPipe(s->hcom, &ov);
1850 fprintf(stderr, "Failed ConnectNamedPipe\n");
1854 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1856 fprintf(stderr, "Failed GetOverlappedResult\n");
1858 CloseHandle(ov.hEvent);
1865 CloseHandle(ov.hEvent);
1868 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1877 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1879 const char *filename = opts->device;
1880 CharDriverState *chr;
1883 chr = g_malloc0(sizeof(CharDriverState));
1884 s = g_malloc0(sizeof(WinCharState));
1886 chr->chr_write = win_chr_write;
1887 chr->chr_close = win_chr_close;
1889 if (win_chr_pipe_init(chr, filename) < 0) {
1897 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1899 CharDriverState *chr;
1902 chr = g_malloc0(sizeof(CharDriverState));
1903 s = g_malloc0(sizeof(WinCharState));
1906 chr->chr_write = win_chr_write;
1910 static CharDriverState *qemu_chr_open_win_con(void)
1912 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1915 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1917 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1924 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1934 static void win_stdio_wait_func(void *opaque)
1936 CharDriverState *chr = opaque;
1937 WinStdioCharState *stdio = chr->opaque;
1938 INPUT_RECORD buf[4];
1943 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1947 /* Avoid error storm */
1948 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1952 for (i = 0; i < dwSize; i++) {
1953 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
1955 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
1957 if (kev->uChar.AsciiChar != 0) {
1958 for (j = 0; j < kev->wRepeatCount; j++) {
1959 if (qemu_chr_be_can_write(chr)) {
1960 uint8_t c = kev->uChar.AsciiChar;
1961 qemu_chr_be_write(chr, &c, 1);
1969 static DWORD WINAPI win_stdio_thread(LPVOID param)
1971 CharDriverState *chr = param;
1972 WinStdioCharState *stdio = chr->opaque;
1978 /* Wait for one byte */
1979 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
1981 /* Exit in case of error, continue if nothing read */
1989 /* Some terminal emulator returns \r\n for Enter, just pass \n */
1990 if (stdio->win_stdio_buf == '\r') {
1994 /* Signal the main thread and wait until the byte was eaten */
1995 if (!SetEvent(stdio->hInputReadyEvent)) {
1998 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2004 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2008 static void win_stdio_thread_wait_func(void *opaque)
2010 CharDriverState *chr = opaque;
2011 WinStdioCharState *stdio = chr->opaque;
2013 if (qemu_chr_be_can_write(chr)) {
2014 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2017 SetEvent(stdio->hInputDoneEvent);
2020 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2022 WinStdioCharState *stdio = chr->opaque;
2025 GetConsoleMode(stdio->hStdIn, &dwMode);
2028 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2030 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2034 static void win_stdio_close(CharDriverState *chr)
2036 WinStdioCharState *stdio = chr->opaque;
2038 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2039 CloseHandle(stdio->hInputReadyEvent);
2041 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2042 CloseHandle(stdio->hInputDoneEvent);
2044 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2045 TerminateThread(stdio->hInputThread, 0);
2048 g_free(chr->opaque);
2052 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2054 CharDriverState *chr;
2055 WinStdioCharState *stdio;
2059 chr = g_malloc0(sizeof(CharDriverState));
2060 stdio = g_malloc0(sizeof(WinStdioCharState));
2062 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2063 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2064 fprintf(stderr, "cannot open stdio: invalid handle\n");
2068 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2070 chr->opaque = stdio;
2071 chr->chr_write = win_stdio_write;
2072 chr->chr_close = win_stdio_close;
2075 if (qemu_add_wait_object(stdio->hStdIn,
2076 win_stdio_wait_func, chr)) {
2077 fprintf(stderr, "qemu_add_wait_object: failed\n");
2082 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2083 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2084 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2087 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2088 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2089 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2090 fprintf(stderr, "cannot create stdio thread or event\n");
2093 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2094 win_stdio_thread_wait_func, chr)) {
2095 fprintf(stderr, "qemu_add_wait_object: failed\n");
2099 dwMode |= ENABLE_LINE_INPUT;
2102 /* set the terminal in raw mode */
2103 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2104 dwMode |= ENABLE_PROCESSED_INPUT;
2107 SetConsoleMode(stdio->hStdIn, dwMode);
2109 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2110 qemu_chr_fe_set_echo(chr, false);
2114 #endif /* !_WIN32 */
2117 /***********************************************************/
2118 /* UDP Net console */
2124 uint8_t buf[READ_BUF_LEN];
2130 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2132 NetCharDriver *s = chr->opaque;
2133 gsize bytes_written;
2136 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2137 if (status == G_IO_STATUS_EOF) {
2139 } else if (status != G_IO_STATUS_NORMAL) {
2143 return bytes_written;
2146 static int udp_chr_read_poll(void *opaque)
2148 CharDriverState *chr = opaque;
2149 NetCharDriver *s = chr->opaque;
2151 s->max_size = qemu_chr_be_can_write(chr);
2153 /* If there were any stray characters in the queue process them
2156 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2157 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2159 s->max_size = qemu_chr_be_can_write(chr);
2164 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2166 CharDriverState *chr = opaque;
2167 NetCharDriver *s = chr->opaque;
2168 gsize bytes_read = 0;
2171 if (s->max_size == 0) {
2174 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2176 s->bufcnt = bytes_read;
2177 s->bufptr = s->bufcnt;
2178 if (status != G_IO_STATUS_NORMAL) {
2180 io_remove_watch_poll(s->tag);
2187 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2188 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2190 s->max_size = qemu_chr_be_can_write(chr);
2196 static void udp_chr_update_read_handler(CharDriverState *chr)
2198 NetCharDriver *s = chr->opaque;
2201 io_remove_watch_poll(s->tag);
2206 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2210 static void udp_chr_close(CharDriverState *chr)
2212 NetCharDriver *s = chr->opaque;
2214 io_remove_watch_poll(s->tag);
2218 g_io_channel_unref(s->chan);
2222 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2225 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2227 CharDriverState *chr = NULL;
2228 NetCharDriver *s = NULL;
2230 chr = g_malloc0(sizeof(CharDriverState));
2231 s = g_malloc0(sizeof(NetCharDriver));
2234 s->chan = io_channel_from_socket(s->fd);
2238 chr->chr_write = udp_chr_write;
2239 chr->chr_update_read_handler = udp_chr_update_read_handler;
2240 chr->chr_close = udp_chr_close;
2241 /* be isn't opened until we get a connection */
2242 chr->explicit_be_open = true;
2246 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2248 Error *local_err = NULL;
2251 fd = inet_dgram_opts(opts, &local_err);
2253 qerror_report_err(local_err);
2254 error_free(local_err);
2257 return qemu_chr_open_udp_fd(fd);
2260 /***********************************************************/
2261 /* TCP Net console */
2265 GIOChannel *chan, *listen_chan;
2266 guint tag, listen_tag;
2276 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2278 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2280 TCPCharDriver *s = chr->opaque;
2282 return io_channel_send(s->chan, buf, len);
2284 /* XXX: indicate an error ? */
2289 static int tcp_chr_read_poll(void *opaque)
2291 CharDriverState *chr = opaque;
2292 TCPCharDriver *s = chr->opaque;
2295 s->max_size = qemu_chr_be_can_write(chr);
2300 #define IAC_BREAK 243
2301 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2303 uint8_t *buf, int *size)
2305 /* Handle any telnet client's basic IAC options to satisfy char by
2306 * char mode with no echo. All IAC options will be removed from
2307 * the buf and the do_telnetopt variable will be used to track the
2308 * state of the width of the IAC information.
2310 * IAC commands come in sets of 3 bytes with the exception of the
2311 * "IAC BREAK" command and the double IAC.
2317 for (i = 0; i < *size; i++) {
2318 if (s->do_telnetopt > 1) {
2319 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2320 /* Double IAC means send an IAC */
2324 s->do_telnetopt = 1;
2326 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2327 /* Handle IAC break commands by sending a serial break */
2328 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2333 if (s->do_telnetopt >= 4) {
2334 s->do_telnetopt = 1;
2337 if ((unsigned char)buf[i] == IAC) {
2338 s->do_telnetopt = 2;
2349 static int tcp_get_msgfd(CharDriverState *chr)
2351 TCPCharDriver *s = chr->opaque;
2358 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2360 TCPCharDriver *s = chr->opaque;
2361 struct cmsghdr *cmsg;
2363 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2366 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2367 cmsg->cmsg_level != SOL_SOCKET ||
2368 cmsg->cmsg_type != SCM_RIGHTS)
2371 fd = *((int *)CMSG_DATA(cmsg));
2375 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2378 #ifndef MSG_CMSG_CLOEXEC
2379 qemu_set_cloexec(fd);
2387 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2389 TCPCharDriver *s = chr->opaque;
2390 struct msghdr msg = { NULL, };
2391 struct iovec iov[1];
2393 struct cmsghdr cmsg;
2394 char control[CMSG_SPACE(sizeof(int))];
2399 iov[0].iov_base = buf;
2400 iov[0].iov_len = len;
2404 msg.msg_control = &msg_control;
2405 msg.msg_controllen = sizeof(msg_control);
2407 #ifdef MSG_CMSG_CLOEXEC
2408 flags |= MSG_CMSG_CLOEXEC;
2410 ret = recvmsg(s->fd, &msg, flags);
2411 if (ret > 0 && s->is_unix) {
2412 unix_process_msgfd(chr, &msg);
2418 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2420 TCPCharDriver *s = chr->opaque;
2421 return qemu_recv(s->fd, buf, len, 0);
2425 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2427 TCPCharDriver *s = chr->opaque;
2428 return g_io_create_watch(s->chan, cond);
2431 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2433 CharDriverState *chr = opaque;
2434 TCPCharDriver *s = chr->opaque;
2435 uint8_t buf[READ_BUF_LEN];
2438 if (!s->connected || s->max_size <= 0) {
2442 if (len > s->max_size)
2444 size = tcp_chr_recv(chr, (void *)buf, len);
2446 /* connection closed */
2448 if (s->listen_chan) {
2449 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2452 io_remove_watch_poll(s->tag);
2455 g_io_channel_unref(s->chan);
2459 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2460 } else if (size > 0) {
2461 if (s->do_telnetopt)
2462 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2464 qemu_chr_be_write(chr, buf, size);
2471 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2473 return qemu_chr_open_fd(eventfd, eventfd);
2477 static void tcp_chr_connect(void *opaque)
2479 CharDriverState *chr = opaque;
2480 TCPCharDriver *s = chr->opaque;
2484 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2486 qemu_chr_be_generic_open(chr);
2489 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2490 static void tcp_chr_telnet_init(int fd)
2493 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2494 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2495 send(fd, (char *)buf, 3, 0);
2496 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2497 send(fd, (char *)buf, 3, 0);
2498 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2499 send(fd, (char *)buf, 3, 0);
2500 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2501 send(fd, (char *)buf, 3, 0);
2504 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2506 TCPCharDriver *s = chr->opaque;
2510 qemu_set_nonblock(fd);
2512 socket_set_nodelay(fd);
2514 s->chan = io_channel_from_socket(fd);
2515 if (s->listen_tag) {
2516 g_source_remove(s->listen_tag);
2519 tcp_chr_connect(chr);
2524 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2526 CharDriverState *chr = opaque;
2527 TCPCharDriver *s = chr->opaque;
2528 struct sockaddr_in saddr;
2530 struct sockaddr_un uaddr;
2532 struct sockaddr *addr;
2539 len = sizeof(uaddr);
2540 addr = (struct sockaddr *)&uaddr;
2544 len = sizeof(saddr);
2545 addr = (struct sockaddr *)&saddr;
2547 fd = qemu_accept(s->listen_fd, addr, &len);
2548 if (fd < 0 && errno != EINTR) {
2551 } else if (fd >= 0) {
2552 if (s->do_telnetopt)
2553 tcp_chr_telnet_init(fd);
2557 if (tcp_chr_add_client(chr, fd) < 0)
2563 static void tcp_chr_close(CharDriverState *chr)
2565 TCPCharDriver *s = chr->opaque;
2568 io_remove_watch_poll(s->tag);
2572 g_io_channel_unref(s->chan);
2576 if (s->listen_fd >= 0) {
2577 if (s->listen_tag) {
2578 g_source_remove(s->listen_tag);
2581 if (s->listen_chan) {
2582 g_io_channel_unref(s->listen_chan);
2584 closesocket(s->listen_fd);
2587 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2590 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2591 bool is_listen, bool is_telnet,
2592 bool is_waitconnect,
2595 CharDriverState *chr = NULL;
2596 TCPCharDriver *s = NULL;
2597 char host[NI_MAXHOST], serv[NI_MAXSERV];
2598 const char *left = "", *right = "";
2599 struct sockaddr_storage ss;
2600 socklen_t ss_len = sizeof(ss);
2602 memset(&ss, 0, ss_len);
2603 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2604 error_setg_errno(errp, errno, "getsockname");
2608 chr = g_malloc0(sizeof(CharDriverState));
2609 s = g_malloc0(sizeof(TCPCharDriver));
2616 chr->filename = g_malloc(256);
2617 switch (ss.ss_family) {
2621 snprintf(chr->filename, 256, "unix:%s%s",
2622 ((struct sockaddr_un *)(&ss))->sun_path,
2623 is_listen ? ",server" : "");
2631 s->do_nodelay = do_nodelay;
2632 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2633 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2634 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2635 is_telnet ? "telnet" : "tcp",
2636 left, host, right, serv,
2637 is_listen ? ",server" : "");
2642 chr->chr_write = tcp_chr_write;
2643 chr->chr_close = tcp_chr_close;
2644 chr->get_msgfd = tcp_get_msgfd;
2645 chr->chr_add_client = tcp_chr_add_client;
2646 chr->chr_add_watch = tcp_chr_add_watch;
2647 /* be isn't opened until we get a connection */
2648 chr->explicit_be_open = true;
2652 s->listen_chan = io_channel_from_socket(s->listen_fd);
2653 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2655 s->do_telnetopt = 1;
2660 socket_set_nodelay(fd);
2661 s->chan = io_channel_from_socket(s->fd);
2662 tcp_chr_connect(chr);
2665 if (is_listen && is_waitconnect) {
2666 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2668 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2669 qemu_set_nonblock(s->listen_fd);
2674 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2676 CharDriverState *chr = NULL;
2677 Error *local_err = NULL;
2680 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2681 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2682 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2683 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2684 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2688 fd = unix_listen_opts(opts, &local_err);
2690 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2694 fd = inet_listen_opts(opts, 0, &local_err);
2696 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2703 if (!is_waitconnect)
2704 qemu_set_nonblock(fd);
2706 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2707 is_waitconnect, &local_err);
2708 if (error_is_set(&local_err)) {
2716 qerror_report_err(local_err);
2717 error_free(local_err);
2723 g_free(chr->opaque);
2729 /*********************************************************/
2730 /* Ring buffer chardev */
2737 } RingBufCharDriver;
2739 static size_t ringbuf_count(const CharDriverState *chr)
2741 const RingBufCharDriver *d = chr->opaque;
2743 return d->prod - d->cons;
2746 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2748 RingBufCharDriver *d = chr->opaque;
2751 if (!buf || (len < 0)) {
2755 for (i = 0; i < len; i++ ) {
2756 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2757 if (d->prod - d->cons > d->size) {
2758 d->cons = d->prod - d->size;
2765 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2767 RingBufCharDriver *d = chr->opaque;
2770 for (i = 0; i < len && d->cons != d->prod; i++) {
2771 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2777 static void ringbuf_chr_close(struct CharDriverState *chr)
2779 RingBufCharDriver *d = chr->opaque;
2786 static CharDriverState *qemu_chr_open_memory(ChardevMemory *opts,
2789 CharDriverState *chr;
2790 RingBufCharDriver *d;
2792 chr = g_malloc0(sizeof(CharDriverState));
2793 d = g_malloc(sizeof(*d));
2795 d->size = opts->has_size ? opts->size : 65536;
2797 /* The size must be power of 2 */
2798 if (d->size & (d->size - 1)) {
2799 error_setg(errp, "size of memory chardev must be power of two");
2805 d->cbuf = g_malloc0(d->size);
2808 chr->chr_write = ringbuf_chr_write;
2809 chr->chr_close = ringbuf_chr_close;
2819 static bool chr_is_ringbuf(const CharDriverState *chr)
2821 return chr->chr_write == ringbuf_chr_write;
2824 void qmp_ringbuf_write(const char *device, const char *data,
2825 bool has_format, enum DataFormat format,
2828 CharDriverState *chr;
2829 const uint8_t *write_data;
2833 chr = qemu_chr_find(device);
2835 error_setg(errp, "Device '%s' not found", device);
2839 if (!chr_is_ringbuf(chr)) {
2840 error_setg(errp,"%s is not a ringbuf device", device);
2844 if (has_format && (format == DATA_FORMAT_BASE64)) {
2845 write_data = g_base64_decode(data, &write_count);
2847 write_data = (uint8_t *)data;
2848 write_count = strlen(data);
2851 ret = ringbuf_chr_write(chr, write_data, write_count);
2853 if (write_data != (uint8_t *)data) {
2854 g_free((void *)write_data);
2858 error_setg(errp, "Failed to write to device %s", device);
2863 char *qmp_ringbuf_read(const char *device, int64_t size,
2864 bool has_format, enum DataFormat format,
2867 CharDriverState *chr;
2872 chr = qemu_chr_find(device);
2874 error_setg(errp, "Device '%s' not found", device);
2878 if (!chr_is_ringbuf(chr)) {
2879 error_setg(errp,"%s is not a ringbuf device", device);
2884 error_setg(errp, "size must be greater than zero");
2888 count = ringbuf_count(chr);
2889 size = size > count ? count : size;
2890 read_data = g_malloc(size + 1);
2892 ringbuf_chr_read(chr, read_data, size);
2894 if (has_format && (format == DATA_FORMAT_BASE64)) {
2895 data = g_base64_encode(read_data, size);
2899 * FIXME should read only complete, valid UTF-8 characters up
2900 * to @size bytes. Invalid sequences should be replaced by a
2901 * suitable replacement character. Except when (and only
2902 * when) ring buffer lost characters since last read, initial
2903 * continuation characters should be dropped.
2905 read_data[size] = 0;
2906 data = (char *)read_data;
2912 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2914 char host[65], port[33], width[8], height[8];
2918 Error *local_err = NULL;
2920 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2921 if (error_is_set(&local_err)) {
2922 qerror_report_err(local_err);
2923 error_free(local_err);
2927 if (strstart(filename, "mon:", &p)) {
2929 qemu_opt_set(opts, "mux", "on");
2930 if (strcmp(filename, "stdio") == 0) {
2931 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
2932 * but pass it to the guest. Handle this only for compat syntax,
2933 * for -chardev syntax we have special option for this.
2934 * This is what -nographic did, redirecting+muxing serial+monitor
2935 * to stdio causing Ctrl+C to be passed to guest. */
2936 qemu_opt_set(opts, "signal", "off");
2940 if (strcmp(filename, "null") == 0 ||
2941 strcmp(filename, "pty") == 0 ||
2942 strcmp(filename, "msmouse") == 0 ||
2943 strcmp(filename, "braille") == 0 ||
2944 strcmp(filename, "stdio") == 0) {
2945 qemu_opt_set(opts, "backend", filename);
2948 if (strstart(filename, "vc", &p)) {
2949 qemu_opt_set(opts, "backend", "vc");
2951 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2953 qemu_opt_set(opts, "width", width);
2954 qemu_opt_set(opts, "height", height);
2955 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2957 qemu_opt_set(opts, "cols", width);
2958 qemu_opt_set(opts, "rows", height);
2965 if (strcmp(filename, "con:") == 0) {
2966 qemu_opt_set(opts, "backend", "console");
2969 if (strstart(filename, "COM", NULL)) {
2970 qemu_opt_set(opts, "backend", "serial");
2971 qemu_opt_set(opts, "path", filename);
2974 if (strstart(filename, "file:", &p)) {
2975 qemu_opt_set(opts, "backend", "file");
2976 qemu_opt_set(opts, "path", p);
2979 if (strstart(filename, "pipe:", &p)) {
2980 qemu_opt_set(opts, "backend", "pipe");
2981 qemu_opt_set(opts, "path", p);
2984 if (strstart(filename, "tcp:", &p) ||
2985 strstart(filename, "telnet:", &p)) {
2986 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2988 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2991 qemu_opt_set(opts, "backend", "socket");
2992 qemu_opt_set(opts, "host", host);
2993 qemu_opt_set(opts, "port", port);
2994 if (p[pos] == ',') {
2995 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2998 if (strstart(filename, "telnet:", &p))
2999 qemu_opt_set(opts, "telnet", "on");
3002 if (strstart(filename, "udp:", &p)) {
3003 qemu_opt_set(opts, "backend", "udp");
3004 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3006 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3010 qemu_opt_set(opts, "host", host);
3011 qemu_opt_set(opts, "port", port);
3012 if (p[pos] == '@') {
3014 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3016 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3020 qemu_opt_set(opts, "localaddr", host);
3021 qemu_opt_set(opts, "localport", port);
3025 if (strstart(filename, "unix:", &p)) {
3026 qemu_opt_set(opts, "backend", "socket");
3027 if (qemu_opts_do_parse(opts, p, "path") != 0)
3031 if (strstart(filename, "/dev/parport", NULL) ||
3032 strstart(filename, "/dev/ppi", NULL)) {
3033 qemu_opt_set(opts, "backend", "parport");
3034 qemu_opt_set(opts, "path", filename);
3037 if (strstart(filename, "/dev/", NULL)) {
3038 qemu_opt_set(opts, "backend", "tty");
3039 qemu_opt_set(opts, "path", filename);
3044 qemu_opts_del(opts);
3048 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3051 const char *path = qemu_opt_get(opts, "path");
3054 error_setg(errp, "chardev: file: no filename given");
3057 backend->file = g_new0(ChardevFile, 1);
3058 backend->file->out = g_strdup(path);
3061 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3064 backend->stdio = g_new0(ChardevStdio, 1);
3065 backend->stdio->has_signal = true;
3066 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3069 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3072 const char *device = qemu_opt_get(opts, "path");
3074 if (device == NULL) {
3075 error_setg(errp, "chardev: serial/tty: no device path given");
3078 backend->serial = g_new0(ChardevHostdev, 1);
3079 backend->serial->device = g_strdup(device);
3082 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3085 const char *device = qemu_opt_get(opts, "path");
3087 if (device == NULL) {
3088 error_setg(errp, "chardev: parallel: no device path given");
3091 backend->parallel = g_new0(ChardevHostdev, 1);
3092 backend->parallel->device = g_strdup(device);
3095 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3098 const char *device = qemu_opt_get(opts, "path");
3100 if (device == NULL) {
3101 error_setg(errp, "chardev: pipe: no device path given");
3104 backend->pipe = g_new0(ChardevHostdev, 1);
3105 backend->pipe->device = g_strdup(device);
3108 static void qemu_chr_parse_memory(QemuOpts *opts, ChardevBackend *backend,
3113 backend->memory = g_new0(ChardevMemory, 1);
3115 val = qemu_opt_get_size(opts, "size", 0);
3117 backend->memory->has_size = true;
3118 backend->memory->size = val;
3122 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3125 const char *chardev = qemu_opt_get(opts, "chardev");
3127 if (chardev == NULL) {
3128 error_setg(errp, "chardev: mux: no chardev given");
3131 backend->mux = g_new0(ChardevMux, 1);
3132 backend->mux->chardev = g_strdup(chardev);
3135 typedef struct CharDriver {
3138 CharDriverState *(*open)(QemuOpts *opts);
3139 /* new, qapi-based */
3140 ChardevBackendKind kind;
3141 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3144 static GSList *backends;
3146 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3150 s = g_malloc0(sizeof(*s));
3151 s->name = g_strdup(name);
3154 backends = g_slist_append(backends, s);
3157 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3158 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3162 s = g_malloc0(sizeof(*s));
3163 s->name = g_strdup(name);
3167 backends = g_slist_append(backends, s);
3170 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3171 void (*init)(struct CharDriverState *s),
3175 CharDriverState *chr;
3178 if (qemu_opts_id(opts) == NULL) {
3179 error_setg(errp, "chardev: no id specified");
3183 if (qemu_opt_get(opts, "backend") == NULL) {
3184 error_setg(errp, "chardev: \"%s\" missing backend",
3185 qemu_opts_id(opts));
3188 for (i = backends; i; i = i->next) {
3191 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3196 error_setg(errp, "chardev: backend \"%s\" not found",
3197 qemu_opt_get(opts, "backend"));
3202 /* using new, qapi init */
3203 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3204 ChardevReturn *ret = NULL;
3205 const char *id = qemu_opts_id(opts);
3208 if (qemu_opt_get_bool(opts, "mux", 0)) {
3209 bid = g_strdup_printf("%s-base", id);
3213 backend->kind = cd->kind;
3215 cd->parse(opts, backend, errp);
3216 if (error_is_set(errp)) {
3220 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3221 if (error_is_set(errp)) {
3226 qapi_free_ChardevBackend(backend);
3227 qapi_free_ChardevReturn(ret);
3228 backend = g_new0(ChardevBackend, 1);
3229 backend->mux = g_new0(ChardevMux, 1);
3230 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3231 backend->mux->chardev = g_strdup(bid);
3232 ret = qmp_chardev_add(id, backend, errp);
3233 assert(!error_is_set(errp));
3236 chr = qemu_chr_find(id);
3240 qapi_free_ChardevBackend(backend);
3241 qapi_free_ChardevReturn(ret);
3246 chr = cd->open(opts);
3248 error_setg(errp, "chardev: opening backend \"%s\" failed",
3249 qemu_opt_get(opts, "backend"));
3254 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3256 /* if we didn't create the chardev via qmp_chardev_add, we
3257 * need to send the OPENED event here
3259 if (!chr->explicit_be_open) {
3260 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3262 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3264 if (qemu_opt_get_bool(opts, "mux", 0)) {
3265 CharDriverState *base = chr;
3266 int len = strlen(qemu_opts_id(opts)) + 6;
3267 base->label = g_malloc(len);
3268 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3269 chr = qemu_chr_open_mux(base);
3270 chr->filename = base->filename;
3271 chr->avail_connections = MAX_MUX;
3272 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3274 chr->avail_connections = 1;
3276 chr->label = g_strdup(qemu_opts_id(opts));
3281 qemu_opts_del(opts);
3285 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3288 CharDriverState *chr;
3292 if (strstart(filename, "chardev:", &p)) {
3293 return qemu_chr_find(p);
3296 opts = qemu_chr_parse_compat(label, filename);
3300 chr = qemu_chr_new_from_opts(opts, init, &err);
3301 if (error_is_set(&err)) {
3302 fprintf(stderr, "%s\n", error_get_pretty(err));
3305 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3306 qemu_chr_fe_claim_no_fail(chr);
3307 monitor_init(chr, MONITOR_USE_READLINE);
3312 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3314 if (chr->chr_set_echo) {
3315 chr->chr_set_echo(chr, echo);
3319 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3321 if (chr->fe_open == fe_open) {
3324 chr->fe_open = fe_open;
3325 if (chr->chr_set_fe_open) {
3326 chr->chr_set_fe_open(chr, fe_open);
3330 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3331 GIOFunc func, void *user_data)
3336 if (s->chr_add_watch == NULL) {
3340 src = s->chr_add_watch(s, cond);
3341 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3342 tag = g_source_attach(src, NULL);
3343 g_source_unref(src);
3348 int qemu_chr_fe_claim(CharDriverState *s)
3350 if (s->avail_connections < 1) {
3353 s->avail_connections--;
3357 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3359 if (qemu_chr_fe_claim(s) != 0) {
3360 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3361 __func__, s->label);
3366 void qemu_chr_fe_release(CharDriverState *s)
3368 s->avail_connections++;
3371 void qemu_chr_delete(CharDriverState *chr)
3373 QTAILQ_REMOVE(&chardevs, chr, next);
3374 if (chr->chr_close) {
3375 chr->chr_close(chr);
3377 g_free(chr->filename);
3380 qemu_opts_del(chr->opts);
3385 ChardevInfoList *qmp_query_chardev(Error **errp)
3387 ChardevInfoList *chr_list = NULL;
3388 CharDriverState *chr;
3390 QTAILQ_FOREACH(chr, &chardevs, next) {
3391 ChardevInfoList *info = g_malloc0(sizeof(*info));
3392 info->value = g_malloc0(sizeof(*info->value));
3393 info->value->label = g_strdup(chr->label);
3394 info->value->filename = g_strdup(chr->filename);
3396 info->next = chr_list;
3403 CharDriverState *qemu_chr_find(const char *name)
3405 CharDriverState *chr;
3407 QTAILQ_FOREACH(chr, &chardevs, next) {
3408 if (strcmp(chr->label, name) != 0)
3415 /* Get a character (serial) device interface. */
3416 CharDriverState *qemu_char_get_next_serial(void)
3418 static int next_serial;
3419 CharDriverState *chr;
3421 /* FIXME: This function needs to go away: use chardev properties! */
3423 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3424 chr = serial_hds[next_serial++];
3425 qemu_chr_fe_claim_no_fail(chr);
3431 QemuOptsList qemu_chardev_opts = {
3433 .implied_opt_name = "backend",
3434 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3438 .type = QEMU_OPT_STRING,
3441 .type = QEMU_OPT_STRING,
3444 .type = QEMU_OPT_STRING,
3447 .type = QEMU_OPT_STRING,
3449 .name = "localaddr",
3450 .type = QEMU_OPT_STRING,
3452 .name = "localport",
3453 .type = QEMU_OPT_STRING,
3456 .type = QEMU_OPT_NUMBER,
3459 .type = QEMU_OPT_BOOL,
3462 .type = QEMU_OPT_BOOL,
3465 .type = QEMU_OPT_BOOL,
3468 .type = QEMU_OPT_BOOL,
3471 .type = QEMU_OPT_BOOL,
3474 .type = QEMU_OPT_BOOL,
3477 .type = QEMU_OPT_NUMBER,
3480 .type = QEMU_OPT_NUMBER,
3483 .type = QEMU_OPT_NUMBER,
3486 .type = QEMU_OPT_NUMBER,
3489 .type = QEMU_OPT_BOOL,
3492 .type = QEMU_OPT_BOOL,
3495 .type = QEMU_OPT_STRING,
3498 .type = QEMU_OPT_NUMBER,
3501 .type = QEMU_OPT_SIZE,
3504 .type = QEMU_OPT_STRING,
3506 { /* end of list */ }
3512 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3517 error_setg(errp, "input file not supported");
3521 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3522 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3523 if (out == INVALID_HANDLE_VALUE) {
3524 error_setg(errp, "open %s failed", file->out);
3527 return qemu_chr_open_win_file(out);
3530 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3533 return qemu_chr_open_win_path(serial->device);
3536 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3539 error_setg(errp, "character device backend type 'parallel' not supported");
3545 static int qmp_chardev_open_file_source(char *src, int flags,
3550 TFR(fd = qemu_open(src, flags, 0666));
3552 error_setg_file_open(errp, errno, src);
3557 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3559 int flags, in = -1, out = -1;
3561 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3562 out = qmp_chardev_open_file_source(file->out, flags, errp);
3563 if (error_is_set(errp)) {
3569 in = qmp_chardev_open_file_source(file->in, flags, errp);
3570 if (error_is_set(errp)) {
3576 return qemu_chr_open_fd(in, out);
3579 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3582 #ifdef HAVE_CHARDEV_TTY
3585 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3586 if (error_is_set(errp)) {
3589 qemu_set_nonblock(fd);
3590 return qemu_chr_open_tty_fd(fd);
3592 error_setg(errp, "character device backend type 'serial' not supported");
3597 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3600 #ifdef HAVE_CHARDEV_PARPORT
3603 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3604 if (error_is_set(errp)) {
3607 return qemu_chr_open_pp_fd(fd);
3609 error_setg(errp, "character device backend type 'parallel' not supported");
3616 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3619 SocketAddress *addr = sock->addr;
3620 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3621 bool is_listen = sock->has_server ? sock->server : true;
3622 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3623 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3627 fd = socket_listen(addr, errp);
3629 fd = socket_connect(addr, errp, NULL, NULL);
3631 if (error_is_set(errp)) {
3634 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3635 is_telnet, is_waitconnect, errp);
3638 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3643 fd = socket_dgram(udp->remote, udp->local, errp);
3644 if (error_is_set(errp)) {
3647 return qemu_chr_open_udp_fd(fd);
3650 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3653 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3654 CharDriverState *base, *chr = NULL;
3656 chr = qemu_chr_find(id);
3658 error_setg(errp, "Chardev '%s' already exists", id);
3663 switch (backend->kind) {
3664 case CHARDEV_BACKEND_KIND_FILE:
3665 chr = qmp_chardev_open_file(backend->file, errp);
3667 case CHARDEV_BACKEND_KIND_SERIAL:
3668 chr = qmp_chardev_open_serial(backend->serial, errp);
3670 case CHARDEV_BACKEND_KIND_PARALLEL:
3671 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3673 case CHARDEV_BACKEND_KIND_PIPE:
3674 chr = qemu_chr_open_pipe(backend->pipe);
3676 case CHARDEV_BACKEND_KIND_SOCKET:
3677 chr = qmp_chardev_open_socket(backend->socket, errp);
3679 case CHARDEV_BACKEND_KIND_UDP:
3680 chr = qmp_chardev_open_udp(backend->udp, errp);
3682 #ifdef HAVE_CHARDEV_TTY
3683 case CHARDEV_BACKEND_KIND_PTY:
3684 chr = qemu_chr_open_pty(id, ret);
3687 case CHARDEV_BACKEND_KIND_NULL:
3688 chr = qemu_chr_open_null();
3690 case CHARDEV_BACKEND_KIND_MUX:
3691 base = qemu_chr_find(backend->mux->chardev);
3693 error_setg(errp, "mux: base chardev %s not found",
3694 backend->mux->chardev);
3697 chr = qemu_chr_open_mux(base);
3699 case CHARDEV_BACKEND_KIND_MSMOUSE:
3700 chr = qemu_chr_open_msmouse();
3702 #ifdef CONFIG_BRLAPI
3703 case CHARDEV_BACKEND_KIND_BRAILLE:
3704 chr = chr_baum_init();
3707 case CHARDEV_BACKEND_KIND_STDIO:
3708 chr = qemu_chr_open_stdio(backend->stdio);
3711 case CHARDEV_BACKEND_KIND_CONSOLE:
3712 chr = qemu_chr_open_win_con();
3716 case CHARDEV_BACKEND_KIND_SPICEVMC:
3717 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3719 case CHARDEV_BACKEND_KIND_SPICEPORT:
3720 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3723 case CHARDEV_BACKEND_KIND_VC:
3724 chr = vc_init(backend->vc);
3726 case CHARDEV_BACKEND_KIND_MEMORY:
3727 chr = qemu_chr_open_memory(backend->memory, errp);
3730 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3734 if (chr == NULL && !error_is_set(errp)) {
3735 error_setg(errp, "Failed to create chardev");
3738 chr->label = g_strdup(id);
3739 chr->avail_connections =
3740 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3741 if (!chr->filename) {
3742 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
3744 if (!chr->explicit_be_open) {
3745 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3747 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3755 void qmp_chardev_remove(const char *id, Error **errp)
3757 CharDriverState *chr;
3759 chr = qemu_chr_find(id);
3761 error_setg(errp, "Chardev '%s' not found", id);
3764 if (chr->chr_can_read || chr->chr_read ||
3765 chr->chr_event || chr->handler_opaque) {
3766 error_setg(errp, "Chardev '%s' is busy", id);
3769 qemu_chr_delete(chr);
3772 static void register_types(void)
3774 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3775 register_char_driver("socket", qemu_chr_open_socket);
3776 register_char_driver("udp", qemu_chr_open_udp);
3777 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3778 qemu_chr_parse_memory);
3779 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3780 qemu_chr_parse_file_out);
3781 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3782 qemu_chr_parse_stdio);
3783 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3784 qemu_chr_parse_serial);
3785 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3786 qemu_chr_parse_serial);
3787 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3788 qemu_chr_parse_parallel);
3789 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3790 qemu_chr_parse_parallel);
3791 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3792 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3793 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3794 qemu_chr_parse_pipe);
3795 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
3796 qemu_chr_parse_mux);
3799 type_init(register_types);