4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "qemu-common.h"
25 #include "monitor/monitor.h"
26 #include "ui/console.h"
27 #include "sysemu/sysemu.h"
28 #include "qemu/timer.h"
29 #include "char/char.h"
31 #include "qmp-commands.h"
41 #include <sys/times.h>
45 #include <sys/ioctl.h>
46 #include <sys/resource.h>
47 #include <sys/socket.h>
48 #include <netinet/in.h>
50 #include <arpa/inet.h>
53 #include <sys/select.h>
56 #if defined(__GLIBC__)
58 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
63 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
64 #include <dev/ppbus/ppi.h>
65 #include <dev/ppbus/ppbconf.h>
66 #elif defined(__DragonFly__)
67 #include <dev/misc/ppi/ppi.h>
68 #include <bus/ppbus/ppbconf.h>
74 #include <linux/ppdev.h>
75 #include <linux/parport.h>
79 #include <sys/ethernet.h>
80 #include <sys/sockio.h>
81 #include <netinet/arp.h>
82 #include <netinet/in.h>
83 #include <netinet/in_systm.h>
84 #include <netinet/ip.h>
85 #include <netinet/ip_icmp.h> // must come after ip.h
86 #include <netinet/udp.h>
87 #include <netinet/tcp.h>
95 #include "qemu/sockets.h"
96 #include "ui/qemu-spice.h"
98 #define READ_BUF_LEN 4096
100 /***********************************************************/
101 /* character device */
103 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
104 QTAILQ_HEAD_INITIALIZER(chardevs);
106 void qemu_chr_be_event(CharDriverState *s, int event)
108 /* Keep track if the char device is open */
110 case CHR_EVENT_OPENED:
113 case CHR_EVENT_CLOSED:
120 s->chr_event(s->handler_opaque, event);
123 static gboolean qemu_chr_be_generic_open_bh(gpointer opaque)
125 CharDriverState *s = opaque;
126 qemu_chr_be_event(s, CHR_EVENT_OPENED);
131 void qemu_chr_be_generic_open(CharDriverState *s)
133 if (s->idle_tag == 0) {
134 s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s);
138 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
140 return s->chr_write(s, buf, len);
143 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
148 while (offset < len) {
150 res = s->chr_write(s, buf + offset, len - offset);
151 if (res == -1 && errno == EAGAIN) {
154 } while (res == -1 && errno == EAGAIN);
170 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
174 return s->chr_ioctl(s, cmd, arg);
177 int qemu_chr_be_can_write(CharDriverState *s)
179 if (!s->chr_can_read)
181 return s->chr_can_read(s->handler_opaque);
184 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
187 s->chr_read(s->handler_opaque, buf, len);
191 int qemu_chr_fe_get_msgfd(CharDriverState *s)
193 return s->get_msgfd ? s->get_msgfd(s) : -1;
196 int qemu_chr_add_client(CharDriverState *s, int fd)
198 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
201 void qemu_chr_accept_input(CharDriverState *s)
203 if (s->chr_accept_input)
204 s->chr_accept_input(s);
208 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
210 char buf[READ_BUF_LEN];
213 vsnprintf(buf, sizeof(buf), fmt, ap);
214 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
218 void qemu_chr_add_handlers(CharDriverState *s,
219 IOCanReadHandler *fd_can_read,
220 IOReadHandler *fd_read,
221 IOEventHandler *fd_event,
226 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
227 /* chr driver being released. */
228 ++s->avail_connections;
233 s->chr_can_read = fd_can_read;
234 s->chr_read = fd_read;
235 s->chr_event = fd_event;
236 s->handler_opaque = opaque;
237 if (s->chr_update_read_handler)
238 s->chr_update_read_handler(s);
240 if (!s->explicit_fe_open) {
241 qemu_chr_fe_set_open(s, fe_open);
244 /* We're connecting to an already opened device, so let's make sure we
245 also get the open event */
247 qemu_chr_be_generic_open(s);
251 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
256 static CharDriverState *qemu_chr_open_null(void)
258 CharDriverState *chr;
260 chr = g_malloc0(sizeof(CharDriverState));
261 chr->chr_write = null_chr_write;
265 /* MUX driver for serial I/O splitting */
267 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
268 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
270 IOCanReadHandler *chr_can_read[MAX_MUX];
271 IOReadHandler *chr_read[MAX_MUX];
272 IOEventHandler *chr_event[MAX_MUX];
273 void *ext_opaque[MAX_MUX];
274 CharDriverState *drv;
279 /* Intermediate input buffer allows to catch escape sequences even if the
280 currently active device is not accepting any input - but only until it
282 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
287 int64_t timestamps_start;
291 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
293 MuxDriver *d = chr->opaque;
295 if (!d->timestamps) {
296 ret = d->drv->chr_write(d->drv, buf, len);
301 for (i = 0; i < len; i++) {
307 ti = qemu_get_clock_ms(rt_clock);
308 if (d->timestamps_start == -1)
309 d->timestamps_start = ti;
310 ti -= d->timestamps_start;
312 snprintf(buf1, sizeof(buf1),
313 "[%02d:%02d:%02d.%03d] ",
318 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
321 ret += d->drv->chr_write(d->drv, buf+i, 1);
322 if (buf[i] == '\n') {
330 static const char * const mux_help[] = {
331 "% h print this help\n\r",
332 "% x exit emulator\n\r",
333 "% s save disk data back to file (if -snapshot)\n\r",
334 "% t toggle console timestamps\n\r"
335 "% b send break (magic sysrq)\n\r",
336 "% c switch between console and monitor\n\r",
341 int term_escape_char = 0x01; /* ctrl-a is used for escape */
342 static void mux_print_help(CharDriverState *chr)
345 char ebuf[15] = "Escape-Char";
346 char cbuf[50] = "\n\r";
348 if (term_escape_char > 0 && term_escape_char < 26) {
349 snprintf(cbuf, sizeof(cbuf), "\n\r");
350 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
352 snprintf(cbuf, sizeof(cbuf),
353 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
356 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
357 for (i = 0; mux_help[i] != NULL; i++) {
358 for (j=0; mux_help[i][j] != '\0'; j++) {
359 if (mux_help[i][j] == '%')
360 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
362 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
367 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
369 if (d->chr_event[mux_nr])
370 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
373 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
375 if (d->term_got_escape) {
376 d->term_got_escape = 0;
377 if (ch == term_escape_char)
386 const char *term = "QEMU: Terminated\n\r";
387 chr->chr_write(chr,(uint8_t *)term,strlen(term));
395 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
398 /* Switch to the next registered device */
399 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
401 if (d->focus >= d->mux_cnt)
403 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
406 d->timestamps = !d->timestamps;
407 d->timestamps_start = -1;
411 } else if (ch == term_escape_char) {
412 d->term_got_escape = 1;
420 static void mux_chr_accept_input(CharDriverState *chr)
422 MuxDriver *d = chr->opaque;
425 while (d->prod[m] != d->cons[m] &&
426 d->chr_can_read[m] &&
427 d->chr_can_read[m](d->ext_opaque[m])) {
428 d->chr_read[m](d->ext_opaque[m],
429 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
433 static int mux_chr_can_read(void *opaque)
435 CharDriverState *chr = opaque;
436 MuxDriver *d = chr->opaque;
439 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
441 if (d->chr_can_read[m])
442 return d->chr_can_read[m](d->ext_opaque[m]);
446 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
448 CharDriverState *chr = opaque;
449 MuxDriver *d = chr->opaque;
453 mux_chr_accept_input (opaque);
455 for(i = 0; i < size; i++)
456 if (mux_proc_byte(chr, d, buf[i])) {
457 if (d->prod[m] == d->cons[m] &&
458 d->chr_can_read[m] &&
459 d->chr_can_read[m](d->ext_opaque[m]))
460 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
462 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
466 static void mux_chr_event(void *opaque, int event)
468 CharDriverState *chr = opaque;
469 MuxDriver *d = chr->opaque;
472 /* Send the event to all registered listeners */
473 for (i = 0; i < d->mux_cnt; i++)
474 mux_chr_send_event(d, i, event);
477 static void mux_chr_update_read_handler(CharDriverState *chr)
479 MuxDriver *d = chr->opaque;
481 if (d->mux_cnt >= MAX_MUX) {
482 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
485 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
486 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
487 d->chr_read[d->mux_cnt] = chr->chr_read;
488 d->chr_event[d->mux_cnt] = chr->chr_event;
489 /* Fix up the real driver with mux routines */
490 if (d->mux_cnt == 0) {
491 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
494 if (d->focus != -1) {
495 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
497 d->focus = d->mux_cnt;
499 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
502 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
504 CharDriverState *chr;
507 chr = g_malloc0(sizeof(CharDriverState));
508 d = g_malloc0(sizeof(MuxDriver));
513 chr->chr_write = mux_chr_write;
514 chr->chr_update_read_handler = mux_chr_update_read_handler;
515 chr->chr_accept_input = mux_chr_accept_input;
516 /* Frontend guest-open / -close notification is not support with muxes */
517 chr->chr_guest_open = NULL;
518 chr->chr_guest_close = NULL;
520 /* Muxes are always open on creation */
521 qemu_chr_be_generic_open(chr);
528 int send_all(int fd, const void *buf, int len1)
534 ret = send(fd, buf, len, 0);
536 errno = WSAGetLastError();
537 if (errno != WSAEWOULDBLOCK) {
540 } else if (ret == 0) {
552 int send_all(int fd, const void *_buf, int len1)
555 const uint8_t *buf = _buf;
559 ret = write(fd, buf, len);
561 if (errno != EINTR && errno != EAGAIN)
563 } else if (ret == 0) {
573 int recv_all(int fd, void *_buf, int len1, bool single_read)
579 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
581 if (errno != EINTR && errno != EAGAIN) {
598 typedef struct IOWatchPoll
603 IOCanReadHandler *fd_can_read;
606 QTAILQ_ENTRY(IOWatchPoll) node;
609 static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
610 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
612 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
616 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
617 if (i->src == source) {
625 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
627 IOWatchPoll *iwp = io_watch_poll_from_source(source);
629 iwp->max_size = iwp->fd_can_read(iwp->opaque);
630 if (iwp->max_size == 0) {
634 return g_io_watch_funcs.prepare(source, timeout_);
637 static gboolean io_watch_poll_check(GSource *source)
639 IOWatchPoll *iwp = io_watch_poll_from_source(source);
641 if (iwp->max_size == 0) {
645 return g_io_watch_funcs.check(source);
648 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
651 return g_io_watch_funcs.dispatch(source, callback, user_data);
654 static void io_watch_poll_finalize(GSource *source)
656 IOWatchPoll *iwp = io_watch_poll_from_source(source);
657 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
658 g_io_watch_funcs.finalize(source);
661 static GSourceFuncs io_watch_poll_funcs = {
662 .prepare = io_watch_poll_prepare,
663 .check = io_watch_poll_check,
664 .dispatch = io_watch_poll_dispatch,
665 .finalize = io_watch_poll_finalize,
668 /* Can only be used for read */
669 static guint io_add_watch_poll(GIOChannel *channel,
670 IOCanReadHandler *fd_can_read,
678 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
679 g_source_set_funcs(src, &io_watch_poll_funcs);
680 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
681 tag = g_source_attach(src, NULL);
684 iwp = g_malloc0(sizeof(*iwp));
687 iwp->fd_can_read = fd_can_read;
688 iwp->opaque = user_data;
690 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
696 static GIOChannel *io_channel_from_fd(int fd)
704 chan = g_io_channel_unix_new(fd);
706 g_io_channel_set_encoding(chan, NULL, NULL);
707 g_io_channel_set_buffered(chan, FALSE);
713 static GIOChannel *io_channel_from_socket(int fd)
722 chan = g_io_channel_win32_new_socket(fd);
724 chan = g_io_channel_unix_new(fd);
727 g_io_channel_set_encoding(chan, NULL, NULL);
728 g_io_channel_set_buffered(chan, FALSE);
733 static int io_channel_send_all(GIOChannel *fd, const void *_buf, int len1)
738 const uint8_t *buf = _buf;
742 status = g_io_channel_write_chars(fd, (const gchar *)buf, len,
743 &bytes_written, NULL);
744 if (status != G_IO_STATUS_NORMAL) {
745 if (status == G_IO_STATUS_AGAIN) {
752 } else if (status == G_IO_STATUS_EOF) {
755 buf += bytes_written;
756 len -= bytes_written;
764 typedef struct FDCharDriver {
765 CharDriverState *chr;
766 GIOChannel *fd_in, *fd_out;
769 QTAILQ_ENTRY(FDCharDriver) node;
772 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
774 FDCharDriver *s = chr->opaque;
776 return io_channel_send_all(s->fd_out, buf, len);
779 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
781 CharDriverState *chr = opaque;
782 FDCharDriver *s = chr->opaque;
784 uint8_t buf[READ_BUF_LEN];
789 if (len > s->max_size) {
796 status = g_io_channel_read_chars(chan, (gchar *)buf,
797 len, &bytes_read, NULL);
798 if (status == G_IO_STATUS_EOF) {
799 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
802 if (status == G_IO_STATUS_NORMAL) {
803 qemu_chr_be_write(chr, buf, bytes_read);
809 static int fd_chr_read_poll(void *opaque)
811 CharDriverState *chr = opaque;
812 FDCharDriver *s = chr->opaque;
814 s->max_size = qemu_chr_be_can_write(chr);
818 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
820 FDCharDriver *s = chr->opaque;
821 return g_io_create_watch(s->fd_out, cond);
824 static void fd_chr_update_read_handler(CharDriverState *chr)
826 FDCharDriver *s = chr->opaque;
829 g_source_remove(s->fd_in_tag);
833 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
837 static void fd_chr_close(struct CharDriverState *chr)
839 FDCharDriver *s = chr->opaque;
842 g_source_remove(s->fd_in_tag);
847 g_io_channel_unref(s->fd_in);
850 g_io_channel_unref(s->fd_out);
854 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
857 /* open a character device to a unix fd */
858 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
860 CharDriverState *chr;
863 chr = g_malloc0(sizeof(CharDriverState));
864 s = g_malloc0(sizeof(FDCharDriver));
865 s->fd_in = io_channel_from_fd(fd_in);
866 s->fd_out = io_channel_from_fd(fd_out);
867 fcntl(fd_out, F_SETFL, O_NONBLOCK);
870 chr->chr_add_watch = fd_chr_add_watch;
871 chr->chr_write = fd_chr_write;
872 chr->chr_update_read_handler = fd_chr_update_read_handler;
873 chr->chr_close = fd_chr_close;
875 qemu_chr_be_generic_open(chr);
880 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
883 char filename_in[256], filename_out[256];
884 const char *filename = opts->device;
886 if (filename == NULL) {
887 fprintf(stderr, "chardev: pipe: no filename given\n");
891 snprintf(filename_in, 256, "%s.in", filename);
892 snprintf(filename_out, 256, "%s.out", filename);
893 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
894 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
895 if (fd_in < 0 || fd_out < 0) {
900 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
905 return qemu_chr_open_fd(fd_in, fd_out);
908 /* init terminal so that we can grab keys */
909 static struct termios oldtty;
910 static int old_fd0_flags;
911 static bool stdio_allow_signal;
913 static void term_exit(void)
915 tcsetattr (0, TCSANOW, &oldtty);
916 fcntl(0, F_SETFL, old_fd0_flags);
919 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
925 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
926 |INLCR|IGNCR|ICRNL|IXON);
927 tty.c_oflag |= OPOST;
928 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
929 tty.c_cflag &= ~(CSIZE|PARENB);
934 /* if graphical mode, we allow Ctrl-C handling */
935 if (!stdio_allow_signal)
936 tty.c_lflag &= ~ISIG;
938 tcsetattr (0, TCSANOW, &tty);
941 static void qemu_chr_close_stdio(struct CharDriverState *chr)
947 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
949 CharDriverState *chr;
951 if (is_daemonized()) {
952 error_report("cannot use stdio with -daemonize");
955 old_fd0_flags = fcntl(0, F_GETFL);
956 tcgetattr (0, &oldtty);
957 fcntl(0, F_SETFL, O_NONBLOCK);
960 chr = qemu_chr_open_fd(0, 1);
961 chr->chr_close = qemu_chr_close_stdio;
962 chr->chr_set_echo = qemu_chr_set_echo_stdio;
963 stdio_allow_signal = display_type != DT_NOGRAPHIC;
964 if (opts->has_signal) {
965 stdio_allow_signal = opts->signal;
967 qemu_chr_fe_set_echo(chr, false);
973 /* Once Solaris has openpty(), this is going to be removed. */
974 static int openpty(int *amaster, int *aslave, char *name,
975 struct termios *termp, struct winsize *winp)
978 int mfd = -1, sfd = -1;
980 *amaster = *aslave = -1;
982 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
986 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
989 if ((slave = ptsname(mfd)) == NULL)
992 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
995 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
996 (termp != NULL && tcgetattr(sfd, termp) < 0))
1004 ioctl(sfd, TIOCSWINSZ, winp);
1015 static void cfmakeraw (struct termios *termios_p)
1017 termios_p->c_iflag &=
1018 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1019 termios_p->c_oflag &= ~OPOST;
1020 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1021 termios_p->c_cflag &= ~(CSIZE|PARENB);
1022 termios_p->c_cflag |= CS8;
1024 termios_p->c_cc[VMIN] = 0;
1025 termios_p->c_cc[VTIME] = 0;
1029 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1030 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1031 || defined(__GLIBC__)
1033 #define HAVE_CHARDEV_TTY 1
1044 static void pty_chr_update_read_handler(CharDriverState *chr);
1045 static void pty_chr_state(CharDriverState *chr, int connected);
1047 static gboolean pty_chr_timer(gpointer opaque)
1049 struct CharDriverState *chr = opaque;
1050 PtyCharDriver *s = chr->opaque;
1056 /* If we arrive here without polling being cleared due
1057 * read returning -EIO, then we are (re-)connected */
1058 pty_chr_state(chr, 1);
1063 pty_chr_update_read_handler(chr);
1069 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1071 PtyCharDriver *s = chr->opaque;
1074 g_source_remove(s->timer_tag);
1079 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1081 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1085 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1087 PtyCharDriver *s = chr->opaque;
1089 if (!s->connected) {
1090 /* guest sends data, check for (re-)connect */
1091 pty_chr_update_read_handler(chr);
1094 return io_channel_send_all(s->fd, buf, len);
1097 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1099 PtyCharDriver *s = chr->opaque;
1100 return g_io_create_watch(s->fd, cond);
1103 static int pty_chr_read_poll(void *opaque)
1105 CharDriverState *chr = opaque;
1106 PtyCharDriver *s = chr->opaque;
1108 s->read_bytes = qemu_chr_be_can_write(chr);
1109 return s->read_bytes;
1112 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1114 CharDriverState *chr = opaque;
1115 PtyCharDriver *s = chr->opaque;
1117 uint8_t buf[READ_BUF_LEN];
1121 if (len > s->read_bytes)
1122 len = s->read_bytes;
1125 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1126 if (status != G_IO_STATUS_NORMAL) {
1127 pty_chr_state(chr, 0);
1130 pty_chr_state(chr, 1);
1131 qemu_chr_be_write(chr, buf, size);
1136 static void pty_chr_update_read_handler(CharDriverState *chr)
1138 PtyCharDriver *s = chr->opaque;
1141 g_source_remove(s->fd_tag);
1144 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1147 * Short timeout here: just need wait long enougth that qemu makes
1148 * it through the poll loop once. When reconnected we want a
1149 * short timeout so we notice it almost instantly. Otherwise
1150 * read() gives us -EIO instantly, making pty_chr_state() reset the
1151 * timeout to the normal (much longer) poll interval before the
1154 pty_chr_rearm_timer(chr, 10);
1157 static void pty_chr_state(CharDriverState *chr, int connected)
1159 PtyCharDriver *s = chr->opaque;
1162 g_source_remove(s->fd_tag);
1166 /* (re-)connect poll interval for idle guests: once per second.
1167 * We check more frequently in case the guests sends data to
1168 * the virtual device linked to our pty. */
1169 pty_chr_rearm_timer(chr, 1000);
1172 qemu_chr_be_generic_open(chr);
1178 static void pty_chr_close(struct CharDriverState *chr)
1180 PtyCharDriver *s = chr->opaque;
1184 g_source_remove(s->fd_tag);
1186 fd = g_io_channel_unix_get_fd(s->fd);
1187 g_io_channel_unref(s->fd);
1190 g_source_remove(s->timer_tag);
1193 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1196 static CharDriverState *qemu_chr_open_pty(const char *id,
1199 CharDriverState *chr;
1202 int master_fd, slave_fd;
1203 #if defined(__OpenBSD__) || defined(__DragonFly__)
1204 char pty_name[PATH_MAX];
1205 #define q_ptsname(x) pty_name
1207 char *pty_name = NULL;
1208 #define q_ptsname(x) ptsname(x)
1211 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1215 /* Set raw attributes on the pty. */
1216 tcgetattr(slave_fd, &tty);
1218 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1221 chr = g_malloc0(sizeof(CharDriverState));
1223 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1224 ret->pty = g_strdup(q_ptsname(master_fd));
1225 ret->has_pty = true;
1227 fprintf(stderr, "char device redirected to %s (label %s)\n",
1228 q_ptsname(master_fd), id);
1230 s = g_malloc0(sizeof(PtyCharDriver));
1232 chr->chr_write = pty_chr_write;
1233 chr->chr_update_read_handler = pty_chr_update_read_handler;
1234 chr->chr_close = pty_chr_close;
1235 chr->chr_add_watch = pty_chr_add_watch;
1237 s->fd = io_channel_from_fd(master_fd);
1243 static void tty_serial_init(int fd, int speed,
1244 int parity, int data_bits, int stop_bits)
1250 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1251 speed, parity, data_bits, stop_bits);
1253 tcgetattr (fd, &tty);
1255 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1256 speed = speed * 10 / 11;
1273 /* Non-Posix values follow. They may be unsupported on some systems. */
1275 check_speed(115200);
1277 check_speed(230400);
1280 check_speed(460800);
1283 check_speed(500000);
1286 check_speed(576000);
1289 check_speed(921600);
1292 check_speed(1000000);
1295 check_speed(1152000);
1298 check_speed(1500000);
1301 check_speed(2000000);
1304 check_speed(2500000);
1307 check_speed(3000000);
1310 check_speed(3500000);
1313 check_speed(4000000);
1318 cfsetispeed(&tty, spd);
1319 cfsetospeed(&tty, spd);
1321 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1322 |INLCR|IGNCR|ICRNL|IXON);
1323 tty.c_oflag |= OPOST;
1324 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1325 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1346 tty.c_cflag |= PARENB;
1349 tty.c_cflag |= PARENB | PARODD;
1353 tty.c_cflag |= CSTOPB;
1355 tcsetattr (fd, TCSANOW, &tty);
1358 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1360 FDCharDriver *s = chr->opaque;
1363 case CHR_IOCTL_SERIAL_SET_PARAMS:
1365 QEMUSerialSetParams *ssp = arg;
1366 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1367 ssp->speed, ssp->parity,
1368 ssp->data_bits, ssp->stop_bits);
1371 case CHR_IOCTL_SERIAL_SET_BREAK:
1373 int enable = *(int *)arg;
1375 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1379 case CHR_IOCTL_SERIAL_GET_TIOCM:
1382 int *targ = (int *)arg;
1383 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1385 if (sarg & TIOCM_CTS)
1386 *targ |= CHR_TIOCM_CTS;
1387 if (sarg & TIOCM_CAR)
1388 *targ |= CHR_TIOCM_CAR;
1389 if (sarg & TIOCM_DSR)
1390 *targ |= CHR_TIOCM_DSR;
1391 if (sarg & TIOCM_RI)
1392 *targ |= CHR_TIOCM_RI;
1393 if (sarg & TIOCM_DTR)
1394 *targ |= CHR_TIOCM_DTR;
1395 if (sarg & TIOCM_RTS)
1396 *targ |= CHR_TIOCM_RTS;
1399 case CHR_IOCTL_SERIAL_SET_TIOCM:
1401 int sarg = *(int *)arg;
1403 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1404 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1405 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1406 if (sarg & CHR_TIOCM_CTS)
1408 if (sarg & CHR_TIOCM_CAR)
1410 if (sarg & CHR_TIOCM_DSR)
1412 if (sarg & CHR_TIOCM_RI)
1414 if (sarg & CHR_TIOCM_DTR)
1416 if (sarg & CHR_TIOCM_RTS)
1418 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1427 static void qemu_chr_close_tty(CharDriverState *chr)
1429 FDCharDriver *s = chr->opaque;
1433 fd = g_io_channel_unix_get_fd(s->fd_in);
1443 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1445 CharDriverState *chr;
1447 tty_serial_init(fd, 115200, 'N', 8, 1);
1448 chr = qemu_chr_open_fd(fd, fd);
1449 chr->chr_ioctl = tty_serial_ioctl;
1450 chr->chr_close = qemu_chr_close_tty;
1453 #endif /* __linux__ || __sun__ */
1455 #if defined(__linux__)
1457 #define HAVE_CHARDEV_PARPORT 1
1462 } ParallelCharDriver;
1464 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1466 if (s->mode != mode) {
1468 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1475 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1477 ParallelCharDriver *drv = chr->opaque;
1482 case CHR_IOCTL_PP_READ_DATA:
1483 if (ioctl(fd, PPRDATA, &b) < 0)
1485 *(uint8_t *)arg = b;
1487 case CHR_IOCTL_PP_WRITE_DATA:
1488 b = *(uint8_t *)arg;
1489 if (ioctl(fd, PPWDATA, &b) < 0)
1492 case CHR_IOCTL_PP_READ_CONTROL:
1493 if (ioctl(fd, PPRCONTROL, &b) < 0)
1495 /* Linux gives only the lowest bits, and no way to know data
1496 direction! For better compatibility set the fixed upper
1498 *(uint8_t *)arg = b | 0xc0;
1500 case CHR_IOCTL_PP_WRITE_CONTROL:
1501 b = *(uint8_t *)arg;
1502 if (ioctl(fd, PPWCONTROL, &b) < 0)
1505 case CHR_IOCTL_PP_READ_STATUS:
1506 if (ioctl(fd, PPRSTATUS, &b) < 0)
1508 *(uint8_t *)arg = b;
1510 case CHR_IOCTL_PP_DATA_DIR:
1511 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1514 case CHR_IOCTL_PP_EPP_READ_ADDR:
1515 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1516 struct ParallelIOArg *parg = arg;
1517 int n = read(fd, parg->buffer, parg->count);
1518 if (n != parg->count) {
1523 case CHR_IOCTL_PP_EPP_READ:
1524 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1525 struct ParallelIOArg *parg = arg;
1526 int n = read(fd, parg->buffer, parg->count);
1527 if (n != parg->count) {
1532 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1533 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1534 struct ParallelIOArg *parg = arg;
1535 int n = write(fd, parg->buffer, parg->count);
1536 if (n != parg->count) {
1541 case CHR_IOCTL_PP_EPP_WRITE:
1542 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1543 struct ParallelIOArg *parg = arg;
1544 int n = write(fd, parg->buffer, parg->count);
1545 if (n != parg->count) {
1556 static void pp_close(CharDriverState *chr)
1558 ParallelCharDriver *drv = chr->opaque;
1561 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1562 ioctl(fd, PPRELEASE);
1565 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1568 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1570 CharDriverState *chr;
1571 ParallelCharDriver *drv;
1573 if (ioctl(fd, PPCLAIM) < 0) {
1578 drv = g_malloc0(sizeof(ParallelCharDriver));
1580 drv->mode = IEEE1284_MODE_COMPAT;
1582 chr = g_malloc0(sizeof(CharDriverState));
1583 chr->chr_write = null_chr_write;
1584 chr->chr_ioctl = pp_ioctl;
1585 chr->chr_close = pp_close;
1588 qemu_chr_be_generic_open(chr);
1592 #endif /* __linux__ */
1594 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1596 #define HAVE_CHARDEV_PARPORT 1
1598 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1600 int fd = (int)(intptr_t)chr->opaque;
1604 case CHR_IOCTL_PP_READ_DATA:
1605 if (ioctl(fd, PPIGDATA, &b) < 0)
1607 *(uint8_t *)arg = b;
1609 case CHR_IOCTL_PP_WRITE_DATA:
1610 b = *(uint8_t *)arg;
1611 if (ioctl(fd, PPISDATA, &b) < 0)
1614 case CHR_IOCTL_PP_READ_CONTROL:
1615 if (ioctl(fd, PPIGCTRL, &b) < 0)
1617 *(uint8_t *)arg = b;
1619 case CHR_IOCTL_PP_WRITE_CONTROL:
1620 b = *(uint8_t *)arg;
1621 if (ioctl(fd, PPISCTRL, &b) < 0)
1624 case CHR_IOCTL_PP_READ_STATUS:
1625 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1627 *(uint8_t *)arg = b;
1635 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1637 CharDriverState *chr;
1639 chr = g_malloc0(sizeof(CharDriverState));
1640 chr->opaque = (void *)(intptr_t)fd;
1641 chr->chr_write = null_chr_write;
1642 chr->chr_ioctl = pp_ioctl;
1651 HANDLE hcom, hrecv, hsend;
1652 OVERLAPPED orecv, osend;
1659 HANDLE hInputReadyEvent;
1660 HANDLE hInputDoneEvent;
1661 HANDLE hInputThread;
1662 uint8_t win_stdio_buf;
1663 } WinStdioCharState;
1665 #define NSENDBUF 2048
1666 #define NRECVBUF 2048
1667 #define MAXCONNECT 1
1668 #define NTIMEOUT 5000
1670 static int win_chr_poll(void *opaque);
1671 static int win_chr_pipe_poll(void *opaque);
1673 static void win_chr_close(CharDriverState *chr)
1675 WinCharState *s = chr->opaque;
1678 CloseHandle(s->hsend);
1682 CloseHandle(s->hrecv);
1686 CloseHandle(s->hcom);
1690 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1692 qemu_del_polling_cb(win_chr_poll, chr);
1694 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1697 static int win_chr_init(CharDriverState *chr, const char *filename)
1699 WinCharState *s = chr->opaque;
1701 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1706 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1708 fprintf(stderr, "Failed CreateEvent\n");
1711 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1713 fprintf(stderr, "Failed CreateEvent\n");
1717 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1718 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1719 if (s->hcom == INVALID_HANDLE_VALUE) {
1720 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1725 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1726 fprintf(stderr, "Failed SetupComm\n");
1730 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1731 size = sizeof(COMMCONFIG);
1732 GetDefaultCommConfig(filename, &comcfg, &size);
1733 comcfg.dcb.DCBlength = sizeof(DCB);
1734 CommConfigDialog(filename, NULL, &comcfg);
1736 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1737 fprintf(stderr, "Failed SetCommState\n");
1741 if (!SetCommMask(s->hcom, EV_ERR)) {
1742 fprintf(stderr, "Failed SetCommMask\n");
1746 cto.ReadIntervalTimeout = MAXDWORD;
1747 if (!SetCommTimeouts(s->hcom, &cto)) {
1748 fprintf(stderr, "Failed SetCommTimeouts\n");
1752 if (!ClearCommError(s->hcom, &err, &comstat)) {
1753 fprintf(stderr, "Failed ClearCommError\n");
1756 qemu_add_polling_cb(win_chr_poll, chr);
1764 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1766 WinCharState *s = chr->opaque;
1767 DWORD len, ret, size, err;
1770 ZeroMemory(&s->osend, sizeof(s->osend));
1771 s->osend.hEvent = s->hsend;
1774 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1776 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1778 err = GetLastError();
1779 if (err == ERROR_IO_PENDING) {
1780 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1798 static int win_chr_read_poll(CharDriverState *chr)
1800 WinCharState *s = chr->opaque;
1802 s->max_size = qemu_chr_be_can_write(chr);
1806 static void win_chr_readfile(CharDriverState *chr)
1808 WinCharState *s = chr->opaque;
1810 uint8_t buf[READ_BUF_LEN];
1813 ZeroMemory(&s->orecv, sizeof(s->orecv));
1814 s->orecv.hEvent = s->hrecv;
1815 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1817 err = GetLastError();
1818 if (err == ERROR_IO_PENDING) {
1819 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1824 qemu_chr_be_write(chr, buf, size);
1828 static void win_chr_read(CharDriverState *chr)
1830 WinCharState *s = chr->opaque;
1832 if (s->len > s->max_size)
1833 s->len = s->max_size;
1837 win_chr_readfile(chr);
1840 static int win_chr_poll(void *opaque)
1842 CharDriverState *chr = opaque;
1843 WinCharState *s = chr->opaque;
1847 ClearCommError(s->hcom, &comerr, &status);
1848 if (status.cbInQue > 0) {
1849 s->len = status.cbInQue;
1850 win_chr_read_poll(chr);
1857 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1859 CharDriverState *chr;
1862 chr = g_malloc0(sizeof(CharDriverState));
1863 s = g_malloc0(sizeof(WinCharState));
1865 chr->chr_write = win_chr_write;
1866 chr->chr_close = win_chr_close;
1868 if (win_chr_init(chr, filename) < 0) {
1873 qemu_chr_be_generic_open(chr);
1877 static int win_chr_pipe_poll(void *opaque)
1879 CharDriverState *chr = opaque;
1880 WinCharState *s = chr->opaque;
1883 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1886 win_chr_read_poll(chr);
1893 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1895 WinCharState *s = chr->opaque;
1903 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1905 fprintf(stderr, "Failed CreateEvent\n");
1908 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1910 fprintf(stderr, "Failed CreateEvent\n");
1914 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1915 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1916 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1918 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1919 if (s->hcom == INVALID_HANDLE_VALUE) {
1920 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1925 ZeroMemory(&ov, sizeof(ov));
1926 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1927 ret = ConnectNamedPipe(s->hcom, &ov);
1929 fprintf(stderr, "Failed ConnectNamedPipe\n");
1933 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1935 fprintf(stderr, "Failed GetOverlappedResult\n");
1937 CloseHandle(ov.hEvent);
1944 CloseHandle(ov.hEvent);
1947 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1956 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1958 const char *filename = opts->device;
1959 CharDriverState *chr;
1962 chr = g_malloc0(sizeof(CharDriverState));
1963 s = g_malloc0(sizeof(WinCharState));
1965 chr->chr_write = win_chr_write;
1966 chr->chr_close = win_chr_close;
1968 if (win_chr_pipe_init(chr, filename) < 0) {
1973 qemu_chr_be_generic_open(chr);
1977 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1979 CharDriverState *chr;
1982 chr = g_malloc0(sizeof(CharDriverState));
1983 s = g_malloc0(sizeof(WinCharState));
1986 chr->chr_write = win_chr_write;
1987 qemu_chr_be_generic_open(chr);
1991 static CharDriverState *qemu_chr_open_win_con(void)
1993 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1996 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1998 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2005 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2015 static void win_stdio_wait_func(void *opaque)
2017 CharDriverState *chr = opaque;
2018 WinStdioCharState *stdio = chr->opaque;
2019 INPUT_RECORD buf[4];
2024 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2028 /* Avoid error storm */
2029 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2033 for (i = 0; i < dwSize; i++) {
2034 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2036 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2038 if (kev->uChar.AsciiChar != 0) {
2039 for (j = 0; j < kev->wRepeatCount; j++) {
2040 if (qemu_chr_be_can_write(chr)) {
2041 uint8_t c = kev->uChar.AsciiChar;
2042 qemu_chr_be_write(chr, &c, 1);
2050 static DWORD WINAPI win_stdio_thread(LPVOID param)
2052 CharDriverState *chr = param;
2053 WinStdioCharState *stdio = chr->opaque;
2059 /* Wait for one byte */
2060 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2062 /* Exit in case of error, continue if nothing read */
2070 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2071 if (stdio->win_stdio_buf == '\r') {
2075 /* Signal the main thread and wait until the byte was eaten */
2076 if (!SetEvent(stdio->hInputReadyEvent)) {
2079 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2085 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2089 static void win_stdio_thread_wait_func(void *opaque)
2091 CharDriverState *chr = opaque;
2092 WinStdioCharState *stdio = chr->opaque;
2094 if (qemu_chr_be_can_write(chr)) {
2095 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2098 SetEvent(stdio->hInputDoneEvent);
2101 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2103 WinStdioCharState *stdio = chr->opaque;
2106 GetConsoleMode(stdio->hStdIn, &dwMode);
2109 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2111 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2115 static void win_stdio_close(CharDriverState *chr)
2117 WinStdioCharState *stdio = chr->opaque;
2119 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2120 CloseHandle(stdio->hInputReadyEvent);
2122 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2123 CloseHandle(stdio->hInputDoneEvent);
2125 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2126 TerminateThread(stdio->hInputThread, 0);
2129 g_free(chr->opaque);
2133 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2135 CharDriverState *chr;
2136 WinStdioCharState *stdio;
2140 chr = g_malloc0(sizeof(CharDriverState));
2141 stdio = g_malloc0(sizeof(WinStdioCharState));
2143 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2144 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2145 fprintf(stderr, "cannot open stdio: invalid handle\n");
2149 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2151 chr->opaque = stdio;
2152 chr->chr_write = win_stdio_write;
2153 chr->chr_close = win_stdio_close;
2156 if (qemu_add_wait_object(stdio->hStdIn,
2157 win_stdio_wait_func, chr)) {
2158 fprintf(stderr, "qemu_add_wait_object: failed\n");
2163 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2164 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2165 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2168 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2169 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2170 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2171 fprintf(stderr, "cannot create stdio thread or event\n");
2174 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2175 win_stdio_thread_wait_func, chr)) {
2176 fprintf(stderr, "qemu_add_wait_object: failed\n");
2180 dwMode |= ENABLE_LINE_INPUT;
2183 /* set the terminal in raw mode */
2184 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2185 dwMode |= ENABLE_PROCESSED_INPUT;
2188 SetConsoleMode(stdio->hStdIn, dwMode);
2190 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2191 qemu_chr_fe_set_echo(chr, false);
2195 #endif /* !_WIN32 */
2198 /***********************************************************/
2199 /* UDP Net console */
2205 uint8_t buf[READ_BUF_LEN];
2211 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2213 NetCharDriver *s = chr->opaque;
2214 gsize bytes_written;
2217 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2218 if (status == G_IO_STATUS_EOF) {
2220 } else if (status != G_IO_STATUS_NORMAL) {
2224 return bytes_written;
2227 static int udp_chr_read_poll(void *opaque)
2229 CharDriverState *chr = opaque;
2230 NetCharDriver *s = chr->opaque;
2232 s->max_size = qemu_chr_be_can_write(chr);
2234 /* If there were any stray characters in the queue process them
2237 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2238 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2240 s->max_size = qemu_chr_be_can_write(chr);
2245 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2247 CharDriverState *chr = opaque;
2248 NetCharDriver *s = chr->opaque;
2249 gsize bytes_read = 0;
2252 if (s->max_size == 0)
2254 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2256 s->bufcnt = bytes_read;
2257 s->bufptr = s->bufcnt;
2258 if (status != G_IO_STATUS_NORMAL) {
2263 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2264 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2266 s->max_size = qemu_chr_be_can_write(chr);
2272 static void udp_chr_update_read_handler(CharDriverState *chr)
2274 NetCharDriver *s = chr->opaque;
2277 g_source_remove(s->tag);
2282 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2286 static void udp_chr_close(CharDriverState *chr)
2288 NetCharDriver *s = chr->opaque;
2290 g_source_remove(s->tag);
2293 g_io_channel_unref(s->chan);
2297 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2300 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2302 CharDriverState *chr = NULL;
2303 NetCharDriver *s = NULL;
2305 chr = g_malloc0(sizeof(CharDriverState));
2306 s = g_malloc0(sizeof(NetCharDriver));
2309 s->chan = io_channel_from_socket(s->fd);
2313 chr->chr_write = udp_chr_write;
2314 chr->chr_update_read_handler = udp_chr_update_read_handler;
2315 chr->chr_close = udp_chr_close;
2319 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2321 Error *local_err = NULL;
2324 fd = inet_dgram_opts(opts, &local_err);
2328 return qemu_chr_open_udp_fd(fd);
2331 /***********************************************************/
2332 /* TCP Net console */
2336 GIOChannel *chan, *listen_chan;
2337 guint tag, listen_tag;
2347 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2349 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2351 TCPCharDriver *s = chr->opaque;
2353 return io_channel_send_all(s->chan, buf, len);
2355 /* XXX: indicate an error ? */
2360 static int tcp_chr_read_poll(void *opaque)
2362 CharDriverState *chr = opaque;
2363 TCPCharDriver *s = chr->opaque;
2366 s->max_size = qemu_chr_be_can_write(chr);
2371 #define IAC_BREAK 243
2372 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2374 uint8_t *buf, int *size)
2376 /* Handle any telnet client's basic IAC options to satisfy char by
2377 * char mode with no echo. All IAC options will be removed from
2378 * the buf and the do_telnetopt variable will be used to track the
2379 * state of the width of the IAC information.
2381 * IAC commands come in sets of 3 bytes with the exception of the
2382 * "IAC BREAK" command and the double IAC.
2388 for (i = 0; i < *size; i++) {
2389 if (s->do_telnetopt > 1) {
2390 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2391 /* Double IAC means send an IAC */
2395 s->do_telnetopt = 1;
2397 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2398 /* Handle IAC break commands by sending a serial break */
2399 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2404 if (s->do_telnetopt >= 4) {
2405 s->do_telnetopt = 1;
2408 if ((unsigned char)buf[i] == IAC) {
2409 s->do_telnetopt = 2;
2420 static int tcp_get_msgfd(CharDriverState *chr)
2422 TCPCharDriver *s = chr->opaque;
2429 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2431 TCPCharDriver *s = chr->opaque;
2432 struct cmsghdr *cmsg;
2434 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2437 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2438 cmsg->cmsg_level != SOL_SOCKET ||
2439 cmsg->cmsg_type != SCM_RIGHTS)
2442 fd = *((int *)CMSG_DATA(cmsg));
2446 #ifndef MSG_CMSG_CLOEXEC
2447 qemu_set_cloexec(fd);
2455 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2457 TCPCharDriver *s = chr->opaque;
2458 struct msghdr msg = { NULL, };
2459 struct iovec iov[1];
2461 struct cmsghdr cmsg;
2462 char control[CMSG_SPACE(sizeof(int))];
2467 iov[0].iov_base = buf;
2468 iov[0].iov_len = len;
2472 msg.msg_control = &msg_control;
2473 msg.msg_controllen = sizeof(msg_control);
2475 #ifdef MSG_CMSG_CLOEXEC
2476 flags |= MSG_CMSG_CLOEXEC;
2478 ret = recvmsg(s->fd, &msg, flags);
2479 if (ret > 0 && s->is_unix) {
2480 unix_process_msgfd(chr, &msg);
2486 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2488 TCPCharDriver *s = chr->opaque;
2489 return qemu_recv(s->fd, buf, len, 0);
2493 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2495 TCPCharDriver *s = chr->opaque;
2496 return g_io_create_watch(s->chan, cond);
2499 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2501 CharDriverState *chr = opaque;
2502 TCPCharDriver *s = chr->opaque;
2503 uint8_t buf[READ_BUF_LEN];
2506 if (!s->connected || s->max_size <= 0) {
2510 if (len > s->max_size)
2512 size = tcp_chr_recv(chr, (void *)buf, len);
2514 /* connection closed */
2516 if (s->listen_chan) {
2517 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2519 g_source_remove(s->tag);
2521 g_io_channel_unref(s->chan);
2525 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2526 } else if (size > 0) {
2527 if (s->do_telnetopt)
2528 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2530 qemu_chr_be_write(chr, buf, size);
2537 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2539 return qemu_chr_open_fd(eventfd, eventfd);
2543 static void tcp_chr_connect(void *opaque)
2545 CharDriverState *chr = opaque;
2546 TCPCharDriver *s = chr->opaque;
2550 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2552 qemu_chr_be_generic_open(chr);
2555 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2556 static void tcp_chr_telnet_init(int fd)
2559 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2560 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2561 send(fd, (char *)buf, 3, 0);
2562 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2563 send(fd, (char *)buf, 3, 0);
2564 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2565 send(fd, (char *)buf, 3, 0);
2566 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2567 send(fd, (char *)buf, 3, 0);
2570 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2572 TCPCharDriver *s = chr->opaque;
2576 socket_set_nonblock(fd);
2578 socket_set_nodelay(fd);
2580 s->chan = io_channel_from_socket(fd);
2581 g_source_remove(s->listen_tag);
2583 tcp_chr_connect(chr);
2588 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2590 CharDriverState *chr = opaque;
2591 TCPCharDriver *s = chr->opaque;
2592 struct sockaddr_in saddr;
2594 struct sockaddr_un uaddr;
2596 struct sockaddr *addr;
2603 len = sizeof(uaddr);
2604 addr = (struct sockaddr *)&uaddr;
2608 len = sizeof(saddr);
2609 addr = (struct sockaddr *)&saddr;
2611 fd = qemu_accept(s->listen_fd, addr, &len);
2612 if (fd < 0 && errno != EINTR) {
2614 } else if (fd >= 0) {
2615 if (s->do_telnetopt)
2616 tcp_chr_telnet_init(fd);
2620 if (tcp_chr_add_client(chr, fd) < 0)
2626 static void tcp_chr_close(CharDriverState *chr)
2628 TCPCharDriver *s = chr->opaque;
2631 g_source_remove(s->tag);
2634 g_io_channel_unref(s->chan);
2638 if (s->listen_fd >= 0) {
2639 if (s->listen_tag) {
2640 g_source_remove(s->listen_tag);
2642 if (s->listen_chan) {
2643 g_io_channel_unref(s->listen_chan);
2645 closesocket(s->listen_fd);
2648 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2651 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2652 bool is_listen, bool is_telnet,
2653 bool is_waitconnect,
2656 CharDriverState *chr = NULL;
2657 TCPCharDriver *s = NULL;
2658 char host[NI_MAXHOST], serv[NI_MAXSERV];
2659 const char *left = "", *right = "";
2660 struct sockaddr_storage ss;
2661 socklen_t ss_len = sizeof(ss);
2663 memset(&ss, 0, ss_len);
2664 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2665 error_setg(errp, "getsockname: %s", strerror(errno));
2669 chr = g_malloc0(sizeof(CharDriverState));
2670 s = g_malloc0(sizeof(TCPCharDriver));
2677 chr->filename = g_malloc(256);
2678 switch (ss.ss_family) {
2682 snprintf(chr->filename, 256, "unix:%s%s",
2683 ((struct sockaddr_un *)(&ss))->sun_path,
2684 is_listen ? ",server" : "");
2692 s->do_nodelay = do_nodelay;
2693 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2694 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2695 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2696 is_telnet ? "telnet" : "tcp",
2697 left, host, right, serv,
2698 is_listen ? ",server" : "");
2703 chr->chr_write = tcp_chr_write;
2704 chr->chr_close = tcp_chr_close;
2705 chr->get_msgfd = tcp_get_msgfd;
2706 chr->chr_add_client = tcp_chr_add_client;
2707 chr->chr_add_watch = tcp_chr_add_watch;
2711 s->listen_chan = io_channel_from_socket(s->listen_fd);
2712 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2714 s->do_telnetopt = 1;
2719 socket_set_nodelay(fd);
2720 s->chan = io_channel_from_socket(s->fd);
2721 tcp_chr_connect(chr);
2724 if (is_listen && is_waitconnect) {
2725 printf("QEMU waiting for connection on: %s\n",
2727 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2728 socket_set_nonblock(s->listen_fd);
2733 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2735 CharDriverState *chr = NULL;
2736 Error *local_err = NULL;
2744 is_listen = qemu_opt_get_bool(opts, "server", 0);
2745 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2746 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2747 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2748 is_unix = qemu_opt_get(opts, "path") != NULL;
2754 fd = unix_listen_opts(opts, &local_err);
2756 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2760 fd = inet_listen_opts(opts, 0, &local_err);
2762 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2769 if (!is_waitconnect)
2770 socket_set_nonblock(fd);
2772 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2773 is_waitconnect, &local_err);
2774 if (error_is_set(&local_err)) {
2782 qerror_report_err(local_err);
2783 error_free(local_err);
2789 g_free(chr->opaque);
2795 /***********************************************************/
2796 /* Memory chardev */
2799 size_t outbuf_capacity;
2803 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2805 MemoryDriver *d = chr->opaque;
2807 /* TODO: the QString implementation has the same code, we should
2808 * introduce a generic way to do this in cutils.c */
2809 if (d->outbuf_capacity < d->outbuf_size + len) {
2811 d->outbuf_capacity += len;
2812 d->outbuf_capacity *= 2;
2813 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2816 memcpy(d->outbuf + d->outbuf_size, buf, len);
2817 d->outbuf_size += len;
2822 void qemu_chr_init_mem(CharDriverState *chr)
2826 d = g_malloc(sizeof(*d));
2828 d->outbuf_capacity = 4096;
2829 d->outbuf = g_malloc0(d->outbuf_capacity);
2831 memset(chr, 0, sizeof(*chr));
2833 chr->chr_write = mem_chr_write;
2836 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2838 MemoryDriver *d = chr->opaque;
2839 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2842 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2843 void qemu_chr_close_mem(CharDriverState *chr)
2845 MemoryDriver *d = chr->opaque;
2848 g_free(chr->opaque);
2850 chr->chr_write = NULL;
2853 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2855 const MemoryDriver *d = chr->opaque;
2856 return d->outbuf_size;
2859 /*********************************************************/
2860 /* Ring buffer chardev */
2867 } RingBufCharDriver;
2869 static size_t ringbuf_count(const CharDriverState *chr)
2871 const RingBufCharDriver *d = chr->opaque;
2873 return d->prod - d->cons;
2876 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2878 RingBufCharDriver *d = chr->opaque;
2881 if (!buf || (len < 0)) {
2885 for (i = 0; i < len; i++ ) {
2886 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2887 if (d->prod - d->cons > d->size) {
2888 d->cons = d->prod - d->size;
2895 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2897 RingBufCharDriver *d = chr->opaque;
2900 for (i = 0; i < len && d->cons != d->prod; i++) {
2901 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2907 static void ringbuf_chr_close(struct CharDriverState *chr)
2909 RingBufCharDriver *d = chr->opaque;
2916 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2919 CharDriverState *chr;
2920 RingBufCharDriver *d;
2922 chr = g_malloc0(sizeof(CharDriverState));
2923 d = g_malloc(sizeof(*d));
2925 d->size = opts->has_size ? opts->size : 65536;
2927 /* The size must be power of 2 */
2928 if (d->size & (d->size - 1)) {
2929 error_setg(errp, "size of ringbuf chardev must be power of two");
2935 d->cbuf = g_malloc0(d->size);
2938 chr->chr_write = ringbuf_chr_write;
2939 chr->chr_close = ringbuf_chr_close;
2949 static bool chr_is_ringbuf(const CharDriverState *chr)
2951 return chr->chr_write == ringbuf_chr_write;
2954 void qmp_ringbuf_write(const char *device, const char *data,
2955 bool has_format, enum DataFormat format,
2958 CharDriverState *chr;
2959 const uint8_t *write_data;
2963 chr = qemu_chr_find(device);
2965 error_setg(errp, "Device '%s' not found", device);
2969 if (!chr_is_ringbuf(chr)) {
2970 error_setg(errp,"%s is not a ringbuf device", device);
2974 if (has_format && (format == DATA_FORMAT_BASE64)) {
2975 write_data = g_base64_decode(data, &write_count);
2977 write_data = (uint8_t *)data;
2978 write_count = strlen(data);
2981 ret = ringbuf_chr_write(chr, write_data, write_count);
2983 if (write_data != (uint8_t *)data) {
2984 g_free((void *)write_data);
2988 error_setg(errp, "Failed to write to device %s", device);
2993 char *qmp_ringbuf_read(const char *device, int64_t size,
2994 bool has_format, enum DataFormat format,
2997 CharDriverState *chr;
3002 chr = qemu_chr_find(device);
3004 error_setg(errp, "Device '%s' not found", device);
3008 if (!chr_is_ringbuf(chr)) {
3009 error_setg(errp,"%s is not a ringbuf device", device);
3014 error_setg(errp, "size must be greater than zero");
3018 count = ringbuf_count(chr);
3019 size = size > count ? count : size;
3020 read_data = g_malloc(size + 1);
3022 ringbuf_chr_read(chr, read_data, size);
3024 if (has_format && (format == DATA_FORMAT_BASE64)) {
3025 data = g_base64_encode(read_data, size);
3029 * FIXME should read only complete, valid UTF-8 characters up
3030 * to @size bytes. Invalid sequences should be replaced by a
3031 * suitable replacement character. Except when (and only
3032 * when) ring buffer lost characters since last read, initial
3033 * continuation characters should be dropped.
3035 read_data[size] = 0;
3036 data = (char *)read_data;
3042 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3044 char host[65], port[33], width[8], height[8];
3048 Error *local_err = NULL;
3050 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3051 if (error_is_set(&local_err)) {
3052 qerror_report_err(local_err);
3053 error_free(local_err);
3057 if (strstart(filename, "mon:", &p)) {
3059 qemu_opt_set(opts, "mux", "on");
3062 if (strcmp(filename, "null") == 0 ||
3063 strcmp(filename, "pty") == 0 ||
3064 strcmp(filename, "msmouse") == 0 ||
3065 strcmp(filename, "braille") == 0 ||
3066 strcmp(filename, "stdio") == 0) {
3067 qemu_opt_set(opts, "backend", filename);
3070 if (strstart(filename, "vc", &p)) {
3071 qemu_opt_set(opts, "backend", "vc");
3073 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3075 qemu_opt_set(opts, "width", width);
3076 qemu_opt_set(opts, "height", height);
3077 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3079 qemu_opt_set(opts, "cols", width);
3080 qemu_opt_set(opts, "rows", height);
3087 if (strcmp(filename, "con:") == 0) {
3088 qemu_opt_set(opts, "backend", "console");
3091 if (strstart(filename, "COM", NULL)) {
3092 qemu_opt_set(opts, "backend", "serial");
3093 qemu_opt_set(opts, "path", filename);
3096 if (strstart(filename, "file:", &p)) {
3097 qemu_opt_set(opts, "backend", "file");
3098 qemu_opt_set(opts, "path", p);
3101 if (strstart(filename, "pipe:", &p)) {
3102 qemu_opt_set(opts, "backend", "pipe");
3103 qemu_opt_set(opts, "path", p);
3106 if (strstart(filename, "tcp:", &p) ||
3107 strstart(filename, "telnet:", &p)) {
3108 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3110 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3113 qemu_opt_set(opts, "backend", "socket");
3114 qemu_opt_set(opts, "host", host);
3115 qemu_opt_set(opts, "port", port);
3116 if (p[pos] == ',') {
3117 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3120 if (strstart(filename, "telnet:", &p))
3121 qemu_opt_set(opts, "telnet", "on");
3124 if (strstart(filename, "udp:", &p)) {
3125 qemu_opt_set(opts, "backend", "udp");
3126 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3128 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3132 qemu_opt_set(opts, "host", host);
3133 qemu_opt_set(opts, "port", port);
3134 if (p[pos] == '@') {
3136 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3138 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3142 qemu_opt_set(opts, "localaddr", host);
3143 qemu_opt_set(opts, "localport", port);
3147 if (strstart(filename, "unix:", &p)) {
3148 qemu_opt_set(opts, "backend", "socket");
3149 if (qemu_opts_do_parse(opts, p, "path") != 0)
3153 if (strstart(filename, "/dev/parport", NULL) ||
3154 strstart(filename, "/dev/ppi", NULL)) {
3155 qemu_opt_set(opts, "backend", "parport");
3156 qemu_opt_set(opts, "path", filename);
3159 if (strstart(filename, "/dev/", NULL)) {
3160 qemu_opt_set(opts, "backend", "tty");
3161 qemu_opt_set(opts, "path", filename);
3166 qemu_opts_del(opts);
3170 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3173 const char *path = qemu_opt_get(opts, "path");
3176 error_setg(errp, "chardev: file: no filename given");
3179 backend->file = g_new0(ChardevFile, 1);
3180 backend->file->out = g_strdup(path);
3183 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3186 backend->stdio = g_new0(ChardevStdio, 1);
3187 backend->stdio->has_signal = true;
3188 backend->stdio->signal =
3189 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3192 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3195 const char *device = qemu_opt_get(opts, "path");
3197 if (device == NULL) {
3198 error_setg(errp, "chardev: serial/tty: no device path given");
3201 backend->serial = g_new0(ChardevHostdev, 1);
3202 backend->serial->device = g_strdup(device);
3205 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3208 const char *device = qemu_opt_get(opts, "path");
3210 if (device == NULL) {
3211 error_setg(errp, "chardev: parallel: no device path given");
3214 backend->parallel = g_new0(ChardevHostdev, 1);
3215 backend->parallel->device = g_strdup(device);
3218 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3221 const char *device = qemu_opt_get(opts, "path");
3223 if (device == NULL) {
3224 error_setg(errp, "chardev: pipe: no device path given");
3227 backend->pipe = g_new0(ChardevHostdev, 1);
3228 backend->pipe->device = g_strdup(device);
3231 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3236 backend->memory = g_new0(ChardevRingbuf, 1);
3238 val = qemu_opt_get_number(opts, "size", 0);
3240 backend->memory->has_size = true;
3241 backend->memory->size = val;
3245 typedef struct CharDriver {
3248 CharDriverState *(*open)(QemuOpts *opts);
3249 /* new, qapi-based */
3251 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3254 static GSList *backends;
3256 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3260 s = g_malloc0(sizeof(*s));
3261 s->name = g_strdup(name);
3264 backends = g_slist_append(backends, s);
3267 void register_char_driver_qapi(const char *name, int kind,
3268 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3272 s = g_malloc0(sizeof(*s));
3273 s->name = g_strdup(name);
3277 backends = g_slist_append(backends, s);
3280 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3281 void (*init)(struct CharDriverState *s),
3285 CharDriverState *chr;
3288 if (qemu_opts_id(opts) == NULL) {
3289 error_setg(errp, "chardev: no id specified");
3293 if (qemu_opt_get(opts, "backend") == NULL) {
3294 error_setg(errp, "chardev: \"%s\" missing backend",
3295 qemu_opts_id(opts));
3298 for (i = backends; i; i = i->next) {
3301 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3306 error_setg(errp, "chardev: backend \"%s\" not found",
3307 qemu_opt_get(opts, "backend"));
3312 /* using new, qapi init */
3313 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3314 ChardevReturn *ret = NULL;
3315 const char *id = qemu_opts_id(opts);
3316 const char *bid = NULL;
3318 if (qemu_opt_get_bool(opts, "mux", 0)) {
3319 bid = g_strdup_printf("%s-base", id);
3323 backend->kind = cd->kind;
3325 cd->parse(opts, backend, errp);
3326 if (error_is_set(errp)) {
3330 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3331 if (error_is_set(errp)) {
3336 qapi_free_ChardevBackend(backend);
3337 qapi_free_ChardevReturn(ret);
3338 backend = g_new0(ChardevBackend, 1);
3339 backend->mux = g_new0(ChardevMux, 1);
3340 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3341 backend->mux->chardev = g_strdup(bid);
3342 ret = qmp_chardev_add(id, backend, errp);
3343 if (error_is_set(errp)) {
3348 chr = qemu_chr_find(id);
3351 qapi_free_ChardevBackend(backend);
3352 qapi_free_ChardevReturn(ret);
3356 chr = cd->open(opts);
3358 error_setg(errp, "chardev: opening backend \"%s\" failed",
3359 qemu_opt_get(opts, "backend"));
3364 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3366 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3368 if (qemu_opt_get_bool(opts, "mux", 0)) {
3369 CharDriverState *base = chr;
3370 int len = strlen(qemu_opts_id(opts)) + 6;
3371 base->label = g_malloc(len);
3372 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3373 chr = qemu_chr_open_mux(base);
3374 chr->filename = base->filename;
3375 chr->avail_connections = MAX_MUX;
3376 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3378 chr->avail_connections = 1;
3380 chr->label = g_strdup(qemu_opts_id(opts));
3385 qemu_opts_del(opts);
3389 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3392 CharDriverState *chr;
3396 if (strstart(filename, "chardev:", &p)) {
3397 return qemu_chr_find(p);
3400 opts = qemu_chr_parse_compat(label, filename);
3404 chr = qemu_chr_new_from_opts(opts, init, &err);
3405 if (error_is_set(&err)) {
3406 fprintf(stderr, "%s\n", error_get_pretty(err));
3409 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3410 monitor_init(chr, MONITOR_USE_READLINE);
3415 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3417 if (chr->chr_set_echo) {
3418 chr->chr_set_echo(chr, echo);
3422 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3424 if (chr->fe_open == fe_open) {
3427 chr->fe_open = fe_open;
3428 if (fe_open && chr->chr_guest_open) {
3429 chr->chr_guest_open(chr);
3431 if (!fe_open && chr->chr_guest_close) {
3432 chr->chr_guest_close(chr);
3436 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3437 GIOFunc func, void *user_data)
3442 if (s->chr_add_watch == NULL) {
3446 src = s->chr_add_watch(s, cond);
3447 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3448 tag = g_source_attach(src, NULL);
3449 g_source_unref(src);
3454 void qemu_chr_delete(CharDriverState *chr)
3456 QTAILQ_REMOVE(&chardevs, chr, next);
3457 if (chr->chr_close) {
3458 chr->chr_close(chr);
3460 g_free(chr->filename);
3463 qemu_opts_del(chr->opts);
3468 ChardevInfoList *qmp_query_chardev(Error **errp)
3470 ChardevInfoList *chr_list = NULL;
3471 CharDriverState *chr;
3473 QTAILQ_FOREACH(chr, &chardevs, next) {
3474 ChardevInfoList *info = g_malloc0(sizeof(*info));
3475 info->value = g_malloc0(sizeof(*info->value));
3476 info->value->label = g_strdup(chr->label);
3477 info->value->filename = g_strdup(chr->filename);
3479 info->next = chr_list;
3486 CharDriverState *qemu_chr_find(const char *name)
3488 CharDriverState *chr;
3490 QTAILQ_FOREACH(chr, &chardevs, next) {
3491 if (strcmp(chr->label, name) != 0)
3498 /* Get a character (serial) device interface. */
3499 CharDriverState *qemu_char_get_next_serial(void)
3501 static int next_serial;
3503 /* FIXME: This function needs to go away: use chardev properties! */
3504 return serial_hds[next_serial++];
3507 QemuOptsList qemu_chardev_opts = {
3509 .implied_opt_name = "backend",
3510 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3514 .type = QEMU_OPT_STRING,
3517 .type = QEMU_OPT_STRING,
3520 .type = QEMU_OPT_STRING,
3523 .type = QEMU_OPT_STRING,
3525 .name = "localaddr",
3526 .type = QEMU_OPT_STRING,
3528 .name = "localport",
3529 .type = QEMU_OPT_STRING,
3532 .type = QEMU_OPT_NUMBER,
3535 .type = QEMU_OPT_BOOL,
3538 .type = QEMU_OPT_BOOL,
3541 .type = QEMU_OPT_BOOL,
3544 .type = QEMU_OPT_BOOL,
3547 .type = QEMU_OPT_BOOL,
3550 .type = QEMU_OPT_BOOL,
3553 .type = QEMU_OPT_NUMBER,
3556 .type = QEMU_OPT_NUMBER,
3559 .type = QEMU_OPT_NUMBER,
3562 .type = QEMU_OPT_NUMBER,
3565 .type = QEMU_OPT_BOOL,
3568 .type = QEMU_OPT_BOOL,
3571 .type = QEMU_OPT_STRING,
3574 .type = QEMU_OPT_NUMBER,
3577 .type = QEMU_OPT_SIZE,
3579 { /* end of list */ }
3585 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3590 error_setg(errp, "input file not supported");
3594 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3595 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3596 if (out == INVALID_HANDLE_VALUE) {
3597 error_setg(errp, "open %s failed", file->out);
3600 return qemu_chr_open_win_file(out);
3603 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3606 return qemu_chr_open_win_path(serial->device);
3609 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3612 error_setg(errp, "character device backend type 'parallel' not supported");
3618 static int qmp_chardev_open_file_source(char *src, int flags,
3623 TFR(fd = qemu_open(src, flags, 0666));
3625 error_setg(errp, "open %s: %s", src, strerror(errno));
3630 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3632 int flags, in = -1, out = -1;
3634 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3635 out = qmp_chardev_open_file_source(file->out, flags, errp);
3636 if (error_is_set(errp)) {
3642 in = qmp_chardev_open_file_source(file->in, flags, errp);
3643 if (error_is_set(errp)) {
3649 return qemu_chr_open_fd(in, out);
3652 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3655 #ifdef HAVE_CHARDEV_TTY
3658 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3659 if (error_is_set(errp)) {
3662 socket_set_nonblock(fd);
3663 return qemu_chr_open_tty_fd(fd);
3665 error_setg(errp, "character device backend type 'serial' not supported");
3670 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3673 #ifdef HAVE_CHARDEV_PARPORT
3676 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3677 if (error_is_set(errp)) {
3680 return qemu_chr_open_pp_fd(fd);
3682 error_setg(errp, "character device backend type 'parallel' not supported");
3689 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3692 SocketAddress *addr = sock->addr;
3693 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3694 bool is_listen = sock->has_server ? sock->server : true;
3695 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3696 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3700 fd = socket_listen(addr, errp);
3702 fd = socket_connect(addr, errp, NULL, NULL);
3704 if (error_is_set(errp)) {
3707 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3708 is_telnet, is_waitconnect, errp);
3711 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3716 fd = socket_dgram(dgram->remote, dgram->local, errp);
3717 if (error_is_set(errp)) {
3720 return qemu_chr_open_udp_fd(fd);
3723 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3726 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3727 CharDriverState *base, *chr = NULL;
3729 chr = qemu_chr_find(id);
3731 error_setg(errp, "Chardev '%s' already exists", id);
3736 switch (backend->kind) {
3737 case CHARDEV_BACKEND_KIND_FILE:
3738 chr = qmp_chardev_open_file(backend->file, errp);
3740 case CHARDEV_BACKEND_KIND_SERIAL:
3741 chr = qmp_chardev_open_serial(backend->serial, errp);
3743 case CHARDEV_BACKEND_KIND_PARALLEL:
3744 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3746 case CHARDEV_BACKEND_KIND_PIPE:
3747 chr = qemu_chr_open_pipe(backend->pipe);
3749 case CHARDEV_BACKEND_KIND_SOCKET:
3750 chr = qmp_chardev_open_socket(backend->socket, errp);
3752 case CHARDEV_BACKEND_KIND_DGRAM:
3753 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3755 #ifdef HAVE_CHARDEV_TTY
3756 case CHARDEV_BACKEND_KIND_PTY:
3757 chr = qemu_chr_open_pty(id, ret);
3760 case CHARDEV_BACKEND_KIND_NULL:
3761 chr = qemu_chr_open_null();
3763 case CHARDEV_BACKEND_KIND_MUX:
3764 base = qemu_chr_find(backend->mux->chardev);
3766 error_setg(errp, "mux: base chardev %s not found",
3767 backend->mux->chardev);
3770 chr = qemu_chr_open_mux(base);
3772 case CHARDEV_BACKEND_KIND_MSMOUSE:
3773 chr = qemu_chr_open_msmouse();
3775 #ifdef CONFIG_BRLAPI
3776 case CHARDEV_BACKEND_KIND_BRAILLE:
3777 chr = chr_baum_init();
3780 case CHARDEV_BACKEND_KIND_STDIO:
3781 chr = qemu_chr_open_stdio(backend->stdio);
3784 case CHARDEV_BACKEND_KIND_CONSOLE:
3785 chr = qemu_chr_open_win_con();
3789 case CHARDEV_BACKEND_KIND_SPICEVMC:
3790 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3792 case CHARDEV_BACKEND_KIND_SPICEPORT:
3793 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3796 case CHARDEV_BACKEND_KIND_VC:
3797 chr = vc_init(backend->vc);
3799 case CHARDEV_BACKEND_KIND_MEMORY:
3800 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3803 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3807 if (chr == NULL && !error_is_set(errp)) {
3808 error_setg(errp, "Failed to create chardev");
3811 chr->label = g_strdup(id);
3812 chr->avail_connections =
3813 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3814 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3822 void qmp_chardev_remove(const char *id, Error **errp)
3824 CharDriverState *chr;
3826 chr = qemu_chr_find(id);
3828 error_setg(errp, "Chardev '%s' not found", id);
3831 if (chr->chr_can_read || chr->chr_read ||
3832 chr->chr_event || chr->handler_opaque) {
3833 error_setg(errp, "Chardev '%s' is busy", id);
3836 qemu_chr_delete(chr);
3839 static void register_types(void)
3841 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3842 register_char_driver("socket", qemu_chr_open_socket);
3843 register_char_driver("udp", qemu_chr_open_udp);
3844 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3845 qemu_chr_parse_ringbuf);
3846 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3847 qemu_chr_parse_file_out);
3848 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3849 qemu_chr_parse_stdio);
3850 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3851 qemu_chr_parse_serial);
3852 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3853 qemu_chr_parse_serial);
3854 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3855 qemu_chr_parse_parallel);
3856 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3857 qemu_chr_parse_parallel);
3858 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3859 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3860 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3861 qemu_chr_parse_pipe);
3864 type_init(register_types);