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)
727 while (offset < len) {
730 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
731 &bytes_written, NULL);
732 if (status != G_IO_STATUS_NORMAL) {
733 if (status == G_IO_STATUS_AGAIN) {
734 /* If we've written any data, return a partial write. */
744 } else if (status == G_IO_STATUS_EOF) {
748 offset += bytes_written;
756 typedef struct FDCharDriver {
757 CharDriverState *chr;
758 GIOChannel *fd_in, *fd_out;
761 QTAILQ_ENTRY(FDCharDriver) node;
764 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
766 FDCharDriver *s = chr->opaque;
768 return io_channel_send(s->fd_out, buf, len);
771 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
773 CharDriverState *chr = opaque;
774 FDCharDriver *s = chr->opaque;
776 uint8_t buf[READ_BUF_LEN];
781 if (len > s->max_size) {
788 status = g_io_channel_read_chars(chan, (gchar *)buf,
789 len, &bytes_read, NULL);
790 if (status == G_IO_STATUS_EOF) {
792 io_remove_watch_poll(s->fd_in_tag);
795 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
798 if (status == G_IO_STATUS_NORMAL) {
799 qemu_chr_be_write(chr, buf, bytes_read);
805 static int fd_chr_read_poll(void *opaque)
807 CharDriverState *chr = opaque;
808 FDCharDriver *s = chr->opaque;
810 s->max_size = qemu_chr_be_can_write(chr);
814 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
816 FDCharDriver *s = chr->opaque;
817 return g_io_create_watch(s->fd_out, cond);
820 static void fd_chr_update_read_handler(CharDriverState *chr)
822 FDCharDriver *s = chr->opaque;
825 io_remove_watch_poll(s->fd_in_tag);
830 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
834 static void fd_chr_close(struct CharDriverState *chr)
836 FDCharDriver *s = chr->opaque;
839 io_remove_watch_poll(s->fd_in_tag);
844 g_io_channel_unref(s->fd_in);
847 g_io_channel_unref(s->fd_out);
851 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
854 /* open a character device to a unix fd */
855 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
857 CharDriverState *chr;
860 chr = g_malloc0(sizeof(CharDriverState));
861 s = g_malloc0(sizeof(FDCharDriver));
862 s->fd_in = io_channel_from_fd(fd_in);
863 s->fd_out = io_channel_from_fd(fd_out);
864 fcntl(fd_out, F_SETFL, O_NONBLOCK);
867 chr->chr_add_watch = fd_chr_add_watch;
868 chr->chr_write = fd_chr_write;
869 chr->chr_update_read_handler = fd_chr_update_read_handler;
870 chr->chr_close = fd_chr_close;
875 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
878 char filename_in[256], filename_out[256];
879 const char *filename = opts->device;
881 if (filename == NULL) {
882 fprintf(stderr, "chardev: pipe: no filename given\n");
886 snprintf(filename_in, 256, "%s.in", filename);
887 snprintf(filename_out, 256, "%s.out", filename);
888 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
889 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
890 if (fd_in < 0 || fd_out < 0) {
895 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
900 return qemu_chr_open_fd(fd_in, fd_out);
903 /* init terminal so that we can grab keys */
904 static struct termios oldtty;
905 static int old_fd0_flags;
906 static bool stdio_allow_signal;
908 static void term_exit(void)
910 tcsetattr (0, TCSANOW, &oldtty);
911 fcntl(0, F_SETFL, old_fd0_flags);
914 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
920 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
921 |INLCR|IGNCR|ICRNL|IXON);
922 tty.c_oflag |= OPOST;
923 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
924 tty.c_cflag &= ~(CSIZE|PARENB);
929 if (!stdio_allow_signal)
930 tty.c_lflag &= ~ISIG;
932 tcsetattr (0, TCSANOW, &tty);
935 static void qemu_chr_close_stdio(struct CharDriverState *chr)
941 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
943 CharDriverState *chr;
945 if (is_daemonized()) {
946 error_report("cannot use stdio with -daemonize");
949 old_fd0_flags = fcntl(0, F_GETFL);
950 tcgetattr (0, &oldtty);
951 fcntl(0, F_SETFL, O_NONBLOCK);
954 chr = qemu_chr_open_fd(0, 1);
955 chr->chr_close = qemu_chr_close_stdio;
956 chr->chr_set_echo = qemu_chr_set_echo_stdio;
957 if (opts->has_signal) {
958 stdio_allow_signal = opts->signal;
960 qemu_chr_fe_set_echo(chr, false);
965 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
966 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
967 || defined(__GLIBC__)
969 #define HAVE_CHARDEV_TTY 1
979 static void pty_chr_update_read_handler(CharDriverState *chr);
980 static void pty_chr_state(CharDriverState *chr, int connected);
982 static gboolean pty_chr_timer(gpointer opaque)
984 struct CharDriverState *chr = opaque;
985 PtyCharDriver *s = chr->opaque;
992 pty_chr_update_read_handler(chr);
999 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1001 PtyCharDriver *s = chr->opaque;
1004 g_source_remove(s->timer_tag);
1009 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1011 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1015 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1017 PtyCharDriver *s = chr->opaque;
1019 if (!s->connected) {
1020 /* guest sends data, check for (re-)connect */
1021 pty_chr_update_read_handler(chr);
1024 return io_channel_send(s->fd, buf, len);
1027 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1029 PtyCharDriver *s = chr->opaque;
1030 return g_io_create_watch(s->fd, cond);
1033 static int pty_chr_read_poll(void *opaque)
1035 CharDriverState *chr = opaque;
1036 PtyCharDriver *s = chr->opaque;
1038 s->read_bytes = qemu_chr_be_can_write(chr);
1039 return s->read_bytes;
1042 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1044 CharDriverState *chr = opaque;
1045 PtyCharDriver *s = chr->opaque;
1047 uint8_t buf[READ_BUF_LEN];
1051 if (len > s->read_bytes)
1052 len = s->read_bytes;
1056 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1057 if (status != G_IO_STATUS_NORMAL) {
1058 pty_chr_state(chr, 0);
1061 pty_chr_state(chr, 1);
1062 qemu_chr_be_write(chr, buf, size);
1067 static void pty_chr_update_read_handler(CharDriverState *chr)
1069 PtyCharDriver *s = chr->opaque;
1072 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1073 pfd.events = G_IO_OUT;
1076 if (pfd.revents & G_IO_HUP) {
1077 pty_chr_state(chr, 0);
1079 pty_chr_state(chr, 1);
1083 static void pty_chr_state(CharDriverState *chr, int connected)
1085 PtyCharDriver *s = chr->opaque;
1089 io_remove_watch_poll(s->fd_tag);
1093 /* (re-)connect poll interval for idle guests: once per second.
1094 * We check more frequently in case the guests sends data to
1095 * the virtual device linked to our pty. */
1096 pty_chr_rearm_timer(chr, 1000);
1099 g_source_remove(s->timer_tag);
1102 if (!s->connected) {
1103 qemu_chr_be_generic_open(chr);
1105 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1111 static void pty_chr_close(struct CharDriverState *chr)
1113 PtyCharDriver *s = chr->opaque;
1117 io_remove_watch_poll(s->fd_tag);
1120 fd = g_io_channel_unix_get_fd(s->fd);
1121 g_io_channel_unref(s->fd);
1124 g_source_remove(s->timer_tag);
1128 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1131 static CharDriverState *qemu_chr_open_pty(const char *id,
1134 CharDriverState *chr;
1136 int master_fd, slave_fd;
1137 char pty_name[PATH_MAX];
1139 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1140 if (master_fd < 0) {
1146 chr = g_malloc0(sizeof(CharDriverState));
1148 chr->filename = g_strdup_printf("pty:%s", pty_name);
1149 ret->pty = g_strdup(pty_name);
1150 ret->has_pty = true;
1152 fprintf(stderr, "char device redirected to %s (label %s)\n",
1155 s = g_malloc0(sizeof(PtyCharDriver));
1157 chr->chr_write = pty_chr_write;
1158 chr->chr_update_read_handler = pty_chr_update_read_handler;
1159 chr->chr_close = pty_chr_close;
1160 chr->chr_add_watch = pty_chr_add_watch;
1161 chr->explicit_be_open = true;
1163 s->fd = io_channel_from_fd(master_fd);
1169 static void tty_serial_init(int fd, int speed,
1170 int parity, int data_bits, int stop_bits)
1176 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1177 speed, parity, data_bits, stop_bits);
1179 tcgetattr (fd, &tty);
1181 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1182 speed = speed * 10 / 11;
1199 /* Non-Posix values follow. They may be unsupported on some systems. */
1201 check_speed(115200);
1203 check_speed(230400);
1206 check_speed(460800);
1209 check_speed(500000);
1212 check_speed(576000);
1215 check_speed(921600);
1218 check_speed(1000000);
1221 check_speed(1152000);
1224 check_speed(1500000);
1227 check_speed(2000000);
1230 check_speed(2500000);
1233 check_speed(3000000);
1236 check_speed(3500000);
1239 check_speed(4000000);
1244 cfsetispeed(&tty, spd);
1245 cfsetospeed(&tty, spd);
1247 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1248 |INLCR|IGNCR|ICRNL|IXON);
1249 tty.c_oflag |= OPOST;
1250 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1251 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1272 tty.c_cflag |= PARENB;
1275 tty.c_cflag |= PARENB | PARODD;
1279 tty.c_cflag |= CSTOPB;
1281 tcsetattr (fd, TCSANOW, &tty);
1284 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1286 FDCharDriver *s = chr->opaque;
1289 case CHR_IOCTL_SERIAL_SET_PARAMS:
1291 QEMUSerialSetParams *ssp = arg;
1292 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1293 ssp->speed, ssp->parity,
1294 ssp->data_bits, ssp->stop_bits);
1297 case CHR_IOCTL_SERIAL_SET_BREAK:
1299 int enable = *(int *)arg;
1301 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1305 case CHR_IOCTL_SERIAL_GET_TIOCM:
1308 int *targ = (int *)arg;
1309 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1311 if (sarg & TIOCM_CTS)
1312 *targ |= CHR_TIOCM_CTS;
1313 if (sarg & TIOCM_CAR)
1314 *targ |= CHR_TIOCM_CAR;
1315 if (sarg & TIOCM_DSR)
1316 *targ |= CHR_TIOCM_DSR;
1317 if (sarg & TIOCM_RI)
1318 *targ |= CHR_TIOCM_RI;
1319 if (sarg & TIOCM_DTR)
1320 *targ |= CHR_TIOCM_DTR;
1321 if (sarg & TIOCM_RTS)
1322 *targ |= CHR_TIOCM_RTS;
1325 case CHR_IOCTL_SERIAL_SET_TIOCM:
1327 int sarg = *(int *)arg;
1329 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1330 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1331 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1332 if (sarg & CHR_TIOCM_CTS)
1334 if (sarg & CHR_TIOCM_CAR)
1336 if (sarg & CHR_TIOCM_DSR)
1338 if (sarg & CHR_TIOCM_RI)
1340 if (sarg & CHR_TIOCM_DTR)
1342 if (sarg & CHR_TIOCM_RTS)
1344 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1353 static void qemu_chr_close_tty(CharDriverState *chr)
1355 FDCharDriver *s = chr->opaque;
1359 fd = g_io_channel_unix_get_fd(s->fd_in);
1369 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1371 CharDriverState *chr;
1373 tty_serial_init(fd, 115200, 'N', 8, 1);
1374 chr = qemu_chr_open_fd(fd, fd);
1375 chr->chr_ioctl = tty_serial_ioctl;
1376 chr->chr_close = qemu_chr_close_tty;
1379 #endif /* __linux__ || __sun__ */
1381 #if defined(__linux__)
1383 #define HAVE_CHARDEV_PARPORT 1
1388 } ParallelCharDriver;
1390 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1392 if (s->mode != mode) {
1394 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1401 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1403 ParallelCharDriver *drv = chr->opaque;
1408 case CHR_IOCTL_PP_READ_DATA:
1409 if (ioctl(fd, PPRDATA, &b) < 0)
1411 *(uint8_t *)arg = b;
1413 case CHR_IOCTL_PP_WRITE_DATA:
1414 b = *(uint8_t *)arg;
1415 if (ioctl(fd, PPWDATA, &b) < 0)
1418 case CHR_IOCTL_PP_READ_CONTROL:
1419 if (ioctl(fd, PPRCONTROL, &b) < 0)
1421 /* Linux gives only the lowest bits, and no way to know data
1422 direction! For better compatibility set the fixed upper
1424 *(uint8_t *)arg = b | 0xc0;
1426 case CHR_IOCTL_PP_WRITE_CONTROL:
1427 b = *(uint8_t *)arg;
1428 if (ioctl(fd, PPWCONTROL, &b) < 0)
1431 case CHR_IOCTL_PP_READ_STATUS:
1432 if (ioctl(fd, PPRSTATUS, &b) < 0)
1434 *(uint8_t *)arg = b;
1436 case CHR_IOCTL_PP_DATA_DIR:
1437 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1440 case CHR_IOCTL_PP_EPP_READ_ADDR:
1441 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1442 struct ParallelIOArg *parg = arg;
1443 int n = read(fd, parg->buffer, parg->count);
1444 if (n != parg->count) {
1449 case CHR_IOCTL_PP_EPP_READ:
1450 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1451 struct ParallelIOArg *parg = arg;
1452 int n = read(fd, parg->buffer, parg->count);
1453 if (n != parg->count) {
1458 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1459 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1460 struct ParallelIOArg *parg = arg;
1461 int n = write(fd, parg->buffer, parg->count);
1462 if (n != parg->count) {
1467 case CHR_IOCTL_PP_EPP_WRITE:
1468 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1469 struct ParallelIOArg *parg = arg;
1470 int n = write(fd, parg->buffer, parg->count);
1471 if (n != parg->count) {
1482 static void pp_close(CharDriverState *chr)
1484 ParallelCharDriver *drv = chr->opaque;
1487 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1488 ioctl(fd, PPRELEASE);
1491 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1494 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1496 CharDriverState *chr;
1497 ParallelCharDriver *drv;
1499 if (ioctl(fd, PPCLAIM) < 0) {
1504 drv = g_malloc0(sizeof(ParallelCharDriver));
1506 drv->mode = IEEE1284_MODE_COMPAT;
1508 chr = g_malloc0(sizeof(CharDriverState));
1509 chr->chr_write = null_chr_write;
1510 chr->chr_ioctl = pp_ioctl;
1511 chr->chr_close = pp_close;
1516 #endif /* __linux__ */
1518 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1520 #define HAVE_CHARDEV_PARPORT 1
1522 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1524 int fd = (int)(intptr_t)chr->opaque;
1528 case CHR_IOCTL_PP_READ_DATA:
1529 if (ioctl(fd, PPIGDATA, &b) < 0)
1531 *(uint8_t *)arg = b;
1533 case CHR_IOCTL_PP_WRITE_DATA:
1534 b = *(uint8_t *)arg;
1535 if (ioctl(fd, PPISDATA, &b) < 0)
1538 case CHR_IOCTL_PP_READ_CONTROL:
1539 if (ioctl(fd, PPIGCTRL, &b) < 0)
1541 *(uint8_t *)arg = b;
1543 case CHR_IOCTL_PP_WRITE_CONTROL:
1544 b = *(uint8_t *)arg;
1545 if (ioctl(fd, PPISCTRL, &b) < 0)
1548 case CHR_IOCTL_PP_READ_STATUS:
1549 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1551 *(uint8_t *)arg = b;
1559 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1561 CharDriverState *chr;
1563 chr = g_malloc0(sizeof(CharDriverState));
1564 chr->opaque = (void *)(intptr_t)fd;
1565 chr->chr_write = null_chr_write;
1566 chr->chr_ioctl = pp_ioctl;
1567 chr->explicit_be_open = true;
1576 HANDLE hcom, hrecv, hsend;
1577 OVERLAPPED orecv, osend;
1584 HANDLE hInputReadyEvent;
1585 HANDLE hInputDoneEvent;
1586 HANDLE hInputThread;
1587 uint8_t win_stdio_buf;
1588 } WinStdioCharState;
1590 #define NSENDBUF 2048
1591 #define NRECVBUF 2048
1592 #define MAXCONNECT 1
1593 #define NTIMEOUT 5000
1595 static int win_chr_poll(void *opaque);
1596 static int win_chr_pipe_poll(void *opaque);
1598 static void win_chr_close(CharDriverState *chr)
1600 WinCharState *s = chr->opaque;
1603 CloseHandle(s->hsend);
1607 CloseHandle(s->hrecv);
1611 CloseHandle(s->hcom);
1615 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1617 qemu_del_polling_cb(win_chr_poll, chr);
1619 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1622 static int win_chr_init(CharDriverState *chr, const char *filename)
1624 WinCharState *s = chr->opaque;
1626 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1631 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1633 fprintf(stderr, "Failed CreateEvent\n");
1636 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1638 fprintf(stderr, "Failed CreateEvent\n");
1642 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1643 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1644 if (s->hcom == INVALID_HANDLE_VALUE) {
1645 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1650 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1651 fprintf(stderr, "Failed SetupComm\n");
1655 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1656 size = sizeof(COMMCONFIG);
1657 GetDefaultCommConfig(filename, &comcfg, &size);
1658 comcfg.dcb.DCBlength = sizeof(DCB);
1659 CommConfigDialog(filename, NULL, &comcfg);
1661 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1662 fprintf(stderr, "Failed SetCommState\n");
1666 if (!SetCommMask(s->hcom, EV_ERR)) {
1667 fprintf(stderr, "Failed SetCommMask\n");
1671 cto.ReadIntervalTimeout = MAXDWORD;
1672 if (!SetCommTimeouts(s->hcom, &cto)) {
1673 fprintf(stderr, "Failed SetCommTimeouts\n");
1677 if (!ClearCommError(s->hcom, &err, &comstat)) {
1678 fprintf(stderr, "Failed ClearCommError\n");
1681 qemu_add_polling_cb(win_chr_poll, chr);
1689 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1691 WinCharState *s = chr->opaque;
1692 DWORD len, ret, size, err;
1695 ZeroMemory(&s->osend, sizeof(s->osend));
1696 s->osend.hEvent = s->hsend;
1699 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1701 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1703 err = GetLastError();
1704 if (err == ERROR_IO_PENDING) {
1705 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1723 static int win_chr_read_poll(CharDriverState *chr)
1725 WinCharState *s = chr->opaque;
1727 s->max_size = qemu_chr_be_can_write(chr);
1731 static void win_chr_readfile(CharDriverState *chr)
1733 WinCharState *s = chr->opaque;
1735 uint8_t buf[READ_BUF_LEN];
1738 ZeroMemory(&s->orecv, sizeof(s->orecv));
1739 s->orecv.hEvent = s->hrecv;
1740 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1742 err = GetLastError();
1743 if (err == ERROR_IO_PENDING) {
1744 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1749 qemu_chr_be_write(chr, buf, size);
1753 static void win_chr_read(CharDriverState *chr)
1755 WinCharState *s = chr->opaque;
1757 if (s->len > s->max_size)
1758 s->len = s->max_size;
1762 win_chr_readfile(chr);
1765 static int win_chr_poll(void *opaque)
1767 CharDriverState *chr = opaque;
1768 WinCharState *s = chr->opaque;
1772 ClearCommError(s->hcom, &comerr, &status);
1773 if (status.cbInQue > 0) {
1774 s->len = status.cbInQue;
1775 win_chr_read_poll(chr);
1782 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1784 CharDriverState *chr;
1787 chr = g_malloc0(sizeof(CharDriverState));
1788 s = g_malloc0(sizeof(WinCharState));
1790 chr->chr_write = win_chr_write;
1791 chr->chr_close = win_chr_close;
1793 if (win_chr_init(chr, filename) < 0) {
1801 static int win_chr_pipe_poll(void *opaque)
1803 CharDriverState *chr = opaque;
1804 WinCharState *s = chr->opaque;
1807 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1810 win_chr_read_poll(chr);
1817 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1819 WinCharState *s = chr->opaque;
1827 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1829 fprintf(stderr, "Failed CreateEvent\n");
1832 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1834 fprintf(stderr, "Failed CreateEvent\n");
1838 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1839 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1840 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1842 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1843 if (s->hcom == INVALID_HANDLE_VALUE) {
1844 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1849 ZeroMemory(&ov, sizeof(ov));
1850 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1851 ret = ConnectNamedPipe(s->hcom, &ov);
1853 fprintf(stderr, "Failed ConnectNamedPipe\n");
1857 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1859 fprintf(stderr, "Failed GetOverlappedResult\n");
1861 CloseHandle(ov.hEvent);
1868 CloseHandle(ov.hEvent);
1871 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1880 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1882 const char *filename = opts->device;
1883 CharDriverState *chr;
1886 chr = g_malloc0(sizeof(CharDriverState));
1887 s = g_malloc0(sizeof(WinCharState));
1889 chr->chr_write = win_chr_write;
1890 chr->chr_close = win_chr_close;
1892 if (win_chr_pipe_init(chr, filename) < 0) {
1900 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1902 CharDriverState *chr;
1905 chr = g_malloc0(sizeof(CharDriverState));
1906 s = g_malloc0(sizeof(WinCharState));
1909 chr->chr_write = win_chr_write;
1913 static CharDriverState *qemu_chr_open_win_con(void)
1915 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1918 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1920 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1927 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1937 static void win_stdio_wait_func(void *opaque)
1939 CharDriverState *chr = opaque;
1940 WinStdioCharState *stdio = chr->opaque;
1941 INPUT_RECORD buf[4];
1946 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1950 /* Avoid error storm */
1951 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1955 for (i = 0; i < dwSize; i++) {
1956 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
1958 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
1960 if (kev->uChar.AsciiChar != 0) {
1961 for (j = 0; j < kev->wRepeatCount; j++) {
1962 if (qemu_chr_be_can_write(chr)) {
1963 uint8_t c = kev->uChar.AsciiChar;
1964 qemu_chr_be_write(chr, &c, 1);
1972 static DWORD WINAPI win_stdio_thread(LPVOID param)
1974 CharDriverState *chr = param;
1975 WinStdioCharState *stdio = chr->opaque;
1981 /* Wait for one byte */
1982 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
1984 /* Exit in case of error, continue if nothing read */
1992 /* Some terminal emulator returns \r\n for Enter, just pass \n */
1993 if (stdio->win_stdio_buf == '\r') {
1997 /* Signal the main thread and wait until the byte was eaten */
1998 if (!SetEvent(stdio->hInputReadyEvent)) {
2001 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2007 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2011 static void win_stdio_thread_wait_func(void *opaque)
2013 CharDriverState *chr = opaque;
2014 WinStdioCharState *stdio = chr->opaque;
2016 if (qemu_chr_be_can_write(chr)) {
2017 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2020 SetEvent(stdio->hInputDoneEvent);
2023 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2025 WinStdioCharState *stdio = chr->opaque;
2028 GetConsoleMode(stdio->hStdIn, &dwMode);
2031 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2033 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2037 static void win_stdio_close(CharDriverState *chr)
2039 WinStdioCharState *stdio = chr->opaque;
2041 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2042 CloseHandle(stdio->hInputReadyEvent);
2044 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2045 CloseHandle(stdio->hInputDoneEvent);
2047 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2048 TerminateThread(stdio->hInputThread, 0);
2051 g_free(chr->opaque);
2055 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2057 CharDriverState *chr;
2058 WinStdioCharState *stdio;
2062 chr = g_malloc0(sizeof(CharDriverState));
2063 stdio = g_malloc0(sizeof(WinStdioCharState));
2065 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2066 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2067 fprintf(stderr, "cannot open stdio: invalid handle\n");
2071 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2073 chr->opaque = stdio;
2074 chr->chr_write = win_stdio_write;
2075 chr->chr_close = win_stdio_close;
2078 if (qemu_add_wait_object(stdio->hStdIn,
2079 win_stdio_wait_func, chr)) {
2080 fprintf(stderr, "qemu_add_wait_object: failed\n");
2085 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2086 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2087 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2090 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2091 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2092 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2093 fprintf(stderr, "cannot create stdio thread or event\n");
2096 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2097 win_stdio_thread_wait_func, chr)) {
2098 fprintf(stderr, "qemu_add_wait_object: failed\n");
2102 dwMode |= ENABLE_LINE_INPUT;
2105 /* set the terminal in raw mode */
2106 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2107 dwMode |= ENABLE_PROCESSED_INPUT;
2110 SetConsoleMode(stdio->hStdIn, dwMode);
2112 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2113 qemu_chr_fe_set_echo(chr, false);
2117 #endif /* !_WIN32 */
2120 /***********************************************************/
2121 /* UDP Net console */
2127 uint8_t buf[READ_BUF_LEN];
2133 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2135 NetCharDriver *s = chr->opaque;
2136 gsize bytes_written;
2139 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2140 if (status == G_IO_STATUS_EOF) {
2142 } else if (status != G_IO_STATUS_NORMAL) {
2146 return bytes_written;
2149 static int udp_chr_read_poll(void *opaque)
2151 CharDriverState *chr = opaque;
2152 NetCharDriver *s = chr->opaque;
2154 s->max_size = qemu_chr_be_can_write(chr);
2156 /* If there were any stray characters in the queue process them
2159 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2160 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2162 s->max_size = qemu_chr_be_can_write(chr);
2167 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2169 CharDriverState *chr = opaque;
2170 NetCharDriver *s = chr->opaque;
2171 gsize bytes_read = 0;
2174 if (s->max_size == 0) {
2177 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2179 s->bufcnt = bytes_read;
2180 s->bufptr = s->bufcnt;
2181 if (status != G_IO_STATUS_NORMAL) {
2183 io_remove_watch_poll(s->tag);
2190 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2191 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2193 s->max_size = qemu_chr_be_can_write(chr);
2199 static void udp_chr_update_read_handler(CharDriverState *chr)
2201 NetCharDriver *s = chr->opaque;
2204 io_remove_watch_poll(s->tag);
2209 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2213 static void udp_chr_close(CharDriverState *chr)
2215 NetCharDriver *s = chr->opaque;
2217 io_remove_watch_poll(s->tag);
2221 g_io_channel_unref(s->chan);
2225 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2228 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2230 CharDriverState *chr = NULL;
2231 NetCharDriver *s = NULL;
2233 chr = g_malloc0(sizeof(CharDriverState));
2234 s = g_malloc0(sizeof(NetCharDriver));
2237 s->chan = io_channel_from_socket(s->fd);
2241 chr->chr_write = udp_chr_write;
2242 chr->chr_update_read_handler = udp_chr_update_read_handler;
2243 chr->chr_close = udp_chr_close;
2244 /* be isn't opened until we get a connection */
2245 chr->explicit_be_open = true;
2249 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2251 Error *local_err = NULL;
2254 fd = inet_dgram_opts(opts, &local_err);
2256 qerror_report_err(local_err);
2257 error_free(local_err);
2260 return qemu_chr_open_udp_fd(fd);
2263 /***********************************************************/
2264 /* TCP Net console */
2268 GIOChannel *chan, *listen_chan;
2269 guint tag, listen_tag;
2279 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2281 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2283 TCPCharDriver *s = chr->opaque;
2285 return io_channel_send(s->chan, buf, len);
2287 /* XXX: indicate an error ? */
2292 static int tcp_chr_read_poll(void *opaque)
2294 CharDriverState *chr = opaque;
2295 TCPCharDriver *s = chr->opaque;
2298 s->max_size = qemu_chr_be_can_write(chr);
2303 #define IAC_BREAK 243
2304 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2306 uint8_t *buf, int *size)
2308 /* Handle any telnet client's basic IAC options to satisfy char by
2309 * char mode with no echo. All IAC options will be removed from
2310 * the buf and the do_telnetopt variable will be used to track the
2311 * state of the width of the IAC information.
2313 * IAC commands come in sets of 3 bytes with the exception of the
2314 * "IAC BREAK" command and the double IAC.
2320 for (i = 0; i < *size; i++) {
2321 if (s->do_telnetopt > 1) {
2322 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2323 /* Double IAC means send an IAC */
2327 s->do_telnetopt = 1;
2329 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2330 /* Handle IAC break commands by sending a serial break */
2331 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2336 if (s->do_telnetopt >= 4) {
2337 s->do_telnetopt = 1;
2340 if ((unsigned char)buf[i] == IAC) {
2341 s->do_telnetopt = 2;
2352 static int tcp_get_msgfd(CharDriverState *chr)
2354 TCPCharDriver *s = chr->opaque;
2361 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2363 TCPCharDriver *s = chr->opaque;
2364 struct cmsghdr *cmsg;
2366 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2369 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2370 cmsg->cmsg_level != SOL_SOCKET ||
2371 cmsg->cmsg_type != SCM_RIGHTS)
2374 fd = *((int *)CMSG_DATA(cmsg));
2378 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2381 #ifndef MSG_CMSG_CLOEXEC
2382 qemu_set_cloexec(fd);
2390 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2392 TCPCharDriver *s = chr->opaque;
2393 struct msghdr msg = { NULL, };
2394 struct iovec iov[1];
2396 struct cmsghdr cmsg;
2397 char control[CMSG_SPACE(sizeof(int))];
2402 iov[0].iov_base = buf;
2403 iov[0].iov_len = len;
2407 msg.msg_control = &msg_control;
2408 msg.msg_controllen = sizeof(msg_control);
2410 #ifdef MSG_CMSG_CLOEXEC
2411 flags |= MSG_CMSG_CLOEXEC;
2413 ret = recvmsg(s->fd, &msg, flags);
2414 if (ret > 0 && s->is_unix) {
2415 unix_process_msgfd(chr, &msg);
2421 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2423 TCPCharDriver *s = chr->opaque;
2424 return qemu_recv(s->fd, buf, len, 0);
2428 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2430 TCPCharDriver *s = chr->opaque;
2431 return g_io_create_watch(s->chan, cond);
2434 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2436 CharDriverState *chr = opaque;
2437 TCPCharDriver *s = chr->opaque;
2438 uint8_t buf[READ_BUF_LEN];
2441 if (!s->connected || s->max_size <= 0) {
2445 if (len > s->max_size)
2447 size = tcp_chr_recv(chr, (void *)buf, len);
2449 /* connection closed */
2451 if (s->listen_chan) {
2452 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2455 io_remove_watch_poll(s->tag);
2458 g_io_channel_unref(s->chan);
2462 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2463 } else if (size > 0) {
2464 if (s->do_telnetopt)
2465 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2467 qemu_chr_be_write(chr, buf, size);
2474 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2476 return qemu_chr_open_fd(eventfd, eventfd);
2480 static void tcp_chr_connect(void *opaque)
2482 CharDriverState *chr = opaque;
2483 TCPCharDriver *s = chr->opaque;
2487 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2489 qemu_chr_be_generic_open(chr);
2492 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2493 static void tcp_chr_telnet_init(int fd)
2496 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2497 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2498 send(fd, (char *)buf, 3, 0);
2499 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2500 send(fd, (char *)buf, 3, 0);
2501 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2502 send(fd, (char *)buf, 3, 0);
2503 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2504 send(fd, (char *)buf, 3, 0);
2507 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2509 TCPCharDriver *s = chr->opaque;
2513 qemu_set_nonblock(fd);
2515 socket_set_nodelay(fd);
2517 s->chan = io_channel_from_socket(fd);
2518 if (s->listen_tag) {
2519 g_source_remove(s->listen_tag);
2522 tcp_chr_connect(chr);
2527 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2529 CharDriverState *chr = opaque;
2530 TCPCharDriver *s = chr->opaque;
2531 struct sockaddr_in saddr;
2533 struct sockaddr_un uaddr;
2535 struct sockaddr *addr;
2542 len = sizeof(uaddr);
2543 addr = (struct sockaddr *)&uaddr;
2547 len = sizeof(saddr);
2548 addr = (struct sockaddr *)&saddr;
2550 fd = qemu_accept(s->listen_fd, addr, &len);
2551 if (fd < 0 && errno != EINTR) {
2554 } else if (fd >= 0) {
2555 if (s->do_telnetopt)
2556 tcp_chr_telnet_init(fd);
2560 if (tcp_chr_add_client(chr, fd) < 0)
2566 static void tcp_chr_close(CharDriverState *chr)
2568 TCPCharDriver *s = chr->opaque;
2571 io_remove_watch_poll(s->tag);
2575 g_io_channel_unref(s->chan);
2579 if (s->listen_fd >= 0) {
2580 if (s->listen_tag) {
2581 g_source_remove(s->listen_tag);
2584 if (s->listen_chan) {
2585 g_io_channel_unref(s->listen_chan);
2587 closesocket(s->listen_fd);
2590 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2593 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2594 bool is_listen, bool is_telnet,
2595 bool is_waitconnect,
2598 CharDriverState *chr = NULL;
2599 TCPCharDriver *s = NULL;
2600 char host[NI_MAXHOST], serv[NI_MAXSERV];
2601 const char *left = "", *right = "";
2602 struct sockaddr_storage ss;
2603 socklen_t ss_len = sizeof(ss);
2605 memset(&ss, 0, ss_len);
2606 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2607 error_setg_errno(errp, errno, "getsockname");
2611 chr = g_malloc0(sizeof(CharDriverState));
2612 s = g_malloc0(sizeof(TCPCharDriver));
2619 chr->filename = g_malloc(256);
2620 switch (ss.ss_family) {
2624 snprintf(chr->filename, 256, "unix:%s%s",
2625 ((struct sockaddr_un *)(&ss))->sun_path,
2626 is_listen ? ",server" : "");
2634 s->do_nodelay = do_nodelay;
2635 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2636 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2637 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2638 is_telnet ? "telnet" : "tcp",
2639 left, host, right, serv,
2640 is_listen ? ",server" : "");
2645 chr->chr_write = tcp_chr_write;
2646 chr->chr_close = tcp_chr_close;
2647 chr->get_msgfd = tcp_get_msgfd;
2648 chr->chr_add_client = tcp_chr_add_client;
2649 chr->chr_add_watch = tcp_chr_add_watch;
2650 /* be isn't opened until we get a connection */
2651 chr->explicit_be_open = true;
2655 s->listen_chan = io_channel_from_socket(s->listen_fd);
2656 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2658 s->do_telnetopt = 1;
2663 socket_set_nodelay(fd);
2664 s->chan = io_channel_from_socket(s->fd);
2665 tcp_chr_connect(chr);
2668 if (is_listen && is_waitconnect) {
2669 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2671 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2672 qemu_set_nonblock(s->listen_fd);
2677 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2679 CharDriverState *chr = NULL;
2680 Error *local_err = NULL;
2683 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2684 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2685 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2686 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2687 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2691 fd = unix_listen_opts(opts, &local_err);
2693 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2697 fd = inet_listen_opts(opts, 0, &local_err);
2699 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2706 if (!is_waitconnect)
2707 qemu_set_nonblock(fd);
2709 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2710 is_waitconnect, &local_err);
2711 if (error_is_set(&local_err)) {
2719 qerror_report_err(local_err);
2720 error_free(local_err);
2726 g_free(chr->opaque);
2732 /*********************************************************/
2733 /* Ring buffer chardev */
2740 } RingBufCharDriver;
2742 static size_t ringbuf_count(const CharDriverState *chr)
2744 const RingBufCharDriver *d = chr->opaque;
2746 return d->prod - d->cons;
2749 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2751 RingBufCharDriver *d = chr->opaque;
2754 if (!buf || (len < 0)) {
2758 for (i = 0; i < len; i++ ) {
2759 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2760 if (d->prod - d->cons > d->size) {
2761 d->cons = d->prod - d->size;
2768 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2770 RingBufCharDriver *d = chr->opaque;
2773 for (i = 0; i < len && d->cons != d->prod; i++) {
2774 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2780 static void ringbuf_chr_close(struct CharDriverState *chr)
2782 RingBufCharDriver *d = chr->opaque;
2789 static CharDriverState *qemu_chr_open_memory(ChardevMemory *opts,
2792 CharDriverState *chr;
2793 RingBufCharDriver *d;
2795 chr = g_malloc0(sizeof(CharDriverState));
2796 d = g_malloc(sizeof(*d));
2798 d->size = opts->has_size ? opts->size : 65536;
2800 /* The size must be power of 2 */
2801 if (d->size & (d->size - 1)) {
2802 error_setg(errp, "size of memory chardev must be power of two");
2808 d->cbuf = g_malloc0(d->size);
2811 chr->chr_write = ringbuf_chr_write;
2812 chr->chr_close = ringbuf_chr_close;
2822 static bool chr_is_ringbuf(const CharDriverState *chr)
2824 return chr->chr_write == ringbuf_chr_write;
2827 void qmp_ringbuf_write(const char *device, const char *data,
2828 bool has_format, enum DataFormat format,
2831 CharDriverState *chr;
2832 const uint8_t *write_data;
2836 chr = qemu_chr_find(device);
2838 error_setg(errp, "Device '%s' not found", device);
2842 if (!chr_is_ringbuf(chr)) {
2843 error_setg(errp,"%s is not a ringbuf device", device);
2847 if (has_format && (format == DATA_FORMAT_BASE64)) {
2848 write_data = g_base64_decode(data, &write_count);
2850 write_data = (uint8_t *)data;
2851 write_count = strlen(data);
2854 ret = ringbuf_chr_write(chr, write_data, write_count);
2856 if (write_data != (uint8_t *)data) {
2857 g_free((void *)write_data);
2861 error_setg(errp, "Failed to write to device %s", device);
2866 char *qmp_ringbuf_read(const char *device, int64_t size,
2867 bool has_format, enum DataFormat format,
2870 CharDriverState *chr;
2875 chr = qemu_chr_find(device);
2877 error_setg(errp, "Device '%s' not found", device);
2881 if (!chr_is_ringbuf(chr)) {
2882 error_setg(errp,"%s is not a ringbuf device", device);
2887 error_setg(errp, "size must be greater than zero");
2891 count = ringbuf_count(chr);
2892 size = size > count ? count : size;
2893 read_data = g_malloc(size + 1);
2895 ringbuf_chr_read(chr, read_data, size);
2897 if (has_format && (format == DATA_FORMAT_BASE64)) {
2898 data = g_base64_encode(read_data, size);
2902 * FIXME should read only complete, valid UTF-8 characters up
2903 * to @size bytes. Invalid sequences should be replaced by a
2904 * suitable replacement character. Except when (and only
2905 * when) ring buffer lost characters since last read, initial
2906 * continuation characters should be dropped.
2908 read_data[size] = 0;
2909 data = (char *)read_data;
2915 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2917 char host[65], port[33], width[8], height[8];
2921 Error *local_err = NULL;
2923 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2924 if (error_is_set(&local_err)) {
2925 qerror_report_err(local_err);
2926 error_free(local_err);
2930 if (strstart(filename, "mon:", &p)) {
2932 qemu_opt_set(opts, "mux", "on");
2933 if (strcmp(filename, "stdio") == 0) {
2934 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
2935 * but pass it to the guest. Handle this only for compat syntax,
2936 * for -chardev syntax we have special option for this.
2937 * This is what -nographic did, redirecting+muxing serial+monitor
2938 * to stdio causing Ctrl+C to be passed to guest. */
2939 qemu_opt_set(opts, "signal", "off");
2943 if (strcmp(filename, "null") == 0 ||
2944 strcmp(filename, "pty") == 0 ||
2945 strcmp(filename, "msmouse") == 0 ||
2946 strcmp(filename, "braille") == 0 ||
2947 strcmp(filename, "stdio") == 0) {
2948 qemu_opt_set(opts, "backend", filename);
2951 if (strstart(filename, "vc", &p)) {
2952 qemu_opt_set(opts, "backend", "vc");
2954 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2956 qemu_opt_set(opts, "width", width);
2957 qemu_opt_set(opts, "height", height);
2958 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2960 qemu_opt_set(opts, "cols", width);
2961 qemu_opt_set(opts, "rows", height);
2968 if (strcmp(filename, "con:") == 0) {
2969 qemu_opt_set(opts, "backend", "console");
2972 if (strstart(filename, "COM", NULL)) {
2973 qemu_opt_set(opts, "backend", "serial");
2974 qemu_opt_set(opts, "path", filename);
2977 if (strstart(filename, "file:", &p)) {
2978 qemu_opt_set(opts, "backend", "file");
2979 qemu_opt_set(opts, "path", p);
2982 if (strstart(filename, "pipe:", &p)) {
2983 qemu_opt_set(opts, "backend", "pipe");
2984 qemu_opt_set(opts, "path", p);
2987 if (strstart(filename, "tcp:", &p) ||
2988 strstart(filename, "telnet:", &p)) {
2989 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2991 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2994 qemu_opt_set(opts, "backend", "socket");
2995 qemu_opt_set(opts, "host", host);
2996 qemu_opt_set(opts, "port", port);
2997 if (p[pos] == ',') {
2998 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3001 if (strstart(filename, "telnet:", &p))
3002 qemu_opt_set(opts, "telnet", "on");
3005 if (strstart(filename, "udp:", &p)) {
3006 qemu_opt_set(opts, "backend", "udp");
3007 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3009 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3013 qemu_opt_set(opts, "host", host);
3014 qemu_opt_set(opts, "port", port);
3015 if (p[pos] == '@') {
3017 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3019 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3023 qemu_opt_set(opts, "localaddr", host);
3024 qemu_opt_set(opts, "localport", port);
3028 if (strstart(filename, "unix:", &p)) {
3029 qemu_opt_set(opts, "backend", "socket");
3030 if (qemu_opts_do_parse(opts, p, "path") != 0)
3034 if (strstart(filename, "/dev/parport", NULL) ||
3035 strstart(filename, "/dev/ppi", NULL)) {
3036 qemu_opt_set(opts, "backend", "parport");
3037 qemu_opt_set(opts, "path", filename);
3040 if (strstart(filename, "/dev/", NULL)) {
3041 qemu_opt_set(opts, "backend", "tty");
3042 qemu_opt_set(opts, "path", filename);
3047 qemu_opts_del(opts);
3051 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3054 const char *path = qemu_opt_get(opts, "path");
3057 error_setg(errp, "chardev: file: no filename given");
3060 backend->file = g_new0(ChardevFile, 1);
3061 backend->file->out = g_strdup(path);
3064 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3067 backend->stdio = g_new0(ChardevStdio, 1);
3068 backend->stdio->has_signal = true;
3069 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3072 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3075 const char *device = qemu_opt_get(opts, "path");
3077 if (device == NULL) {
3078 error_setg(errp, "chardev: serial/tty: no device path given");
3081 backend->serial = g_new0(ChardevHostdev, 1);
3082 backend->serial->device = g_strdup(device);
3085 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3088 const char *device = qemu_opt_get(opts, "path");
3090 if (device == NULL) {
3091 error_setg(errp, "chardev: parallel: no device path given");
3094 backend->parallel = g_new0(ChardevHostdev, 1);
3095 backend->parallel->device = g_strdup(device);
3098 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3101 const char *device = qemu_opt_get(opts, "path");
3103 if (device == NULL) {
3104 error_setg(errp, "chardev: pipe: no device path given");
3107 backend->pipe = g_new0(ChardevHostdev, 1);
3108 backend->pipe->device = g_strdup(device);
3111 static void qemu_chr_parse_memory(QemuOpts *opts, ChardevBackend *backend,
3116 backend->memory = g_new0(ChardevMemory, 1);
3118 val = qemu_opt_get_number(opts, "size", 0);
3120 backend->memory->has_size = true;
3121 backend->memory->size = val;
3125 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3128 const char *chardev = qemu_opt_get(opts, "chardev");
3130 if (chardev == NULL) {
3131 error_setg(errp, "chardev: mux: no chardev given");
3134 backend->mux = g_new0(ChardevMux, 1);
3135 backend->mux->chardev = g_strdup(chardev);
3138 typedef struct CharDriver {
3141 CharDriverState *(*open)(QemuOpts *opts);
3142 /* new, qapi-based */
3143 ChardevBackendKind kind;
3144 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3147 static GSList *backends;
3149 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3153 s = g_malloc0(sizeof(*s));
3154 s->name = g_strdup(name);
3157 backends = g_slist_append(backends, s);
3160 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3161 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3165 s = g_malloc0(sizeof(*s));
3166 s->name = g_strdup(name);
3170 backends = g_slist_append(backends, s);
3173 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3174 void (*init)(struct CharDriverState *s),
3178 CharDriverState *chr;
3181 if (qemu_opts_id(opts) == NULL) {
3182 error_setg(errp, "chardev: no id specified");
3186 if (qemu_opt_get(opts, "backend") == NULL) {
3187 error_setg(errp, "chardev: \"%s\" missing backend",
3188 qemu_opts_id(opts));
3191 for (i = backends; i; i = i->next) {
3194 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3199 error_setg(errp, "chardev: backend \"%s\" not found",
3200 qemu_opt_get(opts, "backend"));
3205 /* using new, qapi init */
3206 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3207 ChardevReturn *ret = NULL;
3208 const char *id = qemu_opts_id(opts);
3211 if (qemu_opt_get_bool(opts, "mux", 0)) {
3212 bid = g_strdup_printf("%s-base", id);
3216 backend->kind = cd->kind;
3218 cd->parse(opts, backend, errp);
3219 if (error_is_set(errp)) {
3223 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3224 if (error_is_set(errp)) {
3229 qapi_free_ChardevBackend(backend);
3230 qapi_free_ChardevReturn(ret);
3231 backend = g_new0(ChardevBackend, 1);
3232 backend->mux = g_new0(ChardevMux, 1);
3233 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3234 backend->mux->chardev = g_strdup(bid);
3235 ret = qmp_chardev_add(id, backend, errp);
3236 assert(!error_is_set(errp));
3239 chr = qemu_chr_find(id);
3243 qapi_free_ChardevBackend(backend);
3244 qapi_free_ChardevReturn(ret);
3249 chr = cd->open(opts);
3251 error_setg(errp, "chardev: opening backend \"%s\" failed",
3252 qemu_opt_get(opts, "backend"));
3257 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3259 /* if we didn't create the chardev via qmp_chardev_add, we
3260 * need to send the OPENED event here
3262 if (!chr->explicit_be_open) {
3263 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3265 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3267 if (qemu_opt_get_bool(opts, "mux", 0)) {
3268 CharDriverState *base = chr;
3269 int len = strlen(qemu_opts_id(opts)) + 6;
3270 base->label = g_malloc(len);
3271 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3272 chr = qemu_chr_open_mux(base);
3273 chr->filename = base->filename;
3274 chr->avail_connections = MAX_MUX;
3275 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3277 chr->avail_connections = 1;
3279 chr->label = g_strdup(qemu_opts_id(opts));
3284 qemu_opts_del(opts);
3288 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3291 CharDriverState *chr;
3295 if (strstart(filename, "chardev:", &p)) {
3296 return qemu_chr_find(p);
3299 opts = qemu_chr_parse_compat(label, filename);
3303 chr = qemu_chr_new_from_opts(opts, init, &err);
3304 if (error_is_set(&err)) {
3305 fprintf(stderr, "%s\n", error_get_pretty(err));
3308 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3309 qemu_chr_fe_claim_no_fail(chr);
3310 monitor_init(chr, MONITOR_USE_READLINE);
3315 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3317 if (chr->chr_set_echo) {
3318 chr->chr_set_echo(chr, echo);
3322 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3324 if (chr->fe_open == fe_open) {
3327 chr->fe_open = fe_open;
3328 if (chr->chr_set_fe_open) {
3329 chr->chr_set_fe_open(chr, fe_open);
3333 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3334 GIOFunc func, void *user_data)
3339 if (s->chr_add_watch == NULL) {
3343 src = s->chr_add_watch(s, cond);
3344 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3345 tag = g_source_attach(src, NULL);
3346 g_source_unref(src);
3351 int qemu_chr_fe_claim(CharDriverState *s)
3353 if (s->avail_connections < 1) {
3356 s->avail_connections--;
3360 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3362 if (qemu_chr_fe_claim(s) != 0) {
3363 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3364 __func__, s->label);
3369 void qemu_chr_fe_release(CharDriverState *s)
3371 s->avail_connections++;
3374 void qemu_chr_delete(CharDriverState *chr)
3376 QTAILQ_REMOVE(&chardevs, chr, next);
3377 if (chr->chr_close) {
3378 chr->chr_close(chr);
3380 g_free(chr->filename);
3383 qemu_opts_del(chr->opts);
3388 ChardevInfoList *qmp_query_chardev(Error **errp)
3390 ChardevInfoList *chr_list = NULL;
3391 CharDriverState *chr;
3393 QTAILQ_FOREACH(chr, &chardevs, next) {
3394 ChardevInfoList *info = g_malloc0(sizeof(*info));
3395 info->value = g_malloc0(sizeof(*info->value));
3396 info->value->label = g_strdup(chr->label);
3397 info->value->filename = g_strdup(chr->filename);
3399 info->next = chr_list;
3406 CharDriverState *qemu_chr_find(const char *name)
3408 CharDriverState *chr;
3410 QTAILQ_FOREACH(chr, &chardevs, next) {
3411 if (strcmp(chr->label, name) != 0)
3418 /* Get a character (serial) device interface. */
3419 CharDriverState *qemu_char_get_next_serial(void)
3421 static int next_serial;
3422 CharDriverState *chr;
3424 /* FIXME: This function needs to go away: use chardev properties! */
3426 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3427 chr = serial_hds[next_serial++];
3428 qemu_chr_fe_claim_no_fail(chr);
3434 QemuOptsList qemu_chardev_opts = {
3436 .implied_opt_name = "backend",
3437 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3441 .type = QEMU_OPT_STRING,
3444 .type = QEMU_OPT_STRING,
3447 .type = QEMU_OPT_STRING,
3450 .type = QEMU_OPT_STRING,
3452 .name = "localaddr",
3453 .type = QEMU_OPT_STRING,
3455 .name = "localport",
3456 .type = QEMU_OPT_STRING,
3459 .type = QEMU_OPT_NUMBER,
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_BOOL,
3480 .type = QEMU_OPT_NUMBER,
3483 .type = QEMU_OPT_NUMBER,
3486 .type = QEMU_OPT_NUMBER,
3489 .type = QEMU_OPT_NUMBER,
3492 .type = QEMU_OPT_BOOL,
3495 .type = QEMU_OPT_BOOL,
3498 .type = QEMU_OPT_STRING,
3501 .type = QEMU_OPT_NUMBER,
3504 .type = QEMU_OPT_SIZE,
3507 .type = QEMU_OPT_STRING,
3509 { /* end of list */ }
3515 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3520 error_setg(errp, "input file not supported");
3524 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3525 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3526 if (out == INVALID_HANDLE_VALUE) {
3527 error_setg(errp, "open %s failed", file->out);
3530 return qemu_chr_open_win_file(out);
3533 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3536 return qemu_chr_open_win_path(serial->device);
3539 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3542 error_setg(errp, "character device backend type 'parallel' not supported");
3548 static int qmp_chardev_open_file_source(char *src, int flags,
3553 TFR(fd = qemu_open(src, flags, 0666));
3555 error_setg_file_open(errp, errno, src);
3560 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3562 int flags, in = -1, out = -1;
3564 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3565 out = qmp_chardev_open_file_source(file->out, flags, errp);
3566 if (error_is_set(errp)) {
3572 in = qmp_chardev_open_file_source(file->in, flags, errp);
3573 if (error_is_set(errp)) {
3579 return qemu_chr_open_fd(in, out);
3582 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3585 #ifdef HAVE_CHARDEV_TTY
3588 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3589 if (error_is_set(errp)) {
3592 qemu_set_nonblock(fd);
3593 return qemu_chr_open_tty_fd(fd);
3595 error_setg(errp, "character device backend type 'serial' not supported");
3600 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3603 #ifdef HAVE_CHARDEV_PARPORT
3606 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3607 if (error_is_set(errp)) {
3610 return qemu_chr_open_pp_fd(fd);
3612 error_setg(errp, "character device backend type 'parallel' not supported");
3619 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3622 SocketAddress *addr = sock->addr;
3623 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3624 bool is_listen = sock->has_server ? sock->server : true;
3625 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3626 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3630 fd = socket_listen(addr, errp);
3632 fd = socket_connect(addr, errp, NULL, NULL);
3634 if (error_is_set(errp)) {
3637 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3638 is_telnet, is_waitconnect, errp);
3641 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3646 fd = socket_dgram(udp->remote, udp->local, errp);
3647 if (error_is_set(errp)) {
3650 return qemu_chr_open_udp_fd(fd);
3653 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3656 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3657 CharDriverState *base, *chr = NULL;
3659 chr = qemu_chr_find(id);
3661 error_setg(errp, "Chardev '%s' already exists", id);
3666 switch (backend->kind) {
3667 case CHARDEV_BACKEND_KIND_FILE:
3668 chr = qmp_chardev_open_file(backend->file, errp);
3670 case CHARDEV_BACKEND_KIND_SERIAL:
3671 chr = qmp_chardev_open_serial(backend->serial, errp);
3673 case CHARDEV_BACKEND_KIND_PARALLEL:
3674 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3676 case CHARDEV_BACKEND_KIND_PIPE:
3677 chr = qemu_chr_open_pipe(backend->pipe);
3679 case CHARDEV_BACKEND_KIND_SOCKET:
3680 chr = qmp_chardev_open_socket(backend->socket, errp);
3682 case CHARDEV_BACKEND_KIND_UDP:
3683 chr = qmp_chardev_open_udp(backend->udp, errp);
3685 #ifdef HAVE_CHARDEV_TTY
3686 case CHARDEV_BACKEND_KIND_PTY:
3687 chr = qemu_chr_open_pty(id, ret);
3690 case CHARDEV_BACKEND_KIND_NULL:
3691 chr = qemu_chr_open_null();
3693 case CHARDEV_BACKEND_KIND_MUX:
3694 base = qemu_chr_find(backend->mux->chardev);
3696 error_setg(errp, "mux: base chardev %s not found",
3697 backend->mux->chardev);
3700 chr = qemu_chr_open_mux(base);
3702 case CHARDEV_BACKEND_KIND_MSMOUSE:
3703 chr = qemu_chr_open_msmouse();
3705 #ifdef CONFIG_BRLAPI
3706 case CHARDEV_BACKEND_KIND_BRAILLE:
3707 chr = chr_baum_init();
3710 case CHARDEV_BACKEND_KIND_STDIO:
3711 chr = qemu_chr_open_stdio(backend->stdio);
3714 case CHARDEV_BACKEND_KIND_CONSOLE:
3715 chr = qemu_chr_open_win_con();
3719 case CHARDEV_BACKEND_KIND_SPICEVMC:
3720 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3722 case CHARDEV_BACKEND_KIND_SPICEPORT:
3723 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3726 case CHARDEV_BACKEND_KIND_VC:
3727 chr = vc_init(backend->vc);
3729 case CHARDEV_BACKEND_KIND_MEMORY:
3730 chr = qemu_chr_open_memory(backend->memory, errp);
3733 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3737 if (chr == NULL && !error_is_set(errp)) {
3738 error_setg(errp, "Failed to create chardev");
3741 chr->label = g_strdup(id);
3742 chr->avail_connections =
3743 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3744 if (!chr->filename) {
3745 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
3747 if (!chr->explicit_be_open) {
3748 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3750 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3758 void qmp_chardev_remove(const char *id, Error **errp)
3760 CharDriverState *chr;
3762 chr = qemu_chr_find(id);
3764 error_setg(errp, "Chardev '%s' not found", id);
3767 if (chr->chr_can_read || chr->chr_read ||
3768 chr->chr_event || chr->handler_opaque) {
3769 error_setg(errp, "Chardev '%s' is busy", id);
3772 qemu_chr_delete(chr);
3775 static void register_types(void)
3777 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3778 register_char_driver("socket", qemu_chr_open_socket);
3779 register_char_driver("udp", qemu_chr_open_udp);
3780 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3781 qemu_chr_parse_memory);
3782 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3783 qemu_chr_parse_file_out);
3784 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3785 qemu_chr_parse_stdio);
3786 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3787 qemu_chr_parse_serial);
3788 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3789 qemu_chr_parse_serial);
3790 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3791 qemu_chr_parse_parallel);
3792 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3793 qemu_chr_parse_parallel);
3794 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3795 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3796 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3797 qemu_chr_parse_pipe);
3798 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
3799 qemu_chr_parse_mux);
3802 type_init(register_types);