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"
32 #include "hw/msmouse.h"
33 #include "qmp-commands.h"
43 #include <sys/times.h>
47 #include <sys/ioctl.h>
48 #include <sys/resource.h>
49 #include <sys/socket.h>
50 #include <netinet/in.h>
52 #include <arpa/inet.h>
55 #include <sys/select.h>
58 #if defined(__GLIBC__)
60 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
65 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
66 #include <dev/ppbus/ppi.h>
67 #include <dev/ppbus/ppbconf.h>
68 #elif defined(__DragonFly__)
69 #include <dev/misc/ppi/ppi.h>
70 #include <bus/ppbus/ppbconf.h>
76 #include <linux/ppdev.h>
77 #include <linux/parport.h>
81 #include <sys/ethernet.h>
82 #include <sys/sockio.h>
83 #include <netinet/arp.h>
84 #include <netinet/in.h>
85 #include <netinet/in_systm.h>
86 #include <netinet/ip.h>
87 #include <netinet/ip_icmp.h> // must come after ip.h
88 #include <netinet/udp.h>
89 #include <netinet/tcp.h>
97 #include "qemu/sockets.h"
98 #include "ui/qemu-spice.h"
100 #define READ_BUF_LEN 4096
102 /***********************************************************/
103 /* character device */
105 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
106 QTAILQ_HEAD_INITIALIZER(chardevs);
108 void qemu_chr_be_event(CharDriverState *s, int event)
110 /* Keep track if the char device is open */
112 case CHR_EVENT_OPENED:
115 case CHR_EVENT_CLOSED:
122 s->chr_event(s->handler_opaque, event);
125 static void qemu_chr_fire_open_event(void *opaque)
127 CharDriverState *s = opaque;
128 qemu_chr_be_event(s, CHR_EVENT_OPENED);
129 qemu_free_timer(s->open_timer);
130 s->open_timer = NULL;
133 void qemu_chr_generic_open(CharDriverState *s)
135 if (s->open_timer == NULL) {
136 s->open_timer = qemu_new_timer_ms(rt_clock,
137 qemu_chr_fire_open_event, s);
138 qemu_mod_timer(s->open_timer, qemu_get_clock_ms(rt_clock) - 1);
142 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
144 return s->chr_write(s, buf, len);
147 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
151 return s->chr_ioctl(s, cmd, arg);
154 int qemu_chr_be_can_write(CharDriverState *s)
156 if (!s->chr_can_read)
158 return s->chr_can_read(s->handler_opaque);
161 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
164 s->chr_read(s->handler_opaque, buf, len);
168 int qemu_chr_fe_get_msgfd(CharDriverState *s)
170 return s->get_msgfd ? s->get_msgfd(s) : -1;
173 int qemu_chr_add_client(CharDriverState *s, int fd)
175 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
178 void qemu_chr_accept_input(CharDriverState *s)
180 if (s->chr_accept_input)
181 s->chr_accept_input(s);
185 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
187 char buf[READ_BUF_LEN];
190 vsnprintf(buf, sizeof(buf), fmt, ap);
191 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
195 void qemu_chr_add_handlers(CharDriverState *s,
196 IOCanReadHandler *fd_can_read,
197 IOReadHandler *fd_read,
198 IOEventHandler *fd_event,
201 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
202 /* chr driver being released. */
203 ++s->avail_connections;
205 s->chr_can_read = fd_can_read;
206 s->chr_read = fd_read;
207 s->chr_event = fd_event;
208 s->handler_opaque = opaque;
209 if (s->chr_update_read_handler)
210 s->chr_update_read_handler(s);
212 /* We're connecting to an already opened device, so let's make sure we
213 also get the open event */
215 qemu_chr_generic_open(s);
219 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
224 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
226 CharDriverState *chr;
228 chr = g_malloc0(sizeof(CharDriverState));
229 chr->chr_write = null_chr_write;
233 /* MUX driver for serial I/O splitting */
235 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
236 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
238 IOCanReadHandler *chr_can_read[MAX_MUX];
239 IOReadHandler *chr_read[MAX_MUX];
240 IOEventHandler *chr_event[MAX_MUX];
241 void *ext_opaque[MAX_MUX];
242 CharDriverState *drv;
247 /* Intermediate input buffer allows to catch escape sequences even if the
248 currently active device is not accepting any input - but only until it
250 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
255 int64_t timestamps_start;
259 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
261 MuxDriver *d = chr->opaque;
263 if (!d->timestamps) {
264 ret = d->drv->chr_write(d->drv, buf, len);
269 for (i = 0; i < len; i++) {
275 ti = qemu_get_clock_ms(rt_clock);
276 if (d->timestamps_start == -1)
277 d->timestamps_start = ti;
278 ti -= d->timestamps_start;
280 snprintf(buf1, sizeof(buf1),
281 "[%02d:%02d:%02d.%03d] ",
286 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
289 ret += d->drv->chr_write(d->drv, buf+i, 1);
290 if (buf[i] == '\n') {
298 static const char * const mux_help[] = {
299 "% h print this help\n\r",
300 "% x exit emulator\n\r",
301 "% s save disk data back to file (if -snapshot)\n\r",
302 "% t toggle console timestamps\n\r"
303 "% b send break (magic sysrq)\n\r",
304 "% c switch between console and monitor\n\r",
309 int term_escape_char = 0x01; /* ctrl-a is used for escape */
310 static void mux_print_help(CharDriverState *chr)
313 char ebuf[15] = "Escape-Char";
314 char cbuf[50] = "\n\r";
316 if (term_escape_char > 0 && term_escape_char < 26) {
317 snprintf(cbuf, sizeof(cbuf), "\n\r");
318 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
320 snprintf(cbuf, sizeof(cbuf),
321 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
324 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
325 for (i = 0; mux_help[i] != NULL; i++) {
326 for (j=0; mux_help[i][j] != '\0'; j++) {
327 if (mux_help[i][j] == '%')
328 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
330 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
335 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
337 if (d->chr_event[mux_nr])
338 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
341 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
343 if (d->term_got_escape) {
344 d->term_got_escape = 0;
345 if (ch == term_escape_char)
354 const char *term = "QEMU: Terminated\n\r";
355 chr->chr_write(chr,(uint8_t *)term,strlen(term));
363 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
366 /* Switch to the next registered device */
367 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
369 if (d->focus >= d->mux_cnt)
371 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
374 d->timestamps = !d->timestamps;
375 d->timestamps_start = -1;
379 } else if (ch == term_escape_char) {
380 d->term_got_escape = 1;
388 static void mux_chr_accept_input(CharDriverState *chr)
390 MuxDriver *d = chr->opaque;
393 while (d->prod[m] != d->cons[m] &&
394 d->chr_can_read[m] &&
395 d->chr_can_read[m](d->ext_opaque[m])) {
396 d->chr_read[m](d->ext_opaque[m],
397 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
401 static int mux_chr_can_read(void *opaque)
403 CharDriverState *chr = opaque;
404 MuxDriver *d = chr->opaque;
407 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
409 if (d->chr_can_read[m])
410 return d->chr_can_read[m](d->ext_opaque[m]);
414 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
416 CharDriverState *chr = opaque;
417 MuxDriver *d = chr->opaque;
421 mux_chr_accept_input (opaque);
423 for(i = 0; i < size; i++)
424 if (mux_proc_byte(chr, d, buf[i])) {
425 if (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], &buf[i], 1);
430 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
434 static void mux_chr_event(void *opaque, int event)
436 CharDriverState *chr = opaque;
437 MuxDriver *d = chr->opaque;
440 /* Send the event to all registered listeners */
441 for (i = 0; i < d->mux_cnt; i++)
442 mux_chr_send_event(d, i, event);
445 static void mux_chr_update_read_handler(CharDriverState *chr)
447 MuxDriver *d = chr->opaque;
449 if (d->mux_cnt >= MAX_MUX) {
450 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
453 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
454 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
455 d->chr_read[d->mux_cnt] = chr->chr_read;
456 d->chr_event[d->mux_cnt] = chr->chr_event;
457 /* Fix up the real driver with mux routines */
458 if (d->mux_cnt == 0) {
459 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
462 if (d->focus != -1) {
463 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
465 d->focus = d->mux_cnt;
467 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
470 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
472 CharDriverState *chr;
475 chr = g_malloc0(sizeof(CharDriverState));
476 d = g_malloc0(sizeof(MuxDriver));
481 chr->chr_write = mux_chr_write;
482 chr->chr_update_read_handler = mux_chr_update_read_handler;
483 chr->chr_accept_input = mux_chr_accept_input;
484 /* Frontend guest-open / -close notification is not support with muxes */
485 chr->chr_guest_open = NULL;
486 chr->chr_guest_close = NULL;
488 /* Muxes are always open on creation */
489 qemu_chr_generic_open(chr);
496 int send_all(int fd, const void *buf, int len1)
502 ret = send(fd, buf, len, 0);
504 errno = WSAGetLastError();
505 if (errno != WSAEWOULDBLOCK) {
508 } else if (ret == 0) {
520 int send_all(int fd, const void *_buf, int len1)
523 const uint8_t *buf = _buf;
527 ret = write(fd, buf, len);
529 if (errno != EINTR && errno != EAGAIN)
531 } else if (ret == 0) {
542 #define STDIO_MAX_CLIENTS 1
543 static int stdio_nb_clients;
553 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
555 FDCharDriver *s = chr->opaque;
556 return send_all(s->fd_out, buf, len);
559 static int fd_chr_read_poll(void *opaque)
561 CharDriverState *chr = opaque;
562 FDCharDriver *s = chr->opaque;
564 s->max_size = qemu_chr_be_can_write(chr);
568 static void fd_chr_read(void *opaque)
570 CharDriverState *chr = opaque;
571 FDCharDriver *s = chr->opaque;
573 uint8_t buf[READ_BUF_LEN];
576 if (len > s->max_size)
580 size = read(s->fd_in, buf, len);
582 /* FD has been closed. Remove it from the active list. */
583 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
584 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
588 qemu_chr_be_write(chr, buf, size);
592 static void fd_chr_update_read_handler(CharDriverState *chr)
594 FDCharDriver *s = chr->opaque;
597 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
599 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
600 fd_chr_read, NULL, chr);
605 static void fd_chr_close(struct CharDriverState *chr)
607 FDCharDriver *s = chr->opaque;
610 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
612 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
617 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
620 /* open a character device to a unix fd */
621 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
623 CharDriverState *chr;
626 chr = g_malloc0(sizeof(CharDriverState));
627 s = g_malloc0(sizeof(FDCharDriver));
631 chr->chr_write = fd_chr_write;
632 chr->chr_update_read_handler = fd_chr_update_read_handler;
633 chr->chr_close = fd_chr_close;
635 qemu_chr_generic_open(chr);
640 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
644 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
645 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
649 return qemu_chr_open_fd(-1, fd_out);
652 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
655 char filename_in[256], filename_out[256];
656 const char *filename = qemu_opt_get(opts, "path");
658 if (filename == NULL) {
659 fprintf(stderr, "chardev: pipe: no filename given\n");
663 snprintf(filename_in, 256, "%s.in", filename);
664 snprintf(filename_out, 256, "%s.out", filename);
665 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
666 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
667 if (fd_in < 0 || fd_out < 0) {
672 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
677 return qemu_chr_open_fd(fd_in, fd_out);
681 /* for STDIO, we handle the case where several clients use it
684 #define TERM_FIFO_MAX_SIZE 1
686 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
687 static int term_fifo_size;
689 static int stdio_read_poll(void *opaque)
691 CharDriverState *chr = opaque;
693 /* try to flush the queue if needed */
694 if (term_fifo_size != 0 && qemu_chr_be_can_write(chr) > 0) {
695 qemu_chr_be_write(chr, term_fifo, 1);
698 /* see if we can absorb more chars */
699 if (term_fifo_size == 0)
705 static void stdio_read(void *opaque)
709 CharDriverState *chr = opaque;
711 size = read(0, buf, 1);
713 /* stdin has been closed. Remove it from the active list. */
714 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
715 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
719 if (qemu_chr_be_can_write(chr) > 0) {
720 qemu_chr_be_write(chr, buf, 1);
721 } else if (term_fifo_size == 0) {
722 term_fifo[term_fifo_size++] = buf[0];
727 /* init terminal so that we can grab keys */
728 static struct termios oldtty;
729 static int old_fd0_flags;
730 static bool stdio_allow_signal;
732 static void term_exit(void)
734 tcsetattr (0, TCSANOW, &oldtty);
735 fcntl(0, F_SETFL, old_fd0_flags);
738 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
744 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
745 |INLCR|IGNCR|ICRNL|IXON);
746 tty.c_oflag |= OPOST;
747 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
748 tty.c_cflag &= ~(CSIZE|PARENB);
753 /* if graphical mode, we allow Ctrl-C handling */
754 if (!stdio_allow_signal)
755 tty.c_lflag &= ~ISIG;
757 tcsetattr (0, TCSANOW, &tty);
760 static void qemu_chr_close_stdio(struct CharDriverState *chr)
764 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
768 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
770 CharDriverState *chr;
772 if (stdio_nb_clients >= STDIO_MAX_CLIENTS) {
775 if (is_daemonized()) {
776 error_report("cannot use stdio with -daemonize");
779 if (stdio_nb_clients == 0) {
780 old_fd0_flags = fcntl(0, F_GETFL);
781 tcgetattr (0, &oldtty);
782 fcntl(0, F_SETFL, O_NONBLOCK);
786 chr = qemu_chr_open_fd(0, 1);
787 chr->chr_close = qemu_chr_close_stdio;
788 chr->chr_set_echo = qemu_chr_set_echo_stdio;
789 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
791 stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
792 display_type != DT_NOGRAPHIC);
793 qemu_chr_fe_set_echo(chr, false);
799 /* Once Solaris has openpty(), this is going to be removed. */
800 static int openpty(int *amaster, int *aslave, char *name,
801 struct termios *termp, struct winsize *winp)
804 int mfd = -1, sfd = -1;
806 *amaster = *aslave = -1;
808 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
812 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
815 if ((slave = ptsname(mfd)) == NULL)
818 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
821 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
822 (termp != NULL && tcgetattr(sfd, termp) < 0))
830 ioctl(sfd, TIOCSWINSZ, winp);
841 static void cfmakeraw (struct termios *termios_p)
843 termios_p->c_iflag &=
844 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
845 termios_p->c_oflag &= ~OPOST;
846 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
847 termios_p->c_cflag &= ~(CSIZE|PARENB);
848 termios_p->c_cflag |= CS8;
850 termios_p->c_cc[VMIN] = 0;
851 termios_p->c_cc[VTIME] = 0;
855 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
856 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
857 || defined(__GLIBC__)
859 #define HAVE_CHARDEV_TTY 1
869 static void pty_chr_update_read_handler(CharDriverState *chr);
870 static void pty_chr_state(CharDriverState *chr, int connected);
872 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
874 PtyCharDriver *s = chr->opaque;
877 /* guest sends data, check for (re-)connect */
878 pty_chr_update_read_handler(chr);
881 return send_all(s->fd, buf, len);
884 static int pty_chr_read_poll(void *opaque)
886 CharDriverState *chr = opaque;
887 PtyCharDriver *s = chr->opaque;
889 s->read_bytes = qemu_chr_be_can_write(chr);
890 return s->read_bytes;
893 static void pty_chr_read(void *opaque)
895 CharDriverState *chr = opaque;
896 PtyCharDriver *s = chr->opaque;
898 uint8_t buf[READ_BUF_LEN];
901 if (len > s->read_bytes)
905 size = read(s->fd, buf, len);
906 if ((size == -1 && errno == EIO) ||
908 pty_chr_state(chr, 0);
912 pty_chr_state(chr, 1);
913 qemu_chr_be_write(chr, buf, size);
917 static void pty_chr_update_read_handler(CharDriverState *chr)
919 PtyCharDriver *s = chr->opaque;
921 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
922 pty_chr_read, NULL, chr);
925 * Short timeout here: just need wait long enougth that qemu makes
926 * it through the poll loop once. When reconnected we want a
927 * short timeout so we notice it almost instantly. Otherwise
928 * read() gives us -EIO instantly, making pty_chr_state() reset the
929 * timeout to the normal (much longer) poll interval before the
932 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
935 static void pty_chr_state(CharDriverState *chr, int connected)
937 PtyCharDriver *s = chr->opaque;
940 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
943 /* (re-)connect poll interval for idle guests: once per second.
944 * We check more frequently in case the guests sends data to
945 * the virtual device linked to our pty. */
946 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
949 qemu_chr_generic_open(chr);
954 static void pty_chr_timer(void *opaque)
956 struct CharDriverState *chr = opaque;
957 PtyCharDriver *s = chr->opaque;
962 /* If we arrive here without polling being cleared due
963 * read returning -EIO, then we are (re-)connected */
964 pty_chr_state(chr, 1);
969 pty_chr_update_read_handler(chr);
972 static void pty_chr_close(struct CharDriverState *chr)
974 PtyCharDriver *s = chr->opaque;
976 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
978 qemu_del_timer(s->timer);
979 qemu_free_timer(s->timer);
981 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
984 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
986 CharDriverState *chr;
990 int master_fd, slave_fd, len;
991 #if defined(__OpenBSD__) || defined(__DragonFly__)
992 char pty_name[PATH_MAX];
993 #define q_ptsname(x) pty_name
995 char *pty_name = NULL;
996 #define q_ptsname(x) ptsname(x)
999 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1003 /* Set raw attributes on the pty. */
1004 tcgetattr(slave_fd, &tty);
1006 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1009 chr = g_malloc0(sizeof(CharDriverState));
1011 len = strlen(q_ptsname(master_fd)) + 5;
1012 chr->filename = g_malloc(len);
1013 snprintf(chr->filename, len, "pty:%s", q_ptsname(master_fd));
1014 qemu_opt_set(opts, "path", q_ptsname(master_fd));
1016 label = qemu_opts_id(opts);
1017 fprintf(stderr, "char device redirected to %s%s%s%s\n",
1018 q_ptsname(master_fd),
1019 label ? " (label " : "",
1023 s = g_malloc0(sizeof(PtyCharDriver));
1025 chr->chr_write = pty_chr_write;
1026 chr->chr_update_read_handler = pty_chr_update_read_handler;
1027 chr->chr_close = pty_chr_close;
1030 s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
1035 static void tty_serial_init(int fd, int speed,
1036 int parity, int data_bits, int stop_bits)
1042 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1043 speed, parity, data_bits, stop_bits);
1045 tcgetattr (fd, &tty);
1047 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1048 speed = speed * 10 / 11;
1065 /* Non-Posix values follow. They may be unsupported on some systems. */
1067 check_speed(115200);
1069 check_speed(230400);
1072 check_speed(460800);
1075 check_speed(500000);
1078 check_speed(576000);
1081 check_speed(921600);
1084 check_speed(1000000);
1087 check_speed(1152000);
1090 check_speed(1500000);
1093 check_speed(2000000);
1096 check_speed(2500000);
1099 check_speed(3000000);
1102 check_speed(3500000);
1105 check_speed(4000000);
1110 cfsetispeed(&tty, spd);
1111 cfsetospeed(&tty, spd);
1113 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1114 |INLCR|IGNCR|ICRNL|IXON);
1115 tty.c_oflag |= OPOST;
1116 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1117 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1138 tty.c_cflag |= PARENB;
1141 tty.c_cflag |= PARENB | PARODD;
1145 tty.c_cflag |= CSTOPB;
1147 tcsetattr (fd, TCSANOW, &tty);
1150 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1152 FDCharDriver *s = chr->opaque;
1155 case CHR_IOCTL_SERIAL_SET_PARAMS:
1157 QEMUSerialSetParams *ssp = arg;
1158 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1159 ssp->data_bits, ssp->stop_bits);
1162 case CHR_IOCTL_SERIAL_SET_BREAK:
1164 int enable = *(int *)arg;
1166 tcsendbreak(s->fd_in, 1);
1169 case CHR_IOCTL_SERIAL_GET_TIOCM:
1172 int *targ = (int *)arg;
1173 ioctl(s->fd_in, TIOCMGET, &sarg);
1175 if (sarg & TIOCM_CTS)
1176 *targ |= CHR_TIOCM_CTS;
1177 if (sarg & TIOCM_CAR)
1178 *targ |= CHR_TIOCM_CAR;
1179 if (sarg & TIOCM_DSR)
1180 *targ |= CHR_TIOCM_DSR;
1181 if (sarg & TIOCM_RI)
1182 *targ |= CHR_TIOCM_RI;
1183 if (sarg & TIOCM_DTR)
1184 *targ |= CHR_TIOCM_DTR;
1185 if (sarg & TIOCM_RTS)
1186 *targ |= CHR_TIOCM_RTS;
1189 case CHR_IOCTL_SERIAL_SET_TIOCM:
1191 int sarg = *(int *)arg;
1193 ioctl(s->fd_in, TIOCMGET, &targ);
1194 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1195 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1196 if (sarg & CHR_TIOCM_CTS)
1198 if (sarg & CHR_TIOCM_CAR)
1200 if (sarg & CHR_TIOCM_DSR)
1202 if (sarg & CHR_TIOCM_RI)
1204 if (sarg & CHR_TIOCM_DTR)
1206 if (sarg & CHR_TIOCM_RTS)
1208 ioctl(s->fd_in, TIOCMSET, &targ);
1217 static void qemu_chr_close_tty(CharDriverState *chr)
1219 FDCharDriver *s = chr->opaque;
1233 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1235 const char *filename = qemu_opt_get(opts, "path");
1236 CharDriverState *chr;
1239 TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK));
1243 tty_serial_init(fd, 115200, 'N', 8, 1);
1244 chr = qemu_chr_open_fd(fd, fd);
1245 chr->chr_ioctl = tty_serial_ioctl;
1246 chr->chr_close = qemu_chr_close_tty;
1249 #endif /* __linux__ || __sun__ */
1251 #if defined(__linux__)
1253 #define HAVE_CHARDEV_PARPORT 1
1258 } ParallelCharDriver;
1260 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1262 if (s->mode != mode) {
1264 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1271 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1273 ParallelCharDriver *drv = chr->opaque;
1278 case CHR_IOCTL_PP_READ_DATA:
1279 if (ioctl(fd, PPRDATA, &b) < 0)
1281 *(uint8_t *)arg = b;
1283 case CHR_IOCTL_PP_WRITE_DATA:
1284 b = *(uint8_t *)arg;
1285 if (ioctl(fd, PPWDATA, &b) < 0)
1288 case CHR_IOCTL_PP_READ_CONTROL:
1289 if (ioctl(fd, PPRCONTROL, &b) < 0)
1291 /* Linux gives only the lowest bits, and no way to know data
1292 direction! For better compatibility set the fixed upper
1294 *(uint8_t *)arg = b | 0xc0;
1296 case CHR_IOCTL_PP_WRITE_CONTROL:
1297 b = *(uint8_t *)arg;
1298 if (ioctl(fd, PPWCONTROL, &b) < 0)
1301 case CHR_IOCTL_PP_READ_STATUS:
1302 if (ioctl(fd, PPRSTATUS, &b) < 0)
1304 *(uint8_t *)arg = b;
1306 case CHR_IOCTL_PP_DATA_DIR:
1307 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1310 case CHR_IOCTL_PP_EPP_READ_ADDR:
1311 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1312 struct ParallelIOArg *parg = arg;
1313 int n = read(fd, parg->buffer, parg->count);
1314 if (n != parg->count) {
1319 case CHR_IOCTL_PP_EPP_READ:
1320 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1321 struct ParallelIOArg *parg = arg;
1322 int n = read(fd, parg->buffer, parg->count);
1323 if (n != parg->count) {
1328 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1329 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1330 struct ParallelIOArg *parg = arg;
1331 int n = write(fd, parg->buffer, parg->count);
1332 if (n != parg->count) {
1337 case CHR_IOCTL_PP_EPP_WRITE:
1338 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1339 struct ParallelIOArg *parg = arg;
1340 int n = write(fd, parg->buffer, parg->count);
1341 if (n != parg->count) {
1352 static void pp_close(CharDriverState *chr)
1354 ParallelCharDriver *drv = chr->opaque;
1357 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1358 ioctl(fd, PPRELEASE);
1361 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1364 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1366 const char *filename = qemu_opt_get(opts, "path");
1367 CharDriverState *chr;
1368 ParallelCharDriver *drv;
1371 TFR(fd = qemu_open(filename, O_RDWR));
1376 if (ioctl(fd, PPCLAIM) < 0) {
1381 drv = g_malloc0(sizeof(ParallelCharDriver));
1383 drv->mode = IEEE1284_MODE_COMPAT;
1385 chr = g_malloc0(sizeof(CharDriverState));
1386 chr->chr_write = null_chr_write;
1387 chr->chr_ioctl = pp_ioctl;
1388 chr->chr_close = pp_close;
1391 qemu_chr_generic_open(chr);
1395 #endif /* __linux__ */
1397 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1399 #define HAVE_CHARDEV_PARPORT 1
1401 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1403 int fd = (int)(intptr_t)chr->opaque;
1407 case CHR_IOCTL_PP_READ_DATA:
1408 if (ioctl(fd, PPIGDATA, &b) < 0)
1410 *(uint8_t *)arg = b;
1412 case CHR_IOCTL_PP_WRITE_DATA:
1413 b = *(uint8_t *)arg;
1414 if (ioctl(fd, PPISDATA, &b) < 0)
1417 case CHR_IOCTL_PP_READ_CONTROL:
1418 if (ioctl(fd, PPIGCTRL, &b) < 0)
1420 *(uint8_t *)arg = b;
1422 case CHR_IOCTL_PP_WRITE_CONTROL:
1423 b = *(uint8_t *)arg;
1424 if (ioctl(fd, PPISCTRL, &b) < 0)
1427 case CHR_IOCTL_PP_READ_STATUS:
1428 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1430 *(uint8_t *)arg = b;
1438 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1440 const char *filename = qemu_opt_get(opts, "path");
1441 CharDriverState *chr;
1444 fd = qemu_open(filename, O_RDWR);
1449 chr = g_malloc0(sizeof(CharDriverState));
1450 chr->opaque = (void *)(intptr_t)fd;
1451 chr->chr_write = null_chr_write;
1452 chr->chr_ioctl = pp_ioctl;
1459 static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];
1463 HANDLE hcom, hrecv, hsend;
1464 OVERLAPPED orecv, osend;
1471 HANDLE hInputReadyEvent;
1472 HANDLE hInputDoneEvent;
1473 HANDLE hInputThread;
1474 uint8_t win_stdio_buf;
1475 } WinStdioCharState;
1477 #define NSENDBUF 2048
1478 #define NRECVBUF 2048
1479 #define MAXCONNECT 1
1480 #define NTIMEOUT 5000
1482 static int win_chr_poll(void *opaque);
1483 static int win_chr_pipe_poll(void *opaque);
1485 static void win_chr_close(CharDriverState *chr)
1487 WinCharState *s = chr->opaque;
1490 CloseHandle(s->hsend);
1494 CloseHandle(s->hrecv);
1498 CloseHandle(s->hcom);
1502 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1504 qemu_del_polling_cb(win_chr_poll, chr);
1506 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1509 static int win_chr_init(CharDriverState *chr, const char *filename)
1511 WinCharState *s = chr->opaque;
1513 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1518 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1520 fprintf(stderr, "Failed CreateEvent\n");
1523 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1525 fprintf(stderr, "Failed CreateEvent\n");
1529 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1530 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1531 if (s->hcom == INVALID_HANDLE_VALUE) {
1532 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1537 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1538 fprintf(stderr, "Failed SetupComm\n");
1542 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1543 size = sizeof(COMMCONFIG);
1544 GetDefaultCommConfig(filename, &comcfg, &size);
1545 comcfg.dcb.DCBlength = sizeof(DCB);
1546 CommConfigDialog(filename, NULL, &comcfg);
1548 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1549 fprintf(stderr, "Failed SetCommState\n");
1553 if (!SetCommMask(s->hcom, EV_ERR)) {
1554 fprintf(stderr, "Failed SetCommMask\n");
1558 cto.ReadIntervalTimeout = MAXDWORD;
1559 if (!SetCommTimeouts(s->hcom, &cto)) {
1560 fprintf(stderr, "Failed SetCommTimeouts\n");
1564 if (!ClearCommError(s->hcom, &err, &comstat)) {
1565 fprintf(stderr, "Failed ClearCommError\n");
1568 qemu_add_polling_cb(win_chr_poll, chr);
1576 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1578 WinCharState *s = chr->opaque;
1579 DWORD len, ret, size, err;
1582 ZeroMemory(&s->osend, sizeof(s->osend));
1583 s->osend.hEvent = s->hsend;
1586 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1588 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1590 err = GetLastError();
1591 if (err == ERROR_IO_PENDING) {
1592 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1610 static int win_chr_read_poll(CharDriverState *chr)
1612 WinCharState *s = chr->opaque;
1614 s->max_size = qemu_chr_be_can_write(chr);
1618 static void win_chr_readfile(CharDriverState *chr)
1620 WinCharState *s = chr->opaque;
1622 uint8_t buf[READ_BUF_LEN];
1625 ZeroMemory(&s->orecv, sizeof(s->orecv));
1626 s->orecv.hEvent = s->hrecv;
1627 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1629 err = GetLastError();
1630 if (err == ERROR_IO_PENDING) {
1631 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1636 qemu_chr_be_write(chr, buf, size);
1640 static void win_chr_read(CharDriverState *chr)
1642 WinCharState *s = chr->opaque;
1644 if (s->len > s->max_size)
1645 s->len = s->max_size;
1649 win_chr_readfile(chr);
1652 static int win_chr_poll(void *opaque)
1654 CharDriverState *chr = opaque;
1655 WinCharState *s = chr->opaque;
1659 ClearCommError(s->hcom, &comerr, &status);
1660 if (status.cbInQue > 0) {
1661 s->len = status.cbInQue;
1662 win_chr_read_poll(chr);
1669 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1671 const char *filename = qemu_opt_get(opts, "path");
1672 CharDriverState *chr;
1675 chr = g_malloc0(sizeof(CharDriverState));
1676 s = g_malloc0(sizeof(WinCharState));
1678 chr->chr_write = win_chr_write;
1679 chr->chr_close = win_chr_close;
1681 if (win_chr_init(chr, filename) < 0) {
1686 qemu_chr_generic_open(chr);
1690 static int win_chr_pipe_poll(void *opaque)
1692 CharDriverState *chr = opaque;
1693 WinCharState *s = chr->opaque;
1696 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1699 win_chr_read_poll(chr);
1706 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1708 WinCharState *s = chr->opaque;
1716 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1718 fprintf(stderr, "Failed CreateEvent\n");
1721 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1723 fprintf(stderr, "Failed CreateEvent\n");
1727 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1728 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1729 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1731 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1732 if (s->hcom == INVALID_HANDLE_VALUE) {
1733 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1738 ZeroMemory(&ov, sizeof(ov));
1739 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1740 ret = ConnectNamedPipe(s->hcom, &ov);
1742 fprintf(stderr, "Failed ConnectNamedPipe\n");
1746 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1748 fprintf(stderr, "Failed GetOverlappedResult\n");
1750 CloseHandle(ov.hEvent);
1757 CloseHandle(ov.hEvent);
1760 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1769 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1771 const char *filename = qemu_opt_get(opts, "path");
1772 CharDriverState *chr;
1775 chr = g_malloc0(sizeof(CharDriverState));
1776 s = g_malloc0(sizeof(WinCharState));
1778 chr->chr_write = win_chr_write;
1779 chr->chr_close = win_chr_close;
1781 if (win_chr_pipe_init(chr, filename) < 0) {
1786 qemu_chr_generic_open(chr);
1790 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1792 CharDriverState *chr;
1795 chr = g_malloc0(sizeof(CharDriverState));
1796 s = g_malloc0(sizeof(WinCharState));
1799 chr->chr_write = win_chr_write;
1800 qemu_chr_generic_open(chr);
1804 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1806 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1809 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1811 const char *file_out = qemu_opt_get(opts, "path");
1814 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1815 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1816 if (fd_out == INVALID_HANDLE_VALUE) {
1820 return qemu_chr_open_win_file(fd_out);
1823 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1825 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1832 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1842 static void win_stdio_wait_func(void *opaque)
1844 CharDriverState *chr = opaque;
1845 WinStdioCharState *stdio = chr->opaque;
1846 INPUT_RECORD buf[4];
1851 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1855 /* Avoid error storm */
1856 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1860 for (i = 0; i < dwSize; i++) {
1861 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
1863 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
1865 if (kev->uChar.AsciiChar != 0) {
1866 for (j = 0; j < kev->wRepeatCount; j++) {
1867 if (qemu_chr_be_can_write(chr)) {
1868 uint8_t c = kev->uChar.AsciiChar;
1869 qemu_chr_be_write(chr, &c, 1);
1877 static DWORD WINAPI win_stdio_thread(LPVOID param)
1879 CharDriverState *chr = param;
1880 WinStdioCharState *stdio = chr->opaque;
1886 /* Wait for one byte */
1887 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
1889 /* Exit in case of error, continue if nothing read */
1897 /* Some terminal emulator returns \r\n for Enter, just pass \n */
1898 if (stdio->win_stdio_buf == '\r') {
1902 /* Signal the main thread and wait until the byte was eaten */
1903 if (!SetEvent(stdio->hInputReadyEvent)) {
1906 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
1912 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
1916 static void win_stdio_thread_wait_func(void *opaque)
1918 CharDriverState *chr = opaque;
1919 WinStdioCharState *stdio = chr->opaque;
1921 if (qemu_chr_be_can_write(chr)) {
1922 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
1925 SetEvent(stdio->hInputDoneEvent);
1928 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
1930 WinStdioCharState *stdio = chr->opaque;
1933 GetConsoleMode(stdio->hStdIn, &dwMode);
1936 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
1938 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
1942 static void win_stdio_close(CharDriverState *chr)
1944 WinStdioCharState *stdio = chr->opaque;
1946 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
1947 CloseHandle(stdio->hInputReadyEvent);
1949 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
1950 CloseHandle(stdio->hInputDoneEvent);
1952 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
1953 TerminateThread(stdio->hInputThread, 0);
1956 g_free(chr->opaque);
1961 static CharDriverState *qemu_chr_open_win_stdio(QemuOpts *opts)
1963 CharDriverState *chr;
1964 WinStdioCharState *stdio;
1968 if (stdio_nb_clients >= STDIO_MAX_CLIENTS
1969 || ((display_type != DT_NOGRAPHIC) && (stdio_nb_clients != 0))) {
1973 chr = g_malloc0(sizeof(CharDriverState));
1974 stdio = g_malloc0(sizeof(WinStdioCharState));
1976 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
1977 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
1978 fprintf(stderr, "cannot open stdio: invalid handle\n");
1982 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
1984 chr->opaque = stdio;
1985 chr->chr_write = win_stdio_write;
1986 chr->chr_close = win_stdio_close;
1988 if (stdio_nb_clients == 0) {
1990 if (qemu_add_wait_object(stdio->hStdIn,
1991 win_stdio_wait_func, chr)) {
1992 fprintf(stderr, "qemu_add_wait_object: failed\n");
1997 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
1998 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
1999 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2002 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2003 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2004 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2005 fprintf(stderr, "cannot create stdio thread or event\n");
2008 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2009 win_stdio_thread_wait_func, chr)) {
2010 fprintf(stderr, "qemu_add_wait_object: failed\n");
2015 dwMode |= ENABLE_LINE_INPUT;
2017 stdio_clients[stdio_nb_clients++] = chr;
2018 if (stdio_nb_clients == 1 && is_console) {
2019 /* set the terminal in raw mode */
2020 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2021 dwMode |= ENABLE_PROCESSED_INPUT;
2024 SetConsoleMode(stdio->hStdIn, dwMode);
2026 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2027 qemu_chr_fe_set_echo(chr, false);
2031 #endif /* !_WIN32 */
2033 /***********************************************************/
2034 /* UDP Net console */
2038 uint8_t buf[READ_BUF_LEN];
2044 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2046 NetCharDriver *s = chr->opaque;
2048 return send(s->fd, (const void *)buf, len, 0);
2051 static int udp_chr_read_poll(void *opaque)
2053 CharDriverState *chr = opaque;
2054 NetCharDriver *s = chr->opaque;
2056 s->max_size = qemu_chr_be_can_write(chr);
2058 /* If there were any stray characters in the queue process them
2061 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2062 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2064 s->max_size = qemu_chr_be_can_write(chr);
2069 static void udp_chr_read(void *opaque)
2071 CharDriverState *chr = opaque;
2072 NetCharDriver *s = chr->opaque;
2074 if (s->max_size == 0)
2076 s->bufcnt = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0);
2077 s->bufptr = s->bufcnt;
2082 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2083 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2085 s->max_size = qemu_chr_be_can_write(chr);
2089 static void udp_chr_update_read_handler(CharDriverState *chr)
2091 NetCharDriver *s = chr->opaque;
2094 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
2095 udp_chr_read, NULL, chr);
2099 static void udp_chr_close(CharDriverState *chr)
2101 NetCharDriver *s = chr->opaque;
2103 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2107 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2110 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2112 CharDriverState *chr = NULL;
2113 NetCharDriver *s = NULL;
2114 Error *local_err = NULL;
2117 chr = g_malloc0(sizeof(CharDriverState));
2118 s = g_malloc0(sizeof(NetCharDriver));
2120 fd = inet_dgram_opts(opts, &local_err);
2129 chr->chr_write = udp_chr_write;
2130 chr->chr_update_read_handler = udp_chr_update_read_handler;
2131 chr->chr_close = udp_chr_close;
2136 qerror_report_err(local_err);
2137 error_free(local_err);
2147 /***********************************************************/
2148 /* TCP Net console */
2160 static void tcp_chr_accept(void *opaque);
2162 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2164 TCPCharDriver *s = chr->opaque;
2166 return send_all(s->fd, buf, len);
2168 /* XXX: indicate an error ? */
2173 static int tcp_chr_read_poll(void *opaque)
2175 CharDriverState *chr = opaque;
2176 TCPCharDriver *s = chr->opaque;
2179 s->max_size = qemu_chr_be_can_write(chr);
2184 #define IAC_BREAK 243
2185 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2187 uint8_t *buf, int *size)
2189 /* Handle any telnet client's basic IAC options to satisfy char by
2190 * char mode with no echo. All IAC options will be removed from
2191 * the buf and the do_telnetopt variable will be used to track the
2192 * state of the width of the IAC information.
2194 * IAC commands come in sets of 3 bytes with the exception of the
2195 * "IAC BREAK" command and the double IAC.
2201 for (i = 0; i < *size; i++) {
2202 if (s->do_telnetopt > 1) {
2203 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2204 /* Double IAC means send an IAC */
2208 s->do_telnetopt = 1;
2210 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2211 /* Handle IAC break commands by sending a serial break */
2212 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2217 if (s->do_telnetopt >= 4) {
2218 s->do_telnetopt = 1;
2221 if ((unsigned char)buf[i] == IAC) {
2222 s->do_telnetopt = 2;
2233 static int tcp_get_msgfd(CharDriverState *chr)
2235 TCPCharDriver *s = chr->opaque;
2242 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2244 TCPCharDriver *s = chr->opaque;
2245 struct cmsghdr *cmsg;
2247 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2250 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2251 cmsg->cmsg_level != SOL_SOCKET ||
2252 cmsg->cmsg_type != SCM_RIGHTS)
2255 fd = *((int *)CMSG_DATA(cmsg));
2259 #ifndef MSG_CMSG_CLOEXEC
2260 qemu_set_cloexec(fd);
2268 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2270 TCPCharDriver *s = chr->opaque;
2271 struct msghdr msg = { NULL, };
2272 struct iovec iov[1];
2274 struct cmsghdr cmsg;
2275 char control[CMSG_SPACE(sizeof(int))];
2280 iov[0].iov_base = buf;
2281 iov[0].iov_len = len;
2285 msg.msg_control = &msg_control;
2286 msg.msg_controllen = sizeof(msg_control);
2288 #ifdef MSG_CMSG_CLOEXEC
2289 flags |= MSG_CMSG_CLOEXEC;
2291 ret = recvmsg(s->fd, &msg, flags);
2292 if (ret > 0 && s->is_unix) {
2293 unix_process_msgfd(chr, &msg);
2299 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2301 TCPCharDriver *s = chr->opaque;
2302 return qemu_recv(s->fd, buf, len, 0);
2306 static void tcp_chr_read(void *opaque)
2308 CharDriverState *chr = opaque;
2309 TCPCharDriver *s = chr->opaque;
2310 uint8_t buf[READ_BUF_LEN];
2313 if (!s->connected || s->max_size <= 0)
2316 if (len > s->max_size)
2318 size = tcp_chr_recv(chr, (void *)buf, len);
2320 /* connection closed */
2322 if (s->listen_fd >= 0) {
2323 qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
2325 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2328 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2329 } else if (size > 0) {
2330 if (s->do_telnetopt)
2331 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2333 qemu_chr_be_write(chr, buf, size);
2338 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2340 return qemu_chr_open_fd(eventfd, eventfd);
2344 static void tcp_chr_connect(void *opaque)
2346 CharDriverState *chr = opaque;
2347 TCPCharDriver *s = chr->opaque;
2351 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2352 tcp_chr_read, NULL, chr);
2354 qemu_chr_generic_open(chr);
2357 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2358 static void tcp_chr_telnet_init(int fd)
2361 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2362 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2363 send(fd, (char *)buf, 3, 0);
2364 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2365 send(fd, (char *)buf, 3, 0);
2366 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2367 send(fd, (char *)buf, 3, 0);
2368 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2369 send(fd, (char *)buf, 3, 0);
2372 static void socket_set_nodelay(int fd)
2375 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2378 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2380 TCPCharDriver *s = chr->opaque;
2384 socket_set_nonblock(fd);
2386 socket_set_nodelay(fd);
2388 qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
2389 tcp_chr_connect(chr);
2394 static void tcp_chr_accept(void *opaque)
2396 CharDriverState *chr = opaque;
2397 TCPCharDriver *s = chr->opaque;
2398 struct sockaddr_in saddr;
2400 struct sockaddr_un uaddr;
2402 struct sockaddr *addr;
2409 len = sizeof(uaddr);
2410 addr = (struct sockaddr *)&uaddr;
2414 len = sizeof(saddr);
2415 addr = (struct sockaddr *)&saddr;
2417 fd = qemu_accept(s->listen_fd, addr, &len);
2418 if (fd < 0 && errno != EINTR) {
2420 } else if (fd >= 0) {
2421 if (s->do_telnetopt)
2422 tcp_chr_telnet_init(fd);
2426 if (tcp_chr_add_client(chr, fd) < 0)
2430 static void tcp_chr_close(CharDriverState *chr)
2432 TCPCharDriver *s = chr->opaque;
2434 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2437 if (s->listen_fd >= 0) {
2438 qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
2439 closesocket(s->listen_fd);
2442 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2445 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2447 CharDriverState *chr = NULL;
2448 TCPCharDriver *s = NULL;
2449 Error *local_err = NULL;
2457 is_listen = qemu_opt_get_bool(opts, "server", 0);
2458 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2459 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2460 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2461 is_unix = qemu_opt_get(opts, "path") != NULL;
2465 chr = g_malloc0(sizeof(CharDriverState));
2466 s = g_malloc0(sizeof(TCPCharDriver));
2470 fd = unix_listen_opts(opts, &local_err);
2472 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2476 fd = inet_listen_opts(opts, 0, &local_err);
2478 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2485 if (!is_waitconnect)
2486 socket_set_nonblock(fd);
2492 s->is_unix = is_unix;
2493 s->do_nodelay = do_nodelay && !is_unix;
2496 chr->chr_write = tcp_chr_write;
2497 chr->chr_close = tcp_chr_close;
2498 chr->get_msgfd = tcp_get_msgfd;
2499 chr->chr_add_client = tcp_chr_add_client;
2503 qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
2505 s->do_telnetopt = 1;
2510 socket_set_nodelay(fd);
2511 tcp_chr_connect(chr);
2514 /* for "info chardev" monitor command */
2515 chr->filename = g_malloc(256);
2517 snprintf(chr->filename, 256, "unix:%s%s",
2518 qemu_opt_get(opts, "path"),
2519 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2520 } else if (is_telnet) {
2521 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2522 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2523 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2525 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2526 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2527 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2530 if (is_listen && is_waitconnect) {
2531 printf("QEMU waiting for connection on: %s\n",
2533 tcp_chr_accept(chr);
2534 socket_set_nonblock(s->listen_fd);
2540 qerror_report_err(local_err);
2541 error_free(local_err);
2551 /***********************************************************/
2552 /* Memory chardev */
2555 size_t outbuf_capacity;
2559 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2561 MemoryDriver *d = chr->opaque;
2563 /* TODO: the QString implementation has the same code, we should
2564 * introduce a generic way to do this in cutils.c */
2565 if (d->outbuf_capacity < d->outbuf_size + len) {
2567 d->outbuf_capacity += len;
2568 d->outbuf_capacity *= 2;
2569 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2572 memcpy(d->outbuf + d->outbuf_size, buf, len);
2573 d->outbuf_size += len;
2578 void qemu_chr_init_mem(CharDriverState *chr)
2582 d = g_malloc(sizeof(*d));
2584 d->outbuf_capacity = 4096;
2585 d->outbuf = g_malloc0(d->outbuf_capacity);
2587 memset(chr, 0, sizeof(*chr));
2589 chr->chr_write = mem_chr_write;
2592 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2594 MemoryDriver *d = chr->opaque;
2595 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2598 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2599 void qemu_chr_close_mem(CharDriverState *chr)
2601 MemoryDriver *d = chr->opaque;
2604 g_free(chr->opaque);
2606 chr->chr_write = NULL;
2609 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2611 const MemoryDriver *d = chr->opaque;
2612 return d->outbuf_size;
2615 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2617 char host[65], port[33], width[8], height[8];
2621 Error *local_err = NULL;
2623 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2624 if (error_is_set(&local_err)) {
2625 qerror_report_err(local_err);
2626 error_free(local_err);
2630 if (strstart(filename, "mon:", &p)) {
2632 qemu_opt_set(opts, "mux", "on");
2635 if (strcmp(filename, "null") == 0 ||
2636 strcmp(filename, "pty") == 0 ||
2637 strcmp(filename, "msmouse") == 0 ||
2638 strcmp(filename, "braille") == 0 ||
2639 strcmp(filename, "stdio") == 0) {
2640 qemu_opt_set(opts, "backend", filename);
2643 if (strstart(filename, "vc", &p)) {
2644 qemu_opt_set(opts, "backend", "vc");
2646 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2648 qemu_opt_set(opts, "width", width);
2649 qemu_opt_set(opts, "height", height);
2650 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2652 qemu_opt_set(opts, "cols", width);
2653 qemu_opt_set(opts, "rows", height);
2660 if (strcmp(filename, "con:") == 0) {
2661 qemu_opt_set(opts, "backend", "console");
2664 if (strstart(filename, "COM", NULL)) {
2665 qemu_opt_set(opts, "backend", "serial");
2666 qemu_opt_set(opts, "path", filename);
2669 if (strstart(filename, "file:", &p)) {
2670 qemu_opt_set(opts, "backend", "file");
2671 qemu_opt_set(opts, "path", p);
2674 if (strstart(filename, "pipe:", &p)) {
2675 qemu_opt_set(opts, "backend", "pipe");
2676 qemu_opt_set(opts, "path", p);
2679 if (strstart(filename, "tcp:", &p) ||
2680 strstart(filename, "telnet:", &p)) {
2681 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2683 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2686 qemu_opt_set(opts, "backend", "socket");
2687 qemu_opt_set(opts, "host", host);
2688 qemu_opt_set(opts, "port", port);
2689 if (p[pos] == ',') {
2690 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2693 if (strstart(filename, "telnet:", &p))
2694 qemu_opt_set(opts, "telnet", "on");
2697 if (strstart(filename, "udp:", &p)) {
2698 qemu_opt_set(opts, "backend", "udp");
2699 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2701 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2705 qemu_opt_set(opts, "host", host);
2706 qemu_opt_set(opts, "port", port);
2707 if (p[pos] == '@') {
2709 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2711 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2715 qemu_opt_set(opts, "localaddr", host);
2716 qemu_opt_set(opts, "localport", port);
2720 if (strstart(filename, "unix:", &p)) {
2721 qemu_opt_set(opts, "backend", "socket");
2722 if (qemu_opts_do_parse(opts, p, "path") != 0)
2726 if (strstart(filename, "/dev/parport", NULL) ||
2727 strstart(filename, "/dev/ppi", NULL)) {
2728 qemu_opt_set(opts, "backend", "parport");
2729 qemu_opt_set(opts, "path", filename);
2732 if (strstart(filename, "/dev/", NULL)) {
2733 qemu_opt_set(opts, "backend", "tty");
2734 qemu_opt_set(opts, "path", filename);
2739 qemu_opts_del(opts);
2743 static const struct {
2745 CharDriverState *(*open)(QemuOpts *opts);
2746 } backend_table[] = {
2747 { .name = "null", .open = qemu_chr_open_null },
2748 { .name = "socket", .open = qemu_chr_open_socket },
2749 { .name = "udp", .open = qemu_chr_open_udp },
2750 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2751 { .name = "vc", .open = text_console_init },
2753 { .name = "file", .open = qemu_chr_open_win_file_out },
2754 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2755 { .name = "console", .open = qemu_chr_open_win_con },
2756 { .name = "serial", .open = qemu_chr_open_win },
2757 { .name = "stdio", .open = qemu_chr_open_win_stdio },
2759 { .name = "file", .open = qemu_chr_open_file_out },
2760 { .name = "pipe", .open = qemu_chr_open_pipe },
2761 { .name = "stdio", .open = qemu_chr_open_stdio },
2763 #ifdef CONFIG_BRLAPI
2764 { .name = "braille", .open = chr_baum_init },
2766 #ifdef HAVE_CHARDEV_TTY
2767 { .name = "tty", .open = qemu_chr_open_tty },
2768 { .name = "pty", .open = qemu_chr_open_pty },
2770 #ifdef HAVE_CHARDEV_PARPORT
2771 { .name = "parport", .open = qemu_chr_open_pp },
2774 { .name = "spicevmc", .open = qemu_chr_open_spice },
2775 #if SPICE_SERVER_VERSION >= 0x000c02
2776 { .name = "spiceport", .open = qemu_chr_open_spice_port },
2781 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
2782 void (*init)(struct CharDriverState *s),
2785 CharDriverState *chr;
2788 if (qemu_opts_id(opts) == NULL) {
2789 error_setg(errp, "chardev: no id specified\n");
2793 if (qemu_opt_get(opts, "backend") == NULL) {
2794 error_setg(errp, "chardev: \"%s\" missing backend\n",
2795 qemu_opts_id(opts));
2798 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2799 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2802 if (i == ARRAY_SIZE(backend_table)) {
2803 error_setg(errp, "chardev: backend \"%s\" not found\n",
2804 qemu_opt_get(opts, "backend"));
2808 chr = backend_table[i].open(opts);
2810 error_setg(errp, "chardev: opening backend \"%s\" failed\n",
2811 qemu_opt_get(opts, "backend"));
2816 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
2818 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2820 if (qemu_opt_get_bool(opts, "mux", 0)) {
2821 CharDriverState *base = chr;
2822 int len = strlen(qemu_opts_id(opts)) + 6;
2823 base->label = g_malloc(len);
2824 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2825 chr = qemu_chr_open_mux(base);
2826 chr->filename = base->filename;
2827 chr->avail_connections = MAX_MUX;
2828 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2830 chr->avail_connections = 1;
2832 chr->label = g_strdup(qemu_opts_id(opts));
2837 qemu_opts_del(opts);
2841 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2844 CharDriverState *chr;
2848 if (strstart(filename, "chardev:", &p)) {
2849 return qemu_chr_find(p);
2852 opts = qemu_chr_parse_compat(label, filename);
2856 chr = qemu_chr_new_from_opts(opts, init, &err);
2857 if (error_is_set(&err)) {
2858 fprintf(stderr, "%s\n", error_get_pretty(err));
2861 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2862 monitor_init(chr, MONITOR_USE_READLINE);
2867 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
2869 if (chr->chr_set_echo) {
2870 chr->chr_set_echo(chr, echo);
2874 void qemu_chr_fe_open(struct CharDriverState *chr)
2876 if (chr->chr_guest_open) {
2877 chr->chr_guest_open(chr);
2881 void qemu_chr_fe_close(struct CharDriverState *chr)
2883 if (chr->chr_guest_close) {
2884 chr->chr_guest_close(chr);
2888 void qemu_chr_delete(CharDriverState *chr)
2890 QTAILQ_REMOVE(&chardevs, chr, next);
2891 if (chr->chr_close) {
2892 chr->chr_close(chr);
2894 g_free(chr->filename);
2897 qemu_opts_del(chr->opts);
2902 ChardevInfoList *qmp_query_chardev(Error **errp)
2904 ChardevInfoList *chr_list = NULL;
2905 CharDriverState *chr;
2907 QTAILQ_FOREACH(chr, &chardevs, next) {
2908 ChardevInfoList *info = g_malloc0(sizeof(*info));
2909 info->value = g_malloc0(sizeof(*info->value));
2910 info->value->label = g_strdup(chr->label);
2911 info->value->filename = g_strdup(chr->filename);
2913 info->next = chr_list;
2920 CharDriverState *qemu_chr_find(const char *name)
2922 CharDriverState *chr;
2924 QTAILQ_FOREACH(chr, &chardevs, next) {
2925 if (strcmp(chr->label, name) != 0)
2932 /* Get a character (serial) device interface. */
2933 CharDriverState *qemu_char_get_next_serial(void)
2935 static int next_serial;
2937 /* FIXME: This function needs to go away: use chardev properties! */
2938 return serial_hds[next_serial++];
2941 QemuOptsList qemu_chardev_opts = {
2943 .implied_opt_name = "backend",
2944 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
2948 .type = QEMU_OPT_STRING,
2951 .type = QEMU_OPT_STRING,
2954 .type = QEMU_OPT_STRING,
2957 .type = QEMU_OPT_STRING,
2959 .name = "localaddr",
2960 .type = QEMU_OPT_STRING,
2962 .name = "localport",
2963 .type = QEMU_OPT_STRING,
2966 .type = QEMU_OPT_NUMBER,
2969 .type = QEMU_OPT_BOOL,
2972 .type = QEMU_OPT_BOOL,
2975 .type = QEMU_OPT_BOOL,
2978 .type = QEMU_OPT_BOOL,
2981 .type = QEMU_OPT_BOOL,
2984 .type = QEMU_OPT_BOOL,
2987 .type = QEMU_OPT_NUMBER,
2990 .type = QEMU_OPT_NUMBER,
2993 .type = QEMU_OPT_NUMBER,
2996 .type = QEMU_OPT_NUMBER,
2999 .type = QEMU_OPT_BOOL,
3002 .type = QEMU_OPT_BOOL,
3005 .type = QEMU_OPT_STRING,
3008 .type = QEMU_OPT_NUMBER,
3010 { /* end of list */ }
3016 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3021 error_setg(errp, "input file not supported");
3025 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3026 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3027 if (out == INVALID_HANDLE_VALUE) {
3028 error_setg(errp, "open %s failed", file->out);
3031 return qemu_chr_open_win_file(out);
3036 static int qmp_chardev_open_file_source(char *src, int flags,
3041 TFR(fd = qemu_open(src, flags, 0666));
3043 error_setg(errp, "open %s: %s", src, strerror(errno));
3048 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3050 int flags, in = -1, out = -1;
3052 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3053 out = qmp_chardev_open_file_source(file->out, flags, errp);
3054 if (error_is_set(errp)) {
3060 in = qmp_chardev_open_file_source(file->in, flags, errp);
3061 if (error_is_set(errp)) {
3067 return qemu_chr_open_fd(in, out);
3072 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3075 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3076 CharDriverState *chr = NULL;
3078 chr = qemu_chr_find(id);
3080 error_setg(errp, "Chardev '%s' already exists", id);
3085 switch (backend->kind) {
3086 case CHARDEV_BACKEND_KIND_FILE:
3087 chr = qmp_chardev_open_file(backend->file, errp);
3089 case CHARDEV_BACKEND_KIND_NULL:
3090 chr = qemu_chr_open_null(NULL);
3093 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3097 if (chr == NULL && !error_is_set(errp)) {
3098 error_setg(errp, "Failed to create chardev");
3101 chr->label = g_strdup(id);
3102 chr->avail_connections = 1;
3103 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3111 void qmp_chardev_remove(const char *id, Error **errp)
3113 CharDriverState *chr;
3115 chr = qemu_chr_find(id);
3117 error_setg(errp, "Chardev '%s' not found", id);
3120 if (chr->chr_can_read || chr->chr_read ||
3121 chr->chr_event || chr->handler_opaque) {
3122 error_setg(errp, "Chardev '%s' is busy", id);
3125 qemu_chr_delete(chr);