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"
29 #include "qemu-timer.h"
30 #include "qemu-char.h"
33 #include "hw/msmouse.h"
34 #include "qmp-commands.h"
44 #include <sys/times.h>
48 #include <sys/ioctl.h>
49 #include <sys/resource.h>
50 #include <sys/socket.h>
51 #include <netinet/in.h>
53 #include <arpa/inet.h>
56 #include <sys/select.h>
59 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61 #include <dev/ppbus/ppi.h>
62 #include <dev/ppbus/ppbconf.h>
63 #if defined(__GLIBC__)
66 #elif defined(__DragonFly__)
68 #include <dev/misc/ppi/ppi.h>
69 #include <bus/ppbus/ppbconf.h>
77 #include <linux/ppdev.h>
78 #include <linux/parport.h>
82 #include <sys/ethernet.h>
83 #include <sys/sockio.h>
84 #include <netinet/arp.h>
85 #include <netinet/in.h>
86 #include <netinet/in_systm.h>
87 #include <netinet/ip.h>
88 #include <netinet/ip_icmp.h> // must come after ip.h
89 #include <netinet/udp.h>
90 #include <netinet/tcp.h>
98 #include "qemu_socket.h"
99 #include "ui/qemu-spice.h"
101 #define READ_BUF_LEN 4096
103 /***********************************************************/
104 /* character device */
106 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
107 QTAILQ_HEAD_INITIALIZER(chardevs);
109 void qemu_chr_be_event(CharDriverState *s, int event)
111 /* Keep track if the char device is open */
113 case CHR_EVENT_OPENED:
116 case CHR_EVENT_CLOSED:
123 s->chr_event(s->handler_opaque, event);
126 static void qemu_chr_generic_open_bh(void *opaque)
128 CharDriverState *s = opaque;
129 qemu_chr_be_event(s, CHR_EVENT_OPENED);
130 qemu_bh_delete(s->bh);
134 void qemu_chr_generic_open(CharDriverState *s)
137 s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
138 qemu_bh_schedule(s->bh);
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)
163 s->chr_read(s->handler_opaque, buf, len);
166 int qemu_chr_fe_get_msgfd(CharDriverState *s)
168 return s->get_msgfd ? s->get_msgfd(s) : -1;
171 int qemu_chr_add_client(CharDriverState *s, int fd)
173 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
176 void qemu_chr_accept_input(CharDriverState *s)
178 if (s->chr_accept_input)
179 s->chr_accept_input(s);
182 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
184 char buf[READ_BUF_LEN];
187 vsnprintf(buf, sizeof(buf), fmt, ap);
188 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
192 void qemu_chr_add_handlers(CharDriverState *s,
193 IOCanReadHandler *fd_can_read,
194 IOReadHandler *fd_read,
195 IOEventHandler *fd_event,
198 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
199 /* chr driver being released. */
200 ++s->avail_connections;
202 s->chr_can_read = fd_can_read;
203 s->chr_read = fd_read;
204 s->chr_event = fd_event;
205 s->handler_opaque = opaque;
206 if (s->chr_update_read_handler)
207 s->chr_update_read_handler(s);
209 /* We're connecting to an already opened device, so let's make sure we
210 also get the open event */
212 qemu_chr_generic_open(s);
216 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
221 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
223 CharDriverState *chr;
225 chr = g_malloc0(sizeof(CharDriverState));
226 chr->chr_write = null_chr_write;
230 /* MUX driver for serial I/O splitting */
232 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
233 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
235 IOCanReadHandler *chr_can_read[MAX_MUX];
236 IOReadHandler *chr_read[MAX_MUX];
237 IOEventHandler *chr_event[MAX_MUX];
238 void *ext_opaque[MAX_MUX];
239 CharDriverState *drv;
244 /* Intermediate input buffer allows to catch escape sequences even if the
245 currently active device is not accepting any input - but only until it
247 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
252 int64_t timestamps_start;
256 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
258 MuxDriver *d = chr->opaque;
260 if (!d->timestamps) {
261 ret = d->drv->chr_write(d->drv, buf, len);
266 for (i = 0; i < len; i++) {
272 ti = qemu_get_clock_ms(rt_clock);
273 if (d->timestamps_start == -1)
274 d->timestamps_start = ti;
275 ti -= d->timestamps_start;
277 snprintf(buf1, sizeof(buf1),
278 "[%02d:%02d:%02d.%03d] ",
283 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
286 ret += d->drv->chr_write(d->drv, buf+i, 1);
287 if (buf[i] == '\n') {
295 static const char * const mux_help[] = {
296 "% h print this help\n\r",
297 "% x exit emulator\n\r",
298 "% s save disk data back to file (if -snapshot)\n\r",
299 "% t toggle console timestamps\n\r"
300 "% b send break (magic sysrq)\n\r",
301 "% c switch between console and monitor\n\r",
306 int term_escape_char = 0x01; /* ctrl-a is used for escape */
307 static void mux_print_help(CharDriverState *chr)
310 char ebuf[15] = "Escape-Char";
311 char cbuf[50] = "\n\r";
313 if (term_escape_char > 0 && term_escape_char < 26) {
314 snprintf(cbuf, sizeof(cbuf), "\n\r");
315 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
317 snprintf(cbuf, sizeof(cbuf),
318 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
321 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
322 for (i = 0; mux_help[i] != NULL; i++) {
323 for (j=0; mux_help[i][j] != '\0'; j++) {
324 if (mux_help[i][j] == '%')
325 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
327 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
332 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
334 if (d->chr_event[mux_nr])
335 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
338 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
340 if (d->term_got_escape) {
341 d->term_got_escape = 0;
342 if (ch == term_escape_char)
351 const char *term = "QEMU: Terminated\n\r";
352 chr->chr_write(chr,(uint8_t *)term,strlen(term));
360 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
363 /* Switch to the next registered device */
364 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
366 if (d->focus >= d->mux_cnt)
368 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
371 d->timestamps = !d->timestamps;
372 d->timestamps_start = -1;
376 } else if (ch == term_escape_char) {
377 d->term_got_escape = 1;
385 static void mux_chr_accept_input(CharDriverState *chr)
387 MuxDriver *d = chr->opaque;
390 while (d->prod[m] != d->cons[m] &&
391 d->chr_can_read[m] &&
392 d->chr_can_read[m](d->ext_opaque[m])) {
393 d->chr_read[m](d->ext_opaque[m],
394 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
398 static int mux_chr_can_read(void *opaque)
400 CharDriverState *chr = opaque;
401 MuxDriver *d = chr->opaque;
404 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
406 if (d->chr_can_read[m])
407 return d->chr_can_read[m](d->ext_opaque[m]);
411 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
413 CharDriverState *chr = opaque;
414 MuxDriver *d = chr->opaque;
418 mux_chr_accept_input (opaque);
420 for(i = 0; i < size; i++)
421 if (mux_proc_byte(chr, d, buf[i])) {
422 if (d->prod[m] == d->cons[m] &&
423 d->chr_can_read[m] &&
424 d->chr_can_read[m](d->ext_opaque[m]))
425 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
427 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
431 static void mux_chr_event(void *opaque, int event)
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
437 /* Send the event to all registered listeners */
438 for (i = 0; i < d->mux_cnt; i++)
439 mux_chr_send_event(d, i, event);
442 static void mux_chr_update_read_handler(CharDriverState *chr)
444 MuxDriver *d = chr->opaque;
446 if (d->mux_cnt >= MAX_MUX) {
447 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
450 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
451 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
452 d->chr_read[d->mux_cnt] = chr->chr_read;
453 d->chr_event[d->mux_cnt] = chr->chr_event;
454 /* Fix up the real driver with mux routines */
455 if (d->mux_cnt == 0) {
456 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
459 if (d->focus != -1) {
460 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
462 d->focus = d->mux_cnt;
464 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
467 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
469 CharDriverState *chr;
472 chr = g_malloc0(sizeof(CharDriverState));
473 d = g_malloc0(sizeof(MuxDriver));
478 chr->chr_write = mux_chr_write;
479 chr->chr_update_read_handler = mux_chr_update_read_handler;
480 chr->chr_accept_input = mux_chr_accept_input;
481 /* Frontend guest-open / -close notification is not support with muxes */
482 chr->chr_guest_open = NULL;
483 chr->chr_guest_close = NULL;
485 /* Muxes are always open on creation */
486 qemu_chr_generic_open(chr);
493 int send_all(int fd, const void *buf, int len1)
499 ret = send(fd, buf, len, 0);
501 errno = WSAGetLastError();
502 if (errno != WSAEWOULDBLOCK) {
505 } else if (ret == 0) {
517 int send_all(int fd, const void *_buf, int len1)
520 const uint8_t *buf = _buf;
524 ret = write(fd, buf, len);
526 if (errno != EINTR && errno != EAGAIN)
528 } else if (ret == 0) {
539 #define STDIO_MAX_CLIENTS 1
540 static int stdio_nb_clients;
550 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
552 FDCharDriver *s = chr->opaque;
553 return send_all(s->fd_out, buf, len);
556 static int fd_chr_read_poll(void *opaque)
558 CharDriverState *chr = opaque;
559 FDCharDriver *s = chr->opaque;
561 s->max_size = qemu_chr_be_can_write(chr);
565 static void fd_chr_read(void *opaque)
567 CharDriverState *chr = opaque;
568 FDCharDriver *s = chr->opaque;
570 uint8_t buf[READ_BUF_LEN];
573 if (len > s->max_size)
577 size = read(s->fd_in, buf, len);
579 /* FD has been closed. Remove it from the active list. */
580 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
581 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
585 qemu_chr_be_write(chr, buf, size);
589 static void fd_chr_update_read_handler(CharDriverState *chr)
591 FDCharDriver *s = chr->opaque;
594 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
596 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
597 fd_chr_read, NULL, chr);
602 static void fd_chr_close(struct CharDriverState *chr)
604 FDCharDriver *s = chr->opaque;
607 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
609 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
614 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
617 /* open a character device to a unix fd */
618 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
620 CharDriverState *chr;
623 chr = g_malloc0(sizeof(CharDriverState));
624 s = g_malloc0(sizeof(FDCharDriver));
628 chr->chr_write = fd_chr_write;
629 chr->chr_update_read_handler = fd_chr_update_read_handler;
630 chr->chr_close = fd_chr_close;
632 qemu_chr_generic_open(chr);
637 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
641 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
642 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
646 return qemu_chr_open_fd(-1, fd_out);
649 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
652 char filename_in[256], filename_out[256];
653 const char *filename = qemu_opt_get(opts, "path");
655 if (filename == NULL) {
656 fprintf(stderr, "chardev: pipe: no filename given\n");
660 snprintf(filename_in, 256, "%s.in", filename);
661 snprintf(filename_out, 256, "%s.out", filename);
662 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
663 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
664 if (fd_in < 0 || fd_out < 0) {
669 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
674 return qemu_chr_open_fd(fd_in, fd_out);
678 /* for STDIO, we handle the case where several clients use it
681 #define TERM_FIFO_MAX_SIZE 1
683 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
684 static int term_fifo_size;
686 static int stdio_read_poll(void *opaque)
688 CharDriverState *chr = opaque;
690 /* try to flush the queue if needed */
691 if (term_fifo_size != 0 && qemu_chr_be_can_write(chr) > 0) {
692 qemu_chr_be_write(chr, term_fifo, 1);
695 /* see if we can absorb more chars */
696 if (term_fifo_size == 0)
702 static void stdio_read(void *opaque)
706 CharDriverState *chr = opaque;
708 size = read(0, buf, 1);
710 /* stdin has been closed. Remove it from the active list. */
711 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
712 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
716 if (qemu_chr_be_can_write(chr) > 0) {
717 qemu_chr_be_write(chr, buf, 1);
718 } else if (term_fifo_size == 0) {
719 term_fifo[term_fifo_size++] = buf[0];
724 /* init terminal so that we can grab keys */
725 static struct termios oldtty;
726 static int old_fd0_flags;
727 static bool stdio_allow_signal;
729 static void term_exit(void)
731 tcsetattr (0, TCSANOW, &oldtty);
732 fcntl(0, F_SETFL, old_fd0_flags);
735 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
741 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
742 |INLCR|IGNCR|ICRNL|IXON);
743 tty.c_oflag |= OPOST;
744 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
745 tty.c_cflag &= ~(CSIZE|PARENB);
750 /* if graphical mode, we allow Ctrl-C handling */
751 if (!stdio_allow_signal)
752 tty.c_lflag &= ~ISIG;
754 tcsetattr (0, TCSANOW, &tty);
757 static void qemu_chr_close_stdio(struct CharDriverState *chr)
761 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
765 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
767 CharDriverState *chr;
769 if (stdio_nb_clients >= STDIO_MAX_CLIENTS) {
772 if (stdio_nb_clients == 0) {
773 old_fd0_flags = fcntl(0, F_GETFL);
774 tcgetattr (0, &oldtty);
775 fcntl(0, F_SETFL, O_NONBLOCK);
779 chr = qemu_chr_open_fd(0, 1);
780 chr->chr_close = qemu_chr_close_stdio;
781 chr->chr_set_echo = qemu_chr_set_echo_stdio;
782 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
784 stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
785 display_type != DT_NOGRAPHIC);
786 qemu_chr_fe_set_echo(chr, false);
792 /* Once Solaris has openpty(), this is going to be removed. */
793 static int openpty(int *amaster, int *aslave, char *name,
794 struct termios *termp, struct winsize *winp)
797 int mfd = -1, sfd = -1;
799 *amaster = *aslave = -1;
801 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
805 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
808 if ((slave = ptsname(mfd)) == NULL)
811 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
814 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
815 (termp != NULL && tcgetattr(sfd, termp) < 0))
823 ioctl(sfd, TIOCSWINSZ, winp);
834 static void cfmakeraw (struct termios *termios_p)
836 termios_p->c_iflag &=
837 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
838 termios_p->c_oflag &= ~OPOST;
839 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
840 termios_p->c_cflag &= ~(CSIZE|PARENB);
841 termios_p->c_cflag |= CS8;
843 termios_p->c_cc[VMIN] = 0;
844 termios_p->c_cc[VTIME] = 0;
848 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
849 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
850 || defined(__GLIBC__)
860 static void pty_chr_update_read_handler(CharDriverState *chr);
861 static void pty_chr_state(CharDriverState *chr, int connected);
863 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
865 PtyCharDriver *s = chr->opaque;
868 /* guest sends data, check for (re-)connect */
869 pty_chr_update_read_handler(chr);
872 return send_all(s->fd, buf, len);
875 static int pty_chr_read_poll(void *opaque)
877 CharDriverState *chr = opaque;
878 PtyCharDriver *s = chr->opaque;
880 s->read_bytes = qemu_chr_be_can_write(chr);
881 return s->read_bytes;
884 static void pty_chr_read(void *opaque)
886 CharDriverState *chr = opaque;
887 PtyCharDriver *s = chr->opaque;
889 uint8_t buf[READ_BUF_LEN];
892 if (len > s->read_bytes)
896 size = read(s->fd, buf, len);
897 if ((size == -1 && errno == EIO) ||
899 pty_chr_state(chr, 0);
903 pty_chr_state(chr, 1);
904 qemu_chr_be_write(chr, buf, size);
908 static void pty_chr_update_read_handler(CharDriverState *chr)
910 PtyCharDriver *s = chr->opaque;
912 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
913 pty_chr_read, NULL, chr);
916 * Short timeout here: just need wait long enougth that qemu makes
917 * it through the poll loop once. When reconnected we want a
918 * short timeout so we notice it almost instantly. Otherwise
919 * read() gives us -EIO instantly, making pty_chr_state() reset the
920 * timeout to the normal (much longer) poll interval before the
923 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
926 static void pty_chr_state(CharDriverState *chr, int connected)
928 PtyCharDriver *s = chr->opaque;
931 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
934 /* (re-)connect poll interval for idle guests: once per second.
935 * We check more frequently in case the guests sends data to
936 * the virtual device linked to our pty. */
937 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
940 qemu_chr_generic_open(chr);
945 static void pty_chr_timer(void *opaque)
947 struct CharDriverState *chr = opaque;
948 PtyCharDriver *s = chr->opaque;
953 /* If we arrive here without polling being cleared due
954 * read returning -EIO, then we are (re-)connected */
955 pty_chr_state(chr, 1);
960 pty_chr_update_read_handler(chr);
963 static void pty_chr_close(struct CharDriverState *chr)
965 PtyCharDriver *s = chr->opaque;
967 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
969 qemu_del_timer(s->timer);
970 qemu_free_timer(s->timer);
972 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
975 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
977 CharDriverState *chr;
980 int master_fd, slave_fd, len;
981 #if defined(__OpenBSD__) || defined(__DragonFly__)
982 char pty_name[PATH_MAX];
983 #define q_ptsname(x) pty_name
985 char *pty_name = NULL;
986 #define q_ptsname(x) ptsname(x)
989 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
993 /* Set raw attributes on the pty. */
994 tcgetattr(slave_fd, &tty);
996 tcsetattr(slave_fd, TCSAFLUSH, &tty);
999 chr = g_malloc0(sizeof(CharDriverState));
1001 len = strlen(q_ptsname(master_fd)) + 5;
1002 chr->filename = g_malloc(len);
1003 snprintf(chr->filename, len, "pty:%s", q_ptsname(master_fd));
1004 qemu_opt_set(opts, "path", q_ptsname(master_fd));
1005 fprintf(stderr, "char device redirected to %s\n", q_ptsname(master_fd));
1007 s = g_malloc0(sizeof(PtyCharDriver));
1009 chr->chr_write = pty_chr_write;
1010 chr->chr_update_read_handler = pty_chr_update_read_handler;
1011 chr->chr_close = pty_chr_close;
1014 s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
1019 static void tty_serial_init(int fd, int speed,
1020 int parity, int data_bits, int stop_bits)
1026 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1027 speed, parity, data_bits, stop_bits);
1029 tcgetattr (fd, &tty);
1031 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1032 speed = speed * 10 / 11;
1049 /* Non-Posix values follow. They may be unsupported on some systems. */
1051 check_speed(115200);
1053 check_speed(230400);
1056 check_speed(460800);
1059 check_speed(500000);
1062 check_speed(576000);
1065 check_speed(921600);
1068 check_speed(1000000);
1071 check_speed(1152000);
1074 check_speed(1500000);
1077 check_speed(2000000);
1080 check_speed(2500000);
1083 check_speed(3000000);
1086 check_speed(3500000);
1089 check_speed(4000000);
1094 cfsetispeed(&tty, spd);
1095 cfsetospeed(&tty, spd);
1097 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1098 |INLCR|IGNCR|ICRNL|IXON);
1099 tty.c_oflag |= OPOST;
1100 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1101 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1122 tty.c_cflag |= PARENB;
1125 tty.c_cflag |= PARENB | PARODD;
1129 tty.c_cflag |= CSTOPB;
1131 tcsetattr (fd, TCSANOW, &tty);
1134 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1136 FDCharDriver *s = chr->opaque;
1139 case CHR_IOCTL_SERIAL_SET_PARAMS:
1141 QEMUSerialSetParams *ssp = arg;
1142 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1143 ssp->data_bits, ssp->stop_bits);
1146 case CHR_IOCTL_SERIAL_SET_BREAK:
1148 int enable = *(int *)arg;
1150 tcsendbreak(s->fd_in, 1);
1153 case CHR_IOCTL_SERIAL_GET_TIOCM:
1156 int *targ = (int *)arg;
1157 ioctl(s->fd_in, TIOCMGET, &sarg);
1159 if (sarg & TIOCM_CTS)
1160 *targ |= CHR_TIOCM_CTS;
1161 if (sarg & TIOCM_CAR)
1162 *targ |= CHR_TIOCM_CAR;
1163 if (sarg & TIOCM_DSR)
1164 *targ |= CHR_TIOCM_DSR;
1165 if (sarg & TIOCM_RI)
1166 *targ |= CHR_TIOCM_RI;
1167 if (sarg & TIOCM_DTR)
1168 *targ |= CHR_TIOCM_DTR;
1169 if (sarg & TIOCM_RTS)
1170 *targ |= CHR_TIOCM_RTS;
1173 case CHR_IOCTL_SERIAL_SET_TIOCM:
1175 int sarg = *(int *)arg;
1177 ioctl(s->fd_in, TIOCMGET, &targ);
1178 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1179 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1180 if (sarg & CHR_TIOCM_CTS)
1182 if (sarg & CHR_TIOCM_CAR)
1184 if (sarg & CHR_TIOCM_DSR)
1186 if (sarg & CHR_TIOCM_RI)
1188 if (sarg & CHR_TIOCM_DTR)
1190 if (sarg & CHR_TIOCM_RTS)
1192 ioctl(s->fd_in, TIOCMSET, &targ);
1201 static void qemu_chr_close_tty(CharDriverState *chr)
1203 FDCharDriver *s = chr->opaque;
1217 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1219 const char *filename = qemu_opt_get(opts, "path");
1220 CharDriverState *chr;
1223 TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK));
1227 tty_serial_init(fd, 115200, 'N', 8, 1);
1228 chr = qemu_chr_open_fd(fd, fd);
1229 chr->chr_ioctl = tty_serial_ioctl;
1230 chr->chr_close = qemu_chr_close_tty;
1233 #else /* ! __linux__ && ! __sun__ */
1234 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1238 #endif /* __linux__ || __sun__ */
1240 #if defined(__linux__)
1244 } ParallelCharDriver;
1246 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1248 if (s->mode != mode) {
1250 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1257 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1259 ParallelCharDriver *drv = chr->opaque;
1264 case CHR_IOCTL_PP_READ_DATA:
1265 if (ioctl(fd, PPRDATA, &b) < 0)
1267 *(uint8_t *)arg = b;
1269 case CHR_IOCTL_PP_WRITE_DATA:
1270 b = *(uint8_t *)arg;
1271 if (ioctl(fd, PPWDATA, &b) < 0)
1274 case CHR_IOCTL_PP_READ_CONTROL:
1275 if (ioctl(fd, PPRCONTROL, &b) < 0)
1277 /* Linux gives only the lowest bits, and no way to know data
1278 direction! For better compatibility set the fixed upper
1280 *(uint8_t *)arg = b | 0xc0;
1282 case CHR_IOCTL_PP_WRITE_CONTROL:
1283 b = *(uint8_t *)arg;
1284 if (ioctl(fd, PPWCONTROL, &b) < 0)
1287 case CHR_IOCTL_PP_READ_STATUS:
1288 if (ioctl(fd, PPRSTATUS, &b) < 0)
1290 *(uint8_t *)arg = b;
1292 case CHR_IOCTL_PP_DATA_DIR:
1293 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1296 case CHR_IOCTL_PP_EPP_READ_ADDR:
1297 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1298 struct ParallelIOArg *parg = arg;
1299 int n = read(fd, parg->buffer, parg->count);
1300 if (n != parg->count) {
1305 case CHR_IOCTL_PP_EPP_READ:
1306 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1307 struct ParallelIOArg *parg = arg;
1308 int n = read(fd, parg->buffer, parg->count);
1309 if (n != parg->count) {
1314 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1315 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1316 struct ParallelIOArg *parg = arg;
1317 int n = write(fd, parg->buffer, parg->count);
1318 if (n != parg->count) {
1323 case CHR_IOCTL_PP_EPP_WRITE:
1324 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1325 struct ParallelIOArg *parg = arg;
1326 int n = write(fd, parg->buffer, parg->count);
1327 if (n != parg->count) {
1338 static void pp_close(CharDriverState *chr)
1340 ParallelCharDriver *drv = chr->opaque;
1343 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1344 ioctl(fd, PPRELEASE);
1347 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1350 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1352 const char *filename = qemu_opt_get(opts, "path");
1353 CharDriverState *chr;
1354 ParallelCharDriver *drv;
1357 TFR(fd = qemu_open(filename, O_RDWR));
1362 if (ioctl(fd, PPCLAIM) < 0) {
1367 drv = g_malloc0(sizeof(ParallelCharDriver));
1369 drv->mode = IEEE1284_MODE_COMPAT;
1371 chr = g_malloc0(sizeof(CharDriverState));
1372 chr->chr_write = null_chr_write;
1373 chr->chr_ioctl = pp_ioctl;
1374 chr->chr_close = pp_close;
1377 qemu_chr_generic_open(chr);
1381 #endif /* __linux__ */
1383 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1384 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1386 int fd = (int)(intptr_t)chr->opaque;
1390 case CHR_IOCTL_PP_READ_DATA:
1391 if (ioctl(fd, PPIGDATA, &b) < 0)
1393 *(uint8_t *)arg = b;
1395 case CHR_IOCTL_PP_WRITE_DATA:
1396 b = *(uint8_t *)arg;
1397 if (ioctl(fd, PPISDATA, &b) < 0)
1400 case CHR_IOCTL_PP_READ_CONTROL:
1401 if (ioctl(fd, PPIGCTRL, &b) < 0)
1403 *(uint8_t *)arg = b;
1405 case CHR_IOCTL_PP_WRITE_CONTROL:
1406 b = *(uint8_t *)arg;
1407 if (ioctl(fd, PPISCTRL, &b) < 0)
1410 case CHR_IOCTL_PP_READ_STATUS:
1411 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1413 *(uint8_t *)arg = b;
1421 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1423 const char *filename = qemu_opt_get(opts, "path");
1424 CharDriverState *chr;
1427 fd = qemu_open(filename, O_RDWR);
1432 chr = g_malloc0(sizeof(CharDriverState));
1433 chr->opaque = (void *)(intptr_t)fd;
1434 chr->chr_write = null_chr_write;
1435 chr->chr_ioctl = pp_ioctl;
1442 static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];
1446 HANDLE hcom, hrecv, hsend;
1447 OVERLAPPED orecv, osend;
1454 HANDLE hInputReadyEvent;
1455 HANDLE hInputDoneEvent;
1456 HANDLE hInputThread;
1457 uint8_t win_stdio_buf;
1458 } WinStdioCharState;
1460 #define NSENDBUF 2048
1461 #define NRECVBUF 2048
1462 #define MAXCONNECT 1
1463 #define NTIMEOUT 5000
1465 static int win_chr_poll(void *opaque);
1466 static int win_chr_pipe_poll(void *opaque);
1468 static void win_chr_close(CharDriverState *chr)
1470 WinCharState *s = chr->opaque;
1473 CloseHandle(s->hsend);
1477 CloseHandle(s->hrecv);
1481 CloseHandle(s->hcom);
1485 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1487 qemu_del_polling_cb(win_chr_poll, chr);
1489 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1492 static int win_chr_init(CharDriverState *chr, const char *filename)
1494 WinCharState *s = chr->opaque;
1496 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1501 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1503 fprintf(stderr, "Failed CreateEvent\n");
1506 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1508 fprintf(stderr, "Failed CreateEvent\n");
1512 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1513 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1514 if (s->hcom == INVALID_HANDLE_VALUE) {
1515 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1520 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1521 fprintf(stderr, "Failed SetupComm\n");
1525 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1526 size = sizeof(COMMCONFIG);
1527 GetDefaultCommConfig(filename, &comcfg, &size);
1528 comcfg.dcb.DCBlength = sizeof(DCB);
1529 CommConfigDialog(filename, NULL, &comcfg);
1531 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1532 fprintf(stderr, "Failed SetCommState\n");
1536 if (!SetCommMask(s->hcom, EV_ERR)) {
1537 fprintf(stderr, "Failed SetCommMask\n");
1541 cto.ReadIntervalTimeout = MAXDWORD;
1542 if (!SetCommTimeouts(s->hcom, &cto)) {
1543 fprintf(stderr, "Failed SetCommTimeouts\n");
1547 if (!ClearCommError(s->hcom, &err, &comstat)) {
1548 fprintf(stderr, "Failed ClearCommError\n");
1551 qemu_add_polling_cb(win_chr_poll, chr);
1559 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1561 WinCharState *s = chr->opaque;
1562 DWORD len, ret, size, err;
1565 ZeroMemory(&s->osend, sizeof(s->osend));
1566 s->osend.hEvent = s->hsend;
1569 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1571 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1573 err = GetLastError();
1574 if (err == ERROR_IO_PENDING) {
1575 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1593 static int win_chr_read_poll(CharDriverState *chr)
1595 WinCharState *s = chr->opaque;
1597 s->max_size = qemu_chr_be_can_write(chr);
1601 static void win_chr_readfile(CharDriverState *chr)
1603 WinCharState *s = chr->opaque;
1605 uint8_t buf[READ_BUF_LEN];
1608 ZeroMemory(&s->orecv, sizeof(s->orecv));
1609 s->orecv.hEvent = s->hrecv;
1610 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1612 err = GetLastError();
1613 if (err == ERROR_IO_PENDING) {
1614 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1619 qemu_chr_be_write(chr, buf, size);
1623 static void win_chr_read(CharDriverState *chr)
1625 WinCharState *s = chr->opaque;
1627 if (s->len > s->max_size)
1628 s->len = s->max_size;
1632 win_chr_readfile(chr);
1635 static int win_chr_poll(void *opaque)
1637 CharDriverState *chr = opaque;
1638 WinCharState *s = chr->opaque;
1642 ClearCommError(s->hcom, &comerr, &status);
1643 if (status.cbInQue > 0) {
1644 s->len = status.cbInQue;
1645 win_chr_read_poll(chr);
1652 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1654 const char *filename = qemu_opt_get(opts, "path");
1655 CharDriverState *chr;
1658 chr = g_malloc0(sizeof(CharDriverState));
1659 s = g_malloc0(sizeof(WinCharState));
1661 chr->chr_write = win_chr_write;
1662 chr->chr_close = win_chr_close;
1664 if (win_chr_init(chr, filename) < 0) {
1669 qemu_chr_generic_open(chr);
1673 static int win_chr_pipe_poll(void *opaque)
1675 CharDriverState *chr = opaque;
1676 WinCharState *s = chr->opaque;
1679 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1682 win_chr_read_poll(chr);
1689 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1691 WinCharState *s = chr->opaque;
1699 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1701 fprintf(stderr, "Failed CreateEvent\n");
1704 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1706 fprintf(stderr, "Failed CreateEvent\n");
1710 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1711 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1712 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1714 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1715 if (s->hcom == INVALID_HANDLE_VALUE) {
1716 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1721 ZeroMemory(&ov, sizeof(ov));
1722 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1723 ret = ConnectNamedPipe(s->hcom, &ov);
1725 fprintf(stderr, "Failed ConnectNamedPipe\n");
1729 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1731 fprintf(stderr, "Failed GetOverlappedResult\n");
1733 CloseHandle(ov.hEvent);
1740 CloseHandle(ov.hEvent);
1743 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1752 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1754 const char *filename = qemu_opt_get(opts, "path");
1755 CharDriverState *chr;
1758 chr = g_malloc0(sizeof(CharDriverState));
1759 s = g_malloc0(sizeof(WinCharState));
1761 chr->chr_write = win_chr_write;
1762 chr->chr_close = win_chr_close;
1764 if (win_chr_pipe_init(chr, filename) < 0) {
1769 qemu_chr_generic_open(chr);
1773 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1775 CharDriverState *chr;
1778 chr = g_malloc0(sizeof(CharDriverState));
1779 s = g_malloc0(sizeof(WinCharState));
1782 chr->chr_write = win_chr_write;
1783 qemu_chr_generic_open(chr);
1787 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1789 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1792 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1794 const char *file_out = qemu_opt_get(opts, "path");
1797 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1798 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1799 if (fd_out == INVALID_HANDLE_VALUE) {
1803 return qemu_chr_open_win_file(fd_out);
1806 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1808 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1815 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1825 static void win_stdio_wait_func(void *opaque)
1827 CharDriverState *chr = opaque;
1828 WinStdioCharState *stdio = chr->opaque;
1829 INPUT_RECORD buf[4];
1834 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1838 /* Avoid error storm */
1839 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1843 for (i = 0; i < dwSize; i++) {
1844 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
1846 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
1848 if (kev->uChar.AsciiChar != 0) {
1849 for (j = 0; j < kev->wRepeatCount; j++) {
1850 if (qemu_chr_be_can_write(chr)) {
1851 uint8_t c = kev->uChar.AsciiChar;
1852 qemu_chr_be_write(chr, &c, 1);
1860 static DWORD WINAPI win_stdio_thread(LPVOID param)
1862 CharDriverState *chr = param;
1863 WinStdioCharState *stdio = chr->opaque;
1869 /* Wait for one byte */
1870 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
1872 /* Exit in case of error, continue if nothing read */
1880 /* Some terminal emulator returns \r\n for Enter, just pass \n */
1881 if (stdio->win_stdio_buf == '\r') {
1885 /* Signal the main thread and wait until the byte was eaten */
1886 if (!SetEvent(stdio->hInputReadyEvent)) {
1889 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
1895 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
1899 static void win_stdio_thread_wait_func(void *opaque)
1901 CharDriverState *chr = opaque;
1902 WinStdioCharState *stdio = chr->opaque;
1904 if (qemu_chr_be_can_write(chr)) {
1905 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
1908 SetEvent(stdio->hInputDoneEvent);
1911 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
1913 WinStdioCharState *stdio = chr->opaque;
1916 GetConsoleMode(stdio->hStdIn, &dwMode);
1919 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
1921 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
1925 static void win_stdio_close(CharDriverState *chr)
1927 WinStdioCharState *stdio = chr->opaque;
1929 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
1930 CloseHandle(stdio->hInputReadyEvent);
1932 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
1933 CloseHandle(stdio->hInputDoneEvent);
1935 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
1936 TerminateThread(stdio->hInputThread, 0);
1939 g_free(chr->opaque);
1944 static CharDriverState *qemu_chr_open_win_stdio(QemuOpts *opts)
1946 CharDriverState *chr;
1947 WinStdioCharState *stdio;
1951 if (stdio_nb_clients >= STDIO_MAX_CLIENTS
1952 || ((display_type != DT_NOGRAPHIC) && (stdio_nb_clients != 0))) {
1956 chr = g_malloc0(sizeof(CharDriverState));
1957 stdio = g_malloc0(sizeof(WinStdioCharState));
1959 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
1960 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
1961 fprintf(stderr, "cannot open stdio: invalid handle\n");
1965 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
1967 chr->opaque = stdio;
1968 chr->chr_write = win_stdio_write;
1969 chr->chr_close = win_stdio_close;
1971 if (stdio_nb_clients == 0) {
1973 if (qemu_add_wait_object(stdio->hStdIn,
1974 win_stdio_wait_func, chr)) {
1975 fprintf(stderr, "qemu_add_wait_object: failed\n");
1980 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
1981 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
1982 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
1985 if (stdio->hInputThread == INVALID_HANDLE_VALUE
1986 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
1987 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
1988 fprintf(stderr, "cannot create stdio thread or event\n");
1991 if (qemu_add_wait_object(stdio->hInputReadyEvent,
1992 win_stdio_thread_wait_func, chr)) {
1993 fprintf(stderr, "qemu_add_wait_object: failed\n");
1998 dwMode |= ENABLE_LINE_INPUT;
2000 stdio_clients[stdio_nb_clients++] = chr;
2001 if (stdio_nb_clients == 1 && is_console) {
2002 /* set the terminal in raw mode */
2003 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2004 dwMode |= ENABLE_PROCESSED_INPUT;
2007 SetConsoleMode(stdio->hStdIn, dwMode);
2009 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2010 qemu_chr_fe_set_echo(chr, false);
2014 #endif /* !_WIN32 */
2016 /***********************************************************/
2017 /* UDP Net console */
2021 uint8_t buf[READ_BUF_LEN];
2027 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2029 NetCharDriver *s = chr->opaque;
2031 return send(s->fd, (const void *)buf, len, 0);
2034 static int udp_chr_read_poll(void *opaque)
2036 CharDriverState *chr = opaque;
2037 NetCharDriver *s = chr->opaque;
2039 s->max_size = qemu_chr_be_can_write(chr);
2041 /* If there were any stray characters in the queue process them
2044 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2045 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2047 s->max_size = qemu_chr_be_can_write(chr);
2052 static void udp_chr_read(void *opaque)
2054 CharDriverState *chr = opaque;
2055 NetCharDriver *s = chr->opaque;
2057 if (s->max_size == 0)
2059 s->bufcnt = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0);
2060 s->bufptr = s->bufcnt;
2065 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2066 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2068 s->max_size = qemu_chr_be_can_write(chr);
2072 static void udp_chr_update_read_handler(CharDriverState *chr)
2074 NetCharDriver *s = chr->opaque;
2077 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
2078 udp_chr_read, NULL, chr);
2082 static void udp_chr_close(CharDriverState *chr)
2084 NetCharDriver *s = chr->opaque;
2086 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2090 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2093 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2095 CharDriverState *chr = NULL;
2096 NetCharDriver *s = NULL;
2099 chr = g_malloc0(sizeof(CharDriverState));
2100 s = g_malloc0(sizeof(NetCharDriver));
2102 fd = inet_dgram_opts(opts);
2104 fprintf(stderr, "inet_dgram_opts failed\n");
2112 chr->chr_write = udp_chr_write;
2113 chr->chr_update_read_handler = udp_chr_update_read_handler;
2114 chr->chr_close = udp_chr_close;
2126 /***********************************************************/
2127 /* TCP Net console */
2139 static void tcp_chr_accept(void *opaque);
2141 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2143 TCPCharDriver *s = chr->opaque;
2145 return send_all(s->fd, buf, len);
2147 /* XXX: indicate an error ? */
2152 static int tcp_chr_read_poll(void *opaque)
2154 CharDriverState *chr = opaque;
2155 TCPCharDriver *s = chr->opaque;
2158 s->max_size = qemu_chr_be_can_write(chr);
2163 #define IAC_BREAK 243
2164 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2166 uint8_t *buf, int *size)
2168 /* Handle any telnet client's basic IAC options to satisfy char by
2169 * char mode with no echo. All IAC options will be removed from
2170 * the buf and the do_telnetopt variable will be used to track the
2171 * state of the width of the IAC information.
2173 * IAC commands come in sets of 3 bytes with the exception of the
2174 * "IAC BREAK" command and the double IAC.
2180 for (i = 0; i < *size; i++) {
2181 if (s->do_telnetopt > 1) {
2182 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2183 /* Double IAC means send an IAC */
2187 s->do_telnetopt = 1;
2189 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2190 /* Handle IAC break commands by sending a serial break */
2191 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2196 if (s->do_telnetopt >= 4) {
2197 s->do_telnetopt = 1;
2200 if ((unsigned char)buf[i] == IAC) {
2201 s->do_telnetopt = 2;
2212 static int tcp_get_msgfd(CharDriverState *chr)
2214 TCPCharDriver *s = chr->opaque;
2221 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2223 TCPCharDriver *s = chr->opaque;
2224 struct cmsghdr *cmsg;
2226 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2229 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2230 cmsg->cmsg_level != SOL_SOCKET ||
2231 cmsg->cmsg_type != SCM_RIGHTS)
2234 fd = *((int *)CMSG_DATA(cmsg));
2244 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2246 TCPCharDriver *s = chr->opaque;
2247 struct msghdr msg = { NULL, };
2248 struct iovec iov[1];
2250 struct cmsghdr cmsg;
2251 char control[CMSG_SPACE(sizeof(int))];
2255 iov[0].iov_base = buf;
2256 iov[0].iov_len = len;
2260 msg.msg_control = &msg_control;
2261 msg.msg_controllen = sizeof(msg_control);
2263 ret = recvmsg(s->fd, &msg, 0);
2264 if (ret > 0 && s->is_unix)
2265 unix_process_msgfd(chr, &msg);
2270 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2272 TCPCharDriver *s = chr->opaque;
2273 return qemu_recv(s->fd, buf, len, 0);
2277 static void tcp_chr_read(void *opaque)
2279 CharDriverState *chr = opaque;
2280 TCPCharDriver *s = chr->opaque;
2281 uint8_t buf[READ_BUF_LEN];
2284 if (!s->connected || s->max_size <= 0)
2287 if (len > s->max_size)
2289 size = tcp_chr_recv(chr, (void *)buf, len);
2291 /* connection closed */
2293 if (s->listen_fd >= 0) {
2294 qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
2296 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2299 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2300 } else if (size > 0) {
2301 if (s->do_telnetopt)
2302 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2304 qemu_chr_be_write(chr, buf, size);
2309 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2311 return qemu_chr_open_fd(eventfd, eventfd);
2315 static void tcp_chr_connect(void *opaque)
2317 CharDriverState *chr = opaque;
2318 TCPCharDriver *s = chr->opaque;
2321 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2322 tcp_chr_read, NULL, chr);
2323 qemu_chr_generic_open(chr);
2326 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2327 static void tcp_chr_telnet_init(int fd)
2330 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2331 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2332 send(fd, (char *)buf, 3, 0);
2333 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2334 send(fd, (char *)buf, 3, 0);
2335 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2336 send(fd, (char *)buf, 3, 0);
2337 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2338 send(fd, (char *)buf, 3, 0);
2341 static void socket_set_nodelay(int fd)
2344 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2347 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2349 TCPCharDriver *s = chr->opaque;
2353 socket_set_nonblock(fd);
2355 socket_set_nodelay(fd);
2357 qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
2358 tcp_chr_connect(chr);
2363 static void tcp_chr_accept(void *opaque)
2365 CharDriverState *chr = opaque;
2366 TCPCharDriver *s = chr->opaque;
2367 struct sockaddr_in saddr;
2369 struct sockaddr_un uaddr;
2371 struct sockaddr *addr;
2378 len = sizeof(uaddr);
2379 addr = (struct sockaddr *)&uaddr;
2383 len = sizeof(saddr);
2384 addr = (struct sockaddr *)&saddr;
2386 fd = qemu_accept(s->listen_fd, addr, &len);
2387 if (fd < 0 && errno != EINTR) {
2389 } else if (fd >= 0) {
2390 if (s->do_telnetopt)
2391 tcp_chr_telnet_init(fd);
2395 if (tcp_chr_add_client(chr, fd) < 0)
2399 static void tcp_chr_close(CharDriverState *chr)
2401 TCPCharDriver *s = chr->opaque;
2403 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2406 if (s->listen_fd >= 0) {
2407 qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
2408 closesocket(s->listen_fd);
2411 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2414 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2416 CharDriverState *chr = NULL;
2417 TCPCharDriver *s = NULL;
2425 is_listen = qemu_opt_get_bool(opts, "server", 0);
2426 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2427 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2428 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2429 is_unix = qemu_opt_get(opts, "path") != NULL;
2433 chr = g_malloc0(sizeof(CharDriverState));
2434 s = g_malloc0(sizeof(TCPCharDriver));
2438 fd = unix_listen_opts(opts);
2440 fd = unix_connect_opts(opts);
2444 fd = inet_listen_opts(opts, 0);
2446 fd = inet_connect_opts(opts);
2453 if (!is_waitconnect)
2454 socket_set_nonblock(fd);
2460 s->is_unix = is_unix;
2461 s->do_nodelay = do_nodelay && !is_unix;
2464 chr->chr_write = tcp_chr_write;
2465 chr->chr_close = tcp_chr_close;
2466 chr->get_msgfd = tcp_get_msgfd;
2467 chr->chr_add_client = tcp_chr_add_client;
2471 qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
2473 s->do_telnetopt = 1;
2478 socket_set_nodelay(fd);
2479 tcp_chr_connect(chr);
2482 /* for "info chardev" monitor command */
2483 chr->filename = g_malloc(256);
2485 snprintf(chr->filename, 256, "unix:%s%s",
2486 qemu_opt_get(opts, "path"),
2487 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2488 } else if (is_telnet) {
2489 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2490 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2491 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2493 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2494 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2495 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2498 if (is_listen && is_waitconnect) {
2499 printf("QEMU waiting for connection on: %s\n",
2501 tcp_chr_accept(chr);
2502 socket_set_nonblock(s->listen_fd);
2514 /***********************************************************/
2515 /* Memory chardev */
2518 size_t outbuf_capacity;
2522 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2524 MemoryDriver *d = chr->opaque;
2526 /* TODO: the QString implementation has the same code, we should
2527 * introduce a generic way to do this in cutils.c */
2528 if (d->outbuf_capacity < d->outbuf_size + len) {
2530 d->outbuf_capacity += len;
2531 d->outbuf_capacity *= 2;
2532 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2535 memcpy(d->outbuf + d->outbuf_size, buf, len);
2536 d->outbuf_size += len;
2541 void qemu_chr_init_mem(CharDriverState *chr)
2545 d = g_malloc(sizeof(*d));
2547 d->outbuf_capacity = 4096;
2548 d->outbuf = g_malloc0(d->outbuf_capacity);
2550 memset(chr, 0, sizeof(*chr));
2552 chr->chr_write = mem_chr_write;
2555 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2557 MemoryDriver *d = chr->opaque;
2558 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2561 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2562 void qemu_chr_close_mem(CharDriverState *chr)
2564 MemoryDriver *d = chr->opaque;
2567 g_free(chr->opaque);
2569 chr->chr_write = NULL;
2572 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2574 const MemoryDriver *d = chr->opaque;
2575 return d->outbuf_size;
2578 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2580 char host[65], port[33], width[8], height[8];
2585 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2589 if (strstart(filename, "mon:", &p)) {
2591 qemu_opt_set(opts, "mux", "on");
2594 if (strcmp(filename, "null") == 0 ||
2595 strcmp(filename, "pty") == 0 ||
2596 strcmp(filename, "msmouse") == 0 ||
2597 strcmp(filename, "braille") == 0 ||
2598 strcmp(filename, "stdio") == 0) {
2599 qemu_opt_set(opts, "backend", filename);
2602 if (strstart(filename, "vc", &p)) {
2603 qemu_opt_set(opts, "backend", "vc");
2605 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2607 qemu_opt_set(opts, "width", width);
2608 qemu_opt_set(opts, "height", height);
2609 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2611 qemu_opt_set(opts, "cols", width);
2612 qemu_opt_set(opts, "rows", height);
2619 if (strcmp(filename, "con:") == 0) {
2620 qemu_opt_set(opts, "backend", "console");
2623 if (strstart(filename, "COM", NULL)) {
2624 qemu_opt_set(opts, "backend", "serial");
2625 qemu_opt_set(opts, "path", filename);
2628 if (strstart(filename, "file:", &p)) {
2629 qemu_opt_set(opts, "backend", "file");
2630 qemu_opt_set(opts, "path", p);
2633 if (strstart(filename, "pipe:", &p)) {
2634 qemu_opt_set(opts, "backend", "pipe");
2635 qemu_opt_set(opts, "path", p);
2638 if (strstart(filename, "tcp:", &p) ||
2639 strstart(filename, "telnet:", &p)) {
2640 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2642 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2645 qemu_opt_set(opts, "backend", "socket");
2646 qemu_opt_set(opts, "host", host);
2647 qemu_opt_set(opts, "port", port);
2648 if (p[pos] == ',') {
2649 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2652 if (strstart(filename, "telnet:", &p))
2653 qemu_opt_set(opts, "telnet", "on");
2656 if (strstart(filename, "udp:", &p)) {
2657 qemu_opt_set(opts, "backend", "udp");
2658 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2660 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2664 qemu_opt_set(opts, "host", host);
2665 qemu_opt_set(opts, "port", port);
2666 if (p[pos] == '@') {
2668 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2670 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2674 qemu_opt_set(opts, "localaddr", host);
2675 qemu_opt_set(opts, "localport", port);
2679 if (strstart(filename, "unix:", &p)) {
2680 qemu_opt_set(opts, "backend", "socket");
2681 if (qemu_opts_do_parse(opts, p, "path") != 0)
2685 if (strstart(filename, "/dev/parport", NULL) ||
2686 strstart(filename, "/dev/ppi", NULL)) {
2687 qemu_opt_set(opts, "backend", "parport");
2688 qemu_opt_set(opts, "path", filename);
2691 if (strstart(filename, "/dev/", NULL)) {
2692 qemu_opt_set(opts, "backend", "tty");
2693 qemu_opt_set(opts, "path", filename);
2698 qemu_opts_del(opts);
2702 static const struct {
2704 CharDriverState *(*open)(QemuOpts *opts);
2705 } backend_table[] = {
2706 { .name = "null", .open = qemu_chr_open_null },
2707 { .name = "socket", .open = qemu_chr_open_socket },
2708 { .name = "udp", .open = qemu_chr_open_udp },
2709 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2710 { .name = "vc", .open = text_console_init },
2712 { .name = "file", .open = qemu_chr_open_win_file_out },
2713 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2714 { .name = "console", .open = qemu_chr_open_win_con },
2715 { .name = "serial", .open = qemu_chr_open_win },
2716 { .name = "stdio", .open = qemu_chr_open_win_stdio },
2718 { .name = "file", .open = qemu_chr_open_file_out },
2719 { .name = "pipe", .open = qemu_chr_open_pipe },
2720 { .name = "pty", .open = qemu_chr_open_pty },
2721 { .name = "stdio", .open = qemu_chr_open_stdio },
2723 #ifdef CONFIG_BRLAPI
2724 { .name = "braille", .open = chr_baum_init },
2726 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2727 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2728 || defined(__FreeBSD_kernel__)
2729 { .name = "tty", .open = qemu_chr_open_tty },
2731 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2732 || defined(__FreeBSD_kernel__)
2733 { .name = "parport", .open = qemu_chr_open_pp },
2736 { .name = "spicevmc", .open = qemu_chr_open_spice },
2740 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
2741 void (*init)(struct CharDriverState *s))
2743 CharDriverState *chr;
2746 if (qemu_opts_id(opts) == NULL) {
2747 fprintf(stderr, "chardev: no id specified\n");
2751 if (qemu_opt_get(opts, "backend") == NULL) {
2752 fprintf(stderr, "chardev: \"%s\" missing backend\n",
2753 qemu_opts_id(opts));
2756 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2757 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2760 if (i == ARRAY_SIZE(backend_table)) {
2761 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2762 qemu_opt_get(opts, "backend"));
2766 chr = backend_table[i].open(opts);
2768 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2769 qemu_opt_get(opts, "backend"));
2774 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
2776 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2778 if (qemu_opt_get_bool(opts, "mux", 0)) {
2779 CharDriverState *base = chr;
2780 int len = strlen(qemu_opts_id(opts)) + 6;
2781 base->label = g_malloc(len);
2782 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2783 chr = qemu_chr_open_mux(base);
2784 chr->filename = base->filename;
2785 chr->avail_connections = MAX_MUX;
2786 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2788 chr->avail_connections = 1;
2790 chr->label = g_strdup(qemu_opts_id(opts));
2794 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2797 CharDriverState *chr;
2800 if (strstart(filename, "chardev:", &p)) {
2801 return qemu_chr_find(p);
2804 opts = qemu_chr_parse_compat(label, filename);
2808 chr = qemu_chr_new_from_opts(opts, init);
2809 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2810 monitor_init(chr, MONITOR_USE_READLINE);
2812 qemu_opts_del(opts);
2816 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
2818 if (chr->chr_set_echo) {
2819 chr->chr_set_echo(chr, echo);
2823 void qemu_chr_fe_open(struct CharDriverState *chr)
2825 if (chr->chr_guest_open) {
2826 chr->chr_guest_open(chr);
2830 void qemu_chr_fe_close(struct CharDriverState *chr)
2832 if (chr->chr_guest_close) {
2833 chr->chr_guest_close(chr);
2837 void qemu_chr_delete(CharDriverState *chr)
2839 QTAILQ_REMOVE(&chardevs, chr, next);
2841 chr->chr_close(chr);
2842 g_free(chr->filename);
2847 ChardevInfoList *qmp_query_chardev(Error **errp)
2849 ChardevInfoList *chr_list = NULL;
2850 CharDriverState *chr;
2852 QTAILQ_FOREACH(chr, &chardevs, next) {
2853 ChardevInfoList *info = g_malloc0(sizeof(*info));
2854 info->value = g_malloc0(sizeof(*info->value));
2855 info->value->label = g_strdup(chr->label);
2856 info->value->filename = g_strdup(chr->filename);
2858 info->next = chr_list;
2865 CharDriverState *qemu_chr_find(const char *name)
2867 CharDriverState *chr;
2869 QTAILQ_FOREACH(chr, &chardevs, next) {
2870 if (strcmp(chr->label, name) != 0)
2877 /* Get a character (serial) device interface. */
2878 CharDriverState *qemu_char_get_next_serial(void)
2880 static int next_serial;
2882 /* FIXME: This function needs to go away: use chardev properties! */
2883 return serial_hds[next_serial++];