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 "qemu-objects.h"
45 #include <sys/times.h>
49 #include <sys/ioctl.h>
50 #include <sys/resource.h>
51 #include <sys/socket.h>
52 #include <netinet/in.h>
54 #include <arpa/inet.h>
57 #include <sys/select.h>
60 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
62 #include <dev/ppbus/ppi.h>
63 #include <dev/ppbus/ppbconf.h>
64 #if defined(__GLIBC__)
67 #elif defined(__DragonFly__)
69 #include <dev/misc/ppi/ppi.h>
70 #include <bus/ppbus/ppbconf.h>
78 #include <linux/ppdev.h>
79 #include <linux/parport.h>
83 #include <sys/ethernet.h>
84 #include <sys/sockio.h>
85 #include <netinet/arp.h>
86 #include <netinet/in.h>
87 #include <netinet/in_systm.h>
88 #include <netinet/ip.h>
89 #include <netinet/ip_icmp.h> // must come after ip.h
90 #include <netinet/udp.h>
91 #include <netinet/tcp.h>
99 #include "qemu_socket.h"
100 #include "ui/qemu-spice.h"
102 #define READ_BUF_LEN 4096
104 /***********************************************************/
105 /* character device */
107 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
108 QTAILQ_HEAD_INITIALIZER(chardevs);
110 static void qemu_chr_event(CharDriverState *s, int event)
112 /* Keep track if the char device is open */
114 case CHR_EVENT_OPENED:
117 case CHR_EVENT_CLOSED:
124 s->chr_event(s->handler_opaque, event);
127 static void qemu_chr_generic_open_bh(void *opaque)
129 CharDriverState *s = opaque;
130 qemu_chr_event(s, CHR_EVENT_OPENED);
131 qemu_bh_delete(s->bh);
135 void qemu_chr_generic_open(CharDriverState *s)
138 s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
139 qemu_bh_schedule(s->bh);
143 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
145 return s->chr_write(s, buf, len);
148 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
152 return s->chr_ioctl(s, cmd, arg);
155 int qemu_chr_can_read(CharDriverState *s)
157 if (!s->chr_can_read)
159 return s->chr_can_read(s->handler_opaque);
162 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
164 s->chr_read(s->handler_opaque, buf, len);
167 int qemu_chr_get_msgfd(CharDriverState *s)
169 return s->get_msgfd ? s->get_msgfd(s) : -1;
172 void qemu_chr_accept_input(CharDriverState *s)
174 if (s->chr_accept_input)
175 s->chr_accept_input(s);
178 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
180 char buf[READ_BUF_LEN];
183 vsnprintf(buf, sizeof(buf), fmt, ap);
184 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
188 void qemu_chr_send_event(CharDriverState *s, int event)
190 if (s->chr_send_event)
191 s->chr_send_event(s, event);
194 void qemu_chr_add_handlers(CharDriverState *s,
195 IOCanReadHandler *fd_can_read,
196 IOReadHandler *fd_read,
197 IOEventHandler *fd_event,
200 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
201 /* chr driver being released. */
202 ++s->avail_connections;
204 s->chr_can_read = fd_can_read;
205 s->chr_read = fd_read;
206 s->chr_event = fd_event;
207 s->handler_opaque = opaque;
208 if (s->chr_update_read_handler)
209 s->chr_update_read_handler(s);
211 /* We're connecting to an already opened device, so let's make sure we
212 also get the open event */
214 qemu_chr_generic_open(s);
218 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
223 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
225 CharDriverState *chr;
227 chr = qemu_mallocz(sizeof(CharDriverState));
228 chr->chr_write = null_chr_write;
232 /* MUX driver for serial I/O splitting */
234 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
235 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
237 IOCanReadHandler *chr_can_read[MAX_MUX];
238 IOReadHandler *chr_read[MAX_MUX];
239 IOEventHandler *chr_event[MAX_MUX];
240 void *ext_opaque[MAX_MUX];
241 CharDriverState *drv;
246 /* Intermediate input buffer allows to catch escape sequences even if the
247 currently active device is not accepting any input - but only until it
249 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
254 int64_t timestamps_start;
258 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
260 MuxDriver *d = chr->opaque;
262 if (!d->timestamps) {
263 ret = d->drv->chr_write(d->drv, buf, len);
268 for (i = 0; i < len; i++) {
274 ti = qemu_get_clock_ms(rt_clock);
275 if (d->timestamps_start == -1)
276 d->timestamps_start = ti;
277 ti -= d->timestamps_start;
279 snprintf(buf1, sizeof(buf1),
280 "[%02d:%02d:%02d.%03d] ",
285 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
288 ret += d->drv->chr_write(d->drv, buf+i, 1);
289 if (buf[i] == '\n') {
297 static const char * const mux_help[] = {
298 "% h print this help\n\r",
299 "% x exit emulator\n\r",
300 "% s save disk data back to file (if -snapshot)\n\r",
301 "% t toggle console timestamps\n\r"
302 "% b send break (magic sysrq)\n\r",
303 "% c switch between console and monitor\n\r",
308 int term_escape_char = 0x01; /* ctrl-a is used for escape */
309 static void mux_print_help(CharDriverState *chr)
312 char ebuf[15] = "Escape-Char";
313 char cbuf[50] = "\n\r";
315 if (term_escape_char > 0 && term_escape_char < 26) {
316 snprintf(cbuf, sizeof(cbuf), "\n\r");
317 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
319 snprintf(cbuf, sizeof(cbuf),
320 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
323 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
324 for (i = 0; mux_help[i] != NULL; i++) {
325 for (j=0; mux_help[i][j] != '\0'; j++) {
326 if (mux_help[i][j] == '%')
327 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
329 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
334 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
336 if (d->chr_event[mux_nr])
337 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
340 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
342 if (d->term_got_escape) {
343 d->term_got_escape = 0;
344 if (ch == term_escape_char)
353 const char *term = "QEMU: Terminated\n\r";
354 chr->chr_write(chr,(uint8_t *)term,strlen(term));
362 qemu_chr_event(chr, CHR_EVENT_BREAK);
365 /* Switch to the next registered device */
366 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
368 if (d->focus >= d->mux_cnt)
370 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
373 d->timestamps = !d->timestamps;
374 d->timestamps_start = -1;
378 } else if (ch == term_escape_char) {
379 d->term_got_escape = 1;
387 static void mux_chr_accept_input(CharDriverState *chr)
389 MuxDriver *d = chr->opaque;
392 while (d->prod[m] != d->cons[m] &&
393 d->chr_can_read[m] &&
394 d->chr_can_read[m](d->ext_opaque[m])) {
395 d->chr_read[m](d->ext_opaque[m],
396 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
400 static int mux_chr_can_read(void *opaque)
402 CharDriverState *chr = opaque;
403 MuxDriver *d = chr->opaque;
406 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
408 if (d->chr_can_read[m])
409 return d->chr_can_read[m](d->ext_opaque[m]);
413 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
415 CharDriverState *chr = opaque;
416 MuxDriver *d = chr->opaque;
420 mux_chr_accept_input (opaque);
422 for(i = 0; i < size; i++)
423 if (mux_proc_byte(chr, d, buf[i])) {
424 if (d->prod[m] == d->cons[m] &&
425 d->chr_can_read[m] &&
426 d->chr_can_read[m](d->ext_opaque[m]))
427 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
429 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
433 static void mux_chr_event(void *opaque, int event)
435 CharDriverState *chr = opaque;
436 MuxDriver *d = chr->opaque;
439 /* Send the event to all registered listeners */
440 for (i = 0; i < d->mux_cnt; i++)
441 mux_chr_send_event(d, i, event);
444 static void mux_chr_update_read_handler(CharDriverState *chr)
446 MuxDriver *d = chr->opaque;
448 if (d->mux_cnt >= MAX_MUX) {
449 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
452 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
453 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
454 d->chr_read[d->mux_cnt] = chr->chr_read;
455 d->chr_event[d->mux_cnt] = chr->chr_event;
456 /* Fix up the real driver with mux routines */
457 if (d->mux_cnt == 0) {
458 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
461 if (d->focus != -1) {
462 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
464 d->focus = d->mux_cnt;
466 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
469 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
471 CharDriverState *chr;
474 chr = qemu_mallocz(sizeof(CharDriverState));
475 d = qemu_mallocz(sizeof(MuxDriver));
480 chr->chr_write = mux_chr_write;
481 chr->chr_update_read_handler = mux_chr_update_read_handler;
482 chr->chr_accept_input = mux_chr_accept_input;
483 /* Frontend guest-open / -close notification is not support with muxes */
484 chr->chr_guest_open = NULL;
485 chr->chr_guest_close = NULL;
487 /* Muxes are always open on creation */
488 qemu_chr_generic_open(chr);
495 int send_all(int fd, const void *buf, int len1)
501 ret = send(fd, buf, len, 0);
503 errno = WSAGetLastError();
504 if (errno != WSAEWOULDBLOCK) {
507 } else if (ret == 0) {
519 int send_all(int fd, const void *_buf, int len1)
522 const uint8_t *buf = _buf;
526 ret = write(fd, buf, len);
528 if (errno != EINTR && errno != EAGAIN)
530 } else if (ret == 0) {
548 #define STDIO_MAX_CLIENTS 1
549 static int stdio_nb_clients = 0;
551 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
553 FDCharDriver *s = chr->opaque;
554 return send_all(s->fd_out, buf, len);
557 static int fd_chr_read_poll(void *opaque)
559 CharDriverState *chr = opaque;
560 FDCharDriver *s = chr->opaque;
562 s->max_size = qemu_chr_can_read(chr);
566 static void fd_chr_read(void *opaque)
568 CharDriverState *chr = opaque;
569 FDCharDriver *s = chr->opaque;
571 uint8_t buf[READ_BUF_LEN];
574 if (len > s->max_size)
578 size = read(s->fd_in, buf, len);
580 /* FD has been closed. Remove it from the active list. */
581 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
582 qemu_chr_event(chr, CHR_EVENT_CLOSED);
586 qemu_chr_read(chr, buf, size);
590 static void fd_chr_update_read_handler(CharDriverState *chr)
592 FDCharDriver *s = chr->opaque;
595 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
597 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
598 fd_chr_read, NULL, chr);
603 static void fd_chr_close(struct CharDriverState *chr)
605 FDCharDriver *s = chr->opaque;
608 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
610 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
615 qemu_chr_event(chr, CHR_EVENT_CLOSED);
618 /* open a character device to a unix fd */
619 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
621 CharDriverState *chr;
624 chr = qemu_mallocz(sizeof(CharDriverState));
625 s = qemu_mallocz(sizeof(FDCharDriver));
629 chr->chr_write = fd_chr_write;
630 chr->chr_update_read_handler = fd_chr_update_read_handler;
631 chr->chr_close = fd_chr_close;
633 qemu_chr_generic_open(chr);
638 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
642 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
643 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 = open(filename, O_RDWR | O_BINARY));
673 return qemu_chr_open_fd(fd_in, fd_out);
677 /* for STDIO, we handle the case where several clients use it
680 #define TERM_FIFO_MAX_SIZE 1
682 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
683 static int term_fifo_size;
685 static int stdio_read_poll(void *opaque)
687 CharDriverState *chr = opaque;
689 /* try to flush the queue if needed */
690 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
691 qemu_chr_read(chr, term_fifo, 1);
694 /* see if we can absorb more chars */
695 if (term_fifo_size == 0)
701 static void stdio_read(void *opaque)
705 CharDriverState *chr = opaque;
707 size = read(0, buf, 1);
709 /* stdin has been closed. Remove it from the active list. */
710 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
711 qemu_chr_event(chr, CHR_EVENT_CLOSED);
715 if (qemu_chr_can_read(chr) > 0) {
716 qemu_chr_read(chr, buf, 1);
717 } else if (term_fifo_size == 0) {
718 term_fifo[term_fifo_size++] = buf[0];
723 /* init terminal so that we can grab keys */
724 static struct termios oldtty;
725 static int old_fd0_flags;
726 static bool stdio_allow_signal;
728 static void term_exit(void)
730 tcsetattr (0, TCSANOW, &oldtty);
731 fcntl(0, F_SETFL, old_fd0_flags);
734 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
740 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
741 |INLCR|IGNCR|ICRNL|IXON);
742 tty.c_oflag |= OPOST;
743 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
744 tty.c_cflag &= ~(CSIZE|PARENB);
749 /* if graphical mode, we allow Ctrl-C handling */
750 if (!stdio_allow_signal)
751 tty.c_lflag &= ~ISIG;
753 tcsetattr (0, TCSANOW, &tty);
756 static void qemu_chr_close_stdio(struct CharDriverState *chr)
760 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
764 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
766 CharDriverState *chr;
768 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
770 if (stdio_nb_clients == 0) {
771 old_fd0_flags = fcntl(0, F_GETFL);
772 tcgetattr (0, &oldtty);
773 fcntl(0, F_SETFL, O_NONBLOCK);
777 chr = qemu_chr_open_fd(0, 1);
778 chr->chr_close = qemu_chr_close_stdio;
779 chr->chr_set_echo = qemu_chr_set_echo_stdio;
780 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
782 stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
783 display_type != DT_NOGRAPHIC);
784 qemu_chr_set_echo(chr, false);
790 /* Once Solaris has openpty(), this is going to be removed. */
791 static int openpty(int *amaster, int *aslave, char *name,
792 struct termios *termp, struct winsize *winp)
795 int mfd = -1, sfd = -1;
797 *amaster = *aslave = -1;
799 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
803 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
806 if ((slave = ptsname(mfd)) == NULL)
809 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
812 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
813 (termp != NULL && tcgetattr(sfd, termp) < 0))
821 ioctl(sfd, TIOCSWINSZ, winp);
832 static void cfmakeraw (struct termios *termios_p)
834 termios_p->c_iflag &=
835 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
836 termios_p->c_oflag &= ~OPOST;
837 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
838 termios_p->c_cflag &= ~(CSIZE|PARENB);
839 termios_p->c_cflag |= CS8;
841 termios_p->c_cc[VMIN] = 0;
842 termios_p->c_cc[VTIME] = 0;
846 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
847 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
848 || defined(__GLIBC__)
858 static void pty_chr_update_read_handler(CharDriverState *chr);
859 static void pty_chr_state(CharDriverState *chr, int connected);
861 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
863 PtyCharDriver *s = chr->opaque;
866 /* guest sends data, check for (re-)connect */
867 pty_chr_update_read_handler(chr);
870 return send_all(s->fd, buf, len);
873 static int pty_chr_read_poll(void *opaque)
875 CharDriverState *chr = opaque;
876 PtyCharDriver *s = chr->opaque;
878 s->read_bytes = qemu_chr_can_read(chr);
879 return s->read_bytes;
882 static void pty_chr_read(void *opaque)
884 CharDriverState *chr = opaque;
885 PtyCharDriver *s = chr->opaque;
887 uint8_t buf[READ_BUF_LEN];
890 if (len > s->read_bytes)
894 size = read(s->fd, buf, len);
895 if ((size == -1 && errno == EIO) ||
897 pty_chr_state(chr, 0);
901 pty_chr_state(chr, 1);
902 qemu_chr_read(chr, buf, size);
906 static void pty_chr_update_read_handler(CharDriverState *chr)
908 PtyCharDriver *s = chr->opaque;
910 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
911 pty_chr_read, NULL, chr);
914 * Short timeout here: just need wait long enougth that qemu makes
915 * it through the poll loop once. When reconnected we want a
916 * short timeout so we notice it almost instantly. Otherwise
917 * read() gives us -EIO instantly, making pty_chr_state() reset the
918 * timeout to the normal (much longer) poll interval before the
921 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
924 static void pty_chr_state(CharDriverState *chr, int connected)
926 PtyCharDriver *s = chr->opaque;
929 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
932 /* (re-)connect poll interval for idle guests: once per second.
933 * We check more frequently in case the guests sends data to
934 * the virtual device linked to our pty. */
935 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
938 qemu_chr_generic_open(chr);
943 static void pty_chr_timer(void *opaque)
945 struct CharDriverState *chr = opaque;
946 PtyCharDriver *s = chr->opaque;
951 /* If we arrive here without polling being cleared due
952 * read returning -EIO, then we are (re-)connected */
953 pty_chr_state(chr, 1);
958 pty_chr_update_read_handler(chr);
961 static void pty_chr_close(struct CharDriverState *chr)
963 PtyCharDriver *s = chr->opaque;
965 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
967 qemu_del_timer(s->timer);
968 qemu_free_timer(s->timer);
970 qemu_chr_event(chr, CHR_EVENT_CLOSED);
973 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
975 CharDriverState *chr;
979 #if defined(__OpenBSD__) || defined(__DragonFly__)
980 char pty_name[PATH_MAX];
981 #define q_ptsname(x) pty_name
983 char *pty_name = NULL;
984 #define q_ptsname(x) ptsname(x)
987 chr = qemu_mallocz(sizeof(CharDriverState));
988 s = qemu_mallocz(sizeof(PtyCharDriver));
990 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
994 /* Set raw attributes on the pty. */
995 tcgetattr(slave_fd, &tty);
997 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1000 len = strlen(q_ptsname(s->fd)) + 5;
1001 chr->filename = qemu_malloc(len);
1002 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
1003 qemu_opt_set(opts, "path", q_ptsname(s->fd));
1004 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
1007 chr->chr_write = pty_chr_write;
1008 chr->chr_update_read_handler = pty_chr_update_read_handler;
1009 chr->chr_close = pty_chr_close;
1011 s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
1016 static void tty_serial_init(int fd, int speed,
1017 int parity, int data_bits, int stop_bits)
1023 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1024 speed, parity, data_bits, stop_bits);
1026 tcgetattr (fd, &tty);
1028 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1029 speed = speed * 10 / 11;
1046 /* Non-Posix values follow. They may be unsupported on some systems. */
1048 check_speed(115200);
1050 check_speed(230400);
1053 check_speed(460800);
1056 check_speed(500000);
1059 check_speed(576000);
1062 check_speed(921600);
1065 check_speed(1000000);
1068 check_speed(1152000);
1071 check_speed(1500000);
1074 check_speed(2000000);
1077 check_speed(2500000);
1080 check_speed(3000000);
1083 check_speed(3500000);
1086 check_speed(4000000);
1091 cfsetispeed(&tty, spd);
1092 cfsetospeed(&tty, spd);
1094 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1095 |INLCR|IGNCR|ICRNL|IXON);
1096 tty.c_oflag |= OPOST;
1097 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1098 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1119 tty.c_cflag |= PARENB;
1122 tty.c_cflag |= PARENB | PARODD;
1126 tty.c_cflag |= CSTOPB;
1128 tcsetattr (fd, TCSANOW, &tty);
1131 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1133 FDCharDriver *s = chr->opaque;
1136 case CHR_IOCTL_SERIAL_SET_PARAMS:
1138 QEMUSerialSetParams *ssp = arg;
1139 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1140 ssp->data_bits, ssp->stop_bits);
1143 case CHR_IOCTL_SERIAL_SET_BREAK:
1145 int enable = *(int *)arg;
1147 tcsendbreak(s->fd_in, 1);
1150 case CHR_IOCTL_SERIAL_GET_TIOCM:
1153 int *targ = (int *)arg;
1154 ioctl(s->fd_in, TIOCMGET, &sarg);
1156 if (sarg & TIOCM_CTS)
1157 *targ |= CHR_TIOCM_CTS;
1158 if (sarg & TIOCM_CAR)
1159 *targ |= CHR_TIOCM_CAR;
1160 if (sarg & TIOCM_DSR)
1161 *targ |= CHR_TIOCM_DSR;
1162 if (sarg & TIOCM_RI)
1163 *targ |= CHR_TIOCM_RI;
1164 if (sarg & TIOCM_DTR)
1165 *targ |= CHR_TIOCM_DTR;
1166 if (sarg & TIOCM_RTS)
1167 *targ |= CHR_TIOCM_RTS;
1170 case CHR_IOCTL_SERIAL_SET_TIOCM:
1172 int sarg = *(int *)arg;
1174 ioctl(s->fd_in, TIOCMGET, &targ);
1175 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1176 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1177 if (sarg & CHR_TIOCM_CTS)
1179 if (sarg & CHR_TIOCM_CAR)
1181 if (sarg & CHR_TIOCM_DSR)
1183 if (sarg & CHR_TIOCM_RI)
1185 if (sarg & CHR_TIOCM_DTR)
1187 if (sarg & CHR_TIOCM_RTS)
1189 ioctl(s->fd_in, TIOCMSET, &targ);
1198 static void qemu_chr_close_tty(CharDriverState *chr)
1200 FDCharDriver *s = chr->opaque;
1214 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1216 const char *filename = qemu_opt_get(opts, "path");
1217 CharDriverState *chr;
1220 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1224 tty_serial_init(fd, 115200, 'N', 8, 1);
1225 chr = qemu_chr_open_fd(fd, fd);
1230 chr->chr_ioctl = tty_serial_ioctl;
1231 chr->chr_close = qemu_chr_close_tty;
1234 #else /* ! __linux__ && ! __sun__ */
1235 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1239 #endif /* __linux__ || __sun__ */
1241 #if defined(__linux__)
1245 } ParallelCharDriver;
1247 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1249 if (s->mode != mode) {
1251 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1258 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1260 ParallelCharDriver *drv = chr->opaque;
1265 case CHR_IOCTL_PP_READ_DATA:
1266 if (ioctl(fd, PPRDATA, &b) < 0)
1268 *(uint8_t *)arg = b;
1270 case CHR_IOCTL_PP_WRITE_DATA:
1271 b = *(uint8_t *)arg;
1272 if (ioctl(fd, PPWDATA, &b) < 0)
1275 case CHR_IOCTL_PP_READ_CONTROL:
1276 if (ioctl(fd, PPRCONTROL, &b) < 0)
1278 /* Linux gives only the lowest bits, and no way to know data
1279 direction! For better compatibility set the fixed upper
1281 *(uint8_t *)arg = b | 0xc0;
1283 case CHR_IOCTL_PP_WRITE_CONTROL:
1284 b = *(uint8_t *)arg;
1285 if (ioctl(fd, PPWCONTROL, &b) < 0)
1288 case CHR_IOCTL_PP_READ_STATUS:
1289 if (ioctl(fd, PPRSTATUS, &b) < 0)
1291 *(uint8_t *)arg = b;
1293 case CHR_IOCTL_PP_DATA_DIR:
1294 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1297 case CHR_IOCTL_PP_EPP_READ_ADDR:
1298 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1299 struct ParallelIOArg *parg = arg;
1300 int n = read(fd, parg->buffer, parg->count);
1301 if (n != parg->count) {
1306 case CHR_IOCTL_PP_EPP_READ:
1307 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1308 struct ParallelIOArg *parg = arg;
1309 int n = read(fd, parg->buffer, parg->count);
1310 if (n != parg->count) {
1315 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1316 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1317 struct ParallelIOArg *parg = arg;
1318 int n = write(fd, parg->buffer, parg->count);
1319 if (n != parg->count) {
1324 case CHR_IOCTL_PP_EPP_WRITE:
1325 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1326 struct ParallelIOArg *parg = arg;
1327 int n = write(fd, parg->buffer, parg->count);
1328 if (n != parg->count) {
1339 static void pp_close(CharDriverState *chr)
1341 ParallelCharDriver *drv = chr->opaque;
1344 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1345 ioctl(fd, PPRELEASE);
1348 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1351 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1353 const char *filename = qemu_opt_get(opts, "path");
1354 CharDriverState *chr;
1355 ParallelCharDriver *drv;
1358 TFR(fd = open(filename, O_RDWR));
1362 if (ioctl(fd, PPCLAIM) < 0) {
1367 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1369 drv->mode = IEEE1284_MODE_COMPAT;
1371 chr = qemu_mallocz(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 = open(filename, O_RDWR);
1431 chr = qemu_mallocz(sizeof(CharDriverState));
1432 chr->opaque = (void *)(intptr_t)fd;
1433 chr->chr_write = null_chr_write;
1434 chr->chr_ioctl = pp_ioctl;
1443 HANDLE hcom, hrecv, hsend;
1444 OVERLAPPED orecv, osend;
1449 #define NSENDBUF 2048
1450 #define NRECVBUF 2048
1451 #define MAXCONNECT 1
1452 #define NTIMEOUT 5000
1454 static int win_chr_poll(void *opaque);
1455 static int win_chr_pipe_poll(void *opaque);
1457 static void win_chr_close(CharDriverState *chr)
1459 WinCharState *s = chr->opaque;
1462 CloseHandle(s->hsend);
1466 CloseHandle(s->hrecv);
1470 CloseHandle(s->hcom);
1474 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1476 qemu_del_polling_cb(win_chr_poll, chr);
1478 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1481 static int win_chr_init(CharDriverState *chr, const char *filename)
1483 WinCharState *s = chr->opaque;
1485 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1490 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1492 fprintf(stderr, "Failed CreateEvent\n");
1495 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1497 fprintf(stderr, "Failed CreateEvent\n");
1501 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1502 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1503 if (s->hcom == INVALID_HANDLE_VALUE) {
1504 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1509 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1510 fprintf(stderr, "Failed SetupComm\n");
1514 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1515 size = sizeof(COMMCONFIG);
1516 GetDefaultCommConfig(filename, &comcfg, &size);
1517 comcfg.dcb.DCBlength = sizeof(DCB);
1518 CommConfigDialog(filename, NULL, &comcfg);
1520 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1521 fprintf(stderr, "Failed SetCommState\n");
1525 if (!SetCommMask(s->hcom, EV_ERR)) {
1526 fprintf(stderr, "Failed SetCommMask\n");
1530 cto.ReadIntervalTimeout = MAXDWORD;
1531 if (!SetCommTimeouts(s->hcom, &cto)) {
1532 fprintf(stderr, "Failed SetCommTimeouts\n");
1536 if (!ClearCommError(s->hcom, &err, &comstat)) {
1537 fprintf(stderr, "Failed ClearCommError\n");
1540 qemu_add_polling_cb(win_chr_poll, chr);
1548 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1550 WinCharState *s = chr->opaque;
1551 DWORD len, ret, size, err;
1554 ZeroMemory(&s->osend, sizeof(s->osend));
1555 s->osend.hEvent = s->hsend;
1558 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1560 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1562 err = GetLastError();
1563 if (err == ERROR_IO_PENDING) {
1564 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1582 static int win_chr_read_poll(CharDriverState *chr)
1584 WinCharState *s = chr->opaque;
1586 s->max_size = qemu_chr_can_read(chr);
1590 static void win_chr_readfile(CharDriverState *chr)
1592 WinCharState *s = chr->opaque;
1594 uint8_t buf[READ_BUF_LEN];
1597 ZeroMemory(&s->orecv, sizeof(s->orecv));
1598 s->orecv.hEvent = s->hrecv;
1599 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1601 err = GetLastError();
1602 if (err == ERROR_IO_PENDING) {
1603 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1608 qemu_chr_read(chr, buf, size);
1612 static void win_chr_read(CharDriverState *chr)
1614 WinCharState *s = chr->opaque;
1616 if (s->len > s->max_size)
1617 s->len = s->max_size;
1621 win_chr_readfile(chr);
1624 static int win_chr_poll(void *opaque)
1626 CharDriverState *chr = opaque;
1627 WinCharState *s = chr->opaque;
1631 ClearCommError(s->hcom, &comerr, &status);
1632 if (status.cbInQue > 0) {
1633 s->len = status.cbInQue;
1634 win_chr_read_poll(chr);
1641 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1643 const char *filename = qemu_opt_get(opts, "path");
1644 CharDriverState *chr;
1647 chr = qemu_mallocz(sizeof(CharDriverState));
1648 s = qemu_mallocz(sizeof(WinCharState));
1650 chr->chr_write = win_chr_write;
1651 chr->chr_close = win_chr_close;
1653 if (win_chr_init(chr, filename) < 0) {
1658 qemu_chr_generic_open(chr);
1662 static int win_chr_pipe_poll(void *opaque)
1664 CharDriverState *chr = opaque;
1665 WinCharState *s = chr->opaque;
1668 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1671 win_chr_read_poll(chr);
1678 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1680 WinCharState *s = chr->opaque;
1688 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1690 fprintf(stderr, "Failed CreateEvent\n");
1693 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1695 fprintf(stderr, "Failed CreateEvent\n");
1699 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1700 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1701 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1703 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1704 if (s->hcom == INVALID_HANDLE_VALUE) {
1705 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1710 ZeroMemory(&ov, sizeof(ov));
1711 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1712 ret = ConnectNamedPipe(s->hcom, &ov);
1714 fprintf(stderr, "Failed ConnectNamedPipe\n");
1718 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1720 fprintf(stderr, "Failed GetOverlappedResult\n");
1722 CloseHandle(ov.hEvent);
1729 CloseHandle(ov.hEvent);
1732 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1741 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1743 const char *filename = qemu_opt_get(opts, "path");
1744 CharDriverState *chr;
1747 chr = qemu_mallocz(sizeof(CharDriverState));
1748 s = qemu_mallocz(sizeof(WinCharState));
1750 chr->chr_write = win_chr_write;
1751 chr->chr_close = win_chr_close;
1753 if (win_chr_pipe_init(chr, filename) < 0) {
1758 qemu_chr_generic_open(chr);
1762 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1764 CharDriverState *chr;
1767 chr = qemu_mallocz(sizeof(CharDriverState));
1768 s = qemu_mallocz(sizeof(WinCharState));
1771 chr->chr_write = win_chr_write;
1772 qemu_chr_generic_open(chr);
1776 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1778 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1781 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1783 const char *file_out = qemu_opt_get(opts, "path");
1786 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1787 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1788 if (fd_out == INVALID_HANDLE_VALUE)
1791 return qemu_chr_open_win_file(fd_out);
1793 #endif /* !_WIN32 */
1795 /***********************************************************/
1796 /* UDP Net console */
1800 uint8_t buf[READ_BUF_LEN];
1806 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1808 NetCharDriver *s = chr->opaque;
1810 return send(s->fd, (const void *)buf, len, 0);
1813 static int udp_chr_read_poll(void *opaque)
1815 CharDriverState *chr = opaque;
1816 NetCharDriver *s = chr->opaque;
1818 s->max_size = qemu_chr_can_read(chr);
1820 /* If there were any stray characters in the queue process them
1823 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1824 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1826 s->max_size = qemu_chr_can_read(chr);
1831 static void udp_chr_read(void *opaque)
1833 CharDriverState *chr = opaque;
1834 NetCharDriver *s = chr->opaque;
1836 if (s->max_size == 0)
1838 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1839 s->bufptr = s->bufcnt;
1844 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1845 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1847 s->max_size = qemu_chr_can_read(chr);
1851 static void udp_chr_update_read_handler(CharDriverState *chr)
1853 NetCharDriver *s = chr->opaque;
1856 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1857 udp_chr_read, NULL, chr);
1861 static void udp_chr_close(CharDriverState *chr)
1863 NetCharDriver *s = chr->opaque;
1865 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1869 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1872 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1874 CharDriverState *chr = NULL;
1875 NetCharDriver *s = NULL;
1878 chr = qemu_mallocz(sizeof(CharDriverState));
1879 s = qemu_mallocz(sizeof(NetCharDriver));
1881 fd = inet_dgram_opts(opts);
1883 fprintf(stderr, "inet_dgram_opts failed\n");
1891 chr->chr_write = udp_chr_write;
1892 chr->chr_update_read_handler = udp_chr_update_read_handler;
1893 chr->chr_close = udp_chr_close;
1906 /***********************************************************/
1907 /* TCP Net console */
1919 static void tcp_chr_accept(void *opaque);
1921 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1923 TCPCharDriver *s = chr->opaque;
1925 return send_all(s->fd, buf, len);
1927 /* XXX: indicate an error ? */
1932 static int tcp_chr_read_poll(void *opaque)
1934 CharDriverState *chr = opaque;
1935 TCPCharDriver *s = chr->opaque;
1938 s->max_size = qemu_chr_can_read(chr);
1943 #define IAC_BREAK 243
1944 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1946 uint8_t *buf, int *size)
1948 /* Handle any telnet client's basic IAC options to satisfy char by
1949 * char mode with no echo. All IAC options will be removed from
1950 * the buf and the do_telnetopt variable will be used to track the
1951 * state of the width of the IAC information.
1953 * IAC commands come in sets of 3 bytes with the exception of the
1954 * "IAC BREAK" command and the double IAC.
1960 for (i = 0; i < *size; i++) {
1961 if (s->do_telnetopt > 1) {
1962 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1963 /* Double IAC means send an IAC */
1967 s->do_telnetopt = 1;
1969 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1970 /* Handle IAC break commands by sending a serial break */
1971 qemu_chr_event(chr, CHR_EVENT_BREAK);
1976 if (s->do_telnetopt >= 4) {
1977 s->do_telnetopt = 1;
1980 if ((unsigned char)buf[i] == IAC) {
1981 s->do_telnetopt = 2;
1992 static int tcp_get_msgfd(CharDriverState *chr)
1994 TCPCharDriver *s = chr->opaque;
2001 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2003 TCPCharDriver *s = chr->opaque;
2004 struct cmsghdr *cmsg;
2006 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2009 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2010 cmsg->cmsg_level != SOL_SOCKET ||
2011 cmsg->cmsg_type != SCM_RIGHTS)
2014 fd = *((int *)CMSG_DATA(cmsg));
2024 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2026 TCPCharDriver *s = chr->opaque;
2027 struct msghdr msg = { NULL, };
2028 struct iovec iov[1];
2030 struct cmsghdr cmsg;
2031 char control[CMSG_SPACE(sizeof(int))];
2035 iov[0].iov_base = buf;
2036 iov[0].iov_len = len;
2040 msg.msg_control = &msg_control;
2041 msg.msg_controllen = sizeof(msg_control);
2043 ret = recvmsg(s->fd, &msg, 0);
2044 if (ret > 0 && s->is_unix)
2045 unix_process_msgfd(chr, &msg);
2050 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2052 TCPCharDriver *s = chr->opaque;
2053 return recv(s->fd, buf, len, 0);
2057 static void tcp_chr_read(void *opaque)
2059 CharDriverState *chr = opaque;
2060 TCPCharDriver *s = chr->opaque;
2061 uint8_t buf[READ_BUF_LEN];
2064 if (!s->connected || s->max_size <= 0)
2067 if (len > s->max_size)
2069 size = tcp_chr_recv(chr, (void *)buf, len);
2071 /* connection closed */
2073 if (s->listen_fd >= 0) {
2074 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2076 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2079 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2080 } else if (size > 0) {
2081 if (s->do_telnetopt)
2082 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2084 qemu_chr_read(chr, buf, size);
2089 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2091 return qemu_chr_open_fd(eventfd, eventfd);
2095 static void tcp_chr_connect(void *opaque)
2097 CharDriverState *chr = opaque;
2098 TCPCharDriver *s = chr->opaque;
2101 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2102 tcp_chr_read, NULL, chr);
2103 qemu_chr_generic_open(chr);
2106 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2107 static void tcp_chr_telnet_init(int fd)
2110 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2111 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2112 send(fd, (char *)buf, 3, 0);
2113 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2114 send(fd, (char *)buf, 3, 0);
2115 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2116 send(fd, (char *)buf, 3, 0);
2117 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2118 send(fd, (char *)buf, 3, 0);
2121 static void socket_set_nodelay(int fd)
2124 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2127 static void tcp_chr_accept(void *opaque)
2129 CharDriverState *chr = opaque;
2130 TCPCharDriver *s = chr->opaque;
2131 struct sockaddr_in saddr;
2133 struct sockaddr_un uaddr;
2135 struct sockaddr *addr;
2142 len = sizeof(uaddr);
2143 addr = (struct sockaddr *)&uaddr;
2147 len = sizeof(saddr);
2148 addr = (struct sockaddr *)&saddr;
2150 fd = qemu_accept(s->listen_fd, addr, &len);
2151 if (fd < 0 && errno != EINTR) {
2153 } else if (fd >= 0) {
2154 if (s->do_telnetopt)
2155 tcp_chr_telnet_init(fd);
2159 socket_set_nonblock(fd);
2161 socket_set_nodelay(fd);
2163 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2164 tcp_chr_connect(chr);
2167 static void tcp_chr_close(CharDriverState *chr)
2169 TCPCharDriver *s = chr->opaque;
2171 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2174 if (s->listen_fd >= 0) {
2175 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2176 closesocket(s->listen_fd);
2179 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2182 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2184 CharDriverState *chr = NULL;
2185 TCPCharDriver *s = NULL;
2193 is_listen = qemu_opt_get_bool(opts, "server", 0);
2194 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2195 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2196 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2197 is_unix = qemu_opt_get(opts, "path") != NULL;
2201 chr = qemu_mallocz(sizeof(CharDriverState));
2202 s = qemu_mallocz(sizeof(TCPCharDriver));
2206 fd = unix_listen_opts(opts);
2208 fd = unix_connect_opts(opts);
2212 fd = inet_listen_opts(opts, 0);
2214 fd = inet_connect_opts(opts);
2220 if (!is_waitconnect)
2221 socket_set_nonblock(fd);
2227 s->is_unix = is_unix;
2228 s->do_nodelay = do_nodelay && !is_unix;
2231 chr->chr_write = tcp_chr_write;
2232 chr->chr_close = tcp_chr_close;
2233 chr->get_msgfd = tcp_get_msgfd;
2237 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2239 s->do_telnetopt = 1;
2244 socket_set_nodelay(fd);
2245 tcp_chr_connect(chr);
2248 /* for "info chardev" monitor command */
2249 chr->filename = qemu_malloc(256);
2251 snprintf(chr->filename, 256, "unix:%s%s",
2252 qemu_opt_get(opts, "path"),
2253 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2254 } else if (is_telnet) {
2255 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2256 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2257 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2259 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2260 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2261 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2264 if (is_listen && is_waitconnect) {
2265 printf("QEMU waiting for connection on: %s\n",
2267 tcp_chr_accept(chr);
2268 socket_set_nonblock(s->listen_fd);
2280 /***********************************************************/
2281 /* Memory chardev */
2284 size_t outbuf_capacity;
2288 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2290 MemoryDriver *d = chr->opaque;
2292 /* TODO: the QString implementation has the same code, we should
2293 * introduce a generic way to do this in cutils.c */
2294 if (d->outbuf_capacity < d->outbuf_size + len) {
2296 d->outbuf_capacity += len;
2297 d->outbuf_capacity *= 2;
2298 d->outbuf = qemu_realloc(d->outbuf, d->outbuf_capacity);
2301 memcpy(d->outbuf + d->outbuf_size, buf, len);
2302 d->outbuf_size += len;
2307 void qemu_chr_init_mem(CharDriverState *chr)
2311 d = qemu_malloc(sizeof(*d));
2313 d->outbuf_capacity = 4096;
2314 d->outbuf = qemu_mallocz(d->outbuf_capacity);
2316 memset(chr, 0, sizeof(*chr));
2318 chr->chr_write = mem_chr_write;
2321 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2323 MemoryDriver *d = chr->opaque;
2324 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2327 /* NOTE: this driver can not be closed with qemu_chr_close()! */
2328 void qemu_chr_close_mem(CharDriverState *chr)
2330 MemoryDriver *d = chr->opaque;
2332 qemu_free(d->outbuf);
2333 qemu_free(chr->opaque);
2335 chr->chr_write = NULL;
2338 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2340 const MemoryDriver *d = chr->opaque;
2341 return d->outbuf_size;
2344 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2346 char host[65], port[33], width[8], height[8];
2351 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2355 if (strstart(filename, "mon:", &p)) {
2357 qemu_opt_set(opts, "mux", "on");
2360 if (strcmp(filename, "null") == 0 ||
2361 strcmp(filename, "pty") == 0 ||
2362 strcmp(filename, "msmouse") == 0 ||
2363 strcmp(filename, "braille") == 0 ||
2364 strcmp(filename, "stdio") == 0) {
2365 qemu_opt_set(opts, "backend", filename);
2368 if (strstart(filename, "vc", &p)) {
2369 qemu_opt_set(opts, "backend", "vc");
2371 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2373 qemu_opt_set(opts, "width", width);
2374 qemu_opt_set(opts, "height", height);
2375 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2377 qemu_opt_set(opts, "cols", width);
2378 qemu_opt_set(opts, "rows", height);
2385 if (strcmp(filename, "con:") == 0) {
2386 qemu_opt_set(opts, "backend", "console");
2389 if (strstart(filename, "COM", NULL)) {
2390 qemu_opt_set(opts, "backend", "serial");
2391 qemu_opt_set(opts, "path", filename);
2394 if (strstart(filename, "file:", &p)) {
2395 qemu_opt_set(opts, "backend", "file");
2396 qemu_opt_set(opts, "path", p);
2399 if (strstart(filename, "pipe:", &p)) {
2400 qemu_opt_set(opts, "backend", "pipe");
2401 qemu_opt_set(opts, "path", p);
2404 if (strstart(filename, "tcp:", &p) ||
2405 strstart(filename, "telnet:", &p)) {
2406 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2408 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2411 qemu_opt_set(opts, "backend", "socket");
2412 qemu_opt_set(opts, "host", host);
2413 qemu_opt_set(opts, "port", port);
2414 if (p[pos] == ',') {
2415 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2418 if (strstart(filename, "telnet:", &p))
2419 qemu_opt_set(opts, "telnet", "on");
2422 if (strstart(filename, "udp:", &p)) {
2423 qemu_opt_set(opts, "backend", "udp");
2424 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2426 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2430 qemu_opt_set(opts, "host", host);
2431 qemu_opt_set(opts, "port", port);
2432 if (p[pos] == '@') {
2434 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2436 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2440 qemu_opt_set(opts, "localaddr", host);
2441 qemu_opt_set(opts, "localport", port);
2445 if (strstart(filename, "unix:", &p)) {
2446 qemu_opt_set(opts, "backend", "socket");
2447 if (qemu_opts_do_parse(opts, p, "path") != 0)
2451 if (strstart(filename, "/dev/parport", NULL) ||
2452 strstart(filename, "/dev/ppi", NULL)) {
2453 qemu_opt_set(opts, "backend", "parport");
2454 qemu_opt_set(opts, "path", filename);
2457 if (strstart(filename, "/dev/", NULL)) {
2458 qemu_opt_set(opts, "backend", "tty");
2459 qemu_opt_set(opts, "path", filename);
2464 qemu_opts_del(opts);
2468 static const struct {
2470 CharDriverState *(*open)(QemuOpts *opts);
2471 } backend_table[] = {
2472 { .name = "null", .open = qemu_chr_open_null },
2473 { .name = "socket", .open = qemu_chr_open_socket },
2474 { .name = "udp", .open = qemu_chr_open_udp },
2475 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2476 { .name = "vc", .open = text_console_init },
2478 { .name = "file", .open = qemu_chr_open_win_file_out },
2479 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2480 { .name = "console", .open = qemu_chr_open_win_con },
2481 { .name = "serial", .open = qemu_chr_open_win },
2483 { .name = "file", .open = qemu_chr_open_file_out },
2484 { .name = "pipe", .open = qemu_chr_open_pipe },
2485 { .name = "pty", .open = qemu_chr_open_pty },
2486 { .name = "stdio", .open = qemu_chr_open_stdio },
2488 #ifdef CONFIG_BRLAPI
2489 { .name = "braille", .open = chr_baum_init },
2491 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2492 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2493 || defined(__FreeBSD_kernel__)
2494 { .name = "tty", .open = qemu_chr_open_tty },
2496 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2497 || defined(__FreeBSD_kernel__)
2498 { .name = "parport", .open = qemu_chr_open_pp },
2501 { .name = "spicevmc", .open = qemu_chr_open_spice },
2505 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2506 void (*init)(struct CharDriverState *s))
2508 CharDriverState *chr;
2511 if (qemu_opts_id(opts) == NULL) {
2512 fprintf(stderr, "chardev: no id specified\n");
2516 if (qemu_opt_get(opts, "backend") == NULL) {
2517 fprintf(stderr, "chardev: \"%s\" missing backend\n",
2518 qemu_opts_id(opts));
2521 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2522 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2525 if (i == ARRAY_SIZE(backend_table)) {
2526 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2527 qemu_opt_get(opts, "backend"));
2531 chr = backend_table[i].open(opts);
2533 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2534 qemu_opt_get(opts, "backend"));
2539 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2541 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2543 if (qemu_opt_get_bool(opts, "mux", 0)) {
2544 CharDriverState *base = chr;
2545 int len = strlen(qemu_opts_id(opts)) + 6;
2546 base->label = qemu_malloc(len);
2547 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2548 chr = qemu_chr_open_mux(base);
2549 chr->filename = base->filename;
2550 chr->avail_connections = MAX_MUX;
2551 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2553 chr->avail_connections = 1;
2555 chr->label = qemu_strdup(qemu_opts_id(opts));
2559 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2562 CharDriverState *chr;
2565 if (strstart(filename, "chardev:", &p)) {
2566 return qemu_chr_find(p);
2569 opts = qemu_chr_parse_compat(label, filename);
2573 chr = qemu_chr_open_opts(opts, init);
2574 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2575 monitor_init(chr, MONITOR_USE_READLINE);
2577 qemu_opts_del(opts);
2581 void qemu_chr_set_echo(struct CharDriverState *chr, bool echo)
2583 if (chr->chr_set_echo) {
2584 chr->chr_set_echo(chr, echo);
2588 void qemu_chr_guest_open(struct CharDriverState *chr)
2590 if (chr->chr_guest_open) {
2591 chr->chr_guest_open(chr);
2595 void qemu_chr_guest_close(struct CharDriverState *chr)
2597 if (chr->chr_guest_close) {
2598 chr->chr_guest_close(chr);
2602 void qemu_chr_close(CharDriverState *chr)
2604 QTAILQ_REMOVE(&chardevs, chr, next);
2606 chr->chr_close(chr);
2607 qemu_free(chr->filename);
2608 qemu_free(chr->label);
2612 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2615 Monitor *mon = opaque;
2617 chr_dict = qobject_to_qdict(obj);
2618 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2619 qdict_get_str(chr_dict, "filename"));
2622 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2624 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2627 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2630 CharDriverState *chr;
2632 chr_list = qlist_new();
2634 QTAILQ_FOREACH(chr, &chardevs, next) {
2635 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2636 chr->label, chr->filename);
2637 qlist_append_obj(chr_list, obj);
2640 *ret_data = QOBJECT(chr_list);
2643 CharDriverState *qemu_chr_find(const char *name)
2645 CharDriverState *chr;
2647 QTAILQ_FOREACH(chr, &chardevs, next) {
2648 if (strcmp(chr->label, name) != 0)