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 s->chr_can_read = fd_can_read;
201 s->chr_read = fd_read;
202 s->chr_event = fd_event;
203 s->handler_opaque = opaque;
204 if (s->chr_update_read_handler)
205 s->chr_update_read_handler(s);
207 /* We're connecting to an already opened device, so let's make sure we
208 also get the open event */
210 qemu_chr_generic_open(s);
214 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
219 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
221 CharDriverState *chr;
223 chr = qemu_mallocz(sizeof(CharDriverState));
224 chr->chr_write = null_chr_write;
228 /* MUX driver for serial I/O splitting */
230 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
231 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
233 IOCanReadHandler *chr_can_read[MAX_MUX];
234 IOReadHandler *chr_read[MAX_MUX];
235 IOEventHandler *chr_event[MAX_MUX];
236 void *ext_opaque[MAX_MUX];
237 CharDriverState *drv;
242 /* Intermediate input buffer allows to catch escape sequences even if the
243 currently active device is not accepting any input - but only until it
245 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
250 int64_t timestamps_start;
254 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
256 MuxDriver *d = chr->opaque;
258 if (!d->timestamps) {
259 ret = d->drv->chr_write(d->drv, buf, len);
264 for (i = 0; i < len; i++) {
270 ti = qemu_get_clock(rt_clock);
271 if (d->timestamps_start == -1)
272 d->timestamps_start = ti;
273 ti -= d->timestamps_start;
275 snprintf(buf1, sizeof(buf1),
276 "[%02d:%02d:%02d.%03d] ",
281 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
284 ret += d->drv->chr_write(d->drv, buf+i, 1);
285 if (buf[i] == '\n') {
293 static const char * const mux_help[] = {
294 "% h print this help\n\r",
295 "% x exit emulator\n\r",
296 "% s save disk data back to file (if -snapshot)\n\r",
297 "% t toggle console timestamps\n\r"
298 "% b send break (magic sysrq)\n\r",
299 "% c switch between console and monitor\n\r",
304 int term_escape_char = 0x01; /* ctrl-a is used for escape */
305 static void mux_print_help(CharDriverState *chr)
308 char ebuf[15] = "Escape-Char";
309 char cbuf[50] = "\n\r";
311 if (term_escape_char > 0 && term_escape_char < 26) {
312 snprintf(cbuf, sizeof(cbuf), "\n\r");
313 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
315 snprintf(cbuf, sizeof(cbuf),
316 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
319 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
320 for (i = 0; mux_help[i] != NULL; i++) {
321 for (j=0; mux_help[i][j] != '\0'; j++) {
322 if (mux_help[i][j] == '%')
323 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
325 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
330 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
332 if (d->chr_event[mux_nr])
333 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
336 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
338 if (d->term_got_escape) {
339 d->term_got_escape = 0;
340 if (ch == term_escape_char)
349 const char *term = "QEMU: Terminated\n\r";
350 chr->chr_write(chr,(uint8_t *)term,strlen(term));
358 qemu_chr_event(chr, CHR_EVENT_BREAK);
361 /* Switch to the next registered device */
362 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
364 if (d->focus >= d->mux_cnt)
366 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
369 d->timestamps = !d->timestamps;
370 d->timestamps_start = -1;
374 } else if (ch == term_escape_char) {
375 d->term_got_escape = 1;
383 static void mux_chr_accept_input(CharDriverState *chr)
385 MuxDriver *d = chr->opaque;
388 while (d->prod[m] != d->cons[m] &&
389 d->chr_can_read[m] &&
390 d->chr_can_read[m](d->ext_opaque[m])) {
391 d->chr_read[m](d->ext_opaque[m],
392 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
396 static int mux_chr_can_read(void *opaque)
398 CharDriverState *chr = opaque;
399 MuxDriver *d = chr->opaque;
402 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
404 if (d->chr_can_read[m])
405 return d->chr_can_read[m](d->ext_opaque[m]);
409 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
411 CharDriverState *chr = opaque;
412 MuxDriver *d = chr->opaque;
416 mux_chr_accept_input (opaque);
418 for(i = 0; i < size; i++)
419 if (mux_proc_byte(chr, d, buf[i])) {
420 if (d->prod[m] == d->cons[m] &&
421 d->chr_can_read[m] &&
422 d->chr_can_read[m](d->ext_opaque[m]))
423 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
425 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
429 static void mux_chr_event(void *opaque, int event)
431 CharDriverState *chr = opaque;
432 MuxDriver *d = chr->opaque;
435 /* Send the event to all registered listeners */
436 for (i = 0; i < d->mux_cnt; i++)
437 mux_chr_send_event(d, i, event);
440 static void mux_chr_update_read_handler(CharDriverState *chr)
442 MuxDriver *d = chr->opaque;
444 if (d->mux_cnt >= MAX_MUX) {
445 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
448 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
449 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
450 d->chr_read[d->mux_cnt] = chr->chr_read;
451 d->chr_event[d->mux_cnt] = chr->chr_event;
452 /* Fix up the real driver with mux routines */
453 if (d->mux_cnt == 0) {
454 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
457 if (d->focus != -1) {
458 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
460 d->focus = d->mux_cnt;
462 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
465 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
467 CharDriverState *chr;
470 chr = qemu_mallocz(sizeof(CharDriverState));
471 d = qemu_mallocz(sizeof(MuxDriver));
476 chr->chr_write = mux_chr_write;
477 chr->chr_update_read_handler = mux_chr_update_read_handler;
478 chr->chr_accept_input = mux_chr_accept_input;
480 /* Muxes are always open on creation */
481 qemu_chr_generic_open(chr);
488 int send_all(int fd, const void *buf, int len1)
494 ret = send(fd, buf, len, 0);
496 errno = WSAGetLastError();
497 if (errno != WSAEWOULDBLOCK) {
500 } else if (ret == 0) {
512 int send_all(int fd, const void *_buf, int len1)
515 const uint8_t *buf = _buf;
519 ret = write(fd, buf, len);
521 if (errno != EINTR && errno != EAGAIN)
523 } else if (ret == 0) {
541 #define STDIO_MAX_CLIENTS 1
542 static int stdio_nb_clients = 0;
544 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
546 FDCharDriver *s = chr->opaque;
547 return send_all(s->fd_out, buf, len);
550 static int fd_chr_read_poll(void *opaque)
552 CharDriverState *chr = opaque;
553 FDCharDriver *s = chr->opaque;
555 s->max_size = qemu_chr_can_read(chr);
559 static void fd_chr_read(void *opaque)
561 CharDriverState *chr = opaque;
562 FDCharDriver *s = chr->opaque;
564 uint8_t buf[READ_BUF_LEN];
567 if (len > s->max_size)
571 size = read(s->fd_in, buf, len);
573 /* FD has been closed. Remove it from the active list. */
574 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
575 qemu_chr_event(chr, CHR_EVENT_CLOSED);
579 qemu_chr_read(chr, buf, size);
583 static void fd_chr_update_read_handler(CharDriverState *chr)
585 FDCharDriver *s = chr->opaque;
588 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
590 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
591 fd_chr_read, NULL, chr);
596 static void fd_chr_close(struct CharDriverState *chr)
598 FDCharDriver *s = chr->opaque;
601 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
603 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
608 qemu_chr_event(chr, CHR_EVENT_CLOSED);
611 /* open a character device to a unix fd */
612 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
614 CharDriverState *chr;
617 chr = qemu_mallocz(sizeof(CharDriverState));
618 s = qemu_mallocz(sizeof(FDCharDriver));
622 chr->chr_write = fd_chr_write;
623 chr->chr_update_read_handler = fd_chr_update_read_handler;
624 chr->chr_close = fd_chr_close;
626 qemu_chr_generic_open(chr);
631 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
635 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
636 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
639 return qemu_chr_open_fd(-1, fd_out);
642 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
645 char filename_in[256], filename_out[256];
646 const char *filename = qemu_opt_get(opts, "path");
648 if (filename == NULL) {
649 fprintf(stderr, "chardev: pipe: no filename given\n");
653 snprintf(filename_in, 256, "%s.in", filename);
654 snprintf(filename_out, 256, "%s.out", filename);
655 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
656 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
657 if (fd_in < 0 || fd_out < 0) {
662 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
666 return qemu_chr_open_fd(fd_in, fd_out);
670 /* for STDIO, we handle the case where several clients use it
673 #define TERM_FIFO_MAX_SIZE 1
675 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
676 static int term_fifo_size;
678 static int stdio_read_poll(void *opaque)
680 CharDriverState *chr = opaque;
682 /* try to flush the queue if needed */
683 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
684 qemu_chr_read(chr, term_fifo, 1);
687 /* see if we can absorb more chars */
688 if (term_fifo_size == 0)
694 static void stdio_read(void *opaque)
698 CharDriverState *chr = opaque;
700 size = read(0, buf, 1);
702 /* stdin has been closed. Remove it from the active list. */
703 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
704 qemu_chr_event(chr, CHR_EVENT_CLOSED);
708 if (qemu_chr_can_read(chr) > 0) {
709 qemu_chr_read(chr, buf, 1);
710 } else if (term_fifo_size == 0) {
711 term_fifo[term_fifo_size++] = buf[0];
716 /* init terminal so that we can grab keys */
717 static struct termios oldtty;
718 static int old_fd0_flags;
719 static int term_atexit_done;
721 static void term_exit(void)
723 tcsetattr (0, TCSANOW, &oldtty);
724 fcntl(0, F_SETFL, old_fd0_flags);
727 static void term_init(QemuOpts *opts)
733 old_fd0_flags = fcntl(0, F_GETFL);
735 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
736 |INLCR|IGNCR|ICRNL|IXON);
737 tty.c_oflag |= OPOST;
738 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
739 /* if graphical mode, we allow Ctrl-C handling */
740 if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
741 tty.c_lflag &= ~ISIG;
742 tty.c_cflag &= ~(CSIZE|PARENB);
747 tcsetattr (0, TCSANOW, &tty);
749 if (!term_atexit_done++)
752 fcntl(0, F_SETFL, O_NONBLOCK);
755 static void qemu_chr_close_stdio(struct CharDriverState *chr)
759 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
763 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
765 CharDriverState *chr;
767 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
769 chr = qemu_chr_open_fd(0, 1);
770 chr->chr_close = qemu_chr_close_stdio;
771 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
779 /* Once Solaris has openpty(), this is going to be removed. */
780 static int openpty(int *amaster, int *aslave, char *name,
781 struct termios *termp, struct winsize *winp)
784 int mfd = -1, sfd = -1;
786 *amaster = *aslave = -1;
788 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
792 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
795 if ((slave = ptsname(mfd)) == NULL)
798 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
801 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
802 (termp != NULL && tcgetattr(sfd, termp) < 0))
810 ioctl(sfd, TIOCSWINSZ, winp);
821 static void cfmakeraw (struct termios *termios_p)
823 termios_p->c_iflag &=
824 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
825 termios_p->c_oflag &= ~OPOST;
826 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
827 termios_p->c_cflag &= ~(CSIZE|PARENB);
828 termios_p->c_cflag |= CS8;
830 termios_p->c_cc[VMIN] = 0;
831 termios_p->c_cc[VTIME] = 0;
835 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
836 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
837 || defined(__GLIBC__)
847 static void pty_chr_update_read_handler(CharDriverState *chr);
848 static void pty_chr_state(CharDriverState *chr, int connected);
850 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
852 PtyCharDriver *s = chr->opaque;
855 /* guest sends data, check for (re-)connect */
856 pty_chr_update_read_handler(chr);
859 return send_all(s->fd, buf, len);
862 static int pty_chr_read_poll(void *opaque)
864 CharDriverState *chr = opaque;
865 PtyCharDriver *s = chr->opaque;
867 s->read_bytes = qemu_chr_can_read(chr);
868 return s->read_bytes;
871 static void pty_chr_read(void *opaque)
873 CharDriverState *chr = opaque;
874 PtyCharDriver *s = chr->opaque;
876 uint8_t buf[READ_BUF_LEN];
879 if (len > s->read_bytes)
883 size = read(s->fd, buf, len);
884 if ((size == -1 && errno == EIO) ||
886 pty_chr_state(chr, 0);
890 pty_chr_state(chr, 1);
891 qemu_chr_read(chr, buf, size);
895 static void pty_chr_update_read_handler(CharDriverState *chr)
897 PtyCharDriver *s = chr->opaque;
899 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
900 pty_chr_read, NULL, chr);
903 * Short timeout here: just need wait long enougth that qemu makes
904 * it through the poll loop once. When reconnected we want a
905 * short timeout so we notice it almost instantly. Otherwise
906 * read() gives us -EIO instantly, making pty_chr_state() reset the
907 * timeout to the normal (much longer) poll interval before the
910 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
913 static void pty_chr_state(CharDriverState *chr, int connected)
915 PtyCharDriver *s = chr->opaque;
918 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
921 /* (re-)connect poll interval for idle guests: once per second.
922 * We check more frequently in case the guests sends data to
923 * the virtual device linked to our pty. */
924 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
927 qemu_chr_generic_open(chr);
932 static void pty_chr_timer(void *opaque)
934 struct CharDriverState *chr = opaque;
935 PtyCharDriver *s = chr->opaque;
940 /* If we arrive here without polling being cleared due
941 * read returning -EIO, then we are (re-)connected */
942 pty_chr_state(chr, 1);
947 pty_chr_update_read_handler(chr);
950 static void pty_chr_close(struct CharDriverState *chr)
952 PtyCharDriver *s = chr->opaque;
954 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
956 qemu_del_timer(s->timer);
957 qemu_free_timer(s->timer);
959 qemu_chr_event(chr, CHR_EVENT_CLOSED);
962 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
964 CharDriverState *chr;
968 #if defined(__OpenBSD__) || defined(__DragonFly__)
969 char pty_name[PATH_MAX];
970 #define q_ptsname(x) pty_name
972 char *pty_name = NULL;
973 #define q_ptsname(x) ptsname(x)
976 chr = qemu_mallocz(sizeof(CharDriverState));
977 s = qemu_mallocz(sizeof(PtyCharDriver));
979 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
983 /* Set raw attributes on the pty. */
984 tcgetattr(slave_fd, &tty);
986 tcsetattr(slave_fd, TCSAFLUSH, &tty);
989 len = strlen(q_ptsname(s->fd)) + 5;
990 chr->filename = qemu_malloc(len);
991 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
992 qemu_opt_set(opts, "path", q_ptsname(s->fd));
993 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
996 chr->chr_write = pty_chr_write;
997 chr->chr_update_read_handler = pty_chr_update_read_handler;
998 chr->chr_close = pty_chr_close;
1000 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
1005 static void tty_serial_init(int fd, int speed,
1006 int parity, int data_bits, int stop_bits)
1012 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1013 speed, parity, data_bits, stop_bits);
1015 tcgetattr (fd, &tty);
1017 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1018 speed = speed * 10 / 11;
1035 /* Non-Posix values follow. They may be unsupported on some systems. */
1037 check_speed(115200);
1039 check_speed(230400);
1042 check_speed(460800);
1045 check_speed(500000);
1048 check_speed(576000);
1051 check_speed(921600);
1054 check_speed(1000000);
1057 check_speed(1152000);
1060 check_speed(1500000);
1063 check_speed(2000000);
1066 check_speed(2500000);
1069 check_speed(3000000);
1072 check_speed(3500000);
1075 check_speed(4000000);
1080 cfsetispeed(&tty, spd);
1081 cfsetospeed(&tty, spd);
1083 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1084 |INLCR|IGNCR|ICRNL|IXON);
1085 tty.c_oflag |= OPOST;
1086 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1087 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1108 tty.c_cflag |= PARENB;
1111 tty.c_cflag |= PARENB | PARODD;
1115 tty.c_cflag |= CSTOPB;
1117 tcsetattr (fd, TCSANOW, &tty);
1120 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1122 FDCharDriver *s = chr->opaque;
1125 case CHR_IOCTL_SERIAL_SET_PARAMS:
1127 QEMUSerialSetParams *ssp = arg;
1128 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1129 ssp->data_bits, ssp->stop_bits);
1132 case CHR_IOCTL_SERIAL_SET_BREAK:
1134 int enable = *(int *)arg;
1136 tcsendbreak(s->fd_in, 1);
1139 case CHR_IOCTL_SERIAL_GET_TIOCM:
1142 int *targ = (int *)arg;
1143 ioctl(s->fd_in, TIOCMGET, &sarg);
1145 if (sarg & TIOCM_CTS)
1146 *targ |= CHR_TIOCM_CTS;
1147 if (sarg & TIOCM_CAR)
1148 *targ |= CHR_TIOCM_CAR;
1149 if (sarg & TIOCM_DSR)
1150 *targ |= CHR_TIOCM_DSR;
1151 if (sarg & TIOCM_RI)
1152 *targ |= CHR_TIOCM_RI;
1153 if (sarg & TIOCM_DTR)
1154 *targ |= CHR_TIOCM_DTR;
1155 if (sarg & TIOCM_RTS)
1156 *targ |= CHR_TIOCM_RTS;
1159 case CHR_IOCTL_SERIAL_SET_TIOCM:
1161 int sarg = *(int *)arg;
1163 ioctl(s->fd_in, TIOCMGET, &targ);
1164 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1165 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1166 if (sarg & CHR_TIOCM_CTS)
1168 if (sarg & CHR_TIOCM_CAR)
1170 if (sarg & CHR_TIOCM_DSR)
1172 if (sarg & CHR_TIOCM_RI)
1174 if (sarg & CHR_TIOCM_DTR)
1176 if (sarg & CHR_TIOCM_RTS)
1178 ioctl(s->fd_in, TIOCMSET, &targ);
1187 static void qemu_chr_close_tty(CharDriverState *chr)
1189 FDCharDriver *s = chr->opaque;
1203 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1205 const char *filename = qemu_opt_get(opts, "path");
1206 CharDriverState *chr;
1209 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1213 tty_serial_init(fd, 115200, 'N', 8, 1);
1214 chr = qemu_chr_open_fd(fd, fd);
1219 chr->chr_ioctl = tty_serial_ioctl;
1220 chr->chr_close = qemu_chr_close_tty;
1223 #else /* ! __linux__ && ! __sun__ */
1224 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1228 #endif /* __linux__ || __sun__ */
1230 #if defined(__linux__)
1234 } ParallelCharDriver;
1236 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1238 if (s->mode != mode) {
1240 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1247 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1249 ParallelCharDriver *drv = chr->opaque;
1254 case CHR_IOCTL_PP_READ_DATA:
1255 if (ioctl(fd, PPRDATA, &b) < 0)
1257 *(uint8_t *)arg = b;
1259 case CHR_IOCTL_PP_WRITE_DATA:
1260 b = *(uint8_t *)arg;
1261 if (ioctl(fd, PPWDATA, &b) < 0)
1264 case CHR_IOCTL_PP_READ_CONTROL:
1265 if (ioctl(fd, PPRCONTROL, &b) < 0)
1267 /* Linux gives only the lowest bits, and no way to know data
1268 direction! For better compatibility set the fixed upper
1270 *(uint8_t *)arg = b | 0xc0;
1272 case CHR_IOCTL_PP_WRITE_CONTROL:
1273 b = *(uint8_t *)arg;
1274 if (ioctl(fd, PPWCONTROL, &b) < 0)
1277 case CHR_IOCTL_PP_READ_STATUS:
1278 if (ioctl(fd, PPRSTATUS, &b) < 0)
1280 *(uint8_t *)arg = b;
1282 case CHR_IOCTL_PP_DATA_DIR:
1283 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1286 case CHR_IOCTL_PP_EPP_READ_ADDR:
1287 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1288 struct ParallelIOArg *parg = arg;
1289 int n = read(fd, parg->buffer, parg->count);
1290 if (n != parg->count) {
1295 case CHR_IOCTL_PP_EPP_READ:
1296 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1297 struct ParallelIOArg *parg = arg;
1298 int n = read(fd, parg->buffer, parg->count);
1299 if (n != parg->count) {
1304 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1305 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1306 struct ParallelIOArg *parg = arg;
1307 int n = write(fd, parg->buffer, parg->count);
1308 if (n != parg->count) {
1313 case CHR_IOCTL_PP_EPP_WRITE:
1314 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1315 struct ParallelIOArg *parg = arg;
1316 int n = write(fd, parg->buffer, parg->count);
1317 if (n != parg->count) {
1328 static void pp_close(CharDriverState *chr)
1330 ParallelCharDriver *drv = chr->opaque;
1333 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1334 ioctl(fd, PPRELEASE);
1337 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1340 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1342 const char *filename = qemu_opt_get(opts, "path");
1343 CharDriverState *chr;
1344 ParallelCharDriver *drv;
1347 TFR(fd = open(filename, O_RDWR));
1351 if (ioctl(fd, PPCLAIM) < 0) {
1356 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1358 drv->mode = IEEE1284_MODE_COMPAT;
1360 chr = qemu_mallocz(sizeof(CharDriverState));
1361 chr->chr_write = null_chr_write;
1362 chr->chr_ioctl = pp_ioctl;
1363 chr->chr_close = pp_close;
1366 qemu_chr_generic_open(chr);
1370 #endif /* __linux__ */
1372 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1373 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1375 int fd = (int)(long)chr->opaque;
1379 case CHR_IOCTL_PP_READ_DATA:
1380 if (ioctl(fd, PPIGDATA, &b) < 0)
1382 *(uint8_t *)arg = b;
1384 case CHR_IOCTL_PP_WRITE_DATA:
1385 b = *(uint8_t *)arg;
1386 if (ioctl(fd, PPISDATA, &b) < 0)
1389 case CHR_IOCTL_PP_READ_CONTROL:
1390 if (ioctl(fd, PPIGCTRL, &b) < 0)
1392 *(uint8_t *)arg = b;
1394 case CHR_IOCTL_PP_WRITE_CONTROL:
1395 b = *(uint8_t *)arg;
1396 if (ioctl(fd, PPISCTRL, &b) < 0)
1399 case CHR_IOCTL_PP_READ_STATUS:
1400 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1402 *(uint8_t *)arg = b;
1410 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1412 const char *filename = qemu_opt_get(opts, "path");
1413 CharDriverState *chr;
1416 fd = open(filename, O_RDWR);
1420 chr = qemu_mallocz(sizeof(CharDriverState));
1421 chr->opaque = (void *)(long)fd;
1422 chr->chr_write = null_chr_write;
1423 chr->chr_ioctl = pp_ioctl;
1432 HANDLE hcom, hrecv, hsend;
1433 OVERLAPPED orecv, osend;
1438 #define NSENDBUF 2048
1439 #define NRECVBUF 2048
1440 #define MAXCONNECT 1
1441 #define NTIMEOUT 5000
1443 static int win_chr_poll(void *opaque);
1444 static int win_chr_pipe_poll(void *opaque);
1446 static void win_chr_close(CharDriverState *chr)
1448 WinCharState *s = chr->opaque;
1451 CloseHandle(s->hsend);
1455 CloseHandle(s->hrecv);
1459 CloseHandle(s->hcom);
1463 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1465 qemu_del_polling_cb(win_chr_poll, chr);
1467 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1470 static int win_chr_init(CharDriverState *chr, const char *filename)
1472 WinCharState *s = chr->opaque;
1474 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1479 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1481 fprintf(stderr, "Failed CreateEvent\n");
1484 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1486 fprintf(stderr, "Failed CreateEvent\n");
1490 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1491 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1492 if (s->hcom == INVALID_HANDLE_VALUE) {
1493 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1498 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1499 fprintf(stderr, "Failed SetupComm\n");
1503 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1504 size = sizeof(COMMCONFIG);
1505 GetDefaultCommConfig(filename, &comcfg, &size);
1506 comcfg.dcb.DCBlength = sizeof(DCB);
1507 CommConfigDialog(filename, NULL, &comcfg);
1509 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1510 fprintf(stderr, "Failed SetCommState\n");
1514 if (!SetCommMask(s->hcom, EV_ERR)) {
1515 fprintf(stderr, "Failed SetCommMask\n");
1519 cto.ReadIntervalTimeout = MAXDWORD;
1520 if (!SetCommTimeouts(s->hcom, &cto)) {
1521 fprintf(stderr, "Failed SetCommTimeouts\n");
1525 if (!ClearCommError(s->hcom, &err, &comstat)) {
1526 fprintf(stderr, "Failed ClearCommError\n");
1529 qemu_add_polling_cb(win_chr_poll, chr);
1537 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1539 WinCharState *s = chr->opaque;
1540 DWORD len, ret, size, err;
1543 ZeroMemory(&s->osend, sizeof(s->osend));
1544 s->osend.hEvent = s->hsend;
1547 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1549 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1551 err = GetLastError();
1552 if (err == ERROR_IO_PENDING) {
1553 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1571 static int win_chr_read_poll(CharDriverState *chr)
1573 WinCharState *s = chr->opaque;
1575 s->max_size = qemu_chr_can_read(chr);
1579 static void win_chr_readfile(CharDriverState *chr)
1581 WinCharState *s = chr->opaque;
1583 uint8_t buf[READ_BUF_LEN];
1586 ZeroMemory(&s->orecv, sizeof(s->orecv));
1587 s->orecv.hEvent = s->hrecv;
1588 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1590 err = GetLastError();
1591 if (err == ERROR_IO_PENDING) {
1592 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1597 qemu_chr_read(chr, buf, size);
1601 static void win_chr_read(CharDriverState *chr)
1603 WinCharState *s = chr->opaque;
1605 if (s->len > s->max_size)
1606 s->len = s->max_size;
1610 win_chr_readfile(chr);
1613 static int win_chr_poll(void *opaque)
1615 CharDriverState *chr = opaque;
1616 WinCharState *s = chr->opaque;
1620 ClearCommError(s->hcom, &comerr, &status);
1621 if (status.cbInQue > 0) {
1622 s->len = status.cbInQue;
1623 win_chr_read_poll(chr);
1630 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1632 const char *filename = qemu_opt_get(opts, "path");
1633 CharDriverState *chr;
1636 chr = qemu_mallocz(sizeof(CharDriverState));
1637 s = qemu_mallocz(sizeof(WinCharState));
1639 chr->chr_write = win_chr_write;
1640 chr->chr_close = win_chr_close;
1642 if (win_chr_init(chr, filename) < 0) {
1647 qemu_chr_generic_open(chr);
1651 static int win_chr_pipe_poll(void *opaque)
1653 CharDriverState *chr = opaque;
1654 WinCharState *s = chr->opaque;
1657 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1660 win_chr_read_poll(chr);
1667 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1669 WinCharState *s = chr->opaque;
1677 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1679 fprintf(stderr, "Failed CreateEvent\n");
1682 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1684 fprintf(stderr, "Failed CreateEvent\n");
1688 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1689 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1690 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1692 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1693 if (s->hcom == INVALID_HANDLE_VALUE) {
1694 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1699 ZeroMemory(&ov, sizeof(ov));
1700 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1701 ret = ConnectNamedPipe(s->hcom, &ov);
1703 fprintf(stderr, "Failed ConnectNamedPipe\n");
1707 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1709 fprintf(stderr, "Failed GetOverlappedResult\n");
1711 CloseHandle(ov.hEvent);
1718 CloseHandle(ov.hEvent);
1721 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1730 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1732 const char *filename = qemu_opt_get(opts, "path");
1733 CharDriverState *chr;
1736 chr = qemu_mallocz(sizeof(CharDriverState));
1737 s = qemu_mallocz(sizeof(WinCharState));
1739 chr->chr_write = win_chr_write;
1740 chr->chr_close = win_chr_close;
1742 if (win_chr_pipe_init(chr, filename) < 0) {
1747 qemu_chr_generic_open(chr);
1751 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1753 CharDriverState *chr;
1756 chr = qemu_mallocz(sizeof(CharDriverState));
1757 s = qemu_mallocz(sizeof(WinCharState));
1760 chr->chr_write = win_chr_write;
1761 qemu_chr_generic_open(chr);
1765 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1767 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1770 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1772 const char *file_out = qemu_opt_get(opts, "path");
1775 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1776 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1777 if (fd_out == INVALID_HANDLE_VALUE)
1780 return qemu_chr_open_win_file(fd_out);
1782 #endif /* !_WIN32 */
1784 /***********************************************************/
1785 /* UDP Net console */
1789 uint8_t buf[READ_BUF_LEN];
1795 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1797 NetCharDriver *s = chr->opaque;
1799 return send(s->fd, (const void *)buf, len, 0);
1802 static int udp_chr_read_poll(void *opaque)
1804 CharDriverState *chr = opaque;
1805 NetCharDriver *s = chr->opaque;
1807 s->max_size = qemu_chr_can_read(chr);
1809 /* If there were any stray characters in the queue process them
1812 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1813 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1815 s->max_size = qemu_chr_can_read(chr);
1820 static void udp_chr_read(void *opaque)
1822 CharDriverState *chr = opaque;
1823 NetCharDriver *s = chr->opaque;
1825 if (s->max_size == 0)
1827 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1828 s->bufptr = s->bufcnt;
1833 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1834 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1836 s->max_size = qemu_chr_can_read(chr);
1840 static void udp_chr_update_read_handler(CharDriverState *chr)
1842 NetCharDriver *s = chr->opaque;
1845 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1846 udp_chr_read, NULL, chr);
1850 static void udp_chr_close(CharDriverState *chr)
1852 NetCharDriver *s = chr->opaque;
1854 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1858 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1861 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1863 CharDriverState *chr = NULL;
1864 NetCharDriver *s = NULL;
1867 chr = qemu_mallocz(sizeof(CharDriverState));
1868 s = qemu_mallocz(sizeof(NetCharDriver));
1870 fd = inet_dgram_opts(opts);
1872 fprintf(stderr, "inet_dgram_opts failed\n");
1880 chr->chr_write = udp_chr_write;
1881 chr->chr_update_read_handler = udp_chr_update_read_handler;
1882 chr->chr_close = udp_chr_close;
1895 /***********************************************************/
1896 /* TCP Net console */
1908 static void tcp_chr_accept(void *opaque);
1910 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1912 TCPCharDriver *s = chr->opaque;
1914 return send_all(s->fd, buf, len);
1916 /* XXX: indicate an error ? */
1921 static int tcp_chr_read_poll(void *opaque)
1923 CharDriverState *chr = opaque;
1924 TCPCharDriver *s = chr->opaque;
1927 s->max_size = qemu_chr_can_read(chr);
1932 #define IAC_BREAK 243
1933 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1935 uint8_t *buf, int *size)
1937 /* Handle any telnet client's basic IAC options to satisfy char by
1938 * char mode with no echo. All IAC options will be removed from
1939 * the buf and the do_telnetopt variable will be used to track the
1940 * state of the width of the IAC information.
1942 * IAC commands come in sets of 3 bytes with the exception of the
1943 * "IAC BREAK" command and the double IAC.
1949 for (i = 0; i < *size; i++) {
1950 if (s->do_telnetopt > 1) {
1951 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1952 /* Double IAC means send an IAC */
1956 s->do_telnetopt = 1;
1958 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1959 /* Handle IAC break commands by sending a serial break */
1960 qemu_chr_event(chr, CHR_EVENT_BREAK);
1965 if (s->do_telnetopt >= 4) {
1966 s->do_telnetopt = 1;
1969 if ((unsigned char)buf[i] == IAC) {
1970 s->do_telnetopt = 2;
1981 static int tcp_get_msgfd(CharDriverState *chr)
1983 TCPCharDriver *s = chr->opaque;
1990 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1992 TCPCharDriver *s = chr->opaque;
1993 struct cmsghdr *cmsg;
1995 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1998 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
1999 cmsg->cmsg_level != SOL_SOCKET ||
2000 cmsg->cmsg_type != SCM_RIGHTS)
2003 fd = *((int *)CMSG_DATA(cmsg));
2013 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2015 TCPCharDriver *s = chr->opaque;
2016 struct msghdr msg = { NULL, };
2017 struct iovec iov[1];
2019 struct cmsghdr cmsg;
2020 char control[CMSG_SPACE(sizeof(int))];
2024 iov[0].iov_base = buf;
2025 iov[0].iov_len = len;
2029 msg.msg_control = &msg_control;
2030 msg.msg_controllen = sizeof(msg_control);
2032 ret = recvmsg(s->fd, &msg, 0);
2033 if (ret > 0 && s->is_unix)
2034 unix_process_msgfd(chr, &msg);
2039 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2041 TCPCharDriver *s = chr->opaque;
2042 return recv(s->fd, buf, len, 0);
2046 static void tcp_chr_read(void *opaque)
2048 CharDriverState *chr = opaque;
2049 TCPCharDriver *s = chr->opaque;
2050 uint8_t buf[READ_BUF_LEN];
2053 if (!s->connected || s->max_size <= 0)
2056 if (len > s->max_size)
2058 size = tcp_chr_recv(chr, (void *)buf, len);
2060 /* connection closed */
2062 if (s->listen_fd >= 0) {
2063 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2065 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2068 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2069 } else if (size > 0) {
2070 if (s->do_telnetopt)
2071 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2073 qemu_chr_read(chr, buf, size);
2078 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2080 return qemu_chr_open_fd(eventfd, eventfd);
2084 static void tcp_chr_connect(void *opaque)
2086 CharDriverState *chr = opaque;
2087 TCPCharDriver *s = chr->opaque;
2090 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2091 tcp_chr_read, NULL, chr);
2092 qemu_chr_generic_open(chr);
2095 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2096 static void tcp_chr_telnet_init(int fd)
2099 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2100 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2101 send(fd, (char *)buf, 3, 0);
2102 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2103 send(fd, (char *)buf, 3, 0);
2104 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2105 send(fd, (char *)buf, 3, 0);
2106 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2107 send(fd, (char *)buf, 3, 0);
2110 static void socket_set_nodelay(int fd)
2113 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2116 static void tcp_chr_accept(void *opaque)
2118 CharDriverState *chr = opaque;
2119 TCPCharDriver *s = chr->opaque;
2120 struct sockaddr_in saddr;
2122 struct sockaddr_un uaddr;
2124 struct sockaddr *addr;
2131 len = sizeof(uaddr);
2132 addr = (struct sockaddr *)&uaddr;
2136 len = sizeof(saddr);
2137 addr = (struct sockaddr *)&saddr;
2139 fd = qemu_accept(s->listen_fd, addr, &len);
2140 if (fd < 0 && errno != EINTR) {
2142 } else if (fd >= 0) {
2143 if (s->do_telnetopt)
2144 tcp_chr_telnet_init(fd);
2148 socket_set_nonblock(fd);
2150 socket_set_nodelay(fd);
2152 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2153 tcp_chr_connect(chr);
2156 static void tcp_chr_close(CharDriverState *chr)
2158 TCPCharDriver *s = chr->opaque;
2160 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2163 if (s->listen_fd >= 0) {
2164 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2165 closesocket(s->listen_fd);
2168 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2171 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2173 CharDriverState *chr = NULL;
2174 TCPCharDriver *s = NULL;
2182 is_listen = qemu_opt_get_bool(opts, "server", 0);
2183 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2184 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2185 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2186 is_unix = qemu_opt_get(opts, "path") != NULL;
2190 chr = qemu_mallocz(sizeof(CharDriverState));
2191 s = qemu_mallocz(sizeof(TCPCharDriver));
2195 fd = unix_listen_opts(opts);
2197 fd = unix_connect_opts(opts);
2201 fd = inet_listen_opts(opts, 0);
2203 fd = inet_connect_opts(opts);
2209 if (!is_waitconnect)
2210 socket_set_nonblock(fd);
2216 s->is_unix = is_unix;
2217 s->do_nodelay = do_nodelay && !is_unix;
2220 chr->chr_write = tcp_chr_write;
2221 chr->chr_close = tcp_chr_close;
2222 chr->get_msgfd = tcp_get_msgfd;
2226 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2228 s->do_telnetopt = 1;
2233 socket_set_nodelay(fd);
2234 tcp_chr_connect(chr);
2237 /* for "info chardev" monitor command */
2238 chr->filename = qemu_malloc(256);
2240 snprintf(chr->filename, 256, "unix:%s%s",
2241 qemu_opt_get(opts, "path"),
2242 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2243 } else if (is_telnet) {
2244 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2245 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2246 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2248 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2249 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2250 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2253 if (is_listen && is_waitconnect) {
2254 printf("QEMU waiting for connection on: %s\n",
2256 tcp_chr_accept(chr);
2257 socket_set_nonblock(s->listen_fd);
2269 /***********************************************************/
2270 /* Memory chardev */
2273 size_t outbuf_capacity;
2277 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2279 MemoryDriver *d = chr->opaque;
2281 /* TODO: the QString implementation has the same code, we should
2282 * introduce a generic way to do this in cutils.c */
2283 if (d->outbuf_capacity < d->outbuf_size + len) {
2285 d->outbuf_capacity += len;
2286 d->outbuf_capacity *= 2;
2287 d->outbuf = qemu_realloc(d->outbuf, d->outbuf_capacity);
2290 memcpy(d->outbuf + d->outbuf_size, buf, len);
2291 d->outbuf_size += len;
2296 void qemu_chr_init_mem(CharDriverState *chr)
2300 d = qemu_malloc(sizeof(*d));
2302 d->outbuf_capacity = 4096;
2303 d->outbuf = qemu_mallocz(d->outbuf_capacity);
2305 memset(chr, 0, sizeof(*chr));
2307 chr->chr_write = mem_chr_write;
2310 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2312 MemoryDriver *d = chr->opaque;
2313 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2316 /* NOTE: this driver can not be closed with qemu_chr_close()! */
2317 void qemu_chr_close_mem(CharDriverState *chr)
2319 MemoryDriver *d = chr->opaque;
2321 qemu_free(d->outbuf);
2322 qemu_free(chr->opaque);
2324 chr->chr_write = NULL;
2327 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2329 const MemoryDriver *d = chr->opaque;
2330 return d->outbuf_size;
2333 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2335 char host[65], port[33], width[8], height[8];
2340 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2344 if (strstart(filename, "mon:", &p)) {
2346 qemu_opt_set(opts, "mux", "on");
2349 if (strcmp(filename, "null") == 0 ||
2350 strcmp(filename, "pty") == 0 ||
2351 strcmp(filename, "msmouse") == 0 ||
2352 strcmp(filename, "braille") == 0 ||
2353 strcmp(filename, "stdio") == 0) {
2354 qemu_opt_set(opts, "backend", filename);
2357 if (strstart(filename, "vc", &p)) {
2358 qemu_opt_set(opts, "backend", "vc");
2360 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2362 qemu_opt_set(opts, "width", width);
2363 qemu_opt_set(opts, "height", height);
2364 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2366 qemu_opt_set(opts, "cols", width);
2367 qemu_opt_set(opts, "rows", height);
2374 if (strcmp(filename, "con:") == 0) {
2375 qemu_opt_set(opts, "backend", "console");
2378 if (strstart(filename, "COM", NULL)) {
2379 qemu_opt_set(opts, "backend", "serial");
2380 qemu_opt_set(opts, "path", filename);
2383 if (strstart(filename, "file:", &p)) {
2384 qemu_opt_set(opts, "backend", "file");
2385 qemu_opt_set(opts, "path", p);
2388 if (strstart(filename, "pipe:", &p)) {
2389 qemu_opt_set(opts, "backend", "pipe");
2390 qemu_opt_set(opts, "path", p);
2393 if (strstart(filename, "tcp:", &p) ||
2394 strstart(filename, "telnet:", &p)) {
2395 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2397 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2400 qemu_opt_set(opts, "backend", "socket");
2401 qemu_opt_set(opts, "host", host);
2402 qemu_opt_set(opts, "port", port);
2403 if (p[pos] == ',') {
2404 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2407 if (strstart(filename, "telnet:", &p))
2408 qemu_opt_set(opts, "telnet", "on");
2411 if (strstart(filename, "udp:", &p)) {
2412 qemu_opt_set(opts, "backend", "udp");
2413 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2415 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2419 qemu_opt_set(opts, "host", host);
2420 qemu_opt_set(opts, "port", port);
2421 if (p[pos] == '@') {
2423 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2425 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2429 qemu_opt_set(opts, "localaddr", host);
2430 qemu_opt_set(opts, "localport", port);
2434 if (strstart(filename, "unix:", &p)) {
2435 qemu_opt_set(opts, "backend", "socket");
2436 if (qemu_opts_do_parse(opts, p, "path") != 0)
2440 if (strstart(filename, "/dev/parport", NULL) ||
2441 strstart(filename, "/dev/ppi", NULL)) {
2442 qemu_opt_set(opts, "backend", "parport");
2443 qemu_opt_set(opts, "path", filename);
2446 if (strstart(filename, "/dev/", NULL)) {
2447 qemu_opt_set(opts, "backend", "tty");
2448 qemu_opt_set(opts, "path", filename);
2453 qemu_opts_del(opts);
2457 static const struct {
2459 CharDriverState *(*open)(QemuOpts *opts);
2460 } backend_table[] = {
2461 { .name = "null", .open = qemu_chr_open_null },
2462 { .name = "socket", .open = qemu_chr_open_socket },
2463 { .name = "udp", .open = qemu_chr_open_udp },
2464 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2465 { .name = "vc", .open = text_console_init },
2467 { .name = "file", .open = qemu_chr_open_win_file_out },
2468 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2469 { .name = "console", .open = qemu_chr_open_win_con },
2470 { .name = "serial", .open = qemu_chr_open_win },
2472 { .name = "file", .open = qemu_chr_open_file_out },
2473 { .name = "pipe", .open = qemu_chr_open_pipe },
2474 { .name = "pty", .open = qemu_chr_open_pty },
2475 { .name = "stdio", .open = qemu_chr_open_stdio },
2477 #ifdef CONFIG_BRLAPI
2478 { .name = "braille", .open = chr_baum_init },
2480 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2481 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2482 || defined(__FreeBSD_kernel__)
2483 { .name = "tty", .open = qemu_chr_open_tty },
2485 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2486 || defined(__FreeBSD_kernel__)
2487 { .name = "parport", .open = qemu_chr_open_pp },
2490 { .name = "spicevmc", .open = qemu_chr_open_spice },
2494 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2495 void (*init)(struct CharDriverState *s))
2497 CharDriverState *chr;
2500 if (qemu_opts_id(opts) == NULL) {
2501 fprintf(stderr, "chardev: no id specified\n");
2505 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2506 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2509 if (i == ARRAY_SIZE(backend_table)) {
2510 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2511 qemu_opt_get(opts, "backend"));
2515 chr = backend_table[i].open(opts);
2517 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2518 qemu_opt_get(opts, "backend"));
2523 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2525 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2527 if (qemu_opt_get_bool(opts, "mux", 0)) {
2528 CharDriverState *base = chr;
2529 int len = strlen(qemu_opts_id(opts)) + 6;
2530 base->label = qemu_malloc(len);
2531 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2532 chr = qemu_chr_open_mux(base);
2533 chr->filename = base->filename;
2534 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2536 chr->label = qemu_strdup(qemu_opts_id(opts));
2540 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2543 CharDriverState *chr;
2546 if (strstart(filename, "chardev:", &p)) {
2547 return qemu_chr_find(p);
2550 opts = qemu_chr_parse_compat(label, filename);
2554 chr = qemu_chr_open_opts(opts, init);
2555 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2556 monitor_init(chr, MONITOR_USE_READLINE);
2561 void qemu_chr_set_echo(struct CharDriverState *chr, bool echo)
2563 if (chr->chr_set_echo) {
2564 chr->chr_set_echo(chr, echo);
2568 void qemu_chr_close(CharDriverState *chr)
2570 QTAILQ_REMOVE(&chardevs, chr, next);
2572 chr->chr_close(chr);
2573 qemu_free(chr->filename);
2574 qemu_free(chr->label);
2578 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2581 Monitor *mon = opaque;
2583 chr_dict = qobject_to_qdict(obj);
2584 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2585 qdict_get_str(chr_dict, "filename"));
2588 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2590 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2593 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2596 CharDriverState *chr;
2598 chr_list = qlist_new();
2600 QTAILQ_FOREACH(chr, &chardevs, next) {
2601 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2602 chr->label, chr->filename);
2603 qlist_append_obj(chr_list, obj);
2606 *ret_data = QOBJECT(chr_list);
2609 CharDriverState *qemu_chr_find(const char *name)
2611 CharDriverState *chr;
2613 QTAILQ_FOREACH(chr, &chardevs, next) {
2614 if (strcmp(chr->label, name) != 0)