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"
34 #include "hw/msmouse.h"
35 #include "qemu-objects.h"
46 #include <sys/times.h>
50 #include <sys/ioctl.h>
51 #include <sys/resource.h>
52 #include <sys/socket.h>
53 #include <netinet/in.h>
55 #include <arpa/inet.h>
58 #include <sys/select.h>
61 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
63 #include <dev/ppbus/ppi.h>
64 #include <dev/ppbus/ppbconf.h>
65 #if defined(__GLIBC__)
68 #elif defined(__DragonFly__)
70 #include <dev/misc/ppi/ppi.h>
71 #include <bus/ppbus/ppbconf.h>
79 #include <linux/ppdev.h>
80 #include <linux/parport.h>
84 #include <sys/ethernet.h>
85 #include <sys/sockio.h>
86 #include <netinet/arp.h>
87 #include <netinet/in.h>
88 #include <netinet/in_systm.h>
89 #include <netinet/ip.h>
90 #include <netinet/ip_icmp.h> // must come after ip.h
91 #include <netinet/udp.h>
92 #include <netinet/tcp.h>
100 #include "qemu_socket.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));
357 QTAILQ_FOREACH(dinfo, &drives, next) {
358 bdrv_commit(dinfo->bdrv);
363 qemu_chr_event(chr, CHR_EVENT_BREAK);
366 /* Switch to the next registered device */
367 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
369 if (d->focus >= d->mux_cnt)
371 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
374 d->timestamps = !d->timestamps;
375 d->timestamps_start = -1;
379 } else if (ch == term_escape_char) {
380 d->term_got_escape = 1;
388 static void mux_chr_accept_input(CharDriverState *chr)
390 MuxDriver *d = chr->opaque;
393 while (d->prod[m] != d->cons[m] &&
394 d->chr_can_read[m] &&
395 d->chr_can_read[m](d->ext_opaque[m])) {
396 d->chr_read[m](d->ext_opaque[m],
397 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
401 static int mux_chr_can_read(void *opaque)
403 CharDriverState *chr = opaque;
404 MuxDriver *d = chr->opaque;
407 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
409 if (d->chr_can_read[m])
410 return d->chr_can_read[m](d->ext_opaque[m]);
414 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
416 CharDriverState *chr = opaque;
417 MuxDriver *d = chr->opaque;
421 mux_chr_accept_input (opaque);
423 for(i = 0; i < size; i++)
424 if (mux_proc_byte(chr, d, buf[i])) {
425 if (d->prod[m] == d->cons[m] &&
426 d->chr_can_read[m] &&
427 d->chr_can_read[m](d->ext_opaque[m]))
428 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
430 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
434 static void mux_chr_event(void *opaque, int event)
436 CharDriverState *chr = opaque;
437 MuxDriver *d = chr->opaque;
440 /* Send the event to all registered listeners */
441 for (i = 0; i < d->mux_cnt; i++)
442 mux_chr_send_event(d, i, event);
445 static void mux_chr_update_read_handler(CharDriverState *chr)
447 MuxDriver *d = chr->opaque;
449 if (d->mux_cnt >= MAX_MUX) {
450 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
453 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
454 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
455 d->chr_read[d->mux_cnt] = chr->chr_read;
456 d->chr_event[d->mux_cnt] = chr->chr_event;
457 /* Fix up the real driver with mux routines */
458 if (d->mux_cnt == 0) {
459 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
462 if (d->focus != -1) {
463 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
465 d->focus = d->mux_cnt;
467 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
470 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
472 CharDriverState *chr;
475 chr = qemu_mallocz(sizeof(CharDriverState));
476 d = qemu_mallocz(sizeof(MuxDriver));
481 chr->chr_write = mux_chr_write;
482 chr->chr_update_read_handler = mux_chr_update_read_handler;
483 chr->chr_accept_input = mux_chr_accept_input;
485 /* Muxes are always open on creation */
486 qemu_chr_generic_open(chr);
493 int send_all(int fd, const void *buf, int len1)
499 ret = send(fd, buf, len, 0);
501 errno = WSAGetLastError();
502 if (errno != WSAEWOULDBLOCK) {
505 } else if (ret == 0) {
517 static int unix_write(int fd, const uint8_t *buf, int len1)
523 ret = write(fd, buf, len);
525 if (errno != EINTR && errno != EAGAIN)
527 } else if (ret == 0) {
537 int send_all(int fd, const void *buf, int len1)
539 return unix_write(fd, buf, len1);
550 #define STDIO_MAX_CLIENTS 1
551 static int stdio_nb_clients = 0;
553 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
555 FDCharDriver *s = chr->opaque;
556 return send_all(s->fd_out, buf, len);
559 static int fd_chr_read_poll(void *opaque)
561 CharDriverState *chr = opaque;
562 FDCharDriver *s = chr->opaque;
564 s->max_size = qemu_chr_can_read(chr);
568 static void fd_chr_read(void *opaque)
570 CharDriverState *chr = opaque;
571 FDCharDriver *s = chr->opaque;
573 uint8_t buf[READ_BUF_LEN];
576 if (len > s->max_size)
580 size = read(s->fd_in, buf, len);
582 /* FD has been closed. Remove it from the active list. */
583 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
584 qemu_chr_event(chr, CHR_EVENT_CLOSED);
588 qemu_chr_read(chr, buf, size);
592 static void fd_chr_update_read_handler(CharDriverState *chr)
594 FDCharDriver *s = chr->opaque;
597 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
599 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
600 fd_chr_read, NULL, chr);
605 static void fd_chr_close(struct CharDriverState *chr)
607 FDCharDriver *s = chr->opaque;
610 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
612 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
617 qemu_chr_event(chr, CHR_EVENT_CLOSED);
620 /* open a character device to a unix fd */
621 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
623 CharDriverState *chr;
626 chr = qemu_mallocz(sizeof(CharDriverState));
627 s = qemu_mallocz(sizeof(FDCharDriver));
631 chr->chr_write = fd_chr_write;
632 chr->chr_update_read_handler = fd_chr_update_read_handler;
633 chr->chr_close = fd_chr_close;
635 qemu_chr_generic_open(chr);
640 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
644 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
645 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
648 return qemu_chr_open_fd(-1, fd_out);
651 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
654 char filename_in[256], filename_out[256];
655 const char *filename = qemu_opt_get(opts, "path");
657 if (filename == NULL) {
658 fprintf(stderr, "chardev: pipe: no filename given\n");
662 snprintf(filename_in, 256, "%s.in", filename);
663 snprintf(filename_out, 256, "%s.out", filename);
664 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
665 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
666 if (fd_in < 0 || fd_out < 0) {
671 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
675 return qemu_chr_open_fd(fd_in, fd_out);
679 /* for STDIO, we handle the case where several clients use it
682 #define TERM_FIFO_MAX_SIZE 1
684 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
685 static int term_fifo_size;
687 static int stdio_read_poll(void *opaque)
689 CharDriverState *chr = opaque;
691 /* try to flush the queue if needed */
692 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
693 qemu_chr_read(chr, term_fifo, 1);
696 /* see if we can absorb more chars */
697 if (term_fifo_size == 0)
703 static void stdio_read(void *opaque)
707 CharDriverState *chr = opaque;
709 size = read(0, buf, 1);
711 /* stdin has been closed. Remove it from the active list. */
712 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
713 qemu_chr_event(chr, CHR_EVENT_CLOSED);
717 if (qemu_chr_can_read(chr) > 0) {
718 qemu_chr_read(chr, buf, 1);
719 } else if (term_fifo_size == 0) {
720 term_fifo[term_fifo_size++] = buf[0];
725 /* init terminal so that we can grab keys */
726 static struct termios oldtty;
727 static int old_fd0_flags;
728 static int term_atexit_done;
730 static void term_exit(void)
732 tcsetattr (0, TCSANOW, &oldtty);
733 fcntl(0, F_SETFL, old_fd0_flags);
736 static void term_init(QemuOpts *opts)
742 old_fd0_flags = fcntl(0, F_GETFL);
744 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
745 |INLCR|IGNCR|ICRNL|IXON);
746 tty.c_oflag |= OPOST;
747 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
748 /* if graphical mode, we allow Ctrl-C handling */
749 if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
750 tty.c_lflag &= ~ISIG;
751 tty.c_cflag &= ~(CSIZE|PARENB);
756 tcsetattr (0, TCSANOW, &tty);
758 if (!term_atexit_done++)
761 fcntl(0, F_SETFL, O_NONBLOCK);
764 static void qemu_chr_close_stdio(struct CharDriverState *chr)
768 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
772 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
774 CharDriverState *chr;
776 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
778 chr = qemu_chr_open_fd(0, 1);
779 chr->chr_close = qemu_chr_close_stdio;
780 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
788 /* Once Solaris has openpty(), this is going to be removed. */
789 static int openpty(int *amaster, int *aslave, char *name,
790 struct termios *termp, struct winsize *winp)
793 int mfd = -1, sfd = -1;
795 *amaster = *aslave = -1;
797 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
801 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
804 if ((slave = ptsname(mfd)) == NULL)
807 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
810 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
811 (termp != NULL && tcgetattr(sfd, termp) < 0))
819 ioctl(sfd, TIOCSWINSZ, winp);
830 static void cfmakeraw (struct termios *termios_p)
832 termios_p->c_iflag &=
833 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
834 termios_p->c_oflag &= ~OPOST;
835 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
836 termios_p->c_cflag &= ~(CSIZE|PARENB);
837 termios_p->c_cflag |= CS8;
839 termios_p->c_cc[VMIN] = 0;
840 termios_p->c_cc[VTIME] = 0;
844 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
845 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
846 || defined(__GLIBC__)
856 static void pty_chr_update_read_handler(CharDriverState *chr);
857 static void pty_chr_state(CharDriverState *chr, int connected);
859 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
861 PtyCharDriver *s = chr->opaque;
864 /* guest sends data, check for (re-)connect */
865 pty_chr_update_read_handler(chr);
868 return send_all(s->fd, buf, len);
871 static int pty_chr_read_poll(void *opaque)
873 CharDriverState *chr = opaque;
874 PtyCharDriver *s = chr->opaque;
876 s->read_bytes = qemu_chr_can_read(chr);
877 return s->read_bytes;
880 static void pty_chr_read(void *opaque)
882 CharDriverState *chr = opaque;
883 PtyCharDriver *s = chr->opaque;
885 uint8_t buf[READ_BUF_LEN];
888 if (len > s->read_bytes)
892 size = read(s->fd, buf, len);
893 if ((size == -1 && errno == EIO) ||
895 pty_chr_state(chr, 0);
899 pty_chr_state(chr, 1);
900 qemu_chr_read(chr, buf, size);
904 static void pty_chr_update_read_handler(CharDriverState *chr)
906 PtyCharDriver *s = chr->opaque;
908 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
909 pty_chr_read, NULL, chr);
912 * Short timeout here: just need wait long enougth that qemu makes
913 * it through the poll loop once. When reconnected we want a
914 * short timeout so we notice it almost instantly. Otherwise
915 * read() gives us -EIO instantly, making pty_chr_state() reset the
916 * timeout to the normal (much longer) poll interval before the
919 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
922 static void pty_chr_state(CharDriverState *chr, int connected)
924 PtyCharDriver *s = chr->opaque;
927 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
930 /* (re-)connect poll interval for idle guests: once per second.
931 * We check more frequently in case the guests sends data to
932 * the virtual device linked to our pty. */
933 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
936 qemu_chr_generic_open(chr);
941 static void pty_chr_timer(void *opaque)
943 struct CharDriverState *chr = opaque;
944 PtyCharDriver *s = chr->opaque;
949 /* If we arrive here without polling being cleared due
950 * read returning -EIO, then we are (re-)connected */
951 pty_chr_state(chr, 1);
956 pty_chr_update_read_handler(chr);
959 static void pty_chr_close(struct CharDriverState *chr)
961 PtyCharDriver *s = chr->opaque;
963 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
965 qemu_del_timer(s->timer);
966 qemu_free_timer(s->timer);
968 qemu_chr_event(chr, CHR_EVENT_CLOSED);
971 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
973 CharDriverState *chr;
977 #if defined(__OpenBSD__) || defined(__DragonFly__)
978 char pty_name[PATH_MAX];
979 #define q_ptsname(x) pty_name
981 char *pty_name = NULL;
982 #define q_ptsname(x) ptsname(x)
985 chr = qemu_mallocz(sizeof(CharDriverState));
986 s = qemu_mallocz(sizeof(PtyCharDriver));
988 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
992 /* Set raw attributes on the pty. */
993 tcgetattr(slave_fd, &tty);
995 tcsetattr(slave_fd, TCSAFLUSH, &tty);
998 len = strlen(q_ptsname(s->fd)) + 5;
999 chr->filename = qemu_malloc(len);
1000 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
1001 qemu_opt_set(opts, "path", q_ptsname(s->fd));
1002 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
1005 chr->chr_write = pty_chr_write;
1006 chr->chr_update_read_handler = pty_chr_update_read_handler;
1007 chr->chr_close = pty_chr_close;
1009 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
1014 static void tty_serial_init(int fd, int speed,
1015 int parity, int data_bits, int stop_bits)
1021 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1022 speed, parity, data_bits, stop_bits);
1024 tcgetattr (fd, &tty);
1025 if (!term_atexit_done) {
1029 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1030 speed = speed * 10 / 11;
1047 /* Non-Posix values follow. They may be unsupported on some systems. */
1049 check_speed(115200);
1051 check_speed(230400);
1054 check_speed(460800);
1057 check_speed(500000);
1060 check_speed(576000);
1063 check_speed(921600);
1066 check_speed(1000000);
1069 check_speed(1152000);
1072 check_speed(1500000);
1075 check_speed(2000000);
1078 check_speed(2500000);
1081 check_speed(3000000);
1084 check_speed(3500000);
1087 check_speed(4000000);
1092 cfsetispeed(&tty, spd);
1093 cfsetospeed(&tty, spd);
1095 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1096 |INLCR|IGNCR|ICRNL|IXON);
1097 tty.c_oflag |= OPOST;
1098 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1099 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1120 tty.c_cflag |= PARENB;
1123 tty.c_cflag |= PARENB | PARODD;
1127 tty.c_cflag |= CSTOPB;
1129 tcsetattr (fd, TCSANOW, &tty);
1132 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1134 FDCharDriver *s = chr->opaque;
1137 case CHR_IOCTL_SERIAL_SET_PARAMS:
1139 QEMUSerialSetParams *ssp = arg;
1140 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1141 ssp->data_bits, ssp->stop_bits);
1144 case CHR_IOCTL_SERIAL_SET_BREAK:
1146 int enable = *(int *)arg;
1148 tcsendbreak(s->fd_in, 1);
1151 case CHR_IOCTL_SERIAL_GET_TIOCM:
1154 int *targ = (int *)arg;
1155 ioctl(s->fd_in, TIOCMGET, &sarg);
1157 if (sarg & TIOCM_CTS)
1158 *targ |= CHR_TIOCM_CTS;
1159 if (sarg & TIOCM_CAR)
1160 *targ |= CHR_TIOCM_CAR;
1161 if (sarg & TIOCM_DSR)
1162 *targ |= CHR_TIOCM_DSR;
1163 if (sarg & TIOCM_RI)
1164 *targ |= CHR_TIOCM_RI;
1165 if (sarg & TIOCM_DTR)
1166 *targ |= CHR_TIOCM_DTR;
1167 if (sarg & TIOCM_RTS)
1168 *targ |= CHR_TIOCM_RTS;
1171 case CHR_IOCTL_SERIAL_SET_TIOCM:
1173 int sarg = *(int *)arg;
1175 ioctl(s->fd_in, TIOCMGET, &targ);
1176 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1177 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1178 if (sarg & CHR_TIOCM_CTS)
1180 if (sarg & CHR_TIOCM_CAR)
1182 if (sarg & CHR_TIOCM_DSR)
1184 if (sarg & CHR_TIOCM_RI)
1186 if (sarg & CHR_TIOCM_DTR)
1188 if (sarg & CHR_TIOCM_RTS)
1190 ioctl(s->fd_in, TIOCMSET, &targ);
1199 static void tty_exit(void)
1201 tcsetattr(0, TCSANOW, &oldtty);
1204 static void qemu_chr_close_tty(CharDriverState *chr)
1206 FDCharDriver *s = chr->opaque;
1220 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1222 const char *filename = qemu_opt_get(opts, "path");
1223 CharDriverState *chr;
1226 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1230 tty_serial_init(fd, 115200, 'N', 8, 1);
1231 chr = qemu_chr_open_fd(fd, fd);
1236 chr->chr_ioctl = tty_serial_ioctl;
1237 chr->chr_close = qemu_chr_close_tty;
1238 if (!term_atexit_done++)
1242 #else /* ! __linux__ && ! __sun__ */
1243 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1247 #endif /* __linux__ || __sun__ */
1249 #if defined(__linux__)
1253 } ParallelCharDriver;
1255 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1257 if (s->mode != mode) {
1259 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1266 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1268 ParallelCharDriver *drv = chr->opaque;
1273 case CHR_IOCTL_PP_READ_DATA:
1274 if (ioctl(fd, PPRDATA, &b) < 0)
1276 *(uint8_t *)arg = b;
1278 case CHR_IOCTL_PP_WRITE_DATA:
1279 b = *(uint8_t *)arg;
1280 if (ioctl(fd, PPWDATA, &b) < 0)
1283 case CHR_IOCTL_PP_READ_CONTROL:
1284 if (ioctl(fd, PPRCONTROL, &b) < 0)
1286 /* Linux gives only the lowest bits, and no way to know data
1287 direction! For better compatibility set the fixed upper
1289 *(uint8_t *)arg = b | 0xc0;
1291 case CHR_IOCTL_PP_WRITE_CONTROL:
1292 b = *(uint8_t *)arg;
1293 if (ioctl(fd, PPWCONTROL, &b) < 0)
1296 case CHR_IOCTL_PP_READ_STATUS:
1297 if (ioctl(fd, PPRSTATUS, &b) < 0)
1299 *(uint8_t *)arg = b;
1301 case CHR_IOCTL_PP_DATA_DIR:
1302 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1305 case CHR_IOCTL_PP_EPP_READ_ADDR:
1306 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1307 struct ParallelIOArg *parg = arg;
1308 int n = read(fd, parg->buffer, parg->count);
1309 if (n != parg->count) {
1314 case CHR_IOCTL_PP_EPP_READ:
1315 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1316 struct ParallelIOArg *parg = arg;
1317 int n = read(fd, parg->buffer, parg->count);
1318 if (n != parg->count) {
1323 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1324 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1325 struct ParallelIOArg *parg = arg;
1326 int n = write(fd, parg->buffer, parg->count);
1327 if (n != parg->count) {
1332 case CHR_IOCTL_PP_EPP_WRITE:
1333 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1334 struct ParallelIOArg *parg = arg;
1335 int n = write(fd, parg->buffer, parg->count);
1336 if (n != parg->count) {
1347 static void pp_close(CharDriverState *chr)
1349 ParallelCharDriver *drv = chr->opaque;
1352 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1353 ioctl(fd, PPRELEASE);
1356 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1359 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1361 const char *filename = qemu_opt_get(opts, "path");
1362 CharDriverState *chr;
1363 ParallelCharDriver *drv;
1366 TFR(fd = open(filename, O_RDWR));
1370 if (ioctl(fd, PPCLAIM) < 0) {
1375 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1377 drv->mode = IEEE1284_MODE_COMPAT;
1379 chr = qemu_mallocz(sizeof(CharDriverState));
1380 chr->chr_write = null_chr_write;
1381 chr->chr_ioctl = pp_ioctl;
1382 chr->chr_close = pp_close;
1385 qemu_chr_generic_open(chr);
1389 #endif /* __linux__ */
1391 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1392 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1394 int fd = (int)(long)chr->opaque;
1398 case CHR_IOCTL_PP_READ_DATA:
1399 if (ioctl(fd, PPIGDATA, &b) < 0)
1401 *(uint8_t *)arg = b;
1403 case CHR_IOCTL_PP_WRITE_DATA:
1404 b = *(uint8_t *)arg;
1405 if (ioctl(fd, PPISDATA, &b) < 0)
1408 case CHR_IOCTL_PP_READ_CONTROL:
1409 if (ioctl(fd, PPIGCTRL, &b) < 0)
1411 *(uint8_t *)arg = b;
1413 case CHR_IOCTL_PP_WRITE_CONTROL:
1414 b = *(uint8_t *)arg;
1415 if (ioctl(fd, PPISCTRL, &b) < 0)
1418 case CHR_IOCTL_PP_READ_STATUS:
1419 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1421 *(uint8_t *)arg = b;
1429 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1431 const char *filename = qemu_opt_get(opts, "path");
1432 CharDriverState *chr;
1435 fd = open(filename, O_RDWR);
1439 chr = qemu_mallocz(sizeof(CharDriverState));
1440 chr->opaque = (void *)(long)fd;
1441 chr->chr_write = null_chr_write;
1442 chr->chr_ioctl = pp_ioctl;
1451 HANDLE hcom, hrecv, hsend;
1452 OVERLAPPED orecv, osend;
1457 #define NSENDBUF 2048
1458 #define NRECVBUF 2048
1459 #define MAXCONNECT 1
1460 #define NTIMEOUT 5000
1462 static int win_chr_poll(void *opaque);
1463 static int win_chr_pipe_poll(void *opaque);
1465 static void win_chr_close(CharDriverState *chr)
1467 WinCharState *s = chr->opaque;
1470 CloseHandle(s->hsend);
1474 CloseHandle(s->hrecv);
1478 CloseHandle(s->hcom);
1482 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1484 qemu_del_polling_cb(win_chr_poll, chr);
1486 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1489 static int win_chr_init(CharDriverState *chr, const char *filename)
1491 WinCharState *s = chr->opaque;
1493 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1498 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1500 fprintf(stderr, "Failed CreateEvent\n");
1503 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1505 fprintf(stderr, "Failed CreateEvent\n");
1509 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1510 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1511 if (s->hcom == INVALID_HANDLE_VALUE) {
1512 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1517 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1518 fprintf(stderr, "Failed SetupComm\n");
1522 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1523 size = sizeof(COMMCONFIG);
1524 GetDefaultCommConfig(filename, &comcfg, &size);
1525 comcfg.dcb.DCBlength = sizeof(DCB);
1526 CommConfigDialog(filename, NULL, &comcfg);
1528 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1529 fprintf(stderr, "Failed SetCommState\n");
1533 if (!SetCommMask(s->hcom, EV_ERR)) {
1534 fprintf(stderr, "Failed SetCommMask\n");
1538 cto.ReadIntervalTimeout = MAXDWORD;
1539 if (!SetCommTimeouts(s->hcom, &cto)) {
1540 fprintf(stderr, "Failed SetCommTimeouts\n");
1544 if (!ClearCommError(s->hcom, &err, &comstat)) {
1545 fprintf(stderr, "Failed ClearCommError\n");
1548 qemu_add_polling_cb(win_chr_poll, chr);
1556 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1558 WinCharState *s = chr->opaque;
1559 DWORD len, ret, size, err;
1562 ZeroMemory(&s->osend, sizeof(s->osend));
1563 s->osend.hEvent = s->hsend;
1566 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1568 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1570 err = GetLastError();
1571 if (err == ERROR_IO_PENDING) {
1572 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1590 static int win_chr_read_poll(CharDriverState *chr)
1592 WinCharState *s = chr->opaque;
1594 s->max_size = qemu_chr_can_read(chr);
1598 static void win_chr_readfile(CharDriverState *chr)
1600 WinCharState *s = chr->opaque;
1602 uint8_t buf[READ_BUF_LEN];
1605 ZeroMemory(&s->orecv, sizeof(s->orecv));
1606 s->orecv.hEvent = s->hrecv;
1607 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1609 err = GetLastError();
1610 if (err == ERROR_IO_PENDING) {
1611 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1616 qemu_chr_read(chr, buf, size);
1620 static void win_chr_read(CharDriverState *chr)
1622 WinCharState *s = chr->opaque;
1624 if (s->len > s->max_size)
1625 s->len = s->max_size;
1629 win_chr_readfile(chr);
1632 static int win_chr_poll(void *opaque)
1634 CharDriverState *chr = opaque;
1635 WinCharState *s = chr->opaque;
1639 ClearCommError(s->hcom, &comerr, &status);
1640 if (status.cbInQue > 0) {
1641 s->len = status.cbInQue;
1642 win_chr_read_poll(chr);
1649 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1651 const char *filename = qemu_opt_get(opts, "path");
1652 CharDriverState *chr;
1655 chr = qemu_mallocz(sizeof(CharDriverState));
1656 s = qemu_mallocz(sizeof(WinCharState));
1658 chr->chr_write = win_chr_write;
1659 chr->chr_close = win_chr_close;
1661 if (win_chr_init(chr, filename) < 0) {
1666 qemu_chr_generic_open(chr);
1670 static int win_chr_pipe_poll(void *opaque)
1672 CharDriverState *chr = opaque;
1673 WinCharState *s = chr->opaque;
1676 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1679 win_chr_read_poll(chr);
1686 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1688 WinCharState *s = chr->opaque;
1696 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1698 fprintf(stderr, "Failed CreateEvent\n");
1701 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1703 fprintf(stderr, "Failed CreateEvent\n");
1707 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1708 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1709 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1711 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1712 if (s->hcom == INVALID_HANDLE_VALUE) {
1713 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1718 ZeroMemory(&ov, sizeof(ov));
1719 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1720 ret = ConnectNamedPipe(s->hcom, &ov);
1722 fprintf(stderr, "Failed ConnectNamedPipe\n");
1726 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1728 fprintf(stderr, "Failed GetOverlappedResult\n");
1730 CloseHandle(ov.hEvent);
1737 CloseHandle(ov.hEvent);
1740 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1749 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1751 const char *filename = qemu_opt_get(opts, "path");
1752 CharDriverState *chr;
1755 chr = qemu_mallocz(sizeof(CharDriverState));
1756 s = qemu_mallocz(sizeof(WinCharState));
1758 chr->chr_write = win_chr_write;
1759 chr->chr_close = win_chr_close;
1761 if (win_chr_pipe_init(chr, filename) < 0) {
1766 qemu_chr_generic_open(chr);
1770 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1772 CharDriverState *chr;
1775 chr = qemu_mallocz(sizeof(CharDriverState));
1776 s = qemu_mallocz(sizeof(WinCharState));
1779 chr->chr_write = win_chr_write;
1780 qemu_chr_generic_open(chr);
1784 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1786 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1789 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1791 const char *file_out = qemu_opt_get(opts, "path");
1794 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1795 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1796 if (fd_out == INVALID_HANDLE_VALUE)
1799 return qemu_chr_open_win_file(fd_out);
1801 #endif /* !_WIN32 */
1803 /***********************************************************/
1804 /* UDP Net console */
1808 uint8_t buf[READ_BUF_LEN];
1814 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1816 NetCharDriver *s = chr->opaque;
1818 return send(s->fd, (const void *)buf, len, 0);
1821 static int udp_chr_read_poll(void *opaque)
1823 CharDriverState *chr = opaque;
1824 NetCharDriver *s = chr->opaque;
1826 s->max_size = qemu_chr_can_read(chr);
1828 /* If there were any stray characters in the queue process them
1831 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1832 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1834 s->max_size = qemu_chr_can_read(chr);
1839 static void udp_chr_read(void *opaque)
1841 CharDriverState *chr = opaque;
1842 NetCharDriver *s = chr->opaque;
1844 if (s->max_size == 0)
1846 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1847 s->bufptr = s->bufcnt;
1852 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1853 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1855 s->max_size = qemu_chr_can_read(chr);
1859 static void udp_chr_update_read_handler(CharDriverState *chr)
1861 NetCharDriver *s = chr->opaque;
1864 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1865 udp_chr_read, NULL, chr);
1869 static void udp_chr_close(CharDriverState *chr)
1871 NetCharDriver *s = chr->opaque;
1873 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1877 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1880 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1882 CharDriverState *chr = NULL;
1883 NetCharDriver *s = NULL;
1886 chr = qemu_mallocz(sizeof(CharDriverState));
1887 s = qemu_mallocz(sizeof(NetCharDriver));
1889 fd = inet_dgram_opts(opts);
1891 fprintf(stderr, "inet_dgram_opts failed\n");
1899 chr->chr_write = udp_chr_write;
1900 chr->chr_update_read_handler = udp_chr_update_read_handler;
1901 chr->chr_close = udp_chr_close;
1914 /***********************************************************/
1915 /* TCP Net console */
1927 static void tcp_chr_accept(void *opaque);
1929 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1931 TCPCharDriver *s = chr->opaque;
1933 return send_all(s->fd, buf, len);
1935 /* XXX: indicate an error ? */
1940 static int tcp_chr_read_poll(void *opaque)
1942 CharDriverState *chr = opaque;
1943 TCPCharDriver *s = chr->opaque;
1946 s->max_size = qemu_chr_can_read(chr);
1951 #define IAC_BREAK 243
1952 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1954 uint8_t *buf, int *size)
1956 /* Handle any telnet client's basic IAC options to satisfy char by
1957 * char mode with no echo. All IAC options will be removed from
1958 * the buf and the do_telnetopt variable will be used to track the
1959 * state of the width of the IAC information.
1961 * IAC commands come in sets of 3 bytes with the exception of the
1962 * "IAC BREAK" command and the double IAC.
1968 for (i = 0; i < *size; i++) {
1969 if (s->do_telnetopt > 1) {
1970 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1971 /* Double IAC means send an IAC */
1975 s->do_telnetopt = 1;
1977 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1978 /* Handle IAC break commands by sending a serial break */
1979 qemu_chr_event(chr, CHR_EVENT_BREAK);
1984 if (s->do_telnetopt >= 4) {
1985 s->do_telnetopt = 1;
1988 if ((unsigned char)buf[i] == IAC) {
1989 s->do_telnetopt = 2;
2000 static int tcp_get_msgfd(CharDriverState *chr)
2002 TCPCharDriver *s = chr->opaque;
2008 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2010 TCPCharDriver *s = chr->opaque;
2011 struct cmsghdr *cmsg;
2013 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2016 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2017 cmsg->cmsg_level != SOL_SOCKET ||
2018 cmsg->cmsg_type != SCM_RIGHTS)
2021 fd = *((int *)CMSG_DATA(cmsg));
2031 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2033 TCPCharDriver *s = chr->opaque;
2034 struct msghdr msg = { NULL, };
2035 struct iovec iov[1];
2037 struct cmsghdr cmsg;
2038 char control[CMSG_SPACE(sizeof(int))];
2042 iov[0].iov_base = buf;
2043 iov[0].iov_len = len;
2047 msg.msg_control = &msg_control;
2048 msg.msg_controllen = sizeof(msg_control);
2050 ret = recvmsg(s->fd, &msg, 0);
2051 if (ret > 0 && s->is_unix)
2052 unix_process_msgfd(chr, &msg);
2057 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2059 TCPCharDriver *s = chr->opaque;
2060 return recv(s->fd, buf, len, 0);
2064 static void tcp_chr_read(void *opaque)
2066 CharDriverState *chr = opaque;
2067 TCPCharDriver *s = chr->opaque;
2068 uint8_t buf[READ_BUF_LEN];
2071 if (!s->connected || s->max_size <= 0)
2074 if (len > s->max_size)
2076 size = tcp_chr_recv(chr, (void *)buf, len);
2078 /* connection closed */
2080 if (s->listen_fd >= 0) {
2081 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2083 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2086 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2087 } else if (size > 0) {
2088 if (s->do_telnetopt)
2089 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2091 qemu_chr_read(chr, buf, size);
2092 if (s->msgfd != -1) {
2099 static void tcp_chr_connect(void *opaque)
2101 CharDriverState *chr = opaque;
2102 TCPCharDriver *s = chr->opaque;
2105 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2106 tcp_chr_read, NULL, chr);
2107 qemu_chr_generic_open(chr);
2110 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2111 static void tcp_chr_telnet_init(int fd)
2114 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2115 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2116 send(fd, (char *)buf, 3, 0);
2117 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2118 send(fd, (char *)buf, 3, 0);
2119 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2120 send(fd, (char *)buf, 3, 0);
2121 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2122 send(fd, (char *)buf, 3, 0);
2125 static void socket_set_nodelay(int fd)
2128 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2131 static void tcp_chr_accept(void *opaque)
2133 CharDriverState *chr = opaque;
2134 TCPCharDriver *s = chr->opaque;
2135 struct sockaddr_in saddr;
2137 struct sockaddr_un uaddr;
2139 struct sockaddr *addr;
2146 len = sizeof(uaddr);
2147 addr = (struct sockaddr *)&uaddr;
2151 len = sizeof(saddr);
2152 addr = (struct sockaddr *)&saddr;
2154 fd = qemu_accept(s->listen_fd, addr, &len);
2155 if (fd < 0 && errno != EINTR) {
2157 } else if (fd >= 0) {
2158 if (s->do_telnetopt)
2159 tcp_chr_telnet_init(fd);
2163 socket_set_nonblock(fd);
2165 socket_set_nodelay(fd);
2167 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2168 tcp_chr_connect(chr);
2171 static void tcp_chr_close(CharDriverState *chr)
2173 TCPCharDriver *s = chr->opaque;
2175 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2178 if (s->listen_fd >= 0) {
2179 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2180 closesocket(s->listen_fd);
2183 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2186 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2188 CharDriverState *chr = NULL;
2189 TCPCharDriver *s = NULL;
2197 is_listen = qemu_opt_get_bool(opts, "server", 0);
2198 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2199 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2200 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2201 is_unix = qemu_opt_get(opts, "path") != NULL;
2205 chr = qemu_mallocz(sizeof(CharDriverState));
2206 s = qemu_mallocz(sizeof(TCPCharDriver));
2210 fd = unix_listen_opts(opts);
2212 fd = unix_connect_opts(opts);
2216 fd = inet_listen_opts(opts, 0);
2218 fd = inet_connect_opts(opts);
2224 if (!is_waitconnect)
2225 socket_set_nonblock(fd);
2231 s->is_unix = is_unix;
2232 s->do_nodelay = do_nodelay && !is_unix;
2235 chr->chr_write = tcp_chr_write;
2236 chr->chr_close = tcp_chr_close;
2237 chr->get_msgfd = tcp_get_msgfd;
2241 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2243 s->do_telnetopt = 1;
2248 socket_set_nodelay(fd);
2249 tcp_chr_connect(chr);
2252 /* for "info chardev" monitor command */
2253 chr->filename = qemu_malloc(256);
2255 snprintf(chr->filename, 256, "unix:%s%s",
2256 qemu_opt_get(opts, "path"),
2257 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2258 } else if (is_telnet) {
2259 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2260 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2261 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2263 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2264 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2265 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2268 if (is_listen && is_waitconnect) {
2269 printf("QEMU waiting for connection on: %s\n",
2271 tcp_chr_accept(chr);
2272 socket_set_nonblock(s->listen_fd);
2284 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2286 char host[65], port[33], width[8], height[8];
2291 opts = qemu_opts_create(&qemu_chardev_opts, label, 1);
2295 if (strstart(filename, "mon:", &p)) {
2297 qemu_opt_set(opts, "mux", "on");
2300 if (strcmp(filename, "null") == 0 ||
2301 strcmp(filename, "pty") == 0 ||
2302 strcmp(filename, "msmouse") == 0 ||
2303 strcmp(filename, "braille") == 0 ||
2304 strcmp(filename, "stdio") == 0) {
2305 qemu_opt_set(opts, "backend", filename);
2308 if (strstart(filename, "vc", &p)) {
2309 qemu_opt_set(opts, "backend", "vc");
2311 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2313 qemu_opt_set(opts, "width", width);
2314 qemu_opt_set(opts, "height", height);
2315 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2317 qemu_opt_set(opts, "cols", width);
2318 qemu_opt_set(opts, "rows", height);
2325 if (strcmp(filename, "con:") == 0) {
2326 qemu_opt_set(opts, "backend", "console");
2329 if (strstart(filename, "COM", NULL)) {
2330 qemu_opt_set(opts, "backend", "serial");
2331 qemu_opt_set(opts, "path", filename);
2334 if (strstart(filename, "file:", &p)) {
2335 qemu_opt_set(opts, "backend", "file");
2336 qemu_opt_set(opts, "path", p);
2339 if (strstart(filename, "pipe:", &p)) {
2340 qemu_opt_set(opts, "backend", "pipe");
2341 qemu_opt_set(opts, "path", p);
2344 if (strstart(filename, "tcp:", &p) ||
2345 strstart(filename, "telnet:", &p)) {
2346 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2348 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2351 qemu_opt_set(opts, "backend", "socket");
2352 qemu_opt_set(opts, "host", host);
2353 qemu_opt_set(opts, "port", port);
2354 if (p[pos] == ',') {
2355 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2358 if (strstart(filename, "telnet:", &p))
2359 qemu_opt_set(opts, "telnet", "on");
2362 if (strstart(filename, "udp:", &p)) {
2363 qemu_opt_set(opts, "backend", "udp");
2364 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2366 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2370 qemu_opt_set(opts, "host", host);
2371 qemu_opt_set(opts, "port", port);
2372 if (p[pos] == '@') {
2374 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2376 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2380 qemu_opt_set(opts, "localaddr", host);
2381 qemu_opt_set(opts, "localport", port);
2385 if (strstart(filename, "unix:", &p)) {
2386 qemu_opt_set(opts, "backend", "socket");
2387 if (qemu_opts_do_parse(opts, p, "path") != 0)
2391 if (strstart(filename, "/dev/parport", NULL) ||
2392 strstart(filename, "/dev/ppi", NULL)) {
2393 qemu_opt_set(opts, "backend", "parport");
2394 qemu_opt_set(opts, "path", filename);
2397 if (strstart(filename, "/dev/", NULL)) {
2398 qemu_opt_set(opts, "backend", "tty");
2399 qemu_opt_set(opts, "path", filename);
2404 qemu_opts_del(opts);
2408 static const struct {
2410 CharDriverState *(*open)(QemuOpts *opts);
2411 } backend_table[] = {
2412 { .name = "null", .open = qemu_chr_open_null },
2413 { .name = "socket", .open = qemu_chr_open_socket },
2414 { .name = "udp", .open = qemu_chr_open_udp },
2415 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2416 { .name = "vc", .open = text_console_init },
2418 { .name = "file", .open = qemu_chr_open_win_file_out },
2419 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2420 { .name = "console", .open = qemu_chr_open_win_con },
2421 { .name = "serial", .open = qemu_chr_open_win },
2423 { .name = "file", .open = qemu_chr_open_file_out },
2424 { .name = "pipe", .open = qemu_chr_open_pipe },
2425 { .name = "pty", .open = qemu_chr_open_pty },
2426 { .name = "stdio", .open = qemu_chr_open_stdio },
2428 #ifdef CONFIG_BRLAPI
2429 { .name = "braille", .open = chr_baum_init },
2431 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2432 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2433 || defined(__FreeBSD_kernel__)
2434 { .name = "tty", .open = qemu_chr_open_tty },
2436 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2437 || defined(__FreeBSD_kernel__)
2438 { .name = "parport", .open = qemu_chr_open_pp },
2442 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2443 void (*init)(struct CharDriverState *s))
2445 CharDriverState *chr;
2448 if (qemu_opts_id(opts) == NULL) {
2449 fprintf(stderr, "chardev: no id specified\n");
2453 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2454 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2457 if (i == ARRAY_SIZE(backend_table)) {
2458 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2459 qemu_opt_get(opts, "backend"));
2463 chr = backend_table[i].open(opts);
2465 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2466 qemu_opt_get(opts, "backend"));
2471 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2473 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2475 if (qemu_opt_get_bool(opts, "mux", 0)) {
2476 CharDriverState *base = chr;
2477 int len = strlen(qemu_opts_id(opts)) + 6;
2478 base->label = qemu_malloc(len);
2479 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2480 chr = qemu_chr_open_mux(base);
2481 chr->filename = base->filename;
2482 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2484 chr->label = qemu_strdup(qemu_opts_id(opts));
2488 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2491 CharDriverState *chr;
2494 if (strstart(filename, "chardev:", &p)) {
2495 return qemu_chr_find(p);
2498 opts = qemu_chr_parse_compat(label, filename);
2502 chr = qemu_chr_open_opts(opts, init);
2503 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2504 monitor_init(chr, MONITOR_USE_READLINE);
2509 void qemu_chr_close(CharDriverState *chr)
2511 QTAILQ_REMOVE(&chardevs, chr, next);
2513 chr->chr_close(chr);
2514 qemu_free(chr->filename);
2515 qemu_free(chr->label);
2519 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2522 Monitor *mon = opaque;
2524 chr_dict = qobject_to_qdict(obj);
2525 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2526 qdict_get_str(chr_dict, "filename"));
2529 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2531 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2535 * qemu_chr_info(): Character devices information
2537 * Each device is represented by a QDict. The returned QObject is a QList
2540 * The QDict contains the following:
2542 * - "label": device's label
2543 * - "filename": device's file
2547 * [ { "label": "monitor", "filename", "stdio" },
2548 * { "label": "serial0", "filename": "vc" } ]
2550 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2553 CharDriverState *chr;
2555 chr_list = qlist_new();
2557 QTAILQ_FOREACH(chr, &chardevs, next) {
2558 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2559 chr->label, chr->filename);
2560 qlist_append_obj(chr_list, obj);
2563 *ret_data = QOBJECT(chr_list);
2566 CharDriverState *qemu_chr_find(const char *name)
2568 CharDriverState *chr;
2570 QTAILQ_FOREACH(chr, &chardevs, next) {
2571 if (strcmp(chr->label, name) != 0)