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fix migration to obey -S
[qemu-kvm/fedora.git] / qemu-char.c
blob6e2cd315a5ac3dfac8288aa0e3a1ba4e486d83cb
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
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:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
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
22 * THE SOFTWARE.
23 */
24 #include "qemu-common.h"
25 #include "net.h"
26 #include "monitor.h"
27 #include "console.h"
28 #include "sysemu.h"
29 #include "qemu-timer.h"
30 #include "qemu-char.h"
31 #include "block.h"
32 #include "hw/usb.h"
33 #include "hw/baum.h"
34 #include "hw/msmouse.h"
35
36 #include <unistd.h>
37 #include <fcntl.h>
38 #include <signal.h>
39 #include <time.h>
40 #include <errno.h>
41 #include <sys/time.h>
42 #include <zlib.h>
43
44 #ifndef _WIN32
45 #include <sys/times.h>
46 #include <sys/wait.h>
47 #include <termios.h>
48 #include <sys/mman.h>
49 #include <sys/ioctl.h>
50 #include <sys/resource.h>
51 #include <sys/socket.h>
52 #include <netinet/in.h>
53 #include <net/if.h>
54 #ifdef __NetBSD__
55 #include <net/if_tap.h>
56 #endif
57 #ifdef __linux__
58 #include <linux/if_tun.h>
59 #endif
60 #include <arpa/inet.h>
61 #include <dirent.h>
62 #include <netdb.h>
63 #include <sys/select.h>
64 #ifdef HOST_BSD
65 #include <sys/stat.h>
66 #ifdef __FreeBSD__
67 #include <libutil.h>
68 #include <dev/ppbus/ppi.h>
69 #include <dev/ppbus/ppbconf.h>
70 #elif defined(__DragonFly__)
71 #include <libutil.h>
72 #include <dev/misc/ppi/ppi.h>
73 #include <bus/ppbus/ppbconf.h>
74 #else
75 #include <util.h>
76 #endif
77 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
78 #include <freebsd/stdlib.h>
79 #else
80 #ifdef __linux__
81 #include <pty.h>
82
83 #include <linux/ppdev.h>
84 #include <linux/parport.h>
85 #endif
86 #ifdef __sun__
87 #include <sys/stat.h>
88 #include <sys/ethernet.h>
89 #include <sys/sockio.h>
90 #include <netinet/arp.h>
91 #include <netinet/in.h>
92 #include <netinet/in_systm.h>
93 #include <netinet/ip.h>
94 #include <netinet/ip_icmp.h> // must come after ip.h
95 #include <netinet/udp.h>
96 #include <netinet/tcp.h>
97 #include <net/if.h>
98 #include <syslog.h>
99 #include <stropts.h>
100 #endif
101 #endif
102 #endif
103
104 #include "qemu_socket.h"
105
106 /***********************************************************/
107 /* character device */
108
109 static TAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
110 TAILQ_HEAD_INITIALIZER(chardevs);
111 static int initial_reset_issued;
112
113 static void qemu_chr_event(CharDriverState *s, int event)
114 {
115 if (!s->chr_event)
116 return;
117 s->chr_event(s->handler_opaque, event);
118 }
119
120 static void qemu_chr_reset_bh(void *opaque)
121 {
122 CharDriverState *s = opaque;
123 qemu_chr_event(s, CHR_EVENT_RESET);
124 qemu_bh_delete(s->bh);
125 s->bh = NULL;
126 }
127
128 void qemu_chr_reset(CharDriverState *s)
129 {
130 if (s->bh == NULL && initial_reset_issued) {
131 s->bh = qemu_bh_new(qemu_chr_reset_bh, s);
132 qemu_bh_schedule(s->bh);
133 }
134 }
135
136 void qemu_chr_initial_reset(void)
137 {
138 CharDriverState *chr;
139
140 initial_reset_issued = 1;
141
142 TAILQ_FOREACH(chr, &chardevs, next) {
143 qemu_chr_reset(chr);
144 }
145 }
146
147 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
148 {
149 return s->chr_write(s, buf, len);
150 }
151
152 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
153 {
154 if (!s->chr_ioctl)
155 return -ENOTSUP;
156 return s->chr_ioctl(s, cmd, arg);
157 }
158
159 int qemu_chr_can_read(CharDriverState *s)
160 {
161 if (!s->chr_can_read)
162 return 0;
163 return s->chr_can_read(s->handler_opaque);
164 }
165
166 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
167 {
168 s->chr_read(s->handler_opaque, buf, len);
169 }
170
171 int qemu_chr_get_msgfd(CharDriverState *s)
172 {
173 return s->get_msgfd ? s->get_msgfd(s) : -1;
174 }
175
176 void qemu_chr_accept_input(CharDriverState *s)
177 {
178 if (s->chr_accept_input)
179 s->chr_accept_input(s);
180 }
181
182 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
183 {
184 char buf[4096];
185 va_list ap;
186 va_start(ap, fmt);
187 vsnprintf(buf, sizeof(buf), fmt, ap);
188 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
189 va_end(ap);
190 }
191
192 void qemu_chr_send_event(CharDriverState *s, int event)
193 {
194 if (s->chr_send_event)
195 s->chr_send_event(s, event);
196 }
197
198 void qemu_chr_add_handlers(CharDriverState *s,
199 IOCanRWHandler *fd_can_read,
200 IOReadHandler *fd_read,
201 IOEventHandler *fd_event,
202 void *opaque)
203 {
204 s->chr_can_read = fd_can_read;
205 s->chr_read = fd_read;
206 s->chr_event = fd_event;
207 s->handler_opaque = opaque;
208 if (s->chr_update_read_handler)
209 s->chr_update_read_handler(s);
210 }
211
212 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
213 {
214 return len;
215 }
216
217 static CharDriverState *qemu_chr_open_null(void)
218 {
219 CharDriverState *chr;
220
221 chr = qemu_mallocz(sizeof(CharDriverState));
222 chr->chr_write = null_chr_write;
223 return chr;
224 }
225
226 /* MUX driver for serial I/O splitting */
227 #define MAX_MUX 4
228 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
229 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
230 typedef struct {
231 IOCanRWHandler *chr_can_read[MAX_MUX];
232 IOReadHandler *chr_read[MAX_MUX];
233 IOEventHandler *chr_event[MAX_MUX];
234 void *ext_opaque[MAX_MUX];
235 CharDriverState *drv;
236 int mux_cnt;
237 int term_got_escape;
238 int max_size;
239 /* Intermediate input buffer allows to catch escape sequences even if the
240 currently active device is not accepting any input - but only until it
241 is full as well. */
242 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
243 int prod[MAX_MUX];
244 int cons[MAX_MUX];
245 int timestamps;
246 int linestart;
247 int64_t timestamps_start;
248 } MuxDriver;
249
250
251 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
252 {
253 MuxDriver *d = chr->opaque;
254 int ret;
255 if (!d->timestamps) {
256 ret = d->drv->chr_write(d->drv, buf, len);
257 } else {
258 int i;
259
260 ret = 0;
261 for (i = 0; i < len; i++) {
262 if (d->linestart) {
263 char buf1[64];
264 int64_t ti;
265 int secs;
266
267 ti = qemu_get_clock(rt_clock);
268 if (d->timestamps_start == -1)
269 d->timestamps_start = ti;
270 ti -= d->timestamps_start;
271 secs = ti / 1000;
272 snprintf(buf1, sizeof(buf1),
273 "[%02d:%02d:%02d.%03d] ",
274 secs / 3600,
275 (secs / 60) % 60,
276 secs % 60,
277 (int)(ti % 1000));
278 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
279 d->linestart = 0;
280 }
281 ret += d->drv->chr_write(d->drv, buf+i, 1);
282 if (buf[i] == '\n') {
283 d->linestart = 1;
284 }
285 }
286 }
287 return ret;
288 }
289
290 static const char * const mux_help[] = {
291 "% h print this help\n\r",
292 "% x exit emulator\n\r",
293 "% s save disk data back to file (if -snapshot)\n\r",
294 "% t toggle console timestamps\n\r"
295 "% b send break (magic sysrq)\n\r",
296 "% c switch between console and monitor\n\r",
297 "% % sends %\n\r",
298 NULL
299 };
300
301 int term_escape_char = 0x01; /* ctrl-a is used for escape */
302 static void mux_print_help(CharDriverState *chr)
303 {
304 int i, j;
305 char ebuf[15] = "Escape-Char";
306 char cbuf[50] = "\n\r";
307
308 if (term_escape_char > 0 && term_escape_char < 26) {
309 snprintf(cbuf, sizeof(cbuf), "\n\r");
310 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
311 } else {
312 snprintf(cbuf, sizeof(cbuf),
313 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
314 term_escape_char);
315 }
316 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
317 for (i = 0; mux_help[i] != NULL; i++) {
318 for (j=0; mux_help[i][j] != '\0'; j++) {
319 if (mux_help[i][j] == '%')
320 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
321 else
322 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
323 }
324 }
325 }
326
327 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
328 {
329 if (d->chr_event[mux_nr])
330 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
331 }
332
333 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
334 {
335 if (d->term_got_escape) {
336 d->term_got_escape = 0;
337 if (ch == term_escape_char)
338 goto send_char;
339 switch(ch) {
340 case '?':
341 case 'h':
342 mux_print_help(chr);
343 break;
344 case 'x':
345 {
346 const char *term = "QEMU: Terminated\n\r";
347 chr->chr_write(chr,(uint8_t *)term,strlen(term));
348 exit(0);
349 break;
350 }
351 case 's':
352 {
353 int i;
354 for (i = 0; i < nb_drives; i++) {
355 bdrv_commit(drives_table[i].bdrv);
356 }
357 }
358 break;
359 case 'b':
360 qemu_chr_event(chr, CHR_EVENT_BREAK);
361 break;
362 case 'c':
363 /* Switch to the next registered device */
364 mux_chr_send_event(d, chr->focus, CHR_EVENT_MUX_OUT);
365 chr->focus++;
366 if (chr->focus >= d->mux_cnt)
367 chr->focus = 0;
368 mux_chr_send_event(d, chr->focus, CHR_EVENT_MUX_IN);
369 break;
370 case 't':
371 d->timestamps = !d->timestamps;
372 d->timestamps_start = -1;
373 d->linestart = 0;
374 break;
375 }
376 } else if (ch == term_escape_char) {
377 d->term_got_escape = 1;
378 } else {
379 send_char:
380 return 1;
381 }
382 return 0;
383 }
384
385 static void mux_chr_accept_input(CharDriverState *chr)
386 {
387 int m = chr->focus;
388 MuxDriver *d = chr->opaque;
389
390 while (d->prod[m] != d->cons[m] &&
391 d->chr_can_read[m] &&
392 d->chr_can_read[m](d->ext_opaque[m])) {
393 d->chr_read[m](d->ext_opaque[m],
394 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
395 }
396 }
397
398 static int mux_chr_can_read(void *opaque)
399 {
400 CharDriverState *chr = opaque;
401 MuxDriver *d = chr->opaque;
402 int m = chr->focus;
403
404 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
405 return 1;
406 if (d->chr_can_read[m])
407 return d->chr_can_read[m](d->ext_opaque[m]);
408 return 0;
409 }
410
411 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
412 {
413 CharDriverState *chr = opaque;
414 MuxDriver *d = chr->opaque;
415 int m = chr->focus;
416 int i;
417
418 mux_chr_accept_input (opaque);
419
420 for(i = 0; i < size; i++)
421 if (mux_proc_byte(chr, d, buf[i])) {
422 if (d->prod[m] == d->cons[m] &&
423 d->chr_can_read[m] &&
424 d->chr_can_read[m](d->ext_opaque[m]))
425 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
426 else
427 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
428 }
429 }
430
431 static void mux_chr_event(void *opaque, int event)
432 {
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
435 int i;
436
437 /* Send the event to all registered listeners */
438 for (i = 0; i < d->mux_cnt; i++)
439 mux_chr_send_event(d, i, event);
440 }
441
442 static void mux_chr_update_read_handler(CharDriverState *chr)
443 {
444 MuxDriver *d = chr->opaque;
445
446 if (d->mux_cnt >= MAX_MUX) {
447 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
448 return;
449 }
450 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
451 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
452 d->chr_read[d->mux_cnt] = chr->chr_read;
453 d->chr_event[d->mux_cnt] = chr->chr_event;
454 /* Fix up the real driver with mux routines */
455 if (d->mux_cnt == 0) {
456 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
457 mux_chr_event, chr);
458 }
459 chr->focus = d->mux_cnt;
460 d->mux_cnt++;
461 }
462
463 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
464 {
465 CharDriverState *chr;
466 MuxDriver *d;
467
468 chr = qemu_mallocz(sizeof(CharDriverState));
469 d = qemu_mallocz(sizeof(MuxDriver));
470
471 chr->opaque = d;
472 d->drv = drv;
473 chr->focus = -1;
474 chr->chr_write = mux_chr_write;
475 chr->chr_update_read_handler = mux_chr_update_read_handler;
476 chr->chr_accept_input = mux_chr_accept_input;
477 return chr;
478 }
479
480
481 #ifdef _WIN32
482 int send_all(int fd, const void *buf, int len1)
483 {
484 int ret, len;
485
486 len = len1;
487 while (len > 0) {
488 ret = send(fd, buf, len, 0);
489 if (ret < 0) {
490 errno = WSAGetLastError();
491 if (errno != WSAEWOULDBLOCK) {
492 return -1;
493 }
494 } else if (ret == 0) {
495 break;
496 } else {
497 buf += ret;
498 len -= ret;
499 }
500 }
501 return len1 - len;
502 }
503
504 #else
505
506 static int unix_write(int fd, const uint8_t *buf, int len1)
507 {
508 int ret, len;
509
510 len = len1;
511 while (len > 0) {
512 ret = write(fd, buf, len);
513 if (ret < 0) {
514 if (errno != EINTR && errno != EAGAIN)
515 return -1;
516 } else if (ret == 0) {
517 break;
518 } else {
519 buf += ret;
520 len -= ret;
521 }
522 }
523 return len1 - len;
524 }
525
526 int send_all(int fd, const void *buf, int len1)
527 {
528 return unix_write(fd, buf, len1);
529 }
530 #endif /* !_WIN32 */
531
532 #ifndef _WIN32
533
534 typedef struct {
535 int fd_in, fd_out;
536 int max_size;
537 } FDCharDriver;
538
539 #define STDIO_MAX_CLIENTS 1
540 static int stdio_nb_clients = 0;
541
542 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
543 {
544 FDCharDriver *s = chr->opaque;
545 return send_all(s->fd_out, buf, len);
546 }
547
548 static int fd_chr_read_poll(void *opaque)
549 {
550 CharDriverState *chr = opaque;
551 FDCharDriver *s = chr->opaque;
552
553 s->max_size = qemu_chr_can_read(chr);
554 return s->max_size;
555 }
556
557 static void fd_chr_read(void *opaque)
558 {
559 CharDriverState *chr = opaque;
560 FDCharDriver *s = chr->opaque;
561 int size, len;
562 uint8_t buf[1024];
563
564 len = sizeof(buf);
565 if (len > s->max_size)
566 len = s->max_size;
567 if (len == 0)
568 return;
569 size = read(s->fd_in, buf, len);
570 if (size == 0) {
571 /* FD has been closed. Remove it from the active list. */
572 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
573 return;
574 }
575 if (size > 0) {
576 qemu_chr_read(chr, buf, size);
577 }
578 }
579
580 static void fd_chr_update_read_handler(CharDriverState *chr)
581 {
582 FDCharDriver *s = chr->opaque;
583
584 if (s->fd_in >= 0) {
585 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
586 } else {
587 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
588 fd_chr_read, NULL, chr);
589 }
590 }
591 }
592
593 static void fd_chr_close(struct CharDriverState *chr)
594 {
595 FDCharDriver *s = chr->opaque;
596
597 if (s->fd_in >= 0) {
598 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
599 } else {
600 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
601 }
602 }
603
604 qemu_free(s);
605 }
606
607 /* open a character device to a unix fd */
608 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
609 {
610 CharDriverState *chr;
611 FDCharDriver *s;
612
613 chr = qemu_mallocz(sizeof(CharDriverState));
614 s = qemu_mallocz(sizeof(FDCharDriver));
615 s->fd_in = fd_in;
616 s->fd_out = fd_out;
617 chr->opaque = s;
618 chr->chr_write = fd_chr_write;
619 chr->chr_update_read_handler = fd_chr_update_read_handler;
620 chr->chr_close = fd_chr_close;
621
622 qemu_chr_reset(chr);
623
624 return chr;
625 }
626
627 static CharDriverState *qemu_chr_open_file_out(const char *file_out)
628 {
629 int fd_out;
630
631 TFR(fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
632 if (fd_out < 0)
633 return NULL;
634 return qemu_chr_open_fd(-1, fd_out);
635 }
636
637 static CharDriverState *qemu_chr_open_pipe(const char *filename)
638 {
639 int fd_in, fd_out;
640 char filename_in[256], filename_out[256];
641
642 snprintf(filename_in, 256, "%s.in", filename);
643 snprintf(filename_out, 256, "%s.out", filename);
644 TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
645 TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
646 if (fd_in < 0 || fd_out < 0) {
647 if (fd_in >= 0)
648 close(fd_in);
649 if (fd_out >= 0)
650 close(fd_out);
651 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
652 if (fd_in < 0)
653 return NULL;
654 }
655 return qemu_chr_open_fd(fd_in, fd_out);
656 }
657
658
659 /* for STDIO, we handle the case where several clients use it
660 (nographic mode) */
661
662 #define TERM_FIFO_MAX_SIZE 1
663
664 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
665 static int term_fifo_size;
666
667 static int stdio_read_poll(void *opaque)
668 {
669 CharDriverState *chr = opaque;
670
671 /* try to flush the queue if needed */
672 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
673 qemu_chr_read(chr, term_fifo, 1);
674 term_fifo_size = 0;
675 }
676 /* see if we can absorb more chars */
677 if (term_fifo_size == 0)
678 return 1;
679 else
680 return 0;
681 }
682
683 static void stdio_read(void *opaque)
684 {
685 int size;
686 uint8_t buf[1];
687 CharDriverState *chr = opaque;
688
689 size = read(0, buf, 1);
690 if (size == 0) {
691 /* stdin has been closed. Remove it from the active list. */
692 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
693 return;
694 }
695 if (size > 0) {
696 if (qemu_chr_can_read(chr) > 0) {
697 qemu_chr_read(chr, buf, 1);
698 } else if (term_fifo_size == 0) {
699 term_fifo[term_fifo_size++] = buf[0];
700 }
701 }
702 }
703
704 /* init terminal so that we can grab keys */
705 static struct termios oldtty;
706 static int old_fd0_flags;
707 static int term_atexit_done;
708
709 static void term_exit(void)
710 {
711 tcsetattr (0, TCSANOW, &oldtty);
712 fcntl(0, F_SETFL, old_fd0_flags);
713 }
714
715 static void term_init(void)
716 {
717 struct termios tty;
718
719 tcgetattr (0, &tty);
720 oldtty = tty;
721 old_fd0_flags = fcntl(0, F_GETFL);
722
723 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
724 |INLCR|IGNCR|ICRNL|IXON);
725 tty.c_oflag |= OPOST;
726 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
727 /* if graphical mode, we allow Ctrl-C handling */
728 if (display_type == DT_NOGRAPHIC)
729 tty.c_lflag &= ~ISIG;
730 tty.c_cflag &= ~(CSIZE|PARENB);
731 tty.c_cflag |= CS8;
732 tty.c_cc[VMIN] = 1;
733 tty.c_cc[VTIME] = 0;
734
735 tcsetattr (0, TCSANOW, &tty);
736
737 if (!term_atexit_done++)
738 atexit(term_exit);
739
740 fcntl(0, F_SETFL, O_NONBLOCK);
741 }
742
743 static void qemu_chr_close_stdio(struct CharDriverState *chr)
744 {
745 term_exit();
746 stdio_nb_clients--;
747 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
748 fd_chr_close(chr);
749 }
750
751 static CharDriverState *qemu_chr_open_stdio(void)
752 {
753 CharDriverState *chr;
754
755 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
756 return NULL;
757 chr = qemu_chr_open_fd(0, 1);
758 chr->chr_close = qemu_chr_close_stdio;
759 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
760 stdio_nb_clients++;
761 term_init();
762
763 return chr;
764 }
765
766 #ifdef __sun__
767 /* Once Solaris has openpty(), this is going to be removed. */
768 static int openpty(int *amaster, int *aslave, char *name,
769 struct termios *termp, struct winsize *winp)
770 {
771 const char *slave;
772 int mfd = -1, sfd = -1;
773
774 *amaster = *aslave = -1;
775
776 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
777 if (mfd < 0)
778 goto err;
779
780 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
781 goto err;
782
783 if ((slave = ptsname(mfd)) == NULL)
784 goto err;
785
786 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
787 goto err;
788
789 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
790 (termp != NULL && tcgetattr(sfd, termp) < 0))
791 goto err;
792
793 if (amaster)
794 *amaster = mfd;
795 if (aslave)
796 *aslave = sfd;
797 if (winp)
798 ioctl(sfd, TIOCSWINSZ, winp);
799
800 return 0;
801
802 err:
803 if (sfd != -1)
804 close(sfd);
805 close(mfd);
806 return -1;
807 }
808
809 static void cfmakeraw (struct termios *termios_p)
810 {
811 termios_p->c_iflag &=
812 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
813 termios_p->c_oflag &= ~OPOST;
814 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
815 termios_p->c_cflag &= ~(CSIZE|PARENB);
816 termios_p->c_cflag |= CS8;
817
818 termios_p->c_cc[VMIN] = 0;
819 termios_p->c_cc[VTIME] = 0;
820 }
821 #endif
822
823 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
824 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
825
826 typedef struct {
827 int fd;
828 int connected;
829 int polling;
830 int read_bytes;
831 QEMUTimer *timer;
832 } PtyCharDriver;
833
834 static void pty_chr_update_read_handler(CharDriverState *chr);
835 static void pty_chr_state(CharDriverState *chr, int connected);
836
837 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
838 {
839 PtyCharDriver *s = chr->opaque;
840
841 if (!s->connected) {
842 /* guest sends data, check for (re-)connect */
843 pty_chr_update_read_handler(chr);
844 return 0;
845 }
846 return send_all(s->fd, buf, len);
847 }
848
849 static int pty_chr_read_poll(void *opaque)
850 {
851 CharDriverState *chr = opaque;
852 PtyCharDriver *s = chr->opaque;
853
854 s->read_bytes = qemu_chr_can_read(chr);
855 return s->read_bytes;
856 }
857
858 static void pty_chr_read(void *opaque)
859 {
860 CharDriverState *chr = opaque;
861 PtyCharDriver *s = chr->opaque;
862 int size, len;
863 uint8_t buf[1024];
864
865 len = sizeof(buf);
866 if (len > s->read_bytes)
867 len = s->read_bytes;
868 if (len == 0)
869 return;
870 size = read(s->fd, buf, len);
871 if ((size == -1 && errno == EIO) ||
872 (size == 0)) {
873 pty_chr_state(chr, 0);
874 return;
875 }
876 if (size > 0) {
877 pty_chr_state(chr, 1);
878 qemu_chr_read(chr, buf, size);
879 }
880 }
881
882 static void pty_chr_update_read_handler(CharDriverState *chr)
883 {
884 PtyCharDriver *s = chr->opaque;
885
886 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
887 pty_chr_read, NULL, chr);
888 s->polling = 1;
889 /*
890 * Short timeout here: just need wait long enougth that qemu makes
891 * it through the poll loop once. When reconnected we want a
892 * short timeout so we notice it almost instantly. Otherwise
893 * read() gives us -EIO instantly, making pty_chr_state() reset the
894 * timeout to the normal (much longer) poll interval before the
895 * timer triggers.
896 */
897 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
898 }
899
900 static void pty_chr_state(CharDriverState *chr, int connected)
901 {
902 PtyCharDriver *s = chr->opaque;
903
904 if (!connected) {
905 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
906 s->connected = 0;
907 s->polling = 0;
908 /* (re-)connect poll interval for idle guests: once per second.
909 * We check more frequently in case the guests sends data to
910 * the virtual device linked to our pty. */
911 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
912 } else {
913 if (!s->connected)
914 qemu_chr_reset(chr);
915 s->connected = 1;
916 }
917 }
918
919 static void pty_chr_timer(void *opaque)
920 {
921 struct CharDriverState *chr = opaque;
922 PtyCharDriver *s = chr->opaque;
923
924 if (s->connected)
925 return;
926 if (s->polling) {
927 /* If we arrive here without polling being cleared due
928 * read returning -EIO, then we are (re-)connected */
929 pty_chr_state(chr, 1);
930 return;
931 }
932
933 /* Next poll ... */
934 pty_chr_update_read_handler(chr);
935 }
936
937 static void pty_chr_close(struct CharDriverState *chr)
938 {
939 PtyCharDriver *s = chr->opaque;
940
941 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
942 close(s->fd);
943 qemu_del_timer(s->timer);
944 qemu_free_timer(s->timer);
945 qemu_free(s);
946 }
947
948 static CharDriverState *qemu_chr_open_pty(void)
949 {
950 CharDriverState *chr;
951 PtyCharDriver *s;
952 struct termios tty;
953 int slave_fd, len;
954 #if defined(__OpenBSD__) || defined(__DragonFly__)
955 char pty_name[PATH_MAX];
956 #define q_ptsname(x) pty_name
957 #else
958 char *pty_name = NULL;
959 #define q_ptsname(x) ptsname(x)
960 #endif
961
962 chr = qemu_mallocz(sizeof(CharDriverState));
963 s = qemu_mallocz(sizeof(PtyCharDriver));
964
965 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
966 return NULL;
967 }
968
969 /* Set raw attributes on the pty. */
970 tcgetattr(slave_fd, &tty);
971 cfmakeraw(&tty);
972 tcsetattr(slave_fd, TCSAFLUSH, &tty);
973 close(slave_fd);
974
975 len = strlen(q_ptsname(s->fd)) + 5;
976 chr->filename = qemu_malloc(len);
977 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
978 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
979
980 chr->opaque = s;
981 chr->chr_write = pty_chr_write;
982 chr->chr_update_read_handler = pty_chr_update_read_handler;
983 chr->chr_close = pty_chr_close;
984
985 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
986
987 return chr;
988 }
989
990 static void tty_serial_init(int fd, int speed,
991 int parity, int data_bits, int stop_bits)
992 {
993 struct termios tty;
994 speed_t spd;
995
996 #if 0
997 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
998 speed, parity, data_bits, stop_bits);
999 #endif
1000 tcgetattr (fd, &tty);
1001
1002 #define MARGIN 1.1
1003 if (speed <= 50 * MARGIN)
1004 spd = B50;
1005 else if (speed <= 75 * MARGIN)
1006 spd = B75;
1007 else if (speed <= 300 * MARGIN)
1008 spd = B300;
1009 else if (speed <= 600 * MARGIN)
1010 spd = B600;
1011 else if (speed <= 1200 * MARGIN)
1012 spd = B1200;
1013 else if (speed <= 2400 * MARGIN)
1014 spd = B2400;
1015 else if (speed <= 4800 * MARGIN)
1016 spd = B4800;
1017 else if (speed <= 9600 * MARGIN)
1018 spd = B9600;
1019 else if (speed <= 19200 * MARGIN)
1020 spd = B19200;
1021 else if (speed <= 38400 * MARGIN)
1022 spd = B38400;
1023 else if (speed <= 57600 * MARGIN)
1024 spd = B57600;
1025 else if (speed <= 115200 * MARGIN)
1026 spd = B115200;
1027 else
1028 spd = B115200;
1029
1030 cfsetispeed(&tty, spd);
1031 cfsetospeed(&tty, spd);
1032
1033 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1034 |INLCR|IGNCR|ICRNL|IXON);
1035 tty.c_oflag |= OPOST;
1036 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1037 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1038 switch(data_bits) {
1039 default:
1040 case 8:
1041 tty.c_cflag |= CS8;
1042 break;
1043 case 7:
1044 tty.c_cflag |= CS7;
1045 break;
1046 case 6:
1047 tty.c_cflag |= CS6;
1048 break;
1049 case 5:
1050 tty.c_cflag |= CS5;
1051 break;
1052 }
1053 switch(parity) {
1054 default:
1055 case 'N':
1056 break;
1057 case 'E':
1058 tty.c_cflag |= PARENB;
1059 break;
1060 case 'O':
1061 tty.c_cflag |= PARENB | PARODD;
1062 break;
1063 }
1064 if (stop_bits == 2)
1065 tty.c_cflag |= CSTOPB;
1066
1067 tcsetattr (fd, TCSANOW, &tty);
1068 }
1069
1070 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1071 {
1072 FDCharDriver *s = chr->opaque;
1073
1074 switch(cmd) {
1075 case CHR_IOCTL_SERIAL_SET_PARAMS:
1076 {
1077 QEMUSerialSetParams *ssp = arg;
1078 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1079 ssp->data_bits, ssp->stop_bits);
1080 }
1081 break;
1082 case CHR_IOCTL_SERIAL_SET_BREAK:
1083 {
1084 int enable = *(int *)arg;
1085 if (enable)
1086 tcsendbreak(s->fd_in, 1);
1087 }
1088 break;
1089 case CHR_IOCTL_SERIAL_GET_TIOCM:
1090 {
1091 int sarg = 0;
1092 int *targ = (int *)arg;
1093 ioctl(s->fd_in, TIOCMGET, &sarg);
1094 *targ = 0;
1095 if (sarg & TIOCM_CTS)
1096 *targ |= CHR_TIOCM_CTS;
1097 if (sarg & TIOCM_CAR)
1098 *targ |= CHR_TIOCM_CAR;
1099 if (sarg & TIOCM_DSR)
1100 *targ |= CHR_TIOCM_DSR;
1101 if (sarg & TIOCM_RI)
1102 *targ |= CHR_TIOCM_RI;
1103 if (sarg & TIOCM_DTR)
1104 *targ |= CHR_TIOCM_DTR;
1105 if (sarg & TIOCM_RTS)
1106 *targ |= CHR_TIOCM_RTS;
1107 }
1108 break;
1109 case CHR_IOCTL_SERIAL_SET_TIOCM:
1110 {
1111 int sarg = *(int *)arg;
1112 int targ = 0;
1113 ioctl(s->fd_in, TIOCMGET, &targ);
1114 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1115 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1116 if (sarg & CHR_TIOCM_CTS)
1117 targ |= TIOCM_CTS;
1118 if (sarg & CHR_TIOCM_CAR)
1119 targ |= TIOCM_CAR;
1120 if (sarg & CHR_TIOCM_DSR)
1121 targ |= TIOCM_DSR;
1122 if (sarg & CHR_TIOCM_RI)
1123 targ |= TIOCM_RI;
1124 if (sarg & CHR_TIOCM_DTR)
1125 targ |= TIOCM_DTR;
1126 if (sarg & CHR_TIOCM_RTS)
1127 targ |= TIOCM_RTS;
1128 ioctl(s->fd_in, TIOCMSET, &targ);
1129 }
1130 break;
1131 default:
1132 return -ENOTSUP;
1133 }
1134 return 0;
1135 }
1136
1137 static CharDriverState *qemu_chr_open_tty(const char *filename)
1138 {
1139 CharDriverState *chr;
1140 int fd;
1141
1142 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1143 tty_serial_init(fd, 115200, 'N', 8, 1);
1144 chr = qemu_chr_open_fd(fd, fd);
1145 if (!chr) {
1146 close(fd);
1147 return NULL;
1148 }
1149 chr->chr_ioctl = tty_serial_ioctl;
1150 qemu_chr_reset(chr);
1151 return chr;
1152 }
1153 #else /* ! __linux__ && ! __sun__ */
1154 static CharDriverState *qemu_chr_open_pty(void)
1155 {
1156 return NULL;
1157 }
1158 #endif /* __linux__ || __sun__ */
1159
1160 #if defined(__linux__)
1161 typedef struct {
1162 int fd;
1163 int mode;
1164 } ParallelCharDriver;
1165
1166 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1167 {
1168 if (s->mode != mode) {
1169 int m = mode;
1170 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1171 return 0;
1172 s->mode = mode;
1173 }
1174 return 1;
1175 }
1176
1177 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1178 {
1179 ParallelCharDriver *drv = chr->opaque;
1180 int fd = drv->fd;
1181 uint8_t b;
1182
1183 switch(cmd) {
1184 case CHR_IOCTL_PP_READ_DATA:
1185 if (ioctl(fd, PPRDATA, &b) < 0)
1186 return -ENOTSUP;
1187 *(uint8_t *)arg = b;
1188 break;
1189 case CHR_IOCTL_PP_WRITE_DATA:
1190 b = *(uint8_t *)arg;
1191 if (ioctl(fd, PPWDATA, &b) < 0)
1192 return -ENOTSUP;
1193 break;
1194 case CHR_IOCTL_PP_READ_CONTROL:
1195 if (ioctl(fd, PPRCONTROL, &b) < 0)
1196 return -ENOTSUP;
1197 /* Linux gives only the lowest bits, and no way to know data
1198 direction! For better compatibility set the fixed upper
1199 bits. */
1200 *(uint8_t *)arg = b | 0xc0;
1201 break;
1202 case CHR_IOCTL_PP_WRITE_CONTROL:
1203 b = *(uint8_t *)arg;
1204 if (ioctl(fd, PPWCONTROL, &b) < 0)
1205 return -ENOTSUP;
1206 break;
1207 case CHR_IOCTL_PP_READ_STATUS:
1208 if (ioctl(fd, PPRSTATUS, &b) < 0)
1209 return -ENOTSUP;
1210 *(uint8_t *)arg = b;
1211 break;
1212 case CHR_IOCTL_PP_DATA_DIR:
1213 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1214 return -ENOTSUP;
1215 break;
1216 case CHR_IOCTL_PP_EPP_READ_ADDR:
1217 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1218 struct ParallelIOArg *parg = arg;
1219 int n = read(fd, parg->buffer, parg->count);
1220 if (n != parg->count) {
1221 return -EIO;
1222 }
1223 }
1224 break;
1225 case CHR_IOCTL_PP_EPP_READ:
1226 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1227 struct ParallelIOArg *parg = arg;
1228 int n = read(fd, parg->buffer, parg->count);
1229 if (n != parg->count) {
1230 return -EIO;
1231 }
1232 }
1233 break;
1234 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1235 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1236 struct ParallelIOArg *parg = arg;
1237 int n = write(fd, parg->buffer, parg->count);
1238 if (n != parg->count) {
1239 return -EIO;
1240 }
1241 }
1242 break;
1243 case CHR_IOCTL_PP_EPP_WRITE:
1244 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1245 struct ParallelIOArg *parg = arg;
1246 int n = write(fd, parg->buffer, parg->count);
1247 if (n != parg->count) {
1248 return -EIO;
1249 }
1250 }
1251 break;
1252 default:
1253 return -ENOTSUP;
1254 }
1255 return 0;
1256 }
1257
1258 static void pp_close(CharDriverState *chr)
1259 {
1260 ParallelCharDriver *drv = chr->opaque;
1261 int fd = drv->fd;
1262
1263 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1264 ioctl(fd, PPRELEASE);
1265 close(fd);
1266 qemu_free(drv);
1267 }
1268
1269 static CharDriverState *qemu_chr_open_pp(const char *filename)
1270 {
1271 CharDriverState *chr;
1272 ParallelCharDriver *drv;
1273 int fd;
1274
1275 TFR(fd = open(filename, O_RDWR));
1276 if (fd < 0)
1277 return NULL;
1278
1279 if (ioctl(fd, PPCLAIM) < 0) {
1280 close(fd);
1281 return NULL;
1282 }
1283
1284 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1285 drv->fd = fd;
1286 drv->mode = IEEE1284_MODE_COMPAT;
1287
1288 chr = qemu_mallocz(sizeof(CharDriverState));
1289 chr->chr_write = null_chr_write;
1290 chr->chr_ioctl = pp_ioctl;
1291 chr->chr_close = pp_close;
1292 chr->opaque = drv;
1293
1294 qemu_chr_reset(chr);
1295
1296 return chr;
1297 }
1298 #endif /* __linux__ */
1299
1300 #if defined(__FreeBSD__) || defined(__DragonFly__)
1301 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1302 {
1303 int fd = (int)chr->opaque;
1304 uint8_t b;
1305
1306 switch(cmd) {
1307 case CHR_IOCTL_PP_READ_DATA:
1308 if (ioctl(fd, PPIGDATA, &b) < 0)
1309 return -ENOTSUP;
1310 *(uint8_t *)arg = b;
1311 break;
1312 case CHR_IOCTL_PP_WRITE_DATA:
1313 b = *(uint8_t *)arg;
1314 if (ioctl(fd, PPISDATA, &b) < 0)
1315 return -ENOTSUP;
1316 break;
1317 case CHR_IOCTL_PP_READ_CONTROL:
1318 if (ioctl(fd, PPIGCTRL, &b) < 0)
1319 return -ENOTSUP;
1320 *(uint8_t *)arg = b;
1321 break;
1322 case CHR_IOCTL_PP_WRITE_CONTROL:
1323 b = *(uint8_t *)arg;
1324 if (ioctl(fd, PPISCTRL, &b) < 0)
1325 return -ENOTSUP;
1326 break;
1327 case CHR_IOCTL_PP_READ_STATUS:
1328 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1329 return -ENOTSUP;
1330 *(uint8_t *)arg = b;
1331 break;
1332 default:
1333 return -ENOTSUP;
1334 }
1335 return 0;
1336 }
1337
1338 static CharDriverState *qemu_chr_open_pp(const char *filename)
1339 {
1340 CharDriverState *chr;
1341 int fd;
1342
1343 fd = open(filename, O_RDWR);
1344 if (fd < 0)
1345 return NULL;
1346
1347 chr = qemu_mallocz(sizeof(CharDriverState));
1348 chr->opaque = (void *)fd;
1349 chr->chr_write = null_chr_write;
1350 chr->chr_ioctl = pp_ioctl;
1351 return chr;
1352 }
1353 #endif
1354
1355 #else /* _WIN32 */
1356
1357 typedef struct {
1358 int max_size;
1359 HANDLE hcom, hrecv, hsend;
1360 OVERLAPPED orecv, osend;
1361 BOOL fpipe;
1362 DWORD len;
1363 } WinCharState;
1364
1365 #define NSENDBUF 2048
1366 #define NRECVBUF 2048
1367 #define MAXCONNECT 1
1368 #define NTIMEOUT 5000
1369
1370 static int win_chr_poll(void *opaque);
1371 static int win_chr_pipe_poll(void *opaque);
1372
1373 static void win_chr_close(CharDriverState *chr)
1374 {
1375 WinCharState *s = chr->opaque;
1376
1377 if (s->hsend) {
1378 CloseHandle(s->hsend);
1379 s->hsend = NULL;
1380 }
1381 if (s->hrecv) {
1382 CloseHandle(s->hrecv);
1383 s->hrecv = NULL;
1384 }
1385 if (s->hcom) {
1386 CloseHandle(s->hcom);
1387 s->hcom = NULL;
1388 }
1389 if (s->fpipe)
1390 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1391 else
1392 qemu_del_polling_cb(win_chr_poll, chr);
1393 }
1394
1395 static int win_chr_init(CharDriverState *chr, const char *filename)
1396 {
1397 WinCharState *s = chr->opaque;
1398 COMMCONFIG comcfg;
1399 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1400 COMSTAT comstat;
1401 DWORD size;
1402 DWORD err;
1403
1404 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1405 if (!s->hsend) {
1406 fprintf(stderr, "Failed CreateEvent\n");
1407 goto fail;
1408 }
1409 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1410 if (!s->hrecv) {
1411 fprintf(stderr, "Failed CreateEvent\n");
1412 goto fail;
1413 }
1414
1415 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1416 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1417 if (s->hcom == INVALID_HANDLE_VALUE) {
1418 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1419 s->hcom = NULL;
1420 goto fail;
1421 }
1422
1423 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1424 fprintf(stderr, "Failed SetupComm\n");
1425 goto fail;
1426 }
1427
1428 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1429 size = sizeof(COMMCONFIG);
1430 GetDefaultCommConfig(filename, &comcfg, &size);
1431 comcfg.dcb.DCBlength = sizeof(DCB);
1432 CommConfigDialog(filename, NULL, &comcfg);
1433
1434 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1435 fprintf(stderr, "Failed SetCommState\n");
1436 goto fail;
1437 }
1438
1439 if (!SetCommMask(s->hcom, EV_ERR)) {
1440 fprintf(stderr, "Failed SetCommMask\n");
1441 goto fail;
1442 }
1443
1444 cto.ReadIntervalTimeout = MAXDWORD;
1445 if (!SetCommTimeouts(s->hcom, &cto)) {
1446 fprintf(stderr, "Failed SetCommTimeouts\n");
1447 goto fail;
1448 }
1449
1450 if (!ClearCommError(s->hcom, &err, &comstat)) {
1451 fprintf(stderr, "Failed ClearCommError\n");
1452 goto fail;
1453 }
1454 qemu_add_polling_cb(win_chr_poll, chr);
1455 return 0;
1456
1457 fail:
1458 win_chr_close(chr);
1459 return -1;
1460 }
1461
1462 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1463 {
1464 WinCharState *s = chr->opaque;
1465 DWORD len, ret, size, err;
1466
1467 len = len1;
1468 ZeroMemory(&s->osend, sizeof(s->osend));
1469 s->osend.hEvent = s->hsend;
1470 while (len > 0) {
1471 if (s->hsend)
1472 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1473 else
1474 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1475 if (!ret) {
1476 err = GetLastError();
1477 if (err == ERROR_IO_PENDING) {
1478 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1479 if (ret) {
1480 buf += size;
1481 len -= size;
1482 } else {
1483 break;
1484 }
1485 } else {
1486 break;
1487 }
1488 } else {
1489 buf += size;
1490 len -= size;
1491 }
1492 }
1493 return len1 - len;
1494 }
1495
1496 static int win_chr_read_poll(CharDriverState *chr)
1497 {
1498 WinCharState *s = chr->opaque;
1499
1500 s->max_size = qemu_chr_can_read(chr);
1501 return s->max_size;
1502 }
1503
1504 static void win_chr_readfile(CharDriverState *chr)
1505 {
1506 WinCharState *s = chr->opaque;
1507 int ret, err;
1508 uint8_t buf[1024];
1509 DWORD size;
1510
1511 ZeroMemory(&s->orecv, sizeof(s->orecv));
1512 s->orecv.hEvent = s->hrecv;
1513 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1514 if (!ret) {
1515 err = GetLastError();
1516 if (err == ERROR_IO_PENDING) {
1517 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1518 }
1519 }
1520
1521 if (size > 0) {
1522 qemu_chr_read(chr, buf, size);
1523 }
1524 }
1525
1526 static void win_chr_read(CharDriverState *chr)
1527 {
1528 WinCharState *s = chr->opaque;
1529
1530 if (s->len > s->max_size)
1531 s->len = s->max_size;
1532 if (s->len == 0)
1533 return;
1534
1535 win_chr_readfile(chr);
1536 }
1537
1538 static int win_chr_poll(void *opaque)
1539 {
1540 CharDriverState *chr = opaque;
1541 WinCharState *s = chr->opaque;
1542 COMSTAT status;
1543 DWORD comerr;
1544
1545 ClearCommError(s->hcom, &comerr, &status);
1546 if (status.cbInQue > 0) {
1547 s->len = status.cbInQue;
1548 win_chr_read_poll(chr);
1549 win_chr_read(chr);
1550 return 1;
1551 }
1552 return 0;
1553 }
1554
1555 static CharDriverState *qemu_chr_open_win(const char *filename)
1556 {
1557 CharDriverState *chr;
1558 WinCharState *s;
1559
1560 chr = qemu_mallocz(sizeof(CharDriverState));
1561 s = qemu_mallocz(sizeof(WinCharState));
1562 chr->opaque = s;
1563 chr->chr_write = win_chr_write;
1564 chr->chr_close = win_chr_close;
1565
1566 if (win_chr_init(chr, filename) < 0) {
1567 free(s);
1568 free(chr);
1569 return NULL;
1570 }
1571 qemu_chr_reset(chr);
1572 return chr;
1573 }
1574
1575 static int win_chr_pipe_poll(void *opaque)
1576 {
1577 CharDriverState *chr = opaque;
1578 WinCharState *s = chr->opaque;
1579 DWORD size;
1580
1581 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1582 if (size > 0) {
1583 s->len = size;
1584 win_chr_read_poll(chr);
1585 win_chr_read(chr);
1586 return 1;
1587 }
1588 return 0;
1589 }
1590
1591 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1592 {
1593 WinCharState *s = chr->opaque;
1594 OVERLAPPED ov;
1595 int ret;
1596 DWORD size;
1597 char openname[256];
1598
1599 s->fpipe = TRUE;
1600
1601 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1602 if (!s->hsend) {
1603 fprintf(stderr, "Failed CreateEvent\n");
1604 goto fail;
1605 }
1606 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1607 if (!s->hrecv) {
1608 fprintf(stderr, "Failed CreateEvent\n");
1609 goto fail;
1610 }
1611
1612 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1613 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1614 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1615 PIPE_WAIT,
1616 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1617 if (s->hcom == INVALID_HANDLE_VALUE) {
1618 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1619 s->hcom = NULL;
1620 goto fail;
1621 }
1622
1623 ZeroMemory(&ov, sizeof(ov));
1624 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1625 ret = ConnectNamedPipe(s->hcom, &ov);
1626 if (ret) {
1627 fprintf(stderr, "Failed ConnectNamedPipe\n");
1628 goto fail;
1629 }
1630
1631 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1632 if (!ret) {
1633 fprintf(stderr, "Failed GetOverlappedResult\n");
1634 if (ov.hEvent) {
1635 CloseHandle(ov.hEvent);
1636 ov.hEvent = NULL;
1637 }
1638 goto fail;
1639 }
1640
1641 if (ov.hEvent) {
1642 CloseHandle(ov.hEvent);
1643 ov.hEvent = NULL;
1644 }
1645 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1646 return 0;
1647
1648 fail:
1649 win_chr_close(chr);
1650 return -1;
1651 }
1652
1653
1654 static CharDriverState *qemu_chr_open_win_pipe(const char *filename)
1655 {
1656 CharDriverState *chr;
1657 WinCharState *s;
1658
1659 chr = qemu_mallocz(sizeof(CharDriverState));
1660 s = qemu_mallocz(sizeof(WinCharState));
1661 chr->opaque = s;
1662 chr->chr_write = win_chr_write;
1663 chr->chr_close = win_chr_close;
1664
1665 if (win_chr_pipe_init(chr, filename) < 0) {
1666 free(s);
1667 free(chr);
1668 return NULL;
1669 }
1670 qemu_chr_reset(chr);
1671 return chr;
1672 }
1673
1674 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1675 {
1676 CharDriverState *chr;
1677 WinCharState *s;
1678
1679 chr = qemu_mallocz(sizeof(CharDriverState));
1680 s = qemu_mallocz(sizeof(WinCharState));
1681 s->hcom = fd_out;
1682 chr->opaque = s;
1683 chr->chr_write = win_chr_write;
1684 qemu_chr_reset(chr);
1685 return chr;
1686 }
1687
1688 static CharDriverState *qemu_chr_open_win_con(const char *filename)
1689 {
1690 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1691 }
1692
1693 static CharDriverState *qemu_chr_open_win_file_out(const char *file_out)
1694 {
1695 HANDLE fd_out;
1696
1697 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1698 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1699 if (fd_out == INVALID_HANDLE_VALUE)
1700 return NULL;
1701
1702 return qemu_chr_open_win_file(fd_out);
1703 }
1704 #endif /* !_WIN32 */
1705
1706 /***********************************************************/
1707 /* UDP Net console */
1708
1709 typedef struct {
1710 int fd;
1711 struct sockaddr_in daddr;
1712 uint8_t buf[1024];
1713 int bufcnt;
1714 int bufptr;
1715 int max_size;
1716 } NetCharDriver;
1717
1718 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1719 {
1720 NetCharDriver *s = chr->opaque;
1721
1722 return sendto(s->fd, (const void *)buf, len, 0,
1723 (struct sockaddr *)&s->daddr, sizeof(struct sockaddr_in));
1724 }
1725
1726 static int udp_chr_read_poll(void *opaque)
1727 {
1728 CharDriverState *chr = opaque;
1729 NetCharDriver *s = chr->opaque;
1730
1731 s->max_size = qemu_chr_can_read(chr);
1732
1733 /* If there were any stray characters in the queue process them
1734 * first
1735 */
1736 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1737 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1738 s->bufptr++;
1739 s->max_size = qemu_chr_can_read(chr);
1740 }
1741 return s->max_size;
1742 }
1743
1744 static void udp_chr_read(void *opaque)
1745 {
1746 CharDriverState *chr = opaque;
1747 NetCharDriver *s = chr->opaque;
1748
1749 if (s->max_size == 0)
1750 return;
1751 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1752 s->bufptr = s->bufcnt;
1753 if (s->bufcnt <= 0)
1754 return;
1755
1756 s->bufptr = 0;
1757 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1758 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1759 s->bufptr++;
1760 s->max_size = qemu_chr_can_read(chr);
1761 }
1762 }
1763
1764 static void udp_chr_update_read_handler(CharDriverState *chr)
1765 {
1766 NetCharDriver *s = chr->opaque;
1767
1768 if (s->fd >= 0) {
1769 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1770 udp_chr_read, NULL, chr);
1771 }
1772 }
1773
1774 static void udp_chr_close(CharDriverState *chr)
1775 {
1776 NetCharDriver *s = chr->opaque;
1777 if (s->fd >= 0) {
1778 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1779 closesocket(s->fd);
1780 }
1781 qemu_free(s);
1782 }
1783
1784 static CharDriverState *qemu_chr_open_udp(const char *def)
1785 {
1786 CharDriverState *chr = NULL;
1787 NetCharDriver *s = NULL;
1788 int fd = -1;
1789 struct sockaddr_in saddr;
1790
1791 chr = qemu_mallocz(sizeof(CharDriverState));
1792 s = qemu_mallocz(sizeof(NetCharDriver));
1793
1794 fd = socket(PF_INET, SOCK_DGRAM, 0);
1795 if (fd < 0) {
1796 perror("socket(PF_INET, SOCK_DGRAM)");
1797 goto return_err;
1798 }
1799
1800 if (parse_host_src_port(&s->daddr, &saddr, def) < 0) {
1801 printf("Could not parse: %s\n", def);
1802 goto return_err;
1803 }
1804
1805 if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
1806 {
1807 perror("bind");
1808 goto return_err;
1809 }
1810
1811 s->fd = fd;
1812 s->bufcnt = 0;
1813 s->bufptr = 0;
1814 chr->opaque = s;
1815 chr->chr_write = udp_chr_write;
1816 chr->chr_update_read_handler = udp_chr_update_read_handler;
1817 chr->chr_close = udp_chr_close;
1818 return chr;
1819
1820 return_err:
1821 if (chr)
1822 free(chr);
1823 if (s)
1824 free(s);
1825 if (fd >= 0)
1826 closesocket(fd);
1827 return NULL;
1828 }
1829
1830 /***********************************************************/
1831 /* TCP Net console */
1832
1833 typedef struct {
1834 int fd, listen_fd;
1835 int connected;
1836 int max_size;
1837 int do_telnetopt;
1838 int do_nodelay;
1839 int is_unix;
1840 int msgfd;
1841 } TCPCharDriver;
1842
1843 static void tcp_chr_accept(void *opaque);
1844
1845 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1846 {
1847 TCPCharDriver *s = chr->opaque;
1848 if (s->connected) {
1849 return send_all(s->fd, buf, len);
1850 } else {
1851 /* XXX: indicate an error ? */
1852 return len;
1853 }
1854 }
1855
1856 static int tcp_chr_read_poll(void *opaque)
1857 {
1858 CharDriverState *chr = opaque;
1859 TCPCharDriver *s = chr->opaque;
1860 if (!s->connected)
1861 return 0;
1862 s->max_size = qemu_chr_can_read(chr);
1863 return s->max_size;
1864 }
1865
1866 #define IAC 255
1867 #define IAC_BREAK 243
1868 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1869 TCPCharDriver *s,
1870 uint8_t *buf, int *size)
1871 {
1872 /* Handle any telnet client's basic IAC options to satisfy char by
1873 * char mode with no echo. All IAC options will be removed from
1874 * the buf and the do_telnetopt variable will be used to track the
1875 * state of the width of the IAC information.
1876 *
1877 * IAC commands come in sets of 3 bytes with the exception of the
1878 * "IAC BREAK" command and the double IAC.
1879 */
1880
1881 int i;
1882 int j = 0;
1883
1884 for (i = 0; i < *size; i++) {
1885 if (s->do_telnetopt > 1) {
1886 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1887 /* Double IAC means send an IAC */
1888 if (j != i)
1889 buf[j] = buf[i];
1890 j++;
1891 s->do_telnetopt = 1;
1892 } else {
1893 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1894 /* Handle IAC break commands by sending a serial break */
1895 qemu_chr_event(chr, CHR_EVENT_BREAK);
1896 s->do_telnetopt++;
1897 }
1898 s->do_telnetopt++;
1899 }
1900 if (s->do_telnetopt >= 4) {
1901 s->do_telnetopt = 1;
1902 }
1903 } else {
1904 if ((unsigned char)buf[i] == IAC) {
1905 s->do_telnetopt = 2;
1906 } else {
1907 if (j != i)
1908 buf[j] = buf[i];
1909 j++;
1910 }
1911 }
1912 }
1913 *size = j;
1914 }
1915
1916 static int tcp_get_msgfd(CharDriverState *chr)
1917 {
1918 TCPCharDriver *s = chr->opaque;
1919
1920 return s->msgfd;
1921 }
1922
1923 #ifndef WIN32
1924 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1925 {
1926 TCPCharDriver *s = chr->opaque;
1927 struct cmsghdr *cmsg;
1928
1929 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1930 int fd;
1931
1932 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
1933 cmsg->cmsg_level != SOL_SOCKET ||
1934 cmsg->cmsg_type != SCM_RIGHTS)
1935 continue;
1936
1937 fd = *((int *)CMSG_DATA(cmsg));
1938 if (fd < 0)
1939 continue;
1940
1941 if (s->msgfd != -1)
1942 close(s->msgfd);
1943 s->msgfd = fd;
1944 }
1945 }
1946
1947 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1948 {
1949 TCPCharDriver *s = chr->opaque;
1950 struct msghdr msg = { 0, };
1951 struct iovec iov[1];
1952 union {
1953 struct cmsghdr cmsg;
1954 char control[CMSG_SPACE(sizeof(int))];
1955 } msg_control;
1956 ssize_t ret;
1957
1958 iov[0].iov_base = buf;
1959 iov[0].iov_len = len;
1960
1961 msg.msg_iov = iov;
1962 msg.msg_iovlen = 1;
1963 msg.msg_control = &msg_control;
1964 msg.msg_controllen = sizeof(msg_control);
1965
1966 ret = recvmsg(s->fd, &msg, 0);
1967 if (ret > 0 && s->is_unix)
1968 unix_process_msgfd(chr, &msg);
1969
1970 return ret;
1971 }
1972 #else
1973 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1974 {
1975 TCPCharDriver *s = chr->opaque;
1976 return recv(s->fd, buf, len, 0);
1977 }
1978 #endif
1979
1980 static void tcp_chr_read(void *opaque)
1981 {
1982 CharDriverState *chr = opaque;
1983 TCPCharDriver *s = chr->opaque;
1984 uint8_t buf[1024];
1985 int len, size;
1986
1987 if (!s->connected || s->max_size <= 0)
1988 return;
1989 len = sizeof(buf);
1990 if (len > s->max_size)
1991 len = s->max_size;
1992 size = tcp_chr_recv(chr, (void *)buf, len);
1993 if (size == 0) {
1994 /* connection closed */
1995 s->connected = 0;
1996 if (s->listen_fd >= 0) {
1997 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
1998 }
1999 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2000 closesocket(s->fd);
2001 s->fd = -1;
2002 } else if (size > 0) {
2003 if (s->do_telnetopt)
2004 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2005 if (size > 0)
2006 qemu_chr_read(chr, buf, size);
2007 if (s->msgfd != -1) {
2008 close(s->msgfd);
2009 s->msgfd = -1;
2010 }
2011 }
2012 }
2013
2014 static void tcp_chr_connect(void *opaque)
2015 {
2016 CharDriverState *chr = opaque;
2017 TCPCharDriver *s = chr->opaque;
2018
2019 s->connected = 1;
2020 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2021 tcp_chr_read, NULL, chr);
2022 qemu_chr_reset(chr);
2023 }
2024
2025 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2026 static void tcp_chr_telnet_init(int fd)
2027 {
2028 char buf[3];
2029 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2030 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2031 send(fd, (char *)buf, 3, 0);
2032 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2033 send(fd, (char *)buf, 3, 0);
2034 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2035 send(fd, (char *)buf, 3, 0);
2036 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2037 send(fd, (char *)buf, 3, 0);
2038 }
2039
2040 static void socket_set_nodelay(int fd)
2041 {
2042 int val = 1;
2043 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2044 }
2045
2046 static void tcp_chr_accept(void *opaque)
2047 {
2048 CharDriverState *chr = opaque;
2049 TCPCharDriver *s = chr->opaque;
2050 struct sockaddr_in saddr;
2051 #ifndef _WIN32
2052 struct sockaddr_un uaddr;
2053 #endif
2054 struct sockaddr *addr;
2055 socklen_t len;
2056 int fd;
2057
2058 for(;;) {
2059 #ifndef _WIN32
2060 if (s->is_unix) {
2061 len = sizeof(uaddr);
2062 addr = (struct sockaddr *)&uaddr;
2063 } else
2064 #endif
2065 {
2066 len = sizeof(saddr);
2067 addr = (struct sockaddr *)&saddr;
2068 }
2069 fd = accept(s->listen_fd, addr, &len);
2070 if (fd < 0 && errno != EINTR) {
2071 return;
2072 } else if (fd >= 0) {
2073 if (s->do_telnetopt)
2074 tcp_chr_telnet_init(fd);
2075 break;
2076 }
2077 }
2078 socket_set_nonblock(fd);
2079 if (s->do_nodelay)
2080 socket_set_nodelay(fd);
2081 s->fd = fd;
2082 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2083 tcp_chr_connect(chr);
2084 }
2085
2086 static void tcp_chr_close(CharDriverState *chr)
2087 {
2088 TCPCharDriver *s = chr->opaque;
2089 if (s->fd >= 0) {
2090 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2091 closesocket(s->fd);
2092 }
2093 if (s->listen_fd >= 0) {
2094 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2095 closesocket(s->listen_fd);
2096 }
2097 qemu_free(s);
2098 }
2099
2100 static CharDriverState *qemu_chr_open_tcp(const char *host_str,
2101 int is_telnet,
2102 int is_unix)
2103 {
2104 CharDriverState *chr = NULL;
2105 TCPCharDriver *s = NULL;
2106 int fd = -1, offset = 0;
2107 int is_listen = 0;
2108 int is_waitconnect = 1;
2109 int do_nodelay = 0;
2110 const char *ptr;
2111
2112 ptr = host_str;
2113 while((ptr = strchr(ptr,','))) {
2114 ptr++;
2115 if (!strncmp(ptr,"server",6)) {
2116 is_listen = 1;
2117 } else if (!strncmp(ptr,"nowait",6)) {
2118 is_waitconnect = 0;
2119 } else if (!strncmp(ptr,"nodelay",6)) {
2120 do_nodelay = 1;
2121 } else if (!strncmp(ptr,"to=",3)) {
2122 /* nothing, inet_listen() parses this one */;
2123 } else if (!strncmp(ptr,"ipv4",4)) {
2124 /* nothing, inet_connect() and inet_listen() parse this one */;
2125 } else if (!strncmp(ptr,"ipv6",4)) {
2126 /* nothing, inet_connect() and inet_listen() parse this one */;
2127 } else {
2128 printf("Unknown option: %s\n", ptr);
2129 goto fail;
2130 }
2131 }
2132 if (!is_listen)
2133 is_waitconnect = 0;
2134
2135 chr = qemu_mallocz(sizeof(CharDriverState));
2136 s = qemu_mallocz(sizeof(TCPCharDriver));
2137
2138 if (is_listen) {
2139 chr->filename = qemu_malloc(256);
2140 if (is_unix) {
2141 pstrcpy(chr->filename, 256, "unix:");
2142 } else if (is_telnet) {
2143 pstrcpy(chr->filename, 256, "telnet:");
2144 } else {
2145 pstrcpy(chr->filename, 256, "tcp:");
2146 }
2147 offset = strlen(chr->filename);
2148 }
2149 if (is_unix) {
2150 if (is_listen) {
2151 fd = unix_listen(host_str, chr->filename + offset, 256 - offset);
2152 } else {
2153 fd = unix_connect(host_str);
2154 }
2155 } else {
2156 if (is_listen) {
2157 fd = inet_listen(host_str, chr->filename + offset, 256 - offset,
2158 SOCK_STREAM, 0);
2159 } else {
2160 fd = inet_connect(host_str, SOCK_STREAM);
2161 }
2162 }
2163 if (fd < 0)
2164 goto fail;
2165
2166 if (!is_waitconnect)
2167 socket_set_nonblock(fd);
2168
2169 s->connected = 0;
2170 s->fd = -1;
2171 s->listen_fd = -1;
2172 s->msgfd = -1;
2173 s->is_unix = is_unix;
2174 s->do_nodelay = do_nodelay && !is_unix;
2175
2176 chr->opaque = s;
2177 chr->chr_write = tcp_chr_write;
2178 chr->chr_close = tcp_chr_close;
2179 chr->get_msgfd = tcp_get_msgfd;
2180
2181 if (is_listen) {
2182 s->listen_fd = fd;
2183 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2184 if (is_telnet)
2185 s->do_telnetopt = 1;
2186 } else {
2187 s->connected = 1;
2188 s->fd = fd;
2189 socket_set_nodelay(fd);
2190 tcp_chr_connect(chr);
2191 }
2192
2193 if (is_listen && is_waitconnect) {
2194 printf("QEMU waiting for connection on: %s\n",
2195 chr->filename ? chr->filename : host_str);
2196 tcp_chr_accept(chr);
2197 socket_set_nonblock(s->listen_fd);
2198 }
2199
2200 return chr;
2201 fail:
2202 if (fd >= 0)
2203 closesocket(fd);
2204 qemu_free(s);
2205 qemu_free(chr);
2206 return NULL;
2207 }
2208
2209 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2210 {
2211 const char *p;
2212 CharDriverState *chr;
2213
2214 if (!strcmp(filename, "vc")) {
2215 chr = text_console_init(0);
2216 } else
2217 if (strstart(filename, "vc:", &p)) {
2218 chr = text_console_init(p);
2219 } else
2220 if (!strcmp(filename, "null")) {
2221 chr = qemu_chr_open_null();
2222 } else
2223 if (strstart(filename, "tcp:", &p)) {
2224 chr = qemu_chr_open_tcp(p, 0, 0);
2225 } else
2226 if (strstart(filename, "telnet:", &p)) {
2227 chr = qemu_chr_open_tcp(p, 1, 0);
2228 } else
2229 if (strstart(filename, "udp:", &p)) {
2230 chr = qemu_chr_open_udp(p);
2231 } else
2232 if (strstart(filename, "mon:", &p)) {
2233 chr = qemu_chr_open(label, p, NULL);
2234 if (chr) {
2235 chr = qemu_chr_open_mux(chr);
2236 monitor_init(chr, MONITOR_USE_READLINE);
2237 } else {
2238 printf("Unable to open driver: %s\n", p);
2239 }
2240 } else if (!strcmp(filename, "msmouse")) {
2241 chr = qemu_chr_open_msmouse();
2242 } else
2243 #ifndef _WIN32
2244 if (strstart(filename, "unix:", &p)) {
2245 chr = qemu_chr_open_tcp(p, 0, 1);
2246 } else if (strstart(filename, "file:", &p)) {
2247 chr = qemu_chr_open_file_out(p);
2248 } else if (strstart(filename, "pipe:", &p)) {
2249 chr = qemu_chr_open_pipe(p);
2250 } else if (!strcmp(filename, "pty")) {
2251 chr = qemu_chr_open_pty();
2252 } else if (!strcmp(filename, "stdio")) {
2253 chr = qemu_chr_open_stdio();
2254 } else
2255 #if defined(__linux__)
2256 if (strstart(filename, "/dev/parport", NULL)) {
2257 chr = qemu_chr_open_pp(filename);
2258 } else
2259 #elif defined(__FreeBSD__) || defined(__DragonFly__)
2260 if (strstart(filename, "/dev/ppi", NULL)) {
2261 chr = qemu_chr_open_pp(filename);
2262 } else
2263 #endif
2264 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2265 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
2266 if (strstart(filename, "/dev/", NULL)) {
2267 chr = qemu_chr_open_tty(filename);
2268 } else
2269 #endif
2270 #else /* !_WIN32 */
2271 if (strstart(filename, "COM", NULL)) {
2272 chr = qemu_chr_open_win(filename);
2273 } else
2274 if (strstart(filename, "pipe:", &p)) {
2275 chr = qemu_chr_open_win_pipe(p);
2276 } else
2277 if (strstart(filename, "con:", NULL)) {
2278 chr = qemu_chr_open_win_con(filename);
2279 } else
2280 if (strstart(filename, "file:", &p)) {
2281 chr = qemu_chr_open_win_file_out(p);
2282 } else
2283 #endif
2284 #ifdef CONFIG_BRLAPI
2285 if (!strcmp(filename, "braille")) {
2286 chr = chr_baum_init();
2287 } else
2288 #endif
2289 {
2290 chr = NULL;
2291 }
2292
2293 if (chr) {
2294 if (!chr->filename)
2295 chr->filename = qemu_strdup(filename);
2296 chr->init = init;
2297 chr->label = qemu_strdup(label);
2298 TAILQ_INSERT_TAIL(&chardevs, chr, next);
2299 }
2300 return chr;
2301 }
2302
2303 void qemu_chr_close(CharDriverState *chr)
2304 {
2305 TAILQ_REMOVE(&chardevs, chr, next);
2306 if (chr->chr_close)
2307 chr->chr_close(chr);
2308 qemu_free(chr->filename);
2309 qemu_free(chr->label);
2310 qemu_free(chr);
2311 }
2312
2313 void qemu_chr_info(Monitor *mon)
2314 {
2315 CharDriverState *chr;
2316
2317 TAILQ_FOREACH(chr, &chardevs, next) {
2318 monitor_printf(mon, "%s: filename=%s\n", chr->label, chr->filename);
2319 }
2320 }
Patches shipped by Fedora