?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
net: add tap_read_poll() helper
[qemu-kvm/fedora.git] / qemu-char.c
blob287e0cd3263786491111781836564cbfb226b69b
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 void qemu_chr_accept_input(CharDriverState *s)
172 {
173 if (s->chr_accept_input)
174 s->chr_accept_input(s);
175 }
176
177 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
178 {
179 char buf[4096];
180 va_list ap;
181 va_start(ap, fmt);
182 vsnprintf(buf, sizeof(buf), fmt, ap);
183 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
184 va_end(ap);
185 }
186
187 void qemu_chr_send_event(CharDriverState *s, int event)
188 {
189 if (s->chr_send_event)
190 s->chr_send_event(s, event);
191 }
192
193 void qemu_chr_add_handlers(CharDriverState *s,
194 IOCanRWHandler *fd_can_read,
195 IOReadHandler *fd_read,
196 IOEventHandler *fd_event,
197 void *opaque)
198 {
199 s->chr_can_read = fd_can_read;
200 s->chr_read = fd_read;
201 s->chr_event = fd_event;
202 s->handler_opaque = opaque;
203 if (s->chr_update_read_handler)
204 s->chr_update_read_handler(s);
205 }
206
207 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
208 {
209 return len;
210 }
211
212 static CharDriverState *qemu_chr_open_null(void)
213 {
214 CharDriverState *chr;
215
216 chr = qemu_mallocz(sizeof(CharDriverState));
217 chr->chr_write = null_chr_write;
218 return chr;
219 }
220
221 /* MUX driver for serial I/O splitting */
222 #define MAX_MUX 4
223 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
224 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
225 typedef struct {
226 IOCanRWHandler *chr_can_read[MAX_MUX];
227 IOReadHandler *chr_read[MAX_MUX];
228 IOEventHandler *chr_event[MAX_MUX];
229 void *ext_opaque[MAX_MUX];
230 CharDriverState *drv;
231 int mux_cnt;
232 int term_got_escape;
233 int max_size;
234 /* Intermediate input buffer allows to catch escape sequences even if the
235 currently active device is not accepting any input - but only until it
236 is full as well. */
237 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
238 int prod[MAX_MUX];
239 int cons[MAX_MUX];
240 int timestamps;
241 int linestart;
242 int64_t timestamps_start;
243 } MuxDriver;
244
245
246 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
247 {
248 MuxDriver *d = chr->opaque;
249 int ret;
250 if (!d->timestamps) {
251 ret = d->drv->chr_write(d->drv, buf, len);
252 } else {
253 int i;
254
255 ret = 0;
256 for (i = 0; i < len; i++) {
257 if (d->linestart) {
258 char buf1[64];
259 int64_t ti;
260 int secs;
261
262 ti = qemu_get_clock(rt_clock);
263 if (d->timestamps_start == -1)
264 d->timestamps_start = ti;
265 ti -= d->timestamps_start;
266 secs = ti / 1000;
267 snprintf(buf1, sizeof(buf1),
268 "[%02d:%02d:%02d.%03d] ",
269 secs / 3600,
270 (secs / 60) % 60,
271 secs % 60,
272 (int)(ti % 1000));
273 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
274 d->linestart = 0;
275 }
276 ret += d->drv->chr_write(d->drv, buf+i, 1);
277 if (buf[i] == '\n') {
278 d->linestart = 1;
279 }
280 }
281 }
282 return ret;
283 }
284
285 static const char * const mux_help[] = {
286 "% h print this help\n\r",
287 "% x exit emulator\n\r",
288 "% s save disk data back to file (if -snapshot)\n\r",
289 "% t toggle console timestamps\n\r"
290 "% b send break (magic sysrq)\n\r",
291 "% c switch between console and monitor\n\r",
292 "% % sends %\n\r",
293 NULL
294 };
295
296 int term_escape_char = 0x01; /* ctrl-a is used for escape */
297 static void mux_print_help(CharDriverState *chr)
298 {
299 int i, j;
300 char ebuf[15] = "Escape-Char";
301 char cbuf[50] = "\n\r";
302
303 if (term_escape_char > 0 && term_escape_char < 26) {
304 snprintf(cbuf, sizeof(cbuf), "\n\r");
305 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
306 } else {
307 snprintf(cbuf, sizeof(cbuf),
308 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
309 term_escape_char);
310 }
311 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
312 for (i = 0; mux_help[i] != NULL; i++) {
313 for (j=0; mux_help[i][j] != '\0'; j++) {
314 if (mux_help[i][j] == '%')
315 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
316 else
317 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
318 }
319 }
320 }
321
322 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
323 {
324 if (d->chr_event[mux_nr])
325 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
326 }
327
328 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
329 {
330 if (d->term_got_escape) {
331 d->term_got_escape = 0;
332 if (ch == term_escape_char)
333 goto send_char;
334 switch(ch) {
335 case '?':
336 case 'h':
337 mux_print_help(chr);
338 break;
339 case 'x':
340 {
341 const char *term = "QEMU: Terminated\n\r";
342 chr->chr_write(chr,(uint8_t *)term,strlen(term));
343 exit(0);
344 break;
345 }
346 case 's':
347 {
348 int i;
349 for (i = 0; i < nb_drives; i++) {
350 bdrv_commit(drives_table[i].bdrv);
351 }
352 }
353 break;
354 case 'b':
355 qemu_chr_event(chr, CHR_EVENT_BREAK);
356 break;
357 case 'c':
358 /* Switch to the next registered device */
359 mux_chr_send_event(d, chr->focus, CHR_EVENT_MUX_OUT);
360 chr->focus++;
361 if (chr->focus >= d->mux_cnt)
362 chr->focus = 0;
363 mux_chr_send_event(d, chr->focus, CHR_EVENT_MUX_IN);
364 break;
365 case 't':
366 d->timestamps = !d->timestamps;
367 d->timestamps_start = -1;
368 d->linestart = 0;
369 break;
370 }
371 } else if (ch == term_escape_char) {
372 d->term_got_escape = 1;
373 } else {
374 send_char:
375 return 1;
376 }
377 return 0;
378 }
379
380 static void mux_chr_accept_input(CharDriverState *chr)
381 {
382 int m = chr->focus;
383 MuxDriver *d = chr->opaque;
384
385 while (d->prod[m] != d->cons[m] &&
386 d->chr_can_read[m] &&
387 d->chr_can_read[m](d->ext_opaque[m])) {
388 d->chr_read[m](d->ext_opaque[m],
389 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
390 }
391 }
392
393 static int mux_chr_can_read(void *opaque)
394 {
395 CharDriverState *chr = opaque;
396 MuxDriver *d = chr->opaque;
397 int m = chr->focus;
398
399 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
400 return 1;
401 if (d->chr_can_read[m])
402 return d->chr_can_read[m](d->ext_opaque[m]);
403 return 0;
404 }
405
406 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
407 {
408 CharDriverState *chr = opaque;
409 MuxDriver *d = chr->opaque;
410 int m = chr->focus;
411 int i;
412
413 mux_chr_accept_input (opaque);
414
415 for(i = 0; i < size; i++)
416 if (mux_proc_byte(chr, d, buf[i])) {
417 if (d->prod[m] == d->cons[m] &&
418 d->chr_can_read[m] &&
419 d->chr_can_read[m](d->ext_opaque[m]))
420 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
421 else
422 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
423 }
424 }
425
426 static void mux_chr_event(void *opaque, int event)
427 {
428 CharDriverState *chr = opaque;
429 MuxDriver *d = chr->opaque;
430 int i;
431
432 /* Send the event to all registered listeners */
433 for (i = 0; i < d->mux_cnt; i++)
434 mux_chr_send_event(d, i, event);
435 }
436
437 static void mux_chr_update_read_handler(CharDriverState *chr)
438 {
439 MuxDriver *d = chr->opaque;
440
441 if (d->mux_cnt >= MAX_MUX) {
442 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
443 return;
444 }
445 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
446 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
447 d->chr_read[d->mux_cnt] = chr->chr_read;
448 d->chr_event[d->mux_cnt] = chr->chr_event;
449 /* Fix up the real driver with mux routines */
450 if (d->mux_cnt == 0) {
451 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
452 mux_chr_event, chr);
453 }
454 chr->focus = d->mux_cnt;
455 d->mux_cnt++;
456 }
457
458 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
459 {
460 CharDriverState *chr;
461 MuxDriver *d;
462
463 chr = qemu_mallocz(sizeof(CharDriverState));
464 d = qemu_mallocz(sizeof(MuxDriver));
465
466 chr->opaque = d;
467 d->drv = drv;
468 chr->focus = -1;
469 chr->chr_write = mux_chr_write;
470 chr->chr_update_read_handler = mux_chr_update_read_handler;
471 chr->chr_accept_input = mux_chr_accept_input;
472 return chr;
473 }
474
475
476 #ifdef _WIN32
477 int send_all(int fd, const void *buf, int len1)
478 {
479 int ret, len;
480
481 len = len1;
482 while (len > 0) {
483 ret = send(fd, buf, len, 0);
484 if (ret < 0) {
485 errno = WSAGetLastError();
486 if (errno != WSAEWOULDBLOCK) {
487 return -1;
488 }
489 } else if (ret == 0) {
490 break;
491 } else {
492 buf += ret;
493 len -= ret;
494 }
495 }
496 return len1 - len;
497 }
498
499 #else
500
501 static int unix_write(int fd, const uint8_t *buf, int len1)
502 {
503 int ret, len;
504
505 len = len1;
506 while (len > 0) {
507 ret = write(fd, buf, len);
508 if (ret < 0) {
509 if (errno != EINTR && errno != EAGAIN)
510 return -1;
511 } else if (ret == 0) {
512 break;
513 } else {
514 buf += ret;
515 len -= ret;
516 }
517 }
518 return len1 - len;
519 }
520
521 int send_all(int fd, const void *buf, int len1)
522 {
523 return unix_write(fd, buf, len1);
524 }
525 #endif /* !_WIN32 */
526
527 #ifndef _WIN32
528
529 typedef struct {
530 int fd_in, fd_out;
531 int max_size;
532 } FDCharDriver;
533
534 #define STDIO_MAX_CLIENTS 1
535 static int stdio_nb_clients = 0;
536
537 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
538 {
539 FDCharDriver *s = chr->opaque;
540 return send_all(s->fd_out, buf, len);
541 }
542
543 static int fd_chr_read_poll(void *opaque)
544 {
545 CharDriverState *chr = opaque;
546 FDCharDriver *s = chr->opaque;
547
548 s->max_size = qemu_chr_can_read(chr);
549 return s->max_size;
550 }
551
552 static void fd_chr_read(void *opaque)
553 {
554 CharDriverState *chr = opaque;
555 FDCharDriver *s = chr->opaque;
556 int size, len;
557 uint8_t buf[1024];
558
559 len = sizeof(buf);
560 if (len > s->max_size)
561 len = s->max_size;
562 if (len == 0)
563 return;
564 size = read(s->fd_in, buf, len);
565 if (size == 0) {
566 /* FD has been closed. Remove it from the active list. */
567 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
568 return;
569 }
570 if (size > 0) {
571 qemu_chr_read(chr, buf, size);
572 }
573 }
574
575 static void fd_chr_update_read_handler(CharDriverState *chr)
576 {
577 FDCharDriver *s = chr->opaque;
578
579 if (s->fd_in >= 0) {
580 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
581 } else {
582 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
583 fd_chr_read, NULL, chr);
584 }
585 }
586 }
587
588 static void fd_chr_close(struct CharDriverState *chr)
589 {
590 FDCharDriver *s = chr->opaque;
591
592 if (s->fd_in >= 0) {
593 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
594 } else {
595 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
596 }
597 }
598
599 qemu_free(s);
600 }
601
602 /* open a character device to a unix fd */
603 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
604 {
605 CharDriverState *chr;
606 FDCharDriver *s;
607
608 chr = qemu_mallocz(sizeof(CharDriverState));
609 s = qemu_mallocz(sizeof(FDCharDriver));
610 s->fd_in = fd_in;
611 s->fd_out = fd_out;
612 chr->opaque = s;
613 chr->chr_write = fd_chr_write;
614 chr->chr_update_read_handler = fd_chr_update_read_handler;
615 chr->chr_close = fd_chr_close;
616
617 qemu_chr_reset(chr);
618
619 return chr;
620 }
621
622 static CharDriverState *qemu_chr_open_file_out(const char *file_out)
623 {
624 int fd_out;
625
626 TFR(fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
627 if (fd_out < 0)
628 return NULL;
629 return qemu_chr_open_fd(-1, fd_out);
630 }
631
632 static CharDriverState *qemu_chr_open_pipe(const char *filename)
633 {
634 int fd_in, fd_out;
635 char filename_in[256], filename_out[256];
636
637 snprintf(filename_in, 256, "%s.in", filename);
638 snprintf(filename_out, 256, "%s.out", filename);
639 TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
640 TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
641 if (fd_in < 0 || fd_out < 0) {
642 if (fd_in >= 0)
643 close(fd_in);
644 if (fd_out >= 0)
645 close(fd_out);
646 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
647 if (fd_in < 0)
648 return NULL;
649 }
650 return qemu_chr_open_fd(fd_in, fd_out);
651 }
652
653
654 /* for STDIO, we handle the case where several clients use it
655 (nographic mode) */
656
657 #define TERM_FIFO_MAX_SIZE 1
658
659 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
660 static int term_fifo_size;
661
662 static int stdio_read_poll(void *opaque)
663 {
664 CharDriverState *chr = opaque;
665
666 /* try to flush the queue if needed */
667 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
668 qemu_chr_read(chr, term_fifo, 1);
669 term_fifo_size = 0;
670 }
671 /* see if we can absorb more chars */
672 if (term_fifo_size == 0)
673 return 1;
674 else
675 return 0;
676 }
677
678 static void stdio_read(void *opaque)
679 {
680 int size;
681 uint8_t buf[1];
682 CharDriverState *chr = opaque;
683
684 size = read(0, buf, 1);
685 if (size == 0) {
686 /* stdin has been closed. Remove it from the active list. */
687 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
688 return;
689 }
690 if (size > 0) {
691 if (qemu_chr_can_read(chr) > 0) {
692 qemu_chr_read(chr, buf, 1);
693 } else if (term_fifo_size == 0) {
694 term_fifo[term_fifo_size++] = buf[0];
695 }
696 }
697 }
698
699 /* init terminal so that we can grab keys */
700 static struct termios oldtty;
701 static int old_fd0_flags;
702 static int term_atexit_done;
703
704 static void term_exit(void)
705 {
706 tcsetattr (0, TCSANOW, &oldtty);
707 fcntl(0, F_SETFL, old_fd0_flags);
708 }
709
710 static void term_init(void)
711 {
712 struct termios tty;
713
714 tcgetattr (0, &tty);
715 oldtty = tty;
716 old_fd0_flags = fcntl(0, F_GETFL);
717
718 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
719 |INLCR|IGNCR|ICRNL|IXON);
720 tty.c_oflag |= OPOST;
721 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
722 /* if graphical mode, we allow Ctrl-C handling */
723 if (display_type == DT_NOGRAPHIC)
724 tty.c_lflag &= ~ISIG;
725 tty.c_cflag &= ~(CSIZE|PARENB);
726 tty.c_cflag |= CS8;
727 tty.c_cc[VMIN] = 1;
728 tty.c_cc[VTIME] = 0;
729
730 tcsetattr (0, TCSANOW, &tty);
731
732 if (!term_atexit_done++)
733 atexit(term_exit);
734
735 fcntl(0, F_SETFL, O_NONBLOCK);
736 }
737
738 static void qemu_chr_close_stdio(struct CharDriverState *chr)
739 {
740 term_exit();
741 stdio_nb_clients--;
742 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
743 fd_chr_close(chr);
744 }
745
746 static CharDriverState *qemu_chr_open_stdio(void)
747 {
748 CharDriverState *chr;
749
750 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
751 return NULL;
752 chr = qemu_chr_open_fd(0, 1);
753 chr->chr_close = qemu_chr_close_stdio;
754 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
755 stdio_nb_clients++;
756 term_init();
757
758 return chr;
759 }
760
761 #ifdef __sun__
762 /* Once Solaris has openpty(), this is going to be removed. */
763 static int openpty(int *amaster, int *aslave, char *name,
764 struct termios *termp, struct winsize *winp)
765 {
766 const char *slave;
767 int mfd = -1, sfd = -1;
768
769 *amaster = *aslave = -1;
770
771 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
772 if (mfd < 0)
773 goto err;
774
775 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
776 goto err;
777
778 if ((slave = ptsname(mfd)) == NULL)
779 goto err;
780
781 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
782 goto err;
783
784 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
785 (termp != NULL && tcgetattr(sfd, termp) < 0))
786 goto err;
787
788 if (amaster)
789 *amaster = mfd;
790 if (aslave)
791 *aslave = sfd;
792 if (winp)
793 ioctl(sfd, TIOCSWINSZ, winp);
794
795 return 0;
796
797 err:
798 if (sfd != -1)
799 close(sfd);
800 close(mfd);
801 return -1;
802 }
803
804 static void cfmakeraw (struct termios *termios_p)
805 {
806 termios_p->c_iflag &=
807 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
808 termios_p->c_oflag &= ~OPOST;
809 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
810 termios_p->c_cflag &= ~(CSIZE|PARENB);
811 termios_p->c_cflag |= CS8;
812
813 termios_p->c_cc[VMIN] = 0;
814 termios_p->c_cc[VTIME] = 0;
815 }
816 #endif
817
818 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
819 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
820
821 typedef struct {
822 int fd;
823 int connected;
824 int polling;
825 int read_bytes;
826 QEMUTimer *timer;
827 } PtyCharDriver;
828
829 static void pty_chr_update_read_handler(CharDriverState *chr);
830 static void pty_chr_state(CharDriverState *chr, int connected);
831
832 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
833 {
834 PtyCharDriver *s = chr->opaque;
835
836 if (!s->connected) {
837 /* guest sends data, check for (re-)connect */
838 pty_chr_update_read_handler(chr);
839 return 0;
840 }
841 return send_all(s->fd, buf, len);
842 }
843
844 static int pty_chr_read_poll(void *opaque)
845 {
846 CharDriverState *chr = opaque;
847 PtyCharDriver *s = chr->opaque;
848
849 s->read_bytes = qemu_chr_can_read(chr);
850 return s->read_bytes;
851 }
852
853 static void pty_chr_read(void *opaque)
854 {
855 CharDriverState *chr = opaque;
856 PtyCharDriver *s = chr->opaque;
857 int size, len;
858 uint8_t buf[1024];
859
860 len = sizeof(buf);
861 if (len > s->read_bytes)
862 len = s->read_bytes;
863 if (len == 0)
864 return;
865 size = read(s->fd, buf, len);
866 if ((size == -1 && errno == EIO) ||
867 (size == 0)) {
868 pty_chr_state(chr, 0);
869 return;
870 }
871 if (size > 0) {
872 pty_chr_state(chr, 1);
873 qemu_chr_read(chr, buf, size);
874 }
875 }
876
877 static void pty_chr_update_read_handler(CharDriverState *chr)
878 {
879 PtyCharDriver *s = chr->opaque;
880
881 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
882 pty_chr_read, NULL, chr);
883 s->polling = 1;
884 /*
885 * Short timeout here: just need wait long enougth that qemu makes
886 * it through the poll loop once. When reconnected we want a
887 * short timeout so we notice it almost instantly. Otherwise
888 * read() gives us -EIO instantly, making pty_chr_state() reset the
889 * timeout to the normal (much longer) poll interval before the
890 * timer triggers.
891 */
892 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
893 }
894
895 static void pty_chr_state(CharDriverState *chr, int connected)
896 {
897 PtyCharDriver *s = chr->opaque;
898
899 if (!connected) {
900 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
901 s->connected = 0;
902 s->polling = 0;
903 /* (re-)connect poll interval for idle guests: once per second.
904 * We check more frequently in case the guests sends data to
905 * the virtual device linked to our pty. */
906 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
907 } else {
908 if (!s->connected)
909 qemu_chr_reset(chr);
910 s->connected = 1;
911 }
912 }
913
914 static void pty_chr_timer(void *opaque)
915 {
916 struct CharDriverState *chr = opaque;
917 PtyCharDriver *s = chr->opaque;
918
919 if (s->connected)
920 return;
921 if (s->polling) {
922 /* If we arrive here without polling being cleared due
923 * read returning -EIO, then we are (re-)connected */
924 pty_chr_state(chr, 1);
925 return;
926 }
927
928 /* Next poll ... */
929 pty_chr_update_read_handler(chr);
930 }
931
932 static void pty_chr_close(struct CharDriverState *chr)
933 {
934 PtyCharDriver *s = chr->opaque;
935
936 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
937 close(s->fd);
938 qemu_del_timer(s->timer);
939 qemu_free_timer(s->timer);
940 qemu_free(s);
941 }
942
943 static CharDriverState *qemu_chr_open_pty(void)
944 {
945 CharDriverState *chr;
946 PtyCharDriver *s;
947 struct termios tty;
948 int slave_fd, len;
949 #if defined(__OpenBSD__) || defined(__DragonFly__)
950 char pty_name[PATH_MAX];
951 #define q_ptsname(x) pty_name
952 #else
953 char *pty_name = NULL;
954 #define q_ptsname(x) ptsname(x)
955 #endif
956
957 chr = qemu_mallocz(sizeof(CharDriverState));
958 s = qemu_mallocz(sizeof(PtyCharDriver));
959
960 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
961 return NULL;
962 }
963
964 /* Set raw attributes on the pty. */
965 tcgetattr(slave_fd, &tty);
966 cfmakeraw(&tty);
967 tcsetattr(slave_fd, TCSAFLUSH, &tty);
968 close(slave_fd);
969
970 len = strlen(q_ptsname(s->fd)) + 5;
971 chr->filename = qemu_malloc(len);
972 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
973 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
974
975 chr->opaque = s;
976 chr->chr_write = pty_chr_write;
977 chr->chr_update_read_handler = pty_chr_update_read_handler;
978 chr->chr_close = pty_chr_close;
979
980 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
981
982 return chr;
983 }
984
985 static void tty_serial_init(int fd, int speed,
986 int parity, int data_bits, int stop_bits)
987 {
988 struct termios tty;
989 speed_t spd;
990
991 #if 0
992 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
993 speed, parity, data_bits, stop_bits);
994 #endif
995 tcgetattr (fd, &tty);
996
997 #define MARGIN 1.1
998 if (speed <= 50 * MARGIN)
999 spd = B50;
1000 else if (speed <= 75 * MARGIN)
1001 spd = B75;
1002 else if (speed <= 300 * MARGIN)
1003 spd = B300;
1004 else if (speed <= 600 * MARGIN)
1005 spd = B600;
1006 else if (speed <= 1200 * MARGIN)
1007 spd = B1200;
1008 else if (speed <= 2400 * MARGIN)
1009 spd = B2400;
1010 else if (speed <= 4800 * MARGIN)
1011 spd = B4800;
1012 else if (speed <= 9600 * MARGIN)
1013 spd = B9600;
1014 else if (speed <= 19200 * MARGIN)
1015 spd = B19200;
1016 else if (speed <= 38400 * MARGIN)
1017 spd = B38400;
1018 else if (speed <= 57600 * MARGIN)
1019 spd = B57600;
1020 else if (speed <= 115200 * MARGIN)
1021 spd = B115200;
1022 else
1023 spd = B115200;
1024
1025 cfsetispeed(&tty, spd);
1026 cfsetospeed(&tty, spd);
1027
1028 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1029 |INLCR|IGNCR|ICRNL|IXON);
1030 tty.c_oflag |= OPOST;
1031 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1032 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1033 switch(data_bits) {
1034 default:
1035 case 8:
1036 tty.c_cflag |= CS8;
1037 break;
1038 case 7:
1039 tty.c_cflag |= CS7;
1040 break;
1041 case 6:
1042 tty.c_cflag |= CS6;
1043 break;
1044 case 5:
1045 tty.c_cflag |= CS5;
1046 break;
1047 }
1048 switch(parity) {
1049 default:
1050 case 'N':
1051 break;
1052 case 'E':
1053 tty.c_cflag |= PARENB;
1054 break;
1055 case 'O':
1056 tty.c_cflag |= PARENB | PARODD;
1057 break;
1058 }
1059 if (stop_bits == 2)
1060 tty.c_cflag |= CSTOPB;
1061
1062 tcsetattr (fd, TCSANOW, &tty);
1063 }
1064
1065 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1066 {
1067 FDCharDriver *s = chr->opaque;
1068
1069 switch(cmd) {
1070 case CHR_IOCTL_SERIAL_SET_PARAMS:
1071 {
1072 QEMUSerialSetParams *ssp = arg;
1073 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1074 ssp->data_bits, ssp->stop_bits);
1075 }
1076 break;
1077 case CHR_IOCTL_SERIAL_SET_BREAK:
1078 {
1079 int enable = *(int *)arg;
1080 if (enable)
1081 tcsendbreak(s->fd_in, 1);
1082 }
1083 break;
1084 case CHR_IOCTL_SERIAL_GET_TIOCM:
1085 {
1086 int sarg = 0;
1087 int *targ = (int *)arg;
1088 ioctl(s->fd_in, TIOCMGET, &sarg);
1089 *targ = 0;
1090 if (sarg & TIOCM_CTS)
1091 *targ |= CHR_TIOCM_CTS;
1092 if (sarg & TIOCM_CAR)
1093 *targ |= CHR_TIOCM_CAR;
1094 if (sarg & TIOCM_DSR)
1095 *targ |= CHR_TIOCM_DSR;
1096 if (sarg & TIOCM_RI)
1097 *targ |= CHR_TIOCM_RI;
1098 if (sarg & TIOCM_DTR)
1099 *targ |= CHR_TIOCM_DTR;
1100 if (sarg & TIOCM_RTS)
1101 *targ |= CHR_TIOCM_RTS;
1102 }
1103 break;
1104 case CHR_IOCTL_SERIAL_SET_TIOCM:
1105 {
1106 int sarg = *(int *)arg;
1107 int targ = 0;
1108 ioctl(s->fd_in, TIOCMGET, &targ);
1109 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1110 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1111 if (sarg & CHR_TIOCM_CTS)
1112 targ |= TIOCM_CTS;
1113 if (sarg & CHR_TIOCM_CAR)
1114 targ |= TIOCM_CAR;
1115 if (sarg & CHR_TIOCM_DSR)
1116 targ |= TIOCM_DSR;
1117 if (sarg & CHR_TIOCM_RI)
1118 targ |= TIOCM_RI;
1119 if (sarg & CHR_TIOCM_DTR)
1120 targ |= TIOCM_DTR;
1121 if (sarg & CHR_TIOCM_RTS)
1122 targ |= TIOCM_RTS;
1123 ioctl(s->fd_in, TIOCMSET, &targ);
1124 }
1125 break;
1126 default:
1127 return -ENOTSUP;
1128 }
1129 return 0;
1130 }
1131
1132 static CharDriverState *qemu_chr_open_tty(const char *filename)
1133 {
1134 CharDriverState *chr;
1135 int fd;
1136
1137 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1138 tty_serial_init(fd, 115200, 'N', 8, 1);
1139 chr = qemu_chr_open_fd(fd, fd);
1140 if (!chr) {
1141 close(fd);
1142 return NULL;
1143 }
1144 chr->chr_ioctl = tty_serial_ioctl;
1145 qemu_chr_reset(chr);
1146 return chr;
1147 }
1148 #else /* ! __linux__ && ! __sun__ */
1149 static CharDriverState *qemu_chr_open_pty(void)
1150 {
1151 return NULL;
1152 }
1153 #endif /* __linux__ || __sun__ */
1154
1155 #if defined(__linux__)
1156 typedef struct {
1157 int fd;
1158 int mode;
1159 } ParallelCharDriver;
1160
1161 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1162 {
1163 if (s->mode != mode) {
1164 int m = mode;
1165 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1166 return 0;
1167 s->mode = mode;
1168 }
1169 return 1;
1170 }
1171
1172 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1173 {
1174 ParallelCharDriver *drv = chr->opaque;
1175 int fd = drv->fd;
1176 uint8_t b;
1177
1178 switch(cmd) {
1179 case CHR_IOCTL_PP_READ_DATA:
1180 if (ioctl(fd, PPRDATA, &b) < 0)
1181 return -ENOTSUP;
1182 *(uint8_t *)arg = b;
1183 break;
1184 case CHR_IOCTL_PP_WRITE_DATA:
1185 b = *(uint8_t *)arg;
1186 if (ioctl(fd, PPWDATA, &b) < 0)
1187 return -ENOTSUP;
1188 break;
1189 case CHR_IOCTL_PP_READ_CONTROL:
1190 if (ioctl(fd, PPRCONTROL, &b) < 0)
1191 return -ENOTSUP;
1192 /* Linux gives only the lowest bits, and no way to know data
1193 direction! For better compatibility set the fixed upper
1194 bits. */
1195 *(uint8_t *)arg = b | 0xc0;
1196 break;
1197 case CHR_IOCTL_PP_WRITE_CONTROL:
1198 b = *(uint8_t *)arg;
1199 if (ioctl(fd, PPWCONTROL, &b) < 0)
1200 return -ENOTSUP;
1201 break;
1202 case CHR_IOCTL_PP_READ_STATUS:
1203 if (ioctl(fd, PPRSTATUS, &b) < 0)
1204 return -ENOTSUP;
1205 *(uint8_t *)arg = b;
1206 break;
1207 case CHR_IOCTL_PP_DATA_DIR:
1208 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1209 return -ENOTSUP;
1210 break;
1211 case CHR_IOCTL_PP_EPP_READ_ADDR:
1212 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1213 struct ParallelIOArg *parg = arg;
1214 int n = read(fd, parg->buffer, parg->count);
1215 if (n != parg->count) {
1216 return -EIO;
1217 }
1218 }
1219 break;
1220 case CHR_IOCTL_PP_EPP_READ:
1221 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1222 struct ParallelIOArg *parg = arg;
1223 int n = read(fd, parg->buffer, parg->count);
1224 if (n != parg->count) {
1225 return -EIO;
1226 }
1227 }
1228 break;
1229 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1230 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1231 struct ParallelIOArg *parg = arg;
1232 int n = write(fd, parg->buffer, parg->count);
1233 if (n != parg->count) {
1234 return -EIO;
1235 }
1236 }
1237 break;
1238 case CHR_IOCTL_PP_EPP_WRITE:
1239 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1240 struct ParallelIOArg *parg = arg;
1241 int n = write(fd, parg->buffer, parg->count);
1242 if (n != parg->count) {
1243 return -EIO;
1244 }
1245 }
1246 break;
1247 default:
1248 return -ENOTSUP;
1249 }
1250 return 0;
1251 }
1252
1253 static void pp_close(CharDriverState *chr)
1254 {
1255 ParallelCharDriver *drv = chr->opaque;
1256 int fd = drv->fd;
1257
1258 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1259 ioctl(fd, PPRELEASE);
1260 close(fd);
1261 qemu_free(drv);
1262 }
1263
1264 static CharDriverState *qemu_chr_open_pp(const char *filename)
1265 {
1266 CharDriverState *chr;
1267 ParallelCharDriver *drv;
1268 int fd;
1269
1270 TFR(fd = open(filename, O_RDWR));
1271 if (fd < 0)
1272 return NULL;
1273
1274 if (ioctl(fd, PPCLAIM) < 0) {
1275 close(fd);
1276 return NULL;
1277 }
1278
1279 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1280 drv->fd = fd;
1281 drv->mode = IEEE1284_MODE_COMPAT;
1282
1283 chr = qemu_mallocz(sizeof(CharDriverState));
1284 chr->chr_write = null_chr_write;
1285 chr->chr_ioctl = pp_ioctl;
1286 chr->chr_close = pp_close;
1287 chr->opaque = drv;
1288
1289 qemu_chr_reset(chr);
1290
1291 return chr;
1292 }
1293 #endif /* __linux__ */
1294
1295 #if defined(__FreeBSD__) || defined(__DragonFly__)
1296 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1297 {
1298 int fd = (int)chr->opaque;
1299 uint8_t b;
1300
1301 switch(cmd) {
1302 case CHR_IOCTL_PP_READ_DATA:
1303 if (ioctl(fd, PPIGDATA, &b) < 0)
1304 return -ENOTSUP;
1305 *(uint8_t *)arg = b;
1306 break;
1307 case CHR_IOCTL_PP_WRITE_DATA:
1308 b = *(uint8_t *)arg;
1309 if (ioctl(fd, PPISDATA, &b) < 0)
1310 return -ENOTSUP;
1311 break;
1312 case CHR_IOCTL_PP_READ_CONTROL:
1313 if (ioctl(fd, PPIGCTRL, &b) < 0)
1314 return -ENOTSUP;
1315 *(uint8_t *)arg = b;
1316 break;
1317 case CHR_IOCTL_PP_WRITE_CONTROL:
1318 b = *(uint8_t *)arg;
1319 if (ioctl(fd, PPISCTRL, &b) < 0)
1320 return -ENOTSUP;
1321 break;
1322 case CHR_IOCTL_PP_READ_STATUS:
1323 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1324 return -ENOTSUP;
1325 *(uint8_t *)arg = b;
1326 break;
1327 default:
1328 return -ENOTSUP;
1329 }
1330 return 0;
1331 }
1332
1333 static CharDriverState *qemu_chr_open_pp(const char *filename)
1334 {
1335 CharDriverState *chr;
1336 int fd;
1337
1338 fd = open(filename, O_RDWR);
1339 if (fd < 0)
1340 return NULL;
1341
1342 chr = qemu_mallocz(sizeof(CharDriverState));
1343 chr->opaque = (void *)fd;
1344 chr->chr_write = null_chr_write;
1345 chr->chr_ioctl = pp_ioctl;
1346 return chr;
1347 }
1348 #endif
1349
1350 #else /* _WIN32 */
1351
1352 typedef struct {
1353 int max_size;
1354 HANDLE hcom, hrecv, hsend;
1355 OVERLAPPED orecv, osend;
1356 BOOL fpipe;
1357 DWORD len;
1358 } WinCharState;
1359
1360 #define NSENDBUF 2048
1361 #define NRECVBUF 2048
1362 #define MAXCONNECT 1
1363 #define NTIMEOUT 5000
1364
1365 static int win_chr_poll(void *opaque);
1366 static int win_chr_pipe_poll(void *opaque);
1367
1368 static void win_chr_close(CharDriverState *chr)
1369 {
1370 WinCharState *s = chr->opaque;
1371
1372 if (s->hsend) {
1373 CloseHandle(s->hsend);
1374 s->hsend = NULL;
1375 }
1376 if (s->hrecv) {
1377 CloseHandle(s->hrecv);
1378 s->hrecv = NULL;
1379 }
1380 if (s->hcom) {
1381 CloseHandle(s->hcom);
1382 s->hcom = NULL;
1383 }
1384 if (s->fpipe)
1385 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1386 else
1387 qemu_del_polling_cb(win_chr_poll, chr);
1388 }
1389
1390 static int win_chr_init(CharDriverState *chr, const char *filename)
1391 {
1392 WinCharState *s = chr->opaque;
1393 COMMCONFIG comcfg;
1394 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1395 COMSTAT comstat;
1396 DWORD size;
1397 DWORD err;
1398
1399 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1400 if (!s->hsend) {
1401 fprintf(stderr, "Failed CreateEvent\n");
1402 goto fail;
1403 }
1404 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1405 if (!s->hrecv) {
1406 fprintf(stderr, "Failed CreateEvent\n");
1407 goto fail;
1408 }
1409
1410 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1411 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1412 if (s->hcom == INVALID_HANDLE_VALUE) {
1413 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1414 s->hcom = NULL;
1415 goto fail;
1416 }
1417
1418 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1419 fprintf(stderr, "Failed SetupComm\n");
1420 goto fail;
1421 }
1422
1423 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1424 size = sizeof(COMMCONFIG);
1425 GetDefaultCommConfig(filename, &comcfg, &size);
1426 comcfg.dcb.DCBlength = sizeof(DCB);
1427 CommConfigDialog(filename, NULL, &comcfg);
1428
1429 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1430 fprintf(stderr, "Failed SetCommState\n");
1431 goto fail;
1432 }
1433
1434 if (!SetCommMask(s->hcom, EV_ERR)) {
1435 fprintf(stderr, "Failed SetCommMask\n");
1436 goto fail;
1437 }
1438
1439 cto.ReadIntervalTimeout = MAXDWORD;
1440 if (!SetCommTimeouts(s->hcom, &cto)) {
1441 fprintf(stderr, "Failed SetCommTimeouts\n");
1442 goto fail;
1443 }
1444
1445 if (!ClearCommError(s->hcom, &err, &comstat)) {
1446 fprintf(stderr, "Failed ClearCommError\n");
1447 goto fail;
1448 }
1449 qemu_add_polling_cb(win_chr_poll, chr);
1450 return 0;
1451
1452 fail:
1453 win_chr_close(chr);
1454 return -1;
1455 }
1456
1457 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1458 {
1459 WinCharState *s = chr->opaque;
1460 DWORD len, ret, size, err;
1461
1462 len = len1;
1463 ZeroMemory(&s->osend, sizeof(s->osend));
1464 s->osend.hEvent = s->hsend;
1465 while (len > 0) {
1466 if (s->hsend)
1467 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1468 else
1469 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1470 if (!ret) {
1471 err = GetLastError();
1472 if (err == ERROR_IO_PENDING) {
1473 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1474 if (ret) {
1475 buf += size;
1476 len -= size;
1477 } else {
1478 break;
1479 }
1480 } else {
1481 break;
1482 }
1483 } else {
1484 buf += size;
1485 len -= size;
1486 }
1487 }
1488 return len1 - len;
1489 }
1490
1491 static int win_chr_read_poll(CharDriverState *chr)
1492 {
1493 WinCharState *s = chr->opaque;
1494
1495 s->max_size = qemu_chr_can_read(chr);
1496 return s->max_size;
1497 }
1498
1499 static void win_chr_readfile(CharDriverState *chr)
1500 {
1501 WinCharState *s = chr->opaque;
1502 int ret, err;
1503 uint8_t buf[1024];
1504 DWORD size;
1505
1506 ZeroMemory(&s->orecv, sizeof(s->orecv));
1507 s->orecv.hEvent = s->hrecv;
1508 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1509 if (!ret) {
1510 err = GetLastError();
1511 if (err == ERROR_IO_PENDING) {
1512 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1513 }
1514 }
1515
1516 if (size > 0) {
1517 qemu_chr_read(chr, buf, size);
1518 }
1519 }
1520
1521 static void win_chr_read(CharDriverState *chr)
1522 {
1523 WinCharState *s = chr->opaque;
1524
1525 if (s->len > s->max_size)
1526 s->len = s->max_size;
1527 if (s->len == 0)
1528 return;
1529
1530 win_chr_readfile(chr);
1531 }
1532
1533 static int win_chr_poll(void *opaque)
1534 {
1535 CharDriverState *chr = opaque;
1536 WinCharState *s = chr->opaque;
1537 COMSTAT status;
1538 DWORD comerr;
1539
1540 ClearCommError(s->hcom, &comerr, &status);
1541 if (status.cbInQue > 0) {
1542 s->len = status.cbInQue;
1543 win_chr_read_poll(chr);
1544 win_chr_read(chr);
1545 return 1;
1546 }
1547 return 0;
1548 }
1549
1550 static CharDriverState *qemu_chr_open_win(const char *filename)
1551 {
1552 CharDriverState *chr;
1553 WinCharState *s;
1554
1555 chr = qemu_mallocz(sizeof(CharDriverState));
1556 s = qemu_mallocz(sizeof(WinCharState));
1557 chr->opaque = s;
1558 chr->chr_write = win_chr_write;
1559 chr->chr_close = win_chr_close;
1560
1561 if (win_chr_init(chr, filename) < 0) {
1562 free(s);
1563 free(chr);
1564 return NULL;
1565 }
1566 qemu_chr_reset(chr);
1567 return chr;
1568 }
1569
1570 static int win_chr_pipe_poll(void *opaque)
1571 {
1572 CharDriverState *chr = opaque;
1573 WinCharState *s = chr->opaque;
1574 DWORD size;
1575
1576 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1577 if (size > 0) {
1578 s->len = size;
1579 win_chr_read_poll(chr);
1580 win_chr_read(chr);
1581 return 1;
1582 }
1583 return 0;
1584 }
1585
1586 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1587 {
1588 WinCharState *s = chr->opaque;
1589 OVERLAPPED ov;
1590 int ret;
1591 DWORD size;
1592 char openname[256];
1593
1594 s->fpipe = TRUE;
1595
1596 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1597 if (!s->hsend) {
1598 fprintf(stderr, "Failed CreateEvent\n");
1599 goto fail;
1600 }
1601 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1602 if (!s->hrecv) {
1603 fprintf(stderr, "Failed CreateEvent\n");
1604 goto fail;
1605 }
1606
1607 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1608 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1609 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1610 PIPE_WAIT,
1611 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1612 if (s->hcom == INVALID_HANDLE_VALUE) {
1613 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1614 s->hcom = NULL;
1615 goto fail;
1616 }
1617
1618 ZeroMemory(&ov, sizeof(ov));
1619 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1620 ret = ConnectNamedPipe(s->hcom, &ov);
1621 if (ret) {
1622 fprintf(stderr, "Failed ConnectNamedPipe\n");
1623 goto fail;
1624 }
1625
1626 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1627 if (!ret) {
1628 fprintf(stderr, "Failed GetOverlappedResult\n");
1629 if (ov.hEvent) {
1630 CloseHandle(ov.hEvent);
1631 ov.hEvent = NULL;
1632 }
1633 goto fail;
1634 }
1635
1636 if (ov.hEvent) {
1637 CloseHandle(ov.hEvent);
1638 ov.hEvent = NULL;
1639 }
1640 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1641 return 0;
1642
1643 fail:
1644 win_chr_close(chr);
1645 return -1;
1646 }
1647
1648
1649 static CharDriverState *qemu_chr_open_win_pipe(const char *filename)
1650 {
1651 CharDriverState *chr;
1652 WinCharState *s;
1653
1654 chr = qemu_mallocz(sizeof(CharDriverState));
1655 s = qemu_mallocz(sizeof(WinCharState));
1656 chr->opaque = s;
1657 chr->chr_write = win_chr_write;
1658 chr->chr_close = win_chr_close;
1659
1660 if (win_chr_pipe_init(chr, filename) < 0) {
1661 free(s);
1662 free(chr);
1663 return NULL;
1664 }
1665 qemu_chr_reset(chr);
1666 return chr;
1667 }
1668
1669 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1670 {
1671 CharDriverState *chr;
1672 WinCharState *s;
1673
1674 chr = qemu_mallocz(sizeof(CharDriverState));
1675 s = qemu_mallocz(sizeof(WinCharState));
1676 s->hcom = fd_out;
1677 chr->opaque = s;
1678 chr->chr_write = win_chr_write;
1679 qemu_chr_reset(chr);
1680 return chr;
1681 }
1682
1683 static CharDriverState *qemu_chr_open_win_con(const char *filename)
1684 {
1685 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1686 }
1687
1688 static CharDriverState *qemu_chr_open_win_file_out(const char *file_out)
1689 {
1690 HANDLE fd_out;
1691
1692 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1693 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1694 if (fd_out == INVALID_HANDLE_VALUE)
1695 return NULL;
1696
1697 return qemu_chr_open_win_file(fd_out);
1698 }
1699 #endif /* !_WIN32 */
1700
1701 /***********************************************************/
1702 /* UDP Net console */
1703
1704 typedef struct {
1705 int fd;
1706 struct sockaddr_in daddr;
1707 uint8_t buf[1024];
1708 int bufcnt;
1709 int bufptr;
1710 int max_size;
1711 } NetCharDriver;
1712
1713 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1714 {
1715 NetCharDriver *s = chr->opaque;
1716
1717 return sendto(s->fd, (const void *)buf, len, 0,
1718 (struct sockaddr *)&s->daddr, sizeof(struct sockaddr_in));
1719 }
1720
1721 static int udp_chr_read_poll(void *opaque)
1722 {
1723 CharDriverState *chr = opaque;
1724 NetCharDriver *s = chr->opaque;
1725
1726 s->max_size = qemu_chr_can_read(chr);
1727
1728 /* If there were any stray characters in the queue process them
1729 * first
1730 */
1731 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1732 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1733 s->bufptr++;
1734 s->max_size = qemu_chr_can_read(chr);
1735 }
1736 return s->max_size;
1737 }
1738
1739 static void udp_chr_read(void *opaque)
1740 {
1741 CharDriverState *chr = opaque;
1742 NetCharDriver *s = chr->opaque;
1743
1744 if (s->max_size == 0)
1745 return;
1746 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1747 s->bufptr = s->bufcnt;
1748 if (s->bufcnt <= 0)
1749 return;
1750
1751 s->bufptr = 0;
1752 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1753 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1754 s->bufptr++;
1755 s->max_size = qemu_chr_can_read(chr);
1756 }
1757 }
1758
1759 static void udp_chr_update_read_handler(CharDriverState *chr)
1760 {
1761 NetCharDriver *s = chr->opaque;
1762
1763 if (s->fd >= 0) {
1764 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1765 udp_chr_read, NULL, chr);
1766 }
1767 }
1768
1769 static void udp_chr_close(CharDriverState *chr)
1770 {
1771 NetCharDriver *s = chr->opaque;
1772 if (s->fd >= 0) {
1773 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1774 closesocket(s->fd);
1775 }
1776 qemu_free(s);
1777 }
1778
1779 static CharDriverState *qemu_chr_open_udp(const char *def)
1780 {
1781 CharDriverState *chr = NULL;
1782 NetCharDriver *s = NULL;
1783 int fd = -1;
1784 struct sockaddr_in saddr;
1785
1786 chr = qemu_mallocz(sizeof(CharDriverState));
1787 s = qemu_mallocz(sizeof(NetCharDriver));
1788
1789 fd = socket(PF_INET, SOCK_DGRAM, 0);
1790 if (fd < 0) {
1791 perror("socket(PF_INET, SOCK_DGRAM)");
1792 goto return_err;
1793 }
1794
1795 if (parse_host_src_port(&s->daddr, &saddr, def) < 0) {
1796 printf("Could not parse: %s\n", def);
1797 goto return_err;
1798 }
1799
1800 if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
1801 {
1802 perror("bind");
1803 goto return_err;
1804 }
1805
1806 s->fd = fd;
1807 s->bufcnt = 0;
1808 s->bufptr = 0;
1809 chr->opaque = s;
1810 chr->chr_write = udp_chr_write;
1811 chr->chr_update_read_handler = udp_chr_update_read_handler;
1812 chr->chr_close = udp_chr_close;
1813 return chr;
1814
1815 return_err:
1816 if (chr)
1817 free(chr);
1818 if (s)
1819 free(s);
1820 if (fd >= 0)
1821 closesocket(fd);
1822 return NULL;
1823 }
1824
1825 /***********************************************************/
1826 /* TCP Net console */
1827
1828 typedef struct {
1829 int fd, listen_fd;
1830 int connected;
1831 int max_size;
1832 int do_telnetopt;
1833 int do_nodelay;
1834 int is_unix;
1835 } TCPCharDriver;
1836
1837 static void tcp_chr_accept(void *opaque);
1838
1839 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1840 {
1841 TCPCharDriver *s = chr->opaque;
1842 if (s->connected) {
1843 return send_all(s->fd, buf, len);
1844 } else {
1845 /* XXX: indicate an error ? */
1846 return len;
1847 }
1848 }
1849
1850 static int tcp_chr_read_poll(void *opaque)
1851 {
1852 CharDriverState *chr = opaque;
1853 TCPCharDriver *s = chr->opaque;
1854 if (!s->connected)
1855 return 0;
1856 s->max_size = qemu_chr_can_read(chr);
1857 return s->max_size;
1858 }
1859
1860 #define IAC 255
1861 #define IAC_BREAK 243
1862 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1863 TCPCharDriver *s,
1864 uint8_t *buf, int *size)
1865 {
1866 /* Handle any telnet client's basic IAC options to satisfy char by
1867 * char mode with no echo. All IAC options will be removed from
1868 * the buf and the do_telnetopt variable will be used to track the
1869 * state of the width of the IAC information.
1870 *
1871 * IAC commands come in sets of 3 bytes with the exception of the
1872 * "IAC BREAK" command and the double IAC.
1873 */
1874
1875 int i;
1876 int j = 0;
1877
1878 for (i = 0; i < *size; i++) {
1879 if (s->do_telnetopt > 1) {
1880 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1881 /* Double IAC means send an IAC */
1882 if (j != i)
1883 buf[j] = buf[i];
1884 j++;
1885 s->do_telnetopt = 1;
1886 } else {
1887 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1888 /* Handle IAC break commands by sending a serial break */
1889 qemu_chr_event(chr, CHR_EVENT_BREAK);
1890 s->do_telnetopt++;
1891 }
1892 s->do_telnetopt++;
1893 }
1894 if (s->do_telnetopt >= 4) {
1895 s->do_telnetopt = 1;
1896 }
1897 } else {
1898 if ((unsigned char)buf[i] == IAC) {
1899 s->do_telnetopt = 2;
1900 } else {
1901 if (j != i)
1902 buf[j] = buf[i];
1903 j++;
1904 }
1905 }
1906 }
1907 *size = j;
1908 }
1909
1910 static void tcp_chr_read(void *opaque)
1911 {
1912 CharDriverState *chr = opaque;
1913 TCPCharDriver *s = chr->opaque;
1914 uint8_t buf[1024];
1915 int len, size;
1916
1917 if (!s->connected || s->max_size <= 0)
1918 return;
1919 len = sizeof(buf);
1920 if (len > s->max_size)
1921 len = s->max_size;
1922 size = recv(s->fd, (void *)buf, len, 0);
1923 if (size == 0) {
1924 /* connection closed */
1925 s->connected = 0;
1926 if (s->listen_fd >= 0) {
1927 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
1928 }
1929 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1930 closesocket(s->fd);
1931 s->fd = -1;
1932 } else if (size > 0) {
1933 if (s->do_telnetopt)
1934 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
1935 if (size > 0)
1936 qemu_chr_read(chr, buf, size);
1937 }
1938 }
1939
1940 static void tcp_chr_connect(void *opaque)
1941 {
1942 CharDriverState *chr = opaque;
1943 TCPCharDriver *s = chr->opaque;
1944
1945 s->connected = 1;
1946 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
1947 tcp_chr_read, NULL, chr);
1948 qemu_chr_reset(chr);
1949 }
1950
1951 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
1952 static void tcp_chr_telnet_init(int fd)
1953 {
1954 char buf[3];
1955 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
1956 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
1957 send(fd, (char *)buf, 3, 0);
1958 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
1959 send(fd, (char *)buf, 3, 0);
1960 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
1961 send(fd, (char *)buf, 3, 0);
1962 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
1963 send(fd, (char *)buf, 3, 0);
1964 }
1965
1966 static void socket_set_nodelay(int fd)
1967 {
1968 int val = 1;
1969 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
1970 }
1971
1972 static void tcp_chr_accept(void *opaque)
1973 {
1974 CharDriverState *chr = opaque;
1975 TCPCharDriver *s = chr->opaque;
1976 struct sockaddr_in saddr;
1977 #ifndef _WIN32
1978 struct sockaddr_un uaddr;
1979 #endif
1980 struct sockaddr *addr;
1981 socklen_t len;
1982 int fd;
1983
1984 for(;;) {
1985 #ifndef _WIN32
1986 if (s->is_unix) {
1987 len = sizeof(uaddr);
1988 addr = (struct sockaddr *)&uaddr;
1989 } else
1990 #endif
1991 {
1992 len = sizeof(saddr);
1993 addr = (struct sockaddr *)&saddr;
1994 }
1995 fd = accept(s->listen_fd, addr, &len);
1996 if (fd < 0 && errno != EINTR) {
1997 return;
1998 } else if (fd >= 0) {
1999 if (s->do_telnetopt)
2000 tcp_chr_telnet_init(fd);
2001 break;
2002 }
2003 }
2004 socket_set_nonblock(fd);
2005 if (s->do_nodelay)
2006 socket_set_nodelay(fd);
2007 s->fd = fd;
2008 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2009 tcp_chr_connect(chr);
2010 }
2011
2012 static void tcp_chr_close(CharDriverState *chr)
2013 {
2014 TCPCharDriver *s = chr->opaque;
2015 if (s->fd >= 0) {
2016 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2017 closesocket(s->fd);
2018 }
2019 if (s->listen_fd >= 0) {
2020 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2021 closesocket(s->listen_fd);
2022 }
2023 qemu_free(s);
2024 }
2025
2026 static CharDriverState *qemu_chr_open_tcp(const char *host_str,
2027 int is_telnet,
2028 int is_unix)
2029 {
2030 CharDriverState *chr = NULL;
2031 TCPCharDriver *s = NULL;
2032 int fd = -1, offset = 0;
2033 int is_listen = 0;
2034 int is_waitconnect = 1;
2035 int do_nodelay = 0;
2036 const char *ptr;
2037
2038 ptr = host_str;
2039 while((ptr = strchr(ptr,','))) {
2040 ptr++;
2041 if (!strncmp(ptr,"server",6)) {
2042 is_listen = 1;
2043 } else if (!strncmp(ptr,"nowait",6)) {
2044 is_waitconnect = 0;
2045 } else if (!strncmp(ptr,"nodelay",6)) {
2046 do_nodelay = 1;
2047 } else if (!strncmp(ptr,"to=",3)) {
2048 /* nothing, inet_listen() parses this one */;
2049 } else if (!strncmp(ptr,"ipv4",4)) {
2050 /* nothing, inet_connect() and inet_listen() parse this one */;
2051 } else if (!strncmp(ptr,"ipv6",4)) {
2052 /* nothing, inet_connect() and inet_listen() parse this one */;
2053 } else {
2054 printf("Unknown option: %s\n", ptr);
2055 goto fail;
2056 }
2057 }
2058 if (!is_listen)
2059 is_waitconnect = 0;
2060
2061 chr = qemu_mallocz(sizeof(CharDriverState));
2062 s = qemu_mallocz(sizeof(TCPCharDriver));
2063
2064 if (is_listen) {
2065 chr->filename = qemu_malloc(256);
2066 if (is_unix) {
2067 pstrcpy(chr->filename, 256, "unix:");
2068 } else if (is_telnet) {
2069 pstrcpy(chr->filename, 256, "telnet:");
2070 } else {
2071 pstrcpy(chr->filename, 256, "tcp:");
2072 }
2073 offset = strlen(chr->filename);
2074 }
2075 if (is_unix) {
2076 if (is_listen) {
2077 fd = unix_listen(host_str, chr->filename + offset, 256 - offset);
2078 } else {
2079 fd = unix_connect(host_str);
2080 }
2081 } else {
2082 if (is_listen) {
2083 fd = inet_listen(host_str, chr->filename + offset, 256 - offset,
2084 SOCK_STREAM, 0);
2085 } else {
2086 fd = inet_connect(host_str, SOCK_STREAM);
2087 }
2088 }
2089 if (fd < 0)
2090 goto fail;
2091
2092 if (!is_waitconnect)
2093 socket_set_nonblock(fd);
2094
2095 s->connected = 0;
2096 s->fd = -1;
2097 s->listen_fd = -1;
2098 s->is_unix = is_unix;
2099 s->do_nodelay = do_nodelay && !is_unix;
2100
2101 chr->opaque = s;
2102 chr->chr_write = tcp_chr_write;
2103 chr->chr_close = tcp_chr_close;
2104
2105 if (is_listen) {
2106 s->listen_fd = fd;
2107 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2108 if (is_telnet)
2109 s->do_telnetopt = 1;
2110 } else {
2111 s->connected = 1;
2112 s->fd = fd;
2113 socket_set_nodelay(fd);
2114 tcp_chr_connect(chr);
2115 }
2116
2117 if (is_listen && is_waitconnect) {
2118 printf("QEMU waiting for connection on: %s\n",
2119 chr->filename ? chr->filename : host_str);
2120 tcp_chr_accept(chr);
2121 socket_set_nonblock(s->listen_fd);
2122 }
2123
2124 return chr;
2125 fail:
2126 if (fd >= 0)
2127 closesocket(fd);
2128 qemu_free(s);
2129 qemu_free(chr);
2130 return NULL;
2131 }
2132
2133 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2134 {
2135 const char *p;
2136 CharDriverState *chr;
2137
2138 if (!strcmp(filename, "vc")) {
2139 chr = text_console_init(0);
2140 } else
2141 if (strstart(filename, "vc:", &p)) {
2142 chr = text_console_init(p);
2143 } else
2144 if (!strcmp(filename, "null")) {
2145 chr = qemu_chr_open_null();
2146 } else
2147 if (strstart(filename, "tcp:", &p)) {
2148 chr = qemu_chr_open_tcp(p, 0, 0);
2149 } else
2150 if (strstart(filename, "telnet:", &p)) {
2151 chr = qemu_chr_open_tcp(p, 1, 0);
2152 } else
2153 if (strstart(filename, "udp:", &p)) {
2154 chr = qemu_chr_open_udp(p);
2155 } else
2156 if (strstart(filename, "mon:", &p)) {
2157 chr = qemu_chr_open(label, p, NULL);
2158 if (chr) {
2159 chr = qemu_chr_open_mux(chr);
2160 monitor_init(chr, MONITOR_USE_READLINE);
2161 } else {
2162 printf("Unable to open driver: %s\n", p);
2163 }
2164 } else if (!strcmp(filename, "msmouse")) {
2165 chr = qemu_chr_open_msmouse();
2166 } else
2167 #ifndef _WIN32
2168 if (strstart(filename, "unix:", &p)) {
2169 chr = qemu_chr_open_tcp(p, 0, 1);
2170 } else if (strstart(filename, "file:", &p)) {
2171 chr = qemu_chr_open_file_out(p);
2172 } else if (strstart(filename, "pipe:", &p)) {
2173 chr = qemu_chr_open_pipe(p);
2174 } else if (!strcmp(filename, "pty")) {
2175 chr = qemu_chr_open_pty();
2176 } else if (!strcmp(filename, "stdio")) {
2177 chr = qemu_chr_open_stdio();
2178 } else
2179 #if defined(__linux__)
2180 if (strstart(filename, "/dev/parport", NULL)) {
2181 chr = qemu_chr_open_pp(filename);
2182 } else
2183 #elif defined(__FreeBSD__) || defined(__DragonFly__)
2184 if (strstart(filename, "/dev/ppi", NULL)) {
2185 chr = qemu_chr_open_pp(filename);
2186 } else
2187 #endif
2188 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2189 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
2190 if (strstart(filename, "/dev/", NULL)) {
2191 chr = qemu_chr_open_tty(filename);
2192 } else
2193 #endif
2194 #else /* !_WIN32 */
2195 if (strstart(filename, "COM", NULL)) {
2196 chr = qemu_chr_open_win(filename);
2197 } else
2198 if (strstart(filename, "pipe:", &p)) {
2199 chr = qemu_chr_open_win_pipe(p);
2200 } else
2201 if (strstart(filename, "con:", NULL)) {
2202 chr = qemu_chr_open_win_con(filename);
2203 } else
2204 if (strstart(filename, "file:", &p)) {
2205 chr = qemu_chr_open_win_file_out(p);
2206 } else
2207 #endif
2208 #ifdef CONFIG_BRLAPI
2209 if (!strcmp(filename, "braille")) {
2210 chr = chr_baum_init();
2211 } else
2212 #endif
2213 {
2214 chr = NULL;
2215 }
2216
2217 if (chr) {
2218 if (!chr->filename)
2219 chr->filename = qemu_strdup(filename);
2220 chr->init = init;
2221 chr->label = qemu_strdup(label);
2222 TAILQ_INSERT_TAIL(&chardevs, chr, next);
2223 }
2224 return chr;
2225 }
2226
2227 void qemu_chr_close(CharDriverState *chr)
2228 {
2229 TAILQ_REMOVE(&chardevs, chr, next);
2230 if (chr->chr_close)
2231 chr->chr_close(chr);
2232 qemu_free(chr->filename);
2233 qemu_free(chr->label);
2234 qemu_free(chr);
2235 }
2236
2237 void qemu_chr_info(Monitor *mon)
2238 {
2239 CharDriverState *chr;
2240
2241 TAILQ_FOREACH(chr, &chardevs, next) {
2242 monitor_printf(mon, "%s: filename=%s\n", chr->label, chr->filename);
2243 }
2244 }
Patches shipped by Fedora