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qemu/virtio: fix reset with device removal
[qemu/aliguori-queue.git] / qemu-char.c
blob8084a6785d202d4bce89b9990dc52118ac85ac85
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 CONFIG_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 QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
110 QTAILQ_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 QTAILQ_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(QemuOpts *opts)
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 focus;
237 int mux_cnt;
238 int term_got_escape;
239 int max_size;
240 /* Intermediate input buffer allows to catch escape sequences even if the
241 currently active device is not accepting any input - but only until it
242 is full as well. */
243 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
244 int prod[MAX_MUX];
245 int cons[MAX_MUX];
246 int timestamps;
247 int linestart;
248 int64_t timestamps_start;
249 } MuxDriver;
250
251
252 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
253 {
254 MuxDriver *d = chr->opaque;
255 int ret;
256 if (!d->timestamps) {
257 ret = d->drv->chr_write(d->drv, buf, len);
258 } else {
259 int i;
260
261 ret = 0;
262 for (i = 0; i < len; i++) {
263 if (d->linestart) {
264 char buf1[64];
265 int64_t ti;
266 int secs;
267
268 ti = qemu_get_clock(rt_clock);
269 if (d->timestamps_start == -1)
270 d->timestamps_start = ti;
271 ti -= d->timestamps_start;
272 secs = ti / 1000;
273 snprintf(buf1, sizeof(buf1),
274 "[%02d:%02d:%02d.%03d] ",
275 secs / 3600,
276 (secs / 60) % 60,
277 secs % 60,
278 (int)(ti % 1000));
279 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
280 d->linestart = 0;
281 }
282 ret += d->drv->chr_write(d->drv, buf+i, 1);
283 if (buf[i] == '\n') {
284 d->linestart = 1;
285 }
286 }
287 }
288 return ret;
289 }
290
291 static const char * const mux_help[] = {
292 "% h print this help\n\r",
293 "% x exit emulator\n\r",
294 "% s save disk data back to file (if -snapshot)\n\r",
295 "% t toggle console timestamps\n\r"
296 "% b send break (magic sysrq)\n\r",
297 "% c switch between console and monitor\n\r",
298 "% % sends %\n\r",
299 NULL
300 };
301
302 int term_escape_char = 0x01; /* ctrl-a is used for escape */
303 static void mux_print_help(CharDriverState *chr)
304 {
305 int i, j;
306 char ebuf[15] = "Escape-Char";
307 char cbuf[50] = "\n\r";
308
309 if (term_escape_char > 0 && term_escape_char < 26) {
310 snprintf(cbuf, sizeof(cbuf), "\n\r");
311 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
312 } else {
313 snprintf(cbuf, sizeof(cbuf),
314 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
315 term_escape_char);
316 }
317 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
318 for (i = 0; mux_help[i] != NULL; i++) {
319 for (j=0; mux_help[i][j] != '\0'; j++) {
320 if (mux_help[i][j] == '%')
321 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
322 else
323 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
324 }
325 }
326 }
327
328 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
329 {
330 if (d->chr_event[mux_nr])
331 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
332 }
333
334 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
335 {
336 if (d->term_got_escape) {
337 d->term_got_escape = 0;
338 if (ch == term_escape_char)
339 goto send_char;
340 switch(ch) {
341 case '?':
342 case 'h':
343 mux_print_help(chr);
344 break;
345 case 'x':
346 {
347 const char *term = "QEMU: Terminated\n\r";
348 chr->chr_write(chr,(uint8_t *)term,strlen(term));
349 exit(0);
350 break;
351 }
352 case 's':
353 {
354 DriveInfo *dinfo;
355 QTAILQ_FOREACH(dinfo, &drives, next) {
356 bdrv_commit(dinfo->bdrv);
357 }
358 }
359 break;
360 case 'b':
361 qemu_chr_event(chr, CHR_EVENT_BREAK);
362 break;
363 case 'c':
364 /* Switch to the next registered device */
365 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
366 d->focus++;
367 if (d->focus >= d->mux_cnt)
368 d->focus = 0;
369 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
370 break;
371 case 't':
372 d->timestamps = !d->timestamps;
373 d->timestamps_start = -1;
374 d->linestart = 0;
375 break;
376 }
377 } else if (ch == term_escape_char) {
378 d->term_got_escape = 1;
379 } else {
380 send_char:
381 return 1;
382 }
383 return 0;
384 }
385
386 static void mux_chr_accept_input(CharDriverState *chr)
387 {
388 MuxDriver *d = chr->opaque;
389 int m = d->focus;
390
391 while (d->prod[m] != d->cons[m] &&
392 d->chr_can_read[m] &&
393 d->chr_can_read[m](d->ext_opaque[m])) {
394 d->chr_read[m](d->ext_opaque[m],
395 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
396 }
397 }
398
399 static int mux_chr_can_read(void *opaque)
400 {
401 CharDriverState *chr = opaque;
402 MuxDriver *d = chr->opaque;
403 int m = d->focus;
404
405 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
406 return 1;
407 if (d->chr_can_read[m])
408 return d->chr_can_read[m](d->ext_opaque[m]);
409 return 0;
410 }
411
412 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
413 {
414 CharDriverState *chr = opaque;
415 MuxDriver *d = chr->opaque;
416 int m = d->focus;
417 int i;
418
419 mux_chr_accept_input (opaque);
420
421 for(i = 0; i < size; i++)
422 if (mux_proc_byte(chr, d, buf[i])) {
423 if (d->prod[m] == d->cons[m] &&
424 d->chr_can_read[m] &&
425 d->chr_can_read[m](d->ext_opaque[m]))
426 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
427 else
428 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
429 }
430 }
431
432 static void mux_chr_event(void *opaque, int event)
433 {
434 CharDriverState *chr = opaque;
435 MuxDriver *d = chr->opaque;
436 int i;
437
438 /* Send the event to all registered listeners */
439 for (i = 0; i < d->mux_cnt; i++)
440 mux_chr_send_event(d, i, event);
441 }
442
443 static void mux_chr_update_read_handler(CharDriverState *chr)
444 {
445 MuxDriver *d = chr->opaque;
446
447 if (d->mux_cnt >= MAX_MUX) {
448 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
449 return;
450 }
451 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
452 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
453 d->chr_read[d->mux_cnt] = chr->chr_read;
454 d->chr_event[d->mux_cnt] = chr->chr_event;
455 /* Fix up the real driver with mux routines */
456 if (d->mux_cnt == 0) {
457 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
458 mux_chr_event, chr);
459 }
460 if (d->focus != -1) {
461 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
462 }
463 d->focus = d->mux_cnt;
464 d->mux_cnt++;
465 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
466 }
467
468 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
469 {
470 CharDriverState *chr;
471 MuxDriver *d;
472
473 chr = qemu_mallocz(sizeof(CharDriverState));
474 d = qemu_mallocz(sizeof(MuxDriver));
475
476 chr->opaque = d;
477 d->drv = drv;
478 d->focus = -1;
479 chr->chr_write = mux_chr_write;
480 chr->chr_update_read_handler = mux_chr_update_read_handler;
481 chr->chr_accept_input = mux_chr_accept_input;
482 return chr;
483 }
484
485
486 #ifdef _WIN32
487 int send_all(int fd, const void *buf, int len1)
488 {
489 int ret, len;
490
491 len = len1;
492 while (len > 0) {
493 ret = send(fd, buf, len, 0);
494 if (ret < 0) {
495 errno = WSAGetLastError();
496 if (errno != WSAEWOULDBLOCK) {
497 return -1;
498 }
499 } else if (ret == 0) {
500 break;
501 } else {
502 buf += ret;
503 len -= ret;
504 }
505 }
506 return len1 - len;
507 }
508
509 #else
510
511 static int unix_write(int fd, const uint8_t *buf, int len1)
512 {
513 int ret, len;
514
515 len = len1;
516 while (len > 0) {
517 ret = write(fd, buf, len);
518 if (ret < 0) {
519 if (errno != EINTR && errno != EAGAIN)
520 return -1;
521 } else if (ret == 0) {
522 break;
523 } else {
524 buf += ret;
525 len -= ret;
526 }
527 }
528 return len1 - len;
529 }
530
531 int send_all(int fd, const void *buf, int len1)
532 {
533 return unix_write(fd, buf, len1);
534 }
535 #endif /* !_WIN32 */
536
537 #ifndef _WIN32
538
539 typedef struct {
540 int fd_in, fd_out;
541 int max_size;
542 } FDCharDriver;
543
544 #define STDIO_MAX_CLIENTS 1
545 static int stdio_nb_clients = 0;
546
547 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
548 {
549 FDCharDriver *s = chr->opaque;
550 return send_all(s->fd_out, buf, len);
551 }
552
553 static int fd_chr_read_poll(void *opaque)
554 {
555 CharDriverState *chr = opaque;
556 FDCharDriver *s = chr->opaque;
557
558 s->max_size = qemu_chr_can_read(chr);
559 return s->max_size;
560 }
561
562 static void fd_chr_read(void *opaque)
563 {
564 CharDriverState *chr = opaque;
565 FDCharDriver *s = chr->opaque;
566 int size, len;
567 uint8_t buf[1024];
568
569 len = sizeof(buf);
570 if (len > s->max_size)
571 len = s->max_size;
572 if (len == 0)
573 return;
574 size = read(s->fd_in, buf, len);
575 if (size == 0) {
576 /* FD has been closed. Remove it from the active list. */
577 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
578 qemu_chr_event(chr, CHR_EVENT_CLOSED);
579 return;
580 }
581 if (size > 0) {
582 qemu_chr_read(chr, buf, size);
583 }
584 }
585
586 static void fd_chr_update_read_handler(CharDriverState *chr)
587 {
588 FDCharDriver *s = chr->opaque;
589
590 if (s->fd_in >= 0) {
591 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
592 } else {
593 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
594 fd_chr_read, NULL, chr);
595 }
596 }
597 }
598
599 static void fd_chr_close(struct CharDriverState *chr)
600 {
601 FDCharDriver *s = chr->opaque;
602
603 if (s->fd_in >= 0) {
604 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
605 } else {
606 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
607 }
608 }
609
610 qemu_free(s);
611 qemu_chr_event(chr, CHR_EVENT_CLOSED);
612 }
613
614 /* open a character device to a unix fd */
615 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
616 {
617 CharDriverState *chr;
618 FDCharDriver *s;
619
620 chr = qemu_mallocz(sizeof(CharDriverState));
621 s = qemu_mallocz(sizeof(FDCharDriver));
622 s->fd_in = fd_in;
623 s->fd_out = fd_out;
624 chr->opaque = s;
625 chr->chr_write = fd_chr_write;
626 chr->chr_update_read_handler = fd_chr_update_read_handler;
627 chr->chr_close = fd_chr_close;
628
629 qemu_chr_reset(chr);
630
631 return chr;
632 }
633
634 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
635 {
636 int fd_out;
637
638 TFR(fd_out = open(qemu_opt_get(opts, "path"),
639 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
640 if (fd_out < 0)
641 return NULL;
642 return qemu_chr_open_fd(-1, fd_out);
643 }
644
645 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
646 {
647 int fd_in, fd_out;
648 char filename_in[256], filename_out[256];
649 const char *filename = qemu_opt_get(opts, "path");
650
651 if (filename == NULL) {
652 fprintf(stderr, "chardev: pipe: no filename given\n");
653 return NULL;
654 }
655
656 snprintf(filename_in, 256, "%s.in", filename);
657 snprintf(filename_out, 256, "%s.out", filename);
658 TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
659 TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
660 if (fd_in < 0 || fd_out < 0) {
661 if (fd_in >= 0)
662 close(fd_in);
663 if (fd_out >= 0)
664 close(fd_out);
665 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
666 if (fd_in < 0)
667 return NULL;
668 }
669 return qemu_chr_open_fd(fd_in, fd_out);
670 }
671
672
673 /* for STDIO, we handle the case where several clients use it
674 (nographic mode) */
675
676 #define TERM_FIFO_MAX_SIZE 1
677
678 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
679 static int term_fifo_size;
680
681 static int stdio_read_poll(void *opaque)
682 {
683 CharDriverState *chr = opaque;
684
685 /* try to flush the queue if needed */
686 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
687 qemu_chr_read(chr, term_fifo, 1);
688 term_fifo_size = 0;
689 }
690 /* see if we can absorb more chars */
691 if (term_fifo_size == 0)
692 return 1;
693 else
694 return 0;
695 }
696
697 static void stdio_read(void *opaque)
698 {
699 int size;
700 uint8_t buf[1];
701 CharDriverState *chr = opaque;
702
703 size = read(0, buf, 1);
704 if (size == 0) {
705 /* stdin has been closed. Remove it from the active list. */
706 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
707 qemu_chr_event(chr, CHR_EVENT_CLOSED);
708 return;
709 }
710 if (size > 0) {
711 if (qemu_chr_can_read(chr) > 0) {
712 qemu_chr_read(chr, buf, 1);
713 } else if (term_fifo_size == 0) {
714 term_fifo[term_fifo_size++] = buf[0];
715 }
716 }
717 }
718
719 /* init terminal so that we can grab keys */
720 static struct termios oldtty;
721 static int old_fd0_flags;
722 static int term_atexit_done;
723
724 static void term_exit(void)
725 {
726 tcsetattr (0, TCSANOW, &oldtty);
727 fcntl(0, F_SETFL, old_fd0_flags);
728 }
729
730 static void term_init(void)
731 {
732 struct termios tty;
733
734 tcgetattr (0, &tty);
735 oldtty = tty;
736 old_fd0_flags = fcntl(0, F_GETFL);
737
738 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
739 |INLCR|IGNCR|ICRNL|IXON);
740 tty.c_oflag |= OPOST;
741 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
742 /* if graphical mode, we allow Ctrl-C handling */
743 if (display_type == DT_NOGRAPHIC)
744 tty.c_lflag &= ~ISIG;
745 tty.c_cflag &= ~(CSIZE|PARENB);
746 tty.c_cflag |= CS8;
747 tty.c_cc[VMIN] = 1;
748 tty.c_cc[VTIME] = 0;
749
750 tcsetattr (0, TCSANOW, &tty);
751
752 if (!term_atexit_done++)
753 atexit(term_exit);
754
755 fcntl(0, F_SETFL, O_NONBLOCK);
756 }
757
758 static void qemu_chr_close_stdio(struct CharDriverState *chr)
759 {
760 term_exit();
761 stdio_nb_clients--;
762 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
763 fd_chr_close(chr);
764 }
765
766 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
767 {
768 CharDriverState *chr;
769
770 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
771 return NULL;
772 chr = qemu_chr_open_fd(0, 1);
773 chr->chr_close = qemu_chr_close_stdio;
774 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
775 stdio_nb_clients++;
776 term_init();
777
778 return chr;
779 }
780
781 #ifdef __sun__
782 /* Once Solaris has openpty(), this is going to be removed. */
783 static int openpty(int *amaster, int *aslave, char *name,
784 struct termios *termp, struct winsize *winp)
785 {
786 const char *slave;
787 int mfd = -1, sfd = -1;
788
789 *amaster = *aslave = -1;
790
791 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
792 if (mfd < 0)
793 goto err;
794
795 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
796 goto err;
797
798 if ((slave = ptsname(mfd)) == NULL)
799 goto err;
800
801 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
802 goto err;
803
804 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
805 (termp != NULL && tcgetattr(sfd, termp) < 0))
806 goto err;
807
808 if (amaster)
809 *amaster = mfd;
810 if (aslave)
811 *aslave = sfd;
812 if (winp)
813 ioctl(sfd, TIOCSWINSZ, winp);
814
815 return 0;
816
817 err:
818 if (sfd != -1)
819 close(sfd);
820 close(mfd);
821 return -1;
822 }
823
824 static void cfmakeraw (struct termios *termios_p)
825 {
826 termios_p->c_iflag &=
827 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
828 termios_p->c_oflag &= ~OPOST;
829 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
830 termios_p->c_cflag &= ~(CSIZE|PARENB);
831 termios_p->c_cflag |= CS8;
832
833 termios_p->c_cc[VMIN] = 0;
834 termios_p->c_cc[VTIME] = 0;
835 }
836 #endif
837
838 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
839 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
840
841 typedef struct {
842 int fd;
843 int connected;
844 int polling;
845 int read_bytes;
846 QEMUTimer *timer;
847 } PtyCharDriver;
848
849 static void pty_chr_update_read_handler(CharDriverState *chr);
850 static void pty_chr_state(CharDriverState *chr, int connected);
851
852 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
853 {
854 PtyCharDriver *s = chr->opaque;
855
856 if (!s->connected) {
857 /* guest sends data, check for (re-)connect */
858 pty_chr_update_read_handler(chr);
859 return 0;
860 }
861 return send_all(s->fd, buf, len);
862 }
863
864 static int pty_chr_read_poll(void *opaque)
865 {
866 CharDriverState *chr = opaque;
867 PtyCharDriver *s = chr->opaque;
868
869 s->read_bytes = qemu_chr_can_read(chr);
870 return s->read_bytes;
871 }
872
873 static void pty_chr_read(void *opaque)
874 {
875 CharDriverState *chr = opaque;
876 PtyCharDriver *s = chr->opaque;
877 int size, len;
878 uint8_t buf[1024];
879
880 len = sizeof(buf);
881 if (len > s->read_bytes)
882 len = s->read_bytes;
883 if (len == 0)
884 return;
885 size = read(s->fd, buf, len);
886 if ((size == -1 && errno == EIO) ||
887 (size == 0)) {
888 pty_chr_state(chr, 0);
889 return;
890 }
891 if (size > 0) {
892 pty_chr_state(chr, 1);
893 qemu_chr_read(chr, buf, size);
894 }
895 }
896
897 static void pty_chr_update_read_handler(CharDriverState *chr)
898 {
899 PtyCharDriver *s = chr->opaque;
900
901 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
902 pty_chr_read, NULL, chr);
903 s->polling = 1;
904 /*
905 * Short timeout here: just need wait long enougth that qemu makes
906 * it through the poll loop once. When reconnected we want a
907 * short timeout so we notice it almost instantly. Otherwise
908 * read() gives us -EIO instantly, making pty_chr_state() reset the
909 * timeout to the normal (much longer) poll interval before the
910 * timer triggers.
911 */
912 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
913 }
914
915 static void pty_chr_state(CharDriverState *chr, int connected)
916 {
917 PtyCharDriver *s = chr->opaque;
918
919 if (!connected) {
920 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
921 s->connected = 0;
922 s->polling = 0;
923 /* (re-)connect poll interval for idle guests: once per second.
924 * We check more frequently in case the guests sends data to
925 * the virtual device linked to our pty. */
926 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
927 } else {
928 if (!s->connected)
929 qemu_chr_reset(chr);
930 s->connected = 1;
931 }
932 }
933
934 static void pty_chr_timer(void *opaque)
935 {
936 struct CharDriverState *chr = opaque;
937 PtyCharDriver *s = chr->opaque;
938
939 if (s->connected)
940 return;
941 if (s->polling) {
942 /* If we arrive here without polling being cleared due
943 * read returning -EIO, then we are (re-)connected */
944 pty_chr_state(chr, 1);
945 return;
946 }
947
948 /* Next poll ... */
949 pty_chr_update_read_handler(chr);
950 }
951
952 static void pty_chr_close(struct CharDriverState *chr)
953 {
954 PtyCharDriver *s = chr->opaque;
955
956 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
957 close(s->fd);
958 qemu_del_timer(s->timer);
959 qemu_free_timer(s->timer);
960 qemu_free(s);
961 qemu_chr_event(chr, CHR_EVENT_CLOSED);
962 }
963
964 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
965 {
966 CharDriverState *chr;
967 PtyCharDriver *s;
968 struct termios tty;
969 int slave_fd, len;
970 #if defined(__OpenBSD__) || defined(__DragonFly__)
971 char pty_name[PATH_MAX];
972 #define q_ptsname(x) pty_name
973 #else
974 char *pty_name = NULL;
975 #define q_ptsname(x) ptsname(x)
976 #endif
977
978 chr = qemu_mallocz(sizeof(CharDriverState));
979 s = qemu_mallocz(sizeof(PtyCharDriver));
980
981 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
982 return NULL;
983 }
984
985 /* Set raw attributes on the pty. */
986 tcgetattr(slave_fd, &tty);
987 cfmakeraw(&tty);
988 tcsetattr(slave_fd, TCSAFLUSH, &tty);
989 close(slave_fd);
990
991 len = strlen(q_ptsname(s->fd)) + 5;
992 chr->filename = qemu_malloc(len);
993 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
994 qemu_opt_set(opts, "path", q_ptsname(s->fd));
995 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
996
997 chr->opaque = s;
998 chr->chr_write = pty_chr_write;
999 chr->chr_update_read_handler = pty_chr_update_read_handler;
1000 chr->chr_close = pty_chr_close;
1001
1002 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
1003
1004 return chr;
1005 }
1006
1007 static void tty_serial_init(int fd, int speed,
1008 int parity, int data_bits, int stop_bits)
1009 {
1010 struct termios tty;
1011 speed_t spd;
1012
1013 #if 0
1014 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1015 speed, parity, data_bits, stop_bits);
1016 #endif
1017 tcgetattr (fd, &tty);
1018
1019 #define MARGIN 1.1
1020 if (speed <= 50 * MARGIN)
1021 spd = B50;
1022 else if (speed <= 75 * MARGIN)
1023 spd = B75;
1024 else if (speed <= 300 * MARGIN)
1025 spd = B300;
1026 else if (speed <= 600 * MARGIN)
1027 spd = B600;
1028 else if (speed <= 1200 * MARGIN)
1029 spd = B1200;
1030 else if (speed <= 2400 * MARGIN)
1031 spd = B2400;
1032 else if (speed <= 4800 * MARGIN)
1033 spd = B4800;
1034 else if (speed <= 9600 * MARGIN)
1035 spd = B9600;
1036 else if (speed <= 19200 * MARGIN)
1037 spd = B19200;
1038 else if (speed <= 38400 * MARGIN)
1039 spd = B38400;
1040 else if (speed <= 57600 * MARGIN)
1041 spd = B57600;
1042 else if (speed <= 115200 * MARGIN)
1043 spd = B115200;
1044 else
1045 spd = B115200;
1046
1047 cfsetispeed(&tty, spd);
1048 cfsetospeed(&tty, spd);
1049
1050 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1051 |INLCR|IGNCR|ICRNL|IXON);
1052 tty.c_oflag |= OPOST;
1053 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1054 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1055 switch(data_bits) {
1056 default:
1057 case 8:
1058 tty.c_cflag |= CS8;
1059 break;
1060 case 7:
1061 tty.c_cflag |= CS7;
1062 break;
1063 case 6:
1064 tty.c_cflag |= CS6;
1065 break;
1066 case 5:
1067 tty.c_cflag |= CS5;
1068 break;
1069 }
1070 switch(parity) {
1071 default:
1072 case 'N':
1073 break;
1074 case 'E':
1075 tty.c_cflag |= PARENB;
1076 break;
1077 case 'O':
1078 tty.c_cflag |= PARENB | PARODD;
1079 break;
1080 }
1081 if (stop_bits == 2)
1082 tty.c_cflag |= CSTOPB;
1083
1084 tcsetattr (fd, TCSANOW, &tty);
1085 }
1086
1087 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1088 {
1089 FDCharDriver *s = chr->opaque;
1090
1091 switch(cmd) {
1092 case CHR_IOCTL_SERIAL_SET_PARAMS:
1093 {
1094 QEMUSerialSetParams *ssp = arg;
1095 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1096 ssp->data_bits, ssp->stop_bits);
1097 }
1098 break;
1099 case CHR_IOCTL_SERIAL_SET_BREAK:
1100 {
1101 int enable = *(int *)arg;
1102 if (enable)
1103 tcsendbreak(s->fd_in, 1);
1104 }
1105 break;
1106 case CHR_IOCTL_SERIAL_GET_TIOCM:
1107 {
1108 int sarg = 0;
1109 int *targ = (int *)arg;
1110 ioctl(s->fd_in, TIOCMGET, &sarg);
1111 *targ = 0;
1112 if (sarg & TIOCM_CTS)
1113 *targ |= CHR_TIOCM_CTS;
1114 if (sarg & TIOCM_CAR)
1115 *targ |= CHR_TIOCM_CAR;
1116 if (sarg & TIOCM_DSR)
1117 *targ |= CHR_TIOCM_DSR;
1118 if (sarg & TIOCM_RI)
1119 *targ |= CHR_TIOCM_RI;
1120 if (sarg & TIOCM_DTR)
1121 *targ |= CHR_TIOCM_DTR;
1122 if (sarg & TIOCM_RTS)
1123 *targ |= CHR_TIOCM_RTS;
1124 }
1125 break;
1126 case CHR_IOCTL_SERIAL_SET_TIOCM:
1127 {
1128 int sarg = *(int *)arg;
1129 int targ = 0;
1130 ioctl(s->fd_in, TIOCMGET, &targ);
1131 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1132 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1133 if (sarg & CHR_TIOCM_CTS)
1134 targ |= TIOCM_CTS;
1135 if (sarg & CHR_TIOCM_CAR)
1136 targ |= TIOCM_CAR;
1137 if (sarg & CHR_TIOCM_DSR)
1138 targ |= TIOCM_DSR;
1139 if (sarg & CHR_TIOCM_RI)
1140 targ |= TIOCM_RI;
1141 if (sarg & CHR_TIOCM_DTR)
1142 targ |= TIOCM_DTR;
1143 if (sarg & CHR_TIOCM_RTS)
1144 targ |= TIOCM_RTS;
1145 ioctl(s->fd_in, TIOCMSET, &targ);
1146 }
1147 break;
1148 default:
1149 return -ENOTSUP;
1150 }
1151 return 0;
1152 }
1153
1154 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1155 {
1156 const char *filename = qemu_opt_get(opts, "path");
1157 CharDriverState *chr;
1158 int fd;
1159
1160 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1161 tty_serial_init(fd, 115200, 'N', 8, 1);
1162 chr = qemu_chr_open_fd(fd, fd);
1163 if (!chr) {
1164 close(fd);
1165 return NULL;
1166 }
1167 chr->chr_ioctl = tty_serial_ioctl;
1168 qemu_chr_reset(chr);
1169 return chr;
1170 }
1171 #else /* ! __linux__ && ! __sun__ */
1172 static CharDriverState *qemu_chr_open_pty(void)
1173 {
1174 return NULL;
1175 }
1176 #endif /* __linux__ || __sun__ */
1177
1178 #if defined(__linux__)
1179 typedef struct {
1180 int fd;
1181 int mode;
1182 } ParallelCharDriver;
1183
1184 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1185 {
1186 if (s->mode != mode) {
1187 int m = mode;
1188 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1189 return 0;
1190 s->mode = mode;
1191 }
1192 return 1;
1193 }
1194
1195 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1196 {
1197 ParallelCharDriver *drv = chr->opaque;
1198 int fd = drv->fd;
1199 uint8_t b;
1200
1201 switch(cmd) {
1202 case CHR_IOCTL_PP_READ_DATA:
1203 if (ioctl(fd, PPRDATA, &b) < 0)
1204 return -ENOTSUP;
1205 *(uint8_t *)arg = b;
1206 break;
1207 case CHR_IOCTL_PP_WRITE_DATA:
1208 b = *(uint8_t *)arg;
1209 if (ioctl(fd, PPWDATA, &b) < 0)
1210 return -ENOTSUP;
1211 break;
1212 case CHR_IOCTL_PP_READ_CONTROL:
1213 if (ioctl(fd, PPRCONTROL, &b) < 0)
1214 return -ENOTSUP;
1215 /* Linux gives only the lowest bits, and no way to know data
1216 direction! For better compatibility set the fixed upper
1217 bits. */
1218 *(uint8_t *)arg = b | 0xc0;
1219 break;
1220 case CHR_IOCTL_PP_WRITE_CONTROL:
1221 b = *(uint8_t *)arg;
1222 if (ioctl(fd, PPWCONTROL, &b) < 0)
1223 return -ENOTSUP;
1224 break;
1225 case CHR_IOCTL_PP_READ_STATUS:
1226 if (ioctl(fd, PPRSTATUS, &b) < 0)
1227 return -ENOTSUP;
1228 *(uint8_t *)arg = b;
1229 break;
1230 case CHR_IOCTL_PP_DATA_DIR:
1231 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1232 return -ENOTSUP;
1233 break;
1234 case CHR_IOCTL_PP_EPP_READ_ADDR:
1235 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1236 struct ParallelIOArg *parg = arg;
1237 int n = read(fd, parg->buffer, parg->count);
1238 if (n != parg->count) {
1239 return -EIO;
1240 }
1241 }
1242 break;
1243 case CHR_IOCTL_PP_EPP_READ:
1244 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1245 struct ParallelIOArg *parg = arg;
1246 int n = read(fd, parg->buffer, parg->count);
1247 if (n != parg->count) {
1248 return -EIO;
1249 }
1250 }
1251 break;
1252 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1253 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1254 struct ParallelIOArg *parg = arg;
1255 int n = write(fd, parg->buffer, parg->count);
1256 if (n != parg->count) {
1257 return -EIO;
1258 }
1259 }
1260 break;
1261 case CHR_IOCTL_PP_EPP_WRITE:
1262 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1263 struct ParallelIOArg *parg = arg;
1264 int n = write(fd, parg->buffer, parg->count);
1265 if (n != parg->count) {
1266 return -EIO;
1267 }
1268 }
1269 break;
1270 default:
1271 return -ENOTSUP;
1272 }
1273 return 0;
1274 }
1275
1276 static void pp_close(CharDriverState *chr)
1277 {
1278 ParallelCharDriver *drv = chr->opaque;
1279 int fd = drv->fd;
1280
1281 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1282 ioctl(fd, PPRELEASE);
1283 close(fd);
1284 qemu_free(drv);
1285 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1286 }
1287
1288 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1289 {
1290 const char *filename = qemu_opt_get(opts, "path");
1291 CharDriverState *chr;
1292 ParallelCharDriver *drv;
1293 int fd;
1294
1295 TFR(fd = open(filename, O_RDWR));
1296 if (fd < 0)
1297 return NULL;
1298
1299 if (ioctl(fd, PPCLAIM) < 0) {
1300 close(fd);
1301 return NULL;
1302 }
1303
1304 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1305 drv->fd = fd;
1306 drv->mode = IEEE1284_MODE_COMPAT;
1307
1308 chr = qemu_mallocz(sizeof(CharDriverState));
1309 chr->chr_write = null_chr_write;
1310 chr->chr_ioctl = pp_ioctl;
1311 chr->chr_close = pp_close;
1312 chr->opaque = drv;
1313
1314 qemu_chr_reset(chr);
1315
1316 return chr;
1317 }
1318 #endif /* __linux__ */
1319
1320 #if defined(__FreeBSD__) || defined(__DragonFly__)
1321 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1322 {
1323 int fd = (int)chr->opaque;
1324 uint8_t b;
1325
1326 switch(cmd) {
1327 case CHR_IOCTL_PP_READ_DATA:
1328 if (ioctl(fd, PPIGDATA, &b) < 0)
1329 return -ENOTSUP;
1330 *(uint8_t *)arg = b;
1331 break;
1332 case CHR_IOCTL_PP_WRITE_DATA:
1333 b = *(uint8_t *)arg;
1334 if (ioctl(fd, PPISDATA, &b) < 0)
1335 return -ENOTSUP;
1336 break;
1337 case CHR_IOCTL_PP_READ_CONTROL:
1338 if (ioctl(fd, PPIGCTRL, &b) < 0)
1339 return -ENOTSUP;
1340 *(uint8_t *)arg = b;
1341 break;
1342 case CHR_IOCTL_PP_WRITE_CONTROL:
1343 b = *(uint8_t *)arg;
1344 if (ioctl(fd, PPISCTRL, &b) < 0)
1345 return -ENOTSUP;
1346 break;
1347 case CHR_IOCTL_PP_READ_STATUS:
1348 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1349 return -ENOTSUP;
1350 *(uint8_t *)arg = b;
1351 break;
1352 default:
1353 return -ENOTSUP;
1354 }
1355 return 0;
1356 }
1357
1358 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1359 {
1360 const char *filename = qemu_opt_get(opts, "path");
1361 CharDriverState *chr;
1362 int fd;
1363
1364 fd = open(filename, O_RDWR);
1365 if (fd < 0)
1366 return NULL;
1367
1368 chr = qemu_mallocz(sizeof(CharDriverState));
1369 chr->opaque = (void *)fd;
1370 chr->chr_write = null_chr_write;
1371 chr->chr_ioctl = pp_ioctl;
1372 return chr;
1373 }
1374 #endif
1375
1376 #else /* _WIN32 */
1377
1378 typedef struct {
1379 int max_size;
1380 HANDLE hcom, hrecv, hsend;
1381 OVERLAPPED orecv, osend;
1382 BOOL fpipe;
1383 DWORD len;
1384 } WinCharState;
1385
1386 #define NSENDBUF 2048
1387 #define NRECVBUF 2048
1388 #define MAXCONNECT 1
1389 #define NTIMEOUT 5000
1390
1391 static int win_chr_poll(void *opaque);
1392 static int win_chr_pipe_poll(void *opaque);
1393
1394 static void win_chr_close(CharDriverState *chr)
1395 {
1396 WinCharState *s = chr->opaque;
1397
1398 if (s->hsend) {
1399 CloseHandle(s->hsend);
1400 s->hsend = NULL;
1401 }
1402 if (s->hrecv) {
1403 CloseHandle(s->hrecv);
1404 s->hrecv = NULL;
1405 }
1406 if (s->hcom) {
1407 CloseHandle(s->hcom);
1408 s->hcom = NULL;
1409 }
1410 if (s->fpipe)
1411 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1412 else
1413 qemu_del_polling_cb(win_chr_poll, chr);
1414
1415 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1416 }
1417
1418 static int win_chr_init(CharDriverState *chr, const char *filename)
1419 {
1420 WinCharState *s = chr->opaque;
1421 COMMCONFIG comcfg;
1422 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1423 COMSTAT comstat;
1424 DWORD size;
1425 DWORD err;
1426
1427 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1428 if (!s->hsend) {
1429 fprintf(stderr, "Failed CreateEvent\n");
1430 goto fail;
1431 }
1432 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1433 if (!s->hrecv) {
1434 fprintf(stderr, "Failed CreateEvent\n");
1435 goto fail;
1436 }
1437
1438 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1439 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1440 if (s->hcom == INVALID_HANDLE_VALUE) {
1441 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1442 s->hcom = NULL;
1443 goto fail;
1444 }
1445
1446 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1447 fprintf(stderr, "Failed SetupComm\n");
1448 goto fail;
1449 }
1450
1451 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1452 size = sizeof(COMMCONFIG);
1453 GetDefaultCommConfig(filename, &comcfg, &size);
1454 comcfg.dcb.DCBlength = sizeof(DCB);
1455 CommConfigDialog(filename, NULL, &comcfg);
1456
1457 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1458 fprintf(stderr, "Failed SetCommState\n");
1459 goto fail;
1460 }
1461
1462 if (!SetCommMask(s->hcom, EV_ERR)) {
1463 fprintf(stderr, "Failed SetCommMask\n");
1464 goto fail;
1465 }
1466
1467 cto.ReadIntervalTimeout = MAXDWORD;
1468 if (!SetCommTimeouts(s->hcom, &cto)) {
1469 fprintf(stderr, "Failed SetCommTimeouts\n");
1470 goto fail;
1471 }
1472
1473 if (!ClearCommError(s->hcom, &err, &comstat)) {
1474 fprintf(stderr, "Failed ClearCommError\n");
1475 goto fail;
1476 }
1477 qemu_add_polling_cb(win_chr_poll, chr);
1478 return 0;
1479
1480 fail:
1481 win_chr_close(chr);
1482 return -1;
1483 }
1484
1485 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1486 {
1487 WinCharState *s = chr->opaque;
1488 DWORD len, ret, size, err;
1489
1490 len = len1;
1491 ZeroMemory(&s->osend, sizeof(s->osend));
1492 s->osend.hEvent = s->hsend;
1493 while (len > 0) {
1494 if (s->hsend)
1495 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1496 else
1497 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1498 if (!ret) {
1499 err = GetLastError();
1500 if (err == ERROR_IO_PENDING) {
1501 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1502 if (ret) {
1503 buf += size;
1504 len -= size;
1505 } else {
1506 break;
1507 }
1508 } else {
1509 break;
1510 }
1511 } else {
1512 buf += size;
1513 len -= size;
1514 }
1515 }
1516 return len1 - len;
1517 }
1518
1519 static int win_chr_read_poll(CharDriverState *chr)
1520 {
1521 WinCharState *s = chr->opaque;
1522
1523 s->max_size = qemu_chr_can_read(chr);
1524 return s->max_size;
1525 }
1526
1527 static void win_chr_readfile(CharDriverState *chr)
1528 {
1529 WinCharState *s = chr->opaque;
1530 int ret, err;
1531 uint8_t buf[1024];
1532 DWORD size;
1533
1534 ZeroMemory(&s->orecv, sizeof(s->orecv));
1535 s->orecv.hEvent = s->hrecv;
1536 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1537 if (!ret) {
1538 err = GetLastError();
1539 if (err == ERROR_IO_PENDING) {
1540 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1541 }
1542 }
1543
1544 if (size > 0) {
1545 qemu_chr_read(chr, buf, size);
1546 }
1547 }
1548
1549 static void win_chr_read(CharDriverState *chr)
1550 {
1551 WinCharState *s = chr->opaque;
1552
1553 if (s->len > s->max_size)
1554 s->len = s->max_size;
1555 if (s->len == 0)
1556 return;
1557
1558 win_chr_readfile(chr);
1559 }
1560
1561 static int win_chr_poll(void *opaque)
1562 {
1563 CharDriverState *chr = opaque;
1564 WinCharState *s = chr->opaque;
1565 COMSTAT status;
1566 DWORD comerr;
1567
1568 ClearCommError(s->hcom, &comerr, &status);
1569 if (status.cbInQue > 0) {
1570 s->len = status.cbInQue;
1571 win_chr_read_poll(chr);
1572 win_chr_read(chr);
1573 return 1;
1574 }
1575 return 0;
1576 }
1577
1578 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1579 {
1580 const char *filename = qemu_opt_get(opts, "path");
1581 CharDriverState *chr;
1582 WinCharState *s;
1583
1584 chr = qemu_mallocz(sizeof(CharDriverState));
1585 s = qemu_mallocz(sizeof(WinCharState));
1586 chr->opaque = s;
1587 chr->chr_write = win_chr_write;
1588 chr->chr_close = win_chr_close;
1589
1590 if (win_chr_init(chr, filename) < 0) {
1591 free(s);
1592 free(chr);
1593 return NULL;
1594 }
1595 qemu_chr_reset(chr);
1596 return chr;
1597 }
1598
1599 static int win_chr_pipe_poll(void *opaque)
1600 {
1601 CharDriverState *chr = opaque;
1602 WinCharState *s = chr->opaque;
1603 DWORD size;
1604
1605 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1606 if (size > 0) {
1607 s->len = size;
1608 win_chr_read_poll(chr);
1609 win_chr_read(chr);
1610 return 1;
1611 }
1612 return 0;
1613 }
1614
1615 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1616 {
1617 WinCharState *s = chr->opaque;
1618 OVERLAPPED ov;
1619 int ret;
1620 DWORD size;
1621 char openname[256];
1622
1623 s->fpipe = TRUE;
1624
1625 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1626 if (!s->hsend) {
1627 fprintf(stderr, "Failed CreateEvent\n");
1628 goto fail;
1629 }
1630 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1631 if (!s->hrecv) {
1632 fprintf(stderr, "Failed CreateEvent\n");
1633 goto fail;
1634 }
1635
1636 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1637 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1638 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1639 PIPE_WAIT,
1640 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1641 if (s->hcom == INVALID_HANDLE_VALUE) {
1642 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1643 s->hcom = NULL;
1644 goto fail;
1645 }
1646
1647 ZeroMemory(&ov, sizeof(ov));
1648 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1649 ret = ConnectNamedPipe(s->hcom, &ov);
1650 if (ret) {
1651 fprintf(stderr, "Failed ConnectNamedPipe\n");
1652 goto fail;
1653 }
1654
1655 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1656 if (!ret) {
1657 fprintf(stderr, "Failed GetOverlappedResult\n");
1658 if (ov.hEvent) {
1659 CloseHandle(ov.hEvent);
1660 ov.hEvent = NULL;
1661 }
1662 goto fail;
1663 }
1664
1665 if (ov.hEvent) {
1666 CloseHandle(ov.hEvent);
1667 ov.hEvent = NULL;
1668 }
1669 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1670 return 0;
1671
1672 fail:
1673 win_chr_close(chr);
1674 return -1;
1675 }
1676
1677
1678 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1679 {
1680 const char *filename = qemu_opt_get(opts, "path");
1681 CharDriverState *chr;
1682 WinCharState *s;
1683
1684 chr = qemu_mallocz(sizeof(CharDriverState));
1685 s = qemu_mallocz(sizeof(WinCharState));
1686 chr->opaque = s;
1687 chr->chr_write = win_chr_write;
1688 chr->chr_close = win_chr_close;
1689
1690 if (win_chr_pipe_init(chr, filename) < 0) {
1691 free(s);
1692 free(chr);
1693 return NULL;
1694 }
1695 qemu_chr_reset(chr);
1696 return chr;
1697 }
1698
1699 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1700 {
1701 CharDriverState *chr;
1702 WinCharState *s;
1703
1704 chr = qemu_mallocz(sizeof(CharDriverState));
1705 s = qemu_mallocz(sizeof(WinCharState));
1706 s->hcom = fd_out;
1707 chr->opaque = s;
1708 chr->chr_write = win_chr_write;
1709 qemu_chr_reset(chr);
1710 return chr;
1711 }
1712
1713 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1714 {
1715 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1716 }
1717
1718 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1719 {
1720 const char *file_out = qemu_opt_get(opts, "path");
1721 HANDLE fd_out;
1722
1723 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1724 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1725 if (fd_out == INVALID_HANDLE_VALUE)
1726 return NULL;
1727
1728 return qemu_chr_open_win_file(fd_out);
1729 }
1730 #endif /* !_WIN32 */
1731
1732 /***********************************************************/
1733 /* UDP Net console */
1734
1735 typedef struct {
1736 int fd;
1737 uint8_t buf[1024];
1738 int bufcnt;
1739 int bufptr;
1740 int max_size;
1741 } NetCharDriver;
1742
1743 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1744 {
1745 NetCharDriver *s = chr->opaque;
1746
1747 return send(s->fd, (const void *)buf, len, 0);
1748 }
1749
1750 static int udp_chr_read_poll(void *opaque)
1751 {
1752 CharDriverState *chr = opaque;
1753 NetCharDriver *s = chr->opaque;
1754
1755 s->max_size = qemu_chr_can_read(chr);
1756
1757 /* If there were any stray characters in the queue process them
1758 * first
1759 */
1760 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1761 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1762 s->bufptr++;
1763 s->max_size = qemu_chr_can_read(chr);
1764 }
1765 return s->max_size;
1766 }
1767
1768 static void udp_chr_read(void *opaque)
1769 {
1770 CharDriverState *chr = opaque;
1771 NetCharDriver *s = chr->opaque;
1772
1773 if (s->max_size == 0)
1774 return;
1775 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1776 s->bufptr = s->bufcnt;
1777 if (s->bufcnt <= 0)
1778 return;
1779
1780 s->bufptr = 0;
1781 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1782 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1783 s->bufptr++;
1784 s->max_size = qemu_chr_can_read(chr);
1785 }
1786 }
1787
1788 static void udp_chr_update_read_handler(CharDriverState *chr)
1789 {
1790 NetCharDriver *s = chr->opaque;
1791
1792 if (s->fd >= 0) {
1793 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1794 udp_chr_read, NULL, chr);
1795 }
1796 }
1797
1798 static void udp_chr_close(CharDriverState *chr)
1799 {
1800 NetCharDriver *s = chr->opaque;
1801 if (s->fd >= 0) {
1802 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1803 closesocket(s->fd);
1804 }
1805 qemu_free(s);
1806 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1807 }
1808
1809 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1810 {
1811 CharDriverState *chr = NULL;
1812 NetCharDriver *s = NULL;
1813 int fd = -1;
1814
1815 chr = qemu_mallocz(sizeof(CharDriverState));
1816 s = qemu_mallocz(sizeof(NetCharDriver));
1817
1818 fd = inet_dgram_opts(opts);
1819 if (fd < 0) {
1820 fprintf(stderr, "inet_dgram_opts failed\n");
1821 goto return_err;
1822 }
1823
1824 s->fd = fd;
1825 s->bufcnt = 0;
1826 s->bufptr = 0;
1827 chr->opaque = s;
1828 chr->chr_write = udp_chr_write;
1829 chr->chr_update_read_handler = udp_chr_update_read_handler;
1830 chr->chr_close = udp_chr_close;
1831 return chr;
1832
1833 return_err:
1834 if (chr)
1835 free(chr);
1836 if (s)
1837 free(s);
1838 if (fd >= 0)
1839 closesocket(fd);
1840 return NULL;
1841 }
1842
1843 /***********************************************************/
1844 /* TCP Net console */
1845
1846 typedef struct {
1847 int fd, listen_fd;
1848 int connected;
1849 int max_size;
1850 int do_telnetopt;
1851 int do_nodelay;
1852 int is_unix;
1853 int msgfd;
1854 } TCPCharDriver;
1855
1856 static void tcp_chr_accept(void *opaque);
1857
1858 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1859 {
1860 TCPCharDriver *s = chr->opaque;
1861 if (s->connected) {
1862 return send_all(s->fd, buf, len);
1863 } else {
1864 /* XXX: indicate an error ? */
1865 return len;
1866 }
1867 }
1868
1869 static int tcp_chr_read_poll(void *opaque)
1870 {
1871 CharDriverState *chr = opaque;
1872 TCPCharDriver *s = chr->opaque;
1873 if (!s->connected)
1874 return 0;
1875 s->max_size = qemu_chr_can_read(chr);
1876 return s->max_size;
1877 }
1878
1879 #define IAC 255
1880 #define IAC_BREAK 243
1881 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1882 TCPCharDriver *s,
1883 uint8_t *buf, int *size)
1884 {
1885 /* Handle any telnet client's basic IAC options to satisfy char by
1886 * char mode with no echo. All IAC options will be removed from
1887 * the buf and the do_telnetopt variable will be used to track the
1888 * state of the width of the IAC information.
1889 *
1890 * IAC commands come in sets of 3 bytes with the exception of the
1891 * "IAC BREAK" command and the double IAC.
1892 */
1893
1894 int i;
1895 int j = 0;
1896
1897 for (i = 0; i < *size; i++) {
1898 if (s->do_telnetopt > 1) {
1899 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1900 /* Double IAC means send an IAC */
1901 if (j != i)
1902 buf[j] = buf[i];
1903 j++;
1904 s->do_telnetopt = 1;
1905 } else {
1906 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1907 /* Handle IAC break commands by sending a serial break */
1908 qemu_chr_event(chr, CHR_EVENT_BREAK);
1909 s->do_telnetopt++;
1910 }
1911 s->do_telnetopt++;
1912 }
1913 if (s->do_telnetopt >= 4) {
1914 s->do_telnetopt = 1;
1915 }
1916 } else {
1917 if ((unsigned char)buf[i] == IAC) {
1918 s->do_telnetopt = 2;
1919 } else {
1920 if (j != i)
1921 buf[j] = buf[i];
1922 j++;
1923 }
1924 }
1925 }
1926 *size = j;
1927 }
1928
1929 static int tcp_get_msgfd(CharDriverState *chr)
1930 {
1931 TCPCharDriver *s = chr->opaque;
1932
1933 return s->msgfd;
1934 }
1935
1936 #ifndef _WIN32
1937 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1938 {
1939 TCPCharDriver *s = chr->opaque;
1940 struct cmsghdr *cmsg;
1941
1942 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1943 int fd;
1944
1945 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
1946 cmsg->cmsg_level != SOL_SOCKET ||
1947 cmsg->cmsg_type != SCM_RIGHTS)
1948 continue;
1949
1950 fd = *((int *)CMSG_DATA(cmsg));
1951 if (fd < 0)
1952 continue;
1953
1954 if (s->msgfd != -1)
1955 close(s->msgfd);
1956 s->msgfd = fd;
1957 }
1958 }
1959
1960 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1961 {
1962 TCPCharDriver *s = chr->opaque;
1963 struct msghdr msg = { NULL, };
1964 struct iovec iov[1];
1965 union {
1966 struct cmsghdr cmsg;
1967 char control[CMSG_SPACE(sizeof(int))];
1968 } msg_control;
1969 ssize_t ret;
1970
1971 iov[0].iov_base = buf;
1972 iov[0].iov_len = len;
1973
1974 msg.msg_iov = iov;
1975 msg.msg_iovlen = 1;
1976 msg.msg_control = &msg_control;
1977 msg.msg_controllen = sizeof(msg_control);
1978
1979 ret = recvmsg(s->fd, &msg, 0);
1980 if (ret > 0 && s->is_unix)
1981 unix_process_msgfd(chr, &msg);
1982
1983 return ret;
1984 }
1985 #else
1986 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1987 {
1988 TCPCharDriver *s = chr->opaque;
1989 return recv(s->fd, buf, len, 0);
1990 }
1991 #endif
1992
1993 static void tcp_chr_read(void *opaque)
1994 {
1995 CharDriverState *chr = opaque;
1996 TCPCharDriver *s = chr->opaque;
1997 uint8_t buf[1024];
1998 int len, size;
1999
2000 if (!s->connected || s->max_size <= 0)
2001 return;
2002 len = sizeof(buf);
2003 if (len > s->max_size)
2004 len = s->max_size;
2005 size = tcp_chr_recv(chr, (void *)buf, len);
2006 if (size == 0) {
2007 /* connection closed */
2008 s->connected = 0;
2009 if (s->listen_fd >= 0) {
2010 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2011 }
2012 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2013 closesocket(s->fd);
2014 s->fd = -1;
2015 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2016 } else if (size > 0) {
2017 if (s->do_telnetopt)
2018 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2019 if (size > 0)
2020 qemu_chr_read(chr, buf, size);
2021 if (s->msgfd != -1) {
2022 close(s->msgfd);
2023 s->msgfd = -1;
2024 }
2025 }
2026 }
2027
2028 static void tcp_chr_connect(void *opaque)
2029 {
2030 CharDriverState *chr = opaque;
2031 TCPCharDriver *s = chr->opaque;
2032
2033 s->connected = 1;
2034 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2035 tcp_chr_read, NULL, chr);
2036 qemu_chr_reset(chr);
2037 }
2038
2039 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2040 static void tcp_chr_telnet_init(int fd)
2041 {
2042 char buf[3];
2043 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2044 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2045 send(fd, (char *)buf, 3, 0);
2046 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2047 send(fd, (char *)buf, 3, 0);
2048 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2049 send(fd, (char *)buf, 3, 0);
2050 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2051 send(fd, (char *)buf, 3, 0);
2052 }
2053
2054 static void socket_set_nodelay(int fd)
2055 {
2056 int val = 1;
2057 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2058 }
2059
2060 static void tcp_chr_accept(void *opaque)
2061 {
2062 CharDriverState *chr = opaque;
2063 TCPCharDriver *s = chr->opaque;
2064 struct sockaddr_in saddr;
2065 #ifndef _WIN32
2066 struct sockaddr_un uaddr;
2067 #endif
2068 struct sockaddr *addr;
2069 socklen_t len;
2070 int fd;
2071
2072 for(;;) {
2073 #ifndef _WIN32
2074 if (s->is_unix) {
2075 len = sizeof(uaddr);
2076 addr = (struct sockaddr *)&uaddr;
2077 } else
2078 #endif
2079 {
2080 len = sizeof(saddr);
2081 addr = (struct sockaddr *)&saddr;
2082 }
2083 fd = accept(s->listen_fd, addr, &len);
2084 if (fd < 0 && errno != EINTR) {
2085 return;
2086 } else if (fd >= 0) {
2087 if (s->do_telnetopt)
2088 tcp_chr_telnet_init(fd);
2089 break;
2090 }
2091 }
2092 socket_set_nonblock(fd);
2093 if (s->do_nodelay)
2094 socket_set_nodelay(fd);
2095 s->fd = fd;
2096 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2097 tcp_chr_connect(chr);
2098 }
2099
2100 static void tcp_chr_close(CharDriverState *chr)
2101 {
2102 TCPCharDriver *s = chr->opaque;
2103 if (s->fd >= 0) {
2104 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2105 closesocket(s->fd);
2106 }
2107 if (s->listen_fd >= 0) {
2108 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2109 closesocket(s->listen_fd);
2110 }
2111 qemu_free(s);
2112 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2113 }
2114
2115 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2116 {
2117 CharDriverState *chr = NULL;
2118 TCPCharDriver *s = NULL;
2119 int fd = -1;
2120 int is_listen;
2121 int is_waitconnect;
2122 int do_nodelay;
2123 int is_unix;
2124 int is_telnet;
2125
2126 is_listen = qemu_opt_get_bool(opts, "server", 0);
2127 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2128 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2129 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2130 is_unix = qemu_opt_get(opts, "path") != NULL;
2131 if (!is_listen)
2132 is_waitconnect = 0;
2133
2134 chr = qemu_mallocz(sizeof(CharDriverState));
2135 s = qemu_mallocz(sizeof(TCPCharDriver));
2136
2137 if (is_unix) {
2138 if (is_listen) {
2139 fd = unix_listen_opts(opts);
2140 } else {
2141 fd = unix_connect_opts(opts);
2142 }
2143 } else {
2144 if (is_listen) {
2145 fd = inet_listen_opts(opts, 0);
2146 } else {
2147 fd = inet_connect_opts(opts);
2148 }
2149 }
2150 if (fd < 0)
2151 goto fail;
2152
2153 if (!is_waitconnect)
2154 socket_set_nonblock(fd);
2155
2156 s->connected = 0;
2157 s->fd = -1;
2158 s->listen_fd = -1;
2159 s->msgfd = -1;
2160 s->is_unix = is_unix;
2161 s->do_nodelay = do_nodelay && !is_unix;
2162
2163 chr->opaque = s;
2164 chr->chr_write = tcp_chr_write;
2165 chr->chr_close = tcp_chr_close;
2166 chr->get_msgfd = tcp_get_msgfd;
2167
2168 if (is_listen) {
2169 s->listen_fd = fd;
2170 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2171 if (is_telnet)
2172 s->do_telnetopt = 1;
2173
2174 } else {
2175 s->connected = 1;
2176 s->fd = fd;
2177 socket_set_nodelay(fd);
2178 tcp_chr_connect(chr);
2179 }
2180
2181 /* for "info chardev" monitor command */
2182 chr->filename = qemu_malloc(256);
2183 if (is_unix) {
2184 snprintf(chr->filename, 256, "unix:%s%s",
2185 qemu_opt_get(opts, "path"),
2186 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2187 } else if (is_telnet) {
2188 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2189 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2190 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2191 } else {
2192 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2193 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2194 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2195 }
2196
2197 if (is_listen && is_waitconnect) {
2198 printf("QEMU waiting for connection on: %s\n",
2199 chr->filename);
2200 tcp_chr_accept(chr);
2201 socket_set_nonblock(s->listen_fd);
2202 }
2203 return chr;
2204
2205 fail:
2206 if (fd >= 0)
2207 closesocket(fd);
2208 qemu_free(s);
2209 qemu_free(chr);
2210 return NULL;
2211 }
2212
2213 static QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2214 {
2215 char host[65], port[33], width[8], height[8];
2216 int pos;
2217 const char *p;
2218 QemuOpts *opts;
2219
2220 opts = qemu_opts_create(&qemu_chardev_opts, label, 1);
2221 if (NULL == opts)
2222 return NULL;
2223
2224 if (strstart(filename, "mon:", &p)) {
2225 filename = p;
2226 qemu_opt_set(opts, "mux", "on");
2227 }
2228
2229 if (strcmp(filename, "null") == 0 ||
2230 strcmp(filename, "pty") == 0 ||
2231 strcmp(filename, "msmouse") == 0 ||
2232 strcmp(filename, "braille") == 0 ||
2233 strcmp(filename, "stdio") == 0) {
2234 qemu_opt_set(opts, "backend", filename);
2235 return opts;
2236 }
2237 if (strstart(filename, "vc", &p)) {
2238 qemu_opt_set(opts, "backend", "vc");
2239 if (*p == ':') {
2240 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2241 /* pixels */
2242 qemu_opt_set(opts, "width", width);
2243 qemu_opt_set(opts, "height", height);
2244 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2245 /* chars */
2246 qemu_opt_set(opts, "cols", width);
2247 qemu_opt_set(opts, "rows", height);
2248 } else {
2249 goto fail;
2250 }
2251 }
2252 return opts;
2253 }
2254 if (strcmp(filename, "con:") == 0) {
2255 qemu_opt_set(opts, "backend", "console");
2256 return opts;
2257 }
2258 if (strstart(filename, "COM", NULL)) {
2259 qemu_opt_set(opts, "backend", "serial");
2260 qemu_opt_set(opts, "path", filename);
2261 return opts;
2262 }
2263 if (strstart(filename, "file:", &p)) {
2264 qemu_opt_set(opts, "backend", "file");
2265 qemu_opt_set(opts, "path", p);
2266 return opts;
2267 }
2268 if (strstart(filename, "pipe:", &p)) {
2269 qemu_opt_set(opts, "backend", "pipe");
2270 qemu_opt_set(opts, "path", p);
2271 return opts;
2272 }
2273 if (strstart(filename, "tcp:", &p) ||
2274 strstart(filename, "telnet:", &p)) {
2275 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2276 host[0] = 0;
2277 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2278 goto fail;
2279 }
2280 qemu_opt_set(opts, "backend", "socket");
2281 qemu_opt_set(opts, "host", host);
2282 qemu_opt_set(opts, "port", port);
2283 if (p[pos] == ',') {
2284 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2285 goto fail;
2286 }
2287 if (strstart(filename, "telnet:", &p))
2288 qemu_opt_set(opts, "telnet", "on");
2289 return opts;
2290 }
2291 if (strstart(filename, "udp:", &p)) {
2292 qemu_opt_set(opts, "backend", "udp");
2293 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2294 host[0] = 0;
2295 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2296 fprintf(stderr, "udp #1\n");
2297 goto fail;
2298 }
2299 }
2300 qemu_opt_set(opts, "host", host);
2301 qemu_opt_set(opts, "port", port);
2302 if (p[pos] == '@') {
2303 p += pos + 1;
2304 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2305 host[0] = 0;
2306 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2307 fprintf(stderr, "udp #2\n");
2308 goto fail;
2309 }
2310 }
2311 qemu_opt_set(opts, "localaddr", host);
2312 qemu_opt_set(opts, "localport", port);
2313 }
2314 return opts;
2315 }
2316 if (strstart(filename, "unix:", &p)) {
2317 qemu_opt_set(opts, "backend", "socket");
2318 if (qemu_opts_do_parse(opts, p, "path") != 0)
2319 goto fail;
2320 return opts;
2321 }
2322 if (strstart(filename, "/dev/parport", NULL) ||
2323 strstart(filename, "/dev/ppi", NULL)) {
2324 qemu_opt_set(opts, "backend", "parport");
2325 qemu_opt_set(opts, "path", filename);
2326 return opts;
2327 }
2328 if (strstart(filename, "/dev/", NULL)) {
2329 qemu_opt_set(opts, "backend", "tty");
2330 qemu_opt_set(opts, "path", filename);
2331 return opts;
2332 }
2333
2334 fail:
2335 fprintf(stderr, "%s: fail on \"%s\"\n", __FUNCTION__, filename);
2336 qemu_opts_del(opts);
2337 return NULL;
2338 }
2339
2340 static const struct {
2341 const char *name;
2342 CharDriverState *(*open)(QemuOpts *opts);
2343 } backend_table[] = {
2344 { .name = "null", .open = qemu_chr_open_null },
2345 { .name = "socket", .open = qemu_chr_open_socket },
2346 { .name = "udp", .open = qemu_chr_open_udp },
2347 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2348 { .name = "vc", .open = text_console_init },
2349 #ifdef _WIN32
2350 { .name = "file", .open = qemu_chr_open_win_file_out },
2351 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2352 { .name = "console", .open = qemu_chr_open_win_con },
2353 { .name = "serial", .open = qemu_chr_open_win },
2354 #else
2355 { .name = "file", .open = qemu_chr_open_file_out },
2356 { .name = "pipe", .open = qemu_chr_open_pipe },
2357 { .name = "pty", .open = qemu_chr_open_pty },
2358 { .name = "stdio", .open = qemu_chr_open_stdio },
2359 #endif
2360 #ifdef CONFIG_BRLAPI
2361 { .name = "braille", .open = chr_baum_init },
2362 #endif
2363 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2364 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
2365 { .name = "tty", .open = qemu_chr_open_tty },
2366 #endif
2367 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__)
2368 { .name = "parport", .open = qemu_chr_open_pp },
2369 #endif
2370 };
2371
2372 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2373 void (*init)(struct CharDriverState *s))
2374 {
2375 CharDriverState *chr;
2376 int i;
2377
2378 if (qemu_opts_id(opts) == NULL) {
2379 fprintf(stderr, "chardev: no id specified\n");
2380 return NULL;
2381 }
2382
2383 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2384 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2385 break;
2386 }
2387 if (i == ARRAY_SIZE(backend_table)) {
2388 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2389 qemu_opt_get(opts, "backend"));
2390 return NULL;
2391 }
2392
2393 chr = backend_table[i].open(opts);
2394 if (!chr) {
2395 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2396 qemu_opt_get(opts, "backend"));
2397 return NULL;
2398 }
2399
2400 if (!chr->filename)
2401 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2402 chr->init = init;
2403 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2404
2405 if (qemu_opt_get_bool(opts, "mux", 0)) {
2406 CharDriverState *base = chr;
2407 int len = strlen(qemu_opts_id(opts)) + 6;
2408 base->label = qemu_malloc(len);
2409 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2410 chr = qemu_chr_open_mux(base);
2411 chr->filename = base->filename;
2412 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2413 }
2414 chr->label = qemu_strdup(qemu_opts_id(opts));
2415 return chr;
2416 }
2417
2418 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2419 {
2420 const char *p;
2421 CharDriverState *chr;
2422 QemuOpts *opts;
2423
2424 if (strstart(filename, "chardev:", &p)) {
2425 return qemu_chr_find(p);
2426 }
2427
2428 opts = qemu_chr_parse_compat(label, filename);
2429 if (!opts)
2430 return NULL;
2431
2432 chr = qemu_chr_open_opts(opts, init);
2433 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2434 monitor_init(chr, MONITOR_USE_READLINE);
2435 }
2436 return chr;
2437 }
2438
2439 void qemu_chr_close(CharDriverState *chr)
2440 {
2441 QTAILQ_REMOVE(&chardevs, chr, next);
2442 if (chr->chr_close)
2443 chr->chr_close(chr);
2444 qemu_free(chr->filename);
2445 qemu_free(chr->label);
2446 qemu_free(chr);
2447 }
2448
2449 void qemu_chr_info(Monitor *mon)
2450 {
2451 CharDriverState *chr;
2452
2453 QTAILQ_FOREACH(chr, &chardevs, next) {
2454 monitor_printf(mon, "%s: filename=%s\n", chr->label, chr->filename);
2455 }
2456 }
2457
2458 CharDriverState *qemu_chr_find(const char *name)
2459 {
2460 CharDriverState *chr;
2461
2462 QTAILQ_FOREACH(chr, &chardevs, next) {
2463 if (strcmp(chr->label, name) != 0)
2464 continue;
2465 return chr;
2466 }
2467 return NULL;
2468 }
Anthony Liguori's QEMU queue