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vga: Respect Line Compare Register in text modes
[qemu/lumag.git] / qemu-char.c
blob40bd7e8a697bdb52a82af40557930865becc9465
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 #include <arpa/inet.h>
55 #include <dirent.h>
56 #include <netdb.h>
57 #include <sys/select.h>
58 #ifdef CONFIG_BSD
59 #include <sys/stat.h>
60 #ifdef __FreeBSD__
61 #include <libutil.h>
62 #include <dev/ppbus/ppi.h>
63 #include <dev/ppbus/ppbconf.h>
64 #elif defined(__DragonFly__)
65 #include <libutil.h>
66 #include <dev/misc/ppi/ppi.h>
67 #include <bus/ppbus/ppbconf.h>
68 #else
69 #include <util.h>
70 #endif
71 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
72 #include <freebsd/stdlib.h>
73 #else
74 #ifdef __linux__
75 #include <pty.h>
76
77 #include <linux/ppdev.h>
78 #include <linux/parport.h>
79 #endif
80 #ifdef __sun__
81 #include <sys/stat.h>
82 #include <sys/ethernet.h>
83 #include <sys/sockio.h>
84 #include <netinet/arp.h>
85 #include <netinet/in.h>
86 #include <netinet/in_systm.h>
87 #include <netinet/ip.h>
88 #include <netinet/ip_icmp.h> // must come after ip.h
89 #include <netinet/udp.h>
90 #include <netinet/tcp.h>
91 #include <net/if.h>
92 #include <syslog.h>
93 #include <stropts.h>
94 #endif
95 #endif
96 #endif
97
98 #include "qemu_socket.h"
99
100 /***********************************************************/
101 /* character device */
102
103 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
104 QTAILQ_HEAD_INITIALIZER(chardevs);
105
106 static void qemu_chr_event(CharDriverState *s, int event)
107 {
108 if (!s->chr_event)
109 return;
110 s->chr_event(s->handler_opaque, event);
111 }
112
113 static void qemu_chr_reset_bh(void *opaque)
114 {
115 CharDriverState *s = opaque;
116 qemu_chr_event(s, CHR_EVENT_OPENED);
117 qemu_bh_delete(s->bh);
118 s->bh = NULL;
119 }
120
121 void qemu_chr_reset(CharDriverState *s)
122 {
123 if (s->bh == NULL) {
124 s->bh = qemu_bh_new(qemu_chr_reset_bh, s);
125 qemu_bh_schedule(s->bh);
126 }
127 }
128
129 void qemu_chr_initial_reset(void)
130 {
131 CharDriverState *chr;
132
133 QTAILQ_FOREACH(chr, &chardevs, next) {
134 qemu_chr_reset(chr);
135 }
136 }
137
138 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
139 {
140 return s->chr_write(s, buf, len);
141 }
142
143 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
144 {
145 if (!s->chr_ioctl)
146 return -ENOTSUP;
147 return s->chr_ioctl(s, cmd, arg);
148 }
149
150 int qemu_chr_can_read(CharDriverState *s)
151 {
152 if (!s->chr_can_read)
153 return 0;
154 return s->chr_can_read(s->handler_opaque);
155 }
156
157 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
158 {
159 s->chr_read(s->handler_opaque, buf, len);
160 }
161
162 int qemu_chr_get_msgfd(CharDriverState *s)
163 {
164 return s->get_msgfd ? s->get_msgfd(s) : -1;
165 }
166
167 void qemu_chr_accept_input(CharDriverState *s)
168 {
169 if (s->chr_accept_input)
170 s->chr_accept_input(s);
171 }
172
173 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
174 {
175 char buf[4096];
176 va_list ap;
177 va_start(ap, fmt);
178 vsnprintf(buf, sizeof(buf), fmt, ap);
179 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
180 va_end(ap);
181 }
182
183 void qemu_chr_send_event(CharDriverState *s, int event)
184 {
185 if (s->chr_send_event)
186 s->chr_send_event(s, event);
187 }
188
189 void qemu_chr_add_handlers(CharDriverState *s,
190 IOCanRWHandler *fd_can_read,
191 IOReadHandler *fd_read,
192 IOEventHandler *fd_event,
193 void *opaque)
194 {
195 s->chr_can_read = fd_can_read;
196 s->chr_read = fd_read;
197 s->chr_event = fd_event;
198 s->handler_opaque = opaque;
199 if (s->chr_update_read_handler)
200 s->chr_update_read_handler(s);
201 }
202
203 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
204 {
205 return len;
206 }
207
208 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
209 {
210 CharDriverState *chr;
211
212 chr = qemu_mallocz(sizeof(CharDriverState));
213 chr->chr_write = null_chr_write;
214 return chr;
215 }
216
217 /* MUX driver for serial I/O splitting */
218 #define MAX_MUX 4
219 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
220 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
221 typedef struct {
222 IOCanRWHandler *chr_can_read[MAX_MUX];
223 IOReadHandler *chr_read[MAX_MUX];
224 IOEventHandler *chr_event[MAX_MUX];
225 void *ext_opaque[MAX_MUX];
226 CharDriverState *drv;
227 int focus;
228 int mux_cnt;
229 int term_got_escape;
230 int max_size;
231 /* Intermediate input buffer allows to catch escape sequences even if the
232 currently active device is not accepting any input - but only until it
233 is full as well. */
234 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
235 int prod[MAX_MUX];
236 int cons[MAX_MUX];
237 int timestamps;
238 int linestart;
239 int64_t timestamps_start;
240 } MuxDriver;
241
242
243 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
244 {
245 MuxDriver *d = chr->opaque;
246 int ret;
247 if (!d->timestamps) {
248 ret = d->drv->chr_write(d->drv, buf, len);
249 } else {
250 int i;
251
252 ret = 0;
253 for (i = 0; i < len; i++) {
254 if (d->linestart) {
255 char buf1[64];
256 int64_t ti;
257 int secs;
258
259 ti = qemu_get_clock(rt_clock);
260 if (d->timestamps_start == -1)
261 d->timestamps_start = ti;
262 ti -= d->timestamps_start;
263 secs = ti / 1000;
264 snprintf(buf1, sizeof(buf1),
265 "[%02d:%02d:%02d.%03d] ",
266 secs / 3600,
267 (secs / 60) % 60,
268 secs % 60,
269 (int)(ti % 1000));
270 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
271 d->linestart = 0;
272 }
273 ret += d->drv->chr_write(d->drv, buf+i, 1);
274 if (buf[i] == '\n') {
275 d->linestart = 1;
276 }
277 }
278 }
279 return ret;
280 }
281
282 static const char * const mux_help[] = {
283 "% h print this help\n\r",
284 "% x exit emulator\n\r",
285 "% s save disk data back to file (if -snapshot)\n\r",
286 "% t toggle console timestamps\n\r"
287 "% b send break (magic sysrq)\n\r",
288 "% c switch between console and monitor\n\r",
289 "% % sends %\n\r",
290 NULL
291 };
292
293 int term_escape_char = 0x01; /* ctrl-a is used for escape */
294 static void mux_print_help(CharDriverState *chr)
295 {
296 int i, j;
297 char ebuf[15] = "Escape-Char";
298 char cbuf[50] = "\n\r";
299
300 if (term_escape_char > 0 && term_escape_char < 26) {
301 snprintf(cbuf, sizeof(cbuf), "\n\r");
302 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
303 } else {
304 snprintf(cbuf, sizeof(cbuf),
305 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
306 term_escape_char);
307 }
308 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
309 for (i = 0; mux_help[i] != NULL; i++) {
310 for (j=0; mux_help[i][j] != '\0'; j++) {
311 if (mux_help[i][j] == '%')
312 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
313 else
314 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
315 }
316 }
317 }
318
319 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
320 {
321 if (d->chr_event[mux_nr])
322 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
323 }
324
325 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
326 {
327 if (d->term_got_escape) {
328 d->term_got_escape = 0;
329 if (ch == term_escape_char)
330 goto send_char;
331 switch(ch) {
332 case '?':
333 case 'h':
334 mux_print_help(chr);
335 break;
336 case 'x':
337 {
338 const char *term = "QEMU: Terminated\n\r";
339 chr->chr_write(chr,(uint8_t *)term,strlen(term));
340 exit(0);
341 break;
342 }
343 case 's':
344 {
345 DriveInfo *dinfo;
346 QTAILQ_FOREACH(dinfo, &drives, next) {
347 bdrv_commit(dinfo->bdrv);
348 }
349 }
350 break;
351 case 'b':
352 qemu_chr_event(chr, CHR_EVENT_BREAK);
353 break;
354 case 'c':
355 /* Switch to the next registered device */
356 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
357 d->focus++;
358 if (d->focus >= d->mux_cnt)
359 d->focus = 0;
360 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
361 break;
362 case 't':
363 d->timestamps = !d->timestamps;
364 d->timestamps_start = -1;
365 d->linestart = 0;
366 break;
367 }
368 } else if (ch == term_escape_char) {
369 d->term_got_escape = 1;
370 } else {
371 send_char:
372 return 1;
373 }
374 return 0;
375 }
376
377 static void mux_chr_accept_input(CharDriverState *chr)
378 {
379 MuxDriver *d = chr->opaque;
380 int m = d->focus;
381
382 while (d->prod[m] != d->cons[m] &&
383 d->chr_can_read[m] &&
384 d->chr_can_read[m](d->ext_opaque[m])) {
385 d->chr_read[m](d->ext_opaque[m],
386 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
387 }
388 }
389
390 static int mux_chr_can_read(void *opaque)
391 {
392 CharDriverState *chr = opaque;
393 MuxDriver *d = chr->opaque;
394 int m = d->focus;
395
396 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
397 return 1;
398 if (d->chr_can_read[m])
399 return d->chr_can_read[m](d->ext_opaque[m]);
400 return 0;
401 }
402
403 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
404 {
405 CharDriverState *chr = opaque;
406 MuxDriver *d = chr->opaque;
407 int m = d->focus;
408 int i;
409
410 mux_chr_accept_input (opaque);
411
412 for(i = 0; i < size; i++)
413 if (mux_proc_byte(chr, d, buf[i])) {
414 if (d->prod[m] == d->cons[m] &&
415 d->chr_can_read[m] &&
416 d->chr_can_read[m](d->ext_opaque[m]))
417 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
418 else
419 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
420 }
421 }
422
423 static void mux_chr_event(void *opaque, int event)
424 {
425 CharDriverState *chr = opaque;
426 MuxDriver *d = chr->opaque;
427 int i;
428
429 /* Send the event to all registered listeners */
430 for (i = 0; i < d->mux_cnt; i++)
431 mux_chr_send_event(d, i, event);
432 }
433
434 static void mux_chr_update_read_handler(CharDriverState *chr)
435 {
436 MuxDriver *d = chr->opaque;
437
438 if (d->mux_cnt >= MAX_MUX) {
439 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
440 return;
441 }
442 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
443 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
444 d->chr_read[d->mux_cnt] = chr->chr_read;
445 d->chr_event[d->mux_cnt] = chr->chr_event;
446 /* Fix up the real driver with mux routines */
447 if (d->mux_cnt == 0) {
448 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
449 mux_chr_event, chr);
450 }
451 if (d->focus != -1) {
452 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
453 }
454 d->focus = d->mux_cnt;
455 d->mux_cnt++;
456 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
457 }
458
459 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
460 {
461 CharDriverState *chr;
462 MuxDriver *d;
463
464 chr = qemu_mallocz(sizeof(CharDriverState));
465 d = qemu_mallocz(sizeof(MuxDriver));
466
467 chr->opaque = d;
468 d->drv = drv;
469 d->focus = -1;
470 chr->chr_write = mux_chr_write;
471 chr->chr_update_read_handler = mux_chr_update_read_handler;
472 chr->chr_accept_input = mux_chr_accept_input;
473 return chr;
474 }
475
476
477 #ifdef _WIN32
478 int send_all(int fd, const void *buf, int len1)
479 {
480 int ret, len;
481
482 len = len1;
483 while (len > 0) {
484 ret = send(fd, buf, len, 0);
485 if (ret < 0) {
486 errno = WSAGetLastError();
487 if (errno != WSAEWOULDBLOCK) {
488 return -1;
489 }
490 } else if (ret == 0) {
491 break;
492 } else {
493 buf += ret;
494 len -= ret;
495 }
496 }
497 return len1 - len;
498 }
499
500 #else
501
502 static int unix_write(int fd, const uint8_t *buf, int len1)
503 {
504 int ret, len;
505
506 len = len1;
507 while (len > 0) {
508 ret = write(fd, buf, len);
509 if (ret < 0) {
510 if (errno != EINTR && errno != EAGAIN)
511 return -1;
512 } else if (ret == 0) {
513 break;
514 } else {
515 buf += ret;
516 len -= ret;
517 }
518 }
519 return len1 - len;
520 }
521
522 int send_all(int fd, const void *buf, int len1)
523 {
524 return unix_write(fd, buf, len1);
525 }
526 #endif /* !_WIN32 */
527
528 #ifndef _WIN32
529
530 typedef struct {
531 int fd_in, fd_out;
532 int max_size;
533 } FDCharDriver;
534
535 #define STDIO_MAX_CLIENTS 1
536 static int stdio_nb_clients = 0;
537
538 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
539 {
540 FDCharDriver *s = chr->opaque;
541 return send_all(s->fd_out, buf, len);
542 }
543
544 static int fd_chr_read_poll(void *opaque)
545 {
546 CharDriverState *chr = opaque;
547 FDCharDriver *s = chr->opaque;
548
549 s->max_size = qemu_chr_can_read(chr);
550 return s->max_size;
551 }
552
553 static void fd_chr_read(void *opaque)
554 {
555 CharDriverState *chr = opaque;
556 FDCharDriver *s = chr->opaque;
557 int size, len;
558 uint8_t buf[1024];
559
560 len = sizeof(buf);
561 if (len > s->max_size)
562 len = s->max_size;
563 if (len == 0)
564 return;
565 size = read(s->fd_in, buf, len);
566 if (size == 0) {
567 /* FD has been closed. Remove it from the active list. */
568 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
569 qemu_chr_event(chr, CHR_EVENT_CLOSED);
570 return;
571 }
572 if (size > 0) {
573 qemu_chr_read(chr, buf, size);
574 }
575 }
576
577 static void fd_chr_update_read_handler(CharDriverState *chr)
578 {
579 FDCharDriver *s = chr->opaque;
580
581 if (s->fd_in >= 0) {
582 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
583 } else {
584 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
585 fd_chr_read, NULL, chr);
586 }
587 }
588 }
589
590 static void fd_chr_close(struct CharDriverState *chr)
591 {
592 FDCharDriver *s = chr->opaque;
593
594 if (s->fd_in >= 0) {
595 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
596 } else {
597 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
598 }
599 }
600
601 qemu_free(s);
602 qemu_chr_event(chr, CHR_EVENT_CLOSED);
603 }
604
605 /* open a character device to a unix fd */
606 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
607 {
608 CharDriverState *chr;
609 FDCharDriver *s;
610
611 chr = qemu_mallocz(sizeof(CharDriverState));
612 s = qemu_mallocz(sizeof(FDCharDriver));
613 s->fd_in = fd_in;
614 s->fd_out = fd_out;
615 chr->opaque = s;
616 chr->chr_write = fd_chr_write;
617 chr->chr_update_read_handler = fd_chr_update_read_handler;
618 chr->chr_close = fd_chr_close;
619
620 qemu_chr_reset(chr);
621
622 return chr;
623 }
624
625 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
626 {
627 int fd_out;
628
629 TFR(fd_out = open(qemu_opt_get(opts, "path"),
630 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
631 if (fd_out < 0)
632 return NULL;
633 return qemu_chr_open_fd(-1, fd_out);
634 }
635
636 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
637 {
638 int fd_in, fd_out;
639 char filename_in[256], filename_out[256];
640 const char *filename = qemu_opt_get(opts, "path");
641
642 if (filename == NULL) {
643 fprintf(stderr, "chardev: pipe: no filename given\n");
644 return NULL;
645 }
646
647 snprintf(filename_in, 256, "%s.in", filename);
648 snprintf(filename_out, 256, "%s.out", filename);
649 TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
650 TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
651 if (fd_in < 0 || fd_out < 0) {
652 if (fd_in >= 0)
653 close(fd_in);
654 if (fd_out >= 0)
655 close(fd_out);
656 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
657 if (fd_in < 0)
658 return NULL;
659 }
660 return qemu_chr_open_fd(fd_in, fd_out);
661 }
662
663
664 /* for STDIO, we handle the case where several clients use it
665 (nographic mode) */
666
667 #define TERM_FIFO_MAX_SIZE 1
668
669 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
670 static int term_fifo_size;
671
672 static int stdio_read_poll(void *opaque)
673 {
674 CharDriverState *chr = opaque;
675
676 /* try to flush the queue if needed */
677 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
678 qemu_chr_read(chr, term_fifo, 1);
679 term_fifo_size = 0;
680 }
681 /* see if we can absorb more chars */
682 if (term_fifo_size == 0)
683 return 1;
684 else
685 return 0;
686 }
687
688 static void stdio_read(void *opaque)
689 {
690 int size;
691 uint8_t buf[1];
692 CharDriverState *chr = opaque;
693
694 size = read(0, buf, 1);
695 if (size == 0) {
696 /* stdin has been closed. Remove it from the active list. */
697 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
698 qemu_chr_event(chr, CHR_EVENT_CLOSED);
699 return;
700 }
701 if (size > 0) {
702 if (qemu_chr_can_read(chr) > 0) {
703 qemu_chr_read(chr, buf, 1);
704 } else if (term_fifo_size == 0) {
705 term_fifo[term_fifo_size++] = buf[0];
706 }
707 }
708 }
709
710 /* init terminal so that we can grab keys */
711 static struct termios oldtty;
712 static int old_fd0_flags;
713 static int term_atexit_done;
714
715 static void term_exit(void)
716 {
717 tcsetattr (0, TCSANOW, &oldtty);
718 fcntl(0, F_SETFL, old_fd0_flags);
719 }
720
721 static void term_init(QemuOpts *opts)
722 {
723 struct termios tty;
724
725 tcgetattr (0, &tty);
726 oldtty = tty;
727 old_fd0_flags = fcntl(0, F_GETFL);
728
729 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
730 |INLCR|IGNCR|ICRNL|IXON);
731 tty.c_oflag |= OPOST;
732 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
733 /* if graphical mode, we allow Ctrl-C handling */
734 if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
735 tty.c_lflag &= ~ISIG;
736 tty.c_cflag &= ~(CSIZE|PARENB);
737 tty.c_cflag |= CS8;
738 tty.c_cc[VMIN] = 1;
739 tty.c_cc[VTIME] = 0;
740
741 tcsetattr (0, TCSANOW, &tty);
742
743 if (!term_atexit_done++)
744 atexit(term_exit);
745
746 fcntl(0, F_SETFL, O_NONBLOCK);
747 }
748
749 static void qemu_chr_close_stdio(struct CharDriverState *chr)
750 {
751 term_exit();
752 stdio_nb_clients--;
753 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
754 fd_chr_close(chr);
755 }
756
757 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
758 {
759 CharDriverState *chr;
760
761 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
762 return NULL;
763 chr = qemu_chr_open_fd(0, 1);
764 chr->chr_close = qemu_chr_close_stdio;
765 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
766 stdio_nb_clients++;
767 term_init(opts);
768
769 return chr;
770 }
771
772 #ifdef __sun__
773 /* Once Solaris has openpty(), this is going to be removed. */
774 static int openpty(int *amaster, int *aslave, char *name,
775 struct termios *termp, struct winsize *winp)
776 {
777 const char *slave;
778 int mfd = -1, sfd = -1;
779
780 *amaster = *aslave = -1;
781
782 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
783 if (mfd < 0)
784 goto err;
785
786 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
787 goto err;
788
789 if ((slave = ptsname(mfd)) == NULL)
790 goto err;
791
792 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
793 goto err;
794
795 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
796 (termp != NULL && tcgetattr(sfd, termp) < 0))
797 goto err;
798
799 if (amaster)
800 *amaster = mfd;
801 if (aslave)
802 *aslave = sfd;
803 if (winp)
804 ioctl(sfd, TIOCSWINSZ, winp);
805
806 return 0;
807
808 err:
809 if (sfd != -1)
810 close(sfd);
811 close(mfd);
812 return -1;
813 }
814
815 static void cfmakeraw (struct termios *termios_p)
816 {
817 termios_p->c_iflag &=
818 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
819 termios_p->c_oflag &= ~OPOST;
820 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
821 termios_p->c_cflag &= ~(CSIZE|PARENB);
822 termios_p->c_cflag |= CS8;
823
824 termios_p->c_cc[VMIN] = 0;
825 termios_p->c_cc[VTIME] = 0;
826 }
827 #endif
828
829 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
830 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
831
832 typedef struct {
833 int fd;
834 int connected;
835 int polling;
836 int read_bytes;
837 QEMUTimer *timer;
838 } PtyCharDriver;
839
840 static void pty_chr_update_read_handler(CharDriverState *chr);
841 static void pty_chr_state(CharDriverState *chr, int connected);
842
843 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
844 {
845 PtyCharDriver *s = chr->opaque;
846
847 if (!s->connected) {
848 /* guest sends data, check for (re-)connect */
849 pty_chr_update_read_handler(chr);
850 return 0;
851 }
852 return send_all(s->fd, buf, len);
853 }
854
855 static int pty_chr_read_poll(void *opaque)
856 {
857 CharDriverState *chr = opaque;
858 PtyCharDriver *s = chr->opaque;
859
860 s->read_bytes = qemu_chr_can_read(chr);
861 return s->read_bytes;
862 }
863
864 static void pty_chr_read(void *opaque)
865 {
866 CharDriverState *chr = opaque;
867 PtyCharDriver *s = chr->opaque;
868 int size, len;
869 uint8_t buf[1024];
870
871 len = sizeof(buf);
872 if (len > s->read_bytes)
873 len = s->read_bytes;
874 if (len == 0)
875 return;
876 size = read(s->fd, buf, len);
877 if ((size == -1 && errno == EIO) ||
878 (size == 0)) {
879 pty_chr_state(chr, 0);
880 return;
881 }
882 if (size > 0) {
883 pty_chr_state(chr, 1);
884 qemu_chr_read(chr, buf, size);
885 }
886 }
887
888 static void pty_chr_update_read_handler(CharDriverState *chr)
889 {
890 PtyCharDriver *s = chr->opaque;
891
892 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
893 pty_chr_read, NULL, chr);
894 s->polling = 1;
895 /*
896 * Short timeout here: just need wait long enougth that qemu makes
897 * it through the poll loop once. When reconnected we want a
898 * short timeout so we notice it almost instantly. Otherwise
899 * read() gives us -EIO instantly, making pty_chr_state() reset the
900 * timeout to the normal (much longer) poll interval before the
901 * timer triggers.
902 */
903 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
904 }
905
906 static void pty_chr_state(CharDriverState *chr, int connected)
907 {
908 PtyCharDriver *s = chr->opaque;
909
910 if (!connected) {
911 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
912 s->connected = 0;
913 s->polling = 0;
914 /* (re-)connect poll interval for idle guests: once per second.
915 * We check more frequently in case the guests sends data to
916 * the virtual device linked to our pty. */
917 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
918 } else {
919 if (!s->connected)
920 qemu_chr_reset(chr);
921 s->connected = 1;
922 }
923 }
924
925 static void pty_chr_timer(void *opaque)
926 {
927 struct CharDriverState *chr = opaque;
928 PtyCharDriver *s = chr->opaque;
929
930 if (s->connected)
931 return;
932 if (s->polling) {
933 /* If we arrive here without polling being cleared due
934 * read returning -EIO, then we are (re-)connected */
935 pty_chr_state(chr, 1);
936 return;
937 }
938
939 /* Next poll ... */
940 pty_chr_update_read_handler(chr);
941 }
942
943 static void pty_chr_close(struct CharDriverState *chr)
944 {
945 PtyCharDriver *s = chr->opaque;
946
947 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
948 close(s->fd);
949 qemu_del_timer(s->timer);
950 qemu_free_timer(s->timer);
951 qemu_free(s);
952 qemu_chr_event(chr, CHR_EVENT_CLOSED);
953 }
954
955 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
956 {
957 CharDriverState *chr;
958 PtyCharDriver *s;
959 struct termios tty;
960 int slave_fd, len;
961 #if defined(__OpenBSD__) || defined(__DragonFly__)
962 char pty_name[PATH_MAX];
963 #define q_ptsname(x) pty_name
964 #else
965 char *pty_name = NULL;
966 #define q_ptsname(x) ptsname(x)
967 #endif
968
969 chr = qemu_mallocz(sizeof(CharDriverState));
970 s = qemu_mallocz(sizeof(PtyCharDriver));
971
972 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
973 return NULL;
974 }
975
976 /* Set raw attributes on the pty. */
977 tcgetattr(slave_fd, &tty);
978 cfmakeraw(&tty);
979 tcsetattr(slave_fd, TCSAFLUSH, &tty);
980 close(slave_fd);
981
982 len = strlen(q_ptsname(s->fd)) + 5;
983 chr->filename = qemu_malloc(len);
984 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
985 qemu_opt_set(opts, "path", q_ptsname(s->fd));
986 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
987
988 chr->opaque = s;
989 chr->chr_write = pty_chr_write;
990 chr->chr_update_read_handler = pty_chr_update_read_handler;
991 chr->chr_close = pty_chr_close;
992
993 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
994
995 return chr;
996 }
997
998 static void tty_serial_init(int fd, int speed,
999 int parity, int data_bits, int stop_bits)
1000 {
1001 struct termios tty;
1002 speed_t spd;
1003
1004 #if 0
1005 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1006 speed, parity, data_bits, stop_bits);
1007 #endif
1008 tcgetattr (fd, &tty);
1009
1010 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1011 speed = speed * 10 / 11;
1012 do {
1013 check_speed(50);
1014 check_speed(75);
1015 check_speed(110);
1016 check_speed(134);
1017 check_speed(150);
1018 check_speed(200);
1019 check_speed(300);
1020 check_speed(600);
1021 check_speed(1200);
1022 check_speed(1800);
1023 check_speed(2400);
1024 check_speed(4800);
1025 check_speed(9600);
1026 check_speed(19200);
1027 check_speed(38400);
1028 /* Non-Posix values follow. They may be unsupported on some systems. */
1029 check_speed(57600);
1030 check_speed(115200);
1031 #ifdef B230400
1032 check_speed(230400);
1033 #endif
1034 #ifdef B460800
1035 check_speed(460800);
1036 #endif
1037 #ifdef B500000
1038 check_speed(500000);
1039 #endif
1040 #ifdef B576000
1041 check_speed(576000);
1042 #endif
1043 #ifdef B921600
1044 check_speed(921600);
1045 #endif
1046 #ifdef B1000000
1047 check_speed(1000000);
1048 #endif
1049 #ifdef B1152000
1050 check_speed(1152000);
1051 #endif
1052 #ifdef B1500000
1053 check_speed(1500000);
1054 #endif
1055 #ifdef B2000000
1056 check_speed(2000000);
1057 #endif
1058 #ifdef B2500000
1059 check_speed(2500000);
1060 #endif
1061 #ifdef B3000000
1062 check_speed(3000000);
1063 #endif
1064 #ifdef B3500000
1065 check_speed(3500000);
1066 #endif
1067 #ifdef B4000000
1068 check_speed(4000000);
1069 #endif
1070 spd = B115200;
1071 } while (0);
1072
1073 cfsetispeed(&tty, spd);
1074 cfsetospeed(&tty, spd);
1075
1076 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1077 |INLCR|IGNCR|ICRNL|IXON);
1078 tty.c_oflag |= OPOST;
1079 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1080 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1081 switch(data_bits) {
1082 default:
1083 case 8:
1084 tty.c_cflag |= CS8;
1085 break;
1086 case 7:
1087 tty.c_cflag |= CS7;
1088 break;
1089 case 6:
1090 tty.c_cflag |= CS6;
1091 break;
1092 case 5:
1093 tty.c_cflag |= CS5;
1094 break;
1095 }
1096 switch(parity) {
1097 default:
1098 case 'N':
1099 break;
1100 case 'E':
1101 tty.c_cflag |= PARENB;
1102 break;
1103 case 'O':
1104 tty.c_cflag |= PARENB | PARODD;
1105 break;
1106 }
1107 if (stop_bits == 2)
1108 tty.c_cflag |= CSTOPB;
1109
1110 tcsetattr (fd, TCSANOW, &tty);
1111 }
1112
1113 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1114 {
1115 FDCharDriver *s = chr->opaque;
1116
1117 switch(cmd) {
1118 case CHR_IOCTL_SERIAL_SET_PARAMS:
1119 {
1120 QEMUSerialSetParams *ssp = arg;
1121 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1122 ssp->data_bits, ssp->stop_bits);
1123 }
1124 break;
1125 case CHR_IOCTL_SERIAL_SET_BREAK:
1126 {
1127 int enable = *(int *)arg;
1128 if (enable)
1129 tcsendbreak(s->fd_in, 1);
1130 }
1131 break;
1132 case CHR_IOCTL_SERIAL_GET_TIOCM:
1133 {
1134 int sarg = 0;
1135 int *targ = (int *)arg;
1136 ioctl(s->fd_in, TIOCMGET, &sarg);
1137 *targ = 0;
1138 if (sarg & TIOCM_CTS)
1139 *targ |= CHR_TIOCM_CTS;
1140 if (sarg & TIOCM_CAR)
1141 *targ |= CHR_TIOCM_CAR;
1142 if (sarg & TIOCM_DSR)
1143 *targ |= CHR_TIOCM_DSR;
1144 if (sarg & TIOCM_RI)
1145 *targ |= CHR_TIOCM_RI;
1146 if (sarg & TIOCM_DTR)
1147 *targ |= CHR_TIOCM_DTR;
1148 if (sarg & TIOCM_RTS)
1149 *targ |= CHR_TIOCM_RTS;
1150 }
1151 break;
1152 case CHR_IOCTL_SERIAL_SET_TIOCM:
1153 {
1154 int sarg = *(int *)arg;
1155 int targ = 0;
1156 ioctl(s->fd_in, TIOCMGET, &targ);
1157 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1158 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1159 if (sarg & CHR_TIOCM_CTS)
1160 targ |= TIOCM_CTS;
1161 if (sarg & CHR_TIOCM_CAR)
1162 targ |= TIOCM_CAR;
1163 if (sarg & CHR_TIOCM_DSR)
1164 targ |= TIOCM_DSR;
1165 if (sarg & CHR_TIOCM_RI)
1166 targ |= TIOCM_RI;
1167 if (sarg & CHR_TIOCM_DTR)
1168 targ |= TIOCM_DTR;
1169 if (sarg & CHR_TIOCM_RTS)
1170 targ |= TIOCM_RTS;
1171 ioctl(s->fd_in, TIOCMSET, &targ);
1172 }
1173 break;
1174 default:
1175 return -ENOTSUP;
1176 }
1177 return 0;
1178 }
1179
1180 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1181 {
1182 const char *filename = qemu_opt_get(opts, "path");
1183 CharDriverState *chr;
1184 int fd;
1185
1186 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1187 tty_serial_init(fd, 115200, 'N', 8, 1);
1188 chr = qemu_chr_open_fd(fd, fd);
1189 if (!chr) {
1190 close(fd);
1191 return NULL;
1192 }
1193 chr->chr_ioctl = tty_serial_ioctl;
1194 qemu_chr_reset(chr);
1195 return chr;
1196 }
1197 #else /* ! __linux__ && ! __sun__ */
1198 static CharDriverState *qemu_chr_open_pty(void)
1199 {
1200 return NULL;
1201 }
1202 #endif /* __linux__ || __sun__ */
1203
1204 #if defined(__linux__)
1205 typedef struct {
1206 int fd;
1207 int mode;
1208 } ParallelCharDriver;
1209
1210 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1211 {
1212 if (s->mode != mode) {
1213 int m = mode;
1214 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1215 return 0;
1216 s->mode = mode;
1217 }
1218 return 1;
1219 }
1220
1221 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1222 {
1223 ParallelCharDriver *drv = chr->opaque;
1224 int fd = drv->fd;
1225 uint8_t b;
1226
1227 switch(cmd) {
1228 case CHR_IOCTL_PP_READ_DATA:
1229 if (ioctl(fd, PPRDATA, &b) < 0)
1230 return -ENOTSUP;
1231 *(uint8_t *)arg = b;
1232 break;
1233 case CHR_IOCTL_PP_WRITE_DATA:
1234 b = *(uint8_t *)arg;
1235 if (ioctl(fd, PPWDATA, &b) < 0)
1236 return -ENOTSUP;
1237 break;
1238 case CHR_IOCTL_PP_READ_CONTROL:
1239 if (ioctl(fd, PPRCONTROL, &b) < 0)
1240 return -ENOTSUP;
1241 /* Linux gives only the lowest bits, and no way to know data
1242 direction! For better compatibility set the fixed upper
1243 bits. */
1244 *(uint8_t *)arg = b | 0xc0;
1245 break;
1246 case CHR_IOCTL_PP_WRITE_CONTROL:
1247 b = *(uint8_t *)arg;
1248 if (ioctl(fd, PPWCONTROL, &b) < 0)
1249 return -ENOTSUP;
1250 break;
1251 case CHR_IOCTL_PP_READ_STATUS:
1252 if (ioctl(fd, PPRSTATUS, &b) < 0)
1253 return -ENOTSUP;
1254 *(uint8_t *)arg = b;
1255 break;
1256 case CHR_IOCTL_PP_DATA_DIR:
1257 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1258 return -ENOTSUP;
1259 break;
1260 case CHR_IOCTL_PP_EPP_READ_ADDR:
1261 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1262 struct ParallelIOArg *parg = arg;
1263 int n = read(fd, parg->buffer, parg->count);
1264 if (n != parg->count) {
1265 return -EIO;
1266 }
1267 }
1268 break;
1269 case CHR_IOCTL_PP_EPP_READ:
1270 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1271 struct ParallelIOArg *parg = arg;
1272 int n = read(fd, parg->buffer, parg->count);
1273 if (n != parg->count) {
1274 return -EIO;
1275 }
1276 }
1277 break;
1278 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1279 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1280 struct ParallelIOArg *parg = arg;
1281 int n = write(fd, parg->buffer, parg->count);
1282 if (n != parg->count) {
1283 return -EIO;
1284 }
1285 }
1286 break;
1287 case CHR_IOCTL_PP_EPP_WRITE:
1288 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1289 struct ParallelIOArg *parg = arg;
1290 int n = write(fd, parg->buffer, parg->count);
1291 if (n != parg->count) {
1292 return -EIO;
1293 }
1294 }
1295 break;
1296 default:
1297 return -ENOTSUP;
1298 }
1299 return 0;
1300 }
1301
1302 static void pp_close(CharDriverState *chr)
1303 {
1304 ParallelCharDriver *drv = chr->opaque;
1305 int fd = drv->fd;
1306
1307 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1308 ioctl(fd, PPRELEASE);
1309 close(fd);
1310 qemu_free(drv);
1311 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1312 }
1313
1314 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1315 {
1316 const char *filename = qemu_opt_get(opts, "path");
1317 CharDriverState *chr;
1318 ParallelCharDriver *drv;
1319 int fd;
1320
1321 TFR(fd = open(filename, O_RDWR));
1322 if (fd < 0)
1323 return NULL;
1324
1325 if (ioctl(fd, PPCLAIM) < 0) {
1326 close(fd);
1327 return NULL;
1328 }
1329
1330 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1331 drv->fd = fd;
1332 drv->mode = IEEE1284_MODE_COMPAT;
1333
1334 chr = qemu_mallocz(sizeof(CharDriverState));
1335 chr->chr_write = null_chr_write;
1336 chr->chr_ioctl = pp_ioctl;
1337 chr->chr_close = pp_close;
1338 chr->opaque = drv;
1339
1340 qemu_chr_reset(chr);
1341
1342 return chr;
1343 }
1344 #endif /* __linux__ */
1345
1346 #if defined(__FreeBSD__) || defined(__DragonFly__)
1347 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1348 {
1349 int fd = (int)chr->opaque;
1350 uint8_t b;
1351
1352 switch(cmd) {
1353 case CHR_IOCTL_PP_READ_DATA:
1354 if (ioctl(fd, PPIGDATA, &b) < 0)
1355 return -ENOTSUP;
1356 *(uint8_t *)arg = b;
1357 break;
1358 case CHR_IOCTL_PP_WRITE_DATA:
1359 b = *(uint8_t *)arg;
1360 if (ioctl(fd, PPISDATA, &b) < 0)
1361 return -ENOTSUP;
1362 break;
1363 case CHR_IOCTL_PP_READ_CONTROL:
1364 if (ioctl(fd, PPIGCTRL, &b) < 0)
1365 return -ENOTSUP;
1366 *(uint8_t *)arg = b;
1367 break;
1368 case CHR_IOCTL_PP_WRITE_CONTROL:
1369 b = *(uint8_t *)arg;
1370 if (ioctl(fd, PPISCTRL, &b) < 0)
1371 return -ENOTSUP;
1372 break;
1373 case CHR_IOCTL_PP_READ_STATUS:
1374 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1375 return -ENOTSUP;
1376 *(uint8_t *)arg = b;
1377 break;
1378 default:
1379 return -ENOTSUP;
1380 }
1381 return 0;
1382 }
1383
1384 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1385 {
1386 const char *filename = qemu_opt_get(opts, "path");
1387 CharDriverState *chr;
1388 int fd;
1389
1390 fd = open(filename, O_RDWR);
1391 if (fd < 0)
1392 return NULL;
1393
1394 chr = qemu_mallocz(sizeof(CharDriverState));
1395 chr->opaque = (void *)fd;
1396 chr->chr_write = null_chr_write;
1397 chr->chr_ioctl = pp_ioctl;
1398 return chr;
1399 }
1400 #endif
1401
1402 #else /* _WIN32 */
1403
1404 typedef struct {
1405 int max_size;
1406 HANDLE hcom, hrecv, hsend;
1407 OVERLAPPED orecv, osend;
1408 BOOL fpipe;
1409 DWORD len;
1410 } WinCharState;
1411
1412 #define NSENDBUF 2048
1413 #define NRECVBUF 2048
1414 #define MAXCONNECT 1
1415 #define NTIMEOUT 5000
1416
1417 static int win_chr_poll(void *opaque);
1418 static int win_chr_pipe_poll(void *opaque);
1419
1420 static void win_chr_close(CharDriverState *chr)
1421 {
1422 WinCharState *s = chr->opaque;
1423
1424 if (s->hsend) {
1425 CloseHandle(s->hsend);
1426 s->hsend = NULL;
1427 }
1428 if (s->hrecv) {
1429 CloseHandle(s->hrecv);
1430 s->hrecv = NULL;
1431 }
1432 if (s->hcom) {
1433 CloseHandle(s->hcom);
1434 s->hcom = NULL;
1435 }
1436 if (s->fpipe)
1437 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1438 else
1439 qemu_del_polling_cb(win_chr_poll, chr);
1440
1441 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1442 }
1443
1444 static int win_chr_init(CharDriverState *chr, const char *filename)
1445 {
1446 WinCharState *s = chr->opaque;
1447 COMMCONFIG comcfg;
1448 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1449 COMSTAT comstat;
1450 DWORD size;
1451 DWORD err;
1452
1453 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1454 if (!s->hsend) {
1455 fprintf(stderr, "Failed CreateEvent\n");
1456 goto fail;
1457 }
1458 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1459 if (!s->hrecv) {
1460 fprintf(stderr, "Failed CreateEvent\n");
1461 goto fail;
1462 }
1463
1464 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1465 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1466 if (s->hcom == INVALID_HANDLE_VALUE) {
1467 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1468 s->hcom = NULL;
1469 goto fail;
1470 }
1471
1472 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1473 fprintf(stderr, "Failed SetupComm\n");
1474 goto fail;
1475 }
1476
1477 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1478 size = sizeof(COMMCONFIG);
1479 GetDefaultCommConfig(filename, &comcfg, &size);
1480 comcfg.dcb.DCBlength = sizeof(DCB);
1481 CommConfigDialog(filename, NULL, &comcfg);
1482
1483 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1484 fprintf(stderr, "Failed SetCommState\n");
1485 goto fail;
1486 }
1487
1488 if (!SetCommMask(s->hcom, EV_ERR)) {
1489 fprintf(stderr, "Failed SetCommMask\n");
1490 goto fail;
1491 }
1492
1493 cto.ReadIntervalTimeout = MAXDWORD;
1494 if (!SetCommTimeouts(s->hcom, &cto)) {
1495 fprintf(stderr, "Failed SetCommTimeouts\n");
1496 goto fail;
1497 }
1498
1499 if (!ClearCommError(s->hcom, &err, &comstat)) {
1500 fprintf(stderr, "Failed ClearCommError\n");
1501 goto fail;
1502 }
1503 qemu_add_polling_cb(win_chr_poll, chr);
1504 return 0;
1505
1506 fail:
1507 win_chr_close(chr);
1508 return -1;
1509 }
1510
1511 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1512 {
1513 WinCharState *s = chr->opaque;
1514 DWORD len, ret, size, err;
1515
1516 len = len1;
1517 ZeroMemory(&s->osend, sizeof(s->osend));
1518 s->osend.hEvent = s->hsend;
1519 while (len > 0) {
1520 if (s->hsend)
1521 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1522 else
1523 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1524 if (!ret) {
1525 err = GetLastError();
1526 if (err == ERROR_IO_PENDING) {
1527 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1528 if (ret) {
1529 buf += size;
1530 len -= size;
1531 } else {
1532 break;
1533 }
1534 } else {
1535 break;
1536 }
1537 } else {
1538 buf += size;
1539 len -= size;
1540 }
1541 }
1542 return len1 - len;
1543 }
1544
1545 static int win_chr_read_poll(CharDriverState *chr)
1546 {
1547 WinCharState *s = chr->opaque;
1548
1549 s->max_size = qemu_chr_can_read(chr);
1550 return s->max_size;
1551 }
1552
1553 static void win_chr_readfile(CharDriverState *chr)
1554 {
1555 WinCharState *s = chr->opaque;
1556 int ret, err;
1557 uint8_t buf[1024];
1558 DWORD size;
1559
1560 ZeroMemory(&s->orecv, sizeof(s->orecv));
1561 s->orecv.hEvent = s->hrecv;
1562 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1563 if (!ret) {
1564 err = GetLastError();
1565 if (err == ERROR_IO_PENDING) {
1566 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1567 }
1568 }
1569
1570 if (size > 0) {
1571 qemu_chr_read(chr, buf, size);
1572 }
1573 }
1574
1575 static void win_chr_read(CharDriverState *chr)
1576 {
1577 WinCharState *s = chr->opaque;
1578
1579 if (s->len > s->max_size)
1580 s->len = s->max_size;
1581 if (s->len == 0)
1582 return;
1583
1584 win_chr_readfile(chr);
1585 }
1586
1587 static int win_chr_poll(void *opaque)
1588 {
1589 CharDriverState *chr = opaque;
1590 WinCharState *s = chr->opaque;
1591 COMSTAT status;
1592 DWORD comerr;
1593
1594 ClearCommError(s->hcom, &comerr, &status);
1595 if (status.cbInQue > 0) {
1596 s->len = status.cbInQue;
1597 win_chr_read_poll(chr);
1598 win_chr_read(chr);
1599 return 1;
1600 }
1601 return 0;
1602 }
1603
1604 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1605 {
1606 const char *filename = qemu_opt_get(opts, "path");
1607 CharDriverState *chr;
1608 WinCharState *s;
1609
1610 chr = qemu_mallocz(sizeof(CharDriverState));
1611 s = qemu_mallocz(sizeof(WinCharState));
1612 chr->opaque = s;
1613 chr->chr_write = win_chr_write;
1614 chr->chr_close = win_chr_close;
1615
1616 if (win_chr_init(chr, filename) < 0) {
1617 free(s);
1618 free(chr);
1619 return NULL;
1620 }
1621 qemu_chr_reset(chr);
1622 return chr;
1623 }
1624
1625 static int win_chr_pipe_poll(void *opaque)
1626 {
1627 CharDriverState *chr = opaque;
1628 WinCharState *s = chr->opaque;
1629 DWORD size;
1630
1631 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1632 if (size > 0) {
1633 s->len = size;
1634 win_chr_read_poll(chr);
1635 win_chr_read(chr);
1636 return 1;
1637 }
1638 return 0;
1639 }
1640
1641 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1642 {
1643 WinCharState *s = chr->opaque;
1644 OVERLAPPED ov;
1645 int ret;
1646 DWORD size;
1647 char openname[256];
1648
1649 s->fpipe = TRUE;
1650
1651 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1652 if (!s->hsend) {
1653 fprintf(stderr, "Failed CreateEvent\n");
1654 goto fail;
1655 }
1656 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1657 if (!s->hrecv) {
1658 fprintf(stderr, "Failed CreateEvent\n");
1659 goto fail;
1660 }
1661
1662 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1663 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1664 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1665 PIPE_WAIT,
1666 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1667 if (s->hcom == INVALID_HANDLE_VALUE) {
1668 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1669 s->hcom = NULL;
1670 goto fail;
1671 }
1672
1673 ZeroMemory(&ov, sizeof(ov));
1674 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1675 ret = ConnectNamedPipe(s->hcom, &ov);
1676 if (ret) {
1677 fprintf(stderr, "Failed ConnectNamedPipe\n");
1678 goto fail;
1679 }
1680
1681 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1682 if (!ret) {
1683 fprintf(stderr, "Failed GetOverlappedResult\n");
1684 if (ov.hEvent) {
1685 CloseHandle(ov.hEvent);
1686 ov.hEvent = NULL;
1687 }
1688 goto fail;
1689 }
1690
1691 if (ov.hEvent) {
1692 CloseHandle(ov.hEvent);
1693 ov.hEvent = NULL;
1694 }
1695 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1696 return 0;
1697
1698 fail:
1699 win_chr_close(chr);
1700 return -1;
1701 }
1702
1703
1704 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1705 {
1706 const char *filename = qemu_opt_get(opts, "path");
1707 CharDriverState *chr;
1708 WinCharState *s;
1709
1710 chr = qemu_mallocz(sizeof(CharDriverState));
1711 s = qemu_mallocz(sizeof(WinCharState));
1712 chr->opaque = s;
1713 chr->chr_write = win_chr_write;
1714 chr->chr_close = win_chr_close;
1715
1716 if (win_chr_pipe_init(chr, filename) < 0) {
1717 free(s);
1718 free(chr);
1719 return NULL;
1720 }
1721 qemu_chr_reset(chr);
1722 return chr;
1723 }
1724
1725 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1726 {
1727 CharDriverState *chr;
1728 WinCharState *s;
1729
1730 chr = qemu_mallocz(sizeof(CharDriverState));
1731 s = qemu_mallocz(sizeof(WinCharState));
1732 s->hcom = fd_out;
1733 chr->opaque = s;
1734 chr->chr_write = win_chr_write;
1735 qemu_chr_reset(chr);
1736 return chr;
1737 }
1738
1739 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1740 {
1741 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1742 }
1743
1744 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1745 {
1746 const char *file_out = qemu_opt_get(opts, "path");
1747 HANDLE fd_out;
1748
1749 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1750 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1751 if (fd_out == INVALID_HANDLE_VALUE)
1752 return NULL;
1753
1754 return qemu_chr_open_win_file(fd_out);
1755 }
1756 #endif /* !_WIN32 */
1757
1758 /***********************************************************/
1759 /* UDP Net console */
1760
1761 typedef struct {
1762 int fd;
1763 uint8_t buf[1024];
1764 int bufcnt;
1765 int bufptr;
1766 int max_size;
1767 } NetCharDriver;
1768
1769 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1770 {
1771 NetCharDriver *s = chr->opaque;
1772
1773 return send(s->fd, (const void *)buf, len, 0);
1774 }
1775
1776 static int udp_chr_read_poll(void *opaque)
1777 {
1778 CharDriverState *chr = opaque;
1779 NetCharDriver *s = chr->opaque;
1780
1781 s->max_size = qemu_chr_can_read(chr);
1782
1783 /* If there were any stray characters in the queue process them
1784 * first
1785 */
1786 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1787 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1788 s->bufptr++;
1789 s->max_size = qemu_chr_can_read(chr);
1790 }
1791 return s->max_size;
1792 }
1793
1794 static void udp_chr_read(void *opaque)
1795 {
1796 CharDriverState *chr = opaque;
1797 NetCharDriver *s = chr->opaque;
1798
1799 if (s->max_size == 0)
1800 return;
1801 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1802 s->bufptr = s->bufcnt;
1803 if (s->bufcnt <= 0)
1804 return;
1805
1806 s->bufptr = 0;
1807 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1808 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1809 s->bufptr++;
1810 s->max_size = qemu_chr_can_read(chr);
1811 }
1812 }
1813
1814 static void udp_chr_update_read_handler(CharDriverState *chr)
1815 {
1816 NetCharDriver *s = chr->opaque;
1817
1818 if (s->fd >= 0) {
1819 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1820 udp_chr_read, NULL, chr);
1821 }
1822 }
1823
1824 static void udp_chr_close(CharDriverState *chr)
1825 {
1826 NetCharDriver *s = chr->opaque;
1827 if (s->fd >= 0) {
1828 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1829 closesocket(s->fd);
1830 }
1831 qemu_free(s);
1832 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1833 }
1834
1835 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1836 {
1837 CharDriverState *chr = NULL;
1838 NetCharDriver *s = NULL;
1839 int fd = -1;
1840
1841 chr = qemu_mallocz(sizeof(CharDriverState));
1842 s = qemu_mallocz(sizeof(NetCharDriver));
1843
1844 fd = inet_dgram_opts(opts);
1845 if (fd < 0) {
1846 fprintf(stderr, "inet_dgram_opts failed\n");
1847 goto return_err;
1848 }
1849
1850 s->fd = fd;
1851 s->bufcnt = 0;
1852 s->bufptr = 0;
1853 chr->opaque = s;
1854 chr->chr_write = udp_chr_write;
1855 chr->chr_update_read_handler = udp_chr_update_read_handler;
1856 chr->chr_close = udp_chr_close;
1857 return chr;
1858
1859 return_err:
1860 if (chr)
1861 free(chr);
1862 if (s)
1863 free(s);
1864 if (fd >= 0)
1865 closesocket(fd);
1866 return NULL;
1867 }
1868
1869 /***********************************************************/
1870 /* TCP Net console */
1871
1872 typedef struct {
1873 int fd, listen_fd;
1874 int connected;
1875 int max_size;
1876 int do_telnetopt;
1877 int do_nodelay;
1878 int is_unix;
1879 int msgfd;
1880 } TCPCharDriver;
1881
1882 static void tcp_chr_accept(void *opaque);
1883
1884 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1885 {
1886 TCPCharDriver *s = chr->opaque;
1887 if (s->connected) {
1888 return send_all(s->fd, buf, len);
1889 } else {
1890 /* XXX: indicate an error ? */
1891 return len;
1892 }
1893 }
1894
1895 static int tcp_chr_read_poll(void *opaque)
1896 {
1897 CharDriverState *chr = opaque;
1898 TCPCharDriver *s = chr->opaque;
1899 if (!s->connected)
1900 return 0;
1901 s->max_size = qemu_chr_can_read(chr);
1902 return s->max_size;
1903 }
1904
1905 #define IAC 255
1906 #define IAC_BREAK 243
1907 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1908 TCPCharDriver *s,
1909 uint8_t *buf, int *size)
1910 {
1911 /* Handle any telnet client's basic IAC options to satisfy char by
1912 * char mode with no echo. All IAC options will be removed from
1913 * the buf and the do_telnetopt variable will be used to track the
1914 * state of the width of the IAC information.
1915 *
1916 * IAC commands come in sets of 3 bytes with the exception of the
1917 * "IAC BREAK" command and the double IAC.
1918 */
1919
1920 int i;
1921 int j = 0;
1922
1923 for (i = 0; i < *size; i++) {
1924 if (s->do_telnetopt > 1) {
1925 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1926 /* Double IAC means send an IAC */
1927 if (j != i)
1928 buf[j] = buf[i];
1929 j++;
1930 s->do_telnetopt = 1;
1931 } else {
1932 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1933 /* Handle IAC break commands by sending a serial break */
1934 qemu_chr_event(chr, CHR_EVENT_BREAK);
1935 s->do_telnetopt++;
1936 }
1937 s->do_telnetopt++;
1938 }
1939 if (s->do_telnetopt >= 4) {
1940 s->do_telnetopt = 1;
1941 }
1942 } else {
1943 if ((unsigned char)buf[i] == IAC) {
1944 s->do_telnetopt = 2;
1945 } else {
1946 if (j != i)
1947 buf[j] = buf[i];
1948 j++;
1949 }
1950 }
1951 }
1952 *size = j;
1953 }
1954
1955 static int tcp_get_msgfd(CharDriverState *chr)
1956 {
1957 TCPCharDriver *s = chr->opaque;
1958
1959 return s->msgfd;
1960 }
1961
1962 #ifndef _WIN32
1963 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1964 {
1965 TCPCharDriver *s = chr->opaque;
1966 struct cmsghdr *cmsg;
1967
1968 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1969 int fd;
1970
1971 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
1972 cmsg->cmsg_level != SOL_SOCKET ||
1973 cmsg->cmsg_type != SCM_RIGHTS)
1974 continue;
1975
1976 fd = *((int *)CMSG_DATA(cmsg));
1977 if (fd < 0)
1978 continue;
1979
1980 if (s->msgfd != -1)
1981 close(s->msgfd);
1982 s->msgfd = fd;
1983 }
1984 }
1985
1986 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1987 {
1988 TCPCharDriver *s = chr->opaque;
1989 struct msghdr msg = { NULL, };
1990 struct iovec iov[1];
1991 union {
1992 struct cmsghdr cmsg;
1993 char control[CMSG_SPACE(sizeof(int))];
1994 } msg_control;
1995 ssize_t ret;
1996
1997 iov[0].iov_base = buf;
1998 iov[0].iov_len = len;
1999
2000 msg.msg_iov = iov;
2001 msg.msg_iovlen = 1;
2002 msg.msg_control = &msg_control;
2003 msg.msg_controllen = sizeof(msg_control);
2004
2005 ret = recvmsg(s->fd, &msg, 0);
2006 if (ret > 0 && s->is_unix)
2007 unix_process_msgfd(chr, &msg);
2008
2009 return ret;
2010 }
2011 #else
2012 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2013 {
2014 TCPCharDriver *s = chr->opaque;
2015 return recv(s->fd, buf, len, 0);
2016 }
2017 #endif
2018
2019 static void tcp_chr_read(void *opaque)
2020 {
2021 CharDriverState *chr = opaque;
2022 TCPCharDriver *s = chr->opaque;
2023 uint8_t buf[1024];
2024 int len, size;
2025
2026 if (!s->connected || s->max_size <= 0)
2027 return;
2028 len = sizeof(buf);
2029 if (len > s->max_size)
2030 len = s->max_size;
2031 size = tcp_chr_recv(chr, (void *)buf, len);
2032 if (size == 0) {
2033 /* connection closed */
2034 s->connected = 0;
2035 if (s->listen_fd >= 0) {
2036 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2037 }
2038 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2039 closesocket(s->fd);
2040 s->fd = -1;
2041 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2042 } else if (size > 0) {
2043 if (s->do_telnetopt)
2044 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2045 if (size > 0)
2046 qemu_chr_read(chr, buf, size);
2047 if (s->msgfd != -1) {
2048 close(s->msgfd);
2049 s->msgfd = -1;
2050 }
2051 }
2052 }
2053
2054 static void tcp_chr_connect(void *opaque)
2055 {
2056 CharDriverState *chr = opaque;
2057 TCPCharDriver *s = chr->opaque;
2058
2059 s->connected = 1;
2060 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2061 tcp_chr_read, NULL, chr);
2062 qemu_chr_reset(chr);
2063 }
2064
2065 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2066 static void tcp_chr_telnet_init(int fd)
2067 {
2068 char buf[3];
2069 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2070 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2071 send(fd, (char *)buf, 3, 0);
2072 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2073 send(fd, (char *)buf, 3, 0);
2074 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2075 send(fd, (char *)buf, 3, 0);
2076 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2077 send(fd, (char *)buf, 3, 0);
2078 }
2079
2080 static void socket_set_nodelay(int fd)
2081 {
2082 int val = 1;
2083 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2084 }
2085
2086 static void tcp_chr_accept(void *opaque)
2087 {
2088 CharDriverState *chr = opaque;
2089 TCPCharDriver *s = chr->opaque;
2090 struct sockaddr_in saddr;
2091 #ifndef _WIN32
2092 struct sockaddr_un uaddr;
2093 #endif
2094 struct sockaddr *addr;
2095 socklen_t len;
2096 int fd;
2097
2098 for(;;) {
2099 #ifndef _WIN32
2100 if (s->is_unix) {
2101 len = sizeof(uaddr);
2102 addr = (struct sockaddr *)&uaddr;
2103 } else
2104 #endif
2105 {
2106 len = sizeof(saddr);
2107 addr = (struct sockaddr *)&saddr;
2108 }
2109 fd = accept(s->listen_fd, addr, &len);
2110 if (fd < 0 && errno != EINTR) {
2111 return;
2112 } else if (fd >= 0) {
2113 if (s->do_telnetopt)
2114 tcp_chr_telnet_init(fd);
2115 break;
2116 }
2117 }
2118 socket_set_nonblock(fd);
2119 if (s->do_nodelay)
2120 socket_set_nodelay(fd);
2121 s->fd = fd;
2122 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2123 tcp_chr_connect(chr);
2124 }
2125
2126 static void tcp_chr_close(CharDriverState *chr)
2127 {
2128 TCPCharDriver *s = chr->opaque;
2129 if (s->fd >= 0) {
2130 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2131 closesocket(s->fd);
2132 }
2133 if (s->listen_fd >= 0) {
2134 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2135 closesocket(s->listen_fd);
2136 }
2137 qemu_free(s);
2138 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2139 }
2140
2141 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2142 {
2143 CharDriverState *chr = NULL;
2144 TCPCharDriver *s = NULL;
2145 int fd = -1;
2146 int is_listen;
2147 int is_waitconnect;
2148 int do_nodelay;
2149 int is_unix;
2150 int is_telnet;
2151
2152 is_listen = qemu_opt_get_bool(opts, "server", 0);
2153 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2154 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2155 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2156 is_unix = qemu_opt_get(opts, "path") != NULL;
2157 if (!is_listen)
2158 is_waitconnect = 0;
2159
2160 chr = qemu_mallocz(sizeof(CharDriverState));
2161 s = qemu_mallocz(sizeof(TCPCharDriver));
2162
2163 if (is_unix) {
2164 if (is_listen) {
2165 fd = unix_listen_opts(opts);
2166 } else {
2167 fd = unix_connect_opts(opts);
2168 }
2169 } else {
2170 if (is_listen) {
2171 fd = inet_listen_opts(opts, 0);
2172 } else {
2173 fd = inet_connect_opts(opts);
2174 }
2175 }
2176 if (fd < 0)
2177 goto fail;
2178
2179 if (!is_waitconnect)
2180 socket_set_nonblock(fd);
2181
2182 s->connected = 0;
2183 s->fd = -1;
2184 s->listen_fd = -1;
2185 s->msgfd = -1;
2186 s->is_unix = is_unix;
2187 s->do_nodelay = do_nodelay && !is_unix;
2188
2189 chr->opaque = s;
2190 chr->chr_write = tcp_chr_write;
2191 chr->chr_close = tcp_chr_close;
2192 chr->get_msgfd = tcp_get_msgfd;
2193
2194 if (is_listen) {
2195 s->listen_fd = fd;
2196 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2197 if (is_telnet)
2198 s->do_telnetopt = 1;
2199
2200 } else {
2201 s->connected = 1;
2202 s->fd = fd;
2203 socket_set_nodelay(fd);
2204 tcp_chr_connect(chr);
2205 }
2206
2207 /* for "info chardev" monitor command */
2208 chr->filename = qemu_malloc(256);
2209 if (is_unix) {
2210 snprintf(chr->filename, 256, "unix:%s%s",
2211 qemu_opt_get(opts, "path"),
2212 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2213 } else if (is_telnet) {
2214 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2215 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2216 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2217 } else {
2218 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2219 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2220 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2221 }
2222
2223 if (is_listen && is_waitconnect) {
2224 printf("QEMU waiting for connection on: %s\n",
2225 chr->filename);
2226 tcp_chr_accept(chr);
2227 socket_set_nonblock(s->listen_fd);
2228 }
2229 return chr;
2230
2231 fail:
2232 if (fd >= 0)
2233 closesocket(fd);
2234 qemu_free(s);
2235 qemu_free(chr);
2236 return NULL;
2237 }
2238
2239 static QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2240 {
2241 char host[65], port[33], width[8], height[8];
2242 int pos;
2243 const char *p;
2244 QemuOpts *opts;
2245
2246 opts = qemu_opts_create(&qemu_chardev_opts, label, 1);
2247 if (NULL == opts)
2248 return NULL;
2249
2250 if (strstart(filename, "mon:", &p)) {
2251 filename = p;
2252 qemu_opt_set(opts, "mux", "on");
2253 }
2254
2255 if (strcmp(filename, "null") == 0 ||
2256 strcmp(filename, "pty") == 0 ||
2257 strcmp(filename, "msmouse") == 0 ||
2258 strcmp(filename, "braille") == 0 ||
2259 strcmp(filename, "stdio") == 0) {
2260 qemu_opt_set(opts, "backend", filename);
2261 return opts;
2262 }
2263 if (strstart(filename, "vc", &p)) {
2264 qemu_opt_set(opts, "backend", "vc");
2265 if (*p == ':') {
2266 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2267 /* pixels */
2268 qemu_opt_set(opts, "width", width);
2269 qemu_opt_set(opts, "height", height);
2270 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2271 /* chars */
2272 qemu_opt_set(opts, "cols", width);
2273 qemu_opt_set(opts, "rows", height);
2274 } else {
2275 goto fail;
2276 }
2277 }
2278 return opts;
2279 }
2280 if (strcmp(filename, "con:") == 0) {
2281 qemu_opt_set(opts, "backend", "console");
2282 return opts;
2283 }
2284 if (strstart(filename, "COM", NULL)) {
2285 qemu_opt_set(opts, "backend", "serial");
2286 qemu_opt_set(opts, "path", filename);
2287 return opts;
2288 }
2289 if (strstart(filename, "file:", &p)) {
2290 qemu_opt_set(opts, "backend", "file");
2291 qemu_opt_set(opts, "path", p);
2292 return opts;
2293 }
2294 if (strstart(filename, "pipe:", &p)) {
2295 qemu_opt_set(opts, "backend", "pipe");
2296 qemu_opt_set(opts, "path", p);
2297 return opts;
2298 }
2299 if (strstart(filename, "tcp:", &p) ||
2300 strstart(filename, "telnet:", &p)) {
2301 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2302 host[0] = 0;
2303 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2304 goto fail;
2305 }
2306 qemu_opt_set(opts, "backend", "socket");
2307 qemu_opt_set(opts, "host", host);
2308 qemu_opt_set(opts, "port", port);
2309 if (p[pos] == ',') {
2310 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2311 goto fail;
2312 }
2313 if (strstart(filename, "telnet:", &p))
2314 qemu_opt_set(opts, "telnet", "on");
2315 return opts;
2316 }
2317 if (strstart(filename, "udp:", &p)) {
2318 qemu_opt_set(opts, "backend", "udp");
2319 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2320 host[0] = 0;
2321 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2322 fprintf(stderr, "udp #1\n");
2323 goto fail;
2324 }
2325 }
2326 qemu_opt_set(opts, "host", host);
2327 qemu_opt_set(opts, "port", port);
2328 if (p[pos] == '@') {
2329 p += pos + 1;
2330 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2331 host[0] = 0;
2332 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2333 fprintf(stderr, "udp #2\n");
2334 goto fail;
2335 }
2336 }
2337 qemu_opt_set(opts, "localaddr", host);
2338 qemu_opt_set(opts, "localport", port);
2339 }
2340 return opts;
2341 }
2342 if (strstart(filename, "unix:", &p)) {
2343 qemu_opt_set(opts, "backend", "socket");
2344 if (qemu_opts_do_parse(opts, p, "path") != 0)
2345 goto fail;
2346 return opts;
2347 }
2348 if (strstart(filename, "/dev/parport", NULL) ||
2349 strstart(filename, "/dev/ppi", NULL)) {
2350 qemu_opt_set(opts, "backend", "parport");
2351 qemu_opt_set(opts, "path", filename);
2352 return opts;
2353 }
2354 if (strstart(filename, "/dev/", NULL)) {
2355 qemu_opt_set(opts, "backend", "tty");
2356 qemu_opt_set(opts, "path", filename);
2357 return opts;
2358 }
2359
2360 fail:
2361 fprintf(stderr, "%s: fail on \"%s\"\n", __FUNCTION__, filename);
2362 qemu_opts_del(opts);
2363 return NULL;
2364 }
2365
2366 static const struct {
2367 const char *name;
2368 CharDriverState *(*open)(QemuOpts *opts);
2369 } backend_table[] = {
2370 { .name = "null", .open = qemu_chr_open_null },
2371 { .name = "socket", .open = qemu_chr_open_socket },
2372 { .name = "udp", .open = qemu_chr_open_udp },
2373 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2374 { .name = "vc", .open = text_console_init },
2375 #ifdef _WIN32
2376 { .name = "file", .open = qemu_chr_open_win_file_out },
2377 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2378 { .name = "console", .open = qemu_chr_open_win_con },
2379 { .name = "serial", .open = qemu_chr_open_win },
2380 #else
2381 { .name = "file", .open = qemu_chr_open_file_out },
2382 { .name = "pipe", .open = qemu_chr_open_pipe },
2383 { .name = "pty", .open = qemu_chr_open_pty },
2384 { .name = "stdio", .open = qemu_chr_open_stdio },
2385 #endif
2386 #ifdef CONFIG_BRLAPI
2387 { .name = "braille", .open = chr_baum_init },
2388 #endif
2389 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2390 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
2391 { .name = "tty", .open = qemu_chr_open_tty },
2392 #endif
2393 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__)
2394 { .name = "parport", .open = qemu_chr_open_pp },
2395 #endif
2396 };
2397
2398 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2399 void (*init)(struct CharDriverState *s))
2400 {
2401 CharDriverState *chr;
2402 int i;
2403
2404 if (qemu_opts_id(opts) == NULL) {
2405 fprintf(stderr, "chardev: no id specified\n");
2406 return NULL;
2407 }
2408
2409 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2410 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2411 break;
2412 }
2413 if (i == ARRAY_SIZE(backend_table)) {
2414 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2415 qemu_opt_get(opts, "backend"));
2416 return NULL;
2417 }
2418
2419 chr = backend_table[i].open(opts);
2420 if (!chr) {
2421 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2422 qemu_opt_get(opts, "backend"));
2423 return NULL;
2424 }
2425
2426 if (!chr->filename)
2427 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2428 chr->init = init;
2429 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2430
2431 if (qemu_opt_get_bool(opts, "mux", 0)) {
2432 CharDriverState *base = chr;
2433 int len = strlen(qemu_opts_id(opts)) + 6;
2434 base->label = qemu_malloc(len);
2435 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2436 chr = qemu_chr_open_mux(base);
2437 chr->filename = base->filename;
2438 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2439 }
2440 chr->label = qemu_strdup(qemu_opts_id(opts));
2441 return chr;
2442 }
2443
2444 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2445 {
2446 const char *p;
2447 CharDriverState *chr;
2448 QemuOpts *opts;
2449
2450 if (strstart(filename, "chardev:", &p)) {
2451 return qemu_chr_find(p);
2452 }
2453
2454 opts = qemu_chr_parse_compat(label, filename);
2455 if (!opts)
2456 return NULL;
2457
2458 chr = qemu_chr_open_opts(opts, init);
2459 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2460 monitor_init(chr, MONITOR_USE_READLINE);
2461 }
2462 return chr;
2463 }
2464
2465 void qemu_chr_close(CharDriverState *chr)
2466 {
2467 QTAILQ_REMOVE(&chardevs, chr, next);
2468 if (chr->chr_close)
2469 chr->chr_close(chr);
2470 qemu_free(chr->filename);
2471 qemu_free(chr->label);
2472 qemu_free(chr);
2473 }
2474
2475 void qemu_chr_info(Monitor *mon)
2476 {
2477 CharDriverState *chr;
2478
2479 QTAILQ_FOREACH(chr, &chardevs, next) {
2480 monitor_printf(mon, "%s: filename=%s\n", chr->label, chr->filename);
2481 }
2482 }
2483
2484 CharDriverState *qemu_chr_find(const char *name)
2485 {
2486 CharDriverState *chr;
2487
2488 QTAILQ_FOREACH(chr, &chardevs, next) {
2489 if (strcmp(chr->label, name) != 0)
2490 continue;
2491 return chr;
2492 }
2493 return NULL;
2494 }
various patches