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Merge remote branch 'qemu-kvm/uq/stable-0.12' into stable-0.12
[qemu/mdroth.git] / qemu-char.c
blob5a1b535bdccd14c070a02d56fcdc446c785db902
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 #include "qemu-objects.h"
36
37 #include <unistd.h>
38 #include <fcntl.h>
39 #include <signal.h>
40 #include <time.h>
41 #include <errno.h>
42 #include <sys/time.h>
43 #include <zlib.h>
44
45 #ifndef _WIN32
46 #include <sys/times.h>
47 #include <sys/wait.h>
48 #include <termios.h>
49 #include <sys/mman.h>
50 #include <sys/ioctl.h>
51 #include <sys/resource.h>
52 #include <sys/socket.h>
53 #include <netinet/in.h>
54 #include <net/if.h>
55 #include <arpa/inet.h>
56 #include <dirent.h>
57 #include <netdb.h>
58 #include <sys/select.h>
59 #ifdef CONFIG_BSD
60 #include <sys/stat.h>
61 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
62 #include <libutil.h>
63 #include <dev/ppbus/ppi.h>
64 #include <dev/ppbus/ppbconf.h>
65 #if defined(__GLIBC__)
66 #include <pty.h>
67 #endif
68 #elif defined(__DragonFly__)
69 #include <libutil.h>
70 #include <dev/misc/ppi/ppi.h>
71 #include <bus/ppbus/ppbconf.h>
72 #else
73 #include <util.h>
74 #endif
75 #else
76 #ifdef __linux__
77 #include <pty.h>
78
79 #include <linux/ppdev.h>
80 #include <linux/parport.h>
81 #endif
82 #ifdef __sun__
83 #include <sys/stat.h>
84 #include <sys/ethernet.h>
85 #include <sys/sockio.h>
86 #include <netinet/arp.h>
87 #include <netinet/in.h>
88 #include <netinet/in_systm.h>
89 #include <netinet/ip.h>
90 #include <netinet/ip_icmp.h> // must come after ip.h
91 #include <netinet/udp.h>
92 #include <netinet/tcp.h>
93 #include <net/if.h>
94 #include <syslog.h>
95 #include <stropts.h>
96 #endif
97 #endif
98 #endif
99
100 #include "qemu_socket.h"
101
102 #define READ_BUF_LEN 4096
103
104 /***********************************************************/
105 /* character device */
106
107 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
108 QTAILQ_HEAD_INITIALIZER(chardevs);
109
110 static void qemu_chr_event(CharDriverState *s, int event)
111 {
112 if (!s->chr_event)
113 return;
114 s->chr_event(s->handler_opaque, event);
115 }
116
117 static void qemu_chr_generic_open_bh(void *opaque)
118 {
119 CharDriverState *s = opaque;
120 qemu_chr_event(s, CHR_EVENT_OPENED);
121 qemu_bh_delete(s->bh);
122 s->bh = NULL;
123 }
124
125 void qemu_chr_generic_open(CharDriverState *s)
126 {
127 if (s->bh == NULL) {
128 s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
129 qemu_bh_schedule(s->bh);
130 }
131 }
132
133 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
134 {
135 return s->chr_write(s, buf, len);
136 }
137
138 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
139 {
140 if (!s->chr_ioctl)
141 return -ENOTSUP;
142 return s->chr_ioctl(s, cmd, arg);
143 }
144
145 int qemu_chr_can_read(CharDriverState *s)
146 {
147 if (!s->chr_can_read)
148 return 0;
149 return s->chr_can_read(s->handler_opaque);
150 }
151
152 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
153 {
154 s->chr_read(s->handler_opaque, buf, len);
155 }
156
157 int qemu_chr_get_msgfd(CharDriverState *s)
158 {
159 return s->get_msgfd ? s->get_msgfd(s) : -1;
160 }
161
162 void qemu_chr_accept_input(CharDriverState *s)
163 {
164 if (s->chr_accept_input)
165 s->chr_accept_input(s);
166 }
167
168 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
169 {
170 char buf[READ_BUF_LEN];
171 va_list ap;
172 va_start(ap, fmt);
173 vsnprintf(buf, sizeof(buf), fmt, ap);
174 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
175 va_end(ap);
176 }
177
178 void qemu_chr_send_event(CharDriverState *s, int event)
179 {
180 if (s->chr_send_event)
181 s->chr_send_event(s, event);
182 }
183
184 void qemu_chr_add_handlers(CharDriverState *s,
185 IOCanRWHandler *fd_can_read,
186 IOReadHandler *fd_read,
187 IOEventHandler *fd_event,
188 void *opaque)
189 {
190 s->chr_can_read = fd_can_read;
191 s->chr_read = fd_read;
192 s->chr_event = fd_event;
193 s->handler_opaque = opaque;
194 if (s->chr_update_read_handler)
195 s->chr_update_read_handler(s);
196 }
197
198 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
199 {
200 return len;
201 }
202
203 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
204 {
205 CharDriverState *chr;
206
207 chr = qemu_mallocz(sizeof(CharDriverState));
208 chr->chr_write = null_chr_write;
209 return chr;
210 }
211
212 /* MUX driver for serial I/O splitting */
213 #define MAX_MUX 4
214 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
215 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
216 typedef struct {
217 IOCanRWHandler *chr_can_read[MAX_MUX];
218 IOReadHandler *chr_read[MAX_MUX];
219 IOEventHandler *chr_event[MAX_MUX];
220 void *ext_opaque[MAX_MUX];
221 CharDriverState *drv;
222 int focus;
223 int mux_cnt;
224 int term_got_escape;
225 int max_size;
226 /* Intermediate input buffer allows to catch escape sequences even if the
227 currently active device is not accepting any input - but only until it
228 is full as well. */
229 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
230 int prod[MAX_MUX];
231 int cons[MAX_MUX];
232 int timestamps;
233 int linestart;
234 int64_t timestamps_start;
235 } MuxDriver;
236
237
238 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
239 {
240 MuxDriver *d = chr->opaque;
241 int ret;
242 if (!d->timestamps) {
243 ret = d->drv->chr_write(d->drv, buf, len);
244 } else {
245 int i;
246
247 ret = 0;
248 for (i = 0; i < len; i++) {
249 if (d->linestart) {
250 char buf1[64];
251 int64_t ti;
252 int secs;
253
254 ti = qemu_get_clock(rt_clock);
255 if (d->timestamps_start == -1)
256 d->timestamps_start = ti;
257 ti -= d->timestamps_start;
258 secs = ti / 1000;
259 snprintf(buf1, sizeof(buf1),
260 "[%02d:%02d:%02d.%03d] ",
261 secs / 3600,
262 (secs / 60) % 60,
263 secs % 60,
264 (int)(ti % 1000));
265 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
266 d->linestart = 0;
267 }
268 ret += d->drv->chr_write(d->drv, buf+i, 1);
269 if (buf[i] == '\n') {
270 d->linestart = 1;
271 }
272 }
273 }
274 return ret;
275 }
276
277 static const char * const mux_help[] = {
278 "% h print this help\n\r",
279 "% x exit emulator\n\r",
280 "% s save disk data back to file (if -snapshot)\n\r",
281 "% t toggle console timestamps\n\r"
282 "% b send break (magic sysrq)\n\r",
283 "% c switch between console and monitor\n\r",
284 "% % sends %\n\r",
285 NULL
286 };
287
288 int term_escape_char = 0x01; /* ctrl-a is used for escape */
289 static void mux_print_help(CharDriverState *chr)
290 {
291 int i, j;
292 char ebuf[15] = "Escape-Char";
293 char cbuf[50] = "\n\r";
294
295 if (term_escape_char > 0 && term_escape_char < 26) {
296 snprintf(cbuf, sizeof(cbuf), "\n\r");
297 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
298 } else {
299 snprintf(cbuf, sizeof(cbuf),
300 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
301 term_escape_char);
302 }
303 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
304 for (i = 0; mux_help[i] != NULL; i++) {
305 for (j=0; mux_help[i][j] != '\0'; j++) {
306 if (mux_help[i][j] == '%')
307 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
308 else
309 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
310 }
311 }
312 }
313
314 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
315 {
316 if (d->chr_event[mux_nr])
317 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
318 }
319
320 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
321 {
322 if (d->term_got_escape) {
323 d->term_got_escape = 0;
324 if (ch == term_escape_char)
325 goto send_char;
326 switch(ch) {
327 case '?':
328 case 'h':
329 mux_print_help(chr);
330 break;
331 case 'x':
332 {
333 const char *term = "QEMU: Terminated\n\r";
334 chr->chr_write(chr,(uint8_t *)term,strlen(term));
335 exit(0);
336 break;
337 }
338 case 's':
339 {
340 DriveInfo *dinfo;
341 QTAILQ_FOREACH(dinfo, &drives, next) {
342 bdrv_commit(dinfo->bdrv);
343 }
344 }
345 break;
346 case 'b':
347 qemu_chr_event(chr, CHR_EVENT_BREAK);
348 break;
349 case 'c':
350 /* Switch to the next registered device */
351 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
352 d->focus++;
353 if (d->focus >= d->mux_cnt)
354 d->focus = 0;
355 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
356 break;
357 case 't':
358 d->timestamps = !d->timestamps;
359 d->timestamps_start = -1;
360 d->linestart = 0;
361 break;
362 }
363 } else if (ch == term_escape_char) {
364 d->term_got_escape = 1;
365 } else {
366 send_char:
367 return 1;
368 }
369 return 0;
370 }
371
372 static void mux_chr_accept_input(CharDriverState *chr)
373 {
374 MuxDriver *d = chr->opaque;
375 int m = d->focus;
376
377 while (d->prod[m] != d->cons[m] &&
378 d->chr_can_read[m] &&
379 d->chr_can_read[m](d->ext_opaque[m])) {
380 d->chr_read[m](d->ext_opaque[m],
381 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
382 }
383 }
384
385 static int mux_chr_can_read(void *opaque)
386 {
387 CharDriverState *chr = opaque;
388 MuxDriver *d = chr->opaque;
389 int m = d->focus;
390
391 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
392 return 1;
393 if (d->chr_can_read[m])
394 return d->chr_can_read[m](d->ext_opaque[m]);
395 return 0;
396 }
397
398 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
399 {
400 CharDriverState *chr = opaque;
401 MuxDriver *d = chr->opaque;
402 int m = d->focus;
403 int i;
404
405 mux_chr_accept_input (opaque);
406
407 for(i = 0; i < size; i++)
408 if (mux_proc_byte(chr, d, buf[i])) {
409 if (d->prod[m] == d->cons[m] &&
410 d->chr_can_read[m] &&
411 d->chr_can_read[m](d->ext_opaque[m]))
412 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
413 else
414 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
415 }
416 }
417
418 static void mux_chr_event(void *opaque, int event)
419 {
420 CharDriverState *chr = opaque;
421 MuxDriver *d = chr->opaque;
422 int i;
423
424 /* Send the event to all registered listeners */
425 for (i = 0; i < d->mux_cnt; i++)
426 mux_chr_send_event(d, i, event);
427 }
428
429 static void mux_chr_update_read_handler(CharDriverState *chr)
430 {
431 MuxDriver *d = chr->opaque;
432
433 if (d->mux_cnt >= MAX_MUX) {
434 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
435 return;
436 }
437 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
438 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
439 d->chr_read[d->mux_cnt] = chr->chr_read;
440 d->chr_event[d->mux_cnt] = chr->chr_event;
441 /* Fix up the real driver with mux routines */
442 if (d->mux_cnt == 0) {
443 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
444 mux_chr_event, chr);
445 }
446 if (d->focus != -1) {
447 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
448 }
449 d->focus = d->mux_cnt;
450 d->mux_cnt++;
451 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
452 }
453
454 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
455 {
456 CharDriverState *chr;
457 MuxDriver *d;
458
459 chr = qemu_mallocz(sizeof(CharDriverState));
460 d = qemu_mallocz(sizeof(MuxDriver));
461
462 chr->opaque = d;
463 d->drv = drv;
464 d->focus = -1;
465 chr->chr_write = mux_chr_write;
466 chr->chr_update_read_handler = mux_chr_update_read_handler;
467 chr->chr_accept_input = mux_chr_accept_input;
468 return chr;
469 }
470
471
472 #ifdef _WIN32
473 int send_all(int fd, const void *buf, int len1)
474 {
475 int ret, len;
476
477 len = len1;
478 while (len > 0) {
479 ret = send(fd, buf, len, 0);
480 if (ret < 0) {
481 errno = WSAGetLastError();
482 if (errno != WSAEWOULDBLOCK) {
483 return -1;
484 }
485 } else if (ret == 0) {
486 break;
487 } else {
488 buf += ret;
489 len -= ret;
490 }
491 }
492 return len1 - len;
493 }
494
495 #else
496
497 static int unix_write(int fd, const uint8_t *buf, int len1)
498 {
499 int ret, len;
500
501 len = len1;
502 while (len > 0) {
503 ret = write(fd, buf, len);
504 if (ret < 0) {
505 if (errno != EINTR && errno != EAGAIN)
506 return -1;
507 } else if (ret == 0) {
508 break;
509 } else {
510 buf += ret;
511 len -= ret;
512 }
513 }
514 return len1 - len;
515 }
516
517 int send_all(int fd, const void *buf, int len1)
518 {
519 return unix_write(fd, buf, len1);
520 }
521 #endif /* !_WIN32 */
522
523 #ifndef _WIN32
524
525 typedef struct {
526 int fd_in, fd_out;
527 int max_size;
528 } FDCharDriver;
529
530 #define STDIO_MAX_CLIENTS 1
531 static int stdio_nb_clients = 0;
532
533 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
534 {
535 FDCharDriver *s = chr->opaque;
536 return send_all(s->fd_out, buf, len);
537 }
538
539 static int fd_chr_read_poll(void *opaque)
540 {
541 CharDriverState *chr = opaque;
542 FDCharDriver *s = chr->opaque;
543
544 s->max_size = qemu_chr_can_read(chr);
545 return s->max_size;
546 }
547
548 static void fd_chr_read(void *opaque)
549 {
550 CharDriverState *chr = opaque;
551 FDCharDriver *s = chr->opaque;
552 int size, len;
553 uint8_t buf[READ_BUF_LEN];
554
555 len = sizeof(buf);
556 if (len > s->max_size)
557 len = s->max_size;
558 if (len == 0)
559 return;
560 size = read(s->fd_in, buf, len);
561 if (size == 0) {
562 /* FD has been closed. Remove it from the active list. */
563 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
564 qemu_chr_event(chr, CHR_EVENT_CLOSED);
565 return;
566 }
567 if (size > 0) {
568 qemu_chr_read(chr, buf, size);
569 }
570 }
571
572 static void fd_chr_update_read_handler(CharDriverState *chr)
573 {
574 FDCharDriver *s = chr->opaque;
575
576 if (s->fd_in >= 0) {
577 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
578 } else {
579 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
580 fd_chr_read, NULL, chr);
581 }
582 }
583 }
584
585 static void fd_chr_close(struct CharDriverState *chr)
586 {
587 FDCharDriver *s = chr->opaque;
588
589 if (s->fd_in >= 0) {
590 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
591 } else {
592 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
593 }
594 }
595
596 qemu_free(s);
597 qemu_chr_event(chr, CHR_EVENT_CLOSED);
598 }
599
600 /* open a character device to a unix fd */
601 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
602 {
603 CharDriverState *chr;
604 FDCharDriver *s;
605
606 chr = qemu_mallocz(sizeof(CharDriverState));
607 s = qemu_mallocz(sizeof(FDCharDriver));
608 s->fd_in = fd_in;
609 s->fd_out = fd_out;
610 chr->opaque = s;
611 chr->chr_write = fd_chr_write;
612 chr->chr_update_read_handler = fd_chr_update_read_handler;
613 chr->chr_close = fd_chr_close;
614
615 qemu_chr_generic_open(chr);
616
617 return chr;
618 }
619
620 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
621 {
622 int fd_out;
623
624 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
625 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
626 if (fd_out < 0)
627 return NULL;
628 return qemu_chr_open_fd(-1, fd_out);
629 }
630
631 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
632 {
633 int fd_in, fd_out;
634 char filename_in[256], filename_out[256];
635 const char *filename = qemu_opt_get(opts, "path");
636
637 if (filename == NULL) {
638 fprintf(stderr, "chardev: pipe: no filename given\n");
639 return NULL;
640 }
641
642 snprintf(filename_in, 256, "%s.in", filename);
643 snprintf(filename_out, 256, "%s.out", filename);
644 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
645 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
646 if (fd_in < 0 || fd_out < 0) {
647 if (fd_in >= 0)
648 close(fd_in);
649 if (fd_out >= 0)
650 close(fd_out);
651 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
652 if (fd_in < 0)
653 return NULL;
654 }
655 return qemu_chr_open_fd(fd_in, fd_out);
656 }
657
658
659 /* for STDIO, we handle the case where several clients use it
660 (nographic mode) */
661
662 #define TERM_FIFO_MAX_SIZE 1
663
664 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
665 static int term_fifo_size;
666
667 static int stdio_read_poll(void *opaque)
668 {
669 CharDriverState *chr = opaque;
670
671 /* try to flush the queue if needed */
672 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
673 qemu_chr_read(chr, term_fifo, 1);
674 term_fifo_size = 0;
675 }
676 /* see if we can absorb more chars */
677 if (term_fifo_size == 0)
678 return 1;
679 else
680 return 0;
681 }
682
683 static void stdio_read(void *opaque)
684 {
685 int size;
686 uint8_t buf[1];
687 CharDriverState *chr = opaque;
688
689 size = read(0, buf, 1);
690 if (size == 0) {
691 /* stdin has been closed. Remove it from the active list. */
692 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
693 qemu_chr_event(chr, CHR_EVENT_CLOSED);
694 return;
695 }
696 if (size > 0) {
697 if (qemu_chr_can_read(chr) > 0) {
698 qemu_chr_read(chr, buf, 1);
699 } else if (term_fifo_size == 0) {
700 term_fifo[term_fifo_size++] = buf[0];
701 }
702 }
703 }
704
705 /* init terminal so that we can grab keys */
706 static struct termios oldtty;
707 static int old_fd0_flags;
708 static int term_atexit_done;
709
710 static void term_exit(void)
711 {
712 tcsetattr (0, TCSANOW, &oldtty);
713 fcntl(0, F_SETFL, old_fd0_flags);
714 }
715
716 static void term_init(QemuOpts *opts)
717 {
718 struct termios tty;
719
720 tcgetattr (0, &tty);
721 oldtty = tty;
722 old_fd0_flags = fcntl(0, F_GETFL);
723
724 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
725 |INLCR|IGNCR|ICRNL|IXON);
726 tty.c_oflag |= OPOST;
727 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
728 /* if graphical mode, we allow Ctrl-C handling */
729 if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
730 tty.c_lflag &= ~ISIG;
731 tty.c_cflag &= ~(CSIZE|PARENB);
732 tty.c_cflag |= CS8;
733 tty.c_cc[VMIN] = 1;
734 tty.c_cc[VTIME] = 0;
735
736 tcsetattr (0, TCSANOW, &tty);
737
738 if (!term_atexit_done++)
739 atexit(term_exit);
740
741 fcntl(0, F_SETFL, O_NONBLOCK);
742 }
743
744 static void qemu_chr_close_stdio(struct CharDriverState *chr)
745 {
746 term_exit();
747 stdio_nb_clients--;
748 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
749 fd_chr_close(chr);
750 }
751
752 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
753 {
754 CharDriverState *chr;
755
756 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
757 return NULL;
758 chr = qemu_chr_open_fd(0, 1);
759 chr->chr_close = qemu_chr_close_stdio;
760 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
761 stdio_nb_clients++;
762 term_init(opts);
763
764 return chr;
765 }
766
767 #ifdef __sun__
768 /* Once Solaris has openpty(), this is going to be removed. */
769 static int openpty(int *amaster, int *aslave, char *name,
770 struct termios *termp, struct winsize *winp)
771 {
772 const char *slave;
773 int mfd = -1, sfd = -1;
774
775 *amaster = *aslave = -1;
776
777 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
778 if (mfd < 0)
779 goto err;
780
781 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
782 goto err;
783
784 if ((slave = ptsname(mfd)) == NULL)
785 goto err;
786
787 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
788 goto err;
789
790 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
791 (termp != NULL && tcgetattr(sfd, termp) < 0))
792 goto err;
793
794 if (amaster)
795 *amaster = mfd;
796 if (aslave)
797 *aslave = sfd;
798 if (winp)
799 ioctl(sfd, TIOCSWINSZ, winp);
800
801 return 0;
802
803 err:
804 if (sfd != -1)
805 close(sfd);
806 close(mfd);
807 return -1;
808 }
809
810 static void cfmakeraw (struct termios *termios_p)
811 {
812 termios_p->c_iflag &=
813 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
814 termios_p->c_oflag &= ~OPOST;
815 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
816 termios_p->c_cflag &= ~(CSIZE|PARENB);
817 termios_p->c_cflag |= CS8;
818
819 termios_p->c_cc[VMIN] = 0;
820 termios_p->c_cc[VTIME] = 0;
821 }
822 #endif
823
824 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
825 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
826 || defined(__GLIBC__)
827
828 typedef struct {
829 int fd;
830 int connected;
831 int polling;
832 int read_bytes;
833 QEMUTimer *timer;
834 } PtyCharDriver;
835
836 static void pty_chr_update_read_handler(CharDriverState *chr);
837 static void pty_chr_state(CharDriverState *chr, int connected);
838
839 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
840 {
841 PtyCharDriver *s = chr->opaque;
842
843 if (!s->connected) {
844 /* guest sends data, check for (re-)connect */
845 pty_chr_update_read_handler(chr);
846 return 0;
847 }
848 return send_all(s->fd, buf, len);
849 }
850
851 static int pty_chr_read_poll(void *opaque)
852 {
853 CharDriverState *chr = opaque;
854 PtyCharDriver *s = chr->opaque;
855
856 s->read_bytes = qemu_chr_can_read(chr);
857 return s->read_bytes;
858 }
859
860 static void pty_chr_read(void *opaque)
861 {
862 CharDriverState *chr = opaque;
863 PtyCharDriver *s = chr->opaque;
864 int size, len;
865 uint8_t buf[READ_BUF_LEN];
866
867 len = sizeof(buf);
868 if (len > s->read_bytes)
869 len = s->read_bytes;
870 if (len == 0)
871 return;
872 size = read(s->fd, buf, len);
873 if ((size == -1 && errno == EIO) ||
874 (size == 0)) {
875 pty_chr_state(chr, 0);
876 return;
877 }
878 if (size > 0) {
879 pty_chr_state(chr, 1);
880 qemu_chr_read(chr, buf, size);
881 }
882 }
883
884 static void pty_chr_update_read_handler(CharDriverState *chr)
885 {
886 PtyCharDriver *s = chr->opaque;
887
888 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
889 pty_chr_read, NULL, chr);
890 s->polling = 1;
891 /*
892 * Short timeout here: just need wait long enougth that qemu makes
893 * it through the poll loop once. When reconnected we want a
894 * short timeout so we notice it almost instantly. Otherwise
895 * read() gives us -EIO instantly, making pty_chr_state() reset the
896 * timeout to the normal (much longer) poll interval before the
897 * timer triggers.
898 */
899 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
900 }
901
902 static void pty_chr_state(CharDriverState *chr, int connected)
903 {
904 PtyCharDriver *s = chr->opaque;
905
906 if (!connected) {
907 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
908 s->connected = 0;
909 s->polling = 0;
910 /* (re-)connect poll interval for idle guests: once per second.
911 * We check more frequently in case the guests sends data to
912 * the virtual device linked to our pty. */
913 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
914 } else {
915 if (!s->connected)
916 qemu_chr_generic_open(chr);
917 s->connected = 1;
918 }
919 }
920
921 static void pty_chr_timer(void *opaque)
922 {
923 struct CharDriverState *chr = opaque;
924 PtyCharDriver *s = chr->opaque;
925
926 if (s->connected)
927 return;
928 if (s->polling) {
929 /* If we arrive here without polling being cleared due
930 * read returning -EIO, then we are (re-)connected */
931 pty_chr_state(chr, 1);
932 return;
933 }
934
935 /* Next poll ... */
936 pty_chr_update_read_handler(chr);
937 }
938
939 static void pty_chr_close(struct CharDriverState *chr)
940 {
941 PtyCharDriver *s = chr->opaque;
942
943 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
944 close(s->fd);
945 qemu_del_timer(s->timer);
946 qemu_free_timer(s->timer);
947 qemu_free(s);
948 qemu_chr_event(chr, CHR_EVENT_CLOSED);
949 }
950
951 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
952 {
953 CharDriverState *chr;
954 PtyCharDriver *s;
955 struct termios tty;
956 int slave_fd, len;
957 #if defined(__OpenBSD__) || defined(__DragonFly__)
958 char pty_name[PATH_MAX];
959 #define q_ptsname(x) pty_name
960 #else
961 char *pty_name = NULL;
962 #define q_ptsname(x) ptsname(x)
963 #endif
964
965 chr = qemu_mallocz(sizeof(CharDriverState));
966 s = qemu_mallocz(sizeof(PtyCharDriver));
967
968 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
969 return NULL;
970 }
971
972 /* Set raw attributes on the pty. */
973 tcgetattr(slave_fd, &tty);
974 cfmakeraw(&tty);
975 tcsetattr(slave_fd, TCSAFLUSH, &tty);
976 close(slave_fd);
977
978 len = strlen(q_ptsname(s->fd)) + 5;
979 chr->filename = qemu_malloc(len);
980 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
981 qemu_opt_set(opts, "path", q_ptsname(s->fd));
982 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
983
984 chr->opaque = s;
985 chr->chr_write = pty_chr_write;
986 chr->chr_update_read_handler = pty_chr_update_read_handler;
987 chr->chr_close = pty_chr_close;
988
989 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
990
991 return chr;
992 }
993
994 static void tty_serial_init(int fd, int speed,
995 int parity, int data_bits, int stop_bits)
996 {
997 struct termios tty;
998 speed_t spd;
999
1000 #if 0
1001 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1002 speed, parity, data_bits, stop_bits);
1003 #endif
1004 tcgetattr (fd, &tty);
1005
1006 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1007 speed = speed * 10 / 11;
1008 do {
1009 check_speed(50);
1010 check_speed(75);
1011 check_speed(110);
1012 check_speed(134);
1013 check_speed(150);
1014 check_speed(200);
1015 check_speed(300);
1016 check_speed(600);
1017 check_speed(1200);
1018 check_speed(1800);
1019 check_speed(2400);
1020 check_speed(4800);
1021 check_speed(9600);
1022 check_speed(19200);
1023 check_speed(38400);
1024 /* Non-Posix values follow. They may be unsupported on some systems. */
1025 check_speed(57600);
1026 check_speed(115200);
1027 #ifdef B230400
1028 check_speed(230400);
1029 #endif
1030 #ifdef B460800
1031 check_speed(460800);
1032 #endif
1033 #ifdef B500000
1034 check_speed(500000);
1035 #endif
1036 #ifdef B576000
1037 check_speed(576000);
1038 #endif
1039 #ifdef B921600
1040 check_speed(921600);
1041 #endif
1042 #ifdef B1000000
1043 check_speed(1000000);
1044 #endif
1045 #ifdef B1152000
1046 check_speed(1152000);
1047 #endif
1048 #ifdef B1500000
1049 check_speed(1500000);
1050 #endif
1051 #ifdef B2000000
1052 check_speed(2000000);
1053 #endif
1054 #ifdef B2500000
1055 check_speed(2500000);
1056 #endif
1057 #ifdef B3000000
1058 check_speed(3000000);
1059 #endif
1060 #ifdef B3500000
1061 check_speed(3500000);
1062 #endif
1063 #ifdef B4000000
1064 check_speed(4000000);
1065 #endif
1066 spd = B115200;
1067 } while (0);
1068
1069 cfsetispeed(&tty, spd);
1070 cfsetospeed(&tty, spd);
1071
1072 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1073 |INLCR|IGNCR|ICRNL|IXON);
1074 tty.c_oflag |= OPOST;
1075 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1076 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1077 switch(data_bits) {
1078 default:
1079 case 8:
1080 tty.c_cflag |= CS8;
1081 break;
1082 case 7:
1083 tty.c_cflag |= CS7;
1084 break;
1085 case 6:
1086 tty.c_cflag |= CS6;
1087 break;
1088 case 5:
1089 tty.c_cflag |= CS5;
1090 break;
1091 }
1092 switch(parity) {
1093 default:
1094 case 'N':
1095 break;
1096 case 'E':
1097 tty.c_cflag |= PARENB;
1098 break;
1099 case 'O':
1100 tty.c_cflag |= PARENB | PARODD;
1101 break;
1102 }
1103 if (stop_bits == 2)
1104 tty.c_cflag |= CSTOPB;
1105
1106 tcsetattr (fd, TCSANOW, &tty);
1107 }
1108
1109 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1110 {
1111 FDCharDriver *s = chr->opaque;
1112
1113 switch(cmd) {
1114 case CHR_IOCTL_SERIAL_SET_PARAMS:
1115 {
1116 QEMUSerialSetParams *ssp = arg;
1117 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1118 ssp->data_bits, ssp->stop_bits);
1119 }
1120 break;
1121 case CHR_IOCTL_SERIAL_SET_BREAK:
1122 {
1123 int enable = *(int *)arg;
1124 if (enable)
1125 tcsendbreak(s->fd_in, 1);
1126 }
1127 break;
1128 case CHR_IOCTL_SERIAL_GET_TIOCM:
1129 {
1130 int sarg = 0;
1131 int *targ = (int *)arg;
1132 ioctl(s->fd_in, TIOCMGET, &sarg);
1133 *targ = 0;
1134 if (sarg & TIOCM_CTS)
1135 *targ |= CHR_TIOCM_CTS;
1136 if (sarg & TIOCM_CAR)
1137 *targ |= CHR_TIOCM_CAR;
1138 if (sarg & TIOCM_DSR)
1139 *targ |= CHR_TIOCM_DSR;
1140 if (sarg & TIOCM_RI)
1141 *targ |= CHR_TIOCM_RI;
1142 if (sarg & TIOCM_DTR)
1143 *targ |= CHR_TIOCM_DTR;
1144 if (sarg & TIOCM_RTS)
1145 *targ |= CHR_TIOCM_RTS;
1146 }
1147 break;
1148 case CHR_IOCTL_SERIAL_SET_TIOCM:
1149 {
1150 int sarg = *(int *)arg;
1151 int targ = 0;
1152 ioctl(s->fd_in, TIOCMGET, &targ);
1153 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1154 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1155 if (sarg & CHR_TIOCM_CTS)
1156 targ |= TIOCM_CTS;
1157 if (sarg & CHR_TIOCM_CAR)
1158 targ |= TIOCM_CAR;
1159 if (sarg & CHR_TIOCM_DSR)
1160 targ |= TIOCM_DSR;
1161 if (sarg & CHR_TIOCM_RI)
1162 targ |= TIOCM_RI;
1163 if (sarg & CHR_TIOCM_DTR)
1164 targ |= TIOCM_DTR;
1165 if (sarg & CHR_TIOCM_RTS)
1166 targ |= TIOCM_RTS;
1167 ioctl(s->fd_in, TIOCMSET, &targ);
1168 }
1169 break;
1170 default:
1171 return -ENOTSUP;
1172 }
1173 return 0;
1174 }
1175
1176 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1177 {
1178 const char *filename = qemu_opt_get(opts, "path");
1179 CharDriverState *chr;
1180 int fd;
1181
1182 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1183 if (fd < 0) {
1184 return NULL;
1185 }
1186 tty_serial_init(fd, 115200, 'N', 8, 1);
1187 chr = qemu_chr_open_fd(fd, fd);
1188 if (!chr) {
1189 close(fd);
1190 return NULL;
1191 }
1192 chr->chr_ioctl = tty_serial_ioctl;
1193 qemu_chr_generic_open(chr);
1194 return chr;
1195 }
1196 #else /* ! __linux__ && ! __sun__ */
1197 static CharDriverState *qemu_chr_open_pty(void)
1198 {
1199 return NULL;
1200 }
1201 #endif /* __linux__ || __sun__ */
1202
1203 #if defined(__linux__)
1204 typedef struct {
1205 int fd;
1206 int mode;
1207 } ParallelCharDriver;
1208
1209 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1210 {
1211 if (s->mode != mode) {
1212 int m = mode;
1213 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1214 return 0;
1215 s->mode = mode;
1216 }
1217 return 1;
1218 }
1219
1220 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1221 {
1222 ParallelCharDriver *drv = chr->opaque;
1223 int fd = drv->fd;
1224 uint8_t b;
1225
1226 switch(cmd) {
1227 case CHR_IOCTL_PP_READ_DATA:
1228 if (ioctl(fd, PPRDATA, &b) < 0)
1229 return -ENOTSUP;
1230 *(uint8_t *)arg = b;
1231 break;
1232 case CHR_IOCTL_PP_WRITE_DATA:
1233 b = *(uint8_t *)arg;
1234 if (ioctl(fd, PPWDATA, &b) < 0)
1235 return -ENOTSUP;
1236 break;
1237 case CHR_IOCTL_PP_READ_CONTROL:
1238 if (ioctl(fd, PPRCONTROL, &b) < 0)
1239 return -ENOTSUP;
1240 /* Linux gives only the lowest bits, and no way to know data
1241 direction! For better compatibility set the fixed upper
1242 bits. */
1243 *(uint8_t *)arg = b | 0xc0;
1244 break;
1245 case CHR_IOCTL_PP_WRITE_CONTROL:
1246 b = *(uint8_t *)arg;
1247 if (ioctl(fd, PPWCONTROL, &b) < 0)
1248 return -ENOTSUP;
1249 break;
1250 case CHR_IOCTL_PP_READ_STATUS:
1251 if (ioctl(fd, PPRSTATUS, &b) < 0)
1252 return -ENOTSUP;
1253 *(uint8_t *)arg = b;
1254 break;
1255 case CHR_IOCTL_PP_DATA_DIR:
1256 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1257 return -ENOTSUP;
1258 break;
1259 case CHR_IOCTL_PP_EPP_READ_ADDR:
1260 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1261 struct ParallelIOArg *parg = arg;
1262 int n = read(fd, parg->buffer, parg->count);
1263 if (n != parg->count) {
1264 return -EIO;
1265 }
1266 }
1267 break;
1268 case CHR_IOCTL_PP_EPP_READ:
1269 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1270 struct ParallelIOArg *parg = arg;
1271 int n = read(fd, parg->buffer, parg->count);
1272 if (n != parg->count) {
1273 return -EIO;
1274 }
1275 }
1276 break;
1277 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1278 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1279 struct ParallelIOArg *parg = arg;
1280 int n = write(fd, parg->buffer, parg->count);
1281 if (n != parg->count) {
1282 return -EIO;
1283 }
1284 }
1285 break;
1286 case CHR_IOCTL_PP_EPP_WRITE:
1287 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1288 struct ParallelIOArg *parg = arg;
1289 int n = write(fd, parg->buffer, parg->count);
1290 if (n != parg->count) {
1291 return -EIO;
1292 }
1293 }
1294 break;
1295 default:
1296 return -ENOTSUP;
1297 }
1298 return 0;
1299 }
1300
1301 static void pp_close(CharDriverState *chr)
1302 {
1303 ParallelCharDriver *drv = chr->opaque;
1304 int fd = drv->fd;
1305
1306 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1307 ioctl(fd, PPRELEASE);
1308 close(fd);
1309 qemu_free(drv);
1310 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1311 }
1312
1313 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1314 {
1315 const char *filename = qemu_opt_get(opts, "path");
1316 CharDriverState *chr;
1317 ParallelCharDriver *drv;
1318 int fd;
1319
1320 TFR(fd = open(filename, O_RDWR));
1321 if (fd < 0)
1322 return NULL;
1323
1324 if (ioctl(fd, PPCLAIM) < 0) {
1325 close(fd);
1326 return NULL;
1327 }
1328
1329 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1330 drv->fd = fd;
1331 drv->mode = IEEE1284_MODE_COMPAT;
1332
1333 chr = qemu_mallocz(sizeof(CharDriverState));
1334 chr->chr_write = null_chr_write;
1335 chr->chr_ioctl = pp_ioctl;
1336 chr->chr_close = pp_close;
1337 chr->opaque = drv;
1338
1339 qemu_chr_generic_open(chr);
1340
1341 return chr;
1342 }
1343 #endif /* __linux__ */
1344
1345 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1346 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1347 {
1348 int fd = (int)chr->opaque;
1349 uint8_t b;
1350
1351 switch(cmd) {
1352 case CHR_IOCTL_PP_READ_DATA:
1353 if (ioctl(fd, PPIGDATA, &b) < 0)
1354 return -ENOTSUP;
1355 *(uint8_t *)arg = b;
1356 break;
1357 case CHR_IOCTL_PP_WRITE_DATA:
1358 b = *(uint8_t *)arg;
1359 if (ioctl(fd, PPISDATA, &b) < 0)
1360 return -ENOTSUP;
1361 break;
1362 case CHR_IOCTL_PP_READ_CONTROL:
1363 if (ioctl(fd, PPIGCTRL, &b) < 0)
1364 return -ENOTSUP;
1365 *(uint8_t *)arg = b;
1366 break;
1367 case CHR_IOCTL_PP_WRITE_CONTROL:
1368 b = *(uint8_t *)arg;
1369 if (ioctl(fd, PPISCTRL, &b) < 0)
1370 return -ENOTSUP;
1371 break;
1372 case CHR_IOCTL_PP_READ_STATUS:
1373 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1374 return -ENOTSUP;
1375 *(uint8_t *)arg = b;
1376 break;
1377 default:
1378 return -ENOTSUP;
1379 }
1380 return 0;
1381 }
1382
1383 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1384 {
1385 const char *filename = qemu_opt_get(opts, "path");
1386 CharDriverState *chr;
1387 int fd;
1388
1389 fd = open(filename, O_RDWR);
1390 if (fd < 0)
1391 return NULL;
1392
1393 chr = qemu_mallocz(sizeof(CharDriverState));
1394 chr->opaque = (void *)fd;
1395 chr->chr_write = null_chr_write;
1396 chr->chr_ioctl = pp_ioctl;
1397 return chr;
1398 }
1399 #endif
1400
1401 #else /* _WIN32 */
1402
1403 typedef struct {
1404 int max_size;
1405 HANDLE hcom, hrecv, hsend;
1406 OVERLAPPED orecv, osend;
1407 BOOL fpipe;
1408 DWORD len;
1409 } WinCharState;
1410
1411 #define NSENDBUF 2048
1412 #define NRECVBUF 2048
1413 #define MAXCONNECT 1
1414 #define NTIMEOUT 5000
1415
1416 static int win_chr_poll(void *opaque);
1417 static int win_chr_pipe_poll(void *opaque);
1418
1419 static void win_chr_close(CharDriverState *chr)
1420 {
1421 WinCharState *s = chr->opaque;
1422
1423 if (s->hsend) {
1424 CloseHandle(s->hsend);
1425 s->hsend = NULL;
1426 }
1427 if (s->hrecv) {
1428 CloseHandle(s->hrecv);
1429 s->hrecv = NULL;
1430 }
1431 if (s->hcom) {
1432 CloseHandle(s->hcom);
1433 s->hcom = NULL;
1434 }
1435 if (s->fpipe)
1436 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1437 else
1438 qemu_del_polling_cb(win_chr_poll, chr);
1439
1440 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1441 }
1442
1443 static int win_chr_init(CharDriverState *chr, const char *filename)
1444 {
1445 WinCharState *s = chr->opaque;
1446 COMMCONFIG comcfg;
1447 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1448 COMSTAT comstat;
1449 DWORD size;
1450 DWORD err;
1451
1452 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1453 if (!s->hsend) {
1454 fprintf(stderr, "Failed CreateEvent\n");
1455 goto fail;
1456 }
1457 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1458 if (!s->hrecv) {
1459 fprintf(stderr, "Failed CreateEvent\n");
1460 goto fail;
1461 }
1462
1463 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1464 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1465 if (s->hcom == INVALID_HANDLE_VALUE) {
1466 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1467 s->hcom = NULL;
1468 goto fail;
1469 }
1470
1471 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1472 fprintf(stderr, "Failed SetupComm\n");
1473 goto fail;
1474 }
1475
1476 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1477 size = sizeof(COMMCONFIG);
1478 GetDefaultCommConfig(filename, &comcfg, &size);
1479 comcfg.dcb.DCBlength = sizeof(DCB);
1480 CommConfigDialog(filename, NULL, &comcfg);
1481
1482 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1483 fprintf(stderr, "Failed SetCommState\n");
1484 goto fail;
1485 }
1486
1487 if (!SetCommMask(s->hcom, EV_ERR)) {
1488 fprintf(stderr, "Failed SetCommMask\n");
1489 goto fail;
1490 }
1491
1492 cto.ReadIntervalTimeout = MAXDWORD;
1493 if (!SetCommTimeouts(s->hcom, &cto)) {
1494 fprintf(stderr, "Failed SetCommTimeouts\n");
1495 goto fail;
1496 }
1497
1498 if (!ClearCommError(s->hcom, &err, &comstat)) {
1499 fprintf(stderr, "Failed ClearCommError\n");
1500 goto fail;
1501 }
1502 qemu_add_polling_cb(win_chr_poll, chr);
1503 return 0;
1504
1505 fail:
1506 win_chr_close(chr);
1507 return -1;
1508 }
1509
1510 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1511 {
1512 WinCharState *s = chr->opaque;
1513 DWORD len, ret, size, err;
1514
1515 len = len1;
1516 ZeroMemory(&s->osend, sizeof(s->osend));
1517 s->osend.hEvent = s->hsend;
1518 while (len > 0) {
1519 if (s->hsend)
1520 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1521 else
1522 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1523 if (!ret) {
1524 err = GetLastError();
1525 if (err == ERROR_IO_PENDING) {
1526 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1527 if (ret) {
1528 buf += size;
1529 len -= size;
1530 } else {
1531 break;
1532 }
1533 } else {
1534 break;
1535 }
1536 } else {
1537 buf += size;
1538 len -= size;
1539 }
1540 }
1541 return len1 - len;
1542 }
1543
1544 static int win_chr_read_poll(CharDriverState *chr)
1545 {
1546 WinCharState *s = chr->opaque;
1547
1548 s->max_size = qemu_chr_can_read(chr);
1549 return s->max_size;
1550 }
1551
1552 static void win_chr_readfile(CharDriverState *chr)
1553 {
1554 WinCharState *s = chr->opaque;
1555 int ret, err;
1556 uint8_t buf[READ_BUF_LEN];
1557 DWORD size;
1558
1559 ZeroMemory(&s->orecv, sizeof(s->orecv));
1560 s->orecv.hEvent = s->hrecv;
1561 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1562 if (!ret) {
1563 err = GetLastError();
1564 if (err == ERROR_IO_PENDING) {
1565 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1566 }
1567 }
1568
1569 if (size > 0) {
1570 qemu_chr_read(chr, buf, size);
1571 }
1572 }
1573
1574 static void win_chr_read(CharDriverState *chr)
1575 {
1576 WinCharState *s = chr->opaque;
1577
1578 if (s->len > s->max_size)
1579 s->len = s->max_size;
1580 if (s->len == 0)
1581 return;
1582
1583 win_chr_readfile(chr);
1584 }
1585
1586 static int win_chr_poll(void *opaque)
1587 {
1588 CharDriverState *chr = opaque;
1589 WinCharState *s = chr->opaque;
1590 COMSTAT status;
1591 DWORD comerr;
1592
1593 ClearCommError(s->hcom, &comerr, &status);
1594 if (status.cbInQue > 0) {
1595 s->len = status.cbInQue;
1596 win_chr_read_poll(chr);
1597 win_chr_read(chr);
1598 return 1;
1599 }
1600 return 0;
1601 }
1602
1603 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1604 {
1605 const char *filename = qemu_opt_get(opts, "path");
1606 CharDriverState *chr;
1607 WinCharState *s;
1608
1609 chr = qemu_mallocz(sizeof(CharDriverState));
1610 s = qemu_mallocz(sizeof(WinCharState));
1611 chr->opaque = s;
1612 chr->chr_write = win_chr_write;
1613 chr->chr_close = win_chr_close;
1614
1615 if (win_chr_init(chr, filename) < 0) {
1616 free(s);
1617 free(chr);
1618 return NULL;
1619 }
1620 qemu_chr_generic_open(chr);
1621 return chr;
1622 }
1623
1624 static int win_chr_pipe_poll(void *opaque)
1625 {
1626 CharDriverState *chr = opaque;
1627 WinCharState *s = chr->opaque;
1628 DWORD size;
1629
1630 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1631 if (size > 0) {
1632 s->len = size;
1633 win_chr_read_poll(chr);
1634 win_chr_read(chr);
1635 return 1;
1636 }
1637 return 0;
1638 }
1639
1640 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1641 {
1642 WinCharState *s = chr->opaque;
1643 OVERLAPPED ov;
1644 int ret;
1645 DWORD size;
1646 char openname[256];
1647
1648 s->fpipe = TRUE;
1649
1650 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1651 if (!s->hsend) {
1652 fprintf(stderr, "Failed CreateEvent\n");
1653 goto fail;
1654 }
1655 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1656 if (!s->hrecv) {
1657 fprintf(stderr, "Failed CreateEvent\n");
1658 goto fail;
1659 }
1660
1661 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1662 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1663 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1664 PIPE_WAIT,
1665 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1666 if (s->hcom == INVALID_HANDLE_VALUE) {
1667 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1668 s->hcom = NULL;
1669 goto fail;
1670 }
1671
1672 ZeroMemory(&ov, sizeof(ov));
1673 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1674 ret = ConnectNamedPipe(s->hcom, &ov);
1675 if (ret) {
1676 fprintf(stderr, "Failed ConnectNamedPipe\n");
1677 goto fail;
1678 }
1679
1680 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1681 if (!ret) {
1682 fprintf(stderr, "Failed GetOverlappedResult\n");
1683 if (ov.hEvent) {
1684 CloseHandle(ov.hEvent);
1685 ov.hEvent = NULL;
1686 }
1687 goto fail;
1688 }
1689
1690 if (ov.hEvent) {
1691 CloseHandle(ov.hEvent);
1692 ov.hEvent = NULL;
1693 }
1694 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1695 return 0;
1696
1697 fail:
1698 win_chr_close(chr);
1699 return -1;
1700 }
1701
1702
1703 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1704 {
1705 const char *filename = qemu_opt_get(opts, "path");
1706 CharDriverState *chr;
1707 WinCharState *s;
1708
1709 chr = qemu_mallocz(sizeof(CharDriverState));
1710 s = qemu_mallocz(sizeof(WinCharState));
1711 chr->opaque = s;
1712 chr->chr_write = win_chr_write;
1713 chr->chr_close = win_chr_close;
1714
1715 if (win_chr_pipe_init(chr, filename) < 0) {
1716 free(s);
1717 free(chr);
1718 return NULL;
1719 }
1720 qemu_chr_generic_open(chr);
1721 return chr;
1722 }
1723
1724 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1725 {
1726 CharDriverState *chr;
1727 WinCharState *s;
1728
1729 chr = qemu_mallocz(sizeof(CharDriverState));
1730 s = qemu_mallocz(sizeof(WinCharState));
1731 s->hcom = fd_out;
1732 chr->opaque = s;
1733 chr->chr_write = win_chr_write;
1734 qemu_chr_generic_open(chr);
1735 return chr;
1736 }
1737
1738 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1739 {
1740 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1741 }
1742
1743 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1744 {
1745 const char *file_out = qemu_opt_get(opts, "path");
1746 HANDLE fd_out;
1747
1748 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1749 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1750 if (fd_out == INVALID_HANDLE_VALUE)
1751 return NULL;
1752
1753 return qemu_chr_open_win_file(fd_out);
1754 }
1755 #endif /* !_WIN32 */
1756
1757 /***********************************************************/
1758 /* UDP Net console */
1759
1760 typedef struct {
1761 int fd;
1762 uint8_t buf[READ_BUF_LEN];
1763 int bufcnt;
1764 int bufptr;
1765 int max_size;
1766 } NetCharDriver;
1767
1768 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1769 {
1770 NetCharDriver *s = chr->opaque;
1771
1772 return send(s->fd, (const void *)buf, len, 0);
1773 }
1774
1775 static int udp_chr_read_poll(void *opaque)
1776 {
1777 CharDriverState *chr = opaque;
1778 NetCharDriver *s = chr->opaque;
1779
1780 s->max_size = qemu_chr_can_read(chr);
1781
1782 /* If there were any stray characters in the queue process them
1783 * first
1784 */
1785 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1786 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1787 s->bufptr++;
1788 s->max_size = qemu_chr_can_read(chr);
1789 }
1790 return s->max_size;
1791 }
1792
1793 static void udp_chr_read(void *opaque)
1794 {
1795 CharDriverState *chr = opaque;
1796 NetCharDriver *s = chr->opaque;
1797
1798 if (s->max_size == 0)
1799 return;
1800 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1801 s->bufptr = s->bufcnt;
1802 if (s->bufcnt <= 0)
1803 return;
1804
1805 s->bufptr = 0;
1806 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1807 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1808 s->bufptr++;
1809 s->max_size = qemu_chr_can_read(chr);
1810 }
1811 }
1812
1813 static void udp_chr_update_read_handler(CharDriverState *chr)
1814 {
1815 NetCharDriver *s = chr->opaque;
1816
1817 if (s->fd >= 0) {
1818 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1819 udp_chr_read, NULL, chr);
1820 }
1821 }
1822
1823 static void udp_chr_close(CharDriverState *chr)
1824 {
1825 NetCharDriver *s = chr->opaque;
1826 if (s->fd >= 0) {
1827 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1828 closesocket(s->fd);
1829 }
1830 qemu_free(s);
1831 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1832 }
1833
1834 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1835 {
1836 CharDriverState *chr = NULL;
1837 NetCharDriver *s = NULL;
1838 int fd = -1;
1839
1840 chr = qemu_mallocz(sizeof(CharDriverState));
1841 s = qemu_mallocz(sizeof(NetCharDriver));
1842
1843 fd = inet_dgram_opts(opts);
1844 if (fd < 0) {
1845 fprintf(stderr, "inet_dgram_opts failed\n");
1846 goto return_err;
1847 }
1848
1849 s->fd = fd;
1850 s->bufcnt = 0;
1851 s->bufptr = 0;
1852 chr->opaque = s;
1853 chr->chr_write = udp_chr_write;
1854 chr->chr_update_read_handler = udp_chr_update_read_handler;
1855 chr->chr_close = udp_chr_close;
1856 return chr;
1857
1858 return_err:
1859 if (chr)
1860 free(chr);
1861 if (s)
1862 free(s);
1863 if (fd >= 0)
1864 closesocket(fd);
1865 return NULL;
1866 }
1867
1868 /***********************************************************/
1869 /* TCP Net console */
1870
1871 typedef struct {
1872 int fd, listen_fd;
1873 int connected;
1874 int max_size;
1875 int do_telnetopt;
1876 int do_nodelay;
1877 int is_unix;
1878 int msgfd;
1879 } TCPCharDriver;
1880
1881 static void tcp_chr_accept(void *opaque);
1882
1883 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1884 {
1885 TCPCharDriver *s = chr->opaque;
1886 if (s->connected) {
1887 return send_all(s->fd, buf, len);
1888 } else {
1889 /* XXX: indicate an error ? */
1890 return len;
1891 }
1892 }
1893
1894 static int tcp_chr_read_poll(void *opaque)
1895 {
1896 CharDriverState *chr = opaque;
1897 TCPCharDriver *s = chr->opaque;
1898 if (!s->connected)
1899 return 0;
1900 s->max_size = qemu_chr_can_read(chr);
1901 return s->max_size;
1902 }
1903
1904 #define IAC 255
1905 #define IAC_BREAK 243
1906 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1907 TCPCharDriver *s,
1908 uint8_t *buf, int *size)
1909 {
1910 /* Handle any telnet client's basic IAC options to satisfy char by
1911 * char mode with no echo. All IAC options will be removed from
1912 * the buf and the do_telnetopt variable will be used to track the
1913 * state of the width of the IAC information.
1914 *
1915 * IAC commands come in sets of 3 bytes with the exception of the
1916 * "IAC BREAK" command and the double IAC.
1917 */
1918
1919 int i;
1920 int j = 0;
1921
1922 for (i = 0; i < *size; i++) {
1923 if (s->do_telnetopt > 1) {
1924 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1925 /* Double IAC means send an IAC */
1926 if (j != i)
1927 buf[j] = buf[i];
1928 j++;
1929 s->do_telnetopt = 1;
1930 } else {
1931 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1932 /* Handle IAC break commands by sending a serial break */
1933 qemu_chr_event(chr, CHR_EVENT_BREAK);
1934 s->do_telnetopt++;
1935 }
1936 s->do_telnetopt++;
1937 }
1938 if (s->do_telnetopt >= 4) {
1939 s->do_telnetopt = 1;
1940 }
1941 } else {
1942 if ((unsigned char)buf[i] == IAC) {
1943 s->do_telnetopt = 2;
1944 } else {
1945 if (j != i)
1946 buf[j] = buf[i];
1947 j++;
1948 }
1949 }
1950 }
1951 *size = j;
1952 }
1953
1954 static int tcp_get_msgfd(CharDriverState *chr)
1955 {
1956 TCPCharDriver *s = chr->opaque;
1957
1958 return s->msgfd;
1959 }
1960
1961 #ifndef _WIN32
1962 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1963 {
1964 TCPCharDriver *s = chr->opaque;
1965 struct cmsghdr *cmsg;
1966
1967 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1968 int fd;
1969
1970 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
1971 cmsg->cmsg_level != SOL_SOCKET ||
1972 cmsg->cmsg_type != SCM_RIGHTS)
1973 continue;
1974
1975 fd = *((int *)CMSG_DATA(cmsg));
1976 if (fd < 0)
1977 continue;
1978
1979 if (s->msgfd != -1)
1980 close(s->msgfd);
1981 s->msgfd = fd;
1982 }
1983 }
1984
1985 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1986 {
1987 TCPCharDriver *s = chr->opaque;
1988 struct msghdr msg = { NULL, };
1989 struct iovec iov[1];
1990 union {
1991 struct cmsghdr cmsg;
1992 char control[CMSG_SPACE(sizeof(int))];
1993 } msg_control;
1994 ssize_t ret;
1995
1996 iov[0].iov_base = buf;
1997 iov[0].iov_len = len;
1998
1999 msg.msg_iov = iov;
2000 msg.msg_iovlen = 1;
2001 msg.msg_control = &msg_control;
2002 msg.msg_controllen = sizeof(msg_control);
2003
2004 ret = recvmsg(s->fd, &msg, 0);
2005 if (ret > 0 && s->is_unix)
2006 unix_process_msgfd(chr, &msg);
2007
2008 return ret;
2009 }
2010 #else
2011 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2012 {
2013 TCPCharDriver *s = chr->opaque;
2014 return recv(s->fd, buf, len, 0);
2015 }
2016 #endif
2017
2018 static void tcp_chr_read(void *opaque)
2019 {
2020 CharDriverState *chr = opaque;
2021 TCPCharDriver *s = chr->opaque;
2022 uint8_t buf[READ_BUF_LEN];
2023 int len, size;
2024
2025 if (!s->connected || s->max_size <= 0)
2026 return;
2027 len = sizeof(buf);
2028 if (len > s->max_size)
2029 len = s->max_size;
2030 size = tcp_chr_recv(chr, (void *)buf, len);
2031 if (size == 0) {
2032 /* connection closed */
2033 s->connected = 0;
2034 if (s->listen_fd >= 0) {
2035 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2036 }
2037 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2038 closesocket(s->fd);
2039 s->fd = -1;
2040 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2041 } else if (size > 0) {
2042 if (s->do_telnetopt)
2043 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2044 if (size > 0)
2045 qemu_chr_read(chr, buf, size);
2046 if (s->msgfd != -1) {
2047 close(s->msgfd);
2048 s->msgfd = -1;
2049 }
2050 }
2051 }
2052
2053 static void tcp_chr_connect(void *opaque)
2054 {
2055 CharDriverState *chr = opaque;
2056 TCPCharDriver *s = chr->opaque;
2057
2058 s->connected = 1;
2059 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2060 tcp_chr_read, NULL, chr);
2061 qemu_chr_generic_open(chr);
2062 }
2063
2064 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2065 static void tcp_chr_telnet_init(int fd)
2066 {
2067 char buf[3];
2068 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2069 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2070 send(fd, (char *)buf, 3, 0);
2071 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2072 send(fd, (char *)buf, 3, 0);
2073 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2074 send(fd, (char *)buf, 3, 0);
2075 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2076 send(fd, (char *)buf, 3, 0);
2077 }
2078
2079 static void socket_set_nodelay(int fd)
2080 {
2081 int val = 1;
2082 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2083 }
2084
2085 static void tcp_chr_accept(void *opaque)
2086 {
2087 CharDriverState *chr = opaque;
2088 TCPCharDriver *s = chr->opaque;
2089 struct sockaddr_in saddr;
2090 #ifndef _WIN32
2091 struct sockaddr_un uaddr;
2092 #endif
2093 struct sockaddr *addr;
2094 socklen_t len;
2095 int fd;
2096
2097 for(;;) {
2098 #ifndef _WIN32
2099 if (s->is_unix) {
2100 len = sizeof(uaddr);
2101 addr = (struct sockaddr *)&uaddr;
2102 } else
2103 #endif
2104 {
2105 len = sizeof(saddr);
2106 addr = (struct sockaddr *)&saddr;
2107 }
2108 fd = qemu_accept(s->listen_fd, addr, &len);
2109 if (fd < 0 && errno != EINTR) {
2110 return;
2111 } else if (fd >= 0) {
2112 if (s->do_telnetopt)
2113 tcp_chr_telnet_init(fd);
2114 break;
2115 }
2116 }
2117 socket_set_nonblock(fd);
2118 if (s->do_nodelay)
2119 socket_set_nodelay(fd);
2120 s->fd = fd;
2121 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2122 tcp_chr_connect(chr);
2123 }
2124
2125 static void tcp_chr_close(CharDriverState *chr)
2126 {
2127 TCPCharDriver *s = chr->opaque;
2128 if (s->fd >= 0) {
2129 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2130 closesocket(s->fd);
2131 }
2132 if (s->listen_fd >= 0) {
2133 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2134 closesocket(s->listen_fd);
2135 }
2136 qemu_free(s);
2137 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2138 }
2139
2140 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2141 {
2142 CharDriverState *chr = NULL;
2143 TCPCharDriver *s = NULL;
2144 int fd = -1;
2145 int is_listen;
2146 int is_waitconnect;
2147 int do_nodelay;
2148 int is_unix;
2149 int is_telnet;
2150
2151 is_listen = qemu_opt_get_bool(opts, "server", 0);
2152 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2153 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2154 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2155 is_unix = qemu_opt_get(opts, "path") != NULL;
2156 if (!is_listen)
2157 is_waitconnect = 0;
2158
2159 chr = qemu_mallocz(sizeof(CharDriverState));
2160 s = qemu_mallocz(sizeof(TCPCharDriver));
2161
2162 if (is_unix) {
2163 if (is_listen) {
2164 fd = unix_listen_opts(opts);
2165 } else {
2166 fd = unix_connect_opts(opts);
2167 }
2168 } else {
2169 if (is_listen) {
2170 fd = inet_listen_opts(opts, 0);
2171 } else {
2172 fd = inet_connect_opts(opts);
2173 }
2174 }
2175 if (fd < 0)
2176 goto fail;
2177
2178 if (!is_waitconnect)
2179 socket_set_nonblock(fd);
2180
2181 s->connected = 0;
2182 s->fd = -1;
2183 s->listen_fd = -1;
2184 s->msgfd = -1;
2185 s->is_unix = is_unix;
2186 s->do_nodelay = do_nodelay && !is_unix;
2187
2188 chr->opaque = s;
2189 chr->chr_write = tcp_chr_write;
2190 chr->chr_close = tcp_chr_close;
2191 chr->get_msgfd = tcp_get_msgfd;
2192
2193 if (is_listen) {
2194 s->listen_fd = fd;
2195 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2196 if (is_telnet)
2197 s->do_telnetopt = 1;
2198
2199 } else {
2200 s->connected = 1;
2201 s->fd = fd;
2202 socket_set_nodelay(fd);
2203 tcp_chr_connect(chr);
2204 }
2205
2206 /* for "info chardev" monitor command */
2207 chr->filename = qemu_malloc(256);
2208 if (is_unix) {
2209 snprintf(chr->filename, 256, "unix:%s%s",
2210 qemu_opt_get(opts, "path"),
2211 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2212 } else if (is_telnet) {
2213 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2214 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2215 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2216 } else {
2217 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2218 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2219 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2220 }
2221
2222 if (is_listen && is_waitconnect) {
2223 printf("QEMU waiting for connection on: %s\n",
2224 chr->filename);
2225 tcp_chr_accept(chr);
2226 socket_set_nonblock(s->listen_fd);
2227 }
2228 return chr;
2229
2230 fail:
2231 if (fd >= 0)
2232 closesocket(fd);
2233 qemu_free(s);
2234 qemu_free(chr);
2235 return NULL;
2236 }
2237
2238 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2239 {
2240 char host[65], port[33], width[8], height[8];
2241 int pos;
2242 const char *p;
2243 QemuOpts *opts;
2244
2245 opts = qemu_opts_create(&qemu_chardev_opts, label, 1);
2246 if (NULL == opts)
2247 return NULL;
2248
2249 if (strstart(filename, "mon:", &p)) {
2250 filename = p;
2251 qemu_opt_set(opts, "mux", "on");
2252 }
2253
2254 if (strcmp(filename, "null") == 0 ||
2255 strcmp(filename, "pty") == 0 ||
2256 strcmp(filename, "msmouse") == 0 ||
2257 strcmp(filename, "braille") == 0 ||
2258 strcmp(filename, "stdio") == 0) {
2259 qemu_opt_set(opts, "backend", filename);
2260 return opts;
2261 }
2262 if (strstart(filename, "vc", &p)) {
2263 qemu_opt_set(opts, "backend", "vc");
2264 if (*p == ':') {
2265 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2266 /* pixels */
2267 qemu_opt_set(opts, "width", width);
2268 qemu_opt_set(opts, "height", height);
2269 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2270 /* chars */
2271 qemu_opt_set(opts, "cols", width);
2272 qemu_opt_set(opts, "rows", height);
2273 } else {
2274 goto fail;
2275 }
2276 }
2277 return opts;
2278 }
2279 if (strcmp(filename, "con:") == 0) {
2280 qemu_opt_set(opts, "backend", "console");
2281 return opts;
2282 }
2283 if (strstart(filename, "COM", NULL)) {
2284 qemu_opt_set(opts, "backend", "serial");
2285 qemu_opt_set(opts, "path", filename);
2286 return opts;
2287 }
2288 if (strstart(filename, "file:", &p)) {
2289 qemu_opt_set(opts, "backend", "file");
2290 qemu_opt_set(opts, "path", p);
2291 return opts;
2292 }
2293 if (strstart(filename, "pipe:", &p)) {
2294 qemu_opt_set(opts, "backend", "pipe");
2295 qemu_opt_set(opts, "path", p);
2296 return opts;
2297 }
2298 if (strstart(filename, "tcp:", &p) ||
2299 strstart(filename, "telnet:", &p)) {
2300 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2301 host[0] = 0;
2302 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2303 goto fail;
2304 }
2305 qemu_opt_set(opts, "backend", "socket");
2306 qemu_opt_set(opts, "host", host);
2307 qemu_opt_set(opts, "port", port);
2308 if (p[pos] == ',') {
2309 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2310 goto fail;
2311 }
2312 if (strstart(filename, "telnet:", &p))
2313 qemu_opt_set(opts, "telnet", "on");
2314 return opts;
2315 }
2316 if (strstart(filename, "udp:", &p)) {
2317 qemu_opt_set(opts, "backend", "udp");
2318 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2319 host[0] = 0;
2320 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2321 fprintf(stderr, "udp #1\n");
2322 goto fail;
2323 }
2324 }
2325 qemu_opt_set(opts, "host", host);
2326 qemu_opt_set(opts, "port", port);
2327 if (p[pos] == '@') {
2328 p += pos + 1;
2329 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2330 host[0] = 0;
2331 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2332 fprintf(stderr, "udp #2\n");
2333 goto fail;
2334 }
2335 }
2336 qemu_opt_set(opts, "localaddr", host);
2337 qemu_opt_set(opts, "localport", port);
2338 }
2339 return opts;
2340 }
2341 if (strstart(filename, "unix:", &p)) {
2342 qemu_opt_set(opts, "backend", "socket");
2343 if (qemu_opts_do_parse(opts, p, "path") != 0)
2344 goto fail;
2345 return opts;
2346 }
2347 if (strstart(filename, "/dev/parport", NULL) ||
2348 strstart(filename, "/dev/ppi", NULL)) {
2349 qemu_opt_set(opts, "backend", "parport");
2350 qemu_opt_set(opts, "path", filename);
2351 return opts;
2352 }
2353 if (strstart(filename, "/dev/", NULL)) {
2354 qemu_opt_set(opts, "backend", "tty");
2355 qemu_opt_set(opts, "path", filename);
2356 return opts;
2357 }
2358
2359 fail:
2360 fprintf(stderr, "%s: fail on \"%s\"\n", __FUNCTION__, filename);
2361 qemu_opts_del(opts);
2362 return NULL;
2363 }
2364
2365 static const struct {
2366 const char *name;
2367 CharDriverState *(*open)(QemuOpts *opts);
2368 } backend_table[] = {
2369 { .name = "null", .open = qemu_chr_open_null },
2370 { .name = "socket", .open = qemu_chr_open_socket },
2371 { .name = "udp", .open = qemu_chr_open_udp },
2372 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2373 { .name = "vc", .open = text_console_init },
2374 #ifdef _WIN32
2375 { .name = "file", .open = qemu_chr_open_win_file_out },
2376 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2377 { .name = "console", .open = qemu_chr_open_win_con },
2378 { .name = "serial", .open = qemu_chr_open_win },
2379 #else
2380 { .name = "file", .open = qemu_chr_open_file_out },
2381 { .name = "pipe", .open = qemu_chr_open_pipe },
2382 { .name = "pty", .open = qemu_chr_open_pty },
2383 { .name = "stdio", .open = qemu_chr_open_stdio },
2384 #endif
2385 #ifdef CONFIG_BRLAPI
2386 { .name = "braille", .open = chr_baum_init },
2387 #endif
2388 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2389 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2390 || defined(__FreeBSD_kernel__)
2391 { .name = "tty", .open = qemu_chr_open_tty },
2392 #endif
2393 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2394 || defined(__FreeBSD_kernel__)
2395 { .name = "parport", .open = qemu_chr_open_pp },
2396 #endif
2397 };
2398
2399 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2400 void (*init)(struct CharDriverState *s))
2401 {
2402 CharDriverState *chr;
2403 int i;
2404
2405 if (qemu_opts_id(opts) == NULL) {
2406 fprintf(stderr, "chardev: no id specified\n");
2407 return NULL;
2408 }
2409
2410 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2411 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2412 break;
2413 }
2414 if (i == ARRAY_SIZE(backend_table)) {
2415 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2416 qemu_opt_get(opts, "backend"));
2417 return NULL;
2418 }
2419
2420 chr = backend_table[i].open(opts);
2421 if (!chr) {
2422 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2423 qemu_opt_get(opts, "backend"));
2424 return NULL;
2425 }
2426
2427 if (!chr->filename)
2428 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2429 chr->init = init;
2430 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2431
2432 if (qemu_opt_get_bool(opts, "mux", 0)) {
2433 CharDriverState *base = chr;
2434 int len = strlen(qemu_opts_id(opts)) + 6;
2435 base->label = qemu_malloc(len);
2436 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2437 chr = qemu_chr_open_mux(base);
2438 chr->filename = base->filename;
2439 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2440 }
2441 chr->label = qemu_strdup(qemu_opts_id(opts));
2442 return chr;
2443 }
2444
2445 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2446 {
2447 const char *p;
2448 CharDriverState *chr;
2449 QemuOpts *opts;
2450
2451 if (strstart(filename, "chardev:", &p)) {
2452 return qemu_chr_find(p);
2453 }
2454
2455 opts = qemu_chr_parse_compat(label, filename);
2456 if (!opts)
2457 return NULL;
2458
2459 chr = qemu_chr_open_opts(opts, init);
2460 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2461 monitor_init(chr, MONITOR_USE_READLINE);
2462 }
2463 return chr;
2464 }
2465
2466 void qemu_chr_close(CharDriverState *chr)
2467 {
2468 QTAILQ_REMOVE(&chardevs, chr, next);
2469 if (chr->chr_close)
2470 chr->chr_close(chr);
2471 qemu_free(chr->filename);
2472 qemu_free(chr->label);
2473 qemu_free(chr);
2474 }
2475
2476 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2477 {
2478 QDict *chr_dict;
2479 Monitor *mon = opaque;
2480
2481 chr_dict = qobject_to_qdict(obj);
2482 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2483 qdict_get_str(chr_dict, "filename"));
2484 }
2485
2486 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2487 {
2488 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2489 }
2490
2491 /**
2492 * qemu_chr_info(): Character devices information
2493 *
2494 * Each device is represented by a QDict. The returned QObject is a QList
2495 * of all devices.
2496 *
2497 * The QDict contains the following:
2498 *
2499 * - "label": device's label
2500 * - "filename": device's file
2501 *
2502 * Example:
2503 *
2504 * [ { "label": "monitor", "filename", "stdio" },
2505 * { "label": "serial0", "filename": "vc" } ]
2506 */
2507 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2508 {
2509 QList *chr_list;
2510 CharDriverState *chr;
2511
2512 chr_list = qlist_new();
2513
2514 QTAILQ_FOREACH(chr, &chardevs, next) {
2515 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2516 chr->label, chr->filename);
2517 qlist_append_obj(chr_list, obj);
2518 }
2519
2520 *ret_data = QOBJECT(chr_list);
2521 }
2522
2523 CharDriverState *qemu_chr_find(const char *name)
2524 {
2525 CharDriverState *chr;
2526
2527 QTAILQ_FOREACH(chr, &chardevs, next) {
2528 if (strcmp(chr->label, name) != 0)
2529 continue;
2530 return chr;
2531 }
2532 return NULL;
2533 }
various patches