?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
tap: invoke downscript when we exit abnormally
[qemu/aliguori-queue.git] / qemu-char.c
blobc02dfae43a57bbf36e238fc9f7925054738ae064
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 IOCanReadHandler *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 IOCanReadHandler *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_exit_notifier(Notifier *notifier)
717 {
718 term_exit();
719 }
720
721 static void term_init(QemuOpts *opts)
722 {
723 struct termios tty;
724 static Notifier exit_notifier = { .notify = term_exit_notifier };
725
726 tcgetattr (0, &tty);
727 oldtty = tty;
728 old_fd0_flags = fcntl(0, F_GETFL);
729
730 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
731 |INLCR|IGNCR|ICRNL|IXON);
732 tty.c_oflag |= OPOST;
733 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
734 /* if graphical mode, we allow Ctrl-C handling */
735 if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
736 tty.c_lflag &= ~ISIG;
737 tty.c_cflag &= ~(CSIZE|PARENB);
738 tty.c_cflag |= CS8;
739 tty.c_cc[VMIN] = 1;
740 tty.c_cc[VTIME] = 0;
741
742 tcsetattr (0, TCSANOW, &tty);
743
744 if (!term_atexit_done++) {
745 exit_notifier_add(&exit_notifier);
746 }
747
748 fcntl(0, F_SETFL, O_NONBLOCK);
749 }
750
751 static void qemu_chr_close_stdio(struct CharDriverState *chr)
752 {
753 term_exit();
754 stdio_nb_clients--;
755 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
756 fd_chr_close(chr);
757 }
758
759 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
760 {
761 CharDriverState *chr;
762
763 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
764 return NULL;
765 chr = qemu_chr_open_fd(0, 1);
766 chr->chr_close = qemu_chr_close_stdio;
767 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
768 stdio_nb_clients++;
769 term_init(opts);
770
771 return chr;
772 }
773
774 #ifdef __sun__
775 /* Once Solaris has openpty(), this is going to be removed. */
776 static int openpty(int *amaster, int *aslave, char *name,
777 struct termios *termp, struct winsize *winp)
778 {
779 const char *slave;
780 int mfd = -1, sfd = -1;
781
782 *amaster = *aslave = -1;
783
784 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
785 if (mfd < 0)
786 goto err;
787
788 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
789 goto err;
790
791 if ((slave = ptsname(mfd)) == NULL)
792 goto err;
793
794 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
795 goto err;
796
797 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
798 (termp != NULL && tcgetattr(sfd, termp) < 0))
799 goto err;
800
801 if (amaster)
802 *amaster = mfd;
803 if (aslave)
804 *aslave = sfd;
805 if (winp)
806 ioctl(sfd, TIOCSWINSZ, winp);
807
808 return 0;
809
810 err:
811 if (sfd != -1)
812 close(sfd);
813 close(mfd);
814 return -1;
815 }
816
817 static void cfmakeraw (struct termios *termios_p)
818 {
819 termios_p->c_iflag &=
820 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
821 termios_p->c_oflag &= ~OPOST;
822 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
823 termios_p->c_cflag &= ~(CSIZE|PARENB);
824 termios_p->c_cflag |= CS8;
825
826 termios_p->c_cc[VMIN] = 0;
827 termios_p->c_cc[VTIME] = 0;
828 }
829 #endif
830
831 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
832 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
833 || defined(__GLIBC__)
834
835 typedef struct {
836 int fd;
837 int connected;
838 int polling;
839 int read_bytes;
840 QEMUTimer *timer;
841 } PtyCharDriver;
842
843 static void pty_chr_update_read_handler(CharDriverState *chr);
844 static void pty_chr_state(CharDriverState *chr, int connected);
845
846 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
847 {
848 PtyCharDriver *s = chr->opaque;
849
850 if (!s->connected) {
851 /* guest sends data, check for (re-)connect */
852 pty_chr_update_read_handler(chr);
853 return 0;
854 }
855 return send_all(s->fd, buf, len);
856 }
857
858 static int pty_chr_read_poll(void *opaque)
859 {
860 CharDriverState *chr = opaque;
861 PtyCharDriver *s = chr->opaque;
862
863 s->read_bytes = qemu_chr_can_read(chr);
864 return s->read_bytes;
865 }
866
867 static void pty_chr_read(void *opaque)
868 {
869 CharDriverState *chr = opaque;
870 PtyCharDriver *s = chr->opaque;
871 int size, len;
872 uint8_t buf[READ_BUF_LEN];
873
874 len = sizeof(buf);
875 if (len > s->read_bytes)
876 len = s->read_bytes;
877 if (len == 0)
878 return;
879 size = read(s->fd, buf, len);
880 if ((size == -1 && errno == EIO) ||
881 (size == 0)) {
882 pty_chr_state(chr, 0);
883 return;
884 }
885 if (size > 0) {
886 pty_chr_state(chr, 1);
887 qemu_chr_read(chr, buf, size);
888 }
889 }
890
891 static void pty_chr_update_read_handler(CharDriverState *chr)
892 {
893 PtyCharDriver *s = chr->opaque;
894
895 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
896 pty_chr_read, NULL, chr);
897 s->polling = 1;
898 /*
899 * Short timeout here: just need wait long enougth that qemu makes
900 * it through the poll loop once. When reconnected we want a
901 * short timeout so we notice it almost instantly. Otherwise
902 * read() gives us -EIO instantly, making pty_chr_state() reset the
903 * timeout to the normal (much longer) poll interval before the
904 * timer triggers.
905 */
906 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
907 }
908
909 static void pty_chr_state(CharDriverState *chr, int connected)
910 {
911 PtyCharDriver *s = chr->opaque;
912
913 if (!connected) {
914 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
915 s->connected = 0;
916 s->polling = 0;
917 /* (re-)connect poll interval for idle guests: once per second.
918 * We check more frequently in case the guests sends data to
919 * the virtual device linked to our pty. */
920 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
921 } else {
922 if (!s->connected)
923 qemu_chr_generic_open(chr);
924 s->connected = 1;
925 }
926 }
927
928 static void pty_chr_timer(void *opaque)
929 {
930 struct CharDriverState *chr = opaque;
931 PtyCharDriver *s = chr->opaque;
932
933 if (s->connected)
934 return;
935 if (s->polling) {
936 /* If we arrive here without polling being cleared due
937 * read returning -EIO, then we are (re-)connected */
938 pty_chr_state(chr, 1);
939 return;
940 }
941
942 /* Next poll ... */
943 pty_chr_update_read_handler(chr);
944 }
945
946 static void pty_chr_close(struct CharDriverState *chr)
947 {
948 PtyCharDriver *s = chr->opaque;
949
950 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
951 close(s->fd);
952 qemu_del_timer(s->timer);
953 qemu_free_timer(s->timer);
954 qemu_free(s);
955 qemu_chr_event(chr, CHR_EVENT_CLOSED);
956 }
957
958 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
959 {
960 CharDriverState *chr;
961 PtyCharDriver *s;
962 struct termios tty;
963 int slave_fd, len;
964 #if defined(__OpenBSD__) || defined(__DragonFly__)
965 char pty_name[PATH_MAX];
966 #define q_ptsname(x) pty_name
967 #else
968 char *pty_name = NULL;
969 #define q_ptsname(x) ptsname(x)
970 #endif
971
972 chr = qemu_mallocz(sizeof(CharDriverState));
973 s = qemu_mallocz(sizeof(PtyCharDriver));
974
975 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
976 return NULL;
977 }
978
979 /* Set raw attributes on the pty. */
980 tcgetattr(slave_fd, &tty);
981 cfmakeraw(&tty);
982 tcsetattr(slave_fd, TCSAFLUSH, &tty);
983 close(slave_fd);
984
985 len = strlen(q_ptsname(s->fd)) + 5;
986 chr->filename = qemu_malloc(len);
987 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
988 qemu_opt_set(opts, "path", q_ptsname(s->fd));
989 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
990
991 chr->opaque = s;
992 chr->chr_write = pty_chr_write;
993 chr->chr_update_read_handler = pty_chr_update_read_handler;
994 chr->chr_close = pty_chr_close;
995
996 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
997
998 return chr;
999 }
1000
1001 static void tty_serial_init(int fd, int speed,
1002 int parity, int data_bits, int stop_bits)
1003 {
1004 struct termios tty;
1005 speed_t spd;
1006
1007 #if 0
1008 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1009 speed, parity, data_bits, stop_bits);
1010 #endif
1011 tcgetattr (fd, &tty);
1012 oldtty = tty;
1013
1014 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1015 speed = speed * 10 / 11;
1016 do {
1017 check_speed(50);
1018 check_speed(75);
1019 check_speed(110);
1020 check_speed(134);
1021 check_speed(150);
1022 check_speed(200);
1023 check_speed(300);
1024 check_speed(600);
1025 check_speed(1200);
1026 check_speed(1800);
1027 check_speed(2400);
1028 check_speed(4800);
1029 check_speed(9600);
1030 check_speed(19200);
1031 check_speed(38400);
1032 /* Non-Posix values follow. They may be unsupported on some systems. */
1033 check_speed(57600);
1034 check_speed(115200);
1035 #ifdef B230400
1036 check_speed(230400);
1037 #endif
1038 #ifdef B460800
1039 check_speed(460800);
1040 #endif
1041 #ifdef B500000
1042 check_speed(500000);
1043 #endif
1044 #ifdef B576000
1045 check_speed(576000);
1046 #endif
1047 #ifdef B921600
1048 check_speed(921600);
1049 #endif
1050 #ifdef B1000000
1051 check_speed(1000000);
1052 #endif
1053 #ifdef B1152000
1054 check_speed(1152000);
1055 #endif
1056 #ifdef B1500000
1057 check_speed(1500000);
1058 #endif
1059 #ifdef B2000000
1060 check_speed(2000000);
1061 #endif
1062 #ifdef B2500000
1063 check_speed(2500000);
1064 #endif
1065 #ifdef B3000000
1066 check_speed(3000000);
1067 #endif
1068 #ifdef B3500000
1069 check_speed(3500000);
1070 #endif
1071 #ifdef B4000000
1072 check_speed(4000000);
1073 #endif
1074 spd = B115200;
1075 } while (0);
1076
1077 cfsetispeed(&tty, spd);
1078 cfsetospeed(&tty, spd);
1079
1080 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1081 |INLCR|IGNCR|ICRNL|IXON);
1082 tty.c_oflag |= OPOST;
1083 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1084 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1085 switch(data_bits) {
1086 default:
1087 case 8:
1088 tty.c_cflag |= CS8;
1089 break;
1090 case 7:
1091 tty.c_cflag |= CS7;
1092 break;
1093 case 6:
1094 tty.c_cflag |= CS6;
1095 break;
1096 case 5:
1097 tty.c_cflag |= CS5;
1098 break;
1099 }
1100 switch(parity) {
1101 default:
1102 case 'N':
1103 break;
1104 case 'E':
1105 tty.c_cflag |= PARENB;
1106 break;
1107 case 'O':
1108 tty.c_cflag |= PARENB | PARODD;
1109 break;
1110 }
1111 if (stop_bits == 2)
1112 tty.c_cflag |= CSTOPB;
1113
1114 tcsetattr (fd, TCSANOW, &tty);
1115 }
1116
1117 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1118 {
1119 FDCharDriver *s = chr->opaque;
1120
1121 switch(cmd) {
1122 case CHR_IOCTL_SERIAL_SET_PARAMS:
1123 {
1124 QEMUSerialSetParams *ssp = arg;
1125 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1126 ssp->data_bits, ssp->stop_bits);
1127 }
1128 break;
1129 case CHR_IOCTL_SERIAL_SET_BREAK:
1130 {
1131 int enable = *(int *)arg;
1132 if (enable)
1133 tcsendbreak(s->fd_in, 1);
1134 }
1135 break;
1136 case CHR_IOCTL_SERIAL_GET_TIOCM:
1137 {
1138 int sarg = 0;
1139 int *targ = (int *)arg;
1140 ioctl(s->fd_in, TIOCMGET, &sarg);
1141 *targ = 0;
1142 if (sarg & TIOCM_CTS)
1143 *targ |= CHR_TIOCM_CTS;
1144 if (sarg & TIOCM_CAR)
1145 *targ |= CHR_TIOCM_CAR;
1146 if (sarg & TIOCM_DSR)
1147 *targ |= CHR_TIOCM_DSR;
1148 if (sarg & TIOCM_RI)
1149 *targ |= CHR_TIOCM_RI;
1150 if (sarg & TIOCM_DTR)
1151 *targ |= CHR_TIOCM_DTR;
1152 if (sarg & TIOCM_RTS)
1153 *targ |= CHR_TIOCM_RTS;
1154 }
1155 break;
1156 case CHR_IOCTL_SERIAL_SET_TIOCM:
1157 {
1158 int sarg = *(int *)arg;
1159 int targ = 0;
1160 ioctl(s->fd_in, TIOCMGET, &targ);
1161 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1162 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1163 if (sarg & CHR_TIOCM_CTS)
1164 targ |= TIOCM_CTS;
1165 if (sarg & CHR_TIOCM_CAR)
1166 targ |= TIOCM_CAR;
1167 if (sarg & CHR_TIOCM_DSR)
1168 targ |= TIOCM_DSR;
1169 if (sarg & CHR_TIOCM_RI)
1170 targ |= TIOCM_RI;
1171 if (sarg & CHR_TIOCM_DTR)
1172 targ |= TIOCM_DTR;
1173 if (sarg & CHR_TIOCM_RTS)
1174 targ |= TIOCM_RTS;
1175 ioctl(s->fd_in, TIOCMSET, &targ);
1176 }
1177 break;
1178 default:
1179 return -ENOTSUP;
1180 }
1181 return 0;
1182 }
1183
1184 static void tty_exit(void)
1185 {
1186 tcsetattr(0, TCSANOW, &oldtty);
1187 }
1188
1189 static void qemu_chr_close_tty(CharDriverState *chr)
1190 {
1191 FDCharDriver *s = chr->opaque;
1192 int fd = -1;
1193
1194 if (s) {
1195 fd = s->fd_in;
1196 }
1197
1198 fd_chr_close(chr);
1199
1200 if (fd >= 0) {
1201 close(fd);
1202 }
1203 }
1204
1205 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1206 {
1207 const char *filename = qemu_opt_get(opts, "path");
1208 CharDriverState *chr;
1209 int fd;
1210
1211 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1212 if (fd < 0) {
1213 return NULL;
1214 }
1215 tty_serial_init(fd, 115200, 'N', 8, 1);
1216 chr = qemu_chr_open_fd(fd, fd);
1217 if (!chr) {
1218 close(fd);
1219 return NULL;
1220 }
1221 chr->chr_ioctl = tty_serial_ioctl;
1222 chr->chr_close = qemu_chr_close_tty;
1223 if (!term_atexit_done++)
1224 atexit(tty_exit);
1225 return chr;
1226 }
1227 #else /* ! __linux__ && ! __sun__ */
1228 static CharDriverState *qemu_chr_open_pty(void)
1229 {
1230 return NULL;
1231 }
1232 #endif /* __linux__ || __sun__ */
1233
1234 #if defined(__linux__)
1235 typedef struct {
1236 int fd;
1237 int mode;
1238 } ParallelCharDriver;
1239
1240 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1241 {
1242 if (s->mode != mode) {
1243 int m = mode;
1244 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1245 return 0;
1246 s->mode = mode;
1247 }
1248 return 1;
1249 }
1250
1251 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1252 {
1253 ParallelCharDriver *drv = chr->opaque;
1254 int fd = drv->fd;
1255 uint8_t b;
1256
1257 switch(cmd) {
1258 case CHR_IOCTL_PP_READ_DATA:
1259 if (ioctl(fd, PPRDATA, &b) < 0)
1260 return -ENOTSUP;
1261 *(uint8_t *)arg = b;
1262 break;
1263 case CHR_IOCTL_PP_WRITE_DATA:
1264 b = *(uint8_t *)arg;
1265 if (ioctl(fd, PPWDATA, &b) < 0)
1266 return -ENOTSUP;
1267 break;
1268 case CHR_IOCTL_PP_READ_CONTROL:
1269 if (ioctl(fd, PPRCONTROL, &b) < 0)
1270 return -ENOTSUP;
1271 /* Linux gives only the lowest bits, and no way to know data
1272 direction! For better compatibility set the fixed upper
1273 bits. */
1274 *(uint8_t *)arg = b | 0xc0;
1275 break;
1276 case CHR_IOCTL_PP_WRITE_CONTROL:
1277 b = *(uint8_t *)arg;
1278 if (ioctl(fd, PPWCONTROL, &b) < 0)
1279 return -ENOTSUP;
1280 break;
1281 case CHR_IOCTL_PP_READ_STATUS:
1282 if (ioctl(fd, PPRSTATUS, &b) < 0)
1283 return -ENOTSUP;
1284 *(uint8_t *)arg = b;
1285 break;
1286 case CHR_IOCTL_PP_DATA_DIR:
1287 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1288 return -ENOTSUP;
1289 break;
1290 case CHR_IOCTL_PP_EPP_READ_ADDR:
1291 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1292 struct ParallelIOArg *parg = arg;
1293 int n = read(fd, parg->buffer, parg->count);
1294 if (n != parg->count) {
1295 return -EIO;
1296 }
1297 }
1298 break;
1299 case CHR_IOCTL_PP_EPP_READ:
1300 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1301 struct ParallelIOArg *parg = arg;
1302 int n = read(fd, parg->buffer, parg->count);
1303 if (n != parg->count) {
1304 return -EIO;
1305 }
1306 }
1307 break;
1308 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1309 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1310 struct ParallelIOArg *parg = arg;
1311 int n = write(fd, parg->buffer, parg->count);
1312 if (n != parg->count) {
1313 return -EIO;
1314 }
1315 }
1316 break;
1317 case CHR_IOCTL_PP_EPP_WRITE:
1318 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1319 struct ParallelIOArg *parg = arg;
1320 int n = write(fd, parg->buffer, parg->count);
1321 if (n != parg->count) {
1322 return -EIO;
1323 }
1324 }
1325 break;
1326 default:
1327 return -ENOTSUP;
1328 }
1329 return 0;
1330 }
1331
1332 static void pp_close(CharDriverState *chr)
1333 {
1334 ParallelCharDriver *drv = chr->opaque;
1335 int fd = drv->fd;
1336
1337 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1338 ioctl(fd, PPRELEASE);
1339 close(fd);
1340 qemu_free(drv);
1341 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1342 }
1343
1344 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1345 {
1346 const char *filename = qemu_opt_get(opts, "path");
1347 CharDriverState *chr;
1348 ParallelCharDriver *drv;
1349 int fd;
1350
1351 TFR(fd = open(filename, O_RDWR));
1352 if (fd < 0)
1353 return NULL;
1354
1355 if (ioctl(fd, PPCLAIM) < 0) {
1356 close(fd);
1357 return NULL;
1358 }
1359
1360 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1361 drv->fd = fd;
1362 drv->mode = IEEE1284_MODE_COMPAT;
1363
1364 chr = qemu_mallocz(sizeof(CharDriverState));
1365 chr->chr_write = null_chr_write;
1366 chr->chr_ioctl = pp_ioctl;
1367 chr->chr_close = pp_close;
1368 chr->opaque = drv;
1369
1370 qemu_chr_generic_open(chr);
1371
1372 return chr;
1373 }
1374 #endif /* __linux__ */
1375
1376 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1377 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1378 {
1379 int fd = (int)chr->opaque;
1380 uint8_t b;
1381
1382 switch(cmd) {
1383 case CHR_IOCTL_PP_READ_DATA:
1384 if (ioctl(fd, PPIGDATA, &b) < 0)
1385 return -ENOTSUP;
1386 *(uint8_t *)arg = b;
1387 break;
1388 case CHR_IOCTL_PP_WRITE_DATA:
1389 b = *(uint8_t *)arg;
1390 if (ioctl(fd, PPISDATA, &b) < 0)
1391 return -ENOTSUP;
1392 break;
1393 case CHR_IOCTL_PP_READ_CONTROL:
1394 if (ioctl(fd, PPIGCTRL, &b) < 0)
1395 return -ENOTSUP;
1396 *(uint8_t *)arg = b;
1397 break;
1398 case CHR_IOCTL_PP_WRITE_CONTROL:
1399 b = *(uint8_t *)arg;
1400 if (ioctl(fd, PPISCTRL, &b) < 0)
1401 return -ENOTSUP;
1402 break;
1403 case CHR_IOCTL_PP_READ_STATUS:
1404 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1405 return -ENOTSUP;
1406 *(uint8_t *)arg = b;
1407 break;
1408 default:
1409 return -ENOTSUP;
1410 }
1411 return 0;
1412 }
1413
1414 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1415 {
1416 const char *filename = qemu_opt_get(opts, "path");
1417 CharDriverState *chr;
1418 int fd;
1419
1420 fd = open(filename, O_RDWR);
1421 if (fd < 0)
1422 return NULL;
1423
1424 chr = qemu_mallocz(sizeof(CharDriverState));
1425 chr->opaque = (void *)fd;
1426 chr->chr_write = null_chr_write;
1427 chr->chr_ioctl = pp_ioctl;
1428 return chr;
1429 }
1430 #endif
1431
1432 #else /* _WIN32 */
1433
1434 typedef struct {
1435 int max_size;
1436 HANDLE hcom, hrecv, hsend;
1437 OVERLAPPED orecv, osend;
1438 BOOL fpipe;
1439 DWORD len;
1440 } WinCharState;
1441
1442 #define NSENDBUF 2048
1443 #define NRECVBUF 2048
1444 #define MAXCONNECT 1
1445 #define NTIMEOUT 5000
1446
1447 static int win_chr_poll(void *opaque);
1448 static int win_chr_pipe_poll(void *opaque);
1449
1450 static void win_chr_close(CharDriverState *chr)
1451 {
1452 WinCharState *s = chr->opaque;
1453
1454 if (s->hsend) {
1455 CloseHandle(s->hsend);
1456 s->hsend = NULL;
1457 }
1458 if (s->hrecv) {
1459 CloseHandle(s->hrecv);
1460 s->hrecv = NULL;
1461 }
1462 if (s->hcom) {
1463 CloseHandle(s->hcom);
1464 s->hcom = NULL;
1465 }
1466 if (s->fpipe)
1467 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1468 else
1469 qemu_del_polling_cb(win_chr_poll, chr);
1470
1471 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1472 }
1473
1474 static int win_chr_init(CharDriverState *chr, const char *filename)
1475 {
1476 WinCharState *s = chr->opaque;
1477 COMMCONFIG comcfg;
1478 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1479 COMSTAT comstat;
1480 DWORD size;
1481 DWORD err;
1482
1483 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1484 if (!s->hsend) {
1485 fprintf(stderr, "Failed CreateEvent\n");
1486 goto fail;
1487 }
1488 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1489 if (!s->hrecv) {
1490 fprintf(stderr, "Failed CreateEvent\n");
1491 goto fail;
1492 }
1493
1494 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1495 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1496 if (s->hcom == INVALID_HANDLE_VALUE) {
1497 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1498 s->hcom = NULL;
1499 goto fail;
1500 }
1501
1502 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1503 fprintf(stderr, "Failed SetupComm\n");
1504 goto fail;
1505 }
1506
1507 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1508 size = sizeof(COMMCONFIG);
1509 GetDefaultCommConfig(filename, &comcfg, &size);
1510 comcfg.dcb.DCBlength = sizeof(DCB);
1511 CommConfigDialog(filename, NULL, &comcfg);
1512
1513 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1514 fprintf(stderr, "Failed SetCommState\n");
1515 goto fail;
1516 }
1517
1518 if (!SetCommMask(s->hcom, EV_ERR)) {
1519 fprintf(stderr, "Failed SetCommMask\n");
1520 goto fail;
1521 }
1522
1523 cto.ReadIntervalTimeout = MAXDWORD;
1524 if (!SetCommTimeouts(s->hcom, &cto)) {
1525 fprintf(stderr, "Failed SetCommTimeouts\n");
1526 goto fail;
1527 }
1528
1529 if (!ClearCommError(s->hcom, &err, &comstat)) {
1530 fprintf(stderr, "Failed ClearCommError\n");
1531 goto fail;
1532 }
1533 qemu_add_polling_cb(win_chr_poll, chr);
1534 return 0;
1535
1536 fail:
1537 win_chr_close(chr);
1538 return -1;
1539 }
1540
1541 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1542 {
1543 WinCharState *s = chr->opaque;
1544 DWORD len, ret, size, err;
1545
1546 len = len1;
1547 ZeroMemory(&s->osend, sizeof(s->osend));
1548 s->osend.hEvent = s->hsend;
1549 while (len > 0) {
1550 if (s->hsend)
1551 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1552 else
1553 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1554 if (!ret) {
1555 err = GetLastError();
1556 if (err == ERROR_IO_PENDING) {
1557 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1558 if (ret) {
1559 buf += size;
1560 len -= size;
1561 } else {
1562 break;
1563 }
1564 } else {
1565 break;
1566 }
1567 } else {
1568 buf += size;
1569 len -= size;
1570 }
1571 }
1572 return len1 - len;
1573 }
1574
1575 static int win_chr_read_poll(CharDriverState *chr)
1576 {
1577 WinCharState *s = chr->opaque;
1578
1579 s->max_size = qemu_chr_can_read(chr);
1580 return s->max_size;
1581 }
1582
1583 static void win_chr_readfile(CharDriverState *chr)
1584 {
1585 WinCharState *s = chr->opaque;
1586 int ret, err;
1587 uint8_t buf[READ_BUF_LEN];
1588 DWORD size;
1589
1590 ZeroMemory(&s->orecv, sizeof(s->orecv));
1591 s->orecv.hEvent = s->hrecv;
1592 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1593 if (!ret) {
1594 err = GetLastError();
1595 if (err == ERROR_IO_PENDING) {
1596 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1597 }
1598 }
1599
1600 if (size > 0) {
1601 qemu_chr_read(chr, buf, size);
1602 }
1603 }
1604
1605 static void win_chr_read(CharDriverState *chr)
1606 {
1607 WinCharState *s = chr->opaque;
1608
1609 if (s->len > s->max_size)
1610 s->len = s->max_size;
1611 if (s->len == 0)
1612 return;
1613
1614 win_chr_readfile(chr);
1615 }
1616
1617 static int win_chr_poll(void *opaque)
1618 {
1619 CharDriverState *chr = opaque;
1620 WinCharState *s = chr->opaque;
1621 COMSTAT status;
1622 DWORD comerr;
1623
1624 ClearCommError(s->hcom, &comerr, &status);
1625 if (status.cbInQue > 0) {
1626 s->len = status.cbInQue;
1627 win_chr_read_poll(chr);
1628 win_chr_read(chr);
1629 return 1;
1630 }
1631 return 0;
1632 }
1633
1634 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1635 {
1636 const char *filename = qemu_opt_get(opts, "path");
1637 CharDriverState *chr;
1638 WinCharState *s;
1639
1640 chr = qemu_mallocz(sizeof(CharDriverState));
1641 s = qemu_mallocz(sizeof(WinCharState));
1642 chr->opaque = s;
1643 chr->chr_write = win_chr_write;
1644 chr->chr_close = win_chr_close;
1645
1646 if (win_chr_init(chr, filename) < 0) {
1647 free(s);
1648 free(chr);
1649 return NULL;
1650 }
1651 qemu_chr_generic_open(chr);
1652 return chr;
1653 }
1654
1655 static int win_chr_pipe_poll(void *opaque)
1656 {
1657 CharDriverState *chr = opaque;
1658 WinCharState *s = chr->opaque;
1659 DWORD size;
1660
1661 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1662 if (size > 0) {
1663 s->len = size;
1664 win_chr_read_poll(chr);
1665 win_chr_read(chr);
1666 return 1;
1667 }
1668 return 0;
1669 }
1670
1671 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1672 {
1673 WinCharState *s = chr->opaque;
1674 OVERLAPPED ov;
1675 int ret;
1676 DWORD size;
1677 char openname[256];
1678
1679 s->fpipe = TRUE;
1680
1681 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1682 if (!s->hsend) {
1683 fprintf(stderr, "Failed CreateEvent\n");
1684 goto fail;
1685 }
1686 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1687 if (!s->hrecv) {
1688 fprintf(stderr, "Failed CreateEvent\n");
1689 goto fail;
1690 }
1691
1692 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1693 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1694 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1695 PIPE_WAIT,
1696 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1697 if (s->hcom == INVALID_HANDLE_VALUE) {
1698 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1699 s->hcom = NULL;
1700 goto fail;
1701 }
1702
1703 ZeroMemory(&ov, sizeof(ov));
1704 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1705 ret = ConnectNamedPipe(s->hcom, &ov);
1706 if (ret) {
1707 fprintf(stderr, "Failed ConnectNamedPipe\n");
1708 goto fail;
1709 }
1710
1711 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1712 if (!ret) {
1713 fprintf(stderr, "Failed GetOverlappedResult\n");
1714 if (ov.hEvent) {
1715 CloseHandle(ov.hEvent);
1716 ov.hEvent = NULL;
1717 }
1718 goto fail;
1719 }
1720
1721 if (ov.hEvent) {
1722 CloseHandle(ov.hEvent);
1723 ov.hEvent = NULL;
1724 }
1725 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1726 return 0;
1727
1728 fail:
1729 win_chr_close(chr);
1730 return -1;
1731 }
1732
1733
1734 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1735 {
1736 const char *filename = qemu_opt_get(opts, "path");
1737 CharDriverState *chr;
1738 WinCharState *s;
1739
1740 chr = qemu_mallocz(sizeof(CharDriverState));
1741 s = qemu_mallocz(sizeof(WinCharState));
1742 chr->opaque = s;
1743 chr->chr_write = win_chr_write;
1744 chr->chr_close = win_chr_close;
1745
1746 if (win_chr_pipe_init(chr, filename) < 0) {
1747 free(s);
1748 free(chr);
1749 return NULL;
1750 }
1751 qemu_chr_generic_open(chr);
1752 return chr;
1753 }
1754
1755 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1756 {
1757 CharDriverState *chr;
1758 WinCharState *s;
1759
1760 chr = qemu_mallocz(sizeof(CharDriverState));
1761 s = qemu_mallocz(sizeof(WinCharState));
1762 s->hcom = fd_out;
1763 chr->opaque = s;
1764 chr->chr_write = win_chr_write;
1765 qemu_chr_generic_open(chr);
1766 return chr;
1767 }
1768
1769 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1770 {
1771 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1772 }
1773
1774 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1775 {
1776 const char *file_out = qemu_opt_get(opts, "path");
1777 HANDLE fd_out;
1778
1779 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1780 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1781 if (fd_out == INVALID_HANDLE_VALUE)
1782 return NULL;
1783
1784 return qemu_chr_open_win_file(fd_out);
1785 }
1786 #endif /* !_WIN32 */
1787
1788 /***********************************************************/
1789 /* UDP Net console */
1790
1791 typedef struct {
1792 int fd;
1793 uint8_t buf[READ_BUF_LEN];
1794 int bufcnt;
1795 int bufptr;
1796 int max_size;
1797 } NetCharDriver;
1798
1799 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1800 {
1801 NetCharDriver *s = chr->opaque;
1802
1803 return send(s->fd, (const void *)buf, len, 0);
1804 }
1805
1806 static int udp_chr_read_poll(void *opaque)
1807 {
1808 CharDriverState *chr = opaque;
1809 NetCharDriver *s = chr->opaque;
1810
1811 s->max_size = qemu_chr_can_read(chr);
1812
1813 /* If there were any stray characters in the queue process them
1814 * first
1815 */
1816 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1817 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1818 s->bufptr++;
1819 s->max_size = qemu_chr_can_read(chr);
1820 }
1821 return s->max_size;
1822 }
1823
1824 static void udp_chr_read(void *opaque)
1825 {
1826 CharDriverState *chr = opaque;
1827 NetCharDriver *s = chr->opaque;
1828
1829 if (s->max_size == 0)
1830 return;
1831 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1832 s->bufptr = s->bufcnt;
1833 if (s->bufcnt <= 0)
1834 return;
1835
1836 s->bufptr = 0;
1837 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1838 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1839 s->bufptr++;
1840 s->max_size = qemu_chr_can_read(chr);
1841 }
1842 }
1843
1844 static void udp_chr_update_read_handler(CharDriverState *chr)
1845 {
1846 NetCharDriver *s = chr->opaque;
1847
1848 if (s->fd >= 0) {
1849 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1850 udp_chr_read, NULL, chr);
1851 }
1852 }
1853
1854 static void udp_chr_close(CharDriverState *chr)
1855 {
1856 NetCharDriver *s = chr->opaque;
1857 if (s->fd >= 0) {
1858 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1859 closesocket(s->fd);
1860 }
1861 qemu_free(s);
1862 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1863 }
1864
1865 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1866 {
1867 CharDriverState *chr = NULL;
1868 NetCharDriver *s = NULL;
1869 int fd = -1;
1870
1871 chr = qemu_mallocz(sizeof(CharDriverState));
1872 s = qemu_mallocz(sizeof(NetCharDriver));
1873
1874 fd = inet_dgram_opts(opts);
1875 if (fd < 0) {
1876 fprintf(stderr, "inet_dgram_opts failed\n");
1877 goto return_err;
1878 }
1879
1880 s->fd = fd;
1881 s->bufcnt = 0;
1882 s->bufptr = 0;
1883 chr->opaque = s;
1884 chr->chr_write = udp_chr_write;
1885 chr->chr_update_read_handler = udp_chr_update_read_handler;
1886 chr->chr_close = udp_chr_close;
1887 return chr;
1888
1889 return_err:
1890 if (chr)
1891 free(chr);
1892 if (s)
1893 free(s);
1894 if (fd >= 0)
1895 closesocket(fd);
1896 return NULL;
1897 }
1898
1899 /***********************************************************/
1900 /* TCP Net console */
1901
1902 typedef struct {
1903 int fd, listen_fd;
1904 int connected;
1905 int max_size;
1906 int do_telnetopt;
1907 int do_nodelay;
1908 int is_unix;
1909 int msgfd;
1910 } TCPCharDriver;
1911
1912 static void tcp_chr_accept(void *opaque);
1913
1914 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1915 {
1916 TCPCharDriver *s = chr->opaque;
1917 if (s->connected) {
1918 return send_all(s->fd, buf, len);
1919 } else {
1920 /* XXX: indicate an error ? */
1921 return len;
1922 }
1923 }
1924
1925 static int tcp_chr_read_poll(void *opaque)
1926 {
1927 CharDriverState *chr = opaque;
1928 TCPCharDriver *s = chr->opaque;
1929 if (!s->connected)
1930 return 0;
1931 s->max_size = qemu_chr_can_read(chr);
1932 return s->max_size;
1933 }
1934
1935 #define IAC 255
1936 #define IAC_BREAK 243
1937 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1938 TCPCharDriver *s,
1939 uint8_t *buf, int *size)
1940 {
1941 /* Handle any telnet client's basic IAC options to satisfy char by
1942 * char mode with no echo. All IAC options will be removed from
1943 * the buf and the do_telnetopt variable will be used to track the
1944 * state of the width of the IAC information.
1945 *
1946 * IAC commands come in sets of 3 bytes with the exception of the
1947 * "IAC BREAK" command and the double IAC.
1948 */
1949
1950 int i;
1951 int j = 0;
1952
1953 for (i = 0; i < *size; i++) {
1954 if (s->do_telnetopt > 1) {
1955 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1956 /* Double IAC means send an IAC */
1957 if (j != i)
1958 buf[j] = buf[i];
1959 j++;
1960 s->do_telnetopt = 1;
1961 } else {
1962 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1963 /* Handle IAC break commands by sending a serial break */
1964 qemu_chr_event(chr, CHR_EVENT_BREAK);
1965 s->do_telnetopt++;
1966 }
1967 s->do_telnetopt++;
1968 }
1969 if (s->do_telnetopt >= 4) {
1970 s->do_telnetopt = 1;
1971 }
1972 } else {
1973 if ((unsigned char)buf[i] == IAC) {
1974 s->do_telnetopt = 2;
1975 } else {
1976 if (j != i)
1977 buf[j] = buf[i];
1978 j++;
1979 }
1980 }
1981 }
1982 *size = j;
1983 }
1984
1985 static int tcp_get_msgfd(CharDriverState *chr)
1986 {
1987 TCPCharDriver *s = chr->opaque;
1988
1989 return s->msgfd;
1990 }
1991
1992 #ifndef _WIN32
1993 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1994 {
1995 TCPCharDriver *s = chr->opaque;
1996 struct cmsghdr *cmsg;
1997
1998 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1999 int fd;
2000
2001 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2002 cmsg->cmsg_level != SOL_SOCKET ||
2003 cmsg->cmsg_type != SCM_RIGHTS)
2004 continue;
2005
2006 fd = *((int *)CMSG_DATA(cmsg));
2007 if (fd < 0)
2008 continue;
2009
2010 if (s->msgfd != -1)
2011 close(s->msgfd);
2012 s->msgfd = fd;
2013 }
2014 }
2015
2016 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2017 {
2018 TCPCharDriver *s = chr->opaque;
2019 struct msghdr msg = { NULL, };
2020 struct iovec iov[1];
2021 union {
2022 struct cmsghdr cmsg;
2023 char control[CMSG_SPACE(sizeof(int))];
2024 } msg_control;
2025 ssize_t ret;
2026
2027 iov[0].iov_base = buf;
2028 iov[0].iov_len = len;
2029
2030 msg.msg_iov = iov;
2031 msg.msg_iovlen = 1;
2032 msg.msg_control = &msg_control;
2033 msg.msg_controllen = sizeof(msg_control);
2034
2035 ret = recvmsg(s->fd, &msg, 0);
2036 if (ret > 0 && s->is_unix)
2037 unix_process_msgfd(chr, &msg);
2038
2039 return ret;
2040 }
2041 #else
2042 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2043 {
2044 TCPCharDriver *s = chr->opaque;
2045 return recv(s->fd, buf, len, 0);
2046 }
2047 #endif
2048
2049 static void tcp_chr_read(void *opaque)
2050 {
2051 CharDriverState *chr = opaque;
2052 TCPCharDriver *s = chr->opaque;
2053 uint8_t buf[READ_BUF_LEN];
2054 int len, size;
2055
2056 if (!s->connected || s->max_size <= 0)
2057 return;
2058 len = sizeof(buf);
2059 if (len > s->max_size)
2060 len = s->max_size;
2061 size = tcp_chr_recv(chr, (void *)buf, len);
2062 if (size == 0) {
2063 /* connection closed */
2064 s->connected = 0;
2065 if (s->listen_fd >= 0) {
2066 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2067 }
2068 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2069 closesocket(s->fd);
2070 s->fd = -1;
2071 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2072 } else if (size > 0) {
2073 if (s->do_telnetopt)
2074 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2075 if (size > 0)
2076 qemu_chr_read(chr, buf, size);
2077 if (s->msgfd != -1) {
2078 close(s->msgfd);
2079 s->msgfd = -1;
2080 }
2081 }
2082 }
2083
2084 static void tcp_chr_connect(void *opaque)
2085 {
2086 CharDriverState *chr = opaque;
2087 TCPCharDriver *s = chr->opaque;
2088
2089 s->connected = 1;
2090 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2091 tcp_chr_read, NULL, chr);
2092 qemu_chr_generic_open(chr);
2093 }
2094
2095 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2096 static void tcp_chr_telnet_init(int fd)
2097 {
2098 char buf[3];
2099 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2100 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2101 send(fd, (char *)buf, 3, 0);
2102 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2103 send(fd, (char *)buf, 3, 0);
2104 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2105 send(fd, (char *)buf, 3, 0);
2106 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2107 send(fd, (char *)buf, 3, 0);
2108 }
2109
2110 static void socket_set_nodelay(int fd)
2111 {
2112 int val = 1;
2113 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2114 }
2115
2116 static void tcp_chr_accept(void *opaque)
2117 {
2118 CharDriverState *chr = opaque;
2119 TCPCharDriver *s = chr->opaque;
2120 struct sockaddr_in saddr;
2121 #ifndef _WIN32
2122 struct sockaddr_un uaddr;
2123 #endif
2124 struct sockaddr *addr;
2125 socklen_t len;
2126 int fd;
2127
2128 for(;;) {
2129 #ifndef _WIN32
2130 if (s->is_unix) {
2131 len = sizeof(uaddr);
2132 addr = (struct sockaddr *)&uaddr;
2133 } else
2134 #endif
2135 {
2136 len = sizeof(saddr);
2137 addr = (struct sockaddr *)&saddr;
2138 }
2139 fd = qemu_accept(s->listen_fd, addr, &len);
2140 if (fd < 0 && errno != EINTR) {
2141 return;
2142 } else if (fd >= 0) {
2143 if (s->do_telnetopt)
2144 tcp_chr_telnet_init(fd);
2145 break;
2146 }
2147 }
2148 socket_set_nonblock(fd);
2149 if (s->do_nodelay)
2150 socket_set_nodelay(fd);
2151 s->fd = fd;
2152 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2153 tcp_chr_connect(chr);
2154 }
2155
2156 static void tcp_chr_close(CharDriverState *chr)
2157 {
2158 TCPCharDriver *s = chr->opaque;
2159 if (s->fd >= 0) {
2160 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2161 closesocket(s->fd);
2162 }
2163 if (s->listen_fd >= 0) {
2164 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2165 closesocket(s->listen_fd);
2166 }
2167 qemu_free(s);
2168 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2169 }
2170
2171 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2172 {
2173 CharDriverState *chr = NULL;
2174 TCPCharDriver *s = NULL;
2175 int fd = -1;
2176 int is_listen;
2177 int is_waitconnect;
2178 int do_nodelay;
2179 int is_unix;
2180 int is_telnet;
2181
2182 is_listen = qemu_opt_get_bool(opts, "server", 0);
2183 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2184 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2185 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2186 is_unix = qemu_opt_get(opts, "path") != NULL;
2187 if (!is_listen)
2188 is_waitconnect = 0;
2189
2190 chr = qemu_mallocz(sizeof(CharDriverState));
2191 s = qemu_mallocz(sizeof(TCPCharDriver));
2192
2193 if (is_unix) {
2194 if (is_listen) {
2195 fd = unix_listen_opts(opts);
2196 } else {
2197 fd = unix_connect_opts(opts);
2198 }
2199 } else {
2200 if (is_listen) {
2201 fd = inet_listen_opts(opts, 0);
2202 } else {
2203 fd = inet_connect_opts(opts);
2204 }
2205 }
2206 if (fd < 0)
2207 goto fail;
2208
2209 if (!is_waitconnect)
2210 socket_set_nonblock(fd);
2211
2212 s->connected = 0;
2213 s->fd = -1;
2214 s->listen_fd = -1;
2215 s->msgfd = -1;
2216 s->is_unix = is_unix;
2217 s->do_nodelay = do_nodelay && !is_unix;
2218
2219 chr->opaque = s;
2220 chr->chr_write = tcp_chr_write;
2221 chr->chr_close = tcp_chr_close;
2222 chr->get_msgfd = tcp_get_msgfd;
2223
2224 if (is_listen) {
2225 s->listen_fd = fd;
2226 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2227 if (is_telnet)
2228 s->do_telnetopt = 1;
2229
2230 } else {
2231 s->connected = 1;
2232 s->fd = fd;
2233 socket_set_nodelay(fd);
2234 tcp_chr_connect(chr);
2235 }
2236
2237 /* for "info chardev" monitor command */
2238 chr->filename = qemu_malloc(256);
2239 if (is_unix) {
2240 snprintf(chr->filename, 256, "unix:%s%s",
2241 qemu_opt_get(opts, "path"),
2242 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2243 } else if (is_telnet) {
2244 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2245 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2246 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2247 } else {
2248 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2249 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2250 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2251 }
2252
2253 if (is_listen && is_waitconnect) {
2254 printf("QEMU waiting for connection on: %s\n",
2255 chr->filename);
2256 tcp_chr_accept(chr);
2257 socket_set_nonblock(s->listen_fd);
2258 }
2259 return chr;
2260
2261 fail:
2262 if (fd >= 0)
2263 closesocket(fd);
2264 qemu_free(s);
2265 qemu_free(chr);
2266 return NULL;
2267 }
2268
2269 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2270 {
2271 char host[65], port[33], width[8], height[8];
2272 int pos;
2273 const char *p;
2274 QemuOpts *opts;
2275
2276 opts = qemu_opts_create(&qemu_chardev_opts, label, 1);
2277 if (NULL == opts)
2278 return NULL;
2279
2280 if (strstart(filename, "mon:", &p)) {
2281 filename = p;
2282 qemu_opt_set(opts, "mux", "on");
2283 }
2284
2285 if (strcmp(filename, "null") == 0 ||
2286 strcmp(filename, "pty") == 0 ||
2287 strcmp(filename, "msmouse") == 0 ||
2288 strcmp(filename, "braille") == 0 ||
2289 strcmp(filename, "stdio") == 0) {
2290 qemu_opt_set(opts, "backend", filename);
2291 return opts;
2292 }
2293 if (strstart(filename, "vc", &p)) {
2294 qemu_opt_set(opts, "backend", "vc");
2295 if (*p == ':') {
2296 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2297 /* pixels */
2298 qemu_opt_set(opts, "width", width);
2299 qemu_opt_set(opts, "height", height);
2300 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2301 /* chars */
2302 qemu_opt_set(opts, "cols", width);
2303 qemu_opt_set(opts, "rows", height);
2304 } else {
2305 goto fail;
2306 }
2307 }
2308 return opts;
2309 }
2310 if (strcmp(filename, "con:") == 0) {
2311 qemu_opt_set(opts, "backend", "console");
2312 return opts;
2313 }
2314 if (strstart(filename, "COM", NULL)) {
2315 qemu_opt_set(opts, "backend", "serial");
2316 qemu_opt_set(opts, "path", filename);
2317 return opts;
2318 }
2319 if (strstart(filename, "file:", &p)) {
2320 qemu_opt_set(opts, "backend", "file");
2321 qemu_opt_set(opts, "path", p);
2322 return opts;
2323 }
2324 if (strstart(filename, "pipe:", &p)) {
2325 qemu_opt_set(opts, "backend", "pipe");
2326 qemu_opt_set(opts, "path", p);
2327 return opts;
2328 }
2329 if (strstart(filename, "tcp:", &p) ||
2330 strstart(filename, "telnet:", &p)) {
2331 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2332 host[0] = 0;
2333 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2334 goto fail;
2335 }
2336 qemu_opt_set(opts, "backend", "socket");
2337 qemu_opt_set(opts, "host", host);
2338 qemu_opt_set(opts, "port", port);
2339 if (p[pos] == ',') {
2340 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2341 goto fail;
2342 }
2343 if (strstart(filename, "telnet:", &p))
2344 qemu_opt_set(opts, "telnet", "on");
2345 return opts;
2346 }
2347 if (strstart(filename, "udp:", &p)) {
2348 qemu_opt_set(opts, "backend", "udp");
2349 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2350 host[0] = 0;
2351 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2352 goto fail;
2353 }
2354 }
2355 qemu_opt_set(opts, "host", host);
2356 qemu_opt_set(opts, "port", port);
2357 if (p[pos] == '@') {
2358 p += pos + 1;
2359 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2360 host[0] = 0;
2361 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2362 goto fail;
2363 }
2364 }
2365 qemu_opt_set(opts, "localaddr", host);
2366 qemu_opt_set(opts, "localport", port);
2367 }
2368 return opts;
2369 }
2370 if (strstart(filename, "unix:", &p)) {
2371 qemu_opt_set(opts, "backend", "socket");
2372 if (qemu_opts_do_parse(opts, p, "path") != 0)
2373 goto fail;
2374 return opts;
2375 }
2376 if (strstart(filename, "/dev/parport", NULL) ||
2377 strstart(filename, "/dev/ppi", NULL)) {
2378 qemu_opt_set(opts, "backend", "parport");
2379 qemu_opt_set(opts, "path", filename);
2380 return opts;
2381 }
2382 if (strstart(filename, "/dev/", NULL)) {
2383 qemu_opt_set(opts, "backend", "tty");
2384 qemu_opt_set(opts, "path", filename);
2385 return opts;
2386 }
2387
2388 fail:
2389 qemu_opts_del(opts);
2390 return NULL;
2391 }
2392
2393 static const struct {
2394 const char *name;
2395 CharDriverState *(*open)(QemuOpts *opts);
2396 } backend_table[] = {
2397 { .name = "null", .open = qemu_chr_open_null },
2398 { .name = "socket", .open = qemu_chr_open_socket },
2399 { .name = "udp", .open = qemu_chr_open_udp },
2400 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2401 { .name = "vc", .open = text_console_init },
2402 #ifdef _WIN32
2403 { .name = "file", .open = qemu_chr_open_win_file_out },
2404 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2405 { .name = "console", .open = qemu_chr_open_win_con },
2406 { .name = "serial", .open = qemu_chr_open_win },
2407 #else
2408 { .name = "file", .open = qemu_chr_open_file_out },
2409 { .name = "pipe", .open = qemu_chr_open_pipe },
2410 { .name = "pty", .open = qemu_chr_open_pty },
2411 { .name = "stdio", .open = qemu_chr_open_stdio },
2412 #endif
2413 #ifdef CONFIG_BRLAPI
2414 { .name = "braille", .open = chr_baum_init },
2415 #endif
2416 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2417 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2418 || defined(__FreeBSD_kernel__)
2419 { .name = "tty", .open = qemu_chr_open_tty },
2420 #endif
2421 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2422 || defined(__FreeBSD_kernel__)
2423 { .name = "parport", .open = qemu_chr_open_pp },
2424 #endif
2425 };
2426
2427 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2428 void (*init)(struct CharDriverState *s))
2429 {
2430 CharDriverState *chr;
2431 int i;
2432
2433 if (qemu_opts_id(opts) == NULL) {
2434 fprintf(stderr, "chardev: no id specified\n");
2435 return NULL;
2436 }
2437
2438 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2439 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2440 break;
2441 }
2442 if (i == ARRAY_SIZE(backend_table)) {
2443 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2444 qemu_opt_get(opts, "backend"));
2445 return NULL;
2446 }
2447
2448 chr = backend_table[i].open(opts);
2449 if (!chr) {
2450 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2451 qemu_opt_get(opts, "backend"));
2452 return NULL;
2453 }
2454
2455 if (!chr->filename)
2456 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2457 chr->init = init;
2458 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2459
2460 if (qemu_opt_get_bool(opts, "mux", 0)) {
2461 CharDriverState *base = chr;
2462 int len = strlen(qemu_opts_id(opts)) + 6;
2463 base->label = qemu_malloc(len);
2464 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2465 chr = qemu_chr_open_mux(base);
2466 chr->filename = base->filename;
2467 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2468 }
2469 chr->label = qemu_strdup(qemu_opts_id(opts));
2470 return chr;
2471 }
2472
2473 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2474 {
2475 const char *p;
2476 CharDriverState *chr;
2477 QemuOpts *opts;
2478
2479 if (strstart(filename, "chardev:", &p)) {
2480 return qemu_chr_find(p);
2481 }
2482
2483 opts = qemu_chr_parse_compat(label, filename);
2484 if (!opts)
2485 return NULL;
2486
2487 chr = qemu_chr_open_opts(opts, init);
2488 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2489 monitor_init(chr, MONITOR_USE_READLINE);
2490 }
2491 return chr;
2492 }
2493
2494 void qemu_chr_close(CharDriverState *chr)
2495 {
2496 QTAILQ_REMOVE(&chardevs, chr, next);
2497 if (chr->chr_close)
2498 chr->chr_close(chr);
2499 qemu_free(chr->filename);
2500 qemu_free(chr->label);
2501 qemu_free(chr);
2502 }
2503
2504 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2505 {
2506 QDict *chr_dict;
2507 Monitor *mon = opaque;
2508
2509 chr_dict = qobject_to_qdict(obj);
2510 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2511 qdict_get_str(chr_dict, "filename"));
2512 }
2513
2514 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2515 {
2516 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2517 }
2518
2519 /**
2520 * qemu_chr_info(): Character devices information
2521 *
2522 * Each device is represented by a QDict. The returned QObject is a QList
2523 * of all devices.
2524 *
2525 * The QDict contains the following:
2526 *
2527 * - "label": device's label
2528 * - "filename": device's file
2529 *
2530 * Example:
2531 *
2532 * [ { "label": "monitor", "filename", "stdio" },
2533 * { "label": "serial0", "filename": "vc" } ]
2534 */
2535 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2536 {
2537 QList *chr_list;
2538 CharDriverState *chr;
2539
2540 chr_list = qlist_new();
2541
2542 QTAILQ_FOREACH(chr, &chardevs, next) {
2543 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2544 chr->label, chr->filename);
2545 qlist_append_obj(chr_list, obj);
2546 }
2547
2548 *ret_data = QOBJECT(chr_list);
2549 }
2550
2551 CharDriverState *qemu_chr_find(const char *name)
2552 {
2553 CharDriverState *chr;
2554
2555 QTAILQ_FOREACH(chr, &chardevs, next) {
2556 if (strcmp(chr->label, name) != 0)
2557 continue;
2558 return chr;
2559 }
2560 return NULL;
2561 }
Anthony Liguori's QEMU queue