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block/raw-posix: Abort on pread beyond end of non-growable file
[qemu/aliguori-queue.git] / qemu-char.c
blob800ee6c503b6e7cf4479f4ed7d04ce9008fff567
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 tty_serial_init(fd, 115200, 'N', 8, 1);
1184 chr = qemu_chr_open_fd(fd, fd);
1185 if (!chr) {
1186 close(fd);
1187 return NULL;
1188 }
1189 chr->chr_ioctl = tty_serial_ioctl;
1190 return chr;
1191 }
1192 #else /* ! __linux__ && ! __sun__ */
1193 static CharDriverState *qemu_chr_open_pty(void)
1194 {
1195 return NULL;
1196 }
1197 #endif /* __linux__ || __sun__ */
1198
1199 #if defined(__linux__)
1200 typedef struct {
1201 int fd;
1202 int mode;
1203 } ParallelCharDriver;
1204
1205 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1206 {
1207 if (s->mode != mode) {
1208 int m = mode;
1209 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1210 return 0;
1211 s->mode = mode;
1212 }
1213 return 1;
1214 }
1215
1216 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1217 {
1218 ParallelCharDriver *drv = chr->opaque;
1219 int fd = drv->fd;
1220 uint8_t b;
1221
1222 switch(cmd) {
1223 case CHR_IOCTL_PP_READ_DATA:
1224 if (ioctl(fd, PPRDATA, &b) < 0)
1225 return -ENOTSUP;
1226 *(uint8_t *)arg = b;
1227 break;
1228 case CHR_IOCTL_PP_WRITE_DATA:
1229 b = *(uint8_t *)arg;
1230 if (ioctl(fd, PPWDATA, &b) < 0)
1231 return -ENOTSUP;
1232 break;
1233 case CHR_IOCTL_PP_READ_CONTROL:
1234 if (ioctl(fd, PPRCONTROL, &b) < 0)
1235 return -ENOTSUP;
1236 /* Linux gives only the lowest bits, and no way to know data
1237 direction! For better compatibility set the fixed upper
1238 bits. */
1239 *(uint8_t *)arg = b | 0xc0;
1240 break;
1241 case CHR_IOCTL_PP_WRITE_CONTROL:
1242 b = *(uint8_t *)arg;
1243 if (ioctl(fd, PPWCONTROL, &b) < 0)
1244 return -ENOTSUP;
1245 break;
1246 case CHR_IOCTL_PP_READ_STATUS:
1247 if (ioctl(fd, PPRSTATUS, &b) < 0)
1248 return -ENOTSUP;
1249 *(uint8_t *)arg = b;
1250 break;
1251 case CHR_IOCTL_PP_DATA_DIR:
1252 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1253 return -ENOTSUP;
1254 break;
1255 case CHR_IOCTL_PP_EPP_READ_ADDR:
1256 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1257 struct ParallelIOArg *parg = arg;
1258 int n = read(fd, parg->buffer, parg->count);
1259 if (n != parg->count) {
1260 return -EIO;
1261 }
1262 }
1263 break;
1264 case CHR_IOCTL_PP_EPP_READ:
1265 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1266 struct ParallelIOArg *parg = arg;
1267 int n = read(fd, parg->buffer, parg->count);
1268 if (n != parg->count) {
1269 return -EIO;
1270 }
1271 }
1272 break;
1273 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1274 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1275 struct ParallelIOArg *parg = arg;
1276 int n = write(fd, parg->buffer, parg->count);
1277 if (n != parg->count) {
1278 return -EIO;
1279 }
1280 }
1281 break;
1282 case CHR_IOCTL_PP_EPP_WRITE:
1283 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1284 struct ParallelIOArg *parg = arg;
1285 int n = write(fd, parg->buffer, parg->count);
1286 if (n != parg->count) {
1287 return -EIO;
1288 }
1289 }
1290 break;
1291 default:
1292 return -ENOTSUP;
1293 }
1294 return 0;
1295 }
1296
1297 static void pp_close(CharDriverState *chr)
1298 {
1299 ParallelCharDriver *drv = chr->opaque;
1300 int fd = drv->fd;
1301
1302 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1303 ioctl(fd, PPRELEASE);
1304 close(fd);
1305 qemu_free(drv);
1306 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1307 }
1308
1309 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1310 {
1311 const char *filename = qemu_opt_get(opts, "path");
1312 CharDriverState *chr;
1313 ParallelCharDriver *drv;
1314 int fd;
1315
1316 TFR(fd = open(filename, O_RDWR));
1317 if (fd < 0)
1318 return NULL;
1319
1320 if (ioctl(fd, PPCLAIM) < 0) {
1321 close(fd);
1322 return NULL;
1323 }
1324
1325 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1326 drv->fd = fd;
1327 drv->mode = IEEE1284_MODE_COMPAT;
1328
1329 chr = qemu_mallocz(sizeof(CharDriverState));
1330 chr->chr_write = null_chr_write;
1331 chr->chr_ioctl = pp_ioctl;
1332 chr->chr_close = pp_close;
1333 chr->opaque = drv;
1334
1335 qemu_chr_generic_open(chr);
1336
1337 return chr;
1338 }
1339 #endif /* __linux__ */
1340
1341 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1342 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1343 {
1344 int fd = (int)chr->opaque;
1345 uint8_t b;
1346
1347 switch(cmd) {
1348 case CHR_IOCTL_PP_READ_DATA:
1349 if (ioctl(fd, PPIGDATA, &b) < 0)
1350 return -ENOTSUP;
1351 *(uint8_t *)arg = b;
1352 break;
1353 case CHR_IOCTL_PP_WRITE_DATA:
1354 b = *(uint8_t *)arg;
1355 if (ioctl(fd, PPISDATA, &b) < 0)
1356 return -ENOTSUP;
1357 break;
1358 case CHR_IOCTL_PP_READ_CONTROL:
1359 if (ioctl(fd, PPIGCTRL, &b) < 0)
1360 return -ENOTSUP;
1361 *(uint8_t *)arg = b;
1362 break;
1363 case CHR_IOCTL_PP_WRITE_CONTROL:
1364 b = *(uint8_t *)arg;
1365 if (ioctl(fd, PPISCTRL, &b) < 0)
1366 return -ENOTSUP;
1367 break;
1368 case CHR_IOCTL_PP_READ_STATUS:
1369 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1370 return -ENOTSUP;
1371 *(uint8_t *)arg = b;
1372 break;
1373 default:
1374 return -ENOTSUP;
1375 }
1376 return 0;
1377 }
1378
1379 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1380 {
1381 const char *filename = qemu_opt_get(opts, "path");
1382 CharDriverState *chr;
1383 int fd;
1384
1385 fd = open(filename, O_RDWR);
1386 if (fd < 0)
1387 return NULL;
1388
1389 chr = qemu_mallocz(sizeof(CharDriverState));
1390 chr->opaque = (void *)fd;
1391 chr->chr_write = null_chr_write;
1392 chr->chr_ioctl = pp_ioctl;
1393 return chr;
1394 }
1395 #endif
1396
1397 #else /* _WIN32 */
1398
1399 typedef struct {
1400 int max_size;
1401 HANDLE hcom, hrecv, hsend;
1402 OVERLAPPED orecv, osend;
1403 BOOL fpipe;
1404 DWORD len;
1405 } WinCharState;
1406
1407 #define NSENDBUF 2048
1408 #define NRECVBUF 2048
1409 #define MAXCONNECT 1
1410 #define NTIMEOUT 5000
1411
1412 static int win_chr_poll(void *opaque);
1413 static int win_chr_pipe_poll(void *opaque);
1414
1415 static void win_chr_close(CharDriverState *chr)
1416 {
1417 WinCharState *s = chr->opaque;
1418
1419 if (s->hsend) {
1420 CloseHandle(s->hsend);
1421 s->hsend = NULL;
1422 }
1423 if (s->hrecv) {
1424 CloseHandle(s->hrecv);
1425 s->hrecv = NULL;
1426 }
1427 if (s->hcom) {
1428 CloseHandle(s->hcom);
1429 s->hcom = NULL;
1430 }
1431 if (s->fpipe)
1432 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1433 else
1434 qemu_del_polling_cb(win_chr_poll, chr);
1435
1436 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1437 }
1438
1439 static int win_chr_init(CharDriverState *chr, const char *filename)
1440 {
1441 WinCharState *s = chr->opaque;
1442 COMMCONFIG comcfg;
1443 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1444 COMSTAT comstat;
1445 DWORD size;
1446 DWORD err;
1447
1448 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1449 if (!s->hsend) {
1450 fprintf(stderr, "Failed CreateEvent\n");
1451 goto fail;
1452 }
1453 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1454 if (!s->hrecv) {
1455 fprintf(stderr, "Failed CreateEvent\n");
1456 goto fail;
1457 }
1458
1459 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1460 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1461 if (s->hcom == INVALID_HANDLE_VALUE) {
1462 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1463 s->hcom = NULL;
1464 goto fail;
1465 }
1466
1467 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1468 fprintf(stderr, "Failed SetupComm\n");
1469 goto fail;
1470 }
1471
1472 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1473 size = sizeof(COMMCONFIG);
1474 GetDefaultCommConfig(filename, &comcfg, &size);
1475 comcfg.dcb.DCBlength = sizeof(DCB);
1476 CommConfigDialog(filename, NULL, &comcfg);
1477
1478 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1479 fprintf(stderr, "Failed SetCommState\n");
1480 goto fail;
1481 }
1482
1483 if (!SetCommMask(s->hcom, EV_ERR)) {
1484 fprintf(stderr, "Failed SetCommMask\n");
1485 goto fail;
1486 }
1487
1488 cto.ReadIntervalTimeout = MAXDWORD;
1489 if (!SetCommTimeouts(s->hcom, &cto)) {
1490 fprintf(stderr, "Failed SetCommTimeouts\n");
1491 goto fail;
1492 }
1493
1494 if (!ClearCommError(s->hcom, &err, &comstat)) {
1495 fprintf(stderr, "Failed ClearCommError\n");
1496 goto fail;
1497 }
1498 qemu_add_polling_cb(win_chr_poll, chr);
1499 return 0;
1500
1501 fail:
1502 win_chr_close(chr);
1503 return -1;
1504 }
1505
1506 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1507 {
1508 WinCharState *s = chr->opaque;
1509 DWORD len, ret, size, err;
1510
1511 len = len1;
1512 ZeroMemory(&s->osend, sizeof(s->osend));
1513 s->osend.hEvent = s->hsend;
1514 while (len > 0) {
1515 if (s->hsend)
1516 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1517 else
1518 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1519 if (!ret) {
1520 err = GetLastError();
1521 if (err == ERROR_IO_PENDING) {
1522 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1523 if (ret) {
1524 buf += size;
1525 len -= size;
1526 } else {
1527 break;
1528 }
1529 } else {
1530 break;
1531 }
1532 } else {
1533 buf += size;
1534 len -= size;
1535 }
1536 }
1537 return len1 - len;
1538 }
1539
1540 static int win_chr_read_poll(CharDriverState *chr)
1541 {
1542 WinCharState *s = chr->opaque;
1543
1544 s->max_size = qemu_chr_can_read(chr);
1545 return s->max_size;
1546 }
1547
1548 static void win_chr_readfile(CharDriverState *chr)
1549 {
1550 WinCharState *s = chr->opaque;
1551 int ret, err;
1552 uint8_t buf[READ_BUF_LEN];
1553 DWORD size;
1554
1555 ZeroMemory(&s->orecv, sizeof(s->orecv));
1556 s->orecv.hEvent = s->hrecv;
1557 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1558 if (!ret) {
1559 err = GetLastError();
1560 if (err == ERROR_IO_PENDING) {
1561 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1562 }
1563 }
1564
1565 if (size > 0) {
1566 qemu_chr_read(chr, buf, size);
1567 }
1568 }
1569
1570 static void win_chr_read(CharDriverState *chr)
1571 {
1572 WinCharState *s = chr->opaque;
1573
1574 if (s->len > s->max_size)
1575 s->len = s->max_size;
1576 if (s->len == 0)
1577 return;
1578
1579 win_chr_readfile(chr);
1580 }
1581
1582 static int win_chr_poll(void *opaque)
1583 {
1584 CharDriverState *chr = opaque;
1585 WinCharState *s = chr->opaque;
1586 COMSTAT status;
1587 DWORD comerr;
1588
1589 ClearCommError(s->hcom, &comerr, &status);
1590 if (status.cbInQue > 0) {
1591 s->len = status.cbInQue;
1592 win_chr_read_poll(chr);
1593 win_chr_read(chr);
1594 return 1;
1595 }
1596 return 0;
1597 }
1598
1599 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1600 {
1601 const char *filename = qemu_opt_get(opts, "path");
1602 CharDriverState *chr;
1603 WinCharState *s;
1604
1605 chr = qemu_mallocz(sizeof(CharDriverState));
1606 s = qemu_mallocz(sizeof(WinCharState));
1607 chr->opaque = s;
1608 chr->chr_write = win_chr_write;
1609 chr->chr_close = win_chr_close;
1610
1611 if (win_chr_init(chr, filename) < 0) {
1612 free(s);
1613 free(chr);
1614 return NULL;
1615 }
1616 qemu_chr_generic_open(chr);
1617 return chr;
1618 }
1619
1620 static int win_chr_pipe_poll(void *opaque)
1621 {
1622 CharDriverState *chr = opaque;
1623 WinCharState *s = chr->opaque;
1624 DWORD size;
1625
1626 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1627 if (size > 0) {
1628 s->len = size;
1629 win_chr_read_poll(chr);
1630 win_chr_read(chr);
1631 return 1;
1632 }
1633 return 0;
1634 }
1635
1636 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1637 {
1638 WinCharState *s = chr->opaque;
1639 OVERLAPPED ov;
1640 int ret;
1641 DWORD size;
1642 char openname[256];
1643
1644 s->fpipe = TRUE;
1645
1646 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1647 if (!s->hsend) {
1648 fprintf(stderr, "Failed CreateEvent\n");
1649 goto fail;
1650 }
1651 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1652 if (!s->hrecv) {
1653 fprintf(stderr, "Failed CreateEvent\n");
1654 goto fail;
1655 }
1656
1657 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1658 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1659 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1660 PIPE_WAIT,
1661 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1662 if (s->hcom == INVALID_HANDLE_VALUE) {
1663 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1664 s->hcom = NULL;
1665 goto fail;
1666 }
1667
1668 ZeroMemory(&ov, sizeof(ov));
1669 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1670 ret = ConnectNamedPipe(s->hcom, &ov);
1671 if (ret) {
1672 fprintf(stderr, "Failed ConnectNamedPipe\n");
1673 goto fail;
1674 }
1675
1676 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1677 if (!ret) {
1678 fprintf(stderr, "Failed GetOverlappedResult\n");
1679 if (ov.hEvent) {
1680 CloseHandle(ov.hEvent);
1681 ov.hEvent = NULL;
1682 }
1683 goto fail;
1684 }
1685
1686 if (ov.hEvent) {
1687 CloseHandle(ov.hEvent);
1688 ov.hEvent = NULL;
1689 }
1690 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1691 return 0;
1692
1693 fail:
1694 win_chr_close(chr);
1695 return -1;
1696 }
1697
1698
1699 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1700 {
1701 const char *filename = qemu_opt_get(opts, "path");
1702 CharDriverState *chr;
1703 WinCharState *s;
1704
1705 chr = qemu_mallocz(sizeof(CharDriverState));
1706 s = qemu_mallocz(sizeof(WinCharState));
1707 chr->opaque = s;
1708 chr->chr_write = win_chr_write;
1709 chr->chr_close = win_chr_close;
1710
1711 if (win_chr_pipe_init(chr, filename) < 0) {
1712 free(s);
1713 free(chr);
1714 return NULL;
1715 }
1716 qemu_chr_generic_open(chr);
1717 return chr;
1718 }
1719
1720 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1721 {
1722 CharDriverState *chr;
1723 WinCharState *s;
1724
1725 chr = qemu_mallocz(sizeof(CharDriverState));
1726 s = qemu_mallocz(sizeof(WinCharState));
1727 s->hcom = fd_out;
1728 chr->opaque = s;
1729 chr->chr_write = win_chr_write;
1730 qemu_chr_generic_open(chr);
1731 return chr;
1732 }
1733
1734 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1735 {
1736 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1737 }
1738
1739 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1740 {
1741 const char *file_out = qemu_opt_get(opts, "path");
1742 HANDLE fd_out;
1743
1744 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1745 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1746 if (fd_out == INVALID_HANDLE_VALUE)
1747 return NULL;
1748
1749 return qemu_chr_open_win_file(fd_out);
1750 }
1751 #endif /* !_WIN32 */
1752
1753 /***********************************************************/
1754 /* UDP Net console */
1755
1756 typedef struct {
1757 int fd;
1758 uint8_t buf[READ_BUF_LEN];
1759 int bufcnt;
1760 int bufptr;
1761 int max_size;
1762 } NetCharDriver;
1763
1764 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1765 {
1766 NetCharDriver *s = chr->opaque;
1767
1768 return send(s->fd, (const void *)buf, len, 0);
1769 }
1770
1771 static int udp_chr_read_poll(void *opaque)
1772 {
1773 CharDriverState *chr = opaque;
1774 NetCharDriver *s = chr->opaque;
1775
1776 s->max_size = qemu_chr_can_read(chr);
1777
1778 /* If there were any stray characters in the queue process them
1779 * first
1780 */
1781 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1782 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1783 s->bufptr++;
1784 s->max_size = qemu_chr_can_read(chr);
1785 }
1786 return s->max_size;
1787 }
1788
1789 static void udp_chr_read(void *opaque)
1790 {
1791 CharDriverState *chr = opaque;
1792 NetCharDriver *s = chr->opaque;
1793
1794 if (s->max_size == 0)
1795 return;
1796 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1797 s->bufptr = s->bufcnt;
1798 if (s->bufcnt <= 0)
1799 return;
1800
1801 s->bufptr = 0;
1802 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1803 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1804 s->bufptr++;
1805 s->max_size = qemu_chr_can_read(chr);
1806 }
1807 }
1808
1809 static void udp_chr_update_read_handler(CharDriverState *chr)
1810 {
1811 NetCharDriver *s = chr->opaque;
1812
1813 if (s->fd >= 0) {
1814 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1815 udp_chr_read, NULL, chr);
1816 }
1817 }
1818
1819 static void udp_chr_close(CharDriverState *chr)
1820 {
1821 NetCharDriver *s = chr->opaque;
1822 if (s->fd >= 0) {
1823 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1824 closesocket(s->fd);
1825 }
1826 qemu_free(s);
1827 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1828 }
1829
1830 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1831 {
1832 CharDriverState *chr = NULL;
1833 NetCharDriver *s = NULL;
1834 int fd = -1;
1835
1836 chr = qemu_mallocz(sizeof(CharDriverState));
1837 s = qemu_mallocz(sizeof(NetCharDriver));
1838
1839 fd = inet_dgram_opts(opts);
1840 if (fd < 0) {
1841 fprintf(stderr, "inet_dgram_opts failed\n");
1842 goto return_err;
1843 }
1844
1845 s->fd = fd;
1846 s->bufcnt = 0;
1847 s->bufptr = 0;
1848 chr->opaque = s;
1849 chr->chr_write = udp_chr_write;
1850 chr->chr_update_read_handler = udp_chr_update_read_handler;
1851 chr->chr_close = udp_chr_close;
1852 return chr;
1853
1854 return_err:
1855 if (chr)
1856 free(chr);
1857 if (s)
1858 free(s);
1859 if (fd >= 0)
1860 closesocket(fd);
1861 return NULL;
1862 }
1863
1864 /***********************************************************/
1865 /* TCP Net console */
1866
1867 typedef struct {
1868 int fd, listen_fd;
1869 int connected;
1870 int max_size;
1871 int do_telnetopt;
1872 int do_nodelay;
1873 int is_unix;
1874 int msgfd;
1875 } TCPCharDriver;
1876
1877 static void tcp_chr_accept(void *opaque);
1878
1879 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1880 {
1881 TCPCharDriver *s = chr->opaque;
1882 if (s->connected) {
1883 return send_all(s->fd, buf, len);
1884 } else {
1885 /* XXX: indicate an error ? */
1886 return len;
1887 }
1888 }
1889
1890 static int tcp_chr_read_poll(void *opaque)
1891 {
1892 CharDriverState *chr = opaque;
1893 TCPCharDriver *s = chr->opaque;
1894 if (!s->connected)
1895 return 0;
1896 s->max_size = qemu_chr_can_read(chr);
1897 return s->max_size;
1898 }
1899
1900 #define IAC 255
1901 #define IAC_BREAK 243
1902 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1903 TCPCharDriver *s,
1904 uint8_t *buf, int *size)
1905 {
1906 /* Handle any telnet client's basic IAC options to satisfy char by
1907 * char mode with no echo. All IAC options will be removed from
1908 * the buf and the do_telnetopt variable will be used to track the
1909 * state of the width of the IAC information.
1910 *
1911 * IAC commands come in sets of 3 bytes with the exception of the
1912 * "IAC BREAK" command and the double IAC.
1913 */
1914
1915 int i;
1916 int j = 0;
1917
1918 for (i = 0; i < *size; i++) {
1919 if (s->do_telnetopt > 1) {
1920 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1921 /* Double IAC means send an IAC */
1922 if (j != i)
1923 buf[j] = buf[i];
1924 j++;
1925 s->do_telnetopt = 1;
1926 } else {
1927 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1928 /* Handle IAC break commands by sending a serial break */
1929 qemu_chr_event(chr, CHR_EVENT_BREAK);
1930 s->do_telnetopt++;
1931 }
1932 s->do_telnetopt++;
1933 }
1934 if (s->do_telnetopt >= 4) {
1935 s->do_telnetopt = 1;
1936 }
1937 } else {
1938 if ((unsigned char)buf[i] == IAC) {
1939 s->do_telnetopt = 2;
1940 } else {
1941 if (j != i)
1942 buf[j] = buf[i];
1943 j++;
1944 }
1945 }
1946 }
1947 *size = j;
1948 }
1949
1950 static int tcp_get_msgfd(CharDriverState *chr)
1951 {
1952 TCPCharDriver *s = chr->opaque;
1953
1954 return s->msgfd;
1955 }
1956
1957 #ifndef _WIN32
1958 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1959 {
1960 TCPCharDriver *s = chr->opaque;
1961 struct cmsghdr *cmsg;
1962
1963 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
1964 int fd;
1965
1966 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
1967 cmsg->cmsg_level != SOL_SOCKET ||
1968 cmsg->cmsg_type != SCM_RIGHTS)
1969 continue;
1970
1971 fd = *((int *)CMSG_DATA(cmsg));
1972 if (fd < 0)
1973 continue;
1974
1975 if (s->msgfd != -1)
1976 close(s->msgfd);
1977 s->msgfd = fd;
1978 }
1979 }
1980
1981 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
1982 {
1983 TCPCharDriver *s = chr->opaque;
1984 struct msghdr msg = { NULL, };
1985 struct iovec iov[1];
1986 union {
1987 struct cmsghdr cmsg;
1988 char control[CMSG_SPACE(sizeof(int))];
1989 } msg_control;
1990 ssize_t ret;
1991
1992 iov[0].iov_base = buf;
1993 iov[0].iov_len = len;
1994
1995 msg.msg_iov = iov;
1996 msg.msg_iovlen = 1;
1997 msg.msg_control = &msg_control;
1998 msg.msg_controllen = sizeof(msg_control);
1999
2000 ret = recvmsg(s->fd, &msg, 0);
2001 if (ret > 0 && s->is_unix)
2002 unix_process_msgfd(chr, &msg);
2003
2004 return ret;
2005 }
2006 #else
2007 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2008 {
2009 TCPCharDriver *s = chr->opaque;
2010 return recv(s->fd, buf, len, 0);
2011 }
2012 #endif
2013
2014 static void tcp_chr_read(void *opaque)
2015 {
2016 CharDriverState *chr = opaque;
2017 TCPCharDriver *s = chr->opaque;
2018 uint8_t buf[READ_BUF_LEN];
2019 int len, size;
2020
2021 if (!s->connected || s->max_size <= 0)
2022 return;
2023 len = sizeof(buf);
2024 if (len > s->max_size)
2025 len = s->max_size;
2026 size = tcp_chr_recv(chr, (void *)buf, len);
2027 if (size == 0) {
2028 /* connection closed */
2029 s->connected = 0;
2030 if (s->listen_fd >= 0) {
2031 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2032 }
2033 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2034 closesocket(s->fd);
2035 s->fd = -1;
2036 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2037 } else if (size > 0) {
2038 if (s->do_telnetopt)
2039 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2040 if (size > 0)
2041 qemu_chr_read(chr, buf, size);
2042 if (s->msgfd != -1) {
2043 close(s->msgfd);
2044 s->msgfd = -1;
2045 }
2046 }
2047 }
2048
2049 static void tcp_chr_connect(void *opaque)
2050 {
2051 CharDriverState *chr = opaque;
2052 TCPCharDriver *s = chr->opaque;
2053
2054 s->connected = 1;
2055 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2056 tcp_chr_read, NULL, chr);
2057 qemu_chr_generic_open(chr);
2058 }
2059
2060 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2061 static void tcp_chr_telnet_init(int fd)
2062 {
2063 char buf[3];
2064 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2065 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2066 send(fd, (char *)buf, 3, 0);
2067 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2068 send(fd, (char *)buf, 3, 0);
2069 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2070 send(fd, (char *)buf, 3, 0);
2071 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2072 send(fd, (char *)buf, 3, 0);
2073 }
2074
2075 static void socket_set_nodelay(int fd)
2076 {
2077 int val = 1;
2078 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2079 }
2080
2081 static void tcp_chr_accept(void *opaque)
2082 {
2083 CharDriverState *chr = opaque;
2084 TCPCharDriver *s = chr->opaque;
2085 struct sockaddr_in saddr;
2086 #ifndef _WIN32
2087 struct sockaddr_un uaddr;
2088 #endif
2089 struct sockaddr *addr;
2090 socklen_t len;
2091 int fd;
2092
2093 for(;;) {
2094 #ifndef _WIN32
2095 if (s->is_unix) {
2096 len = sizeof(uaddr);
2097 addr = (struct sockaddr *)&uaddr;
2098 } else
2099 #endif
2100 {
2101 len = sizeof(saddr);
2102 addr = (struct sockaddr *)&saddr;
2103 }
2104 fd = qemu_accept(s->listen_fd, addr, &len);
2105 if (fd < 0 && errno != EINTR) {
2106 return;
2107 } else if (fd >= 0) {
2108 if (s->do_telnetopt)
2109 tcp_chr_telnet_init(fd);
2110 break;
2111 }
2112 }
2113 socket_set_nonblock(fd);
2114 if (s->do_nodelay)
2115 socket_set_nodelay(fd);
2116 s->fd = fd;
2117 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2118 tcp_chr_connect(chr);
2119 }
2120
2121 static void tcp_chr_close(CharDriverState *chr)
2122 {
2123 TCPCharDriver *s = chr->opaque;
2124 if (s->fd >= 0) {
2125 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2126 closesocket(s->fd);
2127 }
2128 if (s->listen_fd >= 0) {
2129 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2130 closesocket(s->listen_fd);
2131 }
2132 qemu_free(s);
2133 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2134 }
2135
2136 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2137 {
2138 CharDriverState *chr = NULL;
2139 TCPCharDriver *s = NULL;
2140 int fd = -1;
2141 int is_listen;
2142 int is_waitconnect;
2143 int do_nodelay;
2144 int is_unix;
2145 int is_telnet;
2146
2147 is_listen = qemu_opt_get_bool(opts, "server", 0);
2148 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2149 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2150 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2151 is_unix = qemu_opt_get(opts, "path") != NULL;
2152 if (!is_listen)
2153 is_waitconnect = 0;
2154
2155 chr = qemu_mallocz(sizeof(CharDriverState));
2156 s = qemu_mallocz(sizeof(TCPCharDriver));
2157
2158 if (is_unix) {
2159 if (is_listen) {
2160 fd = unix_listen_opts(opts);
2161 } else {
2162 fd = unix_connect_opts(opts);
2163 }
2164 } else {
2165 if (is_listen) {
2166 fd = inet_listen_opts(opts, 0);
2167 } else {
2168 fd = inet_connect_opts(opts);
2169 }
2170 }
2171 if (fd < 0)
2172 goto fail;
2173
2174 if (!is_waitconnect)
2175 socket_set_nonblock(fd);
2176
2177 s->connected = 0;
2178 s->fd = -1;
2179 s->listen_fd = -1;
2180 s->msgfd = -1;
2181 s->is_unix = is_unix;
2182 s->do_nodelay = do_nodelay && !is_unix;
2183
2184 chr->opaque = s;
2185 chr->chr_write = tcp_chr_write;
2186 chr->chr_close = tcp_chr_close;
2187 chr->get_msgfd = tcp_get_msgfd;
2188
2189 if (is_listen) {
2190 s->listen_fd = fd;
2191 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2192 if (is_telnet)
2193 s->do_telnetopt = 1;
2194
2195 } else {
2196 s->connected = 1;
2197 s->fd = fd;
2198 socket_set_nodelay(fd);
2199 tcp_chr_connect(chr);
2200 }
2201
2202 /* for "info chardev" monitor command */
2203 chr->filename = qemu_malloc(256);
2204 if (is_unix) {
2205 snprintf(chr->filename, 256, "unix:%s%s",
2206 qemu_opt_get(opts, "path"),
2207 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2208 } else if (is_telnet) {
2209 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2210 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2211 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2212 } else {
2213 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2214 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2215 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2216 }
2217
2218 if (is_listen && is_waitconnect) {
2219 printf("QEMU waiting for connection on: %s\n",
2220 chr->filename);
2221 tcp_chr_accept(chr);
2222 socket_set_nonblock(s->listen_fd);
2223 }
2224 return chr;
2225
2226 fail:
2227 if (fd >= 0)
2228 closesocket(fd);
2229 qemu_free(s);
2230 qemu_free(chr);
2231 return NULL;
2232 }
2233
2234 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2235 {
2236 char host[65], port[33], width[8], height[8];
2237 int pos;
2238 const char *p;
2239 QemuOpts *opts;
2240
2241 opts = qemu_opts_create(&qemu_chardev_opts, label, 1);
2242 if (NULL == opts)
2243 return NULL;
2244
2245 if (strstart(filename, "mon:", &p)) {
2246 filename = p;
2247 qemu_opt_set(opts, "mux", "on");
2248 }
2249
2250 if (strcmp(filename, "null") == 0 ||
2251 strcmp(filename, "pty") == 0 ||
2252 strcmp(filename, "msmouse") == 0 ||
2253 strcmp(filename, "braille") == 0 ||
2254 strcmp(filename, "stdio") == 0) {
2255 qemu_opt_set(opts, "backend", filename);
2256 return opts;
2257 }
2258 if (strstart(filename, "vc", &p)) {
2259 qemu_opt_set(opts, "backend", "vc");
2260 if (*p == ':') {
2261 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2262 /* pixels */
2263 qemu_opt_set(opts, "width", width);
2264 qemu_opt_set(opts, "height", height);
2265 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2266 /* chars */
2267 qemu_opt_set(opts, "cols", width);
2268 qemu_opt_set(opts, "rows", height);
2269 } else {
2270 goto fail;
2271 }
2272 }
2273 return opts;
2274 }
2275 if (strcmp(filename, "con:") == 0) {
2276 qemu_opt_set(opts, "backend", "console");
2277 return opts;
2278 }
2279 if (strstart(filename, "COM", NULL)) {
2280 qemu_opt_set(opts, "backend", "serial");
2281 qemu_opt_set(opts, "path", filename);
2282 return opts;
2283 }
2284 if (strstart(filename, "file:", &p)) {
2285 qemu_opt_set(opts, "backend", "file");
2286 qemu_opt_set(opts, "path", p);
2287 return opts;
2288 }
2289 if (strstart(filename, "pipe:", &p)) {
2290 qemu_opt_set(opts, "backend", "pipe");
2291 qemu_opt_set(opts, "path", p);
2292 return opts;
2293 }
2294 if (strstart(filename, "tcp:", &p) ||
2295 strstart(filename, "telnet:", &p)) {
2296 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2297 host[0] = 0;
2298 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2299 goto fail;
2300 }
2301 qemu_opt_set(opts, "backend", "socket");
2302 qemu_opt_set(opts, "host", host);
2303 qemu_opt_set(opts, "port", port);
2304 if (p[pos] == ',') {
2305 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2306 goto fail;
2307 }
2308 if (strstart(filename, "telnet:", &p))
2309 qemu_opt_set(opts, "telnet", "on");
2310 return opts;
2311 }
2312 if (strstart(filename, "udp:", &p)) {
2313 qemu_opt_set(opts, "backend", "udp");
2314 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2315 host[0] = 0;
2316 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2317 fprintf(stderr, "udp #1\n");
2318 goto fail;
2319 }
2320 }
2321 qemu_opt_set(opts, "host", host);
2322 qemu_opt_set(opts, "port", port);
2323 if (p[pos] == '@') {
2324 p += pos + 1;
2325 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2326 host[0] = 0;
2327 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2328 fprintf(stderr, "udp #2\n");
2329 goto fail;
2330 }
2331 }
2332 qemu_opt_set(opts, "localaddr", host);
2333 qemu_opt_set(opts, "localport", port);
2334 }
2335 return opts;
2336 }
2337 if (strstart(filename, "unix:", &p)) {
2338 qemu_opt_set(opts, "backend", "socket");
2339 if (qemu_opts_do_parse(opts, p, "path") != 0)
2340 goto fail;
2341 return opts;
2342 }
2343 if (strstart(filename, "/dev/parport", NULL) ||
2344 strstart(filename, "/dev/ppi", NULL)) {
2345 qemu_opt_set(opts, "backend", "parport");
2346 qemu_opt_set(opts, "path", filename);
2347 return opts;
2348 }
2349 if (strstart(filename, "/dev/", NULL)) {
2350 qemu_opt_set(opts, "backend", "tty");
2351 qemu_opt_set(opts, "path", filename);
2352 return opts;
2353 }
2354
2355 fail:
2356 fprintf(stderr, "%s: fail on \"%s\"\n", __FUNCTION__, filename);
2357 qemu_opts_del(opts);
2358 return NULL;
2359 }
2360
2361 static const struct {
2362 const char *name;
2363 CharDriverState *(*open)(QemuOpts *opts);
2364 } backend_table[] = {
2365 { .name = "null", .open = qemu_chr_open_null },
2366 { .name = "socket", .open = qemu_chr_open_socket },
2367 { .name = "udp", .open = qemu_chr_open_udp },
2368 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2369 { .name = "vc", .open = text_console_init },
2370 #ifdef _WIN32
2371 { .name = "file", .open = qemu_chr_open_win_file_out },
2372 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2373 { .name = "console", .open = qemu_chr_open_win_con },
2374 { .name = "serial", .open = qemu_chr_open_win },
2375 #else
2376 { .name = "file", .open = qemu_chr_open_file_out },
2377 { .name = "pipe", .open = qemu_chr_open_pipe },
2378 { .name = "pty", .open = qemu_chr_open_pty },
2379 { .name = "stdio", .open = qemu_chr_open_stdio },
2380 #endif
2381 #ifdef CONFIG_BRLAPI
2382 { .name = "braille", .open = chr_baum_init },
2383 #endif
2384 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2385 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2386 || defined(__FreeBSD_kernel__)
2387 { .name = "tty", .open = qemu_chr_open_tty },
2388 #endif
2389 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2390 || defined(__FreeBSD_kernel__)
2391 { .name = "parport", .open = qemu_chr_open_pp },
2392 #endif
2393 };
2394
2395 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2396 void (*init)(struct CharDriverState *s))
2397 {
2398 CharDriverState *chr;
2399 int i;
2400
2401 if (qemu_opts_id(opts) == NULL) {
2402 fprintf(stderr, "chardev: no id specified\n");
2403 return NULL;
2404 }
2405
2406 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2407 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2408 break;
2409 }
2410 if (i == ARRAY_SIZE(backend_table)) {
2411 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2412 qemu_opt_get(opts, "backend"));
2413 return NULL;
2414 }
2415
2416 chr = backend_table[i].open(opts);
2417 if (!chr) {
2418 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2419 qemu_opt_get(opts, "backend"));
2420 return NULL;
2421 }
2422
2423 if (!chr->filename)
2424 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2425 chr->init = init;
2426 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2427
2428 if (qemu_opt_get_bool(opts, "mux", 0)) {
2429 CharDriverState *base = chr;
2430 int len = strlen(qemu_opts_id(opts)) + 6;
2431 base->label = qemu_malloc(len);
2432 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2433 chr = qemu_chr_open_mux(base);
2434 chr->filename = base->filename;
2435 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2436 }
2437 chr->label = qemu_strdup(qemu_opts_id(opts));
2438 return chr;
2439 }
2440
2441 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2442 {
2443 const char *p;
2444 CharDriverState *chr;
2445 QemuOpts *opts;
2446
2447 if (strstart(filename, "chardev:", &p)) {
2448 return qemu_chr_find(p);
2449 }
2450
2451 opts = qemu_chr_parse_compat(label, filename);
2452 if (!opts)
2453 return NULL;
2454
2455 chr = qemu_chr_open_opts(opts, init);
2456 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2457 monitor_init(chr, MONITOR_USE_READLINE);
2458 }
2459 return chr;
2460 }
2461
2462 void qemu_chr_close(CharDriverState *chr)
2463 {
2464 QTAILQ_REMOVE(&chardevs, chr, next);
2465 if (chr->chr_close)
2466 chr->chr_close(chr);
2467 qemu_free(chr->filename);
2468 qemu_free(chr->label);
2469 qemu_free(chr);
2470 }
2471
2472 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2473 {
2474 QDict *chr_dict;
2475 Monitor *mon = opaque;
2476
2477 chr_dict = qobject_to_qdict(obj);
2478 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2479 qdict_get_str(chr_dict, "filename"));
2480 }
2481
2482 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2483 {
2484 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2485 }
2486
2487 /**
2488 * qemu_chr_info(): Character devices information
2489 *
2490 * Each device is represented by a QDict. The returned QObject is a QList
2491 * of all devices.
2492 *
2493 * The QDict contains the following:
2494 *
2495 * - "label": device's label
2496 * - "filename": device's file
2497 *
2498 * Example:
2499 *
2500 * [ { "label": "monitor", "filename", "stdio" },
2501 * { "label": "serial0", "filename": "vc" } ]
2502 */
2503 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2504 {
2505 QList *chr_list;
2506 CharDriverState *chr;
2507
2508 chr_list = qlist_new();
2509
2510 QTAILQ_FOREACH(chr, &chardevs, next) {
2511 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2512 chr->label, chr->filename);
2513 qlist_append_obj(chr_list, obj);
2514 }
2515
2516 *ret_data = QOBJECT(chr_list);
2517 }
2518
2519 CharDriverState *qemu_chr_find(const char *name)
2520 {
2521 CharDriverState *chr;
2522
2523 QTAILQ_FOREACH(chr, &chardevs, next) {
2524 if (strcmp(chr->label, name) != 0)
2525 continue;
2526 return chr;
2527 }
2528 return NULL;
2529 }
Anthony Liguori's QEMU queue