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