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Add support for generating a systemtap tapset static probes
[qemu/mdroth.git] / qemu-char.c
blob88997f9d5aa1086d2b6a052b9ff2e3f6d5ab4858
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 "hw/usb.h"
32 #include "hw/baum.h"
33 #include "hw/msmouse.h"
34 #include "qemu-objects.h"
35
36 #include <unistd.h>
37 #include <fcntl.h>
38 #include <signal.h>
39 #include <time.h>
40 #include <errno.h>
41 #include <sys/time.h>
42 #include <zlib.h>
43
44 #ifndef _WIN32
45 #include <sys/times.h>
46 #include <sys/wait.h>
47 #include <termios.h>
48 #include <sys/mman.h>
49 #include <sys/ioctl.h>
50 #include <sys/resource.h>
51 #include <sys/socket.h>
52 #include <netinet/in.h>
53 #include <net/if.h>
54 #include <arpa/inet.h>
55 #include <dirent.h>
56 #include <netdb.h>
57 #include <sys/select.h>
58 #ifdef CONFIG_BSD
59 #include <sys/stat.h>
60 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61 #include <libutil.h>
62 #include <dev/ppbus/ppi.h>
63 #include <dev/ppbus/ppbconf.h>
64 #if defined(__GLIBC__)
65 #include <pty.h>
66 #endif
67 #elif defined(__DragonFly__)
68 #include <libutil.h>
69 #include <dev/misc/ppi/ppi.h>
70 #include <bus/ppbus/ppbconf.h>
71 #else
72 #include <util.h>
73 #endif
74 #else
75 #ifdef __linux__
76 #include <pty.h>
77
78 #include <linux/ppdev.h>
79 #include <linux/parport.h>
80 #endif
81 #ifdef __sun__
82 #include <sys/stat.h>
83 #include <sys/ethernet.h>
84 #include <sys/sockio.h>
85 #include <netinet/arp.h>
86 #include <netinet/in.h>
87 #include <netinet/in_systm.h>
88 #include <netinet/ip.h>
89 #include <netinet/ip_icmp.h> // must come after ip.h
90 #include <netinet/udp.h>
91 #include <netinet/tcp.h>
92 #include <net/if.h>
93 #include <syslog.h>
94 #include <stropts.h>
95 #endif
96 #endif
97 #endif
98
99 #include "qemu_socket.h"
100
101 #define READ_BUF_LEN 4096
102
103 /***********************************************************/
104 /* character device */
105
106 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
107 QTAILQ_HEAD_INITIALIZER(chardevs);
108
109 static void qemu_chr_event(CharDriverState *s, int event)
110 {
111 /* Keep track if the char device is open */
112 switch (event) {
113 case CHR_EVENT_OPENED:
114 s->opened = 1;
115 break;
116 case CHR_EVENT_CLOSED:
117 s->opened = 0;
118 break;
119 }
120
121 if (!s->chr_event)
122 return;
123 s->chr_event(s->handler_opaque, event);
124 }
125
126 static void qemu_chr_generic_open_bh(void *opaque)
127 {
128 CharDriverState *s = opaque;
129 qemu_chr_event(s, CHR_EVENT_OPENED);
130 qemu_bh_delete(s->bh);
131 s->bh = NULL;
132 }
133
134 void qemu_chr_generic_open(CharDriverState *s)
135 {
136 if (s->bh == NULL) {
137 s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
138 qemu_bh_schedule(s->bh);
139 }
140 }
141
142 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
143 {
144 return s->chr_write(s, buf, len);
145 }
146
147 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
148 {
149 if (!s->chr_ioctl)
150 return -ENOTSUP;
151 return s->chr_ioctl(s, cmd, arg);
152 }
153
154 int qemu_chr_can_read(CharDriverState *s)
155 {
156 if (!s->chr_can_read)
157 return 0;
158 return s->chr_can_read(s->handler_opaque);
159 }
160
161 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
162 {
163 s->chr_read(s->handler_opaque, buf, len);
164 }
165
166 int qemu_chr_get_msgfd(CharDriverState *s)
167 {
168 return s->get_msgfd ? s->get_msgfd(s) : -1;
169 }
170
171 void qemu_chr_accept_input(CharDriverState *s)
172 {
173 if (s->chr_accept_input)
174 s->chr_accept_input(s);
175 }
176
177 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
178 {
179 char buf[READ_BUF_LEN];
180 va_list ap;
181 va_start(ap, fmt);
182 vsnprintf(buf, sizeof(buf), fmt, ap);
183 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
184 va_end(ap);
185 }
186
187 void qemu_chr_send_event(CharDriverState *s, int event)
188 {
189 if (s->chr_send_event)
190 s->chr_send_event(s, event);
191 }
192
193 void qemu_chr_add_handlers(CharDriverState *s,
194 IOCanReadHandler *fd_can_read,
195 IOReadHandler *fd_read,
196 IOEventHandler *fd_event,
197 void *opaque)
198 {
199 s->chr_can_read = fd_can_read;
200 s->chr_read = fd_read;
201 s->chr_event = fd_event;
202 s->handler_opaque = opaque;
203 if (s->chr_update_read_handler)
204 s->chr_update_read_handler(s);
205
206 /* We're connecting to an already opened device, so let's make sure we
207 also get the open event */
208 if (s->opened) {
209 qemu_chr_generic_open(s);
210 }
211 }
212
213 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
214 {
215 return len;
216 }
217
218 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
219 {
220 CharDriverState *chr;
221
222 chr = qemu_mallocz(sizeof(CharDriverState));
223 chr->chr_write = null_chr_write;
224 return chr;
225 }
226
227 /* MUX driver for serial I/O splitting */
228 #define MAX_MUX 4
229 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
230 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
231 typedef struct {
232 IOCanReadHandler *chr_can_read[MAX_MUX];
233 IOReadHandler *chr_read[MAX_MUX];
234 IOEventHandler *chr_event[MAX_MUX];
235 void *ext_opaque[MAX_MUX];
236 CharDriverState *drv;
237 int focus;
238 int mux_cnt;
239 int term_got_escape;
240 int max_size;
241 /* Intermediate input buffer allows to catch escape sequences even if the
242 currently active device is not accepting any input - but only until it
243 is full as well. */
244 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
245 int prod[MAX_MUX];
246 int cons[MAX_MUX];
247 int timestamps;
248 int linestart;
249 int64_t timestamps_start;
250 } MuxDriver;
251
252
253 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
254 {
255 MuxDriver *d = chr->opaque;
256 int ret;
257 if (!d->timestamps) {
258 ret = d->drv->chr_write(d->drv, buf, len);
259 } else {
260 int i;
261
262 ret = 0;
263 for (i = 0; i < len; i++) {
264 if (d->linestart) {
265 char buf1[64];
266 int64_t ti;
267 int secs;
268
269 ti = qemu_get_clock(rt_clock);
270 if (d->timestamps_start == -1)
271 d->timestamps_start = ti;
272 ti -= d->timestamps_start;
273 secs = ti / 1000;
274 snprintf(buf1, sizeof(buf1),
275 "[%02d:%02d:%02d.%03d] ",
276 secs / 3600,
277 (secs / 60) % 60,
278 secs % 60,
279 (int)(ti % 1000));
280 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
281 d->linestart = 0;
282 }
283 ret += d->drv->chr_write(d->drv, buf+i, 1);
284 if (buf[i] == '\n') {
285 d->linestart = 1;
286 }
287 }
288 }
289 return ret;
290 }
291
292 static const char * const mux_help[] = {
293 "% h print this help\n\r",
294 "% x exit emulator\n\r",
295 "% s save disk data back to file (if -snapshot)\n\r",
296 "% t toggle console timestamps\n\r"
297 "% b send break (magic sysrq)\n\r",
298 "% c switch between console and monitor\n\r",
299 "% % sends %\n\r",
300 NULL
301 };
302
303 int term_escape_char = 0x01; /* ctrl-a is used for escape */
304 static void mux_print_help(CharDriverState *chr)
305 {
306 int i, j;
307 char ebuf[15] = "Escape-Char";
308 char cbuf[50] = "\n\r";
309
310 if (term_escape_char > 0 && term_escape_char < 26) {
311 snprintf(cbuf, sizeof(cbuf), "\n\r");
312 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
313 } else {
314 snprintf(cbuf, sizeof(cbuf),
315 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
316 term_escape_char);
317 }
318 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
319 for (i = 0; mux_help[i] != NULL; i++) {
320 for (j=0; mux_help[i][j] != '\0'; j++) {
321 if (mux_help[i][j] == '%')
322 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
323 else
324 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
325 }
326 }
327 }
328
329 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
330 {
331 if (d->chr_event[mux_nr])
332 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
333 }
334
335 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
336 {
337 if (d->term_got_escape) {
338 d->term_got_escape = 0;
339 if (ch == term_escape_char)
340 goto send_char;
341 switch(ch) {
342 case '?':
343 case 'h':
344 mux_print_help(chr);
345 break;
346 case 'x':
347 {
348 const char *term = "QEMU: Terminated\n\r";
349 chr->chr_write(chr,(uint8_t *)term,strlen(term));
350 exit(0);
351 break;
352 }
353 case 's':
354 bdrv_commit_all();
355 break;
356 case 'b':
357 qemu_chr_event(chr, CHR_EVENT_BREAK);
358 break;
359 case 'c':
360 /* Switch to the next registered device */
361 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
362 d->focus++;
363 if (d->focus >= d->mux_cnt)
364 d->focus = 0;
365 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
366 break;
367 case 't':
368 d->timestamps = !d->timestamps;
369 d->timestamps_start = -1;
370 d->linestart = 0;
371 break;
372 }
373 } else if (ch == term_escape_char) {
374 d->term_got_escape = 1;
375 } else {
376 send_char:
377 return 1;
378 }
379 return 0;
380 }
381
382 static void mux_chr_accept_input(CharDriverState *chr)
383 {
384 MuxDriver *d = chr->opaque;
385 int m = d->focus;
386
387 while (d->prod[m] != d->cons[m] &&
388 d->chr_can_read[m] &&
389 d->chr_can_read[m](d->ext_opaque[m])) {
390 d->chr_read[m](d->ext_opaque[m],
391 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
392 }
393 }
394
395 static int mux_chr_can_read(void *opaque)
396 {
397 CharDriverState *chr = opaque;
398 MuxDriver *d = chr->opaque;
399 int m = d->focus;
400
401 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
402 return 1;
403 if (d->chr_can_read[m])
404 return d->chr_can_read[m](d->ext_opaque[m]);
405 return 0;
406 }
407
408 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
409 {
410 CharDriverState *chr = opaque;
411 MuxDriver *d = chr->opaque;
412 int m = d->focus;
413 int i;
414
415 mux_chr_accept_input (opaque);
416
417 for(i = 0; i < size; i++)
418 if (mux_proc_byte(chr, d, buf[i])) {
419 if (d->prod[m] == d->cons[m] &&
420 d->chr_can_read[m] &&
421 d->chr_can_read[m](d->ext_opaque[m]))
422 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
423 else
424 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
425 }
426 }
427
428 static void mux_chr_event(void *opaque, int event)
429 {
430 CharDriverState *chr = opaque;
431 MuxDriver *d = chr->opaque;
432 int i;
433
434 /* Send the event to all registered listeners */
435 for (i = 0; i < d->mux_cnt; i++)
436 mux_chr_send_event(d, i, event);
437 }
438
439 static void mux_chr_update_read_handler(CharDriverState *chr)
440 {
441 MuxDriver *d = chr->opaque;
442
443 if (d->mux_cnt >= MAX_MUX) {
444 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
445 return;
446 }
447 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
448 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
449 d->chr_read[d->mux_cnt] = chr->chr_read;
450 d->chr_event[d->mux_cnt] = chr->chr_event;
451 /* Fix up the real driver with mux routines */
452 if (d->mux_cnt == 0) {
453 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
454 mux_chr_event, chr);
455 }
456 if (d->focus != -1) {
457 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
458 }
459 d->focus = d->mux_cnt;
460 d->mux_cnt++;
461 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
462 }
463
464 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
465 {
466 CharDriverState *chr;
467 MuxDriver *d;
468
469 chr = qemu_mallocz(sizeof(CharDriverState));
470 d = qemu_mallocz(sizeof(MuxDriver));
471
472 chr->opaque = d;
473 d->drv = drv;
474 d->focus = -1;
475 chr->chr_write = mux_chr_write;
476 chr->chr_update_read_handler = mux_chr_update_read_handler;
477 chr->chr_accept_input = mux_chr_accept_input;
478
479 /* Muxes are always open on creation */
480 qemu_chr_generic_open(chr);
481
482 return chr;
483 }
484
485
486 #ifdef _WIN32
487 int send_all(int fd, const void *buf, int len1)
488 {
489 int ret, len;
490
491 len = len1;
492 while (len > 0) {
493 ret = send(fd, buf, len, 0);
494 if (ret < 0) {
495 errno = WSAGetLastError();
496 if (errno != WSAEWOULDBLOCK) {
497 return -1;
498 }
499 } else if (ret == 0) {
500 break;
501 } else {
502 buf += ret;
503 len -= ret;
504 }
505 }
506 return len1 - len;
507 }
508
509 #else
510
511 int send_all(int fd, const void *_buf, int len1)
512 {
513 int ret, len;
514 const uint8_t *buf = _buf;
515
516 len = len1;
517 while (len > 0) {
518 ret = write(fd, buf, len);
519 if (ret < 0) {
520 if (errno != EINTR && errno != EAGAIN)
521 return -1;
522 } else if (ret == 0) {
523 break;
524 } else {
525 buf += ret;
526 len -= ret;
527 }
528 }
529 return len1 - len;
530 }
531 #endif /* !_WIN32 */
532
533 #ifndef _WIN32
534
535 typedef struct {
536 int fd_in, fd_out;
537 int max_size;
538 } FDCharDriver;
539
540 #define STDIO_MAX_CLIENTS 1
541 static int stdio_nb_clients = 0;
542
543 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
544 {
545 FDCharDriver *s = chr->opaque;
546 return send_all(s->fd_out, buf, len);
547 }
548
549 static int fd_chr_read_poll(void *opaque)
550 {
551 CharDriverState *chr = opaque;
552 FDCharDriver *s = chr->opaque;
553
554 s->max_size = qemu_chr_can_read(chr);
555 return s->max_size;
556 }
557
558 static void fd_chr_read(void *opaque)
559 {
560 CharDriverState *chr = opaque;
561 FDCharDriver *s = chr->opaque;
562 int size, len;
563 uint8_t buf[READ_BUF_LEN];
564
565 len = sizeof(buf);
566 if (len > s->max_size)
567 len = s->max_size;
568 if (len == 0)
569 return;
570 size = read(s->fd_in, buf, len);
571 if (size == 0) {
572 /* FD has been closed. Remove it from the active list. */
573 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
574 qemu_chr_event(chr, CHR_EVENT_CLOSED);
575 return;
576 }
577 if (size > 0) {
578 qemu_chr_read(chr, buf, size);
579 }
580 }
581
582 static void fd_chr_update_read_handler(CharDriverState *chr)
583 {
584 FDCharDriver *s = chr->opaque;
585
586 if (s->fd_in >= 0) {
587 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
588 } else {
589 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
590 fd_chr_read, NULL, chr);
591 }
592 }
593 }
594
595 static void fd_chr_close(struct CharDriverState *chr)
596 {
597 FDCharDriver *s = chr->opaque;
598
599 if (s->fd_in >= 0) {
600 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
601 } else {
602 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
603 }
604 }
605
606 qemu_free(s);
607 qemu_chr_event(chr, CHR_EVENT_CLOSED);
608 }
609
610 /* open a character device to a unix fd */
611 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
612 {
613 CharDriverState *chr;
614 FDCharDriver *s;
615
616 chr = qemu_mallocz(sizeof(CharDriverState));
617 s = qemu_mallocz(sizeof(FDCharDriver));
618 s->fd_in = fd_in;
619 s->fd_out = fd_out;
620 chr->opaque = s;
621 chr->chr_write = fd_chr_write;
622 chr->chr_update_read_handler = fd_chr_update_read_handler;
623 chr->chr_close = fd_chr_close;
624
625 qemu_chr_generic_open(chr);
626
627 return chr;
628 }
629
630 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
631 {
632 int fd_out;
633
634 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
635 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
636 if (fd_out < 0)
637 return NULL;
638 return qemu_chr_open_fd(-1, fd_out);
639 }
640
641 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
642 {
643 int fd_in, fd_out;
644 char filename_in[256], filename_out[256];
645 const char *filename = qemu_opt_get(opts, "path");
646
647 if (filename == NULL) {
648 fprintf(stderr, "chardev: pipe: no filename given\n");
649 return NULL;
650 }
651
652 snprintf(filename_in, 256, "%s.in", filename);
653 snprintf(filename_out, 256, "%s.out", filename);
654 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
655 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
656 if (fd_in < 0 || fd_out < 0) {
657 if (fd_in >= 0)
658 close(fd_in);
659 if (fd_out >= 0)
660 close(fd_out);
661 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
662 if (fd_in < 0)
663 return NULL;
664 }
665 return qemu_chr_open_fd(fd_in, fd_out);
666 }
667
668
669 /* for STDIO, we handle the case where several clients use it
670 (nographic mode) */
671
672 #define TERM_FIFO_MAX_SIZE 1
673
674 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
675 static int term_fifo_size;
676
677 static int stdio_read_poll(void *opaque)
678 {
679 CharDriverState *chr = opaque;
680
681 /* try to flush the queue if needed */
682 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
683 qemu_chr_read(chr, term_fifo, 1);
684 term_fifo_size = 0;
685 }
686 /* see if we can absorb more chars */
687 if (term_fifo_size == 0)
688 return 1;
689 else
690 return 0;
691 }
692
693 static void stdio_read(void *opaque)
694 {
695 int size;
696 uint8_t buf[1];
697 CharDriverState *chr = opaque;
698
699 size = read(0, buf, 1);
700 if (size == 0) {
701 /* stdin has been closed. Remove it from the active list. */
702 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
703 qemu_chr_event(chr, CHR_EVENT_CLOSED);
704 return;
705 }
706 if (size > 0) {
707 if (qemu_chr_can_read(chr) > 0) {
708 qemu_chr_read(chr, buf, 1);
709 } else if (term_fifo_size == 0) {
710 term_fifo[term_fifo_size++] = buf[0];
711 }
712 }
713 }
714
715 /* init terminal so that we can grab keys */
716 static struct termios oldtty;
717 static int old_fd0_flags;
718 static int term_atexit_done;
719
720 static void term_exit(void)
721 {
722 tcsetattr (0, TCSANOW, &oldtty);
723 fcntl(0, F_SETFL, old_fd0_flags);
724 }
725
726 static void term_init(QemuOpts *opts)
727 {
728 struct termios tty;
729
730 tcgetattr (0, &tty);
731 oldtty = tty;
732 old_fd0_flags = fcntl(0, F_GETFL);
733
734 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
735 |INLCR|IGNCR|ICRNL|IXON);
736 tty.c_oflag |= OPOST;
737 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
738 /* if graphical mode, we allow Ctrl-C handling */
739 if (!qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC))
740 tty.c_lflag &= ~ISIG;
741 tty.c_cflag &= ~(CSIZE|PARENB);
742 tty.c_cflag |= CS8;
743 tty.c_cc[VMIN] = 1;
744 tty.c_cc[VTIME] = 0;
745
746 tcsetattr (0, TCSANOW, &tty);
747
748 if (!term_atexit_done++)
749 atexit(term_exit);
750
751 fcntl(0, F_SETFL, O_NONBLOCK);
752 }
753
754 static void qemu_chr_close_stdio(struct CharDriverState *chr)
755 {
756 term_exit();
757 stdio_nb_clients--;
758 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
759 fd_chr_close(chr);
760 }
761
762 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
763 {
764 CharDriverState *chr;
765
766 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
767 return NULL;
768 chr = qemu_chr_open_fd(0, 1);
769 chr->chr_close = qemu_chr_close_stdio;
770 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
771 stdio_nb_clients++;
772 term_init(opts);
773
774 return chr;
775 }
776
777 #ifdef __sun__
778 /* Once Solaris has openpty(), this is going to be removed. */
779 static int openpty(int *amaster, int *aslave, char *name,
780 struct termios *termp, struct winsize *winp)
781 {
782 const char *slave;
783 int mfd = -1, sfd = -1;
784
785 *amaster = *aslave = -1;
786
787 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
788 if (mfd < 0)
789 goto err;
790
791 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
792 goto err;
793
794 if ((slave = ptsname(mfd)) == NULL)
795 goto err;
796
797 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
798 goto err;
799
800 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
801 (termp != NULL && tcgetattr(sfd, termp) < 0))
802 goto err;
803
804 if (amaster)
805 *amaster = mfd;
806 if (aslave)
807 *aslave = sfd;
808 if (winp)
809 ioctl(sfd, TIOCSWINSZ, winp);
810
811 return 0;
812
813 err:
814 if (sfd != -1)
815 close(sfd);
816 close(mfd);
817 return -1;
818 }
819
820 static void cfmakeraw (struct termios *termios_p)
821 {
822 termios_p->c_iflag &=
823 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
824 termios_p->c_oflag &= ~OPOST;
825 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
826 termios_p->c_cflag &= ~(CSIZE|PARENB);
827 termios_p->c_cflag |= CS8;
828
829 termios_p->c_cc[VMIN] = 0;
830 termios_p->c_cc[VTIME] = 0;
831 }
832 #endif
833
834 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
835 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
836 || defined(__GLIBC__)
837
838 typedef struct {
839 int fd;
840 int connected;
841 int polling;
842 int read_bytes;
843 QEMUTimer *timer;
844 } PtyCharDriver;
845
846 static void pty_chr_update_read_handler(CharDriverState *chr);
847 static void pty_chr_state(CharDriverState *chr, int connected);
848
849 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
850 {
851 PtyCharDriver *s = chr->opaque;
852
853 if (!s->connected) {
854 /* guest sends data, check for (re-)connect */
855 pty_chr_update_read_handler(chr);
856 return 0;
857 }
858 return send_all(s->fd, buf, len);
859 }
860
861 static int pty_chr_read_poll(void *opaque)
862 {
863 CharDriverState *chr = opaque;
864 PtyCharDriver *s = chr->opaque;
865
866 s->read_bytes = qemu_chr_can_read(chr);
867 return s->read_bytes;
868 }
869
870 static void pty_chr_read(void *opaque)
871 {
872 CharDriverState *chr = opaque;
873 PtyCharDriver *s = chr->opaque;
874 int size, len;
875 uint8_t buf[READ_BUF_LEN];
876
877 len = sizeof(buf);
878 if (len > s->read_bytes)
879 len = s->read_bytes;
880 if (len == 0)
881 return;
882 size = read(s->fd, buf, len);
883 if ((size == -1 && errno == EIO) ||
884 (size == 0)) {
885 pty_chr_state(chr, 0);
886 return;
887 }
888 if (size > 0) {
889 pty_chr_state(chr, 1);
890 qemu_chr_read(chr, buf, size);
891 }
892 }
893
894 static void pty_chr_update_read_handler(CharDriverState *chr)
895 {
896 PtyCharDriver *s = chr->opaque;
897
898 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
899 pty_chr_read, NULL, chr);
900 s->polling = 1;
901 /*
902 * Short timeout here: just need wait long enougth that qemu makes
903 * it through the poll loop once. When reconnected we want a
904 * short timeout so we notice it almost instantly. Otherwise
905 * read() gives us -EIO instantly, making pty_chr_state() reset the
906 * timeout to the normal (much longer) poll interval before the
907 * timer triggers.
908 */
909 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
910 }
911
912 static void pty_chr_state(CharDriverState *chr, int connected)
913 {
914 PtyCharDriver *s = chr->opaque;
915
916 if (!connected) {
917 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
918 s->connected = 0;
919 s->polling = 0;
920 /* (re-)connect poll interval for idle guests: once per second.
921 * We check more frequently in case the guests sends data to
922 * the virtual device linked to our pty. */
923 qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
924 } else {
925 if (!s->connected)
926 qemu_chr_generic_open(chr);
927 s->connected = 1;
928 }
929 }
930
931 static void pty_chr_timer(void *opaque)
932 {
933 struct CharDriverState *chr = opaque;
934 PtyCharDriver *s = chr->opaque;
935
936 if (s->connected)
937 return;
938 if (s->polling) {
939 /* If we arrive here without polling being cleared due
940 * read returning -EIO, then we are (re-)connected */
941 pty_chr_state(chr, 1);
942 return;
943 }
944
945 /* Next poll ... */
946 pty_chr_update_read_handler(chr);
947 }
948
949 static void pty_chr_close(struct CharDriverState *chr)
950 {
951 PtyCharDriver *s = chr->opaque;
952
953 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
954 close(s->fd);
955 qemu_del_timer(s->timer);
956 qemu_free_timer(s->timer);
957 qemu_free(s);
958 qemu_chr_event(chr, CHR_EVENT_CLOSED);
959 }
960
961 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
962 {
963 CharDriverState *chr;
964 PtyCharDriver *s;
965 struct termios tty;
966 int slave_fd, len;
967 #if defined(__OpenBSD__) || defined(__DragonFly__)
968 char pty_name[PATH_MAX];
969 #define q_ptsname(x) pty_name
970 #else
971 char *pty_name = NULL;
972 #define q_ptsname(x) ptsname(x)
973 #endif
974
975 chr = qemu_mallocz(sizeof(CharDriverState));
976 s = qemu_mallocz(sizeof(PtyCharDriver));
977
978 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
979 return NULL;
980 }
981
982 /* Set raw attributes on the pty. */
983 tcgetattr(slave_fd, &tty);
984 cfmakeraw(&tty);
985 tcsetattr(slave_fd, TCSAFLUSH, &tty);
986 close(slave_fd);
987
988 len = strlen(q_ptsname(s->fd)) + 5;
989 chr->filename = qemu_malloc(len);
990 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
991 qemu_opt_set(opts, "path", q_ptsname(s->fd));
992 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
993
994 chr->opaque = s;
995 chr->chr_write = pty_chr_write;
996 chr->chr_update_read_handler = pty_chr_update_read_handler;
997 chr->chr_close = pty_chr_close;
998
999 s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
1000
1001 return chr;
1002 }
1003
1004 static void tty_serial_init(int fd, int speed,
1005 int parity, int data_bits, int stop_bits)
1006 {
1007 struct termios tty;
1008 speed_t spd;
1009
1010 #if 0
1011 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1012 speed, parity, data_bits, stop_bits);
1013 #endif
1014 tcgetattr (fd, &tty);
1015 if (!term_atexit_done) {
1016 oldtty = tty;
1017 }
1018
1019 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1020 speed = speed * 10 / 11;
1021 do {
1022 check_speed(50);
1023 check_speed(75);
1024 check_speed(110);
1025 check_speed(134);
1026 check_speed(150);
1027 check_speed(200);
1028 check_speed(300);
1029 check_speed(600);
1030 check_speed(1200);
1031 check_speed(1800);
1032 check_speed(2400);
1033 check_speed(4800);
1034 check_speed(9600);
1035 check_speed(19200);
1036 check_speed(38400);
1037 /* Non-Posix values follow. They may be unsupported on some systems. */
1038 check_speed(57600);
1039 check_speed(115200);
1040 #ifdef B230400
1041 check_speed(230400);
1042 #endif
1043 #ifdef B460800
1044 check_speed(460800);
1045 #endif
1046 #ifdef B500000
1047 check_speed(500000);
1048 #endif
1049 #ifdef B576000
1050 check_speed(576000);
1051 #endif
1052 #ifdef B921600
1053 check_speed(921600);
1054 #endif
1055 #ifdef B1000000
1056 check_speed(1000000);
1057 #endif
1058 #ifdef B1152000
1059 check_speed(1152000);
1060 #endif
1061 #ifdef B1500000
1062 check_speed(1500000);
1063 #endif
1064 #ifdef B2000000
1065 check_speed(2000000);
1066 #endif
1067 #ifdef B2500000
1068 check_speed(2500000);
1069 #endif
1070 #ifdef B3000000
1071 check_speed(3000000);
1072 #endif
1073 #ifdef B3500000
1074 check_speed(3500000);
1075 #endif
1076 #ifdef B4000000
1077 check_speed(4000000);
1078 #endif
1079 spd = B115200;
1080 } while (0);
1081
1082 cfsetispeed(&tty, spd);
1083 cfsetospeed(&tty, spd);
1084
1085 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1086 |INLCR|IGNCR|ICRNL|IXON);
1087 tty.c_oflag |= OPOST;
1088 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1089 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1090 switch(data_bits) {
1091 default:
1092 case 8:
1093 tty.c_cflag |= CS8;
1094 break;
1095 case 7:
1096 tty.c_cflag |= CS7;
1097 break;
1098 case 6:
1099 tty.c_cflag |= CS6;
1100 break;
1101 case 5:
1102 tty.c_cflag |= CS5;
1103 break;
1104 }
1105 switch(parity) {
1106 default:
1107 case 'N':
1108 break;
1109 case 'E':
1110 tty.c_cflag |= PARENB;
1111 break;
1112 case 'O':
1113 tty.c_cflag |= PARENB | PARODD;
1114 break;
1115 }
1116 if (stop_bits == 2)
1117 tty.c_cflag |= CSTOPB;
1118
1119 tcsetattr (fd, TCSANOW, &tty);
1120 }
1121
1122 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1123 {
1124 FDCharDriver *s = chr->opaque;
1125
1126 switch(cmd) {
1127 case CHR_IOCTL_SERIAL_SET_PARAMS:
1128 {
1129 QEMUSerialSetParams *ssp = arg;
1130 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1131 ssp->data_bits, ssp->stop_bits);
1132 }
1133 break;
1134 case CHR_IOCTL_SERIAL_SET_BREAK:
1135 {
1136 int enable = *(int *)arg;
1137 if (enable)
1138 tcsendbreak(s->fd_in, 1);
1139 }
1140 break;
1141 case CHR_IOCTL_SERIAL_GET_TIOCM:
1142 {
1143 int sarg = 0;
1144 int *targ = (int *)arg;
1145 ioctl(s->fd_in, TIOCMGET, &sarg);
1146 *targ = 0;
1147 if (sarg & TIOCM_CTS)
1148 *targ |= CHR_TIOCM_CTS;
1149 if (sarg & TIOCM_CAR)
1150 *targ |= CHR_TIOCM_CAR;
1151 if (sarg & TIOCM_DSR)
1152 *targ |= CHR_TIOCM_DSR;
1153 if (sarg & TIOCM_RI)
1154 *targ |= CHR_TIOCM_RI;
1155 if (sarg & TIOCM_DTR)
1156 *targ |= CHR_TIOCM_DTR;
1157 if (sarg & TIOCM_RTS)
1158 *targ |= CHR_TIOCM_RTS;
1159 }
1160 break;
1161 case CHR_IOCTL_SERIAL_SET_TIOCM:
1162 {
1163 int sarg = *(int *)arg;
1164 int targ = 0;
1165 ioctl(s->fd_in, TIOCMGET, &targ);
1166 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1167 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1168 if (sarg & CHR_TIOCM_CTS)
1169 targ |= TIOCM_CTS;
1170 if (sarg & CHR_TIOCM_CAR)
1171 targ |= TIOCM_CAR;
1172 if (sarg & CHR_TIOCM_DSR)
1173 targ |= TIOCM_DSR;
1174 if (sarg & CHR_TIOCM_RI)
1175 targ |= TIOCM_RI;
1176 if (sarg & CHR_TIOCM_DTR)
1177 targ |= TIOCM_DTR;
1178 if (sarg & CHR_TIOCM_RTS)
1179 targ |= TIOCM_RTS;
1180 ioctl(s->fd_in, TIOCMSET, &targ);
1181 }
1182 break;
1183 default:
1184 return -ENOTSUP;
1185 }
1186 return 0;
1187 }
1188
1189 static void tty_exit(void)
1190 {
1191 tcsetattr(0, TCSANOW, &oldtty);
1192 }
1193
1194 static void qemu_chr_close_tty(CharDriverState *chr)
1195 {
1196 FDCharDriver *s = chr->opaque;
1197 int fd = -1;
1198
1199 if (s) {
1200 fd = s->fd_in;
1201 }
1202
1203 fd_chr_close(chr);
1204
1205 if (fd >= 0) {
1206 close(fd);
1207 }
1208 }
1209
1210 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1211 {
1212 const char *filename = qemu_opt_get(opts, "path");
1213 CharDriverState *chr;
1214 int fd;
1215
1216 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1217 if (fd < 0) {
1218 return NULL;
1219 }
1220 tty_serial_init(fd, 115200, 'N', 8, 1);
1221 chr = qemu_chr_open_fd(fd, fd);
1222 if (!chr) {
1223 close(fd);
1224 return NULL;
1225 }
1226 chr->chr_ioctl = tty_serial_ioctl;
1227 chr->chr_close = qemu_chr_close_tty;
1228 if (!term_atexit_done++)
1229 atexit(tty_exit);
1230 return chr;
1231 }
1232 #else /* ! __linux__ && ! __sun__ */
1233 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1234 {
1235 return NULL;
1236 }
1237 #endif /* __linux__ || __sun__ */
1238
1239 #if defined(__linux__)
1240 typedef struct {
1241 int fd;
1242 int mode;
1243 } ParallelCharDriver;
1244
1245 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1246 {
1247 if (s->mode != mode) {
1248 int m = mode;
1249 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1250 return 0;
1251 s->mode = mode;
1252 }
1253 return 1;
1254 }
1255
1256 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1257 {
1258 ParallelCharDriver *drv = chr->opaque;
1259 int fd = drv->fd;
1260 uint8_t b;
1261
1262 switch(cmd) {
1263 case CHR_IOCTL_PP_READ_DATA:
1264 if (ioctl(fd, PPRDATA, &b) < 0)
1265 return -ENOTSUP;
1266 *(uint8_t *)arg = b;
1267 break;
1268 case CHR_IOCTL_PP_WRITE_DATA:
1269 b = *(uint8_t *)arg;
1270 if (ioctl(fd, PPWDATA, &b) < 0)
1271 return -ENOTSUP;
1272 break;
1273 case CHR_IOCTL_PP_READ_CONTROL:
1274 if (ioctl(fd, PPRCONTROL, &b) < 0)
1275 return -ENOTSUP;
1276 /* Linux gives only the lowest bits, and no way to know data
1277 direction! For better compatibility set the fixed upper
1278 bits. */
1279 *(uint8_t *)arg = b | 0xc0;
1280 break;
1281 case CHR_IOCTL_PP_WRITE_CONTROL:
1282 b = *(uint8_t *)arg;
1283 if (ioctl(fd, PPWCONTROL, &b) < 0)
1284 return -ENOTSUP;
1285 break;
1286 case CHR_IOCTL_PP_READ_STATUS:
1287 if (ioctl(fd, PPRSTATUS, &b) < 0)
1288 return -ENOTSUP;
1289 *(uint8_t *)arg = b;
1290 break;
1291 case CHR_IOCTL_PP_DATA_DIR:
1292 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1293 return -ENOTSUP;
1294 break;
1295 case CHR_IOCTL_PP_EPP_READ_ADDR:
1296 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1297 struct ParallelIOArg *parg = arg;
1298 int n = read(fd, parg->buffer, parg->count);
1299 if (n != parg->count) {
1300 return -EIO;
1301 }
1302 }
1303 break;
1304 case CHR_IOCTL_PP_EPP_READ:
1305 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1306 struct ParallelIOArg *parg = arg;
1307 int n = read(fd, parg->buffer, parg->count);
1308 if (n != parg->count) {
1309 return -EIO;
1310 }
1311 }
1312 break;
1313 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1314 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1315 struct ParallelIOArg *parg = arg;
1316 int n = write(fd, parg->buffer, parg->count);
1317 if (n != parg->count) {
1318 return -EIO;
1319 }
1320 }
1321 break;
1322 case CHR_IOCTL_PP_EPP_WRITE:
1323 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1324 struct ParallelIOArg *parg = arg;
1325 int n = write(fd, parg->buffer, parg->count);
1326 if (n != parg->count) {
1327 return -EIO;
1328 }
1329 }
1330 break;
1331 default:
1332 return -ENOTSUP;
1333 }
1334 return 0;
1335 }
1336
1337 static void pp_close(CharDriverState *chr)
1338 {
1339 ParallelCharDriver *drv = chr->opaque;
1340 int fd = drv->fd;
1341
1342 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1343 ioctl(fd, PPRELEASE);
1344 close(fd);
1345 qemu_free(drv);
1346 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1347 }
1348
1349 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1350 {
1351 const char *filename = qemu_opt_get(opts, "path");
1352 CharDriverState *chr;
1353 ParallelCharDriver *drv;
1354 int fd;
1355
1356 TFR(fd = open(filename, O_RDWR));
1357 if (fd < 0)
1358 return NULL;
1359
1360 if (ioctl(fd, PPCLAIM) < 0) {
1361 close(fd);
1362 return NULL;
1363 }
1364
1365 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1366 drv->fd = fd;
1367 drv->mode = IEEE1284_MODE_COMPAT;
1368
1369 chr = qemu_mallocz(sizeof(CharDriverState));
1370 chr->chr_write = null_chr_write;
1371 chr->chr_ioctl = pp_ioctl;
1372 chr->chr_close = pp_close;
1373 chr->opaque = drv;
1374
1375 qemu_chr_generic_open(chr);
1376
1377 return chr;
1378 }
1379 #endif /* __linux__ */
1380
1381 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1382 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1383 {
1384 int fd = (int)(long)chr->opaque;
1385 uint8_t b;
1386
1387 switch(cmd) {
1388 case CHR_IOCTL_PP_READ_DATA:
1389 if (ioctl(fd, PPIGDATA, &b) < 0)
1390 return -ENOTSUP;
1391 *(uint8_t *)arg = b;
1392 break;
1393 case CHR_IOCTL_PP_WRITE_DATA:
1394 b = *(uint8_t *)arg;
1395 if (ioctl(fd, PPISDATA, &b) < 0)
1396 return -ENOTSUP;
1397 break;
1398 case CHR_IOCTL_PP_READ_CONTROL:
1399 if (ioctl(fd, PPIGCTRL, &b) < 0)
1400 return -ENOTSUP;
1401 *(uint8_t *)arg = b;
1402 break;
1403 case CHR_IOCTL_PP_WRITE_CONTROL:
1404 b = *(uint8_t *)arg;
1405 if (ioctl(fd, PPISCTRL, &b) < 0)
1406 return -ENOTSUP;
1407 break;
1408 case CHR_IOCTL_PP_READ_STATUS:
1409 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1410 return -ENOTSUP;
1411 *(uint8_t *)arg = b;
1412 break;
1413 default:
1414 return -ENOTSUP;
1415 }
1416 return 0;
1417 }
1418
1419 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1420 {
1421 const char *filename = qemu_opt_get(opts, "path");
1422 CharDriverState *chr;
1423 int fd;
1424
1425 fd = open(filename, O_RDWR);
1426 if (fd < 0)
1427 return NULL;
1428
1429 chr = qemu_mallocz(sizeof(CharDriverState));
1430 chr->opaque = (void *)(long)fd;
1431 chr->chr_write = null_chr_write;
1432 chr->chr_ioctl = pp_ioctl;
1433 return chr;
1434 }
1435 #endif
1436
1437 #else /* _WIN32 */
1438
1439 typedef struct {
1440 int max_size;
1441 HANDLE hcom, hrecv, hsend;
1442 OVERLAPPED orecv, osend;
1443 BOOL fpipe;
1444 DWORD len;
1445 } WinCharState;
1446
1447 #define NSENDBUF 2048
1448 #define NRECVBUF 2048
1449 #define MAXCONNECT 1
1450 #define NTIMEOUT 5000
1451
1452 static int win_chr_poll(void *opaque);
1453 static int win_chr_pipe_poll(void *opaque);
1454
1455 static void win_chr_close(CharDriverState *chr)
1456 {
1457 WinCharState *s = chr->opaque;
1458
1459 if (s->hsend) {
1460 CloseHandle(s->hsend);
1461 s->hsend = NULL;
1462 }
1463 if (s->hrecv) {
1464 CloseHandle(s->hrecv);
1465 s->hrecv = NULL;
1466 }
1467 if (s->hcom) {
1468 CloseHandle(s->hcom);
1469 s->hcom = NULL;
1470 }
1471 if (s->fpipe)
1472 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1473 else
1474 qemu_del_polling_cb(win_chr_poll, chr);
1475
1476 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1477 }
1478
1479 static int win_chr_init(CharDriverState *chr, const char *filename)
1480 {
1481 WinCharState *s = chr->opaque;
1482 COMMCONFIG comcfg;
1483 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1484 COMSTAT comstat;
1485 DWORD size;
1486 DWORD err;
1487
1488 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1489 if (!s->hsend) {
1490 fprintf(stderr, "Failed CreateEvent\n");
1491 goto fail;
1492 }
1493 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1494 if (!s->hrecv) {
1495 fprintf(stderr, "Failed CreateEvent\n");
1496 goto fail;
1497 }
1498
1499 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1500 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1501 if (s->hcom == INVALID_HANDLE_VALUE) {
1502 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1503 s->hcom = NULL;
1504 goto fail;
1505 }
1506
1507 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1508 fprintf(stderr, "Failed SetupComm\n");
1509 goto fail;
1510 }
1511
1512 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1513 size = sizeof(COMMCONFIG);
1514 GetDefaultCommConfig(filename, &comcfg, &size);
1515 comcfg.dcb.DCBlength = sizeof(DCB);
1516 CommConfigDialog(filename, NULL, &comcfg);
1517
1518 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1519 fprintf(stderr, "Failed SetCommState\n");
1520 goto fail;
1521 }
1522
1523 if (!SetCommMask(s->hcom, EV_ERR)) {
1524 fprintf(stderr, "Failed SetCommMask\n");
1525 goto fail;
1526 }
1527
1528 cto.ReadIntervalTimeout = MAXDWORD;
1529 if (!SetCommTimeouts(s->hcom, &cto)) {
1530 fprintf(stderr, "Failed SetCommTimeouts\n");
1531 goto fail;
1532 }
1533
1534 if (!ClearCommError(s->hcom, &err, &comstat)) {
1535 fprintf(stderr, "Failed ClearCommError\n");
1536 goto fail;
1537 }
1538 qemu_add_polling_cb(win_chr_poll, chr);
1539 return 0;
1540
1541 fail:
1542 win_chr_close(chr);
1543 return -1;
1544 }
1545
1546 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1547 {
1548 WinCharState *s = chr->opaque;
1549 DWORD len, ret, size, err;
1550
1551 len = len1;
1552 ZeroMemory(&s->osend, sizeof(s->osend));
1553 s->osend.hEvent = s->hsend;
1554 while (len > 0) {
1555 if (s->hsend)
1556 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1557 else
1558 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1559 if (!ret) {
1560 err = GetLastError();
1561 if (err == ERROR_IO_PENDING) {
1562 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1563 if (ret) {
1564 buf += size;
1565 len -= size;
1566 } else {
1567 break;
1568 }
1569 } else {
1570 break;
1571 }
1572 } else {
1573 buf += size;
1574 len -= size;
1575 }
1576 }
1577 return len1 - len;
1578 }
1579
1580 static int win_chr_read_poll(CharDriverState *chr)
1581 {
1582 WinCharState *s = chr->opaque;
1583
1584 s->max_size = qemu_chr_can_read(chr);
1585 return s->max_size;
1586 }
1587
1588 static void win_chr_readfile(CharDriverState *chr)
1589 {
1590 WinCharState *s = chr->opaque;
1591 int ret, err;
1592 uint8_t buf[READ_BUF_LEN];
1593 DWORD size;
1594
1595 ZeroMemory(&s->orecv, sizeof(s->orecv));
1596 s->orecv.hEvent = s->hrecv;
1597 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1598 if (!ret) {
1599 err = GetLastError();
1600 if (err == ERROR_IO_PENDING) {
1601 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1602 }
1603 }
1604
1605 if (size > 0) {
1606 qemu_chr_read(chr, buf, size);
1607 }
1608 }
1609
1610 static void win_chr_read(CharDriverState *chr)
1611 {
1612 WinCharState *s = chr->opaque;
1613
1614 if (s->len > s->max_size)
1615 s->len = s->max_size;
1616 if (s->len == 0)
1617 return;
1618
1619 win_chr_readfile(chr);
1620 }
1621
1622 static int win_chr_poll(void *opaque)
1623 {
1624 CharDriverState *chr = opaque;
1625 WinCharState *s = chr->opaque;
1626 COMSTAT status;
1627 DWORD comerr;
1628
1629 ClearCommError(s->hcom, &comerr, &status);
1630 if (status.cbInQue > 0) {
1631 s->len = status.cbInQue;
1632 win_chr_read_poll(chr);
1633 win_chr_read(chr);
1634 return 1;
1635 }
1636 return 0;
1637 }
1638
1639 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1640 {
1641 const char *filename = qemu_opt_get(opts, "path");
1642 CharDriverState *chr;
1643 WinCharState *s;
1644
1645 chr = qemu_mallocz(sizeof(CharDriverState));
1646 s = qemu_mallocz(sizeof(WinCharState));
1647 chr->opaque = s;
1648 chr->chr_write = win_chr_write;
1649 chr->chr_close = win_chr_close;
1650
1651 if (win_chr_init(chr, filename) < 0) {
1652 free(s);
1653 free(chr);
1654 return NULL;
1655 }
1656 qemu_chr_generic_open(chr);
1657 return chr;
1658 }
1659
1660 static int win_chr_pipe_poll(void *opaque)
1661 {
1662 CharDriverState *chr = opaque;
1663 WinCharState *s = chr->opaque;
1664 DWORD size;
1665
1666 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1667 if (size > 0) {
1668 s->len = size;
1669 win_chr_read_poll(chr);
1670 win_chr_read(chr);
1671 return 1;
1672 }
1673 return 0;
1674 }
1675
1676 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1677 {
1678 WinCharState *s = chr->opaque;
1679 OVERLAPPED ov;
1680 int ret;
1681 DWORD size;
1682 char openname[256];
1683
1684 s->fpipe = TRUE;
1685
1686 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1687 if (!s->hsend) {
1688 fprintf(stderr, "Failed CreateEvent\n");
1689 goto fail;
1690 }
1691 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1692 if (!s->hrecv) {
1693 fprintf(stderr, "Failed CreateEvent\n");
1694 goto fail;
1695 }
1696
1697 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1698 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1699 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1700 PIPE_WAIT,
1701 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1702 if (s->hcom == INVALID_HANDLE_VALUE) {
1703 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1704 s->hcom = NULL;
1705 goto fail;
1706 }
1707
1708 ZeroMemory(&ov, sizeof(ov));
1709 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1710 ret = ConnectNamedPipe(s->hcom, &ov);
1711 if (ret) {
1712 fprintf(stderr, "Failed ConnectNamedPipe\n");
1713 goto fail;
1714 }
1715
1716 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1717 if (!ret) {
1718 fprintf(stderr, "Failed GetOverlappedResult\n");
1719 if (ov.hEvent) {
1720 CloseHandle(ov.hEvent);
1721 ov.hEvent = NULL;
1722 }
1723 goto fail;
1724 }
1725
1726 if (ov.hEvent) {
1727 CloseHandle(ov.hEvent);
1728 ov.hEvent = NULL;
1729 }
1730 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1731 return 0;
1732
1733 fail:
1734 win_chr_close(chr);
1735 return -1;
1736 }
1737
1738
1739 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1740 {
1741 const char *filename = qemu_opt_get(opts, "path");
1742 CharDriverState *chr;
1743 WinCharState *s;
1744
1745 chr = qemu_mallocz(sizeof(CharDriverState));
1746 s = qemu_mallocz(sizeof(WinCharState));
1747 chr->opaque = s;
1748 chr->chr_write = win_chr_write;
1749 chr->chr_close = win_chr_close;
1750
1751 if (win_chr_pipe_init(chr, filename) < 0) {
1752 free(s);
1753 free(chr);
1754 return NULL;
1755 }
1756 qemu_chr_generic_open(chr);
1757 return chr;
1758 }
1759
1760 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1761 {
1762 CharDriverState *chr;
1763 WinCharState *s;
1764
1765 chr = qemu_mallocz(sizeof(CharDriverState));
1766 s = qemu_mallocz(sizeof(WinCharState));
1767 s->hcom = fd_out;
1768 chr->opaque = s;
1769 chr->chr_write = win_chr_write;
1770 qemu_chr_generic_open(chr);
1771 return chr;
1772 }
1773
1774 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1775 {
1776 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1777 }
1778
1779 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1780 {
1781 const char *file_out = qemu_opt_get(opts, "path");
1782 HANDLE fd_out;
1783
1784 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1785 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1786 if (fd_out == INVALID_HANDLE_VALUE)
1787 return NULL;
1788
1789 return qemu_chr_open_win_file(fd_out);
1790 }
1791 #endif /* !_WIN32 */
1792
1793 /***********************************************************/
1794 /* UDP Net console */
1795
1796 typedef struct {
1797 int fd;
1798 uint8_t buf[READ_BUF_LEN];
1799 int bufcnt;
1800 int bufptr;
1801 int max_size;
1802 } NetCharDriver;
1803
1804 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1805 {
1806 NetCharDriver *s = chr->opaque;
1807
1808 return send(s->fd, (const void *)buf, len, 0);
1809 }
1810
1811 static int udp_chr_read_poll(void *opaque)
1812 {
1813 CharDriverState *chr = opaque;
1814 NetCharDriver *s = chr->opaque;
1815
1816 s->max_size = qemu_chr_can_read(chr);
1817
1818 /* If there were any stray characters in the queue process them
1819 * first
1820 */
1821 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1822 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1823 s->bufptr++;
1824 s->max_size = qemu_chr_can_read(chr);
1825 }
1826 return s->max_size;
1827 }
1828
1829 static void udp_chr_read(void *opaque)
1830 {
1831 CharDriverState *chr = opaque;
1832 NetCharDriver *s = chr->opaque;
1833
1834 if (s->max_size == 0)
1835 return;
1836 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1837 s->bufptr = s->bufcnt;
1838 if (s->bufcnt <= 0)
1839 return;
1840
1841 s->bufptr = 0;
1842 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1843 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1844 s->bufptr++;
1845 s->max_size = qemu_chr_can_read(chr);
1846 }
1847 }
1848
1849 static void udp_chr_update_read_handler(CharDriverState *chr)
1850 {
1851 NetCharDriver *s = chr->opaque;
1852
1853 if (s->fd >= 0) {
1854 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1855 udp_chr_read, NULL, chr);
1856 }
1857 }
1858
1859 static void udp_chr_close(CharDriverState *chr)
1860 {
1861 NetCharDriver *s = chr->opaque;
1862 if (s->fd >= 0) {
1863 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1864 closesocket(s->fd);
1865 }
1866 qemu_free(s);
1867 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1868 }
1869
1870 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1871 {
1872 CharDriverState *chr = NULL;
1873 NetCharDriver *s = NULL;
1874 int fd = -1;
1875
1876 chr = qemu_mallocz(sizeof(CharDriverState));
1877 s = qemu_mallocz(sizeof(NetCharDriver));
1878
1879 fd = inet_dgram_opts(opts);
1880 if (fd < 0) {
1881 fprintf(stderr, "inet_dgram_opts failed\n");
1882 goto return_err;
1883 }
1884
1885 s->fd = fd;
1886 s->bufcnt = 0;
1887 s->bufptr = 0;
1888 chr->opaque = s;
1889 chr->chr_write = udp_chr_write;
1890 chr->chr_update_read_handler = udp_chr_update_read_handler;
1891 chr->chr_close = udp_chr_close;
1892 return chr;
1893
1894 return_err:
1895 if (chr)
1896 free(chr);
1897 if (s)
1898 free(s);
1899 if (fd >= 0)
1900 closesocket(fd);
1901 return NULL;
1902 }
1903
1904 /***********************************************************/
1905 /* TCP Net console */
1906
1907 typedef struct {
1908 int fd, listen_fd;
1909 int connected;
1910 int max_size;
1911 int do_telnetopt;
1912 int do_nodelay;
1913 int is_unix;
1914 int msgfd;
1915 } TCPCharDriver;
1916
1917 static void tcp_chr_accept(void *opaque);
1918
1919 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1920 {
1921 TCPCharDriver *s = chr->opaque;
1922 if (s->connected) {
1923 return send_all(s->fd, buf, len);
1924 } else {
1925 /* XXX: indicate an error ? */
1926 return len;
1927 }
1928 }
1929
1930 static int tcp_chr_read_poll(void *opaque)
1931 {
1932 CharDriverState *chr = opaque;
1933 TCPCharDriver *s = chr->opaque;
1934 if (!s->connected)
1935 return 0;
1936 s->max_size = qemu_chr_can_read(chr);
1937 return s->max_size;
1938 }
1939
1940 #define IAC 255
1941 #define IAC_BREAK 243
1942 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1943 TCPCharDriver *s,
1944 uint8_t *buf, int *size)
1945 {
1946 /* Handle any telnet client's basic IAC options to satisfy char by
1947 * char mode with no echo. All IAC options will be removed from
1948 * the buf and the do_telnetopt variable will be used to track the
1949 * state of the width of the IAC information.
1950 *
1951 * IAC commands come in sets of 3 bytes with the exception of the
1952 * "IAC BREAK" command and the double IAC.
1953 */
1954
1955 int i;
1956 int j = 0;
1957
1958 for (i = 0; i < *size; i++) {
1959 if (s->do_telnetopt > 1) {
1960 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1961 /* Double IAC means send an IAC */
1962 if (j != i)
1963 buf[j] = buf[i];
1964 j++;
1965 s->do_telnetopt = 1;
1966 } else {
1967 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1968 /* Handle IAC break commands by sending a serial break */
1969 qemu_chr_event(chr, CHR_EVENT_BREAK);
1970 s->do_telnetopt++;
1971 }
1972 s->do_telnetopt++;
1973 }
1974 if (s->do_telnetopt >= 4) {
1975 s->do_telnetopt = 1;
1976 }
1977 } else {
1978 if ((unsigned char)buf[i] == IAC) {
1979 s->do_telnetopt = 2;
1980 } else {
1981 if (j != i)
1982 buf[j] = buf[i];
1983 j++;
1984 }
1985 }
1986 }
1987 *size = j;
1988 }
1989
1990 static int tcp_get_msgfd(CharDriverState *chr)
1991 {
1992 TCPCharDriver *s = chr->opaque;
1993 int fd = s->msgfd;
1994 s->msgfd = -1;
1995 return fd;
1996 }
1997
1998 #ifndef _WIN32
1999 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2000 {
2001 TCPCharDriver *s = chr->opaque;
2002 struct cmsghdr *cmsg;
2003
2004 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2005 int fd;
2006
2007 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2008 cmsg->cmsg_level != SOL_SOCKET ||
2009 cmsg->cmsg_type != SCM_RIGHTS)
2010 continue;
2011
2012 fd = *((int *)CMSG_DATA(cmsg));
2013 if (fd < 0)
2014 continue;
2015
2016 if (s->msgfd != -1)
2017 close(s->msgfd);
2018 s->msgfd = fd;
2019 }
2020 }
2021
2022 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2023 {
2024 TCPCharDriver *s = chr->opaque;
2025 struct msghdr msg = { NULL, };
2026 struct iovec iov[1];
2027 union {
2028 struct cmsghdr cmsg;
2029 char control[CMSG_SPACE(sizeof(int))];
2030 } msg_control;
2031 ssize_t ret;
2032
2033 iov[0].iov_base = buf;
2034 iov[0].iov_len = len;
2035
2036 msg.msg_iov = iov;
2037 msg.msg_iovlen = 1;
2038 msg.msg_control = &msg_control;
2039 msg.msg_controllen = sizeof(msg_control);
2040
2041 ret = recvmsg(s->fd, &msg, 0);
2042 if (ret > 0 && s->is_unix)
2043 unix_process_msgfd(chr, &msg);
2044
2045 return ret;
2046 }
2047 #else
2048 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2049 {
2050 TCPCharDriver *s = chr->opaque;
2051 return recv(s->fd, buf, len, 0);
2052 }
2053 #endif
2054
2055 static void tcp_chr_read(void *opaque)
2056 {
2057 CharDriverState *chr = opaque;
2058 TCPCharDriver *s = chr->opaque;
2059 uint8_t buf[READ_BUF_LEN];
2060 int len, size;
2061
2062 if (!s->connected || s->max_size <= 0)
2063 return;
2064 len = sizeof(buf);
2065 if (len > s->max_size)
2066 len = s->max_size;
2067 size = tcp_chr_recv(chr, (void *)buf, len);
2068 if (size == 0) {
2069 /* connection closed */
2070 s->connected = 0;
2071 if (s->listen_fd >= 0) {
2072 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2073 }
2074 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2075 closesocket(s->fd);
2076 s->fd = -1;
2077 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2078 } else if (size > 0) {
2079 if (s->do_telnetopt)
2080 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2081 if (size > 0)
2082 qemu_chr_read(chr, buf, size);
2083 }
2084 }
2085
2086 #ifndef _WIN32
2087 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2088 {
2089 return qemu_chr_open_fd(eventfd, eventfd);
2090 }
2091 #endif
2092
2093 static void tcp_chr_connect(void *opaque)
2094 {
2095 CharDriverState *chr = opaque;
2096 TCPCharDriver *s = chr->opaque;
2097
2098 s->connected = 1;
2099 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2100 tcp_chr_read, NULL, chr);
2101 qemu_chr_generic_open(chr);
2102 }
2103
2104 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2105 static void tcp_chr_telnet_init(int fd)
2106 {
2107 char buf[3];
2108 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2109 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2110 send(fd, (char *)buf, 3, 0);
2111 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2112 send(fd, (char *)buf, 3, 0);
2113 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2114 send(fd, (char *)buf, 3, 0);
2115 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2116 send(fd, (char *)buf, 3, 0);
2117 }
2118
2119 static void socket_set_nodelay(int fd)
2120 {
2121 int val = 1;
2122 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2123 }
2124
2125 static void tcp_chr_accept(void *opaque)
2126 {
2127 CharDriverState *chr = opaque;
2128 TCPCharDriver *s = chr->opaque;
2129 struct sockaddr_in saddr;
2130 #ifndef _WIN32
2131 struct sockaddr_un uaddr;
2132 #endif
2133 struct sockaddr *addr;
2134 socklen_t len;
2135 int fd;
2136
2137 for(;;) {
2138 #ifndef _WIN32
2139 if (s->is_unix) {
2140 len = sizeof(uaddr);
2141 addr = (struct sockaddr *)&uaddr;
2142 } else
2143 #endif
2144 {
2145 len = sizeof(saddr);
2146 addr = (struct sockaddr *)&saddr;
2147 }
2148 fd = qemu_accept(s->listen_fd, addr, &len);
2149 if (fd < 0 && errno != EINTR) {
2150 return;
2151 } else if (fd >= 0) {
2152 if (s->do_telnetopt)
2153 tcp_chr_telnet_init(fd);
2154 break;
2155 }
2156 }
2157 socket_set_nonblock(fd);
2158 if (s->do_nodelay)
2159 socket_set_nodelay(fd);
2160 s->fd = fd;
2161 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2162 tcp_chr_connect(chr);
2163 }
2164
2165 static void tcp_chr_close(CharDriverState *chr)
2166 {
2167 TCPCharDriver *s = chr->opaque;
2168 if (s->fd >= 0) {
2169 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2170 closesocket(s->fd);
2171 }
2172 if (s->listen_fd >= 0) {
2173 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2174 closesocket(s->listen_fd);
2175 }
2176 qemu_free(s);
2177 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2178 }
2179
2180 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2181 {
2182 CharDriverState *chr = NULL;
2183 TCPCharDriver *s = NULL;
2184 int fd = -1;
2185 int is_listen;
2186 int is_waitconnect;
2187 int do_nodelay;
2188 int is_unix;
2189 int is_telnet;
2190
2191 is_listen = qemu_opt_get_bool(opts, "server", 0);
2192 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2193 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2194 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2195 is_unix = qemu_opt_get(opts, "path") != NULL;
2196 if (!is_listen)
2197 is_waitconnect = 0;
2198
2199 chr = qemu_mallocz(sizeof(CharDriverState));
2200 s = qemu_mallocz(sizeof(TCPCharDriver));
2201
2202 if (is_unix) {
2203 if (is_listen) {
2204 fd = unix_listen_opts(opts);
2205 } else {
2206 fd = unix_connect_opts(opts);
2207 }
2208 } else {
2209 if (is_listen) {
2210 fd = inet_listen_opts(opts, 0);
2211 } else {
2212 fd = inet_connect_opts(opts);
2213 }
2214 }
2215 if (fd < 0)
2216 goto fail;
2217
2218 if (!is_waitconnect)
2219 socket_set_nonblock(fd);
2220
2221 s->connected = 0;
2222 s->fd = -1;
2223 s->listen_fd = -1;
2224 s->msgfd = -1;
2225 s->is_unix = is_unix;
2226 s->do_nodelay = do_nodelay && !is_unix;
2227
2228 chr->opaque = s;
2229 chr->chr_write = tcp_chr_write;
2230 chr->chr_close = tcp_chr_close;
2231 chr->get_msgfd = tcp_get_msgfd;
2232
2233 if (is_listen) {
2234 s->listen_fd = fd;
2235 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2236 if (is_telnet)
2237 s->do_telnetopt = 1;
2238
2239 } else {
2240 s->connected = 1;
2241 s->fd = fd;
2242 socket_set_nodelay(fd);
2243 tcp_chr_connect(chr);
2244 }
2245
2246 /* for "info chardev" monitor command */
2247 chr->filename = qemu_malloc(256);
2248 if (is_unix) {
2249 snprintf(chr->filename, 256, "unix:%s%s",
2250 qemu_opt_get(opts, "path"),
2251 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2252 } else if (is_telnet) {
2253 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2254 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2255 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2256 } else {
2257 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2258 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2259 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2260 }
2261
2262 if (is_listen && is_waitconnect) {
2263 printf("QEMU waiting for connection on: %s\n",
2264 chr->filename);
2265 tcp_chr_accept(chr);
2266 socket_set_nonblock(s->listen_fd);
2267 }
2268 return chr;
2269
2270 fail:
2271 if (fd >= 0)
2272 closesocket(fd);
2273 qemu_free(s);
2274 qemu_free(chr);
2275 return NULL;
2276 }
2277
2278 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2279 {
2280 char host[65], port[33], width[8], height[8];
2281 int pos;
2282 const char *p;
2283 QemuOpts *opts;
2284
2285 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2286 if (NULL == opts)
2287 return NULL;
2288
2289 if (strstart(filename, "mon:", &p)) {
2290 filename = p;
2291 qemu_opt_set(opts, "mux", "on");
2292 }
2293
2294 if (strcmp(filename, "null") == 0 ||
2295 strcmp(filename, "pty") == 0 ||
2296 strcmp(filename, "msmouse") == 0 ||
2297 strcmp(filename, "braille") == 0 ||
2298 strcmp(filename, "stdio") == 0) {
2299 qemu_opt_set(opts, "backend", filename);
2300 return opts;
2301 }
2302 if (strstart(filename, "vc", &p)) {
2303 qemu_opt_set(opts, "backend", "vc");
2304 if (*p == ':') {
2305 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2306 /* pixels */
2307 qemu_opt_set(opts, "width", width);
2308 qemu_opt_set(opts, "height", height);
2309 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2310 /* chars */
2311 qemu_opt_set(opts, "cols", width);
2312 qemu_opt_set(opts, "rows", height);
2313 } else {
2314 goto fail;
2315 }
2316 }
2317 return opts;
2318 }
2319 if (strcmp(filename, "con:") == 0) {
2320 qemu_opt_set(opts, "backend", "console");
2321 return opts;
2322 }
2323 if (strstart(filename, "COM", NULL)) {
2324 qemu_opt_set(opts, "backend", "serial");
2325 qemu_opt_set(opts, "path", filename);
2326 return opts;
2327 }
2328 if (strstart(filename, "file:", &p)) {
2329 qemu_opt_set(opts, "backend", "file");
2330 qemu_opt_set(opts, "path", p);
2331 return opts;
2332 }
2333 if (strstart(filename, "pipe:", &p)) {
2334 qemu_opt_set(opts, "backend", "pipe");
2335 qemu_opt_set(opts, "path", p);
2336 return opts;
2337 }
2338 if (strstart(filename, "tcp:", &p) ||
2339 strstart(filename, "telnet:", &p)) {
2340 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2341 host[0] = 0;
2342 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2343 goto fail;
2344 }
2345 qemu_opt_set(opts, "backend", "socket");
2346 qemu_opt_set(opts, "host", host);
2347 qemu_opt_set(opts, "port", port);
2348 if (p[pos] == ',') {
2349 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2350 goto fail;
2351 }
2352 if (strstart(filename, "telnet:", &p))
2353 qemu_opt_set(opts, "telnet", "on");
2354 return opts;
2355 }
2356 if (strstart(filename, "udp:", &p)) {
2357 qemu_opt_set(opts, "backend", "udp");
2358 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2359 host[0] = 0;
2360 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2361 goto fail;
2362 }
2363 }
2364 qemu_opt_set(opts, "host", host);
2365 qemu_opt_set(opts, "port", port);
2366 if (p[pos] == '@') {
2367 p += pos + 1;
2368 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2369 host[0] = 0;
2370 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2371 goto fail;
2372 }
2373 }
2374 qemu_opt_set(opts, "localaddr", host);
2375 qemu_opt_set(opts, "localport", port);
2376 }
2377 return opts;
2378 }
2379 if (strstart(filename, "unix:", &p)) {
2380 qemu_opt_set(opts, "backend", "socket");
2381 if (qemu_opts_do_parse(opts, p, "path") != 0)
2382 goto fail;
2383 return opts;
2384 }
2385 if (strstart(filename, "/dev/parport", NULL) ||
2386 strstart(filename, "/dev/ppi", NULL)) {
2387 qemu_opt_set(opts, "backend", "parport");
2388 qemu_opt_set(opts, "path", filename);
2389 return opts;
2390 }
2391 if (strstart(filename, "/dev/", NULL)) {
2392 qemu_opt_set(opts, "backend", "tty");
2393 qemu_opt_set(opts, "path", filename);
2394 return opts;
2395 }
2396
2397 fail:
2398 qemu_opts_del(opts);
2399 return NULL;
2400 }
2401
2402 static const struct {
2403 const char *name;
2404 CharDriverState *(*open)(QemuOpts *opts);
2405 } backend_table[] = {
2406 { .name = "null", .open = qemu_chr_open_null },
2407 { .name = "socket", .open = qemu_chr_open_socket },
2408 { .name = "udp", .open = qemu_chr_open_udp },
2409 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2410 { .name = "vc", .open = text_console_init },
2411 #ifdef _WIN32
2412 { .name = "file", .open = qemu_chr_open_win_file_out },
2413 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2414 { .name = "console", .open = qemu_chr_open_win_con },
2415 { .name = "serial", .open = qemu_chr_open_win },
2416 #else
2417 { .name = "file", .open = qemu_chr_open_file_out },
2418 { .name = "pipe", .open = qemu_chr_open_pipe },
2419 { .name = "pty", .open = qemu_chr_open_pty },
2420 { .name = "stdio", .open = qemu_chr_open_stdio },
2421 #endif
2422 #ifdef CONFIG_BRLAPI
2423 { .name = "braille", .open = chr_baum_init },
2424 #endif
2425 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2426 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2427 || defined(__FreeBSD_kernel__)
2428 { .name = "tty", .open = qemu_chr_open_tty },
2429 #endif
2430 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2431 || defined(__FreeBSD_kernel__)
2432 { .name = "parport", .open = qemu_chr_open_pp },
2433 #endif
2434 };
2435
2436 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2437 void (*init)(struct CharDriverState *s))
2438 {
2439 CharDriverState *chr;
2440 int i;
2441
2442 if (qemu_opts_id(opts) == NULL) {
2443 fprintf(stderr, "chardev: no id specified\n");
2444 return NULL;
2445 }
2446
2447 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2448 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2449 break;
2450 }
2451 if (i == ARRAY_SIZE(backend_table)) {
2452 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2453 qemu_opt_get(opts, "backend"));
2454 return NULL;
2455 }
2456
2457 chr = backend_table[i].open(opts);
2458 if (!chr) {
2459 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2460 qemu_opt_get(opts, "backend"));
2461 return NULL;
2462 }
2463
2464 if (!chr->filename)
2465 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2466 chr->init = init;
2467 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2468
2469 if (qemu_opt_get_bool(opts, "mux", 0)) {
2470 CharDriverState *base = chr;
2471 int len = strlen(qemu_opts_id(opts)) + 6;
2472 base->label = qemu_malloc(len);
2473 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2474 chr = qemu_chr_open_mux(base);
2475 chr->filename = base->filename;
2476 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2477 }
2478 chr->label = qemu_strdup(qemu_opts_id(opts));
2479 return chr;
2480 }
2481
2482 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2483 {
2484 const char *p;
2485 CharDriverState *chr;
2486 QemuOpts *opts;
2487
2488 if (strstart(filename, "chardev:", &p)) {
2489 return qemu_chr_find(p);
2490 }
2491
2492 opts = qemu_chr_parse_compat(label, filename);
2493 if (!opts)
2494 return NULL;
2495
2496 chr = qemu_chr_open_opts(opts, init);
2497 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2498 monitor_init(chr, MONITOR_USE_READLINE);
2499 }
2500 return chr;
2501 }
2502
2503 void qemu_chr_close(CharDriverState *chr)
2504 {
2505 QTAILQ_REMOVE(&chardevs, chr, next);
2506 if (chr->chr_close)
2507 chr->chr_close(chr);
2508 qemu_free(chr->filename);
2509 qemu_free(chr->label);
2510 qemu_free(chr);
2511 }
2512
2513 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2514 {
2515 QDict *chr_dict;
2516 Monitor *mon = opaque;
2517
2518 chr_dict = qobject_to_qdict(obj);
2519 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2520 qdict_get_str(chr_dict, "filename"));
2521 }
2522
2523 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2524 {
2525 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2526 }
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 }
various patches