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vhost: fix dirty page handling
[qemu/ar7.git] / qemu-char.c
blob03858d4ef7aaef0d88ffaa4fb7274db2e8ec6bcc
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 #include "ui/qemu-spice.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 /* Keep track if the char device is open */
113 switch (event) {
114 case CHR_EVENT_OPENED:
115 s->opened = 1;
116 break;
117 case CHR_EVENT_CLOSED:
118 s->opened = 0;
119 break;
120 }
121
122 if (!s->chr_event)
123 return;
124 s->chr_event(s->handler_opaque, event);
125 }
126
127 static void qemu_chr_generic_open_bh(void *opaque)
128 {
129 CharDriverState *s = opaque;
130 qemu_chr_event(s, CHR_EVENT_OPENED);
131 qemu_bh_delete(s->bh);
132 s->bh = NULL;
133 }
134
135 void qemu_chr_generic_open(CharDriverState *s)
136 {
137 if (s->bh == NULL) {
138 s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
139 qemu_bh_schedule(s->bh);
140 }
141 }
142
143 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
144 {
145 return s->chr_write(s, buf, len);
146 }
147
148 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
149 {
150 if (!s->chr_ioctl)
151 return -ENOTSUP;
152 return s->chr_ioctl(s, cmd, arg);
153 }
154
155 int qemu_chr_can_read(CharDriverState *s)
156 {
157 if (!s->chr_can_read)
158 return 0;
159 return s->chr_can_read(s->handler_opaque);
160 }
161
162 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
163 {
164 s->chr_read(s->handler_opaque, buf, len);
165 }
166
167 int qemu_chr_get_msgfd(CharDriverState *s)
168 {
169 return s->get_msgfd ? s->get_msgfd(s) : -1;
170 }
171
172 void qemu_chr_accept_input(CharDriverState *s)
173 {
174 if (s->chr_accept_input)
175 s->chr_accept_input(s);
176 }
177
178 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
179 {
180 char buf[READ_BUF_LEN];
181 va_list ap;
182 va_start(ap, fmt);
183 vsnprintf(buf, sizeof(buf), fmt, ap);
184 qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
185 va_end(ap);
186 }
187
188 void qemu_chr_send_event(CharDriverState *s, int event)
189 {
190 if (s->chr_send_event)
191 s->chr_send_event(s, event);
192 }
193
194 void qemu_chr_add_handlers(CharDriverState *s,
195 IOCanReadHandler *fd_can_read,
196 IOReadHandler *fd_read,
197 IOEventHandler *fd_event,
198 void *opaque)
199 {
200 if (!opaque) {
201 /* chr driver being released. */
202 s->assigned = 0;
203 }
204 s->chr_can_read = fd_can_read;
205 s->chr_read = fd_read;
206 s->chr_event = fd_event;
207 s->handler_opaque = opaque;
208 if (s->chr_update_read_handler)
209 s->chr_update_read_handler(s);
210
211 /* We're connecting to an already opened device, so let's make sure we
212 also get the open event */
213 if (s->opened) {
214 qemu_chr_generic_open(s);
215 }
216 }
217
218 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
219 {
220 return len;
221 }
222
223 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
224 {
225 CharDriverState *chr;
226
227 chr = qemu_mallocz(sizeof(CharDriverState));
228 chr->chr_write = null_chr_write;
229 return chr;
230 }
231
232 /* MUX driver for serial I/O splitting */
233 #define MAX_MUX 4
234 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
235 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
236 typedef struct {
237 IOCanReadHandler *chr_can_read[MAX_MUX];
238 IOReadHandler *chr_read[MAX_MUX];
239 IOEventHandler *chr_event[MAX_MUX];
240 void *ext_opaque[MAX_MUX];
241 CharDriverState *drv;
242 int focus;
243 int mux_cnt;
244 int term_got_escape;
245 int max_size;
246 /* Intermediate input buffer allows to catch escape sequences even if the
247 currently active device is not accepting any input - but only until it
248 is full as well. */
249 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
250 int prod[MAX_MUX];
251 int cons[MAX_MUX];
252 int timestamps;
253 int linestart;
254 int64_t timestamps_start;
255 } MuxDriver;
256
257
258 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
259 {
260 MuxDriver *d = chr->opaque;
261 int ret;
262 if (!d->timestamps) {
263 ret = d->drv->chr_write(d->drv, buf, len);
264 } else {
265 int i;
266
267 ret = 0;
268 for (i = 0; i < len; i++) {
269 if (d->linestart) {
270 char buf1[64];
271 int64_t ti;
272 int secs;
273
274 ti = qemu_get_clock_ms(rt_clock);
275 if (d->timestamps_start == -1)
276 d->timestamps_start = ti;
277 ti -= d->timestamps_start;
278 secs = ti / 1000;
279 snprintf(buf1, sizeof(buf1),
280 "[%02d:%02d:%02d.%03d] ",
281 secs / 3600,
282 (secs / 60) % 60,
283 secs % 60,
284 (int)(ti % 1000));
285 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
286 d->linestart = 0;
287 }
288 ret += d->drv->chr_write(d->drv, buf+i, 1);
289 if (buf[i] == '\n') {
290 d->linestart = 1;
291 }
292 }
293 }
294 return ret;
295 }
296
297 static const char * const mux_help[] = {
298 "% h print this help\n\r",
299 "% x exit emulator\n\r",
300 "% s save disk data back to file (if -snapshot)\n\r",
301 "% t toggle console timestamps\n\r"
302 "% b send break (magic sysrq)\n\r",
303 "% c switch between console and monitor\n\r",
304 "% % sends %\n\r",
305 NULL
306 };
307
308 int term_escape_char = 0x01; /* ctrl-a is used for escape */
309 static void mux_print_help(CharDriverState *chr)
310 {
311 int i, j;
312 char ebuf[15] = "Escape-Char";
313 char cbuf[50] = "\n\r";
314
315 if (term_escape_char > 0 && term_escape_char < 26) {
316 snprintf(cbuf, sizeof(cbuf), "\n\r");
317 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
318 } else {
319 snprintf(cbuf, sizeof(cbuf),
320 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
321 term_escape_char);
322 }
323 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
324 for (i = 0; mux_help[i] != NULL; i++) {
325 for (j=0; mux_help[i][j] != '\0'; j++) {
326 if (mux_help[i][j] == '%')
327 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
328 else
329 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
330 }
331 }
332 }
333
334 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
335 {
336 if (d->chr_event[mux_nr])
337 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
338 }
339
340 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
341 {
342 if (d->term_got_escape) {
343 d->term_got_escape = 0;
344 if (ch == term_escape_char)
345 goto send_char;
346 switch(ch) {
347 case '?':
348 case 'h':
349 mux_print_help(chr);
350 break;
351 case 'x':
352 {
353 const char *term = "QEMU: Terminated\n\r";
354 chr->chr_write(chr,(uint8_t *)term,strlen(term));
355 exit(0);
356 break;
357 }
358 case 's':
359 bdrv_commit_all();
360 break;
361 case 'b':
362 qemu_chr_event(chr, CHR_EVENT_BREAK);
363 break;
364 case 'c':
365 /* Switch to the next registered device */
366 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
367 d->focus++;
368 if (d->focus >= d->mux_cnt)
369 d->focus = 0;
370 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
371 break;
372 case 't':
373 d->timestamps = !d->timestamps;
374 d->timestamps_start = -1;
375 d->linestart = 0;
376 break;
377 }
378 } else if (ch == term_escape_char) {
379 d->term_got_escape = 1;
380 } else {
381 send_char:
382 return 1;
383 }
384 return 0;
385 }
386
387 static void mux_chr_accept_input(CharDriverState *chr)
388 {
389 MuxDriver *d = chr->opaque;
390 int m = d->focus;
391
392 while (d->prod[m] != d->cons[m] &&
393 d->chr_can_read[m] &&
394 d->chr_can_read[m](d->ext_opaque[m])) {
395 d->chr_read[m](d->ext_opaque[m],
396 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
397 }
398 }
399
400 static int mux_chr_can_read(void *opaque)
401 {
402 CharDriverState *chr = opaque;
403 MuxDriver *d = chr->opaque;
404 int m = d->focus;
405
406 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
407 return 1;
408 if (d->chr_can_read[m])
409 return d->chr_can_read[m](d->ext_opaque[m]);
410 return 0;
411 }
412
413 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
414 {
415 CharDriverState *chr = opaque;
416 MuxDriver *d = chr->opaque;
417 int m = d->focus;
418 int i;
419
420 mux_chr_accept_input (opaque);
421
422 for(i = 0; i < size; i++)
423 if (mux_proc_byte(chr, d, buf[i])) {
424 if (d->prod[m] == d->cons[m] &&
425 d->chr_can_read[m] &&
426 d->chr_can_read[m](d->ext_opaque[m]))
427 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
428 else
429 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
430 }
431 }
432
433 static void mux_chr_event(void *opaque, int event)
434 {
435 CharDriverState *chr = opaque;
436 MuxDriver *d = chr->opaque;
437 int i;
438
439 /* Send the event to all registered listeners */
440 for (i = 0; i < d->mux_cnt; i++)
441 mux_chr_send_event(d, i, event);
442 }
443
444 static void mux_chr_update_read_handler(CharDriverState *chr)
445 {
446 MuxDriver *d = chr->opaque;
447
448 if (d->mux_cnt >= MAX_MUX) {
449 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
450 return;
451 }
452 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
453 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
454 d->chr_read[d->mux_cnt] = chr->chr_read;
455 d->chr_event[d->mux_cnt] = chr->chr_event;
456 /* Fix up the real driver with mux routines */
457 if (d->mux_cnt == 0) {
458 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
459 mux_chr_event, chr);
460 }
461 if (d->focus != -1) {
462 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
463 }
464 d->focus = d->mux_cnt;
465 d->mux_cnt++;
466 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
467 }
468
469 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
470 {
471 CharDriverState *chr;
472 MuxDriver *d;
473
474 chr = qemu_mallocz(sizeof(CharDriverState));
475 d = qemu_mallocz(sizeof(MuxDriver));
476
477 chr->opaque = d;
478 d->drv = drv;
479 d->focus = -1;
480 chr->chr_write = mux_chr_write;
481 chr->chr_update_read_handler = mux_chr_update_read_handler;
482 chr->chr_accept_input = mux_chr_accept_input;
483
484 /* Muxes are always open on creation */
485 qemu_chr_generic_open(chr);
486
487 return chr;
488 }
489
490
491 #ifdef _WIN32
492 int send_all(int fd, const void *buf, int len1)
493 {
494 int ret, len;
495
496 len = len1;
497 while (len > 0) {
498 ret = send(fd, buf, len, 0);
499 if (ret < 0) {
500 errno = WSAGetLastError();
501 if (errno != WSAEWOULDBLOCK) {
502 return -1;
503 }
504 } else if (ret == 0) {
505 break;
506 } else {
507 buf += ret;
508 len -= ret;
509 }
510 }
511 return len1 - len;
512 }
513
514 #else
515
516 int send_all(int fd, const void *_buf, int len1)
517 {
518 int ret, len;
519 const uint8_t *buf = _buf;
520
521 len = len1;
522 while (len > 0) {
523 ret = write(fd, buf, len);
524 if (ret < 0) {
525 if (errno != EINTR && errno != EAGAIN)
526 return -1;
527 } else if (ret == 0) {
528 break;
529 } else {
530 buf += ret;
531 len -= ret;
532 }
533 }
534 return len1 - len;
535 }
536 #endif /* !_WIN32 */
537
538 #ifndef _WIN32
539
540 typedef struct {
541 int fd_in, fd_out;
542 int max_size;
543 } FDCharDriver;
544
545 #define STDIO_MAX_CLIENTS 1
546 static int stdio_nb_clients = 0;
547
548 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
549 {
550 FDCharDriver *s = chr->opaque;
551 return send_all(s->fd_out, buf, len);
552 }
553
554 static int fd_chr_read_poll(void *opaque)
555 {
556 CharDriverState *chr = opaque;
557 FDCharDriver *s = chr->opaque;
558
559 s->max_size = qemu_chr_can_read(chr);
560 return s->max_size;
561 }
562
563 static void fd_chr_read(void *opaque)
564 {
565 CharDriverState *chr = opaque;
566 FDCharDriver *s = chr->opaque;
567 int size, len;
568 uint8_t buf[READ_BUF_LEN];
569
570 len = sizeof(buf);
571 if (len > s->max_size)
572 len = s->max_size;
573 if (len == 0)
574 return;
575 size = read(s->fd_in, buf, len);
576 if (size == 0) {
577 /* FD has been closed. Remove it from the active list. */
578 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
579 qemu_chr_event(chr, CHR_EVENT_CLOSED);
580 return;
581 }
582 if (size > 0) {
583 qemu_chr_read(chr, buf, size);
584 }
585 }
586
587 static void fd_chr_update_read_handler(CharDriverState *chr)
588 {
589 FDCharDriver *s = chr->opaque;
590
591 if (s->fd_in >= 0) {
592 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
593 } else {
594 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
595 fd_chr_read, NULL, chr);
596 }
597 }
598 }
599
600 static void fd_chr_close(struct CharDriverState *chr)
601 {
602 FDCharDriver *s = chr->opaque;
603
604 if (s->fd_in >= 0) {
605 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
606 } else {
607 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
608 }
609 }
610
611 qemu_free(s);
612 qemu_chr_event(chr, CHR_EVENT_CLOSED);
613 }
614
615 /* open a character device to a unix fd */
616 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
617 {
618 CharDriverState *chr;
619 FDCharDriver *s;
620
621 chr = qemu_mallocz(sizeof(CharDriverState));
622 s = qemu_mallocz(sizeof(FDCharDriver));
623 s->fd_in = fd_in;
624 s->fd_out = fd_out;
625 chr->opaque = s;
626 chr->chr_write = fd_chr_write;
627 chr->chr_update_read_handler = fd_chr_update_read_handler;
628 chr->chr_close = fd_chr_close;
629
630 qemu_chr_generic_open(chr);
631
632 return chr;
633 }
634
635 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
636 {
637 int fd_out;
638
639 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
640 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
641 if (fd_out < 0)
642 return NULL;
643 return qemu_chr_open_fd(-1, fd_out);
644 }
645
646 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
647 {
648 int fd_in, fd_out;
649 char filename_in[256], filename_out[256];
650 const char *filename = qemu_opt_get(opts, "path");
651
652 if (filename == NULL) {
653 fprintf(stderr, "chardev: pipe: no filename given\n");
654 return NULL;
655 }
656
657 snprintf(filename_in, 256, "%s.in", filename);
658 snprintf(filename_out, 256, "%s.out", filename);
659 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
660 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
661 if (fd_in < 0 || fd_out < 0) {
662 if (fd_in >= 0)
663 close(fd_in);
664 if (fd_out >= 0)
665 close(fd_out);
666 TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
667 if (fd_in < 0)
668 return NULL;
669 }
670 return qemu_chr_open_fd(fd_in, fd_out);
671 }
672
673
674 /* for STDIO, we handle the case where several clients use it
675 (nographic mode) */
676
677 #define TERM_FIFO_MAX_SIZE 1
678
679 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
680 static int term_fifo_size;
681
682 static int stdio_read_poll(void *opaque)
683 {
684 CharDriverState *chr = opaque;
685
686 /* try to flush the queue if needed */
687 if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
688 qemu_chr_read(chr, term_fifo, 1);
689 term_fifo_size = 0;
690 }
691 /* see if we can absorb more chars */
692 if (term_fifo_size == 0)
693 return 1;
694 else
695 return 0;
696 }
697
698 static void stdio_read(void *opaque)
699 {
700 int size;
701 uint8_t buf[1];
702 CharDriverState *chr = opaque;
703
704 size = read(0, buf, 1);
705 if (size == 0) {
706 /* stdin has been closed. Remove it from the active list. */
707 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
708 qemu_chr_event(chr, CHR_EVENT_CLOSED);
709 return;
710 }
711 if (size > 0) {
712 if (qemu_chr_can_read(chr) > 0) {
713 qemu_chr_read(chr, buf, 1);
714 } else if (term_fifo_size == 0) {
715 term_fifo[term_fifo_size++] = buf[0];
716 }
717 }
718 }
719
720 /* init terminal so that we can grab keys */
721 static struct termios oldtty;
722 static int old_fd0_flags;
723 static bool stdio_allow_signal;
724
725 static void term_exit(void)
726 {
727 tcsetattr (0, TCSANOW, &oldtty);
728 fcntl(0, F_SETFL, old_fd0_flags);
729 }
730
731 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
732 {
733 struct termios tty;
734
735 tty = oldtty;
736 if (!echo) {
737 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
738 |INLCR|IGNCR|ICRNL|IXON);
739 tty.c_oflag |= OPOST;
740 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
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 /* if graphical mode, we allow Ctrl-C handling */
747 if (!stdio_allow_signal)
748 tty.c_lflag &= ~ISIG;
749
750 tcsetattr (0, TCSANOW, &tty);
751 }
752
753 static void qemu_chr_close_stdio(struct CharDriverState *chr)
754 {
755 term_exit();
756 stdio_nb_clients--;
757 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
758 fd_chr_close(chr);
759 }
760
761 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
762 {
763 CharDriverState *chr;
764
765 if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
766 return NULL;
767 if (stdio_nb_clients == 0) {
768 old_fd0_flags = fcntl(0, F_GETFL);
769 tcgetattr (0, &oldtty);
770 fcntl(0, F_SETFL, O_NONBLOCK);
771 atexit(term_exit);
772 }
773
774 chr = qemu_chr_open_fd(0, 1);
775 chr->chr_close = qemu_chr_close_stdio;
776 chr->chr_set_echo = qemu_chr_set_echo_stdio;
777 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
778 stdio_nb_clients++;
779 stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
780 display_type != DT_NOGRAPHIC);
781 qemu_chr_set_echo(chr, false);
782
783 return chr;
784 }
785
786 #ifdef __sun__
787 /* Once Solaris has openpty(), this is going to be removed. */
788 static int openpty(int *amaster, int *aslave, char *name,
789 struct termios *termp, struct winsize *winp)
790 {
791 const char *slave;
792 int mfd = -1, sfd = -1;
793
794 *amaster = *aslave = -1;
795
796 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
797 if (mfd < 0)
798 goto err;
799
800 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
801 goto err;
802
803 if ((slave = ptsname(mfd)) == NULL)
804 goto err;
805
806 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
807 goto err;
808
809 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
810 (termp != NULL && tcgetattr(sfd, termp) < 0))
811 goto err;
812
813 if (amaster)
814 *amaster = mfd;
815 if (aslave)
816 *aslave = sfd;
817 if (winp)
818 ioctl(sfd, TIOCSWINSZ, winp);
819
820 return 0;
821
822 err:
823 if (sfd != -1)
824 close(sfd);
825 close(mfd);
826 return -1;
827 }
828
829 static void cfmakeraw (struct termios *termios_p)
830 {
831 termios_p->c_iflag &=
832 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
833 termios_p->c_oflag &= ~OPOST;
834 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
835 termios_p->c_cflag &= ~(CSIZE|PARENB);
836 termios_p->c_cflag |= CS8;
837
838 termios_p->c_cc[VMIN] = 0;
839 termios_p->c_cc[VTIME] = 0;
840 }
841 #endif
842
843 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
844 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
845 || defined(__GLIBC__)
846
847 typedef struct {
848 int fd;
849 int connected;
850 int polling;
851 int read_bytes;
852 QEMUTimer *timer;
853 } PtyCharDriver;
854
855 static void pty_chr_update_read_handler(CharDriverState *chr);
856 static void pty_chr_state(CharDriverState *chr, int connected);
857
858 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
859 {
860 PtyCharDriver *s = chr->opaque;
861
862 if (!s->connected) {
863 /* guest sends data, check for (re-)connect */
864 pty_chr_update_read_handler(chr);
865 return 0;
866 }
867 return send_all(s->fd, buf, len);
868 }
869
870 static int pty_chr_read_poll(void *opaque)
871 {
872 CharDriverState *chr = opaque;
873 PtyCharDriver *s = chr->opaque;
874
875 s->read_bytes = qemu_chr_can_read(chr);
876 return s->read_bytes;
877 }
878
879 static void pty_chr_read(void *opaque)
880 {
881 CharDriverState *chr = opaque;
882 PtyCharDriver *s = chr->opaque;
883 int size, len;
884 uint8_t buf[READ_BUF_LEN];
885
886 len = sizeof(buf);
887 if (len > s->read_bytes)
888 len = s->read_bytes;
889 if (len == 0)
890 return;
891 size = read(s->fd, buf, len);
892 if ((size == -1 && errno == EIO) ||
893 (size == 0)) {
894 pty_chr_state(chr, 0);
895 return;
896 }
897 if (size > 0) {
898 pty_chr_state(chr, 1);
899 qemu_chr_read(chr, buf, size);
900 }
901 }
902
903 static void pty_chr_update_read_handler(CharDriverState *chr)
904 {
905 PtyCharDriver *s = chr->opaque;
906
907 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
908 pty_chr_read, NULL, chr);
909 s->polling = 1;
910 /*
911 * Short timeout here: just need wait long enougth that qemu makes
912 * it through the poll loop once. When reconnected we want a
913 * short timeout so we notice it almost instantly. Otherwise
914 * read() gives us -EIO instantly, making pty_chr_state() reset the
915 * timeout to the normal (much longer) poll interval before the
916 * timer triggers.
917 */
918 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
919 }
920
921 static void pty_chr_state(CharDriverState *chr, int connected)
922 {
923 PtyCharDriver *s = chr->opaque;
924
925 if (!connected) {
926 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
927 s->connected = 0;
928 s->polling = 0;
929 /* (re-)connect poll interval for idle guests: once per second.
930 * We check more frequently in case the guests sends data to
931 * the virtual device linked to our pty. */
932 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
933 } else {
934 if (!s->connected)
935 qemu_chr_generic_open(chr);
936 s->connected = 1;
937 }
938 }
939
940 static void pty_chr_timer(void *opaque)
941 {
942 struct CharDriverState *chr = opaque;
943 PtyCharDriver *s = chr->opaque;
944
945 if (s->connected)
946 return;
947 if (s->polling) {
948 /* If we arrive here without polling being cleared due
949 * read returning -EIO, then we are (re-)connected */
950 pty_chr_state(chr, 1);
951 return;
952 }
953
954 /* Next poll ... */
955 pty_chr_update_read_handler(chr);
956 }
957
958 static void pty_chr_close(struct CharDriverState *chr)
959 {
960 PtyCharDriver *s = chr->opaque;
961
962 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
963 close(s->fd);
964 qemu_del_timer(s->timer);
965 qemu_free_timer(s->timer);
966 qemu_free(s);
967 qemu_chr_event(chr, CHR_EVENT_CLOSED);
968 }
969
970 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
971 {
972 CharDriverState *chr;
973 PtyCharDriver *s;
974 struct termios tty;
975 int slave_fd, len;
976 #if defined(__OpenBSD__) || defined(__DragonFly__)
977 char pty_name[PATH_MAX];
978 #define q_ptsname(x) pty_name
979 #else
980 char *pty_name = NULL;
981 #define q_ptsname(x) ptsname(x)
982 #endif
983
984 chr = qemu_mallocz(sizeof(CharDriverState));
985 s = qemu_mallocz(sizeof(PtyCharDriver));
986
987 if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
988 return NULL;
989 }
990
991 /* Set raw attributes on the pty. */
992 tcgetattr(slave_fd, &tty);
993 cfmakeraw(&tty);
994 tcsetattr(slave_fd, TCSAFLUSH, &tty);
995 close(slave_fd);
996
997 len = strlen(q_ptsname(s->fd)) + 5;
998 chr->filename = qemu_malloc(len);
999 snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
1000 qemu_opt_set(opts, "path", q_ptsname(s->fd));
1001 fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
1002
1003 chr->opaque = s;
1004 chr->chr_write = pty_chr_write;
1005 chr->chr_update_read_handler = pty_chr_update_read_handler;
1006 chr->chr_close = pty_chr_close;
1007
1008 s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
1009
1010 return chr;
1011 }
1012
1013 static void tty_serial_init(int fd, int speed,
1014 int parity, int data_bits, int stop_bits)
1015 {
1016 struct termios tty;
1017 speed_t spd;
1018
1019 #if 0
1020 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1021 speed, parity, data_bits, stop_bits);
1022 #endif
1023 tcgetattr (fd, &tty);
1024
1025 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1026 speed = speed * 10 / 11;
1027 do {
1028 check_speed(50);
1029 check_speed(75);
1030 check_speed(110);
1031 check_speed(134);
1032 check_speed(150);
1033 check_speed(200);
1034 check_speed(300);
1035 check_speed(600);
1036 check_speed(1200);
1037 check_speed(1800);
1038 check_speed(2400);
1039 check_speed(4800);
1040 check_speed(9600);
1041 check_speed(19200);
1042 check_speed(38400);
1043 /* Non-Posix values follow. They may be unsupported on some systems. */
1044 check_speed(57600);
1045 check_speed(115200);
1046 #ifdef B230400
1047 check_speed(230400);
1048 #endif
1049 #ifdef B460800
1050 check_speed(460800);
1051 #endif
1052 #ifdef B500000
1053 check_speed(500000);
1054 #endif
1055 #ifdef B576000
1056 check_speed(576000);
1057 #endif
1058 #ifdef B921600
1059 check_speed(921600);
1060 #endif
1061 #ifdef B1000000
1062 check_speed(1000000);
1063 #endif
1064 #ifdef B1152000
1065 check_speed(1152000);
1066 #endif
1067 #ifdef B1500000
1068 check_speed(1500000);
1069 #endif
1070 #ifdef B2000000
1071 check_speed(2000000);
1072 #endif
1073 #ifdef B2500000
1074 check_speed(2500000);
1075 #endif
1076 #ifdef B3000000
1077 check_speed(3000000);
1078 #endif
1079 #ifdef B3500000
1080 check_speed(3500000);
1081 #endif
1082 #ifdef B4000000
1083 check_speed(4000000);
1084 #endif
1085 spd = B115200;
1086 } while (0);
1087
1088 cfsetispeed(&tty, spd);
1089 cfsetospeed(&tty, spd);
1090
1091 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1092 |INLCR|IGNCR|ICRNL|IXON);
1093 tty.c_oflag |= OPOST;
1094 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1095 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1096 switch(data_bits) {
1097 default:
1098 case 8:
1099 tty.c_cflag |= CS8;
1100 break;
1101 case 7:
1102 tty.c_cflag |= CS7;
1103 break;
1104 case 6:
1105 tty.c_cflag |= CS6;
1106 break;
1107 case 5:
1108 tty.c_cflag |= CS5;
1109 break;
1110 }
1111 switch(parity) {
1112 default:
1113 case 'N':
1114 break;
1115 case 'E':
1116 tty.c_cflag |= PARENB;
1117 break;
1118 case 'O':
1119 tty.c_cflag |= PARENB | PARODD;
1120 break;
1121 }
1122 if (stop_bits == 2)
1123 tty.c_cflag |= CSTOPB;
1124
1125 tcsetattr (fd, TCSANOW, &tty);
1126 }
1127
1128 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1129 {
1130 FDCharDriver *s = chr->opaque;
1131
1132 switch(cmd) {
1133 case CHR_IOCTL_SERIAL_SET_PARAMS:
1134 {
1135 QEMUSerialSetParams *ssp = arg;
1136 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1137 ssp->data_bits, ssp->stop_bits);
1138 }
1139 break;
1140 case CHR_IOCTL_SERIAL_SET_BREAK:
1141 {
1142 int enable = *(int *)arg;
1143 if (enable)
1144 tcsendbreak(s->fd_in, 1);
1145 }
1146 break;
1147 case CHR_IOCTL_SERIAL_GET_TIOCM:
1148 {
1149 int sarg = 0;
1150 int *targ = (int *)arg;
1151 ioctl(s->fd_in, TIOCMGET, &sarg);
1152 *targ = 0;
1153 if (sarg & TIOCM_CTS)
1154 *targ |= CHR_TIOCM_CTS;
1155 if (sarg & TIOCM_CAR)
1156 *targ |= CHR_TIOCM_CAR;
1157 if (sarg & TIOCM_DSR)
1158 *targ |= CHR_TIOCM_DSR;
1159 if (sarg & TIOCM_RI)
1160 *targ |= CHR_TIOCM_RI;
1161 if (sarg & TIOCM_DTR)
1162 *targ |= CHR_TIOCM_DTR;
1163 if (sarg & TIOCM_RTS)
1164 *targ |= CHR_TIOCM_RTS;
1165 }
1166 break;
1167 case CHR_IOCTL_SERIAL_SET_TIOCM:
1168 {
1169 int sarg = *(int *)arg;
1170 int targ = 0;
1171 ioctl(s->fd_in, TIOCMGET, &targ);
1172 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1173 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1174 if (sarg & CHR_TIOCM_CTS)
1175 targ |= TIOCM_CTS;
1176 if (sarg & CHR_TIOCM_CAR)
1177 targ |= TIOCM_CAR;
1178 if (sarg & CHR_TIOCM_DSR)
1179 targ |= TIOCM_DSR;
1180 if (sarg & CHR_TIOCM_RI)
1181 targ |= TIOCM_RI;
1182 if (sarg & CHR_TIOCM_DTR)
1183 targ |= TIOCM_DTR;
1184 if (sarg & CHR_TIOCM_RTS)
1185 targ |= TIOCM_RTS;
1186 ioctl(s->fd_in, TIOCMSET, &targ);
1187 }
1188 break;
1189 default:
1190 return -ENOTSUP;
1191 }
1192 return 0;
1193 }
1194
1195 static void qemu_chr_close_tty(CharDriverState *chr)
1196 {
1197 FDCharDriver *s = chr->opaque;
1198 int fd = -1;
1199
1200 if (s) {
1201 fd = s->fd_in;
1202 }
1203
1204 fd_chr_close(chr);
1205
1206 if (fd >= 0) {
1207 close(fd);
1208 }
1209 }
1210
1211 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1212 {
1213 const char *filename = qemu_opt_get(opts, "path");
1214 CharDriverState *chr;
1215 int fd;
1216
1217 TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
1218 if (fd < 0) {
1219 return NULL;
1220 }
1221 tty_serial_init(fd, 115200, 'N', 8, 1);
1222 chr = qemu_chr_open_fd(fd, fd);
1223 if (!chr) {
1224 close(fd);
1225 return NULL;
1226 }
1227 chr->chr_ioctl = tty_serial_ioctl;
1228 chr->chr_close = qemu_chr_close_tty;
1229 return chr;
1230 }
1231 #else /* ! __linux__ && ! __sun__ */
1232 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1233 {
1234 return NULL;
1235 }
1236 #endif /* __linux__ || __sun__ */
1237
1238 #if defined(__linux__)
1239 typedef struct {
1240 int fd;
1241 int mode;
1242 } ParallelCharDriver;
1243
1244 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1245 {
1246 if (s->mode != mode) {
1247 int m = mode;
1248 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1249 return 0;
1250 s->mode = mode;
1251 }
1252 return 1;
1253 }
1254
1255 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1256 {
1257 ParallelCharDriver *drv = chr->opaque;
1258 int fd = drv->fd;
1259 uint8_t b;
1260
1261 switch(cmd) {
1262 case CHR_IOCTL_PP_READ_DATA:
1263 if (ioctl(fd, PPRDATA, &b) < 0)
1264 return -ENOTSUP;
1265 *(uint8_t *)arg = b;
1266 break;
1267 case CHR_IOCTL_PP_WRITE_DATA:
1268 b = *(uint8_t *)arg;
1269 if (ioctl(fd, PPWDATA, &b) < 0)
1270 return -ENOTSUP;
1271 break;
1272 case CHR_IOCTL_PP_READ_CONTROL:
1273 if (ioctl(fd, PPRCONTROL, &b) < 0)
1274 return -ENOTSUP;
1275 /* Linux gives only the lowest bits, and no way to know data
1276 direction! For better compatibility set the fixed upper
1277 bits. */
1278 *(uint8_t *)arg = b | 0xc0;
1279 break;
1280 case CHR_IOCTL_PP_WRITE_CONTROL:
1281 b = *(uint8_t *)arg;
1282 if (ioctl(fd, PPWCONTROL, &b) < 0)
1283 return -ENOTSUP;
1284 break;
1285 case CHR_IOCTL_PP_READ_STATUS:
1286 if (ioctl(fd, PPRSTATUS, &b) < 0)
1287 return -ENOTSUP;
1288 *(uint8_t *)arg = b;
1289 break;
1290 case CHR_IOCTL_PP_DATA_DIR:
1291 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1292 return -ENOTSUP;
1293 break;
1294 case CHR_IOCTL_PP_EPP_READ_ADDR:
1295 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1296 struct ParallelIOArg *parg = arg;
1297 int n = read(fd, parg->buffer, parg->count);
1298 if (n != parg->count) {
1299 return -EIO;
1300 }
1301 }
1302 break;
1303 case CHR_IOCTL_PP_EPP_READ:
1304 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1305 struct ParallelIOArg *parg = arg;
1306 int n = read(fd, parg->buffer, parg->count);
1307 if (n != parg->count) {
1308 return -EIO;
1309 }
1310 }
1311 break;
1312 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1313 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1314 struct ParallelIOArg *parg = arg;
1315 int n = write(fd, parg->buffer, parg->count);
1316 if (n != parg->count) {
1317 return -EIO;
1318 }
1319 }
1320 break;
1321 case CHR_IOCTL_PP_EPP_WRITE:
1322 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1323 struct ParallelIOArg *parg = arg;
1324 int n = write(fd, parg->buffer, parg->count);
1325 if (n != parg->count) {
1326 return -EIO;
1327 }
1328 }
1329 break;
1330 default:
1331 return -ENOTSUP;
1332 }
1333 return 0;
1334 }
1335
1336 static void pp_close(CharDriverState *chr)
1337 {
1338 ParallelCharDriver *drv = chr->opaque;
1339 int fd = drv->fd;
1340
1341 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1342 ioctl(fd, PPRELEASE);
1343 close(fd);
1344 qemu_free(drv);
1345 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1346 }
1347
1348 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1349 {
1350 const char *filename = qemu_opt_get(opts, "path");
1351 CharDriverState *chr;
1352 ParallelCharDriver *drv;
1353 int fd;
1354
1355 TFR(fd = open(filename, O_RDWR));
1356 if (fd < 0)
1357 return NULL;
1358
1359 if (ioctl(fd, PPCLAIM) < 0) {
1360 close(fd);
1361 return NULL;
1362 }
1363
1364 drv = qemu_mallocz(sizeof(ParallelCharDriver));
1365 drv->fd = fd;
1366 drv->mode = IEEE1284_MODE_COMPAT;
1367
1368 chr = qemu_mallocz(sizeof(CharDriverState));
1369 chr->chr_write = null_chr_write;
1370 chr->chr_ioctl = pp_ioctl;
1371 chr->chr_close = pp_close;
1372 chr->opaque = drv;
1373
1374 qemu_chr_generic_open(chr);
1375
1376 return chr;
1377 }
1378 #endif /* __linux__ */
1379
1380 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1381 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1382 {
1383 int fd = (int)(intptr_t)chr->opaque;
1384 uint8_t b;
1385
1386 switch(cmd) {
1387 case CHR_IOCTL_PP_READ_DATA:
1388 if (ioctl(fd, PPIGDATA, &b) < 0)
1389 return -ENOTSUP;
1390 *(uint8_t *)arg = b;
1391 break;
1392 case CHR_IOCTL_PP_WRITE_DATA:
1393 b = *(uint8_t *)arg;
1394 if (ioctl(fd, PPISDATA, &b) < 0)
1395 return -ENOTSUP;
1396 break;
1397 case CHR_IOCTL_PP_READ_CONTROL:
1398 if (ioctl(fd, PPIGCTRL, &b) < 0)
1399 return -ENOTSUP;
1400 *(uint8_t *)arg = b;
1401 break;
1402 case CHR_IOCTL_PP_WRITE_CONTROL:
1403 b = *(uint8_t *)arg;
1404 if (ioctl(fd, PPISCTRL, &b) < 0)
1405 return -ENOTSUP;
1406 break;
1407 case CHR_IOCTL_PP_READ_STATUS:
1408 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1409 return -ENOTSUP;
1410 *(uint8_t *)arg = b;
1411 break;
1412 default:
1413 return -ENOTSUP;
1414 }
1415 return 0;
1416 }
1417
1418 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1419 {
1420 const char *filename = qemu_opt_get(opts, "path");
1421 CharDriverState *chr;
1422 int fd;
1423
1424 fd = open(filename, O_RDWR);
1425 if (fd < 0)
1426 return NULL;
1427
1428 chr = qemu_mallocz(sizeof(CharDriverState));
1429 chr->opaque = (void *)(intptr_t)fd;
1430 chr->chr_write = null_chr_write;
1431 chr->chr_ioctl = pp_ioctl;
1432 return chr;
1433 }
1434 #endif
1435
1436 #else /* _WIN32 */
1437
1438 typedef struct {
1439 int max_size;
1440 HANDLE hcom, hrecv, hsend;
1441 OVERLAPPED orecv, osend;
1442 BOOL fpipe;
1443 DWORD len;
1444 } WinCharState;
1445
1446 #define NSENDBUF 2048
1447 #define NRECVBUF 2048
1448 #define MAXCONNECT 1
1449 #define NTIMEOUT 5000
1450
1451 static int win_chr_poll(void *opaque);
1452 static int win_chr_pipe_poll(void *opaque);
1453
1454 static void win_chr_close(CharDriverState *chr)
1455 {
1456 WinCharState *s = chr->opaque;
1457
1458 if (s->hsend) {
1459 CloseHandle(s->hsend);
1460 s->hsend = NULL;
1461 }
1462 if (s->hrecv) {
1463 CloseHandle(s->hrecv);
1464 s->hrecv = NULL;
1465 }
1466 if (s->hcom) {
1467 CloseHandle(s->hcom);
1468 s->hcom = NULL;
1469 }
1470 if (s->fpipe)
1471 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1472 else
1473 qemu_del_polling_cb(win_chr_poll, chr);
1474
1475 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1476 }
1477
1478 static int win_chr_init(CharDriverState *chr, const char *filename)
1479 {
1480 WinCharState *s = chr->opaque;
1481 COMMCONFIG comcfg;
1482 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1483 COMSTAT comstat;
1484 DWORD size;
1485 DWORD err;
1486
1487 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1488 if (!s->hsend) {
1489 fprintf(stderr, "Failed CreateEvent\n");
1490 goto fail;
1491 }
1492 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1493 if (!s->hrecv) {
1494 fprintf(stderr, "Failed CreateEvent\n");
1495 goto fail;
1496 }
1497
1498 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1499 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1500 if (s->hcom == INVALID_HANDLE_VALUE) {
1501 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1502 s->hcom = NULL;
1503 goto fail;
1504 }
1505
1506 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1507 fprintf(stderr, "Failed SetupComm\n");
1508 goto fail;
1509 }
1510
1511 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1512 size = sizeof(COMMCONFIG);
1513 GetDefaultCommConfig(filename, &comcfg, &size);
1514 comcfg.dcb.DCBlength = sizeof(DCB);
1515 CommConfigDialog(filename, NULL, &comcfg);
1516
1517 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1518 fprintf(stderr, "Failed SetCommState\n");
1519 goto fail;
1520 }
1521
1522 if (!SetCommMask(s->hcom, EV_ERR)) {
1523 fprintf(stderr, "Failed SetCommMask\n");
1524 goto fail;
1525 }
1526
1527 cto.ReadIntervalTimeout = MAXDWORD;
1528 if (!SetCommTimeouts(s->hcom, &cto)) {
1529 fprintf(stderr, "Failed SetCommTimeouts\n");
1530 goto fail;
1531 }
1532
1533 if (!ClearCommError(s->hcom, &err, &comstat)) {
1534 fprintf(stderr, "Failed ClearCommError\n");
1535 goto fail;
1536 }
1537 qemu_add_polling_cb(win_chr_poll, chr);
1538 return 0;
1539
1540 fail:
1541 win_chr_close(chr);
1542 return -1;
1543 }
1544
1545 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1546 {
1547 WinCharState *s = chr->opaque;
1548 DWORD len, ret, size, err;
1549
1550 len = len1;
1551 ZeroMemory(&s->osend, sizeof(s->osend));
1552 s->osend.hEvent = s->hsend;
1553 while (len > 0) {
1554 if (s->hsend)
1555 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1556 else
1557 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1558 if (!ret) {
1559 err = GetLastError();
1560 if (err == ERROR_IO_PENDING) {
1561 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1562 if (ret) {
1563 buf += size;
1564 len -= size;
1565 } else {
1566 break;
1567 }
1568 } else {
1569 break;
1570 }
1571 } else {
1572 buf += size;
1573 len -= size;
1574 }
1575 }
1576 return len1 - len;
1577 }
1578
1579 static int win_chr_read_poll(CharDriverState *chr)
1580 {
1581 WinCharState *s = chr->opaque;
1582
1583 s->max_size = qemu_chr_can_read(chr);
1584 return s->max_size;
1585 }
1586
1587 static void win_chr_readfile(CharDriverState *chr)
1588 {
1589 WinCharState *s = chr->opaque;
1590 int ret, err;
1591 uint8_t buf[READ_BUF_LEN];
1592 DWORD size;
1593
1594 ZeroMemory(&s->orecv, sizeof(s->orecv));
1595 s->orecv.hEvent = s->hrecv;
1596 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1597 if (!ret) {
1598 err = GetLastError();
1599 if (err == ERROR_IO_PENDING) {
1600 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1601 }
1602 }
1603
1604 if (size > 0) {
1605 qemu_chr_read(chr, buf, size);
1606 }
1607 }
1608
1609 static void win_chr_read(CharDriverState *chr)
1610 {
1611 WinCharState *s = chr->opaque;
1612
1613 if (s->len > s->max_size)
1614 s->len = s->max_size;
1615 if (s->len == 0)
1616 return;
1617
1618 win_chr_readfile(chr);
1619 }
1620
1621 static int win_chr_poll(void *opaque)
1622 {
1623 CharDriverState *chr = opaque;
1624 WinCharState *s = chr->opaque;
1625 COMSTAT status;
1626 DWORD comerr;
1627
1628 ClearCommError(s->hcom, &comerr, &status);
1629 if (status.cbInQue > 0) {
1630 s->len = status.cbInQue;
1631 win_chr_read_poll(chr);
1632 win_chr_read(chr);
1633 return 1;
1634 }
1635 return 0;
1636 }
1637
1638 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1639 {
1640 const char *filename = qemu_opt_get(opts, "path");
1641 CharDriverState *chr;
1642 WinCharState *s;
1643
1644 chr = qemu_mallocz(sizeof(CharDriverState));
1645 s = qemu_mallocz(sizeof(WinCharState));
1646 chr->opaque = s;
1647 chr->chr_write = win_chr_write;
1648 chr->chr_close = win_chr_close;
1649
1650 if (win_chr_init(chr, filename) < 0) {
1651 free(s);
1652 free(chr);
1653 return NULL;
1654 }
1655 qemu_chr_generic_open(chr);
1656 return chr;
1657 }
1658
1659 static int win_chr_pipe_poll(void *opaque)
1660 {
1661 CharDriverState *chr = opaque;
1662 WinCharState *s = chr->opaque;
1663 DWORD size;
1664
1665 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1666 if (size > 0) {
1667 s->len = size;
1668 win_chr_read_poll(chr);
1669 win_chr_read(chr);
1670 return 1;
1671 }
1672 return 0;
1673 }
1674
1675 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1676 {
1677 WinCharState *s = chr->opaque;
1678 OVERLAPPED ov;
1679 int ret;
1680 DWORD size;
1681 char openname[256];
1682
1683 s->fpipe = TRUE;
1684
1685 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1686 if (!s->hsend) {
1687 fprintf(stderr, "Failed CreateEvent\n");
1688 goto fail;
1689 }
1690 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1691 if (!s->hrecv) {
1692 fprintf(stderr, "Failed CreateEvent\n");
1693 goto fail;
1694 }
1695
1696 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1697 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1698 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1699 PIPE_WAIT,
1700 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1701 if (s->hcom == INVALID_HANDLE_VALUE) {
1702 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1703 s->hcom = NULL;
1704 goto fail;
1705 }
1706
1707 ZeroMemory(&ov, sizeof(ov));
1708 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1709 ret = ConnectNamedPipe(s->hcom, &ov);
1710 if (ret) {
1711 fprintf(stderr, "Failed ConnectNamedPipe\n");
1712 goto fail;
1713 }
1714
1715 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1716 if (!ret) {
1717 fprintf(stderr, "Failed GetOverlappedResult\n");
1718 if (ov.hEvent) {
1719 CloseHandle(ov.hEvent);
1720 ov.hEvent = NULL;
1721 }
1722 goto fail;
1723 }
1724
1725 if (ov.hEvent) {
1726 CloseHandle(ov.hEvent);
1727 ov.hEvent = NULL;
1728 }
1729 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1730 return 0;
1731
1732 fail:
1733 win_chr_close(chr);
1734 return -1;
1735 }
1736
1737
1738 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1739 {
1740 const char *filename = qemu_opt_get(opts, "path");
1741 CharDriverState *chr;
1742 WinCharState *s;
1743
1744 chr = qemu_mallocz(sizeof(CharDriverState));
1745 s = qemu_mallocz(sizeof(WinCharState));
1746 chr->opaque = s;
1747 chr->chr_write = win_chr_write;
1748 chr->chr_close = win_chr_close;
1749
1750 if (win_chr_pipe_init(chr, filename) < 0) {
1751 free(s);
1752 free(chr);
1753 return NULL;
1754 }
1755 qemu_chr_generic_open(chr);
1756 return chr;
1757 }
1758
1759 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1760 {
1761 CharDriverState *chr;
1762 WinCharState *s;
1763
1764 chr = qemu_mallocz(sizeof(CharDriverState));
1765 s = qemu_mallocz(sizeof(WinCharState));
1766 s->hcom = fd_out;
1767 chr->opaque = s;
1768 chr->chr_write = win_chr_write;
1769 qemu_chr_generic_open(chr);
1770 return chr;
1771 }
1772
1773 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1774 {
1775 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1776 }
1777
1778 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1779 {
1780 const char *file_out = qemu_opt_get(opts, "path");
1781 HANDLE fd_out;
1782
1783 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1784 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1785 if (fd_out == INVALID_HANDLE_VALUE)
1786 return NULL;
1787
1788 return qemu_chr_open_win_file(fd_out);
1789 }
1790 #endif /* !_WIN32 */
1791
1792 /***********************************************************/
1793 /* UDP Net console */
1794
1795 typedef struct {
1796 int fd;
1797 uint8_t buf[READ_BUF_LEN];
1798 int bufcnt;
1799 int bufptr;
1800 int max_size;
1801 } NetCharDriver;
1802
1803 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1804 {
1805 NetCharDriver *s = chr->opaque;
1806
1807 return send(s->fd, (const void *)buf, len, 0);
1808 }
1809
1810 static int udp_chr_read_poll(void *opaque)
1811 {
1812 CharDriverState *chr = opaque;
1813 NetCharDriver *s = chr->opaque;
1814
1815 s->max_size = qemu_chr_can_read(chr);
1816
1817 /* If there were any stray characters in the queue process them
1818 * first
1819 */
1820 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1821 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1822 s->bufptr++;
1823 s->max_size = qemu_chr_can_read(chr);
1824 }
1825 return s->max_size;
1826 }
1827
1828 static void udp_chr_read(void *opaque)
1829 {
1830 CharDriverState *chr = opaque;
1831 NetCharDriver *s = chr->opaque;
1832
1833 if (s->max_size == 0)
1834 return;
1835 s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1836 s->bufptr = s->bufcnt;
1837 if (s->bufcnt <= 0)
1838 return;
1839
1840 s->bufptr = 0;
1841 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
1842 qemu_chr_read(chr, &s->buf[s->bufptr], 1);
1843 s->bufptr++;
1844 s->max_size = qemu_chr_can_read(chr);
1845 }
1846 }
1847
1848 static void udp_chr_update_read_handler(CharDriverState *chr)
1849 {
1850 NetCharDriver *s = chr->opaque;
1851
1852 if (s->fd >= 0) {
1853 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
1854 udp_chr_read, NULL, chr);
1855 }
1856 }
1857
1858 static void udp_chr_close(CharDriverState *chr)
1859 {
1860 NetCharDriver *s = chr->opaque;
1861 if (s->fd >= 0) {
1862 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1863 closesocket(s->fd);
1864 }
1865 qemu_free(s);
1866 qemu_chr_event(chr, CHR_EVENT_CLOSED);
1867 }
1868
1869 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
1870 {
1871 CharDriverState *chr = NULL;
1872 NetCharDriver *s = NULL;
1873 int fd = -1;
1874
1875 chr = qemu_mallocz(sizeof(CharDriverState));
1876 s = qemu_mallocz(sizeof(NetCharDriver));
1877
1878 fd = inet_dgram_opts(opts);
1879 if (fd < 0) {
1880 fprintf(stderr, "inet_dgram_opts failed\n");
1881 goto return_err;
1882 }
1883
1884 s->fd = fd;
1885 s->bufcnt = 0;
1886 s->bufptr = 0;
1887 chr->opaque = s;
1888 chr->chr_write = udp_chr_write;
1889 chr->chr_update_read_handler = udp_chr_update_read_handler;
1890 chr->chr_close = udp_chr_close;
1891 return chr;
1892
1893 return_err:
1894 if (chr)
1895 free(chr);
1896 if (s)
1897 free(s);
1898 if (fd >= 0)
1899 closesocket(fd);
1900 return NULL;
1901 }
1902
1903 /***********************************************************/
1904 /* TCP Net console */
1905
1906 typedef struct {
1907 int fd, listen_fd;
1908 int connected;
1909 int max_size;
1910 int do_telnetopt;
1911 int do_nodelay;
1912 int is_unix;
1913 int msgfd;
1914 } TCPCharDriver;
1915
1916 static void tcp_chr_accept(void *opaque);
1917
1918 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1919 {
1920 TCPCharDriver *s = chr->opaque;
1921 if (s->connected) {
1922 return send_all(s->fd, buf, len);
1923 } else {
1924 /* XXX: indicate an error ? */
1925 return len;
1926 }
1927 }
1928
1929 static int tcp_chr_read_poll(void *opaque)
1930 {
1931 CharDriverState *chr = opaque;
1932 TCPCharDriver *s = chr->opaque;
1933 if (!s->connected)
1934 return 0;
1935 s->max_size = qemu_chr_can_read(chr);
1936 return s->max_size;
1937 }
1938
1939 #define IAC 255
1940 #define IAC_BREAK 243
1941 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1942 TCPCharDriver *s,
1943 uint8_t *buf, int *size)
1944 {
1945 /* Handle any telnet client's basic IAC options to satisfy char by
1946 * char mode with no echo. All IAC options will be removed from
1947 * the buf and the do_telnetopt variable will be used to track the
1948 * state of the width of the IAC information.
1949 *
1950 * IAC commands come in sets of 3 bytes with the exception of the
1951 * "IAC BREAK" command and the double IAC.
1952 */
1953
1954 int i;
1955 int j = 0;
1956
1957 for (i = 0; i < *size; i++) {
1958 if (s->do_telnetopt > 1) {
1959 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
1960 /* Double IAC means send an IAC */
1961 if (j != i)
1962 buf[j] = buf[i];
1963 j++;
1964 s->do_telnetopt = 1;
1965 } else {
1966 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
1967 /* Handle IAC break commands by sending a serial break */
1968 qemu_chr_event(chr, CHR_EVENT_BREAK);
1969 s->do_telnetopt++;
1970 }
1971 s->do_telnetopt++;
1972 }
1973 if (s->do_telnetopt >= 4) {
1974 s->do_telnetopt = 1;
1975 }
1976 } else {
1977 if ((unsigned char)buf[i] == IAC) {
1978 s->do_telnetopt = 2;
1979 } else {
1980 if (j != i)
1981 buf[j] = buf[i];
1982 j++;
1983 }
1984 }
1985 }
1986 *size = j;
1987 }
1988
1989 static int tcp_get_msgfd(CharDriverState *chr)
1990 {
1991 TCPCharDriver *s = chr->opaque;
1992 int fd = s->msgfd;
1993 s->msgfd = -1;
1994 return fd;
1995 }
1996
1997 #ifndef _WIN32
1998 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
1999 {
2000 TCPCharDriver *s = chr->opaque;
2001 struct cmsghdr *cmsg;
2002
2003 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2004 int fd;
2005
2006 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2007 cmsg->cmsg_level != SOL_SOCKET ||
2008 cmsg->cmsg_type != SCM_RIGHTS)
2009 continue;
2010
2011 fd = *((int *)CMSG_DATA(cmsg));
2012 if (fd < 0)
2013 continue;
2014
2015 if (s->msgfd != -1)
2016 close(s->msgfd);
2017 s->msgfd = fd;
2018 }
2019 }
2020
2021 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2022 {
2023 TCPCharDriver *s = chr->opaque;
2024 struct msghdr msg = { NULL, };
2025 struct iovec iov[1];
2026 union {
2027 struct cmsghdr cmsg;
2028 char control[CMSG_SPACE(sizeof(int))];
2029 } msg_control;
2030 ssize_t ret;
2031
2032 iov[0].iov_base = buf;
2033 iov[0].iov_len = len;
2034
2035 msg.msg_iov = iov;
2036 msg.msg_iovlen = 1;
2037 msg.msg_control = &msg_control;
2038 msg.msg_controllen = sizeof(msg_control);
2039
2040 ret = recvmsg(s->fd, &msg, 0);
2041 if (ret > 0 && s->is_unix)
2042 unix_process_msgfd(chr, &msg);
2043
2044 return ret;
2045 }
2046 #else
2047 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2048 {
2049 TCPCharDriver *s = chr->opaque;
2050 return recv(s->fd, buf, len, 0);
2051 }
2052 #endif
2053
2054 static void tcp_chr_read(void *opaque)
2055 {
2056 CharDriverState *chr = opaque;
2057 TCPCharDriver *s = chr->opaque;
2058 uint8_t buf[READ_BUF_LEN];
2059 int len, size;
2060
2061 if (!s->connected || s->max_size <= 0)
2062 return;
2063 len = sizeof(buf);
2064 if (len > s->max_size)
2065 len = s->max_size;
2066 size = tcp_chr_recv(chr, (void *)buf, len);
2067 if (size == 0) {
2068 /* connection closed */
2069 s->connected = 0;
2070 if (s->listen_fd >= 0) {
2071 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2072 }
2073 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2074 closesocket(s->fd);
2075 s->fd = -1;
2076 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2077 } else if (size > 0) {
2078 if (s->do_telnetopt)
2079 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2080 if (size > 0)
2081 qemu_chr_read(chr, buf, size);
2082 }
2083 }
2084
2085 #ifndef _WIN32
2086 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2087 {
2088 return qemu_chr_open_fd(eventfd, eventfd);
2089 }
2090 #endif
2091
2092 static void tcp_chr_connect(void *opaque)
2093 {
2094 CharDriverState *chr = opaque;
2095 TCPCharDriver *s = chr->opaque;
2096
2097 s->connected = 1;
2098 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2099 tcp_chr_read, NULL, chr);
2100 qemu_chr_generic_open(chr);
2101 }
2102
2103 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2104 static void tcp_chr_telnet_init(int fd)
2105 {
2106 char buf[3];
2107 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2108 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2109 send(fd, (char *)buf, 3, 0);
2110 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2111 send(fd, (char *)buf, 3, 0);
2112 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2113 send(fd, (char *)buf, 3, 0);
2114 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2115 send(fd, (char *)buf, 3, 0);
2116 }
2117
2118 static void socket_set_nodelay(int fd)
2119 {
2120 int val = 1;
2121 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2122 }
2123
2124 static void tcp_chr_accept(void *opaque)
2125 {
2126 CharDriverState *chr = opaque;
2127 TCPCharDriver *s = chr->opaque;
2128 struct sockaddr_in saddr;
2129 #ifndef _WIN32
2130 struct sockaddr_un uaddr;
2131 #endif
2132 struct sockaddr *addr;
2133 socklen_t len;
2134 int fd;
2135
2136 for(;;) {
2137 #ifndef _WIN32
2138 if (s->is_unix) {
2139 len = sizeof(uaddr);
2140 addr = (struct sockaddr *)&uaddr;
2141 } else
2142 #endif
2143 {
2144 len = sizeof(saddr);
2145 addr = (struct sockaddr *)&saddr;
2146 }
2147 fd = qemu_accept(s->listen_fd, addr, &len);
2148 if (fd < 0 && errno != EINTR) {
2149 return;
2150 } else if (fd >= 0) {
2151 if (s->do_telnetopt)
2152 tcp_chr_telnet_init(fd);
2153 break;
2154 }
2155 }
2156 socket_set_nonblock(fd);
2157 if (s->do_nodelay)
2158 socket_set_nodelay(fd);
2159 s->fd = fd;
2160 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2161 tcp_chr_connect(chr);
2162 }
2163
2164 static void tcp_chr_close(CharDriverState *chr)
2165 {
2166 TCPCharDriver *s = chr->opaque;
2167 if (s->fd >= 0) {
2168 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2169 closesocket(s->fd);
2170 }
2171 if (s->listen_fd >= 0) {
2172 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
2173 closesocket(s->listen_fd);
2174 }
2175 qemu_free(s);
2176 qemu_chr_event(chr, CHR_EVENT_CLOSED);
2177 }
2178
2179 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2180 {
2181 CharDriverState *chr = NULL;
2182 TCPCharDriver *s = NULL;
2183 int fd = -1;
2184 int is_listen;
2185 int is_waitconnect;
2186 int do_nodelay;
2187 int is_unix;
2188 int is_telnet;
2189
2190 is_listen = qemu_opt_get_bool(opts, "server", 0);
2191 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2192 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2193 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2194 is_unix = qemu_opt_get(opts, "path") != NULL;
2195 if (!is_listen)
2196 is_waitconnect = 0;
2197
2198 chr = qemu_mallocz(sizeof(CharDriverState));
2199 s = qemu_mallocz(sizeof(TCPCharDriver));
2200
2201 if (is_unix) {
2202 if (is_listen) {
2203 fd = unix_listen_opts(opts);
2204 } else {
2205 fd = unix_connect_opts(opts);
2206 }
2207 } else {
2208 if (is_listen) {
2209 fd = inet_listen_opts(opts, 0);
2210 } else {
2211 fd = inet_connect_opts(opts);
2212 }
2213 }
2214 if (fd < 0)
2215 goto fail;
2216
2217 if (!is_waitconnect)
2218 socket_set_nonblock(fd);
2219
2220 s->connected = 0;
2221 s->fd = -1;
2222 s->listen_fd = -1;
2223 s->msgfd = -1;
2224 s->is_unix = is_unix;
2225 s->do_nodelay = do_nodelay && !is_unix;
2226
2227 chr->opaque = s;
2228 chr->chr_write = tcp_chr_write;
2229 chr->chr_close = tcp_chr_close;
2230 chr->get_msgfd = tcp_get_msgfd;
2231
2232 if (is_listen) {
2233 s->listen_fd = fd;
2234 qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
2235 if (is_telnet)
2236 s->do_telnetopt = 1;
2237
2238 } else {
2239 s->connected = 1;
2240 s->fd = fd;
2241 socket_set_nodelay(fd);
2242 tcp_chr_connect(chr);
2243 }
2244
2245 /* for "info chardev" monitor command */
2246 chr->filename = qemu_malloc(256);
2247 if (is_unix) {
2248 snprintf(chr->filename, 256, "unix:%s%s",
2249 qemu_opt_get(opts, "path"),
2250 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2251 } else if (is_telnet) {
2252 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2253 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2254 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2255 } else {
2256 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2257 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2258 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2259 }
2260
2261 if (is_listen && is_waitconnect) {
2262 printf("QEMU waiting for connection on: %s\n",
2263 chr->filename);
2264 tcp_chr_accept(chr);
2265 socket_set_nonblock(s->listen_fd);
2266 }
2267 return chr;
2268
2269 fail:
2270 if (fd >= 0)
2271 closesocket(fd);
2272 qemu_free(s);
2273 qemu_free(chr);
2274 return NULL;
2275 }
2276
2277 /***********************************************************/
2278 /* Memory chardev */
2279 typedef struct {
2280 size_t outbuf_size;
2281 size_t outbuf_capacity;
2282 uint8_t *outbuf;
2283 } MemoryDriver;
2284
2285 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2286 {
2287 MemoryDriver *d = chr->opaque;
2288
2289 /* TODO: the QString implementation has the same code, we should
2290 * introduce a generic way to do this in cutils.c */
2291 if (d->outbuf_capacity < d->outbuf_size + len) {
2292 /* grow outbuf */
2293 d->outbuf_capacity += len;
2294 d->outbuf_capacity *= 2;
2295 d->outbuf = qemu_realloc(d->outbuf, d->outbuf_capacity);
2296 }
2297
2298 memcpy(d->outbuf + d->outbuf_size, buf, len);
2299 d->outbuf_size += len;
2300
2301 return len;
2302 }
2303
2304 void qemu_chr_init_mem(CharDriverState *chr)
2305 {
2306 MemoryDriver *d;
2307
2308 d = qemu_malloc(sizeof(*d));
2309 d->outbuf_size = 0;
2310 d->outbuf_capacity = 4096;
2311 d->outbuf = qemu_mallocz(d->outbuf_capacity);
2312
2313 memset(chr, 0, sizeof(*chr));
2314 chr->opaque = d;
2315 chr->chr_write = mem_chr_write;
2316 }
2317
2318 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2319 {
2320 MemoryDriver *d = chr->opaque;
2321 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2322 }
2323
2324 /* NOTE: this driver can not be closed with qemu_chr_close()! */
2325 void qemu_chr_close_mem(CharDriverState *chr)
2326 {
2327 MemoryDriver *d = chr->opaque;
2328
2329 qemu_free(d->outbuf);
2330 qemu_free(chr->opaque);
2331 chr->opaque = NULL;
2332 chr->chr_write = NULL;
2333 }
2334
2335 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2336 {
2337 const MemoryDriver *d = chr->opaque;
2338 return d->outbuf_size;
2339 }
2340
2341 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2342 {
2343 char host[65], port[33], width[8], height[8];
2344 int pos;
2345 const char *p;
2346 QemuOpts *opts;
2347
2348 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2349 if (NULL == opts)
2350 return NULL;
2351
2352 if (strstart(filename, "mon:", &p)) {
2353 filename = p;
2354 qemu_opt_set(opts, "mux", "on");
2355 }
2356
2357 if (strcmp(filename, "null") == 0 ||
2358 strcmp(filename, "pty") == 0 ||
2359 strcmp(filename, "msmouse") == 0 ||
2360 strcmp(filename, "braille") == 0 ||
2361 strcmp(filename, "stdio") == 0) {
2362 qemu_opt_set(opts, "backend", filename);
2363 return opts;
2364 }
2365 if (strstart(filename, "vc", &p)) {
2366 qemu_opt_set(opts, "backend", "vc");
2367 if (*p == ':') {
2368 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2369 /* pixels */
2370 qemu_opt_set(opts, "width", width);
2371 qemu_opt_set(opts, "height", height);
2372 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2373 /* chars */
2374 qemu_opt_set(opts, "cols", width);
2375 qemu_opt_set(opts, "rows", height);
2376 } else {
2377 goto fail;
2378 }
2379 }
2380 return opts;
2381 }
2382 if (strcmp(filename, "con:") == 0) {
2383 qemu_opt_set(opts, "backend", "console");
2384 return opts;
2385 }
2386 if (strstart(filename, "COM", NULL)) {
2387 qemu_opt_set(opts, "backend", "serial");
2388 qemu_opt_set(opts, "path", filename);
2389 return opts;
2390 }
2391 if (strstart(filename, "file:", &p)) {
2392 qemu_opt_set(opts, "backend", "file");
2393 qemu_opt_set(opts, "path", p);
2394 return opts;
2395 }
2396 if (strstart(filename, "pipe:", &p)) {
2397 qemu_opt_set(opts, "backend", "pipe");
2398 qemu_opt_set(opts, "path", p);
2399 return opts;
2400 }
2401 if (strstart(filename, "tcp:", &p) ||
2402 strstart(filename, "telnet:", &p)) {
2403 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2404 host[0] = 0;
2405 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2406 goto fail;
2407 }
2408 qemu_opt_set(opts, "backend", "socket");
2409 qemu_opt_set(opts, "host", host);
2410 qemu_opt_set(opts, "port", port);
2411 if (p[pos] == ',') {
2412 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2413 goto fail;
2414 }
2415 if (strstart(filename, "telnet:", &p))
2416 qemu_opt_set(opts, "telnet", "on");
2417 return opts;
2418 }
2419 if (strstart(filename, "udp:", &p)) {
2420 qemu_opt_set(opts, "backend", "udp");
2421 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2422 host[0] = 0;
2423 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2424 goto fail;
2425 }
2426 }
2427 qemu_opt_set(opts, "host", host);
2428 qemu_opt_set(opts, "port", port);
2429 if (p[pos] == '@') {
2430 p += pos + 1;
2431 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2432 host[0] = 0;
2433 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2434 goto fail;
2435 }
2436 }
2437 qemu_opt_set(opts, "localaddr", host);
2438 qemu_opt_set(opts, "localport", port);
2439 }
2440 return opts;
2441 }
2442 if (strstart(filename, "unix:", &p)) {
2443 qemu_opt_set(opts, "backend", "socket");
2444 if (qemu_opts_do_parse(opts, p, "path") != 0)
2445 goto fail;
2446 return opts;
2447 }
2448 if (strstart(filename, "/dev/parport", NULL) ||
2449 strstart(filename, "/dev/ppi", NULL)) {
2450 qemu_opt_set(opts, "backend", "parport");
2451 qemu_opt_set(opts, "path", filename);
2452 return opts;
2453 }
2454 if (strstart(filename, "/dev/", NULL)) {
2455 qemu_opt_set(opts, "backend", "tty");
2456 qemu_opt_set(opts, "path", filename);
2457 return opts;
2458 }
2459
2460 fail:
2461 qemu_opts_del(opts);
2462 return NULL;
2463 }
2464
2465 static const struct {
2466 const char *name;
2467 CharDriverState *(*open)(QemuOpts *opts);
2468 } backend_table[] = {
2469 { .name = "null", .open = qemu_chr_open_null },
2470 { .name = "socket", .open = qemu_chr_open_socket },
2471 { .name = "udp", .open = qemu_chr_open_udp },
2472 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2473 { .name = "vc", .open = text_console_init },
2474 #ifdef _WIN32
2475 { .name = "file", .open = qemu_chr_open_win_file_out },
2476 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2477 { .name = "console", .open = qemu_chr_open_win_con },
2478 { .name = "serial", .open = qemu_chr_open_win },
2479 #else
2480 { .name = "file", .open = qemu_chr_open_file_out },
2481 { .name = "pipe", .open = qemu_chr_open_pipe },
2482 { .name = "pty", .open = qemu_chr_open_pty },
2483 { .name = "stdio", .open = qemu_chr_open_stdio },
2484 #endif
2485 #ifdef CONFIG_BRLAPI
2486 { .name = "braille", .open = chr_baum_init },
2487 #endif
2488 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2489 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2490 || defined(__FreeBSD_kernel__)
2491 { .name = "tty", .open = qemu_chr_open_tty },
2492 #endif
2493 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2494 || defined(__FreeBSD_kernel__)
2495 { .name = "parport", .open = qemu_chr_open_pp },
2496 #endif
2497 #ifdef CONFIG_SPICE
2498 { .name = "spicevmc", .open = qemu_chr_open_spice },
2499 #endif
2500 };
2501
2502 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
2503 void (*init)(struct CharDriverState *s))
2504 {
2505 CharDriverState *chr;
2506 int i;
2507
2508 if (qemu_opts_id(opts) == NULL) {
2509 fprintf(stderr, "chardev: no id specified\n");
2510 return NULL;
2511 }
2512
2513 if (qemu_opt_get(opts, "backend") == NULL) {
2514 fprintf(stderr, "chardev: \"%s\" missing backend\n",
2515 qemu_opts_id(opts));
2516 return NULL;
2517 }
2518 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2519 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2520 break;
2521 }
2522 if (i == ARRAY_SIZE(backend_table)) {
2523 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2524 qemu_opt_get(opts, "backend"));
2525 return NULL;
2526 }
2527
2528 chr = backend_table[i].open(opts);
2529 if (!chr) {
2530 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2531 qemu_opt_get(opts, "backend"));
2532 return NULL;
2533 }
2534
2535 if (!chr->filename)
2536 chr->filename = qemu_strdup(qemu_opt_get(opts, "backend"));
2537 chr->init = init;
2538 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2539
2540 if (qemu_opt_get_bool(opts, "mux", 0)) {
2541 CharDriverState *base = chr;
2542 int len = strlen(qemu_opts_id(opts)) + 6;
2543 base->label = qemu_malloc(len);
2544 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2545 chr = qemu_chr_open_mux(base);
2546 chr->filename = base->filename;
2547 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2548 }
2549 chr->label = qemu_strdup(qemu_opts_id(opts));
2550 return chr;
2551 }
2552
2553 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2554 {
2555 const char *p;
2556 CharDriverState *chr;
2557 QemuOpts *opts;
2558
2559 if (strstart(filename, "chardev:", &p)) {
2560 return qemu_chr_find(p);
2561 }
2562
2563 opts = qemu_chr_parse_compat(label, filename);
2564 if (!opts)
2565 return NULL;
2566
2567 chr = qemu_chr_open_opts(opts, init);
2568 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2569 monitor_init(chr, MONITOR_USE_READLINE);
2570 }
2571 qemu_opts_del(opts);
2572 return chr;
2573 }
2574
2575 void qemu_chr_set_echo(struct CharDriverState *chr, bool echo)
2576 {
2577 if (chr->chr_set_echo) {
2578 chr->chr_set_echo(chr, echo);
2579 }
2580 }
2581
2582 void qemu_chr_close(CharDriverState *chr)
2583 {
2584 QTAILQ_REMOVE(&chardevs, chr, next);
2585 if (chr->chr_close)
2586 chr->chr_close(chr);
2587 qemu_free(chr->filename);
2588 qemu_free(chr->label);
2589 qemu_free(chr);
2590 }
2591
2592 static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
2593 {
2594 QDict *chr_dict;
2595 Monitor *mon = opaque;
2596
2597 chr_dict = qobject_to_qdict(obj);
2598 monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
2599 qdict_get_str(chr_dict, "filename"));
2600 }
2601
2602 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
2603 {
2604 qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
2605 }
2606
2607 void qemu_chr_info(Monitor *mon, QObject **ret_data)
2608 {
2609 QList *chr_list;
2610 CharDriverState *chr;
2611
2612 chr_list = qlist_new();
2613
2614 QTAILQ_FOREACH(chr, &chardevs, next) {
2615 QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
2616 chr->label, chr->filename);
2617 qlist_append_obj(chr_list, obj);
2618 }
2619
2620 *ret_data = QOBJECT(chr_list);
2621 }
2622
2623 CharDriverState *qemu_chr_find(const char *name)
2624 {
2625 CharDriverState *chr;
2626
2627 QTAILQ_FOREACH(chr, &chardevs, next) {
2628 if (strcmp(chr->label, name) != 0)
2629 continue;
2630 return chr;
2631 }
2632 return NULL;
2633 }
AR7 emulation for QEMU