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qemu-char: Re-apply style fixes from just reverted aad04cd0
[qemu/kevin.git] / qemu-char.c
blobc25863a15fd230af2f8b526384a99654ee217507
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 "qmp-commands.h"
35
36 #include <unistd.h>
37 #include <fcntl.h>
38 #include <time.h>
39 #include <errno.h>
40 #include <sys/time.h>
41 #include <zlib.h>
42
43 #ifndef _WIN32
44 #include <sys/times.h>
45 #include <sys/wait.h>
46 #include <termios.h>
47 #include <sys/mman.h>
48 #include <sys/ioctl.h>
49 #include <sys/resource.h>
50 #include <sys/socket.h>
51 #include <netinet/in.h>
52 #include <net/if.h>
53 #include <arpa/inet.h>
54 #include <dirent.h>
55 #include <netdb.h>
56 #include <sys/select.h>
57 #ifdef CONFIG_BSD
58 #include <sys/stat.h>
59 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60 #include <libutil.h>
61 #include <dev/ppbus/ppi.h>
62 #include <dev/ppbus/ppbconf.h>
63 #if defined(__GLIBC__)
64 #include <pty.h>
65 #endif
66 #elif defined(__DragonFly__)
67 #include <libutil.h>
68 #include <dev/misc/ppi/ppi.h>
69 #include <bus/ppbus/ppbconf.h>
70 #else
71 #include <util.h>
72 #endif
73 #else
74 #ifdef __linux__
75 #include <pty.h>
76
77 #include <linux/ppdev.h>
78 #include <linux/parport.h>
79 #endif
80 #ifdef __sun__
81 #include <sys/stat.h>
82 #include <sys/ethernet.h>
83 #include <sys/sockio.h>
84 #include <netinet/arp.h>
85 #include <netinet/in.h>
86 #include <netinet/in_systm.h>
87 #include <netinet/ip.h>
88 #include <netinet/ip_icmp.h> // must come after ip.h
89 #include <netinet/udp.h>
90 #include <netinet/tcp.h>
91 #include <net/if.h>
92 #include <syslog.h>
93 #include <stropts.h>
94 #endif
95 #endif
96 #endif
97
98 #include "qemu_socket.h"
99 #include "ui/qemu-spice.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 void qemu_chr_be_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_be_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_fe_write(CharDriverState *s, const uint8_t *buf, int len)
143 {
144 return s->chr_write(s, buf, len);
145 }
146
147 int qemu_chr_fe_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_be_can_write(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_be_write(CharDriverState *s, uint8_t *buf, int len)
162 {
163 s->chr_read(s->handler_opaque, buf, len);
164 }
165
166 int qemu_chr_fe_get_msgfd(CharDriverState *s)
167 {
168 return s->get_msgfd ? s->get_msgfd(s) : -1;
169 }
170
171 int qemu_chr_add_client(CharDriverState *s, int fd)
172 {
173 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
174 }
175
176 void qemu_chr_accept_input(CharDriverState *s)
177 {
178 if (s->chr_accept_input)
179 s->chr_accept_input(s);
180 }
181
182 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
183 {
184 char buf[READ_BUF_LEN];
185 va_list ap;
186 va_start(ap, fmt);
187 vsnprintf(buf, sizeof(buf), fmt, ap);
188 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
189 va_end(ap);
190 }
191
192 void qemu_chr_add_handlers(CharDriverState *s,
193 IOCanReadHandler *fd_can_read,
194 IOReadHandler *fd_read,
195 IOEventHandler *fd_event,
196 void *opaque)
197 {
198 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
199 /* chr driver being released. */
200 ++s->avail_connections;
201 }
202 s->chr_can_read = fd_can_read;
203 s->chr_read = fd_read;
204 s->chr_event = fd_event;
205 s->handler_opaque = opaque;
206 if (s->chr_update_read_handler)
207 s->chr_update_read_handler(s);
208
209 /* We're connecting to an already opened device, so let's make sure we
210 also get the open event */
211 if (s->opened) {
212 qemu_chr_generic_open(s);
213 }
214 }
215
216 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
217 {
218 return len;
219 }
220
221 static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
222 {
223 CharDriverState *chr;
224
225 chr = g_malloc0(sizeof(CharDriverState));
226 chr->chr_write = null_chr_write;
227 return chr;
228 }
229
230 /* MUX driver for serial I/O splitting */
231 #define MAX_MUX 4
232 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
233 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
234 typedef struct {
235 IOCanReadHandler *chr_can_read[MAX_MUX];
236 IOReadHandler *chr_read[MAX_MUX];
237 IOEventHandler *chr_event[MAX_MUX];
238 void *ext_opaque[MAX_MUX];
239 CharDriverState *drv;
240 int focus;
241 int mux_cnt;
242 int term_got_escape;
243 int max_size;
244 /* Intermediate input buffer allows to catch escape sequences even if the
245 currently active device is not accepting any input - but only until it
246 is full as well. */
247 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
248 int prod[MAX_MUX];
249 int cons[MAX_MUX];
250 int timestamps;
251 int linestart;
252 int64_t timestamps_start;
253 } MuxDriver;
254
255
256 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
257 {
258 MuxDriver *d = chr->opaque;
259 int ret;
260 if (!d->timestamps) {
261 ret = d->drv->chr_write(d->drv, buf, len);
262 } else {
263 int i;
264
265 ret = 0;
266 for (i = 0; i < len; i++) {
267 if (d->linestart) {
268 char buf1[64];
269 int64_t ti;
270 int secs;
271
272 ti = qemu_get_clock_ms(rt_clock);
273 if (d->timestamps_start == -1)
274 d->timestamps_start = ti;
275 ti -= d->timestamps_start;
276 secs = ti / 1000;
277 snprintf(buf1, sizeof(buf1),
278 "[%02d:%02d:%02d.%03d] ",
279 secs / 3600,
280 (secs / 60) % 60,
281 secs % 60,
282 (int)(ti % 1000));
283 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
284 d->linestart = 0;
285 }
286 ret += d->drv->chr_write(d->drv, buf+i, 1);
287 if (buf[i] == '\n') {
288 d->linestart = 1;
289 }
290 }
291 }
292 return ret;
293 }
294
295 static const char * const mux_help[] = {
296 "% h print this help\n\r",
297 "% x exit emulator\n\r",
298 "% s save disk data back to file (if -snapshot)\n\r",
299 "% t toggle console timestamps\n\r"
300 "% b send break (magic sysrq)\n\r",
301 "% c switch between console and monitor\n\r",
302 "% % sends %\n\r",
303 NULL
304 };
305
306 int term_escape_char = 0x01; /* ctrl-a is used for escape */
307 static void mux_print_help(CharDriverState *chr)
308 {
309 int i, j;
310 char ebuf[15] = "Escape-Char";
311 char cbuf[50] = "\n\r";
312
313 if (term_escape_char > 0 && term_escape_char < 26) {
314 snprintf(cbuf, sizeof(cbuf), "\n\r");
315 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
316 } else {
317 snprintf(cbuf, sizeof(cbuf),
318 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
319 term_escape_char);
320 }
321 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
322 for (i = 0; mux_help[i] != NULL; i++) {
323 for (j=0; mux_help[i][j] != '\0'; j++) {
324 if (mux_help[i][j] == '%')
325 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
326 else
327 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
328 }
329 }
330 }
331
332 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
333 {
334 if (d->chr_event[mux_nr])
335 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
336 }
337
338 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
339 {
340 if (d->term_got_escape) {
341 d->term_got_escape = 0;
342 if (ch == term_escape_char)
343 goto send_char;
344 switch(ch) {
345 case '?':
346 case 'h':
347 mux_print_help(chr);
348 break;
349 case 'x':
350 {
351 const char *term = "QEMU: Terminated\n\r";
352 chr->chr_write(chr,(uint8_t *)term,strlen(term));
353 exit(0);
354 break;
355 }
356 case 's':
357 bdrv_commit_all();
358 break;
359 case 'b':
360 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
361 break;
362 case 'c':
363 /* Switch to the next registered device */
364 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
365 d->focus++;
366 if (d->focus >= d->mux_cnt)
367 d->focus = 0;
368 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
369 break;
370 case 't':
371 d->timestamps = !d->timestamps;
372 d->timestamps_start = -1;
373 d->linestart = 0;
374 break;
375 }
376 } else if (ch == term_escape_char) {
377 d->term_got_escape = 1;
378 } else {
379 send_char:
380 return 1;
381 }
382 return 0;
383 }
384
385 static void mux_chr_accept_input(CharDriverState *chr)
386 {
387 MuxDriver *d = chr->opaque;
388 int m = d->focus;
389
390 while (d->prod[m] != d->cons[m] &&
391 d->chr_can_read[m] &&
392 d->chr_can_read[m](d->ext_opaque[m])) {
393 d->chr_read[m](d->ext_opaque[m],
394 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
395 }
396 }
397
398 static int mux_chr_can_read(void *opaque)
399 {
400 CharDriverState *chr = opaque;
401 MuxDriver *d = chr->opaque;
402 int m = d->focus;
403
404 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
405 return 1;
406 if (d->chr_can_read[m])
407 return d->chr_can_read[m](d->ext_opaque[m]);
408 return 0;
409 }
410
411 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
412 {
413 CharDriverState *chr = opaque;
414 MuxDriver *d = chr->opaque;
415 int m = d->focus;
416 int i;
417
418 mux_chr_accept_input (opaque);
419
420 for(i = 0; i < size; i++)
421 if (mux_proc_byte(chr, d, buf[i])) {
422 if (d->prod[m] == d->cons[m] &&
423 d->chr_can_read[m] &&
424 d->chr_can_read[m](d->ext_opaque[m]))
425 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
426 else
427 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
428 }
429 }
430
431 static void mux_chr_event(void *opaque, int event)
432 {
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
435 int i;
436
437 /* Send the event to all registered listeners */
438 for (i = 0; i < d->mux_cnt; i++)
439 mux_chr_send_event(d, i, event);
440 }
441
442 static void mux_chr_update_read_handler(CharDriverState *chr)
443 {
444 MuxDriver *d = chr->opaque;
445
446 if (d->mux_cnt >= MAX_MUX) {
447 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
448 return;
449 }
450 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
451 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
452 d->chr_read[d->mux_cnt] = chr->chr_read;
453 d->chr_event[d->mux_cnt] = chr->chr_event;
454 /* Fix up the real driver with mux routines */
455 if (d->mux_cnt == 0) {
456 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
457 mux_chr_event, chr);
458 }
459 if (d->focus != -1) {
460 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
461 }
462 d->focus = d->mux_cnt;
463 d->mux_cnt++;
464 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
465 }
466
467 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
468 {
469 CharDriverState *chr;
470 MuxDriver *d;
471
472 chr = g_malloc0(sizeof(CharDriverState));
473 d = g_malloc0(sizeof(MuxDriver));
474
475 chr->opaque = d;
476 d->drv = drv;
477 d->focus = -1;
478 chr->chr_write = mux_chr_write;
479 chr->chr_update_read_handler = mux_chr_update_read_handler;
480 chr->chr_accept_input = mux_chr_accept_input;
481 /* Frontend guest-open / -close notification is not support with muxes */
482 chr->chr_guest_open = NULL;
483 chr->chr_guest_close = NULL;
484
485 /* Muxes are always open on creation */
486 qemu_chr_generic_open(chr);
487
488 return chr;
489 }
490
491
492 #ifdef _WIN32
493 int send_all(int fd, const void *buf, int len1)
494 {
495 int ret, len;
496
497 len = len1;
498 while (len > 0) {
499 ret = send(fd, buf, len, 0);
500 if (ret < 0) {
501 errno = WSAGetLastError();
502 if (errno != WSAEWOULDBLOCK) {
503 return -1;
504 }
505 } else if (ret == 0) {
506 break;
507 } else {
508 buf += ret;
509 len -= ret;
510 }
511 }
512 return len1 - len;
513 }
514
515 #else
516
517 int send_all(int fd, const void *_buf, int len1)
518 {
519 int ret, len;
520 const uint8_t *buf = _buf;
521
522 len = len1;
523 while (len > 0) {
524 ret = write(fd, buf, len);
525 if (ret < 0) {
526 if (errno != EINTR && errno != EAGAIN)
527 return -1;
528 } else if (ret == 0) {
529 break;
530 } else {
531 buf += ret;
532 len -= ret;
533 }
534 }
535 return len1 - len;
536 }
537 #endif /* !_WIN32 */
538
539 #define STDIO_MAX_CLIENTS 1
540 static int stdio_nb_clients;
541
542 #ifndef _WIN32
543
544 typedef struct {
545 int fd_in, fd_out;
546 int max_size;
547 } FDCharDriver;
548
549
550 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
551 {
552 FDCharDriver *s = chr->opaque;
553 return send_all(s->fd_out, buf, len);
554 }
555
556 static int fd_chr_read_poll(void *opaque)
557 {
558 CharDriverState *chr = opaque;
559 FDCharDriver *s = chr->opaque;
560
561 s->max_size = qemu_chr_be_can_write(chr);
562 return s->max_size;
563 }
564
565 static void fd_chr_read(void *opaque)
566 {
567 CharDriverState *chr = opaque;
568 FDCharDriver *s = chr->opaque;
569 int size, len;
570 uint8_t buf[READ_BUF_LEN];
571
572 len = sizeof(buf);
573 if (len > s->max_size)
574 len = s->max_size;
575 if (len == 0)
576 return;
577 size = read(s->fd_in, buf, len);
578 if (size == 0) {
579 /* FD has been closed. Remove it from the active list. */
580 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
581 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
582 return;
583 }
584 if (size > 0) {
585 qemu_chr_be_write(chr, buf, size);
586 }
587 }
588
589 static void fd_chr_update_read_handler(CharDriverState *chr)
590 {
591 FDCharDriver *s = chr->opaque;
592
593 if (s->fd_in >= 0) {
594 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
595 } else {
596 qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
597 fd_chr_read, NULL, chr);
598 }
599 }
600 }
601
602 static void fd_chr_close(struct CharDriverState *chr)
603 {
604 FDCharDriver *s = chr->opaque;
605
606 if (s->fd_in >= 0) {
607 if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
608 } else {
609 qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
610 }
611 }
612
613 g_free(s);
614 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
615 }
616
617 /* open a character device to a unix fd */
618 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
619 {
620 CharDriverState *chr;
621 FDCharDriver *s;
622
623 chr = g_malloc0(sizeof(CharDriverState));
624 s = g_malloc0(sizeof(FDCharDriver));
625 s->fd_in = fd_in;
626 s->fd_out = fd_out;
627 chr->opaque = s;
628 chr->chr_write = fd_chr_write;
629 chr->chr_update_read_handler = fd_chr_update_read_handler;
630 chr->chr_close = fd_chr_close;
631
632 qemu_chr_generic_open(chr);
633
634 return chr;
635 }
636
637 static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
638 {
639 int fd_out;
640
641 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
642 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
643 if (fd_out < 0) {
644 return NULL;
645 }
646 return qemu_chr_open_fd(-1, fd_out);
647 }
648
649 static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
650 {
651 int fd_in, fd_out;
652 char filename_in[256], filename_out[256];
653 const char *filename = qemu_opt_get(opts, "path");
654
655 if (filename == NULL) {
656 fprintf(stderr, "chardev: pipe: no filename given\n");
657 return NULL;
658 }
659
660 snprintf(filename_in, 256, "%s.in", filename);
661 snprintf(filename_out, 256, "%s.out", filename);
662 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
663 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
664 if (fd_in < 0 || fd_out < 0) {
665 if (fd_in >= 0)
666 close(fd_in);
667 if (fd_out >= 0)
668 close(fd_out);
669 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
670 if (fd_in < 0) {
671 return NULL;
672 }
673 }
674 return qemu_chr_open_fd(fd_in, fd_out);
675 }
676
677
678 /* for STDIO, we handle the case where several clients use it
679 (nographic mode) */
680
681 #define TERM_FIFO_MAX_SIZE 1
682
683 static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
684 static int term_fifo_size;
685
686 static int stdio_read_poll(void *opaque)
687 {
688 CharDriverState *chr = opaque;
689
690 /* try to flush the queue if needed */
691 if (term_fifo_size != 0 && qemu_chr_be_can_write(chr) > 0) {
692 qemu_chr_be_write(chr, term_fifo, 1);
693 term_fifo_size = 0;
694 }
695 /* see if we can absorb more chars */
696 if (term_fifo_size == 0)
697 return 1;
698 else
699 return 0;
700 }
701
702 static void stdio_read(void *opaque)
703 {
704 int size;
705 uint8_t buf[1];
706 CharDriverState *chr = opaque;
707
708 size = read(0, buf, 1);
709 if (size == 0) {
710 /* stdin has been closed. Remove it from the active list. */
711 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
712 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
713 return;
714 }
715 if (size > 0) {
716 if (qemu_chr_be_can_write(chr) > 0) {
717 qemu_chr_be_write(chr, buf, 1);
718 } else if (term_fifo_size == 0) {
719 term_fifo[term_fifo_size++] = buf[0];
720 }
721 }
722 }
723
724 /* init terminal so that we can grab keys */
725 static struct termios oldtty;
726 static int old_fd0_flags;
727 static bool stdio_allow_signal;
728
729 static void term_exit(void)
730 {
731 tcsetattr (0, TCSANOW, &oldtty);
732 fcntl(0, F_SETFL, old_fd0_flags);
733 }
734
735 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
736 {
737 struct termios tty;
738
739 tty = oldtty;
740 if (!echo) {
741 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
742 |INLCR|IGNCR|ICRNL|IXON);
743 tty.c_oflag |= OPOST;
744 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
745 tty.c_cflag &= ~(CSIZE|PARENB);
746 tty.c_cflag |= CS8;
747 tty.c_cc[VMIN] = 1;
748 tty.c_cc[VTIME] = 0;
749 }
750 /* if graphical mode, we allow Ctrl-C handling */
751 if (!stdio_allow_signal)
752 tty.c_lflag &= ~ISIG;
753
754 tcsetattr (0, TCSANOW, &tty);
755 }
756
757 static void qemu_chr_close_stdio(struct CharDriverState *chr)
758 {
759 term_exit();
760 stdio_nb_clients--;
761 qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
762 fd_chr_close(chr);
763 }
764
765 static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
766 {
767 CharDriverState *chr;
768
769 if (stdio_nb_clients >= STDIO_MAX_CLIENTS) {
770 return NULL;
771 }
772 if (stdio_nb_clients == 0) {
773 old_fd0_flags = fcntl(0, F_GETFL);
774 tcgetattr (0, &oldtty);
775 fcntl(0, F_SETFL, O_NONBLOCK);
776 atexit(term_exit);
777 }
778
779 chr = qemu_chr_open_fd(0, 1);
780 chr->chr_close = qemu_chr_close_stdio;
781 chr->chr_set_echo = qemu_chr_set_echo_stdio;
782 qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
783 stdio_nb_clients++;
784 stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
785 display_type != DT_NOGRAPHIC);
786 qemu_chr_fe_set_echo(chr, false);
787
788 return chr;
789 }
790
791 #ifdef __sun__
792 /* Once Solaris has openpty(), this is going to be removed. */
793 static int openpty(int *amaster, int *aslave, char *name,
794 struct termios *termp, struct winsize *winp)
795 {
796 const char *slave;
797 int mfd = -1, sfd = -1;
798
799 *amaster = *aslave = -1;
800
801 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
802 if (mfd < 0)
803 goto err;
804
805 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
806 goto err;
807
808 if ((slave = ptsname(mfd)) == NULL)
809 goto err;
810
811 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
812 goto err;
813
814 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
815 (termp != NULL && tcgetattr(sfd, termp) < 0))
816 goto err;
817
818 if (amaster)
819 *amaster = mfd;
820 if (aslave)
821 *aslave = sfd;
822 if (winp)
823 ioctl(sfd, TIOCSWINSZ, winp);
824
825 return 0;
826
827 err:
828 if (sfd != -1)
829 close(sfd);
830 close(mfd);
831 return -1;
832 }
833
834 static void cfmakeraw (struct termios *termios_p)
835 {
836 termios_p->c_iflag &=
837 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
838 termios_p->c_oflag &= ~OPOST;
839 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
840 termios_p->c_cflag &= ~(CSIZE|PARENB);
841 termios_p->c_cflag |= CS8;
842
843 termios_p->c_cc[VMIN] = 0;
844 termios_p->c_cc[VTIME] = 0;
845 }
846 #endif
847
848 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
849 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
850 || defined(__GLIBC__)
851
852 typedef struct {
853 int fd;
854 int connected;
855 int polling;
856 int read_bytes;
857 QEMUTimer *timer;
858 } PtyCharDriver;
859
860 static void pty_chr_update_read_handler(CharDriverState *chr);
861 static void pty_chr_state(CharDriverState *chr, int connected);
862
863 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
864 {
865 PtyCharDriver *s = chr->opaque;
866
867 if (!s->connected) {
868 /* guest sends data, check for (re-)connect */
869 pty_chr_update_read_handler(chr);
870 return 0;
871 }
872 return send_all(s->fd, buf, len);
873 }
874
875 static int pty_chr_read_poll(void *opaque)
876 {
877 CharDriverState *chr = opaque;
878 PtyCharDriver *s = chr->opaque;
879
880 s->read_bytes = qemu_chr_be_can_write(chr);
881 return s->read_bytes;
882 }
883
884 static void pty_chr_read(void *opaque)
885 {
886 CharDriverState *chr = opaque;
887 PtyCharDriver *s = chr->opaque;
888 int size, len;
889 uint8_t buf[READ_BUF_LEN];
890
891 len = sizeof(buf);
892 if (len > s->read_bytes)
893 len = s->read_bytes;
894 if (len == 0)
895 return;
896 size = read(s->fd, buf, len);
897 if ((size == -1 && errno == EIO) ||
898 (size == 0)) {
899 pty_chr_state(chr, 0);
900 return;
901 }
902 if (size > 0) {
903 pty_chr_state(chr, 1);
904 qemu_chr_be_write(chr, buf, size);
905 }
906 }
907
908 static void pty_chr_update_read_handler(CharDriverState *chr)
909 {
910 PtyCharDriver *s = chr->opaque;
911
912 qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
913 pty_chr_read, NULL, chr);
914 s->polling = 1;
915 /*
916 * Short timeout here: just need wait long enougth that qemu makes
917 * it through the poll loop once. When reconnected we want a
918 * short timeout so we notice it almost instantly. Otherwise
919 * read() gives us -EIO instantly, making pty_chr_state() reset the
920 * timeout to the normal (much longer) poll interval before the
921 * timer triggers.
922 */
923 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
924 }
925
926 static void pty_chr_state(CharDriverState *chr, int connected)
927 {
928 PtyCharDriver *s = chr->opaque;
929
930 if (!connected) {
931 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
932 s->connected = 0;
933 s->polling = 0;
934 /* (re-)connect poll interval for idle guests: once per second.
935 * We check more frequently in case the guests sends data to
936 * the virtual device linked to our pty. */
937 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
938 } else {
939 if (!s->connected)
940 qemu_chr_generic_open(chr);
941 s->connected = 1;
942 }
943 }
944
945 static void pty_chr_timer(void *opaque)
946 {
947 struct CharDriverState *chr = opaque;
948 PtyCharDriver *s = chr->opaque;
949
950 if (s->connected)
951 return;
952 if (s->polling) {
953 /* If we arrive here without polling being cleared due
954 * read returning -EIO, then we are (re-)connected */
955 pty_chr_state(chr, 1);
956 return;
957 }
958
959 /* Next poll ... */
960 pty_chr_update_read_handler(chr);
961 }
962
963 static void pty_chr_close(struct CharDriverState *chr)
964 {
965 PtyCharDriver *s = chr->opaque;
966
967 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
968 close(s->fd);
969 qemu_del_timer(s->timer);
970 qemu_free_timer(s->timer);
971 g_free(s);
972 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
973 }
974
975 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
976 {
977 CharDriverState *chr;
978 PtyCharDriver *s;
979 struct termios tty;
980 int master_fd, slave_fd, len;
981 #if defined(__OpenBSD__) || defined(__DragonFly__)
982 char pty_name[PATH_MAX];
983 #define q_ptsname(x) pty_name
984 #else
985 char *pty_name = NULL;
986 #define q_ptsname(x) ptsname(x)
987 #endif
988
989 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
990 return NULL;
991 }
992
993 /* Set raw attributes on the pty. */
994 tcgetattr(slave_fd, &tty);
995 cfmakeraw(&tty);
996 tcsetattr(slave_fd, TCSAFLUSH, &tty);
997 close(slave_fd);
998
999 chr = g_malloc0(sizeof(CharDriverState));
1000
1001 len = strlen(q_ptsname(master_fd)) + 5;
1002 chr->filename = g_malloc(len);
1003 snprintf(chr->filename, len, "pty:%s", q_ptsname(master_fd));
1004 qemu_opt_set(opts, "path", q_ptsname(master_fd));
1005 fprintf(stderr, "char device redirected to %s\n", q_ptsname(master_fd));
1006
1007 s = g_malloc0(sizeof(PtyCharDriver));
1008 chr->opaque = s;
1009 chr->chr_write = pty_chr_write;
1010 chr->chr_update_read_handler = pty_chr_update_read_handler;
1011 chr->chr_close = pty_chr_close;
1012
1013 s->fd = master_fd;
1014 s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
1015
1016 return chr;
1017 }
1018
1019 static void tty_serial_init(int fd, int speed,
1020 int parity, int data_bits, int stop_bits)
1021 {
1022 struct termios tty;
1023 speed_t spd;
1024
1025 #if 0
1026 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1027 speed, parity, data_bits, stop_bits);
1028 #endif
1029 tcgetattr (fd, &tty);
1030
1031 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1032 speed = speed * 10 / 11;
1033 do {
1034 check_speed(50);
1035 check_speed(75);
1036 check_speed(110);
1037 check_speed(134);
1038 check_speed(150);
1039 check_speed(200);
1040 check_speed(300);
1041 check_speed(600);
1042 check_speed(1200);
1043 check_speed(1800);
1044 check_speed(2400);
1045 check_speed(4800);
1046 check_speed(9600);
1047 check_speed(19200);
1048 check_speed(38400);
1049 /* Non-Posix values follow. They may be unsupported on some systems. */
1050 check_speed(57600);
1051 check_speed(115200);
1052 #ifdef B230400
1053 check_speed(230400);
1054 #endif
1055 #ifdef B460800
1056 check_speed(460800);
1057 #endif
1058 #ifdef B500000
1059 check_speed(500000);
1060 #endif
1061 #ifdef B576000
1062 check_speed(576000);
1063 #endif
1064 #ifdef B921600
1065 check_speed(921600);
1066 #endif
1067 #ifdef B1000000
1068 check_speed(1000000);
1069 #endif
1070 #ifdef B1152000
1071 check_speed(1152000);
1072 #endif
1073 #ifdef B1500000
1074 check_speed(1500000);
1075 #endif
1076 #ifdef B2000000
1077 check_speed(2000000);
1078 #endif
1079 #ifdef B2500000
1080 check_speed(2500000);
1081 #endif
1082 #ifdef B3000000
1083 check_speed(3000000);
1084 #endif
1085 #ifdef B3500000
1086 check_speed(3500000);
1087 #endif
1088 #ifdef B4000000
1089 check_speed(4000000);
1090 #endif
1091 spd = B115200;
1092 } while (0);
1093
1094 cfsetispeed(&tty, spd);
1095 cfsetospeed(&tty, spd);
1096
1097 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1098 |INLCR|IGNCR|ICRNL|IXON);
1099 tty.c_oflag |= OPOST;
1100 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1101 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1102 switch(data_bits) {
1103 default:
1104 case 8:
1105 tty.c_cflag |= CS8;
1106 break;
1107 case 7:
1108 tty.c_cflag |= CS7;
1109 break;
1110 case 6:
1111 tty.c_cflag |= CS6;
1112 break;
1113 case 5:
1114 tty.c_cflag |= CS5;
1115 break;
1116 }
1117 switch(parity) {
1118 default:
1119 case 'N':
1120 break;
1121 case 'E':
1122 tty.c_cflag |= PARENB;
1123 break;
1124 case 'O':
1125 tty.c_cflag |= PARENB | PARODD;
1126 break;
1127 }
1128 if (stop_bits == 2)
1129 tty.c_cflag |= CSTOPB;
1130
1131 tcsetattr (fd, TCSANOW, &tty);
1132 }
1133
1134 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1135 {
1136 FDCharDriver *s = chr->opaque;
1137
1138 switch(cmd) {
1139 case CHR_IOCTL_SERIAL_SET_PARAMS:
1140 {
1141 QEMUSerialSetParams *ssp = arg;
1142 tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
1143 ssp->data_bits, ssp->stop_bits);
1144 }
1145 break;
1146 case CHR_IOCTL_SERIAL_SET_BREAK:
1147 {
1148 int enable = *(int *)arg;
1149 if (enable)
1150 tcsendbreak(s->fd_in, 1);
1151 }
1152 break;
1153 case CHR_IOCTL_SERIAL_GET_TIOCM:
1154 {
1155 int sarg = 0;
1156 int *targ = (int *)arg;
1157 ioctl(s->fd_in, TIOCMGET, &sarg);
1158 *targ = 0;
1159 if (sarg & TIOCM_CTS)
1160 *targ |= CHR_TIOCM_CTS;
1161 if (sarg & TIOCM_CAR)
1162 *targ |= CHR_TIOCM_CAR;
1163 if (sarg & TIOCM_DSR)
1164 *targ |= CHR_TIOCM_DSR;
1165 if (sarg & TIOCM_RI)
1166 *targ |= CHR_TIOCM_RI;
1167 if (sarg & TIOCM_DTR)
1168 *targ |= CHR_TIOCM_DTR;
1169 if (sarg & TIOCM_RTS)
1170 *targ |= CHR_TIOCM_RTS;
1171 }
1172 break;
1173 case CHR_IOCTL_SERIAL_SET_TIOCM:
1174 {
1175 int sarg = *(int *)arg;
1176 int targ = 0;
1177 ioctl(s->fd_in, TIOCMGET, &targ);
1178 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1179 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1180 if (sarg & CHR_TIOCM_CTS)
1181 targ |= TIOCM_CTS;
1182 if (sarg & CHR_TIOCM_CAR)
1183 targ |= TIOCM_CAR;
1184 if (sarg & CHR_TIOCM_DSR)
1185 targ |= TIOCM_DSR;
1186 if (sarg & CHR_TIOCM_RI)
1187 targ |= TIOCM_RI;
1188 if (sarg & CHR_TIOCM_DTR)
1189 targ |= TIOCM_DTR;
1190 if (sarg & CHR_TIOCM_RTS)
1191 targ |= TIOCM_RTS;
1192 ioctl(s->fd_in, TIOCMSET, &targ);
1193 }
1194 break;
1195 default:
1196 return -ENOTSUP;
1197 }
1198 return 0;
1199 }
1200
1201 static void qemu_chr_close_tty(CharDriverState *chr)
1202 {
1203 FDCharDriver *s = chr->opaque;
1204 int fd = -1;
1205
1206 if (s) {
1207 fd = s->fd_in;
1208 }
1209
1210 fd_chr_close(chr);
1211
1212 if (fd >= 0) {
1213 close(fd);
1214 }
1215 }
1216
1217 static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1218 {
1219 const char *filename = qemu_opt_get(opts, "path");
1220 CharDriverState *chr;
1221 int fd;
1222
1223 TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK));
1224 if (fd < 0) {
1225 return NULL;
1226 }
1227 tty_serial_init(fd, 115200, 'N', 8, 1);
1228 chr = qemu_chr_open_fd(fd, fd);
1229 if (!chr) {
1230 close(fd);
1231 return NULL;
1232 }
1233 chr->chr_ioctl = tty_serial_ioctl;
1234 chr->chr_close = qemu_chr_close_tty;
1235 return chr;
1236 }
1237 #else /* ! __linux__ && ! __sun__ */
1238 static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1239 {
1240 return NULL;
1241 }
1242 #endif /* __linux__ || __sun__ */
1243
1244 #if defined(__linux__)
1245 typedef struct {
1246 int fd;
1247 int mode;
1248 } ParallelCharDriver;
1249
1250 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1251 {
1252 if (s->mode != mode) {
1253 int m = mode;
1254 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1255 return 0;
1256 s->mode = mode;
1257 }
1258 return 1;
1259 }
1260
1261 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1262 {
1263 ParallelCharDriver *drv = chr->opaque;
1264 int fd = drv->fd;
1265 uint8_t b;
1266
1267 switch(cmd) {
1268 case CHR_IOCTL_PP_READ_DATA:
1269 if (ioctl(fd, PPRDATA, &b) < 0)
1270 return -ENOTSUP;
1271 *(uint8_t *)arg = b;
1272 break;
1273 case CHR_IOCTL_PP_WRITE_DATA:
1274 b = *(uint8_t *)arg;
1275 if (ioctl(fd, PPWDATA, &b) < 0)
1276 return -ENOTSUP;
1277 break;
1278 case CHR_IOCTL_PP_READ_CONTROL:
1279 if (ioctl(fd, PPRCONTROL, &b) < 0)
1280 return -ENOTSUP;
1281 /* Linux gives only the lowest bits, and no way to know data
1282 direction! For better compatibility set the fixed upper
1283 bits. */
1284 *(uint8_t *)arg = b | 0xc0;
1285 break;
1286 case CHR_IOCTL_PP_WRITE_CONTROL:
1287 b = *(uint8_t *)arg;
1288 if (ioctl(fd, PPWCONTROL, &b) < 0)
1289 return -ENOTSUP;
1290 break;
1291 case CHR_IOCTL_PP_READ_STATUS:
1292 if (ioctl(fd, PPRSTATUS, &b) < 0)
1293 return -ENOTSUP;
1294 *(uint8_t *)arg = b;
1295 break;
1296 case CHR_IOCTL_PP_DATA_DIR:
1297 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1298 return -ENOTSUP;
1299 break;
1300 case CHR_IOCTL_PP_EPP_READ_ADDR:
1301 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1302 struct ParallelIOArg *parg = arg;
1303 int n = read(fd, parg->buffer, parg->count);
1304 if (n != parg->count) {
1305 return -EIO;
1306 }
1307 }
1308 break;
1309 case CHR_IOCTL_PP_EPP_READ:
1310 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1311 struct ParallelIOArg *parg = arg;
1312 int n = read(fd, parg->buffer, parg->count);
1313 if (n != parg->count) {
1314 return -EIO;
1315 }
1316 }
1317 break;
1318 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1319 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1320 struct ParallelIOArg *parg = arg;
1321 int n = write(fd, parg->buffer, parg->count);
1322 if (n != parg->count) {
1323 return -EIO;
1324 }
1325 }
1326 break;
1327 case CHR_IOCTL_PP_EPP_WRITE:
1328 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1329 struct ParallelIOArg *parg = arg;
1330 int n = write(fd, parg->buffer, parg->count);
1331 if (n != parg->count) {
1332 return -EIO;
1333 }
1334 }
1335 break;
1336 default:
1337 return -ENOTSUP;
1338 }
1339 return 0;
1340 }
1341
1342 static void pp_close(CharDriverState *chr)
1343 {
1344 ParallelCharDriver *drv = chr->opaque;
1345 int fd = drv->fd;
1346
1347 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1348 ioctl(fd, PPRELEASE);
1349 close(fd);
1350 g_free(drv);
1351 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1352 }
1353
1354 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1355 {
1356 const char *filename = qemu_opt_get(opts, "path");
1357 CharDriverState *chr;
1358 ParallelCharDriver *drv;
1359 int fd;
1360
1361 TFR(fd = qemu_open(filename, O_RDWR));
1362 if (fd < 0) {
1363 return NULL;
1364 }
1365
1366 if (ioctl(fd, PPCLAIM) < 0) {
1367 close(fd);
1368 return NULL;
1369 }
1370
1371 drv = g_malloc0(sizeof(ParallelCharDriver));
1372 drv->fd = fd;
1373 drv->mode = IEEE1284_MODE_COMPAT;
1374
1375 chr = g_malloc0(sizeof(CharDriverState));
1376 chr->chr_write = null_chr_write;
1377 chr->chr_ioctl = pp_ioctl;
1378 chr->chr_close = pp_close;
1379 chr->opaque = drv;
1380
1381 qemu_chr_generic_open(chr);
1382
1383 return chr;
1384 }
1385 #endif /* __linux__ */
1386
1387 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1388 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1389 {
1390 int fd = (int)(intptr_t)chr->opaque;
1391 uint8_t b;
1392
1393 switch(cmd) {
1394 case CHR_IOCTL_PP_READ_DATA:
1395 if (ioctl(fd, PPIGDATA, &b) < 0)
1396 return -ENOTSUP;
1397 *(uint8_t *)arg = b;
1398 break;
1399 case CHR_IOCTL_PP_WRITE_DATA:
1400 b = *(uint8_t *)arg;
1401 if (ioctl(fd, PPISDATA, &b) < 0)
1402 return -ENOTSUP;
1403 break;
1404 case CHR_IOCTL_PP_READ_CONTROL:
1405 if (ioctl(fd, PPIGCTRL, &b) < 0)
1406 return -ENOTSUP;
1407 *(uint8_t *)arg = b;
1408 break;
1409 case CHR_IOCTL_PP_WRITE_CONTROL:
1410 b = *(uint8_t *)arg;
1411 if (ioctl(fd, PPISCTRL, &b) < 0)
1412 return -ENOTSUP;
1413 break;
1414 case CHR_IOCTL_PP_READ_STATUS:
1415 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1416 return -ENOTSUP;
1417 *(uint8_t *)arg = b;
1418 break;
1419 default:
1420 return -ENOTSUP;
1421 }
1422 return 0;
1423 }
1424
1425 static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
1426 {
1427 const char *filename = qemu_opt_get(opts, "path");
1428 CharDriverState *chr;
1429 int fd;
1430
1431 fd = qemu_open(filename, O_RDWR);
1432 if (fd < 0) {
1433 return NULL;
1434 }
1435
1436 chr = g_malloc0(sizeof(CharDriverState));
1437 chr->opaque = (void *)(intptr_t)fd;
1438 chr->chr_write = null_chr_write;
1439 chr->chr_ioctl = pp_ioctl;
1440 return chr;
1441 }
1442 #endif
1443
1444 #else /* _WIN32 */
1445
1446 static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];
1447
1448 typedef struct {
1449 int max_size;
1450 HANDLE hcom, hrecv, hsend;
1451 OVERLAPPED orecv, osend;
1452 BOOL fpipe;
1453 DWORD len;
1454 } WinCharState;
1455
1456 typedef struct {
1457 HANDLE hStdIn;
1458 HANDLE hInputReadyEvent;
1459 HANDLE hInputDoneEvent;
1460 HANDLE hInputThread;
1461 uint8_t win_stdio_buf;
1462 } WinStdioCharState;
1463
1464 #define NSENDBUF 2048
1465 #define NRECVBUF 2048
1466 #define MAXCONNECT 1
1467 #define NTIMEOUT 5000
1468
1469 static int win_chr_poll(void *opaque);
1470 static int win_chr_pipe_poll(void *opaque);
1471
1472 static void win_chr_close(CharDriverState *chr)
1473 {
1474 WinCharState *s = chr->opaque;
1475
1476 if (s->hsend) {
1477 CloseHandle(s->hsend);
1478 s->hsend = NULL;
1479 }
1480 if (s->hrecv) {
1481 CloseHandle(s->hrecv);
1482 s->hrecv = NULL;
1483 }
1484 if (s->hcom) {
1485 CloseHandle(s->hcom);
1486 s->hcom = NULL;
1487 }
1488 if (s->fpipe)
1489 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1490 else
1491 qemu_del_polling_cb(win_chr_poll, chr);
1492
1493 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1494 }
1495
1496 static int win_chr_init(CharDriverState *chr, const char *filename)
1497 {
1498 WinCharState *s = chr->opaque;
1499 COMMCONFIG comcfg;
1500 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1501 COMSTAT comstat;
1502 DWORD size;
1503 DWORD err;
1504
1505 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1506 if (!s->hsend) {
1507 fprintf(stderr, "Failed CreateEvent\n");
1508 goto fail;
1509 }
1510 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1511 if (!s->hrecv) {
1512 fprintf(stderr, "Failed CreateEvent\n");
1513 goto fail;
1514 }
1515
1516 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1517 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1518 if (s->hcom == INVALID_HANDLE_VALUE) {
1519 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1520 s->hcom = NULL;
1521 goto fail;
1522 }
1523
1524 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1525 fprintf(stderr, "Failed SetupComm\n");
1526 goto fail;
1527 }
1528
1529 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1530 size = sizeof(COMMCONFIG);
1531 GetDefaultCommConfig(filename, &comcfg, &size);
1532 comcfg.dcb.DCBlength = sizeof(DCB);
1533 CommConfigDialog(filename, NULL, &comcfg);
1534
1535 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1536 fprintf(stderr, "Failed SetCommState\n");
1537 goto fail;
1538 }
1539
1540 if (!SetCommMask(s->hcom, EV_ERR)) {
1541 fprintf(stderr, "Failed SetCommMask\n");
1542 goto fail;
1543 }
1544
1545 cto.ReadIntervalTimeout = MAXDWORD;
1546 if (!SetCommTimeouts(s->hcom, &cto)) {
1547 fprintf(stderr, "Failed SetCommTimeouts\n");
1548 goto fail;
1549 }
1550
1551 if (!ClearCommError(s->hcom, &err, &comstat)) {
1552 fprintf(stderr, "Failed ClearCommError\n");
1553 goto fail;
1554 }
1555 qemu_add_polling_cb(win_chr_poll, chr);
1556 return 0;
1557
1558 fail:
1559 win_chr_close(chr);
1560 return -1;
1561 }
1562
1563 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1564 {
1565 WinCharState *s = chr->opaque;
1566 DWORD len, ret, size, err;
1567
1568 len = len1;
1569 ZeroMemory(&s->osend, sizeof(s->osend));
1570 s->osend.hEvent = s->hsend;
1571 while (len > 0) {
1572 if (s->hsend)
1573 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1574 else
1575 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1576 if (!ret) {
1577 err = GetLastError();
1578 if (err == ERROR_IO_PENDING) {
1579 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1580 if (ret) {
1581 buf += size;
1582 len -= size;
1583 } else {
1584 break;
1585 }
1586 } else {
1587 break;
1588 }
1589 } else {
1590 buf += size;
1591 len -= size;
1592 }
1593 }
1594 return len1 - len;
1595 }
1596
1597 static int win_chr_read_poll(CharDriverState *chr)
1598 {
1599 WinCharState *s = chr->opaque;
1600
1601 s->max_size = qemu_chr_be_can_write(chr);
1602 return s->max_size;
1603 }
1604
1605 static void win_chr_readfile(CharDriverState *chr)
1606 {
1607 WinCharState *s = chr->opaque;
1608 int ret, err;
1609 uint8_t buf[READ_BUF_LEN];
1610 DWORD size;
1611
1612 ZeroMemory(&s->orecv, sizeof(s->orecv));
1613 s->orecv.hEvent = s->hrecv;
1614 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1615 if (!ret) {
1616 err = GetLastError();
1617 if (err == ERROR_IO_PENDING) {
1618 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1619 }
1620 }
1621
1622 if (size > 0) {
1623 qemu_chr_be_write(chr, buf, size);
1624 }
1625 }
1626
1627 static void win_chr_read(CharDriverState *chr)
1628 {
1629 WinCharState *s = chr->opaque;
1630
1631 if (s->len > s->max_size)
1632 s->len = s->max_size;
1633 if (s->len == 0)
1634 return;
1635
1636 win_chr_readfile(chr);
1637 }
1638
1639 static int win_chr_poll(void *opaque)
1640 {
1641 CharDriverState *chr = opaque;
1642 WinCharState *s = chr->opaque;
1643 COMSTAT status;
1644 DWORD comerr;
1645
1646 ClearCommError(s->hcom, &comerr, &status);
1647 if (status.cbInQue > 0) {
1648 s->len = status.cbInQue;
1649 win_chr_read_poll(chr);
1650 win_chr_read(chr);
1651 return 1;
1652 }
1653 return 0;
1654 }
1655
1656 static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1657 {
1658 const char *filename = qemu_opt_get(opts, "path");
1659 CharDriverState *chr;
1660 WinCharState *s;
1661
1662 chr = g_malloc0(sizeof(CharDriverState));
1663 s = g_malloc0(sizeof(WinCharState));
1664 chr->opaque = s;
1665 chr->chr_write = win_chr_write;
1666 chr->chr_close = win_chr_close;
1667
1668 if (win_chr_init(chr, filename) < 0) {
1669 g_free(s);
1670 g_free(chr);
1671 return NULL;
1672 }
1673 qemu_chr_generic_open(chr);
1674 return chr;
1675 }
1676
1677 static int win_chr_pipe_poll(void *opaque)
1678 {
1679 CharDriverState *chr = opaque;
1680 WinCharState *s = chr->opaque;
1681 DWORD size;
1682
1683 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1684 if (size > 0) {
1685 s->len = size;
1686 win_chr_read_poll(chr);
1687 win_chr_read(chr);
1688 return 1;
1689 }
1690 return 0;
1691 }
1692
1693 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1694 {
1695 WinCharState *s = chr->opaque;
1696 OVERLAPPED ov;
1697 int ret;
1698 DWORD size;
1699 char openname[256];
1700
1701 s->fpipe = TRUE;
1702
1703 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1704 if (!s->hsend) {
1705 fprintf(stderr, "Failed CreateEvent\n");
1706 goto fail;
1707 }
1708 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1709 if (!s->hrecv) {
1710 fprintf(stderr, "Failed CreateEvent\n");
1711 goto fail;
1712 }
1713
1714 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1715 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1716 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1717 PIPE_WAIT,
1718 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1719 if (s->hcom == INVALID_HANDLE_VALUE) {
1720 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1721 s->hcom = NULL;
1722 goto fail;
1723 }
1724
1725 ZeroMemory(&ov, sizeof(ov));
1726 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1727 ret = ConnectNamedPipe(s->hcom, &ov);
1728 if (ret) {
1729 fprintf(stderr, "Failed ConnectNamedPipe\n");
1730 goto fail;
1731 }
1732
1733 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1734 if (!ret) {
1735 fprintf(stderr, "Failed GetOverlappedResult\n");
1736 if (ov.hEvent) {
1737 CloseHandle(ov.hEvent);
1738 ov.hEvent = NULL;
1739 }
1740 goto fail;
1741 }
1742
1743 if (ov.hEvent) {
1744 CloseHandle(ov.hEvent);
1745 ov.hEvent = NULL;
1746 }
1747 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1748 return 0;
1749
1750 fail:
1751 win_chr_close(chr);
1752 return -1;
1753 }
1754
1755
1756 static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1757 {
1758 const char *filename = qemu_opt_get(opts, "path");
1759 CharDriverState *chr;
1760 WinCharState *s;
1761
1762 chr = g_malloc0(sizeof(CharDriverState));
1763 s = g_malloc0(sizeof(WinCharState));
1764 chr->opaque = s;
1765 chr->chr_write = win_chr_write;
1766 chr->chr_close = win_chr_close;
1767
1768 if (win_chr_pipe_init(chr, filename) < 0) {
1769 g_free(s);
1770 g_free(chr);
1771 return NULL;
1772 }
1773 qemu_chr_generic_open(chr);
1774 return chr;
1775 }
1776
1777 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1778 {
1779 CharDriverState *chr;
1780 WinCharState *s;
1781
1782 chr = g_malloc0(sizeof(CharDriverState));
1783 s = g_malloc0(sizeof(WinCharState));
1784 s->hcom = fd_out;
1785 chr->opaque = s;
1786 chr->chr_write = win_chr_write;
1787 qemu_chr_generic_open(chr);
1788 return chr;
1789 }
1790
1791 static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1792 {
1793 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1794 }
1795
1796 static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1797 {
1798 const char *file_out = qemu_opt_get(opts, "path");
1799 HANDLE fd_out;
1800
1801 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1802 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1803 if (fd_out == INVALID_HANDLE_VALUE) {
1804 return NULL;
1805 }
1806
1807 return qemu_chr_open_win_file(fd_out);
1808 }
1809
1810 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1811 {
1812 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1813 DWORD dwSize;
1814 int len1;
1815
1816 len1 = len;
1817
1818 while (len1 > 0) {
1819 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1820 break;
1821 }
1822 buf += dwSize;
1823 len1 -= dwSize;
1824 }
1825
1826 return len - len1;
1827 }
1828
1829 static void win_stdio_wait_func(void *opaque)
1830 {
1831 CharDriverState *chr = opaque;
1832 WinStdioCharState *stdio = chr->opaque;
1833 INPUT_RECORD buf[4];
1834 int ret;
1835 DWORD dwSize;
1836 int i;
1837
1838 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1839 &dwSize);
1840
1841 if (!ret) {
1842 /* Avoid error storm */
1843 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1844 return;
1845 }
1846
1847 for (i = 0; i < dwSize; i++) {
1848 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
1849
1850 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
1851 int j;
1852 if (kev->uChar.AsciiChar != 0) {
1853 for (j = 0; j < kev->wRepeatCount; j++) {
1854 if (qemu_chr_be_can_write(chr)) {
1855 uint8_t c = kev->uChar.AsciiChar;
1856 qemu_chr_be_write(chr, &c, 1);
1857 }
1858 }
1859 }
1860 }
1861 }
1862 }
1863
1864 static DWORD WINAPI win_stdio_thread(LPVOID param)
1865 {
1866 CharDriverState *chr = param;
1867 WinStdioCharState *stdio = chr->opaque;
1868 int ret;
1869 DWORD dwSize;
1870
1871 while (1) {
1872
1873 /* Wait for one byte */
1874 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
1875
1876 /* Exit in case of error, continue if nothing read */
1877 if (!ret) {
1878 break;
1879 }
1880 if (!dwSize) {
1881 continue;
1882 }
1883
1884 /* Some terminal emulator returns \r\n for Enter, just pass \n */
1885 if (stdio->win_stdio_buf == '\r') {
1886 continue;
1887 }
1888
1889 /* Signal the main thread and wait until the byte was eaten */
1890 if (!SetEvent(stdio->hInputReadyEvent)) {
1891 break;
1892 }
1893 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
1894 != WAIT_OBJECT_0) {
1895 break;
1896 }
1897 }
1898
1899 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
1900 return 0;
1901 }
1902
1903 static void win_stdio_thread_wait_func(void *opaque)
1904 {
1905 CharDriverState *chr = opaque;
1906 WinStdioCharState *stdio = chr->opaque;
1907
1908 if (qemu_chr_be_can_write(chr)) {
1909 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
1910 }
1911
1912 SetEvent(stdio->hInputDoneEvent);
1913 }
1914
1915 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
1916 {
1917 WinStdioCharState *stdio = chr->opaque;
1918 DWORD dwMode = 0;
1919
1920 GetConsoleMode(stdio->hStdIn, &dwMode);
1921
1922 if (echo) {
1923 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
1924 } else {
1925 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
1926 }
1927 }
1928
1929 static void win_stdio_close(CharDriverState *chr)
1930 {
1931 WinStdioCharState *stdio = chr->opaque;
1932
1933 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
1934 CloseHandle(stdio->hInputReadyEvent);
1935 }
1936 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
1937 CloseHandle(stdio->hInputDoneEvent);
1938 }
1939 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
1940 TerminateThread(stdio->hInputThread, 0);
1941 }
1942
1943 g_free(chr->opaque);
1944 g_free(chr);
1945 stdio_nb_clients--;
1946 }
1947
1948 static CharDriverState *qemu_chr_open_win_stdio(QemuOpts *opts)
1949 {
1950 CharDriverState *chr;
1951 WinStdioCharState *stdio;
1952 DWORD dwMode;
1953 int is_console = 0;
1954
1955 if (stdio_nb_clients >= STDIO_MAX_CLIENTS
1956 || ((display_type != DT_NOGRAPHIC) && (stdio_nb_clients != 0))) {
1957 return NULL;
1958 }
1959
1960 chr = g_malloc0(sizeof(CharDriverState));
1961 stdio = g_malloc0(sizeof(WinStdioCharState));
1962
1963 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
1964 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
1965 fprintf(stderr, "cannot open stdio: invalid handle\n");
1966 exit(1);
1967 }
1968
1969 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
1970
1971 chr->opaque = stdio;
1972 chr->chr_write = win_stdio_write;
1973 chr->chr_close = win_stdio_close;
1974
1975 if (stdio_nb_clients == 0) {
1976 if (is_console) {
1977 if (qemu_add_wait_object(stdio->hStdIn,
1978 win_stdio_wait_func, chr)) {
1979 fprintf(stderr, "qemu_add_wait_object: failed\n");
1980 }
1981 } else {
1982 DWORD dwId;
1983
1984 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
1985 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
1986 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
1987 chr, 0, &dwId);
1988
1989 if (stdio->hInputThread == INVALID_HANDLE_VALUE
1990 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
1991 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
1992 fprintf(stderr, "cannot create stdio thread or event\n");
1993 exit(1);
1994 }
1995 if (qemu_add_wait_object(stdio->hInputReadyEvent,
1996 win_stdio_thread_wait_func, chr)) {
1997 fprintf(stderr, "qemu_add_wait_object: failed\n");
1998 }
1999 }
2000 }
2001
2002 dwMode |= ENABLE_LINE_INPUT;
2003
2004 stdio_clients[stdio_nb_clients++] = chr;
2005 if (stdio_nb_clients == 1 && is_console) {
2006 /* set the terminal in raw mode */
2007 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2008 dwMode |= ENABLE_PROCESSED_INPUT;
2009 }
2010
2011 SetConsoleMode(stdio->hStdIn, dwMode);
2012
2013 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2014 qemu_chr_fe_set_echo(chr, false);
2015
2016 return chr;
2017 }
2018 #endif /* !_WIN32 */
2019
2020 /***********************************************************/
2021 /* UDP Net console */
2022
2023 typedef struct {
2024 int fd;
2025 uint8_t buf[READ_BUF_LEN];
2026 int bufcnt;
2027 int bufptr;
2028 int max_size;
2029 } NetCharDriver;
2030
2031 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2032 {
2033 NetCharDriver *s = chr->opaque;
2034
2035 return send(s->fd, (const void *)buf, len, 0);
2036 }
2037
2038 static int udp_chr_read_poll(void *opaque)
2039 {
2040 CharDriverState *chr = opaque;
2041 NetCharDriver *s = chr->opaque;
2042
2043 s->max_size = qemu_chr_be_can_write(chr);
2044
2045 /* If there were any stray characters in the queue process them
2046 * first
2047 */
2048 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2049 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2050 s->bufptr++;
2051 s->max_size = qemu_chr_be_can_write(chr);
2052 }
2053 return s->max_size;
2054 }
2055
2056 static void udp_chr_read(void *opaque)
2057 {
2058 CharDriverState *chr = opaque;
2059 NetCharDriver *s = chr->opaque;
2060
2061 if (s->max_size == 0)
2062 return;
2063 s->bufcnt = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0);
2064 s->bufptr = s->bufcnt;
2065 if (s->bufcnt <= 0)
2066 return;
2067
2068 s->bufptr = 0;
2069 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2070 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2071 s->bufptr++;
2072 s->max_size = qemu_chr_be_can_write(chr);
2073 }
2074 }
2075
2076 static void udp_chr_update_read_handler(CharDriverState *chr)
2077 {
2078 NetCharDriver *s = chr->opaque;
2079
2080 if (s->fd >= 0) {
2081 qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
2082 udp_chr_read, NULL, chr);
2083 }
2084 }
2085
2086 static void udp_chr_close(CharDriverState *chr)
2087 {
2088 NetCharDriver *s = chr->opaque;
2089 if (s->fd >= 0) {
2090 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2091 closesocket(s->fd);
2092 }
2093 g_free(s);
2094 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2095 }
2096
2097 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2098 {
2099 CharDriverState *chr = NULL;
2100 NetCharDriver *s = NULL;
2101 int fd = -1;
2102
2103 chr = g_malloc0(sizeof(CharDriverState));
2104 s = g_malloc0(sizeof(NetCharDriver));
2105
2106 fd = inet_dgram_opts(opts);
2107 if (fd < 0) {
2108 fprintf(stderr, "inet_dgram_opts failed\n");
2109 goto return_err;
2110 }
2111
2112 s->fd = fd;
2113 s->bufcnt = 0;
2114 s->bufptr = 0;
2115 chr->opaque = s;
2116 chr->chr_write = udp_chr_write;
2117 chr->chr_update_read_handler = udp_chr_update_read_handler;
2118 chr->chr_close = udp_chr_close;
2119 return chr;
2120
2121 return_err:
2122 g_free(chr);
2123 g_free(s);
2124 if (fd >= 0) {
2125 closesocket(fd);
2126 }
2127 return NULL;
2128 }
2129
2130 /***********************************************************/
2131 /* TCP Net console */
2132
2133 typedef struct {
2134 int fd, listen_fd;
2135 int connected;
2136 int max_size;
2137 int do_telnetopt;
2138 int do_nodelay;
2139 int is_unix;
2140 int msgfd;
2141 } TCPCharDriver;
2142
2143 static void tcp_chr_accept(void *opaque);
2144
2145 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2146 {
2147 TCPCharDriver *s = chr->opaque;
2148 if (s->connected) {
2149 return send_all(s->fd, buf, len);
2150 } else {
2151 /* XXX: indicate an error ? */
2152 return len;
2153 }
2154 }
2155
2156 static int tcp_chr_read_poll(void *opaque)
2157 {
2158 CharDriverState *chr = opaque;
2159 TCPCharDriver *s = chr->opaque;
2160 if (!s->connected)
2161 return 0;
2162 s->max_size = qemu_chr_be_can_write(chr);
2163 return s->max_size;
2164 }
2165
2166 #define IAC 255
2167 #define IAC_BREAK 243
2168 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2169 TCPCharDriver *s,
2170 uint8_t *buf, int *size)
2171 {
2172 /* Handle any telnet client's basic IAC options to satisfy char by
2173 * char mode with no echo. All IAC options will be removed from
2174 * the buf and the do_telnetopt variable will be used to track the
2175 * state of the width of the IAC information.
2176 *
2177 * IAC commands come in sets of 3 bytes with the exception of the
2178 * "IAC BREAK" command and the double IAC.
2179 */
2180
2181 int i;
2182 int j = 0;
2183
2184 for (i = 0; i < *size; i++) {
2185 if (s->do_telnetopt > 1) {
2186 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2187 /* Double IAC means send an IAC */
2188 if (j != i)
2189 buf[j] = buf[i];
2190 j++;
2191 s->do_telnetopt = 1;
2192 } else {
2193 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2194 /* Handle IAC break commands by sending a serial break */
2195 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2196 s->do_telnetopt++;
2197 }
2198 s->do_telnetopt++;
2199 }
2200 if (s->do_telnetopt >= 4) {
2201 s->do_telnetopt = 1;
2202 }
2203 } else {
2204 if ((unsigned char)buf[i] == IAC) {
2205 s->do_telnetopt = 2;
2206 } else {
2207 if (j != i)
2208 buf[j] = buf[i];
2209 j++;
2210 }
2211 }
2212 }
2213 *size = j;
2214 }
2215
2216 static int tcp_get_msgfd(CharDriverState *chr)
2217 {
2218 TCPCharDriver *s = chr->opaque;
2219 int fd = s->msgfd;
2220 s->msgfd = -1;
2221 return fd;
2222 }
2223
2224 #ifndef _WIN32
2225 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2226 {
2227 TCPCharDriver *s = chr->opaque;
2228 struct cmsghdr *cmsg;
2229
2230 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2231 int fd;
2232
2233 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2234 cmsg->cmsg_level != SOL_SOCKET ||
2235 cmsg->cmsg_type != SCM_RIGHTS)
2236 continue;
2237
2238 fd = *((int *)CMSG_DATA(cmsg));
2239 if (fd < 0)
2240 continue;
2241
2242 if (s->msgfd != -1)
2243 close(s->msgfd);
2244 s->msgfd = fd;
2245 }
2246 }
2247
2248 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2249 {
2250 TCPCharDriver *s = chr->opaque;
2251 struct msghdr msg = { NULL, };
2252 struct iovec iov[1];
2253 union {
2254 struct cmsghdr cmsg;
2255 char control[CMSG_SPACE(sizeof(int))];
2256 } msg_control;
2257 ssize_t ret;
2258
2259 iov[0].iov_base = buf;
2260 iov[0].iov_len = len;
2261
2262 msg.msg_iov = iov;
2263 msg.msg_iovlen = 1;
2264 msg.msg_control = &msg_control;
2265 msg.msg_controllen = sizeof(msg_control);
2266
2267 ret = recvmsg(s->fd, &msg, 0);
2268 if (ret > 0 && s->is_unix)
2269 unix_process_msgfd(chr, &msg);
2270
2271 return ret;
2272 }
2273 #else
2274 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2275 {
2276 TCPCharDriver *s = chr->opaque;
2277 return qemu_recv(s->fd, buf, len, 0);
2278 }
2279 #endif
2280
2281 static void tcp_chr_read(void *opaque)
2282 {
2283 CharDriverState *chr = opaque;
2284 TCPCharDriver *s = chr->opaque;
2285 uint8_t buf[READ_BUF_LEN];
2286 int len, size;
2287
2288 if (!s->connected || s->max_size <= 0)
2289 return;
2290 len = sizeof(buf);
2291 if (len > s->max_size)
2292 len = s->max_size;
2293 size = tcp_chr_recv(chr, (void *)buf, len);
2294 if (size == 0) {
2295 /* connection closed */
2296 s->connected = 0;
2297 if (s->listen_fd >= 0) {
2298 qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
2299 }
2300 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2301 closesocket(s->fd);
2302 s->fd = -1;
2303 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2304 } else if (size > 0) {
2305 if (s->do_telnetopt)
2306 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2307 if (size > 0)
2308 qemu_chr_be_write(chr, buf, size);
2309 }
2310 }
2311
2312 #ifndef _WIN32
2313 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2314 {
2315 return qemu_chr_open_fd(eventfd, eventfd);
2316 }
2317 #endif
2318
2319 static void tcp_chr_connect(void *opaque)
2320 {
2321 CharDriverState *chr = opaque;
2322 TCPCharDriver *s = chr->opaque;
2323
2324 s->connected = 1;
2325 qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
2326 tcp_chr_read, NULL, chr);
2327 qemu_chr_generic_open(chr);
2328 }
2329
2330 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2331 static void tcp_chr_telnet_init(int fd)
2332 {
2333 char buf[3];
2334 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2335 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2336 send(fd, (char *)buf, 3, 0);
2337 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2338 send(fd, (char *)buf, 3, 0);
2339 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2340 send(fd, (char *)buf, 3, 0);
2341 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2342 send(fd, (char *)buf, 3, 0);
2343 }
2344
2345 static void socket_set_nodelay(int fd)
2346 {
2347 int val = 1;
2348 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
2349 }
2350
2351 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2352 {
2353 TCPCharDriver *s = chr->opaque;
2354 if (s->fd != -1)
2355 return -1;
2356
2357 socket_set_nonblock(fd);
2358 if (s->do_nodelay)
2359 socket_set_nodelay(fd);
2360 s->fd = fd;
2361 qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
2362 tcp_chr_connect(chr);
2363
2364 return 0;
2365 }
2366
2367 static void tcp_chr_accept(void *opaque)
2368 {
2369 CharDriverState *chr = opaque;
2370 TCPCharDriver *s = chr->opaque;
2371 struct sockaddr_in saddr;
2372 #ifndef _WIN32
2373 struct sockaddr_un uaddr;
2374 #endif
2375 struct sockaddr *addr;
2376 socklen_t len;
2377 int fd;
2378
2379 for(;;) {
2380 #ifndef _WIN32
2381 if (s->is_unix) {
2382 len = sizeof(uaddr);
2383 addr = (struct sockaddr *)&uaddr;
2384 } else
2385 #endif
2386 {
2387 len = sizeof(saddr);
2388 addr = (struct sockaddr *)&saddr;
2389 }
2390 fd = qemu_accept(s->listen_fd, addr, &len);
2391 if (fd < 0 && errno != EINTR) {
2392 return;
2393 } else if (fd >= 0) {
2394 if (s->do_telnetopt)
2395 tcp_chr_telnet_init(fd);
2396 break;
2397 }
2398 }
2399 if (tcp_chr_add_client(chr, fd) < 0)
2400 close(fd);
2401 }
2402
2403 static void tcp_chr_close(CharDriverState *chr)
2404 {
2405 TCPCharDriver *s = chr->opaque;
2406 if (s->fd >= 0) {
2407 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
2408 closesocket(s->fd);
2409 }
2410 if (s->listen_fd >= 0) {
2411 qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
2412 closesocket(s->listen_fd);
2413 }
2414 g_free(s);
2415 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2416 }
2417
2418 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2419 {
2420 CharDriverState *chr = NULL;
2421 TCPCharDriver *s = NULL;
2422 int fd = -1;
2423 int is_listen;
2424 int is_waitconnect;
2425 int do_nodelay;
2426 int is_unix;
2427 int is_telnet;
2428
2429 is_listen = qemu_opt_get_bool(opts, "server", 0);
2430 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2431 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2432 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2433 is_unix = qemu_opt_get(opts, "path") != NULL;
2434 if (!is_listen)
2435 is_waitconnect = 0;
2436
2437 chr = g_malloc0(sizeof(CharDriverState));
2438 s = g_malloc0(sizeof(TCPCharDriver));
2439
2440 if (is_unix) {
2441 if (is_listen) {
2442 fd = unix_listen_opts(opts);
2443 } else {
2444 fd = unix_connect_opts(opts);
2445 }
2446 } else {
2447 if (is_listen) {
2448 fd = inet_listen_opts(opts, 0);
2449 } else {
2450 fd = inet_connect_opts(opts);
2451 }
2452 }
2453 if (fd < 0) {
2454 goto fail;
2455 }
2456
2457 if (!is_waitconnect)
2458 socket_set_nonblock(fd);
2459
2460 s->connected = 0;
2461 s->fd = -1;
2462 s->listen_fd = -1;
2463 s->msgfd = -1;
2464 s->is_unix = is_unix;
2465 s->do_nodelay = do_nodelay && !is_unix;
2466
2467 chr->opaque = s;
2468 chr->chr_write = tcp_chr_write;
2469 chr->chr_close = tcp_chr_close;
2470 chr->get_msgfd = tcp_get_msgfd;
2471 chr->chr_add_client = tcp_chr_add_client;
2472
2473 if (is_listen) {
2474 s->listen_fd = fd;
2475 qemu_set_fd_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
2476 if (is_telnet)
2477 s->do_telnetopt = 1;
2478
2479 } else {
2480 s->connected = 1;
2481 s->fd = fd;
2482 socket_set_nodelay(fd);
2483 tcp_chr_connect(chr);
2484 }
2485
2486 /* for "info chardev" monitor command */
2487 chr->filename = g_malloc(256);
2488 if (is_unix) {
2489 snprintf(chr->filename, 256, "unix:%s%s",
2490 qemu_opt_get(opts, "path"),
2491 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2492 } else if (is_telnet) {
2493 snprintf(chr->filename, 256, "telnet:%s:%s%s",
2494 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2495 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2496 } else {
2497 snprintf(chr->filename, 256, "tcp:%s:%s%s",
2498 qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
2499 qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
2500 }
2501
2502 if (is_listen && is_waitconnect) {
2503 printf("QEMU waiting for connection on: %s\n",
2504 chr->filename);
2505 tcp_chr_accept(chr);
2506 socket_set_nonblock(s->listen_fd);
2507 }
2508 return chr;
2509
2510 fail:
2511 if (fd >= 0)
2512 closesocket(fd);
2513 g_free(s);
2514 g_free(chr);
2515 return NULL;
2516 }
2517
2518 /***********************************************************/
2519 /* Memory chardev */
2520 typedef struct {
2521 size_t outbuf_size;
2522 size_t outbuf_capacity;
2523 uint8_t *outbuf;
2524 } MemoryDriver;
2525
2526 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2527 {
2528 MemoryDriver *d = chr->opaque;
2529
2530 /* TODO: the QString implementation has the same code, we should
2531 * introduce a generic way to do this in cutils.c */
2532 if (d->outbuf_capacity < d->outbuf_size + len) {
2533 /* grow outbuf */
2534 d->outbuf_capacity += len;
2535 d->outbuf_capacity *= 2;
2536 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2537 }
2538
2539 memcpy(d->outbuf + d->outbuf_size, buf, len);
2540 d->outbuf_size += len;
2541
2542 return len;
2543 }
2544
2545 void qemu_chr_init_mem(CharDriverState *chr)
2546 {
2547 MemoryDriver *d;
2548
2549 d = g_malloc(sizeof(*d));
2550 d->outbuf_size = 0;
2551 d->outbuf_capacity = 4096;
2552 d->outbuf = g_malloc0(d->outbuf_capacity);
2553
2554 memset(chr, 0, sizeof(*chr));
2555 chr->opaque = d;
2556 chr->chr_write = mem_chr_write;
2557 }
2558
2559 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2560 {
2561 MemoryDriver *d = chr->opaque;
2562 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2563 }
2564
2565 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2566 void qemu_chr_close_mem(CharDriverState *chr)
2567 {
2568 MemoryDriver *d = chr->opaque;
2569
2570 g_free(d->outbuf);
2571 g_free(chr->opaque);
2572 chr->opaque = NULL;
2573 chr->chr_write = NULL;
2574 }
2575
2576 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2577 {
2578 const MemoryDriver *d = chr->opaque;
2579 return d->outbuf_size;
2580 }
2581
2582 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2583 {
2584 char host[65], port[33], width[8], height[8];
2585 int pos;
2586 const char *p;
2587 QemuOpts *opts;
2588
2589 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
2590 if (NULL == opts)
2591 return NULL;
2592
2593 if (strstart(filename, "mon:", &p)) {
2594 filename = p;
2595 qemu_opt_set(opts, "mux", "on");
2596 }
2597
2598 if (strcmp(filename, "null") == 0 ||
2599 strcmp(filename, "pty") == 0 ||
2600 strcmp(filename, "msmouse") == 0 ||
2601 strcmp(filename, "braille") == 0 ||
2602 strcmp(filename, "stdio") == 0) {
2603 qemu_opt_set(opts, "backend", filename);
2604 return opts;
2605 }
2606 if (strstart(filename, "vc", &p)) {
2607 qemu_opt_set(opts, "backend", "vc");
2608 if (*p == ':') {
2609 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2610 /* pixels */
2611 qemu_opt_set(opts, "width", width);
2612 qemu_opt_set(opts, "height", height);
2613 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2614 /* chars */
2615 qemu_opt_set(opts, "cols", width);
2616 qemu_opt_set(opts, "rows", height);
2617 } else {
2618 goto fail;
2619 }
2620 }
2621 return opts;
2622 }
2623 if (strcmp(filename, "con:") == 0) {
2624 qemu_opt_set(opts, "backend", "console");
2625 return opts;
2626 }
2627 if (strstart(filename, "COM", NULL)) {
2628 qemu_opt_set(opts, "backend", "serial");
2629 qemu_opt_set(opts, "path", filename);
2630 return opts;
2631 }
2632 if (strstart(filename, "file:", &p)) {
2633 qemu_opt_set(opts, "backend", "file");
2634 qemu_opt_set(opts, "path", p);
2635 return opts;
2636 }
2637 if (strstart(filename, "pipe:", &p)) {
2638 qemu_opt_set(opts, "backend", "pipe");
2639 qemu_opt_set(opts, "path", p);
2640 return opts;
2641 }
2642 if (strstart(filename, "tcp:", &p) ||
2643 strstart(filename, "telnet:", &p)) {
2644 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2645 host[0] = 0;
2646 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
2647 goto fail;
2648 }
2649 qemu_opt_set(opts, "backend", "socket");
2650 qemu_opt_set(opts, "host", host);
2651 qemu_opt_set(opts, "port", port);
2652 if (p[pos] == ',') {
2653 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
2654 goto fail;
2655 }
2656 if (strstart(filename, "telnet:", &p))
2657 qemu_opt_set(opts, "telnet", "on");
2658 return opts;
2659 }
2660 if (strstart(filename, "udp:", &p)) {
2661 qemu_opt_set(opts, "backend", "udp");
2662 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
2663 host[0] = 0;
2664 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
2665 goto fail;
2666 }
2667 }
2668 qemu_opt_set(opts, "host", host);
2669 qemu_opt_set(opts, "port", port);
2670 if (p[pos] == '@') {
2671 p += pos + 1;
2672 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
2673 host[0] = 0;
2674 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
2675 goto fail;
2676 }
2677 }
2678 qemu_opt_set(opts, "localaddr", host);
2679 qemu_opt_set(opts, "localport", port);
2680 }
2681 return opts;
2682 }
2683 if (strstart(filename, "unix:", &p)) {
2684 qemu_opt_set(opts, "backend", "socket");
2685 if (qemu_opts_do_parse(opts, p, "path") != 0)
2686 goto fail;
2687 return opts;
2688 }
2689 if (strstart(filename, "/dev/parport", NULL) ||
2690 strstart(filename, "/dev/ppi", NULL)) {
2691 qemu_opt_set(opts, "backend", "parport");
2692 qemu_opt_set(opts, "path", filename);
2693 return opts;
2694 }
2695 if (strstart(filename, "/dev/", NULL)) {
2696 qemu_opt_set(opts, "backend", "tty");
2697 qemu_opt_set(opts, "path", filename);
2698 return opts;
2699 }
2700
2701 fail:
2702 qemu_opts_del(opts);
2703 return NULL;
2704 }
2705
2706 static const struct {
2707 const char *name;
2708 CharDriverState *(*open)(QemuOpts *opts);
2709 } backend_table[] = {
2710 { .name = "null", .open = qemu_chr_open_null },
2711 { .name = "socket", .open = qemu_chr_open_socket },
2712 { .name = "udp", .open = qemu_chr_open_udp },
2713 { .name = "msmouse", .open = qemu_chr_open_msmouse },
2714 { .name = "vc", .open = text_console_init },
2715 #ifdef _WIN32
2716 { .name = "file", .open = qemu_chr_open_win_file_out },
2717 { .name = "pipe", .open = qemu_chr_open_win_pipe },
2718 { .name = "console", .open = qemu_chr_open_win_con },
2719 { .name = "serial", .open = qemu_chr_open_win },
2720 { .name = "stdio", .open = qemu_chr_open_win_stdio },
2721 #else
2722 { .name = "file", .open = qemu_chr_open_file_out },
2723 { .name = "pipe", .open = qemu_chr_open_pipe },
2724 { .name = "pty", .open = qemu_chr_open_pty },
2725 { .name = "stdio", .open = qemu_chr_open_stdio },
2726 #endif
2727 #ifdef CONFIG_BRLAPI
2728 { .name = "braille", .open = chr_baum_init },
2729 #endif
2730 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
2731 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
2732 || defined(__FreeBSD_kernel__)
2733 { .name = "tty", .open = qemu_chr_open_tty },
2734 #endif
2735 #if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
2736 || defined(__FreeBSD_kernel__)
2737 { .name = "parport", .open = qemu_chr_open_pp },
2738 #endif
2739 #ifdef CONFIG_SPICE
2740 { .name = "spicevmc", .open = qemu_chr_open_spice },
2741 #endif
2742 };
2743
2744 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
2745 void (*init)(struct CharDriverState *s))
2746 {
2747 CharDriverState *chr;
2748 int i;
2749
2750 if (qemu_opts_id(opts) == NULL) {
2751 fprintf(stderr, "chardev: no id specified\n");
2752 return NULL;
2753 }
2754
2755 if (qemu_opt_get(opts, "backend") == NULL) {
2756 fprintf(stderr, "chardev: \"%s\" missing backend\n",
2757 qemu_opts_id(opts));
2758 return NULL;
2759 }
2760 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
2761 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
2762 break;
2763 }
2764 if (i == ARRAY_SIZE(backend_table)) {
2765 fprintf(stderr, "chardev: backend \"%s\" not found\n",
2766 qemu_opt_get(opts, "backend"));
2767 return NULL;
2768 }
2769
2770 chr = backend_table[i].open(opts);
2771 if (!chr) {
2772 fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
2773 qemu_opt_get(opts, "backend"));
2774 return NULL;
2775 }
2776
2777 if (!chr->filename)
2778 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
2779 chr->init = init;
2780 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2781
2782 if (qemu_opt_get_bool(opts, "mux", 0)) {
2783 CharDriverState *base = chr;
2784 int len = strlen(qemu_opts_id(opts)) + 6;
2785 base->label = g_malloc(len);
2786 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
2787 chr = qemu_chr_open_mux(base);
2788 chr->filename = base->filename;
2789 chr->avail_connections = MAX_MUX;
2790 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
2791 } else {
2792 chr->avail_connections = 1;
2793 }
2794 chr->label = g_strdup(qemu_opts_id(opts));
2795 return chr;
2796 }
2797
2798 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
2799 {
2800 const char *p;
2801 CharDriverState *chr;
2802 QemuOpts *opts;
2803
2804 if (strstart(filename, "chardev:", &p)) {
2805 return qemu_chr_find(p);
2806 }
2807
2808 opts = qemu_chr_parse_compat(label, filename);
2809 if (!opts)
2810 return NULL;
2811
2812 chr = qemu_chr_new_from_opts(opts, init);
2813 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
2814 monitor_init(chr, MONITOR_USE_READLINE);
2815 }
2816 qemu_opts_del(opts);
2817 return chr;
2818 }
2819
2820 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
2821 {
2822 if (chr->chr_set_echo) {
2823 chr->chr_set_echo(chr, echo);
2824 }
2825 }
2826
2827 void qemu_chr_fe_open(struct CharDriverState *chr)
2828 {
2829 if (chr->chr_guest_open) {
2830 chr->chr_guest_open(chr);
2831 }
2832 }
2833
2834 void qemu_chr_fe_close(struct CharDriverState *chr)
2835 {
2836 if (chr->chr_guest_close) {
2837 chr->chr_guest_close(chr);
2838 }
2839 }
2840
2841 void qemu_chr_delete(CharDriverState *chr)
2842 {
2843 QTAILQ_REMOVE(&chardevs, chr, next);
2844 if (chr->chr_close)
2845 chr->chr_close(chr);
2846 g_free(chr->filename);
2847 g_free(chr->label);
2848 g_free(chr);
2849 }
2850
2851 ChardevInfoList *qmp_query_chardev(Error **errp)
2852 {
2853 ChardevInfoList *chr_list = NULL;
2854 CharDriverState *chr;
2855
2856 QTAILQ_FOREACH(chr, &chardevs, next) {
2857 ChardevInfoList *info = g_malloc0(sizeof(*info));
2858 info->value = g_malloc0(sizeof(*info->value));
2859 info->value->label = g_strdup(chr->label);
2860 info->value->filename = g_strdup(chr->filename);
2861
2862 info->next = chr_list;
2863 chr_list = info;
2864 }
2865
2866 return chr_list;
2867 }
2868
2869 CharDriverState *qemu_chr_find(const char *name)
2870 {
2871 CharDriverState *chr;
2872
2873 QTAILQ_FOREACH(chr, &chardevs, next) {
2874 if (strcmp(chr->label, name) != 0)
2875 continue;
2876 return chr;
2877 }
2878 return NULL;
2879 }
2880
2881 /* Get a character (serial) device interface. */
2882 CharDriverState *qemu_char_get_next_serial(void)
2883 {
2884 static int next_serial;
2885
2886 /* FIXME: This function needs to go away: use chardev properties! */
2887 return serial_hds[next_serial++];
2888 }
2889
Random patches