]> git.ipfire.org Git - thirdparty/qemu.git/blame - qemu-char.c
projects / thirdparty / qemu.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Update VERSION for 2.0.2 release
[thirdparty/qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 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"
83c9089e 25#include "monitor/monitor.h"
28ecbaee 26#include "ui/console.h"
9c17d615 27#include "sysemu/sysemu.h"
1de7afc9 28#include "qemu/timer.h"
dccfcd0e 29#include "sysemu/char.h"
cf3ebac7 30#include "hw/usb.h"
c5a415a0 31#include "qmp-commands.h"
6f97dba0
AL		 32
33#include <unistd.h>
34#include <fcntl.h>
6f97dba0
AL		 35#include <time.h>
36#include <errno.h>
37#include <sys/time.h>
38#include <zlib.h>
39
40#ifndef _WIN32
41#include <sys/times.h>
42#include <sys/wait.h>
43#include <termios.h>
44#include <sys/mman.h>
45#include <sys/ioctl.h>
24646c7e 46#include <sys/resource.h>
6f97dba0
AL		 47#include <sys/socket.h>
48#include <netinet/in.h>
24646c7e 49#include <net/if.h>
24646c7e 50#include <arpa/inet.h>
6f97dba0
AL		 51#include <dirent.h>
52#include <netdb.h>
53#include <sys/select.h>
71e72a19 54#ifdef CONFIG_BSD
6f97dba0 55#include <sys/stat.h>
3294ce18
MT		 56#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
57#include <dev/ppbus/ppi.h>
58#include <dev/ppbus/ppbconf.h>
c5e97233 59#elif defined(__DragonFly__)
c5e97233
BS		 60#include <dev/misc/ppi/ppi.h>
61#include <bus/ppbus/ppbconf.h>
6f97dba0 62#endif
bbe813a2 63#else
6f97dba0 64#ifdef __linux__
6f97dba0
AL		 65#include <linux/ppdev.h>
66#include <linux/parport.h>
67#endif
68#ifdef __sun__
69#include <sys/stat.h>
70#include <sys/ethernet.h>
71#include <sys/sockio.h>
72#include <netinet/arp.h>
73#include <netinet/in.h>
74#include <netinet/in_systm.h>
75#include <netinet/ip.h>
76#include <netinet/ip_icmp.h> // must come after ip.h
77#include <netinet/udp.h>
78#include <netinet/tcp.h>
6f97dba0
AL		 79#endif
80#endif
81#endif
82
1de7afc9 83#include "qemu/sockets.h"
cbcc6336 84#include "ui/qemu-spice.h"
6f97dba0 85
9bd7854e
AS		 86#define READ_BUF_LEN 4096
87
6f97dba0
AL		 88/***********************************************************/
89/* character device */
90
72cf2d4f
BS		 91static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
92 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 93
a425d23f 94void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 95{
73cdf3f2
AG		 96 /* Keep track if the char device is open */
97 switch (event) {
98 case CHR_EVENT_OPENED:
16665b94 99 s->be_open = 1;
73cdf3f2
AG		 100 break;
101 case CHR_EVENT_CLOSED:
16665b94 102 s->be_open = 0;
73cdf3f2
AG		 103 break;
104 }
105
6f97dba0
AL		 106 if (!s->chr_event)
107 return;
108 s->chr_event(s->handler_opaque, event);
109}
110
fee204fd 111void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 112{
bd5c51ee 113 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 114}
115
2cc6e0a1 116int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0
AL		 117{
118 return s->chr_write(s, buf, len);
119}
120
cd18720a
AL		 121int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
122{
123 int offset = 0;
124 int res;
125
126 while (offset < len) {
127 do {
128 res = s->chr_write(s, buf + offset, len - offset);
129 if (res == -1 && errno == EAGAIN) {
130 g_usleep(100);
131 }
132 } while (res == -1 && errno == EAGAIN);
133
134 if (res == 0) {
135 break;
136 }
137
138 if (res < 0) {
139 return res;
140 }
141
142 offset += res;
143 }
144
145 return offset;
146}
147
41084f1b 148int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 149{
150 if (!s->chr_ioctl)
151 return -ENOTSUP;
152 return s->chr_ioctl(s, cmd, arg);
153}
154
909cda12 155int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 156{
157 if (!s->chr_can_read)
158 return 0;
159 return s->chr_can_read(s->handler_opaque);
160}
161
fa5efccb 162void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 163{
ac310734
SW		 164 if (s->chr_read) {
165 s->chr_read(s->handler_opaque, buf, len);
166 }
6f97dba0
AL		 167}
168
74c0d6f0 169int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059
MM		 170{
171 return s->get_msgfd ? s->get_msgfd(s) : -1;
172}
173
13661089
DB		 174int qemu_chr_add_client(CharDriverState *s, int fd)
175{
176 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
177}
178
6f97dba0
AL		 179void qemu_chr_accept_input(CharDriverState *s)
180{
181 if (s->chr_accept_input)
182 s->chr_accept_input(s);
98c8ee1d 183 qemu_notify_event();
6f97dba0
AL		 184}
185
e7e71b0e 186void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 187{
9bd7854e 188 char buf[READ_BUF_LEN];
6f97dba0
AL		 189 va_list ap;
190 va_start(ap, fmt);
191 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 192 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 193 va_end(ap);
194}
195
386a5a1e
AS		 196static void remove_fd_in_watch(CharDriverState *chr);
197
6f97dba0 198void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 199 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 200 IOReadHandler *fd_read,
201 IOEventHandler *fd_event,
202 void *opaque)
203{
19083228
HG		 204 int fe_open;
205
da7d998b 206 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 207 fe_open = 0;
386a5a1e 208 remove_fd_in_watch(s);
19083228
HG		 209 } else {
210 fe_open = 1;
2d6c1ef4 211 }
6f97dba0
AL		 212 s->chr_can_read = fd_can_read;
213 s->chr_read = fd_read;
214 s->chr_event = fd_event;
215 s->handler_opaque = opaque;
ac1b84dd 216 if (fe_open && s->chr_update_read_handler)
6f97dba0 217 s->chr_update_read_handler(s);
73cdf3f2 218
19083228 219 if (!s->explicit_fe_open) {
8e25daa8 220 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 221 }
222
73cdf3f2
AG		 223 /* We're connecting to an already opened device, so let's make sure we
224 also get the open event */
a59bcd31 225 if (fe_open && s->be_open) {
fee204fd 226 qemu_chr_be_generic_open(s);
73cdf3f2 227 }
6f97dba0
AL		 228}
229
230static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
231{
232 return len;
233}
234
80dca9e6 235static CharDriverState *qemu_chr_open_null(void)
6f97dba0
AL		 236{
237 CharDriverState *chr;
238
7267c094 239 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0 240 chr->chr_write = null_chr_write;
bd5c51ee 241 chr->explicit_be_open = true;
1f51470d 242 return chr;
6f97dba0
AL		 243}
244
245/* MUX driver for serial I/O splitting */
6f97dba0
AL		 246#define MAX_MUX 4
247#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
248#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
249typedef struct {
7b27a769 250 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 251 IOReadHandler *chr_read[MAX_MUX];
252 IOEventHandler *chr_event[MAX_MUX];
253 void *ext_opaque[MAX_MUX];
254 CharDriverState *drv;
799f1f23 255 int focus;
6f97dba0
AL		 256 int mux_cnt;
257 int term_got_escape;
258 int max_size;
a80bf99f
AL		 259 /* Intermediate input buffer allows to catch escape sequences even if the
260 currently active device is not accepting any input - but only until it
261 is full as well. */
262 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
263 int prod[MAX_MUX];
264 int cons[MAX_MUX];
2d22959d 265 int timestamps;
4ab312f7 266 int linestart;
2d22959d 267 int64_t timestamps_start;
6f97dba0
AL		 268} MuxDriver;
269
270
271static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
272{
273 MuxDriver *d = chr->opaque;
274 int ret;
2d22959d 275 if (!d->timestamps) {
6f97dba0
AL		 276 ret = d->drv->chr_write(d->drv, buf, len);
277 } else {
278 int i;
279
280 ret = 0;
4ab312f7
JK		 281 for (i = 0; i < len; i++) {
282 if (d->linestart) {
6f97dba0
AL		 283 char buf1[64];
284 int64_t ti;
285 int secs;
286
bc72ad67 287 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 288 if (d->timestamps_start == -1)
289 d->timestamps_start = ti;
290 ti -= d->timestamps_start;
a4bb1db8 291 secs = ti / 1000;
6f97dba0
AL		 292 snprintf(buf1, sizeof(buf1),
293 "[%02d:%02d:%02d.%03d] ",
294 secs / 3600,
295 (secs / 60) % 60,
296 secs % 60,
a4bb1db8 297 (int)(ti % 1000));
6f97dba0 298 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 299 d->linestart = 0;
300 }
301 ret += d->drv->chr_write(d->drv, buf+i, 1);
302 if (buf[i] == '\n') {
303 d->linestart = 1;
6f97dba0
AL		 304 }
305 }
306 }
307 return ret;
308}
309
310static const char * const mux_help[] = {
311 "% h print this help\n\r",
312 "% x exit emulator\n\r",
313 "% s save disk data back to file (if -snapshot)\n\r",
314 "% t toggle console timestamps\n\r"
315 "% b send break (magic sysrq)\n\r",
316 "% c switch between console and monitor\n\r",
317 "% % sends %\n\r",
318 NULL
319};
320
321int term_escape_char = 0x01; /* ctrl-a is used for escape */
322static void mux_print_help(CharDriverState *chr)
323{
324 int i, j;
325 char ebuf[15] = "Escape-Char";
326 char cbuf[50] = "\n\r";
327
328 if (term_escape_char > 0 && term_escape_char < 26) {
329 snprintf(cbuf, sizeof(cbuf), "\n\r");
330 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
331 } else {
332 snprintf(cbuf, sizeof(cbuf),
333 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
334 term_escape_char);
335 }
336 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
337 for (i = 0; mux_help[i] != NULL; i++) {
338 for (j=0; mux_help[i][j] != '\0'; j++) {
339 if (mux_help[i][j] == '%')
340 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
341 else
342 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
343 }
344 }
345}
346
2724b180
AL		 347static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
348{
349 if (d->chr_event[mux_nr])
350 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
351}
352
6f97dba0
AL		 353static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
354{
355 if (d->term_got_escape) {
356 d->term_got_escape = 0;
357 if (ch == term_escape_char)
358 goto send_char;
359 switch(ch) {
360 case '?':
361 case 'h':
362 mux_print_help(chr);
363 break;
364 case 'x':
365 {
366 const char *term = "QEMU: Terminated\n\r";
367 chr->chr_write(chr,(uint8_t *)term,strlen(term));
368 exit(0);
369 break;
370 }
371 case 's':
6ab4b5ab 372 bdrv_commit_all();
6f97dba0
AL		 373 break;
374 case 'b':
a425d23f 375 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 376 break;
377 case 'c':
378 /* Switch to the next registered device */
799f1f23
GH		 379 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
380 d->focus++;
381 if (d->focus >= d->mux_cnt)
382 d->focus = 0;
383 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 384 break;
2d22959d
JK		 385 case 't':
386 d->timestamps = !d->timestamps;
387 d->timestamps_start = -1;
4ab312f7 388 d->linestart = 0;
2d22959d 389 break;
6f97dba0
AL		 390 }
391 } else if (ch == term_escape_char) {
392 d->term_got_escape = 1;
393 } else {
394 send_char:
395 return 1;
396 }
397 return 0;
398}
399
400static void mux_chr_accept_input(CharDriverState *chr)
401{
6f97dba0 402 MuxDriver *d = chr->opaque;
799f1f23 403 int m = d->focus;
6f97dba0 404
a80bf99f 405 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 406 d->chr_can_read[m] &&
407 d->chr_can_read[m](d->ext_opaque[m])) {
408 d->chr_read[m](d->ext_opaque[m],
a80bf99f 409 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 410 }
411}
412
413static int mux_chr_can_read(void *opaque)
414{
415 CharDriverState *chr = opaque;
416 MuxDriver *d = chr->opaque;
799f1f23 417 int m = d->focus;
6f97dba0 418
a80bf99f 419 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 420 return 1;
a80bf99f
AL		 421 if (d->chr_can_read[m])
422 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 423 return 0;
424}
425
426static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
427{
428 CharDriverState *chr = opaque;
429 MuxDriver *d = chr->opaque;
799f1f23 430 int m = d->focus;
6f97dba0
AL		 431 int i;
432
433 mux_chr_accept_input (opaque);
434
435 for(i = 0; i < size; i++)
436 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 437 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 438 d->chr_can_read[m] &&
439 d->chr_can_read[m](d->ext_opaque[m]))
440 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
441 else
a80bf99f 442 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 443 }
444}
445
446static void mux_chr_event(void *opaque, int event)
447{
448 CharDriverState *chr = opaque;
449 MuxDriver *d = chr->opaque;
450 int i;
451
452 /* Send the event to all registered listeners */
453 for (i = 0; i < d->mux_cnt; i++)
2724b180 454 mux_chr_send_event(d, i, event);
6f97dba0
AL		 455}
456
457static void mux_chr_update_read_handler(CharDriverState *chr)
458{
459 MuxDriver *d = chr->opaque;
460
461 if (d->mux_cnt >= MAX_MUX) {
462 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
463 return;
464 }
465 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
466 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
467 d->chr_read[d->mux_cnt] = chr->chr_read;
468 d->chr_event[d->mux_cnt] = chr->chr_event;
469 /* Fix up the real driver with mux routines */
470 if (d->mux_cnt == 0) {
471 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
472 mux_chr_event, chr);
473 }
799f1f23
GH		 474 if (d->focus != -1) {
475 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 476 }
799f1f23 477 d->focus = d->mux_cnt;
6f97dba0 478 d->mux_cnt++;
799f1f23 479 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 480}
481
7b7ab18d
MR		 482static bool muxes_realized;
483
484/**
485 * Called after processing of default and command-line-specified
486 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
487 * to a mux chardev. This is done here to ensure that
488 * output/prompts/banners are only displayed for the FE that has
489 * focus when initial command-line processing/machine init is
490 * completed.
491 *
492 * After this point, any new FE attached to any new or existing
493 * mux will receive CHR_EVENT_OPENED notifications for the BE
494 * immediately.
495 */
496static void muxes_realize_done(Notifier *notifier, void *unused)
497{
498 CharDriverState *chr;
499
500 QTAILQ_FOREACH(chr, &chardevs, next) {
501 if (chr->is_mux) {
502 MuxDriver *d = chr->opaque;
503 int i;
504
505 /* send OPENED to all already-attached FEs */
506 for (i = 0; i < d->mux_cnt; i++) {
507 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
508 }
509 /* mark mux as OPENED so any new FEs will immediately receive
510 * OPENED event
511 */
512 qemu_chr_be_generic_open(chr);
513 }
514 }
515 muxes_realized = true;
516}
517
518static Notifier muxes_realize_notify = {
519 .notify = muxes_realize_done,
520};
521
6f97dba0
AL		 522static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
523{
524 CharDriverState *chr;
525 MuxDriver *d;
526
7267c094
AL		 527 chr = g_malloc0(sizeof(CharDriverState));
528 d = g_malloc0(sizeof(MuxDriver));
6f97dba0
AL		 529
530 chr->opaque = d;
531 d->drv = drv;
799f1f23 532 d->focus = -1;
6f97dba0
AL		 533 chr->chr_write = mux_chr_write;
534 chr->chr_update_read_handler = mux_chr_update_read_handler;
535 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 536 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 537 chr->chr_set_fe_open = NULL;
7b7ab18d
MR		 538 /* only default to opened state if we've realized the initial
539 * set of muxes
540 */
541 chr->explicit_be_open = muxes_realized ? 0 : 1;
542 chr->is_mux = 1;
73cdf3f2 543
6f97dba0
AL		 544 return chr;
545}
546
547
548#ifdef _WIN32
d247d25f 549int send_all(int fd, const void *buf, int len1)
6f97dba0
AL		 550{
551 int ret, len;
552
553 len = len1;
554 while (len > 0) {
555 ret = send(fd, buf, len, 0);
556 if (ret < 0) {
6f97dba0
AL		 557 errno = WSAGetLastError();
558 if (errno != WSAEWOULDBLOCK) {
559 return -1;
560 }
561 } else if (ret == 0) {
562 break;
563 } else {
564 buf += ret;
565 len -= ret;
566 }
567 }
568 return len1 - len;
569}
570
571#else
572
5fc9cfed 573int send_all(int fd, const void *_buf, int len1)
6f97dba0
AL		 574{
575 int ret, len;
5fc9cfed 576 const uint8_t *buf = _buf;
6f97dba0
AL		 577
578 len = len1;
579 while (len > 0) {
580 ret = write(fd, buf, len);
581 if (ret < 0) {
582 if (errno != EINTR && errno != EAGAIN)
583 return -1;
584 } else if (ret == 0) {
585 break;
586 } else {
587 buf += ret;
588 len -= ret;
589 }
590 }
591 return len1 - len;
592}
4549a8b7
SB		 593
594int recv_all(int fd, void *_buf, int len1, bool single_read)
595{
596 int ret, len;
597 uint8_t *buf = _buf;
598
599 len = len1;
600 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
601 if (ret < 0) {
602 if (errno != EINTR && errno != EAGAIN) {
603 return -1;
604 }
605 continue;
606 } else {
607 if (single_read) {
608 return ret;
609 }
610 buf += ret;
611 len -= ret;
612 }
613 }
614 return len1 - len;
615}
616
6f97dba0
AL		 617#endif /* !_WIN32 */
618
96c63847
AL		 619typedef struct IOWatchPoll
620{
d185c094
PB		 621 GSource parent;
622
1e885b25 623 GIOChannel *channel;
96c63847 624 GSource *src;
96c63847
AL		 625
626 IOCanReadHandler *fd_can_read;
1e885b25 627 GSourceFunc fd_read;
96c63847 628 void *opaque;
96c63847
AL		 629} IOWatchPoll;
630
96c63847
AL		 631static IOWatchPoll *io_watch_poll_from_source(GSource *source)
632{
d185c094 633 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 634}
635
636static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
637{
638 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 639 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 640 bool was_active = iwp->src != NULL;
d185c094 641 if (was_active == now_active) {
96c63847
AL		 642 return FALSE;
643 }
644
d185c094 645 if (now_active) {
1e885b25
PB		 646 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
647 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 648 g_source_attach(iwp->src, NULL);
649 } else {
1e885b25
PB		 650 g_source_destroy(iwp->src);
651 g_source_unref(iwp->src);
652 iwp->src = NULL;
d185c094
PB		 653 }
654 return FALSE;
96c63847
AL		 655}
656
657static gboolean io_watch_poll_check(GSource *source)
658{
d185c094 659 return FALSE;
96c63847
AL		 660}
661
662static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
663 gpointer user_data)
664{
d185c094 665 abort();
96c63847
AL		 666}
667
668static void io_watch_poll_finalize(GSource *source)
669{
2b316774
PB		 670 /* Due to a glib bug, removing the last reference to a source
671 * inside a finalize callback causes recursive locking (and a
672 * deadlock). This is not a problem inside other callbacks,
673 * including dispatch callbacks, so we call io_remove_watch_poll
674 * to remove this source. At this point, iwp->src must
675 * be NULL, or we would leak it.
676 *
677 * This would be solved much more elegantly by child sources,
678 * but we support older glib versions that do not have them.
679 */
96c63847 680 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 681 assert(iwp->src == NULL);
96c63847
AL		 682}
683
684static GSourceFuncs io_watch_poll_funcs = {
685 .prepare = io_watch_poll_prepare,
686 .check = io_watch_poll_check,
687 .dispatch = io_watch_poll_dispatch,
688 .finalize = io_watch_poll_finalize,
689};
690
691/* Can only be used for read */
692static guint io_add_watch_poll(GIOChannel *channel,
693 IOCanReadHandler *fd_can_read,
694 GIOFunc fd_read,
695 gpointer user_data)
696{
697 IOWatchPoll *iwp;
0ca5aa4f 698 int tag;
96c63847 699
d185c094 700 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 701 iwp->fd_can_read = fd_can_read;
702 iwp->opaque = user_data;
1e885b25
PB		 703 iwp->channel = channel;
704 iwp->fd_read = (GSourceFunc) fd_read;
705 iwp->src = NULL;
96c63847 706
0ca5aa4f
PB		 707 tag = g_source_attach(&iwp->parent, NULL);
708 g_source_unref(&iwp->parent);
709 return tag;
96c63847
AL		 710}
711
2b316774
PB		 712static void io_remove_watch_poll(guint tag)
713{
714 GSource *source;
715 IOWatchPoll *iwp;
716
717 g_return_if_fail (tag > 0);
718
719 source = g_main_context_find_source_by_id(NULL, tag);
720 g_return_if_fail (source != NULL);
721
722 iwp = io_watch_poll_from_source(source);
723 if (iwp->src) {
724 g_source_destroy(iwp->src);
725 g_source_unref(iwp->src);
726 iwp->src = NULL;
727 }
728 g_source_destroy(&iwp->parent);
729}
730
26da70c7
AS		 731static void remove_fd_in_watch(CharDriverState *chr)
732{
733 if (chr->fd_in_tag) {
734 io_remove_watch_poll(chr->fd_in_tag);
735 chr->fd_in_tag = 0;
736 }
737}
738
44ab9ed4 739#ifndef _WIN32
96c63847
AL		 740static GIOChannel *io_channel_from_fd(int fd)
741{
742 GIOChannel *chan;
743
744 if (fd == -1) {
745 return NULL;
746 }
747
748 chan = g_io_channel_unix_new(fd);
749
750 g_io_channel_set_encoding(chan, NULL, NULL);
751 g_io_channel_set_buffered(chan, FALSE);
752
753 return chan;
754}
44ab9ed4 755#endif
96c63847 756
76a9644b
AL		 757static GIOChannel *io_channel_from_socket(int fd)
758{
759 GIOChannel *chan;
760
761 if (fd == -1) {
762 return NULL;
763 }
764
765#ifdef _WIN32
766 chan = g_io_channel_win32_new_socket(fd);
767#else
768 chan = g_io_channel_unix_new(fd);
769#endif
770
771 g_io_channel_set_encoding(chan, NULL, NULL);
772 g_io_channel_set_buffered(chan, FALSE);
773
774 return chan;
775}
776
684a096e 777static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847 778{
ac8c26f6
LE		 779 size_t offset = 0;
780 GIOStatus status = G_IO_STATUS_NORMAL;
96c63847 781
ac8c26f6
LE		 782 while (offset < len && status == G_IO_STATUS_NORMAL) {
783 gsize bytes_written = 0;
684a096e
AL		 784
785 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847 786 &bytes_written, NULL);
684a096e 787 offset += bytes_written;
96c63847 788 }
684a096e 789
ac8c26f6
LE		 790 if (offset > 0) {
791 return offset;
792 }
793 switch (status) {
794 case G_IO_STATUS_NORMAL:
795 g_assert(len == 0);
796 return 0;
797 case G_IO_STATUS_AGAIN:
798 errno = EAGAIN;
799 return -1;
800 default:
801 break;
802 }
803 errno = EINVAL;
804 return -1;
96c63847 805}
96c63847 806
44ab9ed4
BS		 807#ifndef _WIN32
808
a29753f8
AL		 809typedef struct FDCharDriver {
810 CharDriverState *chr;
811 GIOChannel *fd_in, *fd_out;
6f97dba0 812 int max_size;
a29753f8 813 QTAILQ_ENTRY(FDCharDriver) node;
6f97dba0
AL		 814} FDCharDriver;
815
6f97dba0
AL		 816static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
817{
818 FDCharDriver *s = chr->opaque;
a29753f8 819
684a096e 820 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 821}
822
a29753f8 823static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 824{
825 CharDriverState *chr = opaque;
826 FDCharDriver *s = chr->opaque;
a29753f8 827 int len;
9bd7854e 828 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 829 GIOStatus status;
830 gsize bytes_read;
6f97dba0
AL		 831
832 len = sizeof(buf);
a29753f8 833 if (len > s->max_size) {
6f97dba0 834 len = s->max_size;
a29753f8
AL		 835 }
836 if (len == 0) {
cdbf6e16 837 return TRUE;
a29753f8
AL		 838 }
839
840 status = g_io_channel_read_chars(chan, (gchar *)buf,
841 len, &bytes_read, NULL);
842 if (status == G_IO_STATUS_EOF) {
26da70c7 843 remove_fd_in_watch(chr);
a425d23f 844 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 845 return FALSE;
6f97dba0 846 }
a29753f8
AL		 847 if (status == G_IO_STATUS_NORMAL) {
848 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 849 }
a29753f8
AL		 850
851 return TRUE;
852}
853
854static int fd_chr_read_poll(void *opaque)
855{
856 CharDriverState *chr = opaque;
857 FDCharDriver *s = chr->opaque;
858
859 s->max_size = qemu_chr_be_can_write(chr);
860 return s->max_size;
6f97dba0
AL		 861}
862
23673ca7
AL		 863static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
864{
865 FDCharDriver *s = chr->opaque;
866 return g_io_create_watch(s->fd_out, cond);
867}
868
6f97dba0
AL		 869static void fd_chr_update_read_handler(CharDriverState *chr)
870{
871 FDCharDriver *s = chr->opaque;
872
26da70c7 873 remove_fd_in_watch(chr);
a29753f8 874 if (s->fd_in) {
7ba9addc
AS		 875 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
876 fd_chr_read, chr);
6f97dba0
AL		 877 }
878}
879
880static void fd_chr_close(struct CharDriverState *chr)
881{
882 FDCharDriver *s = chr->opaque;
883
26da70c7 884 remove_fd_in_watch(chr);
a29753f8
AL		 885 if (s->fd_in) {
886 g_io_channel_unref(s->fd_in);
887 }
888 if (s->fd_out) {
889 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 890 }
891
7267c094 892 g_free(s);
a425d23f 893 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 894}
895
896/* open a character device to a unix fd */
897static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
898{
899 CharDriverState *chr;
900 FDCharDriver *s;
901
7267c094
AL		 902 chr = g_malloc0(sizeof(CharDriverState));
903 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 904 s->fd_in = io_channel_from_fd(fd_in);
905 s->fd_out = io_channel_from_fd(fd_out);
23673ca7 906 fcntl(fd_out, F_SETFL, O_NONBLOCK);
a29753f8 907 s->chr = chr;
6f97dba0 908 chr->opaque = s;
23673ca7 909 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 910 chr->chr_write = fd_chr_write;
911 chr->chr_update_read_handler = fd_chr_update_read_handler;
912 chr->chr_close = fd_chr_close;
913
6f97dba0
AL		 914 return chr;
915}
916
548cbb36 917static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 918{
919 int fd_in, fd_out;
920 char filename_in[256], filename_out[256];
548cbb36 921 const char *filename = opts->device;
7d31544f
GH		 922
923 if (filename == NULL) {
924 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 925 return NULL;
7d31544f 926 }
6f97dba0
AL		 927
928 snprintf(filename_in, 256, "%s.in", filename);
929 snprintf(filename_out, 256, "%s.out", filename);
40ff6d7e
KW		 930 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
931 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 932 if (fd_in < 0 || fd_out < 0) {
933 if (fd_in >= 0)
934 close(fd_in);
935 if (fd_out >= 0)
936 close(fd_out);
b181e047 937 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 938 if (fd_in < 0) {
1f51470d 939 return NULL;
a89dd6c3 940 }
6f97dba0 941 }
1f51470d 942 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 943}
944
6f97dba0
AL		 945/* init terminal so that we can grab keys */
946static struct termios oldtty;
947static int old_fd0_flags;
bb002513 948static bool stdio_allow_signal;
6f97dba0
AL		 949
950static void term_exit(void)
951{
952 tcsetattr (0, TCSANOW, &oldtty);
953 fcntl(0, F_SETFL, old_fd0_flags);
954}
955
bb002513 956static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 957{
958 struct termios tty;
959
0369364b 960 tty = oldtty;
bb002513
PB		 961 if (!echo) {
962 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 963 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 964 tty.c_oflag |= OPOST;
965 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
966 tty.c_cflag &= ~(CSIZE|PARENB);
967 tty.c_cflag |= CS8;
968 tty.c_cc[VMIN] = 1;
969 tty.c_cc[VTIME] = 0;
970 }
bb002513 971 if (!stdio_allow_signal)
6f97dba0 972 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 973
974 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 975}
976
977static void qemu_chr_close_stdio(struct CharDriverState *chr)
978{
979 term_exit();
6f97dba0
AL		 980 fd_chr_close(chr);
981}
982
7c358031 983static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 984{
985 CharDriverState *chr;
986
ab51b1d5
MT		 987 if (is_daemonized()) {
988 error_report("cannot use stdio with -daemonize");
989 return NULL;
990 }
ed7a1540
AL		 991 old_fd0_flags = fcntl(0, F_GETFL);
992 tcgetattr (0, &oldtty);
993 fcntl(0, F_SETFL, O_NONBLOCK);
994 atexit(term_exit);
0369364b 995
6f97dba0
AL		 996 chr = qemu_chr_open_fd(0, 1);
997 chr->chr_close = qemu_chr_close_stdio;
bb002513 998 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 999 if (opts->has_signal) {
1000 stdio_allow_signal = opts->signal;
1001 }
15f31519 1002 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1003
1f51470d 1004 return chr;
6f97dba0
AL		 1005}
1006
6f97dba0 1007#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1008 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1009 || defined(__GLIBC__)
6f97dba0 1010
e551498e
GH		 1011#define HAVE_CHARDEV_TTY 1
1012
6f97dba0 1013typedef struct {
093d3a20 1014 GIOChannel *fd;
6f97dba0 1015 int connected;
6f97dba0 1016 int read_bytes;
8aa33caf 1017 guint timer_tag;
6f97dba0
AL		 1018} PtyCharDriver;
1019
1020static void pty_chr_update_read_handler(CharDriverState *chr);
1021static void pty_chr_state(CharDriverState *chr, int connected);
1022
8aa33caf
AL		 1023static gboolean pty_chr_timer(gpointer opaque)
1024{
1025 struct CharDriverState *chr = opaque;
1026 PtyCharDriver *s = chr->opaque;
1027
79f20075 1028 s->timer_tag = 0;
b0d768c3
GH		 1029 if (!s->connected) {
1030 /* Next poll ... */
1031 pty_chr_update_read_handler(chr);
1032 }
8aa33caf
AL		 1033 return FALSE;
1034}
1035
1036static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1037{
1038 PtyCharDriver *s = chr->opaque;
1039
1040 if (s->timer_tag) {
1041 g_source_remove(s->timer_tag);
1042 s->timer_tag = 0;
1043 }
1044
1045 if (ms == 1000) {
1046 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1047 } else {
1048 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1049 }
1050}
1051
6f97dba0
AL		 1052static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1053{
1054 PtyCharDriver *s = chr->opaque;
1055
1056 if (!s->connected) {
1057 /* guest sends data, check for (re-)connect */
1058 pty_chr_update_read_handler(chr);
1059 return 0;
1060 }
684a096e 1061 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1062}
1063
e6a87ed8
AL		 1064static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1065{
1066 PtyCharDriver *s = chr->opaque;
1067 return g_io_create_watch(s->fd, cond);
1068}
1069
6f97dba0
AL		 1070static int pty_chr_read_poll(void *opaque)
1071{
1072 CharDriverState *chr = opaque;
1073 PtyCharDriver *s = chr->opaque;
1074
909cda12 1075 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1076 return s->read_bytes;
1077}
1078
093d3a20 1079static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1080{
1081 CharDriverState *chr = opaque;
1082 PtyCharDriver *s = chr->opaque;
093d3a20 1083 gsize size, len;
9bd7854e 1084 uint8_t buf[READ_BUF_LEN];
093d3a20 1085 GIOStatus status;
6f97dba0
AL		 1086
1087 len = sizeof(buf);
1088 if (len > s->read_bytes)
1089 len = s->read_bytes;
cdbf6e16
PB		 1090 if (len == 0) {
1091 return TRUE;
1092 }
093d3a20
AL		 1093 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1094 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1095 pty_chr_state(chr, 0);
093d3a20
AL		 1096 return FALSE;
1097 } else {
6f97dba0 1098 pty_chr_state(chr, 1);
fa5efccb 1099 qemu_chr_be_write(chr, buf, size);
6f97dba0 1100 }
093d3a20 1101 return TRUE;
6f97dba0
AL		 1102}
1103
1104static void pty_chr_update_read_handler(CharDriverState *chr)
1105{
1106 PtyCharDriver *s = chr->opaque;
85a67692 1107 GPollFD pfd;
6f97dba0 1108
85a67692
PB		 1109 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1110 pfd.events = G_IO_OUT;
1111 pfd.revents = 0;
1112 g_poll(&pfd, 1, 0);
1113 if (pfd.revents & G_IO_HUP) {
1114 pty_chr_state(chr, 0);
1115 } else {
1116 pty_chr_state(chr, 1);
093d3a20 1117 }
6f97dba0
AL		 1118}
1119
1120static void pty_chr_state(CharDriverState *chr, int connected)
1121{
1122 PtyCharDriver *s = chr->opaque;
1123
1124 if (!connected) {
26da70c7 1125 remove_fd_in_watch(chr);
6f97dba0 1126 s->connected = 0;
6f97dba0
AL		 1127 /* (re-)connect poll interval for idle guests: once per second.
1128 * We check more frequently in case the guests sends data to
1129 * the virtual device linked to our pty. */
8aa33caf 1130 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1131 } else {
85a67692
PB		 1132 if (s->timer_tag) {
1133 g_source_remove(s->timer_tag);
1134 s->timer_tag = 0;
1135 }
1136 if (!s->connected) {
85a67692 1137 s->connected = 1;
3a3567d3 1138 qemu_chr_be_generic_open(chr);
ac1b84dd
GH		 1139 }
1140 if (!chr->fd_in_tag) {
7ba9addc
AS		 1141 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1142 pty_chr_read, chr);
85a67692 1143 }
6f97dba0
AL		 1144 }
1145}
1146
6f97dba0
AL		 1147static void pty_chr_close(struct CharDriverState *chr)
1148{
1149 PtyCharDriver *s = chr->opaque;
093d3a20 1150 int fd;
6f97dba0 1151
26da70c7 1152 remove_fd_in_watch(chr);
093d3a20
AL		 1153 fd = g_io_channel_unix_get_fd(s->fd);
1154 g_io_channel_unref(s->fd);
1155 close(fd);
8aa33caf
AL		 1156 if (s->timer_tag) {
1157 g_source_remove(s->timer_tag);
910b6368 1158 s->timer_tag = 0;
8aa33caf 1159 }
7267c094 1160 g_free(s);
a425d23f 1161 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1162}
1163
e68c5958
GH		 1164static CharDriverState *qemu_chr_open_pty(const char *id,
1165 ChardevReturn *ret)
6f97dba0
AL		 1166{
1167 CharDriverState *chr;
1168 PtyCharDriver *s;
e68c5958 1169 int master_fd, slave_fd;
6f97dba0 1170 char pty_name[PATH_MAX];
6f97dba0 1171
4efeabbb
MT		 1172 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1173 if (master_fd < 0) {
1f51470d 1174 return NULL;
6f97dba0
AL		 1175 }
1176
6f97dba0
AL		 1177 close(slave_fd);
1178
a4e26048
MA		 1179 chr = g_malloc0(sizeof(CharDriverState));
1180
4efeabbb
MT		 1181 chr->filename = g_strdup_printf("pty:%s", pty_name);
1182 ret->pty = g_strdup(pty_name);
e68c5958 1183 ret->has_pty = true;
58650218 1184
e68c5958 1185 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1186 pty_name, id);
6f97dba0 1187
a4e26048 1188 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1189 chr->opaque = s;
1190 chr->chr_write = pty_chr_write;
1191 chr->chr_update_read_handler = pty_chr_update_read_handler;
1192 chr->chr_close = pty_chr_close;
e6a87ed8 1193 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1194 chr->explicit_be_open = true;
6f97dba0 1195
093d3a20 1196 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1197 s->timer_tag = 0;
6f97dba0 1198
1f51470d 1199 return chr;
6f97dba0
AL		 1200}
1201
1202static void tty_serial_init(int fd, int speed,
1203 int parity, int data_bits, int stop_bits)
1204{
1205 struct termios tty;
1206 speed_t spd;
1207
1208#if 0
1209 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1210 speed, parity, data_bits, stop_bits);
1211#endif
1212 tcgetattr (fd, &tty);
1213
45eea13b
SW		 1214#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1215 speed = speed * 10 / 11;
1216 do {
1217 check_speed(50);
1218 check_speed(75);
1219 check_speed(110);
1220 check_speed(134);
1221 check_speed(150);
1222 check_speed(200);
1223 check_speed(300);
1224 check_speed(600);
1225 check_speed(1200);
1226 check_speed(1800);
1227 check_speed(2400);
1228 check_speed(4800);
1229 check_speed(9600);
1230 check_speed(19200);
1231 check_speed(38400);
1232 /* Non-Posix values follow. They may be unsupported on some systems. */
1233 check_speed(57600);
1234 check_speed(115200);
1235#ifdef B230400
1236 check_speed(230400);
1237#endif
1238#ifdef B460800
1239 check_speed(460800);
1240#endif
1241#ifdef B500000
1242 check_speed(500000);
1243#endif
1244#ifdef B576000
1245 check_speed(576000);
1246#endif
1247#ifdef B921600
1248 check_speed(921600);
1249#endif
1250#ifdef B1000000
1251 check_speed(1000000);
1252#endif
1253#ifdef B1152000
1254 check_speed(1152000);
1255#endif
1256#ifdef B1500000
1257 check_speed(1500000);
1258#endif
1259#ifdef B2000000
1260 check_speed(2000000);
1261#endif
1262#ifdef B2500000
1263 check_speed(2500000);
1264#endif
1265#ifdef B3000000
1266 check_speed(3000000);
1267#endif
1268#ifdef B3500000
1269 check_speed(3500000);
1270#endif
1271#ifdef B4000000
1272 check_speed(4000000);
1273#endif
6f97dba0 1274 spd = B115200;
45eea13b 1275 } while (0);
6f97dba0
AL		 1276
1277 cfsetispeed(&tty, spd);
1278 cfsetospeed(&tty, spd);
1279
1280 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1281 |INLCR|IGNCR|ICRNL|IXON);
1282 tty.c_oflag |= OPOST;
1283 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1284 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1285 switch(data_bits) {
1286 default:
1287 case 8:
1288 tty.c_cflag |= CS8;
1289 break;
1290 case 7:
1291 tty.c_cflag |= CS7;
1292 break;
1293 case 6:
1294 tty.c_cflag |= CS6;
1295 break;
1296 case 5:
1297 tty.c_cflag |= CS5;
1298 break;
1299 }
1300 switch(parity) {
1301 default:
1302 case 'N':
1303 break;
1304 case 'E':
1305 tty.c_cflag |= PARENB;
1306 break;
1307 case 'O':
1308 tty.c_cflag |= PARENB | PARODD;
1309 break;
1310 }
1311 if (stop_bits == 2)
1312 tty.c_cflag |= CSTOPB;
1313
1314 tcsetattr (fd, TCSANOW, &tty);
1315}
1316
1317static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1318{
1319 FDCharDriver *s = chr->opaque;
1320
1321 switch(cmd) {
1322 case CHR_IOCTL_SERIAL_SET_PARAMS:
1323 {
1324 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1325 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1326 ssp->speed, ssp->parity,
6f97dba0
AL		 1327 ssp->data_bits, ssp->stop_bits);
1328 }
1329 break;
1330 case CHR_IOCTL_SERIAL_SET_BREAK:
1331 {
1332 int enable = *(int *)arg;
a29753f8
AL		 1333 if (enable) {
1334 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1335 }
6f97dba0
AL		 1336 }
1337 break;
1338 case CHR_IOCTL_SERIAL_GET_TIOCM:
1339 {
1340 int sarg = 0;
1341 int *targ = (int *)arg;
a29753f8 1342 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1343 *targ = 0;
b4abdfa4 1344 if (sarg & TIOCM_CTS)
6f97dba0 1345 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1346 if (sarg & TIOCM_CAR)
6f97dba0 1347 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1348 if (sarg & TIOCM_DSR)
6f97dba0 1349 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1350 if (sarg & TIOCM_RI)
6f97dba0 1351 *targ |= CHR_TIOCM_RI;
b4abdfa4 1352 if (sarg & TIOCM_DTR)
6f97dba0 1353 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1354 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1355 *targ |= CHR_TIOCM_RTS;
1356 }
1357 break;
1358 case CHR_IOCTL_SERIAL_SET_TIOCM:
1359 {
1360 int sarg = *(int *)arg;
1361 int targ = 0;
a29753f8 1362 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1363 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1364 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1365 if (sarg & CHR_TIOCM_CTS)
1366 targ |= TIOCM_CTS;
1367 if (sarg & CHR_TIOCM_CAR)
1368 targ |= TIOCM_CAR;
1369 if (sarg & CHR_TIOCM_DSR)
1370 targ |= TIOCM_DSR;
1371 if (sarg & CHR_TIOCM_RI)
1372 targ |= TIOCM_RI;
1373 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1374 targ |= TIOCM_DTR;
b4abdfa4 1375 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1376 targ |= TIOCM_RTS;
a29753f8 1377 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1378 }
1379 break;
1380 default:
1381 return -ENOTSUP;
1382 }
1383 return 0;
1384}
1385
4266a134
DA		 1386static void qemu_chr_close_tty(CharDriverState *chr)
1387{
1388 FDCharDriver *s = chr->opaque;
1389 int fd = -1;
1390
1391 if (s) {
a29753f8 1392 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1393 }
1394
1395 fd_chr_close(chr);
1396
1397 if (fd >= 0) {
1398 close(fd);
1399 }
1400}
1401
d59044ef
GH		 1402static CharDriverState *qemu_chr_open_tty_fd(int fd)
1403{
1404 CharDriverState *chr;
1405
1406 tty_serial_init(fd, 115200, 'N', 8, 1);
1407 chr = qemu_chr_open_fd(fd, fd);
1408 chr->chr_ioctl = tty_serial_ioctl;
1409 chr->chr_close = qemu_chr_close_tty;
1410 return chr;
1411}
6f97dba0
AL		 1412#endif /* __linux__ || __sun__ */
1413
1414#if defined(__linux__)
e551498e
GH		 1415
1416#define HAVE_CHARDEV_PARPORT 1
1417
6f97dba0
AL		 1418typedef struct {
1419 int fd;
1420 int mode;
1421} ParallelCharDriver;
1422
1423static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1424{
1425 if (s->mode != mode) {
1426 int m = mode;
1427 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1428 return 0;
1429 s->mode = mode;
1430 }
1431 return 1;
1432}
1433
1434static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1435{
1436 ParallelCharDriver *drv = chr->opaque;
1437 int fd = drv->fd;
1438 uint8_t b;
1439
1440 switch(cmd) {
1441 case CHR_IOCTL_PP_READ_DATA:
1442 if (ioctl(fd, PPRDATA, &b) < 0)
1443 return -ENOTSUP;
1444 *(uint8_t *)arg = b;
1445 break;
1446 case CHR_IOCTL_PP_WRITE_DATA:
1447 b = *(uint8_t *)arg;
1448 if (ioctl(fd, PPWDATA, &b) < 0)
1449 return -ENOTSUP;
1450 break;
1451 case CHR_IOCTL_PP_READ_CONTROL:
1452 if (ioctl(fd, PPRCONTROL, &b) < 0)
1453 return -ENOTSUP;
1454 /* Linux gives only the lowest bits, and no way to know data
1455 direction! For better compatibility set the fixed upper
1456 bits. */
1457 *(uint8_t *)arg = b | 0xc0;
1458 break;
1459 case CHR_IOCTL_PP_WRITE_CONTROL:
1460 b = *(uint8_t *)arg;
1461 if (ioctl(fd, PPWCONTROL, &b) < 0)
1462 return -ENOTSUP;
1463 break;
1464 case CHR_IOCTL_PP_READ_STATUS:
1465 if (ioctl(fd, PPRSTATUS, &b) < 0)
1466 return -ENOTSUP;
1467 *(uint8_t *)arg = b;
1468 break;
1469 case CHR_IOCTL_PP_DATA_DIR:
1470 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1471 return -ENOTSUP;
1472 break;
1473 case CHR_IOCTL_PP_EPP_READ_ADDR:
1474 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1475 struct ParallelIOArg *parg = arg;
1476 int n = read(fd, parg->buffer, parg->count);
1477 if (n != parg->count) {
1478 return -EIO;
1479 }
1480 }
1481 break;
1482 case CHR_IOCTL_PP_EPP_READ:
1483 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1484 struct ParallelIOArg *parg = arg;
1485 int n = read(fd, parg->buffer, parg->count);
1486 if (n != parg->count) {
1487 return -EIO;
1488 }
1489 }
1490 break;
1491 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1492 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1493 struct ParallelIOArg *parg = arg;
1494 int n = write(fd, parg->buffer, parg->count);
1495 if (n != parg->count) {
1496 return -EIO;
1497 }
1498 }
1499 break;
1500 case CHR_IOCTL_PP_EPP_WRITE:
1501 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1502 struct ParallelIOArg *parg = arg;
1503 int n = write(fd, parg->buffer, parg->count);
1504 if (n != parg->count) {
1505 return -EIO;
1506 }
1507 }
1508 break;
1509 default:
1510 return -ENOTSUP;
1511 }
1512 return 0;
1513}
1514
1515static void pp_close(CharDriverState *chr)
1516{
1517 ParallelCharDriver *drv = chr->opaque;
1518 int fd = drv->fd;
1519
1520 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1521 ioctl(fd, PPRELEASE);
1522 close(fd);
7267c094 1523 g_free(drv);
a425d23f 1524 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1525}
1526
88a946d3 1527static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1528{
1529 CharDriverState *chr;
1530 ParallelCharDriver *drv;
6f97dba0
AL		 1531
1532 if (ioctl(fd, PPCLAIM) < 0) {
1533 close(fd);
1f51470d 1534 return NULL;
6f97dba0
AL		 1535 }
1536
7267c094 1537 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1538 drv->fd = fd;
1539 drv->mode = IEEE1284_MODE_COMPAT;
1540
7267c094 1541 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0
AL		 1542 chr->chr_write = null_chr_write;
1543 chr->chr_ioctl = pp_ioctl;
1544 chr->chr_close = pp_close;
1545 chr->opaque = drv;
1546
1f51470d 1547 return chr;
6f97dba0
AL		 1548}
1549#endif /* __linux__ */
1550
a167ba50 1551#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1552
1553#define HAVE_CHARDEV_PARPORT 1
1554
6972f935
BS		 1555static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1556{
e0efb993 1557 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1558 uint8_t b;
1559
1560 switch(cmd) {
1561 case CHR_IOCTL_PP_READ_DATA:
1562 if (ioctl(fd, PPIGDATA, &b) < 0)
1563 return -ENOTSUP;
1564 *(uint8_t *)arg = b;
1565 break;
1566 case CHR_IOCTL_PP_WRITE_DATA:
1567 b = *(uint8_t *)arg;
1568 if (ioctl(fd, PPISDATA, &b) < 0)
1569 return -ENOTSUP;
1570 break;
1571 case CHR_IOCTL_PP_READ_CONTROL:
1572 if (ioctl(fd, PPIGCTRL, &b) < 0)
1573 return -ENOTSUP;
1574 *(uint8_t *)arg = b;
1575 break;
1576 case CHR_IOCTL_PP_WRITE_CONTROL:
1577 b = *(uint8_t *)arg;
1578 if (ioctl(fd, PPISCTRL, &b) < 0)
1579 return -ENOTSUP;
1580 break;
1581 case CHR_IOCTL_PP_READ_STATUS:
1582 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1583 return -ENOTSUP;
1584 *(uint8_t *)arg = b;
1585 break;
1586 default:
1587 return -ENOTSUP;
1588 }
1589 return 0;
1590}
1591
88a946d3 1592static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1593{
1594 CharDriverState *chr;
6972f935 1595
7267c094 1596 chr = g_malloc0(sizeof(CharDriverState));
e0efb993 1597 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1598 chr->chr_write = null_chr_write;
1599 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1600 chr->explicit_be_open = true;
1f51470d 1601 return chr;
6972f935
BS		 1602}
1603#endif
1604
6f97dba0
AL		 1605#else /* _WIN32 */
1606
1607typedef struct {
1608 int max_size;
1609 HANDLE hcom, hrecv, hsend;
1610 OVERLAPPED orecv, osend;
1611 BOOL fpipe;
1612 DWORD len;
1613} WinCharState;
1614
db418a0a
FC		 1615typedef struct {
1616 HANDLE hStdIn;
1617 HANDLE hInputReadyEvent;
1618 HANDLE hInputDoneEvent;
1619 HANDLE hInputThread;
1620 uint8_t win_stdio_buf;
1621} WinStdioCharState;
1622
6f97dba0
AL		 1623#define NSENDBUF 2048
1624#define NRECVBUF 2048
1625#define MAXCONNECT 1
1626#define NTIMEOUT 5000
1627
1628static int win_chr_poll(void *opaque);
1629static int win_chr_pipe_poll(void *opaque);
1630
1631static void win_chr_close(CharDriverState *chr)
1632{
1633 WinCharState *s = chr->opaque;
1634
1635 if (s->hsend) {
1636 CloseHandle(s->hsend);
1637 s->hsend = NULL;
1638 }
1639 if (s->hrecv) {
1640 CloseHandle(s->hrecv);
1641 s->hrecv = NULL;
1642 }
1643 if (s->hcom) {
1644 CloseHandle(s->hcom);
1645 s->hcom = NULL;
1646 }
1647 if (s->fpipe)
1648 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1649 else
1650 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1651
a425d23f 1652 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1653}
1654
1655static int win_chr_init(CharDriverState *chr, const char *filename)
1656{
1657 WinCharState *s = chr->opaque;
1658 COMMCONFIG comcfg;
1659 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1660 COMSTAT comstat;
1661 DWORD size;
1662 DWORD err;
1663
1664 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1665 if (!s->hsend) {
1666 fprintf(stderr, "Failed CreateEvent\n");
1667 goto fail;
1668 }
1669 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1670 if (!s->hrecv) {
1671 fprintf(stderr, "Failed CreateEvent\n");
1672 goto fail;
1673 }
1674
1675 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1676 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1677 if (s->hcom == INVALID_HANDLE_VALUE) {
1678 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1679 s->hcom = NULL;
1680 goto fail;
1681 }
1682
1683 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1684 fprintf(stderr, "Failed SetupComm\n");
1685 goto fail;
1686 }
1687
1688 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1689 size = sizeof(COMMCONFIG);
1690 GetDefaultCommConfig(filename, &comcfg, &size);
1691 comcfg.dcb.DCBlength = sizeof(DCB);
1692 CommConfigDialog(filename, NULL, &comcfg);
1693
1694 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1695 fprintf(stderr, "Failed SetCommState\n");
1696 goto fail;
1697 }
1698
1699 if (!SetCommMask(s->hcom, EV_ERR)) {
1700 fprintf(stderr, "Failed SetCommMask\n");
1701 goto fail;
1702 }
1703
1704 cto.ReadIntervalTimeout = MAXDWORD;
1705 if (!SetCommTimeouts(s->hcom, &cto)) {
1706 fprintf(stderr, "Failed SetCommTimeouts\n");
1707 goto fail;
1708 }
1709
1710 if (!ClearCommError(s->hcom, &err, &comstat)) {
1711 fprintf(stderr, "Failed ClearCommError\n");
1712 goto fail;
1713 }
1714 qemu_add_polling_cb(win_chr_poll, chr);
1715 return 0;
1716
1717 fail:
1718 win_chr_close(chr);
1719 return -1;
1720}
1721
1722static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1723{
1724 WinCharState *s = chr->opaque;
1725 DWORD len, ret, size, err;
1726
1727 len = len1;
1728 ZeroMemory(&s->osend, sizeof(s->osend));
1729 s->osend.hEvent = s->hsend;
1730 while (len > 0) {
1731 if (s->hsend)
1732 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1733 else
1734 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1735 if (!ret) {
1736 err = GetLastError();
1737 if (err == ERROR_IO_PENDING) {
1738 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1739 if (ret) {
1740 buf += size;
1741 len -= size;
1742 } else {
1743 break;
1744 }
1745 } else {
1746 break;
1747 }
1748 } else {
1749 buf += size;
1750 len -= size;
1751 }
1752 }
1753 return len1 - len;
1754}
1755
1756static int win_chr_read_poll(CharDriverState *chr)
1757{
1758 WinCharState *s = chr->opaque;
1759
909cda12 1760 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1761 return s->max_size;
1762}
1763
1764static void win_chr_readfile(CharDriverState *chr)
1765{
1766 WinCharState *s = chr->opaque;
1767 int ret, err;
9bd7854e 1768 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1769 DWORD size;
1770
1771 ZeroMemory(&s->orecv, sizeof(s->orecv));
1772 s->orecv.hEvent = s->hrecv;
1773 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1774 if (!ret) {
1775 err = GetLastError();
1776 if (err == ERROR_IO_PENDING) {
1777 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1778 }
1779 }
1780
1781 if (size > 0) {
fa5efccb 1782 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 1783 }
1784}
1785
1786static void win_chr_read(CharDriverState *chr)
1787{
1788 WinCharState *s = chr->opaque;
1789
1790 if (s->len > s->max_size)
1791 s->len = s->max_size;
1792 if (s->len == 0)
1793 return;
1794
1795 win_chr_readfile(chr);
1796}
1797
1798static int win_chr_poll(void *opaque)
1799{
1800 CharDriverState *chr = opaque;
1801 WinCharState *s = chr->opaque;
1802 COMSTAT status;
1803 DWORD comerr;
1804
1805 ClearCommError(s->hcom, &comerr, &status);
1806 if (status.cbInQue > 0) {
1807 s->len = status.cbInQue;
1808 win_chr_read_poll(chr);
1809 win_chr_read(chr);
1810 return 1;
1811 }
1812 return 0;
1813}
1814
d59044ef 1815static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 1816{
1817 CharDriverState *chr;
1818 WinCharState *s;
1819
7267c094
AL		 1820 chr = g_malloc0(sizeof(CharDriverState));
1821 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1822 chr->opaque = s;
1823 chr->chr_write = win_chr_write;
1824 chr->chr_close = win_chr_close;
1825
1826 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 1827 g_free(s);
1828 g_free(chr);
1f51470d 1829 return NULL;
6f97dba0 1830 }
1f51470d 1831 return chr;
6f97dba0
AL		 1832}
1833
1834static int win_chr_pipe_poll(void *opaque)
1835{
1836 CharDriverState *chr = opaque;
1837 WinCharState *s = chr->opaque;
1838 DWORD size;
1839
1840 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1841 if (size > 0) {
1842 s->len = size;
1843 win_chr_read_poll(chr);
1844 win_chr_read(chr);
1845 return 1;
1846 }
1847 return 0;
1848}
1849
1850static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1851{
1852 WinCharState *s = chr->opaque;
1853 OVERLAPPED ov;
1854 int ret;
1855 DWORD size;
1856 char openname[256];
1857
1858 s->fpipe = TRUE;
1859
1860 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1861 if (!s->hsend) {
1862 fprintf(stderr, "Failed CreateEvent\n");
1863 goto fail;
1864 }
1865 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1866 if (!s->hrecv) {
1867 fprintf(stderr, "Failed CreateEvent\n");
1868 goto fail;
1869 }
1870
1871 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1872 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1873 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1874 PIPE_WAIT,
1875 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1876 if (s->hcom == INVALID_HANDLE_VALUE) {
1877 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1878 s->hcom = NULL;
1879 goto fail;
1880 }
1881
1882 ZeroMemory(&ov, sizeof(ov));
1883 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1884 ret = ConnectNamedPipe(s->hcom, &ov);
1885 if (ret) {
1886 fprintf(stderr, "Failed ConnectNamedPipe\n");
1887 goto fail;
1888 }
1889
1890 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1891 if (!ret) {
1892 fprintf(stderr, "Failed GetOverlappedResult\n");
1893 if (ov.hEvent) {
1894 CloseHandle(ov.hEvent);
1895 ov.hEvent = NULL;
1896 }
1897 goto fail;
1898 }
1899
1900 if (ov.hEvent) {
1901 CloseHandle(ov.hEvent);
1902 ov.hEvent = NULL;
1903 }
1904 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1905 return 0;
1906
1907 fail:
1908 win_chr_close(chr);
1909 return -1;
1910}
1911
1912
548cbb36 1913static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 1914{
548cbb36 1915 const char *filename = opts->device;
6f97dba0
AL		 1916 CharDriverState *chr;
1917 WinCharState *s;
1918
7267c094
AL		 1919 chr = g_malloc0(sizeof(CharDriverState));
1920 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1921 chr->opaque = s;
1922 chr->chr_write = win_chr_write;
1923 chr->chr_close = win_chr_close;
1924
1925 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 1926 g_free(s);
1927 g_free(chr);
1f51470d 1928 return NULL;
6f97dba0 1929 }
1f51470d 1930 return chr;
6f97dba0
AL		 1931}
1932
1f51470d 1933static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 1934{
1935 CharDriverState *chr;
1936 WinCharState *s;
1937
7267c094
AL		 1938 chr = g_malloc0(sizeof(CharDriverState));
1939 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1940 s->hcom = fd_out;
1941 chr->opaque = s;
1942 chr->chr_write = win_chr_write;
1f51470d 1943 return chr;
6f97dba0
AL		 1944}
1945
d9ac374f 1946static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 1947{
1f51470d 1948 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 1949}
1950
db418a0a
FC		 1951static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1952{
1953 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1954 DWORD dwSize;
1955 int len1;
1956
1957 len1 = len;
1958
1959 while (len1 > 0) {
1960 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1961 break;
1962 }
1963 buf += dwSize;
1964 len1 -= dwSize;
1965 }
1966
1967 return len - len1;
1968}
1969
1970static void win_stdio_wait_func(void *opaque)
1971{
1972 CharDriverState *chr = opaque;
1973 WinStdioCharState *stdio = chr->opaque;
1974 INPUT_RECORD buf[4];
1975 int ret;
1976 DWORD dwSize;
1977 int i;
1978
dff7424d 1979 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 1980
1981 if (!ret) {
1982 /* Avoid error storm */
1983 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1984 return;
1985 }
1986
1987 for (i = 0; i < dwSize; i++) {
1988 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
1989
1990 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
1991 int j;
1992 if (kev->uChar.AsciiChar != 0) {
1993 for (j = 0; j < kev->wRepeatCount; j++) {
1994 if (qemu_chr_be_can_write(chr)) {
1995 uint8_t c = kev->uChar.AsciiChar;
1996 qemu_chr_be_write(chr, &c, 1);
1997 }
1998 }
1999 }
2000 }
2001 }
2002}
2003
2004static DWORD WINAPI win_stdio_thread(LPVOID param)
2005{
2006 CharDriverState *chr = param;
2007 WinStdioCharState *stdio = chr->opaque;
2008 int ret;
2009 DWORD dwSize;
2010
2011 while (1) {
2012
2013 /* Wait for one byte */
2014 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2015
2016 /* Exit in case of error, continue if nothing read */
2017 if (!ret) {
2018 break;
2019 }
2020 if (!dwSize) {
2021 continue;
2022 }
2023
2024 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2025 if (stdio->win_stdio_buf == '\r') {
2026 continue;
2027 }
2028
2029 /* Signal the main thread and wait until the byte was eaten */
2030 if (!SetEvent(stdio->hInputReadyEvent)) {
2031 break;
2032 }
2033 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2034 != WAIT_OBJECT_0) {
2035 break;
2036 }
2037 }
2038
2039 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2040 return 0;
2041}
2042
2043static void win_stdio_thread_wait_func(void *opaque)
2044{
2045 CharDriverState *chr = opaque;
2046 WinStdioCharState *stdio = chr->opaque;
2047
2048 if (qemu_chr_be_can_write(chr)) {
2049 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2050 }
2051
2052 SetEvent(stdio->hInputDoneEvent);
2053}
2054
2055static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2056{
2057 WinStdioCharState *stdio = chr->opaque;
2058 DWORD dwMode = 0;
2059
2060 GetConsoleMode(stdio->hStdIn, &dwMode);
2061
2062 if (echo) {
2063 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2064 } else {
2065 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2066 }
2067}
2068
2069static void win_stdio_close(CharDriverState *chr)
2070{
2071 WinStdioCharState *stdio = chr->opaque;
2072
2073 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2074 CloseHandle(stdio->hInputReadyEvent);
2075 }
2076 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2077 CloseHandle(stdio->hInputDoneEvent);
2078 }
2079 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2080 TerminateThread(stdio->hInputThread, 0);
2081 }
2082
2083 g_free(chr->opaque);
2084 g_free(chr);
db418a0a
FC		 2085}
2086
7c358031 2087static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2088{
2089 CharDriverState *chr;
2090 WinStdioCharState *stdio;
2091 DWORD dwMode;
2092 int is_console = 0;
2093
db418a0a
FC		 2094 chr = g_malloc0(sizeof(CharDriverState));
2095 stdio = g_malloc0(sizeof(WinStdioCharState));
2096
2097 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2098 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2099 fprintf(stderr, "cannot open stdio: invalid handle\n");
2100 exit(1);
2101 }
2102
2103 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2104
2105 chr->opaque = stdio;
2106 chr->chr_write = win_stdio_write;
2107 chr->chr_close = win_stdio_close;
2108
ed7a1540
AL		 2109 if (is_console) {
2110 if (qemu_add_wait_object(stdio->hStdIn,
2111 win_stdio_wait_func, chr)) {
2112 fprintf(stderr, "qemu_add_wait_object: failed\n");
2113 }
2114 } else {
2115 DWORD dwId;
2116
2117 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2118 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2119 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2120 chr, 0, &dwId);
2121
2122 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2123 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2124 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2125 fprintf(stderr, "cannot create stdio thread or event\n");
2126 exit(1);
2127 }
2128 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2129 win_stdio_thread_wait_func, chr)) {
2130 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2131 }
2132 }
2133
2134 dwMode |= ENABLE_LINE_INPUT;
2135
ed7a1540 2136 if (is_console) {
db418a0a
FC		 2137 /* set the terminal in raw mode */
2138 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2139 dwMode |= ENABLE_PROCESSED_INPUT;
2140 }
2141
2142 SetConsoleMode(stdio->hStdIn, dwMode);
2143
2144 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2145 qemu_chr_fe_set_echo(chr, false);
2146
1f51470d 2147 return chr;
db418a0a 2148}
6f97dba0
AL		 2149#endif /* !_WIN32 */
2150
5ab8211b 2151
6f97dba0
AL		 2152/***********************************************************/
2153/* UDP Net console */
2154
2155typedef struct {
2156 int fd;
76a9644b 2157 GIOChannel *chan;
9bd7854e 2158 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2159 int bufcnt;
2160 int bufptr;
2161 int max_size;
2162} NetCharDriver;
2163
2164static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2165{
2166 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2167 gsize bytes_written;
2168 GIOStatus status;
2169
2170 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2171 if (status == G_IO_STATUS_EOF) {
2172 return 0;
2173 } else if (status != G_IO_STATUS_NORMAL) {
2174 return -1;
2175 }
6f97dba0 2176
76a9644b 2177 return bytes_written;
6f97dba0
AL		 2178}
2179
2180static int udp_chr_read_poll(void *opaque)
2181{
2182 CharDriverState *chr = opaque;
2183 NetCharDriver *s = chr->opaque;
2184
909cda12 2185 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2186
2187 /* If there were any stray characters in the queue process them
2188 * first
2189 */
2190 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2191 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2192 s->bufptr++;
909cda12 2193 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2194 }
2195 return s->max_size;
2196}
2197
76a9644b 2198static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2199{
2200 CharDriverState *chr = opaque;
2201 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2202 gsize bytes_read = 0;
2203 GIOStatus status;
6f97dba0 2204
cdbf6e16
PB		 2205 if (s->max_size == 0) {
2206 return TRUE;
2207 }
76a9644b
AL		 2208 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2209 &bytes_read, NULL);
2210 s->bufcnt = bytes_read;
6f97dba0 2211 s->bufptr = s->bufcnt;
76a9644b 2212 if (status != G_IO_STATUS_NORMAL) {
26da70c7 2213 remove_fd_in_watch(chr);
76a9644b
AL		 2214 return FALSE;
2215 }
6f97dba0
AL		 2216
2217 s->bufptr = 0;
2218 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2219 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2220 s->bufptr++;
909cda12 2221 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2222 }
76a9644b
AL		 2223
2224 return TRUE;
6f97dba0
AL		 2225}
2226
2227static void udp_chr_update_read_handler(CharDriverState *chr)
2228{
2229 NetCharDriver *s = chr->opaque;
2230
26da70c7 2231 remove_fd_in_watch(chr);
76a9644b 2232 if (s->chan) {
7ba9addc
AS		 2233 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2234 udp_chr_read, chr);
6f97dba0
AL		 2235 }
2236}
2237
819f56b7
AL		 2238static void udp_chr_close(CharDriverState *chr)
2239{
2240 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2241
2242 remove_fd_in_watch(chr);
76a9644b
AL		 2243 if (s->chan) {
2244 g_io_channel_unref(s->chan);
819f56b7
AL		 2245 closesocket(s->fd);
2246 }
7267c094 2247 g_free(s);
a425d23f 2248 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2249}
2250
3ecc059d 2251static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2252{
2253 CharDriverState *chr = NULL;
2254 NetCharDriver *s = NULL;
6f97dba0 2255
7267c094
AL		 2256 chr = g_malloc0(sizeof(CharDriverState));
2257 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2258
6f97dba0 2259 s->fd = fd;
76a9644b 2260 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2261 s->bufcnt = 0;
2262 s->bufptr = 0;
2263 chr->opaque = s;
2264 chr->chr_write = udp_chr_write;
2265 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2266 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2267 /* be isn't opened until we get a connection */
2268 chr->explicit_be_open = true;
1f51470d 2269 return chr;
3ecc059d 2270}
6f97dba0 2271
3ecc059d
GH		 2272static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2273{
2274 Error *local_err = NULL;
2275 int fd = -1;
2276
2277 fd = inet_dgram_opts(opts, &local_err);
2278 if (fd < 0) {
58a3714c
GH		 2279 qerror_report_err(local_err);
2280 error_free(local_err);
3ecc059d 2281 return NULL;
6e1db57b 2282 }
3ecc059d 2283 return qemu_chr_open_udp_fd(fd);
6f97dba0
AL		 2284}
2285
2286/***********************************************************/
2287/* TCP Net console */
2288
2289typedef struct {
2ea5a7af
AL		 2290
2291 GIOChannel *chan, *listen_chan;
7ba9addc 2292 guint listen_tag;
6f97dba0
AL		 2293 int fd, listen_fd;
2294 int connected;
2295 int max_size;
2296 int do_telnetopt;
2297 int do_nodelay;
2298 int is_unix;
7d174059 2299 int msgfd;
6f97dba0
AL		 2300} TCPCharDriver;
2301
2ea5a7af 2302static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0
AL		 2303
2304static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2305{
2306 TCPCharDriver *s = chr->opaque;
2307 if (s->connected) {
684a096e 2308 return io_channel_send(s->chan, buf, len);
455aa1e0 2309 } else {
6db0fdce 2310 /* XXX: indicate an error ? */
455aa1e0 2311 return len;
6f97dba0
AL		 2312 }
2313}
2314
2315static int tcp_chr_read_poll(void *opaque)
2316{
2317 CharDriverState *chr = opaque;
2318 TCPCharDriver *s = chr->opaque;
2319 if (!s->connected)
2320 return 0;
909cda12 2321 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2322 return s->max_size;
2323}
2324
2325#define IAC 255
2326#define IAC_BREAK 243
2327static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2328 TCPCharDriver *s,
2329 uint8_t *buf, int *size)
2330{
2331 /* Handle any telnet client's basic IAC options to satisfy char by
2332 * char mode with no echo. All IAC options will be removed from
2333 * the buf and the do_telnetopt variable will be used to track the
2334 * state of the width of the IAC information.
2335 *
2336 * IAC commands come in sets of 3 bytes with the exception of the
2337 * "IAC BREAK" command and the double IAC.
2338 */
2339
2340 int i;
2341 int j = 0;
2342
2343 for (i = 0; i < *size; i++) {
2344 if (s->do_telnetopt > 1) {
2345 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2346 /* Double IAC means send an IAC */
2347 if (j != i)
2348 buf[j] = buf[i];
2349 j++;
2350 s->do_telnetopt = 1;
2351 } else {
2352 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2353 /* Handle IAC break commands by sending a serial break */
a425d23f 2354 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2355 s->do_telnetopt++;
2356 }
2357 s->do_telnetopt++;
2358 }
2359 if (s->do_telnetopt >= 4) {
2360 s->do_telnetopt = 1;
2361 }
2362 } else {
2363 if ((unsigned char)buf[i] == IAC) {
2364 s->do_telnetopt = 2;
2365 } else {
2366 if (j != i)
2367 buf[j] = buf[i];
2368 j++;
2369 }
2370 }
2371 }
2372 *size = j;
2373}
2374
7d174059
MM		 2375static int tcp_get_msgfd(CharDriverState *chr)
2376{
2377 TCPCharDriver *s = chr->opaque;
e53f27b9
PB		 2378 int fd = s->msgfd;
2379 s->msgfd = -1;
2380 return fd;
7d174059
MM		 2381}
2382
73bcc2ac 2383#ifndef _WIN32
7d174059
MM		 2384static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2385{
2386 TCPCharDriver *s = chr->opaque;
2387 struct cmsghdr *cmsg;
2388
2389 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2390 int fd;
2391
2392 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2393 cmsg->cmsg_level != SOL_SOCKET ||
2394 cmsg->cmsg_type != SCM_RIGHTS)
2395 continue;
2396
2397 fd = *((int *)CMSG_DATA(cmsg));
2398 if (fd < 0)
2399 continue;
2400
9b938c72
SH		 2401 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2402 qemu_set_block(fd);
2403
06138651
CB		 2404#ifndef MSG_CMSG_CLOEXEC
2405 qemu_set_cloexec(fd);
2406#endif
7d174059
MM		 2407 if (s->msgfd != -1)
2408 close(s->msgfd);
2409 s->msgfd = fd;
2410 }
2411}
2412
9977c894
MM		 2413static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2414{
2415 TCPCharDriver *s = chr->opaque;
7cba04f6 2416 struct msghdr msg = { NULL, };
9977c894 2417 struct iovec iov[1];
7d174059
MM		 2418 union {
2419 struct cmsghdr cmsg;
2420 char control[CMSG_SPACE(sizeof(int))];
2421 } msg_control;
06138651 2422 int flags = 0;
7d174059 2423 ssize_t ret;
9977c894
MM		 2424
2425 iov[0].iov_base = buf;
2426 iov[0].iov_len = len;
2427
2428 msg.msg_iov = iov;
2429 msg.msg_iovlen = 1;
7d174059
MM		 2430 msg.msg_control = &msg_control;
2431 msg.msg_controllen = sizeof(msg_control);
2432
06138651
CB		 2433#ifdef MSG_CMSG_CLOEXEC
2434 flags |= MSG_CMSG_CLOEXEC;
2435#endif
2436 ret = recvmsg(s->fd, &msg, flags);
2437 if (ret > 0 && s->is_unix) {
7d174059 2438 unix_process_msgfd(chr, &msg);
06138651 2439 }
9977c894 2440
7d174059 2441 return ret;
9977c894
MM		 2442}
2443#else
2444static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2445{
2446 TCPCharDriver *s = chr->opaque;
00aa0040 2447 return qemu_recv(s->fd, buf, len, 0);
9977c894
MM		 2448}
2449#endif
2450
d3cc5bc4
AS		 2451static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2452{
2453 TCPCharDriver *s = chr->opaque;
2454 return g_io_create_watch(s->chan, cond);
2455}
2456
2ea5a7af 2457static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2458{
2459 CharDriverState *chr = opaque;
2460 TCPCharDriver *s = chr->opaque;
9bd7854e 2461 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2462 int len, size;
2463
2ea5a7af 2464 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2465 return TRUE;
2ea5a7af 2466 }
6f97dba0
AL		 2467 len = sizeof(buf);
2468 if (len > s->max_size)
2469 len = s->max_size;
9977c894 2470 size = tcp_chr_recv(chr, (void *)buf, len);
6f97dba0
AL		 2471 if (size == 0) {
2472 /* connection closed */
2473 s->connected = 0;
2ea5a7af
AL		 2474 if (s->listen_chan) {
2475 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
6f97dba0 2476 }
26da70c7 2477 remove_fd_in_watch(chr);
2ea5a7af
AL		 2478 g_io_channel_unref(s->chan);
2479 s->chan = NULL;
6f97dba0
AL		 2480 closesocket(s->fd);
2481 s->fd = -1;
a425d23f 2482 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2483 } else if (size > 0) {
2484 if (s->do_telnetopt)
2485 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2486 if (size > 0)
fa5efccb 2487 qemu_chr_be_write(chr, buf, size);
6f97dba0 2488 }
2ea5a7af
AL		 2489
2490 return TRUE;
6f97dba0
AL		 2491}
2492
68c18d1c
BS		 2493#ifndef _WIN32
2494CharDriverState *qemu_chr_open_eventfd(int eventfd)
2495{
6cbf4c8c 2496 return qemu_chr_open_fd(eventfd, eventfd);
6cbf4c8c 2497}
68c18d1c 2498#endif
6cbf4c8c 2499
6f97dba0
AL		 2500static void tcp_chr_connect(void *opaque)
2501{
2502 CharDriverState *chr = opaque;
2503 TCPCharDriver *s = chr->opaque;
2504
2505 s->connected = 1;
2ea5a7af 2506 if (s->chan) {
7ba9addc
AS		 2507 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2508 tcp_chr_read, chr);
bbdd2ad0 2509 }
fee204fd 2510 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2511}
2512
ac1b84dd
GH		 2513static void tcp_chr_update_read_handler(CharDriverState *chr)
2514{
2515 TCPCharDriver *s = chr->opaque;
2516
2517 remove_fd_in_watch(chr);
2518 if (s->chan) {
2519 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2520 tcp_chr_read, chr);
2521 }
2522}
2523
6f97dba0
AL		 2524#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2525static void tcp_chr_telnet_init(int fd)
2526{
2527 char buf[3];
2528 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2529 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2530 send(fd, (char *)buf, 3, 0);
2531 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2532 send(fd, (char *)buf, 3, 0);
2533 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2534 send(fd, (char *)buf, 3, 0);
2535 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2536 send(fd, (char *)buf, 3, 0);
2537}
2538
13661089
DB		 2539static int tcp_chr_add_client(CharDriverState *chr, int fd)
2540{
2541 TCPCharDriver *s = chr->opaque;
2542 if (s->fd != -1)
2543 return -1;
2544
f9e8cacc 2545 qemu_set_nonblock(fd);
13661089
DB		 2546 if (s->do_nodelay)
2547 socket_set_nodelay(fd);
2548 s->fd = fd;
2ea5a7af 2549 s->chan = io_channel_from_socket(fd);
910b6368
PB		 2550 if (s->listen_tag) {
2551 g_source_remove(s->listen_tag);
2552 s->listen_tag = 0;
2553 }
13661089
DB		 2554 tcp_chr_connect(chr);
2555
2556 return 0;
2557}
2558
2ea5a7af 2559static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
6f97dba0
AL		 2560{
2561 CharDriverState *chr = opaque;
2562 TCPCharDriver *s = chr->opaque;
2563 struct sockaddr_in saddr;
2564#ifndef _WIN32
2565 struct sockaddr_un uaddr;
2566#endif
2567 struct sockaddr *addr;
2568 socklen_t len;
2569 int fd;
2570
2571 for(;;) {
2572#ifndef _WIN32
2573 if (s->is_unix) {
2574 len = sizeof(uaddr);
2575 addr = (struct sockaddr *)&uaddr;
2576 } else
2577#endif
2578 {
2579 len = sizeof(saddr);
2580 addr = (struct sockaddr *)&saddr;
2581 }
40ff6d7e 2582 fd = qemu_accept(s->listen_fd, addr, &len);
6f97dba0 2583 if (fd < 0 && errno != EINTR) {
79f20075 2584 s->listen_tag = 0;
2ea5a7af 2585 return FALSE;
6f97dba0
AL		 2586 } else if (fd >= 0) {
2587 if (s->do_telnetopt)
2588 tcp_chr_telnet_init(fd);
2589 break;
2590 }
2591 }
13661089
DB		 2592 if (tcp_chr_add_client(chr, fd) < 0)
2593 close(fd);
2ea5a7af
AL		 2594
2595 return TRUE;
6f97dba0
AL		 2596}
2597
2598static void tcp_chr_close(CharDriverState *chr)
2599{
2600 TCPCharDriver *s = chr->opaque;
819f56b7 2601 if (s->fd >= 0) {
26da70c7 2602 remove_fd_in_watch(chr);
2ea5a7af
AL		 2603 if (s->chan) {
2604 g_io_channel_unref(s->chan);
2605 }
6f97dba0 2606 closesocket(s->fd);
819f56b7
AL		 2607 }
2608 if (s->listen_fd >= 0) {
2ea5a7af
AL		 2609 if (s->listen_tag) {
2610 g_source_remove(s->listen_tag);
910b6368 2611 s->listen_tag = 0;
2ea5a7af
AL		 2612 }
2613 if (s->listen_chan) {
2614 g_io_channel_unref(s->listen_chan);
2615 }
6f97dba0 2616 closesocket(s->listen_fd);
819f56b7 2617 }
7267c094 2618 g_free(s);
a425d23f 2619 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2620}
2621
f6bd5d6e
GH		 2622static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2623 bool is_listen, bool is_telnet,
2624 bool is_waitconnect,
2625 Error **errp)
6f97dba0
AL		 2626{
2627 CharDriverState *chr = NULL;
2628 TCPCharDriver *s = NULL;
f6bd5d6e
GH		 2629 char host[NI_MAXHOST], serv[NI_MAXSERV];
2630 const char *left = "", *right = "";
2631 struct sockaddr_storage ss;
2632 socklen_t ss_len = sizeof(ss);
2633
2634 memset(&ss, 0, ss_len);
2635 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
20c39760 2636 error_setg_errno(errp, errno, "getsockname");
f6bd5d6e
GH		 2637 return NULL;
2638 }
2639
2640 chr = g_malloc0(sizeof(CharDriverState));
2641 s = g_malloc0(sizeof(TCPCharDriver));
2642
2643 s->connected = 0;
2644 s->fd = -1;
2645 s->listen_fd = -1;
2646 s->msgfd = -1;
2647
2648 chr->filename = g_malloc(256);
2649 switch (ss.ss_family) {
2650#ifndef _WIN32
2651 case AF_UNIX:
2652 s->is_unix = 1;
2653 snprintf(chr->filename, 256, "unix:%s%s",
2654 ((struct sockaddr_un *)(&ss))->sun_path,
2655 is_listen ? ",server" : "");
2656 break;
2657#endif
2658 case AF_INET6:
2659 left = "[";
2660 right = "]";
2661 /* fall through */
2662 case AF_INET:
2663 s->do_nodelay = do_nodelay;
2664 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2665 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
e5545854 2666 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
f6bd5d6e
GH		 2667 is_telnet ? "telnet" : "tcp",
2668 left, host, right, serv,
2669 is_listen ? ",server" : "");
2670 break;
2671 }
2672
2673 chr->opaque = s;
2674 chr->chr_write = tcp_chr_write;
2675 chr->chr_close = tcp_chr_close;
2676 chr->get_msgfd = tcp_get_msgfd;
2677 chr->chr_add_client = tcp_chr_add_client;
d3cc5bc4 2678 chr->chr_add_watch = tcp_chr_add_watch;
ac1b84dd 2679 chr->chr_update_read_handler = tcp_chr_update_read_handler;
bd5c51ee
MR		 2680 /* be isn't opened until we get a connection */
2681 chr->explicit_be_open = true;
f6bd5d6e
GH		 2682
2683 if (is_listen) {
2684 s->listen_fd = fd;
2ea5a7af
AL		 2685 s->listen_chan = io_channel_from_socket(s->listen_fd);
2686 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
f6bd5d6e
GH		 2687 if (is_telnet) {
2688 s->do_telnetopt = 1;
2689 }
2690 } else {
2691 s->connected = 1;
2692 s->fd = fd;
2693 socket_set_nodelay(fd);
2ea5a7af 2694 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 2695 tcp_chr_connect(chr);
2696 }
2697
2698 if (is_listen && is_waitconnect) {
fdca2124
GH		 2699 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2700 chr->filename);
2ea5a7af 2701 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
f9e8cacc 2702 qemu_set_nonblock(s->listen_fd);
f6bd5d6e
GH		 2703 }
2704 return chr;
2705}
2706
2707static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2708{
2709 CharDriverState *chr = NULL;
87d5f24f 2710 Error *local_err = NULL;
aeb2c47a 2711 int fd = -1;
e990a393
LG		 2712
2713 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2714 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2715 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2716 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2717 bool is_unix = qemu_opt_get(opts, "path") != NULL;
6f97dba0 2718
f07b6003
AL		 2719 if (is_unix) {
2720 if (is_listen) {
87d5f24f 2721 fd = unix_listen_opts(opts, &local_err);
f07b6003 2722 } else {
87d5f24f 2723 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2724 }
2725 } else {
2726 if (is_listen) {
87d5f24f 2727 fd = inet_listen_opts(opts, 0, &local_err);
f07b6003 2728 } else {
87d5f24f 2729 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2730 }
2731 }
a89dd6c3 2732 if (fd < 0) {
6f97dba0 2733 goto fail;
a89dd6c3 2734 }
6f97dba0
AL		 2735
2736 if (!is_waitconnect)
f9e8cacc 2737 qemu_set_nonblock(fd);
6f97dba0 2738
f6bd5d6e
GH		 2739 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2740 is_waitconnect, &local_err);
84d18f06 2741 if (local_err) {
f6bd5d6e 2742 goto fail;
6f97dba0 2743 }
1f51470d 2744 return chr;
aeb2c47a 2745
f6bd5d6e 2746
6f97dba0 2747 fail:
87d5f24f
PB		 2748 if (local_err) {
2749 qerror_report_err(local_err);
2750 error_free(local_err);
2751 }
2752 if (fd >= 0) {
6f97dba0 2753 closesocket(fd);
87d5f24f 2754 }
f6bd5d6e
GH		 2755 if (chr) {
2756 g_free(chr->opaque);
2757 g_free(chr);
2758 }
1f51470d 2759 return NULL;
6f97dba0
AL		 2760}
2761
51767e7c 2762/*********************************************************/
3949e594 2763/* Ring buffer chardev */
51767e7c
LL		 2764
2765typedef struct {
2766 size_t size;
2767 size_t prod;
2768 size_t cons;
2769 uint8_t *cbuf;
3949e594 2770} RingBufCharDriver;
51767e7c 2771
3949e594 2772static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 2773{
3949e594 2774 const RingBufCharDriver *d = chr->opaque;
51767e7c 2775
5c230105 2776 return d->prod - d->cons;
51767e7c
LL		 2777}
2778
3949e594 2779static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 2780{
3949e594 2781 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2782 int i;
2783
2784 if (!buf || (len < 0)) {
2785 return -1;
2786 }
2787
2788 for (i = 0; i < len; i++ ) {
5c230105
MA		 2789 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2790 if (d->prod - d->cons > d->size) {
51767e7c
LL		 2791 d->cons = d->prod - d->size;
2792 }
2793 }
2794
2795 return 0;
2796}
2797
3949e594 2798static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 2799{
3949e594 2800 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2801 int i;
2802
5c230105
MA		 2803 for (i = 0; i < len && d->cons != d->prod; i++) {
2804 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c
LL		 2805 }
2806
2807 return i;
2808}
2809
3949e594 2810static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 2811{
3949e594 2812 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2813
2814 g_free(d->cbuf);
2815 g_free(d);
2816 chr->opaque = NULL;
2817}
2818
4f57378f
MA		 2819static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2820 Error **errp)
51767e7c
LL		 2821{
2822 CharDriverState *chr;
3949e594 2823 RingBufCharDriver *d;
51767e7c
LL		 2824
2825 chr = g_malloc0(sizeof(CharDriverState));
2826 d = g_malloc(sizeof(*d));
2827
1da48c65 2828 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 2829
2830 /* The size must be power of 2 */
2831 if (d->size & (d->size - 1)) {
4f57378f 2832 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 2833 goto fail;
2834 }
2835
2836 d->prod = 0;
2837 d->cons = 0;
2838 d->cbuf = g_malloc0(d->size);
2839
2840 chr->opaque = d;
3949e594
MA		 2841 chr->chr_write = ringbuf_chr_write;
2842 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 2843
2844 return chr;
2845
2846fail:
2847 g_free(d);
2848 g_free(chr);
2849 return NULL;
2850}
2851
3949e594 2852static bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 2853{
3949e594 2854 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 2855}
2856
3949e594 2857void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 2858 bool has_format, enum DataFormat format,
1f590cf9
LL		 2859 Error **errp)
2860{
2861 CharDriverState *chr;
c4f331b6 2862 const uint8_t *write_data;
1f590cf9 2863 int ret;
3d1bba20 2864 gsize write_count;
1f590cf9
LL		 2865
2866 chr = qemu_chr_find(device);
2867 if (!chr) {
1a69278e 2868 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 2869 return;
2870 }
2871
3949e594
MA		 2872 if (!chr_is_ringbuf(chr)) {
2873 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 2874 return;
2875 }
2876
1f590cf9
LL		 2877 if (has_format && (format == DATA_FORMAT_BASE64)) {
2878 write_data = g_base64_decode(data, &write_count);
2879 } else {
2880 write_data = (uint8_t *)data;
82e59a67 2881 write_count = strlen(data);
1f590cf9
LL		 2882 }
2883
3949e594 2884 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 2885
13289fb5
MA		 2886 if (write_data != (uint8_t *)data) {
2887 g_free((void *)write_data);
2888 }
2889
1f590cf9
LL		 2890 if (ret < 0) {
2891 error_setg(errp, "Failed to write to device %s", device);
2892 return;
2893 }
2894}
2895
3949e594 2896char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 2897 bool has_format, enum DataFormat format,
2898 Error **errp)
49b6d722
LL		 2899{
2900 CharDriverState *chr;
c4f331b6 2901 uint8_t *read_data;
49b6d722 2902 size_t count;
3ab651fc 2903 char *data;
49b6d722
LL		 2904
2905 chr = qemu_chr_find(device);
2906 if (!chr) {
1a69278e 2907 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 2908 return NULL;
2909 }
2910
3949e594
MA		 2911 if (!chr_is_ringbuf(chr)) {
2912 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 2913 return NULL;
2914 }
2915
2916 if (size <= 0) {
2917 error_setg(errp, "size must be greater than zero");
2918 return NULL;
2919 }
2920
3949e594 2921 count = ringbuf_count(chr);
49b6d722 2922 size = size > count ? count : size;
44f3bcd2 2923 read_data = g_malloc(size + 1);
49b6d722 2924
3949e594 2925 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 2926
2927 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 2928 data = g_base64_encode(read_data, size);
13289fb5 2929 g_free(read_data);
49b6d722 2930 } else {
3949e594
MA		 2931 /*
2932 * FIXME should read only complete, valid UTF-8 characters up
2933 * to @size bytes. Invalid sequences should be replaced by a
2934 * suitable replacement character. Except when (and only
2935 * when) ring buffer lost characters since last read, initial
2936 * continuation characters should be dropped.
2937 */
44f3bcd2 2938 read_data[size] = 0;
3ab651fc 2939 data = (char *)read_data;
49b6d722
LL		 2940 }
2941
3ab651fc 2942 return data;
49b6d722
LL		 2943}
2944
33521634 2945QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 2946{
6ea314d9 2947 char host[65], port[33], width[8], height[8];
aeb2c47a 2948 int pos;
7d31544f 2949 const char *p;
191bc01b 2950 QemuOpts *opts;
8be7e7e4 2951 Error *local_err = NULL;
191bc01b 2952
8be7e7e4 2953 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 2954 if (local_err) {
8be7e7e4
LC		 2955 qerror_report_err(local_err);
2956 error_free(local_err);
191bc01b 2957 return NULL;
8be7e7e4 2958 }
191bc01b 2959
7591c5c1
GH		 2960 if (strstart(filename, "mon:", &p)) {
2961 filename = p;
2962 qemu_opt_set(opts, "mux", "on");
02c4bdf1
PB		 2963 if (strcmp(filename, "stdio") == 0) {
2964 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
2965 * but pass it to the guest. Handle this only for compat syntax,
2966 * for -chardev syntax we have special option for this.
2967 * This is what -nographic did, redirecting+muxing serial+monitor
2968 * to stdio causing Ctrl+C to be passed to guest. */
2969 qemu_opt_set(opts, "signal", "off");
2970 }
7591c5c1
GH		 2971 }
2972
f0457e8d
GH		 2973 if (strcmp(filename, "null") == 0 ||
2974 strcmp(filename, "pty") == 0 ||
2975 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 2976 strcmp(filename, "braille") == 0 ||
f0457e8d 2977 strcmp(filename, "stdio") == 0) {
4490dadf 2978 qemu_opt_set(opts, "backend", filename);
191bc01b
GH		 2979 return opts;
2980 }
6ea314d9
GH		 2981 if (strstart(filename, "vc", &p)) {
2982 qemu_opt_set(opts, "backend", "vc");
2983 if (*p == ':') {
49aa4058 2984 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9
GH		 2985 /* pixels */
2986 qemu_opt_set(opts, "width", width);
2987 qemu_opt_set(opts, "height", height);
49aa4058 2988 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9
GH		 2989 /* chars */
2990 qemu_opt_set(opts, "cols", width);
2991 qemu_opt_set(opts, "rows", height);
2992 } else {
2993 goto fail;
2994 }
2995 }
2996 return opts;
2997 }
d6c983cd
GH		 2998 if (strcmp(filename, "con:") == 0) {
2999 qemu_opt_set(opts, "backend", "console");
3000 return opts;
3001 }
48b76496
GH		 3002 if (strstart(filename, "COM", NULL)) {
3003 qemu_opt_set(opts, "backend", "serial");
3004 qemu_opt_set(opts, "path", filename);
3005 return opts;
3006 }
7d31544f
GH		 3007 if (strstart(filename, "file:", &p)) {
3008 qemu_opt_set(opts, "backend", "file");
3009 qemu_opt_set(opts, "path", p);
3010 return opts;
3011 }
3012 if (strstart(filename, "pipe:", &p)) {
3013 qemu_opt_set(opts, "backend", "pipe");
3014 qemu_opt_set(opts, "path", p);
3015 return opts;
3016 }
aeb2c47a
GH		 3017 if (strstart(filename, "tcp:", &p) ||
3018 strstart(filename, "telnet:", &p)) {
3019 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3020 host[0] = 0;
3021 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3022 goto fail;
3023 }
3024 qemu_opt_set(opts, "backend", "socket");
3025 qemu_opt_set(opts, "host", host);
3026 qemu_opt_set(opts, "port", port);
3027 if (p[pos] == ',') {
3028 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3029 goto fail;
3030 }
3031 if (strstart(filename, "telnet:", &p))
3032 qemu_opt_set(opts, "telnet", "on");
3033 return opts;
3034 }
7e1b35b4
GH		 3035 if (strstart(filename, "udp:", &p)) {
3036 qemu_opt_set(opts, "backend", "udp");
3037 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3038 host[0] = 0;
39324ca4 3039 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3040 goto fail;
3041 }
3042 }
3043 qemu_opt_set(opts, "host", host);
3044 qemu_opt_set(opts, "port", port);
3045 if (p[pos] == '@') {
3046 p += pos + 1;
3047 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3048 host[0] = 0;
3049 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3050 goto fail;
3051 }
3052 }
3053 qemu_opt_set(opts, "localaddr", host);
3054 qemu_opt_set(opts, "localport", port);
3055 }
3056 return opts;
3057 }
aeb2c47a
GH		 3058 if (strstart(filename, "unix:", &p)) {
3059 qemu_opt_set(opts, "backend", "socket");
3060 if (qemu_opts_do_parse(opts, p, "path") != 0)
3061 goto fail;
3062 return opts;
3063 }
48b76496
GH		 3064 if (strstart(filename, "/dev/parport", NULL) ||
3065 strstart(filename, "/dev/ppi", NULL)) {
3066 qemu_opt_set(opts, "backend", "parport");
3067 qemu_opt_set(opts, "path", filename);
3068 return opts;
3069 }
3070 if (strstart(filename, "/dev/", NULL)) {
3071 qemu_opt_set(opts, "backend", "tty");
3072 qemu_opt_set(opts, "path", filename);
3073 return opts;
3074 }
191bc01b 3075
aeb2c47a 3076fail:
191bc01b
GH		 3077 qemu_opts_del(opts);
3078 return NULL;
3079}
3080
846e2e49
GH		 3081static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3082 Error **errp)
3083{
3084 const char *path = qemu_opt_get(opts, "path");
3085
3086 if (path == NULL) {
3087 error_setg(errp, "chardev: file: no filename given");
3088 return;
3089 }
3090 backend->file = g_new0(ChardevFile, 1);
3091 backend->file->out = g_strdup(path);
3092}
3093
7c358031
GH		 3094static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3095 Error **errp)
3096{
3097 backend->stdio = g_new0(ChardevStdio, 1);
3098 backend->stdio->has_signal = true;
02c4bdf1 3099 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3100}
3101
0f1cb51d
GH		 3102static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3103 Error **errp)
3104{
3105 const char *device = qemu_opt_get(opts, "path");
3106
3107 if (device == NULL) {
3108 error_setg(errp, "chardev: serial/tty: no device path given");
3109 return;
3110 }
3111 backend->serial = g_new0(ChardevHostdev, 1);
3112 backend->serial->device = g_strdup(device);
3113}
3114
dc375097
GH		 3115static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3116 Error **errp)
3117{
3118 const char *device = qemu_opt_get(opts, "path");
3119
3120 if (device == NULL) {
3121 error_setg(errp, "chardev: parallel: no device path given");
3122 return;
3123 }
3124 backend->parallel = g_new0(ChardevHostdev, 1);
3125 backend->parallel->device = g_strdup(device);
3126}
3127
548cbb36
GH		 3128static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3129 Error **errp)
3130{
3131 const char *device = qemu_opt_get(opts, "path");
3132
3133 if (device == NULL) {
3134 error_setg(errp, "chardev: pipe: no device path given");
3135 return;
3136 }
3137 backend->pipe = g_new0(ChardevHostdev, 1);
3138 backend->pipe->device = g_strdup(device);
3139}
3140
4f57378f
MA		 3141static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3142 Error **errp)
1da48c65
GH		 3143{
3144 int val;
3145
3a1da42e 3146 backend->ringbuf = g_new0(ChardevRingbuf, 1);
1da48c65 3147
0f953051 3148 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3149 if (val != 0) {
3a1da42e
MA		 3150 backend->ringbuf->has_size = true;
3151 backend->ringbuf->size = val;
1da48c65
GH		 3152 }
3153}
3154
bb6fb7c0
GH		 3155static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3156 Error **errp)
3157{
3158 const char *chardev = qemu_opt_get(opts, "chardev");
3159
3160 if (chardev == NULL) {
3161 error_setg(errp, "chardev: mux: no chardev given");
3162 return;
3163 }
3164 backend->mux = g_new0(ChardevMux, 1);
3165 backend->mux->chardev = g_strdup(chardev);
3166}
3167
d654f34e 3168typedef struct CharDriver {
191bc01b 3169 const char *name;
2c5f4882 3170 /* old, pre qapi */
1f51470d 3171 CharDriverState *(*open)(QemuOpts *opts);
2c5f4882 3172 /* new, qapi-based */
99aec012 3173 ChardevBackendKind kind;
2c5f4882 3174 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3175} CharDriver;
3176
3177static GSList *backends;
3178
3179void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3180{
3181 CharDriver *s;
3182
3183 s = g_malloc0(sizeof(*s));
3184 s->name = g_strdup(name);
3185 s->open = open;
3186
3187 backends = g_slist_append(backends, s);
3188}
191bc01b 3189
99aec012 3190void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
2c5f4882
GH		 3191 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3192{
3193 CharDriver *s;
3194
3195 s = g_malloc0(sizeof(*s));
3196 s->name = g_strdup(name);
3197 s->kind = kind;
3198 s->parse = parse;
3199
3200 backends = g_slist_append(backends, s);
3201}
3202
f69554b9 3203CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3204 void (*init)(struct CharDriverState *s),
3205 Error **errp)
191bc01b 3206{
d654f34e 3207 CharDriver *cd;
191bc01b 3208 CharDriverState *chr;
d654f34e 3209 GSList *i;
191bc01b
GH		 3210
3211 if (qemu_opts_id(opts) == NULL) {
312fd5f2 3212 error_setg(errp, "chardev: no id specified");
2274ae9d 3213 goto err;
191bc01b
GH		 3214 }
3215
1bbd185f 3216 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3217 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3218 qemu_opts_id(opts));
2274ae9d 3219 goto err;
1bbd185f 3220 }
d654f34e
AL		 3221 for (i = backends; i; i = i->next) {
3222 cd = i->data;
3223
3224 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3225 break;
d654f34e 3226 }
191bc01b 3227 }
d654f34e 3228 if (i == NULL) {
312fd5f2 3229 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3230 qemu_opt_get(opts, "backend"));
e668287d 3231 goto err;
191bc01b
GH		 3232 }
3233
2c5f4882
GH		 3234 if (!cd->open) {
3235 /* using new, qapi init */
3236 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3237 ChardevReturn *ret = NULL;
3238 const char *id = qemu_opts_id(opts);
dc2c4eca 3239 char *bid = NULL;
edb2fb3c
GH		 3240
3241 if (qemu_opt_get_bool(opts, "mux", 0)) {
3242 bid = g_strdup_printf("%s-base", id);
3243 }
2c5f4882
GH		 3244
3245 chr = NULL;
3246 backend->kind = cd->kind;
3247 if (cd->parse) {
3248 cd->parse(opts, backend, errp);
3249 if (error_is_set(errp)) {
3250 goto qapi_out;
3251 }
3252 }
edb2fb3c 3253 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
2c5f4882
GH		 3254 if (error_is_set(errp)) {
3255 goto qapi_out;
3256 }
edb2fb3c
GH		 3257
3258 if (bid) {
3259 qapi_free_ChardevBackend(backend);
3260 qapi_free_ChardevReturn(ret);
3261 backend = g_new0(ChardevBackend, 1);
3262 backend->mux = g_new0(ChardevMux, 1);
3263 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3264 backend->mux->chardev = g_strdup(bid);
3265 ret = qmp_chardev_add(id, backend, errp);
ee6ee83d
GH		 3266 if (error_is_set(errp)) {
3267 chr = qemu_chr_find(bid);
3268 qemu_chr_delete(chr);
3269 chr = NULL;
3270 goto qapi_out;
3271 }
edb2fb3c
GH		 3272 }
3273
2c5f4882 3274 chr = qemu_chr_find(id);
2ea3e2c1 3275 chr->opts = opts;
2c5f4882
GH		 3276
3277 qapi_out:
3278 qapi_free_ChardevBackend(backend);
3279 qapi_free_ChardevReturn(ret);
dc2c4eca 3280 g_free(bid);
2c5f4882
GH		 3281 return chr;
3282 }
3283
d654f34e 3284 chr = cd->open(opts);
1f51470d 3285 if (!chr) {
312fd5f2 3286 error_setg(errp, "chardev: opening backend \"%s\" failed",
bd2d80b2 3287 qemu_opt_get(opts, "backend"));
2274ae9d 3288 goto err;
191bc01b
GH		 3289 }
3290
3291 if (!chr->filename)
7267c094 3292 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
191bc01b 3293 chr->init = init;
bd5c51ee
MR		 3294 /* if we didn't create the chardev via qmp_chardev_add, we
3295 * need to send the OPENED event here
3296 */
3297 if (!chr->explicit_be_open) {
3298 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3299 }
72cf2d4f 3300 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
7591c5c1
GH		 3301
3302 if (qemu_opt_get_bool(opts, "mux", 0)) {
3303 CharDriverState *base = chr;
3304 int len = strlen(qemu_opts_id(opts)) + 6;
7267c094 3305 base->label = g_malloc(len);
7591c5c1
GH		 3306 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3307 chr = qemu_chr_open_mux(base);
3308 chr->filename = base->filename;
d5b27167 3309 chr->avail_connections = MAX_MUX;
72cf2d4f 3310 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
d5b27167
KK		 3311 } else {
3312 chr->avail_connections = 1;
7591c5c1 3313 }
7267c094 3314 chr->label = g_strdup(qemu_opts_id(opts));
2274ae9d 3315 chr->opts = opts;
191bc01b 3316 return chr;
2274ae9d
GH		 3317
3318err:
3319 qemu_opts_del(opts);
3320 return NULL;
191bc01b
GH		 3321}
3322
27143a44 3323CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3324{
3325 const char *p;
3326 CharDriverState *chr;
191bc01b 3327 QemuOpts *opts;
bd2d80b2 3328 Error *err = NULL;
191bc01b 3329
c845f401
GH		 3330 if (strstart(filename, "chardev:", &p)) {
3331 return qemu_chr_find(p);
3332 }
3333
191bc01b 3334 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3335 if (!opts)
3336 return NULL;
6f97dba0 3337
bd2d80b2 3338 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3339 if (err) {
4a44d85e 3340 error_report("%s", error_get_pretty(err));
bd2d80b2
GH		 3341 error_free(err);
3342 }
7e1b35b4 3343 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3344 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3345 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3346 }
3347 return chr;
3348}
3349
15f31519 3350void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3351{
3352 if (chr->chr_set_echo) {
3353 chr->chr_set_echo(chr, echo);
3354 }
3355}
3356
8e25daa8 3357void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3358{
8e25daa8 3359 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3360 return;
3361 }
8e25daa8 3362 chr->fe_open = fe_open;
574b711a
HG		 3363 if (chr->chr_set_fe_open) {
3364 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3365 }
3366}
3367
d61b0c9a
MAL		 3368void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3369{
3370 if (chr->chr_fe_event) {
3371 chr->chr_fe_event(chr, event);
3372 }
3373}
3374
2c8a5942
KW		 3375int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3376 GIOFunc func, void *user_data)
23673ca7
AL		 3377{
3378 GSource *src;
3379 guint tag;
3380
3381 if (s->chr_add_watch == NULL) {
3382 return -ENOSYS;
3383 }
3384
3385 src = s->chr_add_watch(s, cond);
3386 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3387 tag = g_source_attach(src, NULL);
3388 g_source_unref(src);
3389
3390 return tag;
3391}
3392
44c473de
HG		 3393int qemu_chr_fe_claim(CharDriverState *s)
3394{
3395 if (s->avail_connections < 1) {
3396 return -1;
3397 }
3398 s->avail_connections--;
3399 return 0;
3400}
3401
3402void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3403{
3404 if (qemu_chr_fe_claim(s) != 0) {
3405 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3406 __func__, s->label);
3407 exit(1);
3408 }
3409}
3410
3411void qemu_chr_fe_release(CharDriverState *s)
3412{
3413 s->avail_connections++;
3414}
3415
70f24fb6 3416void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3417{
72cf2d4f 3418 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3419 if (chr->chr_close) {
6f97dba0 3420 chr->chr_close(chr);
2274ae9d 3421 }
7267c094
AL		 3422 g_free(chr->filename);
3423 g_free(chr->label);
2274ae9d
GH		 3424 if (chr->opts) {
3425 qemu_opts_del(chr->opts);
3426 }
7267c094 3427 g_free(chr);
6f97dba0
AL		 3428}
3429
c5a415a0 3430ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3431{
c5a415a0 3432 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3433 CharDriverState *chr;
3434
72cf2d4f 3435 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3436 ChardevInfoList *info = g_malloc0(sizeof(*info));
3437 info->value = g_malloc0(sizeof(*info->value));
3438 info->value->label = g_strdup(chr->label);
3439 info->value->filename = g_strdup(chr->filename);
3440
3441 info->next = chr_list;
3442 chr_list = info;
6f97dba0 3443 }
588b3832 3444
c5a415a0 3445 return chr_list;
6f97dba0 3446}
c845f401 3447
77d1c3c6
MK		 3448ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3449{
3450 ChardevBackendInfoList *backend_list = NULL;
3451 CharDriver *c = NULL;
3452 GSList *i = NULL;
3453
3454 for (i = backends; i; i = i->next) {
3455 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3456 c = i->data;
3457 info->value = g_malloc0(sizeof(*info->value));
3458 info->value->name = g_strdup(c->name);
3459
3460 info->next = backend_list;
3461 backend_list = info;
3462 }
3463
3464 return backend_list;
3465}
3466
c845f401
GH		 3467CharDriverState *qemu_chr_find(const char *name)
3468{
3469 CharDriverState *chr;
3470
72cf2d4f 3471 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3472 if (strcmp(chr->label, name) != 0)
3473 continue;
3474 return chr;
3475 }
3476 return NULL;
3477}
0beb4942
AL		 3478
3479/* Get a character (serial) device interface. */
3480CharDriverState *qemu_char_get_next_serial(void)
3481{
3482 static int next_serial;
456d6069 3483 CharDriverState *chr;
0beb4942
AL		 3484
3485 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3486
3487 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3488 chr = serial_hds[next_serial++];
3489 qemu_chr_fe_claim_no_fail(chr);
3490 return chr;
3491 }
3492 return NULL;
0beb4942
AL		 3493}
3494
4d454574
PB		 3495QemuOptsList qemu_chardev_opts = {
3496 .name = "chardev",
3497 .implied_opt_name = "backend",
3498 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3499 .desc = {
3500 {
3501 .name = "backend",
3502 .type = QEMU_OPT_STRING,
3503 },{
3504 .name = "path",
3505 .type = QEMU_OPT_STRING,
3506 },{
3507 .name = "host",
3508 .type = QEMU_OPT_STRING,
3509 },{
3510 .name = "port",
3511 .type = QEMU_OPT_STRING,
3512 },{
3513 .name = "localaddr",
3514 .type = QEMU_OPT_STRING,
3515 },{
3516 .name = "localport",
3517 .type = QEMU_OPT_STRING,
3518 },{
3519 .name = "to",
3520 .type = QEMU_OPT_NUMBER,
3521 },{
3522 .name = "ipv4",
3523 .type = QEMU_OPT_BOOL,
3524 },{
3525 .name = "ipv6",
3526 .type = QEMU_OPT_BOOL,
3527 },{
3528 .name = "wait",
3529 .type = QEMU_OPT_BOOL,
3530 },{
3531 .name = "server",
3532 .type = QEMU_OPT_BOOL,
3533 },{
3534 .name = "delay",
3535 .type = QEMU_OPT_BOOL,
3536 },{
3537 .name = "telnet",
3538 .type = QEMU_OPT_BOOL,
3539 },{
3540 .name = "width",
3541 .type = QEMU_OPT_NUMBER,
3542 },{
3543 .name = "height",
3544 .type = QEMU_OPT_NUMBER,
3545 },{
3546 .name = "cols",
3547 .type = QEMU_OPT_NUMBER,
3548 },{
3549 .name = "rows",
3550 .type = QEMU_OPT_NUMBER,
3551 },{
3552 .name = "mux",
3553 .type = QEMU_OPT_BOOL,
3554 },{
3555 .name = "signal",
3556 .type = QEMU_OPT_BOOL,
3557 },{
3558 .name = "name",
3559 .type = QEMU_OPT_STRING,
3560 },{
3561 .name = "debug",
3562 .type = QEMU_OPT_NUMBER,
51767e7c 3563 },{
3949e594 3564 .name = "size",
de1cc36e 3565 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 3566 },{
3567 .name = "chardev",
3568 .type = QEMU_OPT_STRING,
4d454574
PB		 3569 },
3570 { /* end of list */ }
3571 },
3572};
f1a1a356 3573
ffbdbe59
GH		 3574#ifdef _WIN32
3575
3576static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3577{
3578 HANDLE out;
3579
e859eda5 3580 if (file->has_in) {
ffbdbe59
GH		 3581 error_setg(errp, "input file not supported");
3582 return NULL;
3583 }
3584
3585 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3586 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3587 if (out == INVALID_HANDLE_VALUE) {
3588 error_setg(errp, "open %s failed", file->out);
3589 return NULL;
3590 }
3591 return qemu_chr_open_win_file(out);
3592}
3593
d36b2b90
MA		 3594static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3595 Error **errp)
d59044ef 3596{
d36b2b90
MA		 3597 return qemu_chr_open_win_path(serial->device);
3598}
3599
3600static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3601 Error **errp)
3602{
3603 error_setg(errp, "character device backend type 'parallel' not supported");
3604 return NULL;
d59044ef
GH		 3605}
3606
ffbdbe59
GH		 3607#else /* WIN32 */
3608
3609static int qmp_chardev_open_file_source(char *src, int flags,
3610 Error **errp)
3611{
3612 int fd = -1;
3613
3614 TFR(fd = qemu_open(src, flags, 0666));
3615 if (fd == -1) {
20c39760 3616 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 3617 }
3618 return fd;
3619}
3620
3621static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3622{
3623 int flags, in = -1, out = -1;
3624
3625 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3626 out = qmp_chardev_open_file_source(file->out, flags, errp);
3627 if (error_is_set(errp)) {
3628 return NULL;
3629 }
3630
e859eda5 3631 if (file->has_in) {
ffbdbe59
GH		 3632 flags = O_RDONLY;
3633 in = qmp_chardev_open_file_source(file->in, flags, errp);
3634 if (error_is_set(errp)) {
3635 qemu_close(out);
3636 return NULL;
3637 }
3638 }
3639
3640 return qemu_chr_open_fd(in, out);
3641}
3642
d36b2b90
MA		 3643static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3644 Error **errp)
d59044ef 3645{
d59044ef 3646#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 3647 int fd;
3648
3649 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3650 if (error_is_set(errp)) {
3651 return NULL;
39099991 3652 }
f9e8cacc 3653 qemu_set_nonblock(fd);
d36b2b90
MA		 3654 return qemu_chr_open_tty_fd(fd);
3655#else
3656 error_setg(errp, "character device backend type 'serial' not supported");
3657 return NULL;
88a946d3 3658#endif
d36b2b90
MA		 3659}
3660
3661static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3662 Error **errp)
3663{
88a946d3 3664#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 3665 int fd;
3666
3667 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3668 if (error_is_set(errp)) {
d59044ef
GH		 3669 return NULL;
3670 }
d36b2b90
MA		 3671 return qemu_chr_open_pp_fd(fd);
3672#else
3673 error_setg(errp, "character device backend type 'parallel' not supported");
3674 return NULL;
3675#endif
d59044ef
GH		 3676}
3677
ffbdbe59
GH		 3678#endif /* WIN32 */
3679
f6bd5d6e
GH		 3680static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3681 Error **errp)
3682{
3683 SocketAddress *addr = sock->addr;
3684 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3685 bool is_listen = sock->has_server ? sock->server : true;
3686 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3687 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3688 int fd;
3689
3690 if (is_listen) {
3691 fd = socket_listen(addr, errp);
3692 } else {
3693 fd = socket_connect(addr, errp, NULL, NULL);
3694 }
3695 if (error_is_set(errp)) {
3696 return NULL;
3697 }
3698 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3699 is_telnet, is_waitconnect, errp);
3700}
3701
08d0ab3f
LL		 3702static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3703 Error **errp)
3ecc059d
GH		 3704{
3705 int fd;
3706
08d0ab3f 3707 fd = socket_dgram(udp->remote, udp->local, errp);
3ecc059d
GH		 3708 if (error_is_set(errp)) {
3709 return NULL;
3710 }
3711 return qemu_chr_open_udp_fd(fd);
3712}
3713
f1a1a356
GH		 3714ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3715 Error **errp)
3716{
3717 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 3718 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 3719
3720 chr = qemu_chr_find(id);
3721 if (chr) {
3722 error_setg(errp, "Chardev '%s' already exists", id);
3723 g_free(ret);
3724 return NULL;
3725 }
3726
3727 switch (backend->kind) {
ffbdbe59
GH		 3728 case CHARDEV_BACKEND_KIND_FILE:
3729 chr = qmp_chardev_open_file(backend->file, errp);
3730 break;
d36b2b90
MA		 3731 case CHARDEV_BACKEND_KIND_SERIAL:
3732 chr = qmp_chardev_open_serial(backend->serial, errp);
3733 break;
3734 case CHARDEV_BACKEND_KIND_PARALLEL:
3735 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 3736 break;
548cbb36
GH		 3737 case CHARDEV_BACKEND_KIND_PIPE:
3738 chr = qemu_chr_open_pipe(backend->pipe);
3739 break;
f6bd5d6e
GH		 3740 case CHARDEV_BACKEND_KIND_SOCKET:
3741 chr = qmp_chardev_open_socket(backend->socket, errp);
3742 break;
08d0ab3f
LL		 3743 case CHARDEV_BACKEND_KIND_UDP:
3744 chr = qmp_chardev_open_udp(backend->udp, errp);
3ecc059d 3745 break;
0a1a7fab
GH		 3746#ifdef HAVE_CHARDEV_TTY
3747 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 3748 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 3749 break;
0a1a7fab 3750#endif
f1a1a356 3751 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 3752 chr = qemu_chr_open_null();
f1a1a356 3753 break;
edb2fb3c
GH		 3754 case CHARDEV_BACKEND_KIND_MUX:
3755 base = qemu_chr_find(backend->mux->chardev);
3756 if (base == NULL) {
3757 error_setg(errp, "mux: base chardev %s not found",
3758 backend->mux->chardev);
3759 break;
3760 }
3761 chr = qemu_chr_open_mux(base);
3762 break;
f5a51cab
GH		 3763 case CHARDEV_BACKEND_KIND_MSMOUSE:
3764 chr = qemu_chr_open_msmouse();
3765 break;
2d57286d
GH		 3766#ifdef CONFIG_BRLAPI
3767 case CHARDEV_BACKEND_KIND_BRAILLE:
3768 chr = chr_baum_init();
3769 break;
3770#endif
7c358031
GH		 3771 case CHARDEV_BACKEND_KIND_STDIO:
3772 chr = qemu_chr_open_stdio(backend->stdio);
3773 break;
d9ac374f
GH		 3774#ifdef _WIN32
3775 case CHARDEV_BACKEND_KIND_CONSOLE:
3776 chr = qemu_chr_open_win_con();
3777 break;
cd153e2a
GH		 3778#endif
3779#ifdef CONFIG_SPICE
3780 case CHARDEV_BACKEND_KIND_SPICEVMC:
3781 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3782 break;
3783 case CHARDEV_BACKEND_KIND_SPICEPORT:
3784 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3785 break;
d9ac374f 3786#endif
702ec69c
GH		 3787 case CHARDEV_BACKEND_KIND_VC:
3788 chr = vc_init(backend->vc);
3789 break;
3a1da42e 3790 case CHARDEV_BACKEND_KIND_RINGBUF:
1da48c65 3791 case CHARDEV_BACKEND_KIND_MEMORY:
3a1da42e 3792 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
1da48c65 3793 break;
f1a1a356
GH		 3794 default:
3795 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3796 break;
3797 }
3798
3799 if (chr == NULL && !error_is_set(errp)) {
3800 error_setg(errp, "Failed to create chardev");
3801 }
3802 if (chr) {
3803 chr->label = g_strdup(id);
edb2fb3c
GH		 3804 chr->avail_connections =
3805 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
60d95386
GH		 3806 if (!chr->filename) {
3807 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
3808 }
bd5c51ee
MR		 3809 if (!chr->explicit_be_open) {
3810 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3811 }
f1a1a356
GH		 3812 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3813 return ret;
3814 } else {
3815 g_free(ret);
3816 return NULL;
3817 }
3818}
3819
3820void qmp_chardev_remove(const char *id, Error **errp)
3821{
3822 CharDriverState *chr;
3823
3824 chr = qemu_chr_find(id);
3825 if (NULL == chr) {
3826 error_setg(errp, "Chardev '%s' not found", id);
3827 return;
3828 }
3829 if (chr->chr_can_read || chr->chr_read ||
3830 chr->chr_event || chr->handler_opaque) {
3831 error_setg(errp, "Chardev '%s' is busy", id);
3832 return;
3833 }
3834 qemu_chr_delete(chr);
3835}
d654f34e
AL		 3836
3837static void register_types(void)
3838{
80dca9e6 3839 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
d654f34e
AL		 3840 register_char_driver("socket", qemu_chr_open_socket);
3841 register_char_driver("udp", qemu_chr_open_udp);
3a1da42e 3842 register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4f57378f 3843 qemu_chr_parse_ringbuf);
846e2e49
GH		 3844 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3845 qemu_chr_parse_file_out);
7c358031
GH		 3846 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3847 qemu_chr_parse_stdio);
0f1cb51d
GH		 3848 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3849 qemu_chr_parse_serial);
3850 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3851 qemu_chr_parse_serial);
dc375097
GH		 3852 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3853 qemu_chr_parse_parallel);
3854 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3855 qemu_chr_parse_parallel);
e68c5958 3856 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
d9ac374f 3857 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
548cbb36
GH		 3858 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3859 qemu_chr_parse_pipe);
bb6fb7c0
GH		 3860 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
3861 qemu_chr_parse_mux);
c11ed966
MA		 3862 /* Bug-compatibility: */
3863 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3864 qemu_chr_parse_ringbuf);
7b7ab18d
MR		 3865 /* this must be done after machine init, since we register FEs with muxes
3866 * as part of realize functions like serial_isa_realizefn when -nographic
3867 * is specified
3868 */
3869 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 3870}
3871
3872type_init(register_types);
Mirror of https://git.qemu.org/git/qemu.git