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