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hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all
[mirror_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 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
37f9e0a2 35#include "qapi/clone-visitor.h"
cfb429cb 36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
517b3d40 42#include "qemu/help_option.h"
6f97dba0 43
6f97dba0
AL		 44#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
6f97dba0 50#include <sys/ioctl.h>
24646c7e 51#include <sys/resource.h>
6f97dba0
AL		 52#include <sys/socket.h>
53#include <netinet/in.h>
24646c7e 54#include <net/if.h>
24646c7e 55#include <arpa/inet.h>
6f97dba0
AL		 56#include <netdb.h>
57#include <sys/select.h>
71e72a19 58#ifdef CONFIG_BSD
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
6f97dba0
AL		 72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
c4095726 90#define TCP_MAX_FDS 16
9bd7854e 91
cfb429cb
CM		 92/***********************************************************/
93/* Socket address helpers */
cfb429cb 94
0ff0fad2
DB		 95static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
96 bool is_listen, bool is_telnet)
16cc4ffe 97{
130257dc 98 switch (addr->type) {
16cc4ffe 99 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 100 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 101 is_telnet ? "telnet" : "tcp",
102 addr->u.inet.data->host,
103 addr->u.inet.data->port,
104 is_listen ? ",server" : "");
16cc4ffe
CM		 105 break;
106 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 107 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 108 addr->u.q_unix.data->path,
0ff0fad2 109 is_listen ? ",server" : "");
16cc4ffe
CM		 110 break;
111 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 112 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 113 is_listen ? ",server" : "");
16cc4ffe
CM		 114 break;
115 default:
116 abort();
117 }
118}
119
0ff0fad2
DB		 120static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
121 struct sockaddr_storage *ps, socklen_t ps_len,
122 bool is_listen, bool is_telnet)
16cc4ffe 123{
01ca519f
CM		 124 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
125 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 126 const char *left = "", *right = "";
127
128 switch (ss->ss_family) {
129#ifndef _WIN32
130 case AF_UNIX:
0ff0fad2
DB		 131 return g_strdup_printf("unix:%s%s",
132 ((struct sockaddr_un *)(ss))->sun_path,
133 is_listen ? ",server" : "");
16cc4ffe
CM		 134#endif
135 case AF_INET6:
136 left = "[";
137 right = "]";
138 /* fall through */
139 case AF_INET:
01ca519f
CM		 140 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
141 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
142 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
143 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 144 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
145 is_telnet ? "telnet" : "tcp",
146 left, shost, right, sserv,
147 is_listen ? ",server" : "",
148 left, phost, right, pserv);
16cc4ffe
CM		 149
150 default:
0ff0fad2 151 return g_strdup_printf("unknown");
16cc4ffe
CM		 152 }
153}
154
6f97dba0
AL		 155/***********************************************************/
156/* character device */
157
72cf2d4f
BS		 158static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
159 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 160
d0d7708b
DB		 161static void qemu_chr_free_common(CharDriverState *chr);
162
163CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 164{
165 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 166 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 167
168 if (backend->has_logfile) {
169 int flags = O_WRONLY | O_CREAT;
170 if (backend->has_logappend &&
171 backend->logappend) {
172 flags |= O_APPEND;
173 } else {
174 flags |= O_TRUNC;
175 }
176 chr->logfd = qemu_open(backend->logfile, flags, 0666);
177 if (chr->logfd < 0) {
178 error_setg_errno(errp, errno,
179 "Unable to open logfile %s",
180 backend->logfile);
181 g_free(chr);
182 return NULL;
183 }
184 } else {
185 chr->logfd = -1;
186 }
187
db39fcf1
PB		 188 return chr;
189}
190
a425d23f 191void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 192{
73cdf3f2
AG		 193 /* Keep track if the char device is open */
194 switch (event) {
195 case CHR_EVENT_OPENED:
16665b94 196 s->be_open = 1;
73cdf3f2
AG		 197 break;
198 case CHR_EVENT_CLOSED:
16665b94 199 s->be_open = 0;
73cdf3f2
AG		 200 break;
201 }
202
6f97dba0
AL		 203 if (!s->chr_event)
204 return;
205 s->chr_event(s->handler_opaque, event);
206}
207
fee204fd 208void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 209{
bd5c51ee 210 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 211}
212
d0d7708b
DB		 213
214/* Not reporting errors from writing to logfile, as logs are
215 * defined to be "best effort" only */
216static void qemu_chr_fe_write_log(CharDriverState *s,
217 const uint8_t *buf, size_t len)
218{
219 size_t done = 0;
220 ssize_t ret;
221
222 if (s->logfd < 0) {
223 return;
224 }
225
226 while (done < len) {
53628efb
DB		 227 retry:
228 ret = write(s->logfd, buf + done, len - done);
229 if (ret == -1 && errno == EAGAIN) {
230 g_usleep(100);
231 goto retry;
232 }
d0d7708b
DB		 233
234 if (ret <= 0) {
235 return;
236 }
237 done += ret;
238 }
239}
240
33577b47
PD		 241static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
242{
243 int res = 0;
244 *offset = 0;
245
246 qemu_mutex_lock(&s->chr_write_lock);
247 while (*offset < len) {
53628efb
DB		 248 retry:
249 res = s->chr_write(s, buf + *offset, len - *offset);
250 if (res < 0 && errno == EAGAIN) {
251 g_usleep(100);
252 goto retry;
253 }
33577b47
PD		 254
255 if (res <= 0) {
256 break;
257 }
258
259 *offset += res;
260 }
261 if (*offset > 0) {
262 qemu_chr_fe_write_log(s, buf, *offset);
263 }
264 qemu_mutex_unlock(&s->chr_write_lock);
265
266 return res;
267}
268
2cc6e0a1 269int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 270{
9005b2a7
PB		 271 int ret;
272
33577b47
PD		 273 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
274 int offset;
275 replay_char_write_event_load(&ret, &offset);
276 assert(offset <= len);
277 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
278 return ret;
279 }
280
9005b2a7
PB		 281 qemu_mutex_lock(&s->chr_write_lock);
282 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 283
284 if (ret > 0) {
285 qemu_chr_fe_write_log(s, buf, ret);
286 }
287
9005b2a7 288 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 289
290 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
291 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
292 }
293
9005b2a7 294 return ret;
6f97dba0
AL		 295}
296
cd18720a
AL		 297int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
298{
33577b47
PD		 299 int offset;
300 int res;
cd18720a 301
33577b47
PD		 302 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
303 replay_char_write_event_load(&res, &offset);
304 assert(offset <= len);
305 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
306 return res;
307 }
cd18720a 308
33577b47 309 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 310
33577b47
PD		 311 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
312 replay_char_write_event_save(res, offset);
cd18720a
AL		 313 }
314
9005b2a7
PB		 315 if (res < 0) {
316 return res;
317 }
cd18720a
AL		 318 return offset;
319}
320
7b0bfdf5
NN		 321int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
322{
323 int offset = 0, counter = 10;
324 int res;
325
326 if (!s->chr_sync_read) {
327 return 0;
328 }
33577b47
PD		 329
330 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
331 return replay_char_read_all_load(buf);
332 }
7b0bfdf5
NN		 333
334 while (offset < len) {
53628efb
DB		 335 retry:
336 res = s->chr_sync_read(s, buf + offset, len - offset);
337 if (res == -1 && errno == EAGAIN) {
338 g_usleep(100);
339 goto retry;
340 }
7b0bfdf5
NN		 341
342 if (res == 0) {
343 break;
344 }
345
346 if (res < 0) {
33577b47
PD		 347 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
348 replay_char_read_all_save_error(res);
349 }
7b0bfdf5
NN		 350 return res;
351 }
352
353 offset += res;
354
355 if (!counter--) {
356 break;
357 }
358 }
359
33577b47
PD		 360 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
361 replay_char_read_all_save_buf(buf, offset);
362 }
7b0bfdf5
NN		 363 return offset;
364}
365
41084f1b 366int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0 367{
33577b47
PD		 368 int res;
369 if (!s->chr_ioctl || s->replay) {
370 res = -ENOTSUP;
371 } else {
372 res = s->chr_ioctl(s, cmd, arg);
373 }
374
375 return res;
6f97dba0
AL		 376}
377
909cda12 378int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 379{
380 if (!s->chr_can_read)
381 return 0;
382 return s->chr_can_read(s->handler_opaque);
383}
384
33577b47 385void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 386{
ac310734
SW		 387 if (s->chr_read) {
388 s->chr_read(s->handler_opaque, buf, len);
389 }
6f97dba0
AL		 390}
391
33577b47
PD		 392void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
393{
394 if (s->replay) {
395 if (replay_mode == REPLAY_MODE_PLAY) {
396 return;
397 }
398 replay_chr_be_write(s, buf, len);
399 } else {
400 qemu_chr_be_write_impl(s, buf, len);
401 }
402}
403
74c0d6f0 404int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 405{
c76bf6bb 406 int fd;
33577b47
PD		 407 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
408 if (s->replay) {
409 fprintf(stderr,
410 "Replay: get msgfd is not supported for serial devices yet\n");
411 exit(1);
412 }
413 return res;
c76bf6bb
NN		 414}
415
416int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
417{
418 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 419}
420
d39aac7a
NN		 421int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
422{
423 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
424}
425
13661089
DB		 426int qemu_chr_add_client(CharDriverState *s, int fd)
427{
428 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
429}
430
6f97dba0
AL		 431void qemu_chr_accept_input(CharDriverState *s)
432{
433 if (s->chr_accept_input)
434 s->chr_accept_input(s);
98c8ee1d 435 qemu_notify_event();
6f97dba0
AL		 436}
437
e7e71b0e 438void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 439{
9bd7854e 440 char buf[READ_BUF_LEN];
6f97dba0
AL		 441 va_list ap;
442 va_start(ap, fmt);
443 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 444 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 445 va_end(ap);
446}
447
386a5a1e
AS		 448static void remove_fd_in_watch(CharDriverState *chr);
449
6f97dba0 450void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 451 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 452 IOReadHandler *fd_read,
453 IOEventHandler *fd_event,
454 void *opaque)
455{
19083228
HG		 456 int fe_open;
457
da7d998b 458 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 459 fe_open = 0;
386a5a1e 460 remove_fd_in_watch(s);
19083228
HG		 461 } else {
462 fe_open = 1;
2d6c1ef4 463 }
6f97dba0
AL		 464 s->chr_can_read = fd_can_read;
465 s->chr_read = fd_read;
466 s->chr_event = fd_event;
467 s->handler_opaque = opaque;
ac1b84dd 468 if (fe_open && s->chr_update_read_handler)
6f97dba0 469 s->chr_update_read_handler(s);
73cdf3f2 470
19083228 471 if (!s->explicit_fe_open) {
8e25daa8 472 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 473 }
474
73cdf3f2
AG		 475 /* We're connecting to an already opened device, so let's make sure we
476 also get the open event */
a59bcd31 477 if (fe_open && s->be_open) {
fee204fd 478 qemu_chr_be_generic_open(s);
73cdf3f2 479 }
6f97dba0
AL		 480}
481
482static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
483{
484 return len;
485}
486
0d64992b
PB		 487static CharDriverState *qemu_chr_open_null(const char *id,
488 ChardevBackend *backend,
489 ChardevReturn *ret,
490 Error **errp)
6f97dba0
AL		 491{
492 CharDriverState *chr;
32bafa8f 493 ChardevCommon *common = backend->u.null.data;
6f97dba0 494
d0d7708b
DB		 495 chr = qemu_chr_alloc(common, errp);
496 if (!chr) {
497 return NULL;
498 }
6f97dba0 499 chr->chr_write = null_chr_write;
bd5c51ee 500 chr->explicit_be_open = true;
1f51470d 501 return chr;
6f97dba0
AL		 502}
503
504/* MUX driver for serial I/O splitting */
6f97dba0
AL		 505#define MAX_MUX 4
506#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
507#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
508typedef struct {
7b27a769 509 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 510 IOReadHandler *chr_read[MAX_MUX];
511 IOEventHandler *chr_event[MAX_MUX];
512 void *ext_opaque[MAX_MUX];
513 CharDriverState *drv;
799f1f23 514 int focus;
6f97dba0
AL		 515 int mux_cnt;
516 int term_got_escape;
517 int max_size;
a80bf99f
AL		 518 /* Intermediate input buffer allows to catch escape sequences even if the
519 currently active device is not accepting any input - but only until it
520 is full as well. */
521 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
522 int prod[MAX_MUX];
523 int cons[MAX_MUX];
2d22959d 524 int timestamps;
9005b2a7
PB		 525
526 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 527 int linestart;
2d22959d 528 int64_t timestamps_start;
6f97dba0
AL		 529} MuxDriver;
530
531
9005b2a7 532/* Called with chr_write_lock held. */
6f97dba0
AL		 533static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
534{
535 MuxDriver *d = chr->opaque;
536 int ret;
2d22959d 537 if (!d->timestamps) {
6975b713 538 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 539 } else {
540 int i;
541
542 ret = 0;
4ab312f7
JK		 543 for (i = 0; i < len; i++) {
544 if (d->linestart) {
6f97dba0
AL		 545 char buf1[64];
546 int64_t ti;
547 int secs;
548
bc72ad67 549 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 550 if (d->timestamps_start == -1)
551 d->timestamps_start = ti;
552 ti -= d->timestamps_start;
a4bb1db8 553 secs = ti / 1000;
6f97dba0
AL		 554 snprintf(buf1, sizeof(buf1),
555 "[%02d:%02d:%02d.%03d] ",
556 secs / 3600,
557 (secs / 60) % 60,
558 secs % 60,
a4bb1db8 559 (int)(ti % 1000));
6975b713 560 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 561 d->linestart = 0;
562 }
6975b713 563 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 564 if (buf[i] == '\n') {
565 d->linestart = 1;
6f97dba0
AL		 566 }
567 }
568 }
569 return ret;
570}
571
572static const char * const mux_help[] = {
573 "% h print this help\n\r",
574 "% x exit emulator\n\r",
575 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 576 "% t toggle console timestamps\n\r",
6f97dba0
AL		 577 "% b send break (magic sysrq)\n\r",
578 "% c switch between console and monitor\n\r",
579 "% % sends %\n\r",
580 NULL
581};
582
583int term_escape_char = 0x01; /* ctrl-a is used for escape */
584static void mux_print_help(CharDriverState *chr)
585{
586 int i, j;
587 char ebuf[15] = "Escape-Char";
588 char cbuf[50] = "\n\r";
589
590 if (term_escape_char > 0 && term_escape_char < 26) {
591 snprintf(cbuf, sizeof(cbuf), "\n\r");
592 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
593 } else {
594 snprintf(cbuf, sizeof(cbuf),
595 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
596 term_escape_char);
597 }
6975b713 598 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 599 for (i = 0; mux_help[i] != NULL; i++) {
600 for (j=0; mux_help[i][j] != '\0'; j++) {
601 if (mux_help[i][j] == '%')
6975b713 602 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 603 else
6975b713 604 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 605 }
606 }
607}
608
2724b180
AL		 609static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
610{
611 if (d->chr_event[mux_nr])
612 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
613}
614
6f97dba0
AL		 615static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
616{
617 if (d->term_got_escape) {
618 d->term_got_escape = 0;
619 if (ch == term_escape_char)
620 goto send_char;
621 switch(ch) {
622 case '?':
623 case 'h':
624 mux_print_help(chr);
625 break;
626 case 'x':
627 {
628 const char *term = "QEMU: Terminated\n\r";
6975b713 629 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 630 exit(0);
631 break;
632 }
633 case 's':
da31d594 634 blk_commit_all();
6f97dba0
AL		 635 break;
636 case 'b':
a425d23f 637 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 638 break;
639 case 'c':
640 /* Switch to the next registered device */
799f1f23
GH		 641 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
642 d->focus++;
643 if (d->focus >= d->mux_cnt)
644 d->focus = 0;
645 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 646 break;
2d22959d
JK		 647 case 't':
648 d->timestamps = !d->timestamps;
649 d->timestamps_start = -1;
4ab312f7 650 d->linestart = 0;
2d22959d 651 break;
6f97dba0
AL		 652 }
653 } else if (ch == term_escape_char) {
654 d->term_got_escape = 1;
655 } else {
656 send_char:
657 return 1;
658 }
659 return 0;
660}
661
662static void mux_chr_accept_input(CharDriverState *chr)
663{
6f97dba0 664 MuxDriver *d = chr->opaque;
799f1f23 665 int m = d->focus;
6f97dba0 666
a80bf99f 667 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 668 d->chr_can_read[m] &&
669 d->chr_can_read[m](d->ext_opaque[m])) {
670 d->chr_read[m](d->ext_opaque[m],
a80bf99f 671 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 672 }
673}
674
675static int mux_chr_can_read(void *opaque)
676{
677 CharDriverState *chr = opaque;
678 MuxDriver *d = chr->opaque;
799f1f23 679 int m = d->focus;
6f97dba0 680
a80bf99f 681 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 682 return 1;
a80bf99f
AL		 683 if (d->chr_can_read[m])
684 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 685 return 0;
686}
687
688static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
689{
690 CharDriverState *chr = opaque;
691 MuxDriver *d = chr->opaque;
799f1f23 692 int m = d->focus;
6f97dba0
AL		 693 int i;
694
695 mux_chr_accept_input (opaque);
696
697 for(i = 0; i < size; i++)
698 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 699 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 700 d->chr_can_read[m] &&
701 d->chr_can_read[m](d->ext_opaque[m]))
702 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
703 else
a80bf99f 704 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 705 }
706}
707
708static void mux_chr_event(void *opaque, int event)
709{
710 CharDriverState *chr = opaque;
711 MuxDriver *d = chr->opaque;
712 int i;
713
714 /* Send the event to all registered listeners */
715 for (i = 0; i < d->mux_cnt; i++)
2724b180 716 mux_chr_send_event(d, i, event);
6f97dba0
AL		 717}
718
719static void mux_chr_update_read_handler(CharDriverState *chr)
720{
721 MuxDriver *d = chr->opaque;
722
723 if (d->mux_cnt >= MAX_MUX) {
724 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
725 return;
726 }
727 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
728 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
729 d->chr_read[d->mux_cnt] = chr->chr_read;
730 d->chr_event[d->mux_cnt] = chr->chr_event;
731 /* Fix up the real driver with mux routines */
732 if (d->mux_cnt == 0) {
733 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
734 mux_chr_event, chr);
735 }
799f1f23
GH		 736 if (d->focus != -1) {
737 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 738 }
799f1f23 739 d->focus = d->mux_cnt;
6f97dba0 740 d->mux_cnt++;
799f1f23 741 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 742}
743
7b7ab18d
MR		 744static bool muxes_realized;
745
746/**
747 * Called after processing of default and command-line-specified
748 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
749 * to a mux chardev. This is done here to ensure that
750 * output/prompts/banners are only displayed for the FE that has
751 * focus when initial command-line processing/machine init is
752 * completed.
753 *
754 * After this point, any new FE attached to any new or existing
755 * mux will receive CHR_EVENT_OPENED notifications for the BE
756 * immediately.
757 */
758static void muxes_realize_done(Notifier *notifier, void *unused)
759{
760 CharDriverState *chr;
761
762 QTAILQ_FOREACH(chr, &chardevs, next) {
763 if (chr->is_mux) {
764 MuxDriver *d = chr->opaque;
765 int i;
766
767 /* send OPENED to all already-attached FEs */
768 for (i = 0; i < d->mux_cnt; i++) {
769 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
770 }
771 /* mark mux as OPENED so any new FEs will immediately receive
772 * OPENED event
773 */
774 qemu_chr_be_generic_open(chr);
775 }
776 }
777 muxes_realized = true;
778}
779
780static Notifier muxes_realize_notify = {
781 .notify = muxes_realize_done,
782};
783
3f0838ab
KB		 784static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
785{
786 MuxDriver *d = s->opaque;
787 return d->drv->chr_add_watch(d->drv, cond);
788}
789
1371a369
MAL		 790static void mux_chr_close(struct CharDriverState *chr)
791{
792 MuxDriver *d = chr->opaque;
793
794 g_free(d);
795}
796
3c0e5a4a
PB		 797static CharDriverState *qemu_chr_open_mux(const char *id,
798 ChardevBackend *backend,
799 ChardevReturn *ret, Error **errp)
6f97dba0 800{
32bafa8f 801 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 802 CharDriverState *chr, *drv;
6f97dba0 803 MuxDriver *d;
f194a1ae 804 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 805
3c0e5a4a
PB		 806 drv = qemu_chr_find(mux->chardev);
807 if (drv == NULL) {
808 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
809 return NULL;
810 }
811
d0d7708b
DB		 812 chr = qemu_chr_alloc(common, errp);
813 if (!chr) {
814 return NULL;
815 }
2d528d45 816 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 817
818 chr->opaque = d;
819 d->drv = drv;
799f1f23 820 d->focus = -1;
1371a369 821 chr->chr_close = mux_chr_close;
6f97dba0
AL		 822 chr->chr_write = mux_chr_write;
823 chr->chr_update_read_handler = mux_chr_update_read_handler;
824 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 825 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 826 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 827 if (drv->chr_add_watch) {
828 chr->chr_add_watch = mux_chr_add_watch;
829 }
7b7ab18d
MR		 830 /* only default to opened state if we've realized the initial
831 * set of muxes
832 */
833 chr->explicit_be_open = muxes_realized ? 0 : 1;
834 chr->is_mux = 1;
73cdf3f2 835
6f97dba0
AL		 836 return chr;
837}
838
839
96c63847
AL		 840typedef struct IOWatchPoll
841{
d185c094
PB		 842 GSource parent;
843
9894dc0c 844 QIOChannel *ioc;
96c63847 845 GSource *src;
96c63847
AL		 846
847 IOCanReadHandler *fd_can_read;
1e885b25 848 GSourceFunc fd_read;
96c63847 849 void *opaque;
96c63847
AL		 850} IOWatchPoll;
851
96c63847
AL		 852static IOWatchPoll *io_watch_poll_from_source(GSource *source)
853{
d185c094 854 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 855}
856
857static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
858{
859 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 860 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 861 bool was_active = iwp->src != NULL;
d185c094 862 if (was_active == now_active) {
96c63847
AL		 863 return FALSE;
864 }
865
d185c094 866 if (now_active) {
9894dc0c
DB		 867 iwp->src = qio_channel_create_watch(
868 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 869 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 870 g_source_attach(iwp->src, NULL);
871 } else {
1e885b25
PB		 872 g_source_destroy(iwp->src);
873 g_source_unref(iwp->src);
874 iwp->src = NULL;
d185c094
PB		 875 }
876 return FALSE;
96c63847
AL		 877}
878
879static gboolean io_watch_poll_check(GSource *source)
880{
d185c094 881 return FALSE;
96c63847
AL		 882}
883
884static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
885 gpointer user_data)
886{
d185c094 887 abort();
96c63847
AL		 888}
889
890static void io_watch_poll_finalize(GSource *source)
891{
2b316774
PB		 892 /* Due to a glib bug, removing the last reference to a source
893 * inside a finalize callback causes recursive locking (and a
894 * deadlock). This is not a problem inside other callbacks,
895 * including dispatch callbacks, so we call io_remove_watch_poll
896 * to remove this source. At this point, iwp->src must
897 * be NULL, or we would leak it.
898 *
899 * This would be solved much more elegantly by child sources,
900 * but we support older glib versions that do not have them.
901 */
96c63847 902 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 903 assert(iwp->src == NULL);
96c63847
AL		 904}
905
906static GSourceFuncs io_watch_poll_funcs = {
907 .prepare = io_watch_poll_prepare,
908 .check = io_watch_poll_check,
909 .dispatch = io_watch_poll_dispatch,
910 .finalize = io_watch_poll_finalize,
911};
912
913/* Can only be used for read */
9894dc0c 914static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 915 IOCanReadHandler *fd_can_read,
9894dc0c 916 QIOChannelFunc fd_read,
96c63847
AL		 917 gpointer user_data)
918{
919 IOWatchPoll *iwp;
0ca5aa4f 920 int tag;
96c63847 921
d185c094 922 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 923 iwp->fd_can_read = fd_can_read;
924 iwp->opaque = user_data;
9894dc0c 925 iwp->ioc = ioc;
1e885b25
PB		 926 iwp->fd_read = (GSourceFunc) fd_read;
927 iwp->src = NULL;
96c63847 928
0ca5aa4f
PB		 929 tag = g_source_attach(&iwp->parent, NULL);
930 g_source_unref(&iwp->parent);
931 return tag;
96c63847
AL		 932}
933
2b316774
PB		 934static void io_remove_watch_poll(guint tag)
935{
936 GSource *source;
937 IOWatchPoll *iwp;
938
939 g_return_if_fail (tag > 0);
940
941 source = g_main_context_find_source_by_id(NULL, tag);
942 g_return_if_fail (source != NULL);
943
944 iwp = io_watch_poll_from_source(source);
945 if (iwp->src) {
946 g_source_destroy(iwp->src);
947 g_source_unref(iwp->src);
948 iwp->src = NULL;
949 }
950 g_source_destroy(&iwp->parent);
951}
952
26da70c7
AS		 953static void remove_fd_in_watch(CharDriverState *chr)
954{
955 if (chr->fd_in_tag) {
956 io_remove_watch_poll(chr->fd_in_tag);
957 chr->fd_in_tag = 0;
958 }
959}
960
96c63847 961
9894dc0c
DB		 962static int io_channel_send_full(QIOChannel *ioc,
963 const void *buf, size_t len,
964 int *fds, size_t nfds)
76a9644b 965{
9894dc0c 966 size_t offset = 0;
76a9644b 967
9894dc0c
DB		 968 while (offset < len) {
969 ssize_t ret = 0;
970 struct iovec iov = { .iov_base = (char *)buf + offset,
971 .iov_len = len - offset };
972
973 ret = qio_channel_writev_full(
974 ioc, &iov, 1,
975 fds, nfds, NULL);
976 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 977 if (offset) {
978 return offset;
979 }
76a9644b 980
e046fb44
DB		 981 errno = EAGAIN;
982 return -1;
983 } else if (ret < 0) {
9894dc0c
DB		 984 errno = EINVAL;
985 return -1;
986 }
76a9644b 987
9894dc0c
DB		 988 offset += ret;
989 }
76a9644b 990
9894dc0c 991 return offset;
76a9644b
AL		 992}
993
9894dc0c 994
0ff0fad2 995#ifndef _WIN32
9894dc0c 996static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 997{
9894dc0c 998 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 999}
96c63847 1000
44ab9ed4 1001
a29753f8
AL		 1002typedef struct FDCharDriver {
1003 CharDriverState *chr;
9894dc0c 1004 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 1005 int max_size;
1006} FDCharDriver;
1007
9005b2a7 1008/* Called with chr_write_lock held. */
6f97dba0
AL		 1009static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1010{
1011 FDCharDriver *s = chr->opaque;
a29753f8 1012
9894dc0c 1013 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1014}
1015
9894dc0c 1016static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1017{
1018 CharDriverState *chr = opaque;
1019 FDCharDriver *s = chr->opaque;
a29753f8 1020 int len;
9bd7854e 1021 uint8_t buf[READ_BUF_LEN];
9894dc0c 1022 ssize_t ret;
6f97dba0
AL		 1023
1024 len = sizeof(buf);
a29753f8 1025 if (len > s->max_size) {
6f97dba0 1026 len = s->max_size;
a29753f8
AL		 1027 }
1028 if (len == 0) {
cdbf6e16 1029 return TRUE;
a29753f8
AL		 1030 }
1031
9894dc0c
DB		 1032 ret = qio_channel_read(
1033 chan, (gchar *)buf, len, NULL);
1034 if (ret == 0) {
26da70c7 1035 remove_fd_in_watch(chr);
a425d23f 1036 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1037 return FALSE;
6f97dba0 1038 }
9894dc0c
DB		 1039 if (ret > 0) {
1040 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1041 }
a29753f8
AL		 1042
1043 return TRUE;
1044}
1045
1046static int fd_chr_read_poll(void *opaque)
1047{
1048 CharDriverState *chr = opaque;
1049 FDCharDriver *s = chr->opaque;
1050
1051 s->max_size = qemu_chr_be_can_write(chr);
1052 return s->max_size;
6f97dba0
AL		 1053}
1054
23673ca7
AL		 1055static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1056{
1057 FDCharDriver *s = chr->opaque;
9894dc0c 1058 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1059}
1060
6f97dba0
AL		 1061static void fd_chr_update_read_handler(CharDriverState *chr)
1062{
1063 FDCharDriver *s = chr->opaque;
1064
26da70c7 1065 remove_fd_in_watch(chr);
9894dc0c
DB		 1066 if (s->ioc_in) {
1067 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1068 fd_chr_read_poll,
7ba9addc 1069 fd_chr_read, chr);
6f97dba0
AL		 1070 }
1071}
1072
1073static void fd_chr_close(struct CharDriverState *chr)
1074{
1075 FDCharDriver *s = chr->opaque;
1076
26da70c7 1077 remove_fd_in_watch(chr);
9894dc0c
DB		 1078 if (s->ioc_in) {
1079 object_unref(OBJECT(s->ioc_in));
a29753f8 1080 }
9894dc0c
DB		 1081 if (s->ioc_out) {
1082 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1083 }
1084
7267c094 1085 g_free(s);
a425d23f 1086 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1087}
1088
1089/* open a character device to a unix fd */
d0d7708b
DB		 1090static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1091 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1092{
1093 CharDriverState *chr;
1094 FDCharDriver *s;
1095
d0d7708b
DB		 1096 chr = qemu_chr_alloc(backend, errp);
1097 if (!chr) {
1098 return NULL;
1099 }
2d528d45 1100 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1101 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1102 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1103 qemu_set_nonblock(fd_out);
a29753f8 1104 s->chr = chr;
6f97dba0 1105 chr->opaque = s;
23673ca7 1106 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1107 chr->chr_write = fd_chr_write;
1108 chr->chr_update_read_handler = fd_chr_update_read_handler;
1109 chr->chr_close = fd_chr_close;
1110
6f97dba0
AL		 1111 return chr;
1112}
1113
20cbe7a2
PB		 1114static CharDriverState *qemu_chr_open_pipe(const char *id,
1115 ChardevBackend *backend,
1116 ChardevReturn *ret,
1117 Error **errp)
6f97dba0 1118{
32bafa8f 1119 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1120 int fd_in, fd_out;
0ff0fad2
DB		 1121 char *filename_in;
1122 char *filename_out;
548cbb36 1123 const char *filename = opts->device;
f194a1ae 1124 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1125
0ff0fad2
DB		 1126
1127 filename_in = g_strdup_printf("%s.in", filename);
1128 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1129 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1130 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1131 g_free(filename_in);
1132 g_free(filename_out);
6f97dba0
AL		 1133 if (fd_in < 0 || fd_out < 0) {
1134 if (fd_in >= 0)
1135 close(fd_in);
1136 if (fd_out >= 0)
1137 close(fd_out);
b181e047 1138 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1139 if (fd_in < 0) {
20cbe7a2 1140 error_setg_file_open(errp, errno, filename);
1f51470d 1141 return NULL;
a89dd6c3 1142 }
6f97dba0 1143 }
d0d7708b 1144 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1145}
1146
6f97dba0
AL		 1147/* init terminal so that we can grab keys */
1148static struct termios oldtty;
1149static int old_fd0_flags;
c88930a6 1150static bool stdio_in_use;
bb002513 1151static bool stdio_allow_signal;
e76d4420
GH		 1152static bool stdio_echo_state;
1153
1154static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1155
1156static void term_exit(void)
1157{
1158 tcsetattr (0, TCSANOW, &oldtty);
1159 fcntl(0, F_SETFL, old_fd0_flags);
1160}
1161
e76d4420
GH		 1162static void term_stdio_handler(int sig)
1163{
1164 /* restore echo after resume from suspend. */
1165 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1166}
1167
bb002513 1168static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1169{
1170 struct termios tty;
1171
e76d4420 1172 stdio_echo_state = echo;
0369364b 1173 tty = oldtty;
bb002513
PB		 1174 if (!echo) {
1175 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1176 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1177 tty.c_oflag |= OPOST;
1178 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1179 tty.c_cflag &= ~(CSIZE|PARENB);
1180 tty.c_cflag |= CS8;
1181 tty.c_cc[VMIN] = 1;
1182 tty.c_cc[VTIME] = 0;
1183 }
bb002513 1184 if (!stdio_allow_signal)
6f97dba0 1185 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1186
1187 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1188}
1189
1190static void qemu_chr_close_stdio(struct CharDriverState *chr)
1191{
1192 term_exit();
6f97dba0
AL		 1193 fd_chr_close(chr);
1194}
1195
8c84b25d
PB		 1196static CharDriverState *qemu_chr_open_stdio(const char *id,
1197 ChardevBackend *backend,
1198 ChardevReturn *ret,
1199 Error **errp)
6f97dba0 1200{
32bafa8f 1201 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1202 CharDriverState *chr;
e76d4420 1203 struct sigaction act;
f194a1ae 1204 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1205
ab51b1d5 1206 if (is_daemonized()) {
8c84b25d 1207 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1208 return NULL;
1209 }
c88930a6
LL		 1210
1211 if (stdio_in_use) {
8c84b25d
PB		 1212 error_setg(errp, "cannot use stdio by multiple character devices");
1213 return NULL;
c88930a6
LL		 1214 }
1215
1216 stdio_in_use = true;
ed7a1540 1217 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1218 tcgetattr(0, &oldtty);
4ff12bdb 1219 qemu_set_nonblock(0);
ed7a1540 1220 atexit(term_exit);
0369364b 1221
e76d4420
GH		 1222 memset(&act, 0, sizeof(act));
1223 act.sa_handler = term_stdio_handler;
1224 sigaction(SIGCONT, &act, NULL);
1225
d0d7708b 1226 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1227 chr->chr_close = qemu_chr_close_stdio;
bb002513 1228 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1229 if (opts->has_signal) {
1230 stdio_allow_signal = opts->signal;
1231 }
15f31519 1232 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1233
1f51470d 1234 return chr;
6f97dba0
AL		 1235}
1236
6f97dba0 1237#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1238 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1239 || defined(__GLIBC__)
6f97dba0 1240
d809ab95
PB		 1241#define HAVE_CHARDEV_SERIAL 1
1242#define HAVE_CHARDEV_PTY 1
e551498e 1243
6f97dba0 1244typedef struct {
9894dc0c 1245 QIOChannel *ioc;
6f97dba0 1246 int read_bytes;
9005b2a7
PB		 1247
1248 /* Protected by the CharDriverState chr_write_lock. */
1249 int connected;
8aa33caf 1250 guint timer_tag;
7b3621f4 1251 guint open_tag;
6f97dba0
AL		 1252} PtyCharDriver;
1253
9005b2a7 1254static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1255static void pty_chr_state(CharDriverState *chr, int connected);
1256
8aa33caf
AL		 1257static gboolean pty_chr_timer(gpointer opaque)
1258{
1259 struct CharDriverState *chr = opaque;
1260 PtyCharDriver *s = chr->opaque;
1261
9005b2a7 1262 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1263 s->timer_tag = 0;
7b3621f4 1264 s->open_tag = 0;
b0d768c3
GH		 1265 if (!s->connected) {
1266 /* Next poll ... */
9005b2a7 1267 pty_chr_update_read_handler_locked(chr);
b0d768c3 1268 }
9005b2a7 1269 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1270 return FALSE;
1271}
1272
9005b2a7 1273/* Called with chr_write_lock held. */
8aa33caf
AL		 1274static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1275{
1276 PtyCharDriver *s = chr->opaque;
1277
1278 if (s->timer_tag) {
1279 g_source_remove(s->timer_tag);
1280 s->timer_tag = 0;
1281 }
1282
1283 if (ms == 1000) {
1284 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1285 } else {
1286 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1287 }
1288}
1289
9005b2a7
PB		 1290/* Called with chr_write_lock held. */
1291static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1292{
1293 PtyCharDriver *s = chr->opaque;
1294 GPollFD pfd;
c1f24489 1295 int rc;
9894dc0c 1296 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1297
9894dc0c 1298 pfd.fd = fioc->fd;
1bb7fe72
PB		 1299 pfd.events = G_IO_OUT;
1300 pfd.revents = 0;
c1f24489
PB		 1301 do {
1302 rc = g_poll(&pfd, 1, 0);
1303 } while (rc == -1 && errno == EINTR);
1304 assert(rc >= 0);
1305
1bb7fe72
PB		 1306 if (pfd.revents & G_IO_HUP) {
1307 pty_chr_state(chr, 0);
1308 } else {
1309 pty_chr_state(chr, 1);
1310 }
1311}
1312
9005b2a7
PB		 1313static void pty_chr_update_read_handler(CharDriverState *chr)
1314{
1315 qemu_mutex_lock(&chr->chr_write_lock);
1316 pty_chr_update_read_handler_locked(chr);
1317 qemu_mutex_unlock(&chr->chr_write_lock);
1318}
1319
1320/* Called with chr_write_lock held. */
6f97dba0
AL		 1321static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1322{
1323 PtyCharDriver *s = chr->opaque;
1324
1325 if (!s->connected) {
1326 /* guest sends data, check for (re-)connect */
9005b2a7 1327 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1328 if (!s->connected) {
1329 return 0;
1330 }
6f97dba0 1331 }
9894dc0c 1332 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1333}
1334
e6a87ed8
AL		 1335static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1336{
1337 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1338 if (!s->connected) {
1339 return NULL;
1340 }
9894dc0c 1341 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1342}
1343
6f97dba0
AL		 1344static int pty_chr_read_poll(void *opaque)
1345{
1346 CharDriverState *chr = opaque;
1347 PtyCharDriver *s = chr->opaque;
1348
909cda12 1349 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1350 return s->read_bytes;
1351}
1352
9894dc0c 1353static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1354{
1355 CharDriverState *chr = opaque;
1356 PtyCharDriver *s = chr->opaque;
9894dc0c 1357 gsize len;
9bd7854e 1358 uint8_t buf[READ_BUF_LEN];
9894dc0c 1359 ssize_t ret;
6f97dba0
AL		 1360
1361 len = sizeof(buf);
1362 if (len > s->read_bytes)
1363 len = s->read_bytes;
cdbf6e16
PB		 1364 if (len == 0) {
1365 return TRUE;
1366 }
9894dc0c
DB		 1367 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1368 if (ret <= 0) {
6f97dba0 1369 pty_chr_state(chr, 0);
093d3a20
AL		 1370 return FALSE;
1371 } else {
6f97dba0 1372 pty_chr_state(chr, 1);
9894dc0c 1373 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1374 }
093d3a20 1375 return TRUE;
6f97dba0
AL		 1376}
1377
7b3621f4
PB		 1378static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1379{
1380 CharDriverState *chr = opaque;
1381 PtyCharDriver *s = chr->opaque;
1382
1383 s->open_tag = 0;
1384 qemu_chr_be_generic_open(chr);
1385 return FALSE;
1386}
1387
9005b2a7 1388/* Called with chr_write_lock held. */
6f97dba0
AL		 1389static void pty_chr_state(CharDriverState *chr, int connected)
1390{
1391 PtyCharDriver *s = chr->opaque;
1392
1393 if (!connected) {
7b3621f4
PB		 1394 if (s->open_tag) {
1395 g_source_remove(s->open_tag);
1396 s->open_tag = 0;
1397 }
26da70c7 1398 remove_fd_in_watch(chr);
6f97dba0 1399 s->connected = 0;
6f97dba0
AL		 1400 /* (re-)connect poll interval for idle guests: once per second.
1401 * We check more frequently in case the guests sends data to
1402 * the virtual device linked to our pty. */
8aa33caf 1403 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1404 } else {
85a67692
PB		 1405 if (s->timer_tag) {
1406 g_source_remove(s->timer_tag);
1407 s->timer_tag = 0;
1408 }
1409 if (!s->connected) {
7b3621f4 1410 g_assert(s->open_tag == 0);
85a67692 1411 s->connected = 1;
7b3621f4 1412 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1413 }
1414 if (!chr->fd_in_tag) {
9894dc0c
DB		 1415 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1416 pty_chr_read_poll,
7ba9addc 1417 pty_chr_read, chr);
85a67692 1418 }
6f97dba0
AL		 1419 }
1420}
1421
6f97dba0
AL		 1422static void pty_chr_close(struct CharDriverState *chr)
1423{
1424 PtyCharDriver *s = chr->opaque;
1425
7b3621f4
PB		 1426 qemu_mutex_lock(&chr->chr_write_lock);
1427 pty_chr_state(chr, 0);
9894dc0c 1428 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1429 if (s->timer_tag) {
1430 g_source_remove(s->timer_tag);
910b6368 1431 s->timer_tag = 0;
8aa33caf 1432 }
7b3621f4 1433 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1434 g_free(s);
a425d23f 1435 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1436}
1437
e68c5958 1438static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1439 ChardevBackend *backend,
1440 ChardevReturn *ret,
1441 Error **errp)
6f97dba0
AL		 1442{
1443 CharDriverState *chr;
1444 PtyCharDriver *s;
e68c5958 1445 int master_fd, slave_fd;
6f97dba0 1446 char pty_name[PATH_MAX];
32bafa8f 1447 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1448
4efeabbb
MT		 1449 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1450 if (master_fd < 0) {
c2e75a43 1451 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1452 return NULL;
6f97dba0
AL		 1453 }
1454
837a183f 1455 close(slave_fd);
fac6688a 1456 qemu_set_nonblock(master_fd);
6f97dba0 1457
d0d7708b
DB		 1458 chr = qemu_chr_alloc(common, errp);
1459 if (!chr) {
1460 close(master_fd);
1461 return NULL;
1462 }
a4e26048 1463
4efeabbb
MT		 1464 chr->filename = g_strdup_printf("pty:%s", pty_name);
1465 ret->pty = g_strdup(pty_name);
e68c5958 1466 ret->has_pty = true;
58650218 1467
e68c5958 1468 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1469 pty_name, id);
6f97dba0 1470
2d528d45 1471 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1472 chr->opaque = s;
1473 chr->chr_write = pty_chr_write;
1474 chr->chr_update_read_handler = pty_chr_update_read_handler;
1475 chr->chr_close = pty_chr_close;
e6a87ed8 1476 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1477 chr->explicit_be_open = true;
6f97dba0 1478
9894dc0c 1479 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1480 s->timer_tag = 0;
6f97dba0 1481
1f51470d 1482 return chr;
6f97dba0
AL		 1483}
1484
1485static void tty_serial_init(int fd, int speed,
1486 int parity, int data_bits, int stop_bits)
1487{
1488 struct termios tty;
1489 speed_t spd;
1490
1491#if 0
1492 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1493 speed, parity, data_bits, stop_bits);
1494#endif
1495 tcgetattr (fd, &tty);
1496
45eea13b
SW		 1497#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1498 speed = speed * 10 / 11;
1499 do {
1500 check_speed(50);
1501 check_speed(75);
1502 check_speed(110);
1503 check_speed(134);
1504 check_speed(150);
1505 check_speed(200);
1506 check_speed(300);
1507 check_speed(600);
1508 check_speed(1200);
1509 check_speed(1800);
1510 check_speed(2400);
1511 check_speed(4800);
1512 check_speed(9600);
1513 check_speed(19200);
1514 check_speed(38400);
1515 /* Non-Posix values follow. They may be unsupported on some systems. */
1516 check_speed(57600);
1517 check_speed(115200);
1518#ifdef B230400
1519 check_speed(230400);
1520#endif
1521#ifdef B460800
1522 check_speed(460800);
1523#endif
1524#ifdef B500000
1525 check_speed(500000);
1526#endif
1527#ifdef B576000
1528 check_speed(576000);
1529#endif
1530#ifdef B921600
1531 check_speed(921600);
1532#endif
1533#ifdef B1000000
1534 check_speed(1000000);
1535#endif
1536#ifdef B1152000
1537 check_speed(1152000);
1538#endif
1539#ifdef B1500000
1540 check_speed(1500000);
1541#endif
1542#ifdef B2000000
1543 check_speed(2000000);
1544#endif
1545#ifdef B2500000
1546 check_speed(2500000);
1547#endif
1548#ifdef B3000000
1549 check_speed(3000000);
1550#endif
1551#ifdef B3500000
1552 check_speed(3500000);
1553#endif
1554#ifdef B4000000
1555 check_speed(4000000);
1556#endif
6f97dba0 1557 spd = B115200;
45eea13b 1558 } while (0);
6f97dba0
AL		 1559
1560 cfsetispeed(&tty, spd);
1561 cfsetospeed(&tty, spd);
1562
1563 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1564 |INLCR|IGNCR|ICRNL|IXON);
1565 tty.c_oflag |= OPOST;
1566 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1567 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1568 switch(data_bits) {
1569 default:
1570 case 8:
1571 tty.c_cflag |= CS8;
1572 break;
1573 case 7:
1574 tty.c_cflag |= CS7;
1575 break;
1576 case 6:
1577 tty.c_cflag |= CS6;
1578 break;
1579 case 5:
1580 tty.c_cflag |= CS5;
1581 break;
1582 }
1583 switch(parity) {
1584 default:
1585 case 'N':
1586 break;
1587 case 'E':
1588 tty.c_cflag |= PARENB;
1589 break;
1590 case 'O':
1591 tty.c_cflag |= PARENB | PARODD;
1592 break;
1593 }
1594 if (stop_bits == 2)
1595 tty.c_cflag |= CSTOPB;
1596
1597 tcsetattr (fd, TCSANOW, &tty);
1598}
1599
1600static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1601{
1602 FDCharDriver *s = chr->opaque;
9894dc0c 1603 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1604
1605 switch(cmd) {
1606 case CHR_IOCTL_SERIAL_SET_PARAMS:
1607 {
1608 QEMUSerialSetParams *ssp = arg;
9894dc0c 1609 tty_serial_init(fioc->fd,
a29753f8 1610 ssp->speed, ssp->parity,
6f97dba0
AL		 1611 ssp->data_bits, ssp->stop_bits);
1612 }
1613 break;
1614 case CHR_IOCTL_SERIAL_SET_BREAK:
1615 {
1616 int enable = *(int *)arg;
a29753f8 1617 if (enable) {
9894dc0c 1618 tcsendbreak(fioc->fd, 1);
a29753f8 1619 }
6f97dba0
AL		 1620 }
1621 break;
1622 case CHR_IOCTL_SERIAL_GET_TIOCM:
1623 {
1624 int sarg = 0;
1625 int *targ = (int *)arg;
9894dc0c 1626 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1627 *targ = 0;
b4abdfa4 1628 if (sarg & TIOCM_CTS)
6f97dba0 1629 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1630 if (sarg & TIOCM_CAR)
6f97dba0 1631 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1632 if (sarg & TIOCM_DSR)
6f97dba0 1633 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1634 if (sarg & TIOCM_RI)
6f97dba0 1635 *targ |= CHR_TIOCM_RI;
b4abdfa4 1636 if (sarg & TIOCM_DTR)
6f97dba0 1637 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1638 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1639 *targ |= CHR_TIOCM_RTS;
1640 }
1641 break;
1642 case CHR_IOCTL_SERIAL_SET_TIOCM:
1643 {
1644 int sarg = *(int *)arg;
1645 int targ = 0;
9894dc0c 1646 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1647 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1648 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1649 if (sarg & CHR_TIOCM_CTS)
1650 targ |= TIOCM_CTS;
1651 if (sarg & CHR_TIOCM_CAR)
1652 targ |= TIOCM_CAR;
1653 if (sarg & CHR_TIOCM_DSR)
1654 targ |= TIOCM_DSR;
1655 if (sarg & CHR_TIOCM_RI)
1656 targ |= TIOCM_RI;
1657 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1658 targ |= TIOCM_DTR;
b4abdfa4 1659 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1660 targ |= TIOCM_RTS;
9894dc0c 1661 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1662 }
1663 break;
1664 default:
1665 return -ENOTSUP;
1666 }
1667 return 0;
1668}
1669
4266a134
DA		 1670static void qemu_chr_close_tty(CharDriverState *chr)
1671{
4266a134 1672 fd_chr_close(chr);
4266a134
DA		 1673}
1674
d0d7708b
DB		 1675static CharDriverState *qemu_chr_open_tty_fd(int fd,
1676 ChardevCommon *backend,
1677 Error **errp)
d59044ef
GH		 1678{
1679 CharDriverState *chr;
1680
1681 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1682 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1683 chr->chr_ioctl = tty_serial_ioctl;
1684 chr->chr_close = qemu_chr_close_tty;
1685 return chr;
1686}
6f97dba0
AL		 1687#endif /* __linux__ || __sun__ */
1688
1689#if defined(__linux__)
e551498e
GH		 1690
1691#define HAVE_CHARDEV_PARPORT 1
1692
6f97dba0
AL		 1693typedef struct {
1694 int fd;
1695 int mode;
1696} ParallelCharDriver;
1697
1698static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1699{
1700 if (s->mode != mode) {
1701 int m = mode;
1702 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1703 return 0;
1704 s->mode = mode;
1705 }
1706 return 1;
1707}
1708
1709static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1710{
1711 ParallelCharDriver *drv = chr->opaque;
1712 int fd = drv->fd;
1713 uint8_t b;
1714
1715 switch(cmd) {
1716 case CHR_IOCTL_PP_READ_DATA:
1717 if (ioctl(fd, PPRDATA, &b) < 0)
1718 return -ENOTSUP;
1719 *(uint8_t *)arg = b;
1720 break;
1721 case CHR_IOCTL_PP_WRITE_DATA:
1722 b = *(uint8_t *)arg;
1723 if (ioctl(fd, PPWDATA, &b) < 0)
1724 return -ENOTSUP;
1725 break;
1726 case CHR_IOCTL_PP_READ_CONTROL:
1727 if (ioctl(fd, PPRCONTROL, &b) < 0)
1728 return -ENOTSUP;
1729 /* Linux gives only the lowest bits, and no way to know data
1730 direction! For better compatibility set the fixed upper
1731 bits. */
1732 *(uint8_t *)arg = b | 0xc0;
1733 break;
1734 case CHR_IOCTL_PP_WRITE_CONTROL:
1735 b = *(uint8_t *)arg;
1736 if (ioctl(fd, PPWCONTROL, &b) < 0)
1737 return -ENOTSUP;
1738 break;
1739 case CHR_IOCTL_PP_READ_STATUS:
1740 if (ioctl(fd, PPRSTATUS, &b) < 0)
1741 return -ENOTSUP;
1742 *(uint8_t *)arg = b;
1743 break;
1744 case CHR_IOCTL_PP_DATA_DIR:
1745 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1746 return -ENOTSUP;
1747 break;
1748 case CHR_IOCTL_PP_EPP_READ_ADDR:
1749 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1750 struct ParallelIOArg *parg = arg;
1751 int n = read(fd, parg->buffer, parg->count);
1752 if (n != parg->count) {
1753 return -EIO;
1754 }
1755 }
1756 break;
1757 case CHR_IOCTL_PP_EPP_READ:
1758 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1759 struct ParallelIOArg *parg = arg;
1760 int n = read(fd, parg->buffer, parg->count);
1761 if (n != parg->count) {
1762 return -EIO;
1763 }
1764 }
1765 break;
1766 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1767 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1768 struct ParallelIOArg *parg = arg;
1769 int n = write(fd, parg->buffer, parg->count);
1770 if (n != parg->count) {
1771 return -EIO;
1772 }
1773 }
1774 break;
1775 case CHR_IOCTL_PP_EPP_WRITE:
1776 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1777 struct ParallelIOArg *parg = arg;
1778 int n = write(fd, parg->buffer, parg->count);
1779 if (n != parg->count) {
1780 return -EIO;
1781 }
1782 }
1783 break;
1784 default:
1785 return -ENOTSUP;
1786 }
1787 return 0;
1788}
1789
1790static void pp_close(CharDriverState *chr)
1791{
1792 ParallelCharDriver *drv = chr->opaque;
1793 int fd = drv->fd;
1794
1795 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1796 ioctl(fd, PPRELEASE);
1797 close(fd);
7267c094 1798 g_free(drv);
a425d23f 1799 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1800}
1801
d0d7708b
DB		 1802static CharDriverState *qemu_chr_open_pp_fd(int fd,
1803 ChardevCommon *backend,
1804 Error **errp)
6f97dba0
AL		 1805{
1806 CharDriverState *chr;
1807 ParallelCharDriver *drv;
6f97dba0
AL		 1808
1809 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1810 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1811 close(fd);
1f51470d 1812 return NULL;
6f97dba0
AL		 1813 }
1814
d0d7708b
DB		 1815 chr = qemu_chr_alloc(backend, errp);
1816 if (!chr) {
1817 return NULL;
1818 }
27ef9cb0
PB		 1819
1820 drv = g_new0(ParallelCharDriver, 1);
1821 chr->opaque = drv;
6f97dba0
AL		 1822 chr->chr_write = null_chr_write;
1823 chr->chr_ioctl = pp_ioctl;
1824 chr->chr_close = pp_close;
27ef9cb0
PB		 1825
1826 drv->fd = fd;
1827 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1828
1f51470d 1829 return chr;
6f97dba0
AL		 1830}
1831#endif /* __linux__ */
1832
a167ba50 1833#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1834
1835#define HAVE_CHARDEV_PARPORT 1
1836
6972f935
BS		 1837static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1838{
e0efb993 1839 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1840 uint8_t b;
1841
1842 switch(cmd) {
1843 case CHR_IOCTL_PP_READ_DATA:
1844 if (ioctl(fd, PPIGDATA, &b) < 0)
1845 return -ENOTSUP;
1846 *(uint8_t *)arg = b;
1847 break;
1848 case CHR_IOCTL_PP_WRITE_DATA:
1849 b = *(uint8_t *)arg;
1850 if (ioctl(fd, PPISDATA, &b) < 0)
1851 return -ENOTSUP;
1852 break;
1853 case CHR_IOCTL_PP_READ_CONTROL:
1854 if (ioctl(fd, PPIGCTRL, &b) < 0)
1855 return -ENOTSUP;
1856 *(uint8_t *)arg = b;
1857 break;
1858 case CHR_IOCTL_PP_WRITE_CONTROL:
1859 b = *(uint8_t *)arg;
1860 if (ioctl(fd, PPISCTRL, &b) < 0)
1861 return -ENOTSUP;
1862 break;
1863 case CHR_IOCTL_PP_READ_STATUS:
1864 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1865 return -ENOTSUP;
1866 *(uint8_t *)arg = b;
1867 break;
1868 default:
1869 return -ENOTSUP;
1870 }
1871 return 0;
1872}
1873
d0d7708b 1874static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1875 ChardevCommon *backend,
d0d7708b 1876 Error **errp)
6972f935
BS		 1877{
1878 CharDriverState *chr;
6972f935 1879
0850d49c 1880 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1881 if (!chr) {
1882 return NULL;
1883 }
e0efb993 1884 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1885 chr->chr_write = null_chr_write;
1886 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1887 chr->explicit_be_open = true;
1f51470d 1888 return chr;
6972f935
BS		 1889}
1890#endif
1891
6f97dba0
AL		 1892#else /* _WIN32 */
1893
d809ab95
PB		 1894#define HAVE_CHARDEV_SERIAL 1
1895
6f97dba0
AL		 1896typedef struct {
1897 int max_size;
1898 HANDLE hcom, hrecv, hsend;
9005b2a7 1899 OVERLAPPED orecv;
6f97dba0
AL		 1900 BOOL fpipe;
1901 DWORD len;
9005b2a7
PB		 1902
1903 /* Protected by the CharDriverState chr_write_lock. */
1904 OVERLAPPED osend;
6f97dba0
AL		 1905} WinCharState;
1906
db418a0a
FC		 1907typedef struct {
1908 HANDLE hStdIn;
1909 HANDLE hInputReadyEvent;
1910 HANDLE hInputDoneEvent;
1911 HANDLE hInputThread;
1912 uint8_t win_stdio_buf;
1913} WinStdioCharState;
1914
6f97dba0
AL		 1915#define NSENDBUF 2048
1916#define NRECVBUF 2048
1917#define MAXCONNECT 1
1918#define NTIMEOUT 5000
1919
1920static int win_chr_poll(void *opaque);
1921static int win_chr_pipe_poll(void *opaque);
1922
1923static void win_chr_close(CharDriverState *chr)
1924{
1925 WinCharState *s = chr->opaque;
1926
1927 if (s->hsend) {
1928 CloseHandle(s->hsend);
1929 s->hsend = NULL;
1930 }
1931 if (s->hrecv) {
1932 CloseHandle(s->hrecv);
1933 s->hrecv = NULL;
1934 }
1935 if (s->hcom) {
1936 CloseHandle(s->hcom);
1937 s->hcom = NULL;
1938 }
1939 if (s->fpipe)
1940 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1941 else
1942 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1943
a425d23f 1944 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1945}
1946
6511d396 1947static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1948{
1949 WinCharState *s = chr->opaque;
1950 COMMCONFIG comcfg;
1951 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1952 COMSTAT comstat;
1953 DWORD size;
1954 DWORD err;
1955
1956 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1957 if (!s->hsend) {
6511d396 1958 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1959 goto fail;
1960 }
1961 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1962 if (!s->hrecv) {
6511d396 1963 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1964 goto fail;
1965 }
1966
1967 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1968 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1969 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1970 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1971 s->hcom = NULL;
1972 goto fail;
1973 }
1974
1975 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1976 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1977 goto fail;
1978 }
1979
1980 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1981 size = sizeof(COMMCONFIG);
1982 GetDefaultCommConfig(filename, &comcfg, &size);
1983 comcfg.dcb.DCBlength = sizeof(DCB);
1984 CommConfigDialog(filename, NULL, &comcfg);
1985
1986 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1987 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1988 goto fail;
1989 }
1990
1991 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1992 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1993 goto fail;
1994 }
1995
1996 cto.ReadIntervalTimeout = MAXDWORD;
1997 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1998 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1999 goto fail;
2000 }
2001
2002 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2003 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2004 goto fail;
2005 }
2006 qemu_add_polling_cb(win_chr_poll, chr);
2007 return 0;
2008
2009 fail:
2010 win_chr_close(chr);
2011 return -1;
2012}
2013
9005b2a7 2014/* Called with chr_write_lock held. */
6f97dba0
AL		 2015static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2016{
2017 WinCharState *s = chr->opaque;
2018 DWORD len, ret, size, err;
2019
2020 len = len1;
2021 ZeroMemory(&s->osend, sizeof(s->osend));
2022 s->osend.hEvent = s->hsend;
2023 while (len > 0) {
2024 if (s->hsend)
2025 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2026 else
2027 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2028 if (!ret) {
2029 err = GetLastError();
2030 if (err == ERROR_IO_PENDING) {
2031 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2032 if (ret) {
2033 buf += size;
2034 len -= size;
2035 } else {
2036 break;
2037 }
2038 } else {
2039 break;
2040 }
2041 } else {
2042 buf += size;
2043 len -= size;
2044 }
2045 }
2046 return len1 - len;
2047}
2048
2049static int win_chr_read_poll(CharDriverState *chr)
2050{
2051 WinCharState *s = chr->opaque;
2052
909cda12 2053 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2054 return s->max_size;
2055}
2056
2057static void win_chr_readfile(CharDriverState *chr)
2058{
2059 WinCharState *s = chr->opaque;
2060 int ret, err;
9bd7854e 2061 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2062 DWORD size;
2063
2064 ZeroMemory(&s->orecv, sizeof(s->orecv));
2065 s->orecv.hEvent = s->hrecv;
2066 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2067 if (!ret) {
2068 err = GetLastError();
2069 if (err == ERROR_IO_PENDING) {
2070 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2071 }
2072 }
2073
2074 if (size > 0) {
fa5efccb 2075 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2076 }
2077}
2078
2079static void win_chr_read(CharDriverState *chr)
2080{
2081 WinCharState *s = chr->opaque;
2082
2083 if (s->len > s->max_size)
2084 s->len = s->max_size;
2085 if (s->len == 0)
2086 return;
2087
2088 win_chr_readfile(chr);
2089}
2090
2091static int win_chr_poll(void *opaque)
2092{
2093 CharDriverState *chr = opaque;
2094 WinCharState *s = chr->opaque;
2095 COMSTAT status;
2096 DWORD comerr;
2097
2098 ClearCommError(s->hcom, &comerr, &status);
2099 if (status.cbInQue > 0) {
2100 s->len = status.cbInQue;
2101 win_chr_read_poll(chr);
2102 win_chr_read(chr);
2103 return 1;
2104 }
2105 return 0;
2106}
2107
6511d396 2108static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2109 ChardevCommon *backend,
6511d396 2110 Error **errp)
6f97dba0
AL		 2111{
2112 CharDriverState *chr;
2113 WinCharState *s;
2114
d0d7708b
DB		 2115 chr = qemu_chr_alloc(backend, errp);
2116 if (!chr) {
2117 return NULL;
2118 }
2d528d45 2119 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2120 chr->opaque = s;
2121 chr->chr_write = win_chr_write;
2122 chr->chr_close = win_chr_close;
2123
6511d396 2124 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2125 g_free(s);
d0d7708b 2126 qemu_chr_free_common(chr);
1f51470d 2127 return NULL;
6f97dba0 2128 }
1f51470d 2129 return chr;
6f97dba0
AL		 2130}
2131
2132static int win_chr_pipe_poll(void *opaque)
2133{
2134 CharDriverState *chr = opaque;
2135 WinCharState *s = chr->opaque;
2136 DWORD size;
2137
2138 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2139 if (size > 0) {
2140 s->len = size;
2141 win_chr_read_poll(chr);
2142 win_chr_read(chr);
2143 return 1;
2144 }
2145 return 0;
2146}
2147
20cbe7a2
PB		 2148static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2149 Error **errp)
6f97dba0
AL		 2150{
2151 WinCharState *s = chr->opaque;
2152 OVERLAPPED ov;
2153 int ret;
2154 DWORD size;
0ff0fad2 2155 char *openname;
6f97dba0
AL		 2156
2157 s->fpipe = TRUE;
2158
2159 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2160 if (!s->hsend) {
20cbe7a2 2161 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2162 goto fail;
2163 }
2164 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2165 if (!s->hrecv) {
20cbe7a2 2166 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2167 goto fail;
2168 }
2169
0ff0fad2 2170 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2171 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2172 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2173 PIPE_WAIT,
2174 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2175 g_free(openname);
6f97dba0 2176 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2177 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2178 s->hcom = NULL;
2179 goto fail;
2180 }
2181
2182 ZeroMemory(&ov, sizeof(ov));
2183 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2184 ret = ConnectNamedPipe(s->hcom, &ov);
2185 if (ret) {
20cbe7a2 2186 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2187 goto fail;
2188 }
2189
2190 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2191 if (!ret) {
20cbe7a2 2192 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2193 if (ov.hEvent) {
2194 CloseHandle(ov.hEvent);
2195 ov.hEvent = NULL;
2196 }
2197 goto fail;
2198 }
2199
2200 if (ov.hEvent) {
2201 CloseHandle(ov.hEvent);
2202 ov.hEvent = NULL;
2203 }
2204 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2205 return 0;
2206
2207 fail:
2208 win_chr_close(chr);
2209 return -1;
2210}
2211
2212
20cbe7a2
PB		 2213static CharDriverState *qemu_chr_open_pipe(const char *id,
2214 ChardevBackend *backend,
2215 ChardevReturn *ret,
2216 Error **errp)
6f97dba0 2217{
32bafa8f 2218 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2219 const char *filename = opts->device;
6f97dba0
AL		 2220 CharDriverState *chr;
2221 WinCharState *s;
f194a1ae 2222 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2223
d0d7708b
DB		 2224 chr = qemu_chr_alloc(common, errp);
2225 if (!chr) {
2226 return NULL;
2227 }
2d528d45 2228 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2229 chr->opaque = s;
2230 chr->chr_write = win_chr_write;
2231 chr->chr_close = win_chr_close;
2232
20cbe7a2 2233 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2234 g_free(s);
d0d7708b 2235 qemu_chr_free_common(chr);
1f51470d 2236 return NULL;
6f97dba0 2237 }
1f51470d 2238 return chr;
6f97dba0
AL		 2239}
2240
d0d7708b
DB		 2241static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2242 ChardevCommon *backend,
2243 Error **errp)
6f97dba0
AL		 2244{
2245 CharDriverState *chr;
2246 WinCharState *s;
2247
d0d7708b
DB		 2248 chr = qemu_chr_alloc(backend, errp);
2249 if (!chr) {
2250 return NULL;
2251 }
2d528d45 2252 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2253 s->hcom = fd_out;
2254 chr->opaque = s;
2255 chr->chr_write = win_chr_write;
1f51470d 2256 return chr;
6f97dba0
AL		 2257}
2258
122e5ed4
PB		 2259static CharDriverState *qemu_chr_open_win_con(const char *id,
2260 ChardevBackend *backend,
2261 ChardevReturn *ret,
2262 Error **errp)
6f97dba0 2263{
32bafa8f 2264 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2265 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2266 common, errp);
6f97dba0
AL		 2267}
2268
db418a0a
FC		 2269static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2270{
2271 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2272 DWORD dwSize;
2273 int len1;
2274
2275 len1 = len;
2276
2277 while (len1 > 0) {
2278 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2279 break;
2280 }
2281 buf += dwSize;
2282 len1 -= dwSize;
2283 }
2284
2285 return len - len1;
2286}
2287
2288static void win_stdio_wait_func(void *opaque)
2289{
2290 CharDriverState *chr = opaque;
2291 WinStdioCharState *stdio = chr->opaque;
2292 INPUT_RECORD buf[4];
2293 int ret;
2294 DWORD dwSize;
2295 int i;
2296
dff7424d 2297 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2298
2299 if (!ret) {
2300 /* Avoid error storm */
2301 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2302 return;
2303 }
2304
2305 for (i = 0; i < dwSize; i++) {
2306 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2307
2308 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2309 int j;
2310 if (kev->uChar.AsciiChar != 0) {
2311 for (j = 0; j < kev->wRepeatCount; j++) {
2312 if (qemu_chr_be_can_write(chr)) {
2313 uint8_t c = kev->uChar.AsciiChar;
2314 qemu_chr_be_write(chr, &c, 1);
2315 }
2316 }
2317 }
2318 }
2319 }
2320}
2321
2322static DWORD WINAPI win_stdio_thread(LPVOID param)
2323{
2324 CharDriverState *chr = param;
2325 WinStdioCharState *stdio = chr->opaque;
2326 int ret;
2327 DWORD dwSize;
2328
2329 while (1) {
2330
2331 /* Wait for one byte */
2332 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2333
2334 /* Exit in case of error, continue if nothing read */
2335 if (!ret) {
2336 break;
2337 }
2338 if (!dwSize) {
2339 continue;
2340 }
2341
2342 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2343 if (stdio->win_stdio_buf == '\r') {
2344 continue;
2345 }
2346
2347 /* Signal the main thread and wait until the byte was eaten */
2348 if (!SetEvent(stdio->hInputReadyEvent)) {
2349 break;
2350 }
2351 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2352 != WAIT_OBJECT_0) {
2353 break;
2354 }
2355 }
2356
2357 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2358 return 0;
2359}
2360
2361static void win_stdio_thread_wait_func(void *opaque)
2362{
2363 CharDriverState *chr = opaque;
2364 WinStdioCharState *stdio = chr->opaque;
2365
2366 if (qemu_chr_be_can_write(chr)) {
2367 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2368 }
2369
2370 SetEvent(stdio->hInputDoneEvent);
2371}
2372
2373static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2374{
2375 WinStdioCharState *stdio = chr->opaque;
2376 DWORD dwMode = 0;
2377
2378 GetConsoleMode(stdio->hStdIn, &dwMode);
2379
2380 if (echo) {
2381 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2382 } else {
2383 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2384 }
2385}
2386
2387static void win_stdio_close(CharDriverState *chr)
2388{
2389 WinStdioCharState *stdio = chr->opaque;
2390
2391 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2392 CloseHandle(stdio->hInputReadyEvent);
2393 }
2394 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2395 CloseHandle(stdio->hInputDoneEvent);
2396 }
2397 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2398 TerminateThread(stdio->hInputThread, 0);
2399 }
2400
2401 g_free(chr->opaque);
2402 g_free(chr);
db418a0a
FC		 2403}
2404
8c84b25d
PB		 2405static CharDriverState *qemu_chr_open_stdio(const char *id,
2406 ChardevBackend *backend,
2407 ChardevReturn *ret,
2408 Error **errp)
db418a0a
FC		 2409{
2410 CharDriverState *chr;
2411 WinStdioCharState *stdio;
2412 DWORD dwMode;
2413 int is_console = 0;
32bafa8f 2414 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2415
d0d7708b
DB		 2416 chr = qemu_chr_alloc(common, errp);
2417 if (!chr) {
2418 return NULL;
2419 }
2d528d45 2420 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2421
2422 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2423 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2424 error_setg(errp, "cannot open stdio: invalid handle");
2425 return NULL;
db418a0a
FC		 2426 }
2427
2428 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2429
2430 chr->opaque = stdio;
2431 chr->chr_write = win_stdio_write;
2432 chr->chr_close = win_stdio_close;
2433
ed7a1540
AL		 2434 if (is_console) {
2435 if (qemu_add_wait_object(stdio->hStdIn,
2436 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2437 error_setg(errp, "qemu_add_wait_object: failed");
2438 goto err1;
ed7a1540
AL		 2439 }
2440 } else {
2441 DWORD dwId;
2442
2443 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2444 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2445 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2446 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2447 error_setg(errp, "cannot create event");
2448 goto err2;
ed7a1540
AL		 2449 }
2450 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2451 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2452 error_setg(errp, "qemu_add_wait_object: failed");
2453 goto err2;
2454 }
2455 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2456 chr, 0, &dwId);
2457
2458 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2459 error_setg(errp, "cannot create stdio thread");
2460 goto err3;
db418a0a
FC		 2461 }
2462 }
2463
2464 dwMode |= ENABLE_LINE_INPUT;
2465
ed7a1540 2466 if (is_console) {
db418a0a
FC		 2467 /* set the terminal in raw mode */
2468 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2469 dwMode |= ENABLE_PROCESSED_INPUT;
2470 }
2471
2472 SetConsoleMode(stdio->hStdIn, dwMode);
2473
2474 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2475 qemu_chr_fe_set_echo(chr, false);
2476
1f51470d 2477 return chr;
8c84b25d
PB		 2478
2479err3:
2480 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2481err2:
2482 CloseHandle(stdio->hInputReadyEvent);
2483 CloseHandle(stdio->hInputDoneEvent);
2484err1:
2485 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2486 return NULL;
db418a0a 2487}
6f97dba0
AL		 2488#endif /* !_WIN32 */
2489
5ab8211b 2490
6f97dba0
AL		 2491/***********************************************************/
2492/* UDP Net console */
2493
2494typedef struct {
9894dc0c 2495 QIOChannel *ioc;
9bd7854e 2496 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2497 int bufcnt;
2498 int bufptr;
2499 int max_size;
2500} NetCharDriver;
2501
9005b2a7 2502/* Called with chr_write_lock held. */
6f97dba0
AL		 2503static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2504{
2505 NetCharDriver *s = chr->opaque;
76a9644b 2506
9894dc0c
DB		 2507 return qio_channel_write(
2508 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2509}
2510
2511static int udp_chr_read_poll(void *opaque)
2512{
2513 CharDriverState *chr = opaque;
2514 NetCharDriver *s = chr->opaque;
2515
909cda12 2516 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2517
2518 /* If there were any stray characters in the queue process them
2519 * first
2520 */
2521 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2522 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2523 s->bufptr++;
909cda12 2524 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2525 }
2526 return s->max_size;
2527}
2528
9894dc0c 2529static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2530{
2531 CharDriverState *chr = opaque;
2532 NetCharDriver *s = chr->opaque;
9894dc0c 2533 ssize_t ret;
6f97dba0 2534
cdbf6e16
PB		 2535 if (s->max_size == 0) {
2536 return TRUE;
2537 }
9894dc0c
DB		 2538 ret = qio_channel_read(
2539 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2540 if (ret <= 0) {
26da70c7 2541 remove_fd_in_watch(chr);
76a9644b
AL		 2542 return FALSE;
2543 }
9894dc0c 2544 s->bufcnt = ret;
6f97dba0
AL		 2545
2546 s->bufptr = 0;
2547 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2548 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2549 s->bufptr++;
909cda12 2550 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2551 }
76a9644b
AL		 2552
2553 return TRUE;
6f97dba0
AL		 2554}
2555
2556static void udp_chr_update_read_handler(CharDriverState *chr)
2557{
2558 NetCharDriver *s = chr->opaque;
2559
26da70c7 2560 remove_fd_in_watch(chr);
9894dc0c
DB		 2561 if (s->ioc) {
2562 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2563 udp_chr_read_poll,
7ba9addc 2564 udp_chr_read, chr);
6f97dba0
AL		 2565 }
2566}
2567
819f56b7
AL		 2568static void udp_chr_close(CharDriverState *chr)
2569{
2570 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2571
2572 remove_fd_in_watch(chr);
9894dc0c
DB		 2573 if (s->ioc) {
2574 object_unref(OBJECT(s->ioc));
819f56b7 2575 }
7267c094 2576 g_free(s);
a425d23f 2577 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2578}
2579
9894dc0c
DB		 2580static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2581 ChardevCommon *backend,
2582 Error **errp)
6f97dba0
AL		 2583{
2584 CharDriverState *chr = NULL;
2585 NetCharDriver *s = NULL;
6f97dba0 2586
d0d7708b
DB		 2587 chr = qemu_chr_alloc(backend, errp);
2588 if (!chr) {
2589 return NULL;
2590 }
2d528d45 2591 s = g_new0(NetCharDriver, 1);
6f97dba0 2592
9894dc0c 2593 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2594 s->bufcnt = 0;
2595 s->bufptr = 0;
2596 chr->opaque = s;
2597 chr->chr_write = udp_chr_write;
2598 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2599 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2600 /* be isn't opened until we get a connection */
2601 chr->explicit_be_open = true;
1f51470d 2602 return chr;
3ecc059d 2603}
6f97dba0 2604
6f97dba0
AL		 2605/***********************************************************/
2606/* TCP Net console */
2607
2608typedef struct {
a8fb5427
DB		 2609 QIOChannel *ioc; /* Client I/O channel */
2610 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2611 QIOChannelSocket *listen_ioc;
7ba9addc 2612 guint listen_tag;
a8fb5427 2613 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2614 int connected;
2615 int max_size;
2616 int do_telnetopt;
2617 int do_nodelay;
2618 int is_unix;
c76bf6bb 2619 int *read_msgfds;
9894dc0c 2620 size_t read_msgfds_num;
d39aac7a 2621 int *write_msgfds;
9894dc0c 2622 size_t write_msgfds_num;
cfb429cb
CM		 2623
2624 SocketAddress *addr;
2625 bool is_listen;
2626 bool is_telnet;
5dd1f02b
CM		 2627
2628 guint reconnect_timer;
2629 int64_t reconnect_time;
5008e5b7 2630 bool connect_err_reported;
6f97dba0
AL		 2631} TCPCharDriver;
2632
5dd1f02b
CM		 2633static gboolean socket_reconnect_timeout(gpointer opaque);
2634
2635static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2636{
2637 TCPCharDriver *s = chr->opaque;
2638 assert(s->connected == 0);
2639 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2640 socket_reconnect_timeout, chr);
2641}
2642
5008e5b7
CM		 2643static void check_report_connect_error(CharDriverState *chr,
2644 Error *err)
2645{
2646 TCPCharDriver *s = chr->opaque;
2647
2648 if (!s->connect_err_reported) {
2649 error_report("Unable to connect character device %s: %s",
2650 chr->label, error_get_pretty(err));
2651 s->connect_err_reported = true;
2652 }
2653 qemu_chr_socket_restart_timer(chr);
2654}
2655
9894dc0c
DB		 2656static gboolean tcp_chr_accept(QIOChannel *chan,
2657 GIOCondition cond,
2658 void *opaque);
d39aac7a 2659
9005b2a7 2660/* Called with chr_write_lock held. */
6f97dba0
AL		 2661static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2662{
2663 TCPCharDriver *s = chr->opaque;
2664 if (s->connected) {
9894dc0c
DB		 2665 int ret = io_channel_send_full(s->ioc, buf, len,
2666 s->write_msgfds,
2667 s->write_msgfds_num);
2668
2669 /* free the written msgfds, no matter what */
2670 if (s->write_msgfds_num) {
2671 g_free(s->write_msgfds);
2672 s->write_msgfds = 0;
2673 s->write_msgfds_num = 0;
d39aac7a 2674 }
9894dc0c
DB		 2675
2676 return ret;
455aa1e0 2677 } else {
6db0fdce 2678 /* XXX: indicate an error ? */
455aa1e0 2679 return len;
6f97dba0
AL		 2680 }
2681}
2682
2683static int tcp_chr_read_poll(void *opaque)
2684{
2685 CharDriverState *chr = opaque;
2686 TCPCharDriver *s = chr->opaque;
2687 if (!s->connected)
2688 return 0;
909cda12 2689 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2690 return s->max_size;
2691}
2692
2693#define IAC 255
2694#define IAC_BREAK 243
2695static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2696 TCPCharDriver *s,
2697 uint8_t *buf, int *size)
2698{
2699 /* Handle any telnet client's basic IAC options to satisfy char by
2700 * char mode with no echo. All IAC options will be removed from
2701 * the buf and the do_telnetopt variable will be used to track the
2702 * state of the width of the IAC information.
2703 *
2704 * IAC commands come in sets of 3 bytes with the exception of the
2705 * "IAC BREAK" command and the double IAC.
2706 */
2707
2708 int i;
2709 int j = 0;
2710
2711 for (i = 0; i < *size; i++) {
2712 if (s->do_telnetopt > 1) {
2713 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2714 /* Double IAC means send an IAC */
2715 if (j != i)
2716 buf[j] = buf[i];
2717 j++;
2718 s->do_telnetopt = 1;
2719 } else {
2720 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2721 /* Handle IAC break commands by sending a serial break */
a425d23f 2722 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2723 s->do_telnetopt++;
2724 }
2725 s->do_telnetopt++;
2726 }
2727 if (s->do_telnetopt >= 4) {
2728 s->do_telnetopt = 1;
2729 }
2730 } else {
2731 if ((unsigned char)buf[i] == IAC) {
2732 s->do_telnetopt = 2;
2733 } else {
2734 if (j != i)
2735 buf[j] = buf[i];
2736 j++;
2737 }
2738 }
2739 }
2740 *size = j;
2741}
2742
c76bf6bb 2743static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2744{
2745 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2746 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2747
c4095726
MT		 2748 assert(num <= TCP_MAX_FDS);
2749
c76bf6bb 2750 if (to_copy) {
d2fc39b4
SH		 2751 int i;
2752
c76bf6bb
NN		 2753 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2754
d2fc39b4
SH		 2755 /* Close unused fds */
2756 for (i = to_copy; i < s->read_msgfds_num; i++) {
2757 close(s->read_msgfds[i]);
2758 }
2759
c76bf6bb
NN		 2760 g_free(s->read_msgfds);
2761 s->read_msgfds = 0;
2762 s->read_msgfds_num = 0;
2763 }
2764
2765 return to_copy;
7d174059
MM		 2766}
2767
d39aac7a
NN		 2768static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2769{
2770 TCPCharDriver *s = chr->opaque;
2771
2772 /* clear old pending fd array */
ef1e1e07 2773 g_free(s->write_msgfds);
869a58af 2774 s->write_msgfds = NULL;
5b498459 2775 s->write_msgfds_num = 0;
d39aac7a 2776
5c7eaabf
MAL		 2777 if (!s->connected ||
2778 !qio_channel_has_feature(s->ioc,
2779 QIO_CHANNEL_FEATURE_FD_PASS)) {
2780 return -1;
2781 }
2782
d39aac7a 2783 if (num) {
2d528d45 2784 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2785 memcpy(s->write_msgfds, fds, num * sizeof(int));
2786 }
2787
2788 s->write_msgfds_num = num;
2789
2790 return 0;
2791}
2792
9894dc0c 2793static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2794{
2795 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2796 struct iovec iov = { .iov_base = buf, .iov_len = len };
2797 int ret;
2798 size_t i;
2799 int *msgfds = NULL;
2800 size_t msgfds_num = 0;
2801
2802 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2803 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2804 &msgfds, &msgfds_num,
2805 NULL);
2806 } else {
2807 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2808 NULL, NULL,
2809 NULL);
2810 }
7d174059 2811
b6572b4f
MAL		 2812 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2813 errno = EAGAIN;
2814 ret = -1;
2815 } else if (ret == -1) {
2816 errno = EIO;
2817 }
2818
9894dc0c 2819 if (msgfds_num) {
c76bf6bb
NN		 2820 /* close and clean read_msgfds */
2821 for (i = 0; i < s->read_msgfds_num; i++) {
2822 close(s->read_msgfds[i]);
2823 }
9b938c72 2824
c76bf6bb
NN		 2825 if (s->read_msgfds_num) {
2826 g_free(s->read_msgfds);
2827 }
2828
9894dc0c
DB		 2829 s->read_msgfds = msgfds;
2830 s->read_msgfds_num = msgfds_num;
7d174059 2831 }
7d174059 2832
9894dc0c
DB		 2833 for (i = 0; i < s->read_msgfds_num; i++) {
2834 int fd = s->read_msgfds[i];
2835 if (fd < 0) {
2836 continue;
2837 }
9977c894 2838
9894dc0c
DB		 2839 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2840 qemu_set_block(fd);
7d174059 2841
9894dc0c
DB		 2842#ifndef MSG_CMSG_CLOEXEC
2843 qemu_set_cloexec(fd);
06138651 2844#endif
06138651 2845 }
9977c894 2846
7d174059 2847 return ret;
9977c894 2848}
9977c894 2849
d3cc5bc4
AS		 2850static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2851{
2852 TCPCharDriver *s = chr->opaque;
9894dc0c 2853 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2854}
2855
5b498459 2856static void tcp_chr_free_connection(CharDriverState *chr)
7b0bfdf5
NN		 2857{
2858 TCPCharDriver *s = chr->opaque;
5b498459 2859 int i;
7b0bfdf5 2860
342f7a9d
MAL		 2861 if (!s->connected) {
2862 return;
2863 }
2864
5b498459
MAL		 2865 if (s->read_msgfds_num) {
2866 for (i = 0; i < s->read_msgfds_num; i++) {
2867 close(s->read_msgfds[i]);
2868 }
2869 g_free(s->read_msgfds);
2870 s->read_msgfds = NULL;
2871 s->read_msgfds_num = 0;
7b0bfdf5 2872 }
5b498459 2873
6167ebbd 2874 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2875 remove_fd_in_watch(chr);
a8fb5427
DB		 2876 object_unref(OBJECT(s->sioc));
2877 s->sioc = NULL;
9894dc0c
DB		 2878 object_unref(OBJECT(s->ioc));
2879 s->ioc = NULL;
0ff0fad2 2880 g_free(chr->filename);
5b498459
MAL		 2881 chr->filename = NULL;
2882 s->connected = 0;
2883}
2884
2885static void tcp_chr_disconnect(CharDriverState *chr)
2886{
2887 TCPCharDriver *s = chr->opaque;
2888
2889 if (!s->connected) {
2890 return;
2891 }
2892
2893 tcp_chr_free_connection(chr);
2894
2895 if (s->listen_ioc) {
2896 s->listen_tag = qio_channel_add_watch(
2897 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
2898 }
0ff0fad2
DB		 2899 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2900 s->is_listen, s->is_telnet);
7b0bfdf5 2901 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2902 if (s->reconnect_time) {
2903 qemu_chr_socket_restart_timer(chr);
2904 }
7b0bfdf5
NN		 2905}
2906
9894dc0c 2907static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2908{
2909 CharDriverState *chr = opaque;
2910 TCPCharDriver *s = chr->opaque;
9bd7854e 2911 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2912 int len, size;
2913
2ea5a7af 2914 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2915 return TRUE;
2ea5a7af 2916 }
6f97dba0
AL		 2917 len = sizeof(buf);
2918 if (len > s->max_size)
2919 len = s->max_size;
9977c894 2920 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2921 if (size == 0 || size == -1) {
6f97dba0 2922 /* connection closed */
7b0bfdf5 2923 tcp_chr_disconnect(chr);
6f97dba0
AL		 2924 } else if (size > 0) {
2925 if (s->do_telnetopt)
2926 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2927 if (size > 0)
fa5efccb 2928 qemu_chr_be_write(chr, buf, size);
6f97dba0 2929 }
2ea5a7af
AL		 2930
2931 return TRUE;
6f97dba0
AL		 2932}
2933
7b0bfdf5
NN		 2934static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2935{
2936 TCPCharDriver *s = chr->opaque;
2937 int size;
2938
2939 if (!s->connected) {
2940 return 0;
2941 }
2942
2943 size = tcp_chr_recv(chr, (void *) buf, len);
2944 if (size == 0) {
2945 /* connection closed */
2946 tcp_chr_disconnect(chr);
2947 }
2948
2949 return size;
2950}
2951
6f97dba0
AL		 2952static void tcp_chr_connect(void *opaque)
2953{
2954 CharDriverState *chr = opaque;
2955 TCPCharDriver *s = chr->opaque;
16cc4ffe 2956
0ff0fad2 2957 g_free(chr->filename);
a8fb5427
DB		 2958 chr->filename = sockaddr_to_str(
2959 &s->sioc->localAddr, s->sioc->localAddrLen,
2960 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2961 s->is_listen, s->is_telnet);
6f97dba0
AL		 2962
2963 s->connected = 1;
9894dc0c
DB		 2964 if (s->ioc) {
2965 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2966 tcp_chr_read_poll,
7ba9addc 2967 tcp_chr_read, chr);
bbdd2ad0 2968 }
fee204fd 2969 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2970}
2971
ac1b84dd
GH		 2972static void tcp_chr_update_read_handler(CharDriverState *chr)
2973{
2974 TCPCharDriver *s = chr->opaque;
2975
1e94f23d
DB		 2976 if (!s->connected) {
2977 return;
2978 }
2979
ac1b84dd 2980 remove_fd_in_watch(chr);
9894dc0c
DB		 2981 if (s->ioc) {
2982 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2983 tcp_chr_read_poll,
ac1b84dd
GH		 2984 tcp_chr_read, chr);
2985 }
2986}
2987
f2001a7e
DB		 2988typedef struct {
2989 CharDriverState *chr;
2990 char buf[12];
2991 size_t buflen;
2992} TCPCharDriverTelnetInit;
2993
2994static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2995 GIOCondition cond G_GNUC_UNUSED,
2996 gpointer user_data)
6f97dba0 2997{
f2001a7e
DB		 2998 TCPCharDriverTelnetInit *init = user_data;
2999 ssize_t ret;
3000
3001 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3002 if (ret < 0) {
3003 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3004 ret = 0;
3005 } else {
3006 tcp_chr_disconnect(init->chr);
3007 return FALSE;
3008 }
3009 }
3010 init->buflen -= ret;
3011
3012 if (init->buflen == 0) {
3013 tcp_chr_connect(init->chr);
3014 return FALSE;
3015 }
3016
3017 memmove(init->buf, init->buf + ret, init->buflen);
3018
3019 return TRUE;
3020}
3021
3022static void tcp_chr_telnet_init(CharDriverState *chr)
3023{
3024 TCPCharDriver *s = chr->opaque;
3025 TCPCharDriverTelnetInit *init =
3026 g_new0(TCPCharDriverTelnetInit, 1);
3027 size_t n = 0;
3028
3029 init->chr = chr;
3030 init->buflen = 12;
3031
3032#define IACSET(x, a, b, c) \
3033 do { \
3034 x[n++] = a; \
3035 x[n++] = b; \
3036 x[n++] = c; \
3037 } while (0)
3038
3039 /* Prep the telnet negotion to put telnet in binary,
3040 * no echo, single char mode */
3041 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3042 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3043 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3044 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3045
3046#undef IACSET
3047
3048 qio_channel_add_watch(
3049 s->ioc, G_IO_OUT,
3050 tcp_chr_telnet_init_io,
3051 init, NULL);
6f97dba0
AL		 3052}
3053
a8fb5427
DB		 3054
3055static void tcp_chr_tls_handshake(Object *source,
3056 Error *err,
3057 gpointer user_data)
3058{
3059 CharDriverState *chr = user_data;
3060 TCPCharDriver *s = chr->opaque;
3061
3062 if (err) {
3063 tcp_chr_disconnect(chr);
3064 } else {
3065 if (s->do_telnetopt) {
3066 tcp_chr_telnet_init(chr);
3067 } else {
3068 tcp_chr_connect(chr);
3069 }
3070 }
3071}
3072
3073
3074static void tcp_chr_tls_init(CharDriverState *chr)
3075{
3076 TCPCharDriver *s = chr->opaque;
3077 QIOChannelTLS *tioc;
3078 Error *err = NULL;
3079
3080 if (s->is_listen) {
3081 tioc = qio_channel_tls_new_server(
3082 s->ioc, s->tls_creds,
3083 NULL, /* XXX Use an ACL */
3084 &err);
3085 } else {
3086 tioc = qio_channel_tls_new_client(
3087 s->ioc, s->tls_creds,
32bafa8f 3088 s->addr->u.inet.data->host,
a8fb5427
DB		 3089 &err);
3090 }
3091 if (tioc == NULL) {
3092 error_free(err);
3093 tcp_chr_disconnect(chr);
3094 }
3095 object_unref(OBJECT(s->ioc));
3096 s->ioc = QIO_CHANNEL(tioc);
3097
3098 qio_channel_tls_handshake(tioc,
3099 tcp_chr_tls_handshake,
3100 chr,
3101 NULL);
3102}
3103
3104
9894dc0c 3105static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3106{
3107 TCPCharDriver *s = chr->opaque;
9894dc0c 3108 if (s->ioc != NULL) {
13661089 3109 return -1;
9894dc0c 3110 }
13661089 3111
9894dc0c
DB		 3112 s->ioc = QIO_CHANNEL(sioc);
3113 object_ref(OBJECT(sioc));
a8fb5427
DB		 3114 s->sioc = sioc;
3115 object_ref(OBJECT(sioc));
9894dc0c 3116
64c800f8
DB		 3117 qio_channel_set_blocking(s->ioc, false, NULL);
3118
9894dc0c
DB		 3119 if (s->do_nodelay) {
3120 qio_channel_set_delay(s->ioc, false);
3121 }
910b6368
PB		 3122 if (s->listen_tag) {
3123 g_source_remove(s->listen_tag);
3124 s->listen_tag = 0;
3125 }
f2001a7e 3126
a8fb5427
DB		 3127 if (s->tls_creds) {
3128 tcp_chr_tls_init(chr);
f2001a7e 3129 } else {
a8fb5427
DB		 3130 if (s->do_telnetopt) {
3131 tcp_chr_telnet_init(chr);
3132 } else {
3133 tcp_chr_connect(chr);
3134 }
f2001a7e 3135 }
13661089
DB		 3136
3137 return 0;
3138}
3139
9894dc0c
DB		 3140
3141static int tcp_chr_add_client(CharDriverState *chr, int fd)
3142{
3143 int ret;
3144 QIOChannelSocket *sioc;
3145
3146 sioc = qio_channel_socket_new_fd(fd, NULL);
3147 if (!sioc) {
3148 return -1;
3149 }
9894dc0c
DB		 3150 ret = tcp_chr_new_client(chr, sioc);
3151 object_unref(OBJECT(sioc));
3152 return ret;
3153}
3154
3155static gboolean tcp_chr_accept(QIOChannel *channel,
3156 GIOCondition cond,
3157 void *opaque)
6f97dba0
AL		 3158{
3159 CharDriverState *chr = opaque;
9894dc0c 3160 QIOChannelSocket *sioc;
6f97dba0 3161
9894dc0c
DB		 3162 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3163 NULL);
3164 if (!sioc) {
3165 return TRUE;
6f97dba0 3166 }
9894dc0c 3167
9894dc0c
DB		 3168 tcp_chr_new_client(chr, sioc);
3169
3170 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3171
3172 return TRUE;
6f97dba0
AL		 3173}
3174
d7a04fd7
MAL		 3175static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
3176{
3177 TCPCharDriver *s = chr->opaque;
3178 QIOChannelSocket *sioc;
3179
1dc8a669
MAL		 3180 /* It can't wait on s->connected, since it is set asynchronously
3181 * in TLS and telnet cases, only wait for an accepted socket */
3182 while (!s->ioc) {
d7a04fd7
MAL		 3183 if (s->is_listen) {
3184 fprintf(stderr, "QEMU waiting for connection on: %s\n",
3185 chr->filename);
3186 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3187 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3188 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3189 } else {
3190 sioc = qio_channel_socket_new();
3191 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3192 object_unref(OBJECT(sioc));
3193 return -1;
3194 }
3195 tcp_chr_new_client(chr, sioc);
3196 object_unref(OBJECT(sioc));
3197 }
3198 }
3199
3200 return 0;
3201}
3202
6b6723c3
MAL		 3203int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
3204{
3205 if (chr->chr_wait_connected) {
3206 return chr->chr_wait_connected(chr, errp);
3207 }
3208
3209 return 0;
3210}
3211
6f97dba0
AL		 3212static void tcp_chr_close(CharDriverState *chr)
3213{
3214 TCPCharDriver *s = chr->opaque;
5b498459
MAL		 3215
3216 tcp_chr_free_connection(chr);
cfb429cb 3217
5dd1f02b
CM		 3218 if (s->reconnect_timer) {
3219 g_source_remove(s->reconnect_timer);
3220 s->reconnect_timer = 0;
3221 }
cfb429cb 3222 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3223 if (s->listen_tag) {
3224 g_source_remove(s->listen_tag);
3225 s->listen_tag = 0;
3226 }
3227 if (s->listen_ioc) {
3228 object_unref(OBJECT(s->listen_ioc));
819f56b7 3229 }
a8fb5427
DB		 3230 if (s->tls_creds) {
3231 object_unref(OBJECT(s->tls_creds));
3232 }
7267c094 3233 g_free(s);
a425d23f 3234 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3235}
3236
43ded1a0 3237
9894dc0c 3238static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3239{
9894dc0c 3240 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3241 CharDriverState *chr = opaque;
5008e5b7 3242 TCPCharDriver *s = chr->opaque;
5dd1f02b 3243
9894dc0c 3244 if (err) {
5008e5b7 3245 check_report_connect_error(chr, err);
9894dc0c 3246 object_unref(src);
5dd1f02b
CM		 3247 return;
3248 }
3249
5008e5b7 3250 s->connect_err_reported = false;
f50dfe45
DB		 3251 tcp_chr_new_client(chr, sioc);
3252 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3253}
3254
f6bd5d6e 3255
51767e7c 3256/*********************************************************/
3949e594 3257/* Ring buffer chardev */
51767e7c
LL		 3258
3259typedef struct {
3260 size_t size;
3261 size_t prod;
3262 size_t cons;
3263 uint8_t *cbuf;
3949e594 3264} RingBufCharDriver;
51767e7c 3265
3949e594 3266static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3267{
3949e594 3268 const RingBufCharDriver *d = chr->opaque;
51767e7c 3269
5c230105 3270 return d->prod - d->cons;
51767e7c
LL		 3271}
3272
9005b2a7 3273/* Called with chr_write_lock held. */
3949e594 3274static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3275{
3949e594 3276 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3277 int i;
3278
3279 if (!buf || (len < 0)) {
3280 return -1;
3281 }
3282
3283 for (i = 0; i < len; i++ ) {
5c230105
MA		 3284 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3285 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3286 d->cons = d->prod - d->size;
3287 }
3288 }
3289
3290 return 0;
3291}
3292
3949e594 3293static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3294{
3949e594 3295 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3296 int i;
3297
9005b2a7 3298 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3299 for (i = 0; i < len && d->cons != d->prod; i++) {
3300 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3301 }
9005b2a7 3302 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3303
3304 return i;
3305}
3306
3949e594 3307static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3308{
3949e594 3309 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3310
3311 g_free(d->cbuf);
3312 g_free(d);
3313 chr->opaque = NULL;
3314}
3315
479f09a1
PB		 3316static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3317 ChardevBackend *backend,
3318 ChardevReturn *ret,
4f57378f 3319 Error **errp)
51767e7c 3320{
32bafa8f 3321 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3322 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3323 CharDriverState *chr;
3949e594 3324 RingBufCharDriver *d;
51767e7c 3325
d0d7708b
DB		 3326 chr = qemu_chr_alloc(common, errp);
3327 if (!chr) {
3328 return NULL;
3329 }
51767e7c
LL		 3330 d = g_malloc(sizeof(*d));
3331
1da48c65 3332 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3333
3334 /* The size must be power of 2 */
3335 if (d->size & (d->size - 1)) {
4f57378f 3336 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3337 goto fail;
3338 }
3339
3340 d->prod = 0;
3341 d->cons = 0;
3342 d->cbuf = g_malloc0(d->size);
3343
3344 chr->opaque = d;
3949e594
MA		 3345 chr->chr_write = ringbuf_chr_write;
3346 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3347
3348 return chr;
3349
3350fail:
3351 g_free(d);
d0d7708b 3352 qemu_chr_free_common(chr);
51767e7c
LL		 3353 return NULL;
3354}
3355
8e597779 3356bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3357{
3949e594 3358 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3359}
3360
3949e594 3361void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3362 bool has_format, enum DataFormat format,
1f590cf9
LL		 3363 Error **errp)
3364{
3365 CharDriverState *chr;
c4f331b6 3366 const uint8_t *write_data;
1f590cf9 3367 int ret;
3d1bba20 3368 gsize write_count;
1f590cf9
LL		 3369
3370 chr = qemu_chr_find(device);
3371 if (!chr) {
1a69278e 3372 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3373 return;
3374 }
3375
3949e594
MA		 3376 if (!chr_is_ringbuf(chr)) {
3377 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3378 return;
3379 }
3380
1f590cf9 3381 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3382 write_data = qbase64_decode(data, -1,
3383 &write_count,
3384 errp);
3385 if (!write_data) {
3386 return;
3387 }
1f590cf9
LL		 3388 } else {
3389 write_data = (uint8_t *)data;
82e59a67 3390 write_count = strlen(data);
1f590cf9
LL		 3391 }
3392
3949e594 3393 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3394
13289fb5
MA		 3395 if (write_data != (uint8_t *)data) {
3396 g_free((void *)write_data);
3397 }
3398
1f590cf9
LL		 3399 if (ret < 0) {
3400 error_setg(errp, "Failed to write to device %s", device);
3401 return;
3402 }
3403}
3404
3949e594 3405char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3406 bool has_format, enum DataFormat format,
3407 Error **errp)
49b6d722
LL		 3408{
3409 CharDriverState *chr;
c4f331b6 3410 uint8_t *read_data;
49b6d722 3411 size_t count;
3ab651fc 3412 char *data;
49b6d722
LL		 3413
3414 chr = qemu_chr_find(device);
3415 if (!chr) {
1a69278e 3416 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3417 return NULL;
3418 }
3419
3949e594
MA		 3420 if (!chr_is_ringbuf(chr)) {
3421 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3422 return NULL;
3423 }
3424
3425 if (size <= 0) {
3426 error_setg(errp, "size must be greater than zero");
3427 return NULL;
3428 }
3429
3949e594 3430 count = ringbuf_count(chr);
49b6d722 3431 size = size > count ? count : size;
44f3bcd2 3432 read_data = g_malloc(size + 1);
49b6d722 3433
3949e594 3434 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3435
3436 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3437 data = g_base64_encode(read_data, size);
13289fb5 3438 g_free(read_data);
49b6d722 3439 } else {
3949e594
MA		 3440 /*
3441 * FIXME should read only complete, valid UTF-8 characters up
3442 * to @size bytes. Invalid sequences should be replaced by a
3443 * suitable replacement character. Except when (and only
3444 * when) ring buffer lost characters since last read, initial
3445 * continuation characters should be dropped.
3446 */
44f3bcd2 3447 read_data[size] = 0;
3ab651fc 3448 data = (char *)read_data;
49b6d722
LL		 3449 }
3450
3ab651fc 3451 return data;
49b6d722
LL		 3452}
3453
33521634 3454QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3455{
6ea314d9 3456 char host[65], port[33], width[8], height[8];
aeb2c47a 3457 int pos;
7d31544f 3458 const char *p;
191bc01b 3459 QemuOpts *opts;
8be7e7e4 3460 Error *local_err = NULL;
191bc01b 3461
8be7e7e4 3462 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3463 if (local_err) {
33394884 3464 error_report_err(local_err);
191bc01b 3465 return NULL;
8be7e7e4 3466 }
191bc01b 3467
7591c5c1
GH		 3468 if (strstart(filename, "mon:", &p)) {
3469 filename = p;
f43e47db 3470 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3471 if (strcmp(filename, "stdio") == 0) {
3472 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3473 * but pass it to the guest. Handle this only for compat syntax,
3474 * for -chardev syntax we have special option for this.
3475 * This is what -nographic did, redirecting+muxing serial+monitor
3476 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3477 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3478 }
7591c5c1
GH		 3479 }
3480
f0457e8d
GH		 3481 if (strcmp(filename, "null") == 0 ||
3482 strcmp(filename, "pty") == 0 ||
3483 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3484 strcmp(filename, "braille") == 0 ||
5692399f 3485 strcmp(filename, "testdev") == 0 ||
f0457e8d 3486 strcmp(filename, "stdio") == 0) {
f43e47db 3487 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3488 return opts;
3489 }
6ea314d9 3490 if (strstart(filename, "vc", &p)) {
f43e47db 3491 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3492 if (*p == ':') {
49aa4058 3493 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3494 /* pixels */
f43e47db
MA		 3495 qemu_opt_set(opts, "width", width, &error_abort);
3496 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3497 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3498 /* chars */
f43e47db
MA		 3499 qemu_opt_set(opts, "cols", width, &error_abort);
3500 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3501 } else {
3502 goto fail;
3503 }
3504 }
3505 return opts;
3506 }
d6c983cd 3507 if (strcmp(filename, "con:") == 0) {
f43e47db 3508 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3509 return opts;
3510 }
48b76496 3511 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3512 qemu_opt_set(opts, "backend", "serial", &error_abort);
3513 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3514 return opts;
3515 }
7d31544f 3516 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3517 qemu_opt_set(opts, "backend", "file", &error_abort);
3518 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3519 return opts;
3520 }
3521 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3522 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3523 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3524 return opts;
3525 }
aeb2c47a
GH		 3526 if (strstart(filename, "tcp:", &p) ||
3527 strstart(filename, "telnet:", &p)) {
3528 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3529 host[0] = 0;
3530 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3531 goto fail;
3532 }
f43e47db
MA		 3533 qemu_opt_set(opts, "backend", "socket", &error_abort);
3534 qemu_opt_set(opts, "host", host, &error_abort);
3535 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3536 if (p[pos] == ',') {
dc523cd3
MA		 3537 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3538 if (local_err) {
3539 error_report_err(local_err);
aeb2c47a 3540 goto fail;
dc523cd3 3541 }
aeb2c47a
GH		 3542 }
3543 if (strstart(filename, "telnet:", &p))
f43e47db 3544 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3545 return opts;
3546 }
7e1b35b4 3547 if (strstart(filename, "udp:", &p)) {
f43e47db 3548 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3549 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3550 host[0] = 0;
39324ca4 3551 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3552 goto fail;
3553 }
3554 }
f43e47db
MA		 3555 qemu_opt_set(opts, "host", host, &error_abort);
3556 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3557 if (p[pos] == '@') {
3558 p += pos + 1;
3559 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3560 host[0] = 0;
3561 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3562 goto fail;
3563 }
3564 }
f43e47db
MA		 3565 qemu_opt_set(opts, "localaddr", host, &error_abort);
3566 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3567 }
3568 return opts;
3569 }
aeb2c47a 3570 if (strstart(filename, "unix:", &p)) {
f43e47db 3571 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3572 qemu_opts_do_parse(opts, p, "path", &local_err);
3573 if (local_err) {
3574 error_report_err(local_err);
aeb2c47a 3575 goto fail;
dc523cd3 3576 }
aeb2c47a
GH		 3577 return opts;
3578 }
48b76496
GH		 3579 if (strstart(filename, "/dev/parport", NULL) ||
3580 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3581 qemu_opt_set(opts, "backend", "parport", &error_abort);
3582 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3583 return opts;
3584 }
3585 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3586 qemu_opt_set(opts, "backend", "tty", &error_abort);
3587 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3588 return opts;
3589 }
191bc01b 3590
aeb2c47a 3591fail:
191bc01b
GH		 3592 qemu_opts_del(opts);
3593 return NULL;
3594}
3595
21a933ea 3596void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3597{
3598 const char *logfile = qemu_opt_get(opts, "logfile");
3599
3600 backend->has_logfile = logfile != NULL;
3601 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3602
3603 backend->has_logappend = true;
3604 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3605}
3606
3607
846e2e49
GH		 3608static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3609 Error **errp)
3610{
3611 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3612 ChardevFile *file;
846e2e49
GH		 3613
3614 if (path == NULL) {
3615 error_setg(errp, "chardev: file: no filename given");
3616 return;
3617 }
32bafa8f 3618 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3619 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3620 file->out = g_strdup(path);
31e38a22 3621
f194a1ae
EB		 3622 file->has_append = true;
3623 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3624}
3625
7c358031
GH		 3626static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3627 Error **errp)
3628{
f194a1ae
EB		 3629 ChardevStdio *stdio;
3630
32bafa8f 3631 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3632 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3633 stdio->has_signal = true;
3634 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3635}
3636
6511d396 3637#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3638static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3639 Error **errp)
3640{
3641 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3642 ChardevHostdev *serial;
0f1cb51d
GH		 3643
3644 if (device == NULL) {
3645 error_setg(errp, "chardev: serial/tty: no device path given");
3646 return;
3647 }
32bafa8f 3648 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3649 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3650 serial->device = g_strdup(device);
0f1cb51d 3651}
6511d396 3652#endif
0f1cb51d 3653
38bfb1a6 3654#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3655static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3656 Error **errp)
3657{
3658 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3659 ChardevHostdev *parallel;
dc375097
GH		 3660
3661 if (device == NULL) {
3662 error_setg(errp, "chardev: parallel: no device path given");
3663 return;
3664 }
32bafa8f 3665 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3666 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3667 parallel->device = g_strdup(device);
dc375097 3668}
38bfb1a6 3669#endif
dc375097 3670
548cbb36
GH		 3671static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3672 Error **errp)
3673{
3674 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3675 ChardevHostdev *dev;
548cbb36
GH		 3676
3677 if (device == NULL) {
3678 error_setg(errp, "chardev: pipe: no device path given");
3679 return;
3680 }
32bafa8f 3681 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3682 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3683 dev->device = g_strdup(device);
548cbb36
GH		 3684}
3685
4f57378f
MA		 3686static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3687 Error **errp)
1da48c65
GH		 3688{
3689 int val;
f194a1ae 3690 ChardevRingbuf *ringbuf;
1da48c65 3691
32bafa8f 3692 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3693 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3694
0f953051 3695 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3696 if (val != 0) {
f194a1ae
EB		 3697 ringbuf->has_size = true;
3698 ringbuf->size = val;
1da48c65
GH		 3699 }
3700}
3701
bb6fb7c0
GH		 3702static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3703 Error **errp)
3704{
3705 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3706 ChardevMux *mux;
bb6fb7c0
GH		 3707
3708 if (chardev == NULL) {
3709 error_setg(errp, "chardev: mux: no chardev given");
3710 return;
3711 }
32bafa8f 3712 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3713 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3714 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3715}
3716
dafd325d
PM		 3717static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3718 Error **errp)
3719{
3720 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3721 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3722 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3723 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3724 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3725 const char *path = qemu_opt_get(opts, "path");
3726 const char *host = qemu_opt_get(opts, "host");
3727 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3728 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3729 SocketAddress *addr;
f194a1ae 3730 ChardevSocket *sock;
dafd325d
PM		 3731
3732 if (!path) {
3733 if (!host) {
3734 error_setg(errp, "chardev: socket: no host given");
3735 return;
3736 }
3737 if (!port) {
3738 error_setg(errp, "chardev: socket: no port given");
3739 return;
3740 }
a8fb5427
DB		 3741 } else {
3742 if (tls_creds) {
3743 error_setg(errp, "TLS can only be used over TCP socket");
3744 return;
3745 }
dafd325d
PM		 3746 }
3747
32bafa8f 3748 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3749 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3750
f194a1ae
EB		 3751 sock->has_nodelay = true;
3752 sock->nodelay = do_nodelay;
3753 sock->has_server = true;
3754 sock->server = is_listen;
3755 sock->has_telnet = true;
3756 sock->telnet = is_telnet;
3757 sock->has_wait = true;
3758 sock->wait = is_waitconnect;
3759 sock->has_reconnect = true;
3760 sock->reconnect = reconnect;
3761 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3762
3763 addr = g_new0(SocketAddress, 1);
3764 if (path) {
0399293e 3765 UnixSocketAddress *q_unix;
130257dc 3766 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3767 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3768 q_unix->path = g_strdup(path);
dafd325d 3769 } else {
130257dc 3770 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3771 addr->u.inet.data = g_new(InetSocketAddress, 1);
3772 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3773 .host = g_strdup(host),
3774 .port = g_strdup(port),
3775 .has_to = qemu_opt_get(opts, "to"),
3776 .to = qemu_opt_get_number(opts, "to", 0),
3777 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3778 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3779 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3780 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3781 };
dafd325d 3782 }
f194a1ae 3783 sock->addr = addr;
dafd325d
PM		 3784}
3785
90a14bfe
PM		 3786static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3787 Error **errp)
3788{
3789 const char *host = qemu_opt_get(opts, "host");
3790 const char *port = qemu_opt_get(opts, "port");
3791 const char *localaddr = qemu_opt_get(opts, "localaddr");
3792 const char *localport = qemu_opt_get(opts, "localport");
3793 bool has_local = false;
3794 SocketAddress *addr;
f194a1ae 3795 ChardevUdp *udp;
90a14bfe
PM		 3796
3797 if (host == NULL || strlen(host) == 0) {
3798 host = "localhost";
3799 }
3800 if (port == NULL || strlen(port) == 0) {
3801 error_setg(errp, "chardev: udp: remote port not specified");
3802 return;
3803 }
3804 if (localport == NULL || strlen(localport) == 0) {
3805 localport = "0";
3806 } else {
3807 has_local = true;
3808 }
3809 if (localaddr == NULL || strlen(localaddr) == 0) {
3810 localaddr = "";
3811 } else {
3812 has_local = true;
3813 }
3814
32bafa8f 3815 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 3816 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3817
3818 addr = g_new0(SocketAddress, 1);
130257dc 3819 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3820 addr->u.inet.data = g_new(InetSocketAddress, 1);
3821 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3822 .host = g_strdup(host),
3823 .port = g_strdup(port),
3824 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3825 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3826 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3827 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3828 };
f194a1ae 3829 udp->remote = addr;
90a14bfe
PM		 3830
3831 if (has_local) {
f194a1ae 3832 udp->has_local = true;
90a14bfe 3833 addr = g_new0(SocketAddress, 1);
130257dc 3834 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3835 addr->u.inet.data = g_new(InetSocketAddress, 1);
3836 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3837 .host = g_strdup(localaddr),
3838 .port = g_strdup(localport),
3839 };
f194a1ae 3840 udp->local = addr;
90a14bfe
PM		 3841 }
3842}
3843
d654f34e 3844typedef struct CharDriver {
191bc01b 3845 const char *name;
99aec012 3846 ChardevBackendKind kind;
2c5f4882 3847 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3848 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3849 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3850} CharDriver;
3851
3852static GSList *backends;
3853
e4d50d47 3854void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3855 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3856 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3857 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3858{
3859 CharDriver *s;
3860
3861 s = g_malloc0(sizeof(*s));
3862 s->name = g_strdup(name);
3863 s->kind = kind;
3864 s->parse = parse;
4ca17281 3865 s->create = create;
2c5f4882
GH		 3866
3867 backends = g_slist_append(backends, s);
3868}
3869
f69554b9 3870CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3871 void (*init)(struct CharDriverState *s),
3872 Error **errp)
191bc01b 3873{
0aff637e 3874 Error *local_err = NULL;
d654f34e 3875 CharDriver *cd;
191bc01b 3876 CharDriverState *chr;
d654f34e 3877 GSList *i;
a61ae7f8
PM		 3878 ChardevReturn *ret = NULL;
3879 ChardevBackend *backend;
3880 const char *id = qemu_opts_id(opts);
3881 char *bid = NULL;
191bc01b 3882
1bbd185f 3883 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3884 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3885 qemu_opts_id(opts));
2274ae9d 3886 goto err;
1bbd185f 3887 }
517b3d40
LM		 3888
3889 if (is_help_option(qemu_opt_get(opts, "backend"))) {
3890 fprintf(stderr, "Available chardev backend types:\n");
3891 for (i = backends; i; i = i->next) {
3892 cd = i->data;
3893 fprintf(stderr, "%s\n", cd->name);
3894 }
3895 exit(!is_help_option(qemu_opt_get(opts, "backend")));
3896 }
3897
3898 if (id == NULL) {
3899 error_setg(errp, "chardev: no id specified");
3900 goto err;
3901 }
3902
d654f34e
AL		 3903 for (i = backends; i; i = i->next) {
3904 cd = i->data;
3905
3906 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3907 break;
d654f34e 3908 }
191bc01b 3909 }
d654f34e 3910 if (i == NULL) {
312fd5f2 3911 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3912 qemu_opt_get(opts, "backend"));
e668287d 3913 goto err;
191bc01b
GH		 3914 }
3915
a61ae7f8 3916 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3917
a61ae7f8
PM		 3918 if (qemu_opt_get_bool(opts, "mux", 0)) {
3919 bid = g_strdup_printf("%s-base", id);
3920 }
2c5f4882 3921
a61ae7f8 3922 chr = NULL;
130257dc 3923 backend->type = cd->kind;
a61ae7f8
PM		 3924 if (cd->parse) {
3925 cd->parse(opts, backend, &local_err);
3926 if (local_err) {
3927 error_propagate(errp, local_err);
2c5f4882
GH		 3928 goto qapi_out;
3929 }
d0d7708b
DB		 3930 } else {
3931 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3932 qemu_chr_parse_common(opts, cc);
32bafa8f 3933 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 3934 }
d0d7708b 3935
a61ae7f8
PM		 3936 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3937 if (!ret) {
3938 goto qapi_out;
191bc01b
GH		 3939 }
3940
a61ae7f8
PM		 3941 if (bid) {
3942 qapi_free_ChardevBackend(backend);
3943 qapi_free_ChardevReturn(ret);
3944 backend = g_new0(ChardevBackend, 1);
32bafa8f 3945 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 3946 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 3947 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 3948 ret = qmp_chardev_add(id, backend, errp);
3949 if (!ret) {
3950 chr = qemu_chr_find(bid);
3951 qemu_chr_delete(chr);
3952 chr = NULL;
3953 goto qapi_out;
3954 }
bd5c51ee 3955 }
7591c5c1 3956
a61ae7f8 3957 chr = qemu_chr_find(id);
2274ae9d 3958 chr->opts = opts;
a61ae7f8
PM		 3959
3960qapi_out:
3961 qapi_free_ChardevBackend(backend);
3962 qapi_free_ChardevReturn(ret);
3963 g_free(bid);
191bc01b 3964 return chr;
2274ae9d
GH		 3965
3966err:
3967 qemu_opts_del(opts);
3968 return NULL;
191bc01b
GH		 3969}
3970
33577b47
PD		 3971CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3972 void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3973{
3974 const char *p;
3975 CharDriverState *chr;
191bc01b 3976 QemuOpts *opts;
bd2d80b2 3977 Error *err = NULL;
191bc01b 3978
c845f401
GH		 3979 if (strstart(filename, "chardev:", &p)) {
3980 return qemu_chr_find(p);
3981 }
3982
191bc01b 3983 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3984 if (!opts)
3985 return NULL;
6f97dba0 3986
bd2d80b2 3987 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3988 if (err) {
565f65d2 3989 error_report_err(err);
bd2d80b2 3990 }
7e1b35b4 3991 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3992 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3993 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3994 }
3995 return chr;
3996}
3997
33577b47
PD		 3998CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3999{
4000 CharDriverState *chr;
4001 chr = qemu_chr_new_noreplay(label, filename, init);
4002 if (chr) {
4003 chr->replay = replay_mode != REPLAY_MODE_NONE;
4004 if (chr->replay && chr->chr_ioctl) {
4005 fprintf(stderr,
4006 "Replay: ioctl is not supported for serial devices yet\n");
4007 }
4008 replay_register_char_driver(chr);
4009 }
4010 return chr;
4011}
4012
15f31519 4013void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 4014{
4015 if (chr->chr_set_echo) {
4016 chr->chr_set_echo(chr, echo);
4017 }
4018}
4019
8e25daa8 4020void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 4021{
8e25daa8 4022 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 4023 return;
4024 }
8e25daa8 4025 chr->fe_open = fe_open;
574b711a
HG		 4026 if (chr->chr_set_fe_open) {
4027 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4028 }
4029}
4030
d61b0c9a
MAL		 4031void qemu_chr_fe_event(struct CharDriverState *chr, int event)
4032{
4033 if (chr->chr_fe_event) {
4034 chr->chr_fe_event(chr, event);
4035 }
4036}
4037
6f1de6b7
PB		 4038guint qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
4039 GIOFunc func, void *user_data)
23673ca7
AL		 4040{
4041 GSource *src;
4042 guint tag;
4043
4044 if (s->chr_add_watch == NULL) {
6f1de6b7 4045 return 0;
23673ca7
AL		 4046 }
4047
4048 src = s->chr_add_watch(s, cond);
62c339c5 4049 if (!src) {
6f1de6b7 4050 return 0;
62c339c5
PB		 4051 }
4052
23673ca7
AL		 4053 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4054 tag = g_source_attach(src, NULL);
4055 g_source_unref(src);
4056
4057 return tag;
4058}
4059
44c473de
HG		 4060int qemu_chr_fe_claim(CharDriverState *s)
4061{
4062 if (s->avail_connections < 1) {
4063 return -1;
4064 }
4065 s->avail_connections--;
4066 return 0;
4067}
4068
4069void qemu_chr_fe_claim_no_fail(CharDriverState *s)
4070{
4071 if (qemu_chr_fe_claim(s) != 0) {
4072 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
4073 __func__, s->label);
4074 exit(1);
4075 }
4076}
4077
4078void qemu_chr_fe_release(CharDriverState *s)
4079{
4080 s->avail_connections++;
4081}
4082
7d9d17f7
TM		 4083void qemu_chr_disconnect(CharDriverState *chr)
4084{
4085 if (chr->chr_disconnect) {
4086 chr->chr_disconnect(chr);
4087 }
4088}
4089
d0d7708b 4090static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4091{
7267c094
AL		 4092 g_free(chr->filename);
4093 g_free(chr->label);
4ad60880 4094 qemu_opts_del(chr->opts);
d0d7708b
DB		 4095 if (chr->logfd != -1) {
4096 close(chr->logfd);
4097 }
fefd749c 4098 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4099 g_free(chr);
6f97dba0
AL		 4100}
4101
d0d7708b
DB		 4102void qemu_chr_free(CharDriverState *chr)
4103{
4104 if (chr->chr_close) {
4105 chr->chr_close(chr);
4106 }
4107 qemu_chr_free_common(chr);
4108}
4109
1ad78ea5
MAL		 4110void qemu_chr_delete(CharDriverState *chr)
4111{
4112 QTAILQ_REMOVE(&chardevs, chr, next);
4113 qemu_chr_free(chr);
4114}
4115
c5a415a0 4116ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4117{
c5a415a0 4118 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4119 CharDriverState *chr;
4120
72cf2d4f 4121 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4122 ChardevInfoList *info = g_malloc0(sizeof(*info));
4123 info->value = g_malloc0(sizeof(*info->value));
4124 info->value->label = g_strdup(chr->label);
4125 info->value->filename = g_strdup(chr->filename);
32a97ea1 4126 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4127
4128 info->next = chr_list;
4129 chr_list = info;
6f97dba0 4130 }
588b3832 4131
c5a415a0 4132 return chr_list;
6f97dba0 4133}
c845f401 4134
77d1c3c6
MK		 4135ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4136{
4137 ChardevBackendInfoList *backend_list = NULL;
4138 CharDriver *c = NULL;
4139 GSList *i = NULL;
4140
4141 for (i = backends; i; i = i->next) {
4142 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4143 c = i->data;
4144 info->value = g_malloc0(sizeof(*info->value));
4145 info->value->name = g_strdup(c->name);
4146
4147 info->next = backend_list;
4148 backend_list = info;
4149 }
4150
4151 return backend_list;
4152}
4153
c845f401
GH		 4154CharDriverState *qemu_chr_find(const char *name)
4155{
4156 CharDriverState *chr;
4157
72cf2d4f 4158 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4159 if (strcmp(chr->label, name) != 0)
4160 continue;
4161 return chr;
4162 }
4163 return NULL;
4164}
0beb4942 4165
4d454574
PB		 4166QemuOptsList qemu_chardev_opts = {
4167 .name = "chardev",
4168 .implied_opt_name = "backend",
4169 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4170 .desc = {
4171 {
4172 .name = "backend",
4173 .type = QEMU_OPT_STRING,
4174 },{
4175 .name = "path",
4176 .type = QEMU_OPT_STRING,
4177 },{
4178 .name = "host",
4179 .type = QEMU_OPT_STRING,
4180 },{
4181 .name = "port",
4182 .type = QEMU_OPT_STRING,
4183 },{
4184 .name = "localaddr",
4185 .type = QEMU_OPT_STRING,
4186 },{
4187 .name = "localport",
4188 .type = QEMU_OPT_STRING,
4189 },{
4190 .name = "to",
4191 .type = QEMU_OPT_NUMBER,
4192 },{
4193 .name = "ipv4",
4194 .type = QEMU_OPT_BOOL,
4195 },{
4196 .name = "ipv6",
4197 .type = QEMU_OPT_BOOL,
4198 },{
4199 .name = "wait",
4200 .type = QEMU_OPT_BOOL,
4201 },{
4202 .name = "server",
4203 .type = QEMU_OPT_BOOL,
4204 },{
4205 .name = "delay",
4206 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4207 },{
4208 .name = "reconnect",
4209 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4210 },{
4211 .name = "telnet",
4212 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4213 },{
4214 .name = "tls-creds",
4215 .type = QEMU_OPT_STRING,
4d454574
PB		 4216 },{
4217 .name = "width",
4218 .type = QEMU_OPT_NUMBER,
4219 },{
4220 .name = "height",
4221 .type = QEMU_OPT_NUMBER,
4222 },{
4223 .name = "cols",
4224 .type = QEMU_OPT_NUMBER,
4225 },{
4226 .name = "rows",
4227 .type = QEMU_OPT_NUMBER,
4228 },{
4229 .name = "mux",
4230 .type = QEMU_OPT_BOOL,
4231 },{
4232 .name = "signal",
4233 .type = QEMU_OPT_BOOL,
4234 },{
4235 .name = "name",
4236 .type = QEMU_OPT_STRING,
4237 },{
4238 .name = "debug",
4239 .type = QEMU_OPT_NUMBER,
51767e7c 4240 },{
3949e594 4241 .name = "size",
de1cc36e 4242 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4243 },{
4244 .name = "chardev",
4245 .type = QEMU_OPT_STRING,
31e38a22
OK		 4246 },{
4247 .name = "append",
4248 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4249 },{
4250 .name = "logfile",
4251 .type = QEMU_OPT_STRING,
4252 },{
4253 .name = "logappend",
4254 .type = QEMU_OPT_BOOL,
4d454574
PB		 4255 },
4256 { /* end of list */ }
4257 },
4258};
f1a1a356 4259
ffbdbe59
GH		 4260#ifdef _WIN32
4261
fd5b036c
PB		 4262static CharDriverState *qmp_chardev_open_file(const char *id,
4263 ChardevBackend *backend,
4264 ChardevReturn *ret,
4265 Error **errp)
ffbdbe59 4266{
32bafa8f 4267 ChardevFile *file = backend->u.file.data;
f194a1ae 4268 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59 4269 HANDLE out;
c025f689
SW		 4270 DWORD accessmode;
4271 DWORD flags;
ffbdbe59 4272
e859eda5 4273 if (file->has_in) {
ffbdbe59
GH		 4274 error_setg(errp, "input file not supported");
4275 return NULL;
4276 }
4277
c025f689
SW		 4278 if (file->has_append && file->append) {
4279 /* Append to file if it already exists. */
4280 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4281 flags = OPEN_ALWAYS;
4282 } else {
4283 /* Truncate file if it already exists. */
4284 accessmode = GENERIC_WRITE;
4285 flags = CREATE_ALWAYS;
4286 }
4287
4288 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4289 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4290 if (out == INVALID_HANDLE_VALUE) {
4291 error_setg(errp, "open %s failed", file->out);
4292 return NULL;
4293 }
d0d7708b 4294 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4295}
4296
6511d396
PB		 4297static CharDriverState *qmp_chardev_open_serial(const char *id,
4298 ChardevBackend *backend,
4299 ChardevReturn *ret,
d36b2b90 4300 Error **errp)
d59044ef 4301{
32bafa8f 4302 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4303 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4304 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4305}
4306
ffbdbe59
GH		 4307#else /* WIN32 */
4308
4309static int qmp_chardev_open_file_source(char *src, int flags,
4310 Error **errp)
4311{
4312 int fd = -1;
4313
4314 TFR(fd = qemu_open(src, flags, 0666));
4315 if (fd == -1) {
20c39760 4316 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4317 }
4318 return fd;
4319}
4320
fd5b036c
PB		 4321static CharDriverState *qmp_chardev_open_file(const char *id,
4322 ChardevBackend *backend,
4323 ChardevReturn *ret,
4324 Error **errp)
ffbdbe59 4325{
32bafa8f 4326 ChardevFile *file = backend->u.file.data;
f194a1ae 4327 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4328 int flags, in = -1, out;
ffbdbe59 4329
31e38a22
OK		 4330 flags = O_WRONLY | O_CREAT | O_BINARY;
4331 if (file->has_append && file->append) {
4332 flags |= O_APPEND;
4333 } else {
4334 flags |= O_TRUNC;
4335 }
4336
ffbdbe59 4337 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4338 if (out < 0) {
ffbdbe59
GH		 4339 return NULL;
4340 }
4341
e859eda5 4342 if (file->has_in) {
ffbdbe59
GH		 4343 flags = O_RDONLY;
4344 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4345 if (in < 0) {
ffbdbe59
GH		 4346 qemu_close(out);
4347 return NULL;
4348 }
4349 }
4350
d0d7708b 4351 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4352}
4353
d809ab95 4354#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4355static CharDriverState *qmp_chardev_open_serial(const char *id,
4356 ChardevBackend *backend,
4357 ChardevReturn *ret,
d36b2b90 4358 Error **errp)
d59044ef 4359{
32bafa8f 4360 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4361 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4362 int fd;
4363
4364 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4365 if (fd < 0) {
d36b2b90 4366 return NULL;
39099991 4367 }
f9e8cacc 4368 qemu_set_nonblock(fd);
d0d7708b 4369 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4370}
6511d396 4371#endif
d36b2b90 4372
d809ab95 4373#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4374static CharDriverState *qmp_chardev_open_parallel(const char *id,
4375 ChardevBackend *backend,
4376 ChardevReturn *ret,
d36b2b90
MA		 4377 Error **errp)
4378{
32bafa8f 4379 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4380 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4381 int fd;
4382
4383 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4384 if (fd < 0) {
d59044ef
GH		 4385 return NULL;
4386 }
d0d7708b 4387 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4388}
d809ab95 4389#endif
d59044ef 4390
ffbdbe59
GH		 4391#endif /* WIN32 */
4392
5dd1f02b
CM		 4393static gboolean socket_reconnect_timeout(gpointer opaque)
4394{
4395 CharDriverState *chr = opaque;
4396 TCPCharDriver *s = chr->opaque;
317856ca 4397 QIOChannelSocket *sioc;
5dd1f02b
CM		 4398
4399 s->reconnect_timer = 0;
4400
4401 if (chr->be_open) {
4402 return false;
4403 }
4404
317856ca
DB		 4405 sioc = qio_channel_socket_new();
4406 qio_channel_socket_connect_async(sioc, s->addr,
4407 qemu_chr_socket_connected,
4408 chr, NULL);
5dd1f02b
CM		 4409
4410 return false;
4411}
4412
dbba8d1b
PB		 4413static CharDriverState *qmp_chardev_open_socket(const char *id,
4414 ChardevBackend *backend,
4415 ChardevReturn *ret,
f6bd5d6e
GH		 4416 Error **errp)
4417{
43ded1a0
CM		 4418 CharDriverState *chr;
4419 TCPCharDriver *s;
32bafa8f 4420 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4421 SocketAddress *addr = sock->addr;
4422 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4423 bool is_listen = sock->has_server ? sock->server : true;
4424 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4425 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4426 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4427 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4428 QIOChannelSocket *sioc = NULL;
43ded1a0 4429
d0d7708b
DB		 4430 chr = qemu_chr_alloc(common, errp);
4431 if (!chr) {
4432 return NULL;
4433 }
2d528d45 4434 s = g_new0(TCPCharDriver, 1);
43ded1a0 4435
130257dc 4436 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4437 s->is_listen = is_listen;
4438 s->is_telnet = is_telnet;
43ded1a0 4439 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4440 if (sock->tls_creds) {
4441 Object *creds;
4442 creds = object_resolve_path_component(
4443 object_get_objects_root(), sock->tls_creds);
4444 if (!creds) {
4445 error_setg(errp, "No TLS credentials with id '%s'",
4446 sock->tls_creds);
4447 goto error;
4448 }
4449 s->tls_creds = (QCryptoTLSCreds *)
4450 object_dynamic_cast(creds,
4451 TYPE_QCRYPTO_TLS_CREDS);
4452 if (!s->tls_creds) {
4453 error_setg(errp, "Object with id '%s' is not TLS credentials",
4454 sock->tls_creds);
4455 goto error;
4456 }
4457 object_ref(OBJECT(s->tls_creds));
4458 if (is_listen) {
4459 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4460 error_setg(errp, "%s",
4461 "Expected TLS credentials for server endpoint");
4462 goto error;
4463 }
4464 } else {
4465 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4466 error_setg(errp, "%s",
4467 "Expected TLS credentials for client endpoint");
4468 goto error;
4469 }
4470 }
4471 }
4472
37f9e0a2 4473 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0
CM		 4474
4475 chr->opaque = s;
d7a04fd7 4476 chr->chr_wait_connected = tcp_chr_wait_connected;
43ded1a0
CM		 4477 chr->chr_write = tcp_chr_write;
4478 chr->chr_sync_read = tcp_chr_sync_read;
4479 chr->chr_close = tcp_chr_close;
7d9d17f7 4480 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4481 chr->get_msgfds = tcp_get_msgfds;
4482 chr->set_msgfds = tcp_set_msgfds;
4483 chr->chr_add_client = tcp_chr_add_client;
4484 chr->chr_add_watch = tcp_chr_add_watch;
4485 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4486 /* be isn't opened until we get a connection */
4487 chr->explicit_be_open = true;
4488
0ff0fad2
DB		 4489 chr->filename = SocketAddress_to_str("disconnected:",
4490 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4491
4492 if (is_listen) {
43ded1a0
CM		 4493 if (is_telnet) {
4494 s->do_telnetopt = 1;
4495 }
5dd1f02b
CM		 4496 } else if (reconnect > 0) {
4497 s->reconnect_time = reconnect;
f6bd5d6e 4498 }
43ded1a0 4499
5008e5b7 4500 if (s->reconnect_time) {
d7a04fd7 4501 sioc = qio_channel_socket_new();
317856ca
DB		 4502 qio_channel_socket_connect_async(sioc, s->addr,
4503 qemu_chr_socket_connected,
4504 chr, NULL);
08b758b4 4505 } else {
d7a04fd7
MAL		 4506 if (s->is_listen) {
4507 sioc = qio_channel_socket_new();
4508 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4509 goto error;
4510 }
4511 s->listen_ioc = sioc;
4512 if (is_waitconnect &&
4513 qemu_chr_wait_connected(chr, errp) < 0) {
4514 goto error;
4515 }
4516 if (!s->ioc) {
4517 s->listen_tag = qio_channel_add_watch(
4518 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4519 tcp_chr_accept, chr, NULL);
4520 }
4521 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4522 goto error;
4523 }
43ded1a0
CM		 4524 }
4525
4526 return chr;
a8fb5427
DB		 4527
4528 error:
08b758b4
DB		 4529 if (sioc) {
4530 object_unref(OBJECT(sioc));
4531 }
a8fb5427
DB		 4532 if (s->tls_creds) {
4533 object_unref(OBJECT(s->tls_creds));
4534 }
4535 g_free(s);
4536 qemu_chr_free_common(chr);
4537 return NULL;
f6bd5d6e
GH		 4538}
4539
e79b80da
PB		 4540static CharDriverState *qmp_chardev_open_udp(const char *id,
4541 ChardevBackend *backend,
4542 ChardevReturn *ret,
08d0ab3f 4543 Error **errp)
3ecc059d 4544{
32bafa8f 4545 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4546 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4547 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4548
9894dc0c 4549 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4550 udp->local, udp->remote,
9894dc0c
DB		 4551 errp) < 0) {
4552 object_unref(OBJECT(sioc));
3ecc059d
GH		 4553 return NULL;
4554 }
9894dc0c 4555 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4556}
4557
f1a1a356
GH		 4558ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4559 Error **errp)
4560{
4561 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4562 CharDriverState *chr = NULL;
eaeba653 4563 Error *local_err = NULL;
4ca17281
PB		 4564 GSList *i;
4565 CharDriver *cd;
f1a1a356
GH		 4566
4567 chr = qemu_chr_find(id);
4568 if (chr) {
4569 error_setg(errp, "Chardev '%s' already exists", id);
4570 g_free(ret);
4571 return NULL;
4572 }
4573
4ca17281
PB		 4574 for (i = backends; i; i = i->next) {
4575 cd = i->data;
4576
130257dc 4577 if (cd->kind == backend->type) {
4ca17281
PB		 4578 chr = cd->create(id, backend, ret, &local_err);
4579 if (local_err) {
4580 error_propagate(errp, local_err);
4581 goto out_error;
4582 }
4583 break;
4584 }
4585 }
4586
4587 if (chr == NULL) {
1c3af0f4
PB		 4588 assert(!i);
4589 error_setg(errp, "chardev backend not available");
4590 goto out_error;
eaeba653
PB		 4591 }
4592
4593 chr->label = g_strdup(id);
4594 chr->avail_connections =
130257dc 4595 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4596 if (!chr->filename) {
130257dc 4597 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4598 }
eaeba653
PB		 4599 if (!chr->explicit_be_open) {
4600 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4601 }
4602 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4603 return ret;
4604
4605out_error:
4606 g_free(ret);
4607 return NULL;
f1a1a356
GH		 4608}
4609
4610void qmp_chardev_remove(const char *id, Error **errp)
4611{
4612 CharDriverState *chr;
4613
4614 chr = qemu_chr_find(id);
8108fd3e 4615 if (chr == NULL) {
f1a1a356
GH		 4616 error_setg(errp, "Chardev '%s' not found", id);
4617 return;
4618 }
4619 if (chr->chr_can_read || chr->chr_read ||
4620 chr->chr_event || chr->handler_opaque) {
4621 error_setg(errp, "Chardev '%s' is busy", id);
4622 return;
4623 }
33577b47
PD		 4624 if (chr->replay) {
4625 error_setg(errp,
4626 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4627 return;
4628 }
f1a1a356
GH		 4629 qemu_chr_delete(chr);
4630}
d654f34e 4631
aa5cb7f5 4632void qemu_chr_cleanup(void)
c1111a24
MAL		 4633{
4634 CharDriverState *chr, *tmp;
4635
4636 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4637 qemu_chr_delete(chr);
4638 }
4639}
4640
d654f34e
AL		 4641static void register_types(void)
4642{
4ca17281 4643 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4644 qemu_chr_open_null);
e4d50d47 4645 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4646 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4647 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4648 qmp_chardev_open_udp);
e4d50d47 4649 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4650 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4651 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4652 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4653 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4654 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4655#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4656 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4657 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4658 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4659 qemu_chr_parse_serial, qmp_chardev_open_serial);
4660#endif
38bfb1a6 4661#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4662 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4663 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4664 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4665 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4666#endif
c2e75a43 4667#ifdef HAVE_CHARDEV_PTY
4ca17281 4668 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4669 qemu_chr_open_pty);
4670#endif
122e5ed4 4671#ifdef _WIN32
4ca17281 4672 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4673 qemu_chr_open_win_con);
4674#endif
e4d50d47 4675 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4676 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4677 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4678 qemu_chr_open_mux);
c11ed966 4679 /* Bug-compatibility: */
e4d50d47 4680 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4681 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4682 /* this must be done after machine init, since we register FEs with muxes
4683 * as part of realize functions like serial_isa_realizefn when -nographic
4684 * is specified
4685 */
4686 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4687}
4688
4689type_init(register_types);
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