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char: remove chr_free
[mirror_qemu.git] / qemu-char.c
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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
0ec7b3e7 92typedef struct MuxChardev MuxChardev;
6dfa8298 93
cfb429cb
CM		 94/***********************************************************/
95/* Socket address helpers */
cfb429cb 96
0ff0fad2
DB		 97static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
98 bool is_listen, bool is_telnet)
16cc4ffe 99{
130257dc 100 switch (addr->type) {
16cc4ffe 101 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 102 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 103 is_telnet ? "telnet" : "tcp",
104 addr->u.inet.data->host,
105 addr->u.inet.data->port,
106 is_listen ? ",server" : "");
16cc4ffe
CM		 107 break;
108 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 109 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 110 addr->u.q_unix.data->path,
0ff0fad2 111 is_listen ? ",server" : "");
16cc4ffe
CM		 112 break;
113 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 114 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 115 is_listen ? ",server" : "");
16cc4ffe
CM		 116 break;
117 default:
118 abort();
119 }
120}
121
0ff0fad2
DB		 122static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
123 struct sockaddr_storage *ps, socklen_t ps_len,
124 bool is_listen, bool is_telnet)
16cc4ffe 125{
01ca519f
CM		 126 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
127 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 128 const char *left = "", *right = "";
129
130 switch (ss->ss_family) {
131#ifndef _WIN32
132 case AF_UNIX:
0ff0fad2
DB		 133 return g_strdup_printf("unix:%s%s",
134 ((struct sockaddr_un *)(ss))->sun_path,
135 is_listen ? ",server" : "");
16cc4ffe
CM		 136#endif
137 case AF_INET6:
138 left = "[";
139 right = "]";
140 /* fall through */
141 case AF_INET:
01ca519f
CM		 142 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
143 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
144 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
145 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 146 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
147 is_telnet ? "telnet" : "tcp",
148 left, shost, right, sserv,
149 is_listen ? ",server" : "",
150 left, phost, right, pserv);
16cc4ffe
CM		 151
152 default:
0ff0fad2 153 return g_strdup_printf("unknown");
16cc4ffe
CM		 154 }
155}
156
6f97dba0
AL		 157/***********************************************************/
158/* character device */
159
0ec7b3e7 160static QTAILQ_HEAD(ChardevHead, Chardev) chardevs =
72cf2d4f 161 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 162
0ec7b3e7 163void qemu_chr_be_event(Chardev *s, int event)
6f97dba0 164{
a4afa548
MAL		 165 CharBackend *be = s->be;
166
73cdf3f2
AG		 167 /* Keep track if the char device is open */
168 switch (event) {
169 case CHR_EVENT_OPENED:
16665b94 170 s->be_open = 1;
73cdf3f2
AG		 171 break;
172 case CHR_EVENT_CLOSED:
16665b94 173 s->be_open = 0;
73cdf3f2
AG		 174 break;
175 }
176
a4afa548 177 if (!be || !be->chr_event) {
6f97dba0 178 return;
a4afa548
MAL		 179 }
180
181 be->chr_event(be->opaque, event);
6f97dba0
AL		 182}
183
0ec7b3e7 184void qemu_chr_be_generic_open(Chardev *s)
6f97dba0 185{
bd5c51ee 186 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 187}
188
d0d7708b
DB		 189
190/* Not reporting errors from writing to logfile, as logs are
191 * defined to be "best effort" only */
0ec7b3e7 192static void qemu_chr_fe_write_log(Chardev *s,
d0d7708b
DB		 193 const uint8_t *buf, size_t len)
194{
195 size_t done = 0;
196 ssize_t ret;
197
198 if (s->logfd < 0) {
199 return;
200 }
201
202 while (done < len) {
53628efb
DB		 203 retry:
204 ret = write(s->logfd, buf + done, len - done);
205 if (ret == -1 && errno == EAGAIN) {
206 g_usleep(100);
207 goto retry;
208 }
d0d7708b
DB		 209
210 if (ret <= 0) {
211 return;
212 }
213 done += ret;
214 }
215}
216
0ec7b3e7
MAL		 217static int qemu_chr_fe_write_buffer(Chardev *s,
218 const uint8_t *buf, int len, int *offset)
33577b47 219{
777357d7 220 ChardevClass *cc = CHARDEV_GET_CLASS(s);
33577b47
PD		 221 int res = 0;
222 *offset = 0;
223
224 qemu_mutex_lock(&s->chr_write_lock);
225 while (*offset < len) {
53628efb 226 retry:
777357d7 227 res = cc->chr_write(s, buf + *offset, len - *offset);
53628efb
DB		 228 if (res < 0 && errno == EAGAIN) {
229 g_usleep(100);
230 goto retry;
231 }
33577b47
PD		 232
233 if (res <= 0) {
234 break;
235 }
236
237 *offset += res;
238 }
239 if (*offset > 0) {
240 qemu_chr_fe_write_log(s, buf, *offset);
241 }
242 qemu_mutex_unlock(&s->chr_write_lock);
243
244 return res;
245}
246
0ec7b3e7 247static bool qemu_chr_replay(Chardev *chr)
5ebd6703
MAL		 248{
249 return qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_REPLAY);
250}
251
5345fdb4 252int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len)
6f97dba0 253{
0ec7b3e7 254 Chardev *s = be->chr;
777357d7 255 ChardevClass *cc;
9005b2a7
PB		 256 int ret;
257
fa394ed6
MAL		 258 if (!s) {
259 return 0;
260 }
261
5ebd6703 262 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) {
33577b47
PD		 263 int offset;
264 replay_char_write_event_load(&ret, &offset);
265 assert(offset <= len);
266 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
267 return ret;
268 }
269
777357d7 270 cc = CHARDEV_GET_CLASS(s);
9005b2a7 271 qemu_mutex_lock(&s->chr_write_lock);
777357d7 272 ret = cc->chr_write(s, buf, len);
d0d7708b
DB		 273
274 if (ret > 0) {
275 qemu_chr_fe_write_log(s, buf, ret);
276 }
277
9005b2a7 278 qemu_mutex_unlock(&s->chr_write_lock);
33577b47 279
5ebd6703 280 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) {
33577b47
PD		 281 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
282 }
283
9005b2a7 284 return ret;
6f97dba0
AL		 285}
286
0ec7b3e7 287static int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len)
cd18720a 288{
33577b47
PD		 289 int offset;
290 int res;
cd18720a 291
5ebd6703 292 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) {
33577b47
PD		 293 replay_char_write_event_load(&res, &offset);
294 assert(offset <= len);
295 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
296 return res;
297 }
cd18720a 298
33577b47 299 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 300
5ebd6703 301 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) {
33577b47 302 replay_char_write_event_save(res, offset);
cd18720a
AL		 303 }
304
9005b2a7
PB		 305 if (res < 0) {
306 return res;
307 }
cd18720a
AL		 308 return offset;
309}
310
5345fdb4 311int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len)
7b0bfdf5 312{
0ec7b3e7 313 Chardev *s = be->chr;
5345fdb4 314
fa394ed6
MAL		 315 if (!s) {
316 return 0;
317 }
318
5345fdb4
MAL		 319 return qemu_chr_write_all(s, buf, len);
320}
321
322int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len)
323{
0ec7b3e7 324 Chardev *s = be->chr;
7b0bfdf5
NN		 325 int offset = 0, counter = 10;
326 int res;
327
777357d7 328 if (!s || !CHARDEV_GET_CLASS(s)->chr_sync_read) {
7b0bfdf5
NN		 329 return 0;
330 }
fa394ed6 331
5ebd6703 332 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) {
33577b47
PD		 333 return replay_char_read_all_load(buf);
334 }
7b0bfdf5
NN		 335
336 while (offset < len) {
53628efb 337 retry:
777357d7
MAL		 338 res = CHARDEV_GET_CLASS(s)->chr_sync_read(s, buf + offset,
339 len - offset);
53628efb
DB		 340 if (res == -1 && errno == EAGAIN) {
341 g_usleep(100);
342 goto retry;
343 }
7b0bfdf5
NN		 344
345 if (res == 0) {
346 break;
347 }
348
349 if (res < 0) {
5ebd6703 350 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) {
33577b47
PD		 351 replay_char_read_all_save_error(res);
352 }
7b0bfdf5
NN		 353 return res;
354 }
355
356 offset += res;
357
358 if (!counter--) {
359 break;
360 }
361 }
362
5ebd6703 363 if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) {
33577b47
PD		 364 replay_char_read_all_save_buf(buf, offset);
365 }
7b0bfdf5
NN		 366 return offset;
367}
368
5345fdb4 369int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg)
6f97dba0 370{
0ec7b3e7 371 Chardev *s = be->chr;
33577b47 372 int res;
fa394ed6 373
777357d7 374 if (!s || !CHARDEV_GET_CLASS(s)->chr_ioctl || qemu_chr_replay(s)) {
33577b47
PD		 375 res = -ENOTSUP;
376 } else {
777357d7 377 res = CHARDEV_GET_CLASS(s)->chr_ioctl(s, cmd, arg);
33577b47
PD		 378 }
379
380 return res;
6f97dba0
AL		 381}
382
0ec7b3e7 383int qemu_chr_be_can_write(Chardev *s)
6f97dba0 384{
a4afa548
MAL		 385 CharBackend *be = s->be;
386
387 if (!be || !be->chr_can_read) {
6f97dba0 388 return 0;
a4afa548
MAL		 389 }
390
391 return be->chr_can_read(be->opaque);
6f97dba0
AL		 392}
393
0ec7b3e7 394void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len)
6f97dba0 395{
a4afa548
MAL		 396 CharBackend *be = s->be;
397
398 if (be && be->chr_read) {
399 be->chr_read(be->opaque, buf, len);
ac310734 400 }
6f97dba0
AL		 401}
402
0ec7b3e7 403void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len)
33577b47 404{
5ebd6703 405 if (qemu_chr_replay(s)) {
33577b47
PD		 406 if (replay_mode == REPLAY_MODE_PLAY) {
407 return;
408 }
409 replay_chr_be_write(s, buf, len);
410 } else {
411 qemu_chr_be_write_impl(s, buf, len);
412 }
413}
414
5345fdb4 415int qemu_chr_fe_get_msgfd(CharBackend *be)
7d174059 416{
0ec7b3e7 417 Chardev *s = be->chr;
c76bf6bb 418 int fd;
5345fdb4 419 int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1;
5ebd6703 420 if (s && qemu_chr_replay(s)) {
776a32a0
MAL		 421 error_report("Replay: get msgfd is not supported "
422 "for serial devices yet");
33577b47
PD		 423 exit(1);
424 }
425 return res;
c76bf6bb
NN		 426}
427
5345fdb4 428int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len)
c76bf6bb 429{
0ec7b3e7 430 Chardev *s = be->chr;
5345fdb4 431
fa394ed6
MAL		 432 if (!s) {
433 return -1;
434 }
435
777357d7
MAL		 436 return CHARDEV_GET_CLASS(s)->get_msgfds ?
437 CHARDEV_GET_CLASS(s)->get_msgfds(s, fds, len) : -1;
7d174059
MM		 438}
439
5345fdb4 440int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num)
d39aac7a 441{
0ec7b3e7 442 Chardev *s = be->chr;
5345fdb4 443
fa394ed6
MAL		 444 if (!s) {
445 return -1;
446 }
447
777357d7
MAL		 448 return CHARDEV_GET_CLASS(s)->set_msgfds ?
449 CHARDEV_GET_CLASS(s)->set_msgfds(s, fds, num) : -1;
d39aac7a
NN		 450}
451
0ec7b3e7 452int qemu_chr_add_client(Chardev *s, int fd)
13661089 453{
777357d7
MAL		 454 return CHARDEV_GET_CLASS(s)->chr_add_client ?
455 CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1;
13661089
DB		 456}
457
5345fdb4 458void qemu_chr_fe_accept_input(CharBackend *be)
6f97dba0 459{
0ec7b3e7 460 Chardev *s = be->chr;
5345fdb4 461
fa394ed6
MAL		 462 if (!s) {
463 return;
464 }
465
777357d7
MAL		 466 if (CHARDEV_GET_CLASS(s)->chr_accept_input) {
467 CHARDEV_GET_CLASS(s)->chr_accept_input(s);
b68e956a 468 }
98c8ee1d 469 qemu_notify_event();
6f97dba0
AL		 470}
471
5345fdb4 472void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
6f97dba0 473{
9bd7854e 474 char buf[READ_BUF_LEN];
6f97dba0
AL		 475 va_list ap;
476 va_start(ap, fmt);
477 vsnprintf(buf, sizeof(buf), fmt, ap);
90f998f5
DB		 478 /* XXX this blocks entire thread. Rewrite to use
479 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 480 qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 481 va_end(ap);
482}
483
0ec7b3e7
MAL		 484static void remove_fd_in_watch(Chardev *chr);
485static void mux_chr_set_handlers(Chardev *chr, GMainContext *context);
486static void mux_set_focus(Chardev *chr, int focus);
6dfa8298 487
777357d7
MAL		 488static void qemu_char_open(Chardev *chr, ChardevBackend *backend,
489 bool *be_opened, Error **errp)
6f97dba0 490{
777357d7
MAL		 491 ChardevClass *cc = CHARDEV_GET_CLASS(chr);
492 /* Any ChardevCommon member would work */
493 ChardevCommon *common = backend ? backend->u.null.data : NULL;
494
495 if (common && common->has_logfile) {
496 int flags = O_WRONLY | O_CREAT;
497 if (common->has_logappend &&
498 common->logappend) {
499 flags |= O_APPEND;
500 } else {
501 flags |= O_TRUNC;
502 }
503 chr->logfd = qemu_open(common->logfile, flags, 0666);
504 if (chr->logfd < 0) {
505 error_setg_errno(errp, errno,
506 "Unable to open logfile %s",
507 common->logfile);
508 return;
509 }
510 }
511
512 if (cc->open) {
513 cc->open(chr, backend, be_opened, errp);
514 }
6f97dba0
AL		 515}
516
777357d7 517static void char_init(Object *obj)
6f97dba0 518{
777357d7 519 Chardev *chr = CHARDEV(obj);
6f97dba0 520
777357d7
MAL		 521 chr->logfd = -1;
522 qemu_mutex_init(&chr->chr_write_lock);
523}
524
525static void char_finalize(Object *obj)
526{
527 Chardev *chr = CHARDEV(obj);
528
529 if (chr->be) {
530 chr->be->chr = NULL;
531 }
532 g_free(chr->filename);
533 g_free(chr->label);
534 if (chr->logfd != -1) {
535 close(chr->logfd);
d0d7708b 536 }
777357d7
MAL		 537 qemu_mutex_destroy(&chr->chr_write_lock);
538}
539
540static const TypeInfo char_type_info = {
541 .name = TYPE_CHARDEV,
542 .parent = TYPE_OBJECT,
543 .instance_size = sizeof(Chardev),
544 .instance_init = char_init,
545 .instance_finalize = char_finalize,
546 .abstract = true,
547 .class_size = sizeof(ChardevClass),
548};
549
550static int null_chr_write(Chardev *chr, const uint8_t *buf, int len)
551{
552 return len;
553}
554
555static void null_chr_open(Chardev *chr,
556 ChardevBackend *backend,
557 bool *be_opened,
558 Error **errp)
559{
82878dac 560 *be_opened = false;
6f97dba0
AL		 561}
562
b68e956a
MAL		 563static const CharDriver null_driver = {
564 .kind = CHARDEV_BACKEND_KIND_NULL,
777357d7
MAL		 565};
566
567static void char_null_class_init(ObjectClass *oc, void *data)
568{
569 ChardevClass *cc = CHARDEV_CLASS(oc);
570
571 cc->open = null_chr_open;
572 cc->chr_write = null_chr_write;
573}
574
575static const TypeInfo char_null_type_info = {
576 .name = TYPE_CHARDEV_NULL,
577 .parent = TYPE_CHARDEV,
578 .instance_size = sizeof(Chardev),
579 .class_init = char_null_class_init,
b68e956a
MAL		 580};
581
6f97dba0 582/* MUX driver for serial I/O splitting */
6f97dba0
AL		 583#define MAX_MUX 4
584#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
585#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
0ec7b3e7
MAL		 586struct MuxChardev {
587 Chardev parent;
a4afa548 588 CharBackend *backends[MAX_MUX];
ecb672d1 589 CharBackend chr;
799f1f23 590 int focus;
6f97dba0
AL		 591 int mux_cnt;
592 int term_got_escape;
593 int max_size;
a80bf99f
AL		 594 /* Intermediate input buffer allows to catch escape sequences even if the
595 currently active device is not accepting any input - but only until it
596 is full as well. */
597 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
598 int prod[MAX_MUX];
599 int cons[MAX_MUX];
2d22959d 600 int timestamps;
9005b2a7 601
0ec7b3e7 602 /* Protected by the Chardev chr_write_lock. */
4ab312f7 603 int linestart;
2d22959d 604 int64_t timestamps_start;
6dfa8298 605};
6f97dba0 606
777357d7
MAL		 607#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
608
9005b2a7 609/* Called with chr_write_lock held. */
0ec7b3e7 610static int mux_chr_write(Chardev *chr, const uint8_t *buf, int len)
6f97dba0 611{
777357d7 612 MuxChardev *d = MUX_CHARDEV(chr);
6f97dba0 613 int ret;
2d22959d 614 if (!d->timestamps) {
5345fdb4 615 ret = qemu_chr_fe_write(&d->chr, buf, len);
6f97dba0
AL		 616 } else {
617 int i;
618
619 ret = 0;
4ab312f7
JK		 620 for (i = 0; i < len; i++) {
621 if (d->linestart) {
6f97dba0
AL		 622 char buf1[64];
623 int64_t ti;
624 int secs;
625
bc72ad67 626 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 627 if (d->timestamps_start == -1)
628 d->timestamps_start = ti;
629 ti -= d->timestamps_start;
a4bb1db8 630 secs = ti / 1000;
6f97dba0
AL		 631 snprintf(buf1, sizeof(buf1),
632 "[%02d:%02d:%02d.%03d] ",
633 secs / 3600,
634 (secs / 60) % 60,
635 secs % 60,
a4bb1db8 636 (int)(ti % 1000));
90f998f5
DB		 637 /* XXX this blocks entire thread. Rewrite to use
638 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4
MAL		 639 qemu_chr_fe_write_all(&d->chr,
640 (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 641 d->linestart = 0;
642 }
5345fdb4 643 ret += qemu_chr_fe_write(&d->chr, buf + i, 1);
4ab312f7
JK		 644 if (buf[i] == '\n') {
645 d->linestart = 1;
6f97dba0
AL		 646 }
647 }
648 }
649 return ret;
650}
651
652static const char * const mux_help[] = {
653 "% h print this help\n\r",
654 "% x exit emulator\n\r",
655 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 656 "% t toggle console timestamps\n\r",
6f97dba0
AL		 657 "% b send break (magic sysrq)\n\r",
658 "% c switch between console and monitor\n\r",
659 "% % sends %\n\r",
660 NULL
661};
662
663int term_escape_char = 0x01; /* ctrl-a is used for escape */
0ec7b3e7 664static void mux_print_help(Chardev *chr)
6f97dba0
AL		 665{
666 int i, j;
667 char ebuf[15] = "Escape-Char";
668 char cbuf[50] = "\n\r";
669
670 if (term_escape_char > 0 && term_escape_char < 26) {
671 snprintf(cbuf, sizeof(cbuf), "\n\r");
672 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
673 } else {
674 snprintf(cbuf, sizeof(cbuf),
675 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
676 term_escape_char);
677 }
90f998f5
DB		 678 /* XXX this blocks entire thread. Rewrite to use
679 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 680 qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 681 for (i = 0; mux_help[i] != NULL; i++) {
682 for (j=0; mux_help[i][j] != '\0'; j++) {
683 if (mux_help[i][j] == '%')
5345fdb4 684 qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 685 else
5345fdb4 686 qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 687 }
688 }
689}
690
0ec7b3e7 691static void mux_chr_send_event(MuxChardev *d, int mux_nr, int event)
2724b180 692{
a4afa548
MAL		 693 CharBackend *be = d->backends[mux_nr];
694
695 if (be && be->chr_event) {
696 be->chr_event(be->opaque, event);
697 }
2724b180
AL		 698}
699
0ec7b3e7 700static int mux_proc_byte(Chardev *chr, MuxChardev *d, int ch)
6f97dba0
AL		 701{
702 if (d->term_got_escape) {
703 d->term_got_escape = 0;
704 if (ch == term_escape_char)
705 goto send_char;
706 switch(ch) {
707 case '?':
708 case 'h':
709 mux_print_help(chr);
710 break;
711 case 'x':
712 {
713 const char *term = "QEMU: Terminated\n\r";
5345fdb4 714 qemu_chr_write_all(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 715 exit(0);
716 break;
717 }
718 case 's':
da31d594 719 blk_commit_all();
6f97dba0
AL		 720 break;
721 case 'b':
a425d23f 722 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 723 break;
724 case 'c':
6dfa8298 725 assert(d->mux_cnt > 0); /* handler registered with first fe */
6f97dba0 726 /* Switch to the next registered device */
fb5e19d2 727 mux_set_focus(chr, (d->focus + 1) % d->mux_cnt);
6f97dba0 728 break;
2d22959d
JK		 729 case 't':
730 d->timestamps = !d->timestamps;
731 d->timestamps_start = -1;
4ab312f7 732 d->linestart = 0;
2d22959d 733 break;
6f97dba0
AL		 734 }
735 } else if (ch == term_escape_char) {
736 d->term_got_escape = 1;
737 } else {
738 send_char:
739 return 1;
740 }
741 return 0;
742}
743
0ec7b3e7 744static void mux_chr_accept_input(Chardev *chr)
6f97dba0 745{
777357d7 746 MuxChardev *d = MUX_CHARDEV(chr);
799f1f23 747 int m = d->focus;
a4afa548 748 CharBackend *be = d->backends[m];
6f97dba0 749
a4afa548
MAL		 750 while (be && d->prod[m] != d->cons[m] &&
751 be->chr_can_read && be->chr_can_read(be->opaque)) {
752 be->chr_read(be->opaque,
753 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 754 }
755}
756
757static int mux_chr_can_read(void *opaque)
758{
777357d7 759 MuxChardev *d = MUX_CHARDEV(opaque);
799f1f23 760 int m = d->focus;
a4afa548 761 CharBackend *be = d->backends[m];
6f97dba0 762
a4afa548 763 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) {
6f97dba0 764 return 1;
a4afa548
MAL		 765 }
766
767 if (be && be->chr_can_read) {
768 return be->chr_can_read(be->opaque);
769 }
770
6f97dba0
AL		 771 return 0;
772}
773
774static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
775{
777357d7
MAL		 776 Chardev *chr = CHARDEV(opaque);
777 MuxChardev *d = MUX_CHARDEV(opaque);
799f1f23 778 int m = d->focus;
a4afa548 779 CharBackend *be = d->backends[m];
6f97dba0
AL		 780 int i;
781
a4afa548 782 mux_chr_accept_input(opaque);
6f97dba0 783
a4afa548 784 for (i = 0; i < size; i++)
6f97dba0 785 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 786 if (d->prod[m] == d->cons[m] &&
a4afa548
MAL		 787 be && be->chr_can_read &&
788 be->chr_can_read(be->opaque))
789 be->chr_read(be->opaque, &buf[i], 1);
6f97dba0 790 else
a80bf99f 791 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 792 }
793}
794
fffbd9cf
PB		 795static bool muxes_realized;
796
6f97dba0
AL		 797static void mux_chr_event(void *opaque, int event)
798{
777357d7 799 MuxChardev *d = MUX_CHARDEV(opaque);
6f97dba0
AL		 800 int i;
801
fffbd9cf
PB		 802 if (!muxes_realized) {
803 return;
804 }
805
6f97dba0
AL		 806 /* Send the event to all registered listeners */
807 for (i = 0; i < d->mux_cnt; i++)
2724b180 808 mux_chr_send_event(d, i, event);
6f97dba0
AL		 809}
810
7b7ab18d
MR		 811/**
812 * Called after processing of default and command-line-specified
813 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
814 * to a mux chardev. This is done here to ensure that
815 * output/prompts/banners are only displayed for the FE that has
816 * focus when initial command-line processing/machine init is
817 * completed.
818 *
819 * After this point, any new FE attached to any new or existing
820 * mux will receive CHR_EVENT_OPENED notifications for the BE
821 * immediately.
822 */
823static void muxes_realize_done(Notifier *notifier, void *unused)
824{
0ec7b3e7 825 Chardev *chr;
7b7ab18d
MR		 826
827 QTAILQ_FOREACH(chr, &chardevs, next) {
777357d7
MAL		 828 if (CHARDEV_IS_MUX(chr)) {
829 MuxChardev *d = MUX_CHARDEV(chr);
7b7ab18d
MR		 830 int i;
831
832 /* send OPENED to all already-attached FEs */
833 for (i = 0; i < d->mux_cnt; i++) {
834 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
835 }
836 /* mark mux as OPENED so any new FEs will immediately receive
837 * OPENED event
838 */
839 qemu_chr_be_generic_open(chr);
840 }
841 }
842 muxes_realized = true;
843}
844
845static Notifier muxes_realize_notify = {
846 .notify = muxes_realize_done,
847};
848
0ec7b3e7 849static GSource *mux_chr_add_watch(Chardev *s, GIOCondition cond)
3f0838ab 850{
777357d7 851 MuxChardev *d = MUX_CHARDEV(s);
0ec7b3e7 852 Chardev *chr = qemu_chr_fe_get_driver(&d->chr);
777357d7 853 ChardevClass *cc = CHARDEV_GET_CLASS(chr);
5345fdb4 854
777357d7 855 if (!cc->chr_add_watch) {
b68e956a
MAL		 856 return NULL;
857 }
858
777357d7 859 return cc->chr_add_watch(chr, cond);
3f0838ab
KB		 860}
861
980d0414 862static void char_mux_finalize(Object *obj)
1371a369 863{
980d0414 864 MuxChardev *d = MUX_CHARDEV(obj);
a4afa548 865 int i;
1371a369 866
a4afa548
MAL		 867 for (i = 0; i < d->mux_cnt; i++) {
868 CharBackend *be = d->backends[i];
869 if (be) {
870 be->chr = NULL;
871 }
872 }
c39860e6 873 qemu_chr_fe_deinit(&d->chr);
1371a369
MAL		 874}
875
0ec7b3e7 876static void mux_chr_set_handlers(Chardev *chr, GMainContext *context)
6dfa8298 877{
777357d7 878 MuxChardev *d = MUX_CHARDEV(chr);
6dfa8298
MAL		 879
880 /* Fix up the real driver with mux routines */
ecb672d1
MAL		 881 qemu_chr_fe_set_handlers(&d->chr,
882 mux_chr_can_read,
883 mux_chr_read,
884 mux_chr_event,
885 chr,
39ab61c6 886 context, true);
6dfa8298
MAL		 887}
888
0ec7b3e7 889static void mux_set_focus(Chardev *chr, int focus)
6dfa8298 890{
777357d7 891 MuxChardev *d = MUX_CHARDEV(chr);
fb5e19d2 892
6dfa8298
MAL		 893 assert(focus >= 0);
894 assert(focus < d->mux_cnt);
895
896 if (d->focus != -1) {
897 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
898 }
899
900 d->focus = focus;
fb5e19d2 901 chr->be = d->backends[focus];
6dfa8298
MAL		 902 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
903}
904
777357d7
MAL		 905static void qemu_chr_open_mux(Chardev *chr,
906 ChardevBackend *backend,
907 bool *be_opened,
908 Error **errp)
6f97dba0 909{
32bafa8f 910 ChardevMux *mux = backend->u.mux.data;
777357d7
MAL		 911 Chardev *drv;
912 MuxChardev *d = MUX_CHARDEV(chr);
6f97dba0 913
3c0e5a4a
PB		 914 drv = qemu_chr_find(mux->chardev);
915 if (drv == NULL) {
916 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
777357d7 917 return;
3c0e5a4a
PB		 918 }
919
799f1f23 920 d->focus = -1;
7b7ab18d
MR		 921 /* only default to opened state if we've realized the initial
922 * set of muxes
923 */
82878dac 924 *be_opened = muxes_realized;
777357d7 925 qemu_chr_fe_init(&d->chr, drv, errp);
6f97dba0
AL		 926}
927
0ec7b3e7 928Chardev *qemu_chr_fe_get_driver(CharBackend *be)
94a40fc5
MAL		 929{
930 return be->chr;
931}
932
0ec7b3e7 933bool qemu_chr_fe_init(CharBackend *b, Chardev *s, Error **errp)
94a40fc5
MAL		 934{
935 int tag = 0;
936
777357d7
MAL		 937 if (CHARDEV_IS_MUX(s)) {
938 MuxChardev *d = MUX_CHARDEV(s);
3aef23d7
MAL		 939
940 if (d->mux_cnt >= MAX_MUX) {
941 goto unavailable;
94a40fc5 942 }
3aef23d7
MAL		 943
944 d->backends[d->mux_cnt] = b;
945 tag = d->mux_cnt++;
946 } else if (s->be) {
947 goto unavailable;
a4afa548
MAL		 948 } else {
949 s->be = b;
94a40fc5
MAL		 950 }
951
830896af 952 b->fe_open = false;
94a40fc5
MAL		 953 b->tag = tag;
954 b->chr = s;
94a40fc5 955 return true;
3aef23d7
MAL		 956
957unavailable:
958 error_setg(errp, QERR_DEVICE_IN_USE, s->label);
959 return false;
94a40fc5
MAL		 960}
961
0ec7b3e7 962static bool qemu_chr_is_busy(Chardev *s)
a4afa548 963{
777357d7
MAL		 964 if (CHARDEV_IS_MUX(s)) {
965 MuxChardev *d = MUX_CHARDEV(s);
a4afa548
MAL		 966 return d->mux_cnt >= 0;
967 } else {
968 return s->be != NULL;
969 }
970}
971
c39860e6
MAL		 972void qemu_chr_fe_deinit(CharBackend *b)
973{
974 assert(b);
975
976 if (b->chr) {
39ab61c6 977 qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true);
fb5e19d2
MAL		 978 if (b->chr->be == b) {
979 b->chr->be = NULL;
980 }
777357d7
MAL		 981 if (CHARDEV_IS_MUX(b->chr)) {
982 MuxChardev *d = MUX_CHARDEV(b->chr);
a4afa548
MAL		 983 d->backends[b->tag] = NULL;
984 }
c39860e6
MAL		 985 b->chr = NULL;
986 }
987}
988
94a40fc5
MAL		 989void qemu_chr_fe_set_handlers(CharBackend *b,
990 IOCanReadHandler *fd_can_read,
991 IOReadHandler *fd_read,
992 IOEventHandler *fd_event,
993 void *opaque,
39ab61c6
MAL		 994 GMainContext *context,
995 bool set_open)
94a40fc5 996{
0ec7b3e7 997 Chardev *s;
777357d7 998 ChardevClass *cc;
386f07d1
MAL		 999 int fe_open;
1000
1001 s = b->chr;
1002 if (!s) {
94a40fc5
MAL		 1003 return;
1004 }
1005
777357d7 1006 cc = CHARDEV_GET_CLASS(s);
386f07d1
MAL		 1007 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
1008 fe_open = 0;
1009 remove_fd_in_watch(s);
1010 } else {
1011 fe_open = 1;
1012 }
a4afa548
MAL		 1013 b->chr_can_read = fd_can_read;
1014 b->chr_read = fd_read;
1015 b->chr_event = fd_event;
1016 b->opaque = opaque;
777357d7
MAL		 1017 if (cc->chr_update_read_handler) {
1018 cc->chr_update_read_handler(s, context);
386f07d1
MAL		 1019 }
1020
39ab61c6 1021 if (set_open) {
386f07d1
MAL		 1022 qemu_chr_fe_set_open(b, fe_open);
1023 }
94a40fc5 1024
386f07d1
MAL		 1025 if (fe_open) {
1026 qemu_chr_fe_take_focus(b);
1027 /* We're connecting to an already opened device, so let's make sure we
1028 also get the open event */
1029 if (s->be_open) {
1030 qemu_chr_be_generic_open(s);
1031 }
1032 }
1033
777357d7 1034 if (CHARDEV_IS_MUX(s)) {
386f07d1 1035 mux_chr_set_handlers(s, context);
94a40fc5
MAL		 1036 }
1037}
1038
1039void qemu_chr_fe_take_focus(CharBackend *b)
1040{
fa394ed6
MAL		 1041 if (!b->chr) {
1042 return;
1043 }
1044
777357d7 1045 if (CHARDEV_IS_MUX(b->chr)) {
fb5e19d2 1046 mux_set_focus(b->chr, b->tag);
94a40fc5
MAL		 1047 }
1048}
6f97dba0 1049
96c63847
AL		 1050typedef struct IOWatchPoll
1051{
d185c094
PB		 1052 GSource parent;
1053
9894dc0c 1054 QIOChannel *ioc;
96c63847 1055 GSource *src;
96c63847
AL		 1056
1057 IOCanReadHandler *fd_can_read;
1e885b25 1058 GSourceFunc fd_read;
96c63847 1059 void *opaque;
e92aa36a 1060 GMainContext *context;
96c63847
AL		 1061} IOWatchPoll;
1062
96c63847
AL		 1063static IOWatchPoll *io_watch_poll_from_source(GSource *source)
1064{
d185c094 1065 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 1066}
1067
e92aa36a
ZC		 1068static gboolean io_watch_poll_prepare(GSource *source,
1069 gint *timeout_)
96c63847
AL		 1070{
1071 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 1072 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 1073 bool was_active = iwp->src != NULL;
d185c094 1074 if (was_active == now_active) {
96c63847
AL		 1075 return FALSE;
1076 }
1077
d185c094 1078 if (now_active) {
9894dc0c
DB		 1079 iwp->src = qio_channel_create_watch(
1080 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 1081 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
e92aa36a 1082 g_source_attach(iwp->src, iwp->context);
d185c094 1083 } else {
1e885b25
PB		 1084 g_source_destroy(iwp->src);
1085 g_source_unref(iwp->src);
1086 iwp->src = NULL;
d185c094
PB		 1087 }
1088 return FALSE;
96c63847
AL		 1089}
1090
1091static gboolean io_watch_poll_check(GSource *source)
1092{
d185c094 1093 return FALSE;
96c63847
AL		 1094}
1095
1096static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
1097 gpointer user_data)
1098{
d185c094 1099 abort();
96c63847
AL		 1100}
1101
1102static void io_watch_poll_finalize(GSource *source)
1103{
2b316774
PB		 1104 /* Due to a glib bug, removing the last reference to a source
1105 * inside a finalize callback causes recursive locking (and a
1106 * deadlock). This is not a problem inside other callbacks,
1107 * including dispatch callbacks, so we call io_remove_watch_poll
1108 * to remove this source. At this point, iwp->src must
1109 * be NULL, or we would leak it.
1110 *
1111 * This would be solved much more elegantly by child sources,
1112 * but we support older glib versions that do not have them.
1113 */
96c63847 1114 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 1115 assert(iwp->src == NULL);
96c63847
AL		 1116}
1117
1118static GSourceFuncs io_watch_poll_funcs = {
1119 .prepare = io_watch_poll_prepare,
1120 .check = io_watch_poll_check,
1121 .dispatch = io_watch_poll_dispatch,
1122 .finalize = io_watch_poll_finalize,
1123};
1124
1125/* Can only be used for read */
0ec7b3e7 1126static guint io_add_watch_poll(Chardev *chr,
e93a68e1 1127 QIOChannel *ioc,
96c63847 1128 IOCanReadHandler *fd_can_read,
9894dc0c 1129 QIOChannelFunc fd_read,
e92aa36a
ZC		 1130 gpointer user_data,
1131 GMainContext *context)
96c63847
AL		 1132{
1133 IOWatchPoll *iwp;
0ca5aa4f 1134 int tag;
e93a68e1 1135 char *name;
96c63847 1136
e92aa36a
ZC		 1137 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
1138 sizeof(IOWatchPoll));
96c63847
AL		 1139 iwp->fd_can_read = fd_can_read;
1140 iwp->opaque = user_data;
9894dc0c 1141 iwp->ioc = ioc;
1e885b25
PB		 1142 iwp->fd_read = (GSourceFunc) fd_read;
1143 iwp->src = NULL;
e92aa36a 1144 iwp->context = context;
96c63847 1145
e93a68e1
DB		 1146 name = g_strdup_printf("chardev-iowatch-%s", chr->label);
1147 g_source_set_name((GSource *)iwp, name);
1148 g_free(name);
1149
e92aa36a 1150 tag = g_source_attach(&iwp->parent, context);
0ca5aa4f
PB		 1151 g_source_unref(&iwp->parent);
1152 return tag;
96c63847
AL		 1153}
1154
2b316774
PB		 1155static void io_remove_watch_poll(guint tag)
1156{
1157 GSource *source;
1158 IOWatchPoll *iwp;
1159
1160 g_return_if_fail (tag > 0);
1161
1162 source = g_main_context_find_source_by_id(NULL, tag);
1163 g_return_if_fail (source != NULL);
1164
1165 iwp = io_watch_poll_from_source(source);
1166 if (iwp->src) {
1167 g_source_destroy(iwp->src);
1168 g_source_unref(iwp->src);
1169 iwp->src = NULL;
1170 }
1171 g_source_destroy(&iwp->parent);
1172}
1173
0ec7b3e7 1174static void remove_fd_in_watch(Chardev *chr)
26da70c7
AS		 1175{
1176 if (chr->fd_in_tag) {
1177 io_remove_watch_poll(chr->fd_in_tag);
1178 chr->fd_in_tag = 0;
1179 }
1180}
1181
96c63847 1182
9894dc0c
DB		 1183static int io_channel_send_full(QIOChannel *ioc,
1184 const void *buf, size_t len,
1185 int *fds, size_t nfds)
76a9644b 1186{
9894dc0c 1187 size_t offset = 0;
76a9644b 1188
9894dc0c
DB		 1189 while (offset < len) {
1190 ssize_t ret = 0;
1191 struct iovec iov = { .iov_base = (char *)buf + offset,
1192 .iov_len = len - offset };
1193
1194 ret = qio_channel_writev_full(
1195 ioc, &iov, 1,
1196 fds, nfds, NULL);
1197 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 1198 if (offset) {
1199 return offset;
1200 }
76a9644b 1201
e046fb44
DB		 1202 errno = EAGAIN;
1203 return -1;
1204 } else if (ret < 0) {
9894dc0c
DB		 1205 errno = EINVAL;
1206 return -1;
1207 }
76a9644b 1208
9894dc0c
DB		 1209 offset += ret;
1210 }
76a9644b 1211
9894dc0c 1212 return offset;
76a9644b
AL		 1213}
1214
9894dc0c 1215
0ff0fad2 1216#ifndef _WIN32
9894dc0c 1217static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 1218{
9894dc0c 1219 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 1220}
96c63847 1221
0ec7b3e7
MAL		 1222typedef struct FDChardev {
1223 Chardev parent;
1224 Chardev *chr;
9894dc0c 1225 QIOChannel *ioc_in, *ioc_out;
6f97dba0 1226 int max_size;
0ec7b3e7 1227} FDChardev;
6f97dba0 1228
777357d7
MAL		 1229#define TYPE_CHARDEV_FD "chardev-fd"
1230#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD)
1231
9005b2a7 1232/* Called with chr_write_lock held. */
0ec7b3e7 1233static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len)
6f97dba0 1234{
777357d7 1235 FDChardev *s = FD_CHARDEV(chr);
41ac54b2 1236
9894dc0c 1237 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1238}
1239
9894dc0c 1240static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0 1241{
777357d7
MAL		 1242 Chardev *chr = CHARDEV(opaque);
1243 FDChardev *s = FD_CHARDEV(opaque);
a29753f8 1244 int len;
9bd7854e 1245 uint8_t buf[READ_BUF_LEN];
9894dc0c 1246 ssize_t ret;
6f97dba0
AL		 1247
1248 len = sizeof(buf);
a29753f8 1249 if (len > s->max_size) {
6f97dba0 1250 len = s->max_size;
a29753f8
AL		 1251 }
1252 if (len == 0) {
cdbf6e16 1253 return TRUE;
a29753f8
AL		 1254 }
1255
9894dc0c
DB		 1256 ret = qio_channel_read(
1257 chan, (gchar *)buf, len, NULL);
1258 if (ret == 0) {
26da70c7 1259 remove_fd_in_watch(chr);
a425d23f 1260 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1261 return FALSE;
6f97dba0 1262 }
9894dc0c
DB		 1263 if (ret > 0) {
1264 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1265 }
a29753f8
AL		 1266
1267 return TRUE;
1268}
1269
1270static int fd_chr_read_poll(void *opaque)
1271{
777357d7
MAL		 1272 Chardev *chr = CHARDEV(opaque);
1273 FDChardev *s = FD_CHARDEV(opaque);
a29753f8
AL		 1274
1275 s->max_size = qemu_chr_be_can_write(chr);
1276 return s->max_size;
6f97dba0
AL		 1277}
1278
0ec7b3e7 1279static GSource *fd_chr_add_watch(Chardev *chr, GIOCondition cond)
23673ca7 1280{
777357d7 1281 FDChardev *s = FD_CHARDEV(chr);
9894dc0c 1282 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1283}
1284
0ec7b3e7 1285static void fd_chr_update_read_handler(Chardev *chr,
a4afa548 1286 GMainContext *context)
6f97dba0 1287{
777357d7 1288 FDChardev *s = FD_CHARDEV(chr);
6f97dba0 1289
26da70c7 1290 remove_fd_in_watch(chr);
9894dc0c 1291 if (s->ioc_in) {
e93a68e1 1292 chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in,
9894dc0c 1293 fd_chr_read_poll,
e92aa36a
ZC		 1294 fd_chr_read, chr,
1295 context);
6f97dba0
AL		 1296 }
1297}
1298
7f2fe073 1299static void char_fd_finalize(Object *obj)
6f97dba0 1300{
7f2fe073
MAL		 1301 Chardev *chr = CHARDEV(obj);
1302 FDChardev *s = FD_CHARDEV(obj);
6f97dba0 1303
26da70c7 1304 remove_fd_in_watch(chr);
9894dc0c
DB		 1305 if (s->ioc_in) {
1306 object_unref(OBJECT(s->ioc_in));
a29753f8 1307 }
9894dc0c
DB		 1308 if (s->ioc_out) {
1309 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1310 }
1311
a425d23f 1312 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1313}
1314
1315/* open a character device to a unix fd */
777357d7
MAL		 1316static void qemu_chr_open_fd(Chardev *chr,
1317 int fd_in, int fd_out)
6f97dba0 1318{
777357d7 1319 FDChardev *s = FD_CHARDEV(chr);
e93a68e1 1320 char *name;
6f97dba0 1321
9894dc0c 1322 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
e93a68e1
DB		 1323 name = g_strdup_printf("chardev-file-in-%s", chr->label);
1324 qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name);
1325 g_free(name);
9894dc0c 1326 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
e93a68e1
DB		 1327 name = g_strdup_printf("chardev-file-out-%s", chr->label);
1328 qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name);
1329 g_free(name);
4ff12bdb 1330 qemu_set_nonblock(fd_out);
a29753f8 1331 s->chr = chr;
777357d7 1332}
6f97dba0 1333
777357d7
MAL		 1334static void char_fd_class_init(ObjectClass *oc, void *data)
1335{
1336 ChardevClass *cc = CHARDEV_CLASS(oc);
1337
1338 cc->chr_add_watch = fd_chr_add_watch;
1339 cc->chr_write = fd_chr_write;
1340 cc->chr_update_read_handler = fd_chr_update_read_handler;
6f97dba0
AL		 1341}
1342
777357d7
MAL		 1343static const TypeInfo char_fd_type_info = {
1344 .name = TYPE_CHARDEV_FD,
1345 .parent = TYPE_CHARDEV,
1346 .instance_size = sizeof(FDChardev),
7f2fe073 1347 .instance_finalize = char_fd_finalize,
777357d7
MAL		 1348 .class_init = char_fd_class_init,
1349 .abstract = true,
1350};
1351
1352static void qemu_chr_open_pipe(Chardev *chr,
1353 ChardevBackend *backend,
1354 bool *be_opened,
1355 Error **errp)
6f97dba0 1356{
32bafa8f 1357 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1358 int fd_in, fd_out;
0ff0fad2
DB		 1359 char *filename_in;
1360 char *filename_out;
548cbb36 1361 const char *filename = opts->device;
0ff0fad2
DB		 1362
1363 filename_in = g_strdup_printf("%s.in", filename);
1364 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1365 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1366 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1367 g_free(filename_in);
1368 g_free(filename_out);
6f97dba0
AL		 1369 if (fd_in < 0 || fd_out < 0) {
1370 if (fd_in >= 0)
1371 close(fd_in);
1372 if (fd_out >= 0)
1373 close(fd_out);
b181e047 1374 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1375 if (fd_in < 0) {
20cbe7a2 1376 error_setg_file_open(errp, errno, filename);
777357d7 1377 return;
a89dd6c3 1378 }
6f97dba0 1379 }
777357d7 1380 qemu_chr_open_fd(chr, fd_in, fd_out);
6f97dba0
AL		 1381}
1382
6f97dba0
AL		 1383/* init terminal so that we can grab keys */
1384static struct termios oldtty;
1385static int old_fd0_flags;
c88930a6 1386static bool stdio_in_use;
bb002513 1387static bool stdio_allow_signal;
e76d4420
GH		 1388static bool stdio_echo_state;
1389
0ec7b3e7 1390static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo);
6f97dba0
AL		 1391
1392static void term_exit(void)
1393{
1394 tcsetattr (0, TCSANOW, &oldtty);
1395 fcntl(0, F_SETFL, old_fd0_flags);
1396}
1397
e76d4420
GH		 1398static void term_stdio_handler(int sig)
1399{
1400 /* restore echo after resume from suspend. */
1401 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1402}
1403
0ec7b3e7 1404static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo)
6f97dba0
AL		 1405{
1406 struct termios tty;
1407
e76d4420 1408 stdio_echo_state = echo;
0369364b 1409 tty = oldtty;
bb002513
PB		 1410 if (!echo) {
1411 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1412 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1413 tty.c_oflag |= OPOST;
1414 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1415 tty.c_cflag &= ~(CSIZE|PARENB);
1416 tty.c_cflag |= CS8;
1417 tty.c_cc[VMIN] = 1;
1418 tty.c_cc[VTIME] = 0;
1419 }
bb002513 1420 if (!stdio_allow_signal)
6f97dba0 1421 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1422
1423 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1424}
1425
4d833ada 1426static void char_stdio_finalize(Object *obj)
6f97dba0
AL		 1427{
1428 term_exit();
6f97dba0
AL		 1429}
1430
777357d7
MAL		 1431static void qemu_chr_open_stdio(Chardev *chr,
1432 ChardevBackend *backend,
1433 bool *be_opened,
1434 Error **errp)
6f97dba0 1435{
32bafa8f 1436 ChardevStdio *opts = backend->u.stdio.data;
e76d4420 1437 struct sigaction act;
6f97dba0 1438
ab51b1d5 1439 if (is_daemonized()) {
8c84b25d 1440 error_setg(errp, "cannot use stdio with -daemonize");
777357d7 1441 return;
ab51b1d5 1442 }
c88930a6
LL		 1443
1444 if (stdio_in_use) {
8c84b25d 1445 error_setg(errp, "cannot use stdio by multiple character devices");
777357d7 1446 return;
c88930a6
LL		 1447 }
1448
1449 stdio_in_use = true;
ed7a1540 1450 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1451 tcgetattr(0, &oldtty);
4ff12bdb 1452 qemu_set_nonblock(0);
ed7a1540 1453 atexit(term_exit);
0369364b 1454
e76d4420
GH		 1455 memset(&act, 0, sizeof(act));
1456 act.sa_handler = term_stdio_handler;
1457 sigaction(SIGCONT, &act, NULL);
1458
777357d7
MAL		 1459 qemu_chr_open_fd(chr, 0, 1);
1460
7c358031
GH		 1461 if (opts->has_signal) {
1462 stdio_allow_signal = opts->signal;
1463 }
5345fdb4 1464 qemu_chr_set_echo_stdio(chr, false);
6f97dba0
AL		 1465}
1466
6f97dba0 1467#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1468 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1469 || defined(__GLIBC__)
6f97dba0 1470
d809ab95
PB		 1471#define HAVE_CHARDEV_SERIAL 1
1472#define HAVE_CHARDEV_PTY 1
e551498e 1473
6f97dba0 1474typedef struct {
0ec7b3e7 1475 Chardev parent;
9894dc0c 1476 QIOChannel *ioc;
6f97dba0 1477 int read_bytes;
9005b2a7 1478
0ec7b3e7 1479 /* Protected by the Chardev chr_write_lock. */
9005b2a7 1480 int connected;
8aa33caf 1481 guint timer_tag;
7b3621f4 1482 guint open_tag;
0ec7b3e7 1483} PtyChardev;
6f97dba0 1484
777357d7
MAL		 1485#define PTY_CHARDEV(obj) OBJECT_CHECK(PtyChardev, (obj), TYPE_CHARDEV_PTY)
1486
0ec7b3e7
MAL		 1487static void pty_chr_update_read_handler_locked(Chardev *chr);
1488static void pty_chr_state(Chardev *chr, int connected);
6f97dba0 1489
8aa33caf
AL		 1490static gboolean pty_chr_timer(gpointer opaque)
1491{
777357d7
MAL		 1492 struct Chardev *chr = CHARDEV(opaque);
1493 PtyChardev *s = PTY_CHARDEV(opaque);
8aa33caf 1494
9005b2a7 1495 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1496 s->timer_tag = 0;
7b3621f4 1497 s->open_tag = 0;
b0d768c3
GH		 1498 if (!s->connected) {
1499 /* Next poll ... */
9005b2a7 1500 pty_chr_update_read_handler_locked(chr);
b0d768c3 1501 }
9005b2a7 1502 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1503 return FALSE;
1504}
1505
9005b2a7 1506/* Called with chr_write_lock held. */
0ec7b3e7 1507static void pty_chr_rearm_timer(Chardev *chr, int ms)
8aa33caf 1508{
777357d7 1509 PtyChardev *s = PTY_CHARDEV(chr);
e93a68e1 1510 char *name;
8aa33caf
AL		 1511
1512 if (s->timer_tag) {
1513 g_source_remove(s->timer_tag);
1514 s->timer_tag = 0;
1515 }
1516
1517 if (ms == 1000) {
e93a68e1 1518 name = g_strdup_printf("pty-timer-secs-%s", chr->label);
8aa33caf
AL		 1519 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1520 } else {
e93a68e1 1521 name = g_strdup_printf("pty-timer-ms-%s", chr->label);
8aa33caf
AL		 1522 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1523 }
e93a68e1
DB		 1524 g_source_set_name_by_id(s->timer_tag, name);
1525 g_free(name);
8aa33caf
AL		 1526}
1527
9005b2a7 1528/* Called with chr_write_lock held. */
0ec7b3e7 1529static void pty_chr_update_read_handler_locked(Chardev *chr)
1bb7fe72 1530{
777357d7 1531 PtyChardev *s = PTY_CHARDEV(chr);
1bb7fe72 1532 GPollFD pfd;
c1f24489 1533 int rc;
9894dc0c 1534 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1535
9894dc0c 1536 pfd.fd = fioc->fd;
1bb7fe72
PB		 1537 pfd.events = G_IO_OUT;
1538 pfd.revents = 0;
c1f24489
PB		 1539 do {
1540 rc = g_poll(&pfd, 1, 0);
1541 } while (rc == -1 && errno == EINTR);
1542 assert(rc >= 0);
1543
1bb7fe72
PB		 1544 if (pfd.revents & G_IO_HUP) {
1545 pty_chr_state(chr, 0);
1546 } else {
1547 pty_chr_state(chr, 1);
1548 }
1549}
1550
0ec7b3e7 1551static void pty_chr_update_read_handler(Chardev *chr,
a4afa548 1552 GMainContext *context)
9005b2a7
PB		 1553{
1554 qemu_mutex_lock(&chr->chr_write_lock);
1555 pty_chr_update_read_handler_locked(chr);
1556 qemu_mutex_unlock(&chr->chr_write_lock);
1557}
1558
1559/* Called with chr_write_lock held. */
777357d7 1560static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len)
6f97dba0 1561{
777357d7 1562 PtyChardev *s = PTY_CHARDEV(chr);
6f97dba0
AL		 1563
1564 if (!s->connected) {
1565 /* guest sends data, check for (re-)connect */
9005b2a7 1566 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1567 if (!s->connected) {
1568 return 0;
1569 }
6f97dba0 1570 }
9894dc0c 1571 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1572}
1573
0ec7b3e7 1574static GSource *pty_chr_add_watch(Chardev *chr, GIOCondition cond)
e6a87ed8 1575{
777357d7 1576 PtyChardev *s = PTY_CHARDEV(chr);
62c339c5
PB		 1577 if (!s->connected) {
1578 return NULL;
1579 }
9894dc0c 1580 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1581}
1582
6f97dba0
AL		 1583static int pty_chr_read_poll(void *opaque)
1584{
777357d7
MAL		 1585 Chardev *chr = CHARDEV(opaque);
1586 PtyChardev *s = PTY_CHARDEV(opaque);
6f97dba0 1587
909cda12 1588 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1589 return s->read_bytes;
1590}
1591
9894dc0c 1592static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0 1593{
777357d7
MAL		 1594 Chardev *chr = CHARDEV(opaque);
1595 PtyChardev *s = PTY_CHARDEV(opaque);
9894dc0c 1596 gsize len;
9bd7854e 1597 uint8_t buf[READ_BUF_LEN];
9894dc0c 1598 ssize_t ret;
6f97dba0
AL		 1599
1600 len = sizeof(buf);
1601 if (len > s->read_bytes)
1602 len = s->read_bytes;
cdbf6e16
PB		 1603 if (len == 0) {
1604 return TRUE;
1605 }
9894dc0c
DB		 1606 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1607 if (ret <= 0) {
6f97dba0 1608 pty_chr_state(chr, 0);
093d3a20
AL		 1609 return FALSE;
1610 } else {
6f97dba0 1611 pty_chr_state(chr, 1);
9894dc0c 1612 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1613 }
093d3a20 1614 return TRUE;
6f97dba0
AL		 1615}
1616
7b3621f4
PB		 1617static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1618{
777357d7
MAL		 1619 Chardev *chr = CHARDEV(opaque);
1620 PtyChardev *s = PTY_CHARDEV(opaque);
7b3621f4
PB		 1621
1622 s->open_tag = 0;
1623 qemu_chr_be_generic_open(chr);
1624 return FALSE;
1625}
1626
9005b2a7 1627/* Called with chr_write_lock held. */
0ec7b3e7 1628static void pty_chr_state(Chardev *chr, int connected)
6f97dba0 1629{
777357d7 1630 PtyChardev *s = PTY_CHARDEV(chr);
6f97dba0
AL		 1631
1632 if (!connected) {
7b3621f4
PB		 1633 if (s->open_tag) {
1634 g_source_remove(s->open_tag);
1635 s->open_tag = 0;
1636 }
26da70c7 1637 remove_fd_in_watch(chr);
6f97dba0 1638 s->connected = 0;
6f97dba0
AL		 1639 /* (re-)connect poll interval for idle guests: once per second.
1640 * We check more frequently in case the guests sends data to
1641 * the virtual device linked to our pty. */
8aa33caf 1642 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1643 } else {
85a67692
PB		 1644 if (s->timer_tag) {
1645 g_source_remove(s->timer_tag);
1646 s->timer_tag = 0;
1647 }
1648 if (!s->connected) {
7b3621f4 1649 g_assert(s->open_tag == 0);
85a67692 1650 s->connected = 1;
7b3621f4 1651 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1652 }
1653 if (!chr->fd_in_tag) {
e93a68e1 1654 chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
9894dc0c 1655 pty_chr_read_poll,
e92aa36a
ZC		 1656 pty_chr_read,
1657 chr, NULL);
85a67692 1658 }
6f97dba0
AL		 1659 }
1660}
1661
fa943b5e 1662static void char_pty_finalize(Object *obj)
6f97dba0 1663{
fa943b5e
MAL		 1664 Chardev *chr = CHARDEV(obj);
1665 PtyChardev *s = PTY_CHARDEV(obj);
6f97dba0 1666
7b3621f4
PB		 1667 qemu_mutex_lock(&chr->chr_write_lock);
1668 pty_chr_state(chr, 0);
9894dc0c 1669 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1670 if (s->timer_tag) {
1671 g_source_remove(s->timer_tag);
910b6368 1672 s->timer_tag = 0;
8aa33caf 1673 }
7b3621f4 1674 qemu_mutex_unlock(&chr->chr_write_lock);
a425d23f 1675 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1676}
1677
777357d7
MAL		 1678static void char_pty_open(Chardev *chr,
1679 ChardevBackend *backend,
1680 bool *be_opened,
1681 Error **errp)
6f97dba0 1682{
0ec7b3e7 1683 PtyChardev *s;
e68c5958 1684 int master_fd, slave_fd;
6f97dba0 1685 char pty_name[PATH_MAX];
e93a68e1 1686 char *name;
6f97dba0 1687
4efeabbb
MT		 1688 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1689 if (master_fd < 0) {
c2e75a43 1690 error_setg_errno(errp, errno, "Failed to create PTY");
777357d7 1691 return;
6f97dba0
AL		 1692 }
1693
837a183f 1694 close(slave_fd);
fac6688a 1695 qemu_set_nonblock(master_fd);
6f97dba0 1696
4efeabbb 1697 chr->filename = g_strdup_printf("pty:%s", pty_name);
776a32a0 1698 error_report("char device redirected to %s (label %s)",
777357d7 1699 pty_name, chr->label);
6f97dba0 1700
777357d7 1701 s = PTY_CHARDEV(chr);
9894dc0c 1702 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
e93a68e1
DB		 1703 name = g_strdup_printf("chardev-pty-%s", chr->label);
1704 qio_channel_set_name(QIO_CHANNEL(s->ioc), name);
1705 g_free(name);
8aa33caf 1706 s->timer_tag = 0;
41ac54b2 1707 *be_opened = false;
6f97dba0
AL		 1708}
1709
b68e956a
MAL		 1710static const CharDriver pty_driver = {
1711 .kind = CHARDEV_BACKEND_KIND_PTY,
777357d7
MAL		 1712};
1713
1714static void char_pty_class_init(ObjectClass *oc, void *data)
1715{
1716 ChardevClass *cc = CHARDEV_CLASS(oc);
1717
1718 cc->open = char_pty_open;
1719 cc->chr_write = char_pty_chr_write;
1720 cc->chr_update_read_handler = pty_chr_update_read_handler;
1721 cc->chr_add_watch = pty_chr_add_watch;
777357d7
MAL		 1722}
1723
1724static const TypeInfo char_pty_type_info = {
1725 .name = TYPE_CHARDEV_PTY,
1726 .parent = TYPE_CHARDEV,
1727 .instance_size = sizeof(PtyChardev),
fa943b5e 1728 .instance_finalize = char_pty_finalize,
777357d7 1729 .class_init = char_pty_class_init,
b68e956a
MAL		 1730};
1731
6f97dba0
AL		 1732static void tty_serial_init(int fd, int speed,
1733 int parity, int data_bits, int stop_bits)
1734{
1735 struct termios tty;
1736 speed_t spd;
1737
1738#if 0
1739 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1740 speed, parity, data_bits, stop_bits);
1741#endif
1742 tcgetattr (fd, &tty);
1743
45eea13b
SW		 1744#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1745 speed = speed * 10 / 11;
1746 do {
1747 check_speed(50);
1748 check_speed(75);
1749 check_speed(110);
1750 check_speed(134);
1751 check_speed(150);
1752 check_speed(200);
1753 check_speed(300);
1754 check_speed(600);
1755 check_speed(1200);
1756 check_speed(1800);
1757 check_speed(2400);
1758 check_speed(4800);
1759 check_speed(9600);
1760 check_speed(19200);
1761 check_speed(38400);
1762 /* Non-Posix values follow. They may be unsupported on some systems. */
1763 check_speed(57600);
1764 check_speed(115200);
1765#ifdef B230400
1766 check_speed(230400);
1767#endif
1768#ifdef B460800
1769 check_speed(460800);
1770#endif
1771#ifdef B500000
1772 check_speed(500000);
1773#endif
1774#ifdef B576000
1775 check_speed(576000);
1776#endif
1777#ifdef B921600
1778 check_speed(921600);
1779#endif
1780#ifdef B1000000
1781 check_speed(1000000);
1782#endif
1783#ifdef B1152000
1784 check_speed(1152000);
1785#endif
1786#ifdef B1500000
1787 check_speed(1500000);
1788#endif
1789#ifdef B2000000
1790 check_speed(2000000);
1791#endif
1792#ifdef B2500000
1793 check_speed(2500000);
1794#endif
1795#ifdef B3000000
1796 check_speed(3000000);
1797#endif
1798#ifdef B3500000
1799 check_speed(3500000);
1800#endif
1801#ifdef B4000000
1802 check_speed(4000000);
1803#endif
6f97dba0 1804 spd = B115200;
45eea13b 1805 } while (0);
6f97dba0
AL		 1806
1807 cfsetispeed(&tty, spd);
1808 cfsetospeed(&tty, spd);
1809
1810 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1811 |INLCR|IGNCR|ICRNL|IXON);
1812 tty.c_oflag |= OPOST;
1813 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1814 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1815 switch(data_bits) {
1816 default:
1817 case 8:
1818 tty.c_cflag |= CS8;
1819 break;
1820 case 7:
1821 tty.c_cflag |= CS7;
1822 break;
1823 case 6:
1824 tty.c_cflag |= CS6;
1825 break;
1826 case 5:
1827 tty.c_cflag |= CS5;
1828 break;
1829 }
1830 switch(parity) {
1831 default:
1832 case 'N':
1833 break;
1834 case 'E':
1835 tty.c_cflag |= PARENB;
1836 break;
1837 case 'O':
1838 tty.c_cflag |= PARENB | PARODD;
1839 break;
1840 }
1841 if (stop_bits == 2)
1842 tty.c_cflag |= CSTOPB;
1843
1844 tcsetattr (fd, TCSANOW, &tty);
1845}
1846
0ec7b3e7 1847static int tty_serial_ioctl(Chardev *chr, int cmd, void *arg)
6f97dba0 1848{
777357d7 1849 FDChardev *s = FD_CHARDEV(chr);
9894dc0c 1850 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1851
1852 switch(cmd) {
1853 case CHR_IOCTL_SERIAL_SET_PARAMS:
1854 {
1855 QEMUSerialSetParams *ssp = arg;
9894dc0c 1856 tty_serial_init(fioc->fd,
a29753f8 1857 ssp->speed, ssp->parity,
6f97dba0
AL		 1858 ssp->data_bits, ssp->stop_bits);
1859 }
1860 break;
1861 case CHR_IOCTL_SERIAL_SET_BREAK:
1862 {
1863 int enable = *(int *)arg;
a29753f8 1864 if (enable) {
9894dc0c 1865 tcsendbreak(fioc->fd, 1);
a29753f8 1866 }
6f97dba0
AL		 1867 }
1868 break;
1869 case CHR_IOCTL_SERIAL_GET_TIOCM:
1870 {
1871 int sarg = 0;
1872 int *targ = (int *)arg;
9894dc0c 1873 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1874 *targ = 0;
b4abdfa4 1875 if (sarg & TIOCM_CTS)
6f97dba0 1876 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1877 if (sarg & TIOCM_CAR)
6f97dba0 1878 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1879 if (sarg & TIOCM_DSR)
6f97dba0 1880 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1881 if (sarg & TIOCM_RI)
6f97dba0 1882 *targ |= CHR_TIOCM_RI;
b4abdfa4 1883 if (sarg & TIOCM_DTR)
6f97dba0 1884 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1885 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1886 *targ |= CHR_TIOCM_RTS;
1887 }
1888 break;
1889 case CHR_IOCTL_SERIAL_SET_TIOCM:
1890 {
1891 int sarg = *(int *)arg;
1892 int targ = 0;
9894dc0c 1893 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1894 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1895 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1896 if (sarg & CHR_TIOCM_CTS)
1897 targ |= TIOCM_CTS;
1898 if (sarg & CHR_TIOCM_CAR)
1899 targ |= TIOCM_CAR;
1900 if (sarg & CHR_TIOCM_DSR)
1901 targ |= TIOCM_DSR;
1902 if (sarg & CHR_TIOCM_RI)
1903 targ |= TIOCM_RI;
1904 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1905 targ |= TIOCM_DTR;
b4abdfa4 1906 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1907 targ |= TIOCM_RTS;
9894dc0c 1908 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1909 }
1910 break;
1911 default:
1912 return -ENOTSUP;
1913 }
1914 return 0;
1915}
6f97dba0
AL		 1916#endif /* __linux__ || __sun__ */
1917
1918#if defined(__linux__)
e551498e
GH		 1919
1920#define HAVE_CHARDEV_PARPORT 1
1921
6f97dba0 1922typedef struct {
0ec7b3e7 1923 Chardev parent;
6f97dba0
AL		 1924 int fd;
1925 int mode;
0ec7b3e7 1926} ParallelChardev;
6f97dba0 1927
777357d7
MAL		 1928#define PARALLEL_CHARDEV(obj) \
1929 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
1930
0ec7b3e7 1931static int pp_hw_mode(ParallelChardev *s, uint16_t mode)
6f97dba0
AL		 1932{
1933 if (s->mode != mode) {
1934 int m = mode;
1935 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1936 return 0;
1937 s->mode = mode;
1938 }
1939 return 1;
1940}
1941
0ec7b3e7 1942static int pp_ioctl(Chardev *chr, int cmd, void *arg)
6f97dba0 1943{
777357d7 1944 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
6f97dba0
AL		 1945 int fd = drv->fd;
1946 uint8_t b;
1947
1948 switch(cmd) {
1949 case CHR_IOCTL_PP_READ_DATA:
1950 if (ioctl(fd, PPRDATA, &b) < 0)
1951 return -ENOTSUP;
1952 *(uint8_t *)arg = b;
1953 break;
1954 case CHR_IOCTL_PP_WRITE_DATA:
1955 b = *(uint8_t *)arg;
1956 if (ioctl(fd, PPWDATA, &b) < 0)
1957 return -ENOTSUP;
1958 break;
1959 case CHR_IOCTL_PP_READ_CONTROL:
1960 if (ioctl(fd, PPRCONTROL, &b) < 0)
1961 return -ENOTSUP;
1962 /* Linux gives only the lowest bits, and no way to know data
1963 direction! For better compatibility set the fixed upper
1964 bits. */
1965 *(uint8_t *)arg = b | 0xc0;
1966 break;
1967 case CHR_IOCTL_PP_WRITE_CONTROL:
1968 b = *(uint8_t *)arg;
1969 if (ioctl(fd, PPWCONTROL, &b) < 0)
1970 return -ENOTSUP;
1971 break;
1972 case CHR_IOCTL_PP_READ_STATUS:
1973 if (ioctl(fd, PPRSTATUS, &b) < 0)
1974 return -ENOTSUP;
1975 *(uint8_t *)arg = b;
1976 break;
1977 case CHR_IOCTL_PP_DATA_DIR:
1978 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1979 return -ENOTSUP;
1980 break;
1981 case CHR_IOCTL_PP_EPP_READ_ADDR:
1982 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1983 struct ParallelIOArg *parg = arg;
1984 int n = read(fd, parg->buffer, parg->count);
1985 if (n != parg->count) {
1986 return -EIO;
1987 }
1988 }
1989 break;
1990 case CHR_IOCTL_PP_EPP_READ:
1991 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1992 struct ParallelIOArg *parg = arg;
1993 int n = read(fd, parg->buffer, parg->count);
1994 if (n != parg->count) {
1995 return -EIO;
1996 }
1997 }
1998 break;
1999 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
2000 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
2001 struct ParallelIOArg *parg = arg;
2002 int n = write(fd, parg->buffer, parg->count);
2003 if (n != parg->count) {
2004 return -EIO;
2005 }
2006 }
2007 break;
2008 case CHR_IOCTL_PP_EPP_WRITE:
2009 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
2010 struct ParallelIOArg *parg = arg;
2011 int n = write(fd, parg->buffer, parg->count);
2012 if (n != parg->count) {
2013 return -EIO;
2014 }
2015 }
2016 break;
2017 default:
2018 return -ENOTSUP;
2019 }
2020 return 0;
2021}
2022
777357d7
MAL		 2023static void qemu_chr_open_pp_fd(Chardev *chr,
2024 int fd,
2025 bool *be_opened,
2026 Error **errp)
6f97dba0 2027{
777357d7 2028 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
6f97dba0
AL		 2029
2030 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 2031 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 2032 close(fd);
777357d7 2033 return;
d0d7708b 2034 }
27ef9cb0 2035
27ef9cb0
PB		 2036 drv->fd = fd;
2037 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0
AL		 2038}
2039#endif /* __linux__ */
2040
a167ba50 2041#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 2042
2043#define HAVE_CHARDEV_PARPORT 1
2044
41ac54b2 2045typedef struct {
0ec7b3e7 2046 Chardev parent;
41ac54b2 2047 int fd;
0ec7b3e7 2048} ParallelChardev;
41ac54b2 2049
777357d7
MAL		 2050#define PARALLEL_CHARDEV(obj) \
2051 OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL)
2052
0ec7b3e7 2053static int pp_ioctl(Chardev *chr, int cmd, void *arg)
6972f935 2054{
777357d7 2055 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
6972f935
BS		 2056 uint8_t b;
2057
41ac54b2 2058 switch (cmd) {
6972f935 2059 case CHR_IOCTL_PP_READ_DATA:
41ac54b2 2060 if (ioctl(drv->fd, PPIGDATA, &b) < 0) {
6972f935 2061 return -ENOTSUP;
41ac54b2 2062 }
6972f935
BS		 2063 *(uint8_t *)arg = b;
2064 break;
2065 case CHR_IOCTL_PP_WRITE_DATA:
2066 b = *(uint8_t *)arg;
41ac54b2 2067 if (ioctl(drv->fd, PPISDATA, &b) < 0) {
6972f935 2068 return -ENOTSUP;
41ac54b2 2069 }
6972f935
BS		 2070 break;
2071 case CHR_IOCTL_PP_READ_CONTROL:
41ac54b2 2072 if (ioctl(drv->fd, PPIGCTRL, &b) < 0) {
6972f935 2073 return -ENOTSUP;
41ac54b2 2074 }
6972f935
BS		 2075 *(uint8_t *)arg = b;
2076 break;
2077 case CHR_IOCTL_PP_WRITE_CONTROL:
2078 b = *(uint8_t *)arg;
41ac54b2 2079 if (ioctl(drv->fd, PPISCTRL, &b) < 0) {
6972f935 2080 return -ENOTSUP;
41ac54b2 2081 }
6972f935
BS		 2082 break;
2083 case CHR_IOCTL_PP_READ_STATUS:
41ac54b2 2084 if (ioctl(drv->fd, PPIGSTATUS, &b) < 0) {
6972f935 2085 return -ENOTSUP;
41ac54b2 2086 }
6972f935
BS		 2087 *(uint8_t *)arg = b;
2088 break;
2089 default:
2090 return -ENOTSUP;
2091 }
2092 return 0;
2093}
2094
777357d7
MAL		 2095static void qemu_chr_open_pp_fd(Chardev *chr,
2096 int fd,
2097 bool *be_opened,
2098 Error **errp)
6972f935 2099{
777357d7 2100 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
41ac54b2 2101 drv->fd = fd;
82878dac 2102 *be_opened = false;
6972f935
BS		 2103}
2104#endif
2105
6f97dba0
AL		 2106#else /* _WIN32 */
2107
d809ab95
PB		 2108#define HAVE_CHARDEV_SERIAL 1
2109
6f97dba0 2110typedef struct {
0ec7b3e7 2111 Chardev parent;
6f97dba0
AL		 2112 int max_size;
2113 HANDLE hcom, hrecv, hsend;
9005b2a7 2114 OVERLAPPED orecv;
6f97dba0
AL		 2115 BOOL fpipe;
2116 DWORD len;
9005b2a7 2117
0ec7b3e7 2118 /* Protected by the Chardev chr_write_lock. */
9005b2a7 2119 OVERLAPPED osend;
c266d94e
MAL		 2120 /* FIXME: file/console do not finalize */
2121 bool skip_free;
0ec7b3e7 2122} WinChardev;
6f97dba0 2123
777357d7
MAL		 2124#define TYPE_CHARDEV_WIN "chardev-win"
2125#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
2126
db418a0a 2127typedef struct {
0ec7b3e7 2128 Chardev parent;
db418a0a
FC		 2129 HANDLE hStdIn;
2130 HANDLE hInputReadyEvent;
2131 HANDLE hInputDoneEvent;
2132 HANDLE hInputThread;
2133 uint8_t win_stdio_buf;
0ec7b3e7 2134} WinStdioChardev;
db418a0a 2135
777357d7
MAL		 2136#define TYPE_CHARDEV_WIN_STDIO "chardev-win-stdio"
2137#define WIN_STDIO_CHARDEV(obj) \
2138 OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
2139
6f97dba0
AL		 2140#define NSENDBUF 2048
2141#define NRECVBUF 2048
2142#define MAXCONNECT 1
2143#define NTIMEOUT 5000
2144
2145static int win_chr_poll(void *opaque);
2146static int win_chr_pipe_poll(void *opaque);
2147
53a5736f 2148static void char_win_finalize(Object *obj)
6f97dba0 2149{
53a5736f 2150 Chardev *chr = CHARDEV(obj);
777357d7 2151 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0 2152
c266d94e
MAL		 2153 if (s->skip_free) {
2154 return;
2155 }
2156
6f97dba0
AL		 2157 if (s->hsend) {
2158 CloseHandle(s->hsend);
6f97dba0
AL		 2159 }
2160 if (s->hrecv) {
2161 CloseHandle(s->hrecv);
6f97dba0
AL		 2162 }
2163 if (s->hcom) {
2164 CloseHandle(s->hcom);
6f97dba0
AL		 2165 }
2166 if (s->fpipe)
2167 qemu_del_polling_cb(win_chr_pipe_poll, chr);
2168 else
2169 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 2170
a425d23f 2171 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2172}
2173
0ec7b3e7 2174static int win_chr_init(Chardev *chr, const char *filename, Error **errp)
6f97dba0 2175{
777357d7 2176 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0
AL		 2177 COMMCONFIG comcfg;
2178 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
2179 COMSTAT comstat;
2180 DWORD size;
2181 DWORD err;
2182
2183 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2184 if (!s->hsend) {
6511d396 2185 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2186 goto fail;
2187 }
2188 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2189 if (!s->hrecv) {
6511d396 2190 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2191 goto fail;
2192 }
2193
2194 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
2195 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
2196 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 2197 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 2198 s->hcom = NULL;
2199 goto fail;
2200 }
2201
2202 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 2203 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 2204 goto fail;
2205 }
2206
2207 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
2208 size = sizeof(COMMCONFIG);
2209 GetDefaultCommConfig(filename, &comcfg, &size);
2210 comcfg.dcb.DCBlength = sizeof(DCB);
2211 CommConfigDialog(filename, NULL, &comcfg);
2212
2213 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 2214 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 2215 goto fail;
2216 }
2217
2218 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 2219 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 2220 goto fail;
2221 }
2222
2223 cto.ReadIntervalTimeout = MAXDWORD;
2224 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 2225 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 2226 goto fail;
2227 }
2228
2229 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2230 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2231 goto fail;
2232 }
2233 qemu_add_polling_cb(win_chr_poll, chr);
2234 return 0;
2235
2236 fail:
6f97dba0
AL		 2237 return -1;
2238}
2239
9005b2a7 2240/* Called with chr_write_lock held. */
0ec7b3e7 2241static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1)
6f97dba0 2242{
777357d7 2243 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0
AL		 2244 DWORD len, ret, size, err;
2245
2246 len = len1;
2247 ZeroMemory(&s->osend, sizeof(s->osend));
2248 s->osend.hEvent = s->hsend;
2249 while (len > 0) {
2250 if (s->hsend)
2251 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2252 else
2253 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2254 if (!ret) {
2255 err = GetLastError();
2256 if (err == ERROR_IO_PENDING) {
2257 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2258 if (ret) {
2259 buf += size;
2260 len -= size;
2261 } else {
2262 break;
2263 }
2264 } else {
2265 break;
2266 }
2267 } else {
2268 buf += size;
2269 len -= size;
2270 }
2271 }
2272 return len1 - len;
2273}
2274
0ec7b3e7 2275static int win_chr_read_poll(Chardev *chr)
6f97dba0 2276{
777357d7 2277 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0 2278
909cda12 2279 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2280 return s->max_size;
2281}
2282
0ec7b3e7 2283static void win_chr_readfile(Chardev *chr)
6f97dba0 2284{
777357d7
MAL		 2285 WinChardev *s = WIN_CHARDEV(chr);
2286
6f97dba0 2287 int ret, err;
9bd7854e 2288 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2289 DWORD size;
2290
2291 ZeroMemory(&s->orecv, sizeof(s->orecv));
2292 s->orecv.hEvent = s->hrecv;
2293 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2294 if (!ret) {
2295 err = GetLastError();
2296 if (err == ERROR_IO_PENDING) {
2297 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2298 }
2299 }
2300
2301 if (size > 0) {
fa5efccb 2302 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2303 }
2304}
2305
0ec7b3e7 2306static void win_chr_read(Chardev *chr)
6f97dba0 2307{
777357d7 2308 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0
AL		 2309
2310 if (s->len > s->max_size)
2311 s->len = s->max_size;
2312 if (s->len == 0)
2313 return;
2314
2315 win_chr_readfile(chr);
2316}
2317
2318static int win_chr_poll(void *opaque)
2319{
777357d7
MAL		 2320 Chardev *chr = CHARDEV(opaque);
2321 WinChardev *s = WIN_CHARDEV(opaque);
6f97dba0
AL		 2322 COMSTAT status;
2323 DWORD comerr;
2324
2325 ClearCommError(s->hcom, &comerr, &status);
2326 if (status.cbInQue > 0) {
2327 s->len = status.cbInQue;
2328 win_chr_read_poll(chr);
2329 win_chr_read(chr);
2330 return 1;
2331 }
2332 return 0;
2333}
2334
6f97dba0
AL		 2335static int win_chr_pipe_poll(void *opaque)
2336{
777357d7
MAL		 2337 Chardev *chr = CHARDEV(opaque);
2338 WinChardev *s = WIN_CHARDEV(opaque);
6f97dba0
AL		 2339 DWORD size;
2340
2341 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2342 if (size > 0) {
2343 s->len = size;
2344 win_chr_read_poll(chr);
2345 win_chr_read(chr);
2346 return 1;
2347 }
2348 return 0;
2349}
2350
0ec7b3e7 2351static int win_chr_pipe_init(Chardev *chr, const char *filename,
20cbe7a2 2352 Error **errp)
6f97dba0 2353{
777357d7 2354 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0
AL		 2355 OVERLAPPED ov;
2356 int ret;
2357 DWORD size;
0ff0fad2 2358 char *openname;
6f97dba0
AL		 2359
2360 s->fpipe = TRUE;
2361
2362 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2363 if (!s->hsend) {
20cbe7a2 2364 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2365 goto fail;
2366 }
2367 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2368 if (!s->hrecv) {
20cbe7a2 2369 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2370 goto fail;
2371 }
2372
0ff0fad2 2373 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2374 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2375 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2376 PIPE_WAIT,
2377 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2378 g_free(openname);
6f97dba0 2379 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2380 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2381 s->hcom = NULL;
2382 goto fail;
2383 }
2384
2385 ZeroMemory(&ov, sizeof(ov));
2386 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2387 ret = ConnectNamedPipe(s->hcom, &ov);
2388 if (ret) {
20cbe7a2 2389 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2390 goto fail;
2391 }
2392
2393 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2394 if (!ret) {
20cbe7a2 2395 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2396 if (ov.hEvent) {
2397 CloseHandle(ov.hEvent);
2398 ov.hEvent = NULL;
2399 }
2400 goto fail;
2401 }
2402
2403 if (ov.hEvent) {
2404 CloseHandle(ov.hEvent);
2405 ov.hEvent = NULL;
2406 }
2407 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2408 return 0;
2409
2410 fail:
6f97dba0
AL		 2411 return -1;
2412}
2413
2414
777357d7
MAL		 2415static void qemu_chr_open_pipe(Chardev *chr,
2416 ChardevBackend *backend,
2417 bool *be_opened,
2418 Error **errp)
6f97dba0 2419{
32bafa8f 2420 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2421 const char *filename = opts->device;
6f97dba0 2422
20cbe7a2 2423 if (win_chr_pipe_init(chr, filename, errp) < 0) {
777357d7 2424 return;
6f97dba0 2425 }
6f97dba0
AL		 2426}
2427
777357d7 2428static void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
6f97dba0 2429{
777357d7 2430 WinChardev *s = WIN_CHARDEV(chr);
6f97dba0 2431
c266d94e 2432 s->skip_free = true;
6f97dba0 2433 s->hcom = fd_out;
6f97dba0
AL		 2434}
2435
777357d7 2436static void char_win_class_init(ObjectClass *oc, void *data)
6f97dba0 2437{
777357d7
MAL		 2438 ChardevClass *cc = CHARDEV_CLASS(oc);
2439
2440 cc->chr_write = win_chr_write;
6f97dba0
AL		 2441}
2442
777357d7
MAL		 2443static const TypeInfo char_win_type_info = {
2444 .name = TYPE_CHARDEV_WIN,
2445 .parent = TYPE_CHARDEV,
0ec7b3e7 2446 .instance_size = sizeof(WinChardev),
53a5736f 2447 .instance_finalize = char_win_finalize,
777357d7
MAL		 2448 .class_init = char_win_class_init,
2449 .abstract = true,
2450};
2451
2452static void qemu_chr_open_win_con(Chardev *chr,
2453 ChardevBackend *backend,
2454 bool *be_opened,
2455 Error **errp)
2456{
2457 qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE));
2458}
2459
2460static const CharDriver console_driver = {
b68e956a 2461 .kind = CHARDEV_BACKEND_KIND_CONSOLE,
777357d7
MAL		 2462};
2463
2464static void char_console_class_init(ObjectClass *oc, void *data)
2465{
2466 ChardevClass *cc = CHARDEV_CLASS(oc);
2467
2468 cc->open = qemu_chr_open_win_con;
777357d7
MAL		 2469}
2470
2471static const TypeInfo char_console_type_info = {
2472 .name = TYPE_CHARDEV_CONSOLE,
2473 .parent = TYPE_CHARDEV_WIN,
2474 .class_init = char_console_class_init,
b68e956a
MAL		 2475};
2476
0ec7b3e7 2477static int win_stdio_write(Chardev *chr, const uint8_t *buf, int len)
db418a0a
FC		 2478{
2479 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2480 DWORD dwSize;
2481 int len1;
2482
2483 len1 = len;
2484
2485 while (len1 > 0) {
2486 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2487 break;
2488 }
2489 buf += dwSize;
2490 len1 -= dwSize;
2491 }
2492
2493 return len - len1;
2494}
2495
2496static void win_stdio_wait_func(void *opaque)
2497{
777357d7
MAL		 2498 Chardev *chr = CHARDEV(opaque);
2499 WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
db418a0a
FC		 2500 INPUT_RECORD buf[4];
2501 int ret;
2502 DWORD dwSize;
2503 int i;
2504
dff7424d 2505 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2506
2507 if (!ret) {
2508 /* Avoid error storm */
2509 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2510 return;
2511 }
2512
2513 for (i = 0; i < dwSize; i++) {
2514 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2515
2516 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2517 int j;
2518 if (kev->uChar.AsciiChar != 0) {
2519 for (j = 0; j < kev->wRepeatCount; j++) {
2520 if (qemu_chr_be_can_write(chr)) {
2521 uint8_t c = kev->uChar.AsciiChar;
2522 qemu_chr_be_write(chr, &c, 1);
2523 }
2524 }
2525 }
2526 }
2527 }
2528}
2529
2530static DWORD WINAPI win_stdio_thread(LPVOID param)
2531{
777357d7 2532 WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param);
db418a0a
FC		 2533 int ret;
2534 DWORD dwSize;
2535
2536 while (1) {
2537
2538 /* Wait for one byte */
2539 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2540
2541 /* Exit in case of error, continue if nothing read */
2542 if (!ret) {
2543 break;
2544 }
2545 if (!dwSize) {
2546 continue;
2547 }
2548
2549 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2550 if (stdio->win_stdio_buf == '\r') {
2551 continue;
2552 }
2553
2554 /* Signal the main thread and wait until the byte was eaten */
2555 if (!SetEvent(stdio->hInputReadyEvent)) {
2556 break;
2557 }
2558 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2559 != WAIT_OBJECT_0) {
2560 break;
2561 }
2562 }
2563
2564 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2565 return 0;
2566}
2567
2568static void win_stdio_thread_wait_func(void *opaque)
2569{
777357d7
MAL		 2570 Chardev *chr = CHARDEV(opaque);
2571 WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
db418a0a
FC		 2572
2573 if (qemu_chr_be_can_write(chr)) {
2574 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2575 }
2576
2577 SetEvent(stdio->hInputDoneEvent);
2578}
2579
0ec7b3e7 2580static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo)
db418a0a 2581{
777357d7 2582 WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
db418a0a
FC		 2583 DWORD dwMode = 0;
2584
2585 GetConsoleMode(stdio->hStdIn, &dwMode);
2586
2587 if (echo) {
2588 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2589 } else {
2590 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2591 }
2592}
2593
1566b0c4 2594static void char_win_stdio_finalize(Object *obj)
db418a0a 2595{
1566b0c4 2596 WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
db418a0a
FC		 2597
2598 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2599 CloseHandle(stdio->hInputReadyEvent);
2600 }
2601 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2602 CloseHandle(stdio->hInputDoneEvent);
2603 }
2604 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2605 TerminateThread(stdio->hInputThread, 0);
2606 }
db418a0a
FC		 2607}
2608
777357d7
MAL		 2609static const TypeInfo char_win_stdio_type_info = {
2610 .name = TYPE_CHARDEV_WIN_STDIO,
2611 .parent = TYPE_CHARDEV,
2612 .instance_size = sizeof(WinStdioChardev),
1566b0c4 2613 .instance_finalize = char_win_stdio_finalize,
777357d7
MAL		 2614 .abstract = true,
2615};
2616
2617static void qemu_chr_open_stdio(Chardev *chr,
2618 ChardevBackend *backend,
2619 bool *be_opened,
2620 Error **errp)
db418a0a 2621{
777357d7 2622 WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
db418a0a
FC		 2623 DWORD dwMode;
2624 int is_console = 0;
db418a0a
FC		 2625
2626 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2627 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d 2628 error_setg(errp, "cannot open stdio: invalid handle");
777357d7 2629 return;
db418a0a
FC		 2630 }
2631
2632 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2633
ed7a1540
AL		 2634 if (is_console) {
2635 if (qemu_add_wait_object(stdio->hStdIn,
2636 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2637 error_setg(errp, "qemu_add_wait_object: failed");
2638 goto err1;
ed7a1540
AL		 2639 }
2640 } else {
2641 DWORD dwId;
2642
2643 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2644 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2645 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2646 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2647 error_setg(errp, "cannot create event");
2648 goto err2;
ed7a1540
AL		 2649 }
2650 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2651 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2652 error_setg(errp, "qemu_add_wait_object: failed");
2653 goto err2;
2654 }
2655 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2656 chr, 0, &dwId);
2657
2658 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2659 error_setg(errp, "cannot create stdio thread");
2660 goto err3;
db418a0a
FC		 2661 }
2662 }
2663
2664 dwMode |= ENABLE_LINE_INPUT;
2665
ed7a1540 2666 if (is_console) {
db418a0a
FC		 2667 /* set the terminal in raw mode */
2668 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2669 dwMode |= ENABLE_PROCESSED_INPUT;
2670 }
2671
2672 SetConsoleMode(stdio->hStdIn, dwMode);
2673
5345fdb4 2674 qemu_chr_set_echo_win_stdio(chr, false);
db418a0a 2675
777357d7 2676 return;
8c84b25d
PB		 2677
2678err3:
2679 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2680err2:
2681 CloseHandle(stdio->hInputReadyEvent);
2682 CloseHandle(stdio->hInputDoneEvent);
2683err1:
2684 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
db418a0a 2685}
6f97dba0
AL		 2686#endif /* !_WIN32 */
2687
2688/***********************************************************/
2689/* UDP Net console */
2690
2691typedef struct {
0ec7b3e7 2692 Chardev parent;
9894dc0c 2693 QIOChannel *ioc;
9bd7854e 2694 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2695 int bufcnt;
2696 int bufptr;
2697 int max_size;
1876ed04 2698} UdpChardev;
6f97dba0 2699
777357d7
MAL		 2700#define UDP_CHARDEV(obj) OBJECT_CHECK(UdpChardev, (obj), TYPE_CHARDEV_UDP)
2701
9005b2a7 2702/* Called with chr_write_lock held. */
0ec7b3e7 2703static int udp_chr_write(Chardev *chr, const uint8_t *buf, int len)
6f97dba0 2704{
777357d7 2705 UdpChardev *s = UDP_CHARDEV(chr);
76a9644b 2706
9894dc0c
DB		 2707 return qio_channel_write(
2708 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2709}
2710
2711static int udp_chr_read_poll(void *opaque)
2712{
777357d7
MAL		 2713 Chardev *chr = CHARDEV(opaque);
2714 UdpChardev *s = UDP_CHARDEV(opaque);
6f97dba0 2715
909cda12 2716 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2717
2718 /* If there were any stray characters in the queue process them
2719 * first
2720 */
2721 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2722 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2723 s->bufptr++;
909cda12 2724 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2725 }
2726 return s->max_size;
2727}
2728
9894dc0c 2729static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0 2730{
777357d7
MAL		 2731 Chardev *chr = CHARDEV(opaque);
2732 UdpChardev *s = UDP_CHARDEV(opaque);
9894dc0c 2733 ssize_t ret;
6f97dba0 2734
cdbf6e16
PB		 2735 if (s->max_size == 0) {
2736 return TRUE;
2737 }
9894dc0c
DB		 2738 ret = qio_channel_read(
2739 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2740 if (ret <= 0) {
26da70c7 2741 remove_fd_in_watch(chr);
76a9644b
AL		 2742 return FALSE;
2743 }
9894dc0c 2744 s->bufcnt = ret;
6f97dba0
AL		 2745
2746 s->bufptr = 0;
2747 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2748 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2749 s->bufptr++;
909cda12 2750 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2751 }
76a9644b
AL		 2752
2753 return TRUE;
6f97dba0
AL		 2754}
2755
0ec7b3e7 2756static void udp_chr_update_read_handler(Chardev *chr,
a4afa548 2757 GMainContext *context)
6f97dba0 2758{
777357d7 2759 UdpChardev *s = UDP_CHARDEV(chr);
6f97dba0 2760
26da70c7 2761 remove_fd_in_watch(chr);
9894dc0c 2762 if (s->ioc) {
e93a68e1 2763 chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
9894dc0c 2764 udp_chr_read_poll,
e92aa36a
ZC		 2765 udp_chr_read, chr,
2766 context);
6f97dba0
AL		 2767 }
2768}
2769
819aad23 2770static void char_udp_finalize(Object *obj)
819f56b7 2771{
819aad23
MAL		 2772 Chardev *chr = CHARDEV(obj);
2773 UdpChardev *s = UDP_CHARDEV(obj);
26da70c7
AS		 2774
2775 remove_fd_in_watch(chr);
9894dc0c
DB		 2776 if (s->ioc) {
2777 object_unref(OBJECT(s->ioc));
819f56b7 2778 }
a425d23f 2779 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2780}
2781
6f97dba0
AL		 2782/***********************************************************/
2783/* TCP Net console */
2784
2785typedef struct {
0ec7b3e7 2786 Chardev parent;
a8fb5427
DB		 2787 QIOChannel *ioc; /* Client I/O channel */
2788 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2789 QIOChannelSocket *listen_ioc;
7ba9addc 2790 guint listen_tag;
a8fb5427 2791 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2792 int connected;
2793 int max_size;
2794 int do_telnetopt;
2795 int do_nodelay;
2796 int is_unix;
c76bf6bb 2797 int *read_msgfds;
9894dc0c 2798 size_t read_msgfds_num;
d39aac7a 2799 int *write_msgfds;
9894dc0c 2800 size_t write_msgfds_num;
cfb429cb
CM		 2801
2802 SocketAddress *addr;
2803 bool is_listen;
2804 bool is_telnet;
5dd1f02b
CM		 2805
2806 guint reconnect_timer;
2807 int64_t reconnect_time;
5008e5b7 2808 bool connect_err_reported;
1876ed04 2809} SocketChardev;
6f97dba0 2810
777357d7
MAL		 2811#define SOCKET_CHARDEV(obj) \
2812 OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET)
2813
5dd1f02b
CM		 2814static gboolean socket_reconnect_timeout(gpointer opaque);
2815
0ec7b3e7 2816static void qemu_chr_socket_restart_timer(Chardev *chr)
5dd1f02b 2817{
777357d7 2818 SocketChardev *s = SOCKET_CHARDEV(chr);
e93a68e1 2819 char *name;
41ac54b2 2820
5dd1f02b
CM		 2821 assert(s->connected == 0);
2822 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2823 socket_reconnect_timeout, chr);
e93a68e1
DB		 2824 name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label);
2825 g_source_set_name_by_id(s->reconnect_timer, name);
2826 g_free(name);
5dd1f02b
CM		 2827}
2828
0ec7b3e7 2829static void check_report_connect_error(Chardev *chr,
5008e5b7
CM		 2830 Error *err)
2831{
777357d7 2832 SocketChardev *s = SOCKET_CHARDEV(chr);
5008e5b7
CM		 2833
2834 if (!s->connect_err_reported) {
2835 error_report("Unable to connect character device %s: %s",
2836 chr->label, error_get_pretty(err));
2837 s->connect_err_reported = true;
2838 }
2839 qemu_chr_socket_restart_timer(chr);
2840}
2841
9894dc0c
DB		 2842static gboolean tcp_chr_accept(QIOChannel *chan,
2843 GIOCondition cond,
2844 void *opaque);
d39aac7a 2845
9005b2a7 2846/* Called with chr_write_lock held. */
0ec7b3e7 2847static int tcp_chr_write(Chardev *chr, const uint8_t *buf, int len)
6f97dba0 2848{
777357d7 2849 SocketChardev *s = SOCKET_CHARDEV(chr);
41ac54b2 2850
6f97dba0 2851 if (s->connected) {
9894dc0c
DB		 2852 int ret = io_channel_send_full(s->ioc, buf, len,
2853 s->write_msgfds,
2854 s->write_msgfds_num);
2855
2856 /* free the written msgfds, no matter what */
2857 if (s->write_msgfds_num) {
2858 g_free(s->write_msgfds);
2859 s->write_msgfds = 0;
2860 s->write_msgfds_num = 0;
d39aac7a 2861 }
9894dc0c
DB		 2862
2863 return ret;
455aa1e0 2864 } else {
6db0fdce 2865 /* XXX: indicate an error ? */
455aa1e0 2866 return len;
6f97dba0
AL		 2867 }
2868}
2869
2870static int tcp_chr_read_poll(void *opaque)
2871{
777357d7
MAL		 2872 Chardev *chr = CHARDEV(opaque);
2873 SocketChardev *s = SOCKET_CHARDEV(opaque);
6f97dba0
AL		 2874 if (!s->connected)
2875 return 0;
909cda12 2876 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2877 return s->max_size;
2878}
2879
2880#define IAC 255
2881#define IAC_BREAK 243
0ec7b3e7 2882static void tcp_chr_process_IAC_bytes(Chardev *chr,
1876ed04 2883 SocketChardev *s,
6f97dba0
AL		 2884 uint8_t *buf, int *size)
2885{
2886 /* Handle any telnet client's basic IAC options to satisfy char by
2887 * char mode with no echo. All IAC options will be removed from
2888 * the buf and the do_telnetopt variable will be used to track the
2889 * state of the width of the IAC information.
2890 *
2891 * IAC commands come in sets of 3 bytes with the exception of the
2892 * "IAC BREAK" command and the double IAC.
2893 */
2894
2895 int i;
2896 int j = 0;
2897
2898 for (i = 0; i < *size; i++) {
2899 if (s->do_telnetopt > 1) {
2900 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2901 /* Double IAC means send an IAC */
2902 if (j != i)
2903 buf[j] = buf[i];
2904 j++;
2905 s->do_telnetopt = 1;
2906 } else {
2907 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2908 /* Handle IAC break commands by sending a serial break */
a425d23f 2909 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2910 s->do_telnetopt++;
2911 }
2912 s->do_telnetopt++;
2913 }
2914 if (s->do_telnetopt >= 4) {
2915 s->do_telnetopt = 1;
2916 }
2917 } else {
2918 if ((unsigned char)buf[i] == IAC) {
2919 s->do_telnetopt = 2;
2920 } else {
2921 if (j != i)
2922 buf[j] = buf[i];
2923 j++;
2924 }
2925 }
2926 }
2927 *size = j;
2928}
2929
0ec7b3e7 2930static int tcp_get_msgfds(Chardev *chr, int *fds, int num)
7d174059 2931{
777357d7 2932 SocketChardev *s = SOCKET_CHARDEV(chr);
41ac54b2 2933
c76bf6bb
NN		 2934 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2935
c4095726
MT		 2936 assert(num <= TCP_MAX_FDS);
2937
c76bf6bb 2938 if (to_copy) {
d2fc39b4
SH		 2939 int i;
2940
c76bf6bb
NN		 2941 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2942
d2fc39b4
SH		 2943 /* Close unused fds */
2944 for (i = to_copy; i < s->read_msgfds_num; i++) {
2945 close(s->read_msgfds[i]);
2946 }
2947
c76bf6bb
NN		 2948 g_free(s->read_msgfds);
2949 s->read_msgfds = 0;
2950 s->read_msgfds_num = 0;
2951 }
2952
2953 return to_copy;
7d174059
MM		 2954}
2955
0ec7b3e7 2956static int tcp_set_msgfds(Chardev *chr, int *fds, int num)
d39aac7a 2957{
777357d7 2958 SocketChardev *s = SOCKET_CHARDEV(chr);
d39aac7a
NN		 2959
2960 /* clear old pending fd array */
ef1e1e07 2961 g_free(s->write_msgfds);
869a58af 2962 s->write_msgfds = NULL;
5b498459 2963 s->write_msgfds_num = 0;
d39aac7a 2964
5c7eaabf
MAL		 2965 if (!s->connected ||
2966 !qio_channel_has_feature(s->ioc,
2967 QIO_CHANNEL_FEATURE_FD_PASS)) {
2968 return -1;
2969 }
2970
d39aac7a 2971 if (num) {
2d528d45 2972 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2973 memcpy(s->write_msgfds, fds, num * sizeof(int));
2974 }
2975
2976 s->write_msgfds_num = num;
2977
2978 return 0;
2979}
2980
0ec7b3e7 2981static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len)
7d174059 2982{
777357d7 2983 SocketChardev *s = SOCKET_CHARDEV(chr);
9894dc0c
DB		 2984 struct iovec iov = { .iov_base = buf, .iov_len = len };
2985 int ret;
2986 size_t i;
2987 int *msgfds = NULL;
2988 size_t msgfds_num = 0;
2989
2990 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2991 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2992 &msgfds, &msgfds_num,
2993 NULL);
2994 } else {
2995 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2996 NULL, NULL,
2997 NULL);
2998 }
7d174059 2999
b6572b4f
MAL		 3000 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3001 errno = EAGAIN;
3002 ret = -1;
3003 } else if (ret == -1) {
3004 errno = EIO;
3005 }
3006
9894dc0c 3007 if (msgfds_num) {
c76bf6bb
NN		 3008 /* close and clean read_msgfds */
3009 for (i = 0; i < s->read_msgfds_num; i++) {
3010 close(s->read_msgfds[i]);
3011 }
9b938c72 3012
c76bf6bb
NN		 3013 if (s->read_msgfds_num) {
3014 g_free(s->read_msgfds);
3015 }
3016
9894dc0c
DB		 3017 s->read_msgfds = msgfds;
3018 s->read_msgfds_num = msgfds_num;
7d174059 3019 }
7d174059 3020
9894dc0c
DB		 3021 for (i = 0; i < s->read_msgfds_num; i++) {
3022 int fd = s->read_msgfds[i];
3023 if (fd < 0) {
3024 continue;
3025 }
9977c894 3026
9894dc0c
DB		 3027 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
3028 qemu_set_block(fd);
7d174059 3029
9894dc0c
DB		 3030#ifndef MSG_CMSG_CLOEXEC
3031 qemu_set_cloexec(fd);
06138651 3032#endif
06138651 3033 }
9977c894 3034
7d174059 3035 return ret;
9977c894 3036}
9977c894 3037
0ec7b3e7 3038static GSource *tcp_chr_add_watch(Chardev *chr, GIOCondition cond)
d3cc5bc4 3039{
777357d7 3040 SocketChardev *s = SOCKET_CHARDEV(chr);
9894dc0c 3041 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 3042}
3043
0ec7b3e7 3044static void tcp_chr_free_connection(Chardev *chr)
7b0bfdf5 3045{
777357d7 3046 SocketChardev *s = SOCKET_CHARDEV(chr);
5b498459 3047 int i;
7b0bfdf5 3048
342f7a9d
MAL		 3049 if (!s->connected) {
3050 return;
3051 }
3052
5b498459
MAL		 3053 if (s->read_msgfds_num) {
3054 for (i = 0; i < s->read_msgfds_num; i++) {
3055 close(s->read_msgfds[i]);
3056 }
3057 g_free(s->read_msgfds);
3058 s->read_msgfds = NULL;
3059 s->read_msgfds_num = 0;
7b0bfdf5 3060 }
5b498459 3061
6167ebbd 3062 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 3063 remove_fd_in_watch(chr);
a8fb5427
DB		 3064 object_unref(OBJECT(s->sioc));
3065 s->sioc = NULL;
9894dc0c
DB		 3066 object_unref(OBJECT(s->ioc));
3067 s->ioc = NULL;
0ff0fad2 3068 g_free(chr->filename);
5b498459
MAL		 3069 chr->filename = NULL;
3070 s->connected = 0;
3071}
3072
0ec7b3e7 3073static void tcp_chr_disconnect(Chardev *chr)
5b498459 3074{
777357d7 3075 SocketChardev *s = SOCKET_CHARDEV(chr);
5b498459
MAL		 3076
3077 if (!s->connected) {
3078 return;
3079 }
3080
3081 tcp_chr_free_connection(chr);
3082
3083 if (s->listen_ioc) {
3084 s->listen_tag = qio_channel_add_watch(
3085 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
3086 }
0ff0fad2
DB		 3087 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
3088 s->is_listen, s->is_telnet);
7b0bfdf5 3089 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 3090 if (s->reconnect_time) {
3091 qemu_chr_socket_restart_timer(chr);
3092 }
7b0bfdf5
NN		 3093}
3094
9894dc0c 3095static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0 3096{
777357d7
MAL		 3097 Chardev *chr = CHARDEV(opaque);
3098 SocketChardev *s = SOCKET_CHARDEV(opaque);
9bd7854e 3099 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 3100 int len, size;
3101
2ea5a7af 3102 if (!s->connected || s->max_size <= 0) {
cdbf6e16 3103 return TRUE;
2ea5a7af 3104 }
6f97dba0
AL		 3105 len = sizeof(buf);
3106 if (len > s->max_size)
3107 len = s->max_size;
9977c894 3108 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 3109 if (size == 0 || size == -1) {
6f97dba0 3110 /* connection closed */
7b0bfdf5 3111 tcp_chr_disconnect(chr);
6f97dba0
AL		 3112 } else if (size > 0) {
3113 if (s->do_telnetopt)
3114 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
3115 if (size > 0)
fa5efccb 3116 qemu_chr_be_write(chr, buf, size);
6f97dba0 3117 }
2ea5a7af
AL		 3118
3119 return TRUE;
6f97dba0
AL		 3120}
3121
0ec7b3e7 3122static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len)
7b0bfdf5 3123{
777357d7 3124 SocketChardev *s = SOCKET_CHARDEV(chr);
7b0bfdf5
NN		 3125 int size;
3126
3127 if (!s->connected) {
3128 return 0;
3129 }
3130
3131 size = tcp_chr_recv(chr, (void *) buf, len);
3132 if (size == 0) {
3133 /* connection closed */
3134 tcp_chr_disconnect(chr);
3135 }
3136
3137 return size;
3138}
3139
6f97dba0
AL		 3140static void tcp_chr_connect(void *opaque)
3141{
777357d7
MAL		 3142 Chardev *chr = CHARDEV(opaque);
3143 SocketChardev *s = SOCKET_CHARDEV(opaque);
16cc4ffe 3144
0ff0fad2 3145 g_free(chr->filename);
a8fb5427
DB		 3146 chr->filename = sockaddr_to_str(
3147 &s->sioc->localAddr, s->sioc->localAddrLen,
3148 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
3149 s->is_listen, s->is_telnet);
6f97dba0
AL		 3150
3151 s->connected = 1;
9894dc0c 3152 if (s->ioc) {
e93a68e1 3153 chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
9894dc0c 3154 tcp_chr_read_poll,
e92aa36a
ZC		 3155 tcp_chr_read,
3156 chr, NULL);
bbdd2ad0 3157 }
fee204fd 3158 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 3159}
3160
0ec7b3e7 3161static void tcp_chr_update_read_handler(Chardev *chr,
a4afa548 3162 GMainContext *context)
ac1b84dd 3163{
777357d7 3164 SocketChardev *s = SOCKET_CHARDEV(chr);
ac1b84dd 3165
1e94f23d
DB		 3166 if (!s->connected) {
3167 return;
3168 }
3169
ac1b84dd 3170 remove_fd_in_watch(chr);
9894dc0c 3171 if (s->ioc) {
e93a68e1 3172 chr->fd_in_tag = io_add_watch_poll(chr, s->ioc,
9894dc0c 3173 tcp_chr_read_poll,
e92aa36a
ZC		 3174 tcp_chr_read, chr,
3175 context);
ac1b84dd
GH		 3176 }
3177}
3178
f2001a7e 3179typedef struct {
0ec7b3e7 3180 Chardev *chr;
f2001a7e
DB		 3181 char buf[12];
3182 size_t buflen;
3183} TCPCharDriverTelnetInit;
3184
3185static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
3186 GIOCondition cond G_GNUC_UNUSED,
3187 gpointer user_data)
6f97dba0 3188{
f2001a7e
DB		 3189 TCPCharDriverTelnetInit *init = user_data;
3190 ssize_t ret;
3191
3192 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3193 if (ret < 0) {
3194 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3195 ret = 0;
3196 } else {
3197 tcp_chr_disconnect(init->chr);
3198 return FALSE;
3199 }
3200 }
3201 init->buflen -= ret;
3202
3203 if (init->buflen == 0) {
3204 tcp_chr_connect(init->chr);
3205 return FALSE;
3206 }
3207
3208 memmove(init->buf, init->buf + ret, init->buflen);
3209
3210 return TRUE;
3211}
3212
0ec7b3e7 3213static void tcp_chr_telnet_init(Chardev *chr)
f2001a7e 3214{
777357d7 3215 SocketChardev *s = SOCKET_CHARDEV(chr);
f2001a7e
DB		 3216 TCPCharDriverTelnetInit *init =
3217 g_new0(TCPCharDriverTelnetInit, 1);
3218 size_t n = 0;
3219
3220 init->chr = chr;
3221 init->buflen = 12;
3222
3223#define IACSET(x, a, b, c) \
3224 do { \
3225 x[n++] = a; \
3226 x[n++] = b; \
3227 x[n++] = c; \
3228 } while (0)
3229
3230 /* Prep the telnet negotion to put telnet in binary,
3231 * no echo, single char mode */
3232 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3233 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3234 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3235 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3236
3237#undef IACSET
3238
3239 qio_channel_add_watch(
3240 s->ioc, G_IO_OUT,
3241 tcp_chr_telnet_init_io,
3242 init, NULL);
6f97dba0
AL		 3243}
3244
a8fb5427 3245
60e705c5 3246static void tcp_chr_tls_handshake(QIOTask *task,
a8fb5427
DB		 3247 gpointer user_data)
3248{
0ec7b3e7 3249 Chardev *chr = user_data;
1876ed04 3250 SocketChardev *s = user_data;
a8fb5427 3251
60e705c5 3252 if (qio_task_propagate_error(task, NULL)) {
a8fb5427
DB		 3253 tcp_chr_disconnect(chr);
3254 } else {
3255 if (s->do_telnetopt) {
3256 tcp_chr_telnet_init(chr);
3257 } else {
3258 tcp_chr_connect(chr);
3259 }
3260 }
3261}
3262
3263
0ec7b3e7 3264static void tcp_chr_tls_init(Chardev *chr)
a8fb5427 3265{
777357d7 3266 SocketChardev *s = SOCKET_CHARDEV(chr);
a8fb5427
DB		 3267 QIOChannelTLS *tioc;
3268 Error *err = NULL;
e93a68e1 3269 gchar *name;
a8fb5427
DB		 3270
3271 if (s->is_listen) {
3272 tioc = qio_channel_tls_new_server(
3273 s->ioc, s->tls_creds,
3274 NULL, /* XXX Use an ACL */
3275 &err);
3276 } else {
3277 tioc = qio_channel_tls_new_client(
3278 s->ioc, s->tls_creds,
32bafa8f 3279 s->addr->u.inet.data->host,
a8fb5427
DB		 3280 &err);
3281 }
3282 if (tioc == NULL) {
3283 error_free(err);
3284 tcp_chr_disconnect(chr);
660a2d83 3285 return;
a8fb5427 3286 }
e93a68e1
DB		 3287 name = g_strdup_printf("chardev-tls-%s-%s",
3288 s->is_listen ? "server" : "client",
3289 chr->label);
3290 qio_channel_set_name(QIO_CHANNEL(tioc), name);
3291 g_free(name);
a8fb5427
DB		 3292 object_unref(OBJECT(s->ioc));
3293 s->ioc = QIO_CHANNEL(tioc);
3294
3295 qio_channel_tls_handshake(tioc,
3296 tcp_chr_tls_handshake,
3297 chr,
3298 NULL);
3299}
3300
3301
0ec7b3e7 3302static void tcp_chr_set_client_ioc_name(Chardev *chr,
e93a68e1
DB		 3303 QIOChannelSocket *sioc)
3304{
777357d7 3305 SocketChardev *s = SOCKET_CHARDEV(chr);
e93a68e1
DB		 3306 char *name;
3307 name = g_strdup_printf("chardev-tcp-%s-%s",
3308 s->is_listen ? "server" : "client",
3309 chr->label);
3310 qio_channel_set_name(QIO_CHANNEL(sioc), name);
3311 g_free(name);
3312
3313}
3314
0ec7b3e7 3315static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc)
13661089 3316{
777357d7 3317 SocketChardev *s = SOCKET_CHARDEV(chr);
41ac54b2 3318
9894dc0c 3319 if (s->ioc != NULL) {
13661089 3320 return -1;
9894dc0c 3321 }
13661089 3322
9894dc0c
DB		 3323 s->ioc = QIO_CHANNEL(sioc);
3324 object_ref(OBJECT(sioc));
a8fb5427
DB		 3325 s->sioc = sioc;
3326 object_ref(OBJECT(sioc));
9894dc0c 3327
64c800f8
DB		 3328 qio_channel_set_blocking(s->ioc, false, NULL);
3329
9894dc0c
DB		 3330 if (s->do_nodelay) {
3331 qio_channel_set_delay(s->ioc, false);
3332 }
910b6368
PB		 3333 if (s->listen_tag) {
3334 g_source_remove(s->listen_tag);
3335 s->listen_tag = 0;
3336 }
f2001a7e 3337
a8fb5427
DB		 3338 if (s->tls_creds) {
3339 tcp_chr_tls_init(chr);
f2001a7e 3340 } else {
a8fb5427
DB		 3341 if (s->do_telnetopt) {
3342 tcp_chr_telnet_init(chr);
3343 } else {
3344 tcp_chr_connect(chr);
3345 }
f2001a7e 3346 }
13661089
DB		 3347
3348 return 0;
3349}
3350
9894dc0c 3351
0ec7b3e7 3352static int tcp_chr_add_client(Chardev *chr, int fd)
9894dc0c
DB		 3353{
3354 int ret;
3355 QIOChannelSocket *sioc;
3356
3357 sioc = qio_channel_socket_new_fd(fd, NULL);
3358 if (!sioc) {
3359 return -1;
3360 }
e93a68e1 3361 tcp_chr_set_client_ioc_name(chr, sioc);
9894dc0c
DB		 3362 ret = tcp_chr_new_client(chr, sioc);
3363 object_unref(OBJECT(sioc));
3364 return ret;
3365}
3366
3367static gboolean tcp_chr_accept(QIOChannel *channel,
3368 GIOCondition cond,
3369 void *opaque)
6f97dba0 3370{
777357d7 3371 Chardev *chr = CHARDEV(opaque);
9894dc0c 3372 QIOChannelSocket *sioc;
6f97dba0 3373
9894dc0c
DB		 3374 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3375 NULL);
3376 if (!sioc) {
3377 return TRUE;
6f97dba0 3378 }
9894dc0c 3379
9894dc0c
DB		 3380 tcp_chr_new_client(chr, sioc);
3381
3382 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3383
3384 return TRUE;
6f97dba0
AL		 3385}
3386
0ec7b3e7 3387static int tcp_chr_wait_connected(Chardev *chr, Error **errp)
d7a04fd7 3388{
777357d7 3389 SocketChardev *s = SOCKET_CHARDEV(chr);
d7a04fd7
MAL		 3390 QIOChannelSocket *sioc;
3391
1dc8a669
MAL		 3392 /* It can't wait on s->connected, since it is set asynchronously
3393 * in TLS and telnet cases, only wait for an accepted socket */
3394 while (!s->ioc) {
d7a04fd7 3395 if (s->is_listen) {
776a32a0
MAL		 3396 error_report("QEMU waiting for connection on: %s",
3397 chr->filename);
d7a04fd7
MAL		 3398 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3399 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3400 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3401 } else {
3402 sioc = qio_channel_socket_new();
e93a68e1 3403 tcp_chr_set_client_ioc_name(chr, sioc);
d7a04fd7
MAL		 3404 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3405 object_unref(OBJECT(sioc));
3406 return -1;
3407 }
3408 tcp_chr_new_client(chr, sioc);
3409 object_unref(OBJECT(sioc));
3410 }
3411 }
3412
3413 return 0;
3414}
3415
0ec7b3e7 3416static int qemu_chr_wait_connected(Chardev *chr, Error **errp)
6b6723c3 3417{
777357d7
MAL		 3418 ChardevClass *cc = CHARDEV_GET_CLASS(chr);
3419
3420 if (cc->chr_wait_connected) {
3421 return cc->chr_wait_connected(chr, errp);
6b6723c3
MAL		 3422 }
3423
3424 return 0;
3425}
3426
5345fdb4
MAL		 3427int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
3428{
fa394ed6
MAL		 3429 if (!be->chr) {
3430 error_setg(errp, "missing associated backend");
3431 return -1;
3432 }
3433
5345fdb4
MAL		 3434 return qemu_chr_wait_connected(be->chr, errp);
3435}
3436
2c3a5dcb 3437static void char_socket_finalize(Object *obj)
6f97dba0 3438{
2c3a5dcb
MAL		 3439 Chardev *chr = CHARDEV(obj);
3440 SocketChardev *s = SOCKET_CHARDEV(obj);
5b498459
MAL		 3441
3442 tcp_chr_free_connection(chr);
cfb429cb 3443
5dd1f02b
CM		 3444 if (s->reconnect_timer) {
3445 g_source_remove(s->reconnect_timer);
3446 s->reconnect_timer = 0;
3447 }
cfb429cb 3448 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3449 if (s->listen_tag) {
3450 g_source_remove(s->listen_tag);
3451 s->listen_tag = 0;
3452 }
3453 if (s->listen_ioc) {
3454 object_unref(OBJECT(s->listen_ioc));
819f56b7 3455 }
a8fb5427
DB		 3456 if (s->tls_creds) {
3457 object_unref(OBJECT(s->tls_creds));
3458 }
41ac54b2 3459
a425d23f 3460 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3461}
3462
43ded1a0 3463
60e705c5 3464static void qemu_chr_socket_connected(QIOTask *task, void *opaque)
5dd1f02b 3465{
60e705c5 3466 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
777357d7
MAL		 3467 Chardev *chr = CHARDEV(opaque);
3468 SocketChardev *s = SOCKET_CHARDEV(chr);
60e705c5 3469 Error *err = NULL;
5dd1f02b 3470
60e705c5 3471 if (qio_task_propagate_error(task, &err)) {
5008e5b7 3472 check_report_connect_error(chr, err);
60e705c5
DB		 3473 error_free(err);
3474 goto cleanup;
5dd1f02b
CM		 3475 }
3476
5008e5b7 3477 s->connect_err_reported = false;
f50dfe45 3478 tcp_chr_new_client(chr, sioc);
60e705c5
DB		 3479
3480 cleanup:
f50dfe45 3481 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3482}
3483
f6bd5d6e 3484
51767e7c 3485/*********************************************************/
3949e594 3486/* Ring buffer chardev */
51767e7c
LL		 3487
3488typedef struct {
0ec7b3e7 3489 Chardev parent;
51767e7c
LL		 3490 size_t size;
3491 size_t prod;
3492 size_t cons;
3493 uint8_t *cbuf;
0ec7b3e7 3494} RingBufChardev;
51767e7c 3495
777357d7
MAL		 3496#define RINGBUF_CHARDEV(obj) \
3497 OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF)
3498
0ec7b3e7 3499static size_t ringbuf_count(const Chardev *chr)
51767e7c 3500{
777357d7 3501 const RingBufChardev *d = RINGBUF_CHARDEV(chr);
51767e7c 3502
5c230105 3503 return d->prod - d->cons;
51767e7c
LL		 3504}
3505
9005b2a7 3506/* Called with chr_write_lock held. */
0ec7b3e7 3507static int ringbuf_chr_write(Chardev *chr, const uint8_t *buf, int len)
51767e7c 3508{
777357d7 3509 RingBufChardev *d = RINGBUF_CHARDEV(chr);
51767e7c
LL		 3510 int i;
3511
3512 if (!buf || (len < 0)) {
3513 return -1;
3514 }
3515
3516 for (i = 0; i < len; i++ ) {
5c230105
MA		 3517 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3518 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3519 d->cons = d->prod - d->size;
3520 }
3521 }
3522
5c936a83 3523 return len;
51767e7c
LL		 3524}
3525
0ec7b3e7 3526static int ringbuf_chr_read(Chardev *chr, uint8_t *buf, int len)
51767e7c 3527{
777357d7 3528 RingBufChardev *d = RINGBUF_CHARDEV(chr);
51767e7c
LL		 3529 int i;
3530
9005b2a7 3531 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3532 for (i = 0; i < len && d->cons != d->prod; i++) {
3533 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3534 }
9005b2a7 3535 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3536
3537 return i;
3538}
3539
9fa2f7a4 3540static void char_ringbuf_finalize(Object *obj)
51767e7c 3541{
9fa2f7a4 3542 RingBufChardev *d = RINGBUF_CHARDEV(obj);
51767e7c
LL		 3543
3544 g_free(d->cbuf);
51767e7c
LL		 3545}
3546
777357d7
MAL		 3547static void qemu_chr_open_ringbuf(Chardev *chr,
3548 ChardevBackend *backend,
3549 bool *be_opened,
3550 Error **errp)
51767e7c 3551{
32bafa8f 3552 ChardevRingbuf *opts = backend->u.ringbuf.data;
777357d7 3553 RingBufChardev *d = RINGBUF_CHARDEV(chr);
51767e7c 3554
1da48c65 3555 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3556
3557 /* The size must be power of 2 */
3558 if (d->size & (d->size - 1)) {
4f57378f 3559 error_setg(errp, "size of ringbuf chardev must be power of two");
777357d7 3560 return;
51767e7c
LL		 3561 }
3562
3563 d->prod = 0;
3564 d->cons = 0;
3565 d->cbuf = g_malloc0(d->size);
1f590cf9
LL		 3566}
3567
3949e594 3568void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3569 bool has_format, enum DataFormat format,
1f590cf9
LL		 3570 Error **errp)
3571{
0ec7b3e7 3572 Chardev *chr;
c4f331b6 3573 const uint8_t *write_data;
1f590cf9 3574 int ret;
3d1bba20 3575 gsize write_count;
1f590cf9
LL		 3576
3577 chr = qemu_chr_find(device);
3578 if (!chr) {
1a69278e 3579 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3580 return;
3581 }
3582
777357d7 3583 if (!CHARDEV_IS_RINGBUF(chr)) {
3949e594 3584 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3585 return;
3586 }
3587
1f590cf9 3588 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3589 write_data = qbase64_decode(data, -1,
3590 &write_count,
3591 errp);
3592 if (!write_data) {
3593 return;
3594 }
1f590cf9
LL		 3595 } else {
3596 write_data = (uint8_t *)data;
82e59a67 3597 write_count = strlen(data);
1f590cf9
LL		 3598 }
3599
3949e594 3600 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3601
13289fb5
MA		 3602 if (write_data != (uint8_t *)data) {
3603 g_free((void *)write_data);
3604 }
3605
1f590cf9
LL		 3606 if (ret < 0) {
3607 error_setg(errp, "Failed to write to device %s", device);
3608 return;
3609 }
3610}
3611
3949e594 3612char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3613 bool has_format, enum DataFormat format,
3614 Error **errp)
49b6d722 3615{
0ec7b3e7 3616 Chardev *chr;
c4f331b6 3617 uint8_t *read_data;
49b6d722 3618 size_t count;
3ab651fc 3619 char *data;
49b6d722
LL		 3620
3621 chr = qemu_chr_find(device);
3622 if (!chr) {
1a69278e 3623 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3624 return NULL;
3625 }
3626
777357d7 3627 if (!CHARDEV_IS_RINGBUF(chr)) {
3949e594 3628 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3629 return NULL;
3630 }
3631
3632 if (size <= 0) {
3633 error_setg(errp, "size must be greater than zero");
3634 return NULL;
3635 }
3636
3949e594 3637 count = ringbuf_count(chr);
49b6d722 3638 size = size > count ? count : size;
44f3bcd2 3639 read_data = g_malloc(size + 1);
49b6d722 3640
3949e594 3641 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3642
3643 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3644 data = g_base64_encode(read_data, size);
13289fb5 3645 g_free(read_data);
49b6d722 3646 } else {
3949e594
MA		 3647 /*
3648 * FIXME should read only complete, valid UTF-8 characters up
3649 * to @size bytes. Invalid sequences should be replaced by a
3650 * suitable replacement character. Except when (and only
3651 * when) ring buffer lost characters since last read, initial
3652 * continuation characters should be dropped.
3653 */
44f3bcd2 3654 read_data[size] = 0;
3ab651fc 3655 data = (char *)read_data;
49b6d722
LL		 3656 }
3657
3ab651fc 3658 return data;
49b6d722
LL		 3659}
3660
33521634 3661QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3662{
6ea314d9 3663 char host[65], port[33], width[8], height[8];
aeb2c47a 3664 int pos;
7d31544f 3665 const char *p;
191bc01b 3666 QemuOpts *opts;
8be7e7e4 3667 Error *local_err = NULL;
191bc01b 3668
8be7e7e4 3669 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3670 if (local_err) {
33394884 3671 error_report_err(local_err);
191bc01b 3672 return NULL;
8be7e7e4 3673 }
191bc01b 3674
7591c5c1
GH		 3675 if (strstart(filename, "mon:", &p)) {
3676 filename = p;
f43e47db 3677 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3678 if (strcmp(filename, "stdio") == 0) {
3679 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3680 * but pass it to the guest. Handle this only for compat syntax,
3681 * for -chardev syntax we have special option for this.
3682 * This is what -nographic did, redirecting+muxing serial+monitor
3683 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3684 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3685 }
7591c5c1
GH		 3686 }
3687
f0457e8d
GH		 3688 if (strcmp(filename, "null") == 0 ||
3689 strcmp(filename, "pty") == 0 ||
3690 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3691 strcmp(filename, "braille") == 0 ||
5692399f 3692 strcmp(filename, "testdev") == 0 ||
f0457e8d 3693 strcmp(filename, "stdio") == 0) {
f43e47db 3694 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3695 return opts;
3696 }
6ea314d9 3697 if (strstart(filename, "vc", &p)) {
f43e47db 3698 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3699 if (*p == ':') {
49aa4058 3700 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3701 /* pixels */
f43e47db
MA		 3702 qemu_opt_set(opts, "width", width, &error_abort);
3703 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3704 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3705 /* chars */
f43e47db
MA		 3706 qemu_opt_set(opts, "cols", width, &error_abort);
3707 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3708 } else {
3709 goto fail;
3710 }
3711 }
3712 return opts;
3713 }
d6c983cd 3714 if (strcmp(filename, "con:") == 0) {
f43e47db 3715 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3716 return opts;
3717 }
48b76496 3718 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3719 qemu_opt_set(opts, "backend", "serial", &error_abort);
3720 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3721 return opts;
3722 }
7d31544f 3723 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3724 qemu_opt_set(opts, "backend", "file", &error_abort);
3725 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3726 return opts;
3727 }
3728 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3729 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3730 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3731 return opts;
3732 }
aeb2c47a
GH		 3733 if (strstart(filename, "tcp:", &p) ||
3734 strstart(filename, "telnet:", &p)) {
3735 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3736 host[0] = 0;
3737 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3738 goto fail;
3739 }
f43e47db
MA		 3740 qemu_opt_set(opts, "backend", "socket", &error_abort);
3741 qemu_opt_set(opts, "host", host, &error_abort);
3742 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3743 if (p[pos] == ',') {
dc523cd3
MA		 3744 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3745 if (local_err) {
3746 error_report_err(local_err);
aeb2c47a 3747 goto fail;
dc523cd3 3748 }
aeb2c47a
GH		 3749 }
3750 if (strstart(filename, "telnet:", &p))
f43e47db 3751 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3752 return opts;
3753 }
7e1b35b4 3754 if (strstart(filename, "udp:", &p)) {
f43e47db 3755 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3756 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3757 host[0] = 0;
39324ca4 3758 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3759 goto fail;
3760 }
3761 }
f43e47db
MA		 3762 qemu_opt_set(opts, "host", host, &error_abort);
3763 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3764 if (p[pos] == '@') {
3765 p += pos + 1;
3766 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3767 host[0] = 0;
3768 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3769 goto fail;
3770 }
3771 }
f43e47db
MA		 3772 qemu_opt_set(opts, "localaddr", host, &error_abort);
3773 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3774 }
3775 return opts;
3776 }
aeb2c47a 3777 if (strstart(filename, "unix:", &p)) {
f43e47db 3778 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3779 qemu_opts_do_parse(opts, p, "path", &local_err);
3780 if (local_err) {
3781 error_report_err(local_err);
aeb2c47a 3782 goto fail;
dc523cd3 3783 }
aeb2c47a
GH		 3784 return opts;
3785 }
48b76496
GH		 3786 if (strstart(filename, "/dev/parport", NULL) ||
3787 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3788 qemu_opt_set(opts, "backend", "parport", &error_abort);
3789 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3790 return opts;
3791 }
3792 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3793 qemu_opt_set(opts, "backend", "tty", &error_abort);
3794 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3795 return opts;
3796 }
191bc01b 3797
aeb2c47a 3798fail:
191bc01b
GH		 3799 qemu_opts_del(opts);
3800 return NULL;
3801}
3802
21a933ea 3803void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3804{
3805 const char *logfile = qemu_opt_get(opts, "logfile");
3806
3807 backend->has_logfile = logfile != NULL;
3808 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3809
3810 backend->has_logappend = true;
3811 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3812}
3813
3814
846e2e49
GH		 3815static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3816 Error **errp)
3817{
3818 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3819 ChardevFile *file;
846e2e49
GH		 3820
3821 if (path == NULL) {
3822 error_setg(errp, "chardev: file: no filename given");
3823 return;
3824 }
32bafa8f 3825 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3826 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3827 file->out = g_strdup(path);
31e38a22 3828
f194a1ae
EB		 3829 file->has_append = true;
3830 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3831}
3832
7c358031
GH		 3833static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3834 Error **errp)
3835{
f194a1ae
EB		 3836 ChardevStdio *stdio;
3837
32bafa8f 3838 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3839 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3840 stdio->has_signal = true;
3841 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3842}
3843
b68e956a
MAL		 3844static const CharDriver stdio_driver = {
3845 .kind = CHARDEV_BACKEND_KIND_STDIO,
3846 .parse = qemu_chr_parse_stdio,
777357d7
MAL		 3847};
3848
3849static void char_stdio_class_init(ObjectClass *oc, void *data)
3850{
3851 ChardevClass *cc = CHARDEV_CLASS(oc);
3852
3853 cc->open = qemu_chr_open_stdio;
b68e956a 3854#ifdef _WIN32
777357d7
MAL		 3855 cc->chr_write = win_stdio_write;
3856 cc->chr_set_echo = qemu_chr_set_echo_win_stdio;
b68e956a 3857#else
777357d7 3858 cc->chr_set_echo = qemu_chr_set_echo_stdio;
b68e956a 3859#endif
777357d7
MAL		 3860}
3861
3862static const TypeInfo char_stdio_type_info = {
3863 .name = TYPE_CHARDEV_STDIO,
3864#ifdef _WIN32
3865 .parent = TYPE_CHARDEV_WIN_STDIO,
3866#else
3867 .parent = TYPE_CHARDEV_FD,
4d833ada 3868 .instance_finalize = char_stdio_finalize,
777357d7
MAL		 3869#endif
3870 .class_init = char_stdio_class_init,
b68e956a
MAL		 3871};
3872
6511d396 3873#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3874static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3875 Error **errp)
3876{
3877 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3878 ChardevHostdev *serial;
0f1cb51d
GH		 3879
3880 if (device == NULL) {
3881 error_setg(errp, "chardev: serial/tty: no device path given");
3882 return;
3883 }
32bafa8f 3884 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3885 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3886 serial->device = g_strdup(device);
0f1cb51d 3887}
6511d396 3888#endif
0f1cb51d 3889
38bfb1a6 3890#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3891static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3892 Error **errp)
3893{
3894 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3895 ChardevHostdev *parallel;
dc375097
GH		 3896
3897 if (device == NULL) {
3898 error_setg(errp, "chardev: parallel: no device path given");
3899 return;
3900 }
32bafa8f 3901 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3902 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3903 parallel->device = g_strdup(device);
dc375097 3904}
38bfb1a6 3905#endif
dc375097 3906
548cbb36
GH		 3907static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3908 Error **errp)
3909{
3910 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3911 ChardevHostdev *dev;
548cbb36
GH		 3912
3913 if (device == NULL) {
3914 error_setg(errp, "chardev: pipe: no device path given");
3915 return;
3916 }
32bafa8f 3917 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3918 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3919 dev->device = g_strdup(device);
548cbb36
GH		 3920}
3921
b68e956a
MAL		 3922static const CharDriver pipe_driver = {
3923 .kind = CHARDEV_BACKEND_KIND_PIPE,
3924 .parse = qemu_chr_parse_pipe,
777357d7
MAL		 3925};
3926
3927static void char_pipe_class_init(ObjectClass *oc, void *data)
3928{
3929 ChardevClass *cc = CHARDEV_CLASS(oc);
3930
3931 cc->open = qemu_chr_open_pipe;
3932}
3933
3934static const TypeInfo char_pipe_type_info = {
3935 .name = TYPE_CHARDEV_PIPE,
b68e956a 3936#ifdef _WIN32
777357d7 3937 .parent = TYPE_CHARDEV_WIN,
b68e956a 3938#else
777357d7 3939 .parent = TYPE_CHARDEV_FD,
b68e956a 3940#endif
777357d7 3941 .class_init = char_pipe_class_init,
b68e956a
MAL		 3942};
3943
4f57378f
MA		 3944static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3945 Error **errp)
1da48c65
GH		 3946{
3947 int val;
f194a1ae 3948 ChardevRingbuf *ringbuf;
1da48c65 3949
32bafa8f 3950 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3951 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3952
0f953051 3953 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3954 if (val != 0) {
f194a1ae
EB		 3955 ringbuf->has_size = true;
3956 ringbuf->size = val;
1da48c65
GH		 3957 }
3958}
3959
b68e956a
MAL		 3960static const CharDriver ringbuf_driver = {
3961 .kind = CHARDEV_BACKEND_KIND_RINGBUF,
3962 .parse = qemu_chr_parse_ringbuf,
777357d7
MAL		 3963};
3964
3965static void char_ringbuf_class_init(ObjectClass *oc, void *data)
3966{
3967 ChardevClass *cc = CHARDEV_CLASS(oc);
3968
3969 cc->open = qemu_chr_open_ringbuf;
3970 cc->chr_write = ringbuf_chr_write;
777357d7
MAL		 3971}
3972
3973static const TypeInfo char_ringbuf_type_info = {
3974 .name = TYPE_CHARDEV_RINGBUF,
3975 .parent = TYPE_CHARDEV,
3976 .class_init = char_ringbuf_class_init,
3977 .instance_size = sizeof(RingBufChardev),
9fa2f7a4 3978 .instance_finalize = char_ringbuf_finalize,
b68e956a
MAL		 3979};
3980
3981/* Bug-compatibility: */
3982static const CharDriver memory_driver = {
3983 .kind = CHARDEV_BACKEND_KIND_MEMORY,
3984 .parse = qemu_chr_parse_ringbuf,
777357d7
MAL		 3985};
3986
3987static const TypeInfo char_memory_type_info = {
3988 .name = TYPE_CHARDEV_MEMORY,
3989 .parent = TYPE_CHARDEV_RINGBUF,
b68e956a
MAL		 3990};
3991
bb6fb7c0
GH		 3992static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3993 Error **errp)
3994{
3995 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3996 ChardevMux *mux;
bb6fb7c0
GH		 3997
3998 if (chardev == NULL) {
3999 error_setg(errp, "chardev: mux: no chardev given");
4000 return;
4001 }
32bafa8f 4002 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 4003 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
4004 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 4005}
4006
b68e956a
MAL		 4007static const CharDriver mux_driver = {
4008 .kind = CHARDEV_BACKEND_KIND_MUX,
4009 .parse = qemu_chr_parse_mux,
777357d7
MAL		 4010};
4011
4012static void char_mux_class_init(ObjectClass *oc, void *data)
4013{
4014 ChardevClass *cc = CHARDEV_CLASS(oc);
4015
4016 cc->open = qemu_chr_open_mux;
777357d7
MAL		 4017 cc->chr_write = mux_chr_write;
4018 cc->chr_accept_input = mux_chr_accept_input;
4019 cc->chr_add_watch = mux_chr_add_watch;
4020}
4021
4022static const TypeInfo char_mux_type_info = {
4023 .name = TYPE_CHARDEV_MUX,
4024 .parent = TYPE_CHARDEV,
4025 .class_init = char_mux_class_init,
4026 .instance_size = sizeof(MuxChardev),
980d0414 4027 .instance_finalize = char_mux_finalize,
b68e956a
MAL		 4028};
4029
dafd325d
PM		 4030static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
4031 Error **errp)
4032{
4033 bool is_listen = qemu_opt_get_bool(opts, "server", false);
4034 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
4035 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
4036 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 4037 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 4038 const char *path = qemu_opt_get(opts, "path");
4039 const char *host = qemu_opt_get(opts, "host");
4040 const char *port = qemu_opt_get(opts, "port");
a8fb5427 4041 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 4042 SocketAddress *addr;
f194a1ae 4043 ChardevSocket *sock;
dafd325d
PM		 4044
4045 if (!path) {
4046 if (!host) {
4047 error_setg(errp, "chardev: socket: no host given");
4048 return;
4049 }
4050 if (!port) {
4051 error_setg(errp, "chardev: socket: no port given");
4052 return;
4053 }
a8fb5427
DB		 4054 } else {
4055 if (tls_creds) {
4056 error_setg(errp, "TLS can only be used over TCP socket");
4057 return;
4058 }
dafd325d
PM		 4059 }
4060
32bafa8f 4061 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 4062 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 4063
f194a1ae
EB		 4064 sock->has_nodelay = true;
4065 sock->nodelay = do_nodelay;
4066 sock->has_server = true;
4067 sock->server = is_listen;
4068 sock->has_telnet = true;
4069 sock->telnet = is_telnet;
4070 sock->has_wait = true;
4071 sock->wait = is_waitconnect;
4072 sock->has_reconnect = true;
4073 sock->reconnect = reconnect;
4074 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 4075
4076 addr = g_new0(SocketAddress, 1);
4077 if (path) {
0399293e 4078 UnixSocketAddress *q_unix;
130257dc 4079 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 4080 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 4081 q_unix->path = g_strdup(path);
dafd325d 4082 } else {
130257dc 4083 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4084 addr->u.inet.data = g_new(InetSocketAddress, 1);
4085 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4086 .host = g_strdup(host),
4087 .port = g_strdup(port),
4088 .has_to = qemu_opt_get(opts, "to"),
4089 .to = qemu_opt_get_number(opts, "to", 0),
4090 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
4091 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
4092 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
4093 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
4094 };
dafd325d 4095 }
f194a1ae 4096 sock->addr = addr;
dafd325d
PM		 4097}
4098
90a14bfe
PM		 4099static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
4100 Error **errp)
4101{
4102 const char *host = qemu_opt_get(opts, "host");
4103 const char *port = qemu_opt_get(opts, "port");
4104 const char *localaddr = qemu_opt_get(opts, "localaddr");
4105 const char *localport = qemu_opt_get(opts, "localport");
4106 bool has_local = false;
4107 SocketAddress *addr;
f194a1ae 4108 ChardevUdp *udp;
90a14bfe
PM		 4109
4110 if (host == NULL || strlen(host) == 0) {
4111 host = "localhost";
4112 }
4113 if (port == NULL || strlen(port) == 0) {
4114 error_setg(errp, "chardev: udp: remote port not specified");
4115 return;
4116 }
4117 if (localport == NULL || strlen(localport) == 0) {
4118 localport = "0";
4119 } else {
4120 has_local = true;
4121 }
4122 if (localaddr == NULL || strlen(localaddr) == 0) {
4123 localaddr = "";
4124 } else {
4125 has_local = true;
4126 }
4127
32bafa8f 4128 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 4129 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 4130
4131 addr = g_new0(SocketAddress, 1);
130257dc 4132 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4133 addr->u.inet.data = g_new(InetSocketAddress, 1);
4134 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4135 .host = g_strdup(host),
4136 .port = g_strdup(port),
4137 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
4138 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
4139 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
4140 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
4141 };
f194a1ae 4142 udp->remote = addr;
90a14bfe
PM		 4143
4144 if (has_local) {
f194a1ae 4145 udp->has_local = true;
90a14bfe 4146 addr = g_new0(SocketAddress, 1);
130257dc 4147 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4148 addr->u.inet.data = g_new(InetSocketAddress, 1);
4149 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4150 .host = g_strdup(localaddr),
4151 .port = g_strdup(localport),
4152 };
f194a1ae 4153 udp->local = addr;
90a14bfe
PM		 4154 }
4155}
4156
a1698bf1 4157static const CharDriver *backends[CHARDEV_BACKEND_KIND__MAX];
d654f34e 4158
0b812f31 4159void register_char_driver(const CharDriver *driver)
2c5f4882 4160{
a1698bf1 4161 backends[driver->kind] = driver;
2c5f4882
GH		 4162}
4163
0ec7b3e7
MAL		 4164Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
4165 Error **errp)
191bc01b 4166{
0aff637e 4167 Error *local_err = NULL;
a1698bf1 4168 const CharDriver *cd = NULL;
0ec7b3e7 4169 Chardev *chr;
a1698bf1 4170 int i;
a61ae7f8
PM		 4171 ChardevReturn *ret = NULL;
4172 ChardevBackend *backend;
0b812f31 4173 const char *name = qemu_opt_get(opts, "backend");
a61ae7f8
PM		 4174 const char *id = qemu_opts_id(opts);
4175 char *bid = NULL;
191bc01b 4176
0b812f31 4177 if (name == NULL) {
312fd5f2 4178 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 4179 qemu_opts_id(opts));
2274ae9d 4180 goto err;
1bbd185f 4181 }
517b3d40 4182
0b812f31 4183 if (is_help_option(name)) {
776a32a0 4184 GString *str = g_string_new("");
a1698bf1
MAL		 4185 for (i = 0; i < ARRAY_SIZE(backends); i++) {
4186 cd = backends[i];
4187 if (cd) {
776a32a0 4188 g_string_append_printf(str, "\n%s", ChardevBackendKind_lookup[cd->kind]);
a1698bf1 4189 if (cd->alias) {
776a32a0 4190 g_string_append_printf(str, "\n%s", cd->alias);
a1698bf1 4191 }
0b812f31 4192 }
517b3d40 4193 }
776a32a0
MAL		 4194
4195 error_report("Available chardev backend types: %s", str->str);
4196 g_string_free(str, true);
0b812f31 4197 exit(0);
517b3d40
LM		 4198 }
4199
4200 if (id == NULL) {
4201 error_setg(errp, "chardev: no id specified");
4202 goto err;
4203 }
4204
a1698bf1
MAL		 4205 for (i = 0; i < ARRAY_SIZE(backends); i++) {
4206 cd = backends[i];
4207 if (!cd) {
4208 continue;
4209 }
0b812f31
MAL		 4210 if (g_strcmp0(ChardevBackendKind_lookup[cd->kind], name) == 0 ||
4211 g_strcmp0(cd->alias, name) == 0) {
191bc01b 4212 break;
d654f34e 4213 }
191bc01b 4214 }
a1698bf1 4215 if (i == ARRAY_SIZE(backends)) {
0b812f31 4216 error_setg(errp, "chardev: backend \"%s\" not found", name);
e668287d 4217 goto err;
191bc01b
GH		 4218 }
4219
a61ae7f8 4220 backend = g_new0(ChardevBackend, 1);
edb2fb3c 4221
a61ae7f8
PM		 4222 if (qemu_opt_get_bool(opts, "mux", 0)) {
4223 bid = g_strdup_printf("%s-base", id);
4224 }
2c5f4882 4225
a61ae7f8 4226 chr = NULL;
130257dc 4227 backend->type = cd->kind;
a61ae7f8
PM		 4228 if (cd->parse) {
4229 cd->parse(opts, backend, &local_err);
4230 if (local_err) {
4231 error_propagate(errp, local_err);
2c5f4882
GH		 4232 goto qapi_out;
4233 }
d0d7708b
DB		 4234 } else {
4235 ChardevCommon *cc = g_new0(ChardevCommon, 1);
4236 qemu_chr_parse_common(opts, cc);
32bafa8f 4237 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 4238 }
d0d7708b 4239
a61ae7f8
PM		 4240 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
4241 if (!ret) {
4242 goto qapi_out;
191bc01b
GH		 4243 }
4244
a61ae7f8
PM		 4245 if (bid) {
4246 qapi_free_ChardevBackend(backend);
4247 qapi_free_ChardevReturn(ret);
4248 backend = g_new0(ChardevBackend, 1);
32bafa8f 4249 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 4250 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 4251 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 4252 ret = qmp_chardev_add(id, backend, errp);
4253 if (!ret) {
4254 chr = qemu_chr_find(bid);
4255 qemu_chr_delete(chr);
4256 chr = NULL;
4257 goto qapi_out;
4258 }
bd5c51ee 4259 }
7591c5c1 4260
a61ae7f8 4261 chr = qemu_chr_find(id);
a61ae7f8
PM		 4262
4263qapi_out:
4264 qapi_free_ChardevBackend(backend);
4265 qapi_free_ChardevReturn(ret);
4266 g_free(bid);
191bc01b 4267 return chr;
2274ae9d
GH		 4268
4269err:
2274ae9d 4270 return NULL;
191bc01b
GH		 4271}
4272
0ec7b3e7 4273Chardev *qemu_chr_new_noreplay(const char *label, const char *filename)
6f97dba0
AL		 4274{
4275 const char *p;
0ec7b3e7 4276 Chardev *chr;
191bc01b 4277 QemuOpts *opts;
bd2d80b2 4278 Error *err = NULL;
191bc01b 4279
c845f401
GH		 4280 if (strstart(filename, "chardev:", &p)) {
4281 return qemu_chr_find(p);
4282 }
4283
191bc01b 4284 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 4285 if (!opts)
4286 return NULL;
6f97dba0 4287
b4948be9 4288 chr = qemu_chr_new_from_opts(opts, &err);
84d18f06 4289 if (err) {
565f65d2 4290 error_report_err(err);
bd2d80b2 4291 }
7e1b35b4
GH		 4292 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
4293 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0 4294 }
0a73336d 4295 qemu_opts_del(opts);
6f97dba0
AL		 4296 return chr;
4297}
4298
0ec7b3e7 4299Chardev *qemu_chr_new(const char *label, const char *filename)
33577b47 4300{
0ec7b3e7 4301 Chardev *chr;
b4948be9 4302 chr = qemu_chr_new_noreplay(label, filename);
33577b47 4303 if (chr) {
5ebd6703
MAL		 4304 if (replay_mode != REPLAY_MODE_NONE) {
4305 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY);
4306 }
777357d7 4307 if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) {
776a32a0
MAL		 4308 error_report("Replay: ioctl is not supported "
4309 "for serial devices yet");
33577b47
PD		 4310 }
4311 replay_register_char_driver(chr);
4312 }
4313 return chr;
4314}
4315
5345fdb4 4316void qemu_chr_fe_set_echo(CharBackend *be, bool echo)
c48855e1 4317{
0ec7b3e7 4318 Chardev *chr = be->chr;
5345fdb4 4319
777357d7
MAL		 4320 if (chr && CHARDEV_GET_CLASS(chr)->chr_set_echo) {
4321 CHARDEV_GET_CLASS(chr)->chr_set_echo(chr, echo);
c48855e1
PB		 4322 }
4323}
4324
5345fdb4 4325void qemu_chr_fe_set_open(CharBackend *be, int fe_open)
7c32c4fe 4326{
0ec7b3e7 4327 Chardev *chr = be->chr;
5345fdb4 4328
fa394ed6
MAL		 4329 if (!chr) {
4330 return;
4331 }
4332
830896af 4333 if (be->fe_open == fe_open) {
c0c4bd2c
HG		 4334 return;
4335 }
830896af 4336 be->fe_open = fe_open;
777357d7
MAL		 4337 if (CHARDEV_GET_CLASS(chr)->chr_set_fe_open) {
4338 CHARDEV_GET_CLASS(chr)->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4339 }
4340}
4341
5345fdb4 4342guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
6f1de6b7 4343 GIOFunc func, void *user_data)
23673ca7 4344{
0ec7b3e7 4345 Chardev *s = be->chr;
23673ca7
AL		 4346 GSource *src;
4347 guint tag;
4348
777357d7 4349 if (!s || CHARDEV_GET_CLASS(s)->chr_add_watch == NULL) {
6f1de6b7 4350 return 0;
23673ca7
AL		 4351 }
4352
777357d7 4353 src = CHARDEV_GET_CLASS(s)->chr_add_watch(s, cond);
62c339c5 4354 if (!src) {
6f1de6b7 4355 return 0;
62c339c5
PB		 4356 }
4357
23673ca7
AL		 4358 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4359 tag = g_source_attach(src, NULL);
4360 g_source_unref(src);
4361
4362 return tag;
4363}
4364
5345fdb4 4365void qemu_chr_fe_disconnect(CharBackend *be)
7d9d17f7 4366{
0ec7b3e7 4367 Chardev *chr = be->chr;
5345fdb4 4368
777357d7
MAL		 4369 if (chr && CHARDEV_GET_CLASS(chr)->chr_disconnect) {
4370 CHARDEV_GET_CLASS(chr)->chr_disconnect(chr);
7d9d17f7
TM		 4371 }
4372}
4373
0ec7b3e7 4374void qemu_chr_delete(Chardev *chr)
1ad78ea5
MAL		 4375{
4376 QTAILQ_REMOVE(&chardevs, chr, next);
8cddc469 4377 object_unref(OBJECT(chr));
1ad78ea5
MAL		 4378}
4379
c5a415a0 4380ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4381{
c5a415a0 4382 ChardevInfoList *chr_list = NULL;
0ec7b3e7 4383 Chardev *chr;
6f97dba0 4384
72cf2d4f 4385 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4386 ChardevInfoList *info = g_malloc0(sizeof(*info));
4387 info->value = g_malloc0(sizeof(*info->value));
4388 info->value->label = g_strdup(chr->label);
4389 info->value->filename = g_strdup(chr->filename);
830896af 4390 info->value->frontend_open = chr->be && chr->be->fe_open;
c5a415a0
LC		 4391
4392 info->next = chr_list;
4393 chr_list = info;
6f97dba0 4394 }
588b3832 4395
c5a415a0 4396 return chr_list;
6f97dba0 4397}
c845f401 4398
0b812f31
MAL		 4399static ChardevBackendInfoList *
4400qmp_prepend_backend(ChardevBackendInfoList *list, const char *name)
4401{
4402 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4403 info->value = g_malloc0(sizeof(*info->value));
4404 info->value->name = g_strdup(name);
4405 info->next = list;
4406 return info;
4407}
4408
77d1c3c6
MK		 4409ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4410{
4411 ChardevBackendInfoList *backend_list = NULL;
a1698bf1
MAL		 4412 const CharDriver *c;
4413 int i;
4414
4415 for (i = 0; i < ARRAY_SIZE(backends); i++) {
4416 c = backends[i];
4417 if (!c) {
4418 continue;
4419 }
77d1c3c6 4420
0b812f31
MAL		 4421 backend_list = qmp_prepend_backend(backend_list,
4422 ChardevBackendKind_lookup[c->kind]);
4423 if (c->alias) {
4424 backend_list = qmp_prepend_backend(backend_list, c->alias);
4425 }
77d1c3c6
MK		 4426 }
4427
4428 return backend_list;
4429}
4430
0ec7b3e7 4431Chardev *qemu_chr_find(const char *name)
c845f401 4432{
0ec7b3e7 4433 Chardev *chr;
c845f401 4434
72cf2d4f 4435 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4436 if (strcmp(chr->label, name) != 0)
4437 continue;
4438 return chr;
4439 }
4440 return NULL;
4441}
0beb4942 4442
4d454574
PB		 4443QemuOptsList qemu_chardev_opts = {
4444 .name = "chardev",
4445 .implied_opt_name = "backend",
4446 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4447 .desc = {
4448 {
4449 .name = "backend",
4450 .type = QEMU_OPT_STRING,
4451 },{
4452 .name = "path",
4453 .type = QEMU_OPT_STRING,
4454 },{
4455 .name = "host",
4456 .type = QEMU_OPT_STRING,
4457 },{
4458 .name = "port",
4459 .type = QEMU_OPT_STRING,
4460 },{
4461 .name = "localaddr",
4462 .type = QEMU_OPT_STRING,
4463 },{
4464 .name = "localport",
4465 .type = QEMU_OPT_STRING,
4466 },{
4467 .name = "to",
4468 .type = QEMU_OPT_NUMBER,
4469 },{
4470 .name = "ipv4",
4471 .type = QEMU_OPT_BOOL,
4472 },{
4473 .name = "ipv6",
4474 .type = QEMU_OPT_BOOL,
4475 },{
4476 .name = "wait",
4477 .type = QEMU_OPT_BOOL,
4478 },{
4479 .name = "server",
4480 .type = QEMU_OPT_BOOL,
4481 },{
4482 .name = "delay",
4483 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4484 },{
4485 .name = "reconnect",
4486 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4487 },{
4488 .name = "telnet",
4489 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4490 },{
4491 .name = "tls-creds",
4492 .type = QEMU_OPT_STRING,
4d454574
PB		 4493 },{
4494 .name = "width",
4495 .type = QEMU_OPT_NUMBER,
4496 },{
4497 .name = "height",
4498 .type = QEMU_OPT_NUMBER,
4499 },{
4500 .name = "cols",
4501 .type = QEMU_OPT_NUMBER,
4502 },{
4503 .name = "rows",
4504 .type = QEMU_OPT_NUMBER,
4505 },{
4506 .name = "mux",
4507 .type = QEMU_OPT_BOOL,
4508 },{
4509 .name = "signal",
4510 .type = QEMU_OPT_BOOL,
4511 },{
4512 .name = "name",
4513 .type = QEMU_OPT_STRING,
4514 },{
4515 .name = "debug",
4516 .type = QEMU_OPT_NUMBER,
51767e7c 4517 },{
3949e594 4518 .name = "size",
de1cc36e 4519 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4520 },{
4521 .name = "chardev",
4522 .type = QEMU_OPT_STRING,
31e38a22
OK		 4523 },{
4524 .name = "append",
4525 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4526 },{
4527 .name = "logfile",
4528 .type = QEMU_OPT_STRING,
4529 },{
4530 .name = "logappend",
4531 .type = QEMU_OPT_BOOL,
4d454574
PB		 4532 },
4533 { /* end of list */ }
4534 },
4535};
f1a1a356 4536
ffbdbe59
GH		 4537#ifdef _WIN32
4538
777357d7
MAL		 4539static void qmp_chardev_open_file(Chardev *chr,
4540 ChardevBackend *backend,
4541 bool *be_opened,
4542 Error **errp)
ffbdbe59 4543{
32bafa8f 4544 ChardevFile *file = backend->u.file.data;
ffbdbe59 4545 HANDLE out;
c025f689
SW		 4546 DWORD accessmode;
4547 DWORD flags;
ffbdbe59 4548
e859eda5 4549 if (file->has_in) {
ffbdbe59 4550 error_setg(errp, "input file not supported");
777357d7 4551 return;
ffbdbe59
GH		 4552 }
4553
c025f689
SW		 4554 if (file->has_append && file->append) {
4555 /* Append to file if it already exists. */
4556 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4557 flags = OPEN_ALWAYS;
4558 } else {
4559 /* Truncate file if it already exists. */
4560 accessmode = GENERIC_WRITE;
4561 flags = CREATE_ALWAYS;
4562 }
4563
4564 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4565 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4566 if (out == INVALID_HANDLE_VALUE) {
4567 error_setg(errp, "open %s failed", file->out);
777357d7 4568 return;
ffbdbe59 4569 }
777357d7
MAL		 4570
4571 qemu_chr_open_win_file(chr, out);
ffbdbe59
GH		 4572}
4573
777357d7
MAL		 4574static void qmp_chardev_open_serial(Chardev *chr,
4575 ChardevBackend *backend,
4576 bool *be_opened,
4577 Error **errp)
d59044ef 4578{
32bafa8f 4579 ChardevHostdev *serial = backend->u.serial.data;
acbfbe4a 4580
777357d7 4581 win_chr_init(chr, serial->device, errp);
d36b2b90
MA		 4582}
4583
ffbdbe59
GH		 4584#else /* WIN32 */
4585
4586static int qmp_chardev_open_file_source(char *src, int flags,
4587 Error **errp)
4588{
4589 int fd = -1;
4590
4591 TFR(fd = qemu_open(src, flags, 0666));
4592 if (fd == -1) {
20c39760 4593 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4594 }
4595 return fd;
4596}
4597
777357d7
MAL		 4598static void qmp_chardev_open_file(Chardev *chr,
4599 ChardevBackend *backend,
4600 bool *be_opened,
4601 Error **errp)
ffbdbe59 4602{
32bafa8f 4603 ChardevFile *file = backend->u.file.data;
5f758366 4604 int flags, in = -1, out;
ffbdbe59 4605
31e38a22
OK		 4606 flags = O_WRONLY | O_CREAT | O_BINARY;
4607 if (file->has_append && file->append) {
4608 flags |= O_APPEND;
4609 } else {
4610 flags |= O_TRUNC;
4611 }
4612
ffbdbe59 4613 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4614 if (out < 0) {
777357d7 4615 return;
ffbdbe59
GH		 4616 }
4617
e859eda5 4618 if (file->has_in) {
ffbdbe59
GH		 4619 flags = O_RDONLY;
4620 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4621 if (in < 0) {
ffbdbe59 4622 qemu_close(out);
777357d7 4623 return;
ffbdbe59
GH		 4624 }
4625 }
4626
777357d7 4627 qemu_chr_open_fd(chr, in, out);
ffbdbe59
GH		 4628}
4629
d809ab95 4630#ifdef HAVE_CHARDEV_SERIAL
777357d7
MAL		 4631static void qmp_chardev_open_serial(Chardev *chr,
4632 ChardevBackend *backend,
4633 bool *be_opened,
4634 Error **errp)
d59044ef 4635{
32bafa8f 4636 ChardevHostdev *serial = backend->u.serial.data;
d36b2b90
MA		 4637 int fd;
4638
4639 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4640 if (fd < 0) {
777357d7 4641 return;
39099991 4642 }
f9e8cacc 4643 qemu_set_nonblock(fd);
acbfbe4a 4644 tty_serial_init(fd, 115200, 'N', 8, 1);
b68e956a 4645
777357d7 4646 qemu_chr_open_fd(chr, fd, fd);
d36b2b90 4647}
6511d396 4648#endif
d36b2b90 4649
d809ab95 4650#ifdef HAVE_CHARDEV_PARPORT
777357d7
MAL		 4651static void qmp_chardev_open_parallel(Chardev *chr,
4652 ChardevBackend *backend,
4653 bool *be_opened,
4654 Error **errp)
d36b2b90 4655{
32bafa8f 4656 ChardevHostdev *parallel = backend->u.parallel.data;
d36b2b90
MA		 4657 int fd;
4658
4659 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4660 if (fd < 0) {
777357d7 4661 return;
d59044ef 4662 }
777357d7 4663 qemu_chr_open_pp_fd(chr, fd, be_opened, errp);
d59044ef 4664}
b68e956a
MAL		 4665
4666static const CharDriver parallel_driver = {
4667 .kind = CHARDEV_BACKEND_KIND_PARALLEL,
4668 .alias = "parport",
4669 .parse = qemu_chr_parse_parallel,
777357d7
MAL		 4670};
4671
4672static void char_parallel_class_init(ObjectClass *oc, void *data)
4673{
4674 ChardevClass *cc = CHARDEV_CLASS(oc);
4675
4676 cc->open = qmp_chardev_open_parallel;
b68e956a 4677#if defined(__linux__)
777357d7
MAL		 4678 cc->chr_write = null_chr_write;
4679 cc->chr_ioctl = pp_ioctl;
b68e956a 4680#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
777357d7
MAL		 4681 cc->chr_write = null_chr_write;
4682 cc->chr_ioctl = pp_ioctl;
b68e956a 4683#endif
777357d7
MAL		 4684}
4685
c9305728
MAL		 4686static void char_parallel_finalize(Object *obj)
4687{
4688#if defined(__linux__)
4689 Chardev *chr = CHARDEV(obj);
4690 ParallelChardev *drv = PARALLEL_CHARDEV(chr);
4691 int fd = drv->fd;
4692
4693 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
4694 ioctl(fd, PPRELEASE);
4695 close(fd);
4696 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
4697#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
4698 /* FIXME: close fd? */
4699#endif
4700}
4701
777357d7
MAL		 4702static const TypeInfo char_parallel_type_info = {
4703 .name = TYPE_CHARDEV_PARALLEL,
4704 .parent = TYPE_CHARDEV,
4705 .instance_size = sizeof(ParallelChardev),
c9305728 4706 .instance_finalize = char_parallel_finalize,
777357d7 4707 .class_init = char_parallel_class_init,
b68e956a 4708};
d809ab95 4709#endif
d59044ef 4710
ffbdbe59
GH		 4711#endif /* WIN32 */
4712
b68e956a
MAL		 4713static const CharDriver file_driver = {
4714 .kind = CHARDEV_BACKEND_KIND_FILE,
4715 .parse = qemu_chr_parse_file_out,
777357d7
MAL		 4716};
4717
4718static void char_file_class_init(ObjectClass *oc, void *data)
4719{
4720 ChardevClass *cc = CHARDEV_CLASS(oc);
4721
4722 cc->open = qmp_chardev_open_file;
777357d7
MAL		 4723}
4724
4725static const TypeInfo char_file_type_info = {
4726 .name = TYPE_CHARDEV_FILE,
4727#ifdef _WIN32
4728 .parent = TYPE_CHARDEV_WIN,
b68e956a 4729#else
777357d7 4730 .parent = TYPE_CHARDEV_FD,
b68e956a 4731#endif
777357d7 4732 .class_init = char_file_class_init,
b68e956a
MAL		 4733};
4734
4735#ifdef HAVE_CHARDEV_SERIAL
777357d7 4736
b68e956a
MAL		 4737static const CharDriver serial_driver = {
4738 .kind = CHARDEV_BACKEND_KIND_SERIAL,
4739 .alias = "tty",
4740 .parse = qemu_chr_parse_serial,
777357d7
MAL		 4741};
4742
4743static void char_serial_class_init(ObjectClass *oc, void *data)
4744{
4745 ChardevClass *cc = CHARDEV_CLASS(oc);
4746
4747 cc->open = qmp_chardev_open_serial;
4748#ifndef _WIN32
4749 cc->chr_ioctl = tty_serial_ioctl;
777357d7
MAL		 4750#endif
4751}
4752
4753static const TypeInfo char_serial_type_info = {
4754 .name = TYPE_CHARDEV_SERIAL,
b68e956a 4755#ifdef _WIN32
777357d7 4756 .parent = TYPE_CHARDEV_WIN,
b68e956a 4757#else
777357d7 4758 .parent = TYPE_CHARDEV_FD,
b68e956a 4759#endif
777357d7 4760 .class_init = char_serial_class_init,
b68e956a
MAL		 4761};
4762#endif
4763
5dd1f02b
CM		 4764static gboolean socket_reconnect_timeout(gpointer opaque)
4765{
777357d7
MAL		 4766 Chardev *chr = CHARDEV(opaque);
4767 SocketChardev *s = SOCKET_CHARDEV(opaque);
317856ca 4768 QIOChannelSocket *sioc;
5dd1f02b
CM		 4769
4770 s->reconnect_timer = 0;
4771
4772 if (chr->be_open) {
4773 return false;
4774 }
4775
317856ca 4776 sioc = qio_channel_socket_new();
e93a68e1 4777 tcp_chr_set_client_ioc_name(chr, sioc);
317856ca
DB		 4778 qio_channel_socket_connect_async(sioc, s->addr,
4779 qemu_chr_socket_connected,
4780 chr, NULL);
5dd1f02b
CM		 4781
4782 return false;
4783}
4784
777357d7
MAL		 4785static void qmp_chardev_open_socket(Chardev *chr,
4786 ChardevBackend *backend,
4787 bool *be_opened,
4788 Error **errp)
f6bd5d6e 4789{
777357d7 4790 SocketChardev *s = SOCKET_CHARDEV(chr);
32bafa8f 4791 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4792 SocketAddress *addr = sock->addr;
4793 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4794 bool is_listen = sock->has_server ? sock->server : true;
4795 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4796 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4797 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
317856ca 4798 QIOChannelSocket *sioc = NULL;
43ded1a0 4799
130257dc 4800 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4801 s->is_listen = is_listen;
4802 s->is_telnet = is_telnet;
43ded1a0 4803 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4804 if (sock->tls_creds) {
4805 Object *creds;
4806 creds = object_resolve_path_component(
4807 object_get_objects_root(), sock->tls_creds);
4808 if (!creds) {
4809 error_setg(errp, "No TLS credentials with id '%s'",
4810 sock->tls_creds);
4811 goto error;
4812 }
4813 s->tls_creds = (QCryptoTLSCreds *)
4814 object_dynamic_cast(creds,
4815 TYPE_QCRYPTO_TLS_CREDS);
4816 if (!s->tls_creds) {
4817 error_setg(errp, "Object with id '%s' is not TLS credentials",
4818 sock->tls_creds);
4819 goto error;
4820 }
4821 object_ref(OBJECT(s->tls_creds));
4822 if (is_listen) {
4823 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4824 error_setg(errp, "%s",
4825 "Expected TLS credentials for server endpoint");
4826 goto error;
4827 }
4828 } else {
4829 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4830 error_setg(errp, "%s",
4831 "Expected TLS credentials for client endpoint");
4832 goto error;
4833 }
4834 }
4835 }
4836
37f9e0a2 4837 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0 4838
0a73336d
DB		 4839 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
4840 if (s->is_unix) {
4841 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
4842 }
4843
43ded1a0 4844 /* be isn't opened until we get a connection */
82878dac 4845 *be_opened = false;
43ded1a0 4846
0ff0fad2
DB		 4847 chr->filename = SocketAddress_to_str("disconnected:",
4848 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4849
4850 if (is_listen) {
43ded1a0
CM		 4851 if (is_telnet) {
4852 s->do_telnetopt = 1;
4853 }
5dd1f02b
CM		 4854 } else if (reconnect > 0) {
4855 s->reconnect_time = reconnect;
f6bd5d6e 4856 }
43ded1a0 4857
5008e5b7 4858 if (s->reconnect_time) {
d7a04fd7 4859 sioc = qio_channel_socket_new();
e93a68e1 4860 tcp_chr_set_client_ioc_name(chr, sioc);
317856ca
DB		 4861 qio_channel_socket_connect_async(sioc, s->addr,
4862 qemu_chr_socket_connected,
4863 chr, NULL);
08b758b4 4864 } else {
d7a04fd7 4865 if (s->is_listen) {
e93a68e1 4866 char *name;
d7a04fd7 4867 sioc = qio_channel_socket_new();
e93a68e1
DB		 4868
4869 name = g_strdup_printf("chardev-tcp-listener-%s", chr->label);
4870 qio_channel_set_name(QIO_CHANNEL(sioc), name);
4871 g_free(name);
4872
d7a04fd7
MAL		 4873 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4874 goto error;
4875 }
4876 s->listen_ioc = sioc;
4877 if (is_waitconnect &&
4878 qemu_chr_wait_connected(chr, errp) < 0) {
2c3a5dcb 4879 return;
d7a04fd7
MAL		 4880 }
4881 if (!s->ioc) {
4882 s->listen_tag = qio_channel_add_watch(
4883 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4884 tcp_chr_accept, chr, NULL);
4885 }
4886 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4887 goto error;
4888 }
43ded1a0
CM		 4889 }
4890
777357d7 4891 return;
a8fb5427 4892
777357d7 4893error:
08b758b4
DB		 4894 if (sioc) {
4895 object_unref(OBJECT(sioc));
4896 }
f6bd5d6e
GH		 4897}
4898
b68e956a
MAL		 4899static const CharDriver socket_driver = {
4900 .kind = CHARDEV_BACKEND_KIND_SOCKET,
4901 .parse = qemu_chr_parse_socket,
b68e956a
MAL		 4902};
4903
777357d7
MAL		 4904static void char_socket_class_init(ObjectClass *oc, void *data)
4905{
4906 ChardevClass *cc = CHARDEV_CLASS(oc);
4907
4908 cc->open = qmp_chardev_open_socket;
4909 cc->chr_wait_connected = tcp_chr_wait_connected;
4910 cc->chr_write = tcp_chr_write;
4911 cc->chr_sync_read = tcp_chr_sync_read;
4912 cc->chr_disconnect = tcp_chr_disconnect;
4913 cc->get_msgfds = tcp_get_msgfds;
4914 cc->set_msgfds = tcp_set_msgfds;
4915 cc->chr_add_client = tcp_chr_add_client;
4916 cc->chr_add_watch = tcp_chr_add_watch;
4917 cc->chr_update_read_handler = tcp_chr_update_read_handler;
777357d7
MAL		 4918}
4919
4920static const TypeInfo char_socket_type_info = {
4921 .name = TYPE_CHARDEV_SOCKET,
4922 .parent = TYPE_CHARDEV,
4923 .instance_size = sizeof(SocketChardev),
2c3a5dcb 4924 .instance_finalize = char_socket_finalize,
777357d7
MAL		 4925 .class_init = char_socket_class_init,
4926};
4927
4928static void qmp_chardev_open_udp(Chardev *chr,
4929 ChardevBackend *backend,
4930 bool *be_opened,
4931 Error **errp)
3ecc059d 4932{
32bafa8f 4933 ChardevUdp *udp = backend->u.udp.data;
9894dc0c 4934 QIOChannelSocket *sioc = qio_channel_socket_new();
e93a68e1 4935 char *name;
777357d7 4936 UdpChardev *s = UDP_CHARDEV(chr);
3ecc059d 4937
9894dc0c 4938 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4939 udp->local, udp->remote,
9894dc0c
DB		 4940 errp) < 0) {
4941 object_unref(OBJECT(sioc));
777357d7 4942 return;
acbfbe4a 4943 }
e93a68e1
DB		 4944
4945 name = g_strdup_printf("chardev-udp-%s", chr->label);
4946 qio_channel_set_name(QIO_CHANNEL(sioc), name);
4947 g_free(name);
4948
acbfbe4a 4949 s->ioc = QIO_CHANNEL(sioc);
acbfbe4a
MAL		 4950 /* be isn't opened until we get a connection */
4951 *be_opened = false;
3ecc059d
GH		 4952}
4953
b68e956a
MAL		 4954static const CharDriver udp_driver = {
4955 .kind = CHARDEV_BACKEND_KIND_UDP,
4956 .parse = qemu_chr_parse_udp,
777357d7
MAL		 4957};
4958
4959static void char_udp_class_init(ObjectClass *oc, void *data)
4960{
4961 ChardevClass *cc = CHARDEV_CLASS(oc);
4962
4963 cc->open = qmp_chardev_open_udp;
4964 cc->chr_write = udp_chr_write;
4965 cc->chr_update_read_handler = udp_chr_update_read_handler;
777357d7
MAL		 4966}
4967
4968static const TypeInfo char_udp_type_info = {
4969 .name = TYPE_CHARDEV_UDP,
4970 .parent = TYPE_CHARDEV,
4971 .instance_size = sizeof(UdpChardev),
819aad23 4972 .instance_finalize = char_udp_finalize,
777357d7 4973 .class_init = char_udp_class_init,
b68e956a 4974};
0a73336d 4975
0ec7b3e7 4976bool qemu_chr_has_feature(Chardev *chr,
0a73336d
DB		 4977 CharDriverFeature feature)
4978{
4979 return test_bit(feature, chr->features);
4980}
4981
0ec7b3e7 4982void qemu_chr_set_feature(Chardev *chr,
0a73336d
DB		 4983 CharDriverFeature feature)
4984{
4985 return set_bit(feature, chr->features);
4986}
4987
777357d7
MAL		 4988static const ChardevClass *char_get_class(const char *driver, Error **errp)
4989{
4990 ObjectClass *oc;
4991 const ChardevClass *cc;
4992 char *typename = g_strdup_printf("chardev-%s", driver);
4993
4994 oc = object_class_by_name(typename);
4995 g_free(typename);
4996
4997 if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) {
4998 error_setg(errp, "'%s' is not a valid char driver name", driver);
4999 return NULL;
5000 }
5001
5002 if (object_class_is_abstract(oc)) {
5003 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
5004 "abstract device type");
5005 return NULL;
5006 }
5007
5008 cc = CHARDEV_CLASS(oc);
5009 if (cc->internal) {
5010 error_setg(errp, "'%s' is not a valid char driver name", driver);
5011 return NULL;
5012 }
5013
5014 return cc;
5015}
5016
5017Chardev *qemu_chardev_new(const char *id, const char *typename,
5018 ChardevBackend *backend, Error **errp)
f1a1a356 5019{
0ec7b3e7 5020 Chardev *chr = NULL;
eaeba653 5021 Error *local_err = NULL;
82878dac 5022 bool be_opened = true;
f1a1a356 5023
777357d7 5024 assert(g_str_has_prefix(typename, "chardev-"));
f1a1a356 5025
777357d7
MAL		 5026 chr = CHARDEV(object_new(typename));
5027 chr->label = g_strdup(id);
4ca17281 5028
777357d7 5029 qemu_char_open(chr, backend, &be_opened, &local_err);
a1698bf1
MAL		 5030 if (local_err) {
5031 error_propagate(errp, local_err);
777357d7
MAL		 5032 object_unref(OBJECT(chr));
5033 return NULL;
eaeba653
PB		 5034 }
5035
eaeba653 5036 if (!chr->filename) {
777357d7 5037 chr->filename = g_strdup(typename + 8);
f1a1a356 5038 }
82878dac 5039 if (be_opened) {
eaeba653
PB		 5040 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
5041 }
777357d7
MAL		 5042
5043 return chr;
5044}
5045
5046ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
5047 Error **errp)
5048{
5049 const ChardevClass *cc;
5050 ChardevReturn *ret;
5051 Chardev *chr;
5052
5053 chr = qemu_chr_find(id);
5054 if (chr) {
5055 error_setg(errp, "Chardev '%s' already exists", id);
5056 return NULL;
5057 }
5058
5059 cc = char_get_class(ChardevBackendKind_lookup[backend->type], errp);
5060 if (!cc) {
5061 return NULL;
5062 }
5063
5064 chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)),
5065 backend, errp);
5066 if (!chr) {
5067 return NULL;
5068 }
5069
5070 ret = g_new0(ChardevReturn, 1);
5071 if (CHARDEV_IS_PTY(chr)) {
5072 ret->pty = g_strdup(chr->filename + 4);
5073 ret->has_pty = true;
5074 }
5075
eaeba653
PB		 5076 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
5077 return ret;
f1a1a356
GH		 5078}
5079
5080void qmp_chardev_remove(const char *id, Error **errp)
5081{
0ec7b3e7 5082 Chardev *chr;
f1a1a356
GH		 5083
5084 chr = qemu_chr_find(id);
8108fd3e 5085 if (chr == NULL) {
f1a1a356
GH		 5086 error_setg(errp, "Chardev '%s' not found", id);
5087 return;
5088 }
a4afa548 5089 if (qemu_chr_is_busy(chr)) {
f1a1a356
GH		 5090 error_setg(errp, "Chardev '%s' is busy", id);
5091 return;
5092 }
5ebd6703 5093 if (qemu_chr_replay(chr)) {
33577b47
PD		 5094 error_setg(errp,
5095 "Chardev '%s' cannot be unplugged in record/replay mode", id);
5096 return;
5097 }
f1a1a356
GH		 5098 qemu_chr_delete(chr);
5099}
d654f34e 5100
aa5cb7f5 5101void qemu_chr_cleanup(void)
c1111a24 5102{
0ec7b3e7 5103 Chardev *chr, *tmp;
c1111a24
MAL		 5104
5105 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
5106 qemu_chr_delete(chr);
5107 }
5108}
5109
d654f34e
AL		 5110static void register_types(void)
5111{
777357d7
MAL		 5112 static const struct {
5113 const CharDriver *driver;
5114 const TypeInfo *type;
5115 } chardevs[] = {
5116 { &null_driver, &char_null_type_info },
5117 { &socket_driver, &char_socket_type_info },
5118 { &udp_driver, &char_udp_type_info },
5119 { &ringbuf_driver, &char_ringbuf_type_info },
5120 { &file_driver, &char_file_type_info },
5121 { &stdio_driver, &char_stdio_type_info },
b68e956a 5122#ifdef HAVE_CHARDEV_SERIAL
777357d7 5123 { &serial_driver, &char_serial_type_info },
6511d396 5124#endif
38bfb1a6 5125#ifdef HAVE_CHARDEV_PARPORT
777357d7 5126 { &parallel_driver, &char_parallel_type_info },
38bfb1a6 5127#endif
c2e75a43 5128#ifdef HAVE_CHARDEV_PTY
777357d7 5129 { &pty_driver, &char_pty_type_info },
c2e75a43 5130#endif
122e5ed4 5131#ifdef _WIN32
777357d7 5132 { &console_driver, &char_console_type_info },
122e5ed4 5133#endif
777357d7
MAL		 5134 { &pipe_driver, &char_pipe_type_info },
5135 { &mux_driver, &char_mux_type_info },
5136 { &memory_driver, &char_memory_type_info }
0b812f31 5137 };
b68e956a 5138 int i;
0b812f31 5139
777357d7
MAL		 5140 type_register_static(&char_type_info);
5141#ifndef _WIN32
5142 type_register_static(&char_fd_type_info);
5143#else
5144 type_register_static(&char_win_type_info);
5145 type_register_static(&char_win_stdio_type_info);
5146#endif
5147 for (i = 0; i < ARRAY_SIZE(chardevs); i++) {
5148 type_register_static(chardevs[i].type);
5149 register_char_driver(chardevs[i].driver);
0b812f31
MAL		 5150 }
5151
7b7ab18d
MR		 5152 /* this must be done after machine init, since we register FEs with muxes
5153 * as part of realize functions like serial_isa_realizefn when -nographic
5154 * is specified
5155 */
5156 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 5157}
5158
5159type_init(register_types);
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