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char: make some qemu_chr_fe skip if no driver
[qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
37f9e0a2 35#include "qapi/clone-visitor.h"
cfb429cb 36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
517b3d40 42#include "qemu/help_option.h"
6f97dba0 43
6f97dba0
AL		 44#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
6f97dba0 50#include <sys/ioctl.h>
24646c7e 51#include <sys/resource.h>
6f97dba0
AL		 52#include <sys/socket.h>
53#include <netinet/in.h>
24646c7e 54#include <net/if.h>
24646c7e 55#include <arpa/inet.h>
6f97dba0
AL		 56#include <netdb.h>
57#include <sys/select.h>
71e72a19 58#ifdef CONFIG_BSD
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
6f97dba0
AL		 72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
c4095726 90#define TCP_MAX_FDS 16
9bd7854e 91
6dfa8298
MAL		 92typedef struct MuxDriver MuxDriver;
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
72cf2d4f
BS		 160static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
161 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 162
d0d7708b
DB		 163static void qemu_chr_free_common(CharDriverState *chr);
164
165CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 166{
167 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 168 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 169
170 if (backend->has_logfile) {
171 int flags = O_WRONLY | O_CREAT;
172 if (backend->has_logappend &&
173 backend->logappend) {
174 flags |= O_APPEND;
175 } else {
176 flags |= O_TRUNC;
177 }
178 chr->logfd = qemu_open(backend->logfile, flags, 0666);
179 if (chr->logfd < 0) {
180 error_setg_errno(errp, errno,
181 "Unable to open logfile %s",
182 backend->logfile);
183 g_free(chr);
184 return NULL;
185 }
186 } else {
187 chr->logfd = -1;
188 }
189
db39fcf1
PB		 190 return chr;
191}
192
a425d23f 193void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 194{
73cdf3f2
AG		 195 /* Keep track if the char device is open */
196 switch (event) {
197 case CHR_EVENT_OPENED:
16665b94 198 s->be_open = 1;
73cdf3f2
AG		 199 break;
200 case CHR_EVENT_CLOSED:
16665b94 201 s->be_open = 0;
73cdf3f2
AG		 202 break;
203 }
204
6f97dba0
AL		 205 if (!s->chr_event)
206 return;
207 s->chr_event(s->handler_opaque, event);
208}
209
fee204fd 210void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 211{
bd5c51ee 212 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 213}
214
d0d7708b
DB		 215
216/* Not reporting errors from writing to logfile, as logs are
217 * defined to be "best effort" only */
218static void qemu_chr_fe_write_log(CharDriverState *s,
219 const uint8_t *buf, size_t len)
220{
221 size_t done = 0;
222 ssize_t ret;
223
224 if (s->logfd < 0) {
225 return;
226 }
227
228 while (done < len) {
53628efb
DB		 229 retry:
230 ret = write(s->logfd, buf + done, len - done);
231 if (ret == -1 && errno == EAGAIN) {
232 g_usleep(100);
233 goto retry;
234 }
d0d7708b
DB		 235
236 if (ret <= 0) {
237 return;
238 }
239 done += ret;
240 }
241}
242
33577b47
PD		 243static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
244{
245 int res = 0;
246 *offset = 0;
247
248 qemu_mutex_lock(&s->chr_write_lock);
249 while (*offset < len) {
53628efb
DB		 250 retry:
251 res = s->chr_write(s, buf + *offset, len - *offset);
252 if (res < 0 && errno == EAGAIN) {
253 g_usleep(100);
254 goto retry;
255 }
33577b47
PD		 256
257 if (res <= 0) {
258 break;
259 }
260
261 *offset += res;
262 }
263 if (*offset > 0) {
264 qemu_chr_fe_write_log(s, buf, *offset);
265 }
266 qemu_mutex_unlock(&s->chr_write_lock);
267
268 return res;
269}
270
5345fdb4 271int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len)
6f97dba0 272{
5345fdb4 273 CharDriverState *s = be->chr;
9005b2a7
PB		 274 int ret;
275
fa394ed6
MAL		 276 if (!s) {
277 return 0;
278 }
279
33577b47
PD		 280 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
281 int offset;
282 replay_char_write_event_load(&ret, &offset);
283 assert(offset <= len);
284 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
285 return ret;
286 }
287
9005b2a7
PB		 288 qemu_mutex_lock(&s->chr_write_lock);
289 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 290
291 if (ret > 0) {
292 qemu_chr_fe_write_log(s, buf, ret);
293 }
294
9005b2a7 295 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 296
297 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
298 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
299 }
300
9005b2a7 301 return ret;
6f97dba0
AL		 302}
303
5345fdb4 304static int qemu_chr_write_all(CharDriverState *s, const uint8_t *buf, int len)
cd18720a 305{
33577b47
PD		 306 int offset;
307 int res;
cd18720a 308
33577b47
PD		 309 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
310 replay_char_write_event_load(&res, &offset);
311 assert(offset <= len);
312 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
313 return res;
314 }
cd18720a 315
33577b47 316 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 317
33577b47
PD		 318 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
319 replay_char_write_event_save(res, offset);
cd18720a
AL		 320 }
321
9005b2a7
PB		 322 if (res < 0) {
323 return res;
324 }
cd18720a
AL		 325 return offset;
326}
327
5345fdb4 328int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len)
7b0bfdf5 329{
5345fdb4
MAL		 330 CharDriverState *s = be->chr;
331
fa394ed6
MAL		 332 if (!s) {
333 return 0;
334 }
335
5345fdb4
MAL		 336 return qemu_chr_write_all(s, buf, len);
337}
338
339int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len)
340{
341 CharDriverState *s = be->chr;
7b0bfdf5
NN		 342 int offset = 0, counter = 10;
343 int res;
344
fa394ed6 345 if (!s || !s->chr_sync_read) {
7b0bfdf5
NN		 346 return 0;
347 }
fa394ed6 348
33577b47
PD		 349 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
350 return replay_char_read_all_load(buf);
351 }
7b0bfdf5
NN		 352
353 while (offset < len) {
53628efb
DB		 354 retry:
355 res = s->chr_sync_read(s, buf + offset, len - offset);
356 if (res == -1 && errno == EAGAIN) {
357 g_usleep(100);
358 goto retry;
359 }
7b0bfdf5
NN		 360
361 if (res == 0) {
362 break;
363 }
364
365 if (res < 0) {
33577b47
PD		 366 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
367 replay_char_read_all_save_error(res);
368 }
7b0bfdf5
NN		 369 return res;
370 }
371
372 offset += res;
373
374 if (!counter--) {
375 break;
376 }
377 }
378
33577b47
PD		 379 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
380 replay_char_read_all_save_buf(buf, offset);
381 }
7b0bfdf5
NN		 382 return offset;
383}
384
5345fdb4 385int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg)
6f97dba0 386{
5345fdb4 387 CharDriverState *s = be->chr;
33577b47 388 int res;
fa394ed6
MAL		 389
390 if (!s || !s->chr_ioctl || s->replay) {
33577b47
PD		 391 res = -ENOTSUP;
392 } else {
393 res = s->chr_ioctl(s, cmd, arg);
394 }
395
396 return res;
6f97dba0
AL		 397}
398
909cda12 399int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 400{
401 if (!s->chr_can_read)
402 return 0;
403 return s->chr_can_read(s->handler_opaque);
404}
405
33577b47 406void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 407{
ac310734
SW		 408 if (s->chr_read) {
409 s->chr_read(s->handler_opaque, buf, len);
410 }
6f97dba0
AL		 411}
412
33577b47
PD		 413void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
414{
415 if (s->replay) {
416 if (replay_mode == REPLAY_MODE_PLAY) {
417 return;
418 }
419 replay_chr_be_write(s, buf, len);
420 } else {
421 qemu_chr_be_write_impl(s, buf, len);
422 }
423}
424
5345fdb4 425int qemu_chr_fe_get_msgfd(CharBackend *be)
7d174059 426{
5345fdb4 427 CharDriverState *s = be->chr;
c76bf6bb 428 int fd;
5345fdb4 429 int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1;
fa394ed6 430 if (s && s->replay) {
33577b47
PD		 431 fprintf(stderr,
432 "Replay: get msgfd is not supported for serial devices yet\n");
433 exit(1);
434 }
435 return res;
c76bf6bb
NN		 436}
437
5345fdb4 438int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len)
c76bf6bb 439{
5345fdb4
MAL		 440 CharDriverState *s = be->chr;
441
fa394ed6
MAL		 442 if (!s) {
443 return -1;
444 }
445
c76bf6bb 446 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 447}
448
5345fdb4 449int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num)
d39aac7a 450{
5345fdb4
MAL		 451 CharDriverState *s = be->chr;
452
fa394ed6
MAL		 453 if (!s) {
454 return -1;
455 }
456
d39aac7a
NN		 457 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
458}
459
13661089
DB		 460int qemu_chr_add_client(CharDriverState *s, int fd)
461{
462 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
463}
464
5345fdb4 465void qemu_chr_fe_accept_input(CharBackend *be)
6f97dba0 466{
5345fdb4
MAL		 467 CharDriverState *s = be->chr;
468
fa394ed6
MAL		 469 if (!s) {
470 return;
471 }
472
6f97dba0
AL		 473 if (s->chr_accept_input)
474 s->chr_accept_input(s);
98c8ee1d 475 qemu_notify_event();
6f97dba0
AL		 476}
477
5345fdb4 478void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
6f97dba0 479{
9bd7854e 480 char buf[READ_BUF_LEN];
6f97dba0
AL		 481 va_list ap;
482 va_start(ap, fmt);
483 vsnprintf(buf, sizeof(buf), fmt, ap);
90f998f5
DB		 484 /* XXX this blocks entire thread. Rewrite to use
485 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 486 qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 487 va_end(ap);
488}
489
386a5a1e 490static void remove_fd_in_watch(CharDriverState *chr);
6dfa8298
MAL		 491static int mux_chr_new_handler_tag(CharDriverState *chr, Error **errp);
492static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context);
493static void mux_set_focus(MuxDriver *d, int focus);
494
6f97dba0
AL		 495static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
496{
497 return len;
498}
499
0d64992b
PB		 500static CharDriverState *qemu_chr_open_null(const char *id,
501 ChardevBackend *backend,
502 ChardevReturn *ret,
503 Error **errp)
6f97dba0
AL		 504{
505 CharDriverState *chr;
32bafa8f 506 ChardevCommon *common = backend->u.null.data;
6f97dba0 507
d0d7708b
DB		 508 chr = qemu_chr_alloc(common, errp);
509 if (!chr) {
510 return NULL;
511 }
6f97dba0 512 chr->chr_write = null_chr_write;
bd5c51ee 513 chr->explicit_be_open = true;
1f51470d 514 return chr;
6f97dba0
AL		 515}
516
517/* MUX driver for serial I/O splitting */
6f97dba0
AL		 518#define MAX_MUX 4
519#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
520#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
6dfa8298 521struct MuxDriver {
7b27a769 522 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 523 IOReadHandler *chr_read[MAX_MUX];
524 IOEventHandler *chr_event[MAX_MUX];
525 void *ext_opaque[MAX_MUX];
ecb672d1 526 CharBackend chr;
799f1f23 527 int focus;
6f97dba0
AL		 528 int mux_cnt;
529 int term_got_escape;
530 int max_size;
a80bf99f
AL		 531 /* Intermediate input buffer allows to catch escape sequences even if the
532 currently active device is not accepting any input - but only until it
533 is full as well. */
534 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
535 int prod[MAX_MUX];
536 int cons[MAX_MUX];
2d22959d 537 int timestamps;
9005b2a7
PB		 538
539 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 540 int linestart;
2d22959d 541 int64_t timestamps_start;
6dfa8298 542};
6f97dba0 543
9005b2a7 544/* Called with chr_write_lock held. */
6f97dba0
AL		 545static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
546{
547 MuxDriver *d = chr->opaque;
548 int ret;
2d22959d 549 if (!d->timestamps) {
5345fdb4 550 ret = qemu_chr_fe_write(&d->chr, buf, len);
6f97dba0
AL		 551 } else {
552 int i;
553
554 ret = 0;
4ab312f7
JK		 555 for (i = 0; i < len; i++) {
556 if (d->linestart) {
6f97dba0
AL		 557 char buf1[64];
558 int64_t ti;
559 int secs;
560
bc72ad67 561 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 562 if (d->timestamps_start == -1)
563 d->timestamps_start = ti;
564 ti -= d->timestamps_start;
a4bb1db8 565 secs = ti / 1000;
6f97dba0
AL		 566 snprintf(buf1, sizeof(buf1),
567 "[%02d:%02d:%02d.%03d] ",
568 secs / 3600,
569 (secs / 60) % 60,
570 secs % 60,
a4bb1db8 571 (int)(ti % 1000));
90f998f5
DB		 572 /* XXX this blocks entire thread. Rewrite to use
573 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4
MAL		 574 qemu_chr_fe_write_all(&d->chr,
575 (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 576 d->linestart = 0;
577 }
5345fdb4 578 ret += qemu_chr_fe_write(&d->chr, buf + i, 1);
4ab312f7
JK		 579 if (buf[i] == '\n') {
580 d->linestart = 1;
6f97dba0
AL		 581 }
582 }
583 }
584 return ret;
585}
586
587static const char * const mux_help[] = {
588 "% h print this help\n\r",
589 "% x exit emulator\n\r",
590 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 591 "% t toggle console timestamps\n\r",
6f97dba0
AL		 592 "% b send break (magic sysrq)\n\r",
593 "% c switch between console and monitor\n\r",
594 "% % sends %\n\r",
595 NULL
596};
597
598int term_escape_char = 0x01; /* ctrl-a is used for escape */
599static void mux_print_help(CharDriverState *chr)
600{
601 int i, j;
602 char ebuf[15] = "Escape-Char";
603 char cbuf[50] = "\n\r";
604
605 if (term_escape_char > 0 && term_escape_char < 26) {
606 snprintf(cbuf, sizeof(cbuf), "\n\r");
607 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
608 } else {
609 snprintf(cbuf, sizeof(cbuf),
610 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
611 term_escape_char);
612 }
90f998f5
DB		 613 /* XXX this blocks entire thread. Rewrite to use
614 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 615 qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 616 for (i = 0; mux_help[i] != NULL; i++) {
617 for (j=0; mux_help[i][j] != '\0'; j++) {
618 if (mux_help[i][j] == '%')
5345fdb4 619 qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 620 else
5345fdb4 621 qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 622 }
623 }
624}
625
2724b180
AL		 626static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
627{
628 if (d->chr_event[mux_nr])
629 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
630}
631
6f97dba0
AL		 632static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
633{
634 if (d->term_got_escape) {
635 d->term_got_escape = 0;
636 if (ch == term_escape_char)
637 goto send_char;
638 switch(ch) {
639 case '?':
640 case 'h':
641 mux_print_help(chr);
642 break;
643 case 'x':
644 {
645 const char *term = "QEMU: Terminated\n\r";
5345fdb4 646 qemu_chr_write_all(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 647 exit(0);
648 break;
649 }
650 case 's':
da31d594 651 blk_commit_all();
6f97dba0
AL		 652 break;
653 case 'b':
a425d23f 654 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 655 break;
656 case 'c':
6dfa8298 657 assert(d->mux_cnt > 0); /* handler registered with first fe */
6f97dba0 658 /* Switch to the next registered device */
6dfa8298 659 mux_set_focus(d, (d->focus + 1) % d->mux_cnt);
6f97dba0 660 break;
2d22959d
JK		 661 case 't':
662 d->timestamps = !d->timestamps;
663 d->timestamps_start = -1;
4ab312f7 664 d->linestart = 0;
2d22959d 665 break;
6f97dba0
AL		 666 }
667 } else if (ch == term_escape_char) {
668 d->term_got_escape = 1;
669 } else {
670 send_char:
671 return 1;
672 }
673 return 0;
674}
675
676static void mux_chr_accept_input(CharDriverState *chr)
677{
6f97dba0 678 MuxDriver *d = chr->opaque;
799f1f23 679 int m = d->focus;
6f97dba0 680
a80bf99f 681 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 682 d->chr_can_read[m] &&
683 d->chr_can_read[m](d->ext_opaque[m])) {
684 d->chr_read[m](d->ext_opaque[m],
a80bf99f 685 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 686 }
687}
688
689static int mux_chr_can_read(void *opaque)
690{
691 CharDriverState *chr = opaque;
692 MuxDriver *d = chr->opaque;
799f1f23 693 int m = d->focus;
6f97dba0 694
a80bf99f 695 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 696 return 1;
a80bf99f
AL		 697 if (d->chr_can_read[m])
698 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 699 return 0;
700}
701
702static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
703{
704 CharDriverState *chr = opaque;
705 MuxDriver *d = chr->opaque;
799f1f23 706 int m = d->focus;
6f97dba0
AL		 707 int i;
708
709 mux_chr_accept_input (opaque);
710
711 for(i = 0; i < size; i++)
712 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 713 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 714 d->chr_can_read[m] &&
715 d->chr_can_read[m](d->ext_opaque[m]))
716 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
717 else
a80bf99f 718 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 719 }
720}
721
722static void mux_chr_event(void *opaque, int event)
723{
724 CharDriverState *chr = opaque;
725 MuxDriver *d = chr->opaque;
726 int i;
727
728 /* Send the event to all registered listeners */
729 for (i = 0; i < d->mux_cnt; i++)
2724b180 730 mux_chr_send_event(d, i, event);
6f97dba0
AL		 731}
732
e92aa36a 733static void mux_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 734 GMainContext *context,
735 int tag)
6f97dba0
AL		 736{
737 MuxDriver *d = chr->opaque;
738
6dfa8298
MAL		 739 assert(tag >= 0);
740 assert(tag < d->mux_cnt);
741
742 d->ext_opaque[tag] = chr->handler_opaque;
743 d->chr_can_read[tag] = chr->chr_can_read;
744 d->chr_read[tag] = chr->chr_read;
745 d->chr_event[tag] = chr->chr_event;
6f97dba0
AL		 746}
747
7b7ab18d
MR		 748static bool muxes_realized;
749
750/**
751 * Called after processing of default and command-line-specified
752 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
753 * to a mux chardev. This is done here to ensure that
754 * output/prompts/banners are only displayed for the FE that has
755 * focus when initial command-line processing/machine init is
756 * completed.
757 *
758 * After this point, any new FE attached to any new or existing
759 * mux will receive CHR_EVENT_OPENED notifications for the BE
760 * immediately.
761 */
762static void muxes_realize_done(Notifier *notifier, void *unused)
763{
764 CharDriverState *chr;
765
766 QTAILQ_FOREACH(chr, &chardevs, next) {
767 if (chr->is_mux) {
768 MuxDriver *d = chr->opaque;
769 int i;
770
771 /* send OPENED to all already-attached FEs */
772 for (i = 0; i < d->mux_cnt; i++) {
773 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
774 }
775 /* mark mux as OPENED so any new FEs will immediately receive
776 * OPENED event
777 */
778 qemu_chr_be_generic_open(chr);
779 }
780 }
781 muxes_realized = true;
782}
783
784static Notifier muxes_realize_notify = {
785 .notify = muxes_realize_done,
786};
787
3f0838ab
KB		 788static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
789{
790 MuxDriver *d = s->opaque;
5345fdb4
MAL		 791 CharDriverState *chr = qemu_chr_fe_get_driver(&d->chr);
792
793 return chr->chr_add_watch(chr, cond);
3f0838ab
KB		 794}
795
1371a369
MAL		 796static void mux_chr_close(struct CharDriverState *chr)
797{
798 MuxDriver *d = chr->opaque;
799
c39860e6 800 qemu_chr_fe_deinit(&d->chr);
1371a369
MAL		 801 g_free(d);
802}
803
6dfa8298
MAL		 804static int mux_chr_new_handler_tag(CharDriverState *chr, Error **errp)
805{
806 MuxDriver *d = chr->opaque;
807
808 if (d->mux_cnt >= MAX_MUX) {
809 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
810 return -1;
811 }
812
813 return d->mux_cnt++;
814}
815
816static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context)
817{
818 MuxDriver *d = chr->opaque;
819
820 /* Fix up the real driver with mux routines */
ecb672d1
MAL		 821 qemu_chr_fe_set_handlers(&d->chr,
822 mux_chr_can_read,
823 mux_chr_read,
824 mux_chr_event,
825 chr,
826 context);
6dfa8298
MAL		 827}
828
829static void mux_set_focus(MuxDriver *d, int focus)
830{
831 assert(focus >= 0);
832 assert(focus < d->mux_cnt);
833
834 if (d->focus != -1) {
835 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
836 }
837
838 d->focus = focus;
839 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
840}
841
3c0e5a4a
PB		 842static CharDriverState *qemu_chr_open_mux(const char *id,
843 ChardevBackend *backend,
844 ChardevReturn *ret, Error **errp)
6f97dba0 845{
32bafa8f 846 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 847 CharDriverState *chr, *drv;
6f97dba0 848 MuxDriver *d;
f194a1ae 849 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 850
3c0e5a4a
PB		 851 drv = qemu_chr_find(mux->chardev);
852 if (drv == NULL) {
853 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
854 return NULL;
855 }
856
d0d7708b
DB		 857 chr = qemu_chr_alloc(common, errp);
858 if (!chr) {
859 return NULL;
860 }
2d528d45 861 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 862
863 chr->opaque = d;
799f1f23 864 d->focus = -1;
1371a369 865 chr->chr_close = mux_chr_close;
6f97dba0
AL		 866 chr->chr_write = mux_chr_write;
867 chr->chr_update_read_handler = mux_chr_update_read_handler;
868 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 869 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 870 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 871 if (drv->chr_add_watch) {
872 chr->chr_add_watch = mux_chr_add_watch;
873 }
7b7ab18d
MR		 874 /* only default to opened state if we've realized the initial
875 * set of muxes
876 */
877 chr->explicit_be_open = muxes_realized ? 0 : 1;
878 chr->is_mux = 1;
5345fdb4 879 if (!qemu_chr_fe_init(&d->chr, drv, errp)) {
ecb672d1
MAL		 880 qemu_chr_free(chr);
881 return NULL;
882 }
73cdf3f2 883
6f97dba0
AL		 884 return chr;
885}
886
94a40fc5
MAL		 887CharDriverState *qemu_chr_fe_get_driver(CharBackend *be)
888{
889 return be->chr;
890}
891
892bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp)
893{
894 int tag = 0;
895
896 if (s->is_mux) {
897 tag = mux_chr_new_handler_tag(s, errp);
898 if (tag < 0) {
899 return false;
900 }
901 }
902
903 b->tag = tag;
904 b->chr = s;
905
906 return true;
907}
908
c39860e6
MAL		 909void qemu_chr_fe_deinit(CharBackend *b)
910{
911 assert(b);
912
913 if (b->chr) {
914 qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL);
915 b->chr->avail_connections++;
916 b->chr = NULL;
917 }
918}
919
94a40fc5
MAL		 920void qemu_chr_fe_set_handlers(CharBackend *b,
921 IOCanReadHandler *fd_can_read,
922 IOReadHandler *fd_read,
923 IOEventHandler *fd_event,
924 void *opaque,
925 GMainContext *context)
926{
386f07d1
MAL		 927 CharDriverState *s;
928 int fe_open;
929
930 s = b->chr;
931 if (!s) {
94a40fc5
MAL		 932 return;
933 }
934
386f07d1
MAL		 935 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
936 fe_open = 0;
937 remove_fd_in_watch(s);
938 } else {
939 fe_open = 1;
940 }
941 s->chr_can_read = fd_can_read;
942 s->chr_read = fd_read;
943 s->chr_event = fd_event;
944 s->handler_opaque = opaque;
945 if (s->chr_update_read_handler) {
946 s->chr_update_read_handler(s, context, b->tag);
947 }
948
949 if (!s->explicit_fe_open) {
950 qemu_chr_fe_set_open(b, fe_open);
951 }
94a40fc5 952
386f07d1
MAL		 953 if (fe_open) {
954 qemu_chr_fe_take_focus(b);
955 /* We're connecting to an already opened device, so let's make sure we
956 also get the open event */
957 if (s->be_open) {
958 qemu_chr_be_generic_open(s);
959 }
960 }
961
962 if (s->is_mux) {
963 mux_chr_set_handlers(s, context);
94a40fc5
MAL		 964 }
965}
966
967void qemu_chr_fe_take_focus(CharBackend *b)
968{
fa394ed6
MAL		 969 if (!b->chr) {
970 return;
971 }
972
94a40fc5
MAL		 973 if (b->chr->is_mux) {
974 mux_set_focus(b->chr->opaque, b->tag);
975 }
976}
6f97dba0 977
96c63847
AL		 978typedef struct IOWatchPoll
979{
d185c094
PB		 980 GSource parent;
981
9894dc0c 982 QIOChannel *ioc;
96c63847 983 GSource *src;
96c63847
AL		 984
985 IOCanReadHandler *fd_can_read;
1e885b25 986 GSourceFunc fd_read;
96c63847 987 void *opaque;
e92aa36a 988 GMainContext *context;
96c63847
AL		 989} IOWatchPoll;
990
96c63847
AL		 991static IOWatchPoll *io_watch_poll_from_source(GSource *source)
992{
d185c094 993 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 994}
995
e92aa36a
ZC		 996static gboolean io_watch_poll_prepare(GSource *source,
997 gint *timeout_)
96c63847
AL		 998{
999 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 1000 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 1001 bool was_active = iwp->src != NULL;
d185c094 1002 if (was_active == now_active) {
96c63847
AL		 1003 return FALSE;
1004 }
1005
d185c094 1006 if (now_active) {
9894dc0c
DB		 1007 iwp->src = qio_channel_create_watch(
1008 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 1009 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
e92aa36a 1010 g_source_attach(iwp->src, iwp->context);
d185c094 1011 } else {
1e885b25
PB		 1012 g_source_destroy(iwp->src);
1013 g_source_unref(iwp->src);
1014 iwp->src = NULL;
d185c094
PB		 1015 }
1016 return FALSE;
96c63847
AL		 1017}
1018
1019static gboolean io_watch_poll_check(GSource *source)
1020{
d185c094 1021 return FALSE;
96c63847
AL		 1022}
1023
1024static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
1025 gpointer user_data)
1026{
d185c094 1027 abort();
96c63847
AL		 1028}
1029
1030static void io_watch_poll_finalize(GSource *source)
1031{
2b316774
PB		 1032 /* Due to a glib bug, removing the last reference to a source
1033 * inside a finalize callback causes recursive locking (and a
1034 * deadlock). This is not a problem inside other callbacks,
1035 * including dispatch callbacks, so we call io_remove_watch_poll
1036 * to remove this source. At this point, iwp->src must
1037 * be NULL, or we would leak it.
1038 *
1039 * This would be solved much more elegantly by child sources,
1040 * but we support older glib versions that do not have them.
1041 */
96c63847 1042 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 1043 assert(iwp->src == NULL);
96c63847
AL		 1044}
1045
1046static GSourceFuncs io_watch_poll_funcs = {
1047 .prepare = io_watch_poll_prepare,
1048 .check = io_watch_poll_check,
1049 .dispatch = io_watch_poll_dispatch,
1050 .finalize = io_watch_poll_finalize,
1051};
1052
1053/* Can only be used for read */
9894dc0c 1054static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 1055 IOCanReadHandler *fd_can_read,
9894dc0c 1056 QIOChannelFunc fd_read,
e92aa36a
ZC		 1057 gpointer user_data,
1058 GMainContext *context)
96c63847
AL		 1059{
1060 IOWatchPoll *iwp;
0ca5aa4f 1061 int tag;
96c63847 1062
e92aa36a
ZC		 1063 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
1064 sizeof(IOWatchPoll));
96c63847
AL		 1065 iwp->fd_can_read = fd_can_read;
1066 iwp->opaque = user_data;
9894dc0c 1067 iwp->ioc = ioc;
1e885b25
PB		 1068 iwp->fd_read = (GSourceFunc) fd_read;
1069 iwp->src = NULL;
e92aa36a 1070 iwp->context = context;
96c63847 1071
e92aa36a 1072 tag = g_source_attach(&iwp->parent, context);
0ca5aa4f
PB		 1073 g_source_unref(&iwp->parent);
1074 return tag;
96c63847
AL		 1075}
1076
2b316774
PB		 1077static void io_remove_watch_poll(guint tag)
1078{
1079 GSource *source;
1080 IOWatchPoll *iwp;
1081
1082 g_return_if_fail (tag > 0);
1083
1084 source = g_main_context_find_source_by_id(NULL, tag);
1085 g_return_if_fail (source != NULL);
1086
1087 iwp = io_watch_poll_from_source(source);
1088 if (iwp->src) {
1089 g_source_destroy(iwp->src);
1090 g_source_unref(iwp->src);
1091 iwp->src = NULL;
1092 }
1093 g_source_destroy(&iwp->parent);
1094}
1095
26da70c7
AS		 1096static void remove_fd_in_watch(CharDriverState *chr)
1097{
1098 if (chr->fd_in_tag) {
1099 io_remove_watch_poll(chr->fd_in_tag);
1100 chr->fd_in_tag = 0;
1101 }
1102}
1103
96c63847 1104
9894dc0c
DB		 1105static int io_channel_send_full(QIOChannel *ioc,
1106 const void *buf, size_t len,
1107 int *fds, size_t nfds)
76a9644b 1108{
9894dc0c 1109 size_t offset = 0;
76a9644b 1110
9894dc0c
DB		 1111 while (offset < len) {
1112 ssize_t ret = 0;
1113 struct iovec iov = { .iov_base = (char *)buf + offset,
1114 .iov_len = len - offset };
1115
1116 ret = qio_channel_writev_full(
1117 ioc, &iov, 1,
1118 fds, nfds, NULL);
1119 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 1120 if (offset) {
1121 return offset;
1122 }
76a9644b 1123
e046fb44
DB		 1124 errno = EAGAIN;
1125 return -1;
1126 } else if (ret < 0) {
9894dc0c
DB		 1127 errno = EINVAL;
1128 return -1;
1129 }
76a9644b 1130
9894dc0c
DB		 1131 offset += ret;
1132 }
76a9644b 1133
9894dc0c 1134 return offset;
76a9644b
AL		 1135}
1136
9894dc0c 1137
0ff0fad2 1138#ifndef _WIN32
9894dc0c 1139static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 1140{
9894dc0c 1141 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 1142}
96c63847 1143
44ab9ed4 1144
a29753f8
AL		 1145typedef struct FDCharDriver {
1146 CharDriverState *chr;
9894dc0c 1147 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 1148 int max_size;
1149} FDCharDriver;
1150
9005b2a7 1151/* Called with chr_write_lock held. */
6f97dba0
AL		 1152static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1153{
1154 FDCharDriver *s = chr->opaque;
a29753f8 1155
9894dc0c 1156 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1157}
1158
9894dc0c 1159static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1160{
1161 CharDriverState *chr = opaque;
1162 FDCharDriver *s = chr->opaque;
a29753f8 1163 int len;
9bd7854e 1164 uint8_t buf[READ_BUF_LEN];
9894dc0c 1165 ssize_t ret;
6f97dba0
AL		 1166
1167 len = sizeof(buf);
a29753f8 1168 if (len > s->max_size) {
6f97dba0 1169 len = s->max_size;
a29753f8
AL		 1170 }
1171 if (len == 0) {
cdbf6e16 1172 return TRUE;
a29753f8
AL		 1173 }
1174
9894dc0c
DB		 1175 ret = qio_channel_read(
1176 chan, (gchar *)buf, len, NULL);
1177 if (ret == 0) {
26da70c7 1178 remove_fd_in_watch(chr);
a425d23f 1179 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1180 return FALSE;
6f97dba0 1181 }
9894dc0c
DB		 1182 if (ret > 0) {
1183 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1184 }
a29753f8
AL		 1185
1186 return TRUE;
1187}
1188
1189static int fd_chr_read_poll(void *opaque)
1190{
1191 CharDriverState *chr = opaque;
1192 FDCharDriver *s = chr->opaque;
1193
1194 s->max_size = qemu_chr_be_can_write(chr);
1195 return s->max_size;
6f97dba0
AL		 1196}
1197
23673ca7
AL		 1198static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1199{
1200 FDCharDriver *s = chr->opaque;
9894dc0c 1201 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1202}
1203
e92aa36a 1204static void fd_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 1205 GMainContext *context,
1206 int tag)
6f97dba0
AL		 1207{
1208 FDCharDriver *s = chr->opaque;
1209
26da70c7 1210 remove_fd_in_watch(chr);
9894dc0c
DB		 1211 if (s->ioc_in) {
1212 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1213 fd_chr_read_poll,
e92aa36a
ZC		 1214 fd_chr_read, chr,
1215 context);
6f97dba0
AL		 1216 }
1217}
1218
1219static void fd_chr_close(struct CharDriverState *chr)
1220{
1221 FDCharDriver *s = chr->opaque;
1222
26da70c7 1223 remove_fd_in_watch(chr);
9894dc0c
DB		 1224 if (s->ioc_in) {
1225 object_unref(OBJECT(s->ioc_in));
a29753f8 1226 }
9894dc0c
DB		 1227 if (s->ioc_out) {
1228 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1229 }
1230
7267c094 1231 g_free(s);
a425d23f 1232 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1233}
1234
1235/* open a character device to a unix fd */
d0d7708b
DB		 1236static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1237 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1238{
1239 CharDriverState *chr;
1240 FDCharDriver *s;
1241
d0d7708b
DB		 1242 chr = qemu_chr_alloc(backend, errp);
1243 if (!chr) {
1244 return NULL;
1245 }
2d528d45 1246 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1247 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1248 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1249 qemu_set_nonblock(fd_out);
a29753f8 1250 s->chr = chr;
6f97dba0 1251 chr->opaque = s;
23673ca7 1252 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1253 chr->chr_write = fd_chr_write;
1254 chr->chr_update_read_handler = fd_chr_update_read_handler;
1255 chr->chr_close = fd_chr_close;
1256
6f97dba0
AL		 1257 return chr;
1258}
1259
20cbe7a2
PB		 1260static CharDriverState *qemu_chr_open_pipe(const char *id,
1261 ChardevBackend *backend,
1262 ChardevReturn *ret,
1263 Error **errp)
6f97dba0 1264{
32bafa8f 1265 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1266 int fd_in, fd_out;
0ff0fad2
DB		 1267 char *filename_in;
1268 char *filename_out;
548cbb36 1269 const char *filename = opts->device;
f194a1ae 1270 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1271
0ff0fad2
DB		 1272
1273 filename_in = g_strdup_printf("%s.in", filename);
1274 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1275 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1276 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1277 g_free(filename_in);
1278 g_free(filename_out);
6f97dba0
AL		 1279 if (fd_in < 0 || fd_out < 0) {
1280 if (fd_in >= 0)
1281 close(fd_in);
1282 if (fd_out >= 0)
1283 close(fd_out);
b181e047 1284 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1285 if (fd_in < 0) {
20cbe7a2 1286 error_setg_file_open(errp, errno, filename);
1f51470d 1287 return NULL;
a89dd6c3 1288 }
6f97dba0 1289 }
d0d7708b 1290 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1291}
1292
6f97dba0
AL		 1293/* init terminal so that we can grab keys */
1294static struct termios oldtty;
1295static int old_fd0_flags;
c88930a6 1296static bool stdio_in_use;
bb002513 1297static bool stdio_allow_signal;
e76d4420
GH		 1298static bool stdio_echo_state;
1299
1300static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1301
1302static void term_exit(void)
1303{
1304 tcsetattr (0, TCSANOW, &oldtty);
1305 fcntl(0, F_SETFL, old_fd0_flags);
1306}
1307
e76d4420
GH		 1308static void term_stdio_handler(int sig)
1309{
1310 /* restore echo after resume from suspend. */
1311 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1312}
1313
bb002513 1314static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1315{
1316 struct termios tty;
1317
e76d4420 1318 stdio_echo_state = echo;
0369364b 1319 tty = oldtty;
bb002513
PB		 1320 if (!echo) {
1321 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1322 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1323 tty.c_oflag |= OPOST;
1324 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1325 tty.c_cflag &= ~(CSIZE|PARENB);
1326 tty.c_cflag |= CS8;
1327 tty.c_cc[VMIN] = 1;
1328 tty.c_cc[VTIME] = 0;
1329 }
bb002513 1330 if (!stdio_allow_signal)
6f97dba0 1331 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1332
1333 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1334}
1335
1336static void qemu_chr_close_stdio(struct CharDriverState *chr)
1337{
1338 term_exit();
6f97dba0
AL		 1339 fd_chr_close(chr);
1340}
1341
8c84b25d
PB		 1342static CharDriverState *qemu_chr_open_stdio(const char *id,
1343 ChardevBackend *backend,
1344 ChardevReturn *ret,
1345 Error **errp)
6f97dba0 1346{
32bafa8f 1347 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1348 CharDriverState *chr;
e76d4420 1349 struct sigaction act;
f194a1ae 1350 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1351
ab51b1d5 1352 if (is_daemonized()) {
8c84b25d 1353 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1354 return NULL;
1355 }
c88930a6
LL		 1356
1357 if (stdio_in_use) {
8c84b25d
PB		 1358 error_setg(errp, "cannot use stdio by multiple character devices");
1359 return NULL;
c88930a6
LL		 1360 }
1361
1362 stdio_in_use = true;
ed7a1540 1363 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1364 tcgetattr(0, &oldtty);
4ff12bdb 1365 qemu_set_nonblock(0);
ed7a1540 1366 atexit(term_exit);
0369364b 1367
e76d4420
GH		 1368 memset(&act, 0, sizeof(act));
1369 act.sa_handler = term_stdio_handler;
1370 sigaction(SIGCONT, &act, NULL);
1371
d0d7708b 1372 chr = qemu_chr_open_fd(0, 1, common, errp);
71200fb9
LM		 1373 if (!chr) {
1374 return NULL;
1375 }
6f97dba0 1376 chr->chr_close = qemu_chr_close_stdio;
bb002513 1377 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1378 if (opts->has_signal) {
1379 stdio_allow_signal = opts->signal;
1380 }
5345fdb4 1381 qemu_chr_set_echo_stdio(chr, false);
6f97dba0 1382
1f51470d 1383 return chr;
6f97dba0
AL		 1384}
1385
6f97dba0 1386#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1387 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1388 || defined(__GLIBC__)
6f97dba0 1389
d809ab95
PB		 1390#define HAVE_CHARDEV_SERIAL 1
1391#define HAVE_CHARDEV_PTY 1
e551498e 1392
6f97dba0 1393typedef struct {
9894dc0c 1394 QIOChannel *ioc;
6f97dba0 1395 int read_bytes;
9005b2a7
PB		 1396
1397 /* Protected by the CharDriverState chr_write_lock. */
1398 int connected;
8aa33caf 1399 guint timer_tag;
7b3621f4 1400 guint open_tag;
6f97dba0
AL		 1401} PtyCharDriver;
1402
9005b2a7 1403static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1404static void pty_chr_state(CharDriverState *chr, int connected);
1405
8aa33caf
AL		 1406static gboolean pty_chr_timer(gpointer opaque)
1407{
1408 struct CharDriverState *chr = opaque;
1409 PtyCharDriver *s = chr->opaque;
1410
9005b2a7 1411 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1412 s->timer_tag = 0;
7b3621f4 1413 s->open_tag = 0;
b0d768c3
GH		 1414 if (!s->connected) {
1415 /* Next poll ... */
9005b2a7 1416 pty_chr_update_read_handler_locked(chr);
b0d768c3 1417 }
9005b2a7 1418 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1419 return FALSE;
1420}
1421
9005b2a7 1422/* Called with chr_write_lock held. */
8aa33caf
AL		 1423static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1424{
1425 PtyCharDriver *s = chr->opaque;
1426
1427 if (s->timer_tag) {
1428 g_source_remove(s->timer_tag);
1429 s->timer_tag = 0;
1430 }
1431
1432 if (ms == 1000) {
1433 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1434 } else {
1435 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1436 }
1437}
1438
9005b2a7
PB		 1439/* Called with chr_write_lock held. */
1440static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1441{
1442 PtyCharDriver *s = chr->opaque;
1443 GPollFD pfd;
c1f24489 1444 int rc;
9894dc0c 1445 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1446
9894dc0c 1447 pfd.fd = fioc->fd;
1bb7fe72
PB		 1448 pfd.events = G_IO_OUT;
1449 pfd.revents = 0;
c1f24489
PB		 1450 do {
1451 rc = g_poll(&pfd, 1, 0);
1452 } while (rc == -1 && errno == EINTR);
1453 assert(rc >= 0);
1454
1bb7fe72
PB		 1455 if (pfd.revents & G_IO_HUP) {
1456 pty_chr_state(chr, 0);
1457 } else {
1458 pty_chr_state(chr, 1);
1459 }
1460}
1461
e92aa36a 1462static void pty_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 1463 GMainContext *context,
1464 int tag)
9005b2a7
PB		 1465{
1466 qemu_mutex_lock(&chr->chr_write_lock);
1467 pty_chr_update_read_handler_locked(chr);
1468 qemu_mutex_unlock(&chr->chr_write_lock);
1469}
1470
1471/* Called with chr_write_lock held. */
6f97dba0
AL		 1472static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1473{
1474 PtyCharDriver *s = chr->opaque;
1475
1476 if (!s->connected) {
1477 /* guest sends data, check for (re-)connect */
9005b2a7 1478 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1479 if (!s->connected) {
1480 return 0;
1481 }
6f97dba0 1482 }
9894dc0c 1483 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1484}
1485
e6a87ed8
AL		 1486static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1487{
1488 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1489 if (!s->connected) {
1490 return NULL;
1491 }
9894dc0c 1492 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1493}
1494
6f97dba0
AL		 1495static int pty_chr_read_poll(void *opaque)
1496{
1497 CharDriverState *chr = opaque;
1498 PtyCharDriver *s = chr->opaque;
1499
909cda12 1500 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1501 return s->read_bytes;
1502}
1503
9894dc0c 1504static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1505{
1506 CharDriverState *chr = opaque;
1507 PtyCharDriver *s = chr->opaque;
9894dc0c 1508 gsize len;
9bd7854e 1509 uint8_t buf[READ_BUF_LEN];
9894dc0c 1510 ssize_t ret;
6f97dba0
AL		 1511
1512 len = sizeof(buf);
1513 if (len > s->read_bytes)
1514 len = s->read_bytes;
cdbf6e16
PB		 1515 if (len == 0) {
1516 return TRUE;
1517 }
9894dc0c
DB		 1518 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1519 if (ret <= 0) {
6f97dba0 1520 pty_chr_state(chr, 0);
093d3a20
AL		 1521 return FALSE;
1522 } else {
6f97dba0 1523 pty_chr_state(chr, 1);
9894dc0c 1524 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1525 }
093d3a20 1526 return TRUE;
6f97dba0
AL		 1527}
1528
7b3621f4
PB		 1529static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1530{
1531 CharDriverState *chr = opaque;
1532 PtyCharDriver *s = chr->opaque;
1533
1534 s->open_tag = 0;
1535 qemu_chr_be_generic_open(chr);
1536 return FALSE;
1537}
1538
9005b2a7 1539/* Called with chr_write_lock held. */
6f97dba0
AL		 1540static void pty_chr_state(CharDriverState *chr, int connected)
1541{
1542 PtyCharDriver *s = chr->opaque;
1543
1544 if (!connected) {
7b3621f4
PB		 1545 if (s->open_tag) {
1546 g_source_remove(s->open_tag);
1547 s->open_tag = 0;
1548 }
26da70c7 1549 remove_fd_in_watch(chr);
6f97dba0 1550 s->connected = 0;
6f97dba0
AL		 1551 /* (re-)connect poll interval for idle guests: once per second.
1552 * We check more frequently in case the guests sends data to
1553 * the virtual device linked to our pty. */
8aa33caf 1554 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1555 } else {
85a67692
PB		 1556 if (s->timer_tag) {
1557 g_source_remove(s->timer_tag);
1558 s->timer_tag = 0;
1559 }
1560 if (!s->connected) {
7b3621f4 1561 g_assert(s->open_tag == 0);
85a67692 1562 s->connected = 1;
7b3621f4 1563 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1564 }
1565 if (!chr->fd_in_tag) {
9894dc0c
DB		 1566 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1567 pty_chr_read_poll,
e92aa36a
ZC		 1568 pty_chr_read,
1569 chr, NULL);
85a67692 1570 }
6f97dba0
AL		 1571 }
1572}
1573
6f97dba0
AL		 1574static void pty_chr_close(struct CharDriverState *chr)
1575{
1576 PtyCharDriver *s = chr->opaque;
1577
7b3621f4
PB		 1578 qemu_mutex_lock(&chr->chr_write_lock);
1579 pty_chr_state(chr, 0);
9894dc0c 1580 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1581 if (s->timer_tag) {
1582 g_source_remove(s->timer_tag);
910b6368 1583 s->timer_tag = 0;
8aa33caf 1584 }
7b3621f4 1585 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1586 g_free(s);
a425d23f 1587 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1588}
1589
e68c5958 1590static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1591 ChardevBackend *backend,
1592 ChardevReturn *ret,
1593 Error **errp)
6f97dba0
AL		 1594{
1595 CharDriverState *chr;
1596 PtyCharDriver *s;
e68c5958 1597 int master_fd, slave_fd;
6f97dba0 1598 char pty_name[PATH_MAX];
32bafa8f 1599 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1600
4efeabbb
MT		 1601 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1602 if (master_fd < 0) {
c2e75a43 1603 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1604 return NULL;
6f97dba0
AL		 1605 }
1606
837a183f 1607 close(slave_fd);
fac6688a 1608 qemu_set_nonblock(master_fd);
6f97dba0 1609
d0d7708b
DB		 1610 chr = qemu_chr_alloc(common, errp);
1611 if (!chr) {
1612 close(master_fd);
1613 return NULL;
1614 }
a4e26048 1615
4efeabbb
MT		 1616 chr->filename = g_strdup_printf("pty:%s", pty_name);
1617 ret->pty = g_strdup(pty_name);
e68c5958 1618 ret->has_pty = true;
58650218 1619
e68c5958 1620 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1621 pty_name, id);
6f97dba0 1622
2d528d45 1623 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1624 chr->opaque = s;
1625 chr->chr_write = pty_chr_write;
1626 chr->chr_update_read_handler = pty_chr_update_read_handler;
1627 chr->chr_close = pty_chr_close;
e6a87ed8 1628 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1629 chr->explicit_be_open = true;
6f97dba0 1630
9894dc0c 1631 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1632 s->timer_tag = 0;
6f97dba0 1633
1f51470d 1634 return chr;
6f97dba0
AL		 1635}
1636
1637static void tty_serial_init(int fd, int speed,
1638 int parity, int data_bits, int stop_bits)
1639{
1640 struct termios tty;
1641 speed_t spd;
1642
1643#if 0
1644 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1645 speed, parity, data_bits, stop_bits);
1646#endif
1647 tcgetattr (fd, &tty);
1648
45eea13b
SW		 1649#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1650 speed = speed * 10 / 11;
1651 do {
1652 check_speed(50);
1653 check_speed(75);
1654 check_speed(110);
1655 check_speed(134);
1656 check_speed(150);
1657 check_speed(200);
1658 check_speed(300);
1659 check_speed(600);
1660 check_speed(1200);
1661 check_speed(1800);
1662 check_speed(2400);
1663 check_speed(4800);
1664 check_speed(9600);
1665 check_speed(19200);
1666 check_speed(38400);
1667 /* Non-Posix values follow. They may be unsupported on some systems. */
1668 check_speed(57600);
1669 check_speed(115200);
1670#ifdef B230400
1671 check_speed(230400);
1672#endif
1673#ifdef B460800
1674 check_speed(460800);
1675#endif
1676#ifdef B500000
1677 check_speed(500000);
1678#endif
1679#ifdef B576000
1680 check_speed(576000);
1681#endif
1682#ifdef B921600
1683 check_speed(921600);
1684#endif
1685#ifdef B1000000
1686 check_speed(1000000);
1687#endif
1688#ifdef B1152000
1689 check_speed(1152000);
1690#endif
1691#ifdef B1500000
1692 check_speed(1500000);
1693#endif
1694#ifdef B2000000
1695 check_speed(2000000);
1696#endif
1697#ifdef B2500000
1698 check_speed(2500000);
1699#endif
1700#ifdef B3000000
1701 check_speed(3000000);
1702#endif
1703#ifdef B3500000
1704 check_speed(3500000);
1705#endif
1706#ifdef B4000000
1707 check_speed(4000000);
1708#endif
6f97dba0 1709 spd = B115200;
45eea13b 1710 } while (0);
6f97dba0
AL		 1711
1712 cfsetispeed(&tty, spd);
1713 cfsetospeed(&tty, spd);
1714
1715 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1716 |INLCR|IGNCR|ICRNL|IXON);
1717 tty.c_oflag |= OPOST;
1718 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1719 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1720 switch(data_bits) {
1721 default:
1722 case 8:
1723 tty.c_cflag |= CS8;
1724 break;
1725 case 7:
1726 tty.c_cflag |= CS7;
1727 break;
1728 case 6:
1729 tty.c_cflag |= CS6;
1730 break;
1731 case 5:
1732 tty.c_cflag |= CS5;
1733 break;
1734 }
1735 switch(parity) {
1736 default:
1737 case 'N':
1738 break;
1739 case 'E':
1740 tty.c_cflag |= PARENB;
1741 break;
1742 case 'O':
1743 tty.c_cflag |= PARENB | PARODD;
1744 break;
1745 }
1746 if (stop_bits == 2)
1747 tty.c_cflag |= CSTOPB;
1748
1749 tcsetattr (fd, TCSANOW, &tty);
1750}
1751
1752static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1753{
1754 FDCharDriver *s = chr->opaque;
9894dc0c 1755 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1756
1757 switch(cmd) {
1758 case CHR_IOCTL_SERIAL_SET_PARAMS:
1759 {
1760 QEMUSerialSetParams *ssp = arg;
9894dc0c 1761 tty_serial_init(fioc->fd,
a29753f8 1762 ssp->speed, ssp->parity,
6f97dba0
AL		 1763 ssp->data_bits, ssp->stop_bits);
1764 }
1765 break;
1766 case CHR_IOCTL_SERIAL_SET_BREAK:
1767 {
1768 int enable = *(int *)arg;
a29753f8 1769 if (enable) {
9894dc0c 1770 tcsendbreak(fioc->fd, 1);
a29753f8 1771 }
6f97dba0
AL		 1772 }
1773 break;
1774 case CHR_IOCTL_SERIAL_GET_TIOCM:
1775 {
1776 int sarg = 0;
1777 int *targ = (int *)arg;
9894dc0c 1778 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1779 *targ = 0;
b4abdfa4 1780 if (sarg & TIOCM_CTS)
6f97dba0 1781 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1782 if (sarg & TIOCM_CAR)
6f97dba0 1783 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1784 if (sarg & TIOCM_DSR)
6f97dba0 1785 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1786 if (sarg & TIOCM_RI)
6f97dba0 1787 *targ |= CHR_TIOCM_RI;
b4abdfa4 1788 if (sarg & TIOCM_DTR)
6f97dba0 1789 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1790 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1791 *targ |= CHR_TIOCM_RTS;
1792 }
1793 break;
1794 case CHR_IOCTL_SERIAL_SET_TIOCM:
1795 {
1796 int sarg = *(int *)arg;
1797 int targ = 0;
9894dc0c 1798 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1799 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1800 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1801 if (sarg & CHR_TIOCM_CTS)
1802 targ |= TIOCM_CTS;
1803 if (sarg & CHR_TIOCM_CAR)
1804 targ |= TIOCM_CAR;
1805 if (sarg & CHR_TIOCM_DSR)
1806 targ |= TIOCM_DSR;
1807 if (sarg & CHR_TIOCM_RI)
1808 targ |= TIOCM_RI;
1809 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1810 targ |= TIOCM_DTR;
b4abdfa4 1811 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1812 targ |= TIOCM_RTS;
9894dc0c 1813 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1814 }
1815 break;
1816 default:
1817 return -ENOTSUP;
1818 }
1819 return 0;
1820}
1821
4266a134
DA		 1822static void qemu_chr_close_tty(CharDriverState *chr)
1823{
4266a134 1824 fd_chr_close(chr);
4266a134
DA		 1825}
1826
d0d7708b
DB		 1827static CharDriverState *qemu_chr_open_tty_fd(int fd,
1828 ChardevCommon *backend,
1829 Error **errp)
d59044ef
GH		 1830{
1831 CharDriverState *chr;
1832
1833 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1834 chr = qemu_chr_open_fd(fd, fd, backend, errp);
71200fb9
LM		 1835 if (!chr) {
1836 return NULL;
1837 }
d59044ef
GH		 1838 chr->chr_ioctl = tty_serial_ioctl;
1839 chr->chr_close = qemu_chr_close_tty;
1840 return chr;
1841}
6f97dba0
AL		 1842#endif /* __linux__ || __sun__ */
1843
1844#if defined(__linux__)
e551498e
GH		 1845
1846#define HAVE_CHARDEV_PARPORT 1
1847
6f97dba0
AL		 1848typedef struct {
1849 int fd;
1850 int mode;
1851} ParallelCharDriver;
1852
1853static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1854{
1855 if (s->mode != mode) {
1856 int m = mode;
1857 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1858 return 0;
1859 s->mode = mode;
1860 }
1861 return 1;
1862}
1863
1864static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1865{
1866 ParallelCharDriver *drv = chr->opaque;
1867 int fd = drv->fd;
1868 uint8_t b;
1869
1870 switch(cmd) {
1871 case CHR_IOCTL_PP_READ_DATA:
1872 if (ioctl(fd, PPRDATA, &b) < 0)
1873 return -ENOTSUP;
1874 *(uint8_t *)arg = b;
1875 break;
1876 case CHR_IOCTL_PP_WRITE_DATA:
1877 b = *(uint8_t *)arg;
1878 if (ioctl(fd, PPWDATA, &b) < 0)
1879 return -ENOTSUP;
1880 break;
1881 case CHR_IOCTL_PP_READ_CONTROL:
1882 if (ioctl(fd, PPRCONTROL, &b) < 0)
1883 return -ENOTSUP;
1884 /* Linux gives only the lowest bits, and no way to know data
1885 direction! For better compatibility set the fixed upper
1886 bits. */
1887 *(uint8_t *)arg = b | 0xc0;
1888 break;
1889 case CHR_IOCTL_PP_WRITE_CONTROL:
1890 b = *(uint8_t *)arg;
1891 if (ioctl(fd, PPWCONTROL, &b) < 0)
1892 return -ENOTSUP;
1893 break;
1894 case CHR_IOCTL_PP_READ_STATUS:
1895 if (ioctl(fd, PPRSTATUS, &b) < 0)
1896 return -ENOTSUP;
1897 *(uint8_t *)arg = b;
1898 break;
1899 case CHR_IOCTL_PP_DATA_DIR:
1900 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1901 return -ENOTSUP;
1902 break;
1903 case CHR_IOCTL_PP_EPP_READ_ADDR:
1904 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1905 struct ParallelIOArg *parg = arg;
1906 int n = read(fd, parg->buffer, parg->count);
1907 if (n != parg->count) {
1908 return -EIO;
1909 }
1910 }
1911 break;
1912 case CHR_IOCTL_PP_EPP_READ:
1913 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1914 struct ParallelIOArg *parg = arg;
1915 int n = read(fd, parg->buffer, parg->count);
1916 if (n != parg->count) {
1917 return -EIO;
1918 }
1919 }
1920 break;
1921 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1922 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1923 struct ParallelIOArg *parg = arg;
1924 int n = write(fd, parg->buffer, parg->count);
1925 if (n != parg->count) {
1926 return -EIO;
1927 }
1928 }
1929 break;
1930 case CHR_IOCTL_PP_EPP_WRITE:
1931 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1932 struct ParallelIOArg *parg = arg;
1933 int n = write(fd, parg->buffer, parg->count);
1934 if (n != parg->count) {
1935 return -EIO;
1936 }
1937 }
1938 break;
1939 default:
1940 return -ENOTSUP;
1941 }
1942 return 0;
1943}
1944
1945static void pp_close(CharDriverState *chr)
1946{
1947 ParallelCharDriver *drv = chr->opaque;
1948 int fd = drv->fd;
1949
1950 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1951 ioctl(fd, PPRELEASE);
1952 close(fd);
7267c094 1953 g_free(drv);
a425d23f 1954 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1955}
1956
d0d7708b
DB		 1957static CharDriverState *qemu_chr_open_pp_fd(int fd,
1958 ChardevCommon *backend,
1959 Error **errp)
6f97dba0
AL		 1960{
1961 CharDriverState *chr;
1962 ParallelCharDriver *drv;
6f97dba0
AL		 1963
1964 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1965 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1966 close(fd);
1f51470d 1967 return NULL;
6f97dba0
AL		 1968 }
1969
d0d7708b
DB		 1970 chr = qemu_chr_alloc(backend, errp);
1971 if (!chr) {
1972 return NULL;
1973 }
27ef9cb0
PB		 1974
1975 drv = g_new0(ParallelCharDriver, 1);
1976 chr->opaque = drv;
6f97dba0
AL		 1977 chr->chr_write = null_chr_write;
1978 chr->chr_ioctl = pp_ioctl;
1979 chr->chr_close = pp_close;
27ef9cb0
PB		 1980
1981 drv->fd = fd;
1982 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1983
1f51470d 1984 return chr;
6f97dba0
AL		 1985}
1986#endif /* __linux__ */
1987
a167ba50 1988#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1989
1990#define HAVE_CHARDEV_PARPORT 1
1991
6972f935
BS		 1992static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1993{
e0efb993 1994 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1995 uint8_t b;
1996
1997 switch(cmd) {
1998 case CHR_IOCTL_PP_READ_DATA:
1999 if (ioctl(fd, PPIGDATA, &b) < 0)
2000 return -ENOTSUP;
2001 *(uint8_t *)arg = b;
2002 break;
2003 case CHR_IOCTL_PP_WRITE_DATA:
2004 b = *(uint8_t *)arg;
2005 if (ioctl(fd, PPISDATA, &b) < 0)
2006 return -ENOTSUP;
2007 break;
2008 case CHR_IOCTL_PP_READ_CONTROL:
2009 if (ioctl(fd, PPIGCTRL, &b) < 0)
2010 return -ENOTSUP;
2011 *(uint8_t *)arg = b;
2012 break;
2013 case CHR_IOCTL_PP_WRITE_CONTROL:
2014 b = *(uint8_t *)arg;
2015 if (ioctl(fd, PPISCTRL, &b) < 0)
2016 return -ENOTSUP;
2017 break;
2018 case CHR_IOCTL_PP_READ_STATUS:
2019 if (ioctl(fd, PPIGSTATUS, &b) < 0)
2020 return -ENOTSUP;
2021 *(uint8_t *)arg = b;
2022 break;
2023 default:
2024 return -ENOTSUP;
2025 }
2026 return 0;
2027}
2028
d0d7708b 2029static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 2030 ChardevCommon *backend,
d0d7708b 2031 Error **errp)
6972f935
BS		 2032{
2033 CharDriverState *chr;
6972f935 2034
0850d49c 2035 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 2036 if (!chr) {
2037 return NULL;
2038 }
e0efb993 2039 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 2040 chr->chr_write = null_chr_write;
2041 chr->chr_ioctl = pp_ioctl;
bd5c51ee 2042 chr->explicit_be_open = true;
1f51470d 2043 return chr;
6972f935
BS		 2044}
2045#endif
2046
6f97dba0
AL		 2047#else /* _WIN32 */
2048
d809ab95
PB		 2049#define HAVE_CHARDEV_SERIAL 1
2050
6f97dba0
AL		 2051typedef struct {
2052 int max_size;
2053 HANDLE hcom, hrecv, hsend;
9005b2a7 2054 OVERLAPPED orecv;
6f97dba0
AL		 2055 BOOL fpipe;
2056 DWORD len;
9005b2a7
PB		 2057
2058 /* Protected by the CharDriverState chr_write_lock. */
2059 OVERLAPPED osend;
6f97dba0
AL		 2060} WinCharState;
2061
db418a0a
FC		 2062typedef struct {
2063 HANDLE hStdIn;
2064 HANDLE hInputReadyEvent;
2065 HANDLE hInputDoneEvent;
2066 HANDLE hInputThread;
2067 uint8_t win_stdio_buf;
2068} WinStdioCharState;
2069
6f97dba0
AL		 2070#define NSENDBUF 2048
2071#define NRECVBUF 2048
2072#define MAXCONNECT 1
2073#define NTIMEOUT 5000
2074
2075static int win_chr_poll(void *opaque);
2076static int win_chr_pipe_poll(void *opaque);
2077
2078static void win_chr_close(CharDriverState *chr)
2079{
2080 WinCharState *s = chr->opaque;
2081
2082 if (s->hsend) {
2083 CloseHandle(s->hsend);
2084 s->hsend = NULL;
2085 }
2086 if (s->hrecv) {
2087 CloseHandle(s->hrecv);
2088 s->hrecv = NULL;
2089 }
2090 if (s->hcom) {
2091 CloseHandle(s->hcom);
2092 s->hcom = NULL;
2093 }
2094 if (s->fpipe)
2095 qemu_del_polling_cb(win_chr_pipe_poll, chr);
2096 else
2097 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 2098
a425d23f 2099 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2100}
2101
6511d396 2102static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 2103{
2104 WinCharState *s = chr->opaque;
2105 COMMCONFIG comcfg;
2106 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
2107 COMSTAT comstat;
2108 DWORD size;
2109 DWORD err;
2110
2111 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2112 if (!s->hsend) {
6511d396 2113 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2114 goto fail;
2115 }
2116 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2117 if (!s->hrecv) {
6511d396 2118 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2119 goto fail;
2120 }
2121
2122 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
2123 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
2124 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 2125 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 2126 s->hcom = NULL;
2127 goto fail;
2128 }
2129
2130 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 2131 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 2132 goto fail;
2133 }
2134
2135 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
2136 size = sizeof(COMMCONFIG);
2137 GetDefaultCommConfig(filename, &comcfg, &size);
2138 comcfg.dcb.DCBlength = sizeof(DCB);
2139 CommConfigDialog(filename, NULL, &comcfg);
2140
2141 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 2142 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 2143 goto fail;
2144 }
2145
2146 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 2147 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 2148 goto fail;
2149 }
2150
2151 cto.ReadIntervalTimeout = MAXDWORD;
2152 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 2153 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 2154 goto fail;
2155 }
2156
2157 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2158 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2159 goto fail;
2160 }
2161 qemu_add_polling_cb(win_chr_poll, chr);
2162 return 0;
2163
2164 fail:
2165 win_chr_close(chr);
2166 return -1;
2167}
2168
9005b2a7 2169/* Called with chr_write_lock held. */
6f97dba0
AL		 2170static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2171{
2172 WinCharState *s = chr->opaque;
2173 DWORD len, ret, size, err;
2174
2175 len = len1;
2176 ZeroMemory(&s->osend, sizeof(s->osend));
2177 s->osend.hEvent = s->hsend;
2178 while (len > 0) {
2179 if (s->hsend)
2180 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2181 else
2182 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2183 if (!ret) {
2184 err = GetLastError();
2185 if (err == ERROR_IO_PENDING) {
2186 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2187 if (ret) {
2188 buf += size;
2189 len -= size;
2190 } else {
2191 break;
2192 }
2193 } else {
2194 break;
2195 }
2196 } else {
2197 buf += size;
2198 len -= size;
2199 }
2200 }
2201 return len1 - len;
2202}
2203
2204static int win_chr_read_poll(CharDriverState *chr)
2205{
2206 WinCharState *s = chr->opaque;
2207
909cda12 2208 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2209 return s->max_size;
2210}
2211
2212static void win_chr_readfile(CharDriverState *chr)
2213{
2214 WinCharState *s = chr->opaque;
2215 int ret, err;
9bd7854e 2216 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2217 DWORD size;
2218
2219 ZeroMemory(&s->orecv, sizeof(s->orecv));
2220 s->orecv.hEvent = s->hrecv;
2221 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2222 if (!ret) {
2223 err = GetLastError();
2224 if (err == ERROR_IO_PENDING) {
2225 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2226 }
2227 }
2228
2229 if (size > 0) {
fa5efccb 2230 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2231 }
2232}
2233
2234static void win_chr_read(CharDriverState *chr)
2235{
2236 WinCharState *s = chr->opaque;
2237
2238 if (s->len > s->max_size)
2239 s->len = s->max_size;
2240 if (s->len == 0)
2241 return;
2242
2243 win_chr_readfile(chr);
2244}
2245
2246static int win_chr_poll(void *opaque)
2247{
2248 CharDriverState *chr = opaque;
2249 WinCharState *s = chr->opaque;
2250 COMSTAT status;
2251 DWORD comerr;
2252
2253 ClearCommError(s->hcom, &comerr, &status);
2254 if (status.cbInQue > 0) {
2255 s->len = status.cbInQue;
2256 win_chr_read_poll(chr);
2257 win_chr_read(chr);
2258 return 1;
2259 }
2260 return 0;
2261}
2262
6511d396 2263static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2264 ChardevCommon *backend,
6511d396 2265 Error **errp)
6f97dba0
AL		 2266{
2267 CharDriverState *chr;
2268 WinCharState *s;
2269
d0d7708b
DB		 2270 chr = qemu_chr_alloc(backend, errp);
2271 if (!chr) {
2272 return NULL;
2273 }
2d528d45 2274 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2275 chr->opaque = s;
2276 chr->chr_write = win_chr_write;
2277 chr->chr_close = win_chr_close;
2278
6511d396 2279 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2280 g_free(s);
d0d7708b 2281 qemu_chr_free_common(chr);
1f51470d 2282 return NULL;
6f97dba0 2283 }
1f51470d 2284 return chr;
6f97dba0
AL		 2285}
2286
2287static int win_chr_pipe_poll(void *opaque)
2288{
2289 CharDriverState *chr = opaque;
2290 WinCharState *s = chr->opaque;
2291 DWORD size;
2292
2293 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2294 if (size > 0) {
2295 s->len = size;
2296 win_chr_read_poll(chr);
2297 win_chr_read(chr);
2298 return 1;
2299 }
2300 return 0;
2301}
2302
20cbe7a2
PB		 2303static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2304 Error **errp)
6f97dba0
AL		 2305{
2306 WinCharState *s = chr->opaque;
2307 OVERLAPPED ov;
2308 int ret;
2309 DWORD size;
0ff0fad2 2310 char *openname;
6f97dba0
AL		 2311
2312 s->fpipe = TRUE;
2313
2314 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2315 if (!s->hsend) {
20cbe7a2 2316 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2317 goto fail;
2318 }
2319 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2320 if (!s->hrecv) {
20cbe7a2 2321 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2322 goto fail;
2323 }
2324
0ff0fad2 2325 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2326 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2327 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2328 PIPE_WAIT,
2329 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2330 g_free(openname);
6f97dba0 2331 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2332 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2333 s->hcom = NULL;
2334 goto fail;
2335 }
2336
2337 ZeroMemory(&ov, sizeof(ov));
2338 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2339 ret = ConnectNamedPipe(s->hcom, &ov);
2340 if (ret) {
20cbe7a2 2341 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2342 goto fail;
2343 }
2344
2345 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2346 if (!ret) {
20cbe7a2 2347 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2348 if (ov.hEvent) {
2349 CloseHandle(ov.hEvent);
2350 ov.hEvent = NULL;
2351 }
2352 goto fail;
2353 }
2354
2355 if (ov.hEvent) {
2356 CloseHandle(ov.hEvent);
2357 ov.hEvent = NULL;
2358 }
2359 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2360 return 0;
2361
2362 fail:
2363 win_chr_close(chr);
2364 return -1;
2365}
2366
2367
20cbe7a2
PB		 2368static CharDriverState *qemu_chr_open_pipe(const char *id,
2369 ChardevBackend *backend,
2370 ChardevReturn *ret,
2371 Error **errp)
6f97dba0 2372{
32bafa8f 2373 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2374 const char *filename = opts->device;
6f97dba0
AL		 2375 CharDriverState *chr;
2376 WinCharState *s;
f194a1ae 2377 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2378
d0d7708b
DB		 2379 chr = qemu_chr_alloc(common, errp);
2380 if (!chr) {
2381 return NULL;
2382 }
2d528d45 2383 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2384 chr->opaque = s;
2385 chr->chr_write = win_chr_write;
2386 chr->chr_close = win_chr_close;
2387
20cbe7a2 2388 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2389 g_free(s);
d0d7708b 2390 qemu_chr_free_common(chr);
1f51470d 2391 return NULL;
6f97dba0 2392 }
1f51470d 2393 return chr;
6f97dba0
AL		 2394}
2395
d0d7708b
DB		 2396static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2397 ChardevCommon *backend,
2398 Error **errp)
6f97dba0
AL		 2399{
2400 CharDriverState *chr;
2401 WinCharState *s;
2402
d0d7708b
DB		 2403 chr = qemu_chr_alloc(backend, errp);
2404 if (!chr) {
2405 return NULL;
2406 }
2d528d45 2407 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2408 s->hcom = fd_out;
2409 chr->opaque = s;
2410 chr->chr_write = win_chr_write;
1f51470d 2411 return chr;
6f97dba0
AL		 2412}
2413
122e5ed4
PB		 2414static CharDriverState *qemu_chr_open_win_con(const char *id,
2415 ChardevBackend *backend,
2416 ChardevReturn *ret,
2417 Error **errp)
6f97dba0 2418{
32bafa8f 2419 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2420 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2421 common, errp);
6f97dba0
AL		 2422}
2423
db418a0a
FC		 2424static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2425{
2426 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2427 DWORD dwSize;
2428 int len1;
2429
2430 len1 = len;
2431
2432 while (len1 > 0) {
2433 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2434 break;
2435 }
2436 buf += dwSize;
2437 len1 -= dwSize;
2438 }
2439
2440 return len - len1;
2441}
2442
2443static void win_stdio_wait_func(void *opaque)
2444{
2445 CharDriverState *chr = opaque;
2446 WinStdioCharState *stdio = chr->opaque;
2447 INPUT_RECORD buf[4];
2448 int ret;
2449 DWORD dwSize;
2450 int i;
2451
dff7424d 2452 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2453
2454 if (!ret) {
2455 /* Avoid error storm */
2456 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2457 return;
2458 }
2459
2460 for (i = 0; i < dwSize; i++) {
2461 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2462
2463 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2464 int j;
2465 if (kev->uChar.AsciiChar != 0) {
2466 for (j = 0; j < kev->wRepeatCount; j++) {
2467 if (qemu_chr_be_can_write(chr)) {
2468 uint8_t c = kev->uChar.AsciiChar;
2469 qemu_chr_be_write(chr, &c, 1);
2470 }
2471 }
2472 }
2473 }
2474 }
2475}
2476
2477static DWORD WINAPI win_stdio_thread(LPVOID param)
2478{
2479 CharDriverState *chr = param;
2480 WinStdioCharState *stdio = chr->opaque;
2481 int ret;
2482 DWORD dwSize;
2483
2484 while (1) {
2485
2486 /* Wait for one byte */
2487 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2488
2489 /* Exit in case of error, continue if nothing read */
2490 if (!ret) {
2491 break;
2492 }
2493 if (!dwSize) {
2494 continue;
2495 }
2496
2497 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2498 if (stdio->win_stdio_buf == '\r') {
2499 continue;
2500 }
2501
2502 /* Signal the main thread and wait until the byte was eaten */
2503 if (!SetEvent(stdio->hInputReadyEvent)) {
2504 break;
2505 }
2506 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2507 != WAIT_OBJECT_0) {
2508 break;
2509 }
2510 }
2511
2512 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2513 return 0;
2514}
2515
2516static void win_stdio_thread_wait_func(void *opaque)
2517{
2518 CharDriverState *chr = opaque;
2519 WinStdioCharState *stdio = chr->opaque;
2520
2521 if (qemu_chr_be_can_write(chr)) {
2522 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2523 }
2524
2525 SetEvent(stdio->hInputDoneEvent);
2526}
2527
2528static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2529{
2530 WinStdioCharState *stdio = chr->opaque;
2531 DWORD dwMode = 0;
2532
2533 GetConsoleMode(stdio->hStdIn, &dwMode);
2534
2535 if (echo) {
2536 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2537 } else {
2538 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2539 }
2540}
2541
2542static void win_stdio_close(CharDriverState *chr)
2543{
2544 WinStdioCharState *stdio = chr->opaque;
2545
2546 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2547 CloseHandle(stdio->hInputReadyEvent);
2548 }
2549 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2550 CloseHandle(stdio->hInputDoneEvent);
2551 }
2552 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2553 TerminateThread(stdio->hInputThread, 0);
2554 }
2555
2556 g_free(chr->opaque);
db418a0a
FC		 2557}
2558
8c84b25d
PB		 2559static CharDriverState *qemu_chr_open_stdio(const char *id,
2560 ChardevBackend *backend,
2561 ChardevReturn *ret,
2562 Error **errp)
db418a0a
FC		 2563{
2564 CharDriverState *chr;
2565 WinStdioCharState *stdio;
2566 DWORD dwMode;
2567 int is_console = 0;
32bafa8f 2568 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2569
d0d7708b
DB		 2570 chr = qemu_chr_alloc(common, errp);
2571 if (!chr) {
2572 return NULL;
2573 }
2d528d45 2574 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2575
2576 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2577 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2578 error_setg(errp, "cannot open stdio: invalid handle");
2579 return NULL;
db418a0a
FC		 2580 }
2581
2582 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2583
2584 chr->opaque = stdio;
2585 chr->chr_write = win_stdio_write;
2586 chr->chr_close = win_stdio_close;
2587
ed7a1540
AL		 2588 if (is_console) {
2589 if (qemu_add_wait_object(stdio->hStdIn,
2590 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2591 error_setg(errp, "qemu_add_wait_object: failed");
2592 goto err1;
ed7a1540
AL		 2593 }
2594 } else {
2595 DWORD dwId;
2596
2597 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2598 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2599 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2600 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2601 error_setg(errp, "cannot create event");
2602 goto err2;
ed7a1540
AL		 2603 }
2604 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2605 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2606 error_setg(errp, "qemu_add_wait_object: failed");
2607 goto err2;
2608 }
2609 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2610 chr, 0, &dwId);
2611
2612 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2613 error_setg(errp, "cannot create stdio thread");
2614 goto err3;
db418a0a
FC		 2615 }
2616 }
2617
2618 dwMode |= ENABLE_LINE_INPUT;
2619
ed7a1540 2620 if (is_console) {
db418a0a
FC		 2621 /* set the terminal in raw mode */
2622 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2623 dwMode |= ENABLE_PROCESSED_INPUT;
2624 }
2625
2626 SetConsoleMode(stdio->hStdIn, dwMode);
2627
2628 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
5345fdb4 2629 qemu_chr_set_echo_win_stdio(chr, false);
db418a0a 2630
1f51470d 2631 return chr;
8c84b25d
PB		 2632
2633err3:
2634 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2635err2:
2636 CloseHandle(stdio->hInputReadyEvent);
2637 CloseHandle(stdio->hInputDoneEvent);
2638err1:
2639 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2640 return NULL;
db418a0a 2641}
6f97dba0
AL		 2642#endif /* !_WIN32 */
2643
2644/***********************************************************/
2645/* UDP Net console */
2646
2647typedef struct {
9894dc0c 2648 QIOChannel *ioc;
9bd7854e 2649 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2650 int bufcnt;
2651 int bufptr;
2652 int max_size;
2653} NetCharDriver;
2654
9005b2a7 2655/* Called with chr_write_lock held. */
6f97dba0
AL		 2656static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2657{
2658 NetCharDriver *s = chr->opaque;
76a9644b 2659
9894dc0c
DB		 2660 return qio_channel_write(
2661 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2662}
2663
2664static int udp_chr_read_poll(void *opaque)
2665{
2666 CharDriverState *chr = opaque;
2667 NetCharDriver *s = chr->opaque;
2668
909cda12 2669 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2670
2671 /* If there were any stray characters in the queue process them
2672 * first
2673 */
2674 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2675 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2676 s->bufptr++;
909cda12 2677 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2678 }
2679 return s->max_size;
2680}
2681
9894dc0c 2682static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2683{
2684 CharDriverState *chr = opaque;
2685 NetCharDriver *s = chr->opaque;
9894dc0c 2686 ssize_t ret;
6f97dba0 2687
cdbf6e16
PB		 2688 if (s->max_size == 0) {
2689 return TRUE;
2690 }
9894dc0c
DB		 2691 ret = qio_channel_read(
2692 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2693 if (ret <= 0) {
26da70c7 2694 remove_fd_in_watch(chr);
76a9644b
AL		 2695 return FALSE;
2696 }
9894dc0c 2697 s->bufcnt = ret;
6f97dba0
AL		 2698
2699 s->bufptr = 0;
2700 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2701 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2702 s->bufptr++;
909cda12 2703 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2704 }
76a9644b
AL		 2705
2706 return TRUE;
6f97dba0
AL		 2707}
2708
e92aa36a 2709static void udp_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 2710 GMainContext *context,
2711 int tag)
6f97dba0
AL		 2712{
2713 NetCharDriver *s = chr->opaque;
2714
26da70c7 2715 remove_fd_in_watch(chr);
9894dc0c
DB		 2716 if (s->ioc) {
2717 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2718 udp_chr_read_poll,
e92aa36a
ZC		 2719 udp_chr_read, chr,
2720 context);
6f97dba0
AL		 2721 }
2722}
2723
819f56b7
AL		 2724static void udp_chr_close(CharDriverState *chr)
2725{
2726 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2727
2728 remove_fd_in_watch(chr);
9894dc0c
DB		 2729 if (s->ioc) {
2730 object_unref(OBJECT(s->ioc));
819f56b7 2731 }
7267c094 2732 g_free(s);
a425d23f 2733 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2734}
2735
9894dc0c
DB		 2736static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2737 ChardevCommon *backend,
2738 Error **errp)
6f97dba0
AL		 2739{
2740 CharDriverState *chr = NULL;
2741 NetCharDriver *s = NULL;
6f97dba0 2742
d0d7708b
DB		 2743 chr = qemu_chr_alloc(backend, errp);
2744 if (!chr) {
2745 return NULL;
2746 }
2d528d45 2747 s = g_new0(NetCharDriver, 1);
6f97dba0 2748
9894dc0c 2749 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2750 s->bufcnt = 0;
2751 s->bufptr = 0;
2752 chr->opaque = s;
2753 chr->chr_write = udp_chr_write;
2754 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2755 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2756 /* be isn't opened until we get a connection */
2757 chr->explicit_be_open = true;
1f51470d 2758 return chr;
3ecc059d 2759}
6f97dba0 2760
6f97dba0
AL		 2761/***********************************************************/
2762/* TCP Net console */
2763
2764typedef struct {
a8fb5427
DB		 2765 QIOChannel *ioc; /* Client I/O channel */
2766 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2767 QIOChannelSocket *listen_ioc;
7ba9addc 2768 guint listen_tag;
a8fb5427 2769 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2770 int connected;
2771 int max_size;
2772 int do_telnetopt;
2773 int do_nodelay;
2774 int is_unix;
c76bf6bb 2775 int *read_msgfds;
9894dc0c 2776 size_t read_msgfds_num;
d39aac7a 2777 int *write_msgfds;
9894dc0c 2778 size_t write_msgfds_num;
cfb429cb
CM		 2779
2780 SocketAddress *addr;
2781 bool is_listen;
2782 bool is_telnet;
5dd1f02b
CM		 2783
2784 guint reconnect_timer;
2785 int64_t reconnect_time;
5008e5b7 2786 bool connect_err_reported;
6f97dba0
AL		 2787} TCPCharDriver;
2788
5dd1f02b
CM		 2789static gboolean socket_reconnect_timeout(gpointer opaque);
2790
2791static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2792{
2793 TCPCharDriver *s = chr->opaque;
2794 assert(s->connected == 0);
2795 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2796 socket_reconnect_timeout, chr);
2797}
2798
5008e5b7
CM		 2799static void check_report_connect_error(CharDriverState *chr,
2800 Error *err)
2801{
2802 TCPCharDriver *s = chr->opaque;
2803
2804 if (!s->connect_err_reported) {
2805 error_report("Unable to connect character device %s: %s",
2806 chr->label, error_get_pretty(err));
2807 s->connect_err_reported = true;
2808 }
2809 qemu_chr_socket_restart_timer(chr);
2810}
2811
9894dc0c
DB		 2812static gboolean tcp_chr_accept(QIOChannel *chan,
2813 GIOCondition cond,
2814 void *opaque);
d39aac7a 2815
9005b2a7 2816/* Called with chr_write_lock held. */
6f97dba0
AL		 2817static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2818{
2819 TCPCharDriver *s = chr->opaque;
2820 if (s->connected) {
9894dc0c
DB		 2821 int ret = io_channel_send_full(s->ioc, buf, len,
2822 s->write_msgfds,
2823 s->write_msgfds_num);
2824
2825 /* free the written msgfds, no matter what */
2826 if (s->write_msgfds_num) {
2827 g_free(s->write_msgfds);
2828 s->write_msgfds = 0;
2829 s->write_msgfds_num = 0;
d39aac7a 2830 }
9894dc0c
DB		 2831
2832 return ret;
455aa1e0 2833 } else {
6db0fdce 2834 /* XXX: indicate an error ? */
455aa1e0 2835 return len;
6f97dba0
AL		 2836 }
2837}
2838
2839static int tcp_chr_read_poll(void *opaque)
2840{
2841 CharDriverState *chr = opaque;
2842 TCPCharDriver *s = chr->opaque;
2843 if (!s->connected)
2844 return 0;
909cda12 2845 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2846 return s->max_size;
2847}
2848
2849#define IAC 255
2850#define IAC_BREAK 243
2851static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2852 TCPCharDriver *s,
2853 uint8_t *buf, int *size)
2854{
2855 /* Handle any telnet client's basic IAC options to satisfy char by
2856 * char mode with no echo. All IAC options will be removed from
2857 * the buf and the do_telnetopt variable will be used to track the
2858 * state of the width of the IAC information.
2859 *
2860 * IAC commands come in sets of 3 bytes with the exception of the
2861 * "IAC BREAK" command and the double IAC.
2862 */
2863
2864 int i;
2865 int j = 0;
2866
2867 for (i = 0; i < *size; i++) {
2868 if (s->do_telnetopt > 1) {
2869 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2870 /* Double IAC means send an IAC */
2871 if (j != i)
2872 buf[j] = buf[i];
2873 j++;
2874 s->do_telnetopt = 1;
2875 } else {
2876 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2877 /* Handle IAC break commands by sending a serial break */
a425d23f 2878 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2879 s->do_telnetopt++;
2880 }
2881 s->do_telnetopt++;
2882 }
2883 if (s->do_telnetopt >= 4) {
2884 s->do_telnetopt = 1;
2885 }
2886 } else {
2887 if ((unsigned char)buf[i] == IAC) {
2888 s->do_telnetopt = 2;
2889 } else {
2890 if (j != i)
2891 buf[j] = buf[i];
2892 j++;
2893 }
2894 }
2895 }
2896 *size = j;
2897}
2898
c76bf6bb 2899static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2900{
2901 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2902 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2903
c4095726
MT		 2904 assert(num <= TCP_MAX_FDS);
2905
c76bf6bb 2906 if (to_copy) {
d2fc39b4
SH		 2907 int i;
2908
c76bf6bb
NN		 2909 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2910
d2fc39b4
SH		 2911 /* Close unused fds */
2912 for (i = to_copy; i < s->read_msgfds_num; i++) {
2913 close(s->read_msgfds[i]);
2914 }
2915
c76bf6bb
NN		 2916 g_free(s->read_msgfds);
2917 s->read_msgfds = 0;
2918 s->read_msgfds_num = 0;
2919 }
2920
2921 return to_copy;
7d174059
MM		 2922}
2923
d39aac7a
NN		 2924static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2925{
2926 TCPCharDriver *s = chr->opaque;
2927
2928 /* clear old pending fd array */
ef1e1e07 2929 g_free(s->write_msgfds);
869a58af 2930 s->write_msgfds = NULL;
5b498459 2931 s->write_msgfds_num = 0;
d39aac7a 2932
5c7eaabf
MAL		 2933 if (!s->connected ||
2934 !qio_channel_has_feature(s->ioc,
2935 QIO_CHANNEL_FEATURE_FD_PASS)) {
2936 return -1;
2937 }
2938
d39aac7a 2939 if (num) {
2d528d45 2940 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2941 memcpy(s->write_msgfds, fds, num * sizeof(int));
2942 }
2943
2944 s->write_msgfds_num = num;
2945
2946 return 0;
2947}
2948
9894dc0c 2949static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2950{
2951 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2952 struct iovec iov = { .iov_base = buf, .iov_len = len };
2953 int ret;
2954 size_t i;
2955 int *msgfds = NULL;
2956 size_t msgfds_num = 0;
2957
2958 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2959 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2960 &msgfds, &msgfds_num,
2961 NULL);
2962 } else {
2963 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2964 NULL, NULL,
2965 NULL);
2966 }
7d174059 2967
b6572b4f
MAL		 2968 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2969 errno = EAGAIN;
2970 ret = -1;
2971 } else if (ret == -1) {
2972 errno = EIO;
2973 }
2974
9894dc0c 2975 if (msgfds_num) {
c76bf6bb
NN		 2976 /* close and clean read_msgfds */
2977 for (i = 0; i < s->read_msgfds_num; i++) {
2978 close(s->read_msgfds[i]);
2979 }
9b938c72 2980
c76bf6bb
NN		 2981 if (s->read_msgfds_num) {
2982 g_free(s->read_msgfds);
2983 }
2984
9894dc0c
DB		 2985 s->read_msgfds = msgfds;
2986 s->read_msgfds_num = msgfds_num;
7d174059 2987 }
7d174059 2988
9894dc0c
DB		 2989 for (i = 0; i < s->read_msgfds_num; i++) {
2990 int fd = s->read_msgfds[i];
2991 if (fd < 0) {
2992 continue;
2993 }
9977c894 2994
9894dc0c
DB		 2995 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2996 qemu_set_block(fd);
7d174059 2997
9894dc0c
DB		 2998#ifndef MSG_CMSG_CLOEXEC
2999 qemu_set_cloexec(fd);
06138651 3000#endif
06138651 3001 }
9977c894 3002
7d174059 3003 return ret;
9977c894 3004}
9977c894 3005
d3cc5bc4
AS		 3006static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
3007{
3008 TCPCharDriver *s = chr->opaque;
9894dc0c 3009 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 3010}
3011
5b498459 3012static void tcp_chr_free_connection(CharDriverState *chr)
7b0bfdf5
NN		 3013{
3014 TCPCharDriver *s = chr->opaque;
5b498459 3015 int i;
7b0bfdf5 3016
342f7a9d
MAL		 3017 if (!s->connected) {
3018 return;
3019 }
3020
5b498459
MAL		 3021 if (s->read_msgfds_num) {
3022 for (i = 0; i < s->read_msgfds_num; i++) {
3023 close(s->read_msgfds[i]);
3024 }
3025 g_free(s->read_msgfds);
3026 s->read_msgfds = NULL;
3027 s->read_msgfds_num = 0;
7b0bfdf5 3028 }
5b498459 3029
6167ebbd 3030 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 3031 remove_fd_in_watch(chr);
a8fb5427
DB		 3032 object_unref(OBJECT(s->sioc));
3033 s->sioc = NULL;
9894dc0c
DB		 3034 object_unref(OBJECT(s->ioc));
3035 s->ioc = NULL;
0ff0fad2 3036 g_free(chr->filename);
5b498459
MAL		 3037 chr->filename = NULL;
3038 s->connected = 0;
3039}
3040
3041static void tcp_chr_disconnect(CharDriverState *chr)
3042{
3043 TCPCharDriver *s = chr->opaque;
3044
3045 if (!s->connected) {
3046 return;
3047 }
3048
3049 tcp_chr_free_connection(chr);
3050
3051 if (s->listen_ioc) {
3052 s->listen_tag = qio_channel_add_watch(
3053 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
3054 }
0ff0fad2
DB		 3055 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
3056 s->is_listen, s->is_telnet);
7b0bfdf5 3057 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 3058 if (s->reconnect_time) {
3059 qemu_chr_socket_restart_timer(chr);
3060 }
7b0bfdf5
NN		 3061}
3062
9894dc0c 3063static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 3064{
3065 CharDriverState *chr = opaque;
3066 TCPCharDriver *s = chr->opaque;
9bd7854e 3067 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 3068 int len, size;
3069
2ea5a7af 3070 if (!s->connected || s->max_size <= 0) {
cdbf6e16 3071 return TRUE;
2ea5a7af 3072 }
6f97dba0
AL		 3073 len = sizeof(buf);
3074 if (len > s->max_size)
3075 len = s->max_size;
9977c894 3076 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 3077 if (size == 0 || size == -1) {
6f97dba0 3078 /* connection closed */
7b0bfdf5 3079 tcp_chr_disconnect(chr);
6f97dba0
AL		 3080 } else if (size > 0) {
3081 if (s->do_telnetopt)
3082 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
3083 if (size > 0)
fa5efccb 3084 qemu_chr_be_write(chr, buf, size);
6f97dba0 3085 }
2ea5a7af
AL		 3086
3087 return TRUE;
6f97dba0
AL		 3088}
3089
7b0bfdf5
NN		 3090static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
3091{
3092 TCPCharDriver *s = chr->opaque;
3093 int size;
3094
3095 if (!s->connected) {
3096 return 0;
3097 }
3098
3099 size = tcp_chr_recv(chr, (void *) buf, len);
3100 if (size == 0) {
3101 /* connection closed */
3102 tcp_chr_disconnect(chr);
3103 }
3104
3105 return size;
3106}
3107
6f97dba0
AL		 3108static void tcp_chr_connect(void *opaque)
3109{
3110 CharDriverState *chr = opaque;
3111 TCPCharDriver *s = chr->opaque;
16cc4ffe 3112
0ff0fad2 3113 g_free(chr->filename);
a8fb5427
DB		 3114 chr->filename = sockaddr_to_str(
3115 &s->sioc->localAddr, s->sioc->localAddrLen,
3116 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
3117 s->is_listen, s->is_telnet);
6f97dba0
AL		 3118
3119 s->connected = 1;
9894dc0c
DB		 3120 if (s->ioc) {
3121 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3122 tcp_chr_read_poll,
e92aa36a
ZC		 3123 tcp_chr_read,
3124 chr, NULL);
bbdd2ad0 3125 }
fee204fd 3126 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 3127}
3128
e92aa36a 3129static void tcp_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 3130 GMainContext *context,
3131 int tag)
ac1b84dd
GH		 3132{
3133 TCPCharDriver *s = chr->opaque;
3134
1e94f23d
DB		 3135 if (!s->connected) {
3136 return;
3137 }
3138
ac1b84dd 3139 remove_fd_in_watch(chr);
9894dc0c
DB		 3140 if (s->ioc) {
3141 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3142 tcp_chr_read_poll,
e92aa36a
ZC		 3143 tcp_chr_read, chr,
3144 context);
ac1b84dd
GH		 3145 }
3146}
3147
f2001a7e
DB		 3148typedef struct {
3149 CharDriverState *chr;
3150 char buf[12];
3151 size_t buflen;
3152} TCPCharDriverTelnetInit;
3153
3154static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
3155 GIOCondition cond G_GNUC_UNUSED,
3156 gpointer user_data)
6f97dba0 3157{
f2001a7e
DB		 3158 TCPCharDriverTelnetInit *init = user_data;
3159 ssize_t ret;
3160
3161 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3162 if (ret < 0) {
3163 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3164 ret = 0;
3165 } else {
3166 tcp_chr_disconnect(init->chr);
3167 return FALSE;
3168 }
3169 }
3170 init->buflen -= ret;
3171
3172 if (init->buflen == 0) {
3173 tcp_chr_connect(init->chr);
3174 return FALSE;
3175 }
3176
3177 memmove(init->buf, init->buf + ret, init->buflen);
3178
3179 return TRUE;
3180}
3181
3182static void tcp_chr_telnet_init(CharDriverState *chr)
3183{
3184 TCPCharDriver *s = chr->opaque;
3185 TCPCharDriverTelnetInit *init =
3186 g_new0(TCPCharDriverTelnetInit, 1);
3187 size_t n = 0;
3188
3189 init->chr = chr;
3190 init->buflen = 12;
3191
3192#define IACSET(x, a, b, c) \
3193 do { \
3194 x[n++] = a; \
3195 x[n++] = b; \
3196 x[n++] = c; \
3197 } while (0)
3198
3199 /* Prep the telnet negotion to put telnet in binary,
3200 * no echo, single char mode */
3201 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3202 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3203 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3204 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3205
3206#undef IACSET
3207
3208 qio_channel_add_watch(
3209 s->ioc, G_IO_OUT,
3210 tcp_chr_telnet_init_io,
3211 init, NULL);
6f97dba0
AL		 3212}
3213
a8fb5427
DB		 3214
3215static void tcp_chr_tls_handshake(Object *source,
3216 Error *err,
3217 gpointer user_data)
3218{
3219 CharDriverState *chr = user_data;
3220 TCPCharDriver *s = chr->opaque;
3221
3222 if (err) {
3223 tcp_chr_disconnect(chr);
3224 } else {
3225 if (s->do_telnetopt) {
3226 tcp_chr_telnet_init(chr);
3227 } else {
3228 tcp_chr_connect(chr);
3229 }
3230 }
3231}
3232
3233
3234static void tcp_chr_tls_init(CharDriverState *chr)
3235{
3236 TCPCharDriver *s = chr->opaque;
3237 QIOChannelTLS *tioc;
3238 Error *err = NULL;
3239
3240 if (s->is_listen) {
3241 tioc = qio_channel_tls_new_server(
3242 s->ioc, s->tls_creds,
3243 NULL, /* XXX Use an ACL */
3244 &err);
3245 } else {
3246 tioc = qio_channel_tls_new_client(
3247 s->ioc, s->tls_creds,
32bafa8f 3248 s->addr->u.inet.data->host,
a8fb5427
DB		 3249 &err);
3250 }
3251 if (tioc == NULL) {
3252 error_free(err);
3253 tcp_chr_disconnect(chr);
660a2d83 3254 return;
a8fb5427
DB		 3255 }
3256 object_unref(OBJECT(s->ioc));
3257 s->ioc = QIO_CHANNEL(tioc);
3258
3259 qio_channel_tls_handshake(tioc,
3260 tcp_chr_tls_handshake,
3261 chr,
3262 NULL);
3263}
3264
3265
9894dc0c 3266static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3267{
3268 TCPCharDriver *s = chr->opaque;
9894dc0c 3269 if (s->ioc != NULL) {
13661089 3270 return -1;
9894dc0c 3271 }
13661089 3272
9894dc0c
DB		 3273 s->ioc = QIO_CHANNEL(sioc);
3274 object_ref(OBJECT(sioc));
a8fb5427
DB		 3275 s->sioc = sioc;
3276 object_ref(OBJECT(sioc));
9894dc0c 3277
64c800f8
DB		 3278 qio_channel_set_blocking(s->ioc, false, NULL);
3279
9894dc0c
DB		 3280 if (s->do_nodelay) {
3281 qio_channel_set_delay(s->ioc, false);
3282 }
910b6368
PB		 3283 if (s->listen_tag) {
3284 g_source_remove(s->listen_tag);
3285 s->listen_tag = 0;
3286 }
f2001a7e 3287
a8fb5427
DB		 3288 if (s->tls_creds) {
3289 tcp_chr_tls_init(chr);
f2001a7e 3290 } else {
a8fb5427
DB		 3291 if (s->do_telnetopt) {
3292 tcp_chr_telnet_init(chr);
3293 } else {
3294 tcp_chr_connect(chr);
3295 }
f2001a7e 3296 }
13661089
DB		 3297
3298 return 0;
3299}
3300
9894dc0c
DB		 3301
3302static int tcp_chr_add_client(CharDriverState *chr, int fd)
3303{
3304 int ret;
3305 QIOChannelSocket *sioc;
3306
3307 sioc = qio_channel_socket_new_fd(fd, NULL);
3308 if (!sioc) {
3309 return -1;
3310 }
9894dc0c
DB		 3311 ret = tcp_chr_new_client(chr, sioc);
3312 object_unref(OBJECT(sioc));
3313 return ret;
3314}
3315
3316static gboolean tcp_chr_accept(QIOChannel *channel,
3317 GIOCondition cond,
3318 void *opaque)
6f97dba0
AL		 3319{
3320 CharDriverState *chr = opaque;
9894dc0c 3321 QIOChannelSocket *sioc;
6f97dba0 3322
9894dc0c
DB		 3323 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3324 NULL);
3325 if (!sioc) {
3326 return TRUE;
6f97dba0 3327 }
9894dc0c 3328
9894dc0c
DB		 3329 tcp_chr_new_client(chr, sioc);
3330
3331 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3332
3333 return TRUE;
6f97dba0
AL		 3334}
3335
d7a04fd7
MAL		 3336static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
3337{
3338 TCPCharDriver *s = chr->opaque;
3339 QIOChannelSocket *sioc;
3340
1dc8a669
MAL		 3341 /* It can't wait on s->connected, since it is set asynchronously
3342 * in TLS and telnet cases, only wait for an accepted socket */
3343 while (!s->ioc) {
d7a04fd7
MAL		 3344 if (s->is_listen) {
3345 fprintf(stderr, "QEMU waiting for connection on: %s\n",
3346 chr->filename);
3347 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3348 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3349 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3350 } else {
3351 sioc = qio_channel_socket_new();
3352 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3353 object_unref(OBJECT(sioc));
3354 return -1;
3355 }
3356 tcp_chr_new_client(chr, sioc);
3357 object_unref(OBJECT(sioc));
3358 }
3359 }
3360
3361 return 0;
3362}
3363
5345fdb4 3364static int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
6b6723c3
MAL		 3365{
3366 if (chr->chr_wait_connected) {
3367 return chr->chr_wait_connected(chr, errp);
3368 }
3369
3370 return 0;
3371}
3372
5345fdb4
MAL		 3373int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
3374{
fa394ed6
MAL		 3375 if (!be->chr) {
3376 error_setg(errp, "missing associated backend");
3377 return -1;
3378 }
3379
5345fdb4
MAL		 3380 return qemu_chr_wait_connected(be->chr, errp);
3381}
3382
6f97dba0
AL		 3383static void tcp_chr_close(CharDriverState *chr)
3384{
3385 TCPCharDriver *s = chr->opaque;
5b498459
MAL		 3386
3387 tcp_chr_free_connection(chr);
cfb429cb 3388
5dd1f02b
CM		 3389 if (s->reconnect_timer) {
3390 g_source_remove(s->reconnect_timer);
3391 s->reconnect_timer = 0;
3392 }
cfb429cb 3393 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3394 if (s->listen_tag) {
3395 g_source_remove(s->listen_tag);
3396 s->listen_tag = 0;
3397 }
3398 if (s->listen_ioc) {
3399 object_unref(OBJECT(s->listen_ioc));
819f56b7 3400 }
a8fb5427
DB		 3401 if (s->tls_creds) {
3402 object_unref(OBJECT(s->tls_creds));
3403 }
7267c094 3404 g_free(s);
a425d23f 3405 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3406}
3407
43ded1a0 3408
9894dc0c 3409static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3410{
9894dc0c 3411 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3412 CharDriverState *chr = opaque;
5008e5b7 3413 TCPCharDriver *s = chr->opaque;
5dd1f02b 3414
9894dc0c 3415 if (err) {
5008e5b7 3416 check_report_connect_error(chr, err);
9894dc0c 3417 object_unref(src);
5dd1f02b
CM		 3418 return;
3419 }
3420
5008e5b7 3421 s->connect_err_reported = false;
f50dfe45
DB		 3422 tcp_chr_new_client(chr, sioc);
3423 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3424}
3425
f6bd5d6e 3426
51767e7c 3427/*********************************************************/
3949e594 3428/* Ring buffer chardev */
51767e7c
LL		 3429
3430typedef struct {
3431 size_t size;
3432 size_t prod;
3433 size_t cons;
3434 uint8_t *cbuf;
3949e594 3435} RingBufCharDriver;
51767e7c 3436
3949e594 3437static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3438{
3949e594 3439 const RingBufCharDriver *d = chr->opaque;
51767e7c 3440
5c230105 3441 return d->prod - d->cons;
51767e7c
LL		 3442}
3443
9005b2a7 3444/* Called with chr_write_lock held. */
3949e594 3445static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3446{
3949e594 3447 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3448 int i;
3449
3450 if (!buf || (len < 0)) {
3451 return -1;
3452 }
3453
3454 for (i = 0; i < len; i++ ) {
5c230105
MA		 3455 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3456 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3457 d->cons = d->prod - d->size;
3458 }
3459 }
3460
5c936a83 3461 return len;
51767e7c
LL		 3462}
3463
3949e594 3464static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3465{
3949e594 3466 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3467 int i;
3468
9005b2a7 3469 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3470 for (i = 0; i < len && d->cons != d->prod; i++) {
3471 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3472 }
9005b2a7 3473 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3474
3475 return i;
3476}
3477
3949e594 3478static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3479{
3949e594 3480 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3481
3482 g_free(d->cbuf);
3483 g_free(d);
3484 chr->opaque = NULL;
3485}
3486
479f09a1
PB		 3487static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3488 ChardevBackend *backend,
3489 ChardevReturn *ret,
4f57378f 3490 Error **errp)
51767e7c 3491{
32bafa8f 3492 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3493 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3494 CharDriverState *chr;
3949e594 3495 RingBufCharDriver *d;
51767e7c 3496
d0d7708b
DB		 3497 chr = qemu_chr_alloc(common, errp);
3498 if (!chr) {
3499 return NULL;
3500 }
51767e7c
LL		 3501 d = g_malloc(sizeof(*d));
3502
1da48c65 3503 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3504
3505 /* The size must be power of 2 */
3506 if (d->size & (d->size - 1)) {
4f57378f 3507 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3508 goto fail;
3509 }
3510
3511 d->prod = 0;
3512 d->cons = 0;
3513 d->cbuf = g_malloc0(d->size);
3514
3515 chr->opaque = d;
3949e594
MA		 3516 chr->chr_write = ringbuf_chr_write;
3517 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3518
3519 return chr;
3520
3521fail:
3522 g_free(d);
d0d7708b 3523 qemu_chr_free_common(chr);
51767e7c
LL		 3524 return NULL;
3525}
3526
8e597779 3527bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3528{
3949e594 3529 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3530}
3531
3949e594 3532void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3533 bool has_format, enum DataFormat format,
1f590cf9
LL		 3534 Error **errp)
3535{
3536 CharDriverState *chr;
c4f331b6 3537 const uint8_t *write_data;
1f590cf9 3538 int ret;
3d1bba20 3539 gsize write_count;
1f590cf9
LL		 3540
3541 chr = qemu_chr_find(device);
3542 if (!chr) {
1a69278e 3543 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3544 return;
3545 }
3546
3949e594
MA		 3547 if (!chr_is_ringbuf(chr)) {
3548 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3549 return;
3550 }
3551
1f590cf9 3552 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3553 write_data = qbase64_decode(data, -1,
3554 &write_count,
3555 errp);
3556 if (!write_data) {
3557 return;
3558 }
1f590cf9
LL		 3559 } else {
3560 write_data = (uint8_t *)data;
82e59a67 3561 write_count = strlen(data);
1f590cf9
LL		 3562 }
3563
3949e594 3564 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3565
13289fb5
MA		 3566 if (write_data != (uint8_t *)data) {
3567 g_free((void *)write_data);
3568 }
3569
1f590cf9
LL		 3570 if (ret < 0) {
3571 error_setg(errp, "Failed to write to device %s", device);
3572 return;
3573 }
3574}
3575
3949e594 3576char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3577 bool has_format, enum DataFormat format,
3578 Error **errp)
49b6d722
LL		 3579{
3580 CharDriverState *chr;
c4f331b6 3581 uint8_t *read_data;
49b6d722 3582 size_t count;
3ab651fc 3583 char *data;
49b6d722
LL		 3584
3585 chr = qemu_chr_find(device);
3586 if (!chr) {
1a69278e 3587 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3588 return NULL;
3589 }
3590
3949e594
MA		 3591 if (!chr_is_ringbuf(chr)) {
3592 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3593 return NULL;
3594 }
3595
3596 if (size <= 0) {
3597 error_setg(errp, "size must be greater than zero");
3598 return NULL;
3599 }
3600
3949e594 3601 count = ringbuf_count(chr);
49b6d722 3602 size = size > count ? count : size;
44f3bcd2 3603 read_data = g_malloc(size + 1);
49b6d722 3604
3949e594 3605 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3606
3607 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3608 data = g_base64_encode(read_data, size);
13289fb5 3609 g_free(read_data);
49b6d722 3610 } else {
3949e594
MA		 3611 /*
3612 * FIXME should read only complete, valid UTF-8 characters up
3613 * to @size bytes. Invalid sequences should be replaced by a
3614 * suitable replacement character. Except when (and only
3615 * when) ring buffer lost characters since last read, initial
3616 * continuation characters should be dropped.
3617 */
44f3bcd2 3618 read_data[size] = 0;
3ab651fc 3619 data = (char *)read_data;
49b6d722
LL		 3620 }
3621
3ab651fc 3622 return data;
49b6d722
LL		 3623}
3624
33521634 3625QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3626{
6ea314d9 3627 char host[65], port[33], width[8], height[8];
aeb2c47a 3628 int pos;
7d31544f 3629 const char *p;
191bc01b 3630 QemuOpts *opts;
8be7e7e4 3631 Error *local_err = NULL;
191bc01b 3632
8be7e7e4 3633 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3634 if (local_err) {
33394884 3635 error_report_err(local_err);
191bc01b 3636 return NULL;
8be7e7e4 3637 }
191bc01b 3638
7591c5c1
GH		 3639 if (strstart(filename, "mon:", &p)) {
3640 filename = p;
f43e47db 3641 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3642 if (strcmp(filename, "stdio") == 0) {
3643 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3644 * but pass it to the guest. Handle this only for compat syntax,
3645 * for -chardev syntax we have special option for this.
3646 * This is what -nographic did, redirecting+muxing serial+monitor
3647 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3648 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3649 }
7591c5c1
GH		 3650 }
3651
f0457e8d
GH		 3652 if (strcmp(filename, "null") == 0 ||
3653 strcmp(filename, "pty") == 0 ||
3654 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3655 strcmp(filename, "braille") == 0 ||
5692399f 3656 strcmp(filename, "testdev") == 0 ||
f0457e8d 3657 strcmp(filename, "stdio") == 0) {
f43e47db 3658 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3659 return opts;
3660 }
6ea314d9 3661 if (strstart(filename, "vc", &p)) {
f43e47db 3662 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3663 if (*p == ':') {
49aa4058 3664 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3665 /* pixels */
f43e47db
MA		 3666 qemu_opt_set(opts, "width", width, &error_abort);
3667 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3668 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3669 /* chars */
f43e47db
MA		 3670 qemu_opt_set(opts, "cols", width, &error_abort);
3671 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3672 } else {
3673 goto fail;
3674 }
3675 }
3676 return opts;
3677 }
d6c983cd 3678 if (strcmp(filename, "con:") == 0) {
f43e47db 3679 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3680 return opts;
3681 }
48b76496 3682 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3683 qemu_opt_set(opts, "backend", "serial", &error_abort);
3684 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3685 return opts;
3686 }
7d31544f 3687 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3688 qemu_opt_set(opts, "backend", "file", &error_abort);
3689 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3690 return opts;
3691 }
3692 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3693 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3694 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3695 return opts;
3696 }
aeb2c47a
GH		 3697 if (strstart(filename, "tcp:", &p) ||
3698 strstart(filename, "telnet:", &p)) {
3699 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3700 host[0] = 0;
3701 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3702 goto fail;
3703 }
f43e47db
MA		 3704 qemu_opt_set(opts, "backend", "socket", &error_abort);
3705 qemu_opt_set(opts, "host", host, &error_abort);
3706 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3707 if (p[pos] == ',') {
dc523cd3
MA		 3708 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3709 if (local_err) {
3710 error_report_err(local_err);
aeb2c47a 3711 goto fail;
dc523cd3 3712 }
aeb2c47a
GH		 3713 }
3714 if (strstart(filename, "telnet:", &p))
f43e47db 3715 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3716 return opts;
3717 }
7e1b35b4 3718 if (strstart(filename, "udp:", &p)) {
f43e47db 3719 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3720 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3721 host[0] = 0;
39324ca4 3722 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3723 goto fail;
3724 }
3725 }
f43e47db
MA		 3726 qemu_opt_set(opts, "host", host, &error_abort);
3727 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3728 if (p[pos] == '@') {
3729 p += pos + 1;
3730 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3731 host[0] = 0;
3732 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3733 goto fail;
3734 }
3735 }
f43e47db
MA		 3736 qemu_opt_set(opts, "localaddr", host, &error_abort);
3737 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3738 }
3739 return opts;
3740 }
aeb2c47a 3741 if (strstart(filename, "unix:", &p)) {
f43e47db 3742 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3743 qemu_opts_do_parse(opts, p, "path", &local_err);
3744 if (local_err) {
3745 error_report_err(local_err);
aeb2c47a 3746 goto fail;
dc523cd3 3747 }
aeb2c47a
GH		 3748 return opts;
3749 }
48b76496
GH		 3750 if (strstart(filename, "/dev/parport", NULL) ||
3751 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3752 qemu_opt_set(opts, "backend", "parport", &error_abort);
3753 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3754 return opts;
3755 }
3756 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3757 qemu_opt_set(opts, "backend", "tty", &error_abort);
3758 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3759 return opts;
3760 }
191bc01b 3761
aeb2c47a 3762fail:
191bc01b
GH		 3763 qemu_opts_del(opts);
3764 return NULL;
3765}
3766
21a933ea 3767void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3768{
3769 const char *logfile = qemu_opt_get(opts, "logfile");
3770
3771 backend->has_logfile = logfile != NULL;
3772 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3773
3774 backend->has_logappend = true;
3775 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3776}
3777
3778
846e2e49
GH		 3779static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3780 Error **errp)
3781{
3782 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3783 ChardevFile *file;
846e2e49
GH		 3784
3785 if (path == NULL) {
3786 error_setg(errp, "chardev: file: no filename given");
3787 return;
3788 }
32bafa8f 3789 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3790 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3791 file->out = g_strdup(path);
31e38a22 3792
f194a1ae
EB		 3793 file->has_append = true;
3794 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3795}
3796
7c358031
GH		 3797static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3798 Error **errp)
3799{
f194a1ae
EB		 3800 ChardevStdio *stdio;
3801
32bafa8f 3802 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3803 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3804 stdio->has_signal = true;
3805 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3806}
3807
6511d396 3808#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3809static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3810 Error **errp)
3811{
3812 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3813 ChardevHostdev *serial;
0f1cb51d
GH		 3814
3815 if (device == NULL) {
3816 error_setg(errp, "chardev: serial/tty: no device path given");
3817 return;
3818 }
32bafa8f 3819 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3820 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3821 serial->device = g_strdup(device);
0f1cb51d 3822}
6511d396 3823#endif
0f1cb51d 3824
38bfb1a6 3825#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3826static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3827 Error **errp)
3828{
3829 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3830 ChardevHostdev *parallel;
dc375097
GH		 3831
3832 if (device == NULL) {
3833 error_setg(errp, "chardev: parallel: no device path given");
3834 return;
3835 }
32bafa8f 3836 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3837 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3838 parallel->device = g_strdup(device);
dc375097 3839}
38bfb1a6 3840#endif
dc375097 3841
548cbb36
GH		 3842static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3843 Error **errp)
3844{
3845 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3846 ChardevHostdev *dev;
548cbb36
GH		 3847
3848 if (device == NULL) {
3849 error_setg(errp, "chardev: pipe: no device path given");
3850 return;
3851 }
32bafa8f 3852 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3853 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3854 dev->device = g_strdup(device);
548cbb36
GH		 3855}
3856
4f57378f
MA		 3857static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3858 Error **errp)
1da48c65
GH		 3859{
3860 int val;
f194a1ae 3861 ChardevRingbuf *ringbuf;
1da48c65 3862
32bafa8f 3863 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3864 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3865
0f953051 3866 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3867 if (val != 0) {
f194a1ae
EB		 3868 ringbuf->has_size = true;
3869 ringbuf->size = val;
1da48c65
GH		 3870 }
3871}
3872
bb6fb7c0
GH		 3873static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3874 Error **errp)
3875{
3876 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3877 ChardevMux *mux;
bb6fb7c0
GH		 3878
3879 if (chardev == NULL) {
3880 error_setg(errp, "chardev: mux: no chardev given");
3881 return;
3882 }
32bafa8f 3883 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3884 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3885 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3886}
3887
dafd325d
PM		 3888static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3889 Error **errp)
3890{
3891 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3892 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3893 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3894 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3895 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3896 const char *path = qemu_opt_get(opts, "path");
3897 const char *host = qemu_opt_get(opts, "host");
3898 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3899 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3900 SocketAddress *addr;
f194a1ae 3901 ChardevSocket *sock;
dafd325d
PM		 3902
3903 if (!path) {
3904 if (!host) {
3905 error_setg(errp, "chardev: socket: no host given");
3906 return;
3907 }
3908 if (!port) {
3909 error_setg(errp, "chardev: socket: no port given");
3910 return;
3911 }
a8fb5427
DB		 3912 } else {
3913 if (tls_creds) {
3914 error_setg(errp, "TLS can only be used over TCP socket");
3915 return;
3916 }
dafd325d
PM		 3917 }
3918
32bafa8f 3919 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3920 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3921
f194a1ae
EB		 3922 sock->has_nodelay = true;
3923 sock->nodelay = do_nodelay;
3924 sock->has_server = true;
3925 sock->server = is_listen;
3926 sock->has_telnet = true;
3927 sock->telnet = is_telnet;
3928 sock->has_wait = true;
3929 sock->wait = is_waitconnect;
3930 sock->has_reconnect = true;
3931 sock->reconnect = reconnect;
3932 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3933
3934 addr = g_new0(SocketAddress, 1);
3935 if (path) {
0399293e 3936 UnixSocketAddress *q_unix;
130257dc 3937 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3938 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3939 q_unix->path = g_strdup(path);
dafd325d 3940 } else {
130257dc 3941 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3942 addr->u.inet.data = g_new(InetSocketAddress, 1);
3943 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3944 .host = g_strdup(host),
3945 .port = g_strdup(port),
3946 .has_to = qemu_opt_get(opts, "to"),
3947 .to = qemu_opt_get_number(opts, "to", 0),
3948 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3949 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3950 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3951 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3952 };
dafd325d 3953 }
f194a1ae 3954 sock->addr = addr;
dafd325d
PM		 3955}
3956
90a14bfe
PM		 3957static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3958 Error **errp)
3959{
3960 const char *host = qemu_opt_get(opts, "host");
3961 const char *port = qemu_opt_get(opts, "port");
3962 const char *localaddr = qemu_opt_get(opts, "localaddr");
3963 const char *localport = qemu_opt_get(opts, "localport");
3964 bool has_local = false;
3965 SocketAddress *addr;
f194a1ae 3966 ChardevUdp *udp;
90a14bfe
PM		 3967
3968 if (host == NULL || strlen(host) == 0) {
3969 host = "localhost";
3970 }
3971 if (port == NULL || strlen(port) == 0) {
3972 error_setg(errp, "chardev: udp: remote port not specified");
3973 return;
3974 }
3975 if (localport == NULL || strlen(localport) == 0) {
3976 localport = "0";
3977 } else {
3978 has_local = true;
3979 }
3980 if (localaddr == NULL || strlen(localaddr) == 0) {
3981 localaddr = "";
3982 } else {
3983 has_local = true;
3984 }
3985
32bafa8f 3986 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 3987 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3988
3989 addr = g_new0(SocketAddress, 1);
130257dc 3990 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3991 addr->u.inet.data = g_new(InetSocketAddress, 1);
3992 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3993 .host = g_strdup(host),
3994 .port = g_strdup(port),
3995 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3996 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3997 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3998 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3999 };
f194a1ae 4000 udp->remote = addr;
90a14bfe
PM		 4001
4002 if (has_local) {
f194a1ae 4003 udp->has_local = true;
90a14bfe 4004 addr = g_new0(SocketAddress, 1);
130257dc 4005 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4006 addr->u.inet.data = g_new(InetSocketAddress, 1);
4007 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4008 .host = g_strdup(localaddr),
4009 .port = g_strdup(localport),
4010 };
f194a1ae 4011 udp->local = addr;
90a14bfe
PM		 4012 }
4013}
4014
d654f34e 4015typedef struct CharDriver {
191bc01b 4016 const char *name;
99aec012 4017 ChardevBackendKind kind;
2c5f4882 4018 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 4019 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
4020 ChardevReturn *ret, Error **errp);
d654f34e
AL		 4021} CharDriver;
4022
4023static GSList *backends;
4024
e4d50d47 4025void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 4026 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
4027 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
4028 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 4029{
4030 CharDriver *s;
4031
4032 s = g_malloc0(sizeof(*s));
4033 s->name = g_strdup(name);
4034 s->kind = kind;
4035 s->parse = parse;
4ca17281 4036 s->create = create;
2c5f4882
GH		 4037
4038 backends = g_slist_append(backends, s);
4039}
4040
f69554b9 4041CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
b4948be9 4042 Error **errp)
191bc01b 4043{
0aff637e 4044 Error *local_err = NULL;
d654f34e 4045 CharDriver *cd;
191bc01b 4046 CharDriverState *chr;
d654f34e 4047 GSList *i;
a61ae7f8
PM		 4048 ChardevReturn *ret = NULL;
4049 ChardevBackend *backend;
4050 const char *id = qemu_opts_id(opts);
4051 char *bid = NULL;
191bc01b 4052
1bbd185f 4053 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 4054 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 4055 qemu_opts_id(opts));
2274ae9d 4056 goto err;
1bbd185f 4057 }
517b3d40
LM		 4058
4059 if (is_help_option(qemu_opt_get(opts, "backend"))) {
4060 fprintf(stderr, "Available chardev backend types:\n");
4061 for (i = backends; i; i = i->next) {
4062 cd = i->data;
4063 fprintf(stderr, "%s\n", cd->name);
4064 }
4065 exit(!is_help_option(qemu_opt_get(opts, "backend")));
4066 }
4067
4068 if (id == NULL) {
4069 error_setg(errp, "chardev: no id specified");
4070 goto err;
4071 }
4072
d654f34e
AL		 4073 for (i = backends; i; i = i->next) {
4074 cd = i->data;
4075
4076 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 4077 break;
d654f34e 4078 }
191bc01b 4079 }
d654f34e 4080 if (i == NULL) {
312fd5f2 4081 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 4082 qemu_opt_get(opts, "backend"));
e668287d 4083 goto err;
191bc01b
GH		 4084 }
4085
a61ae7f8 4086 backend = g_new0(ChardevBackend, 1);
edb2fb3c 4087
a61ae7f8
PM		 4088 if (qemu_opt_get_bool(opts, "mux", 0)) {
4089 bid = g_strdup_printf("%s-base", id);
4090 }
2c5f4882 4091
a61ae7f8 4092 chr = NULL;
130257dc 4093 backend->type = cd->kind;
a61ae7f8
PM		 4094 if (cd->parse) {
4095 cd->parse(opts, backend, &local_err);
4096 if (local_err) {
4097 error_propagate(errp, local_err);
2c5f4882
GH		 4098 goto qapi_out;
4099 }
d0d7708b
DB		 4100 } else {
4101 ChardevCommon *cc = g_new0(ChardevCommon, 1);
4102 qemu_chr_parse_common(opts, cc);
32bafa8f 4103 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 4104 }
d0d7708b 4105
a61ae7f8
PM		 4106 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
4107 if (!ret) {
4108 goto qapi_out;
191bc01b
GH		 4109 }
4110
a61ae7f8
PM		 4111 if (bid) {
4112 qapi_free_ChardevBackend(backend);
4113 qapi_free_ChardevReturn(ret);
4114 backend = g_new0(ChardevBackend, 1);
32bafa8f 4115 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 4116 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 4117 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 4118 ret = qmp_chardev_add(id, backend, errp);
4119 if (!ret) {
4120 chr = qemu_chr_find(bid);
4121 qemu_chr_delete(chr);
4122 chr = NULL;
4123 goto qapi_out;
4124 }
bd5c51ee 4125 }
7591c5c1 4126
a61ae7f8 4127 chr = qemu_chr_find(id);
a61ae7f8
PM		 4128
4129qapi_out:
4130 qapi_free_ChardevBackend(backend);
4131 qapi_free_ChardevReturn(ret);
4132 g_free(bid);
191bc01b 4133 return chr;
2274ae9d
GH		 4134
4135err:
2274ae9d 4136 return NULL;
191bc01b
GH		 4137}
4138
b4948be9 4139CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename)
6f97dba0
AL		 4140{
4141 const char *p;
4142 CharDriverState *chr;
191bc01b 4143 QemuOpts *opts;
bd2d80b2 4144 Error *err = NULL;
191bc01b 4145
c845f401
GH		 4146 if (strstart(filename, "chardev:", &p)) {
4147 return qemu_chr_find(p);
4148 }
4149
191bc01b 4150 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 4151 if (!opts)
4152 return NULL;
6f97dba0 4153
b4948be9 4154 chr = qemu_chr_new_from_opts(opts, &err);
84d18f06 4155 if (err) {
565f65d2 4156 error_report_err(err);
bd2d80b2 4157 }
7e1b35b4
GH		 4158 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
4159 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0 4160 }
0a73336d 4161 qemu_opts_del(opts);
6f97dba0
AL		 4162 return chr;
4163}
4164
b4948be9 4165CharDriverState *qemu_chr_new(const char *label, const char *filename)
33577b47
PD		 4166{
4167 CharDriverState *chr;
b4948be9 4168 chr = qemu_chr_new_noreplay(label, filename);
33577b47
PD		 4169 if (chr) {
4170 chr->replay = replay_mode != REPLAY_MODE_NONE;
4171 if (chr->replay && chr->chr_ioctl) {
4172 fprintf(stderr,
4173 "Replay: ioctl is not supported for serial devices yet\n");
4174 }
4175 replay_register_char_driver(chr);
4176 }
4177 return chr;
4178}
4179
5345fdb4 4180void qemu_chr_fe_set_echo(CharBackend *be, bool echo)
c48855e1 4181{
5345fdb4
MAL		 4182 CharDriverState *chr = be->chr;
4183
fa394ed6 4184 if (chr && chr->chr_set_echo) {
c48855e1
PB		 4185 chr->chr_set_echo(chr, echo);
4186 }
4187}
4188
5345fdb4 4189void qemu_chr_fe_set_open(CharBackend *be, int fe_open)
7c32c4fe 4190{
5345fdb4
MAL		 4191 CharDriverState *chr = be->chr;
4192
fa394ed6
MAL		 4193 if (!chr) {
4194 return;
4195 }
4196
8e25daa8 4197 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 4198 return;
4199 }
8e25daa8 4200 chr->fe_open = fe_open;
574b711a
HG		 4201 if (chr->chr_set_fe_open) {
4202 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4203 }
4204}
4205
5345fdb4 4206void qemu_chr_fe_event(CharBackend *be, int event)
d61b0c9a 4207{
5345fdb4
MAL		 4208 CharDriverState *chr = be->chr;
4209
fa394ed6 4210 if (chr && chr->chr_fe_event) {
d61b0c9a
MAL		 4211 chr->chr_fe_event(chr, event);
4212 }
4213}
4214
5345fdb4 4215guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
6f1de6b7 4216 GIOFunc func, void *user_data)
23673ca7 4217{
5345fdb4 4218 CharDriverState *s = be->chr;
23673ca7
AL		 4219 GSource *src;
4220 guint tag;
4221
fa394ed6 4222 if (!s || s->chr_add_watch == NULL) {
6f1de6b7 4223 return 0;
23673ca7
AL		 4224 }
4225
4226 src = s->chr_add_watch(s, cond);
62c339c5 4227 if (!src) {
6f1de6b7 4228 return 0;
62c339c5
PB		 4229 }
4230
23673ca7
AL		 4231 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4232 tag = g_source_attach(src, NULL);
4233 g_source_unref(src);
4234
4235 return tag;
4236}
4237
5345fdb4 4238void qemu_chr_fe_disconnect(CharBackend *be)
7d9d17f7 4239{
5345fdb4
MAL		 4240 CharDriverState *chr = be->chr;
4241
fa394ed6 4242 if (chr && chr->chr_disconnect) {
7d9d17f7
TM		 4243 chr->chr_disconnect(chr);
4244 }
4245}
4246
d0d7708b 4247static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4248{
7267c094
AL		 4249 g_free(chr->filename);
4250 g_free(chr->label);
d0d7708b
DB		 4251 if (chr->logfd != -1) {
4252 close(chr->logfd);
4253 }
fefd749c 4254 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4255 g_free(chr);
6f97dba0
AL		 4256}
4257
d0d7708b
DB		 4258void qemu_chr_free(CharDriverState *chr)
4259{
4260 if (chr->chr_close) {
4261 chr->chr_close(chr);
4262 }
4263 qemu_chr_free_common(chr);
4264}
4265
1ad78ea5
MAL		 4266void qemu_chr_delete(CharDriverState *chr)
4267{
4268 QTAILQ_REMOVE(&chardevs, chr, next);
4269 qemu_chr_free(chr);
4270}
4271
c5a415a0 4272ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4273{
c5a415a0 4274 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4275 CharDriverState *chr;
4276
72cf2d4f 4277 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4278 ChardevInfoList *info = g_malloc0(sizeof(*info));
4279 info->value = g_malloc0(sizeof(*info->value));
4280 info->value->label = g_strdup(chr->label);
4281 info->value->filename = g_strdup(chr->filename);
32a97ea1 4282 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4283
4284 info->next = chr_list;
4285 chr_list = info;
6f97dba0 4286 }
588b3832 4287
c5a415a0 4288 return chr_list;
6f97dba0 4289}
c845f401 4290
77d1c3c6
MK		 4291ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4292{
4293 ChardevBackendInfoList *backend_list = NULL;
4294 CharDriver *c = NULL;
4295 GSList *i = NULL;
4296
4297 for (i = backends; i; i = i->next) {
4298 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4299 c = i->data;
4300 info->value = g_malloc0(sizeof(*info->value));
4301 info->value->name = g_strdup(c->name);
4302
4303 info->next = backend_list;
4304 backend_list = info;
4305 }
4306
4307 return backend_list;
4308}
4309
c845f401
GH		 4310CharDriverState *qemu_chr_find(const char *name)
4311{
4312 CharDriverState *chr;
4313
72cf2d4f 4314 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4315 if (strcmp(chr->label, name) != 0)
4316 continue;
4317 return chr;
4318 }
4319 return NULL;
4320}
0beb4942 4321
4d454574
PB		 4322QemuOptsList qemu_chardev_opts = {
4323 .name = "chardev",
4324 .implied_opt_name = "backend",
4325 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4326 .desc = {
4327 {
4328 .name = "backend",
4329 .type = QEMU_OPT_STRING,
4330 },{
4331 .name = "path",
4332 .type = QEMU_OPT_STRING,
4333 },{
4334 .name = "host",
4335 .type = QEMU_OPT_STRING,
4336 },{
4337 .name = "port",
4338 .type = QEMU_OPT_STRING,
4339 },{
4340 .name = "localaddr",
4341 .type = QEMU_OPT_STRING,
4342 },{
4343 .name = "localport",
4344 .type = QEMU_OPT_STRING,
4345 },{
4346 .name = "to",
4347 .type = QEMU_OPT_NUMBER,
4348 },{
4349 .name = "ipv4",
4350 .type = QEMU_OPT_BOOL,
4351 },{
4352 .name = "ipv6",
4353 .type = QEMU_OPT_BOOL,
4354 },{
4355 .name = "wait",
4356 .type = QEMU_OPT_BOOL,
4357 },{
4358 .name = "server",
4359 .type = QEMU_OPT_BOOL,
4360 },{
4361 .name = "delay",
4362 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4363 },{
4364 .name = "reconnect",
4365 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4366 },{
4367 .name = "telnet",
4368 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4369 },{
4370 .name = "tls-creds",
4371 .type = QEMU_OPT_STRING,
4d454574
PB		 4372 },{
4373 .name = "width",
4374 .type = QEMU_OPT_NUMBER,
4375 },{
4376 .name = "height",
4377 .type = QEMU_OPT_NUMBER,
4378 },{
4379 .name = "cols",
4380 .type = QEMU_OPT_NUMBER,
4381 },{
4382 .name = "rows",
4383 .type = QEMU_OPT_NUMBER,
4384 },{
4385 .name = "mux",
4386 .type = QEMU_OPT_BOOL,
4387 },{
4388 .name = "signal",
4389 .type = QEMU_OPT_BOOL,
4390 },{
4391 .name = "name",
4392 .type = QEMU_OPT_STRING,
4393 },{
4394 .name = "debug",
4395 .type = QEMU_OPT_NUMBER,
51767e7c 4396 },{
3949e594 4397 .name = "size",
de1cc36e 4398 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4399 },{
4400 .name = "chardev",
4401 .type = QEMU_OPT_STRING,
31e38a22
OK		 4402 },{
4403 .name = "append",
4404 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4405 },{
4406 .name = "logfile",
4407 .type = QEMU_OPT_STRING,
4408 },{
4409 .name = "logappend",
4410 .type = QEMU_OPT_BOOL,
4d454574
PB		 4411 },
4412 { /* end of list */ }
4413 },
4414};
f1a1a356 4415
ffbdbe59
GH		 4416#ifdef _WIN32
4417
fd5b036c
PB		 4418static CharDriverState *qmp_chardev_open_file(const char *id,
4419 ChardevBackend *backend,
4420 ChardevReturn *ret,
4421 Error **errp)
ffbdbe59 4422{
32bafa8f 4423 ChardevFile *file = backend->u.file.data;
f194a1ae 4424 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59 4425 HANDLE out;
c025f689
SW		 4426 DWORD accessmode;
4427 DWORD flags;
ffbdbe59 4428
e859eda5 4429 if (file->has_in) {
ffbdbe59
GH		 4430 error_setg(errp, "input file not supported");
4431 return NULL;
4432 }
4433
c025f689
SW		 4434 if (file->has_append && file->append) {
4435 /* Append to file if it already exists. */
4436 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4437 flags = OPEN_ALWAYS;
4438 } else {
4439 /* Truncate file if it already exists. */
4440 accessmode = GENERIC_WRITE;
4441 flags = CREATE_ALWAYS;
4442 }
4443
4444 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4445 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4446 if (out == INVALID_HANDLE_VALUE) {
4447 error_setg(errp, "open %s failed", file->out);
4448 return NULL;
4449 }
d0d7708b 4450 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4451}
4452
6511d396
PB		 4453static CharDriverState *qmp_chardev_open_serial(const char *id,
4454 ChardevBackend *backend,
4455 ChardevReturn *ret,
d36b2b90 4456 Error **errp)
d59044ef 4457{
32bafa8f 4458 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4459 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4460 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4461}
4462
ffbdbe59
GH		 4463#else /* WIN32 */
4464
4465static int qmp_chardev_open_file_source(char *src, int flags,
4466 Error **errp)
4467{
4468 int fd = -1;
4469
4470 TFR(fd = qemu_open(src, flags, 0666));
4471 if (fd == -1) {
20c39760 4472 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4473 }
4474 return fd;
4475}
4476
fd5b036c
PB		 4477static CharDriverState *qmp_chardev_open_file(const char *id,
4478 ChardevBackend *backend,
4479 ChardevReturn *ret,
4480 Error **errp)
ffbdbe59 4481{
32bafa8f 4482 ChardevFile *file = backend->u.file.data;
f194a1ae 4483 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4484 int flags, in = -1, out;
ffbdbe59 4485
31e38a22
OK		 4486 flags = O_WRONLY | O_CREAT | O_BINARY;
4487 if (file->has_append && file->append) {
4488 flags |= O_APPEND;
4489 } else {
4490 flags |= O_TRUNC;
4491 }
4492
ffbdbe59 4493 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4494 if (out < 0) {
ffbdbe59
GH		 4495 return NULL;
4496 }
4497
e859eda5 4498 if (file->has_in) {
ffbdbe59
GH		 4499 flags = O_RDONLY;
4500 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4501 if (in < 0) {
ffbdbe59
GH		 4502 qemu_close(out);
4503 return NULL;
4504 }
4505 }
4506
d0d7708b 4507 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4508}
4509
d809ab95 4510#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4511static CharDriverState *qmp_chardev_open_serial(const char *id,
4512 ChardevBackend *backend,
4513 ChardevReturn *ret,
d36b2b90 4514 Error **errp)
d59044ef 4515{
32bafa8f 4516 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4517 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4518 int fd;
4519
4520 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4521 if (fd < 0) {
d36b2b90 4522 return NULL;
39099991 4523 }
f9e8cacc 4524 qemu_set_nonblock(fd);
d0d7708b 4525 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4526}
6511d396 4527#endif
d36b2b90 4528
d809ab95 4529#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4530static CharDriverState *qmp_chardev_open_parallel(const char *id,
4531 ChardevBackend *backend,
4532 ChardevReturn *ret,
d36b2b90
MA		 4533 Error **errp)
4534{
32bafa8f 4535 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4536 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4537 int fd;
4538
4539 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4540 if (fd < 0) {
d59044ef
GH		 4541 return NULL;
4542 }
d0d7708b 4543 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4544}
d809ab95 4545#endif
d59044ef 4546
ffbdbe59
GH		 4547#endif /* WIN32 */
4548
5dd1f02b
CM		 4549static gboolean socket_reconnect_timeout(gpointer opaque)
4550{
4551 CharDriverState *chr = opaque;
4552 TCPCharDriver *s = chr->opaque;
317856ca 4553 QIOChannelSocket *sioc;
5dd1f02b
CM		 4554
4555 s->reconnect_timer = 0;
4556
4557 if (chr->be_open) {
4558 return false;
4559 }
4560
317856ca
DB		 4561 sioc = qio_channel_socket_new();
4562 qio_channel_socket_connect_async(sioc, s->addr,
4563 qemu_chr_socket_connected,
4564 chr, NULL);
5dd1f02b
CM		 4565
4566 return false;
4567}
4568
dbba8d1b
PB		 4569static CharDriverState *qmp_chardev_open_socket(const char *id,
4570 ChardevBackend *backend,
4571 ChardevReturn *ret,
f6bd5d6e
GH		 4572 Error **errp)
4573{
43ded1a0
CM		 4574 CharDriverState *chr;
4575 TCPCharDriver *s;
32bafa8f 4576 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4577 SocketAddress *addr = sock->addr;
4578 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4579 bool is_listen = sock->has_server ? sock->server : true;
4580 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4581 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4582 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4583 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4584 QIOChannelSocket *sioc = NULL;
43ded1a0 4585
d0d7708b
DB		 4586 chr = qemu_chr_alloc(common, errp);
4587 if (!chr) {
4588 return NULL;
4589 }
2d528d45 4590 s = g_new0(TCPCharDriver, 1);
43ded1a0 4591
130257dc 4592 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4593 s->is_listen = is_listen;
4594 s->is_telnet = is_telnet;
43ded1a0 4595 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4596 if (sock->tls_creds) {
4597 Object *creds;
4598 creds = object_resolve_path_component(
4599 object_get_objects_root(), sock->tls_creds);
4600 if (!creds) {
4601 error_setg(errp, "No TLS credentials with id '%s'",
4602 sock->tls_creds);
4603 goto error;
4604 }
4605 s->tls_creds = (QCryptoTLSCreds *)
4606 object_dynamic_cast(creds,
4607 TYPE_QCRYPTO_TLS_CREDS);
4608 if (!s->tls_creds) {
4609 error_setg(errp, "Object with id '%s' is not TLS credentials",
4610 sock->tls_creds);
4611 goto error;
4612 }
4613 object_ref(OBJECT(s->tls_creds));
4614 if (is_listen) {
4615 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4616 error_setg(errp, "%s",
4617 "Expected TLS credentials for server endpoint");
4618 goto error;
4619 }
4620 } else {
4621 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4622 error_setg(errp, "%s",
4623 "Expected TLS credentials for client endpoint");
4624 goto error;
4625 }
4626 }
4627 }
4628
37f9e0a2 4629 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0 4630
0a73336d
DB		 4631 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
4632 if (s->is_unix) {
4633 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
4634 }
4635
43ded1a0 4636 chr->opaque = s;
d7a04fd7 4637 chr->chr_wait_connected = tcp_chr_wait_connected;
43ded1a0
CM		 4638 chr->chr_write = tcp_chr_write;
4639 chr->chr_sync_read = tcp_chr_sync_read;
4640 chr->chr_close = tcp_chr_close;
7d9d17f7 4641 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4642 chr->get_msgfds = tcp_get_msgfds;
4643 chr->set_msgfds = tcp_set_msgfds;
4644 chr->chr_add_client = tcp_chr_add_client;
4645 chr->chr_add_watch = tcp_chr_add_watch;
4646 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4647 /* be isn't opened until we get a connection */
4648 chr->explicit_be_open = true;
4649
0ff0fad2
DB		 4650 chr->filename = SocketAddress_to_str("disconnected:",
4651 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4652
4653 if (is_listen) {
43ded1a0
CM		 4654 if (is_telnet) {
4655 s->do_telnetopt = 1;
4656 }
5dd1f02b
CM		 4657 } else if (reconnect > 0) {
4658 s->reconnect_time = reconnect;
f6bd5d6e 4659 }
43ded1a0 4660
5008e5b7 4661 if (s->reconnect_time) {
d7a04fd7 4662 sioc = qio_channel_socket_new();
317856ca
DB		 4663 qio_channel_socket_connect_async(sioc, s->addr,
4664 qemu_chr_socket_connected,
4665 chr, NULL);
08b758b4 4666 } else {
d7a04fd7
MAL		 4667 if (s->is_listen) {
4668 sioc = qio_channel_socket_new();
4669 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4670 goto error;
4671 }
4672 s->listen_ioc = sioc;
4673 if (is_waitconnect &&
4674 qemu_chr_wait_connected(chr, errp) < 0) {
4675 goto error;
4676 }
4677 if (!s->ioc) {
4678 s->listen_tag = qio_channel_add_watch(
4679 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4680 tcp_chr_accept, chr, NULL);
4681 }
4682 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4683 goto error;
4684 }
43ded1a0
CM		 4685 }
4686
4687 return chr;
a8fb5427
DB		 4688
4689 error:
08b758b4
DB		 4690 if (sioc) {
4691 object_unref(OBJECT(sioc));
4692 }
a8fb5427
DB		 4693 if (s->tls_creds) {
4694 object_unref(OBJECT(s->tls_creds));
4695 }
4696 g_free(s);
4697 qemu_chr_free_common(chr);
4698 return NULL;
f6bd5d6e
GH		 4699}
4700
e79b80da
PB		 4701static CharDriverState *qmp_chardev_open_udp(const char *id,
4702 ChardevBackend *backend,
4703 ChardevReturn *ret,
08d0ab3f 4704 Error **errp)
3ecc059d 4705{
32bafa8f 4706 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4707 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4708 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4709
9894dc0c 4710 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4711 udp->local, udp->remote,
9894dc0c
DB		 4712 errp) < 0) {
4713 object_unref(OBJECT(sioc));
3ecc059d
GH		 4714 return NULL;
4715 }
9894dc0c 4716 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4717}
4718
0a73336d
DB		 4719
4720bool qemu_chr_has_feature(CharDriverState *chr,
4721 CharDriverFeature feature)
4722{
4723 return test_bit(feature, chr->features);
4724}
4725
4726void qemu_chr_set_feature(CharDriverState *chr,
4727 CharDriverFeature feature)
4728{
4729 return set_bit(feature, chr->features);
4730}
4731
f1a1a356
GH		 4732ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4733 Error **errp)
4734{
4735 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4736 CharDriverState *chr = NULL;
eaeba653 4737 Error *local_err = NULL;
4ca17281
PB		 4738 GSList *i;
4739 CharDriver *cd;
f1a1a356
GH		 4740
4741 chr = qemu_chr_find(id);
4742 if (chr) {
4743 error_setg(errp, "Chardev '%s' already exists", id);
4744 g_free(ret);
4745 return NULL;
4746 }
4747
4ca17281
PB		 4748 for (i = backends; i; i = i->next) {
4749 cd = i->data;
4750
130257dc 4751 if (cd->kind == backend->type) {
4ca17281
PB		 4752 chr = cd->create(id, backend, ret, &local_err);
4753 if (local_err) {
4754 error_propagate(errp, local_err);
4755 goto out_error;
4756 }
4757 break;
4758 }
4759 }
4760
4761 if (chr == NULL) {
1c3af0f4
PB		 4762 assert(!i);
4763 error_setg(errp, "chardev backend not available");
4764 goto out_error;
eaeba653
PB		 4765 }
4766
4767 chr->label = g_strdup(id);
4768 chr->avail_connections =
130257dc 4769 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4770 if (!chr->filename) {
130257dc 4771 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4772 }
eaeba653
PB		 4773 if (!chr->explicit_be_open) {
4774 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4775 }
4776 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4777 return ret;
4778
4779out_error:
4780 g_free(ret);
4781 return NULL;
f1a1a356
GH		 4782}
4783
4784void qmp_chardev_remove(const char *id, Error **errp)
4785{
4786 CharDriverState *chr;
4787
4788 chr = qemu_chr_find(id);
8108fd3e 4789 if (chr == NULL) {
f1a1a356
GH		 4790 error_setg(errp, "Chardev '%s' not found", id);
4791 return;
4792 }
4793 if (chr->chr_can_read || chr->chr_read ||
4794 chr->chr_event || chr->handler_opaque) {
4795 error_setg(errp, "Chardev '%s' is busy", id);
4796 return;
4797 }
33577b47
PD		 4798 if (chr->replay) {
4799 error_setg(errp,
4800 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4801 return;
4802 }
f1a1a356
GH		 4803 qemu_chr_delete(chr);
4804}
d654f34e 4805
aa5cb7f5 4806void qemu_chr_cleanup(void)
c1111a24
MAL		 4807{
4808 CharDriverState *chr, *tmp;
4809
4810 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4811 qemu_chr_delete(chr);
4812 }
4813}
4814
d654f34e
AL		 4815static void register_types(void)
4816{
4ca17281 4817 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4818 qemu_chr_open_null);
e4d50d47 4819 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4820 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4821 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4822 qmp_chardev_open_udp);
e4d50d47 4823 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4824 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4825 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4826 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4827 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4828 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4829#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4830 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4831 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4832 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4833 qemu_chr_parse_serial, qmp_chardev_open_serial);
4834#endif
38bfb1a6 4835#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4836 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4837 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4838 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4839 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4840#endif
c2e75a43 4841#ifdef HAVE_CHARDEV_PTY
4ca17281 4842 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4843 qemu_chr_open_pty);
4844#endif
122e5ed4 4845#ifdef _WIN32
4ca17281 4846 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4847 qemu_chr_open_win_con);
4848#endif
e4d50d47 4849 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4850 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4851 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4852 qemu_chr_open_mux);
c11ed966 4853 /* Bug-compatibility: */
e4d50d47 4854 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4855 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4856 /* this must be done after machine init, since we register FEs with muxes
4857 * as part of realize functions like serial_isa_realizefn when -nographic
4858 * is specified
4859 */
4860 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4861}
4862
4863type_init(register_types);
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