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char: replace avail_connections
[mirror_qemu.git] / qemu-char.c
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6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
37f9e0a2 35#include "qapi/clone-visitor.h"
cfb429cb 36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
517b3d40 42#include "qemu/help_option.h"
6f97dba0 43
6f97dba0
AL		 44#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
6f97dba0 50#include <sys/ioctl.h>
24646c7e 51#include <sys/resource.h>
6f97dba0
AL		 52#include <sys/socket.h>
53#include <netinet/in.h>
24646c7e 54#include <net/if.h>
24646c7e 55#include <arpa/inet.h>
6f97dba0
AL		 56#include <netdb.h>
57#include <sys/select.h>
71e72a19 58#ifdef CONFIG_BSD
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
6f97dba0
AL		 72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
c4095726 90#define TCP_MAX_FDS 16
9bd7854e 91
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{
a4afa548
MAL		 195 CharBackend *be = s->be;
196
73cdf3f2
AG		 197 /* Keep track if the char device is open */
198 switch (event) {
199 case CHR_EVENT_OPENED:
16665b94 200 s->be_open = 1;
73cdf3f2
AG		 201 break;
202 case CHR_EVENT_CLOSED:
16665b94 203 s->be_open = 0;
73cdf3f2
AG		 204 break;
205 }
206
a4afa548 207 if (!be || !be->chr_event) {
6f97dba0 208 return;
a4afa548
MAL		 209 }
210
211 be->chr_event(be->opaque, event);
6f97dba0
AL		 212}
213
fee204fd 214void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 215{
bd5c51ee 216 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 217}
218
d0d7708b
DB		 219
220/* Not reporting errors from writing to logfile, as logs are
221 * defined to be "best effort" only */
222static void qemu_chr_fe_write_log(CharDriverState *s,
223 const uint8_t *buf, size_t len)
224{
225 size_t done = 0;
226 ssize_t ret;
227
228 if (s->logfd < 0) {
229 return;
230 }
231
232 while (done < len) {
53628efb
DB		 233 retry:
234 ret = write(s->logfd, buf + done, len - done);
235 if (ret == -1 && errno == EAGAIN) {
236 g_usleep(100);
237 goto retry;
238 }
d0d7708b
DB		 239
240 if (ret <= 0) {
241 return;
242 }
243 done += ret;
244 }
245}
246
33577b47
PD		 247static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
248{
249 int res = 0;
250 *offset = 0;
251
252 qemu_mutex_lock(&s->chr_write_lock);
253 while (*offset < len) {
53628efb
DB		 254 retry:
255 res = s->chr_write(s, buf + *offset, len - *offset);
256 if (res < 0 && errno == EAGAIN) {
257 g_usleep(100);
258 goto retry;
259 }
33577b47
PD		 260
261 if (res <= 0) {
262 break;
263 }
264
265 *offset += res;
266 }
267 if (*offset > 0) {
268 qemu_chr_fe_write_log(s, buf, *offset);
269 }
270 qemu_mutex_unlock(&s->chr_write_lock);
271
272 return res;
273}
274
5345fdb4 275int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len)
6f97dba0 276{
5345fdb4 277 CharDriverState *s = be->chr;
9005b2a7
PB		 278 int ret;
279
fa394ed6
MAL		 280 if (!s) {
281 return 0;
282 }
283
33577b47
PD		 284 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
285 int offset;
286 replay_char_write_event_load(&ret, &offset);
287 assert(offset <= len);
288 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
289 return ret;
290 }
291
9005b2a7
PB		 292 qemu_mutex_lock(&s->chr_write_lock);
293 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 294
295 if (ret > 0) {
296 qemu_chr_fe_write_log(s, buf, ret);
297 }
298
9005b2a7 299 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 300
301 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
302 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
303 }
304
9005b2a7 305 return ret;
6f97dba0
AL		 306}
307
5345fdb4 308static int qemu_chr_write_all(CharDriverState *s, const uint8_t *buf, int len)
cd18720a 309{
33577b47
PD		 310 int offset;
311 int res;
cd18720a 312
33577b47
PD		 313 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
314 replay_char_write_event_load(&res, &offset);
315 assert(offset <= len);
316 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
317 return res;
318 }
cd18720a 319
33577b47 320 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 321
33577b47
PD		 322 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
323 replay_char_write_event_save(res, offset);
cd18720a
AL		 324 }
325
9005b2a7
PB		 326 if (res < 0) {
327 return res;
328 }
cd18720a
AL		 329 return offset;
330}
331
5345fdb4 332int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len)
7b0bfdf5 333{
5345fdb4
MAL		 334 CharDriverState *s = be->chr;
335
fa394ed6
MAL		 336 if (!s) {
337 return 0;
338 }
339
5345fdb4
MAL		 340 return qemu_chr_write_all(s, buf, len);
341}
342
343int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len)
344{
345 CharDriverState *s = be->chr;
7b0bfdf5
NN		 346 int offset = 0, counter = 10;
347 int res;
348
fa394ed6 349 if (!s || !s->chr_sync_read) {
7b0bfdf5
NN		 350 return 0;
351 }
fa394ed6 352
33577b47
PD		 353 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
354 return replay_char_read_all_load(buf);
355 }
7b0bfdf5
NN		 356
357 while (offset < len) {
53628efb
DB		 358 retry:
359 res = s->chr_sync_read(s, buf + offset, len - offset);
360 if (res == -1 && errno == EAGAIN) {
361 g_usleep(100);
362 goto retry;
363 }
7b0bfdf5
NN		 364
365 if (res == 0) {
366 break;
367 }
368
369 if (res < 0) {
33577b47
PD		 370 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
371 replay_char_read_all_save_error(res);
372 }
7b0bfdf5
NN		 373 return res;
374 }
375
376 offset += res;
377
378 if (!counter--) {
379 break;
380 }
381 }
382
33577b47
PD		 383 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
384 replay_char_read_all_save_buf(buf, offset);
385 }
7b0bfdf5
NN		 386 return offset;
387}
388
5345fdb4 389int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg)
6f97dba0 390{
5345fdb4 391 CharDriverState *s = be->chr;
33577b47 392 int res;
fa394ed6
MAL		 393
394 if (!s || !s->chr_ioctl || s->replay) {
33577b47
PD		 395 res = -ENOTSUP;
396 } else {
397 res = s->chr_ioctl(s, cmd, arg);
398 }
399
400 return res;
6f97dba0
AL		 401}
402
909cda12 403int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0 404{
a4afa548
MAL		 405 CharBackend *be = s->be;
406
407 if (!be || !be->chr_can_read) {
6f97dba0 408 return 0;
a4afa548
MAL		 409 }
410
411 return be->chr_can_read(be->opaque);
6f97dba0
AL		 412}
413
33577b47 414void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 415{
a4afa548
MAL		 416 CharBackend *be = s->be;
417
418 if (be && be->chr_read) {
419 be->chr_read(be->opaque, buf, len);
ac310734 420 }
6f97dba0
AL		 421}
422
33577b47
PD		 423void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
424{
425 if (s->replay) {
426 if (replay_mode == REPLAY_MODE_PLAY) {
427 return;
428 }
429 replay_chr_be_write(s, buf, len);
430 } else {
431 qemu_chr_be_write_impl(s, buf, len);
432 }
433}
434
5345fdb4 435int qemu_chr_fe_get_msgfd(CharBackend *be)
7d174059 436{
5345fdb4 437 CharDriverState *s = be->chr;
c76bf6bb 438 int fd;
5345fdb4 439 int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1;
fa394ed6 440 if (s && s->replay) {
33577b47
PD		 441 fprintf(stderr,
442 "Replay: get msgfd is not supported for serial devices yet\n");
443 exit(1);
444 }
445 return res;
c76bf6bb
NN		 446}
447
5345fdb4 448int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len)
c76bf6bb 449{
5345fdb4
MAL		 450 CharDriverState *s = be->chr;
451
fa394ed6
MAL		 452 if (!s) {
453 return -1;
454 }
455
c76bf6bb 456 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 457}
458
5345fdb4 459int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num)
d39aac7a 460{
5345fdb4
MAL		 461 CharDriverState *s = be->chr;
462
fa394ed6
MAL		 463 if (!s) {
464 return -1;
465 }
466
d39aac7a
NN		 467 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
468}
469
13661089
DB		 470int qemu_chr_add_client(CharDriverState *s, int fd)
471{
472 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
473}
474
5345fdb4 475void qemu_chr_fe_accept_input(CharBackend *be)
6f97dba0 476{
5345fdb4
MAL		 477 CharDriverState *s = be->chr;
478
fa394ed6
MAL		 479 if (!s) {
480 return;
481 }
482
6f97dba0
AL		 483 if (s->chr_accept_input)
484 s->chr_accept_input(s);
98c8ee1d 485 qemu_notify_event();
6f97dba0
AL		 486}
487
5345fdb4 488void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
6f97dba0 489{
9bd7854e 490 char buf[READ_BUF_LEN];
6f97dba0
AL		 491 va_list ap;
492 va_start(ap, fmt);
493 vsnprintf(buf, sizeof(buf), fmt, ap);
90f998f5
DB		 494 /* XXX this blocks entire thread. Rewrite to use
495 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 496 qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 497 va_end(ap);
498}
499
386a5a1e 500static void remove_fd_in_watch(CharDriverState *chr);
6dfa8298
MAL		 501static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context);
502static void mux_set_focus(MuxDriver *d, int focus);
503
6f97dba0
AL		 504static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
505{
506 return len;
507}
508
0d64992b
PB		 509static CharDriverState *qemu_chr_open_null(const char *id,
510 ChardevBackend *backend,
511 ChardevReturn *ret,
512 Error **errp)
6f97dba0
AL		 513{
514 CharDriverState *chr;
32bafa8f 515 ChardevCommon *common = backend->u.null.data;
6f97dba0 516
d0d7708b
DB		 517 chr = qemu_chr_alloc(common, errp);
518 if (!chr) {
519 return NULL;
520 }
6f97dba0 521 chr->chr_write = null_chr_write;
bd5c51ee 522 chr->explicit_be_open = true;
1f51470d 523 return chr;
6f97dba0
AL		 524}
525
526/* MUX driver for serial I/O splitting */
6f97dba0
AL		 527#define MAX_MUX 4
528#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
529#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
6dfa8298 530struct MuxDriver {
a4afa548 531 CharBackend *backends[MAX_MUX];
ecb672d1 532 CharBackend chr;
799f1f23 533 int focus;
6f97dba0
AL		 534 int mux_cnt;
535 int term_got_escape;
536 int max_size;
a80bf99f
AL		 537 /* Intermediate input buffer allows to catch escape sequences even if the
538 currently active device is not accepting any input - but only until it
539 is full as well. */
540 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
541 int prod[MAX_MUX];
542 int cons[MAX_MUX];
2d22959d 543 int timestamps;
9005b2a7
PB		 544
545 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 546 int linestart;
2d22959d 547 int64_t timestamps_start;
6dfa8298 548};
6f97dba0 549
9005b2a7 550/* Called with chr_write_lock held. */
6f97dba0
AL		 551static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
552{
553 MuxDriver *d = chr->opaque;
554 int ret;
2d22959d 555 if (!d->timestamps) {
5345fdb4 556 ret = qemu_chr_fe_write(&d->chr, buf, len);
6f97dba0
AL		 557 } else {
558 int i;
559
560 ret = 0;
4ab312f7
JK		 561 for (i = 0; i < len; i++) {
562 if (d->linestart) {
6f97dba0
AL		 563 char buf1[64];
564 int64_t ti;
565 int secs;
566
bc72ad67 567 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 568 if (d->timestamps_start == -1)
569 d->timestamps_start = ti;
570 ti -= d->timestamps_start;
a4bb1db8 571 secs = ti / 1000;
6f97dba0
AL		 572 snprintf(buf1, sizeof(buf1),
573 "[%02d:%02d:%02d.%03d] ",
574 secs / 3600,
575 (secs / 60) % 60,
576 secs % 60,
a4bb1db8 577 (int)(ti % 1000));
90f998f5
DB		 578 /* XXX this blocks entire thread. Rewrite to use
579 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4
MAL		 580 qemu_chr_fe_write_all(&d->chr,
581 (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 582 d->linestart = 0;
583 }
5345fdb4 584 ret += qemu_chr_fe_write(&d->chr, buf + i, 1);
4ab312f7
JK		 585 if (buf[i] == '\n') {
586 d->linestart = 1;
6f97dba0
AL		 587 }
588 }
589 }
590 return ret;
591}
592
593static const char * const mux_help[] = {
594 "% h print this help\n\r",
595 "% x exit emulator\n\r",
596 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 597 "% t toggle console timestamps\n\r",
6f97dba0
AL		 598 "% b send break (magic sysrq)\n\r",
599 "% c switch between console and monitor\n\r",
600 "% % sends %\n\r",
601 NULL
602};
603
604int term_escape_char = 0x01; /* ctrl-a is used for escape */
605static void mux_print_help(CharDriverState *chr)
606{
607 int i, j;
608 char ebuf[15] = "Escape-Char";
609 char cbuf[50] = "\n\r";
610
611 if (term_escape_char > 0 && term_escape_char < 26) {
612 snprintf(cbuf, sizeof(cbuf), "\n\r");
613 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
614 } else {
615 snprintf(cbuf, sizeof(cbuf),
616 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
617 term_escape_char);
618 }
90f998f5
DB		 619 /* XXX this blocks entire thread. Rewrite to use
620 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 621 qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 622 for (i = 0; mux_help[i] != NULL; i++) {
623 for (j=0; mux_help[i][j] != '\0'; j++) {
624 if (mux_help[i][j] == '%')
5345fdb4 625 qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 626 else
5345fdb4 627 qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 628 }
629 }
630}
631
2724b180
AL		 632static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
633{
a4afa548
MAL		 634 CharBackend *be = d->backends[mux_nr];
635
636 if (be && be->chr_event) {
637 be->chr_event(be->opaque, event);
638 }
2724b180
AL		 639}
640
6f97dba0
AL		 641static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
642{
643 if (d->term_got_escape) {
644 d->term_got_escape = 0;
645 if (ch == term_escape_char)
646 goto send_char;
647 switch(ch) {
648 case '?':
649 case 'h':
650 mux_print_help(chr);
651 break;
652 case 'x':
653 {
654 const char *term = "QEMU: Terminated\n\r";
5345fdb4 655 qemu_chr_write_all(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 656 exit(0);
657 break;
658 }
659 case 's':
da31d594 660 blk_commit_all();
6f97dba0
AL		 661 break;
662 case 'b':
a425d23f 663 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 664 break;
665 case 'c':
6dfa8298 666 assert(d->mux_cnt > 0); /* handler registered with first fe */
6f97dba0 667 /* Switch to the next registered device */
6dfa8298 668 mux_set_focus(d, (d->focus + 1) % d->mux_cnt);
6f97dba0 669 break;
2d22959d
JK		 670 case 't':
671 d->timestamps = !d->timestamps;
672 d->timestamps_start = -1;
4ab312f7 673 d->linestart = 0;
2d22959d 674 break;
6f97dba0
AL		 675 }
676 } else if (ch == term_escape_char) {
677 d->term_got_escape = 1;
678 } else {
679 send_char:
680 return 1;
681 }
682 return 0;
683}
684
685static void mux_chr_accept_input(CharDriverState *chr)
686{
6f97dba0 687 MuxDriver *d = chr->opaque;
799f1f23 688 int m = d->focus;
a4afa548 689 CharBackend *be = d->backends[m];
6f97dba0 690
a4afa548
MAL		 691 while (be && d->prod[m] != d->cons[m] &&
692 be->chr_can_read && be->chr_can_read(be->opaque)) {
693 be->chr_read(be->opaque,
694 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 695 }
696}
697
698static int mux_chr_can_read(void *opaque)
699{
700 CharDriverState *chr = opaque;
701 MuxDriver *d = chr->opaque;
799f1f23 702 int m = d->focus;
a4afa548 703 CharBackend *be = d->backends[m];
6f97dba0 704
a4afa548 705 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) {
6f97dba0 706 return 1;
a4afa548
MAL		 707 }
708
709 if (be && be->chr_can_read) {
710 return be->chr_can_read(be->opaque);
711 }
712
6f97dba0
AL		 713 return 0;
714}
715
716static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
717{
718 CharDriverState *chr = opaque;
719 MuxDriver *d = chr->opaque;
799f1f23 720 int m = d->focus;
a4afa548 721 CharBackend *be = d->backends[m];
6f97dba0
AL		 722 int i;
723
a4afa548 724 mux_chr_accept_input(opaque);
6f97dba0 725
a4afa548 726 for (i = 0; i < size; i++)
6f97dba0 727 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 728 if (d->prod[m] == d->cons[m] &&
a4afa548
MAL		 729 be && be->chr_can_read &&
730 be->chr_can_read(be->opaque))
731 be->chr_read(be->opaque, &buf[i], 1);
6f97dba0 732 else
a80bf99f 733 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 734 }
735}
736
737static void mux_chr_event(void *opaque, int event)
738{
739 CharDriverState *chr = opaque;
740 MuxDriver *d = chr->opaque;
741 int i;
742
743 /* Send the event to all registered listeners */
744 for (i = 0; i < d->mux_cnt; i++)
2724b180 745 mux_chr_send_event(d, i, 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
72ac8762 796static void mux_chr_free(struct CharDriverState *chr)
1371a369
MAL		 797{
798 MuxDriver *d = chr->opaque;
a4afa548 799 int i;
1371a369 800
a4afa548
MAL		 801 for (i = 0; i < d->mux_cnt; i++) {
802 CharBackend *be = d->backends[i];
803 if (be) {
804 be->chr = NULL;
805 }
806 }
c39860e6 807 qemu_chr_fe_deinit(&d->chr);
1371a369
MAL		 808 g_free(d);
809}
810
6dfa8298
MAL		 811static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context)
812{
813 MuxDriver *d = chr->opaque;
814
815 /* Fix up the real driver with mux routines */
ecb672d1
MAL		 816 qemu_chr_fe_set_handlers(&d->chr,
817 mux_chr_can_read,
818 mux_chr_read,
819 mux_chr_event,
820 chr,
39ab61c6 821 context, true);
6dfa8298
MAL		 822}
823
824static void mux_set_focus(MuxDriver *d, int focus)
825{
826 assert(focus >= 0);
827 assert(focus < d->mux_cnt);
828
829 if (d->focus != -1) {
830 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
831 }
832
833 d->focus = focus;
834 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
835}
836
3c0e5a4a
PB		 837static CharDriverState *qemu_chr_open_mux(const char *id,
838 ChardevBackend *backend,
839 ChardevReturn *ret, Error **errp)
6f97dba0 840{
32bafa8f 841 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 842 CharDriverState *chr, *drv;
6f97dba0 843 MuxDriver *d;
f194a1ae 844 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 845
3c0e5a4a
PB		 846 drv = qemu_chr_find(mux->chardev);
847 if (drv == NULL) {
848 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
849 return NULL;
850 }
851
d0d7708b
DB		 852 chr = qemu_chr_alloc(common, errp);
853 if (!chr) {
854 return NULL;
855 }
2d528d45 856 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 857
858 chr->opaque = d;
799f1f23 859 d->focus = -1;
72ac8762 860 chr->chr_free = mux_chr_free;
6f97dba0 861 chr->chr_write = mux_chr_write;
6f97dba0 862 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 863 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 864 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 865 if (drv->chr_add_watch) {
866 chr->chr_add_watch = mux_chr_add_watch;
867 }
7b7ab18d
MR		 868 /* only default to opened state if we've realized the initial
869 * set of muxes
870 */
871 chr->explicit_be_open = muxes_realized ? 0 : 1;
872 chr->is_mux = 1;
5345fdb4 873 if (!qemu_chr_fe_init(&d->chr, drv, errp)) {
ecb672d1
MAL		 874 qemu_chr_free(chr);
875 return NULL;
876 }
73cdf3f2 877
6f97dba0
AL		 878 return chr;
879}
880
94a40fc5
MAL		 881CharDriverState *qemu_chr_fe_get_driver(CharBackend *be)
882{
883 return be->chr;
884}
885
886bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp)
887{
888 int tag = 0;
889
890 if (s->is_mux) {
3aef23d7
MAL		 891 MuxDriver *d = s->opaque;
892
893 if (d->mux_cnt >= MAX_MUX) {
894 goto unavailable;
94a40fc5 895 }
3aef23d7
MAL		 896
897 d->backends[d->mux_cnt] = b;
898 tag = d->mux_cnt++;
899 } else if (s->be) {
900 goto unavailable;
a4afa548
MAL		 901 } else {
902 s->be = b;
94a40fc5
MAL		 903 }
904
830896af 905 b->fe_open = false;
94a40fc5
MAL		 906 b->tag = tag;
907 b->chr = s;
94a40fc5 908 return true;
3aef23d7
MAL		 909
910unavailable:
911 error_setg(errp, QERR_DEVICE_IN_USE, s->label);
912 return false;
94a40fc5
MAL		 913}
914
a4afa548
MAL		 915static bool qemu_chr_is_busy(CharDriverState *s)
916{
917 if (s->is_mux) {
918 MuxDriver *d = s->opaque;
919 return d->mux_cnt >= 0;
920 } else {
921 return s->be != NULL;
922 }
923}
924
c39860e6
MAL		 925void qemu_chr_fe_deinit(CharBackend *b)
926{
927 assert(b);
928
929 if (b->chr) {
39ab61c6 930 qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true);
a4afa548
MAL		 931 b->chr->be = NULL;
932 if (b->chr->is_mux) {
933 MuxDriver *d = b->chr->opaque;
934 d->backends[b->tag] = NULL;
935 }
c39860e6
MAL		 936 b->chr = NULL;
937 }
938}
939
94a40fc5
MAL		 940void qemu_chr_fe_set_handlers(CharBackend *b,
941 IOCanReadHandler *fd_can_read,
942 IOReadHandler *fd_read,
943 IOEventHandler *fd_event,
944 void *opaque,
39ab61c6
MAL		 945 GMainContext *context,
946 bool set_open)
94a40fc5 947{
386f07d1
MAL		 948 CharDriverState *s;
949 int fe_open;
950
951 s = b->chr;
952 if (!s) {
94a40fc5
MAL		 953 return;
954 }
955
386f07d1
MAL		 956 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
957 fe_open = 0;
958 remove_fd_in_watch(s);
959 } else {
960 fe_open = 1;
961 }
a4afa548
MAL		 962 b->chr_can_read = fd_can_read;
963 b->chr_read = fd_read;
964 b->chr_event = fd_event;
965 b->opaque = opaque;
386f07d1 966 if (s->chr_update_read_handler) {
a4afa548 967 s->chr_update_read_handler(s, context);
386f07d1
MAL		 968 }
969
39ab61c6 970 if (set_open) {
386f07d1
MAL		 971 qemu_chr_fe_set_open(b, fe_open);
972 }
94a40fc5 973
386f07d1
MAL		 974 if (fe_open) {
975 qemu_chr_fe_take_focus(b);
976 /* We're connecting to an already opened device, so let's make sure we
977 also get the open event */
978 if (s->be_open) {
979 qemu_chr_be_generic_open(s);
980 }
981 }
982
983 if (s->is_mux) {
984 mux_chr_set_handlers(s, context);
94a40fc5
MAL		 985 }
986}
987
988void qemu_chr_fe_take_focus(CharBackend *b)
989{
fa394ed6
MAL		 990 if (!b->chr) {
991 return;
992 }
993
94a40fc5
MAL		 994 if (b->chr->is_mux) {
995 mux_set_focus(b->chr->opaque, b->tag);
996 }
997}
6f97dba0 998
96c63847
AL		 999typedef struct IOWatchPoll
1000{
d185c094
PB		 1001 GSource parent;
1002
9894dc0c 1003 QIOChannel *ioc;
96c63847 1004 GSource *src;
96c63847
AL		 1005
1006 IOCanReadHandler *fd_can_read;
1e885b25 1007 GSourceFunc fd_read;
96c63847 1008 void *opaque;
e92aa36a 1009 GMainContext *context;
96c63847
AL		 1010} IOWatchPoll;
1011
96c63847
AL		 1012static IOWatchPoll *io_watch_poll_from_source(GSource *source)
1013{
d185c094 1014 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 1015}
1016
e92aa36a
ZC		 1017static gboolean io_watch_poll_prepare(GSource *source,
1018 gint *timeout_)
96c63847
AL		 1019{
1020 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 1021 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 1022 bool was_active = iwp->src != NULL;
d185c094 1023 if (was_active == now_active) {
96c63847
AL		 1024 return FALSE;
1025 }
1026
d185c094 1027 if (now_active) {
9894dc0c
DB		 1028 iwp->src = qio_channel_create_watch(
1029 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 1030 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
e92aa36a 1031 g_source_attach(iwp->src, iwp->context);
d185c094 1032 } else {
1e885b25
PB		 1033 g_source_destroy(iwp->src);
1034 g_source_unref(iwp->src);
1035 iwp->src = NULL;
d185c094
PB		 1036 }
1037 return FALSE;
96c63847
AL		 1038}
1039
1040static gboolean io_watch_poll_check(GSource *source)
1041{
d185c094 1042 return FALSE;
96c63847
AL		 1043}
1044
1045static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
1046 gpointer user_data)
1047{
d185c094 1048 abort();
96c63847
AL		 1049}
1050
1051static void io_watch_poll_finalize(GSource *source)
1052{
2b316774
PB		 1053 /* Due to a glib bug, removing the last reference to a source
1054 * inside a finalize callback causes recursive locking (and a
1055 * deadlock). This is not a problem inside other callbacks,
1056 * including dispatch callbacks, so we call io_remove_watch_poll
1057 * to remove this source. At this point, iwp->src must
1058 * be NULL, or we would leak it.
1059 *
1060 * This would be solved much more elegantly by child sources,
1061 * but we support older glib versions that do not have them.
1062 */
96c63847 1063 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 1064 assert(iwp->src == NULL);
96c63847
AL		 1065}
1066
1067static GSourceFuncs io_watch_poll_funcs = {
1068 .prepare = io_watch_poll_prepare,
1069 .check = io_watch_poll_check,
1070 .dispatch = io_watch_poll_dispatch,
1071 .finalize = io_watch_poll_finalize,
1072};
1073
1074/* Can only be used for read */
9894dc0c 1075static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 1076 IOCanReadHandler *fd_can_read,
9894dc0c 1077 QIOChannelFunc fd_read,
e92aa36a
ZC		 1078 gpointer user_data,
1079 GMainContext *context)
96c63847
AL		 1080{
1081 IOWatchPoll *iwp;
0ca5aa4f 1082 int tag;
96c63847 1083
e92aa36a
ZC		 1084 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
1085 sizeof(IOWatchPoll));
96c63847
AL		 1086 iwp->fd_can_read = fd_can_read;
1087 iwp->opaque = user_data;
9894dc0c 1088 iwp->ioc = ioc;
1e885b25
PB		 1089 iwp->fd_read = (GSourceFunc) fd_read;
1090 iwp->src = NULL;
e92aa36a 1091 iwp->context = context;
96c63847 1092
e92aa36a 1093 tag = g_source_attach(&iwp->parent, context);
0ca5aa4f
PB		 1094 g_source_unref(&iwp->parent);
1095 return tag;
96c63847
AL		 1096}
1097
2b316774
PB		 1098static void io_remove_watch_poll(guint tag)
1099{
1100 GSource *source;
1101 IOWatchPoll *iwp;
1102
1103 g_return_if_fail (tag > 0);
1104
1105 source = g_main_context_find_source_by_id(NULL, tag);
1106 g_return_if_fail (source != NULL);
1107
1108 iwp = io_watch_poll_from_source(source);
1109 if (iwp->src) {
1110 g_source_destroy(iwp->src);
1111 g_source_unref(iwp->src);
1112 iwp->src = NULL;
1113 }
1114 g_source_destroy(&iwp->parent);
1115}
1116
26da70c7
AS		 1117static void remove_fd_in_watch(CharDriverState *chr)
1118{
1119 if (chr->fd_in_tag) {
1120 io_remove_watch_poll(chr->fd_in_tag);
1121 chr->fd_in_tag = 0;
1122 }
1123}
1124
96c63847 1125
9894dc0c
DB		 1126static int io_channel_send_full(QIOChannel *ioc,
1127 const void *buf, size_t len,
1128 int *fds, size_t nfds)
76a9644b 1129{
9894dc0c 1130 size_t offset = 0;
76a9644b 1131
9894dc0c
DB		 1132 while (offset < len) {
1133 ssize_t ret = 0;
1134 struct iovec iov = { .iov_base = (char *)buf + offset,
1135 .iov_len = len - offset };
1136
1137 ret = qio_channel_writev_full(
1138 ioc, &iov, 1,
1139 fds, nfds, NULL);
1140 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 1141 if (offset) {
1142 return offset;
1143 }
76a9644b 1144
e046fb44
DB		 1145 errno = EAGAIN;
1146 return -1;
1147 } else if (ret < 0) {
9894dc0c
DB		 1148 errno = EINVAL;
1149 return -1;
1150 }
76a9644b 1151
9894dc0c
DB		 1152 offset += ret;
1153 }
76a9644b 1154
9894dc0c 1155 return offset;
76a9644b
AL		 1156}
1157
9894dc0c 1158
0ff0fad2 1159#ifndef _WIN32
9894dc0c 1160static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 1161{
9894dc0c 1162 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 1163}
96c63847 1164
44ab9ed4 1165
a29753f8
AL		 1166typedef struct FDCharDriver {
1167 CharDriverState *chr;
9894dc0c 1168 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 1169 int max_size;
1170} FDCharDriver;
1171
9005b2a7 1172/* Called with chr_write_lock held. */
6f97dba0
AL		 1173static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1174{
1175 FDCharDriver *s = chr->opaque;
a29753f8 1176
9894dc0c 1177 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1178}
1179
9894dc0c 1180static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1181{
1182 CharDriverState *chr = opaque;
1183 FDCharDriver *s = chr->opaque;
a29753f8 1184 int len;
9bd7854e 1185 uint8_t buf[READ_BUF_LEN];
9894dc0c 1186 ssize_t ret;
6f97dba0
AL		 1187
1188 len = sizeof(buf);
a29753f8 1189 if (len > s->max_size) {
6f97dba0 1190 len = s->max_size;
a29753f8
AL		 1191 }
1192 if (len == 0) {
cdbf6e16 1193 return TRUE;
a29753f8
AL		 1194 }
1195
9894dc0c
DB		 1196 ret = qio_channel_read(
1197 chan, (gchar *)buf, len, NULL);
1198 if (ret == 0) {
26da70c7 1199 remove_fd_in_watch(chr);
a425d23f 1200 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1201 return FALSE;
6f97dba0 1202 }
9894dc0c
DB		 1203 if (ret > 0) {
1204 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1205 }
a29753f8
AL		 1206
1207 return TRUE;
1208}
1209
1210static int fd_chr_read_poll(void *opaque)
1211{
1212 CharDriverState *chr = opaque;
1213 FDCharDriver *s = chr->opaque;
1214
1215 s->max_size = qemu_chr_be_can_write(chr);
1216 return s->max_size;
6f97dba0
AL		 1217}
1218
23673ca7
AL		 1219static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1220{
1221 FDCharDriver *s = chr->opaque;
9894dc0c 1222 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1223}
1224
e92aa36a 1225static void fd_chr_update_read_handler(CharDriverState *chr,
a4afa548 1226 GMainContext *context)
6f97dba0
AL		 1227{
1228 FDCharDriver *s = chr->opaque;
1229
26da70c7 1230 remove_fd_in_watch(chr);
9894dc0c
DB		 1231 if (s->ioc_in) {
1232 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1233 fd_chr_read_poll,
e92aa36a
ZC		 1234 fd_chr_read, chr,
1235 context);
6f97dba0
AL		 1236 }
1237}
1238
72ac8762 1239static void fd_chr_free(struct CharDriverState *chr)
6f97dba0
AL		 1240{
1241 FDCharDriver *s = chr->opaque;
1242
26da70c7 1243 remove_fd_in_watch(chr);
9894dc0c
DB		 1244 if (s->ioc_in) {
1245 object_unref(OBJECT(s->ioc_in));
a29753f8 1246 }
9894dc0c
DB		 1247 if (s->ioc_out) {
1248 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1249 }
1250
7267c094 1251 g_free(s);
a425d23f 1252 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1253}
1254
1255/* open a character device to a unix fd */
d0d7708b
DB		 1256static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1257 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1258{
1259 CharDriverState *chr;
1260 FDCharDriver *s;
1261
d0d7708b
DB		 1262 chr = qemu_chr_alloc(backend, errp);
1263 if (!chr) {
1264 return NULL;
1265 }
2d528d45 1266 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1267 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1268 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1269 qemu_set_nonblock(fd_out);
a29753f8 1270 s->chr = chr;
6f97dba0 1271 chr->opaque = s;
23673ca7 1272 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1273 chr->chr_write = fd_chr_write;
1274 chr->chr_update_read_handler = fd_chr_update_read_handler;
72ac8762 1275 chr->chr_free = fd_chr_free;
6f97dba0 1276
6f97dba0
AL		 1277 return chr;
1278}
1279
20cbe7a2
PB		 1280static CharDriverState *qemu_chr_open_pipe(const char *id,
1281 ChardevBackend *backend,
1282 ChardevReturn *ret,
1283 Error **errp)
6f97dba0 1284{
32bafa8f 1285 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1286 int fd_in, fd_out;
0ff0fad2
DB		 1287 char *filename_in;
1288 char *filename_out;
548cbb36 1289 const char *filename = opts->device;
f194a1ae 1290 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1291
0ff0fad2
DB		 1292
1293 filename_in = g_strdup_printf("%s.in", filename);
1294 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1295 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1296 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1297 g_free(filename_in);
1298 g_free(filename_out);
6f97dba0
AL		 1299 if (fd_in < 0 || fd_out < 0) {
1300 if (fd_in >= 0)
1301 close(fd_in);
1302 if (fd_out >= 0)
1303 close(fd_out);
b181e047 1304 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1305 if (fd_in < 0) {
20cbe7a2 1306 error_setg_file_open(errp, errno, filename);
1f51470d 1307 return NULL;
a89dd6c3 1308 }
6f97dba0 1309 }
d0d7708b 1310 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1311}
1312
6f97dba0
AL		 1313/* init terminal so that we can grab keys */
1314static struct termios oldtty;
1315static int old_fd0_flags;
c88930a6 1316static bool stdio_in_use;
bb002513 1317static bool stdio_allow_signal;
e76d4420
GH		 1318static bool stdio_echo_state;
1319
1320static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1321
1322static void term_exit(void)
1323{
1324 tcsetattr (0, TCSANOW, &oldtty);
1325 fcntl(0, F_SETFL, old_fd0_flags);
1326}
1327
e76d4420
GH		 1328static void term_stdio_handler(int sig)
1329{
1330 /* restore echo after resume from suspend. */
1331 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1332}
1333
bb002513 1334static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1335{
1336 struct termios tty;
1337
e76d4420 1338 stdio_echo_state = echo;
0369364b 1339 tty = oldtty;
bb002513
PB		 1340 if (!echo) {
1341 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1342 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1343 tty.c_oflag |= OPOST;
1344 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1345 tty.c_cflag &= ~(CSIZE|PARENB);
1346 tty.c_cflag |= CS8;
1347 tty.c_cc[VMIN] = 1;
1348 tty.c_cc[VTIME] = 0;
1349 }
bb002513 1350 if (!stdio_allow_signal)
6f97dba0 1351 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1352
1353 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1354}
1355
72ac8762 1356static void qemu_chr_free_stdio(struct CharDriverState *chr)
6f97dba0
AL		 1357{
1358 term_exit();
72ac8762 1359 fd_chr_free(chr);
6f97dba0
AL		 1360}
1361
8c84b25d
PB		 1362static CharDriverState *qemu_chr_open_stdio(const char *id,
1363 ChardevBackend *backend,
1364 ChardevReturn *ret,
1365 Error **errp)
6f97dba0 1366{
32bafa8f 1367 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1368 CharDriverState *chr;
e76d4420 1369 struct sigaction act;
f194a1ae 1370 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1371
ab51b1d5 1372 if (is_daemonized()) {
8c84b25d 1373 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1374 return NULL;
1375 }
c88930a6
LL		 1376
1377 if (stdio_in_use) {
8c84b25d
PB		 1378 error_setg(errp, "cannot use stdio by multiple character devices");
1379 return NULL;
c88930a6
LL		 1380 }
1381
1382 stdio_in_use = true;
ed7a1540 1383 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1384 tcgetattr(0, &oldtty);
4ff12bdb 1385 qemu_set_nonblock(0);
ed7a1540 1386 atexit(term_exit);
0369364b 1387
e76d4420
GH		 1388 memset(&act, 0, sizeof(act));
1389 act.sa_handler = term_stdio_handler;
1390 sigaction(SIGCONT, &act, NULL);
1391
d0d7708b 1392 chr = qemu_chr_open_fd(0, 1, common, errp);
71200fb9
LM		 1393 if (!chr) {
1394 return NULL;
1395 }
72ac8762 1396 chr->chr_free = qemu_chr_free_stdio;
bb002513 1397 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1398 if (opts->has_signal) {
1399 stdio_allow_signal = opts->signal;
1400 }
5345fdb4 1401 qemu_chr_set_echo_stdio(chr, false);
6f97dba0 1402
1f51470d 1403 return chr;
6f97dba0
AL		 1404}
1405
6f97dba0 1406#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1407 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1408 || defined(__GLIBC__)
6f97dba0 1409
d809ab95
PB		 1410#define HAVE_CHARDEV_SERIAL 1
1411#define HAVE_CHARDEV_PTY 1
e551498e 1412
6f97dba0 1413typedef struct {
9894dc0c 1414 QIOChannel *ioc;
6f97dba0 1415 int read_bytes;
9005b2a7
PB		 1416
1417 /* Protected by the CharDriverState chr_write_lock. */
1418 int connected;
8aa33caf 1419 guint timer_tag;
7b3621f4 1420 guint open_tag;
6f97dba0
AL		 1421} PtyCharDriver;
1422
9005b2a7 1423static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1424static void pty_chr_state(CharDriverState *chr, int connected);
1425
8aa33caf
AL		 1426static gboolean pty_chr_timer(gpointer opaque)
1427{
1428 struct CharDriverState *chr = opaque;
1429 PtyCharDriver *s = chr->opaque;
1430
9005b2a7 1431 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1432 s->timer_tag = 0;
7b3621f4 1433 s->open_tag = 0;
b0d768c3
GH		 1434 if (!s->connected) {
1435 /* Next poll ... */
9005b2a7 1436 pty_chr_update_read_handler_locked(chr);
b0d768c3 1437 }
9005b2a7 1438 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1439 return FALSE;
1440}
1441
9005b2a7 1442/* Called with chr_write_lock held. */
8aa33caf
AL		 1443static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1444{
1445 PtyCharDriver *s = chr->opaque;
1446
1447 if (s->timer_tag) {
1448 g_source_remove(s->timer_tag);
1449 s->timer_tag = 0;
1450 }
1451
1452 if (ms == 1000) {
1453 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1454 } else {
1455 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1456 }
1457}
1458
9005b2a7
PB		 1459/* Called with chr_write_lock held. */
1460static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1461{
1462 PtyCharDriver *s = chr->opaque;
1463 GPollFD pfd;
c1f24489 1464 int rc;
9894dc0c 1465 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1466
9894dc0c 1467 pfd.fd = fioc->fd;
1bb7fe72
PB		 1468 pfd.events = G_IO_OUT;
1469 pfd.revents = 0;
c1f24489
PB		 1470 do {
1471 rc = g_poll(&pfd, 1, 0);
1472 } while (rc == -1 && errno == EINTR);
1473 assert(rc >= 0);
1474
1bb7fe72
PB		 1475 if (pfd.revents & G_IO_HUP) {
1476 pty_chr_state(chr, 0);
1477 } else {
1478 pty_chr_state(chr, 1);
1479 }
1480}
1481
e92aa36a 1482static void pty_chr_update_read_handler(CharDriverState *chr,
a4afa548 1483 GMainContext *context)
9005b2a7
PB		 1484{
1485 qemu_mutex_lock(&chr->chr_write_lock);
1486 pty_chr_update_read_handler_locked(chr);
1487 qemu_mutex_unlock(&chr->chr_write_lock);
1488}
1489
1490/* Called with chr_write_lock held. */
6f97dba0
AL		 1491static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1492{
1493 PtyCharDriver *s = chr->opaque;
1494
1495 if (!s->connected) {
1496 /* guest sends data, check for (re-)connect */
9005b2a7 1497 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1498 if (!s->connected) {
1499 return 0;
1500 }
6f97dba0 1501 }
9894dc0c 1502 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1503}
1504
e6a87ed8
AL		 1505static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1506{
1507 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1508 if (!s->connected) {
1509 return NULL;
1510 }
9894dc0c 1511 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1512}
1513
6f97dba0
AL		 1514static int pty_chr_read_poll(void *opaque)
1515{
1516 CharDriverState *chr = opaque;
1517 PtyCharDriver *s = chr->opaque;
1518
909cda12 1519 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1520 return s->read_bytes;
1521}
1522
9894dc0c 1523static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1524{
1525 CharDriverState *chr = opaque;
1526 PtyCharDriver *s = chr->opaque;
9894dc0c 1527 gsize len;
9bd7854e 1528 uint8_t buf[READ_BUF_LEN];
9894dc0c 1529 ssize_t ret;
6f97dba0
AL		 1530
1531 len = sizeof(buf);
1532 if (len > s->read_bytes)
1533 len = s->read_bytes;
cdbf6e16
PB		 1534 if (len == 0) {
1535 return TRUE;
1536 }
9894dc0c
DB		 1537 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1538 if (ret <= 0) {
6f97dba0 1539 pty_chr_state(chr, 0);
093d3a20
AL		 1540 return FALSE;
1541 } else {
6f97dba0 1542 pty_chr_state(chr, 1);
9894dc0c 1543 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1544 }
093d3a20 1545 return TRUE;
6f97dba0
AL		 1546}
1547
7b3621f4
PB		 1548static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1549{
1550 CharDriverState *chr = opaque;
1551 PtyCharDriver *s = chr->opaque;
1552
1553 s->open_tag = 0;
1554 qemu_chr_be_generic_open(chr);
1555 return FALSE;
1556}
1557
9005b2a7 1558/* Called with chr_write_lock held. */
6f97dba0
AL		 1559static void pty_chr_state(CharDriverState *chr, int connected)
1560{
1561 PtyCharDriver *s = chr->opaque;
1562
1563 if (!connected) {
7b3621f4
PB		 1564 if (s->open_tag) {
1565 g_source_remove(s->open_tag);
1566 s->open_tag = 0;
1567 }
26da70c7 1568 remove_fd_in_watch(chr);
6f97dba0 1569 s->connected = 0;
6f97dba0
AL		 1570 /* (re-)connect poll interval for idle guests: once per second.
1571 * We check more frequently in case the guests sends data to
1572 * the virtual device linked to our pty. */
8aa33caf 1573 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1574 } else {
85a67692
PB		 1575 if (s->timer_tag) {
1576 g_source_remove(s->timer_tag);
1577 s->timer_tag = 0;
1578 }
1579 if (!s->connected) {
7b3621f4 1580 g_assert(s->open_tag == 0);
85a67692 1581 s->connected = 1;
7b3621f4 1582 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1583 }
1584 if (!chr->fd_in_tag) {
9894dc0c
DB		 1585 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1586 pty_chr_read_poll,
e92aa36a
ZC		 1587 pty_chr_read,
1588 chr, NULL);
85a67692 1589 }
6f97dba0
AL		 1590 }
1591}
1592
72ac8762 1593static void pty_chr_free(struct CharDriverState *chr)
6f97dba0
AL		 1594{
1595 PtyCharDriver *s = chr->opaque;
1596
7b3621f4
PB		 1597 qemu_mutex_lock(&chr->chr_write_lock);
1598 pty_chr_state(chr, 0);
9894dc0c 1599 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1600 if (s->timer_tag) {
1601 g_source_remove(s->timer_tag);
910b6368 1602 s->timer_tag = 0;
8aa33caf 1603 }
7b3621f4 1604 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1605 g_free(s);
a425d23f 1606 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1607}
1608
e68c5958 1609static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1610 ChardevBackend *backend,
1611 ChardevReturn *ret,
1612 Error **errp)
6f97dba0
AL		 1613{
1614 CharDriverState *chr;
1615 PtyCharDriver *s;
e68c5958 1616 int master_fd, slave_fd;
6f97dba0 1617 char pty_name[PATH_MAX];
32bafa8f 1618 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1619
4efeabbb
MT		 1620 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1621 if (master_fd < 0) {
c2e75a43 1622 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1623 return NULL;
6f97dba0
AL		 1624 }
1625
837a183f 1626 close(slave_fd);
fac6688a 1627 qemu_set_nonblock(master_fd);
6f97dba0 1628
d0d7708b
DB		 1629 chr = qemu_chr_alloc(common, errp);
1630 if (!chr) {
1631 close(master_fd);
1632 return NULL;
1633 }
a4e26048 1634
4efeabbb
MT		 1635 chr->filename = g_strdup_printf("pty:%s", pty_name);
1636 ret->pty = g_strdup(pty_name);
e68c5958 1637 ret->has_pty = true;
58650218 1638
e68c5958 1639 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1640 pty_name, id);
6f97dba0 1641
2d528d45 1642 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1643 chr->opaque = s;
1644 chr->chr_write = pty_chr_write;
1645 chr->chr_update_read_handler = pty_chr_update_read_handler;
72ac8762 1646 chr->chr_free = pty_chr_free;
e6a87ed8 1647 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1648 chr->explicit_be_open = true;
6f97dba0 1649
9894dc0c 1650 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1651 s->timer_tag = 0;
6f97dba0 1652
1f51470d 1653 return chr;
6f97dba0
AL		 1654}
1655
1656static void tty_serial_init(int fd, int speed,
1657 int parity, int data_bits, int stop_bits)
1658{
1659 struct termios tty;
1660 speed_t spd;
1661
1662#if 0
1663 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1664 speed, parity, data_bits, stop_bits);
1665#endif
1666 tcgetattr (fd, &tty);
1667
45eea13b
SW		 1668#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1669 speed = speed * 10 / 11;
1670 do {
1671 check_speed(50);
1672 check_speed(75);
1673 check_speed(110);
1674 check_speed(134);
1675 check_speed(150);
1676 check_speed(200);
1677 check_speed(300);
1678 check_speed(600);
1679 check_speed(1200);
1680 check_speed(1800);
1681 check_speed(2400);
1682 check_speed(4800);
1683 check_speed(9600);
1684 check_speed(19200);
1685 check_speed(38400);
1686 /* Non-Posix values follow. They may be unsupported on some systems. */
1687 check_speed(57600);
1688 check_speed(115200);
1689#ifdef B230400
1690 check_speed(230400);
1691#endif
1692#ifdef B460800
1693 check_speed(460800);
1694#endif
1695#ifdef B500000
1696 check_speed(500000);
1697#endif
1698#ifdef B576000
1699 check_speed(576000);
1700#endif
1701#ifdef B921600
1702 check_speed(921600);
1703#endif
1704#ifdef B1000000
1705 check_speed(1000000);
1706#endif
1707#ifdef B1152000
1708 check_speed(1152000);
1709#endif
1710#ifdef B1500000
1711 check_speed(1500000);
1712#endif
1713#ifdef B2000000
1714 check_speed(2000000);
1715#endif
1716#ifdef B2500000
1717 check_speed(2500000);
1718#endif
1719#ifdef B3000000
1720 check_speed(3000000);
1721#endif
1722#ifdef B3500000
1723 check_speed(3500000);
1724#endif
1725#ifdef B4000000
1726 check_speed(4000000);
1727#endif
6f97dba0 1728 spd = B115200;
45eea13b 1729 } while (0);
6f97dba0
AL		 1730
1731 cfsetispeed(&tty, spd);
1732 cfsetospeed(&tty, spd);
1733
1734 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1735 |INLCR|IGNCR|ICRNL|IXON);
1736 tty.c_oflag |= OPOST;
1737 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1738 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1739 switch(data_bits) {
1740 default:
1741 case 8:
1742 tty.c_cflag |= CS8;
1743 break;
1744 case 7:
1745 tty.c_cflag |= CS7;
1746 break;
1747 case 6:
1748 tty.c_cflag |= CS6;
1749 break;
1750 case 5:
1751 tty.c_cflag |= CS5;
1752 break;
1753 }
1754 switch(parity) {
1755 default:
1756 case 'N':
1757 break;
1758 case 'E':
1759 tty.c_cflag |= PARENB;
1760 break;
1761 case 'O':
1762 tty.c_cflag |= PARENB | PARODD;
1763 break;
1764 }
1765 if (stop_bits == 2)
1766 tty.c_cflag |= CSTOPB;
1767
1768 tcsetattr (fd, TCSANOW, &tty);
1769}
1770
1771static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1772{
1773 FDCharDriver *s = chr->opaque;
9894dc0c 1774 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1775
1776 switch(cmd) {
1777 case CHR_IOCTL_SERIAL_SET_PARAMS:
1778 {
1779 QEMUSerialSetParams *ssp = arg;
9894dc0c 1780 tty_serial_init(fioc->fd,
a29753f8 1781 ssp->speed, ssp->parity,
6f97dba0
AL		 1782 ssp->data_bits, ssp->stop_bits);
1783 }
1784 break;
1785 case CHR_IOCTL_SERIAL_SET_BREAK:
1786 {
1787 int enable = *(int *)arg;
a29753f8 1788 if (enable) {
9894dc0c 1789 tcsendbreak(fioc->fd, 1);
a29753f8 1790 }
6f97dba0
AL		 1791 }
1792 break;
1793 case CHR_IOCTL_SERIAL_GET_TIOCM:
1794 {
1795 int sarg = 0;
1796 int *targ = (int *)arg;
9894dc0c 1797 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1798 *targ = 0;
b4abdfa4 1799 if (sarg & TIOCM_CTS)
6f97dba0 1800 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1801 if (sarg & TIOCM_CAR)
6f97dba0 1802 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1803 if (sarg & TIOCM_DSR)
6f97dba0 1804 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1805 if (sarg & TIOCM_RI)
6f97dba0 1806 *targ |= CHR_TIOCM_RI;
b4abdfa4 1807 if (sarg & TIOCM_DTR)
6f97dba0 1808 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1809 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1810 *targ |= CHR_TIOCM_RTS;
1811 }
1812 break;
1813 case CHR_IOCTL_SERIAL_SET_TIOCM:
1814 {
1815 int sarg = *(int *)arg;
1816 int targ = 0;
9894dc0c 1817 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1818 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1819 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1820 if (sarg & CHR_TIOCM_CTS)
1821 targ |= TIOCM_CTS;
1822 if (sarg & CHR_TIOCM_CAR)
1823 targ |= TIOCM_CAR;
1824 if (sarg & CHR_TIOCM_DSR)
1825 targ |= TIOCM_DSR;
1826 if (sarg & CHR_TIOCM_RI)
1827 targ |= TIOCM_RI;
1828 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1829 targ |= TIOCM_DTR;
b4abdfa4 1830 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1831 targ |= TIOCM_RTS;
9894dc0c 1832 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1833 }
1834 break;
1835 default:
1836 return -ENOTSUP;
1837 }
1838 return 0;
1839}
1840
72ac8762 1841static void qemu_chr_free_tty(CharDriverState *chr)
4266a134 1842{
72ac8762 1843 fd_chr_free(chr);
4266a134
DA		 1844}
1845
d0d7708b
DB		 1846static CharDriverState *qemu_chr_open_tty_fd(int fd,
1847 ChardevCommon *backend,
1848 Error **errp)
d59044ef
GH		 1849{
1850 CharDriverState *chr;
1851
1852 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1853 chr = qemu_chr_open_fd(fd, fd, backend, errp);
71200fb9
LM		 1854 if (!chr) {
1855 return NULL;
1856 }
d59044ef 1857 chr->chr_ioctl = tty_serial_ioctl;
72ac8762 1858 chr->chr_free = qemu_chr_free_tty;
d59044ef
GH		 1859 return chr;
1860}
6f97dba0
AL		 1861#endif /* __linux__ || __sun__ */
1862
1863#if defined(__linux__)
e551498e
GH		 1864
1865#define HAVE_CHARDEV_PARPORT 1
1866
6f97dba0
AL		 1867typedef struct {
1868 int fd;
1869 int mode;
1870} ParallelCharDriver;
1871
1872static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1873{
1874 if (s->mode != mode) {
1875 int m = mode;
1876 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1877 return 0;
1878 s->mode = mode;
1879 }
1880 return 1;
1881}
1882
1883static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1884{
1885 ParallelCharDriver *drv = chr->opaque;
1886 int fd = drv->fd;
1887 uint8_t b;
1888
1889 switch(cmd) {
1890 case CHR_IOCTL_PP_READ_DATA:
1891 if (ioctl(fd, PPRDATA, &b) < 0)
1892 return -ENOTSUP;
1893 *(uint8_t *)arg = b;
1894 break;
1895 case CHR_IOCTL_PP_WRITE_DATA:
1896 b = *(uint8_t *)arg;
1897 if (ioctl(fd, PPWDATA, &b) < 0)
1898 return -ENOTSUP;
1899 break;
1900 case CHR_IOCTL_PP_READ_CONTROL:
1901 if (ioctl(fd, PPRCONTROL, &b) < 0)
1902 return -ENOTSUP;
1903 /* Linux gives only the lowest bits, and no way to know data
1904 direction! For better compatibility set the fixed upper
1905 bits. */
1906 *(uint8_t *)arg = b | 0xc0;
1907 break;
1908 case CHR_IOCTL_PP_WRITE_CONTROL:
1909 b = *(uint8_t *)arg;
1910 if (ioctl(fd, PPWCONTROL, &b) < 0)
1911 return -ENOTSUP;
1912 break;
1913 case CHR_IOCTL_PP_READ_STATUS:
1914 if (ioctl(fd, PPRSTATUS, &b) < 0)
1915 return -ENOTSUP;
1916 *(uint8_t *)arg = b;
1917 break;
1918 case CHR_IOCTL_PP_DATA_DIR:
1919 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1920 return -ENOTSUP;
1921 break;
1922 case CHR_IOCTL_PP_EPP_READ_ADDR:
1923 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1924 struct ParallelIOArg *parg = arg;
1925 int n = read(fd, parg->buffer, parg->count);
1926 if (n != parg->count) {
1927 return -EIO;
1928 }
1929 }
1930 break;
1931 case CHR_IOCTL_PP_EPP_READ:
1932 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1933 struct ParallelIOArg *parg = arg;
1934 int n = read(fd, parg->buffer, parg->count);
1935 if (n != parg->count) {
1936 return -EIO;
1937 }
1938 }
1939 break;
1940 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1941 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1942 struct ParallelIOArg *parg = arg;
1943 int n = write(fd, parg->buffer, parg->count);
1944 if (n != parg->count) {
1945 return -EIO;
1946 }
1947 }
1948 break;
1949 case CHR_IOCTL_PP_EPP_WRITE:
1950 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1951 struct ParallelIOArg *parg = arg;
1952 int n = write(fd, parg->buffer, parg->count);
1953 if (n != parg->count) {
1954 return -EIO;
1955 }
1956 }
1957 break;
1958 default:
1959 return -ENOTSUP;
1960 }
1961 return 0;
1962}
1963
72ac8762 1964static void pp_free(CharDriverState *chr)
6f97dba0
AL		 1965{
1966 ParallelCharDriver *drv = chr->opaque;
1967 int fd = drv->fd;
1968
1969 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1970 ioctl(fd, PPRELEASE);
1971 close(fd);
7267c094 1972 g_free(drv);
a425d23f 1973 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1974}
1975
d0d7708b
DB		 1976static CharDriverState *qemu_chr_open_pp_fd(int fd,
1977 ChardevCommon *backend,
1978 Error **errp)
6f97dba0
AL		 1979{
1980 CharDriverState *chr;
1981 ParallelCharDriver *drv;
6f97dba0
AL		 1982
1983 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1984 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1985 close(fd);
1f51470d 1986 return NULL;
6f97dba0
AL		 1987 }
1988
d0d7708b
DB		 1989 chr = qemu_chr_alloc(backend, errp);
1990 if (!chr) {
1991 return NULL;
1992 }
27ef9cb0
PB		 1993
1994 drv = g_new0(ParallelCharDriver, 1);
1995 chr->opaque = drv;
6f97dba0
AL		 1996 chr->chr_write = null_chr_write;
1997 chr->chr_ioctl = pp_ioctl;
72ac8762 1998 chr->chr_free = pp_free;
27ef9cb0
PB		 1999
2000 drv->fd = fd;
2001 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 2002
1f51470d 2003 return chr;
6f97dba0
AL		 2004}
2005#endif /* __linux__ */
2006
a167ba50 2007#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 2008
2009#define HAVE_CHARDEV_PARPORT 1
2010
6972f935
BS		 2011static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
2012{
e0efb993 2013 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 2014 uint8_t b;
2015
2016 switch(cmd) {
2017 case CHR_IOCTL_PP_READ_DATA:
2018 if (ioctl(fd, PPIGDATA, &b) < 0)
2019 return -ENOTSUP;
2020 *(uint8_t *)arg = b;
2021 break;
2022 case CHR_IOCTL_PP_WRITE_DATA:
2023 b = *(uint8_t *)arg;
2024 if (ioctl(fd, PPISDATA, &b) < 0)
2025 return -ENOTSUP;
2026 break;
2027 case CHR_IOCTL_PP_READ_CONTROL:
2028 if (ioctl(fd, PPIGCTRL, &b) < 0)
2029 return -ENOTSUP;
2030 *(uint8_t *)arg = b;
2031 break;
2032 case CHR_IOCTL_PP_WRITE_CONTROL:
2033 b = *(uint8_t *)arg;
2034 if (ioctl(fd, PPISCTRL, &b) < 0)
2035 return -ENOTSUP;
2036 break;
2037 case CHR_IOCTL_PP_READ_STATUS:
2038 if (ioctl(fd, PPIGSTATUS, &b) < 0)
2039 return -ENOTSUP;
2040 *(uint8_t *)arg = b;
2041 break;
2042 default:
2043 return -ENOTSUP;
2044 }
2045 return 0;
2046}
2047
d0d7708b 2048static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 2049 ChardevCommon *backend,
d0d7708b 2050 Error **errp)
6972f935
BS		 2051{
2052 CharDriverState *chr;
6972f935 2053
0850d49c 2054 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 2055 if (!chr) {
2056 return NULL;
2057 }
e0efb993 2058 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 2059 chr->chr_write = null_chr_write;
2060 chr->chr_ioctl = pp_ioctl;
bd5c51ee 2061 chr->explicit_be_open = true;
1f51470d 2062 return chr;
6972f935
BS		 2063}
2064#endif
2065
6f97dba0
AL		 2066#else /* _WIN32 */
2067
d809ab95
PB		 2068#define HAVE_CHARDEV_SERIAL 1
2069
6f97dba0
AL		 2070typedef struct {
2071 int max_size;
2072 HANDLE hcom, hrecv, hsend;
9005b2a7 2073 OVERLAPPED orecv;
6f97dba0
AL		 2074 BOOL fpipe;
2075 DWORD len;
9005b2a7
PB		 2076
2077 /* Protected by the CharDriverState chr_write_lock. */
2078 OVERLAPPED osend;
6f97dba0
AL		 2079} WinCharState;
2080
db418a0a
FC		 2081typedef struct {
2082 HANDLE hStdIn;
2083 HANDLE hInputReadyEvent;
2084 HANDLE hInputDoneEvent;
2085 HANDLE hInputThread;
2086 uint8_t win_stdio_buf;
2087} WinStdioCharState;
2088
6f97dba0
AL		 2089#define NSENDBUF 2048
2090#define NRECVBUF 2048
2091#define MAXCONNECT 1
2092#define NTIMEOUT 5000
2093
2094static int win_chr_poll(void *opaque);
2095static int win_chr_pipe_poll(void *opaque);
2096
72ac8762 2097static void win_chr_free(CharDriverState *chr)
6f97dba0
AL		 2098{
2099 WinCharState *s = chr->opaque;
2100
2101 if (s->hsend) {
2102 CloseHandle(s->hsend);
2103 s->hsend = NULL;
2104 }
2105 if (s->hrecv) {
2106 CloseHandle(s->hrecv);
2107 s->hrecv = NULL;
2108 }
2109 if (s->hcom) {
2110 CloseHandle(s->hcom);
2111 s->hcom = NULL;
2112 }
2113 if (s->fpipe)
2114 qemu_del_polling_cb(win_chr_pipe_poll, chr);
2115 else
2116 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 2117
a425d23f 2118 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2119}
2120
6511d396 2121static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 2122{
2123 WinCharState *s = chr->opaque;
2124 COMMCONFIG comcfg;
2125 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
2126 COMSTAT comstat;
2127 DWORD size;
2128 DWORD err;
2129
2130 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2131 if (!s->hsend) {
6511d396 2132 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2133 goto fail;
2134 }
2135 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2136 if (!s->hrecv) {
6511d396 2137 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2138 goto fail;
2139 }
2140
2141 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
2142 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
2143 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 2144 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 2145 s->hcom = NULL;
2146 goto fail;
2147 }
2148
2149 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 2150 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 2151 goto fail;
2152 }
2153
2154 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
2155 size = sizeof(COMMCONFIG);
2156 GetDefaultCommConfig(filename, &comcfg, &size);
2157 comcfg.dcb.DCBlength = sizeof(DCB);
2158 CommConfigDialog(filename, NULL, &comcfg);
2159
2160 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 2161 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 2162 goto fail;
2163 }
2164
2165 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 2166 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 2167 goto fail;
2168 }
2169
2170 cto.ReadIntervalTimeout = MAXDWORD;
2171 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 2172 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 2173 goto fail;
2174 }
2175
2176 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2177 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2178 goto fail;
2179 }
2180 qemu_add_polling_cb(win_chr_poll, chr);
2181 return 0;
2182
2183 fail:
72ac8762 2184 win_chr_free(chr);
6f97dba0
AL		 2185 return -1;
2186}
2187
9005b2a7 2188/* Called with chr_write_lock held. */
6f97dba0
AL		 2189static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2190{
2191 WinCharState *s = chr->opaque;
2192 DWORD len, ret, size, err;
2193
2194 len = len1;
2195 ZeroMemory(&s->osend, sizeof(s->osend));
2196 s->osend.hEvent = s->hsend;
2197 while (len > 0) {
2198 if (s->hsend)
2199 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2200 else
2201 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2202 if (!ret) {
2203 err = GetLastError();
2204 if (err == ERROR_IO_PENDING) {
2205 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2206 if (ret) {
2207 buf += size;
2208 len -= size;
2209 } else {
2210 break;
2211 }
2212 } else {
2213 break;
2214 }
2215 } else {
2216 buf += size;
2217 len -= size;
2218 }
2219 }
2220 return len1 - len;
2221}
2222
2223static int win_chr_read_poll(CharDriverState *chr)
2224{
2225 WinCharState *s = chr->opaque;
2226
909cda12 2227 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2228 return s->max_size;
2229}
2230
2231static void win_chr_readfile(CharDriverState *chr)
2232{
2233 WinCharState *s = chr->opaque;
2234 int ret, err;
9bd7854e 2235 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2236 DWORD size;
2237
2238 ZeroMemory(&s->orecv, sizeof(s->orecv));
2239 s->orecv.hEvent = s->hrecv;
2240 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2241 if (!ret) {
2242 err = GetLastError();
2243 if (err == ERROR_IO_PENDING) {
2244 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2245 }
2246 }
2247
2248 if (size > 0) {
fa5efccb 2249 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2250 }
2251}
2252
2253static void win_chr_read(CharDriverState *chr)
2254{
2255 WinCharState *s = chr->opaque;
2256
2257 if (s->len > s->max_size)
2258 s->len = s->max_size;
2259 if (s->len == 0)
2260 return;
2261
2262 win_chr_readfile(chr);
2263}
2264
2265static int win_chr_poll(void *opaque)
2266{
2267 CharDriverState *chr = opaque;
2268 WinCharState *s = chr->opaque;
2269 COMSTAT status;
2270 DWORD comerr;
2271
2272 ClearCommError(s->hcom, &comerr, &status);
2273 if (status.cbInQue > 0) {
2274 s->len = status.cbInQue;
2275 win_chr_read_poll(chr);
2276 win_chr_read(chr);
2277 return 1;
2278 }
2279 return 0;
2280}
2281
6511d396 2282static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2283 ChardevCommon *backend,
6511d396 2284 Error **errp)
6f97dba0
AL		 2285{
2286 CharDriverState *chr;
2287 WinCharState *s;
2288
d0d7708b
DB		 2289 chr = qemu_chr_alloc(backend, errp);
2290 if (!chr) {
2291 return NULL;
2292 }
2d528d45 2293 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2294 chr->opaque = s;
2295 chr->chr_write = win_chr_write;
72ac8762 2296 chr->chr_free = win_chr_free;
6f97dba0 2297
6511d396 2298 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2299 g_free(s);
d0d7708b 2300 qemu_chr_free_common(chr);
1f51470d 2301 return NULL;
6f97dba0 2302 }
1f51470d 2303 return chr;
6f97dba0
AL		 2304}
2305
2306static int win_chr_pipe_poll(void *opaque)
2307{
2308 CharDriverState *chr = opaque;
2309 WinCharState *s = chr->opaque;
2310 DWORD size;
2311
2312 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2313 if (size > 0) {
2314 s->len = size;
2315 win_chr_read_poll(chr);
2316 win_chr_read(chr);
2317 return 1;
2318 }
2319 return 0;
2320}
2321
20cbe7a2
PB		 2322static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2323 Error **errp)
6f97dba0
AL		 2324{
2325 WinCharState *s = chr->opaque;
2326 OVERLAPPED ov;
2327 int ret;
2328 DWORD size;
0ff0fad2 2329 char *openname;
6f97dba0
AL		 2330
2331 s->fpipe = TRUE;
2332
2333 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2334 if (!s->hsend) {
20cbe7a2 2335 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2336 goto fail;
2337 }
2338 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2339 if (!s->hrecv) {
20cbe7a2 2340 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2341 goto fail;
2342 }
2343
0ff0fad2 2344 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2345 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2346 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2347 PIPE_WAIT,
2348 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2349 g_free(openname);
6f97dba0 2350 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2351 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2352 s->hcom = NULL;
2353 goto fail;
2354 }
2355
2356 ZeroMemory(&ov, sizeof(ov));
2357 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2358 ret = ConnectNamedPipe(s->hcom, &ov);
2359 if (ret) {
20cbe7a2 2360 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2361 goto fail;
2362 }
2363
2364 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2365 if (!ret) {
20cbe7a2 2366 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2367 if (ov.hEvent) {
2368 CloseHandle(ov.hEvent);
2369 ov.hEvent = NULL;
2370 }
2371 goto fail;
2372 }
2373
2374 if (ov.hEvent) {
2375 CloseHandle(ov.hEvent);
2376 ov.hEvent = NULL;
2377 }
2378 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2379 return 0;
2380
2381 fail:
72ac8762 2382 win_chr_free(chr);
6f97dba0
AL		 2383 return -1;
2384}
2385
2386
20cbe7a2
PB		 2387static CharDriverState *qemu_chr_open_pipe(const char *id,
2388 ChardevBackend *backend,
2389 ChardevReturn *ret,
2390 Error **errp)
6f97dba0 2391{
32bafa8f 2392 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2393 const char *filename = opts->device;
6f97dba0
AL		 2394 CharDriverState *chr;
2395 WinCharState *s;
f194a1ae 2396 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2397
d0d7708b
DB		 2398 chr = qemu_chr_alloc(common, errp);
2399 if (!chr) {
2400 return NULL;
2401 }
2d528d45 2402 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2403 chr->opaque = s;
2404 chr->chr_write = win_chr_write;
72ac8762 2405 chr->chr_free = win_chr_free;
6f97dba0 2406
20cbe7a2 2407 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2408 g_free(s);
d0d7708b 2409 qemu_chr_free_common(chr);
1f51470d 2410 return NULL;
6f97dba0 2411 }
1f51470d 2412 return chr;
6f97dba0
AL		 2413}
2414
d0d7708b
DB		 2415static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2416 ChardevCommon *backend,
2417 Error **errp)
6f97dba0
AL		 2418{
2419 CharDriverState *chr;
2420 WinCharState *s;
2421
d0d7708b
DB		 2422 chr = qemu_chr_alloc(backend, errp);
2423 if (!chr) {
2424 return NULL;
2425 }
2d528d45 2426 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2427 s->hcom = fd_out;
2428 chr->opaque = s;
2429 chr->chr_write = win_chr_write;
1f51470d 2430 return chr;
6f97dba0
AL		 2431}
2432
122e5ed4
PB		 2433static CharDriverState *qemu_chr_open_win_con(const char *id,
2434 ChardevBackend *backend,
2435 ChardevReturn *ret,
2436 Error **errp)
6f97dba0 2437{
32bafa8f 2438 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2439 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2440 common, errp);
6f97dba0
AL		 2441}
2442
db418a0a
FC		 2443static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2444{
2445 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2446 DWORD dwSize;
2447 int len1;
2448
2449 len1 = len;
2450
2451 while (len1 > 0) {
2452 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2453 break;
2454 }
2455 buf += dwSize;
2456 len1 -= dwSize;
2457 }
2458
2459 return len - len1;
2460}
2461
2462static void win_stdio_wait_func(void *opaque)
2463{
2464 CharDriverState *chr = opaque;
2465 WinStdioCharState *stdio = chr->opaque;
2466 INPUT_RECORD buf[4];
2467 int ret;
2468 DWORD dwSize;
2469 int i;
2470
dff7424d 2471 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2472
2473 if (!ret) {
2474 /* Avoid error storm */
2475 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2476 return;
2477 }
2478
2479 for (i = 0; i < dwSize; i++) {
2480 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2481
2482 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2483 int j;
2484 if (kev->uChar.AsciiChar != 0) {
2485 for (j = 0; j < kev->wRepeatCount; j++) {
2486 if (qemu_chr_be_can_write(chr)) {
2487 uint8_t c = kev->uChar.AsciiChar;
2488 qemu_chr_be_write(chr, &c, 1);
2489 }
2490 }
2491 }
2492 }
2493 }
2494}
2495
2496static DWORD WINAPI win_stdio_thread(LPVOID param)
2497{
2498 CharDriverState *chr = param;
2499 WinStdioCharState *stdio = chr->opaque;
2500 int ret;
2501 DWORD dwSize;
2502
2503 while (1) {
2504
2505 /* Wait for one byte */
2506 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2507
2508 /* Exit in case of error, continue if nothing read */
2509 if (!ret) {
2510 break;
2511 }
2512 if (!dwSize) {
2513 continue;
2514 }
2515
2516 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2517 if (stdio->win_stdio_buf == '\r') {
2518 continue;
2519 }
2520
2521 /* Signal the main thread and wait until the byte was eaten */
2522 if (!SetEvent(stdio->hInputReadyEvent)) {
2523 break;
2524 }
2525 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2526 != WAIT_OBJECT_0) {
2527 break;
2528 }
2529 }
2530
2531 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2532 return 0;
2533}
2534
2535static void win_stdio_thread_wait_func(void *opaque)
2536{
2537 CharDriverState *chr = opaque;
2538 WinStdioCharState *stdio = chr->opaque;
2539
2540 if (qemu_chr_be_can_write(chr)) {
2541 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2542 }
2543
2544 SetEvent(stdio->hInputDoneEvent);
2545}
2546
2547static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2548{
2549 WinStdioCharState *stdio = chr->opaque;
2550 DWORD dwMode = 0;
2551
2552 GetConsoleMode(stdio->hStdIn, &dwMode);
2553
2554 if (echo) {
2555 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2556 } else {
2557 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2558 }
2559}
2560
72ac8762 2561static void win_stdio_free(CharDriverState *chr)
db418a0a
FC		 2562{
2563 WinStdioCharState *stdio = chr->opaque;
2564
2565 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2566 CloseHandle(stdio->hInputReadyEvent);
2567 }
2568 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2569 CloseHandle(stdio->hInputDoneEvent);
2570 }
2571 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2572 TerminateThread(stdio->hInputThread, 0);
2573 }
2574
2575 g_free(chr->opaque);
db418a0a
FC		 2576}
2577
8c84b25d
PB		 2578static CharDriverState *qemu_chr_open_stdio(const char *id,
2579 ChardevBackend *backend,
2580 ChardevReturn *ret,
2581 Error **errp)
db418a0a
FC		 2582{
2583 CharDriverState *chr;
2584 WinStdioCharState *stdio;
2585 DWORD dwMode;
2586 int is_console = 0;
32bafa8f 2587 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2588
d0d7708b
DB		 2589 chr = qemu_chr_alloc(common, errp);
2590 if (!chr) {
2591 return NULL;
2592 }
2d528d45 2593 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2594
2595 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2596 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2597 error_setg(errp, "cannot open stdio: invalid handle");
2598 return NULL;
db418a0a
FC		 2599 }
2600
2601 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2602
2603 chr->opaque = stdio;
2604 chr->chr_write = win_stdio_write;
72ac8762 2605 chr->chr_free = win_stdio_free;
db418a0a 2606
ed7a1540
AL		 2607 if (is_console) {
2608 if (qemu_add_wait_object(stdio->hStdIn,
2609 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2610 error_setg(errp, "qemu_add_wait_object: failed");
2611 goto err1;
ed7a1540
AL		 2612 }
2613 } else {
2614 DWORD dwId;
2615
2616 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2617 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2618 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2619 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2620 error_setg(errp, "cannot create event");
2621 goto err2;
ed7a1540
AL		 2622 }
2623 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2624 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2625 error_setg(errp, "qemu_add_wait_object: failed");
2626 goto err2;
2627 }
2628 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2629 chr, 0, &dwId);
2630
2631 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2632 error_setg(errp, "cannot create stdio thread");
2633 goto err3;
db418a0a
FC		 2634 }
2635 }
2636
2637 dwMode |= ENABLE_LINE_INPUT;
2638
ed7a1540 2639 if (is_console) {
db418a0a
FC		 2640 /* set the terminal in raw mode */
2641 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2642 dwMode |= ENABLE_PROCESSED_INPUT;
2643 }
2644
2645 SetConsoleMode(stdio->hStdIn, dwMode);
2646
2647 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
5345fdb4 2648 qemu_chr_set_echo_win_stdio(chr, false);
db418a0a 2649
1f51470d 2650 return chr;
8c84b25d
PB		 2651
2652err3:
2653 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2654err2:
2655 CloseHandle(stdio->hInputReadyEvent);
2656 CloseHandle(stdio->hInputDoneEvent);
2657err1:
2658 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2659 return NULL;
db418a0a 2660}
6f97dba0
AL		 2661#endif /* !_WIN32 */
2662
2663/***********************************************************/
2664/* UDP Net console */
2665
2666typedef struct {
9894dc0c 2667 QIOChannel *ioc;
9bd7854e 2668 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2669 int bufcnt;
2670 int bufptr;
2671 int max_size;
2672} NetCharDriver;
2673
9005b2a7 2674/* Called with chr_write_lock held. */
6f97dba0
AL		 2675static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2676{
2677 NetCharDriver *s = chr->opaque;
76a9644b 2678
9894dc0c
DB		 2679 return qio_channel_write(
2680 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2681}
2682
2683static int udp_chr_read_poll(void *opaque)
2684{
2685 CharDriverState *chr = opaque;
2686 NetCharDriver *s = chr->opaque;
2687
909cda12 2688 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2689
2690 /* If there were any stray characters in the queue process them
2691 * first
2692 */
2693 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2694 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2695 s->bufptr++;
909cda12 2696 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2697 }
2698 return s->max_size;
2699}
2700
9894dc0c 2701static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2702{
2703 CharDriverState *chr = opaque;
2704 NetCharDriver *s = chr->opaque;
9894dc0c 2705 ssize_t ret;
6f97dba0 2706
cdbf6e16
PB		 2707 if (s->max_size == 0) {
2708 return TRUE;
2709 }
9894dc0c
DB		 2710 ret = qio_channel_read(
2711 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2712 if (ret <= 0) {
26da70c7 2713 remove_fd_in_watch(chr);
76a9644b
AL		 2714 return FALSE;
2715 }
9894dc0c 2716 s->bufcnt = ret;
6f97dba0
AL		 2717
2718 s->bufptr = 0;
2719 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2720 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2721 s->bufptr++;
909cda12 2722 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2723 }
76a9644b
AL		 2724
2725 return TRUE;
6f97dba0
AL		 2726}
2727
e92aa36a 2728static void udp_chr_update_read_handler(CharDriverState *chr,
a4afa548 2729 GMainContext *context)
6f97dba0
AL		 2730{
2731 NetCharDriver *s = chr->opaque;
2732
26da70c7 2733 remove_fd_in_watch(chr);
9894dc0c
DB		 2734 if (s->ioc) {
2735 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2736 udp_chr_read_poll,
e92aa36a
ZC		 2737 udp_chr_read, chr,
2738 context);
6f97dba0
AL		 2739 }
2740}
2741
72ac8762 2742static void udp_chr_free(CharDriverState *chr)
819f56b7
AL		 2743{
2744 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2745
2746 remove_fd_in_watch(chr);
9894dc0c
DB		 2747 if (s->ioc) {
2748 object_unref(OBJECT(s->ioc));
819f56b7 2749 }
7267c094 2750 g_free(s);
a425d23f 2751 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2752}
2753
9894dc0c
DB		 2754static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2755 ChardevCommon *backend,
2756 Error **errp)
6f97dba0
AL		 2757{
2758 CharDriverState *chr = NULL;
2759 NetCharDriver *s = NULL;
6f97dba0 2760
d0d7708b
DB		 2761 chr = qemu_chr_alloc(backend, errp);
2762 if (!chr) {
2763 return NULL;
2764 }
2d528d45 2765 s = g_new0(NetCharDriver, 1);
6f97dba0 2766
9894dc0c 2767 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2768 s->bufcnt = 0;
2769 s->bufptr = 0;
2770 chr->opaque = s;
2771 chr->chr_write = udp_chr_write;
2772 chr->chr_update_read_handler = udp_chr_update_read_handler;
72ac8762 2773 chr->chr_free = udp_chr_free;
bd5c51ee
MR		 2774 /* be isn't opened until we get a connection */
2775 chr->explicit_be_open = true;
1f51470d 2776 return chr;
3ecc059d 2777}
6f97dba0 2778
6f97dba0
AL		 2779/***********************************************************/
2780/* TCP Net console */
2781
2782typedef struct {
a8fb5427
DB		 2783 QIOChannel *ioc; /* Client I/O channel */
2784 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2785 QIOChannelSocket *listen_ioc;
7ba9addc 2786 guint listen_tag;
a8fb5427 2787 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2788 int connected;
2789 int max_size;
2790 int do_telnetopt;
2791 int do_nodelay;
2792 int is_unix;
c76bf6bb 2793 int *read_msgfds;
9894dc0c 2794 size_t read_msgfds_num;
d39aac7a 2795 int *write_msgfds;
9894dc0c 2796 size_t write_msgfds_num;
cfb429cb
CM		 2797
2798 SocketAddress *addr;
2799 bool is_listen;
2800 bool is_telnet;
5dd1f02b
CM		 2801
2802 guint reconnect_timer;
2803 int64_t reconnect_time;
5008e5b7 2804 bool connect_err_reported;
6f97dba0
AL		 2805} TCPCharDriver;
2806
5dd1f02b
CM		 2807static gboolean socket_reconnect_timeout(gpointer opaque);
2808
2809static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2810{
2811 TCPCharDriver *s = chr->opaque;
2812 assert(s->connected == 0);
2813 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2814 socket_reconnect_timeout, chr);
2815}
2816
5008e5b7
CM		 2817static void check_report_connect_error(CharDriverState *chr,
2818 Error *err)
2819{
2820 TCPCharDriver *s = chr->opaque;
2821
2822 if (!s->connect_err_reported) {
2823 error_report("Unable to connect character device %s: %s",
2824 chr->label, error_get_pretty(err));
2825 s->connect_err_reported = true;
2826 }
2827 qemu_chr_socket_restart_timer(chr);
2828}
2829
9894dc0c
DB		 2830static gboolean tcp_chr_accept(QIOChannel *chan,
2831 GIOCondition cond,
2832 void *opaque);
d39aac7a 2833
9005b2a7 2834/* Called with chr_write_lock held. */
6f97dba0
AL		 2835static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2836{
2837 TCPCharDriver *s = chr->opaque;
2838 if (s->connected) {
9894dc0c
DB		 2839 int ret = io_channel_send_full(s->ioc, buf, len,
2840 s->write_msgfds,
2841 s->write_msgfds_num);
2842
2843 /* free the written msgfds, no matter what */
2844 if (s->write_msgfds_num) {
2845 g_free(s->write_msgfds);
2846 s->write_msgfds = 0;
2847 s->write_msgfds_num = 0;
d39aac7a 2848 }
9894dc0c
DB		 2849
2850 return ret;
455aa1e0 2851 } else {
6db0fdce 2852 /* XXX: indicate an error ? */
455aa1e0 2853 return len;
6f97dba0
AL		 2854 }
2855}
2856
2857static int tcp_chr_read_poll(void *opaque)
2858{
2859 CharDriverState *chr = opaque;
2860 TCPCharDriver *s = chr->opaque;
2861 if (!s->connected)
2862 return 0;
909cda12 2863 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2864 return s->max_size;
2865}
2866
2867#define IAC 255
2868#define IAC_BREAK 243
2869static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2870 TCPCharDriver *s,
2871 uint8_t *buf, int *size)
2872{
2873 /* Handle any telnet client's basic IAC options to satisfy char by
2874 * char mode with no echo. All IAC options will be removed from
2875 * the buf and the do_telnetopt variable will be used to track the
2876 * state of the width of the IAC information.
2877 *
2878 * IAC commands come in sets of 3 bytes with the exception of the
2879 * "IAC BREAK" command and the double IAC.
2880 */
2881
2882 int i;
2883 int j = 0;
2884
2885 for (i = 0; i < *size; i++) {
2886 if (s->do_telnetopt > 1) {
2887 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2888 /* Double IAC means send an IAC */
2889 if (j != i)
2890 buf[j] = buf[i];
2891 j++;
2892 s->do_telnetopt = 1;
2893 } else {
2894 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2895 /* Handle IAC break commands by sending a serial break */
a425d23f 2896 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2897 s->do_telnetopt++;
2898 }
2899 s->do_telnetopt++;
2900 }
2901 if (s->do_telnetopt >= 4) {
2902 s->do_telnetopt = 1;
2903 }
2904 } else {
2905 if ((unsigned char)buf[i] == IAC) {
2906 s->do_telnetopt = 2;
2907 } else {
2908 if (j != i)
2909 buf[j] = buf[i];
2910 j++;
2911 }
2912 }
2913 }
2914 *size = j;
2915}
2916
c76bf6bb 2917static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2918{
2919 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2920 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2921
c4095726
MT		 2922 assert(num <= TCP_MAX_FDS);
2923
c76bf6bb 2924 if (to_copy) {
d2fc39b4
SH		 2925 int i;
2926
c76bf6bb
NN		 2927 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2928
d2fc39b4
SH		 2929 /* Close unused fds */
2930 for (i = to_copy; i < s->read_msgfds_num; i++) {
2931 close(s->read_msgfds[i]);
2932 }
2933
c76bf6bb
NN		 2934 g_free(s->read_msgfds);
2935 s->read_msgfds = 0;
2936 s->read_msgfds_num = 0;
2937 }
2938
2939 return to_copy;
7d174059
MM		 2940}
2941
d39aac7a
NN		 2942static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2943{
2944 TCPCharDriver *s = chr->opaque;
2945
2946 /* clear old pending fd array */
ef1e1e07 2947 g_free(s->write_msgfds);
869a58af 2948 s->write_msgfds = NULL;
5b498459 2949 s->write_msgfds_num = 0;
d39aac7a 2950
5c7eaabf
MAL		 2951 if (!s->connected ||
2952 !qio_channel_has_feature(s->ioc,
2953 QIO_CHANNEL_FEATURE_FD_PASS)) {
2954 return -1;
2955 }
2956
d39aac7a 2957 if (num) {
2d528d45 2958 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2959 memcpy(s->write_msgfds, fds, num * sizeof(int));
2960 }
2961
2962 s->write_msgfds_num = num;
2963
2964 return 0;
2965}
2966
9894dc0c 2967static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2968{
2969 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2970 struct iovec iov = { .iov_base = buf, .iov_len = len };
2971 int ret;
2972 size_t i;
2973 int *msgfds = NULL;
2974 size_t msgfds_num = 0;
2975
2976 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2977 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2978 &msgfds, &msgfds_num,
2979 NULL);
2980 } else {
2981 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2982 NULL, NULL,
2983 NULL);
2984 }
7d174059 2985
b6572b4f
MAL		 2986 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2987 errno = EAGAIN;
2988 ret = -1;
2989 } else if (ret == -1) {
2990 errno = EIO;
2991 }
2992
9894dc0c 2993 if (msgfds_num) {
c76bf6bb
NN		 2994 /* close and clean read_msgfds */
2995 for (i = 0; i < s->read_msgfds_num; i++) {
2996 close(s->read_msgfds[i]);
2997 }
9b938c72 2998
c76bf6bb
NN		 2999 if (s->read_msgfds_num) {
3000 g_free(s->read_msgfds);
3001 }
3002
9894dc0c
DB		 3003 s->read_msgfds = msgfds;
3004 s->read_msgfds_num = msgfds_num;
7d174059 3005 }
7d174059 3006
9894dc0c
DB		 3007 for (i = 0; i < s->read_msgfds_num; i++) {
3008 int fd = s->read_msgfds[i];
3009 if (fd < 0) {
3010 continue;
3011 }
9977c894 3012
9894dc0c
DB		 3013 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
3014 qemu_set_block(fd);
7d174059 3015
9894dc0c
DB		 3016#ifndef MSG_CMSG_CLOEXEC
3017 qemu_set_cloexec(fd);
06138651 3018#endif
06138651 3019 }
9977c894 3020
7d174059 3021 return ret;
9977c894 3022}
9977c894 3023
d3cc5bc4
AS		 3024static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
3025{
3026 TCPCharDriver *s = chr->opaque;
9894dc0c 3027 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 3028}
3029
5b498459 3030static void tcp_chr_free_connection(CharDriverState *chr)
7b0bfdf5
NN		 3031{
3032 TCPCharDriver *s = chr->opaque;
5b498459 3033 int i;
7b0bfdf5 3034
342f7a9d
MAL		 3035 if (!s->connected) {
3036 return;
3037 }
3038
5b498459
MAL		 3039 if (s->read_msgfds_num) {
3040 for (i = 0; i < s->read_msgfds_num; i++) {
3041 close(s->read_msgfds[i]);
3042 }
3043 g_free(s->read_msgfds);
3044 s->read_msgfds = NULL;
3045 s->read_msgfds_num = 0;
7b0bfdf5 3046 }
5b498459 3047
6167ebbd 3048 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 3049 remove_fd_in_watch(chr);
a8fb5427
DB		 3050 object_unref(OBJECT(s->sioc));
3051 s->sioc = NULL;
9894dc0c
DB		 3052 object_unref(OBJECT(s->ioc));
3053 s->ioc = NULL;
0ff0fad2 3054 g_free(chr->filename);
5b498459
MAL		 3055 chr->filename = NULL;
3056 s->connected = 0;
3057}
3058
3059static void tcp_chr_disconnect(CharDriverState *chr)
3060{
3061 TCPCharDriver *s = chr->opaque;
3062
3063 if (!s->connected) {
3064 return;
3065 }
3066
3067 tcp_chr_free_connection(chr);
3068
3069 if (s->listen_ioc) {
3070 s->listen_tag = qio_channel_add_watch(
3071 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
3072 }
0ff0fad2
DB		 3073 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
3074 s->is_listen, s->is_telnet);
7b0bfdf5 3075 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 3076 if (s->reconnect_time) {
3077 qemu_chr_socket_restart_timer(chr);
3078 }
7b0bfdf5
NN		 3079}
3080
9894dc0c 3081static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 3082{
3083 CharDriverState *chr = opaque;
3084 TCPCharDriver *s = chr->opaque;
9bd7854e 3085 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 3086 int len, size;
3087
2ea5a7af 3088 if (!s->connected || s->max_size <= 0) {
cdbf6e16 3089 return TRUE;
2ea5a7af 3090 }
6f97dba0
AL		 3091 len = sizeof(buf);
3092 if (len > s->max_size)
3093 len = s->max_size;
9977c894 3094 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 3095 if (size == 0 || size == -1) {
6f97dba0 3096 /* connection closed */
7b0bfdf5 3097 tcp_chr_disconnect(chr);
6f97dba0
AL		 3098 } else if (size > 0) {
3099 if (s->do_telnetopt)
3100 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
3101 if (size > 0)
fa5efccb 3102 qemu_chr_be_write(chr, buf, size);
6f97dba0 3103 }
2ea5a7af
AL		 3104
3105 return TRUE;
6f97dba0
AL		 3106}
3107
7b0bfdf5
NN		 3108static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
3109{
3110 TCPCharDriver *s = chr->opaque;
3111 int size;
3112
3113 if (!s->connected) {
3114 return 0;
3115 }
3116
3117 size = tcp_chr_recv(chr, (void *) buf, len);
3118 if (size == 0) {
3119 /* connection closed */
3120 tcp_chr_disconnect(chr);
3121 }
3122
3123 return size;
3124}
3125
6f97dba0
AL		 3126static void tcp_chr_connect(void *opaque)
3127{
3128 CharDriverState *chr = opaque;
3129 TCPCharDriver *s = chr->opaque;
16cc4ffe 3130
0ff0fad2 3131 g_free(chr->filename);
a8fb5427
DB		 3132 chr->filename = sockaddr_to_str(
3133 &s->sioc->localAddr, s->sioc->localAddrLen,
3134 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
3135 s->is_listen, s->is_telnet);
6f97dba0
AL		 3136
3137 s->connected = 1;
9894dc0c
DB		 3138 if (s->ioc) {
3139 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3140 tcp_chr_read_poll,
e92aa36a
ZC		 3141 tcp_chr_read,
3142 chr, NULL);
bbdd2ad0 3143 }
fee204fd 3144 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 3145}
3146
e92aa36a 3147static void tcp_chr_update_read_handler(CharDriverState *chr,
a4afa548 3148 GMainContext *context)
ac1b84dd
GH		 3149{
3150 TCPCharDriver *s = chr->opaque;
3151
1e94f23d
DB		 3152 if (!s->connected) {
3153 return;
3154 }
3155
ac1b84dd 3156 remove_fd_in_watch(chr);
9894dc0c
DB		 3157 if (s->ioc) {
3158 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3159 tcp_chr_read_poll,
e92aa36a
ZC		 3160 tcp_chr_read, chr,
3161 context);
ac1b84dd
GH		 3162 }
3163}
3164
f2001a7e
DB		 3165typedef struct {
3166 CharDriverState *chr;
3167 char buf[12];
3168 size_t buflen;
3169} TCPCharDriverTelnetInit;
3170
3171static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
3172 GIOCondition cond G_GNUC_UNUSED,
3173 gpointer user_data)
6f97dba0 3174{
f2001a7e
DB		 3175 TCPCharDriverTelnetInit *init = user_data;
3176 ssize_t ret;
3177
3178 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3179 if (ret < 0) {
3180 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3181 ret = 0;
3182 } else {
3183 tcp_chr_disconnect(init->chr);
3184 return FALSE;
3185 }
3186 }
3187 init->buflen -= ret;
3188
3189 if (init->buflen == 0) {
3190 tcp_chr_connect(init->chr);
3191 return FALSE;
3192 }
3193
3194 memmove(init->buf, init->buf + ret, init->buflen);
3195
3196 return TRUE;
3197}
3198
3199static void tcp_chr_telnet_init(CharDriverState *chr)
3200{
3201 TCPCharDriver *s = chr->opaque;
3202 TCPCharDriverTelnetInit *init =
3203 g_new0(TCPCharDriverTelnetInit, 1);
3204 size_t n = 0;
3205
3206 init->chr = chr;
3207 init->buflen = 12;
3208
3209#define IACSET(x, a, b, c) \
3210 do { \
3211 x[n++] = a; \
3212 x[n++] = b; \
3213 x[n++] = c; \
3214 } while (0)
3215
3216 /* Prep the telnet negotion to put telnet in binary,
3217 * no echo, single char mode */
3218 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3219 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3220 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3221 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3222
3223#undef IACSET
3224
3225 qio_channel_add_watch(
3226 s->ioc, G_IO_OUT,
3227 tcp_chr_telnet_init_io,
3228 init, NULL);
6f97dba0
AL		 3229}
3230
a8fb5427
DB		 3231
3232static void tcp_chr_tls_handshake(Object *source,
3233 Error *err,
3234 gpointer user_data)
3235{
3236 CharDriverState *chr = user_data;
3237 TCPCharDriver *s = chr->opaque;
3238
3239 if (err) {
3240 tcp_chr_disconnect(chr);
3241 } else {
3242 if (s->do_telnetopt) {
3243 tcp_chr_telnet_init(chr);
3244 } else {
3245 tcp_chr_connect(chr);
3246 }
3247 }
3248}
3249
3250
3251static void tcp_chr_tls_init(CharDriverState *chr)
3252{
3253 TCPCharDriver *s = chr->opaque;
3254 QIOChannelTLS *tioc;
3255 Error *err = NULL;
3256
3257 if (s->is_listen) {
3258 tioc = qio_channel_tls_new_server(
3259 s->ioc, s->tls_creds,
3260 NULL, /* XXX Use an ACL */
3261 &err);
3262 } else {
3263 tioc = qio_channel_tls_new_client(
3264 s->ioc, s->tls_creds,
32bafa8f 3265 s->addr->u.inet.data->host,
a8fb5427
DB		 3266 &err);
3267 }
3268 if (tioc == NULL) {
3269 error_free(err);
3270 tcp_chr_disconnect(chr);
660a2d83 3271 return;
a8fb5427
DB		 3272 }
3273 object_unref(OBJECT(s->ioc));
3274 s->ioc = QIO_CHANNEL(tioc);
3275
3276 qio_channel_tls_handshake(tioc,
3277 tcp_chr_tls_handshake,
3278 chr,
3279 NULL);
3280}
3281
3282
9894dc0c 3283static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3284{
3285 TCPCharDriver *s = chr->opaque;
9894dc0c 3286 if (s->ioc != NULL) {
13661089 3287 return -1;
9894dc0c 3288 }
13661089 3289
9894dc0c
DB		 3290 s->ioc = QIO_CHANNEL(sioc);
3291 object_ref(OBJECT(sioc));
a8fb5427
DB		 3292 s->sioc = sioc;
3293 object_ref(OBJECT(sioc));
9894dc0c 3294
64c800f8
DB		 3295 qio_channel_set_blocking(s->ioc, false, NULL);
3296
9894dc0c
DB		 3297 if (s->do_nodelay) {
3298 qio_channel_set_delay(s->ioc, false);
3299 }
910b6368
PB		 3300 if (s->listen_tag) {
3301 g_source_remove(s->listen_tag);
3302 s->listen_tag = 0;
3303 }
f2001a7e 3304
a8fb5427
DB		 3305 if (s->tls_creds) {
3306 tcp_chr_tls_init(chr);
f2001a7e 3307 } else {
a8fb5427
DB		 3308 if (s->do_telnetopt) {
3309 tcp_chr_telnet_init(chr);
3310 } else {
3311 tcp_chr_connect(chr);
3312 }
f2001a7e 3313 }
13661089
DB		 3314
3315 return 0;
3316}
3317
9894dc0c
DB		 3318
3319static int tcp_chr_add_client(CharDriverState *chr, int fd)
3320{
3321 int ret;
3322 QIOChannelSocket *sioc;
3323
3324 sioc = qio_channel_socket_new_fd(fd, NULL);
3325 if (!sioc) {
3326 return -1;
3327 }
9894dc0c
DB		 3328 ret = tcp_chr_new_client(chr, sioc);
3329 object_unref(OBJECT(sioc));
3330 return ret;
3331}
3332
3333static gboolean tcp_chr_accept(QIOChannel *channel,
3334 GIOCondition cond,
3335 void *opaque)
6f97dba0
AL		 3336{
3337 CharDriverState *chr = opaque;
9894dc0c 3338 QIOChannelSocket *sioc;
6f97dba0 3339
9894dc0c
DB		 3340 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3341 NULL);
3342 if (!sioc) {
3343 return TRUE;
6f97dba0 3344 }
9894dc0c 3345
9894dc0c
DB		 3346 tcp_chr_new_client(chr, sioc);
3347
3348 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3349
3350 return TRUE;
6f97dba0
AL		 3351}
3352
d7a04fd7
MAL		 3353static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
3354{
3355 TCPCharDriver *s = chr->opaque;
3356 QIOChannelSocket *sioc;
3357
1dc8a669
MAL		 3358 /* It can't wait on s->connected, since it is set asynchronously
3359 * in TLS and telnet cases, only wait for an accepted socket */
3360 while (!s->ioc) {
d7a04fd7
MAL		 3361 if (s->is_listen) {
3362 fprintf(stderr, "QEMU waiting for connection on: %s\n",
3363 chr->filename);
3364 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3365 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3366 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3367 } else {
3368 sioc = qio_channel_socket_new();
3369 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3370 object_unref(OBJECT(sioc));
3371 return -1;
3372 }
3373 tcp_chr_new_client(chr, sioc);
3374 object_unref(OBJECT(sioc));
3375 }
3376 }
3377
3378 return 0;
3379}
3380
5345fdb4 3381static int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
6b6723c3
MAL		 3382{
3383 if (chr->chr_wait_connected) {
3384 return chr->chr_wait_connected(chr, errp);
3385 }
3386
3387 return 0;
3388}
3389
5345fdb4
MAL		 3390int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
3391{
fa394ed6
MAL		 3392 if (!be->chr) {
3393 error_setg(errp, "missing associated backend");
3394 return -1;
3395 }
3396
5345fdb4
MAL		 3397 return qemu_chr_wait_connected(be->chr, errp);
3398}
3399
72ac8762 3400static void tcp_chr_free(CharDriverState *chr)
6f97dba0
AL		 3401{
3402 TCPCharDriver *s = chr->opaque;
5b498459
MAL		 3403
3404 tcp_chr_free_connection(chr);
cfb429cb 3405
5dd1f02b
CM		 3406 if (s->reconnect_timer) {
3407 g_source_remove(s->reconnect_timer);
3408 s->reconnect_timer = 0;
3409 }
cfb429cb 3410 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3411 if (s->listen_tag) {
3412 g_source_remove(s->listen_tag);
3413 s->listen_tag = 0;
3414 }
3415 if (s->listen_ioc) {
3416 object_unref(OBJECT(s->listen_ioc));
819f56b7 3417 }
a8fb5427
DB		 3418 if (s->tls_creds) {
3419 object_unref(OBJECT(s->tls_creds));
3420 }
7267c094 3421 g_free(s);
a425d23f 3422 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3423}
3424
43ded1a0 3425
9894dc0c 3426static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3427{
9894dc0c 3428 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3429 CharDriverState *chr = opaque;
5008e5b7 3430 TCPCharDriver *s = chr->opaque;
5dd1f02b 3431
9894dc0c 3432 if (err) {
5008e5b7 3433 check_report_connect_error(chr, err);
9894dc0c 3434 object_unref(src);
5dd1f02b
CM		 3435 return;
3436 }
3437
5008e5b7 3438 s->connect_err_reported = false;
f50dfe45
DB		 3439 tcp_chr_new_client(chr, sioc);
3440 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3441}
3442
f6bd5d6e 3443
51767e7c 3444/*********************************************************/
3949e594 3445/* Ring buffer chardev */
51767e7c
LL		 3446
3447typedef struct {
3448 size_t size;
3449 size_t prod;
3450 size_t cons;
3451 uint8_t *cbuf;
3949e594 3452} RingBufCharDriver;
51767e7c 3453
3949e594 3454static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3455{
3949e594 3456 const RingBufCharDriver *d = chr->opaque;
51767e7c 3457
5c230105 3458 return d->prod - d->cons;
51767e7c
LL		 3459}
3460
9005b2a7 3461/* Called with chr_write_lock held. */
3949e594 3462static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3463{
3949e594 3464 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3465 int i;
3466
3467 if (!buf || (len < 0)) {
3468 return -1;
3469 }
3470
3471 for (i = 0; i < len; i++ ) {
5c230105
MA		 3472 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3473 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3474 d->cons = d->prod - d->size;
3475 }
3476 }
3477
5c936a83 3478 return len;
51767e7c
LL		 3479}
3480
3949e594 3481static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3482{
3949e594 3483 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3484 int i;
3485
9005b2a7 3486 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3487 for (i = 0; i < len && d->cons != d->prod; i++) {
3488 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3489 }
9005b2a7 3490 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3491
3492 return i;
3493}
3494
72ac8762 3495static void ringbuf_chr_free(struct CharDriverState *chr)
51767e7c 3496{
3949e594 3497 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3498
3499 g_free(d->cbuf);
3500 g_free(d);
3501 chr->opaque = NULL;
3502}
3503
479f09a1
PB		 3504static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3505 ChardevBackend *backend,
3506 ChardevReturn *ret,
4f57378f 3507 Error **errp)
51767e7c 3508{
32bafa8f 3509 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3510 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3511 CharDriverState *chr;
3949e594 3512 RingBufCharDriver *d;
51767e7c 3513
d0d7708b
DB		 3514 chr = qemu_chr_alloc(common, errp);
3515 if (!chr) {
3516 return NULL;
3517 }
51767e7c
LL		 3518 d = g_malloc(sizeof(*d));
3519
1da48c65 3520 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3521
3522 /* The size must be power of 2 */
3523 if (d->size & (d->size - 1)) {
4f57378f 3524 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3525 goto fail;
3526 }
3527
3528 d->prod = 0;
3529 d->cons = 0;
3530 d->cbuf = g_malloc0(d->size);
3531
3532 chr->opaque = d;
3949e594 3533 chr->chr_write = ringbuf_chr_write;
72ac8762 3534 chr->chr_free = ringbuf_chr_free;
51767e7c
LL		 3535
3536 return chr;
3537
3538fail:
3539 g_free(d);
d0d7708b 3540 qemu_chr_free_common(chr);
51767e7c
LL		 3541 return NULL;
3542}
3543
8e597779 3544bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3545{
3949e594 3546 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3547}
3548
3949e594 3549void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3550 bool has_format, enum DataFormat format,
1f590cf9
LL		 3551 Error **errp)
3552{
3553 CharDriverState *chr;
c4f331b6 3554 const uint8_t *write_data;
1f590cf9 3555 int ret;
3d1bba20 3556 gsize write_count;
1f590cf9
LL		 3557
3558 chr = qemu_chr_find(device);
3559 if (!chr) {
1a69278e 3560 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3561 return;
3562 }
3563
3949e594
MA		 3564 if (!chr_is_ringbuf(chr)) {
3565 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3566 return;
3567 }
3568
1f590cf9 3569 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3570 write_data = qbase64_decode(data, -1,
3571 &write_count,
3572 errp);
3573 if (!write_data) {
3574 return;
3575 }
1f590cf9
LL		 3576 } else {
3577 write_data = (uint8_t *)data;
82e59a67 3578 write_count = strlen(data);
1f590cf9
LL		 3579 }
3580
3949e594 3581 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3582
13289fb5
MA		 3583 if (write_data != (uint8_t *)data) {
3584 g_free((void *)write_data);
3585 }
3586
1f590cf9
LL		 3587 if (ret < 0) {
3588 error_setg(errp, "Failed to write to device %s", device);
3589 return;
3590 }
3591}
3592
3949e594 3593char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3594 bool has_format, enum DataFormat format,
3595 Error **errp)
49b6d722
LL		 3596{
3597 CharDriverState *chr;
c4f331b6 3598 uint8_t *read_data;
49b6d722 3599 size_t count;
3ab651fc 3600 char *data;
49b6d722
LL		 3601
3602 chr = qemu_chr_find(device);
3603 if (!chr) {
1a69278e 3604 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3605 return NULL;
3606 }
3607
3949e594
MA		 3608 if (!chr_is_ringbuf(chr)) {
3609 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3610 return NULL;
3611 }
3612
3613 if (size <= 0) {
3614 error_setg(errp, "size must be greater than zero");
3615 return NULL;
3616 }
3617
3949e594 3618 count = ringbuf_count(chr);
49b6d722 3619 size = size > count ? count : size;
44f3bcd2 3620 read_data = g_malloc(size + 1);
49b6d722 3621
3949e594 3622 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3623
3624 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3625 data = g_base64_encode(read_data, size);
13289fb5 3626 g_free(read_data);
49b6d722 3627 } else {
3949e594
MA		 3628 /*
3629 * FIXME should read only complete, valid UTF-8 characters up
3630 * to @size bytes. Invalid sequences should be replaced by a
3631 * suitable replacement character. Except when (and only
3632 * when) ring buffer lost characters since last read, initial
3633 * continuation characters should be dropped.
3634 */
44f3bcd2 3635 read_data[size] = 0;
3ab651fc 3636 data = (char *)read_data;
49b6d722
LL		 3637 }
3638
3ab651fc 3639 return data;
49b6d722
LL		 3640}
3641
33521634 3642QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3643{
6ea314d9 3644 char host[65], port[33], width[8], height[8];
aeb2c47a 3645 int pos;
7d31544f 3646 const char *p;
191bc01b 3647 QemuOpts *opts;
8be7e7e4 3648 Error *local_err = NULL;
191bc01b 3649
8be7e7e4 3650 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3651 if (local_err) {
33394884 3652 error_report_err(local_err);
191bc01b 3653 return NULL;
8be7e7e4 3654 }
191bc01b 3655
7591c5c1
GH		 3656 if (strstart(filename, "mon:", &p)) {
3657 filename = p;
f43e47db 3658 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3659 if (strcmp(filename, "stdio") == 0) {
3660 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3661 * but pass it to the guest. Handle this only for compat syntax,
3662 * for -chardev syntax we have special option for this.
3663 * This is what -nographic did, redirecting+muxing serial+monitor
3664 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3665 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3666 }
7591c5c1
GH		 3667 }
3668
f0457e8d
GH		 3669 if (strcmp(filename, "null") == 0 ||
3670 strcmp(filename, "pty") == 0 ||
3671 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3672 strcmp(filename, "braille") == 0 ||
5692399f 3673 strcmp(filename, "testdev") == 0 ||
f0457e8d 3674 strcmp(filename, "stdio") == 0) {
f43e47db 3675 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3676 return opts;
3677 }
6ea314d9 3678 if (strstart(filename, "vc", &p)) {
f43e47db 3679 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3680 if (*p == ':') {
49aa4058 3681 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3682 /* pixels */
f43e47db
MA		 3683 qemu_opt_set(opts, "width", width, &error_abort);
3684 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3685 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3686 /* chars */
f43e47db
MA		 3687 qemu_opt_set(opts, "cols", width, &error_abort);
3688 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3689 } else {
3690 goto fail;
3691 }
3692 }
3693 return opts;
3694 }
d6c983cd 3695 if (strcmp(filename, "con:") == 0) {
f43e47db 3696 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3697 return opts;
3698 }
48b76496 3699 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3700 qemu_opt_set(opts, "backend", "serial", &error_abort);
3701 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3702 return opts;
3703 }
7d31544f 3704 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3705 qemu_opt_set(opts, "backend", "file", &error_abort);
3706 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3707 return opts;
3708 }
3709 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3710 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3711 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3712 return opts;
3713 }
aeb2c47a
GH		 3714 if (strstart(filename, "tcp:", &p) ||
3715 strstart(filename, "telnet:", &p)) {
3716 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3717 host[0] = 0;
3718 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3719 goto fail;
3720 }
f43e47db
MA		 3721 qemu_opt_set(opts, "backend", "socket", &error_abort);
3722 qemu_opt_set(opts, "host", host, &error_abort);
3723 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3724 if (p[pos] == ',') {
dc523cd3
MA		 3725 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3726 if (local_err) {
3727 error_report_err(local_err);
aeb2c47a 3728 goto fail;
dc523cd3 3729 }
aeb2c47a
GH		 3730 }
3731 if (strstart(filename, "telnet:", &p))
f43e47db 3732 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3733 return opts;
3734 }
7e1b35b4 3735 if (strstart(filename, "udp:", &p)) {
f43e47db 3736 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3737 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3738 host[0] = 0;
39324ca4 3739 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3740 goto fail;
3741 }
3742 }
f43e47db
MA		 3743 qemu_opt_set(opts, "host", host, &error_abort);
3744 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3745 if (p[pos] == '@') {
3746 p += pos + 1;
3747 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3748 host[0] = 0;
3749 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3750 goto fail;
3751 }
3752 }
f43e47db
MA		 3753 qemu_opt_set(opts, "localaddr", host, &error_abort);
3754 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3755 }
3756 return opts;
3757 }
aeb2c47a 3758 if (strstart(filename, "unix:", &p)) {
f43e47db 3759 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3760 qemu_opts_do_parse(opts, p, "path", &local_err);
3761 if (local_err) {
3762 error_report_err(local_err);
aeb2c47a 3763 goto fail;
dc523cd3 3764 }
aeb2c47a
GH		 3765 return opts;
3766 }
48b76496
GH		 3767 if (strstart(filename, "/dev/parport", NULL) ||
3768 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3769 qemu_opt_set(opts, "backend", "parport", &error_abort);
3770 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3771 return opts;
3772 }
3773 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3774 qemu_opt_set(opts, "backend", "tty", &error_abort);
3775 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3776 return opts;
3777 }
191bc01b 3778
aeb2c47a 3779fail:
191bc01b
GH		 3780 qemu_opts_del(opts);
3781 return NULL;
3782}
3783
21a933ea 3784void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3785{
3786 const char *logfile = qemu_opt_get(opts, "logfile");
3787
3788 backend->has_logfile = logfile != NULL;
3789 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3790
3791 backend->has_logappend = true;
3792 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3793}
3794
3795
846e2e49
GH		 3796static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3797 Error **errp)
3798{
3799 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3800 ChardevFile *file;
846e2e49
GH		 3801
3802 if (path == NULL) {
3803 error_setg(errp, "chardev: file: no filename given");
3804 return;
3805 }
32bafa8f 3806 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3807 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3808 file->out = g_strdup(path);
31e38a22 3809
f194a1ae
EB		 3810 file->has_append = true;
3811 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3812}
3813
7c358031
GH		 3814static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3815 Error **errp)
3816{
f194a1ae
EB		 3817 ChardevStdio *stdio;
3818
32bafa8f 3819 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3820 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3821 stdio->has_signal = true;
3822 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3823}
3824
6511d396 3825#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3826static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3827 Error **errp)
3828{
3829 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3830 ChardevHostdev *serial;
0f1cb51d
GH		 3831
3832 if (device == NULL) {
3833 error_setg(errp, "chardev: serial/tty: no device path given");
3834 return;
3835 }
32bafa8f 3836 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3837 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3838 serial->device = g_strdup(device);
0f1cb51d 3839}
6511d396 3840#endif
0f1cb51d 3841
38bfb1a6 3842#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3843static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3844 Error **errp)
3845{
3846 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3847 ChardevHostdev *parallel;
dc375097
GH		 3848
3849 if (device == NULL) {
3850 error_setg(errp, "chardev: parallel: no device path given");
3851 return;
3852 }
32bafa8f 3853 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3854 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3855 parallel->device = g_strdup(device);
dc375097 3856}
38bfb1a6 3857#endif
dc375097 3858
548cbb36
GH		 3859static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3860 Error **errp)
3861{
3862 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3863 ChardevHostdev *dev;
548cbb36
GH		 3864
3865 if (device == NULL) {
3866 error_setg(errp, "chardev: pipe: no device path given");
3867 return;
3868 }
32bafa8f 3869 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3870 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3871 dev->device = g_strdup(device);
548cbb36
GH		 3872}
3873
4f57378f
MA		 3874static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3875 Error **errp)
1da48c65
GH		 3876{
3877 int val;
f194a1ae 3878 ChardevRingbuf *ringbuf;
1da48c65 3879
32bafa8f 3880 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3881 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3882
0f953051 3883 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3884 if (val != 0) {
f194a1ae
EB		 3885 ringbuf->has_size = true;
3886 ringbuf->size = val;
1da48c65
GH		 3887 }
3888}
3889
bb6fb7c0
GH		 3890static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3891 Error **errp)
3892{
3893 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3894 ChardevMux *mux;
bb6fb7c0
GH		 3895
3896 if (chardev == NULL) {
3897 error_setg(errp, "chardev: mux: no chardev given");
3898 return;
3899 }
32bafa8f 3900 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3901 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3902 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3903}
3904
dafd325d
PM		 3905static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3906 Error **errp)
3907{
3908 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3909 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3910 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3911 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3912 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3913 const char *path = qemu_opt_get(opts, "path");
3914 const char *host = qemu_opt_get(opts, "host");
3915 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3916 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3917 SocketAddress *addr;
f194a1ae 3918 ChardevSocket *sock;
dafd325d
PM		 3919
3920 if (!path) {
3921 if (!host) {
3922 error_setg(errp, "chardev: socket: no host given");
3923 return;
3924 }
3925 if (!port) {
3926 error_setg(errp, "chardev: socket: no port given");
3927 return;
3928 }
a8fb5427
DB		 3929 } else {
3930 if (tls_creds) {
3931 error_setg(errp, "TLS can only be used over TCP socket");
3932 return;
3933 }
dafd325d
PM		 3934 }
3935
32bafa8f 3936 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3937 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3938
f194a1ae
EB		 3939 sock->has_nodelay = true;
3940 sock->nodelay = do_nodelay;
3941 sock->has_server = true;
3942 sock->server = is_listen;
3943 sock->has_telnet = true;
3944 sock->telnet = is_telnet;
3945 sock->has_wait = true;
3946 sock->wait = is_waitconnect;
3947 sock->has_reconnect = true;
3948 sock->reconnect = reconnect;
3949 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3950
3951 addr = g_new0(SocketAddress, 1);
3952 if (path) {
0399293e 3953 UnixSocketAddress *q_unix;
130257dc 3954 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3955 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3956 q_unix->path = g_strdup(path);
dafd325d 3957 } else {
130257dc 3958 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3959 addr->u.inet.data = g_new(InetSocketAddress, 1);
3960 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3961 .host = g_strdup(host),
3962 .port = g_strdup(port),
3963 .has_to = qemu_opt_get(opts, "to"),
3964 .to = qemu_opt_get_number(opts, "to", 0),
3965 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3966 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3967 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3968 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3969 };
dafd325d 3970 }
f194a1ae 3971 sock->addr = addr;
dafd325d
PM		 3972}
3973
90a14bfe
PM		 3974static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3975 Error **errp)
3976{
3977 const char *host = qemu_opt_get(opts, "host");
3978 const char *port = qemu_opt_get(opts, "port");
3979 const char *localaddr = qemu_opt_get(opts, "localaddr");
3980 const char *localport = qemu_opt_get(opts, "localport");
3981 bool has_local = false;
3982 SocketAddress *addr;
f194a1ae 3983 ChardevUdp *udp;
90a14bfe
PM		 3984
3985 if (host == NULL || strlen(host) == 0) {
3986 host = "localhost";
3987 }
3988 if (port == NULL || strlen(port) == 0) {
3989 error_setg(errp, "chardev: udp: remote port not specified");
3990 return;
3991 }
3992 if (localport == NULL || strlen(localport) == 0) {
3993 localport = "0";
3994 } else {
3995 has_local = true;
3996 }
3997 if (localaddr == NULL || strlen(localaddr) == 0) {
3998 localaddr = "";
3999 } else {
4000 has_local = true;
4001 }
4002
32bafa8f 4003 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 4004 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 4005
4006 addr = g_new0(SocketAddress, 1);
130257dc 4007 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4008 addr->u.inet.data = g_new(InetSocketAddress, 1);
4009 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4010 .host = g_strdup(host),
4011 .port = g_strdup(port),
4012 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
4013 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
4014 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
4015 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
4016 };
f194a1ae 4017 udp->remote = addr;
90a14bfe
PM		 4018
4019 if (has_local) {
f194a1ae 4020 udp->has_local = true;
90a14bfe 4021 addr = g_new0(SocketAddress, 1);
130257dc 4022 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4023 addr->u.inet.data = g_new(InetSocketAddress, 1);
4024 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4025 .host = g_strdup(localaddr),
4026 .port = g_strdup(localport),
4027 };
f194a1ae 4028 udp->local = addr;
90a14bfe
PM		 4029 }
4030}
4031
d654f34e 4032typedef struct CharDriver {
191bc01b 4033 const char *name;
99aec012 4034 ChardevBackendKind kind;
2c5f4882 4035 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 4036 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
4037 ChardevReturn *ret, Error **errp);
d654f34e
AL		 4038} CharDriver;
4039
4040static GSList *backends;
4041
e4d50d47 4042void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 4043 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
4044 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
4045 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 4046{
4047 CharDriver *s;
4048
4049 s = g_malloc0(sizeof(*s));
4050 s->name = g_strdup(name);
4051 s->kind = kind;
4052 s->parse = parse;
4ca17281 4053 s->create = create;
2c5f4882
GH		 4054
4055 backends = g_slist_append(backends, s);
4056}
4057
f69554b9 4058CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
b4948be9 4059 Error **errp)
191bc01b 4060{
0aff637e 4061 Error *local_err = NULL;
d654f34e 4062 CharDriver *cd;
191bc01b 4063 CharDriverState *chr;
d654f34e 4064 GSList *i;
a61ae7f8
PM		 4065 ChardevReturn *ret = NULL;
4066 ChardevBackend *backend;
4067 const char *id = qemu_opts_id(opts);
4068 char *bid = NULL;
191bc01b 4069
1bbd185f 4070 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 4071 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 4072 qemu_opts_id(opts));
2274ae9d 4073 goto err;
1bbd185f 4074 }
517b3d40
LM		 4075
4076 if (is_help_option(qemu_opt_get(opts, "backend"))) {
4077 fprintf(stderr, "Available chardev backend types:\n");
4078 for (i = backends; i; i = i->next) {
4079 cd = i->data;
4080 fprintf(stderr, "%s\n", cd->name);
4081 }
4082 exit(!is_help_option(qemu_opt_get(opts, "backend")));
4083 }
4084
4085 if (id == NULL) {
4086 error_setg(errp, "chardev: no id specified");
4087 goto err;
4088 }
4089
d654f34e
AL		 4090 for (i = backends; i; i = i->next) {
4091 cd = i->data;
4092
4093 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 4094 break;
d654f34e 4095 }
191bc01b 4096 }
d654f34e 4097 if (i == NULL) {
312fd5f2 4098 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 4099 qemu_opt_get(opts, "backend"));
e668287d 4100 goto err;
191bc01b
GH		 4101 }
4102
a61ae7f8 4103 backend = g_new0(ChardevBackend, 1);
edb2fb3c 4104
a61ae7f8
PM		 4105 if (qemu_opt_get_bool(opts, "mux", 0)) {
4106 bid = g_strdup_printf("%s-base", id);
4107 }
2c5f4882 4108
a61ae7f8 4109 chr = NULL;
130257dc 4110 backend->type = cd->kind;
a61ae7f8
PM		 4111 if (cd->parse) {
4112 cd->parse(opts, backend, &local_err);
4113 if (local_err) {
4114 error_propagate(errp, local_err);
2c5f4882
GH		 4115 goto qapi_out;
4116 }
d0d7708b
DB		 4117 } else {
4118 ChardevCommon *cc = g_new0(ChardevCommon, 1);
4119 qemu_chr_parse_common(opts, cc);
32bafa8f 4120 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 4121 }
d0d7708b 4122
a61ae7f8
PM		 4123 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
4124 if (!ret) {
4125 goto qapi_out;
191bc01b
GH		 4126 }
4127
a61ae7f8
PM		 4128 if (bid) {
4129 qapi_free_ChardevBackend(backend);
4130 qapi_free_ChardevReturn(ret);
4131 backend = g_new0(ChardevBackend, 1);
32bafa8f 4132 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 4133 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 4134 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 4135 ret = qmp_chardev_add(id, backend, errp);
4136 if (!ret) {
4137 chr = qemu_chr_find(bid);
4138 qemu_chr_delete(chr);
4139 chr = NULL;
4140 goto qapi_out;
4141 }
bd5c51ee 4142 }
7591c5c1 4143
a61ae7f8 4144 chr = qemu_chr_find(id);
a61ae7f8
PM		 4145
4146qapi_out:
4147 qapi_free_ChardevBackend(backend);
4148 qapi_free_ChardevReturn(ret);
4149 g_free(bid);
191bc01b 4150 return chr;
2274ae9d
GH		 4151
4152err:
2274ae9d 4153 return NULL;
191bc01b
GH		 4154}
4155
b4948be9 4156CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename)
6f97dba0
AL		 4157{
4158 const char *p;
4159 CharDriverState *chr;
191bc01b 4160 QemuOpts *opts;
bd2d80b2 4161 Error *err = NULL;
191bc01b 4162
c845f401
GH		 4163 if (strstart(filename, "chardev:", &p)) {
4164 return qemu_chr_find(p);
4165 }
4166
191bc01b 4167 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 4168 if (!opts)
4169 return NULL;
6f97dba0 4170
b4948be9 4171 chr = qemu_chr_new_from_opts(opts, &err);
84d18f06 4172 if (err) {
565f65d2 4173 error_report_err(err);
bd2d80b2 4174 }
7e1b35b4
GH		 4175 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
4176 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0 4177 }
0a73336d 4178 qemu_opts_del(opts);
6f97dba0
AL		 4179 return chr;
4180}
4181
b4948be9 4182CharDriverState *qemu_chr_new(const char *label, const char *filename)
33577b47
PD		 4183{
4184 CharDriverState *chr;
b4948be9 4185 chr = qemu_chr_new_noreplay(label, filename);
33577b47
PD		 4186 if (chr) {
4187 chr->replay = replay_mode != REPLAY_MODE_NONE;
4188 if (chr->replay && chr->chr_ioctl) {
4189 fprintf(stderr,
4190 "Replay: ioctl is not supported for serial devices yet\n");
4191 }
4192 replay_register_char_driver(chr);
4193 }
4194 return chr;
4195}
4196
5345fdb4 4197void qemu_chr_fe_set_echo(CharBackend *be, bool echo)
c48855e1 4198{
5345fdb4
MAL		 4199 CharDriverState *chr = be->chr;
4200
fa394ed6 4201 if (chr && chr->chr_set_echo) {
c48855e1
PB		 4202 chr->chr_set_echo(chr, echo);
4203 }
4204}
4205
5345fdb4 4206void qemu_chr_fe_set_open(CharBackend *be, int fe_open)
7c32c4fe 4207{
5345fdb4
MAL		 4208 CharDriverState *chr = be->chr;
4209
fa394ed6
MAL		 4210 if (!chr) {
4211 return;
4212 }
4213
830896af 4214 if (be->fe_open == fe_open) {
c0c4bd2c
HG		 4215 return;
4216 }
830896af 4217 be->fe_open = fe_open;
574b711a
HG		 4218 if (chr->chr_set_fe_open) {
4219 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4220 }
4221}
4222
5345fdb4 4223guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
6f1de6b7 4224 GIOFunc func, void *user_data)
23673ca7 4225{
5345fdb4 4226 CharDriverState *s = be->chr;
23673ca7
AL		 4227 GSource *src;
4228 guint tag;
4229
fa394ed6 4230 if (!s || s->chr_add_watch == NULL) {
6f1de6b7 4231 return 0;
23673ca7
AL		 4232 }
4233
4234 src = s->chr_add_watch(s, cond);
62c339c5 4235 if (!src) {
6f1de6b7 4236 return 0;
62c339c5
PB		 4237 }
4238
23673ca7
AL		 4239 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4240 tag = g_source_attach(src, NULL);
4241 g_source_unref(src);
4242
4243 return tag;
4244}
4245
5345fdb4 4246void qemu_chr_fe_disconnect(CharBackend *be)
7d9d17f7 4247{
5345fdb4
MAL		 4248 CharDriverState *chr = be->chr;
4249
fa394ed6 4250 if (chr && chr->chr_disconnect) {
7d9d17f7
TM		 4251 chr->chr_disconnect(chr);
4252 }
4253}
4254
d0d7708b 4255static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4256{
a4afa548
MAL		 4257 if (chr->be) {
4258 chr->be->chr = NULL;
4259 }
7267c094
AL		 4260 g_free(chr->filename);
4261 g_free(chr->label);
d0d7708b
DB		 4262 if (chr->logfd != -1) {
4263 close(chr->logfd);
4264 }
fefd749c 4265 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4266 g_free(chr);
6f97dba0
AL		 4267}
4268
d0d7708b
DB		 4269void qemu_chr_free(CharDriverState *chr)
4270{
72ac8762
MAL		 4271 if (chr->chr_free) {
4272 chr->chr_free(chr);
d0d7708b
DB		 4273 }
4274 qemu_chr_free_common(chr);
4275}
4276
1ad78ea5
MAL		 4277void qemu_chr_delete(CharDriverState *chr)
4278{
4279 QTAILQ_REMOVE(&chardevs, chr, next);
4280 qemu_chr_free(chr);
4281}
4282
c5a415a0 4283ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4284{
c5a415a0 4285 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4286 CharDriverState *chr;
4287
72cf2d4f 4288 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4289 ChardevInfoList *info = g_malloc0(sizeof(*info));
4290 info->value = g_malloc0(sizeof(*info->value));
4291 info->value->label = g_strdup(chr->label);
4292 info->value->filename = g_strdup(chr->filename);
830896af 4293 info->value->frontend_open = chr->be && chr->be->fe_open;
c5a415a0
LC		 4294
4295 info->next = chr_list;
4296 chr_list = info;
6f97dba0 4297 }
588b3832 4298
c5a415a0 4299 return chr_list;
6f97dba0 4300}
c845f401 4301
77d1c3c6
MK		 4302ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4303{
4304 ChardevBackendInfoList *backend_list = NULL;
4305 CharDriver *c = NULL;
4306 GSList *i = NULL;
4307
4308 for (i = backends; i; i = i->next) {
4309 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4310 c = i->data;
4311 info->value = g_malloc0(sizeof(*info->value));
4312 info->value->name = g_strdup(c->name);
4313
4314 info->next = backend_list;
4315 backend_list = info;
4316 }
4317
4318 return backend_list;
4319}
4320
c845f401
GH		 4321CharDriverState *qemu_chr_find(const char *name)
4322{
4323 CharDriverState *chr;
4324
72cf2d4f 4325 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4326 if (strcmp(chr->label, name) != 0)
4327 continue;
4328 return chr;
4329 }
4330 return NULL;
4331}
0beb4942 4332
4d454574
PB		 4333QemuOptsList qemu_chardev_opts = {
4334 .name = "chardev",
4335 .implied_opt_name = "backend",
4336 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4337 .desc = {
4338 {
4339 .name = "backend",
4340 .type = QEMU_OPT_STRING,
4341 },{
4342 .name = "path",
4343 .type = QEMU_OPT_STRING,
4344 },{
4345 .name = "host",
4346 .type = QEMU_OPT_STRING,
4347 },{
4348 .name = "port",
4349 .type = QEMU_OPT_STRING,
4350 },{
4351 .name = "localaddr",
4352 .type = QEMU_OPT_STRING,
4353 },{
4354 .name = "localport",
4355 .type = QEMU_OPT_STRING,
4356 },{
4357 .name = "to",
4358 .type = QEMU_OPT_NUMBER,
4359 },{
4360 .name = "ipv4",
4361 .type = QEMU_OPT_BOOL,
4362 },{
4363 .name = "ipv6",
4364 .type = QEMU_OPT_BOOL,
4365 },{
4366 .name = "wait",
4367 .type = QEMU_OPT_BOOL,
4368 },{
4369 .name = "server",
4370 .type = QEMU_OPT_BOOL,
4371 },{
4372 .name = "delay",
4373 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4374 },{
4375 .name = "reconnect",
4376 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4377 },{
4378 .name = "telnet",
4379 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4380 },{
4381 .name = "tls-creds",
4382 .type = QEMU_OPT_STRING,
4d454574
PB		 4383 },{
4384 .name = "width",
4385 .type = QEMU_OPT_NUMBER,
4386 },{
4387 .name = "height",
4388 .type = QEMU_OPT_NUMBER,
4389 },{
4390 .name = "cols",
4391 .type = QEMU_OPT_NUMBER,
4392 },{
4393 .name = "rows",
4394 .type = QEMU_OPT_NUMBER,
4395 },{
4396 .name = "mux",
4397 .type = QEMU_OPT_BOOL,
4398 },{
4399 .name = "signal",
4400 .type = QEMU_OPT_BOOL,
4401 },{
4402 .name = "name",
4403 .type = QEMU_OPT_STRING,
4404 },{
4405 .name = "debug",
4406 .type = QEMU_OPT_NUMBER,
51767e7c 4407 },{
3949e594 4408 .name = "size",
de1cc36e 4409 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4410 },{
4411 .name = "chardev",
4412 .type = QEMU_OPT_STRING,
31e38a22
OK		 4413 },{
4414 .name = "append",
4415 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4416 },{
4417 .name = "logfile",
4418 .type = QEMU_OPT_STRING,
4419 },{
4420 .name = "logappend",
4421 .type = QEMU_OPT_BOOL,
4d454574
PB		 4422 },
4423 { /* end of list */ }
4424 },
4425};
f1a1a356 4426
ffbdbe59
GH		 4427#ifdef _WIN32
4428
fd5b036c
PB		 4429static CharDriverState *qmp_chardev_open_file(const char *id,
4430 ChardevBackend *backend,
4431 ChardevReturn *ret,
4432 Error **errp)
ffbdbe59 4433{
32bafa8f 4434 ChardevFile *file = backend->u.file.data;
f194a1ae 4435 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59 4436 HANDLE out;
c025f689
SW		 4437 DWORD accessmode;
4438 DWORD flags;
ffbdbe59 4439
e859eda5 4440 if (file->has_in) {
ffbdbe59
GH		 4441 error_setg(errp, "input file not supported");
4442 return NULL;
4443 }
4444
c025f689
SW		 4445 if (file->has_append && file->append) {
4446 /* Append to file if it already exists. */
4447 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4448 flags = OPEN_ALWAYS;
4449 } else {
4450 /* Truncate file if it already exists. */
4451 accessmode = GENERIC_WRITE;
4452 flags = CREATE_ALWAYS;
4453 }
4454
4455 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4456 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4457 if (out == INVALID_HANDLE_VALUE) {
4458 error_setg(errp, "open %s failed", file->out);
4459 return NULL;
4460 }
d0d7708b 4461 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4462}
4463
6511d396
PB		 4464static CharDriverState *qmp_chardev_open_serial(const char *id,
4465 ChardevBackend *backend,
4466 ChardevReturn *ret,
d36b2b90 4467 Error **errp)
d59044ef 4468{
32bafa8f 4469 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4470 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4471 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4472}
4473
ffbdbe59
GH		 4474#else /* WIN32 */
4475
4476static int qmp_chardev_open_file_source(char *src, int flags,
4477 Error **errp)
4478{
4479 int fd = -1;
4480
4481 TFR(fd = qemu_open(src, flags, 0666));
4482 if (fd == -1) {
20c39760 4483 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4484 }
4485 return fd;
4486}
4487
fd5b036c
PB		 4488static CharDriverState *qmp_chardev_open_file(const char *id,
4489 ChardevBackend *backend,
4490 ChardevReturn *ret,
4491 Error **errp)
ffbdbe59 4492{
32bafa8f 4493 ChardevFile *file = backend->u.file.data;
f194a1ae 4494 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4495 int flags, in = -1, out;
ffbdbe59 4496
31e38a22
OK		 4497 flags = O_WRONLY | O_CREAT | O_BINARY;
4498 if (file->has_append && file->append) {
4499 flags |= O_APPEND;
4500 } else {
4501 flags |= O_TRUNC;
4502 }
4503
ffbdbe59 4504 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4505 if (out < 0) {
ffbdbe59
GH		 4506 return NULL;
4507 }
4508
e859eda5 4509 if (file->has_in) {
ffbdbe59
GH		 4510 flags = O_RDONLY;
4511 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4512 if (in < 0) {
ffbdbe59
GH		 4513 qemu_close(out);
4514 return NULL;
4515 }
4516 }
4517
d0d7708b 4518 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4519}
4520
d809ab95 4521#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4522static CharDriverState *qmp_chardev_open_serial(const char *id,
4523 ChardevBackend *backend,
4524 ChardevReturn *ret,
d36b2b90 4525 Error **errp)
d59044ef 4526{
32bafa8f 4527 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4528 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4529 int fd;
4530
4531 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4532 if (fd < 0) {
d36b2b90 4533 return NULL;
39099991 4534 }
f9e8cacc 4535 qemu_set_nonblock(fd);
d0d7708b 4536 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4537}
6511d396 4538#endif
d36b2b90 4539
d809ab95 4540#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4541static CharDriverState *qmp_chardev_open_parallel(const char *id,
4542 ChardevBackend *backend,
4543 ChardevReturn *ret,
d36b2b90
MA		 4544 Error **errp)
4545{
32bafa8f 4546 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4547 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4548 int fd;
4549
4550 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4551 if (fd < 0) {
d59044ef
GH		 4552 return NULL;
4553 }
d0d7708b 4554 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4555}
d809ab95 4556#endif
d59044ef 4557
ffbdbe59
GH		 4558#endif /* WIN32 */
4559
5dd1f02b
CM		 4560static gboolean socket_reconnect_timeout(gpointer opaque)
4561{
4562 CharDriverState *chr = opaque;
4563 TCPCharDriver *s = chr->opaque;
317856ca 4564 QIOChannelSocket *sioc;
5dd1f02b
CM		 4565
4566 s->reconnect_timer = 0;
4567
4568 if (chr->be_open) {
4569 return false;
4570 }
4571
317856ca
DB		 4572 sioc = qio_channel_socket_new();
4573 qio_channel_socket_connect_async(sioc, s->addr,
4574 qemu_chr_socket_connected,
4575 chr, NULL);
5dd1f02b
CM		 4576
4577 return false;
4578}
4579
dbba8d1b
PB		 4580static CharDriverState *qmp_chardev_open_socket(const char *id,
4581 ChardevBackend *backend,
4582 ChardevReturn *ret,
f6bd5d6e
GH		 4583 Error **errp)
4584{
43ded1a0
CM		 4585 CharDriverState *chr;
4586 TCPCharDriver *s;
32bafa8f 4587 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4588 SocketAddress *addr = sock->addr;
4589 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4590 bool is_listen = sock->has_server ? sock->server : true;
4591 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4592 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4593 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4594 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4595 QIOChannelSocket *sioc = NULL;
43ded1a0 4596
d0d7708b
DB		 4597 chr = qemu_chr_alloc(common, errp);
4598 if (!chr) {
4599 return NULL;
4600 }
2d528d45 4601 s = g_new0(TCPCharDriver, 1);
43ded1a0 4602
130257dc 4603 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4604 s->is_listen = is_listen;
4605 s->is_telnet = is_telnet;
43ded1a0 4606 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4607 if (sock->tls_creds) {
4608 Object *creds;
4609 creds = object_resolve_path_component(
4610 object_get_objects_root(), sock->tls_creds);
4611 if (!creds) {
4612 error_setg(errp, "No TLS credentials with id '%s'",
4613 sock->tls_creds);
4614 goto error;
4615 }
4616 s->tls_creds = (QCryptoTLSCreds *)
4617 object_dynamic_cast(creds,
4618 TYPE_QCRYPTO_TLS_CREDS);
4619 if (!s->tls_creds) {
4620 error_setg(errp, "Object with id '%s' is not TLS credentials",
4621 sock->tls_creds);
4622 goto error;
4623 }
4624 object_ref(OBJECT(s->tls_creds));
4625 if (is_listen) {
4626 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4627 error_setg(errp, "%s",
4628 "Expected TLS credentials for server endpoint");
4629 goto error;
4630 }
4631 } else {
4632 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4633 error_setg(errp, "%s",
4634 "Expected TLS credentials for client endpoint");
4635 goto error;
4636 }
4637 }
4638 }
4639
37f9e0a2 4640 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0 4641
0a73336d
DB		 4642 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
4643 if (s->is_unix) {
4644 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
4645 }
4646
43ded1a0 4647 chr->opaque = s;
d7a04fd7 4648 chr->chr_wait_connected = tcp_chr_wait_connected;
43ded1a0
CM		 4649 chr->chr_write = tcp_chr_write;
4650 chr->chr_sync_read = tcp_chr_sync_read;
72ac8762 4651 chr->chr_free = tcp_chr_free;
7d9d17f7 4652 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4653 chr->get_msgfds = tcp_get_msgfds;
4654 chr->set_msgfds = tcp_set_msgfds;
4655 chr->chr_add_client = tcp_chr_add_client;
4656 chr->chr_add_watch = tcp_chr_add_watch;
4657 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4658 /* be isn't opened until we get a connection */
4659 chr->explicit_be_open = true;
4660
0ff0fad2
DB		 4661 chr->filename = SocketAddress_to_str("disconnected:",
4662 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4663
4664 if (is_listen) {
43ded1a0
CM		 4665 if (is_telnet) {
4666 s->do_telnetopt = 1;
4667 }
5dd1f02b
CM		 4668 } else if (reconnect > 0) {
4669 s->reconnect_time = reconnect;
f6bd5d6e 4670 }
43ded1a0 4671
5008e5b7 4672 if (s->reconnect_time) {
d7a04fd7 4673 sioc = qio_channel_socket_new();
317856ca
DB		 4674 qio_channel_socket_connect_async(sioc, s->addr,
4675 qemu_chr_socket_connected,
4676 chr, NULL);
08b758b4 4677 } else {
d7a04fd7
MAL		 4678 if (s->is_listen) {
4679 sioc = qio_channel_socket_new();
4680 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4681 goto error;
4682 }
4683 s->listen_ioc = sioc;
4684 if (is_waitconnect &&
4685 qemu_chr_wait_connected(chr, errp) < 0) {
4686 goto error;
4687 }
4688 if (!s->ioc) {
4689 s->listen_tag = qio_channel_add_watch(
4690 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4691 tcp_chr_accept, chr, NULL);
4692 }
4693 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4694 goto error;
4695 }
43ded1a0
CM		 4696 }
4697
4698 return chr;
a8fb5427
DB		 4699
4700 error:
08b758b4
DB		 4701 if (sioc) {
4702 object_unref(OBJECT(sioc));
4703 }
a8fb5427
DB		 4704 if (s->tls_creds) {
4705 object_unref(OBJECT(s->tls_creds));
4706 }
4707 g_free(s);
4708 qemu_chr_free_common(chr);
4709 return NULL;
f6bd5d6e
GH		 4710}
4711
e79b80da
PB		 4712static CharDriverState *qmp_chardev_open_udp(const char *id,
4713 ChardevBackend *backend,
4714 ChardevReturn *ret,
08d0ab3f 4715 Error **errp)
3ecc059d 4716{
32bafa8f 4717 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4718 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4719 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4720
9894dc0c 4721 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4722 udp->local, udp->remote,
9894dc0c
DB		 4723 errp) < 0) {
4724 object_unref(OBJECT(sioc));
3ecc059d
GH		 4725 return NULL;
4726 }
9894dc0c 4727 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4728}
4729
0a73336d
DB		 4730
4731bool qemu_chr_has_feature(CharDriverState *chr,
4732 CharDriverFeature feature)
4733{
4734 return test_bit(feature, chr->features);
4735}
4736
4737void qemu_chr_set_feature(CharDriverState *chr,
4738 CharDriverFeature feature)
4739{
4740 return set_bit(feature, chr->features);
4741}
4742
f1a1a356
GH		 4743ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4744 Error **errp)
4745{
4746 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4747 CharDriverState *chr = NULL;
eaeba653 4748 Error *local_err = NULL;
4ca17281
PB		 4749 GSList *i;
4750 CharDriver *cd;
f1a1a356
GH		 4751
4752 chr = qemu_chr_find(id);
4753 if (chr) {
4754 error_setg(errp, "Chardev '%s' already exists", id);
4755 g_free(ret);
4756 return NULL;
4757 }
4758
4ca17281
PB		 4759 for (i = backends; i; i = i->next) {
4760 cd = i->data;
4761
130257dc 4762 if (cd->kind == backend->type) {
4ca17281
PB		 4763 chr = cd->create(id, backend, ret, &local_err);
4764 if (local_err) {
4765 error_propagate(errp, local_err);
4766 goto out_error;
4767 }
4768 break;
4769 }
4770 }
4771
4772 if (chr == NULL) {
1c3af0f4
PB		 4773 assert(!i);
4774 error_setg(errp, "chardev backend not available");
4775 goto out_error;
eaeba653
PB		 4776 }
4777
4778 chr->label = g_strdup(id);
eaeba653 4779 if (!chr->filename) {
130257dc 4780 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4781 }
eaeba653
PB		 4782 if (!chr->explicit_be_open) {
4783 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4784 }
4785 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4786 return ret;
4787
4788out_error:
4789 g_free(ret);
4790 return NULL;
f1a1a356
GH		 4791}
4792
4793void qmp_chardev_remove(const char *id, Error **errp)
4794{
4795 CharDriverState *chr;
4796
4797 chr = qemu_chr_find(id);
8108fd3e 4798 if (chr == NULL) {
f1a1a356
GH		 4799 error_setg(errp, "Chardev '%s' not found", id);
4800 return;
4801 }
a4afa548 4802 if (qemu_chr_is_busy(chr)) {
f1a1a356
GH		 4803 error_setg(errp, "Chardev '%s' is busy", id);
4804 return;
4805 }
33577b47
PD		 4806 if (chr->replay) {
4807 error_setg(errp,
4808 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4809 return;
4810 }
f1a1a356
GH		 4811 qemu_chr_delete(chr);
4812}
d654f34e 4813
aa5cb7f5 4814void qemu_chr_cleanup(void)
c1111a24
MAL		 4815{
4816 CharDriverState *chr, *tmp;
4817
4818 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4819 qemu_chr_delete(chr);
4820 }
4821}
4822
d654f34e
AL		 4823static void register_types(void)
4824{
4ca17281 4825 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4826 qemu_chr_open_null);
e4d50d47 4827 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4828 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4829 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4830 qmp_chardev_open_udp);
e4d50d47 4831 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4832 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4833 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4834 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4835 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4836 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4837#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4838 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4839 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4840 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4841 qemu_chr_parse_serial, qmp_chardev_open_serial);
4842#endif
38bfb1a6 4843#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4844 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4845 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4846 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4847 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4848#endif
c2e75a43 4849#ifdef HAVE_CHARDEV_PTY
4ca17281 4850 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4851 qemu_chr_open_pty);
4852#endif
122e5ed4 4853#ifdef _WIN32
4ca17281 4854 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4855 qemu_chr_open_win_con);
4856#endif
e4d50d47 4857 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4858 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4859 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4860 qemu_chr_open_mux);
c11ed966 4861 /* Bug-compatibility: */
e4d50d47 4862 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4863 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4864 /* this must be done after machine init, since we register FEs with muxes
4865 * as part of realize functions like serial_isa_realizefn when -nographic
4866 * is specified
4867 */
4868 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4869}
4870
4871type_init(register_types);
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