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char: remove explicit_fe_open, use a set_handlers argument
[thirdparty/qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
37f9e0a2 35#include "qapi/clone-visitor.h"
cfb429cb 36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
517b3d40 42#include "qemu/help_option.h"
6f97dba0 43
6f97dba0
AL		 44#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
6f97dba0 50#include <sys/ioctl.h>
24646c7e 51#include <sys/resource.h>
6f97dba0
AL		 52#include <sys/socket.h>
53#include <netinet/in.h>
24646c7e 54#include <net/if.h>
24646c7e 55#include <arpa/inet.h>
6f97dba0
AL		 56#include <netdb.h>
57#include <sys/select.h>
71e72a19 58#ifdef CONFIG_BSD
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
6f97dba0
AL		 72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
c4095726 90#define TCP_MAX_FDS 16
9bd7854e 91
6dfa8298
MAL		 92typedef struct MuxDriver MuxDriver;
93
cfb429cb
CM		 94/***********************************************************/
95/* Socket address helpers */
cfb429cb 96
0ff0fad2
DB		 97static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
98 bool is_listen, bool is_telnet)
16cc4ffe 99{
130257dc 100 switch (addr->type) {
16cc4ffe 101 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 102 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 103 is_telnet ? "telnet" : "tcp",
104 addr->u.inet.data->host,
105 addr->u.inet.data->port,
106 is_listen ? ",server" : "");
16cc4ffe
CM		 107 break;
108 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 109 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 110 addr->u.q_unix.data->path,
0ff0fad2 111 is_listen ? ",server" : "");
16cc4ffe
CM		 112 break;
113 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 114 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 115 is_listen ? ",server" : "");
16cc4ffe
CM		 116 break;
117 default:
118 abort();
119 }
120}
121
0ff0fad2
DB		 122static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
123 struct sockaddr_storage *ps, socklen_t ps_len,
124 bool is_listen, bool is_telnet)
16cc4ffe 125{
01ca519f
CM		 126 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
127 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 128 const char *left = "", *right = "";
129
130 switch (ss->ss_family) {
131#ifndef _WIN32
132 case AF_UNIX:
0ff0fad2
DB		 133 return g_strdup_printf("unix:%s%s",
134 ((struct sockaddr_un *)(ss))->sun_path,
135 is_listen ? ",server" : "");
16cc4ffe
CM		 136#endif
137 case AF_INET6:
138 left = "[";
139 right = "]";
140 /* fall through */
141 case AF_INET:
01ca519f
CM		 142 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
143 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
144 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
145 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 146 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
147 is_telnet ? "telnet" : "tcp",
148 left, shost, right, sserv,
149 is_listen ? ",server" : "",
150 left, phost, right, pserv);
16cc4ffe
CM		 151
152 default:
0ff0fad2 153 return g_strdup_printf("unknown");
16cc4ffe
CM		 154 }
155}
156
6f97dba0
AL		 157/***********************************************************/
158/* character device */
159
72cf2d4f
BS		 160static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
161 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 162
d0d7708b
DB		 163static void qemu_chr_free_common(CharDriverState *chr);
164
165CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 166{
167 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 168 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 169
170 if (backend->has_logfile) {
171 int flags = O_WRONLY | O_CREAT;
172 if (backend->has_logappend &&
173 backend->logappend) {
174 flags |= O_APPEND;
175 } else {
176 flags |= O_TRUNC;
177 }
178 chr->logfd = qemu_open(backend->logfile, flags, 0666);
179 if (chr->logfd < 0) {
180 error_setg_errno(errp, errno,
181 "Unable to open logfile %s",
182 backend->logfile);
183 g_free(chr);
184 return NULL;
185 }
186 } else {
187 chr->logfd = -1;
188 }
189
db39fcf1
PB		 190 return chr;
191}
192
a425d23f 193void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 194{
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
a4afa548 811static int mux_chr_new_fe(CharDriverState *chr, CharBackend *be, Error **errp)
6dfa8298
MAL		 812{
813 MuxDriver *d = chr->opaque;
814
815 if (d->mux_cnt >= MAX_MUX) {
816 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
817 return -1;
818 }
819
a4afa548
MAL		 820 d->backends[d->mux_cnt] = be;
821
6dfa8298
MAL		 822 return d->mux_cnt++;
823}
824
825static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context)
826{
827 MuxDriver *d = chr->opaque;
828
829 /* Fix up the real driver with mux routines */
ecb672d1
MAL		 830 qemu_chr_fe_set_handlers(&d->chr,
831 mux_chr_can_read,
832 mux_chr_read,
833 mux_chr_event,
834 chr,
39ab61c6 835 context, true);
6dfa8298
MAL		 836}
837
838static void mux_set_focus(MuxDriver *d, int focus)
839{
840 assert(focus >= 0);
841 assert(focus < d->mux_cnt);
842
843 if (d->focus != -1) {
844 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
845 }
846
847 d->focus = focus;
848 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
849}
850
3c0e5a4a
PB		 851static CharDriverState *qemu_chr_open_mux(const char *id,
852 ChardevBackend *backend,
853 ChardevReturn *ret, Error **errp)
6f97dba0 854{
32bafa8f 855 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 856 CharDriverState *chr, *drv;
6f97dba0 857 MuxDriver *d;
f194a1ae 858 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 859
3c0e5a4a
PB		 860 drv = qemu_chr_find(mux->chardev);
861 if (drv == NULL) {
862 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
863 return NULL;
864 }
865
d0d7708b
DB		 866 chr = qemu_chr_alloc(common, errp);
867 if (!chr) {
868 return NULL;
869 }
2d528d45 870 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 871
872 chr->opaque = d;
799f1f23 873 d->focus = -1;
72ac8762 874 chr->chr_free = mux_chr_free;
6f97dba0 875 chr->chr_write = mux_chr_write;
6f97dba0 876 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 877 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 878 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 879 if (drv->chr_add_watch) {
880 chr->chr_add_watch = mux_chr_add_watch;
881 }
7b7ab18d
MR		 882 /* only default to opened state if we've realized the initial
883 * set of muxes
884 */
885 chr->explicit_be_open = muxes_realized ? 0 : 1;
886 chr->is_mux = 1;
5345fdb4 887 if (!qemu_chr_fe_init(&d->chr, drv, errp)) {
ecb672d1
MAL		 888 qemu_chr_free(chr);
889 return NULL;
890 }
73cdf3f2 891
6f97dba0
AL		 892 return chr;
893}
894
94a40fc5
MAL		 895CharDriverState *qemu_chr_fe_get_driver(CharBackend *be)
896{
897 return be->chr;
898}
899
900bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp)
901{
902 int tag = 0;
903
904 if (s->is_mux) {
a4afa548 905 tag = mux_chr_new_fe(s, b, errp);
94a40fc5
MAL		 906 if (tag < 0) {
907 return false;
908 }
a4afa548
MAL		 909 } else {
910 s->be = b;
94a40fc5
MAL		 911 }
912
913 b->tag = tag;
914 b->chr = s;
915
916 return true;
917}
918
a4afa548
MAL		 919static bool qemu_chr_is_busy(CharDriverState *s)
920{
921 if (s->is_mux) {
922 MuxDriver *d = s->opaque;
923 return d->mux_cnt >= 0;
924 } else {
925 return s->be != NULL;
926 }
927}
928
c39860e6
MAL		 929void qemu_chr_fe_deinit(CharBackend *b)
930{
931 assert(b);
932
933 if (b->chr) {
39ab61c6 934 qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true);
c39860e6 935 b->chr->avail_connections++;
a4afa548
MAL		 936 b->chr->be = NULL;
937 if (b->chr->is_mux) {
938 MuxDriver *d = b->chr->opaque;
939 d->backends[b->tag] = NULL;
940 }
c39860e6
MAL		 941 b->chr = NULL;
942 }
943}
944
94a40fc5
MAL		 945void qemu_chr_fe_set_handlers(CharBackend *b,
946 IOCanReadHandler *fd_can_read,
947 IOReadHandler *fd_read,
948 IOEventHandler *fd_event,
949 void *opaque,
39ab61c6
MAL		 950 GMainContext *context,
951 bool set_open)
94a40fc5 952{
386f07d1
MAL		 953 CharDriverState *s;
954 int fe_open;
955
956 s = b->chr;
957 if (!s) {
94a40fc5
MAL		 958 return;
959 }
960
386f07d1
MAL		 961 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
962 fe_open = 0;
963 remove_fd_in_watch(s);
964 } else {
965 fe_open = 1;
966 }
a4afa548
MAL		 967 b->chr_can_read = fd_can_read;
968 b->chr_read = fd_read;
969 b->chr_event = fd_event;
970 b->opaque = opaque;
386f07d1 971 if (s->chr_update_read_handler) {
a4afa548 972 s->chr_update_read_handler(s, context);
386f07d1
MAL		 973 }
974
39ab61c6 975 if (set_open) {
386f07d1
MAL		 976 qemu_chr_fe_set_open(b, fe_open);
977 }
94a40fc5 978
386f07d1
MAL		 979 if (fe_open) {
980 qemu_chr_fe_take_focus(b);
981 /* We're connecting to an already opened device, so let's make sure we
982 also get the open event */
983 if (s->be_open) {
984 qemu_chr_be_generic_open(s);
985 }
986 }
987
988 if (s->is_mux) {
989 mux_chr_set_handlers(s, context);
94a40fc5
MAL		 990 }
991}
992
993void qemu_chr_fe_take_focus(CharBackend *b)
994{
fa394ed6
MAL		 995 if (!b->chr) {
996 return;
997 }
998
94a40fc5
MAL		 999 if (b->chr->is_mux) {
1000 mux_set_focus(b->chr->opaque, b->tag);
1001 }
1002}
6f97dba0 1003
96c63847
AL		 1004typedef struct IOWatchPoll
1005{
d185c094
PB		 1006 GSource parent;
1007
9894dc0c 1008 QIOChannel *ioc;
96c63847 1009 GSource *src;
96c63847
AL		 1010
1011 IOCanReadHandler *fd_can_read;
1e885b25 1012 GSourceFunc fd_read;
96c63847 1013 void *opaque;
e92aa36a 1014 GMainContext *context;
96c63847
AL		 1015} IOWatchPoll;
1016
96c63847
AL		 1017static IOWatchPoll *io_watch_poll_from_source(GSource *source)
1018{
d185c094 1019 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 1020}
1021
e92aa36a
ZC		 1022static gboolean io_watch_poll_prepare(GSource *source,
1023 gint *timeout_)
96c63847
AL		 1024{
1025 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 1026 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 1027 bool was_active = iwp->src != NULL;
d185c094 1028 if (was_active == now_active) {
96c63847
AL		 1029 return FALSE;
1030 }
1031
d185c094 1032 if (now_active) {
9894dc0c
DB		 1033 iwp->src = qio_channel_create_watch(
1034 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 1035 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
e92aa36a 1036 g_source_attach(iwp->src, iwp->context);
d185c094 1037 } else {
1e885b25
PB		 1038 g_source_destroy(iwp->src);
1039 g_source_unref(iwp->src);
1040 iwp->src = NULL;
d185c094
PB		 1041 }
1042 return FALSE;
96c63847
AL		 1043}
1044
1045static gboolean io_watch_poll_check(GSource *source)
1046{
d185c094 1047 return FALSE;
96c63847
AL		 1048}
1049
1050static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
1051 gpointer user_data)
1052{
d185c094 1053 abort();
96c63847
AL		 1054}
1055
1056static void io_watch_poll_finalize(GSource *source)
1057{
2b316774
PB		 1058 /* Due to a glib bug, removing the last reference to a source
1059 * inside a finalize callback causes recursive locking (and a
1060 * deadlock). This is not a problem inside other callbacks,
1061 * including dispatch callbacks, so we call io_remove_watch_poll
1062 * to remove this source. At this point, iwp->src must
1063 * be NULL, or we would leak it.
1064 *
1065 * This would be solved much more elegantly by child sources,
1066 * but we support older glib versions that do not have them.
1067 */
96c63847 1068 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 1069 assert(iwp->src == NULL);
96c63847
AL		 1070}
1071
1072static GSourceFuncs io_watch_poll_funcs = {
1073 .prepare = io_watch_poll_prepare,
1074 .check = io_watch_poll_check,
1075 .dispatch = io_watch_poll_dispatch,
1076 .finalize = io_watch_poll_finalize,
1077};
1078
1079/* Can only be used for read */
9894dc0c 1080static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 1081 IOCanReadHandler *fd_can_read,
9894dc0c 1082 QIOChannelFunc fd_read,
e92aa36a
ZC		 1083 gpointer user_data,
1084 GMainContext *context)
96c63847
AL		 1085{
1086 IOWatchPoll *iwp;
0ca5aa4f 1087 int tag;
96c63847 1088
e92aa36a
ZC		 1089 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
1090 sizeof(IOWatchPoll));
96c63847
AL		 1091 iwp->fd_can_read = fd_can_read;
1092 iwp->opaque = user_data;
9894dc0c 1093 iwp->ioc = ioc;
1e885b25
PB		 1094 iwp->fd_read = (GSourceFunc) fd_read;
1095 iwp->src = NULL;
e92aa36a 1096 iwp->context = context;
96c63847 1097
e92aa36a 1098 tag = g_source_attach(&iwp->parent, context);
0ca5aa4f
PB		 1099 g_source_unref(&iwp->parent);
1100 return tag;
96c63847
AL		 1101}
1102
2b316774
PB		 1103static void io_remove_watch_poll(guint tag)
1104{
1105 GSource *source;
1106 IOWatchPoll *iwp;
1107
1108 g_return_if_fail (tag > 0);
1109
1110 source = g_main_context_find_source_by_id(NULL, tag);
1111 g_return_if_fail (source != NULL);
1112
1113 iwp = io_watch_poll_from_source(source);
1114 if (iwp->src) {
1115 g_source_destroy(iwp->src);
1116 g_source_unref(iwp->src);
1117 iwp->src = NULL;
1118 }
1119 g_source_destroy(&iwp->parent);
1120}
1121
26da70c7
AS		 1122static void remove_fd_in_watch(CharDriverState *chr)
1123{
1124 if (chr->fd_in_tag) {
1125 io_remove_watch_poll(chr->fd_in_tag);
1126 chr->fd_in_tag = 0;
1127 }
1128}
1129
96c63847 1130
9894dc0c
DB		 1131static int io_channel_send_full(QIOChannel *ioc,
1132 const void *buf, size_t len,
1133 int *fds, size_t nfds)
76a9644b 1134{
9894dc0c 1135 size_t offset = 0;
76a9644b 1136
9894dc0c
DB		 1137 while (offset < len) {
1138 ssize_t ret = 0;
1139 struct iovec iov = { .iov_base = (char *)buf + offset,
1140 .iov_len = len - offset };
1141
1142 ret = qio_channel_writev_full(
1143 ioc, &iov, 1,
1144 fds, nfds, NULL);
1145 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 1146 if (offset) {
1147 return offset;
1148 }
76a9644b 1149
e046fb44
DB		 1150 errno = EAGAIN;
1151 return -1;
1152 } else if (ret < 0) {
9894dc0c
DB		 1153 errno = EINVAL;
1154 return -1;
1155 }
76a9644b 1156
9894dc0c
DB		 1157 offset += ret;
1158 }
76a9644b 1159
9894dc0c 1160 return offset;
76a9644b
AL		 1161}
1162
9894dc0c 1163
0ff0fad2 1164#ifndef _WIN32
9894dc0c 1165static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 1166{
9894dc0c 1167 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 1168}
96c63847 1169
44ab9ed4 1170
a29753f8
AL		 1171typedef struct FDCharDriver {
1172 CharDriverState *chr;
9894dc0c 1173 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 1174 int max_size;
1175} FDCharDriver;
1176
9005b2a7 1177/* Called with chr_write_lock held. */
6f97dba0
AL		 1178static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1179{
1180 FDCharDriver *s = chr->opaque;
a29753f8 1181
9894dc0c 1182 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1183}
1184
9894dc0c 1185static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1186{
1187 CharDriverState *chr = opaque;
1188 FDCharDriver *s = chr->opaque;
a29753f8 1189 int len;
9bd7854e 1190 uint8_t buf[READ_BUF_LEN];
9894dc0c 1191 ssize_t ret;
6f97dba0
AL		 1192
1193 len = sizeof(buf);
a29753f8 1194 if (len > s->max_size) {
6f97dba0 1195 len = s->max_size;
a29753f8
AL		 1196 }
1197 if (len == 0) {
cdbf6e16 1198 return TRUE;
a29753f8
AL		 1199 }
1200
9894dc0c
DB		 1201 ret = qio_channel_read(
1202 chan, (gchar *)buf, len, NULL);
1203 if (ret == 0) {
26da70c7 1204 remove_fd_in_watch(chr);
a425d23f 1205 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1206 return FALSE;
6f97dba0 1207 }
9894dc0c
DB		 1208 if (ret > 0) {
1209 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1210 }
a29753f8
AL		 1211
1212 return TRUE;
1213}
1214
1215static int fd_chr_read_poll(void *opaque)
1216{
1217 CharDriverState *chr = opaque;
1218 FDCharDriver *s = chr->opaque;
1219
1220 s->max_size = qemu_chr_be_can_write(chr);
1221 return s->max_size;
6f97dba0
AL		 1222}
1223
23673ca7
AL		 1224static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1225{
1226 FDCharDriver *s = chr->opaque;
9894dc0c 1227 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1228}
1229
e92aa36a 1230static void fd_chr_update_read_handler(CharDriverState *chr,
a4afa548 1231 GMainContext *context)
6f97dba0
AL		 1232{
1233 FDCharDriver *s = chr->opaque;
1234
26da70c7 1235 remove_fd_in_watch(chr);
9894dc0c
DB		 1236 if (s->ioc_in) {
1237 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1238 fd_chr_read_poll,
e92aa36a
ZC		 1239 fd_chr_read, chr,
1240 context);
6f97dba0
AL		 1241 }
1242}
1243
72ac8762 1244static void fd_chr_free(struct CharDriverState *chr)
6f97dba0
AL		 1245{
1246 FDCharDriver *s = chr->opaque;
1247
26da70c7 1248 remove_fd_in_watch(chr);
9894dc0c
DB		 1249 if (s->ioc_in) {
1250 object_unref(OBJECT(s->ioc_in));
a29753f8 1251 }
9894dc0c
DB		 1252 if (s->ioc_out) {
1253 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1254 }
1255
7267c094 1256 g_free(s);
a425d23f 1257 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1258}
1259
1260/* open a character device to a unix fd */
d0d7708b
DB		 1261static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1262 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1263{
1264 CharDriverState *chr;
1265 FDCharDriver *s;
1266
d0d7708b
DB		 1267 chr = qemu_chr_alloc(backend, errp);
1268 if (!chr) {
1269 return NULL;
1270 }
2d528d45 1271 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1272 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1273 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1274 qemu_set_nonblock(fd_out);
a29753f8 1275 s->chr = chr;
6f97dba0 1276 chr->opaque = s;
23673ca7 1277 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1278 chr->chr_write = fd_chr_write;
1279 chr->chr_update_read_handler = fd_chr_update_read_handler;
72ac8762 1280 chr->chr_free = fd_chr_free;
6f97dba0 1281
6f97dba0
AL		 1282 return chr;
1283}
1284
20cbe7a2
PB		 1285static CharDriverState *qemu_chr_open_pipe(const char *id,
1286 ChardevBackend *backend,
1287 ChardevReturn *ret,
1288 Error **errp)
6f97dba0 1289{
32bafa8f 1290 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1291 int fd_in, fd_out;
0ff0fad2
DB		 1292 char *filename_in;
1293 char *filename_out;
548cbb36 1294 const char *filename = opts->device;
f194a1ae 1295 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1296
0ff0fad2
DB		 1297
1298 filename_in = g_strdup_printf("%s.in", filename);
1299 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1300 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1301 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1302 g_free(filename_in);
1303 g_free(filename_out);
6f97dba0
AL		 1304 if (fd_in < 0 || fd_out < 0) {
1305 if (fd_in >= 0)
1306 close(fd_in);
1307 if (fd_out >= 0)
1308 close(fd_out);
b181e047 1309 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1310 if (fd_in < 0) {
20cbe7a2 1311 error_setg_file_open(errp, errno, filename);
1f51470d 1312 return NULL;
a89dd6c3 1313 }
6f97dba0 1314 }
d0d7708b 1315 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1316}
1317
6f97dba0
AL		 1318/* init terminal so that we can grab keys */
1319static struct termios oldtty;
1320static int old_fd0_flags;
c88930a6 1321static bool stdio_in_use;
bb002513 1322static bool stdio_allow_signal;
e76d4420
GH		 1323static bool stdio_echo_state;
1324
1325static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1326
1327static void term_exit(void)
1328{
1329 tcsetattr (0, TCSANOW, &oldtty);
1330 fcntl(0, F_SETFL, old_fd0_flags);
1331}
1332
e76d4420
GH		 1333static void term_stdio_handler(int sig)
1334{
1335 /* restore echo after resume from suspend. */
1336 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1337}
1338
bb002513 1339static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1340{
1341 struct termios tty;
1342
e76d4420 1343 stdio_echo_state = echo;
0369364b 1344 tty = oldtty;
bb002513
PB		 1345 if (!echo) {
1346 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1347 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1348 tty.c_oflag |= OPOST;
1349 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1350 tty.c_cflag &= ~(CSIZE|PARENB);
1351 tty.c_cflag |= CS8;
1352 tty.c_cc[VMIN] = 1;
1353 tty.c_cc[VTIME] = 0;
1354 }
bb002513 1355 if (!stdio_allow_signal)
6f97dba0 1356 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1357
1358 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1359}
1360
72ac8762 1361static void qemu_chr_free_stdio(struct CharDriverState *chr)
6f97dba0
AL		 1362{
1363 term_exit();
72ac8762 1364 fd_chr_free(chr);
6f97dba0
AL		 1365}
1366
8c84b25d
PB		 1367static CharDriverState *qemu_chr_open_stdio(const char *id,
1368 ChardevBackend *backend,
1369 ChardevReturn *ret,
1370 Error **errp)
6f97dba0 1371{
32bafa8f 1372 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1373 CharDriverState *chr;
e76d4420 1374 struct sigaction act;
f194a1ae 1375 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1376
ab51b1d5 1377 if (is_daemonized()) {
8c84b25d 1378 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1379 return NULL;
1380 }
c88930a6
LL		 1381
1382 if (stdio_in_use) {
8c84b25d
PB		 1383 error_setg(errp, "cannot use stdio by multiple character devices");
1384 return NULL;
c88930a6
LL		 1385 }
1386
1387 stdio_in_use = true;
ed7a1540 1388 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1389 tcgetattr(0, &oldtty);
4ff12bdb 1390 qemu_set_nonblock(0);
ed7a1540 1391 atexit(term_exit);
0369364b 1392
e76d4420
GH		 1393 memset(&act, 0, sizeof(act));
1394 act.sa_handler = term_stdio_handler;
1395 sigaction(SIGCONT, &act, NULL);
1396
d0d7708b 1397 chr = qemu_chr_open_fd(0, 1, common, errp);
71200fb9
LM		 1398 if (!chr) {
1399 return NULL;
1400 }
72ac8762 1401 chr->chr_free = qemu_chr_free_stdio;
bb002513 1402 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1403 if (opts->has_signal) {
1404 stdio_allow_signal = opts->signal;
1405 }
5345fdb4 1406 qemu_chr_set_echo_stdio(chr, false);
6f97dba0 1407
1f51470d 1408 return chr;
6f97dba0
AL		 1409}
1410
6f97dba0 1411#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1412 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1413 || defined(__GLIBC__)
6f97dba0 1414
d809ab95
PB		 1415#define HAVE_CHARDEV_SERIAL 1
1416#define HAVE_CHARDEV_PTY 1
e551498e 1417
6f97dba0 1418typedef struct {
9894dc0c 1419 QIOChannel *ioc;
6f97dba0 1420 int read_bytes;
9005b2a7
PB		 1421
1422 /* Protected by the CharDriverState chr_write_lock. */
1423 int connected;
8aa33caf 1424 guint timer_tag;
7b3621f4 1425 guint open_tag;
6f97dba0
AL		 1426} PtyCharDriver;
1427
9005b2a7 1428static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1429static void pty_chr_state(CharDriverState *chr, int connected);
1430
8aa33caf
AL		 1431static gboolean pty_chr_timer(gpointer opaque)
1432{
1433 struct CharDriverState *chr = opaque;
1434 PtyCharDriver *s = chr->opaque;
1435
9005b2a7 1436 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1437 s->timer_tag = 0;
7b3621f4 1438 s->open_tag = 0;
b0d768c3
GH		 1439 if (!s->connected) {
1440 /* Next poll ... */
9005b2a7 1441 pty_chr_update_read_handler_locked(chr);
b0d768c3 1442 }
9005b2a7 1443 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1444 return FALSE;
1445}
1446
9005b2a7 1447/* Called with chr_write_lock held. */
8aa33caf
AL		 1448static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1449{
1450 PtyCharDriver *s = chr->opaque;
1451
1452 if (s->timer_tag) {
1453 g_source_remove(s->timer_tag);
1454 s->timer_tag = 0;
1455 }
1456
1457 if (ms == 1000) {
1458 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1459 } else {
1460 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1461 }
1462}
1463
9005b2a7
PB		 1464/* Called with chr_write_lock held. */
1465static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1466{
1467 PtyCharDriver *s = chr->opaque;
1468 GPollFD pfd;
c1f24489 1469 int rc;
9894dc0c 1470 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1471
9894dc0c 1472 pfd.fd = fioc->fd;
1bb7fe72
PB		 1473 pfd.events = G_IO_OUT;
1474 pfd.revents = 0;
c1f24489
PB		 1475 do {
1476 rc = g_poll(&pfd, 1, 0);
1477 } while (rc == -1 && errno == EINTR);
1478 assert(rc >= 0);
1479
1bb7fe72
PB		 1480 if (pfd.revents & G_IO_HUP) {
1481 pty_chr_state(chr, 0);
1482 } else {
1483 pty_chr_state(chr, 1);
1484 }
1485}
1486
e92aa36a 1487static void pty_chr_update_read_handler(CharDriverState *chr,
a4afa548 1488 GMainContext *context)
9005b2a7
PB		 1489{
1490 qemu_mutex_lock(&chr->chr_write_lock);
1491 pty_chr_update_read_handler_locked(chr);
1492 qemu_mutex_unlock(&chr->chr_write_lock);
1493}
1494
1495/* Called with chr_write_lock held. */
6f97dba0
AL		 1496static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1497{
1498 PtyCharDriver *s = chr->opaque;
1499
1500 if (!s->connected) {
1501 /* guest sends data, check for (re-)connect */
9005b2a7 1502 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1503 if (!s->connected) {
1504 return 0;
1505 }
6f97dba0 1506 }
9894dc0c 1507 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1508}
1509
e6a87ed8
AL		 1510static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1511{
1512 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1513 if (!s->connected) {
1514 return NULL;
1515 }
9894dc0c 1516 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1517}
1518
6f97dba0
AL		 1519static int pty_chr_read_poll(void *opaque)
1520{
1521 CharDriverState *chr = opaque;
1522 PtyCharDriver *s = chr->opaque;
1523
909cda12 1524 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1525 return s->read_bytes;
1526}
1527
9894dc0c 1528static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1529{
1530 CharDriverState *chr = opaque;
1531 PtyCharDriver *s = chr->opaque;
9894dc0c 1532 gsize len;
9bd7854e 1533 uint8_t buf[READ_BUF_LEN];
9894dc0c 1534 ssize_t ret;
6f97dba0
AL		 1535
1536 len = sizeof(buf);
1537 if (len > s->read_bytes)
1538 len = s->read_bytes;
cdbf6e16
PB		 1539 if (len == 0) {
1540 return TRUE;
1541 }
9894dc0c
DB		 1542 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1543 if (ret <= 0) {
6f97dba0 1544 pty_chr_state(chr, 0);
093d3a20
AL		 1545 return FALSE;
1546 } else {
6f97dba0 1547 pty_chr_state(chr, 1);
9894dc0c 1548 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1549 }
093d3a20 1550 return TRUE;
6f97dba0
AL		 1551}
1552
7b3621f4
PB		 1553static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1554{
1555 CharDriverState *chr = opaque;
1556 PtyCharDriver *s = chr->opaque;
1557
1558 s->open_tag = 0;
1559 qemu_chr_be_generic_open(chr);
1560 return FALSE;
1561}
1562
9005b2a7 1563/* Called with chr_write_lock held. */
6f97dba0
AL		 1564static void pty_chr_state(CharDriverState *chr, int connected)
1565{
1566 PtyCharDriver *s = chr->opaque;
1567
1568 if (!connected) {
7b3621f4
PB		 1569 if (s->open_tag) {
1570 g_source_remove(s->open_tag);
1571 s->open_tag = 0;
1572 }
26da70c7 1573 remove_fd_in_watch(chr);
6f97dba0 1574 s->connected = 0;
6f97dba0
AL		 1575 /* (re-)connect poll interval for idle guests: once per second.
1576 * We check more frequently in case the guests sends data to
1577 * the virtual device linked to our pty. */
8aa33caf 1578 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1579 } else {
85a67692
PB		 1580 if (s->timer_tag) {
1581 g_source_remove(s->timer_tag);
1582 s->timer_tag = 0;
1583 }
1584 if (!s->connected) {
7b3621f4 1585 g_assert(s->open_tag == 0);
85a67692 1586 s->connected = 1;
7b3621f4 1587 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1588 }
1589 if (!chr->fd_in_tag) {
9894dc0c
DB		 1590 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1591 pty_chr_read_poll,
e92aa36a
ZC		 1592 pty_chr_read,
1593 chr, NULL);
85a67692 1594 }
6f97dba0
AL		 1595 }
1596}
1597
72ac8762 1598static void pty_chr_free(struct CharDriverState *chr)
6f97dba0
AL		 1599{
1600 PtyCharDriver *s = chr->opaque;
1601
7b3621f4
PB		 1602 qemu_mutex_lock(&chr->chr_write_lock);
1603 pty_chr_state(chr, 0);
9894dc0c 1604 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1605 if (s->timer_tag) {
1606 g_source_remove(s->timer_tag);
910b6368 1607 s->timer_tag = 0;
8aa33caf 1608 }
7b3621f4 1609 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1610 g_free(s);
a425d23f 1611 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1612}
1613
e68c5958 1614static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1615 ChardevBackend *backend,
1616 ChardevReturn *ret,
1617 Error **errp)
6f97dba0
AL		 1618{
1619 CharDriverState *chr;
1620 PtyCharDriver *s;
e68c5958 1621 int master_fd, slave_fd;
6f97dba0 1622 char pty_name[PATH_MAX];
32bafa8f 1623 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1624
4efeabbb
MT		 1625 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1626 if (master_fd < 0) {
c2e75a43 1627 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1628 return NULL;
6f97dba0
AL		 1629 }
1630
837a183f 1631 close(slave_fd);
fac6688a 1632 qemu_set_nonblock(master_fd);
6f97dba0 1633
d0d7708b
DB		 1634 chr = qemu_chr_alloc(common, errp);
1635 if (!chr) {
1636 close(master_fd);
1637 return NULL;
1638 }
a4e26048 1639
4efeabbb
MT		 1640 chr->filename = g_strdup_printf("pty:%s", pty_name);
1641 ret->pty = g_strdup(pty_name);
e68c5958 1642 ret->has_pty = true;
58650218 1643
e68c5958 1644 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1645 pty_name, id);
6f97dba0 1646
2d528d45 1647 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1648 chr->opaque = s;
1649 chr->chr_write = pty_chr_write;
1650 chr->chr_update_read_handler = pty_chr_update_read_handler;
72ac8762 1651 chr->chr_free = pty_chr_free;
e6a87ed8 1652 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1653 chr->explicit_be_open = true;
6f97dba0 1654
9894dc0c 1655 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1656 s->timer_tag = 0;
6f97dba0 1657
1f51470d 1658 return chr;
6f97dba0
AL		 1659}
1660
1661static void tty_serial_init(int fd, int speed,
1662 int parity, int data_bits, int stop_bits)
1663{
1664 struct termios tty;
1665 speed_t spd;
1666
1667#if 0
1668 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1669 speed, parity, data_bits, stop_bits);
1670#endif
1671 tcgetattr (fd, &tty);
1672
45eea13b
SW		 1673#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1674 speed = speed * 10 / 11;
1675 do {
1676 check_speed(50);
1677 check_speed(75);
1678 check_speed(110);
1679 check_speed(134);
1680 check_speed(150);
1681 check_speed(200);
1682 check_speed(300);
1683 check_speed(600);
1684 check_speed(1200);
1685 check_speed(1800);
1686 check_speed(2400);
1687 check_speed(4800);
1688 check_speed(9600);
1689 check_speed(19200);
1690 check_speed(38400);
1691 /* Non-Posix values follow. They may be unsupported on some systems. */
1692 check_speed(57600);
1693 check_speed(115200);
1694#ifdef B230400
1695 check_speed(230400);
1696#endif
1697#ifdef B460800
1698 check_speed(460800);
1699#endif
1700#ifdef B500000
1701 check_speed(500000);
1702#endif
1703#ifdef B576000
1704 check_speed(576000);
1705#endif
1706#ifdef B921600
1707 check_speed(921600);
1708#endif
1709#ifdef B1000000
1710 check_speed(1000000);
1711#endif
1712#ifdef B1152000
1713 check_speed(1152000);
1714#endif
1715#ifdef B1500000
1716 check_speed(1500000);
1717#endif
1718#ifdef B2000000
1719 check_speed(2000000);
1720#endif
1721#ifdef B2500000
1722 check_speed(2500000);
1723#endif
1724#ifdef B3000000
1725 check_speed(3000000);
1726#endif
1727#ifdef B3500000
1728 check_speed(3500000);
1729#endif
1730#ifdef B4000000
1731 check_speed(4000000);
1732#endif
6f97dba0 1733 spd = B115200;
45eea13b 1734 } while (0);
6f97dba0
AL		 1735
1736 cfsetispeed(&tty, spd);
1737 cfsetospeed(&tty, spd);
1738
1739 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1740 |INLCR|IGNCR|ICRNL|IXON);
1741 tty.c_oflag |= OPOST;
1742 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1743 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1744 switch(data_bits) {
1745 default:
1746 case 8:
1747 tty.c_cflag |= CS8;
1748 break;
1749 case 7:
1750 tty.c_cflag |= CS7;
1751 break;
1752 case 6:
1753 tty.c_cflag |= CS6;
1754 break;
1755 case 5:
1756 tty.c_cflag |= CS5;
1757 break;
1758 }
1759 switch(parity) {
1760 default:
1761 case 'N':
1762 break;
1763 case 'E':
1764 tty.c_cflag |= PARENB;
1765 break;
1766 case 'O':
1767 tty.c_cflag |= PARENB | PARODD;
1768 break;
1769 }
1770 if (stop_bits == 2)
1771 tty.c_cflag |= CSTOPB;
1772
1773 tcsetattr (fd, TCSANOW, &tty);
1774}
1775
1776static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1777{
1778 FDCharDriver *s = chr->opaque;
9894dc0c 1779 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1780
1781 switch(cmd) {
1782 case CHR_IOCTL_SERIAL_SET_PARAMS:
1783 {
1784 QEMUSerialSetParams *ssp = arg;
9894dc0c 1785 tty_serial_init(fioc->fd,
a29753f8 1786 ssp->speed, ssp->parity,
6f97dba0
AL		 1787 ssp->data_bits, ssp->stop_bits);
1788 }
1789 break;
1790 case CHR_IOCTL_SERIAL_SET_BREAK:
1791 {
1792 int enable = *(int *)arg;
a29753f8 1793 if (enable) {
9894dc0c 1794 tcsendbreak(fioc->fd, 1);
a29753f8 1795 }
6f97dba0
AL		 1796 }
1797 break;
1798 case CHR_IOCTL_SERIAL_GET_TIOCM:
1799 {
1800 int sarg = 0;
1801 int *targ = (int *)arg;
9894dc0c 1802 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1803 *targ = 0;
b4abdfa4 1804 if (sarg & TIOCM_CTS)
6f97dba0 1805 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1806 if (sarg & TIOCM_CAR)
6f97dba0 1807 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1808 if (sarg & TIOCM_DSR)
6f97dba0 1809 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1810 if (sarg & TIOCM_RI)
6f97dba0 1811 *targ |= CHR_TIOCM_RI;
b4abdfa4 1812 if (sarg & TIOCM_DTR)
6f97dba0 1813 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1814 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1815 *targ |= CHR_TIOCM_RTS;
1816 }
1817 break;
1818 case CHR_IOCTL_SERIAL_SET_TIOCM:
1819 {
1820 int sarg = *(int *)arg;
1821 int targ = 0;
9894dc0c 1822 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1823 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1824 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1825 if (sarg & CHR_TIOCM_CTS)
1826 targ |= TIOCM_CTS;
1827 if (sarg & CHR_TIOCM_CAR)
1828 targ |= TIOCM_CAR;
1829 if (sarg & CHR_TIOCM_DSR)
1830 targ |= TIOCM_DSR;
1831 if (sarg & CHR_TIOCM_RI)
1832 targ |= TIOCM_RI;
1833 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1834 targ |= TIOCM_DTR;
b4abdfa4 1835 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1836 targ |= TIOCM_RTS;
9894dc0c 1837 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1838 }
1839 break;
1840 default:
1841 return -ENOTSUP;
1842 }
1843 return 0;
1844}
1845
72ac8762 1846static void qemu_chr_free_tty(CharDriverState *chr)
4266a134 1847{
72ac8762 1848 fd_chr_free(chr);
4266a134
DA		 1849}
1850
d0d7708b
DB		 1851static CharDriverState *qemu_chr_open_tty_fd(int fd,
1852 ChardevCommon *backend,
1853 Error **errp)
d59044ef
GH		 1854{
1855 CharDriverState *chr;
1856
1857 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1858 chr = qemu_chr_open_fd(fd, fd, backend, errp);
71200fb9
LM		 1859 if (!chr) {
1860 return NULL;
1861 }
d59044ef 1862 chr->chr_ioctl = tty_serial_ioctl;
72ac8762 1863 chr->chr_free = qemu_chr_free_tty;
d59044ef
GH		 1864 return chr;
1865}
6f97dba0
AL		 1866#endif /* __linux__ || __sun__ */
1867
1868#if defined(__linux__)
e551498e
GH		 1869
1870#define HAVE_CHARDEV_PARPORT 1
1871
6f97dba0
AL		 1872typedef struct {
1873 int fd;
1874 int mode;
1875} ParallelCharDriver;
1876
1877static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1878{
1879 if (s->mode != mode) {
1880 int m = mode;
1881 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1882 return 0;
1883 s->mode = mode;
1884 }
1885 return 1;
1886}
1887
1888static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1889{
1890 ParallelCharDriver *drv = chr->opaque;
1891 int fd = drv->fd;
1892 uint8_t b;
1893
1894 switch(cmd) {
1895 case CHR_IOCTL_PP_READ_DATA:
1896 if (ioctl(fd, PPRDATA, &b) < 0)
1897 return -ENOTSUP;
1898 *(uint8_t *)arg = b;
1899 break;
1900 case CHR_IOCTL_PP_WRITE_DATA:
1901 b = *(uint8_t *)arg;
1902 if (ioctl(fd, PPWDATA, &b) < 0)
1903 return -ENOTSUP;
1904 break;
1905 case CHR_IOCTL_PP_READ_CONTROL:
1906 if (ioctl(fd, PPRCONTROL, &b) < 0)
1907 return -ENOTSUP;
1908 /* Linux gives only the lowest bits, and no way to know data
1909 direction! For better compatibility set the fixed upper
1910 bits. */
1911 *(uint8_t *)arg = b | 0xc0;
1912 break;
1913 case CHR_IOCTL_PP_WRITE_CONTROL:
1914 b = *(uint8_t *)arg;
1915 if (ioctl(fd, PPWCONTROL, &b) < 0)
1916 return -ENOTSUP;
1917 break;
1918 case CHR_IOCTL_PP_READ_STATUS:
1919 if (ioctl(fd, PPRSTATUS, &b) < 0)
1920 return -ENOTSUP;
1921 *(uint8_t *)arg = b;
1922 break;
1923 case CHR_IOCTL_PP_DATA_DIR:
1924 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1925 return -ENOTSUP;
1926 break;
1927 case CHR_IOCTL_PP_EPP_READ_ADDR:
1928 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1929 struct ParallelIOArg *parg = arg;
1930 int n = read(fd, parg->buffer, parg->count);
1931 if (n != parg->count) {
1932 return -EIO;
1933 }
1934 }
1935 break;
1936 case CHR_IOCTL_PP_EPP_READ:
1937 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1938 struct ParallelIOArg *parg = arg;
1939 int n = read(fd, parg->buffer, parg->count);
1940 if (n != parg->count) {
1941 return -EIO;
1942 }
1943 }
1944 break;
1945 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1946 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1947 struct ParallelIOArg *parg = arg;
1948 int n = write(fd, parg->buffer, parg->count);
1949 if (n != parg->count) {
1950 return -EIO;
1951 }
1952 }
1953 break;
1954 case CHR_IOCTL_PP_EPP_WRITE:
1955 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1956 struct ParallelIOArg *parg = arg;
1957 int n = write(fd, parg->buffer, parg->count);
1958 if (n != parg->count) {
1959 return -EIO;
1960 }
1961 }
1962 break;
1963 default:
1964 return -ENOTSUP;
1965 }
1966 return 0;
1967}
1968
72ac8762 1969static void pp_free(CharDriverState *chr)
6f97dba0
AL		 1970{
1971 ParallelCharDriver *drv = chr->opaque;
1972 int fd = drv->fd;
1973
1974 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1975 ioctl(fd, PPRELEASE);
1976 close(fd);
7267c094 1977 g_free(drv);
a425d23f 1978 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1979}
1980
d0d7708b
DB		 1981static CharDriverState *qemu_chr_open_pp_fd(int fd,
1982 ChardevCommon *backend,
1983 Error **errp)
6f97dba0
AL		 1984{
1985 CharDriverState *chr;
1986 ParallelCharDriver *drv;
6f97dba0
AL		 1987
1988 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1989 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1990 close(fd);
1f51470d 1991 return NULL;
6f97dba0
AL		 1992 }
1993
d0d7708b
DB		 1994 chr = qemu_chr_alloc(backend, errp);
1995 if (!chr) {
1996 return NULL;
1997 }
27ef9cb0
PB		 1998
1999 drv = g_new0(ParallelCharDriver, 1);
2000 chr->opaque = drv;
6f97dba0
AL		 2001 chr->chr_write = null_chr_write;
2002 chr->chr_ioctl = pp_ioctl;
72ac8762 2003 chr->chr_free = pp_free;
27ef9cb0
PB		 2004
2005 drv->fd = fd;
2006 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 2007
1f51470d 2008 return chr;
6f97dba0
AL		 2009}
2010#endif /* __linux__ */
2011
a167ba50 2012#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 2013
2014#define HAVE_CHARDEV_PARPORT 1
2015
6972f935
BS		 2016static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
2017{
e0efb993 2018 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 2019 uint8_t b;
2020
2021 switch(cmd) {
2022 case CHR_IOCTL_PP_READ_DATA:
2023 if (ioctl(fd, PPIGDATA, &b) < 0)
2024 return -ENOTSUP;
2025 *(uint8_t *)arg = b;
2026 break;
2027 case CHR_IOCTL_PP_WRITE_DATA:
2028 b = *(uint8_t *)arg;
2029 if (ioctl(fd, PPISDATA, &b) < 0)
2030 return -ENOTSUP;
2031 break;
2032 case CHR_IOCTL_PP_READ_CONTROL:
2033 if (ioctl(fd, PPIGCTRL, &b) < 0)
2034 return -ENOTSUP;
2035 *(uint8_t *)arg = b;
2036 break;
2037 case CHR_IOCTL_PP_WRITE_CONTROL:
2038 b = *(uint8_t *)arg;
2039 if (ioctl(fd, PPISCTRL, &b) < 0)
2040 return -ENOTSUP;
2041 break;
2042 case CHR_IOCTL_PP_READ_STATUS:
2043 if (ioctl(fd, PPIGSTATUS, &b) < 0)
2044 return -ENOTSUP;
2045 *(uint8_t *)arg = b;
2046 break;
2047 default:
2048 return -ENOTSUP;
2049 }
2050 return 0;
2051}
2052
d0d7708b 2053static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 2054 ChardevCommon *backend,
d0d7708b 2055 Error **errp)
6972f935
BS		 2056{
2057 CharDriverState *chr;
6972f935 2058
0850d49c 2059 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 2060 if (!chr) {
2061 return NULL;
2062 }
e0efb993 2063 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 2064 chr->chr_write = null_chr_write;
2065 chr->chr_ioctl = pp_ioctl;
bd5c51ee 2066 chr->explicit_be_open = true;
1f51470d 2067 return chr;
6972f935
BS		 2068}
2069#endif
2070
6f97dba0
AL		 2071#else /* _WIN32 */
2072
d809ab95
PB		 2073#define HAVE_CHARDEV_SERIAL 1
2074
6f97dba0
AL		 2075typedef struct {
2076 int max_size;
2077 HANDLE hcom, hrecv, hsend;
9005b2a7 2078 OVERLAPPED orecv;
6f97dba0
AL		 2079 BOOL fpipe;
2080 DWORD len;
9005b2a7
PB		 2081
2082 /* Protected by the CharDriverState chr_write_lock. */
2083 OVERLAPPED osend;
6f97dba0
AL		 2084} WinCharState;
2085
db418a0a
FC		 2086typedef struct {
2087 HANDLE hStdIn;
2088 HANDLE hInputReadyEvent;
2089 HANDLE hInputDoneEvent;
2090 HANDLE hInputThread;
2091 uint8_t win_stdio_buf;
2092} WinStdioCharState;
2093
6f97dba0
AL		 2094#define NSENDBUF 2048
2095#define NRECVBUF 2048
2096#define MAXCONNECT 1
2097#define NTIMEOUT 5000
2098
2099static int win_chr_poll(void *opaque);
2100static int win_chr_pipe_poll(void *opaque);
2101
72ac8762 2102static void win_chr_free(CharDriverState *chr)
6f97dba0
AL		 2103{
2104 WinCharState *s = chr->opaque;
2105
2106 if (s->hsend) {
2107 CloseHandle(s->hsend);
2108 s->hsend = NULL;
2109 }
2110 if (s->hrecv) {
2111 CloseHandle(s->hrecv);
2112 s->hrecv = NULL;
2113 }
2114 if (s->hcom) {
2115 CloseHandle(s->hcom);
2116 s->hcom = NULL;
2117 }
2118 if (s->fpipe)
2119 qemu_del_polling_cb(win_chr_pipe_poll, chr);
2120 else
2121 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 2122
a425d23f 2123 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2124}
2125
6511d396 2126static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 2127{
2128 WinCharState *s = chr->opaque;
2129 COMMCONFIG comcfg;
2130 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
2131 COMSTAT comstat;
2132 DWORD size;
2133 DWORD err;
2134
2135 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2136 if (!s->hsend) {
6511d396 2137 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2138 goto fail;
2139 }
2140 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2141 if (!s->hrecv) {
6511d396 2142 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2143 goto fail;
2144 }
2145
2146 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
2147 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
2148 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 2149 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 2150 s->hcom = NULL;
2151 goto fail;
2152 }
2153
2154 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 2155 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 2156 goto fail;
2157 }
2158
2159 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
2160 size = sizeof(COMMCONFIG);
2161 GetDefaultCommConfig(filename, &comcfg, &size);
2162 comcfg.dcb.DCBlength = sizeof(DCB);
2163 CommConfigDialog(filename, NULL, &comcfg);
2164
2165 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 2166 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 2167 goto fail;
2168 }
2169
2170 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 2171 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 2172 goto fail;
2173 }
2174
2175 cto.ReadIntervalTimeout = MAXDWORD;
2176 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 2177 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 2178 goto fail;
2179 }
2180
2181 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2182 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2183 goto fail;
2184 }
2185 qemu_add_polling_cb(win_chr_poll, chr);
2186 return 0;
2187
2188 fail:
72ac8762 2189 win_chr_free(chr);
6f97dba0
AL		 2190 return -1;
2191}
2192
9005b2a7 2193/* Called with chr_write_lock held. */
6f97dba0
AL		 2194static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2195{
2196 WinCharState *s = chr->opaque;
2197 DWORD len, ret, size, err;
2198
2199 len = len1;
2200 ZeroMemory(&s->osend, sizeof(s->osend));
2201 s->osend.hEvent = s->hsend;
2202 while (len > 0) {
2203 if (s->hsend)
2204 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2205 else
2206 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2207 if (!ret) {
2208 err = GetLastError();
2209 if (err == ERROR_IO_PENDING) {
2210 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2211 if (ret) {
2212 buf += size;
2213 len -= size;
2214 } else {
2215 break;
2216 }
2217 } else {
2218 break;
2219 }
2220 } else {
2221 buf += size;
2222 len -= size;
2223 }
2224 }
2225 return len1 - len;
2226}
2227
2228static int win_chr_read_poll(CharDriverState *chr)
2229{
2230 WinCharState *s = chr->opaque;
2231
909cda12 2232 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2233 return s->max_size;
2234}
2235
2236static void win_chr_readfile(CharDriverState *chr)
2237{
2238 WinCharState *s = chr->opaque;
2239 int ret, err;
9bd7854e 2240 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2241 DWORD size;
2242
2243 ZeroMemory(&s->orecv, sizeof(s->orecv));
2244 s->orecv.hEvent = s->hrecv;
2245 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2246 if (!ret) {
2247 err = GetLastError();
2248 if (err == ERROR_IO_PENDING) {
2249 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2250 }
2251 }
2252
2253 if (size > 0) {
fa5efccb 2254 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2255 }
2256}
2257
2258static void win_chr_read(CharDriverState *chr)
2259{
2260 WinCharState *s = chr->opaque;
2261
2262 if (s->len > s->max_size)
2263 s->len = s->max_size;
2264 if (s->len == 0)
2265 return;
2266
2267 win_chr_readfile(chr);
2268}
2269
2270static int win_chr_poll(void *opaque)
2271{
2272 CharDriverState *chr = opaque;
2273 WinCharState *s = chr->opaque;
2274 COMSTAT status;
2275 DWORD comerr;
2276
2277 ClearCommError(s->hcom, &comerr, &status);
2278 if (status.cbInQue > 0) {
2279 s->len = status.cbInQue;
2280 win_chr_read_poll(chr);
2281 win_chr_read(chr);
2282 return 1;
2283 }
2284 return 0;
2285}
2286
6511d396 2287static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2288 ChardevCommon *backend,
6511d396 2289 Error **errp)
6f97dba0
AL		 2290{
2291 CharDriverState *chr;
2292 WinCharState *s;
2293
d0d7708b
DB		 2294 chr = qemu_chr_alloc(backend, errp);
2295 if (!chr) {
2296 return NULL;
2297 }
2d528d45 2298 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2299 chr->opaque = s;
2300 chr->chr_write = win_chr_write;
72ac8762 2301 chr->chr_free = win_chr_free;
6f97dba0 2302
6511d396 2303 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2304 g_free(s);
d0d7708b 2305 qemu_chr_free_common(chr);
1f51470d 2306 return NULL;
6f97dba0 2307 }
1f51470d 2308 return chr;
6f97dba0
AL		 2309}
2310
2311static int win_chr_pipe_poll(void *opaque)
2312{
2313 CharDriverState *chr = opaque;
2314 WinCharState *s = chr->opaque;
2315 DWORD size;
2316
2317 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2318 if (size > 0) {
2319 s->len = size;
2320 win_chr_read_poll(chr);
2321 win_chr_read(chr);
2322 return 1;
2323 }
2324 return 0;
2325}
2326
20cbe7a2
PB		 2327static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2328 Error **errp)
6f97dba0
AL		 2329{
2330 WinCharState *s = chr->opaque;
2331 OVERLAPPED ov;
2332 int ret;
2333 DWORD size;
0ff0fad2 2334 char *openname;
6f97dba0
AL		 2335
2336 s->fpipe = TRUE;
2337
2338 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2339 if (!s->hsend) {
20cbe7a2 2340 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2341 goto fail;
2342 }
2343 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2344 if (!s->hrecv) {
20cbe7a2 2345 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2346 goto fail;
2347 }
2348
0ff0fad2 2349 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2350 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2351 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2352 PIPE_WAIT,
2353 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2354 g_free(openname);
6f97dba0 2355 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2356 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2357 s->hcom = NULL;
2358 goto fail;
2359 }
2360
2361 ZeroMemory(&ov, sizeof(ov));
2362 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2363 ret = ConnectNamedPipe(s->hcom, &ov);
2364 if (ret) {
20cbe7a2 2365 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2366 goto fail;
2367 }
2368
2369 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2370 if (!ret) {
20cbe7a2 2371 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2372 if (ov.hEvent) {
2373 CloseHandle(ov.hEvent);
2374 ov.hEvent = NULL;
2375 }
2376 goto fail;
2377 }
2378
2379 if (ov.hEvent) {
2380 CloseHandle(ov.hEvent);
2381 ov.hEvent = NULL;
2382 }
2383 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2384 return 0;
2385
2386 fail:
72ac8762 2387 win_chr_free(chr);
6f97dba0
AL		 2388 return -1;
2389}
2390
2391
20cbe7a2
PB		 2392static CharDriverState *qemu_chr_open_pipe(const char *id,
2393 ChardevBackend *backend,
2394 ChardevReturn *ret,
2395 Error **errp)
6f97dba0 2396{
32bafa8f 2397 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2398 const char *filename = opts->device;
6f97dba0
AL		 2399 CharDriverState *chr;
2400 WinCharState *s;
f194a1ae 2401 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2402
d0d7708b
DB		 2403 chr = qemu_chr_alloc(common, errp);
2404 if (!chr) {
2405 return NULL;
2406 }
2d528d45 2407 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2408 chr->opaque = s;
2409 chr->chr_write = win_chr_write;
72ac8762 2410 chr->chr_free = win_chr_free;
6f97dba0 2411
20cbe7a2 2412 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2413 g_free(s);
d0d7708b 2414 qemu_chr_free_common(chr);
1f51470d 2415 return NULL;
6f97dba0 2416 }
1f51470d 2417 return chr;
6f97dba0
AL		 2418}
2419
d0d7708b
DB		 2420static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2421 ChardevCommon *backend,
2422 Error **errp)
6f97dba0
AL		 2423{
2424 CharDriverState *chr;
2425 WinCharState *s;
2426
d0d7708b
DB		 2427 chr = qemu_chr_alloc(backend, errp);
2428 if (!chr) {
2429 return NULL;
2430 }
2d528d45 2431 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2432 s->hcom = fd_out;
2433 chr->opaque = s;
2434 chr->chr_write = win_chr_write;
1f51470d 2435 return chr;
6f97dba0
AL		 2436}
2437
122e5ed4
PB		 2438static CharDriverState *qemu_chr_open_win_con(const char *id,
2439 ChardevBackend *backend,
2440 ChardevReturn *ret,
2441 Error **errp)
6f97dba0 2442{
32bafa8f 2443 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2444 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2445 common, errp);
6f97dba0
AL		 2446}
2447
db418a0a
FC		 2448static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2449{
2450 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2451 DWORD dwSize;
2452 int len1;
2453
2454 len1 = len;
2455
2456 while (len1 > 0) {
2457 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2458 break;
2459 }
2460 buf += dwSize;
2461 len1 -= dwSize;
2462 }
2463
2464 return len - len1;
2465}
2466
2467static void win_stdio_wait_func(void *opaque)
2468{
2469 CharDriverState *chr = opaque;
2470 WinStdioCharState *stdio = chr->opaque;
2471 INPUT_RECORD buf[4];
2472 int ret;
2473 DWORD dwSize;
2474 int i;
2475
dff7424d 2476 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2477
2478 if (!ret) {
2479 /* Avoid error storm */
2480 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2481 return;
2482 }
2483
2484 for (i = 0; i < dwSize; i++) {
2485 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2486
2487 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2488 int j;
2489 if (kev->uChar.AsciiChar != 0) {
2490 for (j = 0; j < kev->wRepeatCount; j++) {
2491 if (qemu_chr_be_can_write(chr)) {
2492 uint8_t c = kev->uChar.AsciiChar;
2493 qemu_chr_be_write(chr, &c, 1);
2494 }
2495 }
2496 }
2497 }
2498 }
2499}
2500
2501static DWORD WINAPI win_stdio_thread(LPVOID param)
2502{
2503 CharDriverState *chr = param;
2504 WinStdioCharState *stdio = chr->opaque;
2505 int ret;
2506 DWORD dwSize;
2507
2508 while (1) {
2509
2510 /* Wait for one byte */
2511 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2512
2513 /* Exit in case of error, continue if nothing read */
2514 if (!ret) {
2515 break;
2516 }
2517 if (!dwSize) {
2518 continue;
2519 }
2520
2521 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2522 if (stdio->win_stdio_buf == '\r') {
2523 continue;
2524 }
2525
2526 /* Signal the main thread and wait until the byte was eaten */
2527 if (!SetEvent(stdio->hInputReadyEvent)) {
2528 break;
2529 }
2530 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2531 != WAIT_OBJECT_0) {
2532 break;
2533 }
2534 }
2535
2536 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2537 return 0;
2538}
2539
2540static void win_stdio_thread_wait_func(void *opaque)
2541{
2542 CharDriverState *chr = opaque;
2543 WinStdioCharState *stdio = chr->opaque;
2544
2545 if (qemu_chr_be_can_write(chr)) {
2546 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2547 }
2548
2549 SetEvent(stdio->hInputDoneEvent);
2550}
2551
2552static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2553{
2554 WinStdioCharState *stdio = chr->opaque;
2555 DWORD dwMode = 0;
2556
2557 GetConsoleMode(stdio->hStdIn, &dwMode);
2558
2559 if (echo) {
2560 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2561 } else {
2562 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2563 }
2564}
2565
72ac8762 2566static void win_stdio_free(CharDriverState *chr)
db418a0a
FC		 2567{
2568 WinStdioCharState *stdio = chr->opaque;
2569
2570 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2571 CloseHandle(stdio->hInputReadyEvent);
2572 }
2573 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2574 CloseHandle(stdio->hInputDoneEvent);
2575 }
2576 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2577 TerminateThread(stdio->hInputThread, 0);
2578 }
2579
2580 g_free(chr->opaque);
db418a0a
FC		 2581}
2582
8c84b25d
PB		 2583static CharDriverState *qemu_chr_open_stdio(const char *id,
2584 ChardevBackend *backend,
2585 ChardevReturn *ret,
2586 Error **errp)
db418a0a
FC		 2587{
2588 CharDriverState *chr;
2589 WinStdioCharState *stdio;
2590 DWORD dwMode;
2591 int is_console = 0;
32bafa8f 2592 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2593
d0d7708b
DB		 2594 chr = qemu_chr_alloc(common, errp);
2595 if (!chr) {
2596 return NULL;
2597 }
2d528d45 2598 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2599
2600 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2601 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2602 error_setg(errp, "cannot open stdio: invalid handle");
2603 return NULL;
db418a0a
FC		 2604 }
2605
2606 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2607
2608 chr->opaque = stdio;
2609 chr->chr_write = win_stdio_write;
72ac8762 2610 chr->chr_free = win_stdio_free;
db418a0a 2611
ed7a1540
AL		 2612 if (is_console) {
2613 if (qemu_add_wait_object(stdio->hStdIn,
2614 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2615 error_setg(errp, "qemu_add_wait_object: failed");
2616 goto err1;
ed7a1540
AL		 2617 }
2618 } else {
2619 DWORD dwId;
2620
2621 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2622 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2623 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2624 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2625 error_setg(errp, "cannot create event");
2626 goto err2;
ed7a1540
AL		 2627 }
2628 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2629 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2630 error_setg(errp, "qemu_add_wait_object: failed");
2631 goto err2;
2632 }
2633 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2634 chr, 0, &dwId);
2635
2636 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2637 error_setg(errp, "cannot create stdio thread");
2638 goto err3;
db418a0a
FC		 2639 }
2640 }
2641
2642 dwMode |= ENABLE_LINE_INPUT;
2643
ed7a1540 2644 if (is_console) {
db418a0a
FC		 2645 /* set the terminal in raw mode */
2646 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2647 dwMode |= ENABLE_PROCESSED_INPUT;
2648 }
2649
2650 SetConsoleMode(stdio->hStdIn, dwMode);
2651
2652 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
5345fdb4 2653 qemu_chr_set_echo_win_stdio(chr, false);
db418a0a 2654
1f51470d 2655 return chr;
8c84b25d
PB		 2656
2657err3:
2658 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2659err2:
2660 CloseHandle(stdio->hInputReadyEvent);
2661 CloseHandle(stdio->hInputDoneEvent);
2662err1:
2663 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2664 return NULL;
db418a0a 2665}
6f97dba0
AL		 2666#endif /* !_WIN32 */
2667
2668/***********************************************************/
2669/* UDP Net console */
2670
2671typedef struct {
9894dc0c 2672 QIOChannel *ioc;
9bd7854e 2673 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2674 int bufcnt;
2675 int bufptr;
2676 int max_size;
2677} NetCharDriver;
2678
9005b2a7 2679/* Called with chr_write_lock held. */
6f97dba0
AL		 2680static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2681{
2682 NetCharDriver *s = chr->opaque;
76a9644b 2683
9894dc0c
DB		 2684 return qio_channel_write(
2685 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2686}
2687
2688static int udp_chr_read_poll(void *opaque)
2689{
2690 CharDriverState *chr = opaque;
2691 NetCharDriver *s = chr->opaque;
2692
909cda12 2693 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2694
2695 /* If there were any stray characters in the queue process them
2696 * first
2697 */
2698 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2699 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2700 s->bufptr++;
909cda12 2701 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2702 }
2703 return s->max_size;
2704}
2705
9894dc0c 2706static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2707{
2708 CharDriverState *chr = opaque;
2709 NetCharDriver *s = chr->opaque;
9894dc0c 2710 ssize_t ret;
6f97dba0 2711
cdbf6e16
PB		 2712 if (s->max_size == 0) {
2713 return TRUE;
2714 }
9894dc0c
DB		 2715 ret = qio_channel_read(
2716 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2717 if (ret <= 0) {
26da70c7 2718 remove_fd_in_watch(chr);
76a9644b
AL		 2719 return FALSE;
2720 }
9894dc0c 2721 s->bufcnt = ret;
6f97dba0
AL		 2722
2723 s->bufptr = 0;
2724 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2725 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2726 s->bufptr++;
909cda12 2727 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2728 }
76a9644b
AL		 2729
2730 return TRUE;
6f97dba0
AL		 2731}
2732
e92aa36a 2733static void udp_chr_update_read_handler(CharDriverState *chr,
a4afa548 2734 GMainContext *context)
6f97dba0
AL		 2735{
2736 NetCharDriver *s = chr->opaque;
2737
26da70c7 2738 remove_fd_in_watch(chr);
9894dc0c
DB		 2739 if (s->ioc) {
2740 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2741 udp_chr_read_poll,
e92aa36a
ZC		 2742 udp_chr_read, chr,
2743 context);
6f97dba0
AL		 2744 }
2745}
2746
72ac8762 2747static void udp_chr_free(CharDriverState *chr)
819f56b7
AL		 2748{
2749 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2750
2751 remove_fd_in_watch(chr);
9894dc0c
DB		 2752 if (s->ioc) {
2753 object_unref(OBJECT(s->ioc));
819f56b7 2754 }
7267c094 2755 g_free(s);
a425d23f 2756 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2757}
2758
9894dc0c
DB		 2759static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2760 ChardevCommon *backend,
2761 Error **errp)
6f97dba0
AL		 2762{
2763 CharDriverState *chr = NULL;
2764 NetCharDriver *s = NULL;
6f97dba0 2765
d0d7708b
DB		 2766 chr = qemu_chr_alloc(backend, errp);
2767 if (!chr) {
2768 return NULL;
2769 }
2d528d45 2770 s = g_new0(NetCharDriver, 1);
6f97dba0 2771
9894dc0c 2772 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2773 s->bufcnt = 0;
2774 s->bufptr = 0;
2775 chr->opaque = s;
2776 chr->chr_write = udp_chr_write;
2777 chr->chr_update_read_handler = udp_chr_update_read_handler;
72ac8762 2778 chr->chr_free = udp_chr_free;
bd5c51ee
MR		 2779 /* be isn't opened until we get a connection */
2780 chr->explicit_be_open = true;
1f51470d 2781 return chr;
3ecc059d 2782}
6f97dba0 2783
6f97dba0
AL		 2784/***********************************************************/
2785/* TCP Net console */
2786
2787typedef struct {
a8fb5427
DB		 2788 QIOChannel *ioc; /* Client I/O channel */
2789 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2790 QIOChannelSocket *listen_ioc;
7ba9addc 2791 guint listen_tag;
a8fb5427 2792 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2793 int connected;
2794 int max_size;
2795 int do_telnetopt;
2796 int do_nodelay;
2797 int is_unix;
c76bf6bb 2798 int *read_msgfds;
9894dc0c 2799 size_t read_msgfds_num;
d39aac7a 2800 int *write_msgfds;
9894dc0c 2801 size_t write_msgfds_num;
cfb429cb
CM		 2802
2803 SocketAddress *addr;
2804 bool is_listen;
2805 bool is_telnet;
5dd1f02b
CM		 2806
2807 guint reconnect_timer;
2808 int64_t reconnect_time;
5008e5b7 2809 bool connect_err_reported;
6f97dba0
AL		 2810} TCPCharDriver;
2811
5dd1f02b
CM		 2812static gboolean socket_reconnect_timeout(gpointer opaque);
2813
2814static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2815{
2816 TCPCharDriver *s = chr->opaque;
2817 assert(s->connected == 0);
2818 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2819 socket_reconnect_timeout, chr);
2820}
2821
5008e5b7
CM		 2822static void check_report_connect_error(CharDriverState *chr,
2823 Error *err)
2824{
2825 TCPCharDriver *s = chr->opaque;
2826
2827 if (!s->connect_err_reported) {
2828 error_report("Unable to connect character device %s: %s",
2829 chr->label, error_get_pretty(err));
2830 s->connect_err_reported = true;
2831 }
2832 qemu_chr_socket_restart_timer(chr);
2833}
2834
9894dc0c
DB		 2835static gboolean tcp_chr_accept(QIOChannel *chan,
2836 GIOCondition cond,
2837 void *opaque);
d39aac7a 2838
9005b2a7 2839/* Called with chr_write_lock held. */
6f97dba0
AL		 2840static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2841{
2842 TCPCharDriver *s = chr->opaque;
2843 if (s->connected) {
9894dc0c
DB		 2844 int ret = io_channel_send_full(s->ioc, buf, len,
2845 s->write_msgfds,
2846 s->write_msgfds_num);
2847
2848 /* free the written msgfds, no matter what */
2849 if (s->write_msgfds_num) {
2850 g_free(s->write_msgfds);
2851 s->write_msgfds = 0;
2852 s->write_msgfds_num = 0;
d39aac7a 2853 }
9894dc0c
DB		 2854
2855 return ret;
455aa1e0 2856 } else {
6db0fdce 2857 /* XXX: indicate an error ? */
455aa1e0 2858 return len;
6f97dba0
AL		 2859 }
2860}
2861
2862static int tcp_chr_read_poll(void *opaque)
2863{
2864 CharDriverState *chr = opaque;
2865 TCPCharDriver *s = chr->opaque;
2866 if (!s->connected)
2867 return 0;
909cda12 2868 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2869 return s->max_size;
2870}
2871
2872#define IAC 255
2873#define IAC_BREAK 243
2874static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2875 TCPCharDriver *s,
2876 uint8_t *buf, int *size)
2877{
2878 /* Handle any telnet client's basic IAC options to satisfy char by
2879 * char mode with no echo. All IAC options will be removed from
2880 * the buf and the do_telnetopt variable will be used to track the
2881 * state of the width of the IAC information.
2882 *
2883 * IAC commands come in sets of 3 bytes with the exception of the
2884 * "IAC BREAK" command and the double IAC.
2885 */
2886
2887 int i;
2888 int j = 0;
2889
2890 for (i = 0; i < *size; i++) {
2891 if (s->do_telnetopt > 1) {
2892 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2893 /* Double IAC means send an IAC */
2894 if (j != i)
2895 buf[j] = buf[i];
2896 j++;
2897 s->do_telnetopt = 1;
2898 } else {
2899 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2900 /* Handle IAC break commands by sending a serial break */
a425d23f 2901 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2902 s->do_telnetopt++;
2903 }
2904 s->do_telnetopt++;
2905 }
2906 if (s->do_telnetopt >= 4) {
2907 s->do_telnetopt = 1;
2908 }
2909 } else {
2910 if ((unsigned char)buf[i] == IAC) {
2911 s->do_telnetopt = 2;
2912 } else {
2913 if (j != i)
2914 buf[j] = buf[i];
2915 j++;
2916 }
2917 }
2918 }
2919 *size = j;
2920}
2921
c76bf6bb 2922static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2923{
2924 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2925 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2926
c4095726
MT		 2927 assert(num <= TCP_MAX_FDS);
2928
c76bf6bb 2929 if (to_copy) {
d2fc39b4
SH		 2930 int i;
2931
c76bf6bb
NN		 2932 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2933
d2fc39b4
SH		 2934 /* Close unused fds */
2935 for (i = to_copy; i < s->read_msgfds_num; i++) {
2936 close(s->read_msgfds[i]);
2937 }
2938
c76bf6bb
NN		 2939 g_free(s->read_msgfds);
2940 s->read_msgfds = 0;
2941 s->read_msgfds_num = 0;
2942 }
2943
2944 return to_copy;
7d174059
MM		 2945}
2946
d39aac7a
NN		 2947static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2948{
2949 TCPCharDriver *s = chr->opaque;
2950
2951 /* clear old pending fd array */
ef1e1e07 2952 g_free(s->write_msgfds);
869a58af 2953 s->write_msgfds = NULL;
5b498459 2954 s->write_msgfds_num = 0;
d39aac7a 2955
5c7eaabf
MAL		 2956 if (!s->connected ||
2957 !qio_channel_has_feature(s->ioc,
2958 QIO_CHANNEL_FEATURE_FD_PASS)) {
2959 return -1;
2960 }
2961
d39aac7a 2962 if (num) {
2d528d45 2963 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2964 memcpy(s->write_msgfds, fds, num * sizeof(int));
2965 }
2966
2967 s->write_msgfds_num = num;
2968
2969 return 0;
2970}
2971
9894dc0c 2972static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2973{
2974 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2975 struct iovec iov = { .iov_base = buf, .iov_len = len };
2976 int ret;
2977 size_t i;
2978 int *msgfds = NULL;
2979 size_t msgfds_num = 0;
2980
2981 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2982 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2983 &msgfds, &msgfds_num,
2984 NULL);
2985 } else {
2986 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2987 NULL, NULL,
2988 NULL);
2989 }
7d174059 2990
b6572b4f
MAL		 2991 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2992 errno = EAGAIN;
2993 ret = -1;
2994 } else if (ret == -1) {
2995 errno = EIO;
2996 }
2997
9894dc0c 2998 if (msgfds_num) {
c76bf6bb
NN		 2999 /* close and clean read_msgfds */
3000 for (i = 0; i < s->read_msgfds_num; i++) {
3001 close(s->read_msgfds[i]);
3002 }
9b938c72 3003
c76bf6bb
NN		 3004 if (s->read_msgfds_num) {
3005 g_free(s->read_msgfds);
3006 }
3007
9894dc0c
DB		 3008 s->read_msgfds = msgfds;
3009 s->read_msgfds_num = msgfds_num;
7d174059 3010 }
7d174059 3011
9894dc0c
DB		 3012 for (i = 0; i < s->read_msgfds_num; i++) {
3013 int fd = s->read_msgfds[i];
3014 if (fd < 0) {
3015 continue;
3016 }
9977c894 3017
9894dc0c
DB		 3018 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
3019 qemu_set_block(fd);
7d174059 3020
9894dc0c
DB		 3021#ifndef MSG_CMSG_CLOEXEC
3022 qemu_set_cloexec(fd);
06138651 3023#endif
06138651 3024 }
9977c894 3025
7d174059 3026 return ret;
9977c894 3027}
9977c894 3028
d3cc5bc4
AS		 3029static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
3030{
3031 TCPCharDriver *s = chr->opaque;
9894dc0c 3032 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 3033}
3034
5b498459 3035static void tcp_chr_free_connection(CharDriverState *chr)
7b0bfdf5
NN		 3036{
3037 TCPCharDriver *s = chr->opaque;
5b498459 3038 int i;
7b0bfdf5 3039
342f7a9d
MAL		 3040 if (!s->connected) {
3041 return;
3042 }
3043
5b498459
MAL		 3044 if (s->read_msgfds_num) {
3045 for (i = 0; i < s->read_msgfds_num; i++) {
3046 close(s->read_msgfds[i]);
3047 }
3048 g_free(s->read_msgfds);
3049 s->read_msgfds = NULL;
3050 s->read_msgfds_num = 0;
7b0bfdf5 3051 }
5b498459 3052
6167ebbd 3053 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 3054 remove_fd_in_watch(chr);
a8fb5427
DB		 3055 object_unref(OBJECT(s->sioc));
3056 s->sioc = NULL;
9894dc0c
DB		 3057 object_unref(OBJECT(s->ioc));
3058 s->ioc = NULL;
0ff0fad2 3059 g_free(chr->filename);
5b498459
MAL		 3060 chr->filename = NULL;
3061 s->connected = 0;
3062}
3063
3064static void tcp_chr_disconnect(CharDriverState *chr)
3065{
3066 TCPCharDriver *s = chr->opaque;
3067
3068 if (!s->connected) {
3069 return;
3070 }
3071
3072 tcp_chr_free_connection(chr);
3073
3074 if (s->listen_ioc) {
3075 s->listen_tag = qio_channel_add_watch(
3076 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
3077 }
0ff0fad2
DB		 3078 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
3079 s->is_listen, s->is_telnet);
7b0bfdf5 3080 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 3081 if (s->reconnect_time) {
3082 qemu_chr_socket_restart_timer(chr);
3083 }
7b0bfdf5
NN		 3084}
3085
9894dc0c 3086static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 3087{
3088 CharDriverState *chr = opaque;
3089 TCPCharDriver *s = chr->opaque;
9bd7854e 3090 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 3091 int len, size;
3092
2ea5a7af 3093 if (!s->connected || s->max_size <= 0) {
cdbf6e16 3094 return TRUE;
2ea5a7af 3095 }
6f97dba0
AL		 3096 len = sizeof(buf);
3097 if (len > s->max_size)
3098 len = s->max_size;
9977c894 3099 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 3100 if (size == 0 || size == -1) {
6f97dba0 3101 /* connection closed */
7b0bfdf5 3102 tcp_chr_disconnect(chr);
6f97dba0
AL		 3103 } else if (size > 0) {
3104 if (s->do_telnetopt)
3105 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
3106 if (size > 0)
fa5efccb 3107 qemu_chr_be_write(chr, buf, size);
6f97dba0 3108 }
2ea5a7af
AL		 3109
3110 return TRUE;
6f97dba0
AL		 3111}
3112
7b0bfdf5
NN		 3113static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
3114{
3115 TCPCharDriver *s = chr->opaque;
3116 int size;
3117
3118 if (!s->connected) {
3119 return 0;
3120 }
3121
3122 size = tcp_chr_recv(chr, (void *) buf, len);
3123 if (size == 0) {
3124 /* connection closed */
3125 tcp_chr_disconnect(chr);
3126 }
3127
3128 return size;
3129}
3130
6f97dba0
AL		 3131static void tcp_chr_connect(void *opaque)
3132{
3133 CharDriverState *chr = opaque;
3134 TCPCharDriver *s = chr->opaque;
16cc4ffe 3135
0ff0fad2 3136 g_free(chr->filename);
a8fb5427
DB		 3137 chr->filename = sockaddr_to_str(
3138 &s->sioc->localAddr, s->sioc->localAddrLen,
3139 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
3140 s->is_listen, s->is_telnet);
6f97dba0
AL		 3141
3142 s->connected = 1;
9894dc0c
DB		 3143 if (s->ioc) {
3144 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3145 tcp_chr_read_poll,
e92aa36a
ZC		 3146 tcp_chr_read,
3147 chr, NULL);
bbdd2ad0 3148 }
fee204fd 3149 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 3150}
3151
e92aa36a 3152static void tcp_chr_update_read_handler(CharDriverState *chr,
a4afa548 3153 GMainContext *context)
ac1b84dd
GH		 3154{
3155 TCPCharDriver *s = chr->opaque;
3156
1e94f23d
DB		 3157 if (!s->connected) {
3158 return;
3159 }
3160
ac1b84dd 3161 remove_fd_in_watch(chr);
9894dc0c
DB		 3162 if (s->ioc) {
3163 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3164 tcp_chr_read_poll,
e92aa36a
ZC		 3165 tcp_chr_read, chr,
3166 context);
ac1b84dd
GH		 3167 }
3168}
3169
f2001a7e
DB		 3170typedef struct {
3171 CharDriverState *chr;
3172 char buf[12];
3173 size_t buflen;
3174} TCPCharDriverTelnetInit;
3175
3176static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
3177 GIOCondition cond G_GNUC_UNUSED,
3178 gpointer user_data)
6f97dba0 3179{
f2001a7e
DB		 3180 TCPCharDriverTelnetInit *init = user_data;
3181 ssize_t ret;
3182
3183 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3184 if (ret < 0) {
3185 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3186 ret = 0;
3187 } else {
3188 tcp_chr_disconnect(init->chr);
3189 return FALSE;
3190 }
3191 }
3192 init->buflen -= ret;
3193
3194 if (init->buflen == 0) {
3195 tcp_chr_connect(init->chr);
3196 return FALSE;
3197 }
3198
3199 memmove(init->buf, init->buf + ret, init->buflen);
3200
3201 return TRUE;
3202}
3203
3204static void tcp_chr_telnet_init(CharDriverState *chr)
3205{
3206 TCPCharDriver *s = chr->opaque;
3207 TCPCharDriverTelnetInit *init =
3208 g_new0(TCPCharDriverTelnetInit, 1);
3209 size_t n = 0;
3210
3211 init->chr = chr;
3212 init->buflen = 12;
3213
3214#define IACSET(x, a, b, c) \
3215 do { \
3216 x[n++] = a; \
3217 x[n++] = b; \
3218 x[n++] = c; \
3219 } while (0)
3220
3221 /* Prep the telnet negotion to put telnet in binary,
3222 * no echo, single char mode */
3223 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3224 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3225 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3226 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3227
3228#undef IACSET
3229
3230 qio_channel_add_watch(
3231 s->ioc, G_IO_OUT,
3232 tcp_chr_telnet_init_io,
3233 init, NULL);
6f97dba0
AL		 3234}
3235
a8fb5427
DB		 3236
3237static void tcp_chr_tls_handshake(Object *source,
3238 Error *err,
3239 gpointer user_data)
3240{
3241 CharDriverState *chr = user_data;
3242 TCPCharDriver *s = chr->opaque;
3243
3244 if (err) {
3245 tcp_chr_disconnect(chr);
3246 } else {
3247 if (s->do_telnetopt) {
3248 tcp_chr_telnet_init(chr);
3249 } else {
3250 tcp_chr_connect(chr);
3251 }
3252 }
3253}
3254
3255
3256static void tcp_chr_tls_init(CharDriverState *chr)
3257{
3258 TCPCharDriver *s = chr->opaque;
3259 QIOChannelTLS *tioc;
3260 Error *err = NULL;
3261
3262 if (s->is_listen) {
3263 tioc = qio_channel_tls_new_server(
3264 s->ioc, s->tls_creds,
3265 NULL, /* XXX Use an ACL */
3266 &err);
3267 } else {
3268 tioc = qio_channel_tls_new_client(
3269 s->ioc, s->tls_creds,
32bafa8f 3270 s->addr->u.inet.data->host,
a8fb5427
DB		 3271 &err);
3272 }
3273 if (tioc == NULL) {
3274 error_free(err);
3275 tcp_chr_disconnect(chr);
660a2d83 3276 return;
a8fb5427
DB		 3277 }
3278 object_unref(OBJECT(s->ioc));
3279 s->ioc = QIO_CHANNEL(tioc);
3280
3281 qio_channel_tls_handshake(tioc,
3282 tcp_chr_tls_handshake,
3283 chr,
3284 NULL);
3285}
3286
3287
9894dc0c 3288static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3289{
3290 TCPCharDriver *s = chr->opaque;
9894dc0c 3291 if (s->ioc != NULL) {
13661089 3292 return -1;
9894dc0c 3293 }
13661089 3294
9894dc0c
DB		 3295 s->ioc = QIO_CHANNEL(sioc);
3296 object_ref(OBJECT(sioc));
a8fb5427
DB		 3297 s->sioc = sioc;
3298 object_ref(OBJECT(sioc));
9894dc0c 3299
64c800f8
DB		 3300 qio_channel_set_blocking(s->ioc, false, NULL);
3301
9894dc0c
DB		 3302 if (s->do_nodelay) {
3303 qio_channel_set_delay(s->ioc, false);
3304 }
910b6368
PB		 3305 if (s->listen_tag) {
3306 g_source_remove(s->listen_tag);
3307 s->listen_tag = 0;
3308 }
f2001a7e 3309
a8fb5427
DB		 3310 if (s->tls_creds) {
3311 tcp_chr_tls_init(chr);
f2001a7e 3312 } else {
a8fb5427
DB		 3313 if (s->do_telnetopt) {
3314 tcp_chr_telnet_init(chr);
3315 } else {
3316 tcp_chr_connect(chr);
3317 }
f2001a7e 3318 }
13661089
DB		 3319
3320 return 0;
3321}
3322
9894dc0c
DB		 3323
3324static int tcp_chr_add_client(CharDriverState *chr, int fd)
3325{
3326 int ret;
3327 QIOChannelSocket *sioc;
3328
3329 sioc = qio_channel_socket_new_fd(fd, NULL);
3330 if (!sioc) {
3331 return -1;
3332 }
9894dc0c
DB		 3333 ret = tcp_chr_new_client(chr, sioc);
3334 object_unref(OBJECT(sioc));
3335 return ret;
3336}
3337
3338static gboolean tcp_chr_accept(QIOChannel *channel,
3339 GIOCondition cond,
3340 void *opaque)
6f97dba0
AL		 3341{
3342 CharDriverState *chr = opaque;
9894dc0c 3343 QIOChannelSocket *sioc;
6f97dba0 3344
9894dc0c
DB		 3345 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3346 NULL);
3347 if (!sioc) {
3348 return TRUE;
6f97dba0 3349 }
9894dc0c 3350
9894dc0c
DB		 3351 tcp_chr_new_client(chr, sioc);
3352
3353 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3354
3355 return TRUE;
6f97dba0
AL		 3356}
3357
d7a04fd7
MAL		 3358static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
3359{
3360 TCPCharDriver *s = chr->opaque;
3361 QIOChannelSocket *sioc;
3362
1dc8a669
MAL		 3363 /* It can't wait on s->connected, since it is set asynchronously
3364 * in TLS and telnet cases, only wait for an accepted socket */
3365 while (!s->ioc) {
d7a04fd7
MAL		 3366 if (s->is_listen) {
3367 fprintf(stderr, "QEMU waiting for connection on: %s\n",
3368 chr->filename);
3369 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3370 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3371 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3372 } else {
3373 sioc = qio_channel_socket_new();
3374 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3375 object_unref(OBJECT(sioc));
3376 return -1;
3377 }
3378 tcp_chr_new_client(chr, sioc);
3379 object_unref(OBJECT(sioc));
3380 }
3381 }
3382
3383 return 0;
3384}
3385
5345fdb4 3386static int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
6b6723c3
MAL		 3387{
3388 if (chr->chr_wait_connected) {
3389 return chr->chr_wait_connected(chr, errp);
3390 }
3391
3392 return 0;
3393}
3394
5345fdb4
MAL		 3395int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
3396{
fa394ed6
MAL		 3397 if (!be->chr) {
3398 error_setg(errp, "missing associated backend");
3399 return -1;
3400 }
3401
5345fdb4
MAL		 3402 return qemu_chr_wait_connected(be->chr, errp);
3403}
3404
72ac8762 3405static void tcp_chr_free(CharDriverState *chr)
6f97dba0
AL		 3406{
3407 TCPCharDriver *s = chr->opaque;
5b498459
MAL		 3408
3409 tcp_chr_free_connection(chr);
cfb429cb 3410
5dd1f02b
CM		 3411 if (s->reconnect_timer) {
3412 g_source_remove(s->reconnect_timer);
3413 s->reconnect_timer = 0;
3414 }
cfb429cb 3415 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3416 if (s->listen_tag) {
3417 g_source_remove(s->listen_tag);
3418 s->listen_tag = 0;
3419 }
3420 if (s->listen_ioc) {
3421 object_unref(OBJECT(s->listen_ioc));
819f56b7 3422 }
a8fb5427
DB		 3423 if (s->tls_creds) {
3424 object_unref(OBJECT(s->tls_creds));
3425 }
7267c094 3426 g_free(s);
a425d23f 3427 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3428}
3429
43ded1a0 3430
9894dc0c 3431static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3432{
9894dc0c 3433 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3434 CharDriverState *chr = opaque;
5008e5b7 3435 TCPCharDriver *s = chr->opaque;
5dd1f02b 3436
9894dc0c 3437 if (err) {
5008e5b7 3438 check_report_connect_error(chr, err);
9894dc0c 3439 object_unref(src);
5dd1f02b
CM		 3440 return;
3441 }
3442
5008e5b7 3443 s->connect_err_reported = false;
f50dfe45
DB		 3444 tcp_chr_new_client(chr, sioc);
3445 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3446}
3447
f6bd5d6e 3448
51767e7c 3449/*********************************************************/
3949e594 3450/* Ring buffer chardev */
51767e7c
LL		 3451
3452typedef struct {
3453 size_t size;
3454 size_t prod;
3455 size_t cons;
3456 uint8_t *cbuf;
3949e594 3457} RingBufCharDriver;
51767e7c 3458
3949e594 3459static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3460{
3949e594 3461 const RingBufCharDriver *d = chr->opaque;
51767e7c 3462
5c230105 3463 return d->prod - d->cons;
51767e7c
LL		 3464}
3465
9005b2a7 3466/* Called with chr_write_lock held. */
3949e594 3467static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3468{
3949e594 3469 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3470 int i;
3471
3472 if (!buf || (len < 0)) {
3473 return -1;
3474 }
3475
3476 for (i = 0; i < len; i++ ) {
5c230105
MA		 3477 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3478 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3479 d->cons = d->prod - d->size;
3480 }
3481 }
3482
5c936a83 3483 return len;
51767e7c
LL		 3484}
3485
3949e594 3486static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3487{
3949e594 3488 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3489 int i;
3490
9005b2a7 3491 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3492 for (i = 0; i < len && d->cons != d->prod; i++) {
3493 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3494 }
9005b2a7 3495 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3496
3497 return i;
3498}
3499
72ac8762 3500static void ringbuf_chr_free(struct CharDriverState *chr)
51767e7c 3501{
3949e594 3502 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3503
3504 g_free(d->cbuf);
3505 g_free(d);
3506 chr->opaque = NULL;
3507}
3508
479f09a1
PB		 3509static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3510 ChardevBackend *backend,
3511 ChardevReturn *ret,
4f57378f 3512 Error **errp)
51767e7c 3513{
32bafa8f 3514 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3515 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3516 CharDriverState *chr;
3949e594 3517 RingBufCharDriver *d;
51767e7c 3518
d0d7708b
DB		 3519 chr = qemu_chr_alloc(common, errp);
3520 if (!chr) {
3521 return NULL;
3522 }
51767e7c
LL		 3523 d = g_malloc(sizeof(*d));
3524
1da48c65 3525 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3526
3527 /* The size must be power of 2 */
3528 if (d->size & (d->size - 1)) {
4f57378f 3529 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3530 goto fail;
3531 }
3532
3533 d->prod = 0;
3534 d->cons = 0;
3535 d->cbuf = g_malloc0(d->size);
3536
3537 chr->opaque = d;
3949e594 3538 chr->chr_write = ringbuf_chr_write;
72ac8762 3539 chr->chr_free = ringbuf_chr_free;
51767e7c
LL		 3540
3541 return chr;
3542
3543fail:
3544 g_free(d);
d0d7708b 3545 qemu_chr_free_common(chr);
51767e7c
LL		 3546 return NULL;
3547}
3548
8e597779 3549bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3550{
3949e594 3551 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3552}
3553
3949e594 3554void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3555 bool has_format, enum DataFormat format,
1f590cf9
LL		 3556 Error **errp)
3557{
3558 CharDriverState *chr;
c4f331b6 3559 const uint8_t *write_data;
1f590cf9 3560 int ret;
3d1bba20 3561 gsize write_count;
1f590cf9
LL		 3562
3563 chr = qemu_chr_find(device);
3564 if (!chr) {
1a69278e 3565 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3566 return;
3567 }
3568
3949e594
MA		 3569 if (!chr_is_ringbuf(chr)) {
3570 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3571 return;
3572 }
3573
1f590cf9 3574 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3575 write_data = qbase64_decode(data, -1,
3576 &write_count,
3577 errp);
3578 if (!write_data) {
3579 return;
3580 }
1f590cf9
LL		 3581 } else {
3582 write_data = (uint8_t *)data;
82e59a67 3583 write_count = strlen(data);
1f590cf9
LL		 3584 }
3585
3949e594 3586 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3587
13289fb5
MA		 3588 if (write_data != (uint8_t *)data) {
3589 g_free((void *)write_data);
3590 }
3591
1f590cf9
LL		 3592 if (ret < 0) {
3593 error_setg(errp, "Failed to write to device %s", device);
3594 return;
3595 }
3596}
3597
3949e594 3598char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3599 bool has_format, enum DataFormat format,
3600 Error **errp)
49b6d722
LL		 3601{
3602 CharDriverState *chr;
c4f331b6 3603 uint8_t *read_data;
49b6d722 3604 size_t count;
3ab651fc 3605 char *data;
49b6d722
LL		 3606
3607 chr = qemu_chr_find(device);
3608 if (!chr) {
1a69278e 3609 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3610 return NULL;
3611 }
3612
3949e594
MA		 3613 if (!chr_is_ringbuf(chr)) {
3614 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3615 return NULL;
3616 }
3617
3618 if (size <= 0) {
3619 error_setg(errp, "size must be greater than zero");
3620 return NULL;
3621 }
3622
3949e594 3623 count = ringbuf_count(chr);
49b6d722 3624 size = size > count ? count : size;
44f3bcd2 3625 read_data = g_malloc(size + 1);
49b6d722 3626
3949e594 3627 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3628
3629 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3630 data = g_base64_encode(read_data, size);
13289fb5 3631 g_free(read_data);
49b6d722 3632 } else {
3949e594
MA		 3633 /*
3634 * FIXME should read only complete, valid UTF-8 characters up
3635 * to @size bytes. Invalid sequences should be replaced by a
3636 * suitable replacement character. Except when (and only
3637 * when) ring buffer lost characters since last read, initial
3638 * continuation characters should be dropped.
3639 */
44f3bcd2 3640 read_data[size] = 0;
3ab651fc 3641 data = (char *)read_data;
49b6d722
LL		 3642 }
3643
3ab651fc 3644 return data;
49b6d722
LL		 3645}
3646
33521634 3647QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3648{
6ea314d9 3649 char host[65], port[33], width[8], height[8];
aeb2c47a 3650 int pos;
7d31544f 3651 const char *p;
191bc01b 3652 QemuOpts *opts;
8be7e7e4 3653 Error *local_err = NULL;
191bc01b 3654
8be7e7e4 3655 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3656 if (local_err) {
33394884 3657 error_report_err(local_err);
191bc01b 3658 return NULL;
8be7e7e4 3659 }
191bc01b 3660
7591c5c1
GH		 3661 if (strstart(filename, "mon:", &p)) {
3662 filename = p;
f43e47db 3663 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3664 if (strcmp(filename, "stdio") == 0) {
3665 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3666 * but pass it to the guest. Handle this only for compat syntax,
3667 * for -chardev syntax we have special option for this.
3668 * This is what -nographic did, redirecting+muxing serial+monitor
3669 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3670 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3671 }
7591c5c1
GH		 3672 }
3673
f0457e8d
GH		 3674 if (strcmp(filename, "null") == 0 ||
3675 strcmp(filename, "pty") == 0 ||
3676 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3677 strcmp(filename, "braille") == 0 ||
5692399f 3678 strcmp(filename, "testdev") == 0 ||
f0457e8d 3679 strcmp(filename, "stdio") == 0) {
f43e47db 3680 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3681 return opts;
3682 }
6ea314d9 3683 if (strstart(filename, "vc", &p)) {
f43e47db 3684 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3685 if (*p == ':') {
49aa4058 3686 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3687 /* pixels */
f43e47db
MA		 3688 qemu_opt_set(opts, "width", width, &error_abort);
3689 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3690 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3691 /* chars */
f43e47db
MA		 3692 qemu_opt_set(opts, "cols", width, &error_abort);
3693 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3694 } else {
3695 goto fail;
3696 }
3697 }
3698 return opts;
3699 }
d6c983cd 3700 if (strcmp(filename, "con:") == 0) {
f43e47db 3701 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3702 return opts;
3703 }
48b76496 3704 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3705 qemu_opt_set(opts, "backend", "serial", &error_abort);
3706 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3707 return opts;
3708 }
7d31544f 3709 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3710 qemu_opt_set(opts, "backend", "file", &error_abort);
3711 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3712 return opts;
3713 }
3714 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3715 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3716 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3717 return opts;
3718 }
aeb2c47a
GH		 3719 if (strstart(filename, "tcp:", &p) ||
3720 strstart(filename, "telnet:", &p)) {
3721 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3722 host[0] = 0;
3723 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3724 goto fail;
3725 }
f43e47db
MA		 3726 qemu_opt_set(opts, "backend", "socket", &error_abort);
3727 qemu_opt_set(opts, "host", host, &error_abort);
3728 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3729 if (p[pos] == ',') {
dc523cd3
MA		 3730 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3731 if (local_err) {
3732 error_report_err(local_err);
aeb2c47a 3733 goto fail;
dc523cd3 3734 }
aeb2c47a
GH		 3735 }
3736 if (strstart(filename, "telnet:", &p))
f43e47db 3737 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3738 return opts;
3739 }
7e1b35b4 3740 if (strstart(filename, "udp:", &p)) {
f43e47db 3741 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3742 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3743 host[0] = 0;
39324ca4 3744 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3745 goto fail;
3746 }
3747 }
f43e47db
MA		 3748 qemu_opt_set(opts, "host", host, &error_abort);
3749 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3750 if (p[pos] == '@') {
3751 p += pos + 1;
3752 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3753 host[0] = 0;
3754 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3755 goto fail;
3756 }
3757 }
f43e47db
MA		 3758 qemu_opt_set(opts, "localaddr", host, &error_abort);
3759 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3760 }
3761 return opts;
3762 }
aeb2c47a 3763 if (strstart(filename, "unix:", &p)) {
f43e47db 3764 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3765 qemu_opts_do_parse(opts, p, "path", &local_err);
3766 if (local_err) {
3767 error_report_err(local_err);
aeb2c47a 3768 goto fail;
dc523cd3 3769 }
aeb2c47a
GH		 3770 return opts;
3771 }
48b76496
GH		 3772 if (strstart(filename, "/dev/parport", NULL) ||
3773 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3774 qemu_opt_set(opts, "backend", "parport", &error_abort);
3775 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3776 return opts;
3777 }
3778 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3779 qemu_opt_set(opts, "backend", "tty", &error_abort);
3780 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3781 return opts;
3782 }
191bc01b 3783
aeb2c47a 3784fail:
191bc01b
GH		 3785 qemu_opts_del(opts);
3786 return NULL;
3787}
3788
21a933ea 3789void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3790{
3791 const char *logfile = qemu_opt_get(opts, "logfile");
3792
3793 backend->has_logfile = logfile != NULL;
3794 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3795
3796 backend->has_logappend = true;
3797 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3798}
3799
3800
846e2e49
GH		 3801static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3802 Error **errp)
3803{
3804 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3805 ChardevFile *file;
846e2e49
GH		 3806
3807 if (path == NULL) {
3808 error_setg(errp, "chardev: file: no filename given");
3809 return;
3810 }
32bafa8f 3811 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3812 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3813 file->out = g_strdup(path);
31e38a22 3814
f194a1ae
EB		 3815 file->has_append = true;
3816 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3817}
3818
7c358031
GH		 3819static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3820 Error **errp)
3821{
f194a1ae
EB		 3822 ChardevStdio *stdio;
3823
32bafa8f 3824 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3825 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3826 stdio->has_signal = true;
3827 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3828}
3829
6511d396 3830#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3831static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3832 Error **errp)
3833{
3834 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3835 ChardevHostdev *serial;
0f1cb51d
GH		 3836
3837 if (device == NULL) {
3838 error_setg(errp, "chardev: serial/tty: no device path given");
3839 return;
3840 }
32bafa8f 3841 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3842 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3843 serial->device = g_strdup(device);
0f1cb51d 3844}
6511d396 3845#endif
0f1cb51d 3846
38bfb1a6 3847#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3848static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3849 Error **errp)
3850{
3851 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3852 ChardevHostdev *parallel;
dc375097
GH		 3853
3854 if (device == NULL) {
3855 error_setg(errp, "chardev: parallel: no device path given");
3856 return;
3857 }
32bafa8f 3858 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3859 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3860 parallel->device = g_strdup(device);
dc375097 3861}
38bfb1a6 3862#endif
dc375097 3863
548cbb36
GH		 3864static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3865 Error **errp)
3866{
3867 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3868 ChardevHostdev *dev;
548cbb36
GH		 3869
3870 if (device == NULL) {
3871 error_setg(errp, "chardev: pipe: no device path given");
3872 return;
3873 }
32bafa8f 3874 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3875 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3876 dev->device = g_strdup(device);
548cbb36
GH		 3877}
3878
4f57378f
MA		 3879static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3880 Error **errp)
1da48c65
GH		 3881{
3882 int val;
f194a1ae 3883 ChardevRingbuf *ringbuf;
1da48c65 3884
32bafa8f 3885 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3886 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3887
0f953051 3888 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3889 if (val != 0) {
f194a1ae
EB		 3890 ringbuf->has_size = true;
3891 ringbuf->size = val;
1da48c65
GH		 3892 }
3893}
3894
bb6fb7c0
GH		 3895static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3896 Error **errp)
3897{
3898 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3899 ChardevMux *mux;
bb6fb7c0
GH		 3900
3901 if (chardev == NULL) {
3902 error_setg(errp, "chardev: mux: no chardev given");
3903 return;
3904 }
32bafa8f 3905 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3906 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3907 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3908}
3909
dafd325d
PM		 3910static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3911 Error **errp)
3912{
3913 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3914 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3915 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3916 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3917 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3918 const char *path = qemu_opt_get(opts, "path");
3919 const char *host = qemu_opt_get(opts, "host");
3920 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3921 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3922 SocketAddress *addr;
f194a1ae 3923 ChardevSocket *sock;
dafd325d
PM		 3924
3925 if (!path) {
3926 if (!host) {
3927 error_setg(errp, "chardev: socket: no host given");
3928 return;
3929 }
3930 if (!port) {
3931 error_setg(errp, "chardev: socket: no port given");
3932 return;
3933 }
a8fb5427
DB		 3934 } else {
3935 if (tls_creds) {
3936 error_setg(errp, "TLS can only be used over TCP socket");
3937 return;
3938 }
dafd325d
PM		 3939 }
3940
32bafa8f 3941 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3942 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3943
f194a1ae
EB		 3944 sock->has_nodelay = true;
3945 sock->nodelay = do_nodelay;
3946 sock->has_server = true;
3947 sock->server = is_listen;
3948 sock->has_telnet = true;
3949 sock->telnet = is_telnet;
3950 sock->has_wait = true;
3951 sock->wait = is_waitconnect;
3952 sock->has_reconnect = true;
3953 sock->reconnect = reconnect;
3954 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3955
3956 addr = g_new0(SocketAddress, 1);
3957 if (path) {
0399293e 3958 UnixSocketAddress *q_unix;
130257dc 3959 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3960 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3961 q_unix->path = g_strdup(path);
dafd325d 3962 } else {
130257dc 3963 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3964 addr->u.inet.data = g_new(InetSocketAddress, 1);
3965 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3966 .host = g_strdup(host),
3967 .port = g_strdup(port),
3968 .has_to = qemu_opt_get(opts, "to"),
3969 .to = qemu_opt_get_number(opts, "to", 0),
3970 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3971 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3972 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3973 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3974 };
dafd325d 3975 }
f194a1ae 3976 sock->addr = addr;
dafd325d
PM		 3977}
3978
90a14bfe
PM		 3979static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3980 Error **errp)
3981{
3982 const char *host = qemu_opt_get(opts, "host");
3983 const char *port = qemu_opt_get(opts, "port");
3984 const char *localaddr = qemu_opt_get(opts, "localaddr");
3985 const char *localport = qemu_opt_get(opts, "localport");
3986 bool has_local = false;
3987 SocketAddress *addr;
f194a1ae 3988 ChardevUdp *udp;
90a14bfe
PM		 3989
3990 if (host == NULL || strlen(host) == 0) {
3991 host = "localhost";
3992 }
3993 if (port == NULL || strlen(port) == 0) {
3994 error_setg(errp, "chardev: udp: remote port not specified");
3995 return;
3996 }
3997 if (localport == NULL || strlen(localport) == 0) {
3998 localport = "0";
3999 } else {
4000 has_local = true;
4001 }
4002 if (localaddr == NULL || strlen(localaddr) == 0) {
4003 localaddr = "";
4004 } else {
4005 has_local = true;
4006 }
4007
32bafa8f 4008 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 4009 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 4010
4011 addr = g_new0(SocketAddress, 1);
130257dc 4012 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4013 addr->u.inet.data = g_new(InetSocketAddress, 1);
4014 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4015 .host = g_strdup(host),
4016 .port = g_strdup(port),
4017 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
4018 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
4019 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
4020 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
4021 };
f194a1ae 4022 udp->remote = addr;
90a14bfe
PM		 4023
4024 if (has_local) {
f194a1ae 4025 udp->has_local = true;
90a14bfe 4026 addr = g_new0(SocketAddress, 1);
130257dc 4027 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 4028 addr->u.inet.data = g_new(InetSocketAddress, 1);
4029 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 4030 .host = g_strdup(localaddr),
4031 .port = g_strdup(localport),
4032 };
f194a1ae 4033 udp->local = addr;
90a14bfe
PM		 4034 }
4035}
4036
d654f34e 4037typedef struct CharDriver {
191bc01b 4038 const char *name;
99aec012 4039 ChardevBackendKind kind;
2c5f4882 4040 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 4041 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
4042 ChardevReturn *ret, Error **errp);
d654f34e
AL		 4043} CharDriver;
4044
4045static GSList *backends;
4046
e4d50d47 4047void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 4048 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
4049 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
4050 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 4051{
4052 CharDriver *s;
4053
4054 s = g_malloc0(sizeof(*s));
4055 s->name = g_strdup(name);
4056 s->kind = kind;
4057 s->parse = parse;
4ca17281 4058 s->create = create;
2c5f4882
GH		 4059
4060 backends = g_slist_append(backends, s);
4061}
4062
f69554b9 4063CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
b4948be9 4064 Error **errp)
191bc01b 4065{
0aff637e 4066 Error *local_err = NULL;
d654f34e 4067 CharDriver *cd;
191bc01b 4068 CharDriverState *chr;
d654f34e 4069 GSList *i;
a61ae7f8
PM		 4070 ChardevReturn *ret = NULL;
4071 ChardevBackend *backend;
4072 const char *id = qemu_opts_id(opts);
4073 char *bid = NULL;
191bc01b 4074
1bbd185f 4075 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 4076 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 4077 qemu_opts_id(opts));
2274ae9d 4078 goto err;
1bbd185f 4079 }
517b3d40
LM		 4080
4081 if (is_help_option(qemu_opt_get(opts, "backend"))) {
4082 fprintf(stderr, "Available chardev backend types:\n");
4083 for (i = backends; i; i = i->next) {
4084 cd = i->data;
4085 fprintf(stderr, "%s\n", cd->name);
4086 }
4087 exit(!is_help_option(qemu_opt_get(opts, "backend")));
4088 }
4089
4090 if (id == NULL) {
4091 error_setg(errp, "chardev: no id specified");
4092 goto err;
4093 }
4094
d654f34e
AL		 4095 for (i = backends; i; i = i->next) {
4096 cd = i->data;
4097
4098 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 4099 break;
d654f34e 4100 }
191bc01b 4101 }
d654f34e 4102 if (i == NULL) {
312fd5f2 4103 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 4104 qemu_opt_get(opts, "backend"));
e668287d 4105 goto err;
191bc01b
GH		 4106 }
4107
a61ae7f8 4108 backend = g_new0(ChardevBackend, 1);
edb2fb3c 4109
a61ae7f8
PM		 4110 if (qemu_opt_get_bool(opts, "mux", 0)) {
4111 bid = g_strdup_printf("%s-base", id);
4112 }
2c5f4882 4113
a61ae7f8 4114 chr = NULL;
130257dc 4115 backend->type = cd->kind;
a61ae7f8
PM		 4116 if (cd->parse) {
4117 cd->parse(opts, backend, &local_err);
4118 if (local_err) {
4119 error_propagate(errp, local_err);
2c5f4882
GH		 4120 goto qapi_out;
4121 }
d0d7708b
DB		 4122 } else {
4123 ChardevCommon *cc = g_new0(ChardevCommon, 1);
4124 qemu_chr_parse_common(opts, cc);
32bafa8f 4125 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 4126 }
d0d7708b 4127
a61ae7f8
PM		 4128 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
4129 if (!ret) {
4130 goto qapi_out;
191bc01b
GH		 4131 }
4132
a61ae7f8
PM		 4133 if (bid) {
4134 qapi_free_ChardevBackend(backend);
4135 qapi_free_ChardevReturn(ret);
4136 backend = g_new0(ChardevBackend, 1);
32bafa8f 4137 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 4138 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 4139 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 4140 ret = qmp_chardev_add(id, backend, errp);
4141 if (!ret) {
4142 chr = qemu_chr_find(bid);
4143 qemu_chr_delete(chr);
4144 chr = NULL;
4145 goto qapi_out;
4146 }
bd5c51ee 4147 }
7591c5c1 4148
a61ae7f8 4149 chr = qemu_chr_find(id);
a61ae7f8
PM		 4150
4151qapi_out:
4152 qapi_free_ChardevBackend(backend);
4153 qapi_free_ChardevReturn(ret);
4154 g_free(bid);
191bc01b 4155 return chr;
2274ae9d
GH		 4156
4157err:
2274ae9d 4158 return NULL;
191bc01b
GH		 4159}
4160
b4948be9 4161CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename)
6f97dba0
AL		 4162{
4163 const char *p;
4164 CharDriverState *chr;
191bc01b 4165 QemuOpts *opts;
bd2d80b2 4166 Error *err = NULL;
191bc01b 4167
c845f401
GH		 4168 if (strstart(filename, "chardev:", &p)) {
4169 return qemu_chr_find(p);
4170 }
4171
191bc01b 4172 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 4173 if (!opts)
4174 return NULL;
6f97dba0 4175
b4948be9 4176 chr = qemu_chr_new_from_opts(opts, &err);
84d18f06 4177 if (err) {
565f65d2 4178 error_report_err(err);
bd2d80b2 4179 }
7e1b35b4
GH		 4180 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
4181 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0 4182 }
0a73336d 4183 qemu_opts_del(opts);
6f97dba0
AL		 4184 return chr;
4185}
4186
b4948be9 4187CharDriverState *qemu_chr_new(const char *label, const char *filename)
33577b47
PD		 4188{
4189 CharDriverState *chr;
b4948be9 4190 chr = qemu_chr_new_noreplay(label, filename);
33577b47
PD		 4191 if (chr) {
4192 chr->replay = replay_mode != REPLAY_MODE_NONE;
4193 if (chr->replay && chr->chr_ioctl) {
4194 fprintf(stderr,
4195 "Replay: ioctl is not supported for serial devices yet\n");
4196 }
4197 replay_register_char_driver(chr);
4198 }
4199 return chr;
4200}
4201
5345fdb4 4202void qemu_chr_fe_set_echo(CharBackend *be, bool echo)
c48855e1 4203{
5345fdb4
MAL		 4204 CharDriverState *chr = be->chr;
4205
fa394ed6 4206 if (chr && chr->chr_set_echo) {
c48855e1
PB		 4207 chr->chr_set_echo(chr, echo);
4208 }
4209}
4210
5345fdb4 4211void qemu_chr_fe_set_open(CharBackend *be, int fe_open)
7c32c4fe 4212{
5345fdb4
MAL		 4213 CharDriverState *chr = be->chr;
4214
fa394ed6
MAL		 4215 if (!chr) {
4216 return;
4217 }
4218
8e25daa8 4219 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 4220 return;
4221 }
8e25daa8 4222 chr->fe_open = fe_open;
574b711a
HG		 4223 if (chr->chr_set_fe_open) {
4224 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4225 }
4226}
4227
5345fdb4 4228void qemu_chr_fe_event(CharBackend *be, int event)
d61b0c9a 4229{
5345fdb4
MAL		 4230 CharDriverState *chr = be->chr;
4231
fa394ed6 4232 if (chr && chr->chr_fe_event) {
d61b0c9a
MAL		 4233 chr->chr_fe_event(chr, event);
4234 }
4235}
4236
5345fdb4 4237guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
6f1de6b7 4238 GIOFunc func, void *user_data)
23673ca7 4239{
5345fdb4 4240 CharDriverState *s = be->chr;
23673ca7
AL		 4241 GSource *src;
4242 guint tag;
4243
fa394ed6 4244 if (!s || s->chr_add_watch == NULL) {
6f1de6b7 4245 return 0;
23673ca7
AL		 4246 }
4247
4248 src = s->chr_add_watch(s, cond);
62c339c5 4249 if (!src) {
6f1de6b7 4250 return 0;
62c339c5
PB		 4251 }
4252
23673ca7
AL		 4253 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4254 tag = g_source_attach(src, NULL);
4255 g_source_unref(src);
4256
4257 return tag;
4258}
4259
5345fdb4 4260void qemu_chr_fe_disconnect(CharBackend *be)
7d9d17f7 4261{
5345fdb4
MAL		 4262 CharDriverState *chr = be->chr;
4263
fa394ed6 4264 if (chr && chr->chr_disconnect) {
7d9d17f7
TM		 4265 chr->chr_disconnect(chr);
4266 }
4267}
4268
d0d7708b 4269static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4270{
a4afa548
MAL		 4271 if (chr->be) {
4272 chr->be->chr = NULL;
4273 }
7267c094
AL		 4274 g_free(chr->filename);
4275 g_free(chr->label);
d0d7708b
DB		 4276 if (chr->logfd != -1) {
4277 close(chr->logfd);
4278 }
fefd749c 4279 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4280 g_free(chr);
6f97dba0
AL		 4281}
4282
d0d7708b
DB		 4283void qemu_chr_free(CharDriverState *chr)
4284{
72ac8762
MAL		 4285 if (chr->chr_free) {
4286 chr->chr_free(chr);
d0d7708b
DB		 4287 }
4288 qemu_chr_free_common(chr);
4289}
4290
1ad78ea5
MAL		 4291void qemu_chr_delete(CharDriverState *chr)
4292{
4293 QTAILQ_REMOVE(&chardevs, chr, next);
4294 qemu_chr_free(chr);
4295}
4296
c5a415a0 4297ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4298{
c5a415a0 4299 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4300 CharDriverState *chr;
4301
72cf2d4f 4302 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4303 ChardevInfoList *info = g_malloc0(sizeof(*info));
4304 info->value = g_malloc0(sizeof(*info->value));
4305 info->value->label = g_strdup(chr->label);
4306 info->value->filename = g_strdup(chr->filename);
32a97ea1 4307 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4308
4309 info->next = chr_list;
4310 chr_list = info;
6f97dba0 4311 }
588b3832 4312
c5a415a0 4313 return chr_list;
6f97dba0 4314}
c845f401 4315
77d1c3c6
MK		 4316ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4317{
4318 ChardevBackendInfoList *backend_list = NULL;
4319 CharDriver *c = NULL;
4320 GSList *i = NULL;
4321
4322 for (i = backends; i; i = i->next) {
4323 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4324 c = i->data;
4325 info->value = g_malloc0(sizeof(*info->value));
4326 info->value->name = g_strdup(c->name);
4327
4328 info->next = backend_list;
4329 backend_list = info;
4330 }
4331
4332 return backend_list;
4333}
4334
c845f401
GH		 4335CharDriverState *qemu_chr_find(const char *name)
4336{
4337 CharDriverState *chr;
4338
72cf2d4f 4339 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4340 if (strcmp(chr->label, name) != 0)
4341 continue;
4342 return chr;
4343 }
4344 return NULL;
4345}
0beb4942 4346
4d454574
PB		 4347QemuOptsList qemu_chardev_opts = {
4348 .name = "chardev",
4349 .implied_opt_name = "backend",
4350 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4351 .desc = {
4352 {
4353 .name = "backend",
4354 .type = QEMU_OPT_STRING,
4355 },{
4356 .name = "path",
4357 .type = QEMU_OPT_STRING,
4358 },{
4359 .name = "host",
4360 .type = QEMU_OPT_STRING,
4361 },{
4362 .name = "port",
4363 .type = QEMU_OPT_STRING,
4364 },{
4365 .name = "localaddr",
4366 .type = QEMU_OPT_STRING,
4367 },{
4368 .name = "localport",
4369 .type = QEMU_OPT_STRING,
4370 },{
4371 .name = "to",
4372 .type = QEMU_OPT_NUMBER,
4373 },{
4374 .name = "ipv4",
4375 .type = QEMU_OPT_BOOL,
4376 },{
4377 .name = "ipv6",
4378 .type = QEMU_OPT_BOOL,
4379 },{
4380 .name = "wait",
4381 .type = QEMU_OPT_BOOL,
4382 },{
4383 .name = "server",
4384 .type = QEMU_OPT_BOOL,
4385 },{
4386 .name = "delay",
4387 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4388 },{
4389 .name = "reconnect",
4390 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4391 },{
4392 .name = "telnet",
4393 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4394 },{
4395 .name = "tls-creds",
4396 .type = QEMU_OPT_STRING,
4d454574
PB		 4397 },{
4398 .name = "width",
4399 .type = QEMU_OPT_NUMBER,
4400 },{
4401 .name = "height",
4402 .type = QEMU_OPT_NUMBER,
4403 },{
4404 .name = "cols",
4405 .type = QEMU_OPT_NUMBER,
4406 },{
4407 .name = "rows",
4408 .type = QEMU_OPT_NUMBER,
4409 },{
4410 .name = "mux",
4411 .type = QEMU_OPT_BOOL,
4412 },{
4413 .name = "signal",
4414 .type = QEMU_OPT_BOOL,
4415 },{
4416 .name = "name",
4417 .type = QEMU_OPT_STRING,
4418 },{
4419 .name = "debug",
4420 .type = QEMU_OPT_NUMBER,
51767e7c 4421 },{
3949e594 4422 .name = "size",
de1cc36e 4423 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4424 },{
4425 .name = "chardev",
4426 .type = QEMU_OPT_STRING,
31e38a22
OK		 4427 },{
4428 .name = "append",
4429 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4430 },{
4431 .name = "logfile",
4432 .type = QEMU_OPT_STRING,
4433 },{
4434 .name = "logappend",
4435 .type = QEMU_OPT_BOOL,
4d454574
PB		 4436 },
4437 { /* end of list */ }
4438 },
4439};
f1a1a356 4440
ffbdbe59
GH		 4441#ifdef _WIN32
4442
fd5b036c
PB		 4443static CharDriverState *qmp_chardev_open_file(const char *id,
4444 ChardevBackend *backend,
4445 ChardevReturn *ret,
4446 Error **errp)
ffbdbe59 4447{
32bafa8f 4448 ChardevFile *file = backend->u.file.data;
f194a1ae 4449 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59 4450 HANDLE out;
c025f689
SW		 4451 DWORD accessmode;
4452 DWORD flags;
ffbdbe59 4453
e859eda5 4454 if (file->has_in) {
ffbdbe59
GH		 4455 error_setg(errp, "input file not supported");
4456 return NULL;
4457 }
4458
c025f689
SW		 4459 if (file->has_append && file->append) {
4460 /* Append to file if it already exists. */
4461 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4462 flags = OPEN_ALWAYS;
4463 } else {
4464 /* Truncate file if it already exists. */
4465 accessmode = GENERIC_WRITE;
4466 flags = CREATE_ALWAYS;
4467 }
4468
4469 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4470 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4471 if (out == INVALID_HANDLE_VALUE) {
4472 error_setg(errp, "open %s failed", file->out);
4473 return NULL;
4474 }
d0d7708b 4475 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4476}
4477
6511d396
PB		 4478static CharDriverState *qmp_chardev_open_serial(const char *id,
4479 ChardevBackend *backend,
4480 ChardevReturn *ret,
d36b2b90 4481 Error **errp)
d59044ef 4482{
32bafa8f 4483 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4484 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4485 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4486}
4487
ffbdbe59
GH		 4488#else /* WIN32 */
4489
4490static int qmp_chardev_open_file_source(char *src, int flags,
4491 Error **errp)
4492{
4493 int fd = -1;
4494
4495 TFR(fd = qemu_open(src, flags, 0666));
4496 if (fd == -1) {
20c39760 4497 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4498 }
4499 return fd;
4500}
4501
fd5b036c
PB		 4502static CharDriverState *qmp_chardev_open_file(const char *id,
4503 ChardevBackend *backend,
4504 ChardevReturn *ret,
4505 Error **errp)
ffbdbe59 4506{
32bafa8f 4507 ChardevFile *file = backend->u.file.data;
f194a1ae 4508 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4509 int flags, in = -1, out;
ffbdbe59 4510
31e38a22
OK		 4511 flags = O_WRONLY | O_CREAT | O_BINARY;
4512 if (file->has_append && file->append) {
4513 flags |= O_APPEND;
4514 } else {
4515 flags |= O_TRUNC;
4516 }
4517
ffbdbe59 4518 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4519 if (out < 0) {
ffbdbe59
GH		 4520 return NULL;
4521 }
4522
e859eda5 4523 if (file->has_in) {
ffbdbe59
GH		 4524 flags = O_RDONLY;
4525 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4526 if (in < 0) {
ffbdbe59
GH		 4527 qemu_close(out);
4528 return NULL;
4529 }
4530 }
4531
d0d7708b 4532 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4533}
4534
d809ab95 4535#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4536static CharDriverState *qmp_chardev_open_serial(const char *id,
4537 ChardevBackend *backend,
4538 ChardevReturn *ret,
d36b2b90 4539 Error **errp)
d59044ef 4540{
32bafa8f 4541 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4542 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4543 int fd;
4544
4545 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4546 if (fd < 0) {
d36b2b90 4547 return NULL;
39099991 4548 }
f9e8cacc 4549 qemu_set_nonblock(fd);
d0d7708b 4550 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4551}
6511d396 4552#endif
d36b2b90 4553
d809ab95 4554#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4555static CharDriverState *qmp_chardev_open_parallel(const char *id,
4556 ChardevBackend *backend,
4557 ChardevReturn *ret,
d36b2b90
MA		 4558 Error **errp)
4559{
32bafa8f 4560 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4561 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4562 int fd;
4563
4564 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4565 if (fd < 0) {
d59044ef
GH		 4566 return NULL;
4567 }
d0d7708b 4568 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4569}
d809ab95 4570#endif
d59044ef 4571
ffbdbe59
GH		 4572#endif /* WIN32 */
4573
5dd1f02b
CM		 4574static gboolean socket_reconnect_timeout(gpointer opaque)
4575{
4576 CharDriverState *chr = opaque;
4577 TCPCharDriver *s = chr->opaque;
317856ca 4578 QIOChannelSocket *sioc;
5dd1f02b
CM		 4579
4580 s->reconnect_timer = 0;
4581
4582 if (chr->be_open) {
4583 return false;
4584 }
4585
317856ca
DB		 4586 sioc = qio_channel_socket_new();
4587 qio_channel_socket_connect_async(sioc, s->addr,
4588 qemu_chr_socket_connected,
4589 chr, NULL);
5dd1f02b
CM		 4590
4591 return false;
4592}
4593
dbba8d1b
PB		 4594static CharDriverState *qmp_chardev_open_socket(const char *id,
4595 ChardevBackend *backend,
4596 ChardevReturn *ret,
f6bd5d6e
GH		 4597 Error **errp)
4598{
43ded1a0
CM		 4599 CharDriverState *chr;
4600 TCPCharDriver *s;
32bafa8f 4601 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4602 SocketAddress *addr = sock->addr;
4603 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4604 bool is_listen = sock->has_server ? sock->server : true;
4605 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4606 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4607 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4608 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4609 QIOChannelSocket *sioc = NULL;
43ded1a0 4610
d0d7708b
DB		 4611 chr = qemu_chr_alloc(common, errp);
4612 if (!chr) {
4613 return NULL;
4614 }
2d528d45 4615 s = g_new0(TCPCharDriver, 1);
43ded1a0 4616
130257dc 4617 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4618 s->is_listen = is_listen;
4619 s->is_telnet = is_telnet;
43ded1a0 4620 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4621 if (sock->tls_creds) {
4622 Object *creds;
4623 creds = object_resolve_path_component(
4624 object_get_objects_root(), sock->tls_creds);
4625 if (!creds) {
4626 error_setg(errp, "No TLS credentials with id '%s'",
4627 sock->tls_creds);
4628 goto error;
4629 }
4630 s->tls_creds = (QCryptoTLSCreds *)
4631 object_dynamic_cast(creds,
4632 TYPE_QCRYPTO_TLS_CREDS);
4633 if (!s->tls_creds) {
4634 error_setg(errp, "Object with id '%s' is not TLS credentials",
4635 sock->tls_creds);
4636 goto error;
4637 }
4638 object_ref(OBJECT(s->tls_creds));
4639 if (is_listen) {
4640 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4641 error_setg(errp, "%s",
4642 "Expected TLS credentials for server endpoint");
4643 goto error;
4644 }
4645 } else {
4646 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4647 error_setg(errp, "%s",
4648 "Expected TLS credentials for client endpoint");
4649 goto error;
4650 }
4651 }
4652 }
4653
37f9e0a2 4654 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0 4655
0a73336d
DB		 4656 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
4657 if (s->is_unix) {
4658 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
4659 }
4660
43ded1a0 4661 chr->opaque = s;
d7a04fd7 4662 chr->chr_wait_connected = tcp_chr_wait_connected;
43ded1a0
CM		 4663 chr->chr_write = tcp_chr_write;
4664 chr->chr_sync_read = tcp_chr_sync_read;
72ac8762 4665 chr->chr_free = tcp_chr_free;
7d9d17f7 4666 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4667 chr->get_msgfds = tcp_get_msgfds;
4668 chr->set_msgfds = tcp_set_msgfds;
4669 chr->chr_add_client = tcp_chr_add_client;
4670 chr->chr_add_watch = tcp_chr_add_watch;
4671 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4672 /* be isn't opened until we get a connection */
4673 chr->explicit_be_open = true;
4674
0ff0fad2
DB		 4675 chr->filename = SocketAddress_to_str("disconnected:",
4676 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4677
4678 if (is_listen) {
43ded1a0
CM		 4679 if (is_telnet) {
4680 s->do_telnetopt = 1;
4681 }
5dd1f02b
CM		 4682 } else if (reconnect > 0) {
4683 s->reconnect_time = reconnect;
f6bd5d6e 4684 }
43ded1a0 4685
5008e5b7 4686 if (s->reconnect_time) {
d7a04fd7 4687 sioc = qio_channel_socket_new();
317856ca
DB		 4688 qio_channel_socket_connect_async(sioc, s->addr,
4689 qemu_chr_socket_connected,
4690 chr, NULL);
08b758b4 4691 } else {
d7a04fd7
MAL		 4692 if (s->is_listen) {
4693 sioc = qio_channel_socket_new();
4694 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4695 goto error;
4696 }
4697 s->listen_ioc = sioc;
4698 if (is_waitconnect &&
4699 qemu_chr_wait_connected(chr, errp) < 0) {
4700 goto error;
4701 }
4702 if (!s->ioc) {
4703 s->listen_tag = qio_channel_add_watch(
4704 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4705 tcp_chr_accept, chr, NULL);
4706 }
4707 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4708 goto error;
4709 }
43ded1a0
CM		 4710 }
4711
4712 return chr;
a8fb5427
DB		 4713
4714 error:
08b758b4
DB		 4715 if (sioc) {
4716 object_unref(OBJECT(sioc));
4717 }
a8fb5427
DB		 4718 if (s->tls_creds) {
4719 object_unref(OBJECT(s->tls_creds));
4720 }
4721 g_free(s);
4722 qemu_chr_free_common(chr);
4723 return NULL;
f6bd5d6e
GH		 4724}
4725
e79b80da
PB		 4726static CharDriverState *qmp_chardev_open_udp(const char *id,
4727 ChardevBackend *backend,
4728 ChardevReturn *ret,
08d0ab3f 4729 Error **errp)
3ecc059d 4730{
32bafa8f 4731 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4732 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4733 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4734
9894dc0c 4735 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4736 udp->local, udp->remote,
9894dc0c
DB		 4737 errp) < 0) {
4738 object_unref(OBJECT(sioc));
3ecc059d
GH		 4739 return NULL;
4740 }
9894dc0c 4741 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4742}
4743
0a73336d
DB		 4744
4745bool qemu_chr_has_feature(CharDriverState *chr,
4746 CharDriverFeature feature)
4747{
4748 return test_bit(feature, chr->features);
4749}
4750
4751void qemu_chr_set_feature(CharDriverState *chr,
4752 CharDriverFeature feature)
4753{
4754 return set_bit(feature, chr->features);
4755}
4756
f1a1a356
GH		 4757ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4758 Error **errp)
4759{
4760 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4761 CharDriverState *chr = NULL;
eaeba653 4762 Error *local_err = NULL;
4ca17281
PB		 4763 GSList *i;
4764 CharDriver *cd;
f1a1a356
GH		 4765
4766 chr = qemu_chr_find(id);
4767 if (chr) {
4768 error_setg(errp, "Chardev '%s' already exists", id);
4769 g_free(ret);
4770 return NULL;
4771 }
4772
4ca17281
PB		 4773 for (i = backends; i; i = i->next) {
4774 cd = i->data;
4775
130257dc 4776 if (cd->kind == backend->type) {
4ca17281
PB		 4777 chr = cd->create(id, backend, ret, &local_err);
4778 if (local_err) {
4779 error_propagate(errp, local_err);
4780 goto out_error;
4781 }
4782 break;
4783 }
4784 }
4785
4786 if (chr == NULL) {
1c3af0f4
PB		 4787 assert(!i);
4788 error_setg(errp, "chardev backend not available");
4789 goto out_error;
eaeba653
PB		 4790 }
4791
4792 chr->label = g_strdup(id);
4793 chr->avail_connections =
130257dc 4794 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4795 if (!chr->filename) {
130257dc 4796 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4797 }
eaeba653
PB		 4798 if (!chr->explicit_be_open) {
4799 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4800 }
4801 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4802 return ret;
4803
4804out_error:
4805 g_free(ret);
4806 return NULL;
f1a1a356
GH		 4807}
4808
4809void qmp_chardev_remove(const char *id, Error **errp)
4810{
4811 CharDriverState *chr;
4812
4813 chr = qemu_chr_find(id);
8108fd3e 4814 if (chr == NULL) {
f1a1a356
GH		 4815 error_setg(errp, "Chardev '%s' not found", id);
4816 return;
4817 }
a4afa548 4818 if (qemu_chr_is_busy(chr)) {
f1a1a356
GH		 4819 error_setg(errp, "Chardev '%s' is busy", id);
4820 return;
4821 }
33577b47
PD		 4822 if (chr->replay) {
4823 error_setg(errp,
4824 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4825 return;
4826 }
f1a1a356
GH		 4827 qemu_chr_delete(chr);
4828}
d654f34e 4829
aa5cb7f5 4830void qemu_chr_cleanup(void)
c1111a24
MAL		 4831{
4832 CharDriverState *chr, *tmp;
4833
4834 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4835 qemu_chr_delete(chr);
4836 }
4837}
4838
d654f34e
AL		 4839static void register_types(void)
4840{
4ca17281 4841 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4842 qemu_chr_open_null);
e4d50d47 4843 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4844 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4845 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4846 qmp_chardev_open_udp);
e4d50d47 4847 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4848 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4849 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4850 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4851 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4852 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4853#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4854 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4855 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4856 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4857 qemu_chr_parse_serial, qmp_chardev_open_serial);
4858#endif
38bfb1a6 4859#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4860 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4861 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4862 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4863 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4864#endif
c2e75a43 4865#ifdef HAVE_CHARDEV_PTY
4ca17281 4866 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4867 qemu_chr_open_pty);
4868#endif
122e5ed4 4869#ifdef _WIN32
4ca17281 4870 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4871 qemu_chr_open_win_con);
4872#endif
e4d50d47 4873 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4874 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4875 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4876 qemu_chr_open_mux);
c11ed966 4877 /* Bug-compatibility: */
e4d50d47 4878 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4879 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4880 /* this must be done after machine init, since we register FEs with muxes
4881 * as part of realize functions like serial_isa_realizefn when -nographic
4882 * is specified
4883 */
4884 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4885}
4886
4887type_init(register_types);
Mirror of https://git.qemu.org/git/qemu.git