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Update version for 2.7.1 release
[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"
6f97dba0 42
6f97dba0
AL		 43#include <zlib.h>
44
45#ifndef _WIN32
46#include <sys/times.h>
47#include <sys/wait.h>
48#include <termios.h>
6f97dba0 49#include <sys/ioctl.h>
24646c7e 50#include <sys/resource.h>
6f97dba0
AL		 51#include <sys/socket.h>
52#include <netinet/in.h>
24646c7e 53#include <net/if.h>
24646c7e 54#include <arpa/inet.h>
6f97dba0
AL		 55#include <netdb.h>
56#include <sys/select.h>
71e72a19 57#ifdef CONFIG_BSD
3294ce18
MT		 58#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
59#include <dev/ppbus/ppi.h>
60#include <dev/ppbus/ppbconf.h>
c5e97233 61#elif defined(__DragonFly__)
c5e97233
BS		 62#include <dev/misc/ppi/ppi.h>
63#include <bus/ppbus/ppbconf.h>
6f97dba0 64#endif
bbe813a2 65#else
6f97dba0 66#ifdef __linux__
6f97dba0
AL		 67#include <linux/ppdev.h>
68#include <linux/parport.h>
69#endif
70#ifdef __sun__
6f97dba0
AL		 71#include <sys/ethernet.h>
72#include <sys/sockio.h>
73#include <netinet/arp.h>
74#include <netinet/in.h>
75#include <netinet/in_systm.h>
76#include <netinet/ip.h>
77#include <netinet/ip_icmp.h> // must come after ip.h
78#include <netinet/udp.h>
79#include <netinet/tcp.h>
6f97dba0
AL		 80#endif
81#endif
82#endif
83
1de7afc9 84#include "qemu/sockets.h"
cbcc6336 85#include "ui/qemu-spice.h"
6f97dba0 86
9bd7854e 87#define READ_BUF_LEN 4096
7b0bfdf5 88#define READ_RETRIES 10
c4095726 89#define TCP_MAX_FDS 16
9bd7854e 90
cfb429cb
CM		 91/***********************************************************/
92/* Socket address helpers */
cfb429cb 93
0ff0fad2
DB		 94static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
95 bool is_listen, bool is_telnet)
16cc4ffe 96{
130257dc 97 switch (addr->type) {
16cc4ffe 98 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 99 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 100 is_telnet ? "telnet" : "tcp",
101 addr->u.inet.data->host,
102 addr->u.inet.data->port,
103 is_listen ? ",server" : "");
16cc4ffe
CM		 104 break;
105 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 106 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 107 addr->u.q_unix.data->path,
0ff0fad2 108 is_listen ? ",server" : "");
16cc4ffe
CM		 109 break;
110 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 111 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 112 is_listen ? ",server" : "");
16cc4ffe
CM		 113 break;
114 default:
115 abort();
116 }
117}
118
0ff0fad2
DB		 119static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
120 struct sockaddr_storage *ps, socklen_t ps_len,
121 bool is_listen, bool is_telnet)
16cc4ffe 122{
01ca519f
CM		 123 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
124 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 125 const char *left = "", *right = "";
126
127 switch (ss->ss_family) {
128#ifndef _WIN32
129 case AF_UNIX:
0ff0fad2
DB		 130 return g_strdup_printf("unix:%s%s",
131 ((struct sockaddr_un *)(ss))->sun_path,
132 is_listen ? ",server" : "");
16cc4ffe
CM		 133#endif
134 case AF_INET6:
135 left = "[";
136 right = "]";
137 /* fall through */
138 case AF_INET:
01ca519f
CM		 139 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
140 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
141 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
142 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 143 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
144 is_telnet ? "telnet" : "tcp",
145 left, shost, right, sserv,
146 is_listen ? ",server" : "",
147 left, phost, right, pserv);
16cc4ffe
CM		 148
149 default:
0ff0fad2 150 return g_strdup_printf("unknown");
16cc4ffe
CM		 151 }
152}
153
6f97dba0
AL		 154/***********************************************************/
155/* character device */
156
72cf2d4f
BS		 157static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
158 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 159
d0d7708b
DB		 160static void qemu_chr_free_common(CharDriverState *chr);
161
162CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 163{
164 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 165 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 166
167 if (backend->has_logfile) {
168 int flags = O_WRONLY | O_CREAT;
169 if (backend->has_logappend &&
170 backend->logappend) {
171 flags |= O_APPEND;
172 } else {
173 flags |= O_TRUNC;
174 }
175 chr->logfd = qemu_open(backend->logfile, flags, 0666);
176 if (chr->logfd < 0) {
177 error_setg_errno(errp, errno,
178 "Unable to open logfile %s",
179 backend->logfile);
180 g_free(chr);
181 return NULL;
182 }
183 } else {
184 chr->logfd = -1;
185 }
186
db39fcf1
PB		 187 return chr;
188}
189
a425d23f 190void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 191{
73cdf3f2
AG		 192 /* Keep track if the char device is open */
193 switch (event) {
194 case CHR_EVENT_OPENED:
16665b94 195 s->be_open = 1;
73cdf3f2
AG		 196 break;
197 case CHR_EVENT_CLOSED:
16665b94 198 s->be_open = 0;
73cdf3f2
AG		 199 break;
200 }
201
6f97dba0
AL		 202 if (!s->chr_event)
203 return;
204 s->chr_event(s->handler_opaque, event);
205}
206
fee204fd 207void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 208{
bd5c51ee 209 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 210}
211
d0d7708b
DB		 212
213/* Not reporting errors from writing to logfile, as logs are
214 * defined to be "best effort" only */
215static void qemu_chr_fe_write_log(CharDriverState *s,
216 const uint8_t *buf, size_t len)
217{
218 size_t done = 0;
219 ssize_t ret;
220
221 if (s->logfd < 0) {
222 return;
223 }
224
225 while (done < len) {
53628efb
DB		 226 retry:
227 ret = write(s->logfd, buf + done, len - done);
228 if (ret == -1 && errno == EAGAIN) {
229 g_usleep(100);
230 goto retry;
231 }
d0d7708b
DB		 232
233 if (ret <= 0) {
234 return;
235 }
236 done += ret;
237 }
238}
239
33577b47
PD		 240static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
241{
242 int res = 0;
243 *offset = 0;
244
245 qemu_mutex_lock(&s->chr_write_lock);
246 while (*offset < len) {
53628efb
DB		 247 retry:
248 res = s->chr_write(s, buf + *offset, len - *offset);
249 if (res < 0 && errno == EAGAIN) {
250 g_usleep(100);
251 goto retry;
252 }
33577b47
PD		 253
254 if (res <= 0) {
255 break;
256 }
257
258 *offset += res;
259 }
260 if (*offset > 0) {
261 qemu_chr_fe_write_log(s, buf, *offset);
262 }
263 qemu_mutex_unlock(&s->chr_write_lock);
264
265 return res;
266}
267
2cc6e0a1 268int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 269{
9005b2a7
PB		 270 int ret;
271
33577b47
PD		 272 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
273 int offset;
274 replay_char_write_event_load(&ret, &offset);
275 assert(offset <= len);
276 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
277 return ret;
278 }
279
9005b2a7
PB		 280 qemu_mutex_lock(&s->chr_write_lock);
281 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 282
283 if (ret > 0) {
284 qemu_chr_fe_write_log(s, buf, ret);
285 }
286
9005b2a7 287 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 288
289 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
290 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
291 }
292
9005b2a7 293 return ret;
6f97dba0
AL		 294}
295
cd18720a
AL		 296int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
297{
33577b47
PD		 298 int offset;
299 int res;
cd18720a 300
33577b47
PD		 301 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
302 replay_char_write_event_load(&res, &offset);
303 assert(offset <= len);
304 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
305 return res;
306 }
cd18720a 307
33577b47 308 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 309
33577b47
PD		 310 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
311 replay_char_write_event_save(res, offset);
cd18720a
AL		 312 }
313
9005b2a7
PB		 314 if (res < 0) {
315 return res;
316 }
cd18720a
AL		 317 return offset;
318}
319
7b0bfdf5
NN		 320int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
321{
322 int offset = 0, counter = 10;
323 int res;
324
325 if (!s->chr_sync_read) {
326 return 0;
327 }
33577b47
PD		 328
329 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
330 return replay_char_read_all_load(buf);
331 }
7b0bfdf5
NN		 332
333 while (offset < len) {
53628efb
DB		 334 retry:
335 res = s->chr_sync_read(s, buf + offset, len - offset);
336 if (res == -1 && errno == EAGAIN) {
337 g_usleep(100);
338 goto retry;
339 }
7b0bfdf5
NN		 340
341 if (res == 0) {
342 break;
343 }
344
345 if (res < 0) {
33577b47
PD		 346 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
347 replay_char_read_all_save_error(res);
348 }
7b0bfdf5
NN		 349 return res;
350 }
351
352 offset += res;
353
354 if (!counter--) {
355 break;
356 }
357 }
358
33577b47
PD		 359 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
360 replay_char_read_all_save_buf(buf, offset);
361 }
7b0bfdf5
NN		 362 return offset;
363}
364
41084f1b 365int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0 366{
33577b47
PD		 367 int res;
368 if (!s->chr_ioctl || s->replay) {
369 res = -ENOTSUP;
370 } else {
371 res = s->chr_ioctl(s, cmd, arg);
372 }
373
374 return res;
6f97dba0
AL		 375}
376
909cda12 377int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 378{
379 if (!s->chr_can_read)
380 return 0;
381 return s->chr_can_read(s->handler_opaque);
382}
383
33577b47 384void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 385{
ac310734
SW		 386 if (s->chr_read) {
387 s->chr_read(s->handler_opaque, buf, len);
388 }
6f97dba0
AL		 389}
390
33577b47
PD		 391void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
392{
393 if (s->replay) {
394 if (replay_mode == REPLAY_MODE_PLAY) {
395 return;
396 }
397 replay_chr_be_write(s, buf, len);
398 } else {
399 qemu_chr_be_write_impl(s, buf, len);
400 }
401}
402
74c0d6f0 403int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 404{
c76bf6bb 405 int fd;
33577b47
PD		 406 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
407 if (s->replay) {
408 fprintf(stderr,
409 "Replay: get msgfd is not supported for serial devices yet\n");
410 exit(1);
411 }
412 return res;
c76bf6bb
NN		 413}
414
415int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
416{
417 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 418}
419
d39aac7a
NN		 420int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
421{
422 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
423}
424
13661089
DB		 425int qemu_chr_add_client(CharDriverState *s, int fd)
426{
427 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
428}
429
6f97dba0
AL		 430void qemu_chr_accept_input(CharDriverState *s)
431{
432 if (s->chr_accept_input)
433 s->chr_accept_input(s);
98c8ee1d 434 qemu_notify_event();
6f97dba0
AL		 435}
436
e7e71b0e 437void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 438{
9bd7854e 439 char buf[READ_BUF_LEN];
6f97dba0
AL		 440 va_list ap;
441 va_start(ap, fmt);
442 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 443 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 444 va_end(ap);
445}
446
386a5a1e
AS		 447static void remove_fd_in_watch(CharDriverState *chr);
448
6f97dba0 449void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 450 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 451 IOReadHandler *fd_read,
452 IOEventHandler *fd_event,
453 void *opaque)
454{
19083228
HG		 455 int fe_open;
456
da7d998b 457 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 458 fe_open = 0;
386a5a1e 459 remove_fd_in_watch(s);
19083228
HG		 460 } else {
461 fe_open = 1;
2d6c1ef4 462 }
6f97dba0
AL		 463 s->chr_can_read = fd_can_read;
464 s->chr_read = fd_read;
465 s->chr_event = fd_event;
466 s->handler_opaque = opaque;
ac1b84dd 467 if (fe_open && s->chr_update_read_handler)
6f97dba0 468 s->chr_update_read_handler(s);
73cdf3f2 469
19083228 470 if (!s->explicit_fe_open) {
8e25daa8 471 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 472 }
473
73cdf3f2
AG		 474 /* We're connecting to an already opened device, so let's make sure we
475 also get the open event */
a59bcd31 476 if (fe_open && s->be_open) {
fee204fd 477 qemu_chr_be_generic_open(s);
73cdf3f2 478 }
6f97dba0
AL		 479}
480
481static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
482{
483 return len;
484}
485
0d64992b
PB		 486static CharDriverState *qemu_chr_open_null(const char *id,
487 ChardevBackend *backend,
488 ChardevReturn *ret,
489 Error **errp)
6f97dba0
AL		 490{
491 CharDriverState *chr;
32bafa8f 492 ChardevCommon *common = backend->u.null.data;
6f97dba0 493
d0d7708b
DB		 494 chr = qemu_chr_alloc(common, errp);
495 if (!chr) {
496 return NULL;
497 }
6f97dba0 498 chr->chr_write = null_chr_write;
bd5c51ee 499 chr->explicit_be_open = true;
1f51470d 500 return chr;
6f97dba0
AL		 501}
502
503/* MUX driver for serial I/O splitting */
6f97dba0
AL		 504#define MAX_MUX 4
505#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
506#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
507typedef struct {
7b27a769 508 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 509 IOReadHandler *chr_read[MAX_MUX];
510 IOEventHandler *chr_event[MAX_MUX];
511 void *ext_opaque[MAX_MUX];
512 CharDriverState *drv;
799f1f23 513 int focus;
6f97dba0
AL		 514 int mux_cnt;
515 int term_got_escape;
516 int max_size;
a80bf99f
AL		 517 /* Intermediate input buffer allows to catch escape sequences even if the
518 currently active device is not accepting any input - but only until it
519 is full as well. */
520 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
521 int prod[MAX_MUX];
522 int cons[MAX_MUX];
2d22959d 523 int timestamps;
9005b2a7
PB		 524
525 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 526 int linestart;
2d22959d 527 int64_t timestamps_start;
6f97dba0
AL		 528} MuxDriver;
529
530
9005b2a7 531/* Called with chr_write_lock held. */
6f97dba0
AL		 532static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
533{
534 MuxDriver *d = chr->opaque;
535 int ret;
2d22959d 536 if (!d->timestamps) {
6975b713 537 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 538 } else {
539 int i;
540
541 ret = 0;
4ab312f7
JK		 542 for (i = 0; i < len; i++) {
543 if (d->linestart) {
6f97dba0
AL		 544 char buf1[64];
545 int64_t ti;
546 int secs;
547
bc72ad67 548 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 549 if (d->timestamps_start == -1)
550 d->timestamps_start = ti;
551 ti -= d->timestamps_start;
a4bb1db8 552 secs = ti / 1000;
6f97dba0
AL		 553 snprintf(buf1, sizeof(buf1),
554 "[%02d:%02d:%02d.%03d] ",
555 secs / 3600,
556 (secs / 60) % 60,
557 secs % 60,
a4bb1db8 558 (int)(ti % 1000));
6975b713 559 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 560 d->linestart = 0;
561 }
6975b713 562 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 563 if (buf[i] == '\n') {
564 d->linestart = 1;
6f97dba0
AL		 565 }
566 }
567 }
568 return ret;
569}
570
571static const char * const mux_help[] = {
572 "% h print this help\n\r",
573 "% x exit emulator\n\r",
574 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 575 "% t toggle console timestamps\n\r",
6f97dba0
AL		 576 "% b send break (magic sysrq)\n\r",
577 "% c switch between console and monitor\n\r",
578 "% % sends %\n\r",
579 NULL
580};
581
582int term_escape_char = 0x01; /* ctrl-a is used for escape */
583static void mux_print_help(CharDriverState *chr)
584{
585 int i, j;
586 char ebuf[15] = "Escape-Char";
587 char cbuf[50] = "\n\r";
588
589 if (term_escape_char > 0 && term_escape_char < 26) {
590 snprintf(cbuf, sizeof(cbuf), "\n\r");
591 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
592 } else {
593 snprintf(cbuf, sizeof(cbuf),
594 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
595 term_escape_char);
596 }
6975b713 597 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 598 for (i = 0; mux_help[i] != NULL; i++) {
599 for (j=0; mux_help[i][j] != '\0'; j++) {
600 if (mux_help[i][j] == '%')
6975b713 601 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 602 else
6975b713 603 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 604 }
605 }
606}
607
2724b180
AL		 608static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
609{
610 if (d->chr_event[mux_nr])
611 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
612}
613
6f97dba0
AL		 614static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
615{
616 if (d->term_got_escape) {
617 d->term_got_escape = 0;
618 if (ch == term_escape_char)
619 goto send_char;
620 switch(ch) {
621 case '?':
622 case 'h':
623 mux_print_help(chr);
624 break;
625 case 'x':
626 {
627 const char *term = "QEMU: Terminated\n\r";
6975b713 628 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 629 exit(0);
630 break;
631 }
632 case 's':
da31d594 633 blk_commit_all();
6f97dba0
AL		 634 break;
635 case 'b':
a425d23f 636 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 637 break;
638 case 'c':
639 /* Switch to the next registered device */
799f1f23
GH		 640 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
641 d->focus++;
642 if (d->focus >= d->mux_cnt)
643 d->focus = 0;
644 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 645 break;
2d22959d
JK		 646 case 't':
647 d->timestamps = !d->timestamps;
648 d->timestamps_start = -1;
4ab312f7 649 d->linestart = 0;
2d22959d 650 break;
6f97dba0
AL		 651 }
652 } else if (ch == term_escape_char) {
653 d->term_got_escape = 1;
654 } else {
655 send_char:
656 return 1;
657 }
658 return 0;
659}
660
661static void mux_chr_accept_input(CharDriverState *chr)
662{
6f97dba0 663 MuxDriver *d = chr->opaque;
799f1f23 664 int m = d->focus;
6f97dba0 665
a80bf99f 666 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 667 d->chr_can_read[m] &&
668 d->chr_can_read[m](d->ext_opaque[m])) {
669 d->chr_read[m](d->ext_opaque[m],
a80bf99f 670 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 671 }
672}
673
674static int mux_chr_can_read(void *opaque)
675{
676 CharDriverState *chr = opaque;
677 MuxDriver *d = chr->opaque;
799f1f23 678 int m = d->focus;
6f97dba0 679
a80bf99f 680 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 681 return 1;
a80bf99f
AL		 682 if (d->chr_can_read[m])
683 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 684 return 0;
685}
686
687static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
688{
689 CharDriverState *chr = opaque;
690 MuxDriver *d = chr->opaque;
799f1f23 691 int m = d->focus;
6f97dba0
AL		 692 int i;
693
694 mux_chr_accept_input (opaque);
695
696 for(i = 0; i < size; i++)
697 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 698 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 699 d->chr_can_read[m] &&
700 d->chr_can_read[m](d->ext_opaque[m]))
701 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
702 else
a80bf99f 703 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 704 }
705}
706
707static void mux_chr_event(void *opaque, int event)
708{
709 CharDriverState *chr = opaque;
710 MuxDriver *d = chr->opaque;
711 int i;
712
713 /* Send the event to all registered listeners */
714 for (i = 0; i < d->mux_cnt; i++)
2724b180 715 mux_chr_send_event(d, i, event);
6f97dba0
AL		 716}
717
718static void mux_chr_update_read_handler(CharDriverState *chr)
719{
720 MuxDriver *d = chr->opaque;
721
722 if (d->mux_cnt >= MAX_MUX) {
723 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
724 return;
725 }
726 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
727 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
728 d->chr_read[d->mux_cnt] = chr->chr_read;
729 d->chr_event[d->mux_cnt] = chr->chr_event;
730 /* Fix up the real driver with mux routines */
731 if (d->mux_cnt == 0) {
732 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
733 mux_chr_event, chr);
734 }
799f1f23
GH		 735 if (d->focus != -1) {
736 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 737 }
799f1f23 738 d->focus = d->mux_cnt;
6f97dba0 739 d->mux_cnt++;
799f1f23 740 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 741}
742
7b7ab18d
MR		 743static bool muxes_realized;
744
745/**
746 * Called after processing of default and command-line-specified
747 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
748 * to a mux chardev. This is done here to ensure that
749 * output/prompts/banners are only displayed for the FE that has
750 * focus when initial command-line processing/machine init is
751 * completed.
752 *
753 * After this point, any new FE attached to any new or existing
754 * mux will receive CHR_EVENT_OPENED notifications for the BE
755 * immediately.
756 */
757static void muxes_realize_done(Notifier *notifier, void *unused)
758{
759 CharDriverState *chr;
760
761 QTAILQ_FOREACH(chr, &chardevs, next) {
762 if (chr->is_mux) {
763 MuxDriver *d = chr->opaque;
764 int i;
765
766 /* send OPENED to all already-attached FEs */
767 for (i = 0; i < d->mux_cnt; i++) {
768 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
769 }
770 /* mark mux as OPENED so any new FEs will immediately receive
771 * OPENED event
772 */
773 qemu_chr_be_generic_open(chr);
774 }
775 }
776 muxes_realized = true;
777}
778
779static Notifier muxes_realize_notify = {
780 .notify = muxes_realize_done,
781};
782
3f0838ab
KB		 783static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
784{
785 MuxDriver *d = s->opaque;
786 return d->drv->chr_add_watch(d->drv, cond);
787}
788
1371a369
MAL		 789static void mux_chr_close(struct CharDriverState *chr)
790{
791 MuxDriver *d = chr->opaque;
792
793 g_free(d);
794}
795
3c0e5a4a
PB		 796static CharDriverState *qemu_chr_open_mux(const char *id,
797 ChardevBackend *backend,
798 ChardevReturn *ret, Error **errp)
6f97dba0 799{
32bafa8f 800 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 801 CharDriverState *chr, *drv;
6f97dba0 802 MuxDriver *d;
f194a1ae 803 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 804
3c0e5a4a
PB		 805 drv = qemu_chr_find(mux->chardev);
806 if (drv == NULL) {
807 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
808 return NULL;
809 }
810
d0d7708b
DB		 811 chr = qemu_chr_alloc(common, errp);
812 if (!chr) {
813 return NULL;
814 }
2d528d45 815 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 816
817 chr->opaque = d;
818 d->drv = drv;
799f1f23 819 d->focus = -1;
1371a369 820 chr->chr_close = mux_chr_close;
6f97dba0
AL		 821 chr->chr_write = mux_chr_write;
822 chr->chr_update_read_handler = mux_chr_update_read_handler;
823 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 824 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 825 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 826 if (drv->chr_add_watch) {
827 chr->chr_add_watch = mux_chr_add_watch;
828 }
7b7ab18d
MR		 829 /* only default to opened state if we've realized the initial
830 * set of muxes
831 */
832 chr->explicit_be_open = muxes_realized ? 0 : 1;
833 chr->is_mux = 1;
73cdf3f2 834
6f97dba0
AL		 835 return chr;
836}
837
838
96c63847
AL		 839typedef struct IOWatchPoll
840{
d185c094
PB		 841 GSource parent;
842
9894dc0c 843 QIOChannel *ioc;
96c63847 844 GSource *src;
96c63847
AL		 845
846 IOCanReadHandler *fd_can_read;
1e885b25 847 GSourceFunc fd_read;
96c63847 848 void *opaque;
96c63847
AL		 849} IOWatchPoll;
850
96c63847
AL		 851static IOWatchPoll *io_watch_poll_from_source(GSource *source)
852{
d185c094 853 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 854}
855
856static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
857{
858 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 859 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 860 bool was_active = iwp->src != NULL;
d185c094 861 if (was_active == now_active) {
96c63847
AL		 862 return FALSE;
863 }
864
d185c094 865 if (now_active) {
9894dc0c
DB		 866 iwp->src = qio_channel_create_watch(
867 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 868 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 869 g_source_attach(iwp->src, NULL);
870 } else {
1e885b25
PB		 871 g_source_destroy(iwp->src);
872 g_source_unref(iwp->src);
873 iwp->src = NULL;
d185c094
PB		 874 }
875 return FALSE;
96c63847
AL		 876}
877
878static gboolean io_watch_poll_check(GSource *source)
879{
d185c094 880 return FALSE;
96c63847
AL		 881}
882
883static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
884 gpointer user_data)
885{
d185c094 886 abort();
96c63847
AL		 887}
888
889static void io_watch_poll_finalize(GSource *source)
890{
2b316774
PB		 891 /* Due to a glib bug, removing the last reference to a source
892 * inside a finalize callback causes recursive locking (and a
893 * deadlock). This is not a problem inside other callbacks,
894 * including dispatch callbacks, so we call io_remove_watch_poll
895 * to remove this source. At this point, iwp->src must
896 * be NULL, or we would leak it.
897 *
898 * This would be solved much more elegantly by child sources,
899 * but we support older glib versions that do not have them.
900 */
96c63847 901 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 902 assert(iwp->src == NULL);
96c63847
AL		 903}
904
905static GSourceFuncs io_watch_poll_funcs = {
906 .prepare = io_watch_poll_prepare,
907 .check = io_watch_poll_check,
908 .dispatch = io_watch_poll_dispatch,
909 .finalize = io_watch_poll_finalize,
910};
911
912/* Can only be used for read */
9894dc0c 913static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 914 IOCanReadHandler *fd_can_read,
9894dc0c 915 QIOChannelFunc fd_read,
96c63847
AL		 916 gpointer user_data)
917{
918 IOWatchPoll *iwp;
0ca5aa4f 919 int tag;
96c63847 920
d185c094 921 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 922 iwp->fd_can_read = fd_can_read;
923 iwp->opaque = user_data;
9894dc0c 924 iwp->ioc = ioc;
1e885b25
PB		 925 iwp->fd_read = (GSourceFunc) fd_read;
926 iwp->src = NULL;
96c63847 927
0ca5aa4f
PB		 928 tag = g_source_attach(&iwp->parent, NULL);
929 g_source_unref(&iwp->parent);
930 return tag;
96c63847
AL		 931}
932
2b316774
PB		 933static void io_remove_watch_poll(guint tag)
934{
935 GSource *source;
936 IOWatchPoll *iwp;
937
938 g_return_if_fail (tag > 0);
939
940 source = g_main_context_find_source_by_id(NULL, tag);
941 g_return_if_fail (source != NULL);
942
943 iwp = io_watch_poll_from_source(source);
944 if (iwp->src) {
945 g_source_destroy(iwp->src);
946 g_source_unref(iwp->src);
947 iwp->src = NULL;
948 }
949 g_source_destroy(&iwp->parent);
950}
951
26da70c7
AS		 952static void remove_fd_in_watch(CharDriverState *chr)
953{
954 if (chr->fd_in_tag) {
955 io_remove_watch_poll(chr->fd_in_tag);
956 chr->fd_in_tag = 0;
957 }
958}
959
96c63847 960
9894dc0c
DB		 961static int io_channel_send_full(QIOChannel *ioc,
962 const void *buf, size_t len,
963 int *fds, size_t nfds)
76a9644b 964{
9894dc0c 965 size_t offset = 0;
76a9644b 966
9894dc0c
DB		 967 while (offset < len) {
968 ssize_t ret = 0;
969 struct iovec iov = { .iov_base = (char *)buf + offset,
970 .iov_len = len - offset };
971
972 ret = qio_channel_writev_full(
973 ioc, &iov, 1,
974 fds, nfds, NULL);
975 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 976 if (offset) {
977 return offset;
978 }
76a9644b 979
e046fb44
DB		 980 errno = EAGAIN;
981 return -1;
982 } else if (ret < 0) {
9894dc0c
DB		 983 errno = EINVAL;
984 return -1;
985 }
76a9644b 986
9894dc0c
DB		 987 offset += ret;
988 }
76a9644b 989
9894dc0c 990 return offset;
76a9644b
AL		 991}
992
9894dc0c 993
0ff0fad2 994#ifndef _WIN32
9894dc0c 995static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 996{
9894dc0c 997 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 998}
96c63847 999
44ab9ed4 1000
a29753f8
AL		 1001typedef struct FDCharDriver {
1002 CharDriverState *chr;
9894dc0c 1003 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 1004 int max_size;
1005} FDCharDriver;
1006
9005b2a7 1007/* Called with chr_write_lock held. */
6f97dba0
AL		 1008static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1009{
1010 FDCharDriver *s = chr->opaque;
a29753f8 1011
9894dc0c 1012 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1013}
1014
9894dc0c 1015static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1016{
1017 CharDriverState *chr = opaque;
1018 FDCharDriver *s = chr->opaque;
a29753f8 1019 int len;
9bd7854e 1020 uint8_t buf[READ_BUF_LEN];
9894dc0c 1021 ssize_t ret;
6f97dba0
AL		 1022
1023 len = sizeof(buf);
a29753f8 1024 if (len > s->max_size) {
6f97dba0 1025 len = s->max_size;
a29753f8
AL		 1026 }
1027 if (len == 0) {
cdbf6e16 1028 return TRUE;
a29753f8
AL		 1029 }
1030
9894dc0c
DB		 1031 ret = qio_channel_read(
1032 chan, (gchar *)buf, len, NULL);
1033 if (ret == 0) {
26da70c7 1034 remove_fd_in_watch(chr);
a425d23f 1035 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1036 return FALSE;
6f97dba0 1037 }
9894dc0c
DB		 1038 if (ret > 0) {
1039 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1040 }
a29753f8
AL		 1041
1042 return TRUE;
1043}
1044
1045static int fd_chr_read_poll(void *opaque)
1046{
1047 CharDriverState *chr = opaque;
1048 FDCharDriver *s = chr->opaque;
1049
1050 s->max_size = qemu_chr_be_can_write(chr);
1051 return s->max_size;
6f97dba0
AL		 1052}
1053
23673ca7
AL		 1054static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1055{
1056 FDCharDriver *s = chr->opaque;
9894dc0c 1057 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1058}
1059
6f97dba0
AL		 1060static void fd_chr_update_read_handler(CharDriverState *chr)
1061{
1062 FDCharDriver *s = chr->opaque;
1063
26da70c7 1064 remove_fd_in_watch(chr);
9894dc0c
DB		 1065 if (s->ioc_in) {
1066 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1067 fd_chr_read_poll,
7ba9addc 1068 fd_chr_read, chr);
6f97dba0
AL		 1069 }
1070}
1071
1072static void fd_chr_close(struct CharDriverState *chr)
1073{
1074 FDCharDriver *s = chr->opaque;
1075
26da70c7 1076 remove_fd_in_watch(chr);
9894dc0c
DB		 1077 if (s->ioc_in) {
1078 object_unref(OBJECT(s->ioc_in));
a29753f8 1079 }
9894dc0c
DB		 1080 if (s->ioc_out) {
1081 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1082 }
1083
7267c094 1084 g_free(s);
a425d23f 1085 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1086}
1087
1088/* open a character device to a unix fd */
d0d7708b
DB		 1089static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1090 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1091{
1092 CharDriverState *chr;
1093 FDCharDriver *s;
1094
d0d7708b
DB		 1095 chr = qemu_chr_alloc(backend, errp);
1096 if (!chr) {
1097 return NULL;
1098 }
2d528d45 1099 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1100 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1101 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1102 qemu_set_nonblock(fd_out);
a29753f8 1103 s->chr = chr;
6f97dba0 1104 chr->opaque = s;
23673ca7 1105 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1106 chr->chr_write = fd_chr_write;
1107 chr->chr_update_read_handler = fd_chr_update_read_handler;
1108 chr->chr_close = fd_chr_close;
1109
6f97dba0
AL		 1110 return chr;
1111}
1112
20cbe7a2
PB		 1113static CharDriverState *qemu_chr_open_pipe(const char *id,
1114 ChardevBackend *backend,
1115 ChardevReturn *ret,
1116 Error **errp)
6f97dba0 1117{
32bafa8f 1118 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1119 int fd_in, fd_out;
0ff0fad2
DB		 1120 char *filename_in;
1121 char *filename_out;
548cbb36 1122 const char *filename = opts->device;
f194a1ae 1123 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1124
0ff0fad2
DB		 1125
1126 filename_in = g_strdup_printf("%s.in", filename);
1127 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1128 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1129 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1130 g_free(filename_in);
1131 g_free(filename_out);
6f97dba0
AL		 1132 if (fd_in < 0 || fd_out < 0) {
1133 if (fd_in >= 0)
1134 close(fd_in);
1135 if (fd_out >= 0)
1136 close(fd_out);
b181e047 1137 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1138 if (fd_in < 0) {
20cbe7a2 1139 error_setg_file_open(errp, errno, filename);
1f51470d 1140 return NULL;
a89dd6c3 1141 }
6f97dba0 1142 }
d0d7708b 1143 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1144}
1145
6f97dba0
AL		 1146/* init terminal so that we can grab keys */
1147static struct termios oldtty;
1148static int old_fd0_flags;
c88930a6 1149static bool stdio_in_use;
bb002513 1150static bool stdio_allow_signal;
e76d4420
GH		 1151static bool stdio_echo_state;
1152
1153static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1154
1155static void term_exit(void)
1156{
1157 tcsetattr (0, TCSANOW, &oldtty);
1158 fcntl(0, F_SETFL, old_fd0_flags);
1159}
1160
e76d4420
GH		 1161static void term_stdio_handler(int sig)
1162{
1163 /* restore echo after resume from suspend. */
1164 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1165}
1166
bb002513 1167static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1168{
1169 struct termios tty;
1170
e76d4420 1171 stdio_echo_state = echo;
0369364b 1172 tty = oldtty;
bb002513
PB		 1173 if (!echo) {
1174 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1175 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1176 tty.c_oflag |= OPOST;
1177 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1178 tty.c_cflag &= ~(CSIZE|PARENB);
1179 tty.c_cflag |= CS8;
1180 tty.c_cc[VMIN] = 1;
1181 tty.c_cc[VTIME] = 0;
1182 }
bb002513 1183 if (!stdio_allow_signal)
6f97dba0 1184 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1185
1186 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1187}
1188
1189static void qemu_chr_close_stdio(struct CharDriverState *chr)
1190{
1191 term_exit();
6f97dba0
AL		 1192 fd_chr_close(chr);
1193}
1194
8c84b25d
PB		 1195static CharDriverState *qemu_chr_open_stdio(const char *id,
1196 ChardevBackend *backend,
1197 ChardevReturn *ret,
1198 Error **errp)
6f97dba0 1199{
32bafa8f 1200 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1201 CharDriverState *chr;
e76d4420 1202 struct sigaction act;
f194a1ae 1203 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1204
ab51b1d5 1205 if (is_daemonized()) {
8c84b25d 1206 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1207 return NULL;
1208 }
c88930a6
LL		 1209
1210 if (stdio_in_use) {
8c84b25d
PB		 1211 error_setg(errp, "cannot use stdio by multiple character devices");
1212 return NULL;
c88930a6
LL		 1213 }
1214
1215 stdio_in_use = true;
ed7a1540 1216 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1217 tcgetattr(0, &oldtty);
4ff12bdb 1218 qemu_set_nonblock(0);
ed7a1540 1219 atexit(term_exit);
0369364b 1220
e76d4420
GH		 1221 memset(&act, 0, sizeof(act));
1222 act.sa_handler = term_stdio_handler;
1223 sigaction(SIGCONT, &act, NULL);
1224
d0d7708b 1225 chr = qemu_chr_open_fd(0, 1, common, errp);
069e885d
LM		 1226 if (!chr) {
1227 return NULL;
1228 }
6f97dba0 1229 chr->chr_close = qemu_chr_close_stdio;
bb002513 1230 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1231 if (opts->has_signal) {
1232 stdio_allow_signal = opts->signal;
1233 }
15f31519 1234 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1235
1f51470d 1236 return chr;
6f97dba0
AL		 1237}
1238
6f97dba0 1239#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1240 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1241 || defined(__GLIBC__)
6f97dba0 1242
d809ab95
PB		 1243#define HAVE_CHARDEV_SERIAL 1
1244#define HAVE_CHARDEV_PTY 1
e551498e 1245
6f97dba0 1246typedef struct {
9894dc0c 1247 QIOChannel *ioc;
6f97dba0 1248 int read_bytes;
9005b2a7
PB		 1249
1250 /* Protected by the CharDriverState chr_write_lock. */
1251 int connected;
8aa33caf 1252 guint timer_tag;
7b3621f4 1253 guint open_tag;
6f97dba0
AL		 1254} PtyCharDriver;
1255
9005b2a7 1256static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1257static void pty_chr_state(CharDriverState *chr, int connected);
1258
8aa33caf
AL		 1259static gboolean pty_chr_timer(gpointer opaque)
1260{
1261 struct CharDriverState *chr = opaque;
1262 PtyCharDriver *s = chr->opaque;
1263
9005b2a7 1264 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1265 s->timer_tag = 0;
7b3621f4 1266 s->open_tag = 0;
b0d768c3
GH		 1267 if (!s->connected) {
1268 /* Next poll ... */
9005b2a7 1269 pty_chr_update_read_handler_locked(chr);
b0d768c3 1270 }
9005b2a7 1271 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1272 return FALSE;
1273}
1274
9005b2a7 1275/* Called with chr_write_lock held. */
8aa33caf
AL		 1276static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1277{
1278 PtyCharDriver *s = chr->opaque;
1279
1280 if (s->timer_tag) {
1281 g_source_remove(s->timer_tag);
1282 s->timer_tag = 0;
1283 }
1284
1285 if (ms == 1000) {
1286 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1287 } else {
1288 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1289 }
1290}
1291
9005b2a7
PB		 1292/* Called with chr_write_lock held. */
1293static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1294{
1295 PtyCharDriver *s = chr->opaque;
1296 GPollFD pfd;
c1f24489 1297 int rc;
9894dc0c 1298 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1299
9894dc0c 1300 pfd.fd = fioc->fd;
1bb7fe72
PB		 1301 pfd.events = G_IO_OUT;
1302 pfd.revents = 0;
c1f24489
PB		 1303 do {
1304 rc = g_poll(&pfd, 1, 0);
1305 } while (rc == -1 && errno == EINTR);
1306 assert(rc >= 0);
1307
1bb7fe72
PB		 1308 if (pfd.revents & G_IO_HUP) {
1309 pty_chr_state(chr, 0);
1310 } else {
1311 pty_chr_state(chr, 1);
1312 }
1313}
1314
9005b2a7
PB		 1315static void pty_chr_update_read_handler(CharDriverState *chr)
1316{
1317 qemu_mutex_lock(&chr->chr_write_lock);
1318 pty_chr_update_read_handler_locked(chr);
1319 qemu_mutex_unlock(&chr->chr_write_lock);
1320}
1321
1322/* Called with chr_write_lock held. */
6f97dba0
AL		 1323static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1324{
1325 PtyCharDriver *s = chr->opaque;
1326
1327 if (!s->connected) {
1328 /* guest sends data, check for (re-)connect */
9005b2a7 1329 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1330 if (!s->connected) {
1331 return 0;
1332 }
6f97dba0 1333 }
9894dc0c 1334 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1335}
1336
e6a87ed8
AL		 1337static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1338{
1339 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1340 if (!s->connected) {
1341 return NULL;
1342 }
9894dc0c 1343 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1344}
1345
6f97dba0
AL		 1346static int pty_chr_read_poll(void *opaque)
1347{
1348 CharDriverState *chr = opaque;
1349 PtyCharDriver *s = chr->opaque;
1350
909cda12 1351 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1352 return s->read_bytes;
1353}
1354
9894dc0c 1355static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1356{
1357 CharDriverState *chr = opaque;
1358 PtyCharDriver *s = chr->opaque;
9894dc0c 1359 gsize len;
9bd7854e 1360 uint8_t buf[READ_BUF_LEN];
9894dc0c 1361 ssize_t ret;
6f97dba0
AL		 1362
1363 len = sizeof(buf);
1364 if (len > s->read_bytes)
1365 len = s->read_bytes;
cdbf6e16
PB		 1366 if (len == 0) {
1367 return TRUE;
1368 }
9894dc0c
DB		 1369 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1370 if (ret <= 0) {
6f97dba0 1371 pty_chr_state(chr, 0);
093d3a20
AL		 1372 return FALSE;
1373 } else {
6f97dba0 1374 pty_chr_state(chr, 1);
9894dc0c 1375 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1376 }
093d3a20 1377 return TRUE;
6f97dba0
AL		 1378}
1379
7b3621f4
PB		 1380static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1381{
1382 CharDriverState *chr = opaque;
1383 PtyCharDriver *s = chr->opaque;
1384
1385 s->open_tag = 0;
1386 qemu_chr_be_generic_open(chr);
1387 return FALSE;
1388}
1389
9005b2a7 1390/* Called with chr_write_lock held. */
6f97dba0
AL		 1391static void pty_chr_state(CharDriverState *chr, int connected)
1392{
1393 PtyCharDriver *s = chr->opaque;
1394
1395 if (!connected) {
7b3621f4
PB		 1396 if (s->open_tag) {
1397 g_source_remove(s->open_tag);
1398 s->open_tag = 0;
1399 }
26da70c7 1400 remove_fd_in_watch(chr);
6f97dba0 1401 s->connected = 0;
6f97dba0
AL		 1402 /* (re-)connect poll interval for idle guests: once per second.
1403 * We check more frequently in case the guests sends data to
1404 * the virtual device linked to our pty. */
8aa33caf 1405 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1406 } else {
85a67692
PB		 1407 if (s->timer_tag) {
1408 g_source_remove(s->timer_tag);
1409 s->timer_tag = 0;
1410 }
1411 if (!s->connected) {
7b3621f4 1412 g_assert(s->open_tag == 0);
85a67692 1413 s->connected = 1;
7b3621f4 1414 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1415 }
1416 if (!chr->fd_in_tag) {
9894dc0c
DB		 1417 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1418 pty_chr_read_poll,
7ba9addc 1419 pty_chr_read, chr);
85a67692 1420 }
6f97dba0
AL		 1421 }
1422}
1423
6f97dba0
AL		 1424static void pty_chr_close(struct CharDriverState *chr)
1425{
1426 PtyCharDriver *s = chr->opaque;
1427
7b3621f4
PB		 1428 qemu_mutex_lock(&chr->chr_write_lock);
1429 pty_chr_state(chr, 0);
9894dc0c 1430 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1431 if (s->timer_tag) {
1432 g_source_remove(s->timer_tag);
910b6368 1433 s->timer_tag = 0;
8aa33caf 1434 }
7b3621f4 1435 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1436 g_free(s);
a425d23f 1437 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1438}
1439
e68c5958 1440static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1441 ChardevBackend *backend,
1442 ChardevReturn *ret,
1443 Error **errp)
6f97dba0
AL		 1444{
1445 CharDriverState *chr;
1446 PtyCharDriver *s;
e68c5958 1447 int master_fd, slave_fd;
6f97dba0 1448 char pty_name[PATH_MAX];
32bafa8f 1449 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1450
4efeabbb
MT		 1451 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1452 if (master_fd < 0) {
c2e75a43 1453 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1454 return NULL;
6f97dba0
AL		 1455 }
1456
837a183f 1457 close(slave_fd);
fac6688a 1458 qemu_set_nonblock(master_fd);
6f97dba0 1459
d0d7708b
DB		 1460 chr = qemu_chr_alloc(common, errp);
1461 if (!chr) {
1462 close(master_fd);
1463 return NULL;
1464 }
a4e26048 1465
4efeabbb
MT		 1466 chr->filename = g_strdup_printf("pty:%s", pty_name);
1467 ret->pty = g_strdup(pty_name);
e68c5958 1468 ret->has_pty = true;
58650218 1469
e68c5958 1470 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1471 pty_name, id);
6f97dba0 1472
2d528d45 1473 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1474 chr->opaque = s;
1475 chr->chr_write = pty_chr_write;
1476 chr->chr_update_read_handler = pty_chr_update_read_handler;
1477 chr->chr_close = pty_chr_close;
e6a87ed8 1478 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1479 chr->explicit_be_open = true;
6f97dba0 1480
9894dc0c 1481 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1482 s->timer_tag = 0;
6f97dba0 1483
1f51470d 1484 return chr;
6f97dba0
AL		 1485}
1486
1487static void tty_serial_init(int fd, int speed,
1488 int parity, int data_bits, int stop_bits)
1489{
1490 struct termios tty;
1491 speed_t spd;
1492
1493#if 0
1494 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1495 speed, parity, data_bits, stop_bits);
1496#endif
1497 tcgetattr (fd, &tty);
1498
45eea13b
SW		 1499#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1500 speed = speed * 10 / 11;
1501 do {
1502 check_speed(50);
1503 check_speed(75);
1504 check_speed(110);
1505 check_speed(134);
1506 check_speed(150);
1507 check_speed(200);
1508 check_speed(300);
1509 check_speed(600);
1510 check_speed(1200);
1511 check_speed(1800);
1512 check_speed(2400);
1513 check_speed(4800);
1514 check_speed(9600);
1515 check_speed(19200);
1516 check_speed(38400);
1517 /* Non-Posix values follow. They may be unsupported on some systems. */
1518 check_speed(57600);
1519 check_speed(115200);
1520#ifdef B230400
1521 check_speed(230400);
1522#endif
1523#ifdef B460800
1524 check_speed(460800);
1525#endif
1526#ifdef B500000
1527 check_speed(500000);
1528#endif
1529#ifdef B576000
1530 check_speed(576000);
1531#endif
1532#ifdef B921600
1533 check_speed(921600);
1534#endif
1535#ifdef B1000000
1536 check_speed(1000000);
1537#endif
1538#ifdef B1152000
1539 check_speed(1152000);
1540#endif
1541#ifdef B1500000
1542 check_speed(1500000);
1543#endif
1544#ifdef B2000000
1545 check_speed(2000000);
1546#endif
1547#ifdef B2500000
1548 check_speed(2500000);
1549#endif
1550#ifdef B3000000
1551 check_speed(3000000);
1552#endif
1553#ifdef B3500000
1554 check_speed(3500000);
1555#endif
1556#ifdef B4000000
1557 check_speed(4000000);
1558#endif
6f97dba0 1559 spd = B115200;
45eea13b 1560 } while (0);
6f97dba0
AL		 1561
1562 cfsetispeed(&tty, spd);
1563 cfsetospeed(&tty, spd);
1564
1565 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1566 |INLCR|IGNCR|ICRNL|IXON);
1567 tty.c_oflag |= OPOST;
1568 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1569 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1570 switch(data_bits) {
1571 default:
1572 case 8:
1573 tty.c_cflag |= CS8;
1574 break;
1575 case 7:
1576 tty.c_cflag |= CS7;
1577 break;
1578 case 6:
1579 tty.c_cflag |= CS6;
1580 break;
1581 case 5:
1582 tty.c_cflag |= CS5;
1583 break;
1584 }
1585 switch(parity) {
1586 default:
1587 case 'N':
1588 break;
1589 case 'E':
1590 tty.c_cflag |= PARENB;
1591 break;
1592 case 'O':
1593 tty.c_cflag |= PARENB | PARODD;
1594 break;
1595 }
1596 if (stop_bits == 2)
1597 tty.c_cflag |= CSTOPB;
1598
1599 tcsetattr (fd, TCSANOW, &tty);
1600}
1601
1602static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1603{
1604 FDCharDriver *s = chr->opaque;
9894dc0c 1605 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1606
1607 switch(cmd) {
1608 case CHR_IOCTL_SERIAL_SET_PARAMS:
1609 {
1610 QEMUSerialSetParams *ssp = arg;
9894dc0c 1611 tty_serial_init(fioc->fd,
a29753f8 1612 ssp->speed, ssp->parity,
6f97dba0
AL		 1613 ssp->data_bits, ssp->stop_bits);
1614 }
1615 break;
1616 case CHR_IOCTL_SERIAL_SET_BREAK:
1617 {
1618 int enable = *(int *)arg;
a29753f8 1619 if (enable) {
9894dc0c 1620 tcsendbreak(fioc->fd, 1);
a29753f8 1621 }
6f97dba0
AL		 1622 }
1623 break;
1624 case CHR_IOCTL_SERIAL_GET_TIOCM:
1625 {
1626 int sarg = 0;
1627 int *targ = (int *)arg;
9894dc0c 1628 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1629 *targ = 0;
b4abdfa4 1630 if (sarg & TIOCM_CTS)
6f97dba0 1631 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1632 if (sarg & TIOCM_CAR)
6f97dba0 1633 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1634 if (sarg & TIOCM_DSR)
6f97dba0 1635 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1636 if (sarg & TIOCM_RI)
6f97dba0 1637 *targ |= CHR_TIOCM_RI;
b4abdfa4 1638 if (sarg & TIOCM_DTR)
6f97dba0 1639 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1640 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1641 *targ |= CHR_TIOCM_RTS;
1642 }
1643 break;
1644 case CHR_IOCTL_SERIAL_SET_TIOCM:
1645 {
1646 int sarg = *(int *)arg;
1647 int targ = 0;
9894dc0c 1648 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1649 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1650 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1651 if (sarg & CHR_TIOCM_CTS)
1652 targ |= TIOCM_CTS;
1653 if (sarg & CHR_TIOCM_CAR)
1654 targ |= TIOCM_CAR;
1655 if (sarg & CHR_TIOCM_DSR)
1656 targ |= TIOCM_DSR;
1657 if (sarg & CHR_TIOCM_RI)
1658 targ |= TIOCM_RI;
1659 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1660 targ |= TIOCM_DTR;
b4abdfa4 1661 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1662 targ |= TIOCM_RTS;
9894dc0c 1663 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1664 }
1665 break;
1666 default:
1667 return -ENOTSUP;
1668 }
1669 return 0;
1670}
1671
4266a134
DA		 1672static void qemu_chr_close_tty(CharDriverState *chr)
1673{
4266a134 1674 fd_chr_close(chr);
4266a134
DA		 1675}
1676
d0d7708b
DB		 1677static CharDriverState *qemu_chr_open_tty_fd(int fd,
1678 ChardevCommon *backend,
1679 Error **errp)
d59044ef
GH		 1680{
1681 CharDriverState *chr;
1682
1683 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1684 chr = qemu_chr_open_fd(fd, fd, backend, errp);
069e885d
LM		 1685 if (!chr) {
1686 return NULL;
1687 }
d59044ef
GH		 1688 chr->chr_ioctl = tty_serial_ioctl;
1689 chr->chr_close = qemu_chr_close_tty;
1690 return chr;
1691}
6f97dba0
AL		 1692#endif /* __linux__ || __sun__ */
1693
1694#if defined(__linux__)
e551498e
GH		 1695
1696#define HAVE_CHARDEV_PARPORT 1
1697
6f97dba0
AL		 1698typedef struct {
1699 int fd;
1700 int mode;
1701} ParallelCharDriver;
1702
1703static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1704{
1705 if (s->mode != mode) {
1706 int m = mode;
1707 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1708 return 0;
1709 s->mode = mode;
1710 }
1711 return 1;
1712}
1713
1714static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1715{
1716 ParallelCharDriver *drv = chr->opaque;
1717 int fd = drv->fd;
1718 uint8_t b;
1719
1720 switch(cmd) {
1721 case CHR_IOCTL_PP_READ_DATA:
1722 if (ioctl(fd, PPRDATA, &b) < 0)
1723 return -ENOTSUP;
1724 *(uint8_t *)arg = b;
1725 break;
1726 case CHR_IOCTL_PP_WRITE_DATA:
1727 b = *(uint8_t *)arg;
1728 if (ioctl(fd, PPWDATA, &b) < 0)
1729 return -ENOTSUP;
1730 break;
1731 case CHR_IOCTL_PP_READ_CONTROL:
1732 if (ioctl(fd, PPRCONTROL, &b) < 0)
1733 return -ENOTSUP;
1734 /* Linux gives only the lowest bits, and no way to know data
1735 direction! For better compatibility set the fixed upper
1736 bits. */
1737 *(uint8_t *)arg = b | 0xc0;
1738 break;
1739 case CHR_IOCTL_PP_WRITE_CONTROL:
1740 b = *(uint8_t *)arg;
1741 if (ioctl(fd, PPWCONTROL, &b) < 0)
1742 return -ENOTSUP;
1743 break;
1744 case CHR_IOCTL_PP_READ_STATUS:
1745 if (ioctl(fd, PPRSTATUS, &b) < 0)
1746 return -ENOTSUP;
1747 *(uint8_t *)arg = b;
1748 break;
1749 case CHR_IOCTL_PP_DATA_DIR:
1750 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1751 return -ENOTSUP;
1752 break;
1753 case CHR_IOCTL_PP_EPP_READ_ADDR:
1754 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1755 struct ParallelIOArg *parg = arg;
1756 int n = read(fd, parg->buffer, parg->count);
1757 if (n != parg->count) {
1758 return -EIO;
1759 }
1760 }
1761 break;
1762 case CHR_IOCTL_PP_EPP_READ:
1763 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1764 struct ParallelIOArg *parg = arg;
1765 int n = read(fd, parg->buffer, parg->count);
1766 if (n != parg->count) {
1767 return -EIO;
1768 }
1769 }
1770 break;
1771 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1772 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1773 struct ParallelIOArg *parg = arg;
1774 int n = write(fd, parg->buffer, parg->count);
1775 if (n != parg->count) {
1776 return -EIO;
1777 }
1778 }
1779 break;
1780 case CHR_IOCTL_PP_EPP_WRITE:
1781 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1782 struct ParallelIOArg *parg = arg;
1783 int n = write(fd, parg->buffer, parg->count);
1784 if (n != parg->count) {
1785 return -EIO;
1786 }
1787 }
1788 break;
1789 default:
1790 return -ENOTSUP;
1791 }
1792 return 0;
1793}
1794
1795static void pp_close(CharDriverState *chr)
1796{
1797 ParallelCharDriver *drv = chr->opaque;
1798 int fd = drv->fd;
1799
1800 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1801 ioctl(fd, PPRELEASE);
1802 close(fd);
7267c094 1803 g_free(drv);
a425d23f 1804 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1805}
1806
d0d7708b
DB		 1807static CharDriverState *qemu_chr_open_pp_fd(int fd,
1808 ChardevCommon *backend,
1809 Error **errp)
6f97dba0
AL		 1810{
1811 CharDriverState *chr;
1812 ParallelCharDriver *drv;
6f97dba0
AL		 1813
1814 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1815 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1816 close(fd);
1f51470d 1817 return NULL;
6f97dba0
AL		 1818 }
1819
d0d7708b
DB		 1820 chr = qemu_chr_alloc(backend, errp);
1821 if (!chr) {
1822 return NULL;
1823 }
27ef9cb0
PB		 1824
1825 drv = g_new0(ParallelCharDriver, 1);
1826 chr->opaque = drv;
6f97dba0
AL		 1827 chr->chr_write = null_chr_write;
1828 chr->chr_ioctl = pp_ioctl;
1829 chr->chr_close = pp_close;
27ef9cb0
PB		 1830
1831 drv->fd = fd;
1832 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1833
1f51470d 1834 return chr;
6f97dba0
AL		 1835}
1836#endif /* __linux__ */
1837
a167ba50 1838#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1839
1840#define HAVE_CHARDEV_PARPORT 1
1841
6972f935
BS		 1842static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1843{
e0efb993 1844 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1845 uint8_t b;
1846
1847 switch(cmd) {
1848 case CHR_IOCTL_PP_READ_DATA:
1849 if (ioctl(fd, PPIGDATA, &b) < 0)
1850 return -ENOTSUP;
1851 *(uint8_t *)arg = b;
1852 break;
1853 case CHR_IOCTL_PP_WRITE_DATA:
1854 b = *(uint8_t *)arg;
1855 if (ioctl(fd, PPISDATA, &b) < 0)
1856 return -ENOTSUP;
1857 break;
1858 case CHR_IOCTL_PP_READ_CONTROL:
1859 if (ioctl(fd, PPIGCTRL, &b) < 0)
1860 return -ENOTSUP;
1861 *(uint8_t *)arg = b;
1862 break;
1863 case CHR_IOCTL_PP_WRITE_CONTROL:
1864 b = *(uint8_t *)arg;
1865 if (ioctl(fd, PPISCTRL, &b) < 0)
1866 return -ENOTSUP;
1867 break;
1868 case CHR_IOCTL_PP_READ_STATUS:
1869 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1870 return -ENOTSUP;
1871 *(uint8_t *)arg = b;
1872 break;
1873 default:
1874 return -ENOTSUP;
1875 }
1876 return 0;
1877}
1878
d0d7708b 1879static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1880 ChardevCommon *backend,
d0d7708b 1881 Error **errp)
6972f935
BS		 1882{
1883 CharDriverState *chr;
6972f935 1884
0850d49c 1885 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1886 if (!chr) {
1887 return NULL;
1888 }
e0efb993 1889 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1890 chr->chr_write = null_chr_write;
1891 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1892 chr->explicit_be_open = true;
1f51470d 1893 return chr;
6972f935
BS		 1894}
1895#endif
1896
6f97dba0
AL		 1897#else /* _WIN32 */
1898
d809ab95
PB		 1899#define HAVE_CHARDEV_SERIAL 1
1900
6f97dba0
AL		 1901typedef struct {
1902 int max_size;
1903 HANDLE hcom, hrecv, hsend;
9005b2a7 1904 OVERLAPPED orecv;
6f97dba0
AL		 1905 BOOL fpipe;
1906 DWORD len;
9005b2a7
PB		 1907
1908 /* Protected by the CharDriverState chr_write_lock. */
1909 OVERLAPPED osend;
6f97dba0
AL		 1910} WinCharState;
1911
db418a0a
FC		 1912typedef struct {
1913 HANDLE hStdIn;
1914 HANDLE hInputReadyEvent;
1915 HANDLE hInputDoneEvent;
1916 HANDLE hInputThread;
1917 uint8_t win_stdio_buf;
1918} WinStdioCharState;
1919
6f97dba0
AL		 1920#define NSENDBUF 2048
1921#define NRECVBUF 2048
1922#define MAXCONNECT 1
1923#define NTIMEOUT 5000
1924
1925static int win_chr_poll(void *opaque);
1926static int win_chr_pipe_poll(void *opaque);
1927
1928static void win_chr_close(CharDriverState *chr)
1929{
1930 WinCharState *s = chr->opaque;
1931
1932 if (s->hsend) {
1933 CloseHandle(s->hsend);
1934 s->hsend = NULL;
1935 }
1936 if (s->hrecv) {
1937 CloseHandle(s->hrecv);
1938 s->hrecv = NULL;
1939 }
1940 if (s->hcom) {
1941 CloseHandle(s->hcom);
1942 s->hcom = NULL;
1943 }
1944 if (s->fpipe)
1945 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1946 else
1947 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1948
a425d23f 1949 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1950}
1951
6511d396 1952static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1953{
1954 WinCharState *s = chr->opaque;
1955 COMMCONFIG comcfg;
1956 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1957 COMSTAT comstat;
1958 DWORD size;
1959 DWORD err;
1960
1961 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1962 if (!s->hsend) {
6511d396 1963 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1964 goto fail;
1965 }
1966 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1967 if (!s->hrecv) {
6511d396 1968 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1969 goto fail;
1970 }
1971
1972 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1973 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1974 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1975 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1976 s->hcom = NULL;
1977 goto fail;
1978 }
1979
1980 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1981 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1982 goto fail;
1983 }
1984
1985 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1986 size = sizeof(COMMCONFIG);
1987 GetDefaultCommConfig(filename, &comcfg, &size);
1988 comcfg.dcb.DCBlength = sizeof(DCB);
1989 CommConfigDialog(filename, NULL, &comcfg);
1990
1991 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1992 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1993 goto fail;
1994 }
1995
1996 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1997 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1998 goto fail;
1999 }
2000
2001 cto.ReadIntervalTimeout = MAXDWORD;
2002 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 2003 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 2004 goto fail;
2005 }
2006
2007 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2008 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2009 goto fail;
2010 }
2011 qemu_add_polling_cb(win_chr_poll, chr);
2012 return 0;
2013
2014 fail:
2015 win_chr_close(chr);
2016 return -1;
2017}
2018
9005b2a7 2019/* Called with chr_write_lock held. */
6f97dba0
AL		 2020static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2021{
2022 WinCharState *s = chr->opaque;
2023 DWORD len, ret, size, err;
2024
2025 len = len1;
2026 ZeroMemory(&s->osend, sizeof(s->osend));
2027 s->osend.hEvent = s->hsend;
2028 while (len > 0) {
2029 if (s->hsend)
2030 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2031 else
2032 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2033 if (!ret) {
2034 err = GetLastError();
2035 if (err == ERROR_IO_PENDING) {
2036 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2037 if (ret) {
2038 buf += size;
2039 len -= size;
2040 } else {
2041 break;
2042 }
2043 } else {
2044 break;
2045 }
2046 } else {
2047 buf += size;
2048 len -= size;
2049 }
2050 }
2051 return len1 - len;
2052}
2053
2054static int win_chr_read_poll(CharDriverState *chr)
2055{
2056 WinCharState *s = chr->opaque;
2057
909cda12 2058 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2059 return s->max_size;
2060}
2061
2062static void win_chr_readfile(CharDriverState *chr)
2063{
2064 WinCharState *s = chr->opaque;
2065 int ret, err;
9bd7854e 2066 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2067 DWORD size;
2068
2069 ZeroMemory(&s->orecv, sizeof(s->orecv));
2070 s->orecv.hEvent = s->hrecv;
2071 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2072 if (!ret) {
2073 err = GetLastError();
2074 if (err == ERROR_IO_PENDING) {
2075 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2076 }
2077 }
2078
2079 if (size > 0) {
fa5efccb 2080 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2081 }
2082}
2083
2084static void win_chr_read(CharDriverState *chr)
2085{
2086 WinCharState *s = chr->opaque;
2087
2088 if (s->len > s->max_size)
2089 s->len = s->max_size;
2090 if (s->len == 0)
2091 return;
2092
2093 win_chr_readfile(chr);
2094}
2095
2096static int win_chr_poll(void *opaque)
2097{
2098 CharDriverState *chr = opaque;
2099 WinCharState *s = chr->opaque;
2100 COMSTAT status;
2101 DWORD comerr;
2102
2103 ClearCommError(s->hcom, &comerr, &status);
2104 if (status.cbInQue > 0) {
2105 s->len = status.cbInQue;
2106 win_chr_read_poll(chr);
2107 win_chr_read(chr);
2108 return 1;
2109 }
2110 return 0;
2111}
2112
6511d396 2113static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2114 ChardevCommon *backend,
6511d396 2115 Error **errp)
6f97dba0
AL		 2116{
2117 CharDriverState *chr;
2118 WinCharState *s;
2119
d0d7708b
DB		 2120 chr = qemu_chr_alloc(backend, errp);
2121 if (!chr) {
2122 return NULL;
2123 }
2d528d45 2124 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2125 chr->opaque = s;
2126 chr->chr_write = win_chr_write;
2127 chr->chr_close = win_chr_close;
2128
6511d396 2129 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2130 g_free(s);
d0d7708b 2131 qemu_chr_free_common(chr);
1f51470d 2132 return NULL;
6f97dba0 2133 }
1f51470d 2134 return chr;
6f97dba0
AL		 2135}
2136
2137static int win_chr_pipe_poll(void *opaque)
2138{
2139 CharDriverState *chr = opaque;
2140 WinCharState *s = chr->opaque;
2141 DWORD size;
2142
2143 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2144 if (size > 0) {
2145 s->len = size;
2146 win_chr_read_poll(chr);
2147 win_chr_read(chr);
2148 return 1;
2149 }
2150 return 0;
2151}
2152
20cbe7a2
PB		 2153static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2154 Error **errp)
6f97dba0
AL		 2155{
2156 WinCharState *s = chr->opaque;
2157 OVERLAPPED ov;
2158 int ret;
2159 DWORD size;
0ff0fad2 2160 char *openname;
6f97dba0
AL		 2161
2162 s->fpipe = TRUE;
2163
2164 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2165 if (!s->hsend) {
20cbe7a2 2166 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2167 goto fail;
2168 }
2169 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2170 if (!s->hrecv) {
20cbe7a2 2171 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2172 goto fail;
2173 }
2174
0ff0fad2 2175 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2176 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2177 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2178 PIPE_WAIT,
2179 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2180 g_free(openname);
6f97dba0 2181 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2182 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2183 s->hcom = NULL;
2184 goto fail;
2185 }
2186
2187 ZeroMemory(&ov, sizeof(ov));
2188 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2189 ret = ConnectNamedPipe(s->hcom, &ov);
2190 if (ret) {
20cbe7a2 2191 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2192 goto fail;
2193 }
2194
2195 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2196 if (!ret) {
20cbe7a2 2197 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2198 if (ov.hEvent) {
2199 CloseHandle(ov.hEvent);
2200 ov.hEvent = NULL;
2201 }
2202 goto fail;
2203 }
2204
2205 if (ov.hEvent) {
2206 CloseHandle(ov.hEvent);
2207 ov.hEvent = NULL;
2208 }
2209 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2210 return 0;
2211
2212 fail:
2213 win_chr_close(chr);
2214 return -1;
2215}
2216
2217
20cbe7a2
PB		 2218static CharDriverState *qemu_chr_open_pipe(const char *id,
2219 ChardevBackend *backend,
2220 ChardevReturn *ret,
2221 Error **errp)
6f97dba0 2222{
32bafa8f 2223 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2224 const char *filename = opts->device;
6f97dba0
AL		 2225 CharDriverState *chr;
2226 WinCharState *s;
f194a1ae 2227 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2228
d0d7708b
DB		 2229 chr = qemu_chr_alloc(common, errp);
2230 if (!chr) {
2231 return NULL;
2232 }
2d528d45 2233 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2234 chr->opaque = s;
2235 chr->chr_write = win_chr_write;
2236 chr->chr_close = win_chr_close;
2237
20cbe7a2 2238 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2239 g_free(s);
d0d7708b 2240 qemu_chr_free_common(chr);
1f51470d 2241 return NULL;
6f97dba0 2242 }
1f51470d 2243 return chr;
6f97dba0
AL		 2244}
2245
d0d7708b
DB		 2246static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2247 ChardevCommon *backend,
2248 Error **errp)
6f97dba0
AL		 2249{
2250 CharDriverState *chr;
2251 WinCharState *s;
2252
d0d7708b
DB		 2253 chr = qemu_chr_alloc(backend, errp);
2254 if (!chr) {
2255 return NULL;
2256 }
2d528d45 2257 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2258 s->hcom = fd_out;
2259 chr->opaque = s;
2260 chr->chr_write = win_chr_write;
1f51470d 2261 return chr;
6f97dba0
AL		 2262}
2263
122e5ed4
PB		 2264static CharDriverState *qemu_chr_open_win_con(const char *id,
2265 ChardevBackend *backend,
2266 ChardevReturn *ret,
2267 Error **errp)
6f97dba0 2268{
32bafa8f 2269 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2270 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2271 common, errp);
6f97dba0
AL		 2272}
2273
db418a0a
FC		 2274static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2275{
2276 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2277 DWORD dwSize;
2278 int len1;
2279
2280 len1 = len;
2281
2282 while (len1 > 0) {
2283 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2284 break;
2285 }
2286 buf += dwSize;
2287 len1 -= dwSize;
2288 }
2289
2290 return len - len1;
2291}
2292
2293static void win_stdio_wait_func(void *opaque)
2294{
2295 CharDriverState *chr = opaque;
2296 WinStdioCharState *stdio = chr->opaque;
2297 INPUT_RECORD buf[4];
2298 int ret;
2299 DWORD dwSize;
2300 int i;
2301
dff7424d 2302 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2303
2304 if (!ret) {
2305 /* Avoid error storm */
2306 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2307 return;
2308 }
2309
2310 for (i = 0; i < dwSize; i++) {
2311 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2312
2313 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2314 int j;
2315 if (kev->uChar.AsciiChar != 0) {
2316 for (j = 0; j < kev->wRepeatCount; j++) {
2317 if (qemu_chr_be_can_write(chr)) {
2318 uint8_t c = kev->uChar.AsciiChar;
2319 qemu_chr_be_write(chr, &c, 1);
2320 }
2321 }
2322 }
2323 }
2324 }
2325}
2326
2327static DWORD WINAPI win_stdio_thread(LPVOID param)
2328{
2329 CharDriverState *chr = param;
2330 WinStdioCharState *stdio = chr->opaque;
2331 int ret;
2332 DWORD dwSize;
2333
2334 while (1) {
2335
2336 /* Wait for one byte */
2337 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2338
2339 /* Exit in case of error, continue if nothing read */
2340 if (!ret) {
2341 break;
2342 }
2343 if (!dwSize) {
2344 continue;
2345 }
2346
2347 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2348 if (stdio->win_stdio_buf == '\r') {
2349 continue;
2350 }
2351
2352 /* Signal the main thread and wait until the byte was eaten */
2353 if (!SetEvent(stdio->hInputReadyEvent)) {
2354 break;
2355 }
2356 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2357 != WAIT_OBJECT_0) {
2358 break;
2359 }
2360 }
2361
2362 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2363 return 0;
2364}
2365
2366static void win_stdio_thread_wait_func(void *opaque)
2367{
2368 CharDriverState *chr = opaque;
2369 WinStdioCharState *stdio = chr->opaque;
2370
2371 if (qemu_chr_be_can_write(chr)) {
2372 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2373 }
2374
2375 SetEvent(stdio->hInputDoneEvent);
2376}
2377
2378static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2379{
2380 WinStdioCharState *stdio = chr->opaque;
2381 DWORD dwMode = 0;
2382
2383 GetConsoleMode(stdio->hStdIn, &dwMode);
2384
2385 if (echo) {
2386 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2387 } else {
2388 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2389 }
2390}
2391
2392static void win_stdio_close(CharDriverState *chr)
2393{
2394 WinStdioCharState *stdio = chr->opaque;
2395
2396 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2397 CloseHandle(stdio->hInputReadyEvent);
2398 }
2399 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2400 CloseHandle(stdio->hInputDoneEvent);
2401 }
2402 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2403 TerminateThread(stdio->hInputThread, 0);
2404 }
2405
2406 g_free(chr->opaque);
2407 g_free(chr);
db418a0a
FC		 2408}
2409
8c84b25d
PB		 2410static CharDriverState *qemu_chr_open_stdio(const char *id,
2411 ChardevBackend *backend,
2412 ChardevReturn *ret,
2413 Error **errp)
db418a0a
FC		 2414{
2415 CharDriverState *chr;
2416 WinStdioCharState *stdio;
2417 DWORD dwMode;
2418 int is_console = 0;
32bafa8f 2419 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2420
d0d7708b
DB		 2421 chr = qemu_chr_alloc(common, errp);
2422 if (!chr) {
2423 return NULL;
2424 }
2d528d45 2425 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2426
2427 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2428 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2429 error_setg(errp, "cannot open stdio: invalid handle");
2430 return NULL;
db418a0a
FC		 2431 }
2432
2433 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2434
2435 chr->opaque = stdio;
2436 chr->chr_write = win_stdio_write;
2437 chr->chr_close = win_stdio_close;
2438
ed7a1540
AL		 2439 if (is_console) {
2440 if (qemu_add_wait_object(stdio->hStdIn,
2441 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2442 error_setg(errp, "qemu_add_wait_object: failed");
2443 goto err1;
ed7a1540
AL		 2444 }
2445 } else {
2446 DWORD dwId;
2447
2448 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2449 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2450 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2451 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2452 error_setg(errp, "cannot create event");
2453 goto err2;
ed7a1540
AL		 2454 }
2455 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2456 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2457 error_setg(errp, "qemu_add_wait_object: failed");
2458 goto err2;
2459 }
2460 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2461 chr, 0, &dwId);
2462
2463 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2464 error_setg(errp, "cannot create stdio thread");
2465 goto err3;
db418a0a
FC		 2466 }
2467 }
2468
2469 dwMode |= ENABLE_LINE_INPUT;
2470
ed7a1540 2471 if (is_console) {
db418a0a
FC		 2472 /* set the terminal in raw mode */
2473 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2474 dwMode |= ENABLE_PROCESSED_INPUT;
2475 }
2476
2477 SetConsoleMode(stdio->hStdIn, dwMode);
2478
2479 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2480 qemu_chr_fe_set_echo(chr, false);
2481
1f51470d 2482 return chr;
8c84b25d
PB		 2483
2484err3:
2485 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2486err2:
2487 CloseHandle(stdio->hInputReadyEvent);
2488 CloseHandle(stdio->hInputDoneEvent);
2489err1:
2490 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2491 return NULL;
db418a0a 2492}
6f97dba0
AL		 2493#endif /* !_WIN32 */
2494
5ab8211b 2495
6f97dba0
AL		 2496/***********************************************************/
2497/* UDP Net console */
2498
2499typedef struct {
9894dc0c 2500 QIOChannel *ioc;
9bd7854e 2501 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2502 int bufcnt;
2503 int bufptr;
2504 int max_size;
2505} NetCharDriver;
2506
9005b2a7 2507/* Called with chr_write_lock held. */
6f97dba0
AL		 2508static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2509{
2510 NetCharDriver *s = chr->opaque;
76a9644b 2511
9894dc0c
DB		 2512 return qio_channel_write(
2513 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2514}
2515
2516static int udp_chr_read_poll(void *opaque)
2517{
2518 CharDriverState *chr = opaque;
2519 NetCharDriver *s = chr->opaque;
2520
909cda12 2521 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2522
2523 /* If there were any stray characters in the queue process them
2524 * first
2525 */
2526 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2527 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2528 s->bufptr++;
909cda12 2529 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2530 }
2531 return s->max_size;
2532}
2533
9894dc0c 2534static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2535{
2536 CharDriverState *chr = opaque;
2537 NetCharDriver *s = chr->opaque;
9894dc0c 2538 ssize_t ret;
6f97dba0 2539
cdbf6e16
PB		 2540 if (s->max_size == 0) {
2541 return TRUE;
2542 }
9894dc0c
DB		 2543 ret = qio_channel_read(
2544 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2545 if (ret <= 0) {
26da70c7 2546 remove_fd_in_watch(chr);
76a9644b
AL		 2547 return FALSE;
2548 }
9894dc0c 2549 s->bufcnt = ret;
6f97dba0
AL		 2550
2551 s->bufptr = 0;
2552 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2553 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2554 s->bufptr++;
909cda12 2555 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2556 }
76a9644b
AL		 2557
2558 return TRUE;
6f97dba0
AL		 2559}
2560
2561static void udp_chr_update_read_handler(CharDriverState *chr)
2562{
2563 NetCharDriver *s = chr->opaque;
2564
26da70c7 2565 remove_fd_in_watch(chr);
9894dc0c
DB		 2566 if (s->ioc) {
2567 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2568 udp_chr_read_poll,
7ba9addc 2569 udp_chr_read, chr);
6f97dba0
AL		 2570 }
2571}
2572
819f56b7
AL		 2573static void udp_chr_close(CharDriverState *chr)
2574{
2575 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2576
2577 remove_fd_in_watch(chr);
9894dc0c
DB		 2578 if (s->ioc) {
2579 object_unref(OBJECT(s->ioc));
819f56b7 2580 }
7267c094 2581 g_free(s);
a425d23f 2582 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2583}
2584
9894dc0c
DB		 2585static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2586 ChardevCommon *backend,
2587 Error **errp)
6f97dba0
AL		 2588{
2589 CharDriverState *chr = NULL;
2590 NetCharDriver *s = NULL;
6f97dba0 2591
d0d7708b
DB		 2592 chr = qemu_chr_alloc(backend, errp);
2593 if (!chr) {
2594 return NULL;
2595 }
2d528d45 2596 s = g_new0(NetCharDriver, 1);
6f97dba0 2597
9894dc0c 2598 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2599 s->bufcnt = 0;
2600 s->bufptr = 0;
2601 chr->opaque = s;
2602 chr->chr_write = udp_chr_write;
2603 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2604 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2605 /* be isn't opened until we get a connection */
2606 chr->explicit_be_open = true;
1f51470d 2607 return chr;
3ecc059d 2608}
6f97dba0 2609
6f97dba0
AL		 2610/***********************************************************/
2611/* TCP Net console */
2612
2613typedef struct {
a8fb5427
DB		 2614 QIOChannel *ioc; /* Client I/O channel */
2615 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2616 QIOChannelSocket *listen_ioc;
7ba9addc 2617 guint listen_tag;
a8fb5427 2618 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2619 int connected;
2620 int max_size;
2621 int do_telnetopt;
2622 int do_nodelay;
2623 int is_unix;
c76bf6bb 2624 int *read_msgfds;
9894dc0c 2625 size_t read_msgfds_num;
d39aac7a 2626 int *write_msgfds;
9894dc0c 2627 size_t write_msgfds_num;
cfb429cb
CM		 2628
2629 SocketAddress *addr;
2630 bool is_listen;
2631 bool is_telnet;
5dd1f02b
CM		 2632
2633 guint reconnect_timer;
2634 int64_t reconnect_time;
5008e5b7 2635 bool connect_err_reported;
6f97dba0
AL		 2636} TCPCharDriver;
2637
5dd1f02b
CM		 2638static gboolean socket_reconnect_timeout(gpointer opaque);
2639
2640static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2641{
2642 TCPCharDriver *s = chr->opaque;
2643 assert(s->connected == 0);
2644 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2645 socket_reconnect_timeout, chr);
2646}
2647
5008e5b7
CM		 2648static void check_report_connect_error(CharDriverState *chr,
2649 Error *err)
2650{
2651 TCPCharDriver *s = chr->opaque;
2652
2653 if (!s->connect_err_reported) {
2654 error_report("Unable to connect character device %s: %s",
2655 chr->label, error_get_pretty(err));
2656 s->connect_err_reported = true;
2657 }
2658 qemu_chr_socket_restart_timer(chr);
2659}
2660
9894dc0c
DB		 2661static gboolean tcp_chr_accept(QIOChannel *chan,
2662 GIOCondition cond,
2663 void *opaque);
d39aac7a 2664
9005b2a7 2665/* Called with chr_write_lock held. */
6f97dba0
AL		 2666static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2667{
2668 TCPCharDriver *s = chr->opaque;
2669 if (s->connected) {
9894dc0c
DB		 2670 int ret = io_channel_send_full(s->ioc, buf, len,
2671 s->write_msgfds,
2672 s->write_msgfds_num);
2673
2674 /* free the written msgfds, no matter what */
2675 if (s->write_msgfds_num) {
2676 g_free(s->write_msgfds);
2677 s->write_msgfds = 0;
2678 s->write_msgfds_num = 0;
d39aac7a 2679 }
9894dc0c
DB		 2680
2681 return ret;
455aa1e0 2682 } else {
6db0fdce 2683 /* XXX: indicate an error ? */
455aa1e0 2684 return len;
6f97dba0
AL		 2685 }
2686}
2687
2688static int tcp_chr_read_poll(void *opaque)
2689{
2690 CharDriverState *chr = opaque;
2691 TCPCharDriver *s = chr->opaque;
2692 if (!s->connected)
2693 return 0;
909cda12 2694 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2695 return s->max_size;
2696}
2697
2698#define IAC 255
2699#define IAC_BREAK 243
2700static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2701 TCPCharDriver *s,
2702 uint8_t *buf, int *size)
2703{
2704 /* Handle any telnet client's basic IAC options to satisfy char by
2705 * char mode with no echo. All IAC options will be removed from
2706 * the buf and the do_telnetopt variable will be used to track the
2707 * state of the width of the IAC information.
2708 *
2709 * IAC commands come in sets of 3 bytes with the exception of the
2710 * "IAC BREAK" command and the double IAC.
2711 */
2712
2713 int i;
2714 int j = 0;
2715
2716 for (i = 0; i < *size; i++) {
2717 if (s->do_telnetopt > 1) {
2718 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2719 /* Double IAC means send an IAC */
2720 if (j != i)
2721 buf[j] = buf[i];
2722 j++;
2723 s->do_telnetopt = 1;
2724 } else {
2725 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2726 /* Handle IAC break commands by sending a serial break */
a425d23f 2727 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2728 s->do_telnetopt++;
2729 }
2730 s->do_telnetopt++;
2731 }
2732 if (s->do_telnetopt >= 4) {
2733 s->do_telnetopt = 1;
2734 }
2735 } else {
2736 if ((unsigned char)buf[i] == IAC) {
2737 s->do_telnetopt = 2;
2738 } else {
2739 if (j != i)
2740 buf[j] = buf[i];
2741 j++;
2742 }
2743 }
2744 }
2745 *size = j;
2746}
2747
c76bf6bb 2748static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2749{
2750 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2751 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2752
c4095726
MT		 2753 assert(num <= TCP_MAX_FDS);
2754
c76bf6bb 2755 if (to_copy) {
d2fc39b4
SH		 2756 int i;
2757
c76bf6bb
NN		 2758 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2759
d2fc39b4
SH		 2760 /* Close unused fds */
2761 for (i = to_copy; i < s->read_msgfds_num; i++) {
2762 close(s->read_msgfds[i]);
2763 }
2764
c76bf6bb
NN		 2765 g_free(s->read_msgfds);
2766 s->read_msgfds = 0;
2767 s->read_msgfds_num = 0;
2768 }
2769
2770 return to_copy;
7d174059
MM		 2771}
2772
d39aac7a
NN		 2773static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2774{
2775 TCPCharDriver *s = chr->opaque;
2776
2777 /* clear old pending fd array */
ef1e1e07 2778 g_free(s->write_msgfds);
869a58af 2779 s->write_msgfds = NULL;
5b498459 2780 s->write_msgfds_num = 0;
d39aac7a 2781
5c7eaabf
MAL		 2782 if (!s->connected ||
2783 !qio_channel_has_feature(s->ioc,
2784 QIO_CHANNEL_FEATURE_FD_PASS)) {
2785 return -1;
2786 }
2787
d39aac7a 2788 if (num) {
2d528d45 2789 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2790 memcpy(s->write_msgfds, fds, num * sizeof(int));
2791 }
2792
2793 s->write_msgfds_num = num;
2794
2795 return 0;
2796}
2797
9894dc0c 2798static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2799{
2800 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2801 struct iovec iov = { .iov_base = buf, .iov_len = len };
2802 int ret;
2803 size_t i;
2804 int *msgfds = NULL;
2805 size_t msgfds_num = 0;
2806
2807 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2808 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2809 &msgfds, &msgfds_num,
2810 NULL);
2811 } else {
2812 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2813 NULL, NULL,
2814 NULL);
2815 }
7d174059 2816
b6572b4f
MAL		 2817 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2818 errno = EAGAIN;
2819 ret = -1;
2820 } else if (ret == -1) {
2821 errno = EIO;
2822 }
2823
9894dc0c 2824 if (msgfds_num) {
c76bf6bb
NN		 2825 /* close and clean read_msgfds */
2826 for (i = 0; i < s->read_msgfds_num; i++) {
2827 close(s->read_msgfds[i]);
2828 }
9b938c72 2829
c76bf6bb
NN		 2830 if (s->read_msgfds_num) {
2831 g_free(s->read_msgfds);
2832 }
2833
9894dc0c
DB		 2834 s->read_msgfds = msgfds;
2835 s->read_msgfds_num = msgfds_num;
7d174059 2836 }
7d174059 2837
9894dc0c
DB		 2838 for (i = 0; i < s->read_msgfds_num; i++) {
2839 int fd = s->read_msgfds[i];
2840 if (fd < 0) {
2841 continue;
2842 }
9977c894 2843
9894dc0c
DB		 2844 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2845 qemu_set_block(fd);
7d174059 2846
9894dc0c
DB		 2847#ifndef MSG_CMSG_CLOEXEC
2848 qemu_set_cloexec(fd);
06138651 2849#endif
06138651 2850 }
9977c894 2851
7d174059 2852 return ret;
9977c894 2853}
9977c894 2854
d3cc5bc4
AS		 2855static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2856{
2857 TCPCharDriver *s = chr->opaque;
9894dc0c 2858 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2859}
2860
5b498459 2861static void tcp_chr_free_connection(CharDriverState *chr)
7b0bfdf5
NN		 2862{
2863 TCPCharDriver *s = chr->opaque;
5b498459 2864 int i;
7b0bfdf5 2865
342f7a9d
MAL		 2866 if (!s->connected) {
2867 return;
2868 }
2869
5b498459
MAL		 2870 if (s->read_msgfds_num) {
2871 for (i = 0; i < s->read_msgfds_num; i++) {
2872 close(s->read_msgfds[i]);
2873 }
2874 g_free(s->read_msgfds);
2875 s->read_msgfds = NULL;
2876 s->read_msgfds_num = 0;
7b0bfdf5 2877 }
5b498459 2878
6167ebbd 2879 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2880 remove_fd_in_watch(chr);
a8fb5427
DB		 2881 object_unref(OBJECT(s->sioc));
2882 s->sioc = NULL;
9894dc0c
DB		 2883 object_unref(OBJECT(s->ioc));
2884 s->ioc = NULL;
0ff0fad2 2885 g_free(chr->filename);
5b498459
MAL		 2886 chr->filename = NULL;
2887 s->connected = 0;
2888}
2889
2890static void tcp_chr_disconnect(CharDriverState *chr)
2891{
2892 TCPCharDriver *s = chr->opaque;
2893
2894 if (!s->connected) {
2895 return;
2896 }
2897
2898 tcp_chr_free_connection(chr);
2899
2900 if (s->listen_ioc) {
2901 s->listen_tag = qio_channel_add_watch(
2902 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
2903 }
0ff0fad2
DB		 2904 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2905 s->is_listen, s->is_telnet);
7b0bfdf5 2906 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2907 if (s->reconnect_time) {
2908 qemu_chr_socket_restart_timer(chr);
2909 }
7b0bfdf5
NN		 2910}
2911
9894dc0c 2912static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2913{
2914 CharDriverState *chr = opaque;
2915 TCPCharDriver *s = chr->opaque;
9bd7854e 2916 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2917 int len, size;
2918
2ea5a7af 2919 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2920 return TRUE;
2ea5a7af 2921 }
6f97dba0
AL		 2922 len = sizeof(buf);
2923 if (len > s->max_size)
2924 len = s->max_size;
9977c894 2925 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2926 if (size == 0 || size == -1) {
6f97dba0 2927 /* connection closed */
7b0bfdf5 2928 tcp_chr_disconnect(chr);
6f97dba0
AL		 2929 } else if (size > 0) {
2930 if (s->do_telnetopt)
2931 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2932 if (size > 0)
fa5efccb 2933 qemu_chr_be_write(chr, buf, size);
6f97dba0 2934 }
2ea5a7af
AL		 2935
2936 return TRUE;
6f97dba0
AL		 2937}
2938
7b0bfdf5
NN		 2939static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2940{
2941 TCPCharDriver *s = chr->opaque;
2942 int size;
2943
2944 if (!s->connected) {
2945 return 0;
2946 }
2947
2948 size = tcp_chr_recv(chr, (void *) buf, len);
2949 if (size == 0) {
2950 /* connection closed */
2951 tcp_chr_disconnect(chr);
2952 }
2953
2954 return size;
2955}
2956
6f97dba0
AL		 2957static void tcp_chr_connect(void *opaque)
2958{
2959 CharDriverState *chr = opaque;
2960 TCPCharDriver *s = chr->opaque;
16cc4ffe 2961
0ff0fad2 2962 g_free(chr->filename);
a8fb5427
DB		 2963 chr->filename = sockaddr_to_str(
2964 &s->sioc->localAddr, s->sioc->localAddrLen,
2965 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2966 s->is_listen, s->is_telnet);
6f97dba0
AL		 2967
2968 s->connected = 1;
9894dc0c
DB		 2969 if (s->ioc) {
2970 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2971 tcp_chr_read_poll,
7ba9addc 2972 tcp_chr_read, chr);
bbdd2ad0 2973 }
fee204fd 2974 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2975}
2976
ac1b84dd
GH		 2977static void tcp_chr_update_read_handler(CharDriverState *chr)
2978{
2979 TCPCharDriver *s = chr->opaque;
2980
1e94f23d
DB		 2981 if (!s->connected) {
2982 return;
2983 }
2984
ac1b84dd 2985 remove_fd_in_watch(chr);
9894dc0c
DB		 2986 if (s->ioc) {
2987 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2988 tcp_chr_read_poll,
ac1b84dd
GH		 2989 tcp_chr_read, chr);
2990 }
2991}
2992
f2001a7e
DB		 2993typedef struct {
2994 CharDriverState *chr;
2995 char buf[12];
2996 size_t buflen;
2997} TCPCharDriverTelnetInit;
2998
2999static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
3000 GIOCondition cond G_GNUC_UNUSED,
3001 gpointer user_data)
6f97dba0 3002{
f2001a7e
DB		 3003 TCPCharDriverTelnetInit *init = user_data;
3004 ssize_t ret;
3005
3006 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3007 if (ret < 0) {
3008 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3009 ret = 0;
3010 } else {
3011 tcp_chr_disconnect(init->chr);
3012 return FALSE;
3013 }
3014 }
3015 init->buflen -= ret;
3016
3017 if (init->buflen == 0) {
3018 tcp_chr_connect(init->chr);
3019 return FALSE;
3020 }
3021
3022 memmove(init->buf, init->buf + ret, init->buflen);
3023
3024 return TRUE;
3025}
3026
3027static void tcp_chr_telnet_init(CharDriverState *chr)
3028{
3029 TCPCharDriver *s = chr->opaque;
3030 TCPCharDriverTelnetInit *init =
3031 g_new0(TCPCharDriverTelnetInit, 1);
3032 size_t n = 0;
3033
3034 init->chr = chr;
3035 init->buflen = 12;
3036
3037#define IACSET(x, a, b, c) \
3038 do { \
3039 x[n++] = a; \
3040 x[n++] = b; \
3041 x[n++] = c; \
3042 } while (0)
3043
3044 /* Prep the telnet negotion to put telnet in binary,
3045 * no echo, single char mode */
3046 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3047 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3048 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3049 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3050
3051#undef IACSET
3052
3053 qio_channel_add_watch(
3054 s->ioc, G_IO_OUT,
3055 tcp_chr_telnet_init_io,
3056 init, NULL);
6f97dba0
AL		 3057}
3058
a8fb5427
DB		 3059
3060static void tcp_chr_tls_handshake(Object *source,
3061 Error *err,
3062 gpointer user_data)
3063{
3064 CharDriverState *chr = user_data;
3065 TCPCharDriver *s = chr->opaque;
3066
3067 if (err) {
3068 tcp_chr_disconnect(chr);
3069 } else {
3070 if (s->do_telnetopt) {
3071 tcp_chr_telnet_init(chr);
3072 } else {
3073 tcp_chr_connect(chr);
3074 }
3075 }
3076}
3077
3078
3079static void tcp_chr_tls_init(CharDriverState *chr)
3080{
3081 TCPCharDriver *s = chr->opaque;
3082 QIOChannelTLS *tioc;
3083 Error *err = NULL;
3084
3085 if (s->is_listen) {
3086 tioc = qio_channel_tls_new_server(
3087 s->ioc, s->tls_creds,
3088 NULL, /* XXX Use an ACL */
3089 &err);
3090 } else {
3091 tioc = qio_channel_tls_new_client(
3092 s->ioc, s->tls_creds,
32bafa8f 3093 s->addr->u.inet.data->host,
a8fb5427
DB		 3094 &err);
3095 }
3096 if (tioc == NULL) {
3097 error_free(err);
3098 tcp_chr_disconnect(chr);
5be53356 3099 return;
a8fb5427
DB		 3100 }
3101 object_unref(OBJECT(s->ioc));
3102 s->ioc = QIO_CHANNEL(tioc);
3103
3104 qio_channel_tls_handshake(tioc,
3105 tcp_chr_tls_handshake,
3106 chr,
3107 NULL);
3108}
3109
3110
9894dc0c 3111static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3112{
3113 TCPCharDriver *s = chr->opaque;
9894dc0c 3114 if (s->ioc != NULL) {
13661089 3115 return -1;
9894dc0c 3116 }
13661089 3117
9894dc0c
DB		 3118 s->ioc = QIO_CHANNEL(sioc);
3119 object_ref(OBJECT(sioc));
a8fb5427
DB		 3120 s->sioc = sioc;
3121 object_ref(OBJECT(sioc));
9894dc0c 3122
64c800f8
DB		 3123 qio_channel_set_blocking(s->ioc, false, NULL);
3124
9894dc0c
DB		 3125 if (s->do_nodelay) {
3126 qio_channel_set_delay(s->ioc, false);
3127 }
910b6368
PB		 3128 if (s->listen_tag) {
3129 g_source_remove(s->listen_tag);
3130 s->listen_tag = 0;
3131 }
f2001a7e 3132
a8fb5427
DB		 3133 if (s->tls_creds) {
3134 tcp_chr_tls_init(chr);
f2001a7e 3135 } else {
a8fb5427
DB		 3136 if (s->do_telnetopt) {
3137 tcp_chr_telnet_init(chr);
3138 } else {
3139 tcp_chr_connect(chr);
3140 }
f2001a7e 3141 }
13661089
DB		 3142
3143 return 0;
3144}
3145
9894dc0c
DB		 3146
3147static int tcp_chr_add_client(CharDriverState *chr, int fd)
3148{
3149 int ret;
3150 QIOChannelSocket *sioc;
3151
3152 sioc = qio_channel_socket_new_fd(fd, NULL);
3153 if (!sioc) {
3154 return -1;
3155 }
9894dc0c
DB		 3156 ret = tcp_chr_new_client(chr, sioc);
3157 object_unref(OBJECT(sioc));
3158 return ret;
3159}
3160
3161static gboolean tcp_chr_accept(QIOChannel *channel,
3162 GIOCondition cond,
3163 void *opaque)
6f97dba0
AL		 3164{
3165 CharDriverState *chr = opaque;
9894dc0c 3166 QIOChannelSocket *sioc;
6f97dba0 3167
9894dc0c
DB		 3168 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3169 NULL);
3170 if (!sioc) {
3171 return TRUE;
6f97dba0 3172 }
9894dc0c 3173
9894dc0c
DB		 3174 tcp_chr_new_client(chr, sioc);
3175
3176 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3177
3178 return TRUE;
6f97dba0
AL		 3179}
3180
d7a04fd7
MAL		 3181static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
3182{
3183 TCPCharDriver *s = chr->opaque;
3184 QIOChannelSocket *sioc;
3185
1dc8a669
MAL		 3186 /* It can't wait on s->connected, since it is set asynchronously
3187 * in TLS and telnet cases, only wait for an accepted socket */
3188 while (!s->ioc) {
d7a04fd7
MAL		 3189 if (s->is_listen) {
3190 fprintf(stderr, "QEMU waiting for connection on: %s\n",
3191 chr->filename);
3192 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3193 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3194 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3195 } else {
3196 sioc = qio_channel_socket_new();
3197 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3198 object_unref(OBJECT(sioc));
3199 return -1;
3200 }
3201 tcp_chr_new_client(chr, sioc);
3202 object_unref(OBJECT(sioc));
3203 }
3204 }
3205
3206 return 0;
3207}
3208
6b6723c3
MAL		 3209int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
3210{
3211 if (chr->chr_wait_connected) {
3212 return chr->chr_wait_connected(chr, errp);
3213 }
3214
3215 return 0;
3216}
3217
6f97dba0
AL		 3218static void tcp_chr_close(CharDriverState *chr)
3219{
3220 TCPCharDriver *s = chr->opaque;
5b498459
MAL		 3221
3222 tcp_chr_free_connection(chr);
cfb429cb 3223
5dd1f02b
CM		 3224 if (s->reconnect_timer) {
3225 g_source_remove(s->reconnect_timer);
3226 s->reconnect_timer = 0;
3227 }
cfb429cb 3228 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3229 if (s->listen_tag) {
3230 g_source_remove(s->listen_tag);
3231 s->listen_tag = 0;
3232 }
3233 if (s->listen_ioc) {
3234 object_unref(OBJECT(s->listen_ioc));
819f56b7 3235 }
a8fb5427
DB		 3236 if (s->tls_creds) {
3237 object_unref(OBJECT(s->tls_creds));
3238 }
7267c094 3239 g_free(s);
a425d23f 3240 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3241}
3242
43ded1a0 3243
9894dc0c 3244static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3245{
9894dc0c 3246 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3247 CharDriverState *chr = opaque;
5008e5b7 3248 TCPCharDriver *s = chr->opaque;
5dd1f02b 3249
9894dc0c 3250 if (err) {
5008e5b7 3251 check_report_connect_error(chr, err);
9894dc0c 3252 object_unref(src);
5dd1f02b
CM		 3253 return;
3254 }
3255
5008e5b7 3256 s->connect_err_reported = false;
f50dfe45
DB		 3257 tcp_chr_new_client(chr, sioc);
3258 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3259}
3260
f6bd5d6e 3261
51767e7c 3262/*********************************************************/
3949e594 3263/* Ring buffer chardev */
51767e7c
LL		 3264
3265typedef struct {
3266 size_t size;
3267 size_t prod;
3268 size_t cons;
3269 uint8_t *cbuf;
3949e594 3270} RingBufCharDriver;
51767e7c 3271
3949e594 3272static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3273{
3949e594 3274 const RingBufCharDriver *d = chr->opaque;
51767e7c 3275
5c230105 3276 return d->prod - d->cons;
51767e7c
LL		 3277}
3278
9005b2a7 3279/* Called with chr_write_lock held. */
3949e594 3280static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3281{
3949e594 3282 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3283 int i;
3284
3285 if (!buf || (len < 0)) {
3286 return -1;
3287 }
3288
3289 for (i = 0; i < len; i++ ) {
5c230105
MA		 3290 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3291 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3292 d->cons = d->prod - d->size;
3293 }
3294 }
3295
3296 return 0;
3297}
3298
3949e594 3299static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3300{
3949e594 3301 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3302 int i;
3303
9005b2a7 3304 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3305 for (i = 0; i < len && d->cons != d->prod; i++) {
3306 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3307 }
9005b2a7 3308 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3309
3310 return i;
3311}
3312
3949e594 3313static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3314{
3949e594 3315 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3316
3317 g_free(d->cbuf);
3318 g_free(d);
3319 chr->opaque = NULL;
3320}
3321
479f09a1
PB		 3322static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3323 ChardevBackend *backend,
3324 ChardevReturn *ret,
4f57378f 3325 Error **errp)
51767e7c 3326{
32bafa8f 3327 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3328 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3329 CharDriverState *chr;
3949e594 3330 RingBufCharDriver *d;
51767e7c 3331
d0d7708b
DB		 3332 chr = qemu_chr_alloc(common, errp);
3333 if (!chr) {
3334 return NULL;
3335 }
51767e7c
LL		 3336 d = g_malloc(sizeof(*d));
3337
1da48c65 3338 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3339
3340 /* The size must be power of 2 */
3341 if (d->size & (d->size - 1)) {
4f57378f 3342 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3343 goto fail;
3344 }
3345
3346 d->prod = 0;
3347 d->cons = 0;
3348 d->cbuf = g_malloc0(d->size);
3349
3350 chr->opaque = d;
3949e594
MA		 3351 chr->chr_write = ringbuf_chr_write;
3352 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3353
3354 return chr;
3355
3356fail:
3357 g_free(d);
d0d7708b 3358 qemu_chr_free_common(chr);
51767e7c
LL		 3359 return NULL;
3360}
3361
8e597779 3362bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3363{
3949e594 3364 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3365}
3366
3949e594 3367void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3368 bool has_format, enum DataFormat format,
1f590cf9
LL		 3369 Error **errp)
3370{
3371 CharDriverState *chr;
c4f331b6 3372 const uint8_t *write_data;
1f590cf9 3373 int ret;
3d1bba20 3374 gsize write_count;
1f590cf9
LL		 3375
3376 chr = qemu_chr_find(device);
3377 if (!chr) {
1a69278e 3378 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3379 return;
3380 }
3381
3949e594
MA		 3382 if (!chr_is_ringbuf(chr)) {
3383 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3384 return;
3385 }
3386
1f590cf9 3387 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3388 write_data = qbase64_decode(data, -1,
3389 &write_count,
3390 errp);
3391 if (!write_data) {
3392 return;
3393 }
1f590cf9
LL		 3394 } else {
3395 write_data = (uint8_t *)data;
82e59a67 3396 write_count = strlen(data);
1f590cf9
LL		 3397 }
3398
3949e594 3399 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3400
13289fb5
MA		 3401 if (write_data != (uint8_t *)data) {
3402 g_free((void *)write_data);
3403 }
3404
1f590cf9
LL		 3405 if (ret < 0) {
3406 error_setg(errp, "Failed to write to device %s", device);
3407 return;
3408 }
3409}
3410
3949e594 3411char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3412 bool has_format, enum DataFormat format,
3413 Error **errp)
49b6d722
LL		 3414{
3415 CharDriverState *chr;
c4f331b6 3416 uint8_t *read_data;
49b6d722 3417 size_t count;
3ab651fc 3418 char *data;
49b6d722
LL		 3419
3420 chr = qemu_chr_find(device);
3421 if (!chr) {
1a69278e 3422 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3423 return NULL;
3424 }
3425
3949e594
MA		 3426 if (!chr_is_ringbuf(chr)) {
3427 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3428 return NULL;
3429 }
3430
3431 if (size <= 0) {
3432 error_setg(errp, "size must be greater than zero");
3433 return NULL;
3434 }
3435
3949e594 3436 count = ringbuf_count(chr);
49b6d722 3437 size = size > count ? count : size;
44f3bcd2 3438 read_data = g_malloc(size + 1);
49b6d722 3439
3949e594 3440 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3441
3442 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3443 data = g_base64_encode(read_data, size);
13289fb5 3444 g_free(read_data);
49b6d722 3445 } else {
3949e594
MA		 3446 /*
3447 * FIXME should read only complete, valid UTF-8 characters up
3448 * to @size bytes. Invalid sequences should be replaced by a
3449 * suitable replacement character. Except when (and only
3450 * when) ring buffer lost characters since last read, initial
3451 * continuation characters should be dropped.
3452 */
44f3bcd2 3453 read_data[size] = 0;
3ab651fc 3454 data = (char *)read_data;
49b6d722
LL		 3455 }
3456
3ab651fc 3457 return data;
49b6d722
LL		 3458}
3459
33521634 3460QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3461{
6ea314d9 3462 char host[65], port[33], width[8], height[8];
aeb2c47a 3463 int pos;
7d31544f 3464 const char *p;
191bc01b 3465 QemuOpts *opts;
8be7e7e4 3466 Error *local_err = NULL;
191bc01b 3467
8be7e7e4 3468 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3469 if (local_err) {
33394884 3470 error_report_err(local_err);
191bc01b 3471 return NULL;
8be7e7e4 3472 }
191bc01b 3473
7591c5c1
GH		 3474 if (strstart(filename, "mon:", &p)) {
3475 filename = p;
f43e47db 3476 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3477 if (strcmp(filename, "stdio") == 0) {
3478 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3479 * but pass it to the guest. Handle this only for compat syntax,
3480 * for -chardev syntax we have special option for this.
3481 * This is what -nographic did, redirecting+muxing serial+monitor
3482 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3483 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3484 }
7591c5c1
GH		 3485 }
3486
f0457e8d
GH		 3487 if (strcmp(filename, "null") == 0 ||
3488 strcmp(filename, "pty") == 0 ||
3489 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3490 strcmp(filename, "braille") == 0 ||
5692399f 3491 strcmp(filename, "testdev") == 0 ||
f0457e8d 3492 strcmp(filename, "stdio") == 0) {
f43e47db 3493 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3494 return opts;
3495 }
6ea314d9 3496 if (strstart(filename, "vc", &p)) {
f43e47db 3497 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3498 if (*p == ':') {
49aa4058 3499 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3500 /* pixels */
f43e47db
MA		 3501 qemu_opt_set(opts, "width", width, &error_abort);
3502 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3503 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3504 /* chars */
f43e47db
MA		 3505 qemu_opt_set(opts, "cols", width, &error_abort);
3506 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3507 } else {
3508 goto fail;
3509 }
3510 }
3511 return opts;
3512 }
d6c983cd 3513 if (strcmp(filename, "con:") == 0) {
f43e47db 3514 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3515 return opts;
3516 }
48b76496 3517 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3518 qemu_opt_set(opts, "backend", "serial", &error_abort);
3519 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3520 return opts;
3521 }
7d31544f 3522 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3523 qemu_opt_set(opts, "backend", "file", &error_abort);
3524 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3525 return opts;
3526 }
3527 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3528 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3529 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3530 return opts;
3531 }
aeb2c47a
GH		 3532 if (strstart(filename, "tcp:", &p) ||
3533 strstart(filename, "telnet:", &p)) {
3534 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3535 host[0] = 0;
3536 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3537 goto fail;
3538 }
f43e47db
MA		 3539 qemu_opt_set(opts, "backend", "socket", &error_abort);
3540 qemu_opt_set(opts, "host", host, &error_abort);
3541 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3542 if (p[pos] == ',') {
dc523cd3
MA		 3543 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3544 if (local_err) {
3545 error_report_err(local_err);
aeb2c47a 3546 goto fail;
dc523cd3 3547 }
aeb2c47a
GH		 3548 }
3549 if (strstart(filename, "telnet:", &p))
f43e47db 3550 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3551 return opts;
3552 }
7e1b35b4 3553 if (strstart(filename, "udp:", &p)) {
f43e47db 3554 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3555 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3556 host[0] = 0;
39324ca4 3557 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3558 goto fail;
3559 }
3560 }
f43e47db
MA		 3561 qemu_opt_set(opts, "host", host, &error_abort);
3562 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3563 if (p[pos] == '@') {
3564 p += pos + 1;
3565 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3566 host[0] = 0;
3567 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3568 goto fail;
3569 }
3570 }
f43e47db
MA		 3571 qemu_opt_set(opts, "localaddr", host, &error_abort);
3572 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3573 }
3574 return opts;
3575 }
aeb2c47a 3576 if (strstart(filename, "unix:", &p)) {
f43e47db 3577 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3578 qemu_opts_do_parse(opts, p, "path", &local_err);
3579 if (local_err) {
3580 error_report_err(local_err);
aeb2c47a 3581 goto fail;
dc523cd3 3582 }
aeb2c47a
GH		 3583 return opts;
3584 }
48b76496
GH		 3585 if (strstart(filename, "/dev/parport", NULL) ||
3586 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3587 qemu_opt_set(opts, "backend", "parport", &error_abort);
3588 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3589 return opts;
3590 }
3591 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3592 qemu_opt_set(opts, "backend", "tty", &error_abort);
3593 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3594 return opts;
3595 }
191bc01b 3596
aeb2c47a 3597fail:
191bc01b
GH		 3598 qemu_opts_del(opts);
3599 return NULL;
3600}
3601
21a933ea 3602void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3603{
3604 const char *logfile = qemu_opt_get(opts, "logfile");
3605
3606 backend->has_logfile = logfile != NULL;
3607 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3608
3609 backend->has_logappend = true;
3610 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3611}
3612
3613
846e2e49
GH		 3614static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3615 Error **errp)
3616{
3617 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3618 ChardevFile *file;
846e2e49
GH		 3619
3620 if (path == NULL) {
3621 error_setg(errp, "chardev: file: no filename given");
3622 return;
3623 }
32bafa8f 3624 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3625 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3626 file->out = g_strdup(path);
31e38a22 3627
f194a1ae
EB		 3628 file->has_append = true;
3629 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3630}
3631
7c358031
GH		 3632static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3633 Error **errp)
3634{
f194a1ae
EB		 3635 ChardevStdio *stdio;
3636
32bafa8f 3637 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3638 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3639 stdio->has_signal = true;
3640 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3641}
3642
6511d396 3643#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3644static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3645 Error **errp)
3646{
3647 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3648 ChardevHostdev *serial;
0f1cb51d
GH		 3649
3650 if (device == NULL) {
3651 error_setg(errp, "chardev: serial/tty: no device path given");
3652 return;
3653 }
32bafa8f 3654 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3655 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3656 serial->device = g_strdup(device);
0f1cb51d 3657}
6511d396 3658#endif
0f1cb51d 3659
38bfb1a6 3660#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3661static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3662 Error **errp)
3663{
3664 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3665 ChardevHostdev *parallel;
dc375097
GH		 3666
3667 if (device == NULL) {
3668 error_setg(errp, "chardev: parallel: no device path given");
3669 return;
3670 }
32bafa8f 3671 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3672 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3673 parallel->device = g_strdup(device);
dc375097 3674}
38bfb1a6 3675#endif
dc375097 3676
548cbb36
GH		 3677static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3678 Error **errp)
3679{
3680 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3681 ChardevHostdev *dev;
548cbb36
GH		 3682
3683 if (device == NULL) {
3684 error_setg(errp, "chardev: pipe: no device path given");
3685 return;
3686 }
32bafa8f 3687 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3688 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3689 dev->device = g_strdup(device);
548cbb36
GH		 3690}
3691
4f57378f
MA		 3692static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3693 Error **errp)
1da48c65
GH		 3694{
3695 int val;
f194a1ae 3696 ChardevRingbuf *ringbuf;
1da48c65 3697
32bafa8f 3698 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3699 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3700
0f953051 3701 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3702 if (val != 0) {
f194a1ae
EB		 3703 ringbuf->has_size = true;
3704 ringbuf->size = val;
1da48c65
GH		 3705 }
3706}
3707
bb6fb7c0
GH		 3708static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3709 Error **errp)
3710{
3711 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3712 ChardevMux *mux;
bb6fb7c0
GH		 3713
3714 if (chardev == NULL) {
3715 error_setg(errp, "chardev: mux: no chardev given");
3716 return;
3717 }
32bafa8f 3718 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3719 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3720 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3721}
3722
dafd325d
PM		 3723static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3724 Error **errp)
3725{
3726 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3727 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3728 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3729 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3730 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3731 const char *path = qemu_opt_get(opts, "path");
3732 const char *host = qemu_opt_get(opts, "host");
3733 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3734 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3735 SocketAddress *addr;
f194a1ae 3736 ChardevSocket *sock;
dafd325d
PM		 3737
3738 if (!path) {
3739 if (!host) {
3740 error_setg(errp, "chardev: socket: no host given");
3741 return;
3742 }
3743 if (!port) {
3744 error_setg(errp, "chardev: socket: no port given");
3745 return;
3746 }
a8fb5427
DB		 3747 } else {
3748 if (tls_creds) {
3749 error_setg(errp, "TLS can only be used over TCP socket");
3750 return;
3751 }
dafd325d
PM		 3752 }
3753
32bafa8f 3754 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3755 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3756
f194a1ae
EB		 3757 sock->has_nodelay = true;
3758 sock->nodelay = do_nodelay;
3759 sock->has_server = true;
3760 sock->server = is_listen;
3761 sock->has_telnet = true;
3762 sock->telnet = is_telnet;
3763 sock->has_wait = true;
3764 sock->wait = is_waitconnect;
3765 sock->has_reconnect = true;
3766 sock->reconnect = reconnect;
3767 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3768
3769 addr = g_new0(SocketAddress, 1);
3770 if (path) {
0399293e 3771 UnixSocketAddress *q_unix;
130257dc 3772 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3773 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3774 q_unix->path = g_strdup(path);
dafd325d 3775 } else {
130257dc 3776 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3777 addr->u.inet.data = g_new(InetSocketAddress, 1);
3778 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3779 .host = g_strdup(host),
3780 .port = g_strdup(port),
3781 .has_to = qemu_opt_get(opts, "to"),
3782 .to = qemu_opt_get_number(opts, "to", 0),
3783 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3784 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3785 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3786 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3787 };
dafd325d 3788 }
f194a1ae 3789 sock->addr = addr;
dafd325d
PM		 3790}
3791
90a14bfe
PM		 3792static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3793 Error **errp)
3794{
3795 const char *host = qemu_opt_get(opts, "host");
3796 const char *port = qemu_opt_get(opts, "port");
3797 const char *localaddr = qemu_opt_get(opts, "localaddr");
3798 const char *localport = qemu_opt_get(opts, "localport");
3799 bool has_local = false;
3800 SocketAddress *addr;
f194a1ae 3801 ChardevUdp *udp;
90a14bfe
PM		 3802
3803 if (host == NULL || strlen(host) == 0) {
3804 host = "localhost";
3805 }
3806 if (port == NULL || strlen(port) == 0) {
3807 error_setg(errp, "chardev: udp: remote port not specified");
3808 return;
3809 }
3810 if (localport == NULL || strlen(localport) == 0) {
3811 localport = "0";
3812 } else {
3813 has_local = true;
3814 }
3815 if (localaddr == NULL || strlen(localaddr) == 0) {
3816 localaddr = "";
3817 } else {
3818 has_local = true;
3819 }
3820
32bafa8f 3821 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 3822 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3823
3824 addr = g_new0(SocketAddress, 1);
130257dc 3825 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3826 addr->u.inet.data = g_new(InetSocketAddress, 1);
3827 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3828 .host = g_strdup(host),
3829 .port = g_strdup(port),
3830 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3831 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3832 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3833 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3834 };
f194a1ae 3835 udp->remote = addr;
90a14bfe
PM		 3836
3837 if (has_local) {
f194a1ae 3838 udp->has_local = true;
90a14bfe 3839 addr = g_new0(SocketAddress, 1);
130257dc 3840 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3841 addr->u.inet.data = g_new(InetSocketAddress, 1);
3842 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3843 .host = g_strdup(localaddr),
3844 .port = g_strdup(localport),
3845 };
f194a1ae 3846 udp->local = addr;
90a14bfe
PM		 3847 }
3848}
3849
d654f34e 3850typedef struct CharDriver {
191bc01b 3851 const char *name;
99aec012 3852 ChardevBackendKind kind;
2c5f4882 3853 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3854 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3855 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3856} CharDriver;
3857
3858static GSList *backends;
3859
e4d50d47 3860void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3861 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3862 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3863 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3864{
3865 CharDriver *s;
3866
3867 s = g_malloc0(sizeof(*s));
3868 s->name = g_strdup(name);
3869 s->kind = kind;
3870 s->parse = parse;
4ca17281 3871 s->create = create;
2c5f4882
GH		 3872
3873 backends = g_slist_append(backends, s);
3874}
3875
f69554b9 3876CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3877 void (*init)(struct CharDriverState *s),
3878 Error **errp)
191bc01b 3879{
0aff637e 3880 Error *local_err = NULL;
d654f34e 3881 CharDriver *cd;
191bc01b 3882 CharDriverState *chr;
d654f34e 3883 GSList *i;
a61ae7f8
PM		 3884 ChardevReturn *ret = NULL;
3885 ChardevBackend *backend;
3886 const char *id = qemu_opts_id(opts);
3887 char *bid = NULL;
191bc01b 3888
a61ae7f8 3889 if (id == NULL) {
312fd5f2 3890 error_setg(errp, "chardev: no id specified");
2274ae9d 3891 goto err;
191bc01b
GH		 3892 }
3893
1bbd185f 3894 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3895 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3896 qemu_opts_id(opts));
2274ae9d 3897 goto err;
1bbd185f 3898 }
d654f34e
AL		 3899 for (i = backends; i; i = i->next) {
3900 cd = i->data;
3901
3902 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3903 break;
d654f34e 3904 }
191bc01b 3905 }
d654f34e 3906 if (i == NULL) {
312fd5f2 3907 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3908 qemu_opt_get(opts, "backend"));
e668287d 3909 goto err;
191bc01b
GH		 3910 }
3911
a61ae7f8 3912 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3913
a61ae7f8
PM		 3914 if (qemu_opt_get_bool(opts, "mux", 0)) {
3915 bid = g_strdup_printf("%s-base", id);
3916 }
2c5f4882 3917
a61ae7f8 3918 chr = NULL;
130257dc 3919 backend->type = cd->kind;
a61ae7f8
PM		 3920 if (cd->parse) {
3921 cd->parse(opts, backend, &local_err);
3922 if (local_err) {
3923 error_propagate(errp, local_err);
2c5f4882
GH		 3924 goto qapi_out;
3925 }
d0d7708b
DB		 3926 } else {
3927 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3928 qemu_chr_parse_common(opts, cc);
32bafa8f 3929 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 3930 }
d0d7708b 3931
a61ae7f8
PM		 3932 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3933 if (!ret) {
3934 goto qapi_out;
191bc01b
GH		 3935 }
3936
a61ae7f8
PM		 3937 if (bid) {
3938 qapi_free_ChardevBackend(backend);
3939 qapi_free_ChardevReturn(ret);
3940 backend = g_new0(ChardevBackend, 1);
32bafa8f 3941 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 3942 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 3943 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 3944 ret = qmp_chardev_add(id, backend, errp);
3945 if (!ret) {
3946 chr = qemu_chr_find(bid);
3947 qemu_chr_delete(chr);
3948 chr = NULL;
3949 goto qapi_out;
3950 }
bd5c51ee 3951 }
7591c5c1 3952
a61ae7f8 3953 chr = qemu_chr_find(id);
2274ae9d 3954 chr->opts = opts;
a61ae7f8
PM		 3955
3956qapi_out:
3957 qapi_free_ChardevBackend(backend);
3958 qapi_free_ChardevReturn(ret);
3959 g_free(bid);
191bc01b 3960 return chr;
2274ae9d
GH		 3961
3962err:
3963 qemu_opts_del(opts);
3964 return NULL;
191bc01b
GH		 3965}
3966
33577b47
PD		 3967CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3968 void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3969{
3970 const char *p;
3971 CharDriverState *chr;
191bc01b 3972 QemuOpts *opts;
bd2d80b2 3973 Error *err = NULL;
191bc01b 3974
c845f401
GH		 3975 if (strstart(filename, "chardev:", &p)) {
3976 return qemu_chr_find(p);
3977 }
3978
191bc01b 3979 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3980 if (!opts)
3981 return NULL;
6f97dba0 3982
bd2d80b2 3983 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3984 if (err) {
565f65d2 3985 error_report_err(err);
bd2d80b2 3986 }
7e1b35b4 3987 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3988 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3989 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3990 }
3991 return chr;
3992}
3993
33577b47
PD		 3994CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3995{
3996 CharDriverState *chr;
3997 chr = qemu_chr_new_noreplay(label, filename, init);
3998 if (chr) {
3999 chr->replay = replay_mode != REPLAY_MODE_NONE;
4000 if (chr->replay && chr->chr_ioctl) {
4001 fprintf(stderr,
4002 "Replay: ioctl is not supported for serial devices yet\n");
4003 }
4004 replay_register_char_driver(chr);
4005 }
4006 return chr;
4007}
4008
15f31519 4009void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 4010{
4011 if (chr->chr_set_echo) {
4012 chr->chr_set_echo(chr, echo);
4013 }
4014}
4015
8e25daa8 4016void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 4017{
8e25daa8 4018 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 4019 return;
4020 }
8e25daa8 4021 chr->fe_open = fe_open;
574b711a
HG		 4022 if (chr->chr_set_fe_open) {
4023 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4024 }
4025}
4026
d61b0c9a
MAL		 4027void qemu_chr_fe_event(struct CharDriverState *chr, int event)
4028{
4029 if (chr->chr_fe_event) {
4030 chr->chr_fe_event(chr, event);
4031 }
4032}
4033
6f1de6b7
PB		 4034guint qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
4035 GIOFunc func, void *user_data)
23673ca7
AL		 4036{
4037 GSource *src;
4038 guint tag;
4039
4040 if (s->chr_add_watch == NULL) {
6f1de6b7 4041 return 0;
23673ca7
AL		 4042 }
4043
4044 src = s->chr_add_watch(s, cond);
62c339c5 4045 if (!src) {
6f1de6b7 4046 return 0;
62c339c5
PB		 4047 }
4048
23673ca7
AL		 4049 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4050 tag = g_source_attach(src, NULL);
4051 g_source_unref(src);
4052
4053 return tag;
4054}
4055
44c473de
HG		 4056int qemu_chr_fe_claim(CharDriverState *s)
4057{
4058 if (s->avail_connections < 1) {
4059 return -1;
4060 }
4061 s->avail_connections--;
4062 return 0;
4063}
4064
4065void qemu_chr_fe_claim_no_fail(CharDriverState *s)
4066{
4067 if (qemu_chr_fe_claim(s) != 0) {
4068 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
4069 __func__, s->label);
4070 exit(1);
4071 }
4072}
4073
4074void qemu_chr_fe_release(CharDriverState *s)
4075{
4076 s->avail_connections++;
4077}
4078
7d9d17f7
TM		 4079void qemu_chr_disconnect(CharDriverState *chr)
4080{
4081 if (chr->chr_disconnect) {
4082 chr->chr_disconnect(chr);
4083 }
4084}
4085
d0d7708b 4086static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4087{
7267c094
AL		 4088 g_free(chr->filename);
4089 g_free(chr->label);
4ad60880 4090 qemu_opts_del(chr->opts);
d0d7708b
DB		 4091 if (chr->logfd != -1) {
4092 close(chr->logfd);
4093 }
fefd749c 4094 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4095 g_free(chr);
6f97dba0
AL		 4096}
4097
d0d7708b
DB		 4098void qemu_chr_free(CharDriverState *chr)
4099{
4100 if (chr->chr_close) {
4101 chr->chr_close(chr);
4102 }
4103 qemu_chr_free_common(chr);
4104}
4105
1ad78ea5
MAL		 4106void qemu_chr_delete(CharDriverState *chr)
4107{
4108 QTAILQ_REMOVE(&chardevs, chr, next);
4109 qemu_chr_free(chr);
4110}
4111
c5a415a0 4112ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4113{
c5a415a0 4114 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4115 CharDriverState *chr;
4116
72cf2d4f 4117 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4118 ChardevInfoList *info = g_malloc0(sizeof(*info));
4119 info->value = g_malloc0(sizeof(*info->value));
4120 info->value->label = g_strdup(chr->label);
4121 info->value->filename = g_strdup(chr->filename);
32a97ea1 4122 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4123
4124 info->next = chr_list;
4125 chr_list = info;
6f97dba0 4126 }
588b3832 4127
c5a415a0 4128 return chr_list;
6f97dba0 4129}
c845f401 4130
77d1c3c6
MK		 4131ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4132{
4133 ChardevBackendInfoList *backend_list = NULL;
4134 CharDriver *c = NULL;
4135 GSList *i = NULL;
4136
4137 for (i = backends; i; i = i->next) {
4138 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4139 c = i->data;
4140 info->value = g_malloc0(sizeof(*info->value));
4141 info->value->name = g_strdup(c->name);
4142
4143 info->next = backend_list;
4144 backend_list = info;
4145 }
4146
4147 return backend_list;
4148}
4149
c845f401
GH		 4150CharDriverState *qemu_chr_find(const char *name)
4151{
4152 CharDriverState *chr;
4153
72cf2d4f 4154 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4155 if (strcmp(chr->label, name) != 0)
4156 continue;
4157 return chr;
4158 }
4159 return NULL;
4160}
0beb4942 4161
4d454574
PB		 4162QemuOptsList qemu_chardev_opts = {
4163 .name = "chardev",
4164 .implied_opt_name = "backend",
4165 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4166 .desc = {
4167 {
4168 .name = "backend",
4169 .type = QEMU_OPT_STRING,
4170 },{
4171 .name = "path",
4172 .type = QEMU_OPT_STRING,
4173 },{
4174 .name = "host",
4175 .type = QEMU_OPT_STRING,
4176 },{
4177 .name = "port",
4178 .type = QEMU_OPT_STRING,
4179 },{
4180 .name = "localaddr",
4181 .type = QEMU_OPT_STRING,
4182 },{
4183 .name = "localport",
4184 .type = QEMU_OPT_STRING,
4185 },{
4186 .name = "to",
4187 .type = QEMU_OPT_NUMBER,
4188 },{
4189 .name = "ipv4",
4190 .type = QEMU_OPT_BOOL,
4191 },{
4192 .name = "ipv6",
4193 .type = QEMU_OPT_BOOL,
4194 },{
4195 .name = "wait",
4196 .type = QEMU_OPT_BOOL,
4197 },{
4198 .name = "server",
4199 .type = QEMU_OPT_BOOL,
4200 },{
4201 .name = "delay",
4202 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4203 },{
4204 .name = "reconnect",
4205 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4206 },{
4207 .name = "telnet",
4208 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4209 },{
4210 .name = "tls-creds",
4211 .type = QEMU_OPT_STRING,
4d454574
PB		 4212 },{
4213 .name = "width",
4214 .type = QEMU_OPT_NUMBER,
4215 },{
4216 .name = "height",
4217 .type = QEMU_OPT_NUMBER,
4218 },{
4219 .name = "cols",
4220 .type = QEMU_OPT_NUMBER,
4221 },{
4222 .name = "rows",
4223 .type = QEMU_OPT_NUMBER,
4224 },{
4225 .name = "mux",
4226 .type = QEMU_OPT_BOOL,
4227 },{
4228 .name = "signal",
4229 .type = QEMU_OPT_BOOL,
4230 },{
4231 .name = "name",
4232 .type = QEMU_OPT_STRING,
4233 },{
4234 .name = "debug",
4235 .type = QEMU_OPT_NUMBER,
51767e7c 4236 },{
3949e594 4237 .name = "size",
de1cc36e 4238 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4239 },{
4240 .name = "chardev",
4241 .type = QEMU_OPT_STRING,
31e38a22
OK		 4242 },{
4243 .name = "append",
4244 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4245 },{
4246 .name = "logfile",
4247 .type = QEMU_OPT_STRING,
4248 },{
4249 .name = "logappend",
4250 .type = QEMU_OPT_BOOL,
4d454574
PB		 4251 },
4252 { /* end of list */ }
4253 },
4254};
f1a1a356 4255
ffbdbe59
GH		 4256#ifdef _WIN32
4257
fd5b036c
PB		 4258static CharDriverState *qmp_chardev_open_file(const char *id,
4259 ChardevBackend *backend,
4260 ChardevReturn *ret,
4261 Error **errp)
ffbdbe59 4262{
32bafa8f 4263 ChardevFile *file = backend->u.file.data;
f194a1ae 4264 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59 4265 HANDLE out;
c025f689
SW		 4266 DWORD accessmode;
4267 DWORD flags;
ffbdbe59 4268
e859eda5 4269 if (file->has_in) {
ffbdbe59
GH		 4270 error_setg(errp, "input file not supported");
4271 return NULL;
4272 }
4273
c025f689
SW		 4274 if (file->has_append && file->append) {
4275 /* Append to file if it already exists. */
4276 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4277 flags = OPEN_ALWAYS;
4278 } else {
4279 /* Truncate file if it already exists. */
4280 accessmode = GENERIC_WRITE;
4281 flags = CREATE_ALWAYS;
4282 }
4283
4284 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4285 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4286 if (out == INVALID_HANDLE_VALUE) {
4287 error_setg(errp, "open %s failed", file->out);
4288 return NULL;
4289 }
d0d7708b 4290 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4291}
4292
6511d396
PB		 4293static CharDriverState *qmp_chardev_open_serial(const char *id,
4294 ChardevBackend *backend,
4295 ChardevReturn *ret,
d36b2b90 4296 Error **errp)
d59044ef 4297{
32bafa8f 4298 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4299 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4300 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4301}
4302
ffbdbe59
GH		 4303#else /* WIN32 */
4304
4305static int qmp_chardev_open_file_source(char *src, int flags,
4306 Error **errp)
4307{
4308 int fd = -1;
4309
4310 TFR(fd = qemu_open(src, flags, 0666));
4311 if (fd == -1) {
20c39760 4312 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4313 }
4314 return fd;
4315}
4316
fd5b036c
PB		 4317static CharDriverState *qmp_chardev_open_file(const char *id,
4318 ChardevBackend *backend,
4319 ChardevReturn *ret,
4320 Error **errp)
ffbdbe59 4321{
32bafa8f 4322 ChardevFile *file = backend->u.file.data;
f194a1ae 4323 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4324 int flags, in = -1, out;
ffbdbe59 4325
31e38a22
OK		 4326 flags = O_WRONLY | O_CREAT | O_BINARY;
4327 if (file->has_append && file->append) {
4328 flags |= O_APPEND;
4329 } else {
4330 flags |= O_TRUNC;
4331 }
4332
ffbdbe59 4333 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4334 if (out < 0) {
ffbdbe59
GH		 4335 return NULL;
4336 }
4337
e859eda5 4338 if (file->has_in) {
ffbdbe59
GH		 4339 flags = O_RDONLY;
4340 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4341 if (in < 0) {
ffbdbe59
GH		 4342 qemu_close(out);
4343 return NULL;
4344 }
4345 }
4346
d0d7708b 4347 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4348}
4349
d809ab95 4350#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4351static CharDriverState *qmp_chardev_open_serial(const char *id,
4352 ChardevBackend *backend,
4353 ChardevReturn *ret,
d36b2b90 4354 Error **errp)
d59044ef 4355{
32bafa8f 4356 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4357 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4358 int fd;
4359
4360 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4361 if (fd < 0) {
d36b2b90 4362 return NULL;
39099991 4363 }
f9e8cacc 4364 qemu_set_nonblock(fd);
d0d7708b 4365 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4366}
6511d396 4367#endif
d36b2b90 4368
d809ab95 4369#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4370static CharDriverState *qmp_chardev_open_parallel(const char *id,
4371 ChardevBackend *backend,
4372 ChardevReturn *ret,
d36b2b90
MA		 4373 Error **errp)
4374{
32bafa8f 4375 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4376 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4377 int fd;
4378
4379 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4380 if (fd < 0) {
d59044ef
GH		 4381 return NULL;
4382 }
d0d7708b 4383 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4384}
d809ab95 4385#endif
d59044ef 4386
ffbdbe59
GH		 4387#endif /* WIN32 */
4388
5dd1f02b
CM		 4389static gboolean socket_reconnect_timeout(gpointer opaque)
4390{
4391 CharDriverState *chr = opaque;
4392 TCPCharDriver *s = chr->opaque;
317856ca 4393 QIOChannelSocket *sioc;
5dd1f02b
CM		 4394
4395 s->reconnect_timer = 0;
4396
4397 if (chr->be_open) {
4398 return false;
4399 }
4400
317856ca
DB		 4401 sioc = qio_channel_socket_new();
4402 qio_channel_socket_connect_async(sioc, s->addr,
4403 qemu_chr_socket_connected,
4404 chr, NULL);
5dd1f02b
CM		 4405
4406 return false;
4407}
4408
dbba8d1b
PB		 4409static CharDriverState *qmp_chardev_open_socket(const char *id,
4410 ChardevBackend *backend,
4411 ChardevReturn *ret,
f6bd5d6e
GH		 4412 Error **errp)
4413{
43ded1a0
CM		 4414 CharDriverState *chr;
4415 TCPCharDriver *s;
32bafa8f 4416 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4417 SocketAddress *addr = sock->addr;
4418 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4419 bool is_listen = sock->has_server ? sock->server : true;
4420 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4421 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4422 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4423 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4424 QIOChannelSocket *sioc = NULL;
43ded1a0 4425
d0d7708b
DB		 4426 chr = qemu_chr_alloc(common, errp);
4427 if (!chr) {
4428 return NULL;
4429 }
2d528d45 4430 s = g_new0(TCPCharDriver, 1);
43ded1a0 4431
130257dc 4432 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4433 s->is_listen = is_listen;
4434 s->is_telnet = is_telnet;
43ded1a0 4435 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4436 if (sock->tls_creds) {
4437 Object *creds;
4438 creds = object_resolve_path_component(
4439 object_get_objects_root(), sock->tls_creds);
4440 if (!creds) {
4441 error_setg(errp, "No TLS credentials with id '%s'",
4442 sock->tls_creds);
4443 goto error;
4444 }
4445 s->tls_creds = (QCryptoTLSCreds *)
4446 object_dynamic_cast(creds,
4447 TYPE_QCRYPTO_TLS_CREDS);
4448 if (!s->tls_creds) {
4449 error_setg(errp, "Object with id '%s' is not TLS credentials",
4450 sock->tls_creds);
4451 goto error;
4452 }
4453 object_ref(OBJECT(s->tls_creds));
4454 if (is_listen) {
4455 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4456 error_setg(errp, "%s",
4457 "Expected TLS credentials for server endpoint");
4458 goto error;
4459 }
4460 } else {
4461 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4462 error_setg(errp, "%s",
4463 "Expected TLS credentials for client endpoint");
4464 goto error;
4465 }
4466 }
4467 }
4468
37f9e0a2 4469 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0
CM		 4470
4471 chr->opaque = s;
d7a04fd7 4472 chr->chr_wait_connected = tcp_chr_wait_connected;
43ded1a0
CM		 4473 chr->chr_write = tcp_chr_write;
4474 chr->chr_sync_read = tcp_chr_sync_read;
4475 chr->chr_close = tcp_chr_close;
7d9d17f7 4476 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4477 chr->get_msgfds = tcp_get_msgfds;
4478 chr->set_msgfds = tcp_set_msgfds;
4479 chr->chr_add_client = tcp_chr_add_client;
4480 chr->chr_add_watch = tcp_chr_add_watch;
4481 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4482 /* be isn't opened until we get a connection */
4483 chr->explicit_be_open = true;
4484
0ff0fad2
DB		 4485 chr->filename = SocketAddress_to_str("disconnected:",
4486 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4487
4488 if (is_listen) {
43ded1a0
CM		 4489 if (is_telnet) {
4490 s->do_telnetopt = 1;
4491 }
5dd1f02b
CM		 4492 } else if (reconnect > 0) {
4493 s->reconnect_time = reconnect;
f6bd5d6e 4494 }
43ded1a0 4495
5008e5b7 4496 if (s->reconnect_time) {
d7a04fd7 4497 sioc = qio_channel_socket_new();
317856ca
DB		 4498 qio_channel_socket_connect_async(sioc, s->addr,
4499 qemu_chr_socket_connected,
4500 chr, NULL);
08b758b4 4501 } else {
d7a04fd7
MAL		 4502 if (s->is_listen) {
4503 sioc = qio_channel_socket_new();
4504 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4505 goto error;
4506 }
4507 s->listen_ioc = sioc;
4508 if (is_waitconnect &&
4509 qemu_chr_wait_connected(chr, errp) < 0) {
4510 goto error;
4511 }
4512 if (!s->ioc) {
4513 s->listen_tag = qio_channel_add_watch(
4514 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4515 tcp_chr_accept, chr, NULL);
4516 }
4517 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4518 goto error;
4519 }
43ded1a0
CM		 4520 }
4521
4522 return chr;
a8fb5427
DB		 4523
4524 error:
08b758b4
DB		 4525 if (sioc) {
4526 object_unref(OBJECT(sioc));
4527 }
a8fb5427
DB		 4528 if (s->tls_creds) {
4529 object_unref(OBJECT(s->tls_creds));
4530 }
4531 g_free(s);
4532 qemu_chr_free_common(chr);
4533 return NULL;
f6bd5d6e
GH		 4534}
4535
e79b80da
PB		 4536static CharDriverState *qmp_chardev_open_udp(const char *id,
4537 ChardevBackend *backend,
4538 ChardevReturn *ret,
08d0ab3f 4539 Error **errp)
3ecc059d 4540{
32bafa8f 4541 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4542 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4543 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4544
9894dc0c 4545 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4546 udp->local, udp->remote,
9894dc0c
DB		 4547 errp) < 0) {
4548 object_unref(OBJECT(sioc));
3ecc059d
GH		 4549 return NULL;
4550 }
9894dc0c 4551 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4552}
4553
f1a1a356
GH		 4554ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4555 Error **errp)
4556{
4557 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4558 CharDriverState *chr = NULL;
eaeba653 4559 Error *local_err = NULL;
4ca17281
PB		 4560 GSList *i;
4561 CharDriver *cd;
f1a1a356
GH		 4562
4563 chr = qemu_chr_find(id);
4564 if (chr) {
4565 error_setg(errp, "Chardev '%s' already exists", id);
4566 g_free(ret);
4567 return NULL;
4568 }
4569
4ca17281
PB		 4570 for (i = backends; i; i = i->next) {
4571 cd = i->data;
4572
130257dc 4573 if (cd->kind == backend->type) {
4ca17281
PB		 4574 chr = cd->create(id, backend, ret, &local_err);
4575 if (local_err) {
4576 error_propagate(errp, local_err);
4577 goto out_error;
4578 }
4579 break;
4580 }
4581 }
4582
4583 if (chr == NULL) {
1c3af0f4
PB		 4584 assert(!i);
4585 error_setg(errp, "chardev backend not available");
4586 goto out_error;
eaeba653
PB		 4587 }
4588
4589 chr->label = g_strdup(id);
4590 chr->avail_connections =
130257dc 4591 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4592 if (!chr->filename) {
130257dc 4593 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4594 }
eaeba653
PB		 4595 if (!chr->explicit_be_open) {
4596 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4597 }
4598 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4599 return ret;
4600
4601out_error:
4602 g_free(ret);
4603 return NULL;
f1a1a356
GH		 4604}
4605
4606void qmp_chardev_remove(const char *id, Error **errp)
4607{
4608 CharDriverState *chr;
4609
4610 chr = qemu_chr_find(id);
8108fd3e 4611 if (chr == NULL) {
f1a1a356
GH		 4612 error_setg(errp, "Chardev '%s' not found", id);
4613 return;
4614 }
4615 if (chr->chr_can_read || chr->chr_read ||
4616 chr->chr_event || chr->handler_opaque) {
4617 error_setg(errp, "Chardev '%s' is busy", id);
4618 return;
4619 }
33577b47
PD		 4620 if (chr->replay) {
4621 error_setg(errp,
4622 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4623 return;
4624 }
f1a1a356
GH		 4625 qemu_chr_delete(chr);
4626}
d654f34e 4627
aa5cb7f5 4628void qemu_chr_cleanup(void)
c1111a24
MAL		 4629{
4630 CharDriverState *chr, *tmp;
4631
4632 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4633 qemu_chr_delete(chr);
4634 }
4635}
4636
d654f34e
AL		 4637static void register_types(void)
4638{
4ca17281 4639 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4640 qemu_chr_open_null);
e4d50d47 4641 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4642 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4643 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4644 qmp_chardev_open_udp);
e4d50d47 4645 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4646 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4647 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4648 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4649 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4650 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4651#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4652 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4653 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4654 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4655 qemu_chr_parse_serial, qmp_chardev_open_serial);
4656#endif
38bfb1a6 4657#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4658 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4659 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4660 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4661 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4662#endif
c2e75a43 4663#ifdef HAVE_CHARDEV_PTY
4ca17281 4664 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4665 qemu_chr_open_pty);
4666#endif
122e5ed4 4667#ifdef _WIN32
4ca17281 4668 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4669 qemu_chr_open_win_con);
4670#endif
e4d50d47 4671 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4672 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4673 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4674 qemu_chr_open_mux);
c11ed966 4675 /* Bug-compatibility: */
e4d50d47 4676 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4677 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4678 /* this must be done after machine init, since we register FEs with muxes
4679 * as part of realize functions like serial_isa_realizefn when -nographic
4680 * is specified
4681 */
4682 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4683}
4684
4685type_init(register_types);
Mirror of https://git.qemu.org/git/qemu.git