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6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
83c9089e 26#include "monitor/monitor.h"
9c17d615 27#include "sysemu/sysemu.h"
d49b6836 28#include "qemu/error-report.h"
1de7afc9 29#include "qemu/timer.h"
dccfcd0e 30#include "sysemu/char.h"
cf3ebac7 31#include "hw/usb.h"
c5a415a0 32#include "qmp-commands.h"
cfb429cb
CM		 33#include "qapi/qmp-input-visitor.h"
34#include "qapi/qmp-output-visitor.h"
35#include "qapi-visit.h"
e9cf2fe0 36#include "qemu/base64.h"
9894dc0c
DB		 37#include "io/channel-socket.h"
38#include "io/channel-file.h"
a8fb5427 39#include "io/channel-tls.h"
33577b47 40#include "sysemu/replay.h"
6f97dba0 41
6f97dba0
AL		 42#include <zlib.h>
43
44#ifndef _WIN32
45#include <sys/times.h>
46#include <sys/wait.h>
47#include <termios.h>
48#include <sys/mman.h>
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
DB		 99 return g_strdup_printf("%s%s:%s:%s%s", prefix,
100 is_telnet ? "telnet" : "tcp", addr->u.inet->host,
101 addr->u.inet->port, is_listen ? ",server" : "");
16cc4ffe
CM		 102 break;
103 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2
DB		 104 return g_strdup_printf("%sunix:%s%s", prefix,
105 addr->u.q_unix->path,
106 is_listen ? ",server" : "");
16cc4ffe
CM		 107 break;
108 case SOCKET_ADDRESS_KIND_FD:
0ff0fad2
DB		 109 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd->str,
110 is_listen ? ",server" : "");
16cc4ffe
CM		 111 break;
112 default:
113 abort();
114 }
115}
116
0ff0fad2
DB		 117static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
118 struct sockaddr_storage *ps, socklen_t ps_len,
119 bool is_listen, bool is_telnet)
16cc4ffe 120{
01ca519f
CM		 121 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
122 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 123 const char *left = "", *right = "";
124
125 switch (ss->ss_family) {
126#ifndef _WIN32
127 case AF_UNIX:
0ff0fad2
DB		 128 return g_strdup_printf("unix:%s%s",
129 ((struct sockaddr_un *)(ss))->sun_path,
130 is_listen ? ",server" : "");
16cc4ffe
CM		 131#endif
132 case AF_INET6:
133 left = "[";
134 right = "]";
135 /* fall through */
136 case AF_INET:
01ca519f
CM		 137 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
138 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
139 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
140 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 141 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
142 is_telnet ? "telnet" : "tcp",
143 left, shost, right, sserv,
144 is_listen ? ",server" : "",
145 left, phost, right, pserv);
16cc4ffe
CM		 146
147 default:
0ff0fad2 148 return g_strdup_printf("unknown");
16cc4ffe
CM		 149 }
150}
151
6f97dba0
AL		 152/***********************************************************/
153/* character device */
154
72cf2d4f
BS		 155static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
156 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 157
d0d7708b
DB		 158static void qemu_chr_free_common(CharDriverState *chr);
159
160CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 161{
162 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 163 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 164
165 if (backend->has_logfile) {
166 int flags = O_WRONLY | O_CREAT;
167 if (backend->has_logappend &&
168 backend->logappend) {
169 flags |= O_APPEND;
170 } else {
171 flags |= O_TRUNC;
172 }
173 chr->logfd = qemu_open(backend->logfile, flags, 0666);
174 if (chr->logfd < 0) {
175 error_setg_errno(errp, errno,
176 "Unable to open logfile %s",
177 backend->logfile);
178 g_free(chr);
179 return NULL;
180 }
181 } else {
182 chr->logfd = -1;
183 }
184
db39fcf1
PB		 185 return chr;
186}
187
a425d23f 188void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 189{
73cdf3f2
AG		 190 /* Keep track if the char device is open */
191 switch (event) {
192 case CHR_EVENT_OPENED:
16665b94 193 s->be_open = 1;
73cdf3f2
AG		 194 break;
195 case CHR_EVENT_CLOSED:
16665b94 196 s->be_open = 0;
73cdf3f2
AG		 197 break;
198 }
199
6f97dba0
AL		 200 if (!s->chr_event)
201 return;
202 s->chr_event(s->handler_opaque, event);
203}
204
fee204fd 205void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 206{
bd5c51ee 207 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 208}
209
d0d7708b
DB		 210
211/* Not reporting errors from writing to logfile, as logs are
212 * defined to be "best effort" only */
213static void qemu_chr_fe_write_log(CharDriverState *s,
214 const uint8_t *buf, size_t len)
215{
216 size_t done = 0;
217 ssize_t ret;
218
219 if (s->logfd < 0) {
220 return;
221 }
222
223 while (done < len) {
224 do {
225 ret = write(s->logfd, buf + done, len - done);
226 if (ret == -1 && errno == EAGAIN) {
227 g_usleep(100);
228 }
229 } while (ret == -1 && errno == EAGAIN);
230
231 if (ret <= 0) {
232 return;
233 }
234 done += ret;
235 }
236}
237
33577b47
PD		 238static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
239{
240 int res = 0;
241 *offset = 0;
242
243 qemu_mutex_lock(&s->chr_write_lock);
244 while (*offset < len) {
245 do {
246 res = s->chr_write(s, buf + *offset, len - *offset);
247 if (res == -1 && errno == EAGAIN) {
248 g_usleep(100);
249 }
250 } while (res == -1 && errno == EAGAIN);
251
252 if (res <= 0) {
253 break;
254 }
255
256 *offset += res;
257 }
258 if (*offset > 0) {
259 qemu_chr_fe_write_log(s, buf, *offset);
260 }
261 qemu_mutex_unlock(&s->chr_write_lock);
262
263 return res;
264}
265
2cc6e0a1 266int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 267{
9005b2a7
PB		 268 int ret;
269
33577b47
PD		 270 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
271 int offset;
272 replay_char_write_event_load(&ret, &offset);
273 assert(offset <= len);
274 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
275 return ret;
276 }
277
9005b2a7
PB		 278 qemu_mutex_lock(&s->chr_write_lock);
279 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 280
281 if (ret > 0) {
282 qemu_chr_fe_write_log(s, buf, ret);
283 }
284
9005b2a7 285 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 286
287 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
288 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
289 }
290
9005b2a7 291 return ret;
6f97dba0
AL		 292}
293
cd18720a
AL		 294int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
295{
33577b47
PD		 296 int offset;
297 int res;
cd18720a 298
33577b47
PD		 299 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
300 replay_char_write_event_load(&res, &offset);
301 assert(offset <= len);
302 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
303 return res;
304 }
cd18720a 305
33577b47 306 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 307
33577b47
PD		 308 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
309 replay_char_write_event_save(res, offset);
cd18720a
AL		 310 }
311
9005b2a7
PB		 312 if (res < 0) {
313 return res;
314 }
cd18720a
AL		 315 return offset;
316}
317
7b0bfdf5
NN		 318int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
319{
320 int offset = 0, counter = 10;
321 int res;
322
323 if (!s->chr_sync_read) {
324 return 0;
325 }
33577b47
PD		 326
327 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
328 return replay_char_read_all_load(buf);
329 }
7b0bfdf5
NN		 330
331 while (offset < len) {
332 do {
333 res = s->chr_sync_read(s, buf + offset, len - offset);
334 if (res == -1 && errno == EAGAIN) {
335 g_usleep(100);
336 }
337 } while (res == -1 && errno == EAGAIN);
338
339 if (res == 0) {
340 break;
341 }
342
343 if (res < 0) {
33577b47
PD		 344 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
345 replay_char_read_all_save_error(res);
346 }
7b0bfdf5
NN		 347 return res;
348 }
349
350 offset += res;
351
352 if (!counter--) {
353 break;
354 }
355 }
356
33577b47
PD		 357 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
358 replay_char_read_all_save_buf(buf, offset);
359 }
7b0bfdf5
NN		 360 return offset;
361}
362
41084f1b 363int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0 364{
33577b47
PD		 365 int res;
366 if (!s->chr_ioctl || s->replay) {
367 res = -ENOTSUP;
368 } else {
369 res = s->chr_ioctl(s, cmd, arg);
370 }
371
372 return res;
6f97dba0
AL		 373}
374
909cda12 375int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 376{
377 if (!s->chr_can_read)
378 return 0;
379 return s->chr_can_read(s->handler_opaque);
380}
381
33577b47 382void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 383{
ac310734
SW		 384 if (s->chr_read) {
385 s->chr_read(s->handler_opaque, buf, len);
386 }
6f97dba0
AL		 387}
388
33577b47
PD		 389void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
390{
391 if (s->replay) {
392 if (replay_mode == REPLAY_MODE_PLAY) {
393 return;
394 }
395 replay_chr_be_write(s, buf, len);
396 } else {
397 qemu_chr_be_write_impl(s, buf, len);
398 }
399}
400
74c0d6f0 401int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 402{
c76bf6bb 403 int fd;
33577b47
PD		 404 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
405 if (s->replay) {
406 fprintf(stderr,
407 "Replay: get msgfd is not supported for serial devices yet\n");
408 exit(1);
409 }
410 return res;
c76bf6bb
NN		 411}
412
413int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
414{
415 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 416}
417
d39aac7a
NN		 418int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
419{
420 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
421}
422
13661089
DB		 423int qemu_chr_add_client(CharDriverState *s, int fd)
424{
425 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
426}
427
6f97dba0
AL		 428void qemu_chr_accept_input(CharDriverState *s)
429{
430 if (s->chr_accept_input)
431 s->chr_accept_input(s);
98c8ee1d 432 qemu_notify_event();
6f97dba0
AL		 433}
434
e7e71b0e 435void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 436{
9bd7854e 437 char buf[READ_BUF_LEN];
6f97dba0
AL		 438 va_list ap;
439 va_start(ap, fmt);
440 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 441 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 442 va_end(ap);
443}
444
386a5a1e
AS		 445static void remove_fd_in_watch(CharDriverState *chr);
446
6f97dba0 447void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 448 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 449 IOReadHandler *fd_read,
450 IOEventHandler *fd_event,
451 void *opaque)
452{
19083228
HG		 453 int fe_open;
454
da7d998b 455 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 456 fe_open = 0;
386a5a1e 457 remove_fd_in_watch(s);
19083228
HG		 458 } else {
459 fe_open = 1;
2d6c1ef4 460 }
6f97dba0
AL		 461 s->chr_can_read = fd_can_read;
462 s->chr_read = fd_read;
463 s->chr_event = fd_event;
464 s->handler_opaque = opaque;
ac1b84dd 465 if (fe_open && s->chr_update_read_handler)
6f97dba0 466 s->chr_update_read_handler(s);
73cdf3f2 467
19083228 468 if (!s->explicit_fe_open) {
8e25daa8 469 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 470 }
471
73cdf3f2
AG		 472 /* We're connecting to an already opened device, so let's make sure we
473 also get the open event */
a59bcd31 474 if (fe_open && s->be_open) {
fee204fd 475 qemu_chr_be_generic_open(s);
73cdf3f2 476 }
6f97dba0
AL		 477}
478
479static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
480{
481 return len;
482}
483
0d64992b
PB		 484static CharDriverState *qemu_chr_open_null(const char *id,
485 ChardevBackend *backend,
486 ChardevReturn *ret,
487 Error **errp)
6f97dba0
AL		 488{
489 CharDriverState *chr;
b1918fbb 490 ChardevCommon *common = backend->u.null;
6f97dba0 491
d0d7708b
DB		 492 chr = qemu_chr_alloc(common, errp);
493 if (!chr) {
494 return NULL;
495 }
6f97dba0 496 chr->chr_write = null_chr_write;
bd5c51ee 497 chr->explicit_be_open = true;
1f51470d 498 return chr;
6f97dba0
AL		 499}
500
501/* MUX driver for serial I/O splitting */
6f97dba0
AL		 502#define MAX_MUX 4
503#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
504#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
505typedef struct {
7b27a769 506 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 507 IOReadHandler *chr_read[MAX_MUX];
508 IOEventHandler *chr_event[MAX_MUX];
509 void *ext_opaque[MAX_MUX];
510 CharDriverState *drv;
799f1f23 511 int focus;
6f97dba0
AL		 512 int mux_cnt;
513 int term_got_escape;
514 int max_size;
a80bf99f
AL		 515 /* Intermediate input buffer allows to catch escape sequences even if the
516 currently active device is not accepting any input - but only until it
517 is full as well. */
518 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
519 int prod[MAX_MUX];
520 int cons[MAX_MUX];
2d22959d 521 int timestamps;
9005b2a7
PB		 522
523 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 524 int linestart;
2d22959d 525 int64_t timestamps_start;
6f97dba0
AL		 526} MuxDriver;
527
528
9005b2a7 529/* Called with chr_write_lock held. */
6f97dba0
AL		 530static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
531{
532 MuxDriver *d = chr->opaque;
533 int ret;
2d22959d 534 if (!d->timestamps) {
6975b713 535 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 536 } else {
537 int i;
538
539 ret = 0;
4ab312f7
JK		 540 for (i = 0; i < len; i++) {
541 if (d->linestart) {
6f97dba0
AL		 542 char buf1[64];
543 int64_t ti;
544 int secs;
545
bc72ad67 546 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 547 if (d->timestamps_start == -1)
548 d->timestamps_start = ti;
549 ti -= d->timestamps_start;
a4bb1db8 550 secs = ti / 1000;
6f97dba0
AL		 551 snprintf(buf1, sizeof(buf1),
552 "[%02d:%02d:%02d.%03d] ",
553 secs / 3600,
554 (secs / 60) % 60,
555 secs % 60,
a4bb1db8 556 (int)(ti % 1000));
6975b713 557 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 558 d->linestart = 0;
559 }
6975b713 560 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 561 if (buf[i] == '\n') {
562 d->linestart = 1;
6f97dba0
AL		 563 }
564 }
565 }
566 return ret;
567}
568
569static const char * const mux_help[] = {
570 "% h print this help\n\r",
571 "% x exit emulator\n\r",
572 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 573 "% t toggle console timestamps\n\r",
6f97dba0
AL		 574 "% b send break (magic sysrq)\n\r",
575 "% c switch between console and monitor\n\r",
576 "% % sends %\n\r",
577 NULL
578};
579
580int term_escape_char = 0x01; /* ctrl-a is used for escape */
581static void mux_print_help(CharDriverState *chr)
582{
583 int i, j;
584 char ebuf[15] = "Escape-Char";
585 char cbuf[50] = "\n\r";
586
587 if (term_escape_char > 0 && term_escape_char < 26) {
588 snprintf(cbuf, sizeof(cbuf), "\n\r");
589 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
590 } else {
591 snprintf(cbuf, sizeof(cbuf),
592 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
593 term_escape_char);
594 }
6975b713 595 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 596 for (i = 0; mux_help[i] != NULL; i++) {
597 for (j=0; mux_help[i][j] != '\0'; j++) {
598 if (mux_help[i][j] == '%')
6975b713 599 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 600 else
6975b713 601 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 602 }
603 }
604}
605
2724b180
AL		 606static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
607{
608 if (d->chr_event[mux_nr])
609 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
610}
611
6f97dba0
AL		 612static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
613{
614 if (d->term_got_escape) {
615 d->term_got_escape = 0;
616 if (ch == term_escape_char)
617 goto send_char;
618 switch(ch) {
619 case '?':
620 case 'h':
621 mux_print_help(chr);
622 break;
623 case 'x':
624 {
625 const char *term = "QEMU: Terminated\n\r";
6975b713 626 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 627 exit(0);
628 break;
629 }
630 case 's':
6ab4b5ab 631 bdrv_commit_all();
6f97dba0
AL		 632 break;
633 case 'b':
a425d23f 634 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 635 break;
636 case 'c':
637 /* Switch to the next registered device */
799f1f23
GH		 638 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
639 d->focus++;
640 if (d->focus >= d->mux_cnt)
641 d->focus = 0;
642 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 643 break;
2d22959d
JK		 644 case 't':
645 d->timestamps = !d->timestamps;
646 d->timestamps_start = -1;
4ab312f7 647 d->linestart = 0;
2d22959d 648 break;
6f97dba0
AL		 649 }
650 } else if (ch == term_escape_char) {
651 d->term_got_escape = 1;
652 } else {
653 send_char:
654 return 1;
655 }
656 return 0;
657}
658
659static void mux_chr_accept_input(CharDriverState *chr)
660{
6f97dba0 661 MuxDriver *d = chr->opaque;
799f1f23 662 int m = d->focus;
6f97dba0 663
a80bf99f 664 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 665 d->chr_can_read[m] &&
666 d->chr_can_read[m](d->ext_opaque[m])) {
667 d->chr_read[m](d->ext_opaque[m],
a80bf99f 668 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 669 }
670}
671
672static int mux_chr_can_read(void *opaque)
673{
674 CharDriverState *chr = opaque;
675 MuxDriver *d = chr->opaque;
799f1f23 676 int m = d->focus;
6f97dba0 677
a80bf99f 678 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 679 return 1;
a80bf99f
AL		 680 if (d->chr_can_read[m])
681 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 682 return 0;
683}
684
685static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
686{
687 CharDriverState *chr = opaque;
688 MuxDriver *d = chr->opaque;
799f1f23 689 int m = d->focus;
6f97dba0
AL		 690 int i;
691
692 mux_chr_accept_input (opaque);
693
694 for(i = 0; i < size; i++)
695 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 696 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 697 d->chr_can_read[m] &&
698 d->chr_can_read[m](d->ext_opaque[m]))
699 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
700 else
a80bf99f 701 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 702 }
703}
704
705static void mux_chr_event(void *opaque, int event)
706{
707 CharDriverState *chr = opaque;
708 MuxDriver *d = chr->opaque;
709 int i;
710
711 /* Send the event to all registered listeners */
712 for (i = 0; i < d->mux_cnt; i++)
2724b180 713 mux_chr_send_event(d, i, event);
6f97dba0
AL		 714}
715
716static void mux_chr_update_read_handler(CharDriverState *chr)
717{
718 MuxDriver *d = chr->opaque;
719
720 if (d->mux_cnt >= MAX_MUX) {
721 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
722 return;
723 }
724 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
725 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
726 d->chr_read[d->mux_cnt] = chr->chr_read;
727 d->chr_event[d->mux_cnt] = chr->chr_event;
728 /* Fix up the real driver with mux routines */
729 if (d->mux_cnt == 0) {
730 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
731 mux_chr_event, chr);
732 }
799f1f23
GH		 733 if (d->focus != -1) {
734 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 735 }
799f1f23 736 d->focus = d->mux_cnt;
6f97dba0 737 d->mux_cnt++;
799f1f23 738 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 739}
740
7b7ab18d
MR		 741static bool muxes_realized;
742
743/**
744 * Called after processing of default and command-line-specified
745 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
746 * to a mux chardev. This is done here to ensure that
747 * output/prompts/banners are only displayed for the FE that has
748 * focus when initial command-line processing/machine init is
749 * completed.
750 *
751 * After this point, any new FE attached to any new or existing
752 * mux will receive CHR_EVENT_OPENED notifications for the BE
753 * immediately.
754 */
755static void muxes_realize_done(Notifier *notifier, void *unused)
756{
757 CharDriverState *chr;
758
759 QTAILQ_FOREACH(chr, &chardevs, next) {
760 if (chr->is_mux) {
761 MuxDriver *d = chr->opaque;
762 int i;
763
764 /* send OPENED to all already-attached FEs */
765 for (i = 0; i < d->mux_cnt; i++) {
766 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
767 }
768 /* mark mux as OPENED so any new FEs will immediately receive
769 * OPENED event
770 */
771 qemu_chr_be_generic_open(chr);
772 }
773 }
774 muxes_realized = true;
775}
776
777static Notifier muxes_realize_notify = {
778 .notify = muxes_realize_done,
779};
780
3f0838ab
KB		 781static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
782{
783 MuxDriver *d = s->opaque;
784 return d->drv->chr_add_watch(d->drv, cond);
785}
786
3c0e5a4a
PB		 787static CharDriverState *qemu_chr_open_mux(const char *id,
788 ChardevBackend *backend,
789 ChardevReturn *ret, Error **errp)
6f97dba0 790{
130257dc 791 ChardevMux *mux = backend->u.mux;
3c0e5a4a 792 CharDriverState *chr, *drv;
6f97dba0 793 MuxDriver *d;
f194a1ae 794 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 795
3c0e5a4a
PB		 796 drv = qemu_chr_find(mux->chardev);
797 if (drv == NULL) {
798 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
799 return NULL;
800 }
801
d0d7708b
DB		 802 chr = qemu_chr_alloc(common, errp);
803 if (!chr) {
804 return NULL;
805 }
2d528d45 806 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 807
808 chr->opaque = d;
809 d->drv = drv;
799f1f23 810 d->focus = -1;
6f97dba0
AL		 811 chr->chr_write = mux_chr_write;
812 chr->chr_update_read_handler = mux_chr_update_read_handler;
813 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 814 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 815 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 816 if (drv->chr_add_watch) {
817 chr->chr_add_watch = mux_chr_add_watch;
818 }
7b7ab18d
MR		 819 /* only default to opened state if we've realized the initial
820 * set of muxes
821 */
822 chr->explicit_be_open = muxes_realized ? 0 : 1;
823 chr->is_mux = 1;
73cdf3f2 824
6f97dba0
AL		 825 return chr;
826}
827
828
96c63847
AL		 829typedef struct IOWatchPoll
830{
d185c094
PB		 831 GSource parent;
832
9894dc0c 833 QIOChannel *ioc;
96c63847 834 GSource *src;
96c63847
AL		 835
836 IOCanReadHandler *fd_can_read;
1e885b25 837 GSourceFunc fd_read;
96c63847 838 void *opaque;
96c63847
AL		 839} IOWatchPoll;
840
96c63847
AL		 841static IOWatchPoll *io_watch_poll_from_source(GSource *source)
842{
d185c094 843 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 844}
845
846static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
847{
848 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 849 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 850 bool was_active = iwp->src != NULL;
d185c094 851 if (was_active == now_active) {
96c63847
AL		 852 return FALSE;
853 }
854
d185c094 855 if (now_active) {
9894dc0c
DB		 856 iwp->src = qio_channel_create_watch(
857 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 858 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 859 g_source_attach(iwp->src, NULL);
860 } else {
1e885b25
PB		 861 g_source_destroy(iwp->src);
862 g_source_unref(iwp->src);
863 iwp->src = NULL;
d185c094
PB		 864 }
865 return FALSE;
96c63847
AL		 866}
867
868static gboolean io_watch_poll_check(GSource *source)
869{
d185c094 870 return FALSE;
96c63847
AL		 871}
872
873static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
874 gpointer user_data)
875{
d185c094 876 abort();
96c63847
AL		 877}
878
879static void io_watch_poll_finalize(GSource *source)
880{
2b316774
PB		 881 /* Due to a glib bug, removing the last reference to a source
882 * inside a finalize callback causes recursive locking (and a
883 * deadlock). This is not a problem inside other callbacks,
884 * including dispatch callbacks, so we call io_remove_watch_poll
885 * to remove this source. At this point, iwp->src must
886 * be NULL, or we would leak it.
887 *
888 * This would be solved much more elegantly by child sources,
889 * but we support older glib versions that do not have them.
890 */
96c63847 891 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 892 assert(iwp->src == NULL);
96c63847
AL		 893}
894
895static GSourceFuncs io_watch_poll_funcs = {
896 .prepare = io_watch_poll_prepare,
897 .check = io_watch_poll_check,
898 .dispatch = io_watch_poll_dispatch,
899 .finalize = io_watch_poll_finalize,
900};
901
902/* Can only be used for read */
9894dc0c 903static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 904 IOCanReadHandler *fd_can_read,
9894dc0c 905 QIOChannelFunc fd_read,
96c63847
AL		 906 gpointer user_data)
907{
908 IOWatchPoll *iwp;
0ca5aa4f 909 int tag;
96c63847 910
d185c094 911 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 912 iwp->fd_can_read = fd_can_read;
913 iwp->opaque = user_data;
9894dc0c 914 iwp->ioc = ioc;
1e885b25
PB		 915 iwp->fd_read = (GSourceFunc) fd_read;
916 iwp->src = NULL;
96c63847 917
0ca5aa4f
PB		 918 tag = g_source_attach(&iwp->parent, NULL);
919 g_source_unref(&iwp->parent);
920 return tag;
96c63847
AL		 921}
922
2b316774
PB		 923static void io_remove_watch_poll(guint tag)
924{
925 GSource *source;
926 IOWatchPoll *iwp;
927
928 g_return_if_fail (tag > 0);
929
930 source = g_main_context_find_source_by_id(NULL, tag);
931 g_return_if_fail (source != NULL);
932
933 iwp = io_watch_poll_from_source(source);
934 if (iwp->src) {
935 g_source_destroy(iwp->src);
936 g_source_unref(iwp->src);
937 iwp->src = NULL;
938 }
939 g_source_destroy(&iwp->parent);
940}
941
26da70c7
AS		 942static void remove_fd_in_watch(CharDriverState *chr)
943{
944 if (chr->fd_in_tag) {
945 io_remove_watch_poll(chr->fd_in_tag);
946 chr->fd_in_tag = 0;
947 }
948}
949
96c63847 950
9894dc0c
DB		 951static int io_channel_send_full(QIOChannel *ioc,
952 const void *buf, size_t len,
953 int *fds, size_t nfds)
76a9644b 954{
9894dc0c 955 size_t offset = 0;
76a9644b 956
9894dc0c
DB		 957 while (offset < len) {
958 ssize_t ret = 0;
959 struct iovec iov = { .iov_base = (char *)buf + offset,
960 .iov_len = len - offset };
961
962 ret = qio_channel_writev_full(
963 ioc, &iov, 1,
964 fds, nfds, NULL);
965 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 966 if (offset) {
967 return offset;
968 }
76a9644b 969
e046fb44
DB		 970 errno = EAGAIN;
971 return -1;
972 } else if (ret < 0) {
9894dc0c
DB		 973 errno = EINVAL;
974 return -1;
975 }
76a9644b 976
9894dc0c
DB		 977 offset += ret;
978 }
76a9644b 979
9894dc0c 980 return offset;
76a9644b
AL		 981}
982
9894dc0c 983
0ff0fad2 984#ifndef _WIN32
9894dc0c 985static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 986{
9894dc0c 987 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 988}
96c63847 989
44ab9ed4 990
a29753f8
AL		 991typedef struct FDCharDriver {
992 CharDriverState *chr;
9894dc0c 993 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 994 int max_size;
995} FDCharDriver;
996
9005b2a7 997/* Called with chr_write_lock held. */
6f97dba0
AL		 998static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
999{
1000 FDCharDriver *s = chr->opaque;
a29753f8 1001
9894dc0c 1002 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1003}
1004
9894dc0c 1005static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1006{
1007 CharDriverState *chr = opaque;
1008 FDCharDriver *s = chr->opaque;
a29753f8 1009 int len;
9bd7854e 1010 uint8_t buf[READ_BUF_LEN];
9894dc0c 1011 ssize_t ret;
6f97dba0
AL		 1012
1013 len = sizeof(buf);
a29753f8 1014 if (len > s->max_size) {
6f97dba0 1015 len = s->max_size;
a29753f8
AL		 1016 }
1017 if (len == 0) {
cdbf6e16 1018 return TRUE;
a29753f8
AL		 1019 }
1020
9894dc0c
DB		 1021 ret = qio_channel_read(
1022 chan, (gchar *)buf, len, NULL);
1023 if (ret == 0) {
26da70c7 1024 remove_fd_in_watch(chr);
a425d23f 1025 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1026 return FALSE;
6f97dba0 1027 }
9894dc0c
DB		 1028 if (ret > 0) {
1029 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1030 }
a29753f8
AL		 1031
1032 return TRUE;
1033}
1034
1035static int fd_chr_read_poll(void *opaque)
1036{
1037 CharDriverState *chr = opaque;
1038 FDCharDriver *s = chr->opaque;
1039
1040 s->max_size = qemu_chr_be_can_write(chr);
1041 return s->max_size;
6f97dba0
AL		 1042}
1043
23673ca7
AL		 1044static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1045{
1046 FDCharDriver *s = chr->opaque;
9894dc0c 1047 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1048}
1049
6f97dba0
AL		 1050static void fd_chr_update_read_handler(CharDriverState *chr)
1051{
1052 FDCharDriver *s = chr->opaque;
1053
26da70c7 1054 remove_fd_in_watch(chr);
9894dc0c
DB		 1055 if (s->ioc_in) {
1056 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1057 fd_chr_read_poll,
7ba9addc 1058 fd_chr_read, chr);
6f97dba0
AL		 1059 }
1060}
1061
1062static void fd_chr_close(struct CharDriverState *chr)
1063{
1064 FDCharDriver *s = chr->opaque;
1065
26da70c7 1066 remove_fd_in_watch(chr);
9894dc0c
DB		 1067 if (s->ioc_in) {
1068 object_unref(OBJECT(s->ioc_in));
a29753f8 1069 }
9894dc0c
DB		 1070 if (s->ioc_out) {
1071 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1072 }
1073
7267c094 1074 g_free(s);
a425d23f 1075 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1076}
1077
1078/* open a character device to a unix fd */
d0d7708b
DB		 1079static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1080 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1081{
1082 CharDriverState *chr;
1083 FDCharDriver *s;
1084
d0d7708b
DB		 1085 chr = qemu_chr_alloc(backend, errp);
1086 if (!chr) {
1087 return NULL;
1088 }
2d528d45 1089 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1090 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1091 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1092 qemu_set_nonblock(fd_out);
a29753f8 1093 s->chr = chr;
6f97dba0 1094 chr->opaque = s;
23673ca7 1095 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1096 chr->chr_write = fd_chr_write;
1097 chr->chr_update_read_handler = fd_chr_update_read_handler;
1098 chr->chr_close = fd_chr_close;
1099
6f97dba0
AL		 1100 return chr;
1101}
1102
20cbe7a2
PB		 1103static CharDriverState *qemu_chr_open_pipe(const char *id,
1104 ChardevBackend *backend,
1105 ChardevReturn *ret,
1106 Error **errp)
6f97dba0 1107{
130257dc 1108 ChardevHostdev *opts = backend->u.pipe;
6f97dba0 1109 int fd_in, fd_out;
0ff0fad2
DB		 1110 char *filename_in;
1111 char *filename_out;
548cbb36 1112 const char *filename = opts->device;
f194a1ae 1113 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1114
0ff0fad2
DB		 1115
1116 filename_in = g_strdup_printf("%s.in", filename);
1117 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1118 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1119 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1120 g_free(filename_in);
1121 g_free(filename_out);
6f97dba0
AL		 1122 if (fd_in < 0 || fd_out < 0) {
1123 if (fd_in >= 0)
1124 close(fd_in);
1125 if (fd_out >= 0)
1126 close(fd_out);
b181e047 1127 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1128 if (fd_in < 0) {
20cbe7a2 1129 error_setg_file_open(errp, errno, filename);
1f51470d 1130 return NULL;
a89dd6c3 1131 }
6f97dba0 1132 }
d0d7708b 1133 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1134}
1135
6f97dba0
AL		 1136/* init terminal so that we can grab keys */
1137static struct termios oldtty;
1138static int old_fd0_flags;
c88930a6 1139static bool stdio_in_use;
bb002513 1140static bool stdio_allow_signal;
e76d4420
GH		 1141static bool stdio_echo_state;
1142
1143static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1144
1145static void term_exit(void)
1146{
1147 tcsetattr (0, TCSANOW, &oldtty);
1148 fcntl(0, F_SETFL, old_fd0_flags);
1149}
1150
e76d4420
GH		 1151static void term_stdio_handler(int sig)
1152{
1153 /* restore echo after resume from suspend. */
1154 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1155}
1156
bb002513 1157static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1158{
1159 struct termios tty;
1160
e76d4420 1161 stdio_echo_state = echo;
0369364b 1162 tty = oldtty;
bb002513
PB		 1163 if (!echo) {
1164 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1165 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1166 tty.c_oflag |= OPOST;
1167 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1168 tty.c_cflag &= ~(CSIZE|PARENB);
1169 tty.c_cflag |= CS8;
1170 tty.c_cc[VMIN] = 1;
1171 tty.c_cc[VTIME] = 0;
1172 }
bb002513 1173 if (!stdio_allow_signal)
6f97dba0 1174 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1175
1176 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1177}
1178
1179static void qemu_chr_close_stdio(struct CharDriverState *chr)
1180{
1181 term_exit();
6f97dba0
AL		 1182 fd_chr_close(chr);
1183}
1184
8c84b25d
PB		 1185static CharDriverState *qemu_chr_open_stdio(const char *id,
1186 ChardevBackend *backend,
1187 ChardevReturn *ret,
1188 Error **errp)
6f97dba0 1189{
130257dc 1190 ChardevStdio *opts = backend->u.stdio;
6f97dba0 1191 CharDriverState *chr;
e76d4420 1192 struct sigaction act;
f194a1ae 1193 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1194
ab51b1d5 1195 if (is_daemonized()) {
8c84b25d 1196 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1197 return NULL;
1198 }
c88930a6
LL		 1199
1200 if (stdio_in_use) {
8c84b25d
PB		 1201 error_setg(errp, "cannot use stdio by multiple character devices");
1202 return NULL;
c88930a6
LL		 1203 }
1204
1205 stdio_in_use = true;
ed7a1540 1206 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1207 tcgetattr(0, &oldtty);
4ff12bdb 1208 qemu_set_nonblock(0);
ed7a1540 1209 atexit(term_exit);
0369364b 1210
e76d4420
GH		 1211 memset(&act, 0, sizeof(act));
1212 act.sa_handler = term_stdio_handler;
1213 sigaction(SIGCONT, &act, NULL);
1214
d0d7708b 1215 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1216 chr->chr_close = qemu_chr_close_stdio;
bb002513 1217 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1218 if (opts->has_signal) {
1219 stdio_allow_signal = opts->signal;
1220 }
15f31519 1221 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1222
1f51470d 1223 return chr;
6f97dba0
AL		 1224}
1225
6f97dba0 1226#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1227 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1228 || defined(__GLIBC__)
6f97dba0 1229
d809ab95
PB		 1230#define HAVE_CHARDEV_SERIAL 1
1231#define HAVE_CHARDEV_PTY 1
e551498e 1232
6f97dba0 1233typedef struct {
9894dc0c 1234 QIOChannel *ioc;
6f97dba0 1235 int read_bytes;
9005b2a7
PB		 1236
1237 /* Protected by the CharDriverState chr_write_lock. */
1238 int connected;
8aa33caf 1239 guint timer_tag;
7b3621f4 1240 guint open_tag;
6f97dba0
AL		 1241} PtyCharDriver;
1242
9005b2a7 1243static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1244static void pty_chr_state(CharDriverState *chr, int connected);
1245
8aa33caf
AL		 1246static gboolean pty_chr_timer(gpointer opaque)
1247{
1248 struct CharDriverState *chr = opaque;
1249 PtyCharDriver *s = chr->opaque;
1250
9005b2a7 1251 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1252 s->timer_tag = 0;
7b3621f4 1253 s->open_tag = 0;
b0d768c3
GH		 1254 if (!s->connected) {
1255 /* Next poll ... */
9005b2a7 1256 pty_chr_update_read_handler_locked(chr);
b0d768c3 1257 }
9005b2a7 1258 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1259 return FALSE;
1260}
1261
9005b2a7 1262/* Called with chr_write_lock held. */
8aa33caf
AL		 1263static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1264{
1265 PtyCharDriver *s = chr->opaque;
1266
1267 if (s->timer_tag) {
1268 g_source_remove(s->timer_tag);
1269 s->timer_tag = 0;
1270 }
1271
1272 if (ms == 1000) {
1273 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1274 } else {
1275 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1276 }
1277}
1278
9005b2a7
PB		 1279/* Called with chr_write_lock held. */
1280static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1281{
1282 PtyCharDriver *s = chr->opaque;
1283 GPollFD pfd;
c1f24489 1284 int rc;
9894dc0c 1285 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1286
9894dc0c 1287 pfd.fd = fioc->fd;
1bb7fe72
PB		 1288 pfd.events = G_IO_OUT;
1289 pfd.revents = 0;
c1f24489
PB		 1290 do {
1291 rc = g_poll(&pfd, 1, 0);
1292 } while (rc == -1 && errno == EINTR);
1293 assert(rc >= 0);
1294
1bb7fe72
PB		 1295 if (pfd.revents & G_IO_HUP) {
1296 pty_chr_state(chr, 0);
1297 } else {
1298 pty_chr_state(chr, 1);
1299 }
1300}
1301
9005b2a7
PB		 1302static void pty_chr_update_read_handler(CharDriverState *chr)
1303{
1304 qemu_mutex_lock(&chr->chr_write_lock);
1305 pty_chr_update_read_handler_locked(chr);
1306 qemu_mutex_unlock(&chr->chr_write_lock);
1307}
1308
1309/* Called with chr_write_lock held. */
6f97dba0
AL		 1310static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1311{
1312 PtyCharDriver *s = chr->opaque;
1313
1314 if (!s->connected) {
1315 /* guest sends data, check for (re-)connect */
9005b2a7 1316 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1317 if (!s->connected) {
1318 return 0;
1319 }
6f97dba0 1320 }
9894dc0c 1321 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1322}
1323
e6a87ed8
AL		 1324static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1325{
1326 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1327 if (!s->connected) {
1328 return NULL;
1329 }
9894dc0c 1330 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1331}
1332
6f97dba0
AL		 1333static int pty_chr_read_poll(void *opaque)
1334{
1335 CharDriverState *chr = opaque;
1336 PtyCharDriver *s = chr->opaque;
1337
909cda12 1338 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1339 return s->read_bytes;
1340}
1341
9894dc0c 1342static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1343{
1344 CharDriverState *chr = opaque;
1345 PtyCharDriver *s = chr->opaque;
9894dc0c 1346 gsize len;
9bd7854e 1347 uint8_t buf[READ_BUF_LEN];
9894dc0c 1348 ssize_t ret;
6f97dba0
AL		 1349
1350 len = sizeof(buf);
1351 if (len > s->read_bytes)
1352 len = s->read_bytes;
cdbf6e16
PB		 1353 if (len == 0) {
1354 return TRUE;
1355 }
9894dc0c
DB		 1356 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1357 if (ret <= 0) {
6f97dba0 1358 pty_chr_state(chr, 0);
093d3a20
AL		 1359 return FALSE;
1360 } else {
6f97dba0 1361 pty_chr_state(chr, 1);
9894dc0c 1362 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1363 }
093d3a20 1364 return TRUE;
6f97dba0
AL		 1365}
1366
7b3621f4
PB		 1367static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1368{
1369 CharDriverState *chr = opaque;
1370 PtyCharDriver *s = chr->opaque;
1371
1372 s->open_tag = 0;
1373 qemu_chr_be_generic_open(chr);
1374 return FALSE;
1375}
1376
9005b2a7 1377/* Called with chr_write_lock held. */
6f97dba0
AL		 1378static void pty_chr_state(CharDriverState *chr, int connected)
1379{
1380 PtyCharDriver *s = chr->opaque;
1381
1382 if (!connected) {
7b3621f4
PB		 1383 if (s->open_tag) {
1384 g_source_remove(s->open_tag);
1385 s->open_tag = 0;
1386 }
26da70c7 1387 remove_fd_in_watch(chr);
6f97dba0 1388 s->connected = 0;
6f97dba0
AL		 1389 /* (re-)connect poll interval for idle guests: once per second.
1390 * We check more frequently in case the guests sends data to
1391 * the virtual device linked to our pty. */
8aa33caf 1392 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1393 } else {
85a67692
PB		 1394 if (s->timer_tag) {
1395 g_source_remove(s->timer_tag);
1396 s->timer_tag = 0;
1397 }
1398 if (!s->connected) {
7b3621f4 1399 g_assert(s->open_tag == 0);
85a67692 1400 s->connected = 1;
7b3621f4 1401 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1402 }
1403 if (!chr->fd_in_tag) {
9894dc0c
DB		 1404 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1405 pty_chr_read_poll,
7ba9addc 1406 pty_chr_read, chr);
85a67692 1407 }
6f97dba0
AL		 1408 }
1409}
1410
6f97dba0
AL		 1411static void pty_chr_close(struct CharDriverState *chr)
1412{
1413 PtyCharDriver *s = chr->opaque;
1414
7b3621f4
PB		 1415 qemu_mutex_lock(&chr->chr_write_lock);
1416 pty_chr_state(chr, 0);
9894dc0c 1417 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1418 if (s->timer_tag) {
1419 g_source_remove(s->timer_tag);
910b6368 1420 s->timer_tag = 0;
8aa33caf 1421 }
7b3621f4 1422 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1423 g_free(s);
a425d23f 1424 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1425}
1426
e68c5958 1427static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1428 ChardevBackend *backend,
1429 ChardevReturn *ret,
1430 Error **errp)
6f97dba0
AL		 1431{
1432 CharDriverState *chr;
1433 PtyCharDriver *s;
e68c5958 1434 int master_fd, slave_fd;
6f97dba0 1435 char pty_name[PATH_MAX];
b1918fbb 1436 ChardevCommon *common = backend->u.pty;
6f97dba0 1437
4efeabbb
MT		 1438 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1439 if (master_fd < 0) {
c2e75a43 1440 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1441 return NULL;
6f97dba0
AL		 1442 }
1443
837a183f 1444 close(slave_fd);
fac6688a 1445 qemu_set_nonblock(master_fd);
6f97dba0 1446
d0d7708b
DB		 1447 chr = qemu_chr_alloc(common, errp);
1448 if (!chr) {
1449 close(master_fd);
1450 return NULL;
1451 }
a4e26048 1452
4efeabbb
MT		 1453 chr->filename = g_strdup_printf("pty:%s", pty_name);
1454 ret->pty = g_strdup(pty_name);
e68c5958 1455 ret->has_pty = true;
58650218 1456
e68c5958 1457 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1458 pty_name, id);
6f97dba0 1459
2d528d45 1460 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1461 chr->opaque = s;
1462 chr->chr_write = pty_chr_write;
1463 chr->chr_update_read_handler = pty_chr_update_read_handler;
1464 chr->chr_close = pty_chr_close;
e6a87ed8 1465 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1466 chr->explicit_be_open = true;
6f97dba0 1467
9894dc0c 1468 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1469 s->timer_tag = 0;
6f97dba0 1470
1f51470d 1471 return chr;
6f97dba0
AL		 1472}
1473
1474static void tty_serial_init(int fd, int speed,
1475 int parity, int data_bits, int stop_bits)
1476{
1477 struct termios tty;
1478 speed_t spd;
1479
1480#if 0
1481 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1482 speed, parity, data_bits, stop_bits);
1483#endif
1484 tcgetattr (fd, &tty);
1485
45eea13b
SW		 1486#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1487 speed = speed * 10 / 11;
1488 do {
1489 check_speed(50);
1490 check_speed(75);
1491 check_speed(110);
1492 check_speed(134);
1493 check_speed(150);
1494 check_speed(200);
1495 check_speed(300);
1496 check_speed(600);
1497 check_speed(1200);
1498 check_speed(1800);
1499 check_speed(2400);
1500 check_speed(4800);
1501 check_speed(9600);
1502 check_speed(19200);
1503 check_speed(38400);
1504 /* Non-Posix values follow. They may be unsupported on some systems. */
1505 check_speed(57600);
1506 check_speed(115200);
1507#ifdef B230400
1508 check_speed(230400);
1509#endif
1510#ifdef B460800
1511 check_speed(460800);
1512#endif
1513#ifdef B500000
1514 check_speed(500000);
1515#endif
1516#ifdef B576000
1517 check_speed(576000);
1518#endif
1519#ifdef B921600
1520 check_speed(921600);
1521#endif
1522#ifdef B1000000
1523 check_speed(1000000);
1524#endif
1525#ifdef B1152000
1526 check_speed(1152000);
1527#endif
1528#ifdef B1500000
1529 check_speed(1500000);
1530#endif
1531#ifdef B2000000
1532 check_speed(2000000);
1533#endif
1534#ifdef B2500000
1535 check_speed(2500000);
1536#endif
1537#ifdef B3000000
1538 check_speed(3000000);
1539#endif
1540#ifdef B3500000
1541 check_speed(3500000);
1542#endif
1543#ifdef B4000000
1544 check_speed(4000000);
1545#endif
6f97dba0 1546 spd = B115200;
45eea13b 1547 } while (0);
6f97dba0
AL		 1548
1549 cfsetispeed(&tty, spd);
1550 cfsetospeed(&tty, spd);
1551
1552 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1553 |INLCR|IGNCR|ICRNL|IXON);
1554 tty.c_oflag |= OPOST;
1555 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1556 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1557 switch(data_bits) {
1558 default:
1559 case 8:
1560 tty.c_cflag |= CS8;
1561 break;
1562 case 7:
1563 tty.c_cflag |= CS7;
1564 break;
1565 case 6:
1566 tty.c_cflag |= CS6;
1567 break;
1568 case 5:
1569 tty.c_cflag |= CS5;
1570 break;
1571 }
1572 switch(parity) {
1573 default:
1574 case 'N':
1575 break;
1576 case 'E':
1577 tty.c_cflag |= PARENB;
1578 break;
1579 case 'O':
1580 tty.c_cflag |= PARENB | PARODD;
1581 break;
1582 }
1583 if (stop_bits == 2)
1584 tty.c_cflag |= CSTOPB;
1585
1586 tcsetattr (fd, TCSANOW, &tty);
1587}
1588
1589static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1590{
1591 FDCharDriver *s = chr->opaque;
9894dc0c 1592 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1593
1594 switch(cmd) {
1595 case CHR_IOCTL_SERIAL_SET_PARAMS:
1596 {
1597 QEMUSerialSetParams *ssp = arg;
9894dc0c 1598 tty_serial_init(fioc->fd,
a29753f8 1599 ssp->speed, ssp->parity,
6f97dba0
AL		 1600 ssp->data_bits, ssp->stop_bits);
1601 }
1602 break;
1603 case CHR_IOCTL_SERIAL_SET_BREAK:
1604 {
1605 int enable = *(int *)arg;
a29753f8 1606 if (enable) {
9894dc0c 1607 tcsendbreak(fioc->fd, 1);
a29753f8 1608 }
6f97dba0
AL		 1609 }
1610 break;
1611 case CHR_IOCTL_SERIAL_GET_TIOCM:
1612 {
1613 int sarg = 0;
1614 int *targ = (int *)arg;
9894dc0c 1615 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1616 *targ = 0;
b4abdfa4 1617 if (sarg & TIOCM_CTS)
6f97dba0 1618 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1619 if (sarg & TIOCM_CAR)
6f97dba0 1620 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1621 if (sarg & TIOCM_DSR)
6f97dba0 1622 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1623 if (sarg & TIOCM_RI)
6f97dba0 1624 *targ |= CHR_TIOCM_RI;
b4abdfa4 1625 if (sarg & TIOCM_DTR)
6f97dba0 1626 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1627 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1628 *targ |= CHR_TIOCM_RTS;
1629 }
1630 break;
1631 case CHR_IOCTL_SERIAL_SET_TIOCM:
1632 {
1633 int sarg = *(int *)arg;
1634 int targ = 0;
9894dc0c 1635 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1636 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1637 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1638 if (sarg & CHR_TIOCM_CTS)
1639 targ |= TIOCM_CTS;
1640 if (sarg & CHR_TIOCM_CAR)
1641 targ |= TIOCM_CAR;
1642 if (sarg & CHR_TIOCM_DSR)
1643 targ |= TIOCM_DSR;
1644 if (sarg & CHR_TIOCM_RI)
1645 targ |= TIOCM_RI;
1646 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1647 targ |= TIOCM_DTR;
b4abdfa4 1648 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1649 targ |= TIOCM_RTS;
9894dc0c 1650 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1651 }
1652 break;
1653 default:
1654 return -ENOTSUP;
1655 }
1656 return 0;
1657}
1658
4266a134
DA		 1659static void qemu_chr_close_tty(CharDriverState *chr)
1660{
4266a134 1661 fd_chr_close(chr);
4266a134
DA		 1662}
1663
d0d7708b
DB		 1664static CharDriverState *qemu_chr_open_tty_fd(int fd,
1665 ChardevCommon *backend,
1666 Error **errp)
d59044ef
GH		 1667{
1668 CharDriverState *chr;
1669
1670 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1671 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1672 chr->chr_ioctl = tty_serial_ioctl;
1673 chr->chr_close = qemu_chr_close_tty;
1674 return chr;
1675}
6f97dba0
AL		 1676#endif /* __linux__ || __sun__ */
1677
1678#if defined(__linux__)
e551498e
GH		 1679
1680#define HAVE_CHARDEV_PARPORT 1
1681
6f97dba0
AL		 1682typedef struct {
1683 int fd;
1684 int mode;
1685} ParallelCharDriver;
1686
1687static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1688{
1689 if (s->mode != mode) {
1690 int m = mode;
1691 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1692 return 0;
1693 s->mode = mode;
1694 }
1695 return 1;
1696}
1697
1698static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1699{
1700 ParallelCharDriver *drv = chr->opaque;
1701 int fd = drv->fd;
1702 uint8_t b;
1703
1704 switch(cmd) {
1705 case CHR_IOCTL_PP_READ_DATA:
1706 if (ioctl(fd, PPRDATA, &b) < 0)
1707 return -ENOTSUP;
1708 *(uint8_t *)arg = b;
1709 break;
1710 case CHR_IOCTL_PP_WRITE_DATA:
1711 b = *(uint8_t *)arg;
1712 if (ioctl(fd, PPWDATA, &b) < 0)
1713 return -ENOTSUP;
1714 break;
1715 case CHR_IOCTL_PP_READ_CONTROL:
1716 if (ioctl(fd, PPRCONTROL, &b) < 0)
1717 return -ENOTSUP;
1718 /* Linux gives only the lowest bits, and no way to know data
1719 direction! For better compatibility set the fixed upper
1720 bits. */
1721 *(uint8_t *)arg = b | 0xc0;
1722 break;
1723 case CHR_IOCTL_PP_WRITE_CONTROL:
1724 b = *(uint8_t *)arg;
1725 if (ioctl(fd, PPWCONTROL, &b) < 0)
1726 return -ENOTSUP;
1727 break;
1728 case CHR_IOCTL_PP_READ_STATUS:
1729 if (ioctl(fd, PPRSTATUS, &b) < 0)
1730 return -ENOTSUP;
1731 *(uint8_t *)arg = b;
1732 break;
1733 case CHR_IOCTL_PP_DATA_DIR:
1734 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1735 return -ENOTSUP;
1736 break;
1737 case CHR_IOCTL_PP_EPP_READ_ADDR:
1738 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1739 struct ParallelIOArg *parg = arg;
1740 int n = read(fd, parg->buffer, parg->count);
1741 if (n != parg->count) {
1742 return -EIO;
1743 }
1744 }
1745 break;
1746 case CHR_IOCTL_PP_EPP_READ:
1747 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1748 struct ParallelIOArg *parg = arg;
1749 int n = read(fd, parg->buffer, parg->count);
1750 if (n != parg->count) {
1751 return -EIO;
1752 }
1753 }
1754 break;
1755 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1756 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1757 struct ParallelIOArg *parg = arg;
1758 int n = write(fd, parg->buffer, parg->count);
1759 if (n != parg->count) {
1760 return -EIO;
1761 }
1762 }
1763 break;
1764 case CHR_IOCTL_PP_EPP_WRITE:
1765 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1766 struct ParallelIOArg *parg = arg;
1767 int n = write(fd, parg->buffer, parg->count);
1768 if (n != parg->count) {
1769 return -EIO;
1770 }
1771 }
1772 break;
1773 default:
1774 return -ENOTSUP;
1775 }
1776 return 0;
1777}
1778
1779static void pp_close(CharDriverState *chr)
1780{
1781 ParallelCharDriver *drv = chr->opaque;
1782 int fd = drv->fd;
1783
1784 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1785 ioctl(fd, PPRELEASE);
1786 close(fd);
7267c094 1787 g_free(drv);
a425d23f 1788 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1789}
1790
d0d7708b
DB		 1791static CharDriverState *qemu_chr_open_pp_fd(int fd,
1792 ChardevCommon *backend,
1793 Error **errp)
6f97dba0
AL		 1794{
1795 CharDriverState *chr;
1796 ParallelCharDriver *drv;
6f97dba0
AL		 1797
1798 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1799 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1800 close(fd);
1f51470d 1801 return NULL;
6f97dba0
AL		 1802 }
1803
d0d7708b
DB		 1804 chr = qemu_chr_alloc(backend, errp);
1805 if (!chr) {
1806 return NULL;
1807 }
27ef9cb0
PB		 1808
1809 drv = g_new0(ParallelCharDriver, 1);
1810 chr->opaque = drv;
6f97dba0
AL		 1811 chr->chr_write = null_chr_write;
1812 chr->chr_ioctl = pp_ioctl;
1813 chr->chr_close = pp_close;
27ef9cb0
PB		 1814
1815 drv->fd = fd;
1816 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1817
1f51470d 1818 return chr;
6f97dba0
AL		 1819}
1820#endif /* __linux__ */
1821
a167ba50 1822#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1823
1824#define HAVE_CHARDEV_PARPORT 1
1825
6972f935
BS		 1826static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1827{
e0efb993 1828 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1829 uint8_t b;
1830
1831 switch(cmd) {
1832 case CHR_IOCTL_PP_READ_DATA:
1833 if (ioctl(fd, PPIGDATA, &b) < 0)
1834 return -ENOTSUP;
1835 *(uint8_t *)arg = b;
1836 break;
1837 case CHR_IOCTL_PP_WRITE_DATA:
1838 b = *(uint8_t *)arg;
1839 if (ioctl(fd, PPISDATA, &b) < 0)
1840 return -ENOTSUP;
1841 break;
1842 case CHR_IOCTL_PP_READ_CONTROL:
1843 if (ioctl(fd, PPIGCTRL, &b) < 0)
1844 return -ENOTSUP;
1845 *(uint8_t *)arg = b;
1846 break;
1847 case CHR_IOCTL_PP_WRITE_CONTROL:
1848 b = *(uint8_t *)arg;
1849 if (ioctl(fd, PPISCTRL, &b) < 0)
1850 return -ENOTSUP;
1851 break;
1852 case CHR_IOCTL_PP_READ_STATUS:
1853 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1854 return -ENOTSUP;
1855 *(uint8_t *)arg = b;
1856 break;
1857 default:
1858 return -ENOTSUP;
1859 }
1860 return 0;
1861}
1862
d0d7708b 1863static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1864 ChardevCommon *backend,
d0d7708b 1865 Error **errp)
6972f935
BS		 1866{
1867 CharDriverState *chr;
6972f935 1868
0850d49c 1869 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1870 if (!chr) {
1871 return NULL;
1872 }
e0efb993 1873 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1874 chr->chr_write = null_chr_write;
1875 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1876 chr->explicit_be_open = true;
1f51470d 1877 return chr;
6972f935
BS		 1878}
1879#endif
1880
6f97dba0
AL		 1881#else /* _WIN32 */
1882
d809ab95
PB		 1883#define HAVE_CHARDEV_SERIAL 1
1884
6f97dba0
AL		 1885typedef struct {
1886 int max_size;
1887 HANDLE hcom, hrecv, hsend;
9005b2a7 1888 OVERLAPPED orecv;
6f97dba0
AL		 1889 BOOL fpipe;
1890 DWORD len;
9005b2a7
PB		 1891
1892 /* Protected by the CharDriverState chr_write_lock. */
1893 OVERLAPPED osend;
6f97dba0
AL		 1894} WinCharState;
1895
db418a0a
FC		 1896typedef struct {
1897 HANDLE hStdIn;
1898 HANDLE hInputReadyEvent;
1899 HANDLE hInputDoneEvent;
1900 HANDLE hInputThread;
1901 uint8_t win_stdio_buf;
1902} WinStdioCharState;
1903
6f97dba0
AL		 1904#define NSENDBUF 2048
1905#define NRECVBUF 2048
1906#define MAXCONNECT 1
1907#define NTIMEOUT 5000
1908
1909static int win_chr_poll(void *opaque);
1910static int win_chr_pipe_poll(void *opaque);
1911
1912static void win_chr_close(CharDriverState *chr)
1913{
1914 WinCharState *s = chr->opaque;
1915
1916 if (s->hsend) {
1917 CloseHandle(s->hsend);
1918 s->hsend = NULL;
1919 }
1920 if (s->hrecv) {
1921 CloseHandle(s->hrecv);
1922 s->hrecv = NULL;
1923 }
1924 if (s->hcom) {
1925 CloseHandle(s->hcom);
1926 s->hcom = NULL;
1927 }
1928 if (s->fpipe)
1929 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1930 else
1931 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1932
a425d23f 1933 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1934}
1935
6511d396 1936static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1937{
1938 WinCharState *s = chr->opaque;
1939 COMMCONFIG comcfg;
1940 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1941 COMSTAT comstat;
1942 DWORD size;
1943 DWORD err;
1944
1945 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1946 if (!s->hsend) {
6511d396 1947 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1948 goto fail;
1949 }
1950 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1951 if (!s->hrecv) {
6511d396 1952 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1953 goto fail;
1954 }
1955
1956 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1957 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1958 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1959 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1960 s->hcom = NULL;
1961 goto fail;
1962 }
1963
1964 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1965 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1966 goto fail;
1967 }
1968
1969 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1970 size = sizeof(COMMCONFIG);
1971 GetDefaultCommConfig(filename, &comcfg, &size);
1972 comcfg.dcb.DCBlength = sizeof(DCB);
1973 CommConfigDialog(filename, NULL, &comcfg);
1974
1975 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1976 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1977 goto fail;
1978 }
1979
1980 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1981 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1982 goto fail;
1983 }
1984
1985 cto.ReadIntervalTimeout = MAXDWORD;
1986 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1987 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1988 goto fail;
1989 }
1990
1991 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 1992 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 1993 goto fail;
1994 }
1995 qemu_add_polling_cb(win_chr_poll, chr);
1996 return 0;
1997
1998 fail:
1999 win_chr_close(chr);
2000 return -1;
2001}
2002
9005b2a7 2003/* Called with chr_write_lock held. */
6f97dba0
AL		 2004static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2005{
2006 WinCharState *s = chr->opaque;
2007 DWORD len, ret, size, err;
2008
2009 len = len1;
2010 ZeroMemory(&s->osend, sizeof(s->osend));
2011 s->osend.hEvent = s->hsend;
2012 while (len > 0) {
2013 if (s->hsend)
2014 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2015 else
2016 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2017 if (!ret) {
2018 err = GetLastError();
2019 if (err == ERROR_IO_PENDING) {
2020 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2021 if (ret) {
2022 buf += size;
2023 len -= size;
2024 } else {
2025 break;
2026 }
2027 } else {
2028 break;
2029 }
2030 } else {
2031 buf += size;
2032 len -= size;
2033 }
2034 }
2035 return len1 - len;
2036}
2037
2038static int win_chr_read_poll(CharDriverState *chr)
2039{
2040 WinCharState *s = chr->opaque;
2041
909cda12 2042 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2043 return s->max_size;
2044}
2045
2046static void win_chr_readfile(CharDriverState *chr)
2047{
2048 WinCharState *s = chr->opaque;
2049 int ret, err;
9bd7854e 2050 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2051 DWORD size;
2052
2053 ZeroMemory(&s->orecv, sizeof(s->orecv));
2054 s->orecv.hEvent = s->hrecv;
2055 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2056 if (!ret) {
2057 err = GetLastError();
2058 if (err == ERROR_IO_PENDING) {
2059 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2060 }
2061 }
2062
2063 if (size > 0) {
fa5efccb 2064 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2065 }
2066}
2067
2068static void win_chr_read(CharDriverState *chr)
2069{
2070 WinCharState *s = chr->opaque;
2071
2072 if (s->len > s->max_size)
2073 s->len = s->max_size;
2074 if (s->len == 0)
2075 return;
2076
2077 win_chr_readfile(chr);
2078}
2079
2080static int win_chr_poll(void *opaque)
2081{
2082 CharDriverState *chr = opaque;
2083 WinCharState *s = chr->opaque;
2084 COMSTAT status;
2085 DWORD comerr;
2086
2087 ClearCommError(s->hcom, &comerr, &status);
2088 if (status.cbInQue > 0) {
2089 s->len = status.cbInQue;
2090 win_chr_read_poll(chr);
2091 win_chr_read(chr);
2092 return 1;
2093 }
2094 return 0;
2095}
2096
6511d396 2097static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2098 ChardevCommon *backend,
6511d396 2099 Error **errp)
6f97dba0
AL		 2100{
2101 CharDriverState *chr;
2102 WinCharState *s;
2103
d0d7708b
DB		 2104 chr = qemu_chr_alloc(backend, errp);
2105 if (!chr) {
2106 return NULL;
2107 }
2d528d45 2108 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2109 chr->opaque = s;
2110 chr->chr_write = win_chr_write;
2111 chr->chr_close = win_chr_close;
2112
6511d396 2113 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2114 g_free(s);
d0d7708b 2115 qemu_chr_free_common(chr);
1f51470d 2116 return NULL;
6f97dba0 2117 }
1f51470d 2118 return chr;
6f97dba0
AL		 2119}
2120
2121static int win_chr_pipe_poll(void *opaque)
2122{
2123 CharDriverState *chr = opaque;
2124 WinCharState *s = chr->opaque;
2125 DWORD size;
2126
2127 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2128 if (size > 0) {
2129 s->len = size;
2130 win_chr_read_poll(chr);
2131 win_chr_read(chr);
2132 return 1;
2133 }
2134 return 0;
2135}
2136
20cbe7a2
PB		 2137static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2138 Error **errp)
6f97dba0
AL		 2139{
2140 WinCharState *s = chr->opaque;
2141 OVERLAPPED ov;
2142 int ret;
2143 DWORD size;
0ff0fad2 2144 char *openname;
6f97dba0
AL		 2145
2146 s->fpipe = TRUE;
2147
2148 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2149 if (!s->hsend) {
20cbe7a2 2150 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2151 goto fail;
2152 }
2153 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2154 if (!s->hrecv) {
20cbe7a2 2155 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2156 goto fail;
2157 }
2158
0ff0fad2 2159 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2160 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2161 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2162 PIPE_WAIT,
2163 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2164 g_free(openname);
6f97dba0 2165 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2166 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2167 s->hcom = NULL;
2168 goto fail;
2169 }
2170
2171 ZeroMemory(&ov, sizeof(ov));
2172 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2173 ret = ConnectNamedPipe(s->hcom, &ov);
2174 if (ret) {
20cbe7a2 2175 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2176 goto fail;
2177 }
2178
2179 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2180 if (!ret) {
20cbe7a2 2181 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2182 if (ov.hEvent) {
2183 CloseHandle(ov.hEvent);
2184 ov.hEvent = NULL;
2185 }
2186 goto fail;
2187 }
2188
2189 if (ov.hEvent) {
2190 CloseHandle(ov.hEvent);
2191 ov.hEvent = NULL;
2192 }
2193 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2194 return 0;
2195
2196 fail:
2197 win_chr_close(chr);
2198 return -1;
2199}
2200
2201
20cbe7a2
PB		 2202static CharDriverState *qemu_chr_open_pipe(const char *id,
2203 ChardevBackend *backend,
2204 ChardevReturn *ret,
2205 Error **errp)
6f97dba0 2206{
130257dc 2207 ChardevHostdev *opts = backend->u.pipe;
548cbb36 2208 const char *filename = opts->device;
6f97dba0
AL		 2209 CharDriverState *chr;
2210 WinCharState *s;
f194a1ae 2211 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2212
d0d7708b
DB		 2213 chr = qemu_chr_alloc(common, errp);
2214 if (!chr) {
2215 return NULL;
2216 }
2d528d45 2217 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2218 chr->opaque = s;
2219 chr->chr_write = win_chr_write;
2220 chr->chr_close = win_chr_close;
2221
20cbe7a2 2222 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2223 g_free(s);
d0d7708b 2224 qemu_chr_free_common(chr);
1f51470d 2225 return NULL;
6f97dba0 2226 }
1f51470d 2227 return chr;
6f97dba0
AL		 2228}
2229
d0d7708b
DB		 2230static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2231 ChardevCommon *backend,
2232 Error **errp)
6f97dba0
AL		 2233{
2234 CharDriverState *chr;
2235 WinCharState *s;
2236
d0d7708b
DB		 2237 chr = qemu_chr_alloc(backend, errp);
2238 if (!chr) {
2239 return NULL;
2240 }
2d528d45 2241 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2242 s->hcom = fd_out;
2243 chr->opaque = s;
2244 chr->chr_write = win_chr_write;
1f51470d 2245 return chr;
6f97dba0
AL		 2246}
2247
122e5ed4
PB		 2248static CharDriverState *qemu_chr_open_win_con(const char *id,
2249 ChardevBackend *backend,
2250 ChardevReturn *ret,
2251 Error **errp)
6f97dba0 2252{
b1918fbb 2253 ChardevCommon *common = backend->u.console;
d0d7708b
DB		 2254 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2255 common, errp);
6f97dba0
AL		 2256}
2257
db418a0a
FC		 2258static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2259{
2260 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2261 DWORD dwSize;
2262 int len1;
2263
2264 len1 = len;
2265
2266 while (len1 > 0) {
2267 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2268 break;
2269 }
2270 buf += dwSize;
2271 len1 -= dwSize;
2272 }
2273
2274 return len - len1;
2275}
2276
2277static void win_stdio_wait_func(void *opaque)
2278{
2279 CharDriverState *chr = opaque;
2280 WinStdioCharState *stdio = chr->opaque;
2281 INPUT_RECORD buf[4];
2282 int ret;
2283 DWORD dwSize;
2284 int i;
2285
dff7424d 2286 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2287
2288 if (!ret) {
2289 /* Avoid error storm */
2290 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2291 return;
2292 }
2293
2294 for (i = 0; i < dwSize; i++) {
2295 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2296
2297 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2298 int j;
2299 if (kev->uChar.AsciiChar != 0) {
2300 for (j = 0; j < kev->wRepeatCount; j++) {
2301 if (qemu_chr_be_can_write(chr)) {
2302 uint8_t c = kev->uChar.AsciiChar;
2303 qemu_chr_be_write(chr, &c, 1);
2304 }
2305 }
2306 }
2307 }
2308 }
2309}
2310
2311static DWORD WINAPI win_stdio_thread(LPVOID param)
2312{
2313 CharDriverState *chr = param;
2314 WinStdioCharState *stdio = chr->opaque;
2315 int ret;
2316 DWORD dwSize;
2317
2318 while (1) {
2319
2320 /* Wait for one byte */
2321 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2322
2323 /* Exit in case of error, continue if nothing read */
2324 if (!ret) {
2325 break;
2326 }
2327 if (!dwSize) {
2328 continue;
2329 }
2330
2331 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2332 if (stdio->win_stdio_buf == '\r') {
2333 continue;
2334 }
2335
2336 /* Signal the main thread and wait until the byte was eaten */
2337 if (!SetEvent(stdio->hInputReadyEvent)) {
2338 break;
2339 }
2340 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2341 != WAIT_OBJECT_0) {
2342 break;
2343 }
2344 }
2345
2346 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2347 return 0;
2348}
2349
2350static void win_stdio_thread_wait_func(void *opaque)
2351{
2352 CharDriverState *chr = opaque;
2353 WinStdioCharState *stdio = chr->opaque;
2354
2355 if (qemu_chr_be_can_write(chr)) {
2356 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2357 }
2358
2359 SetEvent(stdio->hInputDoneEvent);
2360}
2361
2362static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2363{
2364 WinStdioCharState *stdio = chr->opaque;
2365 DWORD dwMode = 0;
2366
2367 GetConsoleMode(stdio->hStdIn, &dwMode);
2368
2369 if (echo) {
2370 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2371 } else {
2372 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2373 }
2374}
2375
2376static void win_stdio_close(CharDriverState *chr)
2377{
2378 WinStdioCharState *stdio = chr->opaque;
2379
2380 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2381 CloseHandle(stdio->hInputReadyEvent);
2382 }
2383 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2384 CloseHandle(stdio->hInputDoneEvent);
2385 }
2386 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2387 TerminateThread(stdio->hInputThread, 0);
2388 }
2389
2390 g_free(chr->opaque);
2391 g_free(chr);
db418a0a
FC		 2392}
2393
8c84b25d
PB		 2394static CharDriverState *qemu_chr_open_stdio(const char *id,
2395 ChardevBackend *backend,
2396 ChardevReturn *ret,
2397 Error **errp)
db418a0a
FC		 2398{
2399 CharDriverState *chr;
2400 WinStdioCharState *stdio;
2401 DWORD dwMode;
2402 int is_console = 0;
d0d7708b 2403 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
db418a0a 2404
d0d7708b
DB		 2405 chr = qemu_chr_alloc(common, errp);
2406 if (!chr) {
2407 return NULL;
2408 }
2d528d45 2409 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2410
2411 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2412 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2413 error_setg(errp, "cannot open stdio: invalid handle");
2414 return NULL;
db418a0a
FC		 2415 }
2416
2417 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2418
2419 chr->opaque = stdio;
2420 chr->chr_write = win_stdio_write;
2421 chr->chr_close = win_stdio_close;
2422
ed7a1540
AL		 2423 if (is_console) {
2424 if (qemu_add_wait_object(stdio->hStdIn,
2425 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2426 error_setg(errp, "qemu_add_wait_object: failed");
2427 goto err1;
ed7a1540
AL		 2428 }
2429 } else {
2430 DWORD dwId;
2431
2432 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2433 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2434 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2435 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2436 error_setg(errp, "cannot create event");
2437 goto err2;
ed7a1540
AL		 2438 }
2439 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2440 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2441 error_setg(errp, "qemu_add_wait_object: failed");
2442 goto err2;
2443 }
2444 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2445 chr, 0, &dwId);
2446
2447 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2448 error_setg(errp, "cannot create stdio thread");
2449 goto err3;
db418a0a
FC		 2450 }
2451 }
2452
2453 dwMode |= ENABLE_LINE_INPUT;
2454
ed7a1540 2455 if (is_console) {
db418a0a
FC		 2456 /* set the terminal in raw mode */
2457 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2458 dwMode |= ENABLE_PROCESSED_INPUT;
2459 }
2460
2461 SetConsoleMode(stdio->hStdIn, dwMode);
2462
2463 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2464 qemu_chr_fe_set_echo(chr, false);
2465
1f51470d 2466 return chr;
8c84b25d
PB		 2467
2468err3:
2469 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2470err2:
2471 CloseHandle(stdio->hInputReadyEvent);
2472 CloseHandle(stdio->hInputDoneEvent);
2473err1:
2474 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2475 return NULL;
db418a0a 2476}
6f97dba0
AL		 2477#endif /* !_WIN32 */
2478
5ab8211b 2479
6f97dba0
AL		 2480/***********************************************************/
2481/* UDP Net console */
2482
2483typedef struct {
9894dc0c 2484 QIOChannel *ioc;
9bd7854e 2485 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2486 int bufcnt;
2487 int bufptr;
2488 int max_size;
2489} NetCharDriver;
2490
9005b2a7 2491/* Called with chr_write_lock held. */
6f97dba0
AL		 2492static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2493{
2494 NetCharDriver *s = chr->opaque;
76a9644b 2495
9894dc0c
DB		 2496 return qio_channel_write(
2497 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2498}
2499
2500static int udp_chr_read_poll(void *opaque)
2501{
2502 CharDriverState *chr = opaque;
2503 NetCharDriver *s = chr->opaque;
2504
909cda12 2505 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2506
2507 /* If there were any stray characters in the queue process them
2508 * first
2509 */
2510 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2511 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2512 s->bufptr++;
909cda12 2513 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2514 }
2515 return s->max_size;
2516}
2517
9894dc0c 2518static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2519{
2520 CharDriverState *chr = opaque;
2521 NetCharDriver *s = chr->opaque;
9894dc0c 2522 ssize_t ret;
6f97dba0 2523
cdbf6e16
PB		 2524 if (s->max_size == 0) {
2525 return TRUE;
2526 }
9894dc0c
DB		 2527 ret = qio_channel_read(
2528 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2529 if (ret <= 0) {
26da70c7 2530 remove_fd_in_watch(chr);
76a9644b
AL		 2531 return FALSE;
2532 }
9894dc0c 2533 s->bufcnt = ret;
6f97dba0
AL		 2534
2535 s->bufptr = 0;
2536 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2537 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2538 s->bufptr++;
909cda12 2539 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2540 }
76a9644b
AL		 2541
2542 return TRUE;
6f97dba0
AL		 2543}
2544
2545static void udp_chr_update_read_handler(CharDriverState *chr)
2546{
2547 NetCharDriver *s = chr->opaque;
2548
26da70c7 2549 remove_fd_in_watch(chr);
9894dc0c
DB		 2550 if (s->ioc) {
2551 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2552 udp_chr_read_poll,
7ba9addc 2553 udp_chr_read, chr);
6f97dba0
AL		 2554 }
2555}
2556
819f56b7
AL		 2557static void udp_chr_close(CharDriverState *chr)
2558{
2559 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2560
2561 remove_fd_in_watch(chr);
9894dc0c
DB		 2562 if (s->ioc) {
2563 object_unref(OBJECT(s->ioc));
819f56b7 2564 }
7267c094 2565 g_free(s);
a425d23f 2566 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2567}
2568
9894dc0c
DB		 2569static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2570 ChardevCommon *backend,
2571 Error **errp)
6f97dba0
AL		 2572{
2573 CharDriverState *chr = NULL;
2574 NetCharDriver *s = NULL;
6f97dba0 2575
d0d7708b
DB		 2576 chr = qemu_chr_alloc(backend, errp);
2577 if (!chr) {
2578 return NULL;
2579 }
2d528d45 2580 s = g_new0(NetCharDriver, 1);
6f97dba0 2581
9894dc0c 2582 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2583 s->bufcnt = 0;
2584 s->bufptr = 0;
2585 chr->opaque = s;
2586 chr->chr_write = udp_chr_write;
2587 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2588 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2589 /* be isn't opened until we get a connection */
2590 chr->explicit_be_open = true;
1f51470d 2591 return chr;
3ecc059d 2592}
6f97dba0 2593
6f97dba0
AL		 2594/***********************************************************/
2595/* TCP Net console */
2596
2597typedef struct {
a8fb5427
DB		 2598 QIOChannel *ioc; /* Client I/O channel */
2599 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2600 QIOChannelSocket *listen_ioc;
7ba9addc 2601 guint listen_tag;
a8fb5427 2602 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2603 int connected;
2604 int max_size;
2605 int do_telnetopt;
2606 int do_nodelay;
2607 int is_unix;
c76bf6bb 2608 int *read_msgfds;
9894dc0c 2609 size_t read_msgfds_num;
d39aac7a 2610 int *write_msgfds;
9894dc0c 2611 size_t write_msgfds_num;
cfb429cb
CM		 2612
2613 SocketAddress *addr;
2614 bool is_listen;
2615 bool is_telnet;
5dd1f02b
CM		 2616
2617 guint reconnect_timer;
2618 int64_t reconnect_time;
5008e5b7 2619 bool connect_err_reported;
6f97dba0
AL		 2620} TCPCharDriver;
2621
5dd1f02b
CM		 2622static gboolean socket_reconnect_timeout(gpointer opaque);
2623
2624static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2625{
2626 TCPCharDriver *s = chr->opaque;
2627 assert(s->connected == 0);
2628 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2629 socket_reconnect_timeout, chr);
2630}
2631
5008e5b7
CM		 2632static void check_report_connect_error(CharDriverState *chr,
2633 Error *err)
2634{
2635 TCPCharDriver *s = chr->opaque;
2636
2637 if (!s->connect_err_reported) {
2638 error_report("Unable to connect character device %s: %s",
2639 chr->label, error_get_pretty(err));
2640 s->connect_err_reported = true;
2641 }
2642 qemu_chr_socket_restart_timer(chr);
2643}
2644
9894dc0c
DB		 2645static gboolean tcp_chr_accept(QIOChannel *chan,
2646 GIOCondition cond,
2647 void *opaque);
d39aac7a 2648
9005b2a7 2649/* Called with chr_write_lock held. */
6f97dba0
AL		 2650static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2651{
2652 TCPCharDriver *s = chr->opaque;
2653 if (s->connected) {
9894dc0c
DB		 2654 int ret = io_channel_send_full(s->ioc, buf, len,
2655 s->write_msgfds,
2656 s->write_msgfds_num);
2657
2658 /* free the written msgfds, no matter what */
2659 if (s->write_msgfds_num) {
2660 g_free(s->write_msgfds);
2661 s->write_msgfds = 0;
2662 s->write_msgfds_num = 0;
d39aac7a 2663 }
9894dc0c
DB		 2664
2665 return ret;
455aa1e0 2666 } else {
6db0fdce 2667 /* XXX: indicate an error ? */
455aa1e0 2668 return len;
6f97dba0
AL		 2669 }
2670}
2671
2672static int tcp_chr_read_poll(void *opaque)
2673{
2674 CharDriverState *chr = opaque;
2675 TCPCharDriver *s = chr->opaque;
2676 if (!s->connected)
2677 return 0;
909cda12 2678 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2679 return s->max_size;
2680}
2681
2682#define IAC 255
2683#define IAC_BREAK 243
2684static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2685 TCPCharDriver *s,
2686 uint8_t *buf, int *size)
2687{
2688 /* Handle any telnet client's basic IAC options to satisfy char by
2689 * char mode with no echo. All IAC options will be removed from
2690 * the buf and the do_telnetopt variable will be used to track the
2691 * state of the width of the IAC information.
2692 *
2693 * IAC commands come in sets of 3 bytes with the exception of the
2694 * "IAC BREAK" command and the double IAC.
2695 */
2696
2697 int i;
2698 int j = 0;
2699
2700 for (i = 0; i < *size; i++) {
2701 if (s->do_telnetopt > 1) {
2702 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2703 /* Double IAC means send an IAC */
2704 if (j != i)
2705 buf[j] = buf[i];
2706 j++;
2707 s->do_telnetopt = 1;
2708 } else {
2709 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2710 /* Handle IAC break commands by sending a serial break */
a425d23f 2711 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2712 s->do_telnetopt++;
2713 }
2714 s->do_telnetopt++;
2715 }
2716 if (s->do_telnetopt >= 4) {
2717 s->do_telnetopt = 1;
2718 }
2719 } else {
2720 if ((unsigned char)buf[i] == IAC) {
2721 s->do_telnetopt = 2;
2722 } else {
2723 if (j != i)
2724 buf[j] = buf[i];
2725 j++;
2726 }
2727 }
2728 }
2729 *size = j;
2730}
2731
c76bf6bb 2732static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2733{
2734 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2735 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2736
c4095726
MT		 2737 assert(num <= TCP_MAX_FDS);
2738
c76bf6bb 2739 if (to_copy) {
d2fc39b4
SH		 2740 int i;
2741
c76bf6bb
NN		 2742 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2743
d2fc39b4
SH		 2744 /* Close unused fds */
2745 for (i = to_copy; i < s->read_msgfds_num; i++) {
2746 close(s->read_msgfds[i]);
2747 }
2748
c76bf6bb
NN		 2749 g_free(s->read_msgfds);
2750 s->read_msgfds = 0;
2751 s->read_msgfds_num = 0;
2752 }
2753
2754 return to_copy;
7d174059
MM		 2755}
2756
d39aac7a
NN		 2757static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2758{
2759 TCPCharDriver *s = chr->opaque;
2760
9894dc0c
DB		 2761 if (!qio_channel_has_feature(s->ioc,
2762 QIO_CHANNEL_FEATURE_FD_PASS)) {
2763 return -1;
2764 }
d39aac7a 2765 /* clear old pending fd array */
ef1e1e07 2766 g_free(s->write_msgfds);
869a58af 2767 s->write_msgfds = NULL;
d39aac7a
NN		 2768
2769 if (num) {
2d528d45 2770 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2771 memcpy(s->write_msgfds, fds, num * sizeof(int));
2772 }
2773
2774 s->write_msgfds_num = num;
2775
2776 return 0;
2777}
2778
9894dc0c 2779static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2780{
2781 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2782 struct iovec iov = { .iov_base = buf, .iov_len = len };
2783 int ret;
2784 size_t i;
2785 int *msgfds = NULL;
2786 size_t msgfds_num = 0;
2787
2788 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2789 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2790 &msgfds, &msgfds_num,
2791 NULL);
2792 } else {
2793 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2794 NULL, NULL,
2795 NULL);
2796 }
7d174059 2797
9894dc0c 2798 if (msgfds_num) {
c76bf6bb
NN		 2799 /* close and clean read_msgfds */
2800 for (i = 0; i < s->read_msgfds_num; i++) {
2801 close(s->read_msgfds[i]);
2802 }
9b938c72 2803
c76bf6bb
NN		 2804 if (s->read_msgfds_num) {
2805 g_free(s->read_msgfds);
2806 }
2807
9894dc0c
DB		 2808 s->read_msgfds = msgfds;
2809 s->read_msgfds_num = msgfds_num;
7d174059 2810 }
7d174059 2811
9894dc0c
DB		 2812 for (i = 0; i < s->read_msgfds_num; i++) {
2813 int fd = s->read_msgfds[i];
2814 if (fd < 0) {
2815 continue;
2816 }
9977c894 2817
9894dc0c
DB		 2818 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2819 qemu_set_block(fd);
7d174059 2820
9894dc0c
DB		 2821#ifndef MSG_CMSG_CLOEXEC
2822 qemu_set_cloexec(fd);
06138651 2823#endif
06138651 2824 }
9977c894 2825
7d174059 2826 return ret;
9977c894 2827}
9977c894 2828
d3cc5bc4
AS		 2829static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2830{
2831 TCPCharDriver *s = chr->opaque;
9894dc0c 2832 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2833}
2834
7b0bfdf5
NN		 2835static void tcp_chr_disconnect(CharDriverState *chr)
2836{
2837 TCPCharDriver *s = chr->opaque;
2838
342f7a9d
MAL		 2839 if (!s->connected) {
2840 return;
2841 }
2842
7b0bfdf5 2843 s->connected = 0;
9894dc0c
DB		 2844 if (s->listen_ioc) {
2845 s->listen_tag = qio_channel_add_watch(
2846 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
7b0bfdf5 2847 }
6167ebbd 2848 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2849 remove_fd_in_watch(chr);
a8fb5427
DB		 2850 object_unref(OBJECT(s->sioc));
2851 s->sioc = NULL;
9894dc0c
DB		 2852 object_unref(OBJECT(s->ioc));
2853 s->ioc = NULL;
0ff0fad2
DB		 2854 g_free(chr->filename);
2855 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2856 s->is_listen, s->is_telnet);
7b0bfdf5 2857 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2858 if (s->reconnect_time) {
2859 qemu_chr_socket_restart_timer(chr);
2860 }
7b0bfdf5
NN		 2861}
2862
9894dc0c 2863static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2864{
2865 CharDriverState *chr = opaque;
2866 TCPCharDriver *s = chr->opaque;
9bd7854e 2867 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2868 int len, size;
2869
2ea5a7af 2870 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2871 return TRUE;
2ea5a7af 2872 }
6f97dba0
AL		 2873 len = sizeof(buf);
2874 if (len > s->max_size)
2875 len = s->max_size;
9977c894 2876 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2877 if (size == 0 || size == -1) {
6f97dba0 2878 /* connection closed */
7b0bfdf5 2879 tcp_chr_disconnect(chr);
6f97dba0
AL		 2880 } else if (size > 0) {
2881 if (s->do_telnetopt)
2882 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2883 if (size > 0)
fa5efccb 2884 qemu_chr_be_write(chr, buf, size);
6f97dba0 2885 }
2ea5a7af
AL		 2886
2887 return TRUE;
6f97dba0
AL		 2888}
2889
7b0bfdf5
NN		 2890static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2891{
2892 TCPCharDriver *s = chr->opaque;
2893 int size;
2894
2895 if (!s->connected) {
2896 return 0;
2897 }
2898
2899 size = tcp_chr_recv(chr, (void *) buf, len);
2900 if (size == 0) {
2901 /* connection closed */
2902 tcp_chr_disconnect(chr);
2903 }
2904
2905 return size;
2906}
2907
6f97dba0
AL		 2908static void tcp_chr_connect(void *opaque)
2909{
2910 CharDriverState *chr = opaque;
2911 TCPCharDriver *s = chr->opaque;
16cc4ffe 2912
0ff0fad2 2913 g_free(chr->filename);
a8fb5427
DB		 2914 chr->filename = sockaddr_to_str(
2915 &s->sioc->localAddr, s->sioc->localAddrLen,
2916 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2917 s->is_listen, s->is_telnet);
6f97dba0
AL		 2918
2919 s->connected = 1;
9894dc0c
DB		 2920 if (s->ioc) {
2921 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2922 tcp_chr_read_poll,
7ba9addc 2923 tcp_chr_read, chr);
bbdd2ad0 2924 }
fee204fd 2925 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2926}
2927
ac1b84dd
GH		 2928static void tcp_chr_update_read_handler(CharDriverState *chr)
2929{
2930 TCPCharDriver *s = chr->opaque;
2931
1e94f23d
DB		 2932 if (!s->connected) {
2933 return;
2934 }
2935
ac1b84dd 2936 remove_fd_in_watch(chr);
9894dc0c
DB		 2937 if (s->ioc) {
2938 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2939 tcp_chr_read_poll,
ac1b84dd
GH		 2940 tcp_chr_read, chr);
2941 }
2942}
2943
f2001a7e
DB		 2944typedef struct {
2945 CharDriverState *chr;
2946 char buf[12];
2947 size_t buflen;
2948} TCPCharDriverTelnetInit;
2949
2950static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2951 GIOCondition cond G_GNUC_UNUSED,
2952 gpointer user_data)
6f97dba0 2953{
f2001a7e
DB		 2954 TCPCharDriverTelnetInit *init = user_data;
2955 ssize_t ret;
2956
2957 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2958 if (ret < 0) {
2959 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2960 ret = 0;
2961 } else {
2962 tcp_chr_disconnect(init->chr);
2963 return FALSE;
2964 }
2965 }
2966 init->buflen -= ret;
2967
2968 if (init->buflen == 0) {
2969 tcp_chr_connect(init->chr);
2970 return FALSE;
2971 }
2972
2973 memmove(init->buf, init->buf + ret, init->buflen);
2974
2975 return TRUE;
2976}
2977
2978static void tcp_chr_telnet_init(CharDriverState *chr)
2979{
2980 TCPCharDriver *s = chr->opaque;
2981 TCPCharDriverTelnetInit *init =
2982 g_new0(TCPCharDriverTelnetInit, 1);
2983 size_t n = 0;
2984
2985 init->chr = chr;
2986 init->buflen = 12;
2987
2988#define IACSET(x, a, b, c) \
2989 do { \
2990 x[n++] = a; \
2991 x[n++] = b; \
2992 x[n++] = c; \
2993 } while (0)
2994
2995 /* Prep the telnet negotion to put telnet in binary,
2996 * no echo, single char mode */
2997 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2998 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2999 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3000 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3001
3002#undef IACSET
3003
3004 qio_channel_add_watch(
3005 s->ioc, G_IO_OUT,
3006 tcp_chr_telnet_init_io,
3007 init, NULL);
6f97dba0
AL		 3008}
3009
a8fb5427
DB		 3010
3011static void tcp_chr_tls_handshake(Object *source,
3012 Error *err,
3013 gpointer user_data)
3014{
3015 CharDriverState *chr = user_data;
3016 TCPCharDriver *s = chr->opaque;
3017
3018 if (err) {
3019 tcp_chr_disconnect(chr);
3020 } else {
3021 if (s->do_telnetopt) {
3022 tcp_chr_telnet_init(chr);
3023 } else {
3024 tcp_chr_connect(chr);
3025 }
3026 }
3027}
3028
3029
3030static void tcp_chr_tls_init(CharDriverState *chr)
3031{
3032 TCPCharDriver *s = chr->opaque;
3033 QIOChannelTLS *tioc;
3034 Error *err = NULL;
3035
3036 if (s->is_listen) {
3037 tioc = qio_channel_tls_new_server(
3038 s->ioc, s->tls_creds,
3039 NULL, /* XXX Use an ACL */
3040 &err);
3041 } else {
3042 tioc = qio_channel_tls_new_client(
3043 s->ioc, s->tls_creds,
3044 s->addr->u.inet->host,
3045 &err);
3046 }
3047 if (tioc == NULL) {
3048 error_free(err);
3049 tcp_chr_disconnect(chr);
3050 }
3051 object_unref(OBJECT(s->ioc));
3052 s->ioc = QIO_CHANNEL(tioc);
3053
3054 qio_channel_tls_handshake(tioc,
3055 tcp_chr_tls_handshake,
3056 chr,
3057 NULL);
3058}
3059
3060
9894dc0c 3061static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3062{
3063 TCPCharDriver *s = chr->opaque;
9894dc0c 3064 if (s->ioc != NULL) {
13661089 3065 return -1;
9894dc0c 3066 }
13661089 3067
9894dc0c
DB		 3068 s->ioc = QIO_CHANNEL(sioc);
3069 object_ref(OBJECT(sioc));
a8fb5427
DB		 3070 s->sioc = sioc;
3071 object_ref(OBJECT(sioc));
9894dc0c
DB		 3072
3073 if (s->do_nodelay) {
3074 qio_channel_set_delay(s->ioc, false);
3075 }
910b6368
PB		 3076 if (s->listen_tag) {
3077 g_source_remove(s->listen_tag);
3078 s->listen_tag = 0;
3079 }
f2001a7e 3080
a8fb5427
DB		 3081 if (s->tls_creds) {
3082 tcp_chr_tls_init(chr);
f2001a7e 3083 } else {
a8fb5427
DB		 3084 if (s->do_telnetopt) {
3085 tcp_chr_telnet_init(chr);
3086 } else {
3087 tcp_chr_connect(chr);
3088 }
f2001a7e 3089 }
13661089
DB		 3090
3091 return 0;
3092}
3093
9894dc0c
DB		 3094
3095static int tcp_chr_add_client(CharDriverState *chr, int fd)
3096{
3097 int ret;
3098 QIOChannelSocket *sioc;
3099
3100 sioc = qio_channel_socket_new_fd(fd, NULL);
3101 if (!sioc) {
3102 return -1;
3103 }
3104 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3105 ret = tcp_chr_new_client(chr, sioc);
3106 object_unref(OBJECT(sioc));
3107 return ret;
3108}
3109
3110static gboolean tcp_chr_accept(QIOChannel *channel,
3111 GIOCondition cond,
3112 void *opaque)
6f97dba0
AL		 3113{
3114 CharDriverState *chr = opaque;
9894dc0c 3115 QIOChannelSocket *sioc;
6f97dba0 3116
9894dc0c
DB		 3117 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3118 NULL);
3119 if (!sioc) {
3120 return TRUE;
6f97dba0 3121 }
9894dc0c 3122
9894dc0c
DB		 3123 tcp_chr_new_client(chr, sioc);
3124
3125 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3126
3127 return TRUE;
6f97dba0
AL		 3128}
3129
3130static void tcp_chr_close(CharDriverState *chr)
3131{
3132 TCPCharDriver *s = chr->opaque;
c76bf6bb 3133 int i;
cfb429cb 3134
5dd1f02b
CM		 3135 if (s->reconnect_timer) {
3136 g_source_remove(s->reconnect_timer);
3137 s->reconnect_timer = 0;
3138 }
cfb429cb 3139 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3140 remove_fd_in_watch(chr);
3141 if (s->ioc) {
3142 object_unref(OBJECT(s->ioc));
819f56b7 3143 }
9894dc0c
DB		 3144 if (s->listen_tag) {
3145 g_source_remove(s->listen_tag);
3146 s->listen_tag = 0;
3147 }
3148 if (s->listen_ioc) {
3149 object_unref(OBJECT(s->listen_ioc));
819f56b7 3150 }
c76bf6bb
NN		 3151 if (s->read_msgfds_num) {
3152 for (i = 0; i < s->read_msgfds_num; i++) {
3153 close(s->read_msgfds[i]);
3154 }
3155 g_free(s->read_msgfds);
3156 }
a8fb5427
DB		 3157 if (s->tls_creds) {
3158 object_unref(OBJECT(s->tls_creds));
3159 }
d39aac7a
NN		 3160 if (s->write_msgfds_num) {
3161 g_free(s->write_msgfds);
3162 }
7267c094 3163 g_free(s);
a425d23f 3164 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3165}
3166
43ded1a0 3167
9894dc0c 3168static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3169{
9894dc0c 3170 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3171 CharDriverState *chr = opaque;
5008e5b7 3172 TCPCharDriver *s = chr->opaque;
5dd1f02b 3173
9894dc0c 3174 if (err) {
5008e5b7 3175 check_report_connect_error(chr, err);
9894dc0c 3176 object_unref(src);
5dd1f02b
CM		 3177 return;
3178 }
3179
5008e5b7 3180 s->connect_err_reported = false;
f50dfe45
DB		 3181 tcp_chr_new_client(chr, sioc);
3182 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3183}
3184
f6bd5d6e 3185
51767e7c 3186/*********************************************************/
3949e594 3187/* Ring buffer chardev */
51767e7c
LL		 3188
3189typedef struct {
3190 size_t size;
3191 size_t prod;
3192 size_t cons;
3193 uint8_t *cbuf;
3949e594 3194} RingBufCharDriver;
51767e7c 3195
3949e594 3196static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3197{
3949e594 3198 const RingBufCharDriver *d = chr->opaque;
51767e7c 3199
5c230105 3200 return d->prod - d->cons;
51767e7c
LL		 3201}
3202
9005b2a7 3203/* Called with chr_write_lock held. */
3949e594 3204static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3205{
3949e594 3206 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3207 int i;
3208
3209 if (!buf || (len < 0)) {
3210 return -1;
3211 }
3212
3213 for (i = 0; i < len; i++ ) {
5c230105
MA		 3214 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3215 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3216 d->cons = d->prod - d->size;
3217 }
3218 }
3219
3220 return 0;
3221}
3222
3949e594 3223static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3224{
3949e594 3225 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3226 int i;
3227
9005b2a7 3228 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3229 for (i = 0; i < len && d->cons != d->prod; i++) {
3230 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3231 }
9005b2a7 3232 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3233
3234 return i;
3235}
3236
3949e594 3237static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3238{
3949e594 3239 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3240
3241 g_free(d->cbuf);
3242 g_free(d);
3243 chr->opaque = NULL;
3244}
3245
479f09a1
PB		 3246static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3247 ChardevBackend *backend,
3248 ChardevReturn *ret,
4f57378f 3249 Error **errp)
51767e7c 3250{
130257dc 3251 ChardevRingbuf *opts = backend->u.ringbuf;
f194a1ae 3252 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3253 CharDriverState *chr;
3949e594 3254 RingBufCharDriver *d;
51767e7c 3255
d0d7708b
DB		 3256 chr = qemu_chr_alloc(common, errp);
3257 if (!chr) {
3258 return NULL;
3259 }
51767e7c
LL		 3260 d = g_malloc(sizeof(*d));
3261
1da48c65 3262 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3263
3264 /* The size must be power of 2 */
3265 if (d->size & (d->size - 1)) {
4f57378f 3266 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3267 goto fail;
3268 }
3269
3270 d->prod = 0;
3271 d->cons = 0;
3272 d->cbuf = g_malloc0(d->size);
3273
3274 chr->opaque = d;
3949e594
MA		 3275 chr->chr_write = ringbuf_chr_write;
3276 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3277
3278 return chr;
3279
3280fail:
3281 g_free(d);
d0d7708b 3282 qemu_chr_free_common(chr);
51767e7c
LL		 3283 return NULL;
3284}
3285
8e597779 3286bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3287{
3949e594 3288 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3289}
3290
3949e594 3291void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3292 bool has_format, enum DataFormat format,
1f590cf9
LL		 3293 Error **errp)
3294{
3295 CharDriverState *chr;
c4f331b6 3296 const uint8_t *write_data;
1f590cf9 3297 int ret;
3d1bba20 3298 gsize write_count;
1f590cf9
LL		 3299
3300 chr = qemu_chr_find(device);
3301 if (!chr) {
1a69278e 3302 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3303 return;
3304 }
3305
3949e594
MA		 3306 if (!chr_is_ringbuf(chr)) {
3307 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3308 return;
3309 }
3310
1f590cf9 3311 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3312 write_data = qbase64_decode(data, -1,
3313 &write_count,
3314 errp);
3315 if (!write_data) {
3316 return;
3317 }
1f590cf9
LL		 3318 } else {
3319 write_data = (uint8_t *)data;
82e59a67 3320 write_count = strlen(data);
1f590cf9
LL		 3321 }
3322
3949e594 3323 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3324
13289fb5
MA		 3325 if (write_data != (uint8_t *)data) {
3326 g_free((void *)write_data);
3327 }
3328
1f590cf9
LL		 3329 if (ret < 0) {
3330 error_setg(errp, "Failed to write to device %s", device);
3331 return;
3332 }
3333}
3334
3949e594 3335char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3336 bool has_format, enum DataFormat format,
3337 Error **errp)
49b6d722
LL		 3338{
3339 CharDriverState *chr;
c4f331b6 3340 uint8_t *read_data;
49b6d722 3341 size_t count;
3ab651fc 3342 char *data;
49b6d722
LL		 3343
3344 chr = qemu_chr_find(device);
3345 if (!chr) {
1a69278e 3346 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3347 return NULL;
3348 }
3349
3949e594
MA		 3350 if (!chr_is_ringbuf(chr)) {
3351 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3352 return NULL;
3353 }
3354
3355 if (size <= 0) {
3356 error_setg(errp, "size must be greater than zero");
3357 return NULL;
3358 }
3359
3949e594 3360 count = ringbuf_count(chr);
49b6d722 3361 size = size > count ? count : size;
44f3bcd2 3362 read_data = g_malloc(size + 1);
49b6d722 3363
3949e594 3364 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3365
3366 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3367 data = g_base64_encode(read_data, size);
13289fb5 3368 g_free(read_data);
49b6d722 3369 } else {
3949e594
MA		 3370 /*
3371 * FIXME should read only complete, valid UTF-8 characters up
3372 * to @size bytes. Invalid sequences should be replaced by a
3373 * suitable replacement character. Except when (and only
3374 * when) ring buffer lost characters since last read, initial
3375 * continuation characters should be dropped.
3376 */
44f3bcd2 3377 read_data[size] = 0;
3ab651fc 3378 data = (char *)read_data;
49b6d722
LL		 3379 }
3380
3ab651fc 3381 return data;
49b6d722
LL		 3382}
3383
33521634 3384QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3385{
6ea314d9 3386 char host[65], port[33], width[8], height[8];
aeb2c47a 3387 int pos;
7d31544f 3388 const char *p;
191bc01b 3389 QemuOpts *opts;
8be7e7e4 3390 Error *local_err = NULL;
191bc01b 3391
8be7e7e4 3392 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3393 if (local_err) {
33394884 3394 error_report_err(local_err);
191bc01b 3395 return NULL;
8be7e7e4 3396 }
191bc01b 3397
7591c5c1
GH		 3398 if (strstart(filename, "mon:", &p)) {
3399 filename = p;
f43e47db 3400 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3401 if (strcmp(filename, "stdio") == 0) {
3402 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3403 * but pass it to the guest. Handle this only for compat syntax,
3404 * for -chardev syntax we have special option for this.
3405 * This is what -nographic did, redirecting+muxing serial+monitor
3406 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3407 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3408 }
7591c5c1
GH		 3409 }
3410
f0457e8d
GH		 3411 if (strcmp(filename, "null") == 0 ||
3412 strcmp(filename, "pty") == 0 ||
3413 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3414 strcmp(filename, "braille") == 0 ||
5692399f 3415 strcmp(filename, "testdev") == 0 ||
f0457e8d 3416 strcmp(filename, "stdio") == 0) {
f43e47db 3417 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3418 return opts;
3419 }
6ea314d9 3420 if (strstart(filename, "vc", &p)) {
f43e47db 3421 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3422 if (*p == ':') {
49aa4058 3423 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3424 /* pixels */
f43e47db
MA		 3425 qemu_opt_set(opts, "width", width, &error_abort);
3426 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3427 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3428 /* chars */
f43e47db
MA		 3429 qemu_opt_set(opts, "cols", width, &error_abort);
3430 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3431 } else {
3432 goto fail;
3433 }
3434 }
3435 return opts;
3436 }
d6c983cd 3437 if (strcmp(filename, "con:") == 0) {
f43e47db 3438 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3439 return opts;
3440 }
48b76496 3441 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3442 qemu_opt_set(opts, "backend", "serial", &error_abort);
3443 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3444 return opts;
3445 }
7d31544f 3446 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3447 qemu_opt_set(opts, "backend", "file", &error_abort);
3448 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3449 return opts;
3450 }
3451 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3452 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3453 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3454 return opts;
3455 }
aeb2c47a
GH		 3456 if (strstart(filename, "tcp:", &p) ||
3457 strstart(filename, "telnet:", &p)) {
3458 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3459 host[0] = 0;
3460 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3461 goto fail;
3462 }
f43e47db
MA		 3463 qemu_opt_set(opts, "backend", "socket", &error_abort);
3464 qemu_opt_set(opts, "host", host, &error_abort);
3465 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3466 if (p[pos] == ',') {
dc523cd3
MA		 3467 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3468 if (local_err) {
3469 error_report_err(local_err);
aeb2c47a 3470 goto fail;
dc523cd3 3471 }
aeb2c47a
GH		 3472 }
3473 if (strstart(filename, "telnet:", &p))
f43e47db 3474 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3475 return opts;
3476 }
7e1b35b4 3477 if (strstart(filename, "udp:", &p)) {
f43e47db 3478 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3479 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3480 host[0] = 0;
39324ca4 3481 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3482 goto fail;
3483 }
3484 }
f43e47db
MA		 3485 qemu_opt_set(opts, "host", host, &error_abort);
3486 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3487 if (p[pos] == '@') {
3488 p += pos + 1;
3489 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3490 host[0] = 0;
3491 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3492 goto fail;
3493 }
3494 }
f43e47db
MA		 3495 qemu_opt_set(opts, "localaddr", host, &error_abort);
3496 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3497 }
3498 return opts;
3499 }
aeb2c47a 3500 if (strstart(filename, "unix:", &p)) {
f43e47db 3501 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3502 qemu_opts_do_parse(opts, p, "path", &local_err);
3503 if (local_err) {
3504 error_report_err(local_err);
aeb2c47a 3505 goto fail;
dc523cd3 3506 }
aeb2c47a
GH		 3507 return opts;
3508 }
48b76496
GH		 3509 if (strstart(filename, "/dev/parport", NULL) ||
3510 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3511 qemu_opt_set(opts, "backend", "parport", &error_abort);
3512 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3513 return opts;
3514 }
3515 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3516 qemu_opt_set(opts, "backend", "tty", &error_abort);
3517 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3518 return opts;
3519 }
191bc01b 3520
aeb2c47a 3521fail:
191bc01b
GH		 3522 qemu_opts_del(opts);
3523 return NULL;
3524}
3525
21a933ea 3526void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3527{
3528 const char *logfile = qemu_opt_get(opts, "logfile");
3529
3530 backend->has_logfile = logfile != NULL;
3531 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3532
3533 backend->has_logappend = true;
3534 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3535}
3536
3537
846e2e49
GH		 3538static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3539 Error **errp)
3540{
3541 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3542 ChardevFile *file;
846e2e49
GH		 3543
3544 if (path == NULL) {
3545 error_setg(errp, "chardev: file: no filename given");
3546 return;
3547 }
f194a1ae
EB		 3548 file = backend->u.file = g_new0(ChardevFile, 1);
3549 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3550 file->out = g_strdup(path);
31e38a22 3551
f194a1ae
EB		 3552 file->has_append = true;
3553 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3554}
3555
7c358031
GH		 3556static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3557 Error **errp)
3558{
f194a1ae
EB		 3559 ChardevStdio *stdio;
3560
3561 stdio = backend->u.stdio = g_new0(ChardevStdio, 1);
3562 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3563 stdio->has_signal = true;
3564 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3565}
3566
6511d396 3567#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3568static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3569 Error **errp)
3570{
3571 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3572 ChardevHostdev *serial;
0f1cb51d
GH		 3573
3574 if (device == NULL) {
3575 error_setg(errp, "chardev: serial/tty: no device path given");
3576 return;
3577 }
f194a1ae
EB		 3578 serial = backend->u.serial = g_new0(ChardevHostdev, 1);
3579 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3580 serial->device = g_strdup(device);
0f1cb51d 3581}
6511d396 3582#endif
0f1cb51d 3583
38bfb1a6 3584#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3585static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3586 Error **errp)
3587{
3588 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3589 ChardevHostdev *parallel;
dc375097
GH		 3590
3591 if (device == NULL) {
3592 error_setg(errp, "chardev: parallel: no device path given");
3593 return;
3594 }
f194a1ae
EB		 3595 parallel = backend->u.parallel = g_new0(ChardevHostdev, 1);
3596 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3597 parallel->device = g_strdup(device);
dc375097 3598}
38bfb1a6 3599#endif
dc375097 3600
548cbb36
GH		 3601static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3602 Error **errp)
3603{
3604 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3605 ChardevHostdev *dev;
548cbb36
GH		 3606
3607 if (device == NULL) {
3608 error_setg(errp, "chardev: pipe: no device path given");
3609 return;
3610 }
f194a1ae
EB		 3611 dev = backend->u.pipe = g_new0(ChardevHostdev, 1);
3612 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3613 dev->device = g_strdup(device);
548cbb36
GH		 3614}
3615
4f57378f
MA		 3616static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3617 Error **errp)
1da48c65
GH		 3618{
3619 int val;
f194a1ae 3620 ChardevRingbuf *ringbuf;
1da48c65 3621
f194a1ae
EB		 3622 ringbuf = backend->u.ringbuf = g_new0(ChardevRingbuf, 1);
3623 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3624
0f953051 3625 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3626 if (val != 0) {
f194a1ae
EB		 3627 ringbuf->has_size = true;
3628 ringbuf->size = val;
1da48c65
GH		 3629 }
3630}
3631
bb6fb7c0
GH		 3632static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3633 Error **errp)
3634{
3635 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3636 ChardevMux *mux;
bb6fb7c0
GH		 3637
3638 if (chardev == NULL) {
3639 error_setg(errp, "chardev: mux: no chardev given");
3640 return;
3641 }
f194a1ae
EB		 3642 mux = backend->u.mux = g_new0(ChardevMux, 1);
3643 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3644 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3645}
3646
dafd325d
PM		 3647static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3648 Error **errp)
3649{
3650 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3651 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3652 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3653 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3654 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3655 const char *path = qemu_opt_get(opts, "path");
3656 const char *host = qemu_opt_get(opts, "host");
3657 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3658 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3659 SocketAddress *addr;
f194a1ae 3660 ChardevSocket *sock;
dafd325d
PM		 3661
3662 if (!path) {
3663 if (!host) {
3664 error_setg(errp, "chardev: socket: no host given");
3665 return;
3666 }
3667 if (!port) {
3668 error_setg(errp, "chardev: socket: no port given");
3669 return;
3670 }
a8fb5427
DB		 3671 } else {
3672 if (tls_creds) {
3673 error_setg(errp, "TLS can only be used over TCP socket");
3674 return;
3675 }
dafd325d
PM		 3676 }
3677
f194a1ae
EB		 3678 sock = backend->u.socket = g_new0(ChardevSocket, 1);
3679 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3680
f194a1ae
EB		 3681 sock->has_nodelay = true;
3682 sock->nodelay = do_nodelay;
3683 sock->has_server = true;
3684 sock->server = is_listen;
3685 sock->has_telnet = true;
3686 sock->telnet = is_telnet;
3687 sock->has_wait = true;
3688 sock->wait = is_waitconnect;
3689 sock->has_reconnect = true;
3690 sock->reconnect = reconnect;
3691 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3692
3693 addr = g_new0(SocketAddress, 1);
3694 if (path) {
0399293e 3695 UnixSocketAddress *q_unix;
130257dc 3696 addr->type = SOCKET_ADDRESS_KIND_UNIX;
0399293e
EB		 3697 q_unix = addr->u.q_unix = g_new0(UnixSocketAddress, 1);
3698 q_unix->path = g_strdup(path);
dafd325d 3699 } else {
130257dc 3700 addr->type = SOCKET_ADDRESS_KIND_INET;
0399293e
EB		 3701 addr->u.inet = g_new(InetSocketAddress, 1);
3702 *addr->u.inet = (InetSocketAddress) {
3703 .host = g_strdup(host),
3704 .port = g_strdup(port),
3705 .has_to = qemu_opt_get(opts, "to"),
3706 .to = qemu_opt_get_number(opts, "to", 0),
3707 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3708 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3709 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3710 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3711 };
dafd325d 3712 }
f194a1ae 3713 sock->addr = addr;
dafd325d
PM		 3714}
3715
90a14bfe
PM		 3716static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3717 Error **errp)
3718{
3719 const char *host = qemu_opt_get(opts, "host");
3720 const char *port = qemu_opt_get(opts, "port");
3721 const char *localaddr = qemu_opt_get(opts, "localaddr");
3722 const char *localport = qemu_opt_get(opts, "localport");
3723 bool has_local = false;
3724 SocketAddress *addr;
f194a1ae 3725 ChardevUdp *udp;
90a14bfe
PM		 3726
3727 if (host == NULL || strlen(host) == 0) {
3728 host = "localhost";
3729 }
3730 if (port == NULL || strlen(port) == 0) {
3731 error_setg(errp, "chardev: udp: remote port not specified");
3732 return;
3733 }
3734 if (localport == NULL || strlen(localport) == 0) {
3735 localport = "0";
3736 } else {
3737 has_local = true;
3738 }
3739 if (localaddr == NULL || strlen(localaddr) == 0) {
3740 localaddr = "";
3741 } else {
3742 has_local = true;
3743 }
3744
f194a1ae
EB		 3745 udp = backend->u.udp = g_new0(ChardevUdp, 1);
3746 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3747
3748 addr = g_new0(SocketAddress, 1);
130257dc 3749 addr->type = SOCKET_ADDRESS_KIND_INET;
0399293e
EB		 3750 addr->u.inet = g_new(InetSocketAddress, 1);
3751 *addr->u.inet = (InetSocketAddress) {
3752 .host = g_strdup(host),
3753 .port = g_strdup(port),
3754 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3755 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3756 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3757 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3758 };
f194a1ae 3759 udp->remote = addr;
90a14bfe
PM		 3760
3761 if (has_local) {
f194a1ae 3762 udp->has_local = true;
90a14bfe 3763 addr = g_new0(SocketAddress, 1);
130257dc 3764 addr->type = SOCKET_ADDRESS_KIND_INET;
0399293e
EB		 3765 addr->u.inet = g_new(InetSocketAddress, 1);
3766 *addr->u.inet = (InetSocketAddress) {
3767 .host = g_strdup(localaddr),
3768 .port = g_strdup(localport),
3769 };
f194a1ae 3770 udp->local = addr;
90a14bfe
PM		 3771 }
3772}
3773
d654f34e 3774typedef struct CharDriver {
191bc01b 3775 const char *name;
99aec012 3776 ChardevBackendKind kind;
2c5f4882 3777 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3778 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3779 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3780} CharDriver;
3781
3782static GSList *backends;
3783
e4d50d47 3784void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3785 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3786 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3787 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3788{
3789 CharDriver *s;
3790
3791 s = g_malloc0(sizeof(*s));
3792 s->name = g_strdup(name);
3793 s->kind = kind;
3794 s->parse = parse;
4ca17281 3795 s->create = create;
2c5f4882
GH		 3796
3797 backends = g_slist_append(backends, s);
3798}
3799
f69554b9 3800CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3801 void (*init)(struct CharDriverState *s),
3802 Error **errp)
191bc01b 3803{
0aff637e 3804 Error *local_err = NULL;
d654f34e 3805 CharDriver *cd;
191bc01b 3806 CharDriverState *chr;
d654f34e 3807 GSList *i;
a61ae7f8
PM		 3808 ChardevReturn *ret = NULL;
3809 ChardevBackend *backend;
3810 const char *id = qemu_opts_id(opts);
3811 char *bid = NULL;
191bc01b 3812
a61ae7f8 3813 if (id == NULL) {
312fd5f2 3814 error_setg(errp, "chardev: no id specified");
2274ae9d 3815 goto err;
191bc01b
GH		 3816 }
3817
1bbd185f 3818 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3819 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3820 qemu_opts_id(opts));
2274ae9d 3821 goto err;
1bbd185f 3822 }
d654f34e
AL		 3823 for (i = backends; i; i = i->next) {
3824 cd = i->data;
3825
3826 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3827 break;
d654f34e 3828 }
191bc01b 3829 }
d654f34e 3830 if (i == NULL) {
312fd5f2 3831 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3832 qemu_opt_get(opts, "backend"));
e668287d 3833 goto err;
191bc01b
GH		 3834 }
3835
a61ae7f8 3836 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3837
a61ae7f8
PM		 3838 if (qemu_opt_get_bool(opts, "mux", 0)) {
3839 bid = g_strdup_printf("%s-base", id);
3840 }
2c5f4882 3841
a61ae7f8 3842 chr = NULL;
130257dc 3843 backend->type = cd->kind;
a61ae7f8
PM		 3844 if (cd->parse) {
3845 cd->parse(opts, backend, &local_err);
3846 if (local_err) {
3847 error_propagate(errp, local_err);
2c5f4882
GH		 3848 goto qapi_out;
3849 }
d0d7708b
DB		 3850 } else {
3851 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3852 qemu_chr_parse_common(opts, cc);
b1918fbb 3853 backend->u.null = cc; /* Any ChardevCommon member would work */
2c5f4882 3854 }
d0d7708b 3855
a61ae7f8
PM		 3856 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3857 if (!ret) {
3858 goto qapi_out;
191bc01b
GH		 3859 }
3860
a61ae7f8
PM		 3861 if (bid) {
3862 qapi_free_ChardevBackend(backend);
3863 qapi_free_ChardevReturn(ret);
3864 backend = g_new0(ChardevBackend, 1);
130257dc
EB		 3865 backend->u.mux = g_new0(ChardevMux, 1);
3866 backend->type = CHARDEV_BACKEND_KIND_MUX;
3867 backend->u.mux->chardev = g_strdup(bid);
a61ae7f8
PM		 3868 ret = qmp_chardev_add(id, backend, errp);
3869 if (!ret) {
3870 chr = qemu_chr_find(bid);
3871 qemu_chr_delete(chr);
3872 chr = NULL;
3873 goto qapi_out;
3874 }
bd5c51ee 3875 }
7591c5c1 3876
a61ae7f8 3877 chr = qemu_chr_find(id);
2274ae9d 3878 chr->opts = opts;
a61ae7f8
PM		 3879
3880qapi_out:
3881 qapi_free_ChardevBackend(backend);
3882 qapi_free_ChardevReturn(ret);
3883 g_free(bid);
191bc01b 3884 return chr;
2274ae9d
GH		 3885
3886err:
3887 qemu_opts_del(opts);
3888 return NULL;
191bc01b
GH		 3889}
3890
33577b47
PD		 3891CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3892 void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3893{
3894 const char *p;
3895 CharDriverState *chr;
191bc01b 3896 QemuOpts *opts;
bd2d80b2 3897 Error *err = NULL;
191bc01b 3898
c845f401
GH		 3899 if (strstart(filename, "chardev:", &p)) {
3900 return qemu_chr_find(p);
3901 }
3902
191bc01b 3903 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3904 if (!opts)
3905 return NULL;
6f97dba0 3906
bd2d80b2 3907 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3908 if (err) {
565f65d2 3909 error_report_err(err);
bd2d80b2 3910 }
7e1b35b4 3911 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3912 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3913 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3914 }
3915 return chr;
3916}
3917
33577b47
PD		 3918CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3919{
3920 CharDriverState *chr;
3921 chr = qemu_chr_new_noreplay(label, filename, init);
3922 if (chr) {
3923 chr->replay = replay_mode != REPLAY_MODE_NONE;
3924 if (chr->replay && chr->chr_ioctl) {
3925 fprintf(stderr,
3926 "Replay: ioctl is not supported for serial devices yet\n");
3927 }
3928 replay_register_char_driver(chr);
3929 }
3930 return chr;
3931}
3932
15f31519 3933void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3934{
3935 if (chr->chr_set_echo) {
3936 chr->chr_set_echo(chr, echo);
3937 }
3938}
3939
8e25daa8 3940void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3941{
8e25daa8 3942 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3943 return;
3944 }
8e25daa8 3945 chr->fe_open = fe_open;
574b711a
HG		 3946 if (chr->chr_set_fe_open) {
3947 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3948 }
3949}
3950
d61b0c9a
MAL		 3951void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3952{
3953 if (chr->chr_fe_event) {
3954 chr->chr_fe_event(chr, event);
3955 }
3956}
3957
2c8a5942
KW		 3958int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3959 GIOFunc func, void *user_data)
23673ca7
AL		 3960{
3961 GSource *src;
3962 guint tag;
3963
3964 if (s->chr_add_watch == NULL) {
3965 return -ENOSYS;
3966 }
3967
3968 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3969 if (!src) {
3970 return -EINVAL;
3971 }
3972
23673ca7
AL		 3973 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3974 tag = g_source_attach(src, NULL);
3975 g_source_unref(src);
3976
3977 return tag;
3978}
3979
44c473de
HG		 3980int qemu_chr_fe_claim(CharDriverState *s)
3981{
3982 if (s->avail_connections < 1) {
3983 return -1;
3984 }
3985 s->avail_connections--;
3986 return 0;
3987}
3988
3989void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3990{
3991 if (qemu_chr_fe_claim(s) != 0) {
3992 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3993 __func__, s->label);
3994 exit(1);
3995 }
3996}
3997
3998void qemu_chr_fe_release(CharDriverState *s)
3999{
4000 s->avail_connections++;
4001}
4002
d0d7708b 4003static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4004{
7267c094
AL		 4005 g_free(chr->filename);
4006 g_free(chr->label);
4ad60880 4007 qemu_opts_del(chr->opts);
d0d7708b
DB		 4008 if (chr->logfd != -1) {
4009 close(chr->logfd);
4010 }
fefd749c 4011 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4012 g_free(chr);
6f97dba0
AL		 4013}
4014
d0d7708b
DB		 4015void qemu_chr_free(CharDriverState *chr)
4016{
4017 if (chr->chr_close) {
4018 chr->chr_close(chr);
4019 }
4020 qemu_chr_free_common(chr);
4021}
4022
1ad78ea5
MAL		 4023void qemu_chr_delete(CharDriverState *chr)
4024{
4025 QTAILQ_REMOVE(&chardevs, chr, next);
4026 qemu_chr_free(chr);
4027}
4028
c5a415a0 4029ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4030{
c5a415a0 4031 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4032 CharDriverState *chr;
4033
72cf2d4f 4034 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4035 ChardevInfoList *info = g_malloc0(sizeof(*info));
4036 info->value = g_malloc0(sizeof(*info->value));
4037 info->value->label = g_strdup(chr->label);
4038 info->value->filename = g_strdup(chr->filename);
32a97ea1 4039 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4040
4041 info->next = chr_list;
4042 chr_list = info;
6f97dba0 4043 }
588b3832 4044
c5a415a0 4045 return chr_list;
6f97dba0 4046}
c845f401 4047
77d1c3c6
MK		 4048ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4049{
4050 ChardevBackendInfoList *backend_list = NULL;
4051 CharDriver *c = NULL;
4052 GSList *i = NULL;
4053
4054 for (i = backends; i; i = i->next) {
4055 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4056 c = i->data;
4057 info->value = g_malloc0(sizeof(*info->value));
4058 info->value->name = g_strdup(c->name);
4059
4060 info->next = backend_list;
4061 backend_list = info;
4062 }
4063
4064 return backend_list;
4065}
4066
c845f401
GH		 4067CharDriverState *qemu_chr_find(const char *name)
4068{
4069 CharDriverState *chr;
4070
72cf2d4f 4071 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4072 if (strcmp(chr->label, name) != 0)
4073 continue;
4074 return chr;
4075 }
4076 return NULL;
4077}
0beb4942
AL		 4078
4079/* Get a character (serial) device interface. */
4080CharDriverState *qemu_char_get_next_serial(void)
4081{
4082 static int next_serial;
456d6069 4083 CharDriverState *chr;
0beb4942
AL		 4084
4085 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 4086
4087 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4088 chr = serial_hds[next_serial++];
4089 qemu_chr_fe_claim_no_fail(chr);
4090 return chr;
4091 }
4092 return NULL;
0beb4942
AL		 4093}
4094
4d454574
PB		 4095QemuOptsList qemu_chardev_opts = {
4096 .name = "chardev",
4097 .implied_opt_name = "backend",
4098 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4099 .desc = {
4100 {
4101 .name = "backend",
4102 .type = QEMU_OPT_STRING,
4103 },{
4104 .name = "path",
4105 .type = QEMU_OPT_STRING,
4106 },{
4107 .name = "host",
4108 .type = QEMU_OPT_STRING,
4109 },{
4110 .name = "port",
4111 .type = QEMU_OPT_STRING,
4112 },{
4113 .name = "localaddr",
4114 .type = QEMU_OPT_STRING,
4115 },{
4116 .name = "localport",
4117 .type = QEMU_OPT_STRING,
4118 },{
4119 .name = "to",
4120 .type = QEMU_OPT_NUMBER,
4121 },{
4122 .name = "ipv4",
4123 .type = QEMU_OPT_BOOL,
4124 },{
4125 .name = "ipv6",
4126 .type = QEMU_OPT_BOOL,
4127 },{
4128 .name = "wait",
4129 .type = QEMU_OPT_BOOL,
4130 },{
4131 .name = "server",
4132 .type = QEMU_OPT_BOOL,
4133 },{
4134 .name = "delay",
4135 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4136 },{
4137 .name = "reconnect",
4138 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4139 },{
4140 .name = "telnet",
4141 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4142 },{
4143 .name = "tls-creds",
4144 .type = QEMU_OPT_STRING,
4d454574
PB		 4145 },{
4146 .name = "width",
4147 .type = QEMU_OPT_NUMBER,
4148 },{
4149 .name = "height",
4150 .type = QEMU_OPT_NUMBER,
4151 },{
4152 .name = "cols",
4153 .type = QEMU_OPT_NUMBER,
4154 },{
4155 .name = "rows",
4156 .type = QEMU_OPT_NUMBER,
4157 },{
4158 .name = "mux",
4159 .type = QEMU_OPT_BOOL,
4160 },{
4161 .name = "signal",
4162 .type = QEMU_OPT_BOOL,
4163 },{
4164 .name = "name",
4165 .type = QEMU_OPT_STRING,
4166 },{
4167 .name = "debug",
4168 .type = QEMU_OPT_NUMBER,
51767e7c 4169 },{
3949e594 4170 .name = "size",
de1cc36e 4171 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4172 },{
4173 .name = "chardev",
4174 .type = QEMU_OPT_STRING,
31e38a22
OK		 4175 },{
4176 .name = "append",
4177 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4178 },{
4179 .name = "logfile",
4180 .type = QEMU_OPT_STRING,
4181 },{
4182 .name = "logappend",
4183 .type = QEMU_OPT_BOOL,
4d454574
PB		 4184 },
4185 { /* end of list */ }
4186 },
4187};
f1a1a356 4188
ffbdbe59
GH		 4189#ifdef _WIN32
4190
fd5b036c
PB		 4191static CharDriverState *qmp_chardev_open_file(const char *id,
4192 ChardevBackend *backend,
4193 ChardevReturn *ret,
4194 Error **errp)
ffbdbe59 4195{
130257dc 4196 ChardevFile *file = backend->u.file;
f194a1ae 4197 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59
GH		 4198 HANDLE out;
4199
e859eda5 4200 if (file->has_in) {
ffbdbe59
GH		 4201 error_setg(errp, "input file not supported");
4202 return NULL;
4203 }
4204
4205 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4206 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4207 if (out == INVALID_HANDLE_VALUE) {
4208 error_setg(errp, "open %s failed", file->out);
4209 return NULL;
4210 }
d0d7708b 4211 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4212}
4213
6511d396
PB		 4214static CharDriverState *qmp_chardev_open_serial(const char *id,
4215 ChardevBackend *backend,
4216 ChardevReturn *ret,
d36b2b90 4217 Error **errp)
d59044ef 4218{
130257dc 4219 ChardevHostdev *serial = backend->u.serial;
f194a1ae 4220 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4221 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4222}
4223
ffbdbe59
GH		 4224#else /* WIN32 */
4225
4226static int qmp_chardev_open_file_source(char *src, int flags,
4227 Error **errp)
4228{
4229 int fd = -1;
4230
4231 TFR(fd = qemu_open(src, flags, 0666));
4232 if (fd == -1) {
20c39760 4233 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4234 }
4235 return fd;
4236}
4237
fd5b036c
PB		 4238static CharDriverState *qmp_chardev_open_file(const char *id,
4239 ChardevBackend *backend,
4240 ChardevReturn *ret,
4241 Error **errp)
ffbdbe59 4242{
130257dc 4243 ChardevFile *file = backend->u.file;
f194a1ae 4244 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4245 int flags, in = -1, out;
ffbdbe59 4246
31e38a22
OK		 4247 flags = O_WRONLY | O_CREAT | O_BINARY;
4248 if (file->has_append && file->append) {
4249 flags |= O_APPEND;
4250 } else {
4251 flags |= O_TRUNC;
4252 }
4253
ffbdbe59 4254 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4255 if (out < 0) {
ffbdbe59
GH		 4256 return NULL;
4257 }
4258
e859eda5 4259 if (file->has_in) {
ffbdbe59
GH		 4260 flags = O_RDONLY;
4261 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4262 if (in < 0) {
ffbdbe59
GH		 4263 qemu_close(out);
4264 return NULL;
4265 }
4266 }
4267
d0d7708b 4268 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4269}
4270
d809ab95 4271#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4272static CharDriverState *qmp_chardev_open_serial(const char *id,
4273 ChardevBackend *backend,
4274 ChardevReturn *ret,
d36b2b90 4275 Error **errp)
d59044ef 4276{
130257dc 4277 ChardevHostdev *serial = backend->u.serial;
f194a1ae 4278 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4279 int fd;
4280
4281 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4282 if (fd < 0) {
d36b2b90 4283 return NULL;
39099991 4284 }
f9e8cacc 4285 qemu_set_nonblock(fd);
d0d7708b 4286 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4287}
6511d396 4288#endif
d36b2b90 4289
d809ab95 4290#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4291static CharDriverState *qmp_chardev_open_parallel(const char *id,
4292 ChardevBackend *backend,
4293 ChardevReturn *ret,
d36b2b90
MA		 4294 Error **errp)
4295{
130257dc 4296 ChardevHostdev *parallel = backend->u.parallel;
f194a1ae 4297 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4298 int fd;
4299
4300 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4301 if (fd < 0) {
d59044ef
GH		 4302 return NULL;
4303 }
d0d7708b 4304 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4305}
d809ab95 4306#endif
d59044ef 4307
ffbdbe59
GH		 4308#endif /* WIN32 */
4309
5dd1f02b
CM		 4310static gboolean socket_reconnect_timeout(gpointer opaque)
4311{
4312 CharDriverState *chr = opaque;
4313 TCPCharDriver *s = chr->opaque;
317856ca 4314 QIOChannelSocket *sioc;
5dd1f02b
CM		 4315
4316 s->reconnect_timer = 0;
4317
4318 if (chr->be_open) {
4319 return false;
4320 }
4321
317856ca
DB		 4322 sioc = qio_channel_socket_new();
4323 qio_channel_socket_connect_async(sioc, s->addr,
4324 qemu_chr_socket_connected,
4325 chr, NULL);
5dd1f02b
CM		 4326
4327 return false;
4328}
4329
dbba8d1b
PB		 4330static CharDriverState *qmp_chardev_open_socket(const char *id,
4331 ChardevBackend *backend,
4332 ChardevReturn *ret,
f6bd5d6e
GH		 4333 Error **errp)
4334{
43ded1a0
CM		 4335 CharDriverState *chr;
4336 TCPCharDriver *s;
130257dc 4337 ChardevSocket *sock = backend->u.socket;
f6bd5d6e
GH		 4338 SocketAddress *addr = sock->addr;
4339 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4340 bool is_listen = sock->has_server ? sock->server : true;
4341 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4342 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4343 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4344 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4345 QIOChannelSocket *sioc = NULL;
43ded1a0 4346
d0d7708b
DB		 4347 chr = qemu_chr_alloc(common, errp);
4348 if (!chr) {
4349 return NULL;
4350 }
2d528d45 4351 s = g_new0(TCPCharDriver, 1);
43ded1a0 4352
130257dc 4353 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4354 s->is_listen = is_listen;
4355 s->is_telnet = is_telnet;
43ded1a0 4356 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4357 if (sock->tls_creds) {
4358 Object *creds;
4359 creds = object_resolve_path_component(
4360 object_get_objects_root(), sock->tls_creds);
4361 if (!creds) {
4362 error_setg(errp, "No TLS credentials with id '%s'",
4363 sock->tls_creds);
4364 goto error;
4365 }
4366 s->tls_creds = (QCryptoTLSCreds *)
4367 object_dynamic_cast(creds,
4368 TYPE_QCRYPTO_TLS_CREDS);
4369 if (!s->tls_creds) {
4370 error_setg(errp, "Object with id '%s' is not TLS credentials",
4371 sock->tls_creds);
4372 goto error;
4373 }
4374 object_ref(OBJECT(s->tls_creds));
4375 if (is_listen) {
4376 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4377 error_setg(errp, "%s",
4378 "Expected TLS credentials for server endpoint");
4379 goto error;
4380 }
4381 } else {
4382 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4383 error_setg(errp, "%s",
4384 "Expected TLS credentials for client endpoint");
4385 goto error;
4386 }
4387 }
4388 }
4389
cfb429cb 4390 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4391
4392 chr->opaque = s;
4393 chr->chr_write = tcp_chr_write;
4394 chr->chr_sync_read = tcp_chr_sync_read;
4395 chr->chr_close = tcp_chr_close;
4396 chr->get_msgfds = tcp_get_msgfds;
4397 chr->set_msgfds = tcp_set_msgfds;
4398 chr->chr_add_client = tcp_chr_add_client;
4399 chr->chr_add_watch = tcp_chr_add_watch;
4400 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4401 /* be isn't opened until we get a connection */
4402 chr->explicit_be_open = true;
4403
0ff0fad2
DB		 4404 chr->filename = SocketAddress_to_str("disconnected:",
4405 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4406
4407 if (is_listen) {
43ded1a0
CM		 4408 if (is_telnet) {
4409 s->do_telnetopt = 1;
4410 }
5dd1f02b
CM		 4411 } else if (reconnect > 0) {
4412 s->reconnect_time = reconnect;
f6bd5d6e 4413 }
43ded1a0 4414
08b758b4 4415 sioc = qio_channel_socket_new();
5008e5b7 4416 if (s->reconnect_time) {
317856ca
DB		 4417 qio_channel_socket_connect_async(sioc, s->addr,
4418 qemu_chr_socket_connected,
4419 chr, NULL);
08b758b4
DB		 4420 } else if (s->is_listen) {
4421 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4422 goto error;
4423 }
4424 s->listen_ioc = sioc;
4425 if (is_waitconnect) {
4426 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4427 chr->filename);
4428 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4429 }
9894dc0c 4430 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
08b758b4
DB		 4431 if (!s->ioc) {
4432 s->listen_tag = qio_channel_add_watch(
4433 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
4434 }
4435 } else {
4436 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
4437 goto error;
4438 }
4439 tcp_chr_new_client(chr, sioc);
4440 object_unref(OBJECT(sioc));
43ded1a0
CM		 4441 }
4442
4443 return chr;
a8fb5427
DB		 4444
4445 error:
08b758b4
DB		 4446 if (sioc) {
4447 object_unref(OBJECT(sioc));
4448 }
a8fb5427
DB		 4449 if (s->tls_creds) {
4450 object_unref(OBJECT(s->tls_creds));
4451 }
4452 g_free(s);
4453 qemu_chr_free_common(chr);
4454 return NULL;
f6bd5d6e
GH		 4455}
4456
e79b80da
PB		 4457static CharDriverState *qmp_chardev_open_udp(const char *id,
4458 ChardevBackend *backend,
4459 ChardevReturn *ret,
08d0ab3f 4460 Error **errp)
3ecc059d 4461{
130257dc 4462 ChardevUdp *udp = backend->u.udp;
f194a1ae 4463 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4464 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4465
9894dc0c 4466 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4467 udp->local, udp->remote,
9894dc0c
DB		 4468 errp) < 0) {
4469 object_unref(OBJECT(sioc));
3ecc059d
GH		 4470 return NULL;
4471 }
9894dc0c 4472 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4473}
4474
f1a1a356
GH		 4475ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4476 Error **errp)
4477{
4478 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4479 CharDriverState *chr = NULL;
eaeba653 4480 Error *local_err = NULL;
4ca17281
PB		 4481 GSList *i;
4482 CharDriver *cd;
f1a1a356
GH		 4483
4484 chr = qemu_chr_find(id);
4485 if (chr) {
4486 error_setg(errp, "Chardev '%s' already exists", id);
4487 g_free(ret);
4488 return NULL;
4489 }
4490
4ca17281
PB		 4491 for (i = backends; i; i = i->next) {
4492 cd = i->data;
4493
130257dc 4494 if (cd->kind == backend->type) {
4ca17281
PB		 4495 chr = cd->create(id, backend, ret, &local_err);
4496 if (local_err) {
4497 error_propagate(errp, local_err);
4498 goto out_error;
4499 }
4500 break;
4501 }
4502 }
4503
4504 if (chr == NULL) {
1c3af0f4
PB		 4505 assert(!i);
4506 error_setg(errp, "chardev backend not available");
4507 goto out_error;
eaeba653
PB		 4508 }
4509
4510 chr->label = g_strdup(id);
4511 chr->avail_connections =
130257dc 4512 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4513 if (!chr->filename) {
130257dc 4514 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4515 }
eaeba653
PB		 4516 if (!chr->explicit_be_open) {
4517 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4518 }
4519 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4520 return ret;
4521
4522out_error:
4523 g_free(ret);
4524 return NULL;
f1a1a356
GH		 4525}
4526
4527void qmp_chardev_remove(const char *id, Error **errp)
4528{
4529 CharDriverState *chr;
4530
4531 chr = qemu_chr_find(id);
8108fd3e 4532 if (chr == NULL) {
f1a1a356
GH		 4533 error_setg(errp, "Chardev '%s' not found", id);
4534 return;
4535 }
4536 if (chr->chr_can_read || chr->chr_read ||
4537 chr->chr_event || chr->handler_opaque) {
4538 error_setg(errp, "Chardev '%s' is busy", id);
4539 return;
4540 }
33577b47
PD		 4541 if (chr->replay) {
4542 error_setg(errp,
4543 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4544 return;
4545 }
f1a1a356
GH		 4546 qemu_chr_delete(chr);
4547}
d654f34e
AL		 4548
4549static void register_types(void)
4550{
4ca17281 4551 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4552 qemu_chr_open_null);
e4d50d47 4553 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4554 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4555 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4556 qmp_chardev_open_udp);
e4d50d47 4557 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4558 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4559 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4560 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4561 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4562 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4563#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4564 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4565 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4566 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4567 qemu_chr_parse_serial, qmp_chardev_open_serial);
4568#endif
38bfb1a6 4569#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4570 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4571 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4572 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4573 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4574#endif
c2e75a43 4575#ifdef HAVE_CHARDEV_PTY
4ca17281 4576 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4577 qemu_chr_open_pty);
4578#endif
122e5ed4 4579#ifdef _WIN32
4ca17281 4580 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4581 qemu_chr_open_win_con);
4582#endif
e4d50d47 4583 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4584 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4585 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4586 qemu_chr_open_mux);
c11ed966 4587 /* Bug-compatibility: */
e4d50d47 4588 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4589 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4590 /* this must be done after machine init, since we register FEs with muxes
4591 * as part of realize functions like serial_isa_realizefn when -nographic
4592 * is specified
4593 */
4594 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4595}
4596
4597type_init(register_types);
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