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qapi: Drop unused c_null()
[qemu.git] / qemu-char.c
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6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
83c9089e 26#include "monitor/monitor.h"
9c17d615 27#include "sysemu/sysemu.h"
da31d594 28#include "sysemu/block-backend.h"
d49b6836 29#include "qemu/error-report.h"
1de7afc9 30#include "qemu/timer.h"
dccfcd0e 31#include "sysemu/char.h"
cf3ebac7 32#include "hw/usb.h"
c5a415a0 33#include "qmp-commands.h"
cfb429cb
CM		 34#include "qapi/qmp-input-visitor.h"
35#include "qapi/qmp-output-visitor.h"
36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
6f97dba0 42
6f97dba0
AL		 43#include <zlib.h>
44
45#ifndef _WIN32
46#include <sys/times.h>
47#include <sys/wait.h>
48#include <termios.h>
49#include <sys/mman.h>
50#include <sys/ioctl.h>
24646c7e 51#include <sys/resource.h>
6f97dba0
AL		 52#include <sys/socket.h>
53#include <netinet/in.h>
24646c7e 54#include <net/if.h>
24646c7e 55#include <arpa/inet.h>
6f97dba0
AL		 56#include <netdb.h>
57#include <sys/select.h>
71e72a19 58#ifdef CONFIG_BSD
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
6f97dba0
AL		 72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
c4095726 90#define TCP_MAX_FDS 16
9bd7854e 91
cfb429cb
CM		 92/***********************************************************/
93/* Socket address helpers */
cfb429cb 94
0ff0fad2
DB		 95static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
96 bool is_listen, bool is_telnet)
16cc4ffe 97{
130257dc 98 switch (addr->type) {
16cc4ffe 99 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2
DB		 100 return g_strdup_printf("%s%s:%s:%s%s", prefix,
101 is_telnet ? "telnet" : "tcp", addr->u.inet->host,
102 addr->u.inet->port, is_listen ? ",server" : "");
16cc4ffe
CM		 103 break;
104 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2
DB		 105 return g_strdup_printf("%sunix:%s%s", prefix,
106 addr->u.q_unix->path,
107 is_listen ? ",server" : "");
16cc4ffe
CM		 108 break;
109 case SOCKET_ADDRESS_KIND_FD:
0ff0fad2
DB		 110 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd->str,
111 is_listen ? ",server" : "");
16cc4ffe
CM		 112 break;
113 default:
114 abort();
115 }
116}
117
0ff0fad2
DB		 118static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
119 struct sockaddr_storage *ps, socklen_t ps_len,
120 bool is_listen, bool is_telnet)
16cc4ffe 121{
01ca519f
CM		 122 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
123 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 124 const char *left = "", *right = "";
125
126 switch (ss->ss_family) {
127#ifndef _WIN32
128 case AF_UNIX:
0ff0fad2
DB		 129 return g_strdup_printf("unix:%s%s",
130 ((struct sockaddr_un *)(ss))->sun_path,
131 is_listen ? ",server" : "");
16cc4ffe
CM		 132#endif
133 case AF_INET6:
134 left = "[";
135 right = "]";
136 /* fall through */
137 case AF_INET:
01ca519f
CM		 138 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
139 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
140 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
141 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 142 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
143 is_telnet ? "telnet" : "tcp",
144 left, shost, right, sserv,
145 is_listen ? ",server" : "",
146 left, phost, right, pserv);
16cc4ffe
CM		 147
148 default:
0ff0fad2 149 return g_strdup_printf("unknown");
16cc4ffe
CM		 150 }
151}
152
6f97dba0
AL		 153/***********************************************************/
154/* character device */
155
72cf2d4f
BS		 156static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
157 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 158
d0d7708b
DB		 159static void qemu_chr_free_common(CharDriverState *chr);
160
161CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 162{
163 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 164 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 165
166 if (backend->has_logfile) {
167 int flags = O_WRONLY | O_CREAT;
168 if (backend->has_logappend &&
169 backend->logappend) {
170 flags |= O_APPEND;
171 } else {
172 flags |= O_TRUNC;
173 }
174 chr->logfd = qemu_open(backend->logfile, flags, 0666);
175 if (chr->logfd < 0) {
176 error_setg_errno(errp, errno,
177 "Unable to open logfile %s",
178 backend->logfile);
179 g_free(chr);
180 return NULL;
181 }
182 } else {
183 chr->logfd = -1;
184 }
185
db39fcf1
PB		 186 return chr;
187}
188
a425d23f 189void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 190{
73cdf3f2
AG		 191 /* Keep track if the char device is open */
192 switch (event) {
193 case CHR_EVENT_OPENED:
16665b94 194 s->be_open = 1;
73cdf3f2
AG		 195 break;
196 case CHR_EVENT_CLOSED:
16665b94 197 s->be_open = 0;
73cdf3f2
AG		 198 break;
199 }
200
6f97dba0
AL		 201 if (!s->chr_event)
202 return;
203 s->chr_event(s->handler_opaque, event);
204}
205
fee204fd 206void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 207{
bd5c51ee 208 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 209}
210
d0d7708b
DB		 211
212/* Not reporting errors from writing to logfile, as logs are
213 * defined to be "best effort" only */
214static void qemu_chr_fe_write_log(CharDriverState *s,
215 const uint8_t *buf, size_t len)
216{
217 size_t done = 0;
218 ssize_t ret;
219
220 if (s->logfd < 0) {
221 return;
222 }
223
224 while (done < len) {
225 do {
226 ret = write(s->logfd, buf + done, len - done);
227 if (ret == -1 && errno == EAGAIN) {
228 g_usleep(100);
229 }
230 } while (ret == -1 && errno == EAGAIN);
231
232 if (ret <= 0) {
233 return;
234 }
235 done += ret;
236 }
237}
238
33577b47
PD		 239static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
240{
241 int res = 0;
242 *offset = 0;
243
244 qemu_mutex_lock(&s->chr_write_lock);
245 while (*offset < len) {
246 do {
247 res = s->chr_write(s, buf + *offset, len - *offset);
248 if (res == -1 && errno == EAGAIN) {
249 g_usleep(100);
250 }
251 } while (res == -1 && errno == EAGAIN);
252
253 if (res <= 0) {
254 break;
255 }
256
257 *offset += res;
258 }
259 if (*offset > 0) {
260 qemu_chr_fe_write_log(s, buf, *offset);
261 }
262 qemu_mutex_unlock(&s->chr_write_lock);
263
264 return res;
265}
266
2cc6e0a1 267int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 268{
9005b2a7
PB		 269 int ret;
270
33577b47
PD		 271 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
272 int offset;
273 replay_char_write_event_load(&ret, &offset);
274 assert(offset <= len);
275 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
276 return ret;
277 }
278
9005b2a7
PB		 279 qemu_mutex_lock(&s->chr_write_lock);
280 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 281
282 if (ret > 0) {
283 qemu_chr_fe_write_log(s, buf, ret);
284 }
285
9005b2a7 286 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 287
288 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
289 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
290 }
291
9005b2a7 292 return ret;
6f97dba0
AL		 293}
294
cd18720a
AL		 295int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
296{
33577b47
PD		 297 int offset;
298 int res;
cd18720a 299
33577b47
PD		 300 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
301 replay_char_write_event_load(&res, &offset);
302 assert(offset <= len);
303 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
304 return res;
305 }
cd18720a 306
33577b47 307 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 308
33577b47
PD		 309 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
310 replay_char_write_event_save(res, offset);
cd18720a
AL		 311 }
312
9005b2a7
PB		 313 if (res < 0) {
314 return res;
315 }
cd18720a
AL		 316 return offset;
317}
318
7b0bfdf5
NN		 319int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
320{
321 int offset = 0, counter = 10;
322 int res;
323
324 if (!s->chr_sync_read) {
325 return 0;
326 }
33577b47
PD		 327
328 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
329 return replay_char_read_all_load(buf);
330 }
7b0bfdf5
NN		 331
332 while (offset < len) {
333 do {
334 res = s->chr_sync_read(s, buf + offset, len - offset);
335 if (res == -1 && errno == EAGAIN) {
336 g_usleep(100);
337 }
338 } while (res == -1 && errno == EAGAIN);
339
340 if (res == 0) {
341 break;
342 }
343
344 if (res < 0) {
33577b47
PD		 345 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
346 replay_char_read_all_save_error(res);
347 }
7b0bfdf5
NN		 348 return res;
349 }
350
351 offset += res;
352
353 if (!counter--) {
354 break;
355 }
356 }
357
33577b47
PD		 358 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
359 replay_char_read_all_save_buf(buf, offset);
360 }
7b0bfdf5
NN		 361 return offset;
362}
363
41084f1b 364int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0 365{
33577b47
PD		 366 int res;
367 if (!s->chr_ioctl || s->replay) {
368 res = -ENOTSUP;
369 } else {
370 res = s->chr_ioctl(s, cmd, arg);
371 }
372
373 return res;
6f97dba0
AL		 374}
375
909cda12 376int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 377{
378 if (!s->chr_can_read)
379 return 0;
380 return s->chr_can_read(s->handler_opaque);
381}
382
33577b47 383void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 384{
ac310734
SW		 385 if (s->chr_read) {
386 s->chr_read(s->handler_opaque, buf, len);
387 }
6f97dba0
AL		 388}
389
33577b47
PD		 390void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
391{
392 if (s->replay) {
393 if (replay_mode == REPLAY_MODE_PLAY) {
394 return;
395 }
396 replay_chr_be_write(s, buf, len);
397 } else {
398 qemu_chr_be_write_impl(s, buf, len);
399 }
400}
401
74c0d6f0 402int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 403{
c76bf6bb 404 int fd;
33577b47
PD		 405 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
406 if (s->replay) {
407 fprintf(stderr,
408 "Replay: get msgfd is not supported for serial devices yet\n");
409 exit(1);
410 }
411 return res;
c76bf6bb
NN		 412}
413
414int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
415{
416 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 417}
418
d39aac7a
NN		 419int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
420{
421 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
422}
423
13661089
DB		 424int qemu_chr_add_client(CharDriverState *s, int fd)
425{
426 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
427}
428
6f97dba0
AL		 429void qemu_chr_accept_input(CharDriverState *s)
430{
431 if (s->chr_accept_input)
432 s->chr_accept_input(s);
98c8ee1d 433 qemu_notify_event();
6f97dba0
AL		 434}
435
e7e71b0e 436void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 437{
9bd7854e 438 char buf[READ_BUF_LEN];
6f97dba0
AL		 439 va_list ap;
440 va_start(ap, fmt);
441 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 442 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 443 va_end(ap);
444}
445
386a5a1e
AS		 446static void remove_fd_in_watch(CharDriverState *chr);
447
6f97dba0 448void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 449 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 450 IOReadHandler *fd_read,
451 IOEventHandler *fd_event,
452 void *opaque)
453{
19083228
HG		 454 int fe_open;
455
da7d998b 456 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 457 fe_open = 0;
386a5a1e 458 remove_fd_in_watch(s);
19083228
HG		 459 } else {
460 fe_open = 1;
2d6c1ef4 461 }
6f97dba0
AL		 462 s->chr_can_read = fd_can_read;
463 s->chr_read = fd_read;
464 s->chr_event = fd_event;
465 s->handler_opaque = opaque;
ac1b84dd 466 if (fe_open && s->chr_update_read_handler)
6f97dba0 467 s->chr_update_read_handler(s);
73cdf3f2 468
19083228 469 if (!s->explicit_fe_open) {
8e25daa8 470 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 471 }
472
73cdf3f2
AG		 473 /* We're connecting to an already opened device, so let's make sure we
474 also get the open event */
a59bcd31 475 if (fe_open && s->be_open) {
fee204fd 476 qemu_chr_be_generic_open(s);
73cdf3f2 477 }
6f97dba0
AL		 478}
479
480static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
481{
482 return len;
483}
484
0d64992b
PB		 485static CharDriverState *qemu_chr_open_null(const char *id,
486 ChardevBackend *backend,
487 ChardevReturn *ret,
488 Error **errp)
6f97dba0
AL		 489{
490 CharDriverState *chr;
b1918fbb 491 ChardevCommon *common = backend->u.null;
6f97dba0 492
d0d7708b
DB		 493 chr = qemu_chr_alloc(common, errp);
494 if (!chr) {
495 return NULL;
496 }
6f97dba0 497 chr->chr_write = null_chr_write;
bd5c51ee 498 chr->explicit_be_open = true;
1f51470d 499 return chr;
6f97dba0
AL		 500}
501
502/* MUX driver for serial I/O splitting */
6f97dba0
AL		 503#define MAX_MUX 4
504#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
505#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
506typedef struct {
7b27a769 507 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 508 IOReadHandler *chr_read[MAX_MUX];
509 IOEventHandler *chr_event[MAX_MUX];
510 void *ext_opaque[MAX_MUX];
511 CharDriverState *drv;
799f1f23 512 int focus;
6f97dba0
AL		 513 int mux_cnt;
514 int term_got_escape;
515 int max_size;
a80bf99f
AL		 516 /* Intermediate input buffer allows to catch escape sequences even if the
517 currently active device is not accepting any input - but only until it
518 is full as well. */
519 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
520 int prod[MAX_MUX];
521 int cons[MAX_MUX];
2d22959d 522 int timestamps;
9005b2a7
PB		 523
524 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 525 int linestart;
2d22959d 526 int64_t timestamps_start;
6f97dba0
AL		 527} MuxDriver;
528
529
9005b2a7 530/* Called with chr_write_lock held. */
6f97dba0
AL		 531static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
532{
533 MuxDriver *d = chr->opaque;
534 int ret;
2d22959d 535 if (!d->timestamps) {
6975b713 536 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 537 } else {
538 int i;
539
540 ret = 0;
4ab312f7
JK		 541 for (i = 0; i < len; i++) {
542 if (d->linestart) {
6f97dba0
AL		 543 char buf1[64];
544 int64_t ti;
545 int secs;
546
bc72ad67 547 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 548 if (d->timestamps_start == -1)
549 d->timestamps_start = ti;
550 ti -= d->timestamps_start;
a4bb1db8 551 secs = ti / 1000;
6f97dba0
AL		 552 snprintf(buf1, sizeof(buf1),
553 "[%02d:%02d:%02d.%03d] ",
554 secs / 3600,
555 (secs / 60) % 60,
556 secs % 60,
a4bb1db8 557 (int)(ti % 1000));
6975b713 558 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 559 d->linestart = 0;
560 }
6975b713 561 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 562 if (buf[i] == '\n') {
563 d->linestart = 1;
6f97dba0
AL		 564 }
565 }
566 }
567 return ret;
568}
569
570static const char * const mux_help[] = {
571 "% h print this help\n\r",
572 "% x exit emulator\n\r",
573 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 574 "% t toggle console timestamps\n\r",
6f97dba0
AL		 575 "% b send break (magic sysrq)\n\r",
576 "% c switch between console and monitor\n\r",
577 "% % sends %\n\r",
578 NULL
579};
580
581int term_escape_char = 0x01; /* ctrl-a is used for escape */
582static void mux_print_help(CharDriverState *chr)
583{
584 int i, j;
585 char ebuf[15] = "Escape-Char";
586 char cbuf[50] = "\n\r";
587
588 if (term_escape_char > 0 && term_escape_char < 26) {
589 snprintf(cbuf, sizeof(cbuf), "\n\r");
590 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
591 } else {
592 snprintf(cbuf, sizeof(cbuf),
593 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
594 term_escape_char);
595 }
6975b713 596 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 597 for (i = 0; mux_help[i] != NULL; i++) {
598 for (j=0; mux_help[i][j] != '\0'; j++) {
599 if (mux_help[i][j] == '%')
6975b713 600 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 601 else
6975b713 602 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 603 }
604 }
605}
606
2724b180
AL		 607static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
608{
609 if (d->chr_event[mux_nr])
610 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
611}
612
6f97dba0
AL		 613static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
614{
615 if (d->term_got_escape) {
616 d->term_got_escape = 0;
617 if (ch == term_escape_char)
618 goto send_char;
619 switch(ch) {
620 case '?':
621 case 'h':
622 mux_print_help(chr);
623 break;
624 case 'x':
625 {
626 const char *term = "QEMU: Terminated\n\r";
6975b713 627 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 628 exit(0);
629 break;
630 }
631 case 's':
da31d594 632 blk_commit_all();
6f97dba0
AL		 633 break;
634 case 'b':
a425d23f 635 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 636 break;
637 case 'c':
638 /* Switch to the next registered device */
799f1f23
GH		 639 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
640 d->focus++;
641 if (d->focus >= d->mux_cnt)
642 d->focus = 0;
643 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 644 break;
2d22959d
JK		 645 case 't':
646 d->timestamps = !d->timestamps;
647 d->timestamps_start = -1;
4ab312f7 648 d->linestart = 0;
2d22959d 649 break;
6f97dba0
AL		 650 }
651 } else if (ch == term_escape_char) {
652 d->term_got_escape = 1;
653 } else {
654 send_char:
655 return 1;
656 }
657 return 0;
658}
659
660static void mux_chr_accept_input(CharDriverState *chr)
661{
6f97dba0 662 MuxDriver *d = chr->opaque;
799f1f23 663 int m = d->focus;
6f97dba0 664
a80bf99f 665 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 666 d->chr_can_read[m] &&
667 d->chr_can_read[m](d->ext_opaque[m])) {
668 d->chr_read[m](d->ext_opaque[m],
a80bf99f 669 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 670 }
671}
672
673static int mux_chr_can_read(void *opaque)
674{
675 CharDriverState *chr = opaque;
676 MuxDriver *d = chr->opaque;
799f1f23 677 int m = d->focus;
6f97dba0 678
a80bf99f 679 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 680 return 1;
a80bf99f
AL		 681 if (d->chr_can_read[m])
682 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 683 return 0;
684}
685
686static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
687{
688 CharDriverState *chr = opaque;
689 MuxDriver *d = chr->opaque;
799f1f23 690 int m = d->focus;
6f97dba0
AL		 691 int i;
692
693 mux_chr_accept_input (opaque);
694
695 for(i = 0; i < size; i++)
696 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 697 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 698 d->chr_can_read[m] &&
699 d->chr_can_read[m](d->ext_opaque[m]))
700 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
701 else
a80bf99f 702 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 703 }
704}
705
706static void mux_chr_event(void *opaque, int event)
707{
708 CharDriverState *chr = opaque;
709 MuxDriver *d = chr->opaque;
710 int i;
711
712 /* Send the event to all registered listeners */
713 for (i = 0; i < d->mux_cnt; i++)
2724b180 714 mux_chr_send_event(d, i, event);
6f97dba0
AL		 715}
716
717static void mux_chr_update_read_handler(CharDriverState *chr)
718{
719 MuxDriver *d = chr->opaque;
720
721 if (d->mux_cnt >= MAX_MUX) {
722 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
723 return;
724 }
725 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
726 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
727 d->chr_read[d->mux_cnt] = chr->chr_read;
728 d->chr_event[d->mux_cnt] = chr->chr_event;
729 /* Fix up the real driver with mux routines */
730 if (d->mux_cnt == 0) {
731 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
732 mux_chr_event, chr);
733 }
799f1f23
GH		 734 if (d->focus != -1) {
735 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 736 }
799f1f23 737 d->focus = d->mux_cnt;
6f97dba0 738 d->mux_cnt++;
799f1f23 739 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 740}
741
7b7ab18d
MR		 742static bool muxes_realized;
743
744/**
745 * Called after processing of default and command-line-specified
746 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
747 * to a mux chardev. This is done here to ensure that
748 * output/prompts/banners are only displayed for the FE that has
749 * focus when initial command-line processing/machine init is
750 * completed.
751 *
752 * After this point, any new FE attached to any new or existing
753 * mux will receive CHR_EVENT_OPENED notifications for the BE
754 * immediately.
755 */
756static void muxes_realize_done(Notifier *notifier, void *unused)
757{
758 CharDriverState *chr;
759
760 QTAILQ_FOREACH(chr, &chardevs, next) {
761 if (chr->is_mux) {
762 MuxDriver *d = chr->opaque;
763 int i;
764
765 /* send OPENED to all already-attached FEs */
766 for (i = 0; i < d->mux_cnt; i++) {
767 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
768 }
769 /* mark mux as OPENED so any new FEs will immediately receive
770 * OPENED event
771 */
772 qemu_chr_be_generic_open(chr);
773 }
774 }
775 muxes_realized = true;
776}
777
778static Notifier muxes_realize_notify = {
779 .notify = muxes_realize_done,
780};
781
3f0838ab
KB		 782static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
783{
784 MuxDriver *d = s->opaque;
785 return d->drv->chr_add_watch(d->drv, cond);
786}
787
3c0e5a4a
PB		 788static CharDriverState *qemu_chr_open_mux(const char *id,
789 ChardevBackend *backend,
790 ChardevReturn *ret, Error **errp)
6f97dba0 791{
130257dc 792 ChardevMux *mux = backend->u.mux;
3c0e5a4a 793 CharDriverState *chr, *drv;
6f97dba0 794 MuxDriver *d;
f194a1ae 795 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 796
3c0e5a4a
PB		 797 drv = qemu_chr_find(mux->chardev);
798 if (drv == NULL) {
799 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
800 return NULL;
801 }
802
d0d7708b
DB		 803 chr = qemu_chr_alloc(common, errp);
804 if (!chr) {
805 return NULL;
806 }
2d528d45 807 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 808
809 chr->opaque = d;
810 d->drv = drv;
799f1f23 811 d->focus = -1;
6f97dba0
AL		 812 chr->chr_write = mux_chr_write;
813 chr->chr_update_read_handler = mux_chr_update_read_handler;
814 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 815 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 816 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 817 if (drv->chr_add_watch) {
818 chr->chr_add_watch = mux_chr_add_watch;
819 }
7b7ab18d
MR		 820 /* only default to opened state if we've realized the initial
821 * set of muxes
822 */
823 chr->explicit_be_open = muxes_realized ? 0 : 1;
824 chr->is_mux = 1;
73cdf3f2 825
6f97dba0
AL		 826 return chr;
827}
828
829
96c63847
AL		 830typedef struct IOWatchPoll
831{
d185c094
PB		 832 GSource parent;
833
9894dc0c 834 QIOChannel *ioc;
96c63847 835 GSource *src;
96c63847
AL		 836
837 IOCanReadHandler *fd_can_read;
1e885b25 838 GSourceFunc fd_read;
96c63847 839 void *opaque;
96c63847
AL		 840} IOWatchPoll;
841
96c63847
AL		 842static IOWatchPoll *io_watch_poll_from_source(GSource *source)
843{
d185c094 844 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 845}
846
847static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
848{
849 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 850 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 851 bool was_active = iwp->src != NULL;
d185c094 852 if (was_active == now_active) {
96c63847
AL		 853 return FALSE;
854 }
855
d185c094 856 if (now_active) {
9894dc0c
DB		 857 iwp->src = qio_channel_create_watch(
858 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 859 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 860 g_source_attach(iwp->src, NULL);
861 } else {
1e885b25
PB		 862 g_source_destroy(iwp->src);
863 g_source_unref(iwp->src);
864 iwp->src = NULL;
d185c094
PB		 865 }
866 return FALSE;
96c63847
AL		 867}
868
869static gboolean io_watch_poll_check(GSource *source)
870{
d185c094 871 return FALSE;
96c63847
AL		 872}
873
874static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
875 gpointer user_data)
876{
d185c094 877 abort();
96c63847
AL		 878}
879
880static void io_watch_poll_finalize(GSource *source)
881{
2b316774
PB		 882 /* Due to a glib bug, removing the last reference to a source
883 * inside a finalize callback causes recursive locking (and a
884 * deadlock). This is not a problem inside other callbacks,
885 * including dispatch callbacks, so we call io_remove_watch_poll
886 * to remove this source. At this point, iwp->src must
887 * be NULL, or we would leak it.
888 *
889 * This would be solved much more elegantly by child sources,
890 * but we support older glib versions that do not have them.
891 */
96c63847 892 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 893 assert(iwp->src == NULL);
96c63847
AL		 894}
895
896static GSourceFuncs io_watch_poll_funcs = {
897 .prepare = io_watch_poll_prepare,
898 .check = io_watch_poll_check,
899 .dispatch = io_watch_poll_dispatch,
900 .finalize = io_watch_poll_finalize,
901};
902
903/* Can only be used for read */
9894dc0c 904static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 905 IOCanReadHandler *fd_can_read,
9894dc0c 906 QIOChannelFunc fd_read,
96c63847
AL		 907 gpointer user_data)
908{
909 IOWatchPoll *iwp;
0ca5aa4f 910 int tag;
96c63847 911
d185c094 912 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 913 iwp->fd_can_read = fd_can_read;
914 iwp->opaque = user_data;
9894dc0c 915 iwp->ioc = ioc;
1e885b25
PB		 916 iwp->fd_read = (GSourceFunc) fd_read;
917 iwp->src = NULL;
96c63847 918
0ca5aa4f
PB		 919 tag = g_source_attach(&iwp->parent, NULL);
920 g_source_unref(&iwp->parent);
921 return tag;
96c63847
AL		 922}
923
2b316774
PB		 924static void io_remove_watch_poll(guint tag)
925{
926 GSource *source;
927 IOWatchPoll *iwp;
928
929 g_return_if_fail (tag > 0);
930
931 source = g_main_context_find_source_by_id(NULL, tag);
932 g_return_if_fail (source != NULL);
933
934 iwp = io_watch_poll_from_source(source);
935 if (iwp->src) {
936 g_source_destroy(iwp->src);
937 g_source_unref(iwp->src);
938 iwp->src = NULL;
939 }
940 g_source_destroy(&iwp->parent);
941}
942
26da70c7
AS		 943static void remove_fd_in_watch(CharDriverState *chr)
944{
945 if (chr->fd_in_tag) {
946 io_remove_watch_poll(chr->fd_in_tag);
947 chr->fd_in_tag = 0;
948 }
949}
950
96c63847 951
9894dc0c
DB		 952static int io_channel_send_full(QIOChannel *ioc,
953 const void *buf, size_t len,
954 int *fds, size_t nfds)
76a9644b 955{
9894dc0c 956 size_t offset = 0;
76a9644b 957
9894dc0c
DB		 958 while (offset < len) {
959 ssize_t ret = 0;
960 struct iovec iov = { .iov_base = (char *)buf + offset,
961 .iov_len = len - offset };
962
963 ret = qio_channel_writev_full(
964 ioc, &iov, 1,
965 fds, nfds, NULL);
966 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 967 if (offset) {
968 return offset;
969 }
76a9644b 970
e046fb44
DB		 971 errno = EAGAIN;
972 return -1;
973 } else if (ret < 0) {
9894dc0c
DB		 974 errno = EINVAL;
975 return -1;
976 }
76a9644b 977
9894dc0c
DB		 978 offset += ret;
979 }
76a9644b 980
9894dc0c 981 return offset;
76a9644b
AL		 982}
983
9894dc0c 984
0ff0fad2 985#ifndef _WIN32
9894dc0c 986static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 987{
9894dc0c 988 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 989}
96c63847 990
44ab9ed4 991
a29753f8
AL		 992typedef struct FDCharDriver {
993 CharDriverState *chr;
9894dc0c 994 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 995 int max_size;
996} FDCharDriver;
997
9005b2a7 998/* Called with chr_write_lock held. */
6f97dba0
AL		 999static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1000{
1001 FDCharDriver *s = chr->opaque;
a29753f8 1002
9894dc0c 1003 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1004}
1005
9894dc0c 1006static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1007{
1008 CharDriverState *chr = opaque;
1009 FDCharDriver *s = chr->opaque;
a29753f8 1010 int len;
9bd7854e 1011 uint8_t buf[READ_BUF_LEN];
9894dc0c 1012 ssize_t ret;
6f97dba0
AL		 1013
1014 len = sizeof(buf);
a29753f8 1015 if (len > s->max_size) {
6f97dba0 1016 len = s->max_size;
a29753f8
AL		 1017 }
1018 if (len == 0) {
cdbf6e16 1019 return TRUE;
a29753f8
AL		 1020 }
1021
9894dc0c
DB		 1022 ret = qio_channel_read(
1023 chan, (gchar *)buf, len, NULL);
1024 if (ret == 0) {
26da70c7 1025 remove_fd_in_watch(chr);
a425d23f 1026 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1027 return FALSE;
6f97dba0 1028 }
9894dc0c
DB		 1029 if (ret > 0) {
1030 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1031 }
a29753f8
AL		 1032
1033 return TRUE;
1034}
1035
1036static int fd_chr_read_poll(void *opaque)
1037{
1038 CharDriverState *chr = opaque;
1039 FDCharDriver *s = chr->opaque;
1040
1041 s->max_size = qemu_chr_be_can_write(chr);
1042 return s->max_size;
6f97dba0
AL		 1043}
1044
23673ca7
AL		 1045static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1046{
1047 FDCharDriver *s = chr->opaque;
9894dc0c 1048 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1049}
1050
6f97dba0
AL		 1051static void fd_chr_update_read_handler(CharDriverState *chr)
1052{
1053 FDCharDriver *s = chr->opaque;
1054
26da70c7 1055 remove_fd_in_watch(chr);
9894dc0c
DB		 1056 if (s->ioc_in) {
1057 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1058 fd_chr_read_poll,
7ba9addc 1059 fd_chr_read, chr);
6f97dba0
AL		 1060 }
1061}
1062
1063static void fd_chr_close(struct CharDriverState *chr)
1064{
1065 FDCharDriver *s = chr->opaque;
1066
26da70c7 1067 remove_fd_in_watch(chr);
9894dc0c
DB		 1068 if (s->ioc_in) {
1069 object_unref(OBJECT(s->ioc_in));
a29753f8 1070 }
9894dc0c
DB		 1071 if (s->ioc_out) {
1072 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1073 }
1074
7267c094 1075 g_free(s);
a425d23f 1076 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1077}
1078
1079/* open a character device to a unix fd */
d0d7708b
DB		 1080static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1081 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1082{
1083 CharDriverState *chr;
1084 FDCharDriver *s;
1085
d0d7708b
DB		 1086 chr = qemu_chr_alloc(backend, errp);
1087 if (!chr) {
1088 return NULL;
1089 }
2d528d45 1090 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1091 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1092 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1093 qemu_set_nonblock(fd_out);
a29753f8 1094 s->chr = chr;
6f97dba0 1095 chr->opaque = s;
23673ca7 1096 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1097 chr->chr_write = fd_chr_write;
1098 chr->chr_update_read_handler = fd_chr_update_read_handler;
1099 chr->chr_close = fd_chr_close;
1100
6f97dba0
AL		 1101 return chr;
1102}
1103
20cbe7a2
PB		 1104static CharDriverState *qemu_chr_open_pipe(const char *id,
1105 ChardevBackend *backend,
1106 ChardevReturn *ret,
1107 Error **errp)
6f97dba0 1108{
130257dc 1109 ChardevHostdev *opts = backend->u.pipe;
6f97dba0 1110 int fd_in, fd_out;
0ff0fad2
DB		 1111 char *filename_in;
1112 char *filename_out;
548cbb36 1113 const char *filename = opts->device;
f194a1ae 1114 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1115
0ff0fad2
DB		 1116
1117 filename_in = g_strdup_printf("%s.in", filename);
1118 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1119 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1120 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1121 g_free(filename_in);
1122 g_free(filename_out);
6f97dba0
AL		 1123 if (fd_in < 0 || fd_out < 0) {
1124 if (fd_in >= 0)
1125 close(fd_in);
1126 if (fd_out >= 0)
1127 close(fd_out);
b181e047 1128 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1129 if (fd_in < 0) {
20cbe7a2 1130 error_setg_file_open(errp, errno, filename);
1f51470d 1131 return NULL;
a89dd6c3 1132 }
6f97dba0 1133 }
d0d7708b 1134 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1135}
1136
6f97dba0
AL		 1137/* init terminal so that we can grab keys */
1138static struct termios oldtty;
1139static int old_fd0_flags;
c88930a6 1140static bool stdio_in_use;
bb002513 1141static bool stdio_allow_signal;
e76d4420
GH		 1142static bool stdio_echo_state;
1143
1144static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1145
1146static void term_exit(void)
1147{
1148 tcsetattr (0, TCSANOW, &oldtty);
1149 fcntl(0, F_SETFL, old_fd0_flags);
1150}
1151
e76d4420
GH		 1152static void term_stdio_handler(int sig)
1153{
1154 /* restore echo after resume from suspend. */
1155 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1156}
1157
bb002513 1158static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1159{
1160 struct termios tty;
1161
e76d4420 1162 stdio_echo_state = echo;
0369364b 1163 tty = oldtty;
bb002513
PB		 1164 if (!echo) {
1165 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1166 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1167 tty.c_oflag |= OPOST;
1168 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1169 tty.c_cflag &= ~(CSIZE|PARENB);
1170 tty.c_cflag |= CS8;
1171 tty.c_cc[VMIN] = 1;
1172 tty.c_cc[VTIME] = 0;
1173 }
bb002513 1174 if (!stdio_allow_signal)
6f97dba0 1175 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1176
1177 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1178}
1179
1180static void qemu_chr_close_stdio(struct CharDriverState *chr)
1181{
1182 term_exit();
6f97dba0
AL		 1183 fd_chr_close(chr);
1184}
1185
8c84b25d
PB		 1186static CharDriverState *qemu_chr_open_stdio(const char *id,
1187 ChardevBackend *backend,
1188 ChardevReturn *ret,
1189 Error **errp)
6f97dba0 1190{
130257dc 1191 ChardevStdio *opts = backend->u.stdio;
6f97dba0 1192 CharDriverState *chr;
e76d4420 1193 struct sigaction act;
f194a1ae 1194 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1195
ab51b1d5 1196 if (is_daemonized()) {
8c84b25d 1197 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1198 return NULL;
1199 }
c88930a6
LL		 1200
1201 if (stdio_in_use) {
8c84b25d
PB		 1202 error_setg(errp, "cannot use stdio by multiple character devices");
1203 return NULL;
c88930a6
LL		 1204 }
1205
1206 stdio_in_use = true;
ed7a1540 1207 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1208 tcgetattr(0, &oldtty);
4ff12bdb 1209 qemu_set_nonblock(0);
ed7a1540 1210 atexit(term_exit);
0369364b 1211
e76d4420
GH		 1212 memset(&act, 0, sizeof(act));
1213 act.sa_handler = term_stdio_handler;
1214 sigaction(SIGCONT, &act, NULL);
1215
d0d7708b 1216 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1217 chr->chr_close = qemu_chr_close_stdio;
bb002513 1218 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1219 if (opts->has_signal) {
1220 stdio_allow_signal = opts->signal;
1221 }
15f31519 1222 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1223
1f51470d 1224 return chr;
6f97dba0
AL		 1225}
1226
6f97dba0 1227#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1228 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1229 || defined(__GLIBC__)
6f97dba0 1230
d809ab95
PB		 1231#define HAVE_CHARDEV_SERIAL 1
1232#define HAVE_CHARDEV_PTY 1
e551498e 1233
6f97dba0 1234typedef struct {
9894dc0c 1235 QIOChannel *ioc;
6f97dba0 1236 int read_bytes;
9005b2a7
PB		 1237
1238 /* Protected by the CharDriverState chr_write_lock. */
1239 int connected;
8aa33caf 1240 guint timer_tag;
7b3621f4 1241 guint open_tag;
6f97dba0
AL		 1242} PtyCharDriver;
1243
9005b2a7 1244static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1245static void pty_chr_state(CharDriverState *chr, int connected);
1246
8aa33caf
AL		 1247static gboolean pty_chr_timer(gpointer opaque)
1248{
1249 struct CharDriverState *chr = opaque;
1250 PtyCharDriver *s = chr->opaque;
1251
9005b2a7 1252 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1253 s->timer_tag = 0;
7b3621f4 1254 s->open_tag = 0;
b0d768c3
GH		 1255 if (!s->connected) {
1256 /* Next poll ... */
9005b2a7 1257 pty_chr_update_read_handler_locked(chr);
b0d768c3 1258 }
9005b2a7 1259 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1260 return FALSE;
1261}
1262
9005b2a7 1263/* Called with chr_write_lock held. */
8aa33caf
AL		 1264static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1265{
1266 PtyCharDriver *s = chr->opaque;
1267
1268 if (s->timer_tag) {
1269 g_source_remove(s->timer_tag);
1270 s->timer_tag = 0;
1271 }
1272
1273 if (ms == 1000) {
1274 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1275 } else {
1276 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1277 }
1278}
1279
9005b2a7
PB		 1280/* Called with chr_write_lock held. */
1281static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1282{
1283 PtyCharDriver *s = chr->opaque;
1284 GPollFD pfd;
c1f24489 1285 int rc;
9894dc0c 1286 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1287
9894dc0c 1288 pfd.fd = fioc->fd;
1bb7fe72
PB		 1289 pfd.events = G_IO_OUT;
1290 pfd.revents = 0;
c1f24489
PB		 1291 do {
1292 rc = g_poll(&pfd, 1, 0);
1293 } while (rc == -1 && errno == EINTR);
1294 assert(rc >= 0);
1295
1bb7fe72
PB		 1296 if (pfd.revents & G_IO_HUP) {
1297 pty_chr_state(chr, 0);
1298 } else {
1299 pty_chr_state(chr, 1);
1300 }
1301}
1302
9005b2a7
PB		 1303static void pty_chr_update_read_handler(CharDriverState *chr)
1304{
1305 qemu_mutex_lock(&chr->chr_write_lock);
1306 pty_chr_update_read_handler_locked(chr);
1307 qemu_mutex_unlock(&chr->chr_write_lock);
1308}
1309
1310/* Called with chr_write_lock held. */
6f97dba0
AL		 1311static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1312{
1313 PtyCharDriver *s = chr->opaque;
1314
1315 if (!s->connected) {
1316 /* guest sends data, check for (re-)connect */
9005b2a7 1317 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1318 if (!s->connected) {
1319 return 0;
1320 }
6f97dba0 1321 }
9894dc0c 1322 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1323}
1324
e6a87ed8
AL		 1325static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1326{
1327 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1328 if (!s->connected) {
1329 return NULL;
1330 }
9894dc0c 1331 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1332}
1333
6f97dba0
AL		 1334static int pty_chr_read_poll(void *opaque)
1335{
1336 CharDriverState *chr = opaque;
1337 PtyCharDriver *s = chr->opaque;
1338
909cda12 1339 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1340 return s->read_bytes;
1341}
1342
9894dc0c 1343static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1344{
1345 CharDriverState *chr = opaque;
1346 PtyCharDriver *s = chr->opaque;
9894dc0c 1347 gsize len;
9bd7854e 1348 uint8_t buf[READ_BUF_LEN];
9894dc0c 1349 ssize_t ret;
6f97dba0
AL		 1350
1351 len = sizeof(buf);
1352 if (len > s->read_bytes)
1353 len = s->read_bytes;
cdbf6e16
PB		 1354 if (len == 0) {
1355 return TRUE;
1356 }
9894dc0c
DB		 1357 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1358 if (ret <= 0) {
6f97dba0 1359 pty_chr_state(chr, 0);
093d3a20
AL		 1360 return FALSE;
1361 } else {
6f97dba0 1362 pty_chr_state(chr, 1);
9894dc0c 1363 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1364 }
093d3a20 1365 return TRUE;
6f97dba0
AL		 1366}
1367
7b3621f4
PB		 1368static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1369{
1370 CharDriverState *chr = opaque;
1371 PtyCharDriver *s = chr->opaque;
1372
1373 s->open_tag = 0;
1374 qemu_chr_be_generic_open(chr);
1375 return FALSE;
1376}
1377
9005b2a7 1378/* Called with chr_write_lock held. */
6f97dba0
AL		 1379static void pty_chr_state(CharDriverState *chr, int connected)
1380{
1381 PtyCharDriver *s = chr->opaque;
1382
1383 if (!connected) {
7b3621f4
PB		 1384 if (s->open_tag) {
1385 g_source_remove(s->open_tag);
1386 s->open_tag = 0;
1387 }
26da70c7 1388 remove_fd_in_watch(chr);
6f97dba0 1389 s->connected = 0;
6f97dba0
AL		 1390 /* (re-)connect poll interval for idle guests: once per second.
1391 * We check more frequently in case the guests sends data to
1392 * the virtual device linked to our pty. */
8aa33caf 1393 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1394 } else {
85a67692
PB		 1395 if (s->timer_tag) {
1396 g_source_remove(s->timer_tag);
1397 s->timer_tag = 0;
1398 }
1399 if (!s->connected) {
7b3621f4 1400 g_assert(s->open_tag == 0);
85a67692 1401 s->connected = 1;
7b3621f4 1402 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1403 }
1404 if (!chr->fd_in_tag) {
9894dc0c
DB		 1405 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1406 pty_chr_read_poll,
7ba9addc 1407 pty_chr_read, chr);
85a67692 1408 }
6f97dba0
AL		 1409 }
1410}
1411
6f97dba0
AL		 1412static void pty_chr_close(struct CharDriverState *chr)
1413{
1414 PtyCharDriver *s = chr->opaque;
1415
7b3621f4
PB		 1416 qemu_mutex_lock(&chr->chr_write_lock);
1417 pty_chr_state(chr, 0);
9894dc0c 1418 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1419 if (s->timer_tag) {
1420 g_source_remove(s->timer_tag);
910b6368 1421 s->timer_tag = 0;
8aa33caf 1422 }
7b3621f4 1423 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1424 g_free(s);
a425d23f 1425 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1426}
1427
e68c5958 1428static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1429 ChardevBackend *backend,
1430 ChardevReturn *ret,
1431 Error **errp)
6f97dba0
AL		 1432{
1433 CharDriverState *chr;
1434 PtyCharDriver *s;
e68c5958 1435 int master_fd, slave_fd;
6f97dba0 1436 char pty_name[PATH_MAX];
b1918fbb 1437 ChardevCommon *common = backend->u.pty;
6f97dba0 1438
4efeabbb
MT		 1439 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1440 if (master_fd < 0) {
c2e75a43 1441 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1442 return NULL;
6f97dba0
AL		 1443 }
1444
837a183f 1445 close(slave_fd);
fac6688a 1446 qemu_set_nonblock(master_fd);
6f97dba0 1447
d0d7708b
DB		 1448 chr = qemu_chr_alloc(common, errp);
1449 if (!chr) {
1450 close(master_fd);
1451 return NULL;
1452 }
a4e26048 1453
4efeabbb
MT		 1454 chr->filename = g_strdup_printf("pty:%s", pty_name);
1455 ret->pty = g_strdup(pty_name);
e68c5958 1456 ret->has_pty = true;
58650218 1457
e68c5958 1458 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1459 pty_name, id);
6f97dba0 1460
2d528d45 1461 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1462 chr->opaque = s;
1463 chr->chr_write = pty_chr_write;
1464 chr->chr_update_read_handler = pty_chr_update_read_handler;
1465 chr->chr_close = pty_chr_close;
e6a87ed8 1466 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1467 chr->explicit_be_open = true;
6f97dba0 1468
9894dc0c 1469 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1470 s->timer_tag = 0;
6f97dba0 1471
1f51470d 1472 return chr;
6f97dba0
AL		 1473}
1474
1475static void tty_serial_init(int fd, int speed,
1476 int parity, int data_bits, int stop_bits)
1477{
1478 struct termios tty;
1479 speed_t spd;
1480
1481#if 0
1482 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1483 speed, parity, data_bits, stop_bits);
1484#endif
1485 tcgetattr (fd, &tty);
1486
45eea13b
SW		 1487#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1488 speed = speed * 10 / 11;
1489 do {
1490 check_speed(50);
1491 check_speed(75);
1492 check_speed(110);
1493 check_speed(134);
1494 check_speed(150);
1495 check_speed(200);
1496 check_speed(300);
1497 check_speed(600);
1498 check_speed(1200);
1499 check_speed(1800);
1500 check_speed(2400);
1501 check_speed(4800);
1502 check_speed(9600);
1503 check_speed(19200);
1504 check_speed(38400);
1505 /* Non-Posix values follow. They may be unsupported on some systems. */
1506 check_speed(57600);
1507 check_speed(115200);
1508#ifdef B230400
1509 check_speed(230400);
1510#endif
1511#ifdef B460800
1512 check_speed(460800);
1513#endif
1514#ifdef B500000
1515 check_speed(500000);
1516#endif
1517#ifdef B576000
1518 check_speed(576000);
1519#endif
1520#ifdef B921600
1521 check_speed(921600);
1522#endif
1523#ifdef B1000000
1524 check_speed(1000000);
1525#endif
1526#ifdef B1152000
1527 check_speed(1152000);
1528#endif
1529#ifdef B1500000
1530 check_speed(1500000);
1531#endif
1532#ifdef B2000000
1533 check_speed(2000000);
1534#endif
1535#ifdef B2500000
1536 check_speed(2500000);
1537#endif
1538#ifdef B3000000
1539 check_speed(3000000);
1540#endif
1541#ifdef B3500000
1542 check_speed(3500000);
1543#endif
1544#ifdef B4000000
1545 check_speed(4000000);
1546#endif
6f97dba0 1547 spd = B115200;
45eea13b 1548 } while (0);
6f97dba0
AL		 1549
1550 cfsetispeed(&tty, spd);
1551 cfsetospeed(&tty, spd);
1552
1553 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1554 |INLCR|IGNCR|ICRNL|IXON);
1555 tty.c_oflag |= OPOST;
1556 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1557 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1558 switch(data_bits) {
1559 default:
1560 case 8:
1561 tty.c_cflag |= CS8;
1562 break;
1563 case 7:
1564 tty.c_cflag |= CS7;
1565 break;
1566 case 6:
1567 tty.c_cflag |= CS6;
1568 break;
1569 case 5:
1570 tty.c_cflag |= CS5;
1571 break;
1572 }
1573 switch(parity) {
1574 default:
1575 case 'N':
1576 break;
1577 case 'E':
1578 tty.c_cflag |= PARENB;
1579 break;
1580 case 'O':
1581 tty.c_cflag |= PARENB | PARODD;
1582 break;
1583 }
1584 if (stop_bits == 2)
1585 tty.c_cflag |= CSTOPB;
1586
1587 tcsetattr (fd, TCSANOW, &tty);
1588}
1589
1590static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1591{
1592 FDCharDriver *s = chr->opaque;
9894dc0c 1593 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1594
1595 switch(cmd) {
1596 case CHR_IOCTL_SERIAL_SET_PARAMS:
1597 {
1598 QEMUSerialSetParams *ssp = arg;
9894dc0c 1599 tty_serial_init(fioc->fd,
a29753f8 1600 ssp->speed, ssp->parity,
6f97dba0
AL		 1601 ssp->data_bits, ssp->stop_bits);
1602 }
1603 break;
1604 case CHR_IOCTL_SERIAL_SET_BREAK:
1605 {
1606 int enable = *(int *)arg;
a29753f8 1607 if (enable) {
9894dc0c 1608 tcsendbreak(fioc->fd, 1);
a29753f8 1609 }
6f97dba0
AL		 1610 }
1611 break;
1612 case CHR_IOCTL_SERIAL_GET_TIOCM:
1613 {
1614 int sarg = 0;
1615 int *targ = (int *)arg;
9894dc0c 1616 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1617 *targ = 0;
b4abdfa4 1618 if (sarg & TIOCM_CTS)
6f97dba0 1619 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1620 if (sarg & TIOCM_CAR)
6f97dba0 1621 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1622 if (sarg & TIOCM_DSR)
6f97dba0 1623 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1624 if (sarg & TIOCM_RI)
6f97dba0 1625 *targ |= CHR_TIOCM_RI;
b4abdfa4 1626 if (sarg & TIOCM_DTR)
6f97dba0 1627 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1628 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1629 *targ |= CHR_TIOCM_RTS;
1630 }
1631 break;
1632 case CHR_IOCTL_SERIAL_SET_TIOCM:
1633 {
1634 int sarg = *(int *)arg;
1635 int targ = 0;
9894dc0c 1636 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1637 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1638 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1639 if (sarg & CHR_TIOCM_CTS)
1640 targ |= TIOCM_CTS;
1641 if (sarg & CHR_TIOCM_CAR)
1642 targ |= TIOCM_CAR;
1643 if (sarg & CHR_TIOCM_DSR)
1644 targ |= TIOCM_DSR;
1645 if (sarg & CHR_TIOCM_RI)
1646 targ |= TIOCM_RI;
1647 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1648 targ |= TIOCM_DTR;
b4abdfa4 1649 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1650 targ |= TIOCM_RTS;
9894dc0c 1651 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1652 }
1653 break;
1654 default:
1655 return -ENOTSUP;
1656 }
1657 return 0;
1658}
1659
4266a134
DA		 1660static void qemu_chr_close_tty(CharDriverState *chr)
1661{
4266a134 1662 fd_chr_close(chr);
4266a134
DA		 1663}
1664
d0d7708b
DB		 1665static CharDriverState *qemu_chr_open_tty_fd(int fd,
1666 ChardevCommon *backend,
1667 Error **errp)
d59044ef
GH		 1668{
1669 CharDriverState *chr;
1670
1671 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1672 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1673 chr->chr_ioctl = tty_serial_ioctl;
1674 chr->chr_close = qemu_chr_close_tty;
1675 return chr;
1676}
6f97dba0
AL		 1677#endif /* __linux__ || __sun__ */
1678
1679#if defined(__linux__)
e551498e
GH		 1680
1681#define HAVE_CHARDEV_PARPORT 1
1682
6f97dba0
AL		 1683typedef struct {
1684 int fd;
1685 int mode;
1686} ParallelCharDriver;
1687
1688static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1689{
1690 if (s->mode != mode) {
1691 int m = mode;
1692 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1693 return 0;
1694 s->mode = mode;
1695 }
1696 return 1;
1697}
1698
1699static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1700{
1701 ParallelCharDriver *drv = chr->opaque;
1702 int fd = drv->fd;
1703 uint8_t b;
1704
1705 switch(cmd) {
1706 case CHR_IOCTL_PP_READ_DATA:
1707 if (ioctl(fd, PPRDATA, &b) < 0)
1708 return -ENOTSUP;
1709 *(uint8_t *)arg = b;
1710 break;
1711 case CHR_IOCTL_PP_WRITE_DATA:
1712 b = *(uint8_t *)arg;
1713 if (ioctl(fd, PPWDATA, &b) < 0)
1714 return -ENOTSUP;
1715 break;
1716 case CHR_IOCTL_PP_READ_CONTROL:
1717 if (ioctl(fd, PPRCONTROL, &b) < 0)
1718 return -ENOTSUP;
1719 /* Linux gives only the lowest bits, and no way to know data
1720 direction! For better compatibility set the fixed upper
1721 bits. */
1722 *(uint8_t *)arg = b | 0xc0;
1723 break;
1724 case CHR_IOCTL_PP_WRITE_CONTROL:
1725 b = *(uint8_t *)arg;
1726 if (ioctl(fd, PPWCONTROL, &b) < 0)
1727 return -ENOTSUP;
1728 break;
1729 case CHR_IOCTL_PP_READ_STATUS:
1730 if (ioctl(fd, PPRSTATUS, &b) < 0)
1731 return -ENOTSUP;
1732 *(uint8_t *)arg = b;
1733 break;
1734 case CHR_IOCTL_PP_DATA_DIR:
1735 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1736 return -ENOTSUP;
1737 break;
1738 case CHR_IOCTL_PP_EPP_READ_ADDR:
1739 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1740 struct ParallelIOArg *parg = arg;
1741 int n = read(fd, parg->buffer, parg->count);
1742 if (n != parg->count) {
1743 return -EIO;
1744 }
1745 }
1746 break;
1747 case CHR_IOCTL_PP_EPP_READ:
1748 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1749 struct ParallelIOArg *parg = arg;
1750 int n = read(fd, parg->buffer, parg->count);
1751 if (n != parg->count) {
1752 return -EIO;
1753 }
1754 }
1755 break;
1756 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1757 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1758 struct ParallelIOArg *parg = arg;
1759 int n = write(fd, parg->buffer, parg->count);
1760 if (n != parg->count) {
1761 return -EIO;
1762 }
1763 }
1764 break;
1765 case CHR_IOCTL_PP_EPP_WRITE:
1766 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1767 struct ParallelIOArg *parg = arg;
1768 int n = write(fd, parg->buffer, parg->count);
1769 if (n != parg->count) {
1770 return -EIO;
1771 }
1772 }
1773 break;
1774 default:
1775 return -ENOTSUP;
1776 }
1777 return 0;
1778}
1779
1780static void pp_close(CharDriverState *chr)
1781{
1782 ParallelCharDriver *drv = chr->opaque;
1783 int fd = drv->fd;
1784
1785 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1786 ioctl(fd, PPRELEASE);
1787 close(fd);
7267c094 1788 g_free(drv);
a425d23f 1789 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1790}
1791
d0d7708b
DB		 1792static CharDriverState *qemu_chr_open_pp_fd(int fd,
1793 ChardevCommon *backend,
1794 Error **errp)
6f97dba0
AL		 1795{
1796 CharDriverState *chr;
1797 ParallelCharDriver *drv;
6f97dba0
AL		 1798
1799 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1800 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1801 close(fd);
1f51470d 1802 return NULL;
6f97dba0
AL		 1803 }
1804
d0d7708b
DB		 1805 chr = qemu_chr_alloc(backend, errp);
1806 if (!chr) {
1807 return NULL;
1808 }
27ef9cb0
PB		 1809
1810 drv = g_new0(ParallelCharDriver, 1);
1811 chr->opaque = drv;
6f97dba0
AL		 1812 chr->chr_write = null_chr_write;
1813 chr->chr_ioctl = pp_ioctl;
1814 chr->chr_close = pp_close;
27ef9cb0
PB		 1815
1816 drv->fd = fd;
1817 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1818
1f51470d 1819 return chr;
6f97dba0
AL		 1820}
1821#endif /* __linux__ */
1822
a167ba50 1823#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1824
1825#define HAVE_CHARDEV_PARPORT 1
1826
6972f935
BS		 1827static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1828{
e0efb993 1829 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1830 uint8_t b;
1831
1832 switch(cmd) {
1833 case CHR_IOCTL_PP_READ_DATA:
1834 if (ioctl(fd, PPIGDATA, &b) < 0)
1835 return -ENOTSUP;
1836 *(uint8_t *)arg = b;
1837 break;
1838 case CHR_IOCTL_PP_WRITE_DATA:
1839 b = *(uint8_t *)arg;
1840 if (ioctl(fd, PPISDATA, &b) < 0)
1841 return -ENOTSUP;
1842 break;
1843 case CHR_IOCTL_PP_READ_CONTROL:
1844 if (ioctl(fd, PPIGCTRL, &b) < 0)
1845 return -ENOTSUP;
1846 *(uint8_t *)arg = b;
1847 break;
1848 case CHR_IOCTL_PP_WRITE_CONTROL:
1849 b = *(uint8_t *)arg;
1850 if (ioctl(fd, PPISCTRL, &b) < 0)
1851 return -ENOTSUP;
1852 break;
1853 case CHR_IOCTL_PP_READ_STATUS:
1854 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1855 return -ENOTSUP;
1856 *(uint8_t *)arg = b;
1857 break;
1858 default:
1859 return -ENOTSUP;
1860 }
1861 return 0;
1862}
1863
d0d7708b 1864static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1865 ChardevCommon *backend,
d0d7708b 1866 Error **errp)
6972f935
BS		 1867{
1868 CharDriverState *chr;
6972f935 1869
0850d49c 1870 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1871 if (!chr) {
1872 return NULL;
1873 }
e0efb993 1874 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1875 chr->chr_write = null_chr_write;
1876 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1877 chr->explicit_be_open = true;
1f51470d 1878 return chr;
6972f935
BS		 1879}
1880#endif
1881
6f97dba0
AL		 1882#else /* _WIN32 */
1883
d809ab95
PB		 1884#define HAVE_CHARDEV_SERIAL 1
1885
6f97dba0
AL		 1886typedef struct {
1887 int max_size;
1888 HANDLE hcom, hrecv, hsend;
9005b2a7 1889 OVERLAPPED orecv;
6f97dba0
AL		 1890 BOOL fpipe;
1891 DWORD len;
9005b2a7
PB		 1892
1893 /* Protected by the CharDriverState chr_write_lock. */
1894 OVERLAPPED osend;
6f97dba0
AL		 1895} WinCharState;
1896
db418a0a
FC		 1897typedef struct {
1898 HANDLE hStdIn;
1899 HANDLE hInputReadyEvent;
1900 HANDLE hInputDoneEvent;
1901 HANDLE hInputThread;
1902 uint8_t win_stdio_buf;
1903} WinStdioCharState;
1904
6f97dba0
AL		 1905#define NSENDBUF 2048
1906#define NRECVBUF 2048
1907#define MAXCONNECT 1
1908#define NTIMEOUT 5000
1909
1910static int win_chr_poll(void *opaque);
1911static int win_chr_pipe_poll(void *opaque);
1912
1913static void win_chr_close(CharDriverState *chr)
1914{
1915 WinCharState *s = chr->opaque;
1916
1917 if (s->hsend) {
1918 CloseHandle(s->hsend);
1919 s->hsend = NULL;
1920 }
1921 if (s->hrecv) {
1922 CloseHandle(s->hrecv);
1923 s->hrecv = NULL;
1924 }
1925 if (s->hcom) {
1926 CloseHandle(s->hcom);
1927 s->hcom = NULL;
1928 }
1929 if (s->fpipe)
1930 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1931 else
1932 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1933
a425d23f 1934 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1935}
1936
6511d396 1937static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1938{
1939 WinCharState *s = chr->opaque;
1940 COMMCONFIG comcfg;
1941 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1942 COMSTAT comstat;
1943 DWORD size;
1944 DWORD err;
1945
1946 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1947 if (!s->hsend) {
6511d396 1948 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1949 goto fail;
1950 }
1951 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1952 if (!s->hrecv) {
6511d396 1953 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1954 goto fail;
1955 }
1956
1957 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1958 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1959 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1960 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1961 s->hcom = NULL;
1962 goto fail;
1963 }
1964
1965 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1966 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1967 goto fail;
1968 }
1969
1970 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1971 size = sizeof(COMMCONFIG);
1972 GetDefaultCommConfig(filename, &comcfg, &size);
1973 comcfg.dcb.DCBlength = sizeof(DCB);
1974 CommConfigDialog(filename, NULL, &comcfg);
1975
1976 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1977 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1978 goto fail;
1979 }
1980
1981 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1982 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1983 goto fail;
1984 }
1985
1986 cto.ReadIntervalTimeout = MAXDWORD;
1987 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1988 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1989 goto fail;
1990 }
1991
1992 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 1993 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 1994 goto fail;
1995 }
1996 qemu_add_polling_cb(win_chr_poll, chr);
1997 return 0;
1998
1999 fail:
2000 win_chr_close(chr);
2001 return -1;
2002}
2003
9005b2a7 2004/* Called with chr_write_lock held. */
6f97dba0
AL		 2005static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2006{
2007 WinCharState *s = chr->opaque;
2008 DWORD len, ret, size, err;
2009
2010 len = len1;
2011 ZeroMemory(&s->osend, sizeof(s->osend));
2012 s->osend.hEvent = s->hsend;
2013 while (len > 0) {
2014 if (s->hsend)
2015 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2016 else
2017 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2018 if (!ret) {
2019 err = GetLastError();
2020 if (err == ERROR_IO_PENDING) {
2021 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2022 if (ret) {
2023 buf += size;
2024 len -= size;
2025 } else {
2026 break;
2027 }
2028 } else {
2029 break;
2030 }
2031 } else {
2032 buf += size;
2033 len -= size;
2034 }
2035 }
2036 return len1 - len;
2037}
2038
2039static int win_chr_read_poll(CharDriverState *chr)
2040{
2041 WinCharState *s = chr->opaque;
2042
909cda12 2043 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2044 return s->max_size;
2045}
2046
2047static void win_chr_readfile(CharDriverState *chr)
2048{
2049 WinCharState *s = chr->opaque;
2050 int ret, err;
9bd7854e 2051 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2052 DWORD size;
2053
2054 ZeroMemory(&s->orecv, sizeof(s->orecv));
2055 s->orecv.hEvent = s->hrecv;
2056 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2057 if (!ret) {
2058 err = GetLastError();
2059 if (err == ERROR_IO_PENDING) {
2060 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2061 }
2062 }
2063
2064 if (size > 0) {
fa5efccb 2065 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2066 }
2067}
2068
2069static void win_chr_read(CharDriverState *chr)
2070{
2071 WinCharState *s = chr->opaque;
2072
2073 if (s->len > s->max_size)
2074 s->len = s->max_size;
2075 if (s->len == 0)
2076 return;
2077
2078 win_chr_readfile(chr);
2079}
2080
2081static int win_chr_poll(void *opaque)
2082{
2083 CharDriverState *chr = opaque;
2084 WinCharState *s = chr->opaque;
2085 COMSTAT status;
2086 DWORD comerr;
2087
2088 ClearCommError(s->hcom, &comerr, &status);
2089 if (status.cbInQue > 0) {
2090 s->len = status.cbInQue;
2091 win_chr_read_poll(chr);
2092 win_chr_read(chr);
2093 return 1;
2094 }
2095 return 0;
2096}
2097
6511d396 2098static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2099 ChardevCommon *backend,
6511d396 2100 Error **errp)
6f97dba0
AL		 2101{
2102 CharDriverState *chr;
2103 WinCharState *s;
2104
d0d7708b
DB		 2105 chr = qemu_chr_alloc(backend, errp);
2106 if (!chr) {
2107 return NULL;
2108 }
2d528d45 2109 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2110 chr->opaque = s;
2111 chr->chr_write = win_chr_write;
2112 chr->chr_close = win_chr_close;
2113
6511d396 2114 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2115 g_free(s);
d0d7708b 2116 qemu_chr_free_common(chr);
1f51470d 2117 return NULL;
6f97dba0 2118 }
1f51470d 2119 return chr;
6f97dba0
AL		 2120}
2121
2122static int win_chr_pipe_poll(void *opaque)
2123{
2124 CharDriverState *chr = opaque;
2125 WinCharState *s = chr->opaque;
2126 DWORD size;
2127
2128 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2129 if (size > 0) {
2130 s->len = size;
2131 win_chr_read_poll(chr);
2132 win_chr_read(chr);
2133 return 1;
2134 }
2135 return 0;
2136}
2137
20cbe7a2
PB		 2138static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2139 Error **errp)
6f97dba0
AL		 2140{
2141 WinCharState *s = chr->opaque;
2142 OVERLAPPED ov;
2143 int ret;
2144 DWORD size;
0ff0fad2 2145 char *openname;
6f97dba0
AL		 2146
2147 s->fpipe = TRUE;
2148
2149 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2150 if (!s->hsend) {
20cbe7a2 2151 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2152 goto fail;
2153 }
2154 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2155 if (!s->hrecv) {
20cbe7a2 2156 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2157 goto fail;
2158 }
2159
0ff0fad2 2160 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2161 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2162 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2163 PIPE_WAIT,
2164 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2165 g_free(openname);
6f97dba0 2166 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2167 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2168 s->hcom = NULL;
2169 goto fail;
2170 }
2171
2172 ZeroMemory(&ov, sizeof(ov));
2173 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2174 ret = ConnectNamedPipe(s->hcom, &ov);
2175 if (ret) {
20cbe7a2 2176 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2177 goto fail;
2178 }
2179
2180 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2181 if (!ret) {
20cbe7a2 2182 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2183 if (ov.hEvent) {
2184 CloseHandle(ov.hEvent);
2185 ov.hEvent = NULL;
2186 }
2187 goto fail;
2188 }
2189
2190 if (ov.hEvent) {
2191 CloseHandle(ov.hEvent);
2192 ov.hEvent = NULL;
2193 }
2194 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2195 return 0;
2196
2197 fail:
2198 win_chr_close(chr);
2199 return -1;
2200}
2201
2202
20cbe7a2
PB		 2203static CharDriverState *qemu_chr_open_pipe(const char *id,
2204 ChardevBackend *backend,
2205 ChardevReturn *ret,
2206 Error **errp)
6f97dba0 2207{
130257dc 2208 ChardevHostdev *opts = backend->u.pipe;
548cbb36 2209 const char *filename = opts->device;
6f97dba0
AL		 2210 CharDriverState *chr;
2211 WinCharState *s;
f194a1ae 2212 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2213
d0d7708b
DB		 2214 chr = qemu_chr_alloc(common, errp);
2215 if (!chr) {
2216 return NULL;
2217 }
2d528d45 2218 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2219 chr->opaque = s;
2220 chr->chr_write = win_chr_write;
2221 chr->chr_close = win_chr_close;
2222
20cbe7a2 2223 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2224 g_free(s);
d0d7708b 2225 qemu_chr_free_common(chr);
1f51470d 2226 return NULL;
6f97dba0 2227 }
1f51470d 2228 return chr;
6f97dba0
AL		 2229}
2230
d0d7708b
DB		 2231static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2232 ChardevCommon *backend,
2233 Error **errp)
6f97dba0
AL		 2234{
2235 CharDriverState *chr;
2236 WinCharState *s;
2237
d0d7708b
DB		 2238 chr = qemu_chr_alloc(backend, errp);
2239 if (!chr) {
2240 return NULL;
2241 }
2d528d45 2242 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2243 s->hcom = fd_out;
2244 chr->opaque = s;
2245 chr->chr_write = win_chr_write;
1f51470d 2246 return chr;
6f97dba0
AL		 2247}
2248
122e5ed4
PB		 2249static CharDriverState *qemu_chr_open_win_con(const char *id,
2250 ChardevBackend *backend,
2251 ChardevReturn *ret,
2252 Error **errp)
6f97dba0 2253{
b1918fbb 2254 ChardevCommon *common = backend->u.console;
d0d7708b
DB		 2255 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2256 common, errp);
6f97dba0
AL		 2257}
2258
db418a0a
FC		 2259static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2260{
2261 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2262 DWORD dwSize;
2263 int len1;
2264
2265 len1 = len;
2266
2267 while (len1 > 0) {
2268 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2269 break;
2270 }
2271 buf += dwSize;
2272 len1 -= dwSize;
2273 }
2274
2275 return len - len1;
2276}
2277
2278static void win_stdio_wait_func(void *opaque)
2279{
2280 CharDriverState *chr = opaque;
2281 WinStdioCharState *stdio = chr->opaque;
2282 INPUT_RECORD buf[4];
2283 int ret;
2284 DWORD dwSize;
2285 int i;
2286
dff7424d 2287 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2288
2289 if (!ret) {
2290 /* Avoid error storm */
2291 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2292 return;
2293 }
2294
2295 for (i = 0; i < dwSize; i++) {
2296 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2297
2298 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2299 int j;
2300 if (kev->uChar.AsciiChar != 0) {
2301 for (j = 0; j < kev->wRepeatCount; j++) {
2302 if (qemu_chr_be_can_write(chr)) {
2303 uint8_t c = kev->uChar.AsciiChar;
2304 qemu_chr_be_write(chr, &c, 1);
2305 }
2306 }
2307 }
2308 }
2309 }
2310}
2311
2312static DWORD WINAPI win_stdio_thread(LPVOID param)
2313{
2314 CharDriverState *chr = param;
2315 WinStdioCharState *stdio = chr->opaque;
2316 int ret;
2317 DWORD dwSize;
2318
2319 while (1) {
2320
2321 /* Wait for one byte */
2322 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2323
2324 /* Exit in case of error, continue if nothing read */
2325 if (!ret) {
2326 break;
2327 }
2328 if (!dwSize) {
2329 continue;
2330 }
2331
2332 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2333 if (stdio->win_stdio_buf == '\r') {
2334 continue;
2335 }
2336
2337 /* Signal the main thread and wait until the byte was eaten */
2338 if (!SetEvent(stdio->hInputReadyEvent)) {
2339 break;
2340 }
2341 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2342 != WAIT_OBJECT_0) {
2343 break;
2344 }
2345 }
2346
2347 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2348 return 0;
2349}
2350
2351static void win_stdio_thread_wait_func(void *opaque)
2352{
2353 CharDriverState *chr = opaque;
2354 WinStdioCharState *stdio = chr->opaque;
2355
2356 if (qemu_chr_be_can_write(chr)) {
2357 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2358 }
2359
2360 SetEvent(stdio->hInputDoneEvent);
2361}
2362
2363static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2364{
2365 WinStdioCharState *stdio = chr->opaque;
2366 DWORD dwMode = 0;
2367
2368 GetConsoleMode(stdio->hStdIn, &dwMode);
2369
2370 if (echo) {
2371 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2372 } else {
2373 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2374 }
2375}
2376
2377static void win_stdio_close(CharDriverState *chr)
2378{
2379 WinStdioCharState *stdio = chr->opaque;
2380
2381 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2382 CloseHandle(stdio->hInputReadyEvent);
2383 }
2384 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2385 CloseHandle(stdio->hInputDoneEvent);
2386 }
2387 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2388 TerminateThread(stdio->hInputThread, 0);
2389 }
2390
2391 g_free(chr->opaque);
2392 g_free(chr);
db418a0a
FC		 2393}
2394
8c84b25d
PB		 2395static CharDriverState *qemu_chr_open_stdio(const char *id,
2396 ChardevBackend *backend,
2397 ChardevReturn *ret,
2398 Error **errp)
db418a0a
FC		 2399{
2400 CharDriverState *chr;
2401 WinStdioCharState *stdio;
2402 DWORD dwMode;
2403 int is_console = 0;
d0d7708b 2404 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
db418a0a 2405
d0d7708b
DB		 2406 chr = qemu_chr_alloc(common, errp);
2407 if (!chr) {
2408 return NULL;
2409 }
2d528d45 2410 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2411
2412 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2413 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2414 error_setg(errp, "cannot open stdio: invalid handle");
2415 return NULL;
db418a0a
FC		 2416 }
2417
2418 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2419
2420 chr->opaque = stdio;
2421 chr->chr_write = win_stdio_write;
2422 chr->chr_close = win_stdio_close;
2423
ed7a1540
AL		 2424 if (is_console) {
2425 if (qemu_add_wait_object(stdio->hStdIn,
2426 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2427 error_setg(errp, "qemu_add_wait_object: failed");
2428 goto err1;
ed7a1540
AL		 2429 }
2430 } else {
2431 DWORD dwId;
2432
2433 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2434 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2435 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2436 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2437 error_setg(errp, "cannot create event");
2438 goto err2;
ed7a1540
AL		 2439 }
2440 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2441 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2442 error_setg(errp, "qemu_add_wait_object: failed");
2443 goto err2;
2444 }
2445 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2446 chr, 0, &dwId);
2447
2448 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2449 error_setg(errp, "cannot create stdio thread");
2450 goto err3;
db418a0a
FC		 2451 }
2452 }
2453
2454 dwMode |= ENABLE_LINE_INPUT;
2455
ed7a1540 2456 if (is_console) {
db418a0a
FC		 2457 /* set the terminal in raw mode */
2458 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2459 dwMode |= ENABLE_PROCESSED_INPUT;
2460 }
2461
2462 SetConsoleMode(stdio->hStdIn, dwMode);
2463
2464 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2465 qemu_chr_fe_set_echo(chr, false);
2466
1f51470d 2467 return chr;
8c84b25d
PB		 2468
2469err3:
2470 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2471err2:
2472 CloseHandle(stdio->hInputReadyEvent);
2473 CloseHandle(stdio->hInputDoneEvent);
2474err1:
2475 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2476 return NULL;
db418a0a 2477}
6f97dba0
AL		 2478#endif /* !_WIN32 */
2479
5ab8211b 2480
6f97dba0
AL		 2481/***********************************************************/
2482/* UDP Net console */
2483
2484typedef struct {
9894dc0c 2485 QIOChannel *ioc;
9bd7854e 2486 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2487 int bufcnt;
2488 int bufptr;
2489 int max_size;
2490} NetCharDriver;
2491
9005b2a7 2492/* Called with chr_write_lock held. */
6f97dba0
AL		 2493static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2494{
2495 NetCharDriver *s = chr->opaque;
76a9644b 2496
9894dc0c
DB		 2497 return qio_channel_write(
2498 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2499}
2500
2501static int udp_chr_read_poll(void *opaque)
2502{
2503 CharDriverState *chr = opaque;
2504 NetCharDriver *s = chr->opaque;
2505
909cda12 2506 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2507
2508 /* If there were any stray characters in the queue process them
2509 * first
2510 */
2511 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2512 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2513 s->bufptr++;
909cda12 2514 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2515 }
2516 return s->max_size;
2517}
2518
9894dc0c 2519static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2520{
2521 CharDriverState *chr = opaque;
2522 NetCharDriver *s = chr->opaque;
9894dc0c 2523 ssize_t ret;
6f97dba0 2524
cdbf6e16
PB		 2525 if (s->max_size == 0) {
2526 return TRUE;
2527 }
9894dc0c
DB		 2528 ret = qio_channel_read(
2529 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2530 if (ret <= 0) {
26da70c7 2531 remove_fd_in_watch(chr);
76a9644b
AL		 2532 return FALSE;
2533 }
9894dc0c 2534 s->bufcnt = ret;
6f97dba0
AL		 2535
2536 s->bufptr = 0;
2537 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2538 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2539 s->bufptr++;
909cda12 2540 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2541 }
76a9644b
AL		 2542
2543 return TRUE;
6f97dba0
AL		 2544}
2545
2546static void udp_chr_update_read_handler(CharDriverState *chr)
2547{
2548 NetCharDriver *s = chr->opaque;
2549
26da70c7 2550 remove_fd_in_watch(chr);
9894dc0c
DB		 2551 if (s->ioc) {
2552 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2553 udp_chr_read_poll,
7ba9addc 2554 udp_chr_read, chr);
6f97dba0
AL		 2555 }
2556}
2557
819f56b7
AL		 2558static void udp_chr_close(CharDriverState *chr)
2559{
2560 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2561
2562 remove_fd_in_watch(chr);
9894dc0c
DB		 2563 if (s->ioc) {
2564 object_unref(OBJECT(s->ioc));
819f56b7 2565 }
7267c094 2566 g_free(s);
a425d23f 2567 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2568}
2569
9894dc0c
DB		 2570static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2571 ChardevCommon *backend,
2572 Error **errp)
6f97dba0
AL		 2573{
2574 CharDriverState *chr = NULL;
2575 NetCharDriver *s = NULL;
6f97dba0 2576
d0d7708b
DB		 2577 chr = qemu_chr_alloc(backend, errp);
2578 if (!chr) {
2579 return NULL;
2580 }
2d528d45 2581 s = g_new0(NetCharDriver, 1);
6f97dba0 2582
9894dc0c 2583 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2584 s->bufcnt = 0;
2585 s->bufptr = 0;
2586 chr->opaque = s;
2587 chr->chr_write = udp_chr_write;
2588 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2589 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2590 /* be isn't opened until we get a connection */
2591 chr->explicit_be_open = true;
1f51470d 2592 return chr;
3ecc059d 2593}
6f97dba0 2594
6f97dba0
AL		 2595/***********************************************************/
2596/* TCP Net console */
2597
2598typedef struct {
a8fb5427
DB		 2599 QIOChannel *ioc; /* Client I/O channel */
2600 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2601 QIOChannelSocket *listen_ioc;
7ba9addc 2602 guint listen_tag;
a8fb5427 2603 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2604 int connected;
2605 int max_size;
2606 int do_telnetopt;
2607 int do_nodelay;
2608 int is_unix;
c76bf6bb 2609 int *read_msgfds;
9894dc0c 2610 size_t read_msgfds_num;
d39aac7a 2611 int *write_msgfds;
9894dc0c 2612 size_t write_msgfds_num;
cfb429cb
CM		 2613
2614 SocketAddress *addr;
2615 bool is_listen;
2616 bool is_telnet;
5dd1f02b
CM		 2617
2618 guint reconnect_timer;
2619 int64_t reconnect_time;
5008e5b7 2620 bool connect_err_reported;
6f97dba0
AL		 2621} TCPCharDriver;
2622
5dd1f02b
CM		 2623static gboolean socket_reconnect_timeout(gpointer opaque);
2624
2625static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2626{
2627 TCPCharDriver *s = chr->opaque;
2628 assert(s->connected == 0);
2629 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2630 socket_reconnect_timeout, chr);
2631}
2632
5008e5b7
CM		 2633static void check_report_connect_error(CharDriverState *chr,
2634 Error *err)
2635{
2636 TCPCharDriver *s = chr->opaque;
2637
2638 if (!s->connect_err_reported) {
2639 error_report("Unable to connect character device %s: %s",
2640 chr->label, error_get_pretty(err));
2641 s->connect_err_reported = true;
2642 }
2643 qemu_chr_socket_restart_timer(chr);
2644}
2645
9894dc0c
DB		 2646static gboolean tcp_chr_accept(QIOChannel *chan,
2647 GIOCondition cond,
2648 void *opaque);
d39aac7a 2649
9005b2a7 2650/* Called with chr_write_lock held. */
6f97dba0
AL		 2651static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2652{
2653 TCPCharDriver *s = chr->opaque;
2654 if (s->connected) {
9894dc0c
DB		 2655 int ret = io_channel_send_full(s->ioc, buf, len,
2656 s->write_msgfds,
2657 s->write_msgfds_num);
2658
2659 /* free the written msgfds, no matter what */
2660 if (s->write_msgfds_num) {
2661 g_free(s->write_msgfds);
2662 s->write_msgfds = 0;
2663 s->write_msgfds_num = 0;
d39aac7a 2664 }
9894dc0c
DB		 2665
2666 return ret;
455aa1e0 2667 } else {
6db0fdce 2668 /* XXX: indicate an error ? */
455aa1e0 2669 return len;
6f97dba0
AL		 2670 }
2671}
2672
2673static int tcp_chr_read_poll(void *opaque)
2674{
2675 CharDriverState *chr = opaque;
2676 TCPCharDriver *s = chr->opaque;
2677 if (!s->connected)
2678 return 0;
909cda12 2679 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2680 return s->max_size;
2681}
2682
2683#define IAC 255
2684#define IAC_BREAK 243
2685static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2686 TCPCharDriver *s,
2687 uint8_t *buf, int *size)
2688{
2689 /* Handle any telnet client's basic IAC options to satisfy char by
2690 * char mode with no echo. All IAC options will be removed from
2691 * the buf and the do_telnetopt variable will be used to track the
2692 * state of the width of the IAC information.
2693 *
2694 * IAC commands come in sets of 3 bytes with the exception of the
2695 * "IAC BREAK" command and the double IAC.
2696 */
2697
2698 int i;
2699 int j = 0;
2700
2701 for (i = 0; i < *size; i++) {
2702 if (s->do_telnetopt > 1) {
2703 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2704 /* Double IAC means send an IAC */
2705 if (j != i)
2706 buf[j] = buf[i];
2707 j++;
2708 s->do_telnetopt = 1;
2709 } else {
2710 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2711 /* Handle IAC break commands by sending a serial break */
a425d23f 2712 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2713 s->do_telnetopt++;
2714 }
2715 s->do_telnetopt++;
2716 }
2717 if (s->do_telnetopt >= 4) {
2718 s->do_telnetopt = 1;
2719 }
2720 } else {
2721 if ((unsigned char)buf[i] == IAC) {
2722 s->do_telnetopt = 2;
2723 } else {
2724 if (j != i)
2725 buf[j] = buf[i];
2726 j++;
2727 }
2728 }
2729 }
2730 *size = j;
2731}
2732
c76bf6bb 2733static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2734{
2735 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2736 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2737
c4095726
MT		 2738 assert(num <= TCP_MAX_FDS);
2739
c76bf6bb 2740 if (to_copy) {
d2fc39b4
SH		 2741 int i;
2742
c76bf6bb
NN		 2743 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2744
d2fc39b4
SH		 2745 /* Close unused fds */
2746 for (i = to_copy; i < s->read_msgfds_num; i++) {
2747 close(s->read_msgfds[i]);
2748 }
2749
c76bf6bb
NN		 2750 g_free(s->read_msgfds);
2751 s->read_msgfds = 0;
2752 s->read_msgfds_num = 0;
2753 }
2754
2755 return to_copy;
7d174059
MM		 2756}
2757
d39aac7a
NN		 2758static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2759{
2760 TCPCharDriver *s = chr->opaque;
2761
9894dc0c
DB		 2762 if (!qio_channel_has_feature(s->ioc,
2763 QIO_CHANNEL_FEATURE_FD_PASS)) {
2764 return -1;
2765 }
d39aac7a 2766 /* clear old pending fd array */
ef1e1e07 2767 g_free(s->write_msgfds);
869a58af 2768 s->write_msgfds = NULL;
d39aac7a
NN		 2769
2770 if (num) {
2d528d45 2771 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2772 memcpy(s->write_msgfds, fds, num * sizeof(int));
2773 }
2774
2775 s->write_msgfds_num = num;
2776
2777 return 0;
2778}
2779
9894dc0c 2780static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2781{
2782 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2783 struct iovec iov = { .iov_base = buf, .iov_len = len };
2784 int ret;
2785 size_t i;
2786 int *msgfds = NULL;
2787 size_t msgfds_num = 0;
2788
2789 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2790 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2791 &msgfds, &msgfds_num,
2792 NULL);
2793 } else {
2794 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2795 NULL, NULL,
2796 NULL);
2797 }
7d174059 2798
9894dc0c 2799 if (msgfds_num) {
c76bf6bb
NN		 2800 /* close and clean read_msgfds */
2801 for (i = 0; i < s->read_msgfds_num; i++) {
2802 close(s->read_msgfds[i]);
2803 }
9b938c72 2804
c76bf6bb
NN		 2805 if (s->read_msgfds_num) {
2806 g_free(s->read_msgfds);
2807 }
2808
9894dc0c
DB		 2809 s->read_msgfds = msgfds;
2810 s->read_msgfds_num = msgfds_num;
7d174059 2811 }
7d174059 2812
9894dc0c
DB		 2813 for (i = 0; i < s->read_msgfds_num; i++) {
2814 int fd = s->read_msgfds[i];
2815 if (fd < 0) {
2816 continue;
2817 }
9977c894 2818
9894dc0c
DB		 2819 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2820 qemu_set_block(fd);
7d174059 2821
9894dc0c
DB		 2822#ifndef MSG_CMSG_CLOEXEC
2823 qemu_set_cloexec(fd);
06138651 2824#endif
06138651 2825 }
9977c894 2826
7d174059 2827 return ret;
9977c894 2828}
9977c894 2829
d3cc5bc4
AS		 2830static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2831{
2832 TCPCharDriver *s = chr->opaque;
9894dc0c 2833 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2834}
2835
7b0bfdf5
NN		 2836static void tcp_chr_disconnect(CharDriverState *chr)
2837{
2838 TCPCharDriver *s = chr->opaque;
2839
342f7a9d
MAL		 2840 if (!s->connected) {
2841 return;
2842 }
2843
7b0bfdf5 2844 s->connected = 0;
9894dc0c
DB		 2845 if (s->listen_ioc) {
2846 s->listen_tag = qio_channel_add_watch(
2847 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
7b0bfdf5 2848 }
6167ebbd 2849 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2850 remove_fd_in_watch(chr);
a8fb5427
DB		 2851 object_unref(OBJECT(s->sioc));
2852 s->sioc = NULL;
9894dc0c
DB		 2853 object_unref(OBJECT(s->ioc));
2854 s->ioc = NULL;
0ff0fad2
DB		 2855 g_free(chr->filename);
2856 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2857 s->is_listen, s->is_telnet);
7b0bfdf5 2858 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2859 if (s->reconnect_time) {
2860 qemu_chr_socket_restart_timer(chr);
2861 }
7b0bfdf5
NN		 2862}
2863
9894dc0c 2864static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2865{
2866 CharDriverState *chr = opaque;
2867 TCPCharDriver *s = chr->opaque;
9bd7854e 2868 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2869 int len, size;
2870
2ea5a7af 2871 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2872 return TRUE;
2ea5a7af 2873 }
6f97dba0
AL		 2874 len = sizeof(buf);
2875 if (len > s->max_size)
2876 len = s->max_size;
9977c894 2877 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2878 if (size == 0 || size == -1) {
6f97dba0 2879 /* connection closed */
7b0bfdf5 2880 tcp_chr_disconnect(chr);
6f97dba0
AL		 2881 } else if (size > 0) {
2882 if (s->do_telnetopt)
2883 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2884 if (size > 0)
fa5efccb 2885 qemu_chr_be_write(chr, buf, size);
6f97dba0 2886 }
2ea5a7af
AL		 2887
2888 return TRUE;
6f97dba0
AL		 2889}
2890
7b0bfdf5
NN		 2891static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2892{
2893 TCPCharDriver *s = chr->opaque;
2894 int size;
2895
2896 if (!s->connected) {
2897 return 0;
2898 }
2899
2900 size = tcp_chr_recv(chr, (void *) buf, len);
2901 if (size == 0) {
2902 /* connection closed */
2903 tcp_chr_disconnect(chr);
2904 }
2905
2906 return size;
2907}
2908
6f97dba0
AL		 2909static void tcp_chr_connect(void *opaque)
2910{
2911 CharDriverState *chr = opaque;
2912 TCPCharDriver *s = chr->opaque;
16cc4ffe 2913
0ff0fad2 2914 g_free(chr->filename);
a8fb5427
DB		 2915 chr->filename = sockaddr_to_str(
2916 &s->sioc->localAddr, s->sioc->localAddrLen,
2917 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2918 s->is_listen, s->is_telnet);
6f97dba0
AL		 2919
2920 s->connected = 1;
9894dc0c
DB		 2921 if (s->ioc) {
2922 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2923 tcp_chr_read_poll,
7ba9addc 2924 tcp_chr_read, chr);
bbdd2ad0 2925 }
fee204fd 2926 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2927}
2928
ac1b84dd
GH		 2929static void tcp_chr_update_read_handler(CharDriverState *chr)
2930{
2931 TCPCharDriver *s = chr->opaque;
2932
1e94f23d
DB		 2933 if (!s->connected) {
2934 return;
2935 }
2936
ac1b84dd 2937 remove_fd_in_watch(chr);
9894dc0c
DB		 2938 if (s->ioc) {
2939 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2940 tcp_chr_read_poll,
ac1b84dd
GH		 2941 tcp_chr_read, chr);
2942 }
2943}
2944
f2001a7e
DB		 2945typedef struct {
2946 CharDriverState *chr;
2947 char buf[12];
2948 size_t buflen;
2949} TCPCharDriverTelnetInit;
2950
2951static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2952 GIOCondition cond G_GNUC_UNUSED,
2953 gpointer user_data)
6f97dba0 2954{
f2001a7e
DB		 2955 TCPCharDriverTelnetInit *init = user_data;
2956 ssize_t ret;
2957
2958 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2959 if (ret < 0) {
2960 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2961 ret = 0;
2962 } else {
2963 tcp_chr_disconnect(init->chr);
2964 return FALSE;
2965 }
2966 }
2967 init->buflen -= ret;
2968
2969 if (init->buflen == 0) {
2970 tcp_chr_connect(init->chr);
2971 return FALSE;
2972 }
2973
2974 memmove(init->buf, init->buf + ret, init->buflen);
2975
2976 return TRUE;
2977}
2978
2979static void tcp_chr_telnet_init(CharDriverState *chr)
2980{
2981 TCPCharDriver *s = chr->opaque;
2982 TCPCharDriverTelnetInit *init =
2983 g_new0(TCPCharDriverTelnetInit, 1);
2984 size_t n = 0;
2985
2986 init->chr = chr;
2987 init->buflen = 12;
2988
2989#define IACSET(x, a, b, c) \
2990 do { \
2991 x[n++] = a; \
2992 x[n++] = b; \
2993 x[n++] = c; \
2994 } while (0)
2995
2996 /* Prep the telnet negotion to put telnet in binary,
2997 * no echo, single char mode */
2998 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2999 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3000 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3001 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3002
3003#undef IACSET
3004
3005 qio_channel_add_watch(
3006 s->ioc, G_IO_OUT,
3007 tcp_chr_telnet_init_io,
3008 init, NULL);
6f97dba0
AL		 3009}
3010
a8fb5427
DB		 3011
3012static void tcp_chr_tls_handshake(Object *source,
3013 Error *err,
3014 gpointer user_data)
3015{
3016 CharDriverState *chr = user_data;
3017 TCPCharDriver *s = chr->opaque;
3018
3019 if (err) {
3020 tcp_chr_disconnect(chr);
3021 } else {
3022 if (s->do_telnetopt) {
3023 tcp_chr_telnet_init(chr);
3024 } else {
3025 tcp_chr_connect(chr);
3026 }
3027 }
3028}
3029
3030
3031static void tcp_chr_tls_init(CharDriverState *chr)
3032{
3033 TCPCharDriver *s = chr->opaque;
3034 QIOChannelTLS *tioc;
3035 Error *err = NULL;
3036
3037 if (s->is_listen) {
3038 tioc = qio_channel_tls_new_server(
3039 s->ioc, s->tls_creds,
3040 NULL, /* XXX Use an ACL */
3041 &err);
3042 } else {
3043 tioc = qio_channel_tls_new_client(
3044 s->ioc, s->tls_creds,
3045 s->addr->u.inet->host,
3046 &err);
3047 }
3048 if (tioc == NULL) {
3049 error_free(err);
3050 tcp_chr_disconnect(chr);
3051 }
3052 object_unref(OBJECT(s->ioc));
3053 s->ioc = QIO_CHANNEL(tioc);
3054
3055 qio_channel_tls_handshake(tioc,
3056 tcp_chr_tls_handshake,
3057 chr,
3058 NULL);
3059}
3060
3061
9894dc0c 3062static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3063{
3064 TCPCharDriver *s = chr->opaque;
9894dc0c 3065 if (s->ioc != NULL) {
13661089 3066 return -1;
9894dc0c 3067 }
13661089 3068
9894dc0c
DB		 3069 s->ioc = QIO_CHANNEL(sioc);
3070 object_ref(OBJECT(sioc));
a8fb5427
DB		 3071 s->sioc = sioc;
3072 object_ref(OBJECT(sioc));
9894dc0c
DB		 3073
3074 if (s->do_nodelay) {
3075 qio_channel_set_delay(s->ioc, false);
3076 }
910b6368
PB		 3077 if (s->listen_tag) {
3078 g_source_remove(s->listen_tag);
3079 s->listen_tag = 0;
3080 }
f2001a7e 3081
a8fb5427
DB		 3082 if (s->tls_creds) {
3083 tcp_chr_tls_init(chr);
f2001a7e 3084 } else {
a8fb5427
DB		 3085 if (s->do_telnetopt) {
3086 tcp_chr_telnet_init(chr);
3087 } else {
3088 tcp_chr_connect(chr);
3089 }
f2001a7e 3090 }
13661089
DB		 3091
3092 return 0;
3093}
3094
9894dc0c
DB		 3095
3096static int tcp_chr_add_client(CharDriverState *chr, int fd)
3097{
3098 int ret;
3099 QIOChannelSocket *sioc;
3100
3101 sioc = qio_channel_socket_new_fd(fd, NULL);
3102 if (!sioc) {
3103 return -1;
3104 }
3105 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3106 ret = tcp_chr_new_client(chr, sioc);
3107 object_unref(OBJECT(sioc));
3108 return ret;
3109}
3110
3111static gboolean tcp_chr_accept(QIOChannel *channel,
3112 GIOCondition cond,
3113 void *opaque)
6f97dba0
AL		 3114{
3115 CharDriverState *chr = opaque;
9894dc0c 3116 QIOChannelSocket *sioc;
6f97dba0 3117
9894dc0c
DB		 3118 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3119 NULL);
3120 if (!sioc) {
3121 return TRUE;
6f97dba0 3122 }
9894dc0c 3123
9894dc0c
DB		 3124 tcp_chr_new_client(chr, sioc);
3125
3126 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3127
3128 return TRUE;
6f97dba0
AL		 3129}
3130
3131static void tcp_chr_close(CharDriverState *chr)
3132{
3133 TCPCharDriver *s = chr->opaque;
c76bf6bb 3134 int i;
cfb429cb 3135
5dd1f02b
CM		 3136 if (s->reconnect_timer) {
3137 g_source_remove(s->reconnect_timer);
3138 s->reconnect_timer = 0;
3139 }
cfb429cb 3140 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3141 remove_fd_in_watch(chr);
3142 if (s->ioc) {
3143 object_unref(OBJECT(s->ioc));
819f56b7 3144 }
9894dc0c
DB		 3145 if (s->listen_tag) {
3146 g_source_remove(s->listen_tag);
3147 s->listen_tag = 0;
3148 }
3149 if (s->listen_ioc) {
3150 object_unref(OBJECT(s->listen_ioc));
819f56b7 3151 }
c76bf6bb
NN		 3152 if (s->read_msgfds_num) {
3153 for (i = 0; i < s->read_msgfds_num; i++) {
3154 close(s->read_msgfds[i]);
3155 }
3156 g_free(s->read_msgfds);
3157 }
a8fb5427
DB		 3158 if (s->tls_creds) {
3159 object_unref(OBJECT(s->tls_creds));
3160 }
d39aac7a
NN		 3161 if (s->write_msgfds_num) {
3162 g_free(s->write_msgfds);
3163 }
7267c094 3164 g_free(s);
a425d23f 3165 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3166}
3167
43ded1a0 3168
9894dc0c 3169static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3170{
9894dc0c 3171 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3172 CharDriverState *chr = opaque;
5008e5b7 3173 TCPCharDriver *s = chr->opaque;
5dd1f02b 3174
9894dc0c 3175 if (err) {
5008e5b7 3176 check_report_connect_error(chr, err);
9894dc0c 3177 object_unref(src);
5dd1f02b
CM		 3178 return;
3179 }
3180
5008e5b7 3181 s->connect_err_reported = false;
f50dfe45
DB		 3182 tcp_chr_new_client(chr, sioc);
3183 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3184}
3185
f6bd5d6e 3186
51767e7c 3187/*********************************************************/
3949e594 3188/* Ring buffer chardev */
51767e7c
LL		 3189
3190typedef struct {
3191 size_t size;
3192 size_t prod;
3193 size_t cons;
3194 uint8_t *cbuf;
3949e594 3195} RingBufCharDriver;
51767e7c 3196
3949e594 3197static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3198{
3949e594 3199 const RingBufCharDriver *d = chr->opaque;
51767e7c 3200
5c230105 3201 return d->prod - d->cons;
51767e7c
LL		 3202}
3203
9005b2a7 3204/* Called with chr_write_lock held. */
3949e594 3205static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3206{
3949e594 3207 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3208 int i;
3209
3210 if (!buf || (len < 0)) {
3211 return -1;
3212 }
3213
3214 for (i = 0; i < len; i++ ) {
5c230105
MA		 3215 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3216 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3217 d->cons = d->prod - d->size;
3218 }
3219 }
3220
3221 return 0;
3222}
3223
3949e594 3224static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3225{
3949e594 3226 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3227 int i;
3228
9005b2a7 3229 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3230 for (i = 0; i < len && d->cons != d->prod; i++) {
3231 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3232 }
9005b2a7 3233 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3234
3235 return i;
3236}
3237
3949e594 3238static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3239{
3949e594 3240 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3241
3242 g_free(d->cbuf);
3243 g_free(d);
3244 chr->opaque = NULL;
3245}
3246
479f09a1
PB		 3247static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3248 ChardevBackend *backend,
3249 ChardevReturn *ret,
4f57378f 3250 Error **errp)
51767e7c 3251{
130257dc 3252 ChardevRingbuf *opts = backend->u.ringbuf;
f194a1ae 3253 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3254 CharDriverState *chr;
3949e594 3255 RingBufCharDriver *d;
51767e7c 3256
d0d7708b
DB		 3257 chr = qemu_chr_alloc(common, errp);
3258 if (!chr) {
3259 return NULL;
3260 }
51767e7c
LL		 3261 d = g_malloc(sizeof(*d));
3262
1da48c65 3263 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3264
3265 /* The size must be power of 2 */
3266 if (d->size & (d->size - 1)) {
4f57378f 3267 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3268 goto fail;
3269 }
3270
3271 d->prod = 0;
3272 d->cons = 0;
3273 d->cbuf = g_malloc0(d->size);
3274
3275 chr->opaque = d;
3949e594
MA		 3276 chr->chr_write = ringbuf_chr_write;
3277 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3278
3279 return chr;
3280
3281fail:
3282 g_free(d);
d0d7708b 3283 qemu_chr_free_common(chr);
51767e7c
LL		 3284 return NULL;
3285}
3286
8e597779 3287bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3288{
3949e594 3289 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3290}
3291
3949e594 3292void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3293 bool has_format, enum DataFormat format,
1f590cf9
LL		 3294 Error **errp)
3295{
3296 CharDriverState *chr;
c4f331b6 3297 const uint8_t *write_data;
1f590cf9 3298 int ret;
3d1bba20 3299 gsize write_count;
1f590cf9
LL		 3300
3301 chr = qemu_chr_find(device);
3302 if (!chr) {
1a69278e 3303 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3304 return;
3305 }
3306
3949e594
MA		 3307 if (!chr_is_ringbuf(chr)) {
3308 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3309 return;
3310 }
3311
1f590cf9 3312 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3313 write_data = qbase64_decode(data, -1,
3314 &write_count,
3315 errp);
3316 if (!write_data) {
3317 return;
3318 }
1f590cf9
LL		 3319 } else {
3320 write_data = (uint8_t *)data;
82e59a67 3321 write_count = strlen(data);
1f590cf9
LL		 3322 }
3323
3949e594 3324 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3325
13289fb5
MA		 3326 if (write_data != (uint8_t *)data) {
3327 g_free((void *)write_data);
3328 }
3329
1f590cf9
LL		 3330 if (ret < 0) {
3331 error_setg(errp, "Failed to write to device %s", device);
3332 return;
3333 }
3334}
3335
3949e594 3336char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3337 bool has_format, enum DataFormat format,
3338 Error **errp)
49b6d722
LL		 3339{
3340 CharDriverState *chr;
c4f331b6 3341 uint8_t *read_data;
49b6d722 3342 size_t count;
3ab651fc 3343 char *data;
49b6d722
LL		 3344
3345 chr = qemu_chr_find(device);
3346 if (!chr) {
1a69278e 3347 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3348 return NULL;
3349 }
3350
3949e594
MA		 3351 if (!chr_is_ringbuf(chr)) {
3352 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3353 return NULL;
3354 }
3355
3356 if (size <= 0) {
3357 error_setg(errp, "size must be greater than zero");
3358 return NULL;
3359 }
3360
3949e594 3361 count = ringbuf_count(chr);
49b6d722 3362 size = size > count ? count : size;
44f3bcd2 3363 read_data = g_malloc(size + 1);
49b6d722 3364
3949e594 3365 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3366
3367 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3368 data = g_base64_encode(read_data, size);
13289fb5 3369 g_free(read_data);
49b6d722 3370 } else {
3949e594
MA		 3371 /*
3372 * FIXME should read only complete, valid UTF-8 characters up
3373 * to @size bytes. Invalid sequences should be replaced by a
3374 * suitable replacement character. Except when (and only
3375 * when) ring buffer lost characters since last read, initial
3376 * continuation characters should be dropped.
3377 */
44f3bcd2 3378 read_data[size] = 0;
3ab651fc 3379 data = (char *)read_data;
49b6d722
LL		 3380 }
3381
3ab651fc 3382 return data;
49b6d722
LL		 3383}
3384
33521634 3385QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3386{
6ea314d9 3387 char host[65], port[33], width[8], height[8];
aeb2c47a 3388 int pos;
7d31544f 3389 const char *p;
191bc01b 3390 QemuOpts *opts;
8be7e7e4 3391 Error *local_err = NULL;
191bc01b 3392
8be7e7e4 3393 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3394 if (local_err) {
33394884 3395 error_report_err(local_err);
191bc01b 3396 return NULL;
8be7e7e4 3397 }
191bc01b 3398
7591c5c1
GH		 3399 if (strstart(filename, "mon:", &p)) {
3400 filename = p;
f43e47db 3401 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3402 if (strcmp(filename, "stdio") == 0) {
3403 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3404 * but pass it to the guest. Handle this only for compat syntax,
3405 * for -chardev syntax we have special option for this.
3406 * This is what -nographic did, redirecting+muxing serial+monitor
3407 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3408 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3409 }
7591c5c1
GH		 3410 }
3411
f0457e8d
GH		 3412 if (strcmp(filename, "null") == 0 ||
3413 strcmp(filename, "pty") == 0 ||
3414 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3415 strcmp(filename, "braille") == 0 ||
5692399f 3416 strcmp(filename, "testdev") == 0 ||
f0457e8d 3417 strcmp(filename, "stdio") == 0) {
f43e47db 3418 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3419 return opts;
3420 }
6ea314d9 3421 if (strstart(filename, "vc", &p)) {
f43e47db 3422 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3423 if (*p == ':') {
49aa4058 3424 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3425 /* pixels */
f43e47db
MA		 3426 qemu_opt_set(opts, "width", width, &error_abort);
3427 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3428 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3429 /* chars */
f43e47db
MA		 3430 qemu_opt_set(opts, "cols", width, &error_abort);
3431 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3432 } else {
3433 goto fail;
3434 }
3435 }
3436 return opts;
3437 }
d6c983cd 3438 if (strcmp(filename, "con:") == 0) {
f43e47db 3439 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3440 return opts;
3441 }
48b76496 3442 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3443 qemu_opt_set(opts, "backend", "serial", &error_abort);
3444 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3445 return opts;
3446 }
7d31544f 3447 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3448 qemu_opt_set(opts, "backend", "file", &error_abort);
3449 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3450 return opts;
3451 }
3452 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3453 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3454 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3455 return opts;
3456 }
aeb2c47a
GH		 3457 if (strstart(filename, "tcp:", &p) ||
3458 strstart(filename, "telnet:", &p)) {
3459 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3460 host[0] = 0;
3461 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3462 goto fail;
3463 }
f43e47db
MA		 3464 qemu_opt_set(opts, "backend", "socket", &error_abort);
3465 qemu_opt_set(opts, "host", host, &error_abort);
3466 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3467 if (p[pos] == ',') {
dc523cd3
MA		 3468 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3469 if (local_err) {
3470 error_report_err(local_err);
aeb2c47a 3471 goto fail;
dc523cd3 3472 }
aeb2c47a
GH		 3473 }
3474 if (strstart(filename, "telnet:", &p))
f43e47db 3475 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3476 return opts;
3477 }
7e1b35b4 3478 if (strstart(filename, "udp:", &p)) {
f43e47db 3479 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3480 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3481 host[0] = 0;
39324ca4 3482 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3483 goto fail;
3484 }
3485 }
f43e47db
MA		 3486 qemu_opt_set(opts, "host", host, &error_abort);
3487 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3488 if (p[pos] == '@') {
3489 p += pos + 1;
3490 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3491 host[0] = 0;
3492 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3493 goto fail;
3494 }
3495 }
f43e47db
MA		 3496 qemu_opt_set(opts, "localaddr", host, &error_abort);
3497 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3498 }
3499 return opts;
3500 }
aeb2c47a 3501 if (strstart(filename, "unix:", &p)) {
f43e47db 3502 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3503 qemu_opts_do_parse(opts, p, "path", &local_err);
3504 if (local_err) {
3505 error_report_err(local_err);
aeb2c47a 3506 goto fail;
dc523cd3 3507 }
aeb2c47a
GH		 3508 return opts;
3509 }
48b76496
GH		 3510 if (strstart(filename, "/dev/parport", NULL) ||
3511 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3512 qemu_opt_set(opts, "backend", "parport", &error_abort);
3513 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3514 return opts;
3515 }
3516 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3517 qemu_opt_set(opts, "backend", "tty", &error_abort);
3518 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3519 return opts;
3520 }
191bc01b 3521
aeb2c47a 3522fail:
191bc01b
GH		 3523 qemu_opts_del(opts);
3524 return NULL;
3525}
3526
21a933ea 3527void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3528{
3529 const char *logfile = qemu_opt_get(opts, "logfile");
3530
3531 backend->has_logfile = logfile != NULL;
3532 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3533
3534 backend->has_logappend = true;
3535 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3536}
3537
3538
846e2e49
GH		 3539static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3540 Error **errp)
3541{
3542 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3543 ChardevFile *file;
846e2e49
GH		 3544
3545 if (path == NULL) {
3546 error_setg(errp, "chardev: file: no filename given");
3547 return;
3548 }
f194a1ae
EB		 3549 file = backend->u.file = g_new0(ChardevFile, 1);
3550 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3551 file->out = g_strdup(path);
31e38a22 3552
f194a1ae
EB		 3553 file->has_append = true;
3554 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3555}
3556
7c358031
GH		 3557static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3558 Error **errp)
3559{
f194a1ae
EB		 3560 ChardevStdio *stdio;
3561
3562 stdio = backend->u.stdio = g_new0(ChardevStdio, 1);
3563 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3564 stdio->has_signal = true;
3565 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3566}
3567
6511d396 3568#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3569static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3570 Error **errp)
3571{
3572 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3573 ChardevHostdev *serial;
0f1cb51d
GH		 3574
3575 if (device == NULL) {
3576 error_setg(errp, "chardev: serial/tty: no device path given");
3577 return;
3578 }
f194a1ae
EB		 3579 serial = backend->u.serial = g_new0(ChardevHostdev, 1);
3580 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3581 serial->device = g_strdup(device);
0f1cb51d 3582}
6511d396 3583#endif
0f1cb51d 3584
38bfb1a6 3585#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3586static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3587 Error **errp)
3588{
3589 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3590 ChardevHostdev *parallel;
dc375097
GH		 3591
3592 if (device == NULL) {
3593 error_setg(errp, "chardev: parallel: no device path given");
3594 return;
3595 }
f194a1ae
EB		 3596 parallel = backend->u.parallel = g_new0(ChardevHostdev, 1);
3597 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3598 parallel->device = g_strdup(device);
dc375097 3599}
38bfb1a6 3600#endif
dc375097 3601
548cbb36
GH		 3602static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3603 Error **errp)
3604{
3605 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3606 ChardevHostdev *dev;
548cbb36
GH		 3607
3608 if (device == NULL) {
3609 error_setg(errp, "chardev: pipe: no device path given");
3610 return;
3611 }
f194a1ae
EB		 3612 dev = backend->u.pipe = g_new0(ChardevHostdev, 1);
3613 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3614 dev->device = g_strdup(device);
548cbb36
GH		 3615}
3616
4f57378f
MA		 3617static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3618 Error **errp)
1da48c65
GH		 3619{
3620 int val;
f194a1ae 3621 ChardevRingbuf *ringbuf;
1da48c65 3622
f194a1ae
EB		 3623 ringbuf = backend->u.ringbuf = g_new0(ChardevRingbuf, 1);
3624 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3625
0f953051 3626 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3627 if (val != 0) {
f194a1ae
EB		 3628 ringbuf->has_size = true;
3629 ringbuf->size = val;
1da48c65
GH		 3630 }
3631}
3632
bb6fb7c0
GH		 3633static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3634 Error **errp)
3635{
3636 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3637 ChardevMux *mux;
bb6fb7c0
GH		 3638
3639 if (chardev == NULL) {
3640 error_setg(errp, "chardev: mux: no chardev given");
3641 return;
3642 }
f194a1ae
EB		 3643 mux = backend->u.mux = g_new0(ChardevMux, 1);
3644 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3645 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3646}
3647
dafd325d
PM		 3648static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3649 Error **errp)
3650{
3651 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3652 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3653 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3654 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3655 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3656 const char *path = qemu_opt_get(opts, "path");
3657 const char *host = qemu_opt_get(opts, "host");
3658 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3659 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3660 SocketAddress *addr;
f194a1ae 3661 ChardevSocket *sock;
dafd325d
PM		 3662
3663 if (!path) {
3664 if (!host) {
3665 error_setg(errp, "chardev: socket: no host given");
3666 return;
3667 }
3668 if (!port) {
3669 error_setg(errp, "chardev: socket: no port given");
3670 return;
3671 }
a8fb5427
DB		 3672 } else {
3673 if (tls_creds) {
3674 error_setg(errp, "TLS can only be used over TCP socket");
3675 return;
3676 }
dafd325d
PM		 3677 }
3678
f194a1ae
EB		 3679 sock = backend->u.socket = g_new0(ChardevSocket, 1);
3680 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3681
f194a1ae
EB		 3682 sock->has_nodelay = true;
3683 sock->nodelay = do_nodelay;
3684 sock->has_server = true;
3685 sock->server = is_listen;
3686 sock->has_telnet = true;
3687 sock->telnet = is_telnet;
3688 sock->has_wait = true;
3689 sock->wait = is_waitconnect;
3690 sock->has_reconnect = true;
3691 sock->reconnect = reconnect;
3692 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3693
3694 addr = g_new0(SocketAddress, 1);
3695 if (path) {
0399293e 3696 UnixSocketAddress *q_unix;
130257dc 3697 addr->type = SOCKET_ADDRESS_KIND_UNIX;
0399293e
EB		 3698 q_unix = addr->u.q_unix = g_new0(UnixSocketAddress, 1);
3699 q_unix->path = g_strdup(path);
dafd325d 3700 } else {
130257dc 3701 addr->type = SOCKET_ADDRESS_KIND_INET;
0399293e
EB		 3702 addr->u.inet = g_new(InetSocketAddress, 1);
3703 *addr->u.inet = (InetSocketAddress) {
3704 .host = g_strdup(host),
3705 .port = g_strdup(port),
3706 .has_to = qemu_opt_get(opts, "to"),
3707 .to = qemu_opt_get_number(opts, "to", 0),
3708 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3709 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3710 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3711 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3712 };
dafd325d 3713 }
f194a1ae 3714 sock->addr = addr;
dafd325d
PM		 3715}
3716
90a14bfe
PM		 3717static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3718 Error **errp)
3719{
3720 const char *host = qemu_opt_get(opts, "host");
3721 const char *port = qemu_opt_get(opts, "port");
3722 const char *localaddr = qemu_opt_get(opts, "localaddr");
3723 const char *localport = qemu_opt_get(opts, "localport");
3724 bool has_local = false;
3725 SocketAddress *addr;
f194a1ae 3726 ChardevUdp *udp;
90a14bfe
PM		 3727
3728 if (host == NULL || strlen(host) == 0) {
3729 host = "localhost";
3730 }
3731 if (port == NULL || strlen(port) == 0) {
3732 error_setg(errp, "chardev: udp: remote port not specified");
3733 return;
3734 }
3735 if (localport == NULL || strlen(localport) == 0) {
3736 localport = "0";
3737 } else {
3738 has_local = true;
3739 }
3740 if (localaddr == NULL || strlen(localaddr) == 0) {
3741 localaddr = "";
3742 } else {
3743 has_local = true;
3744 }
3745
f194a1ae
EB		 3746 udp = backend->u.udp = g_new0(ChardevUdp, 1);
3747 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3748
3749 addr = g_new0(SocketAddress, 1);
130257dc 3750 addr->type = SOCKET_ADDRESS_KIND_INET;
0399293e
EB		 3751 addr->u.inet = g_new(InetSocketAddress, 1);
3752 *addr->u.inet = (InetSocketAddress) {
3753 .host = g_strdup(host),
3754 .port = g_strdup(port),
3755 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3756 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3757 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3758 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3759 };
f194a1ae 3760 udp->remote = addr;
90a14bfe
PM		 3761
3762 if (has_local) {
f194a1ae 3763 udp->has_local = true;
90a14bfe 3764 addr = g_new0(SocketAddress, 1);
130257dc 3765 addr->type = SOCKET_ADDRESS_KIND_INET;
0399293e
EB		 3766 addr->u.inet = g_new(InetSocketAddress, 1);
3767 *addr->u.inet = (InetSocketAddress) {
3768 .host = g_strdup(localaddr),
3769 .port = g_strdup(localport),
3770 };
f194a1ae 3771 udp->local = addr;
90a14bfe
PM		 3772 }
3773}
3774
d654f34e 3775typedef struct CharDriver {
191bc01b 3776 const char *name;
99aec012 3777 ChardevBackendKind kind;
2c5f4882 3778 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3779 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3780 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3781} CharDriver;
3782
3783static GSList *backends;
3784
e4d50d47 3785void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3786 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3787 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3788 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3789{
3790 CharDriver *s;
3791
3792 s = g_malloc0(sizeof(*s));
3793 s->name = g_strdup(name);
3794 s->kind = kind;
3795 s->parse = parse;
4ca17281 3796 s->create = create;
2c5f4882
GH		 3797
3798 backends = g_slist_append(backends, s);
3799}
3800
f69554b9 3801CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3802 void (*init)(struct CharDriverState *s),
3803 Error **errp)
191bc01b 3804{
0aff637e 3805 Error *local_err = NULL;
d654f34e 3806 CharDriver *cd;
191bc01b 3807 CharDriverState *chr;
d654f34e 3808 GSList *i;
a61ae7f8
PM		 3809 ChardevReturn *ret = NULL;
3810 ChardevBackend *backend;
3811 const char *id = qemu_opts_id(opts);
3812 char *bid = NULL;
191bc01b 3813
a61ae7f8 3814 if (id == NULL) {
312fd5f2 3815 error_setg(errp, "chardev: no id specified");
2274ae9d 3816 goto err;
191bc01b
GH		 3817 }
3818
1bbd185f 3819 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3820 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3821 qemu_opts_id(opts));
2274ae9d 3822 goto err;
1bbd185f 3823 }
d654f34e
AL		 3824 for (i = backends; i; i = i->next) {
3825 cd = i->data;
3826
3827 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3828 break;
d654f34e 3829 }
191bc01b 3830 }
d654f34e 3831 if (i == NULL) {
312fd5f2 3832 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3833 qemu_opt_get(opts, "backend"));
e668287d 3834 goto err;
191bc01b
GH		 3835 }
3836
a61ae7f8 3837 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3838
a61ae7f8
PM		 3839 if (qemu_opt_get_bool(opts, "mux", 0)) {
3840 bid = g_strdup_printf("%s-base", id);
3841 }
2c5f4882 3842
a61ae7f8 3843 chr = NULL;
130257dc 3844 backend->type = cd->kind;
a61ae7f8
PM		 3845 if (cd->parse) {
3846 cd->parse(opts, backend, &local_err);
3847 if (local_err) {
3848 error_propagate(errp, local_err);
2c5f4882
GH		 3849 goto qapi_out;
3850 }
d0d7708b
DB		 3851 } else {
3852 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3853 qemu_chr_parse_common(opts, cc);
b1918fbb 3854 backend->u.null = cc; /* Any ChardevCommon member would work */
2c5f4882 3855 }
d0d7708b 3856
a61ae7f8
PM		 3857 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3858 if (!ret) {
3859 goto qapi_out;
191bc01b
GH		 3860 }
3861
a61ae7f8
PM		 3862 if (bid) {
3863 qapi_free_ChardevBackend(backend);
3864 qapi_free_ChardevReturn(ret);
3865 backend = g_new0(ChardevBackend, 1);
130257dc
EB		 3866 backend->u.mux = g_new0(ChardevMux, 1);
3867 backend->type = CHARDEV_BACKEND_KIND_MUX;
3868 backend->u.mux->chardev = g_strdup(bid);
a61ae7f8
PM		 3869 ret = qmp_chardev_add(id, backend, errp);
3870 if (!ret) {
3871 chr = qemu_chr_find(bid);
3872 qemu_chr_delete(chr);
3873 chr = NULL;
3874 goto qapi_out;
3875 }
bd5c51ee 3876 }
7591c5c1 3877
a61ae7f8 3878 chr = qemu_chr_find(id);
2274ae9d 3879 chr->opts = opts;
a61ae7f8
PM		 3880
3881qapi_out:
3882 qapi_free_ChardevBackend(backend);
3883 qapi_free_ChardevReturn(ret);
3884 g_free(bid);
191bc01b 3885 return chr;
2274ae9d
GH		 3886
3887err:
3888 qemu_opts_del(opts);
3889 return NULL;
191bc01b
GH		 3890}
3891
33577b47
PD		 3892CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3893 void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3894{
3895 const char *p;
3896 CharDriverState *chr;
191bc01b 3897 QemuOpts *opts;
bd2d80b2 3898 Error *err = NULL;
191bc01b 3899
c845f401
GH		 3900 if (strstart(filename, "chardev:", &p)) {
3901 return qemu_chr_find(p);
3902 }
3903
191bc01b 3904 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3905 if (!opts)
3906 return NULL;
6f97dba0 3907
bd2d80b2 3908 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3909 if (err) {
565f65d2 3910 error_report_err(err);
bd2d80b2 3911 }
7e1b35b4 3912 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3913 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3914 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3915 }
3916 return chr;
3917}
3918
33577b47
PD		 3919CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3920{
3921 CharDriverState *chr;
3922 chr = qemu_chr_new_noreplay(label, filename, init);
3923 if (chr) {
3924 chr->replay = replay_mode != REPLAY_MODE_NONE;
3925 if (chr->replay && chr->chr_ioctl) {
3926 fprintf(stderr,
3927 "Replay: ioctl is not supported for serial devices yet\n");
3928 }
3929 replay_register_char_driver(chr);
3930 }
3931 return chr;
3932}
3933
15f31519 3934void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3935{
3936 if (chr->chr_set_echo) {
3937 chr->chr_set_echo(chr, echo);
3938 }
3939}
3940
8e25daa8 3941void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3942{
8e25daa8 3943 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3944 return;
3945 }
8e25daa8 3946 chr->fe_open = fe_open;
574b711a
HG		 3947 if (chr->chr_set_fe_open) {
3948 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3949 }
3950}
3951
d61b0c9a
MAL		 3952void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3953{
3954 if (chr->chr_fe_event) {
3955 chr->chr_fe_event(chr, event);
3956 }
3957}
3958
2c8a5942
KW		 3959int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3960 GIOFunc func, void *user_data)
23673ca7
AL		 3961{
3962 GSource *src;
3963 guint tag;
3964
3965 if (s->chr_add_watch == NULL) {
3966 return -ENOSYS;
3967 }
3968
3969 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3970 if (!src) {
3971 return -EINVAL;
3972 }
3973
23673ca7
AL		 3974 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3975 tag = g_source_attach(src, NULL);
3976 g_source_unref(src);
3977
3978 return tag;
3979}
3980
44c473de
HG		 3981int qemu_chr_fe_claim(CharDriverState *s)
3982{
3983 if (s->avail_connections < 1) {
3984 return -1;
3985 }
3986 s->avail_connections--;
3987 return 0;
3988}
3989
3990void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3991{
3992 if (qemu_chr_fe_claim(s) != 0) {
3993 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3994 __func__, s->label);
3995 exit(1);
3996 }
3997}
3998
3999void qemu_chr_fe_release(CharDriverState *s)
4000{
4001 s->avail_connections++;
4002}
4003
d0d7708b 4004static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4005{
7267c094
AL		 4006 g_free(chr->filename);
4007 g_free(chr->label);
4ad60880 4008 qemu_opts_del(chr->opts);
d0d7708b
DB		 4009 if (chr->logfd != -1) {
4010 close(chr->logfd);
4011 }
fefd749c 4012 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4013 g_free(chr);
6f97dba0
AL		 4014}
4015
d0d7708b
DB		 4016void qemu_chr_free(CharDriverState *chr)
4017{
4018 if (chr->chr_close) {
4019 chr->chr_close(chr);
4020 }
4021 qemu_chr_free_common(chr);
4022}
4023
1ad78ea5
MAL		 4024void qemu_chr_delete(CharDriverState *chr)
4025{
4026 QTAILQ_REMOVE(&chardevs, chr, next);
4027 qemu_chr_free(chr);
4028}
4029
c5a415a0 4030ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4031{
c5a415a0 4032 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4033 CharDriverState *chr;
4034
72cf2d4f 4035 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4036 ChardevInfoList *info = g_malloc0(sizeof(*info));
4037 info->value = g_malloc0(sizeof(*info->value));
4038 info->value->label = g_strdup(chr->label);
4039 info->value->filename = g_strdup(chr->filename);
32a97ea1 4040 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4041
4042 info->next = chr_list;
4043 chr_list = info;
6f97dba0 4044 }
588b3832 4045
c5a415a0 4046 return chr_list;
6f97dba0 4047}
c845f401 4048
77d1c3c6
MK		 4049ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4050{
4051 ChardevBackendInfoList *backend_list = NULL;
4052 CharDriver *c = NULL;
4053 GSList *i = NULL;
4054
4055 for (i = backends; i; i = i->next) {
4056 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4057 c = i->data;
4058 info->value = g_malloc0(sizeof(*info->value));
4059 info->value->name = g_strdup(c->name);
4060
4061 info->next = backend_list;
4062 backend_list = info;
4063 }
4064
4065 return backend_list;
4066}
4067
c845f401
GH		 4068CharDriverState *qemu_chr_find(const char *name)
4069{
4070 CharDriverState *chr;
4071
72cf2d4f 4072 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4073 if (strcmp(chr->label, name) != 0)
4074 continue;
4075 return chr;
4076 }
4077 return NULL;
4078}
0beb4942
AL		 4079
4080/* Get a character (serial) device interface. */
4081CharDriverState *qemu_char_get_next_serial(void)
4082{
4083 static int next_serial;
456d6069 4084 CharDriverState *chr;
0beb4942
AL		 4085
4086 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 4087
4088 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4089 chr = serial_hds[next_serial++];
4090 qemu_chr_fe_claim_no_fail(chr);
4091 return chr;
4092 }
4093 return NULL;
0beb4942
AL		 4094}
4095
4d454574
PB		 4096QemuOptsList qemu_chardev_opts = {
4097 .name = "chardev",
4098 .implied_opt_name = "backend",
4099 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4100 .desc = {
4101 {
4102 .name = "backend",
4103 .type = QEMU_OPT_STRING,
4104 },{
4105 .name = "path",
4106 .type = QEMU_OPT_STRING,
4107 },{
4108 .name = "host",
4109 .type = QEMU_OPT_STRING,
4110 },{
4111 .name = "port",
4112 .type = QEMU_OPT_STRING,
4113 },{
4114 .name = "localaddr",
4115 .type = QEMU_OPT_STRING,
4116 },{
4117 .name = "localport",
4118 .type = QEMU_OPT_STRING,
4119 },{
4120 .name = "to",
4121 .type = QEMU_OPT_NUMBER,
4122 },{
4123 .name = "ipv4",
4124 .type = QEMU_OPT_BOOL,
4125 },{
4126 .name = "ipv6",
4127 .type = QEMU_OPT_BOOL,
4128 },{
4129 .name = "wait",
4130 .type = QEMU_OPT_BOOL,
4131 },{
4132 .name = "server",
4133 .type = QEMU_OPT_BOOL,
4134 },{
4135 .name = "delay",
4136 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4137 },{
4138 .name = "reconnect",
4139 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4140 },{
4141 .name = "telnet",
4142 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4143 },{
4144 .name = "tls-creds",
4145 .type = QEMU_OPT_STRING,
4d454574
PB		 4146 },{
4147 .name = "width",
4148 .type = QEMU_OPT_NUMBER,
4149 },{
4150 .name = "height",
4151 .type = QEMU_OPT_NUMBER,
4152 },{
4153 .name = "cols",
4154 .type = QEMU_OPT_NUMBER,
4155 },{
4156 .name = "rows",
4157 .type = QEMU_OPT_NUMBER,
4158 },{
4159 .name = "mux",
4160 .type = QEMU_OPT_BOOL,
4161 },{
4162 .name = "signal",
4163 .type = QEMU_OPT_BOOL,
4164 },{
4165 .name = "name",
4166 .type = QEMU_OPT_STRING,
4167 },{
4168 .name = "debug",
4169 .type = QEMU_OPT_NUMBER,
51767e7c 4170 },{
3949e594 4171 .name = "size",
de1cc36e 4172 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4173 },{
4174 .name = "chardev",
4175 .type = QEMU_OPT_STRING,
31e38a22
OK		 4176 },{
4177 .name = "append",
4178 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4179 },{
4180 .name = "logfile",
4181 .type = QEMU_OPT_STRING,
4182 },{
4183 .name = "logappend",
4184 .type = QEMU_OPT_BOOL,
4d454574
PB		 4185 },
4186 { /* end of list */ }
4187 },
4188};
f1a1a356 4189
ffbdbe59
GH		 4190#ifdef _WIN32
4191
fd5b036c
PB		 4192static CharDriverState *qmp_chardev_open_file(const char *id,
4193 ChardevBackend *backend,
4194 ChardevReturn *ret,
4195 Error **errp)
ffbdbe59 4196{
130257dc 4197 ChardevFile *file = backend->u.file;
f194a1ae 4198 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59
GH		 4199 HANDLE out;
4200
e859eda5 4201 if (file->has_in) {
ffbdbe59
GH		 4202 error_setg(errp, "input file not supported");
4203 return NULL;
4204 }
4205
4206 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4207 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4208 if (out == INVALID_HANDLE_VALUE) {
4209 error_setg(errp, "open %s failed", file->out);
4210 return NULL;
4211 }
d0d7708b 4212 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4213}
4214
6511d396
PB		 4215static CharDriverState *qmp_chardev_open_serial(const char *id,
4216 ChardevBackend *backend,
4217 ChardevReturn *ret,
d36b2b90 4218 Error **errp)
d59044ef 4219{
130257dc 4220 ChardevHostdev *serial = backend->u.serial;
f194a1ae 4221 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4222 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4223}
4224
ffbdbe59
GH		 4225#else /* WIN32 */
4226
4227static int qmp_chardev_open_file_source(char *src, int flags,
4228 Error **errp)
4229{
4230 int fd = -1;
4231
4232 TFR(fd = qemu_open(src, flags, 0666));
4233 if (fd == -1) {
20c39760 4234 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4235 }
4236 return fd;
4237}
4238
fd5b036c
PB		 4239static CharDriverState *qmp_chardev_open_file(const char *id,
4240 ChardevBackend *backend,
4241 ChardevReturn *ret,
4242 Error **errp)
ffbdbe59 4243{
130257dc 4244 ChardevFile *file = backend->u.file;
f194a1ae 4245 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4246 int flags, in = -1, out;
ffbdbe59 4247
31e38a22
OK		 4248 flags = O_WRONLY | O_CREAT | O_BINARY;
4249 if (file->has_append && file->append) {
4250 flags |= O_APPEND;
4251 } else {
4252 flags |= O_TRUNC;
4253 }
4254
ffbdbe59 4255 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4256 if (out < 0) {
ffbdbe59
GH		 4257 return NULL;
4258 }
4259
e859eda5 4260 if (file->has_in) {
ffbdbe59
GH		 4261 flags = O_RDONLY;
4262 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4263 if (in < 0) {
ffbdbe59
GH		 4264 qemu_close(out);
4265 return NULL;
4266 }
4267 }
4268
d0d7708b 4269 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4270}
4271
d809ab95 4272#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4273static CharDriverState *qmp_chardev_open_serial(const char *id,
4274 ChardevBackend *backend,
4275 ChardevReturn *ret,
d36b2b90 4276 Error **errp)
d59044ef 4277{
130257dc 4278 ChardevHostdev *serial = backend->u.serial;
f194a1ae 4279 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4280 int fd;
4281
4282 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4283 if (fd < 0) {
d36b2b90 4284 return NULL;
39099991 4285 }
f9e8cacc 4286 qemu_set_nonblock(fd);
d0d7708b 4287 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4288}
6511d396 4289#endif
d36b2b90 4290
d809ab95 4291#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4292static CharDriverState *qmp_chardev_open_parallel(const char *id,
4293 ChardevBackend *backend,
4294 ChardevReturn *ret,
d36b2b90
MA		 4295 Error **errp)
4296{
130257dc 4297 ChardevHostdev *parallel = backend->u.parallel;
f194a1ae 4298 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4299 int fd;
4300
4301 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4302 if (fd < 0) {
d59044ef
GH		 4303 return NULL;
4304 }
d0d7708b 4305 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4306}
d809ab95 4307#endif
d59044ef 4308
ffbdbe59
GH		 4309#endif /* WIN32 */
4310
5dd1f02b
CM		 4311static gboolean socket_reconnect_timeout(gpointer opaque)
4312{
4313 CharDriverState *chr = opaque;
4314 TCPCharDriver *s = chr->opaque;
317856ca 4315 QIOChannelSocket *sioc;
5dd1f02b
CM		 4316
4317 s->reconnect_timer = 0;
4318
4319 if (chr->be_open) {
4320 return false;
4321 }
4322
317856ca
DB		 4323 sioc = qio_channel_socket_new();
4324 qio_channel_socket_connect_async(sioc, s->addr,
4325 qemu_chr_socket_connected,
4326 chr, NULL);
5dd1f02b
CM		 4327
4328 return false;
4329}
4330
dbba8d1b
PB		 4331static CharDriverState *qmp_chardev_open_socket(const char *id,
4332 ChardevBackend *backend,
4333 ChardevReturn *ret,
f6bd5d6e
GH		 4334 Error **errp)
4335{
43ded1a0
CM		 4336 CharDriverState *chr;
4337 TCPCharDriver *s;
130257dc 4338 ChardevSocket *sock = backend->u.socket;
f6bd5d6e
GH		 4339 SocketAddress *addr = sock->addr;
4340 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4341 bool is_listen = sock->has_server ? sock->server : true;
4342 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4343 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4344 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4345 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4346 QIOChannelSocket *sioc = NULL;
43ded1a0 4347
d0d7708b
DB		 4348 chr = qemu_chr_alloc(common, errp);
4349 if (!chr) {
4350 return NULL;
4351 }
2d528d45 4352 s = g_new0(TCPCharDriver, 1);
43ded1a0 4353
130257dc 4354 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4355 s->is_listen = is_listen;
4356 s->is_telnet = is_telnet;
43ded1a0 4357 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4358 if (sock->tls_creds) {
4359 Object *creds;
4360 creds = object_resolve_path_component(
4361 object_get_objects_root(), sock->tls_creds);
4362 if (!creds) {
4363 error_setg(errp, "No TLS credentials with id '%s'",
4364 sock->tls_creds);
4365 goto error;
4366 }
4367 s->tls_creds = (QCryptoTLSCreds *)
4368 object_dynamic_cast(creds,
4369 TYPE_QCRYPTO_TLS_CREDS);
4370 if (!s->tls_creds) {
4371 error_setg(errp, "Object with id '%s' is not TLS credentials",
4372 sock->tls_creds);
4373 goto error;
4374 }
4375 object_ref(OBJECT(s->tls_creds));
4376 if (is_listen) {
4377 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4378 error_setg(errp, "%s",
4379 "Expected TLS credentials for server endpoint");
4380 goto error;
4381 }
4382 } else {
4383 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4384 error_setg(errp, "%s",
4385 "Expected TLS credentials for client endpoint");
4386 goto error;
4387 }
4388 }
4389 }
4390
cfb429cb 4391 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4392
4393 chr->opaque = s;
4394 chr->chr_write = tcp_chr_write;
4395 chr->chr_sync_read = tcp_chr_sync_read;
4396 chr->chr_close = tcp_chr_close;
4397 chr->get_msgfds = tcp_get_msgfds;
4398 chr->set_msgfds = tcp_set_msgfds;
4399 chr->chr_add_client = tcp_chr_add_client;
4400 chr->chr_add_watch = tcp_chr_add_watch;
4401 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4402 /* be isn't opened until we get a connection */
4403 chr->explicit_be_open = true;
4404
0ff0fad2
DB		 4405 chr->filename = SocketAddress_to_str("disconnected:",
4406 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4407
4408 if (is_listen) {
43ded1a0
CM		 4409 if (is_telnet) {
4410 s->do_telnetopt = 1;
4411 }
5dd1f02b
CM		 4412 } else if (reconnect > 0) {
4413 s->reconnect_time = reconnect;
f6bd5d6e 4414 }
43ded1a0 4415
08b758b4 4416 sioc = qio_channel_socket_new();
5008e5b7 4417 if (s->reconnect_time) {
317856ca
DB		 4418 qio_channel_socket_connect_async(sioc, s->addr,
4419 qemu_chr_socket_connected,
4420 chr, NULL);
08b758b4
DB		 4421 } else if (s->is_listen) {
4422 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4423 goto error;
4424 }
4425 s->listen_ioc = sioc;
4426 if (is_waitconnect) {
4427 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4428 chr->filename);
4429 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4430 }
9894dc0c 4431 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
08b758b4
DB		 4432 if (!s->ioc) {
4433 s->listen_tag = qio_channel_add_watch(
4434 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
4435 }
4436 } else {
4437 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
4438 goto error;
4439 }
4440 tcp_chr_new_client(chr, sioc);
4441 object_unref(OBJECT(sioc));
43ded1a0
CM		 4442 }
4443
4444 return chr;
a8fb5427
DB		 4445
4446 error:
08b758b4
DB		 4447 if (sioc) {
4448 object_unref(OBJECT(sioc));
4449 }
a8fb5427
DB		 4450 if (s->tls_creds) {
4451 object_unref(OBJECT(s->tls_creds));
4452 }
4453 g_free(s);
4454 qemu_chr_free_common(chr);
4455 return NULL;
f6bd5d6e
GH		 4456}
4457
e79b80da
PB		 4458static CharDriverState *qmp_chardev_open_udp(const char *id,
4459 ChardevBackend *backend,
4460 ChardevReturn *ret,
08d0ab3f 4461 Error **errp)
3ecc059d 4462{
130257dc 4463 ChardevUdp *udp = backend->u.udp;
f194a1ae 4464 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4465 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4466
9894dc0c 4467 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4468 udp->local, udp->remote,
9894dc0c
DB		 4469 errp) < 0) {
4470 object_unref(OBJECT(sioc));
3ecc059d
GH		 4471 return NULL;
4472 }
9894dc0c 4473 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4474}
4475
f1a1a356
GH		 4476ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4477 Error **errp)
4478{
4479 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4480 CharDriverState *chr = NULL;
eaeba653 4481 Error *local_err = NULL;
4ca17281
PB		 4482 GSList *i;
4483 CharDriver *cd;
f1a1a356
GH		 4484
4485 chr = qemu_chr_find(id);
4486 if (chr) {
4487 error_setg(errp, "Chardev '%s' already exists", id);
4488 g_free(ret);
4489 return NULL;
4490 }
4491
4ca17281
PB		 4492 for (i = backends; i; i = i->next) {
4493 cd = i->data;
4494
130257dc 4495 if (cd->kind == backend->type) {
4ca17281
PB		 4496 chr = cd->create(id, backend, ret, &local_err);
4497 if (local_err) {
4498 error_propagate(errp, local_err);
4499 goto out_error;
4500 }
4501 break;
4502 }
4503 }
4504
4505 if (chr == NULL) {
1c3af0f4
PB		 4506 assert(!i);
4507 error_setg(errp, "chardev backend not available");
4508 goto out_error;
eaeba653
PB		 4509 }
4510
4511 chr->label = g_strdup(id);
4512 chr->avail_connections =
130257dc 4513 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4514 if (!chr->filename) {
130257dc 4515 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4516 }
eaeba653
PB		 4517 if (!chr->explicit_be_open) {
4518 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4519 }
4520 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4521 return ret;
4522
4523out_error:
4524 g_free(ret);
4525 return NULL;
f1a1a356
GH		 4526}
4527
4528void qmp_chardev_remove(const char *id, Error **errp)
4529{
4530 CharDriverState *chr;
4531
4532 chr = qemu_chr_find(id);
8108fd3e 4533 if (chr == NULL) {
f1a1a356
GH		 4534 error_setg(errp, "Chardev '%s' not found", id);
4535 return;
4536 }
4537 if (chr->chr_can_read || chr->chr_read ||
4538 chr->chr_event || chr->handler_opaque) {
4539 error_setg(errp, "Chardev '%s' is busy", id);
4540 return;
4541 }
33577b47
PD		 4542 if (chr->replay) {
4543 error_setg(errp,
4544 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4545 return;
4546 }
f1a1a356
GH		 4547 qemu_chr_delete(chr);
4548}
d654f34e
AL		 4549
4550static void register_types(void)
4551{
4ca17281 4552 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4553 qemu_chr_open_null);
e4d50d47 4554 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4555 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4556 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4557 qmp_chardev_open_udp);
e4d50d47 4558 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4559 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4560 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4561 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4562 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4563 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4564#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4565 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4566 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4567 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4568 qemu_chr_parse_serial, qmp_chardev_open_serial);
4569#endif
38bfb1a6 4570#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4571 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4572 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4573 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4574 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4575#endif
c2e75a43 4576#ifdef HAVE_CHARDEV_PTY
4ca17281 4577 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4578 qemu_chr_open_pty);
4579#endif
122e5ed4 4580#ifdef _WIN32
4ca17281 4581 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4582 qemu_chr_open_win_con);
4583#endif
e4d50d47 4584 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4585 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4586 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4587 qemu_chr_open_mux);
c11ed966 4588 /* Bug-compatibility: */
e4d50d47 4589 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4590 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4591 /* this must be done after machine init, since we register FEs with muxes
4592 * as part of realize functions like serial_isa_realizefn when -nographic
4593 * is specified
4594 */
4595 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4596}
4597
4598type_init(register_types);
Empty description
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