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util: move declarations out of qemu-common.h
[mirror_qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
cfb429cb
CM		 35#include "qapi/qmp-input-visitor.h"
36#include "qapi/qmp-output-visitor.h"
37#include "qapi-visit.h"
e9cf2fe0 38#include "qemu/base64.h"
9894dc0c
DB		 39#include "io/channel-socket.h"
40#include "io/channel-file.h"
a8fb5427 41#include "io/channel-tls.h"
33577b47 42#include "sysemu/replay.h"
6f97dba0 43
6f97dba0
AL		 44#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
50#include <sys/mman.h>
51#include <sys/ioctl.h>
24646c7e 52#include <sys/resource.h>
6f97dba0
AL		 53#include <sys/socket.h>
54#include <netinet/in.h>
24646c7e 55#include <net/if.h>
24646c7e 56#include <arpa/inet.h>
6f97dba0
AL		 57#include <netdb.h>
58#include <sys/select.h>
71e72a19 59#ifdef CONFIG_BSD
3294ce18
MT		 60#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61#include <dev/ppbus/ppi.h>
62#include <dev/ppbus/ppbconf.h>
c5e97233 63#elif defined(__DragonFly__)
c5e97233
BS		 64#include <dev/misc/ppi/ppi.h>
65#include <bus/ppbus/ppbconf.h>
6f97dba0 66#endif
bbe813a2 67#else
6f97dba0 68#ifdef __linux__
6f97dba0
AL		 69#include <linux/ppdev.h>
70#include <linux/parport.h>
71#endif
72#ifdef __sun__
6f97dba0
AL		 73#include <sys/ethernet.h>
74#include <sys/sockio.h>
75#include <netinet/arp.h>
76#include <netinet/in.h>
77#include <netinet/in_systm.h>
78#include <netinet/ip.h>
79#include <netinet/ip_icmp.h> // must come after ip.h
80#include <netinet/udp.h>
81#include <netinet/tcp.h>
6f97dba0
AL		 82#endif
83#endif
84#endif
85
1de7afc9 86#include "qemu/sockets.h"
cbcc6336 87#include "ui/qemu-spice.h"
6f97dba0 88
9bd7854e 89#define READ_BUF_LEN 4096
7b0bfdf5 90#define READ_RETRIES 10
c4095726 91#define TCP_MAX_FDS 16
9bd7854e 92
cfb429cb
CM		 93/***********************************************************/
94/* Socket address helpers */
cfb429cb 95
0ff0fad2
DB		 96static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
97 bool is_listen, bool is_telnet)
16cc4ffe 98{
130257dc 99 switch (addr->type) {
16cc4ffe 100 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 101 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 102 is_telnet ? "telnet" : "tcp",
103 addr->u.inet.data->host,
104 addr->u.inet.data->port,
105 is_listen ? ",server" : "");
16cc4ffe
CM		 106 break;
107 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 108 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 109 addr->u.q_unix.data->path,
0ff0fad2 110 is_listen ? ",server" : "");
16cc4ffe
CM		 111 break;
112 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 113 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 114 is_listen ? ",server" : "");
16cc4ffe
CM		 115 break;
116 default:
117 abort();
118 }
119}
120
0ff0fad2
DB		 121static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
122 struct sockaddr_storage *ps, socklen_t ps_len,
123 bool is_listen, bool is_telnet)
16cc4ffe 124{
01ca519f
CM		 125 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
126 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 127 const char *left = "", *right = "";
128
129 switch (ss->ss_family) {
130#ifndef _WIN32
131 case AF_UNIX:
0ff0fad2
DB		 132 return g_strdup_printf("unix:%s%s",
133 ((struct sockaddr_un *)(ss))->sun_path,
134 is_listen ? ",server" : "");
16cc4ffe
CM		 135#endif
136 case AF_INET6:
137 left = "[";
138 right = "]";
139 /* fall through */
140 case AF_INET:
01ca519f
CM		 141 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
142 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
143 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
144 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 145 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
146 is_telnet ? "telnet" : "tcp",
147 left, shost, right, sserv,
148 is_listen ? ",server" : "",
149 left, phost, right, pserv);
16cc4ffe
CM		 150
151 default:
0ff0fad2 152 return g_strdup_printf("unknown");
16cc4ffe
CM		 153 }
154}
155
6f97dba0
AL		 156/***********************************************************/
157/* character device */
158
72cf2d4f
BS		 159static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
160 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 161
d0d7708b
DB		 162static void qemu_chr_free_common(CharDriverState *chr);
163
164CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 165{
166 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 167 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 168
169 if (backend->has_logfile) {
170 int flags = O_WRONLY | O_CREAT;
171 if (backend->has_logappend &&
172 backend->logappend) {
173 flags |= O_APPEND;
174 } else {
175 flags |= O_TRUNC;
176 }
177 chr->logfd = qemu_open(backend->logfile, flags, 0666);
178 if (chr->logfd < 0) {
179 error_setg_errno(errp, errno,
180 "Unable to open logfile %s",
181 backend->logfile);
182 g_free(chr);
183 return NULL;
184 }
185 } else {
186 chr->logfd = -1;
187 }
188
db39fcf1
PB		 189 return chr;
190}
191
a425d23f 192void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 193{
73cdf3f2
AG		 194 /* Keep track if the char device is open */
195 switch (event) {
196 case CHR_EVENT_OPENED:
16665b94 197 s->be_open = 1;
73cdf3f2
AG		 198 break;
199 case CHR_EVENT_CLOSED:
16665b94 200 s->be_open = 0;
73cdf3f2
AG		 201 break;
202 }
203
6f97dba0
AL		 204 if (!s->chr_event)
205 return;
206 s->chr_event(s->handler_opaque, event);
207}
208
fee204fd 209void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 210{
bd5c51ee 211 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 212}
213
d0d7708b
DB		 214
215/* Not reporting errors from writing to logfile, as logs are
216 * defined to be "best effort" only */
217static void qemu_chr_fe_write_log(CharDriverState *s,
218 const uint8_t *buf, size_t len)
219{
220 size_t done = 0;
221 ssize_t ret;
222
223 if (s->logfd < 0) {
224 return;
225 }
226
227 while (done < len) {
228 do {
229 ret = write(s->logfd, buf + done, len - done);
230 if (ret == -1 && errno == EAGAIN) {
231 g_usleep(100);
232 }
233 } while (ret == -1 && errno == EAGAIN);
234
235 if (ret <= 0) {
236 return;
237 }
238 done += ret;
239 }
240}
241
33577b47
PD		 242static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
243{
244 int res = 0;
245 *offset = 0;
246
247 qemu_mutex_lock(&s->chr_write_lock);
248 while (*offset < len) {
249 do {
250 res = s->chr_write(s, buf + *offset, len - *offset);
251 if (res == -1 && errno == EAGAIN) {
252 g_usleep(100);
253 }
254 } while (res == -1 && errno == EAGAIN);
255
256 if (res <= 0) {
257 break;
258 }
259
260 *offset += res;
261 }
262 if (*offset > 0) {
263 qemu_chr_fe_write_log(s, buf, *offset);
264 }
265 qemu_mutex_unlock(&s->chr_write_lock);
266
267 return res;
268}
269
2cc6e0a1 270int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 271{
9005b2a7
PB		 272 int ret;
273
33577b47
PD		 274 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
275 int offset;
276 replay_char_write_event_load(&ret, &offset);
277 assert(offset <= len);
278 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
279 return ret;
280 }
281
9005b2a7
PB		 282 qemu_mutex_lock(&s->chr_write_lock);
283 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 284
285 if (ret > 0) {
286 qemu_chr_fe_write_log(s, buf, ret);
287 }
288
9005b2a7 289 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 290
291 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
292 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
293 }
294
9005b2a7 295 return ret;
6f97dba0
AL		 296}
297
cd18720a
AL		 298int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
299{
33577b47
PD		 300 int offset;
301 int res;
cd18720a 302
33577b47
PD		 303 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
304 replay_char_write_event_load(&res, &offset);
305 assert(offset <= len);
306 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
307 return res;
308 }
cd18720a 309
33577b47 310 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 311
33577b47
PD		 312 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
313 replay_char_write_event_save(res, offset);
cd18720a
AL		 314 }
315
9005b2a7
PB		 316 if (res < 0) {
317 return res;
318 }
cd18720a
AL		 319 return offset;
320}
321
7b0bfdf5
NN		 322int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
323{
324 int offset = 0, counter = 10;
325 int res;
326
327 if (!s->chr_sync_read) {
328 return 0;
329 }
33577b47
PD		 330
331 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
332 return replay_char_read_all_load(buf);
333 }
7b0bfdf5
NN		 334
335 while (offset < len) {
336 do {
337 res = s->chr_sync_read(s, buf + offset, len - offset);
338 if (res == -1 && errno == EAGAIN) {
339 g_usleep(100);
340 }
341 } while (res == -1 && errno == EAGAIN);
342
343 if (res == 0) {
344 break;
345 }
346
347 if (res < 0) {
33577b47
PD		 348 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
349 replay_char_read_all_save_error(res);
350 }
7b0bfdf5
NN		 351 return res;
352 }
353
354 offset += res;
355
356 if (!counter--) {
357 break;
358 }
359 }
360
33577b47
PD		 361 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
362 replay_char_read_all_save_buf(buf, offset);
363 }
7b0bfdf5
NN		 364 return offset;
365}
366
41084f1b 367int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0 368{
33577b47
PD		 369 int res;
370 if (!s->chr_ioctl || s->replay) {
371 res = -ENOTSUP;
372 } else {
373 res = s->chr_ioctl(s, cmd, arg);
374 }
375
376 return res;
6f97dba0
AL		 377}
378
909cda12 379int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 380{
381 if (!s->chr_can_read)
382 return 0;
383 return s->chr_can_read(s->handler_opaque);
384}
385
33577b47 386void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 387{
ac310734
SW		 388 if (s->chr_read) {
389 s->chr_read(s->handler_opaque, buf, len);
390 }
6f97dba0
AL		 391}
392
33577b47
PD		 393void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
394{
395 if (s->replay) {
396 if (replay_mode == REPLAY_MODE_PLAY) {
397 return;
398 }
399 replay_chr_be_write(s, buf, len);
400 } else {
401 qemu_chr_be_write_impl(s, buf, len);
402 }
403}
404
74c0d6f0 405int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 406{
c76bf6bb 407 int fd;
33577b47
PD		 408 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
409 if (s->replay) {
410 fprintf(stderr,
411 "Replay: get msgfd is not supported for serial devices yet\n");
412 exit(1);
413 }
414 return res;
c76bf6bb
NN		 415}
416
417int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
418{
419 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 420}
421
d39aac7a
NN		 422int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
423{
424 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
425}
426
13661089
DB		 427int qemu_chr_add_client(CharDriverState *s, int fd)
428{
429 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
430}
431
6f97dba0
AL		 432void qemu_chr_accept_input(CharDriverState *s)
433{
434 if (s->chr_accept_input)
435 s->chr_accept_input(s);
98c8ee1d 436 qemu_notify_event();
6f97dba0
AL		 437}
438
e7e71b0e 439void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 440{
9bd7854e 441 char buf[READ_BUF_LEN];
6f97dba0
AL		 442 va_list ap;
443 va_start(ap, fmt);
444 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 445 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 446 va_end(ap);
447}
448
386a5a1e
AS		 449static void remove_fd_in_watch(CharDriverState *chr);
450
6f97dba0 451void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 452 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 453 IOReadHandler *fd_read,
454 IOEventHandler *fd_event,
455 void *opaque)
456{
19083228
HG		 457 int fe_open;
458
da7d998b 459 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 460 fe_open = 0;
386a5a1e 461 remove_fd_in_watch(s);
19083228
HG		 462 } else {
463 fe_open = 1;
2d6c1ef4 464 }
6f97dba0
AL		 465 s->chr_can_read = fd_can_read;
466 s->chr_read = fd_read;
467 s->chr_event = fd_event;
468 s->handler_opaque = opaque;
ac1b84dd 469 if (fe_open && s->chr_update_read_handler)
6f97dba0 470 s->chr_update_read_handler(s);
73cdf3f2 471
19083228 472 if (!s->explicit_fe_open) {
8e25daa8 473 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 474 }
475
73cdf3f2
AG		 476 /* We're connecting to an already opened device, so let's make sure we
477 also get the open event */
a59bcd31 478 if (fe_open && s->be_open) {
fee204fd 479 qemu_chr_be_generic_open(s);
73cdf3f2 480 }
6f97dba0
AL		 481}
482
483static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
484{
485 return len;
486}
487
0d64992b
PB		 488static CharDriverState *qemu_chr_open_null(const char *id,
489 ChardevBackend *backend,
490 ChardevReturn *ret,
491 Error **errp)
6f97dba0
AL		 492{
493 CharDriverState *chr;
32bafa8f 494 ChardevCommon *common = backend->u.null.data;
6f97dba0 495
d0d7708b
DB		 496 chr = qemu_chr_alloc(common, errp);
497 if (!chr) {
498 return NULL;
499 }
6f97dba0 500 chr->chr_write = null_chr_write;
bd5c51ee 501 chr->explicit_be_open = true;
1f51470d 502 return chr;
6f97dba0
AL		 503}
504
505/* MUX driver for serial I/O splitting */
6f97dba0
AL		 506#define MAX_MUX 4
507#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
508#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
509typedef struct {
7b27a769 510 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 511 IOReadHandler *chr_read[MAX_MUX];
512 IOEventHandler *chr_event[MAX_MUX];
513 void *ext_opaque[MAX_MUX];
514 CharDriverState *drv;
799f1f23 515 int focus;
6f97dba0
AL		 516 int mux_cnt;
517 int term_got_escape;
518 int max_size;
a80bf99f
AL		 519 /* Intermediate input buffer allows to catch escape sequences even if the
520 currently active device is not accepting any input - but only until it
521 is full as well. */
522 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
523 int prod[MAX_MUX];
524 int cons[MAX_MUX];
2d22959d 525 int timestamps;
9005b2a7
PB		 526
527 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 528 int linestart;
2d22959d 529 int64_t timestamps_start;
6f97dba0
AL		 530} MuxDriver;
531
532
9005b2a7 533/* Called with chr_write_lock held. */
6f97dba0
AL		 534static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
535{
536 MuxDriver *d = chr->opaque;
537 int ret;
2d22959d 538 if (!d->timestamps) {
6975b713 539 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 540 } else {
541 int i;
542
543 ret = 0;
4ab312f7
JK		 544 for (i = 0; i < len; i++) {
545 if (d->linestart) {
6f97dba0
AL		 546 char buf1[64];
547 int64_t ti;
548 int secs;
549
bc72ad67 550 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 551 if (d->timestamps_start == -1)
552 d->timestamps_start = ti;
553 ti -= d->timestamps_start;
a4bb1db8 554 secs = ti / 1000;
6f97dba0
AL		 555 snprintf(buf1, sizeof(buf1),
556 "[%02d:%02d:%02d.%03d] ",
557 secs / 3600,
558 (secs / 60) % 60,
559 secs % 60,
a4bb1db8 560 (int)(ti % 1000));
6975b713 561 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 562 d->linestart = 0;
563 }
6975b713 564 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 565 if (buf[i] == '\n') {
566 d->linestart = 1;
6f97dba0
AL		 567 }
568 }
569 }
570 return ret;
571}
572
573static const char * const mux_help[] = {
574 "% h print this help\n\r",
575 "% x exit emulator\n\r",
576 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 577 "% t toggle console timestamps\n\r",
6f97dba0
AL		 578 "% b send break (magic sysrq)\n\r",
579 "% c switch between console and monitor\n\r",
580 "% % sends %\n\r",
581 NULL
582};
583
584int term_escape_char = 0x01; /* ctrl-a is used for escape */
585static void mux_print_help(CharDriverState *chr)
586{
587 int i, j;
588 char ebuf[15] = "Escape-Char";
589 char cbuf[50] = "\n\r";
590
591 if (term_escape_char > 0 && term_escape_char < 26) {
592 snprintf(cbuf, sizeof(cbuf), "\n\r");
593 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
594 } else {
595 snprintf(cbuf, sizeof(cbuf),
596 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
597 term_escape_char);
598 }
6975b713 599 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 600 for (i = 0; mux_help[i] != NULL; i++) {
601 for (j=0; mux_help[i][j] != '\0'; j++) {
602 if (mux_help[i][j] == '%')
6975b713 603 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 604 else
6975b713 605 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 606 }
607 }
608}
609
2724b180
AL		 610static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
611{
612 if (d->chr_event[mux_nr])
613 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
614}
615
6f97dba0
AL		 616static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
617{
618 if (d->term_got_escape) {
619 d->term_got_escape = 0;
620 if (ch == term_escape_char)
621 goto send_char;
622 switch(ch) {
623 case '?':
624 case 'h':
625 mux_print_help(chr);
626 break;
627 case 'x':
628 {
629 const char *term = "QEMU: Terminated\n\r";
6975b713 630 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 631 exit(0);
632 break;
633 }
634 case 's':
da31d594 635 blk_commit_all();
6f97dba0
AL		 636 break;
637 case 'b':
a425d23f 638 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 639 break;
640 case 'c':
641 /* Switch to the next registered device */
799f1f23
GH		 642 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
643 d->focus++;
644 if (d->focus >= d->mux_cnt)
645 d->focus = 0;
646 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 647 break;
2d22959d
JK		 648 case 't':
649 d->timestamps = !d->timestamps;
650 d->timestamps_start = -1;
4ab312f7 651 d->linestart = 0;
2d22959d 652 break;
6f97dba0
AL		 653 }
654 } else if (ch == term_escape_char) {
655 d->term_got_escape = 1;
656 } else {
657 send_char:
658 return 1;
659 }
660 return 0;
661}
662
663static void mux_chr_accept_input(CharDriverState *chr)
664{
6f97dba0 665 MuxDriver *d = chr->opaque;
799f1f23 666 int m = d->focus;
6f97dba0 667
a80bf99f 668 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 669 d->chr_can_read[m] &&
670 d->chr_can_read[m](d->ext_opaque[m])) {
671 d->chr_read[m](d->ext_opaque[m],
a80bf99f 672 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 673 }
674}
675
676static int mux_chr_can_read(void *opaque)
677{
678 CharDriverState *chr = opaque;
679 MuxDriver *d = chr->opaque;
799f1f23 680 int m = d->focus;
6f97dba0 681
a80bf99f 682 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 683 return 1;
a80bf99f
AL		 684 if (d->chr_can_read[m])
685 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 686 return 0;
687}
688
689static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
690{
691 CharDriverState *chr = opaque;
692 MuxDriver *d = chr->opaque;
799f1f23 693 int m = d->focus;
6f97dba0
AL		 694 int i;
695
696 mux_chr_accept_input (opaque);
697
698 for(i = 0; i < size; i++)
699 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 700 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 701 d->chr_can_read[m] &&
702 d->chr_can_read[m](d->ext_opaque[m]))
703 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
704 else
a80bf99f 705 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 706 }
707}
708
709static void mux_chr_event(void *opaque, int event)
710{
711 CharDriverState *chr = opaque;
712 MuxDriver *d = chr->opaque;
713 int i;
714
715 /* Send the event to all registered listeners */
716 for (i = 0; i < d->mux_cnt; i++)
2724b180 717 mux_chr_send_event(d, i, event);
6f97dba0
AL		 718}
719
720static void mux_chr_update_read_handler(CharDriverState *chr)
721{
722 MuxDriver *d = chr->opaque;
723
724 if (d->mux_cnt >= MAX_MUX) {
725 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
726 return;
727 }
728 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
729 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
730 d->chr_read[d->mux_cnt] = chr->chr_read;
731 d->chr_event[d->mux_cnt] = chr->chr_event;
732 /* Fix up the real driver with mux routines */
733 if (d->mux_cnt == 0) {
734 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
735 mux_chr_event, chr);
736 }
799f1f23
GH		 737 if (d->focus != -1) {
738 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 739 }
799f1f23 740 d->focus = d->mux_cnt;
6f97dba0 741 d->mux_cnt++;
799f1f23 742 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 743}
744
7b7ab18d
MR		 745static bool muxes_realized;
746
747/**
748 * Called after processing of default and command-line-specified
749 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
750 * to a mux chardev. This is done here to ensure that
751 * output/prompts/banners are only displayed for the FE that has
752 * focus when initial command-line processing/machine init is
753 * completed.
754 *
755 * After this point, any new FE attached to any new or existing
756 * mux will receive CHR_EVENT_OPENED notifications for the BE
757 * immediately.
758 */
759static void muxes_realize_done(Notifier *notifier, void *unused)
760{
761 CharDriverState *chr;
762
763 QTAILQ_FOREACH(chr, &chardevs, next) {
764 if (chr->is_mux) {
765 MuxDriver *d = chr->opaque;
766 int i;
767
768 /* send OPENED to all already-attached FEs */
769 for (i = 0; i < d->mux_cnt; i++) {
770 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
771 }
772 /* mark mux as OPENED so any new FEs will immediately receive
773 * OPENED event
774 */
775 qemu_chr_be_generic_open(chr);
776 }
777 }
778 muxes_realized = true;
779}
780
781static Notifier muxes_realize_notify = {
782 .notify = muxes_realize_done,
783};
784
3f0838ab
KB		 785static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
786{
787 MuxDriver *d = s->opaque;
788 return d->drv->chr_add_watch(d->drv, cond);
789}
790
3c0e5a4a
PB		 791static CharDriverState *qemu_chr_open_mux(const char *id,
792 ChardevBackend *backend,
793 ChardevReturn *ret, Error **errp)
6f97dba0 794{
32bafa8f 795 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 796 CharDriverState *chr, *drv;
6f97dba0 797 MuxDriver *d;
f194a1ae 798 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 799
3c0e5a4a
PB		 800 drv = qemu_chr_find(mux->chardev);
801 if (drv == NULL) {
802 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
803 return NULL;
804 }
805
d0d7708b
DB		 806 chr = qemu_chr_alloc(common, errp);
807 if (!chr) {
808 return NULL;
809 }
2d528d45 810 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 811
812 chr->opaque = d;
813 d->drv = drv;
799f1f23 814 d->focus = -1;
6f97dba0
AL		 815 chr->chr_write = mux_chr_write;
816 chr->chr_update_read_handler = mux_chr_update_read_handler;
817 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 818 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 819 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 820 if (drv->chr_add_watch) {
821 chr->chr_add_watch = mux_chr_add_watch;
822 }
7b7ab18d
MR		 823 /* only default to opened state if we've realized the initial
824 * set of muxes
825 */
826 chr->explicit_be_open = muxes_realized ? 0 : 1;
827 chr->is_mux = 1;
73cdf3f2 828
6f97dba0
AL		 829 return chr;
830}
831
832
96c63847
AL		 833typedef struct IOWatchPoll
834{
d185c094
PB		 835 GSource parent;
836
9894dc0c 837 QIOChannel *ioc;
96c63847 838 GSource *src;
96c63847
AL		 839
840 IOCanReadHandler *fd_can_read;
1e885b25 841 GSourceFunc fd_read;
96c63847 842 void *opaque;
96c63847
AL		 843} IOWatchPoll;
844
96c63847
AL		 845static IOWatchPoll *io_watch_poll_from_source(GSource *source)
846{
d185c094 847 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 848}
849
850static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
851{
852 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 853 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 854 bool was_active = iwp->src != NULL;
d185c094 855 if (was_active == now_active) {
96c63847
AL		 856 return FALSE;
857 }
858
d185c094 859 if (now_active) {
9894dc0c
DB		 860 iwp->src = qio_channel_create_watch(
861 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 862 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 863 g_source_attach(iwp->src, NULL);
864 } else {
1e885b25
PB		 865 g_source_destroy(iwp->src);
866 g_source_unref(iwp->src);
867 iwp->src = NULL;
d185c094
PB		 868 }
869 return FALSE;
96c63847
AL		 870}
871
872static gboolean io_watch_poll_check(GSource *source)
873{
d185c094 874 return FALSE;
96c63847
AL		 875}
876
877static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
878 gpointer user_data)
879{
d185c094 880 abort();
96c63847
AL		 881}
882
883static void io_watch_poll_finalize(GSource *source)
884{
2b316774
PB		 885 /* Due to a glib bug, removing the last reference to a source
886 * inside a finalize callback causes recursive locking (and a
887 * deadlock). This is not a problem inside other callbacks,
888 * including dispatch callbacks, so we call io_remove_watch_poll
889 * to remove this source. At this point, iwp->src must
890 * be NULL, or we would leak it.
891 *
892 * This would be solved much more elegantly by child sources,
893 * but we support older glib versions that do not have them.
894 */
96c63847 895 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 896 assert(iwp->src == NULL);
96c63847
AL		 897}
898
899static GSourceFuncs io_watch_poll_funcs = {
900 .prepare = io_watch_poll_prepare,
901 .check = io_watch_poll_check,
902 .dispatch = io_watch_poll_dispatch,
903 .finalize = io_watch_poll_finalize,
904};
905
906/* Can only be used for read */
9894dc0c 907static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 908 IOCanReadHandler *fd_can_read,
9894dc0c 909 QIOChannelFunc fd_read,
96c63847
AL		 910 gpointer user_data)
911{
912 IOWatchPoll *iwp;
0ca5aa4f 913 int tag;
96c63847 914
d185c094 915 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 916 iwp->fd_can_read = fd_can_read;
917 iwp->opaque = user_data;
9894dc0c 918 iwp->ioc = ioc;
1e885b25
PB		 919 iwp->fd_read = (GSourceFunc) fd_read;
920 iwp->src = NULL;
96c63847 921
0ca5aa4f
PB		 922 tag = g_source_attach(&iwp->parent, NULL);
923 g_source_unref(&iwp->parent);
924 return tag;
96c63847
AL		 925}
926
2b316774
PB		 927static void io_remove_watch_poll(guint tag)
928{
929 GSource *source;
930 IOWatchPoll *iwp;
931
932 g_return_if_fail (tag > 0);
933
934 source = g_main_context_find_source_by_id(NULL, tag);
935 g_return_if_fail (source != NULL);
936
937 iwp = io_watch_poll_from_source(source);
938 if (iwp->src) {
939 g_source_destroy(iwp->src);
940 g_source_unref(iwp->src);
941 iwp->src = NULL;
942 }
943 g_source_destroy(&iwp->parent);
944}
945
26da70c7
AS		 946static void remove_fd_in_watch(CharDriverState *chr)
947{
948 if (chr->fd_in_tag) {
949 io_remove_watch_poll(chr->fd_in_tag);
950 chr->fd_in_tag = 0;
951 }
952}
953
96c63847 954
9894dc0c
DB		 955static int io_channel_send_full(QIOChannel *ioc,
956 const void *buf, size_t len,
957 int *fds, size_t nfds)
76a9644b 958{
9894dc0c 959 size_t offset = 0;
76a9644b 960
9894dc0c
DB		 961 while (offset < len) {
962 ssize_t ret = 0;
963 struct iovec iov = { .iov_base = (char *)buf + offset,
964 .iov_len = len - offset };
965
966 ret = qio_channel_writev_full(
967 ioc, &iov, 1,
968 fds, nfds, NULL);
969 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 970 if (offset) {
971 return offset;
972 }
76a9644b 973
e046fb44
DB		 974 errno = EAGAIN;
975 return -1;
976 } else if (ret < 0) {
9894dc0c
DB		 977 errno = EINVAL;
978 return -1;
979 }
76a9644b 980
9894dc0c
DB		 981 offset += ret;
982 }
76a9644b 983
9894dc0c 984 return offset;
76a9644b
AL		 985}
986
9894dc0c 987
0ff0fad2 988#ifndef _WIN32
9894dc0c 989static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 990{
9894dc0c 991 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 992}
96c63847 993
44ab9ed4 994
a29753f8
AL		 995typedef struct FDCharDriver {
996 CharDriverState *chr;
9894dc0c 997 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 998 int max_size;
999} FDCharDriver;
1000
9005b2a7 1001/* Called with chr_write_lock held. */
6f97dba0
AL		 1002static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1003{
1004 FDCharDriver *s = chr->opaque;
a29753f8 1005
9894dc0c 1006 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1007}
1008
9894dc0c 1009static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1010{
1011 CharDriverState *chr = opaque;
1012 FDCharDriver *s = chr->opaque;
a29753f8 1013 int len;
9bd7854e 1014 uint8_t buf[READ_BUF_LEN];
9894dc0c 1015 ssize_t ret;
6f97dba0
AL		 1016
1017 len = sizeof(buf);
a29753f8 1018 if (len > s->max_size) {
6f97dba0 1019 len = s->max_size;
a29753f8
AL		 1020 }
1021 if (len == 0) {
cdbf6e16 1022 return TRUE;
a29753f8
AL		 1023 }
1024
9894dc0c
DB		 1025 ret = qio_channel_read(
1026 chan, (gchar *)buf, len, NULL);
1027 if (ret == 0) {
26da70c7 1028 remove_fd_in_watch(chr);
a425d23f 1029 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1030 return FALSE;
6f97dba0 1031 }
9894dc0c
DB		 1032 if (ret > 0) {
1033 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1034 }
a29753f8
AL		 1035
1036 return TRUE;
1037}
1038
1039static int fd_chr_read_poll(void *opaque)
1040{
1041 CharDriverState *chr = opaque;
1042 FDCharDriver *s = chr->opaque;
1043
1044 s->max_size = qemu_chr_be_can_write(chr);
1045 return s->max_size;
6f97dba0
AL		 1046}
1047
23673ca7
AL		 1048static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1049{
1050 FDCharDriver *s = chr->opaque;
9894dc0c 1051 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1052}
1053
6f97dba0
AL		 1054static void fd_chr_update_read_handler(CharDriverState *chr)
1055{
1056 FDCharDriver *s = chr->opaque;
1057
26da70c7 1058 remove_fd_in_watch(chr);
9894dc0c
DB		 1059 if (s->ioc_in) {
1060 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1061 fd_chr_read_poll,
7ba9addc 1062 fd_chr_read, chr);
6f97dba0
AL		 1063 }
1064}
1065
1066static void fd_chr_close(struct CharDriverState *chr)
1067{
1068 FDCharDriver *s = chr->opaque;
1069
26da70c7 1070 remove_fd_in_watch(chr);
9894dc0c
DB		 1071 if (s->ioc_in) {
1072 object_unref(OBJECT(s->ioc_in));
a29753f8 1073 }
9894dc0c
DB		 1074 if (s->ioc_out) {
1075 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1076 }
1077
7267c094 1078 g_free(s);
a425d23f 1079 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1080}
1081
1082/* open a character device to a unix fd */
d0d7708b
DB		 1083static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1084 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1085{
1086 CharDriverState *chr;
1087 FDCharDriver *s;
1088
d0d7708b
DB		 1089 chr = qemu_chr_alloc(backend, errp);
1090 if (!chr) {
1091 return NULL;
1092 }
2d528d45 1093 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1094 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1095 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1096 qemu_set_nonblock(fd_out);
a29753f8 1097 s->chr = chr;
6f97dba0 1098 chr->opaque = s;
23673ca7 1099 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1100 chr->chr_write = fd_chr_write;
1101 chr->chr_update_read_handler = fd_chr_update_read_handler;
1102 chr->chr_close = fd_chr_close;
1103
6f97dba0
AL		 1104 return chr;
1105}
1106
20cbe7a2
PB		 1107static CharDriverState *qemu_chr_open_pipe(const char *id,
1108 ChardevBackend *backend,
1109 ChardevReturn *ret,
1110 Error **errp)
6f97dba0 1111{
32bafa8f 1112 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1113 int fd_in, fd_out;
0ff0fad2
DB		 1114 char *filename_in;
1115 char *filename_out;
548cbb36 1116 const char *filename = opts->device;
f194a1ae 1117 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1118
0ff0fad2
DB		 1119
1120 filename_in = g_strdup_printf("%s.in", filename);
1121 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1122 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1123 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1124 g_free(filename_in);
1125 g_free(filename_out);
6f97dba0
AL		 1126 if (fd_in < 0 || fd_out < 0) {
1127 if (fd_in >= 0)
1128 close(fd_in);
1129 if (fd_out >= 0)
1130 close(fd_out);
b181e047 1131 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1132 if (fd_in < 0) {
20cbe7a2 1133 error_setg_file_open(errp, errno, filename);
1f51470d 1134 return NULL;
a89dd6c3 1135 }
6f97dba0 1136 }
d0d7708b 1137 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1138}
1139
6f97dba0
AL		 1140/* init terminal so that we can grab keys */
1141static struct termios oldtty;
1142static int old_fd0_flags;
c88930a6 1143static bool stdio_in_use;
bb002513 1144static bool stdio_allow_signal;
e76d4420
GH		 1145static bool stdio_echo_state;
1146
1147static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1148
1149static void term_exit(void)
1150{
1151 tcsetattr (0, TCSANOW, &oldtty);
1152 fcntl(0, F_SETFL, old_fd0_flags);
1153}
1154
e76d4420
GH		 1155static void term_stdio_handler(int sig)
1156{
1157 /* restore echo after resume from suspend. */
1158 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1159}
1160
bb002513 1161static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1162{
1163 struct termios tty;
1164
e76d4420 1165 stdio_echo_state = echo;
0369364b 1166 tty = oldtty;
bb002513
PB		 1167 if (!echo) {
1168 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1169 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1170 tty.c_oflag |= OPOST;
1171 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1172 tty.c_cflag &= ~(CSIZE|PARENB);
1173 tty.c_cflag |= CS8;
1174 tty.c_cc[VMIN] = 1;
1175 tty.c_cc[VTIME] = 0;
1176 }
bb002513 1177 if (!stdio_allow_signal)
6f97dba0 1178 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1179
1180 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1181}
1182
1183static void qemu_chr_close_stdio(struct CharDriverState *chr)
1184{
1185 term_exit();
6f97dba0
AL		 1186 fd_chr_close(chr);
1187}
1188
8c84b25d
PB		 1189static CharDriverState *qemu_chr_open_stdio(const char *id,
1190 ChardevBackend *backend,
1191 ChardevReturn *ret,
1192 Error **errp)
6f97dba0 1193{
32bafa8f 1194 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1195 CharDriverState *chr;
e76d4420 1196 struct sigaction act;
f194a1ae 1197 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1198
ab51b1d5 1199 if (is_daemonized()) {
8c84b25d 1200 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1201 return NULL;
1202 }
c88930a6
LL		 1203
1204 if (stdio_in_use) {
8c84b25d
PB		 1205 error_setg(errp, "cannot use stdio by multiple character devices");
1206 return NULL;
c88930a6
LL		 1207 }
1208
1209 stdio_in_use = true;
ed7a1540 1210 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1211 tcgetattr(0, &oldtty);
4ff12bdb 1212 qemu_set_nonblock(0);
ed7a1540 1213 atexit(term_exit);
0369364b 1214
e76d4420
GH		 1215 memset(&act, 0, sizeof(act));
1216 act.sa_handler = term_stdio_handler;
1217 sigaction(SIGCONT, &act, NULL);
1218
d0d7708b 1219 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1220 chr->chr_close = qemu_chr_close_stdio;
bb002513 1221 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1222 if (opts->has_signal) {
1223 stdio_allow_signal = opts->signal;
1224 }
15f31519 1225 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1226
1f51470d 1227 return chr;
6f97dba0
AL		 1228}
1229
6f97dba0 1230#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1231 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1232 || defined(__GLIBC__)
6f97dba0 1233
d809ab95
PB		 1234#define HAVE_CHARDEV_SERIAL 1
1235#define HAVE_CHARDEV_PTY 1
e551498e 1236
6f97dba0 1237typedef struct {
9894dc0c 1238 QIOChannel *ioc;
6f97dba0 1239 int read_bytes;
9005b2a7
PB		 1240
1241 /* Protected by the CharDriverState chr_write_lock. */
1242 int connected;
8aa33caf 1243 guint timer_tag;
7b3621f4 1244 guint open_tag;
6f97dba0
AL		 1245} PtyCharDriver;
1246
9005b2a7 1247static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1248static void pty_chr_state(CharDriverState *chr, int connected);
1249
8aa33caf
AL		 1250static gboolean pty_chr_timer(gpointer opaque)
1251{
1252 struct CharDriverState *chr = opaque;
1253 PtyCharDriver *s = chr->opaque;
1254
9005b2a7 1255 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1256 s->timer_tag = 0;
7b3621f4 1257 s->open_tag = 0;
b0d768c3
GH		 1258 if (!s->connected) {
1259 /* Next poll ... */
9005b2a7 1260 pty_chr_update_read_handler_locked(chr);
b0d768c3 1261 }
9005b2a7 1262 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1263 return FALSE;
1264}
1265
9005b2a7 1266/* Called with chr_write_lock held. */
8aa33caf
AL		 1267static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1268{
1269 PtyCharDriver *s = chr->opaque;
1270
1271 if (s->timer_tag) {
1272 g_source_remove(s->timer_tag);
1273 s->timer_tag = 0;
1274 }
1275
1276 if (ms == 1000) {
1277 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1278 } else {
1279 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1280 }
1281}
1282
9005b2a7
PB		 1283/* Called with chr_write_lock held. */
1284static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1285{
1286 PtyCharDriver *s = chr->opaque;
1287 GPollFD pfd;
c1f24489 1288 int rc;
9894dc0c 1289 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1290
9894dc0c 1291 pfd.fd = fioc->fd;
1bb7fe72
PB		 1292 pfd.events = G_IO_OUT;
1293 pfd.revents = 0;
c1f24489
PB		 1294 do {
1295 rc = g_poll(&pfd, 1, 0);
1296 } while (rc == -1 && errno == EINTR);
1297 assert(rc >= 0);
1298
1bb7fe72
PB		 1299 if (pfd.revents & G_IO_HUP) {
1300 pty_chr_state(chr, 0);
1301 } else {
1302 pty_chr_state(chr, 1);
1303 }
1304}
1305
9005b2a7
PB		 1306static void pty_chr_update_read_handler(CharDriverState *chr)
1307{
1308 qemu_mutex_lock(&chr->chr_write_lock);
1309 pty_chr_update_read_handler_locked(chr);
1310 qemu_mutex_unlock(&chr->chr_write_lock);
1311}
1312
1313/* Called with chr_write_lock held. */
6f97dba0
AL		 1314static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1315{
1316 PtyCharDriver *s = chr->opaque;
1317
1318 if (!s->connected) {
1319 /* guest sends data, check for (re-)connect */
9005b2a7 1320 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1321 if (!s->connected) {
1322 return 0;
1323 }
6f97dba0 1324 }
9894dc0c 1325 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1326}
1327
e6a87ed8
AL		 1328static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1329{
1330 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1331 if (!s->connected) {
1332 return NULL;
1333 }
9894dc0c 1334 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1335}
1336
6f97dba0
AL		 1337static int pty_chr_read_poll(void *opaque)
1338{
1339 CharDriverState *chr = opaque;
1340 PtyCharDriver *s = chr->opaque;
1341
909cda12 1342 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1343 return s->read_bytes;
1344}
1345
9894dc0c 1346static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1347{
1348 CharDriverState *chr = opaque;
1349 PtyCharDriver *s = chr->opaque;
9894dc0c 1350 gsize len;
9bd7854e 1351 uint8_t buf[READ_BUF_LEN];
9894dc0c 1352 ssize_t ret;
6f97dba0
AL		 1353
1354 len = sizeof(buf);
1355 if (len > s->read_bytes)
1356 len = s->read_bytes;
cdbf6e16
PB		 1357 if (len == 0) {
1358 return TRUE;
1359 }
9894dc0c
DB		 1360 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1361 if (ret <= 0) {
6f97dba0 1362 pty_chr_state(chr, 0);
093d3a20
AL		 1363 return FALSE;
1364 } else {
6f97dba0 1365 pty_chr_state(chr, 1);
9894dc0c 1366 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1367 }
093d3a20 1368 return TRUE;
6f97dba0
AL		 1369}
1370
7b3621f4
PB		 1371static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1372{
1373 CharDriverState *chr = opaque;
1374 PtyCharDriver *s = chr->opaque;
1375
1376 s->open_tag = 0;
1377 qemu_chr_be_generic_open(chr);
1378 return FALSE;
1379}
1380
9005b2a7 1381/* Called with chr_write_lock held. */
6f97dba0
AL		 1382static void pty_chr_state(CharDriverState *chr, int connected)
1383{
1384 PtyCharDriver *s = chr->opaque;
1385
1386 if (!connected) {
7b3621f4
PB		 1387 if (s->open_tag) {
1388 g_source_remove(s->open_tag);
1389 s->open_tag = 0;
1390 }
26da70c7 1391 remove_fd_in_watch(chr);
6f97dba0 1392 s->connected = 0;
6f97dba0
AL		 1393 /* (re-)connect poll interval for idle guests: once per second.
1394 * We check more frequently in case the guests sends data to
1395 * the virtual device linked to our pty. */
8aa33caf 1396 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1397 } else {
85a67692
PB		 1398 if (s->timer_tag) {
1399 g_source_remove(s->timer_tag);
1400 s->timer_tag = 0;
1401 }
1402 if (!s->connected) {
7b3621f4 1403 g_assert(s->open_tag == 0);
85a67692 1404 s->connected = 1;
7b3621f4 1405 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1406 }
1407 if (!chr->fd_in_tag) {
9894dc0c
DB		 1408 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1409 pty_chr_read_poll,
7ba9addc 1410 pty_chr_read, chr);
85a67692 1411 }
6f97dba0
AL		 1412 }
1413}
1414
6f97dba0
AL		 1415static void pty_chr_close(struct CharDriverState *chr)
1416{
1417 PtyCharDriver *s = chr->opaque;
1418
7b3621f4
PB		 1419 qemu_mutex_lock(&chr->chr_write_lock);
1420 pty_chr_state(chr, 0);
9894dc0c 1421 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1422 if (s->timer_tag) {
1423 g_source_remove(s->timer_tag);
910b6368 1424 s->timer_tag = 0;
8aa33caf 1425 }
7b3621f4 1426 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1427 g_free(s);
a425d23f 1428 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1429}
1430
e68c5958 1431static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1432 ChardevBackend *backend,
1433 ChardevReturn *ret,
1434 Error **errp)
6f97dba0
AL		 1435{
1436 CharDriverState *chr;
1437 PtyCharDriver *s;
e68c5958 1438 int master_fd, slave_fd;
6f97dba0 1439 char pty_name[PATH_MAX];
32bafa8f 1440 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1441
4efeabbb
MT		 1442 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1443 if (master_fd < 0) {
c2e75a43 1444 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1445 return NULL;
6f97dba0
AL		 1446 }
1447
837a183f 1448 close(slave_fd);
fac6688a 1449 qemu_set_nonblock(master_fd);
6f97dba0 1450
d0d7708b
DB		 1451 chr = qemu_chr_alloc(common, errp);
1452 if (!chr) {
1453 close(master_fd);
1454 return NULL;
1455 }
a4e26048 1456
4efeabbb
MT		 1457 chr->filename = g_strdup_printf("pty:%s", pty_name);
1458 ret->pty = g_strdup(pty_name);
e68c5958 1459 ret->has_pty = true;
58650218 1460
e68c5958 1461 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1462 pty_name, id);
6f97dba0 1463
2d528d45 1464 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1465 chr->opaque = s;
1466 chr->chr_write = pty_chr_write;
1467 chr->chr_update_read_handler = pty_chr_update_read_handler;
1468 chr->chr_close = pty_chr_close;
e6a87ed8 1469 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1470 chr->explicit_be_open = true;
6f97dba0 1471
9894dc0c 1472 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1473 s->timer_tag = 0;
6f97dba0 1474
1f51470d 1475 return chr;
6f97dba0
AL		 1476}
1477
1478static void tty_serial_init(int fd, int speed,
1479 int parity, int data_bits, int stop_bits)
1480{
1481 struct termios tty;
1482 speed_t spd;
1483
1484#if 0
1485 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1486 speed, parity, data_bits, stop_bits);
1487#endif
1488 tcgetattr (fd, &tty);
1489
45eea13b
SW		 1490#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1491 speed = speed * 10 / 11;
1492 do {
1493 check_speed(50);
1494 check_speed(75);
1495 check_speed(110);
1496 check_speed(134);
1497 check_speed(150);
1498 check_speed(200);
1499 check_speed(300);
1500 check_speed(600);
1501 check_speed(1200);
1502 check_speed(1800);
1503 check_speed(2400);
1504 check_speed(4800);
1505 check_speed(9600);
1506 check_speed(19200);
1507 check_speed(38400);
1508 /* Non-Posix values follow. They may be unsupported on some systems. */
1509 check_speed(57600);
1510 check_speed(115200);
1511#ifdef B230400
1512 check_speed(230400);
1513#endif
1514#ifdef B460800
1515 check_speed(460800);
1516#endif
1517#ifdef B500000
1518 check_speed(500000);
1519#endif
1520#ifdef B576000
1521 check_speed(576000);
1522#endif
1523#ifdef B921600
1524 check_speed(921600);
1525#endif
1526#ifdef B1000000
1527 check_speed(1000000);
1528#endif
1529#ifdef B1152000
1530 check_speed(1152000);
1531#endif
1532#ifdef B1500000
1533 check_speed(1500000);
1534#endif
1535#ifdef B2000000
1536 check_speed(2000000);
1537#endif
1538#ifdef B2500000
1539 check_speed(2500000);
1540#endif
1541#ifdef B3000000
1542 check_speed(3000000);
1543#endif
1544#ifdef B3500000
1545 check_speed(3500000);
1546#endif
1547#ifdef B4000000
1548 check_speed(4000000);
1549#endif
6f97dba0 1550 spd = B115200;
45eea13b 1551 } while (0);
6f97dba0
AL		 1552
1553 cfsetispeed(&tty, spd);
1554 cfsetospeed(&tty, spd);
1555
1556 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1557 |INLCR|IGNCR|ICRNL|IXON);
1558 tty.c_oflag |= OPOST;
1559 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1560 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1561 switch(data_bits) {
1562 default:
1563 case 8:
1564 tty.c_cflag |= CS8;
1565 break;
1566 case 7:
1567 tty.c_cflag |= CS7;
1568 break;
1569 case 6:
1570 tty.c_cflag |= CS6;
1571 break;
1572 case 5:
1573 tty.c_cflag |= CS5;
1574 break;
1575 }
1576 switch(parity) {
1577 default:
1578 case 'N':
1579 break;
1580 case 'E':
1581 tty.c_cflag |= PARENB;
1582 break;
1583 case 'O':
1584 tty.c_cflag |= PARENB | PARODD;
1585 break;
1586 }
1587 if (stop_bits == 2)
1588 tty.c_cflag |= CSTOPB;
1589
1590 tcsetattr (fd, TCSANOW, &tty);
1591}
1592
1593static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1594{
1595 FDCharDriver *s = chr->opaque;
9894dc0c 1596 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1597
1598 switch(cmd) {
1599 case CHR_IOCTL_SERIAL_SET_PARAMS:
1600 {
1601 QEMUSerialSetParams *ssp = arg;
9894dc0c 1602 tty_serial_init(fioc->fd,
a29753f8 1603 ssp->speed, ssp->parity,
6f97dba0
AL		 1604 ssp->data_bits, ssp->stop_bits);
1605 }
1606 break;
1607 case CHR_IOCTL_SERIAL_SET_BREAK:
1608 {
1609 int enable = *(int *)arg;
a29753f8 1610 if (enable) {
9894dc0c 1611 tcsendbreak(fioc->fd, 1);
a29753f8 1612 }
6f97dba0
AL		 1613 }
1614 break;
1615 case CHR_IOCTL_SERIAL_GET_TIOCM:
1616 {
1617 int sarg = 0;
1618 int *targ = (int *)arg;
9894dc0c 1619 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1620 *targ = 0;
b4abdfa4 1621 if (sarg & TIOCM_CTS)
6f97dba0 1622 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1623 if (sarg & TIOCM_CAR)
6f97dba0 1624 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1625 if (sarg & TIOCM_DSR)
6f97dba0 1626 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1627 if (sarg & TIOCM_RI)
6f97dba0 1628 *targ |= CHR_TIOCM_RI;
b4abdfa4 1629 if (sarg & TIOCM_DTR)
6f97dba0 1630 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1631 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1632 *targ |= CHR_TIOCM_RTS;
1633 }
1634 break;
1635 case CHR_IOCTL_SERIAL_SET_TIOCM:
1636 {
1637 int sarg = *(int *)arg;
1638 int targ = 0;
9894dc0c 1639 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1640 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1641 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1642 if (sarg & CHR_TIOCM_CTS)
1643 targ |= TIOCM_CTS;
1644 if (sarg & CHR_TIOCM_CAR)
1645 targ |= TIOCM_CAR;
1646 if (sarg & CHR_TIOCM_DSR)
1647 targ |= TIOCM_DSR;
1648 if (sarg & CHR_TIOCM_RI)
1649 targ |= TIOCM_RI;
1650 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1651 targ |= TIOCM_DTR;
b4abdfa4 1652 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1653 targ |= TIOCM_RTS;
9894dc0c 1654 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1655 }
1656 break;
1657 default:
1658 return -ENOTSUP;
1659 }
1660 return 0;
1661}
1662
4266a134
DA		 1663static void qemu_chr_close_tty(CharDriverState *chr)
1664{
4266a134 1665 fd_chr_close(chr);
4266a134
DA		 1666}
1667
d0d7708b
DB		 1668static CharDriverState *qemu_chr_open_tty_fd(int fd,
1669 ChardevCommon *backend,
1670 Error **errp)
d59044ef
GH		 1671{
1672 CharDriverState *chr;
1673
1674 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1675 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1676 chr->chr_ioctl = tty_serial_ioctl;
1677 chr->chr_close = qemu_chr_close_tty;
1678 return chr;
1679}
6f97dba0
AL		 1680#endif /* __linux__ || __sun__ */
1681
1682#if defined(__linux__)
e551498e
GH		 1683
1684#define HAVE_CHARDEV_PARPORT 1
1685
6f97dba0
AL		 1686typedef struct {
1687 int fd;
1688 int mode;
1689} ParallelCharDriver;
1690
1691static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1692{
1693 if (s->mode != mode) {
1694 int m = mode;
1695 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1696 return 0;
1697 s->mode = mode;
1698 }
1699 return 1;
1700}
1701
1702static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1703{
1704 ParallelCharDriver *drv = chr->opaque;
1705 int fd = drv->fd;
1706 uint8_t b;
1707
1708 switch(cmd) {
1709 case CHR_IOCTL_PP_READ_DATA:
1710 if (ioctl(fd, PPRDATA, &b) < 0)
1711 return -ENOTSUP;
1712 *(uint8_t *)arg = b;
1713 break;
1714 case CHR_IOCTL_PP_WRITE_DATA:
1715 b = *(uint8_t *)arg;
1716 if (ioctl(fd, PPWDATA, &b) < 0)
1717 return -ENOTSUP;
1718 break;
1719 case CHR_IOCTL_PP_READ_CONTROL:
1720 if (ioctl(fd, PPRCONTROL, &b) < 0)
1721 return -ENOTSUP;
1722 /* Linux gives only the lowest bits, and no way to know data
1723 direction! For better compatibility set the fixed upper
1724 bits. */
1725 *(uint8_t *)arg = b | 0xc0;
1726 break;
1727 case CHR_IOCTL_PP_WRITE_CONTROL:
1728 b = *(uint8_t *)arg;
1729 if (ioctl(fd, PPWCONTROL, &b) < 0)
1730 return -ENOTSUP;
1731 break;
1732 case CHR_IOCTL_PP_READ_STATUS:
1733 if (ioctl(fd, PPRSTATUS, &b) < 0)
1734 return -ENOTSUP;
1735 *(uint8_t *)arg = b;
1736 break;
1737 case CHR_IOCTL_PP_DATA_DIR:
1738 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1739 return -ENOTSUP;
1740 break;
1741 case CHR_IOCTL_PP_EPP_READ_ADDR:
1742 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1743 struct ParallelIOArg *parg = arg;
1744 int n = read(fd, parg->buffer, parg->count);
1745 if (n != parg->count) {
1746 return -EIO;
1747 }
1748 }
1749 break;
1750 case CHR_IOCTL_PP_EPP_READ:
1751 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1752 struct ParallelIOArg *parg = arg;
1753 int n = read(fd, parg->buffer, parg->count);
1754 if (n != parg->count) {
1755 return -EIO;
1756 }
1757 }
1758 break;
1759 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1760 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1761 struct ParallelIOArg *parg = arg;
1762 int n = write(fd, parg->buffer, parg->count);
1763 if (n != parg->count) {
1764 return -EIO;
1765 }
1766 }
1767 break;
1768 case CHR_IOCTL_PP_EPP_WRITE:
1769 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1770 struct ParallelIOArg *parg = arg;
1771 int n = write(fd, parg->buffer, parg->count);
1772 if (n != parg->count) {
1773 return -EIO;
1774 }
1775 }
1776 break;
1777 default:
1778 return -ENOTSUP;
1779 }
1780 return 0;
1781}
1782
1783static void pp_close(CharDriverState *chr)
1784{
1785 ParallelCharDriver *drv = chr->opaque;
1786 int fd = drv->fd;
1787
1788 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1789 ioctl(fd, PPRELEASE);
1790 close(fd);
7267c094 1791 g_free(drv);
a425d23f 1792 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1793}
1794
d0d7708b
DB		 1795static CharDriverState *qemu_chr_open_pp_fd(int fd,
1796 ChardevCommon *backend,
1797 Error **errp)
6f97dba0
AL		 1798{
1799 CharDriverState *chr;
1800 ParallelCharDriver *drv;
6f97dba0
AL		 1801
1802 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1803 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1804 close(fd);
1f51470d 1805 return NULL;
6f97dba0
AL		 1806 }
1807
d0d7708b
DB		 1808 chr = qemu_chr_alloc(backend, errp);
1809 if (!chr) {
1810 return NULL;
1811 }
27ef9cb0
PB		 1812
1813 drv = g_new0(ParallelCharDriver, 1);
1814 chr->opaque = drv;
6f97dba0
AL		 1815 chr->chr_write = null_chr_write;
1816 chr->chr_ioctl = pp_ioctl;
1817 chr->chr_close = pp_close;
27ef9cb0
PB		 1818
1819 drv->fd = fd;
1820 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1821
1f51470d 1822 return chr;
6f97dba0
AL		 1823}
1824#endif /* __linux__ */
1825
a167ba50 1826#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1827
1828#define HAVE_CHARDEV_PARPORT 1
1829
6972f935
BS		 1830static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1831{
e0efb993 1832 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1833 uint8_t b;
1834
1835 switch(cmd) {
1836 case CHR_IOCTL_PP_READ_DATA:
1837 if (ioctl(fd, PPIGDATA, &b) < 0)
1838 return -ENOTSUP;
1839 *(uint8_t *)arg = b;
1840 break;
1841 case CHR_IOCTL_PP_WRITE_DATA:
1842 b = *(uint8_t *)arg;
1843 if (ioctl(fd, PPISDATA, &b) < 0)
1844 return -ENOTSUP;
1845 break;
1846 case CHR_IOCTL_PP_READ_CONTROL:
1847 if (ioctl(fd, PPIGCTRL, &b) < 0)
1848 return -ENOTSUP;
1849 *(uint8_t *)arg = b;
1850 break;
1851 case CHR_IOCTL_PP_WRITE_CONTROL:
1852 b = *(uint8_t *)arg;
1853 if (ioctl(fd, PPISCTRL, &b) < 0)
1854 return -ENOTSUP;
1855 break;
1856 case CHR_IOCTL_PP_READ_STATUS:
1857 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1858 return -ENOTSUP;
1859 *(uint8_t *)arg = b;
1860 break;
1861 default:
1862 return -ENOTSUP;
1863 }
1864 return 0;
1865}
1866
d0d7708b 1867static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1868 ChardevCommon *backend,
d0d7708b 1869 Error **errp)
6972f935
BS		 1870{
1871 CharDriverState *chr;
6972f935 1872
0850d49c 1873 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1874 if (!chr) {
1875 return NULL;
1876 }
e0efb993 1877 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1878 chr->chr_write = null_chr_write;
1879 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1880 chr->explicit_be_open = true;
1f51470d 1881 return chr;
6972f935
BS		 1882}
1883#endif
1884
6f97dba0
AL		 1885#else /* _WIN32 */
1886
d809ab95
PB		 1887#define HAVE_CHARDEV_SERIAL 1
1888
6f97dba0
AL		 1889typedef struct {
1890 int max_size;
1891 HANDLE hcom, hrecv, hsend;
9005b2a7 1892 OVERLAPPED orecv;
6f97dba0
AL		 1893 BOOL fpipe;
1894 DWORD len;
9005b2a7
PB		 1895
1896 /* Protected by the CharDriverState chr_write_lock. */
1897 OVERLAPPED osend;
6f97dba0
AL		 1898} WinCharState;
1899
db418a0a
FC		 1900typedef struct {
1901 HANDLE hStdIn;
1902 HANDLE hInputReadyEvent;
1903 HANDLE hInputDoneEvent;
1904 HANDLE hInputThread;
1905 uint8_t win_stdio_buf;
1906} WinStdioCharState;
1907
6f97dba0
AL		 1908#define NSENDBUF 2048
1909#define NRECVBUF 2048
1910#define MAXCONNECT 1
1911#define NTIMEOUT 5000
1912
1913static int win_chr_poll(void *opaque);
1914static int win_chr_pipe_poll(void *opaque);
1915
1916static void win_chr_close(CharDriverState *chr)
1917{
1918 WinCharState *s = chr->opaque;
1919
1920 if (s->hsend) {
1921 CloseHandle(s->hsend);
1922 s->hsend = NULL;
1923 }
1924 if (s->hrecv) {
1925 CloseHandle(s->hrecv);
1926 s->hrecv = NULL;
1927 }
1928 if (s->hcom) {
1929 CloseHandle(s->hcom);
1930 s->hcom = NULL;
1931 }
1932 if (s->fpipe)
1933 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1934 else
1935 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1936
a425d23f 1937 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1938}
1939
6511d396 1940static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1941{
1942 WinCharState *s = chr->opaque;
1943 COMMCONFIG comcfg;
1944 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1945 COMSTAT comstat;
1946 DWORD size;
1947 DWORD err;
1948
1949 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1950 if (!s->hsend) {
6511d396 1951 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1952 goto fail;
1953 }
1954 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1955 if (!s->hrecv) {
6511d396 1956 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1957 goto fail;
1958 }
1959
1960 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1961 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1962 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1963 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1964 s->hcom = NULL;
1965 goto fail;
1966 }
1967
1968 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1969 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1970 goto fail;
1971 }
1972
1973 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1974 size = sizeof(COMMCONFIG);
1975 GetDefaultCommConfig(filename, &comcfg, &size);
1976 comcfg.dcb.DCBlength = sizeof(DCB);
1977 CommConfigDialog(filename, NULL, &comcfg);
1978
1979 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1980 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1981 goto fail;
1982 }
1983
1984 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1985 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1986 goto fail;
1987 }
1988
1989 cto.ReadIntervalTimeout = MAXDWORD;
1990 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1991 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1992 goto fail;
1993 }
1994
1995 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 1996 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 1997 goto fail;
1998 }
1999 qemu_add_polling_cb(win_chr_poll, chr);
2000 return 0;
2001
2002 fail:
2003 win_chr_close(chr);
2004 return -1;
2005}
2006
9005b2a7 2007/* Called with chr_write_lock held. */
6f97dba0
AL		 2008static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2009{
2010 WinCharState *s = chr->opaque;
2011 DWORD len, ret, size, err;
2012
2013 len = len1;
2014 ZeroMemory(&s->osend, sizeof(s->osend));
2015 s->osend.hEvent = s->hsend;
2016 while (len > 0) {
2017 if (s->hsend)
2018 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2019 else
2020 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2021 if (!ret) {
2022 err = GetLastError();
2023 if (err == ERROR_IO_PENDING) {
2024 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2025 if (ret) {
2026 buf += size;
2027 len -= size;
2028 } else {
2029 break;
2030 }
2031 } else {
2032 break;
2033 }
2034 } else {
2035 buf += size;
2036 len -= size;
2037 }
2038 }
2039 return len1 - len;
2040}
2041
2042static int win_chr_read_poll(CharDriverState *chr)
2043{
2044 WinCharState *s = chr->opaque;
2045
909cda12 2046 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2047 return s->max_size;
2048}
2049
2050static void win_chr_readfile(CharDriverState *chr)
2051{
2052 WinCharState *s = chr->opaque;
2053 int ret, err;
9bd7854e 2054 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2055 DWORD size;
2056
2057 ZeroMemory(&s->orecv, sizeof(s->orecv));
2058 s->orecv.hEvent = s->hrecv;
2059 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2060 if (!ret) {
2061 err = GetLastError();
2062 if (err == ERROR_IO_PENDING) {
2063 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2064 }
2065 }
2066
2067 if (size > 0) {
fa5efccb 2068 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2069 }
2070}
2071
2072static void win_chr_read(CharDriverState *chr)
2073{
2074 WinCharState *s = chr->opaque;
2075
2076 if (s->len > s->max_size)
2077 s->len = s->max_size;
2078 if (s->len == 0)
2079 return;
2080
2081 win_chr_readfile(chr);
2082}
2083
2084static int win_chr_poll(void *opaque)
2085{
2086 CharDriverState *chr = opaque;
2087 WinCharState *s = chr->opaque;
2088 COMSTAT status;
2089 DWORD comerr;
2090
2091 ClearCommError(s->hcom, &comerr, &status);
2092 if (status.cbInQue > 0) {
2093 s->len = status.cbInQue;
2094 win_chr_read_poll(chr);
2095 win_chr_read(chr);
2096 return 1;
2097 }
2098 return 0;
2099}
2100
6511d396 2101static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2102 ChardevCommon *backend,
6511d396 2103 Error **errp)
6f97dba0
AL		 2104{
2105 CharDriverState *chr;
2106 WinCharState *s;
2107
d0d7708b
DB		 2108 chr = qemu_chr_alloc(backend, errp);
2109 if (!chr) {
2110 return NULL;
2111 }
2d528d45 2112 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2113 chr->opaque = s;
2114 chr->chr_write = win_chr_write;
2115 chr->chr_close = win_chr_close;
2116
6511d396 2117 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2118 g_free(s);
d0d7708b 2119 qemu_chr_free_common(chr);
1f51470d 2120 return NULL;
6f97dba0 2121 }
1f51470d 2122 return chr;
6f97dba0
AL		 2123}
2124
2125static int win_chr_pipe_poll(void *opaque)
2126{
2127 CharDriverState *chr = opaque;
2128 WinCharState *s = chr->opaque;
2129 DWORD size;
2130
2131 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2132 if (size > 0) {
2133 s->len = size;
2134 win_chr_read_poll(chr);
2135 win_chr_read(chr);
2136 return 1;
2137 }
2138 return 0;
2139}
2140
20cbe7a2
PB		 2141static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2142 Error **errp)
6f97dba0
AL		 2143{
2144 WinCharState *s = chr->opaque;
2145 OVERLAPPED ov;
2146 int ret;
2147 DWORD size;
0ff0fad2 2148 char *openname;
6f97dba0
AL		 2149
2150 s->fpipe = TRUE;
2151
2152 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2153 if (!s->hsend) {
20cbe7a2 2154 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2155 goto fail;
2156 }
2157 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2158 if (!s->hrecv) {
20cbe7a2 2159 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2160 goto fail;
2161 }
2162
0ff0fad2 2163 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2164 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2165 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2166 PIPE_WAIT,
2167 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2168 g_free(openname);
6f97dba0 2169 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2170 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2171 s->hcom = NULL;
2172 goto fail;
2173 }
2174
2175 ZeroMemory(&ov, sizeof(ov));
2176 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2177 ret = ConnectNamedPipe(s->hcom, &ov);
2178 if (ret) {
20cbe7a2 2179 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2180 goto fail;
2181 }
2182
2183 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2184 if (!ret) {
20cbe7a2 2185 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2186 if (ov.hEvent) {
2187 CloseHandle(ov.hEvent);
2188 ov.hEvent = NULL;
2189 }
2190 goto fail;
2191 }
2192
2193 if (ov.hEvent) {
2194 CloseHandle(ov.hEvent);
2195 ov.hEvent = NULL;
2196 }
2197 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2198 return 0;
2199
2200 fail:
2201 win_chr_close(chr);
2202 return -1;
2203}
2204
2205
20cbe7a2
PB		 2206static CharDriverState *qemu_chr_open_pipe(const char *id,
2207 ChardevBackend *backend,
2208 ChardevReturn *ret,
2209 Error **errp)
6f97dba0 2210{
32bafa8f 2211 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2212 const char *filename = opts->device;
6f97dba0
AL		 2213 CharDriverState *chr;
2214 WinCharState *s;
f194a1ae 2215 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2216
d0d7708b
DB		 2217 chr = qemu_chr_alloc(common, errp);
2218 if (!chr) {
2219 return NULL;
2220 }
2d528d45 2221 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2222 chr->opaque = s;
2223 chr->chr_write = win_chr_write;
2224 chr->chr_close = win_chr_close;
2225
20cbe7a2 2226 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2227 g_free(s);
d0d7708b 2228 qemu_chr_free_common(chr);
1f51470d 2229 return NULL;
6f97dba0 2230 }
1f51470d 2231 return chr;
6f97dba0
AL		 2232}
2233
d0d7708b
DB		 2234static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2235 ChardevCommon *backend,
2236 Error **errp)
6f97dba0
AL		 2237{
2238 CharDriverState *chr;
2239 WinCharState *s;
2240
d0d7708b
DB		 2241 chr = qemu_chr_alloc(backend, errp);
2242 if (!chr) {
2243 return NULL;
2244 }
2d528d45 2245 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2246 s->hcom = fd_out;
2247 chr->opaque = s;
2248 chr->chr_write = win_chr_write;
1f51470d 2249 return chr;
6f97dba0
AL		 2250}
2251
122e5ed4
PB		 2252static CharDriverState *qemu_chr_open_win_con(const char *id,
2253 ChardevBackend *backend,
2254 ChardevReturn *ret,
2255 Error **errp)
6f97dba0 2256{
32bafa8f 2257 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2258 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2259 common, errp);
6f97dba0
AL		 2260}
2261
db418a0a
FC		 2262static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2263{
2264 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2265 DWORD dwSize;
2266 int len1;
2267
2268 len1 = len;
2269
2270 while (len1 > 0) {
2271 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2272 break;
2273 }
2274 buf += dwSize;
2275 len1 -= dwSize;
2276 }
2277
2278 return len - len1;
2279}
2280
2281static void win_stdio_wait_func(void *opaque)
2282{
2283 CharDriverState *chr = opaque;
2284 WinStdioCharState *stdio = chr->opaque;
2285 INPUT_RECORD buf[4];
2286 int ret;
2287 DWORD dwSize;
2288 int i;
2289
dff7424d 2290 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2291
2292 if (!ret) {
2293 /* Avoid error storm */
2294 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2295 return;
2296 }
2297
2298 for (i = 0; i < dwSize; i++) {
2299 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2300
2301 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2302 int j;
2303 if (kev->uChar.AsciiChar != 0) {
2304 for (j = 0; j < kev->wRepeatCount; j++) {
2305 if (qemu_chr_be_can_write(chr)) {
2306 uint8_t c = kev->uChar.AsciiChar;
2307 qemu_chr_be_write(chr, &c, 1);
2308 }
2309 }
2310 }
2311 }
2312 }
2313}
2314
2315static DWORD WINAPI win_stdio_thread(LPVOID param)
2316{
2317 CharDriverState *chr = param;
2318 WinStdioCharState *stdio = chr->opaque;
2319 int ret;
2320 DWORD dwSize;
2321
2322 while (1) {
2323
2324 /* Wait for one byte */
2325 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2326
2327 /* Exit in case of error, continue if nothing read */
2328 if (!ret) {
2329 break;
2330 }
2331 if (!dwSize) {
2332 continue;
2333 }
2334
2335 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2336 if (stdio->win_stdio_buf == '\r') {
2337 continue;
2338 }
2339
2340 /* Signal the main thread and wait until the byte was eaten */
2341 if (!SetEvent(stdio->hInputReadyEvent)) {
2342 break;
2343 }
2344 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2345 != WAIT_OBJECT_0) {
2346 break;
2347 }
2348 }
2349
2350 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2351 return 0;
2352}
2353
2354static void win_stdio_thread_wait_func(void *opaque)
2355{
2356 CharDriverState *chr = opaque;
2357 WinStdioCharState *stdio = chr->opaque;
2358
2359 if (qemu_chr_be_can_write(chr)) {
2360 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2361 }
2362
2363 SetEvent(stdio->hInputDoneEvent);
2364}
2365
2366static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2367{
2368 WinStdioCharState *stdio = chr->opaque;
2369 DWORD dwMode = 0;
2370
2371 GetConsoleMode(stdio->hStdIn, &dwMode);
2372
2373 if (echo) {
2374 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2375 } else {
2376 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2377 }
2378}
2379
2380static void win_stdio_close(CharDriverState *chr)
2381{
2382 WinStdioCharState *stdio = chr->opaque;
2383
2384 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2385 CloseHandle(stdio->hInputReadyEvent);
2386 }
2387 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2388 CloseHandle(stdio->hInputDoneEvent);
2389 }
2390 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2391 TerminateThread(stdio->hInputThread, 0);
2392 }
2393
2394 g_free(chr->opaque);
2395 g_free(chr);
db418a0a
FC		 2396}
2397
8c84b25d
PB		 2398static CharDriverState *qemu_chr_open_stdio(const char *id,
2399 ChardevBackend *backend,
2400 ChardevReturn *ret,
2401 Error **errp)
db418a0a
FC		 2402{
2403 CharDriverState *chr;
2404 WinStdioCharState *stdio;
2405 DWORD dwMode;
2406 int is_console = 0;
32bafa8f 2407 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2408
d0d7708b
DB		 2409 chr = qemu_chr_alloc(common, errp);
2410 if (!chr) {
2411 return NULL;
2412 }
2d528d45 2413 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2414
2415 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2416 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2417 error_setg(errp, "cannot open stdio: invalid handle");
2418 return NULL;
db418a0a
FC		 2419 }
2420
2421 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2422
2423 chr->opaque = stdio;
2424 chr->chr_write = win_stdio_write;
2425 chr->chr_close = win_stdio_close;
2426
ed7a1540
AL		 2427 if (is_console) {
2428 if (qemu_add_wait_object(stdio->hStdIn,
2429 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2430 error_setg(errp, "qemu_add_wait_object: failed");
2431 goto err1;
ed7a1540
AL		 2432 }
2433 } else {
2434 DWORD dwId;
2435
2436 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2437 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2438 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2439 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2440 error_setg(errp, "cannot create event");
2441 goto err2;
ed7a1540
AL		 2442 }
2443 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2444 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2445 error_setg(errp, "qemu_add_wait_object: failed");
2446 goto err2;
2447 }
2448 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2449 chr, 0, &dwId);
2450
2451 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2452 error_setg(errp, "cannot create stdio thread");
2453 goto err3;
db418a0a
FC		 2454 }
2455 }
2456
2457 dwMode |= ENABLE_LINE_INPUT;
2458
ed7a1540 2459 if (is_console) {
db418a0a
FC		 2460 /* set the terminal in raw mode */
2461 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2462 dwMode |= ENABLE_PROCESSED_INPUT;
2463 }
2464
2465 SetConsoleMode(stdio->hStdIn, dwMode);
2466
2467 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2468 qemu_chr_fe_set_echo(chr, false);
2469
1f51470d 2470 return chr;
8c84b25d
PB		 2471
2472err3:
2473 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2474err2:
2475 CloseHandle(stdio->hInputReadyEvent);
2476 CloseHandle(stdio->hInputDoneEvent);
2477err1:
2478 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2479 return NULL;
db418a0a 2480}
6f97dba0
AL		 2481#endif /* !_WIN32 */
2482
5ab8211b 2483
6f97dba0
AL		 2484/***********************************************************/
2485/* UDP Net console */
2486
2487typedef struct {
9894dc0c 2488 QIOChannel *ioc;
9bd7854e 2489 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2490 int bufcnt;
2491 int bufptr;
2492 int max_size;
2493} NetCharDriver;
2494
9005b2a7 2495/* Called with chr_write_lock held. */
6f97dba0
AL		 2496static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2497{
2498 NetCharDriver *s = chr->opaque;
76a9644b 2499
9894dc0c
DB		 2500 return qio_channel_write(
2501 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2502}
2503
2504static int udp_chr_read_poll(void *opaque)
2505{
2506 CharDriverState *chr = opaque;
2507 NetCharDriver *s = chr->opaque;
2508
909cda12 2509 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2510
2511 /* If there were any stray characters in the queue process them
2512 * first
2513 */
2514 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2515 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2516 s->bufptr++;
909cda12 2517 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2518 }
2519 return s->max_size;
2520}
2521
9894dc0c 2522static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2523{
2524 CharDriverState *chr = opaque;
2525 NetCharDriver *s = chr->opaque;
9894dc0c 2526 ssize_t ret;
6f97dba0 2527
cdbf6e16
PB		 2528 if (s->max_size == 0) {
2529 return TRUE;
2530 }
9894dc0c
DB		 2531 ret = qio_channel_read(
2532 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2533 if (ret <= 0) {
26da70c7 2534 remove_fd_in_watch(chr);
76a9644b
AL		 2535 return FALSE;
2536 }
9894dc0c 2537 s->bufcnt = ret;
6f97dba0
AL		 2538
2539 s->bufptr = 0;
2540 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2541 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2542 s->bufptr++;
909cda12 2543 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2544 }
76a9644b
AL		 2545
2546 return TRUE;
6f97dba0
AL		 2547}
2548
2549static void udp_chr_update_read_handler(CharDriverState *chr)
2550{
2551 NetCharDriver *s = chr->opaque;
2552
26da70c7 2553 remove_fd_in_watch(chr);
9894dc0c
DB		 2554 if (s->ioc) {
2555 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2556 udp_chr_read_poll,
7ba9addc 2557 udp_chr_read, chr);
6f97dba0
AL		 2558 }
2559}
2560
819f56b7
AL		 2561static void udp_chr_close(CharDriverState *chr)
2562{
2563 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2564
2565 remove_fd_in_watch(chr);
9894dc0c
DB		 2566 if (s->ioc) {
2567 object_unref(OBJECT(s->ioc));
819f56b7 2568 }
7267c094 2569 g_free(s);
a425d23f 2570 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2571}
2572
9894dc0c
DB		 2573static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2574 ChardevCommon *backend,
2575 Error **errp)
6f97dba0
AL		 2576{
2577 CharDriverState *chr = NULL;
2578 NetCharDriver *s = NULL;
6f97dba0 2579
d0d7708b
DB		 2580 chr = qemu_chr_alloc(backend, errp);
2581 if (!chr) {
2582 return NULL;
2583 }
2d528d45 2584 s = g_new0(NetCharDriver, 1);
6f97dba0 2585
9894dc0c 2586 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2587 s->bufcnt = 0;
2588 s->bufptr = 0;
2589 chr->opaque = s;
2590 chr->chr_write = udp_chr_write;
2591 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2592 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2593 /* be isn't opened until we get a connection */
2594 chr->explicit_be_open = true;
1f51470d 2595 return chr;
3ecc059d 2596}
6f97dba0 2597
6f97dba0
AL		 2598/***********************************************************/
2599/* TCP Net console */
2600
2601typedef struct {
a8fb5427
DB		 2602 QIOChannel *ioc; /* Client I/O channel */
2603 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2604 QIOChannelSocket *listen_ioc;
7ba9addc 2605 guint listen_tag;
a8fb5427 2606 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2607 int connected;
2608 int max_size;
2609 int do_telnetopt;
2610 int do_nodelay;
2611 int is_unix;
c76bf6bb 2612 int *read_msgfds;
9894dc0c 2613 size_t read_msgfds_num;
d39aac7a 2614 int *write_msgfds;
9894dc0c 2615 size_t write_msgfds_num;
cfb429cb
CM		 2616
2617 SocketAddress *addr;
2618 bool is_listen;
2619 bool is_telnet;
5dd1f02b
CM		 2620
2621 guint reconnect_timer;
2622 int64_t reconnect_time;
5008e5b7 2623 bool connect_err_reported;
6f97dba0
AL		 2624} TCPCharDriver;
2625
5dd1f02b
CM		 2626static gboolean socket_reconnect_timeout(gpointer opaque);
2627
2628static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2629{
2630 TCPCharDriver *s = chr->opaque;
2631 assert(s->connected == 0);
2632 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2633 socket_reconnect_timeout, chr);
2634}
2635
5008e5b7
CM		 2636static void check_report_connect_error(CharDriverState *chr,
2637 Error *err)
2638{
2639 TCPCharDriver *s = chr->opaque;
2640
2641 if (!s->connect_err_reported) {
2642 error_report("Unable to connect character device %s: %s",
2643 chr->label, error_get_pretty(err));
2644 s->connect_err_reported = true;
2645 }
2646 qemu_chr_socket_restart_timer(chr);
2647}
2648
9894dc0c
DB		 2649static gboolean tcp_chr_accept(QIOChannel *chan,
2650 GIOCondition cond,
2651 void *opaque);
d39aac7a 2652
9005b2a7 2653/* Called with chr_write_lock held. */
6f97dba0
AL		 2654static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2655{
2656 TCPCharDriver *s = chr->opaque;
2657 if (s->connected) {
9894dc0c
DB		 2658 int ret = io_channel_send_full(s->ioc, buf, len,
2659 s->write_msgfds,
2660 s->write_msgfds_num);
2661
2662 /* free the written msgfds, no matter what */
2663 if (s->write_msgfds_num) {
2664 g_free(s->write_msgfds);
2665 s->write_msgfds = 0;
2666 s->write_msgfds_num = 0;
d39aac7a 2667 }
9894dc0c
DB		 2668
2669 return ret;
455aa1e0 2670 } else {
6db0fdce 2671 /* XXX: indicate an error ? */
455aa1e0 2672 return len;
6f97dba0
AL		 2673 }
2674}
2675
2676static int tcp_chr_read_poll(void *opaque)
2677{
2678 CharDriverState *chr = opaque;
2679 TCPCharDriver *s = chr->opaque;
2680 if (!s->connected)
2681 return 0;
909cda12 2682 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2683 return s->max_size;
2684}
2685
2686#define IAC 255
2687#define IAC_BREAK 243
2688static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2689 TCPCharDriver *s,
2690 uint8_t *buf, int *size)
2691{
2692 /* Handle any telnet client's basic IAC options to satisfy char by
2693 * char mode with no echo. All IAC options will be removed from
2694 * the buf and the do_telnetopt variable will be used to track the
2695 * state of the width of the IAC information.
2696 *
2697 * IAC commands come in sets of 3 bytes with the exception of the
2698 * "IAC BREAK" command and the double IAC.
2699 */
2700
2701 int i;
2702 int j = 0;
2703
2704 for (i = 0; i < *size; i++) {
2705 if (s->do_telnetopt > 1) {
2706 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2707 /* Double IAC means send an IAC */
2708 if (j != i)
2709 buf[j] = buf[i];
2710 j++;
2711 s->do_telnetopt = 1;
2712 } else {
2713 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2714 /* Handle IAC break commands by sending a serial break */
a425d23f 2715 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2716 s->do_telnetopt++;
2717 }
2718 s->do_telnetopt++;
2719 }
2720 if (s->do_telnetopt >= 4) {
2721 s->do_telnetopt = 1;
2722 }
2723 } else {
2724 if ((unsigned char)buf[i] == IAC) {
2725 s->do_telnetopt = 2;
2726 } else {
2727 if (j != i)
2728 buf[j] = buf[i];
2729 j++;
2730 }
2731 }
2732 }
2733 *size = j;
2734}
2735
c76bf6bb 2736static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2737{
2738 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2739 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2740
c4095726
MT		 2741 assert(num <= TCP_MAX_FDS);
2742
c76bf6bb 2743 if (to_copy) {
d2fc39b4
SH		 2744 int i;
2745
c76bf6bb
NN		 2746 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2747
d2fc39b4
SH		 2748 /* Close unused fds */
2749 for (i = to_copy; i < s->read_msgfds_num; i++) {
2750 close(s->read_msgfds[i]);
2751 }
2752
c76bf6bb
NN		 2753 g_free(s->read_msgfds);
2754 s->read_msgfds = 0;
2755 s->read_msgfds_num = 0;
2756 }
2757
2758 return to_copy;
7d174059
MM		 2759}
2760
d39aac7a
NN		 2761static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2762{
2763 TCPCharDriver *s = chr->opaque;
2764
9894dc0c
DB		 2765 if (!qio_channel_has_feature(s->ioc,
2766 QIO_CHANNEL_FEATURE_FD_PASS)) {
2767 return -1;
2768 }
d39aac7a 2769 /* clear old pending fd array */
ef1e1e07 2770 g_free(s->write_msgfds);
869a58af 2771 s->write_msgfds = NULL;
d39aac7a
NN		 2772
2773 if (num) {
2d528d45 2774 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2775 memcpy(s->write_msgfds, fds, num * sizeof(int));
2776 }
2777
2778 s->write_msgfds_num = num;
2779
2780 return 0;
2781}
2782
9894dc0c 2783static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2784{
2785 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2786 struct iovec iov = { .iov_base = buf, .iov_len = len };
2787 int ret;
2788 size_t i;
2789 int *msgfds = NULL;
2790 size_t msgfds_num = 0;
2791
2792 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2793 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2794 &msgfds, &msgfds_num,
2795 NULL);
2796 } else {
2797 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2798 NULL, NULL,
2799 NULL);
2800 }
7d174059 2801
9894dc0c 2802 if (msgfds_num) {
c76bf6bb
NN		 2803 /* close and clean read_msgfds */
2804 for (i = 0; i < s->read_msgfds_num; i++) {
2805 close(s->read_msgfds[i]);
2806 }
9b938c72 2807
c76bf6bb
NN		 2808 if (s->read_msgfds_num) {
2809 g_free(s->read_msgfds);
2810 }
2811
9894dc0c
DB		 2812 s->read_msgfds = msgfds;
2813 s->read_msgfds_num = msgfds_num;
7d174059 2814 }
7d174059 2815
9894dc0c
DB		 2816 for (i = 0; i < s->read_msgfds_num; i++) {
2817 int fd = s->read_msgfds[i];
2818 if (fd < 0) {
2819 continue;
2820 }
9977c894 2821
9894dc0c
DB		 2822 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2823 qemu_set_block(fd);
7d174059 2824
9894dc0c
DB		 2825#ifndef MSG_CMSG_CLOEXEC
2826 qemu_set_cloexec(fd);
06138651 2827#endif
06138651 2828 }
9977c894 2829
7d174059 2830 return ret;
9977c894 2831}
9977c894 2832
d3cc5bc4
AS		 2833static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2834{
2835 TCPCharDriver *s = chr->opaque;
9894dc0c 2836 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2837}
2838
7b0bfdf5
NN		 2839static void tcp_chr_disconnect(CharDriverState *chr)
2840{
2841 TCPCharDriver *s = chr->opaque;
2842
342f7a9d
MAL		 2843 if (!s->connected) {
2844 return;
2845 }
2846
7b0bfdf5 2847 s->connected = 0;
9894dc0c
DB		 2848 if (s->listen_ioc) {
2849 s->listen_tag = qio_channel_add_watch(
2850 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
7b0bfdf5 2851 }
6167ebbd 2852 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2853 remove_fd_in_watch(chr);
a8fb5427
DB		 2854 object_unref(OBJECT(s->sioc));
2855 s->sioc = NULL;
9894dc0c
DB		 2856 object_unref(OBJECT(s->ioc));
2857 s->ioc = NULL;
0ff0fad2
DB		 2858 g_free(chr->filename);
2859 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2860 s->is_listen, s->is_telnet);
7b0bfdf5 2861 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2862 if (s->reconnect_time) {
2863 qemu_chr_socket_restart_timer(chr);
2864 }
7b0bfdf5
NN		 2865}
2866
9894dc0c 2867static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2868{
2869 CharDriverState *chr = opaque;
2870 TCPCharDriver *s = chr->opaque;
9bd7854e 2871 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2872 int len, size;
2873
2ea5a7af 2874 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2875 return TRUE;
2ea5a7af 2876 }
6f97dba0
AL		 2877 len = sizeof(buf);
2878 if (len > s->max_size)
2879 len = s->max_size;
9977c894 2880 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2881 if (size == 0 || size == -1) {
6f97dba0 2882 /* connection closed */
7b0bfdf5 2883 tcp_chr_disconnect(chr);
6f97dba0
AL		 2884 } else if (size > 0) {
2885 if (s->do_telnetopt)
2886 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2887 if (size > 0)
fa5efccb 2888 qemu_chr_be_write(chr, buf, size);
6f97dba0 2889 }
2ea5a7af
AL		 2890
2891 return TRUE;
6f97dba0
AL		 2892}
2893
7b0bfdf5
NN		 2894static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2895{
2896 TCPCharDriver *s = chr->opaque;
2897 int size;
2898
2899 if (!s->connected) {
2900 return 0;
2901 }
2902
2903 size = tcp_chr_recv(chr, (void *) buf, len);
2904 if (size == 0) {
2905 /* connection closed */
2906 tcp_chr_disconnect(chr);
2907 }
2908
2909 return size;
2910}
2911
6f97dba0
AL		 2912static void tcp_chr_connect(void *opaque)
2913{
2914 CharDriverState *chr = opaque;
2915 TCPCharDriver *s = chr->opaque;
16cc4ffe 2916
0ff0fad2 2917 g_free(chr->filename);
a8fb5427
DB		 2918 chr->filename = sockaddr_to_str(
2919 &s->sioc->localAddr, s->sioc->localAddrLen,
2920 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2921 s->is_listen, s->is_telnet);
6f97dba0
AL		 2922
2923 s->connected = 1;
9894dc0c
DB		 2924 if (s->ioc) {
2925 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2926 tcp_chr_read_poll,
7ba9addc 2927 tcp_chr_read, chr);
bbdd2ad0 2928 }
fee204fd 2929 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2930}
2931
ac1b84dd
GH		 2932static void tcp_chr_update_read_handler(CharDriverState *chr)
2933{
2934 TCPCharDriver *s = chr->opaque;
2935
1e94f23d
DB		 2936 if (!s->connected) {
2937 return;
2938 }
2939
ac1b84dd 2940 remove_fd_in_watch(chr);
9894dc0c
DB		 2941 if (s->ioc) {
2942 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2943 tcp_chr_read_poll,
ac1b84dd
GH		 2944 tcp_chr_read, chr);
2945 }
2946}
2947
f2001a7e
DB		 2948typedef struct {
2949 CharDriverState *chr;
2950 char buf[12];
2951 size_t buflen;
2952} TCPCharDriverTelnetInit;
2953
2954static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2955 GIOCondition cond G_GNUC_UNUSED,
2956 gpointer user_data)
6f97dba0 2957{
f2001a7e
DB		 2958 TCPCharDriverTelnetInit *init = user_data;
2959 ssize_t ret;
2960
2961 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2962 if (ret < 0) {
2963 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2964 ret = 0;
2965 } else {
2966 tcp_chr_disconnect(init->chr);
2967 return FALSE;
2968 }
2969 }
2970 init->buflen -= ret;
2971
2972 if (init->buflen == 0) {
2973 tcp_chr_connect(init->chr);
2974 return FALSE;
2975 }
2976
2977 memmove(init->buf, init->buf + ret, init->buflen);
2978
2979 return TRUE;
2980}
2981
2982static void tcp_chr_telnet_init(CharDriverState *chr)
2983{
2984 TCPCharDriver *s = chr->opaque;
2985 TCPCharDriverTelnetInit *init =
2986 g_new0(TCPCharDriverTelnetInit, 1);
2987 size_t n = 0;
2988
2989 init->chr = chr;
2990 init->buflen = 12;
2991
2992#define IACSET(x, a, b, c) \
2993 do { \
2994 x[n++] = a; \
2995 x[n++] = b; \
2996 x[n++] = c; \
2997 } while (0)
2998
2999 /* Prep the telnet negotion to put telnet in binary,
3000 * no echo, single char mode */
3001 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3002 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3003 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3004 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3005
3006#undef IACSET
3007
3008 qio_channel_add_watch(
3009 s->ioc, G_IO_OUT,
3010 tcp_chr_telnet_init_io,
3011 init, NULL);
6f97dba0
AL		 3012}
3013
a8fb5427
DB		 3014
3015static void tcp_chr_tls_handshake(Object *source,
3016 Error *err,
3017 gpointer user_data)
3018{
3019 CharDriverState *chr = user_data;
3020 TCPCharDriver *s = chr->opaque;
3021
3022 if (err) {
3023 tcp_chr_disconnect(chr);
3024 } else {
3025 if (s->do_telnetopt) {
3026 tcp_chr_telnet_init(chr);
3027 } else {
3028 tcp_chr_connect(chr);
3029 }
3030 }
3031}
3032
3033
3034static void tcp_chr_tls_init(CharDriverState *chr)
3035{
3036 TCPCharDriver *s = chr->opaque;
3037 QIOChannelTLS *tioc;
3038 Error *err = NULL;
3039
3040 if (s->is_listen) {
3041 tioc = qio_channel_tls_new_server(
3042 s->ioc, s->tls_creds,
3043 NULL, /* XXX Use an ACL */
3044 &err);
3045 } else {
3046 tioc = qio_channel_tls_new_client(
3047 s->ioc, s->tls_creds,
32bafa8f 3048 s->addr->u.inet.data->host,
a8fb5427
DB		 3049 &err);
3050 }
3051 if (tioc == NULL) {
3052 error_free(err);
3053 tcp_chr_disconnect(chr);
3054 }
3055 object_unref(OBJECT(s->ioc));
3056 s->ioc = QIO_CHANNEL(tioc);
3057
3058 qio_channel_tls_handshake(tioc,
3059 tcp_chr_tls_handshake,
3060 chr,
3061 NULL);
3062}
3063
3064
9894dc0c 3065static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3066{
3067 TCPCharDriver *s = chr->opaque;
9894dc0c 3068 if (s->ioc != NULL) {
13661089 3069 return -1;
9894dc0c 3070 }
13661089 3071
9894dc0c
DB		 3072 s->ioc = QIO_CHANNEL(sioc);
3073 object_ref(OBJECT(sioc));
a8fb5427
DB		 3074 s->sioc = sioc;
3075 object_ref(OBJECT(sioc));
9894dc0c
DB		 3076
3077 if (s->do_nodelay) {
3078 qio_channel_set_delay(s->ioc, false);
3079 }
910b6368
PB		 3080 if (s->listen_tag) {
3081 g_source_remove(s->listen_tag);
3082 s->listen_tag = 0;
3083 }
f2001a7e 3084
a8fb5427
DB		 3085 if (s->tls_creds) {
3086 tcp_chr_tls_init(chr);
f2001a7e 3087 } else {
a8fb5427
DB		 3088 if (s->do_telnetopt) {
3089 tcp_chr_telnet_init(chr);
3090 } else {
3091 tcp_chr_connect(chr);
3092 }
f2001a7e 3093 }
13661089
DB		 3094
3095 return 0;
3096}
3097
9894dc0c
DB		 3098
3099static int tcp_chr_add_client(CharDriverState *chr, int fd)
3100{
3101 int ret;
3102 QIOChannelSocket *sioc;
3103
3104 sioc = qio_channel_socket_new_fd(fd, NULL);
3105 if (!sioc) {
3106 return -1;
3107 }
3108 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3109 ret = tcp_chr_new_client(chr, sioc);
3110 object_unref(OBJECT(sioc));
3111 return ret;
3112}
3113
3114static gboolean tcp_chr_accept(QIOChannel *channel,
3115 GIOCondition cond,
3116 void *opaque)
6f97dba0
AL		 3117{
3118 CharDriverState *chr = opaque;
9894dc0c 3119 QIOChannelSocket *sioc;
6f97dba0 3120
9894dc0c
DB		 3121 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3122 NULL);
3123 if (!sioc) {
3124 return TRUE;
6f97dba0 3125 }
9894dc0c 3126
9894dc0c
DB		 3127 tcp_chr_new_client(chr, sioc);
3128
3129 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3130
3131 return TRUE;
6f97dba0
AL		 3132}
3133
3134static void tcp_chr_close(CharDriverState *chr)
3135{
3136 TCPCharDriver *s = chr->opaque;
c76bf6bb 3137 int i;
cfb429cb 3138
5dd1f02b
CM		 3139 if (s->reconnect_timer) {
3140 g_source_remove(s->reconnect_timer);
3141 s->reconnect_timer = 0;
3142 }
cfb429cb 3143 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3144 remove_fd_in_watch(chr);
3145 if (s->ioc) {
3146 object_unref(OBJECT(s->ioc));
819f56b7 3147 }
9894dc0c
DB		 3148 if (s->listen_tag) {
3149 g_source_remove(s->listen_tag);
3150 s->listen_tag = 0;
3151 }
3152 if (s->listen_ioc) {
3153 object_unref(OBJECT(s->listen_ioc));
819f56b7 3154 }
c76bf6bb
NN		 3155 if (s->read_msgfds_num) {
3156 for (i = 0; i < s->read_msgfds_num; i++) {
3157 close(s->read_msgfds[i]);
3158 }
3159 g_free(s->read_msgfds);
3160 }
a8fb5427
DB		 3161 if (s->tls_creds) {
3162 object_unref(OBJECT(s->tls_creds));
3163 }
d39aac7a
NN		 3164 if (s->write_msgfds_num) {
3165 g_free(s->write_msgfds);
3166 }
7267c094 3167 g_free(s);
a425d23f 3168 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3169}
3170
43ded1a0 3171
9894dc0c 3172static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3173{
9894dc0c 3174 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3175 CharDriverState *chr = opaque;
5008e5b7 3176 TCPCharDriver *s = chr->opaque;
5dd1f02b 3177
9894dc0c 3178 if (err) {
5008e5b7 3179 check_report_connect_error(chr, err);
9894dc0c 3180 object_unref(src);
5dd1f02b
CM		 3181 return;
3182 }
3183
5008e5b7 3184 s->connect_err_reported = false;
f50dfe45
DB		 3185 tcp_chr_new_client(chr, sioc);
3186 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3187}
3188
f6bd5d6e 3189
51767e7c 3190/*********************************************************/
3949e594 3191/* Ring buffer chardev */
51767e7c
LL		 3192
3193typedef struct {
3194 size_t size;
3195 size_t prod;
3196 size_t cons;
3197 uint8_t *cbuf;
3949e594 3198} RingBufCharDriver;
51767e7c 3199
3949e594 3200static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3201{
3949e594 3202 const RingBufCharDriver *d = chr->opaque;
51767e7c 3203
5c230105 3204 return d->prod - d->cons;
51767e7c
LL		 3205}
3206
9005b2a7 3207/* Called with chr_write_lock held. */
3949e594 3208static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3209{
3949e594 3210 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3211 int i;
3212
3213 if (!buf || (len < 0)) {
3214 return -1;
3215 }
3216
3217 for (i = 0; i < len; i++ ) {
5c230105
MA		 3218 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3219 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3220 d->cons = d->prod - d->size;
3221 }
3222 }
3223
3224 return 0;
3225}
3226
3949e594 3227static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3228{
3949e594 3229 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3230 int i;
3231
9005b2a7 3232 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3233 for (i = 0; i < len && d->cons != d->prod; i++) {
3234 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3235 }
9005b2a7 3236 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3237
3238 return i;
3239}
3240
3949e594 3241static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3242{
3949e594 3243 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3244
3245 g_free(d->cbuf);
3246 g_free(d);
3247 chr->opaque = NULL;
3248}
3249
479f09a1
PB		 3250static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3251 ChardevBackend *backend,
3252 ChardevReturn *ret,
4f57378f 3253 Error **errp)
51767e7c 3254{
32bafa8f 3255 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3256 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3257 CharDriverState *chr;
3949e594 3258 RingBufCharDriver *d;
51767e7c 3259
d0d7708b
DB		 3260 chr = qemu_chr_alloc(common, errp);
3261 if (!chr) {
3262 return NULL;
3263 }
51767e7c
LL		 3264 d = g_malloc(sizeof(*d));
3265
1da48c65 3266 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3267
3268 /* The size must be power of 2 */
3269 if (d->size & (d->size - 1)) {
4f57378f 3270 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3271 goto fail;
3272 }
3273
3274 d->prod = 0;
3275 d->cons = 0;
3276 d->cbuf = g_malloc0(d->size);
3277
3278 chr->opaque = d;
3949e594
MA		 3279 chr->chr_write = ringbuf_chr_write;
3280 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3281
3282 return chr;
3283
3284fail:
3285 g_free(d);
d0d7708b 3286 qemu_chr_free_common(chr);
51767e7c
LL		 3287 return NULL;
3288}
3289
8e597779 3290bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3291{
3949e594 3292 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3293}
3294
3949e594 3295void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3296 bool has_format, enum DataFormat format,
1f590cf9
LL		 3297 Error **errp)
3298{
3299 CharDriverState *chr;
c4f331b6 3300 const uint8_t *write_data;
1f590cf9 3301 int ret;
3d1bba20 3302 gsize write_count;
1f590cf9
LL		 3303
3304 chr = qemu_chr_find(device);
3305 if (!chr) {
1a69278e 3306 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3307 return;
3308 }
3309
3949e594
MA		 3310 if (!chr_is_ringbuf(chr)) {
3311 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3312 return;
3313 }
3314
1f590cf9 3315 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3316 write_data = qbase64_decode(data, -1,
3317 &write_count,
3318 errp);
3319 if (!write_data) {
3320 return;
3321 }
1f590cf9
LL		 3322 } else {
3323 write_data = (uint8_t *)data;
82e59a67 3324 write_count = strlen(data);
1f590cf9
LL		 3325 }
3326
3949e594 3327 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3328
13289fb5
MA		 3329 if (write_data != (uint8_t *)data) {
3330 g_free((void *)write_data);
3331 }
3332
1f590cf9
LL		 3333 if (ret < 0) {
3334 error_setg(errp, "Failed to write to device %s", device);
3335 return;
3336 }
3337}
3338
3949e594 3339char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3340 bool has_format, enum DataFormat format,
3341 Error **errp)
49b6d722
LL		 3342{
3343 CharDriverState *chr;
c4f331b6 3344 uint8_t *read_data;
49b6d722 3345 size_t count;
3ab651fc 3346 char *data;
49b6d722
LL		 3347
3348 chr = qemu_chr_find(device);
3349 if (!chr) {
1a69278e 3350 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3351 return NULL;
3352 }
3353
3949e594
MA		 3354 if (!chr_is_ringbuf(chr)) {
3355 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3356 return NULL;
3357 }
3358
3359 if (size <= 0) {
3360 error_setg(errp, "size must be greater than zero");
3361 return NULL;
3362 }
3363
3949e594 3364 count = ringbuf_count(chr);
49b6d722 3365 size = size > count ? count : size;
44f3bcd2 3366 read_data = g_malloc(size + 1);
49b6d722 3367
3949e594 3368 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3369
3370 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3371 data = g_base64_encode(read_data, size);
13289fb5 3372 g_free(read_data);
49b6d722 3373 } else {
3949e594
MA		 3374 /*
3375 * FIXME should read only complete, valid UTF-8 characters up
3376 * to @size bytes. Invalid sequences should be replaced by a
3377 * suitable replacement character. Except when (and only
3378 * when) ring buffer lost characters since last read, initial
3379 * continuation characters should be dropped.
3380 */
44f3bcd2 3381 read_data[size] = 0;
3ab651fc 3382 data = (char *)read_data;
49b6d722
LL		 3383 }
3384
3ab651fc 3385 return data;
49b6d722
LL		 3386}
3387
33521634 3388QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3389{
6ea314d9 3390 char host[65], port[33], width[8], height[8];
aeb2c47a 3391 int pos;
7d31544f 3392 const char *p;
191bc01b 3393 QemuOpts *opts;
8be7e7e4 3394 Error *local_err = NULL;
191bc01b 3395
8be7e7e4 3396 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3397 if (local_err) {
33394884 3398 error_report_err(local_err);
191bc01b 3399 return NULL;
8be7e7e4 3400 }
191bc01b 3401
7591c5c1
GH		 3402 if (strstart(filename, "mon:", &p)) {
3403 filename = p;
f43e47db 3404 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3405 if (strcmp(filename, "stdio") == 0) {
3406 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3407 * but pass it to the guest. Handle this only for compat syntax,
3408 * for -chardev syntax we have special option for this.
3409 * This is what -nographic did, redirecting+muxing serial+monitor
3410 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3411 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3412 }
7591c5c1
GH		 3413 }
3414
f0457e8d
GH		 3415 if (strcmp(filename, "null") == 0 ||
3416 strcmp(filename, "pty") == 0 ||
3417 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3418 strcmp(filename, "braille") == 0 ||
5692399f 3419 strcmp(filename, "testdev") == 0 ||
f0457e8d 3420 strcmp(filename, "stdio") == 0) {
f43e47db 3421 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3422 return opts;
3423 }
6ea314d9 3424 if (strstart(filename, "vc", &p)) {
f43e47db 3425 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3426 if (*p == ':') {
49aa4058 3427 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3428 /* pixels */
f43e47db
MA		 3429 qemu_opt_set(opts, "width", width, &error_abort);
3430 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3431 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3432 /* chars */
f43e47db
MA		 3433 qemu_opt_set(opts, "cols", width, &error_abort);
3434 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3435 } else {
3436 goto fail;
3437 }
3438 }
3439 return opts;
3440 }
d6c983cd 3441 if (strcmp(filename, "con:") == 0) {
f43e47db 3442 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3443 return opts;
3444 }
48b76496 3445 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3446 qemu_opt_set(opts, "backend", "serial", &error_abort);
3447 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3448 return opts;
3449 }
7d31544f 3450 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3451 qemu_opt_set(opts, "backend", "file", &error_abort);
3452 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3453 return opts;
3454 }
3455 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3456 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3457 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3458 return opts;
3459 }
aeb2c47a
GH		 3460 if (strstart(filename, "tcp:", &p) ||
3461 strstart(filename, "telnet:", &p)) {
3462 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3463 host[0] = 0;
3464 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3465 goto fail;
3466 }
f43e47db
MA		 3467 qemu_opt_set(opts, "backend", "socket", &error_abort);
3468 qemu_opt_set(opts, "host", host, &error_abort);
3469 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3470 if (p[pos] == ',') {
dc523cd3
MA		 3471 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3472 if (local_err) {
3473 error_report_err(local_err);
aeb2c47a 3474 goto fail;
dc523cd3 3475 }
aeb2c47a
GH		 3476 }
3477 if (strstart(filename, "telnet:", &p))
f43e47db 3478 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3479 return opts;
3480 }
7e1b35b4 3481 if (strstart(filename, "udp:", &p)) {
f43e47db 3482 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3483 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3484 host[0] = 0;
39324ca4 3485 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3486 goto fail;
3487 }
3488 }
f43e47db
MA		 3489 qemu_opt_set(opts, "host", host, &error_abort);
3490 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3491 if (p[pos] == '@') {
3492 p += pos + 1;
3493 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3494 host[0] = 0;
3495 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3496 goto fail;
3497 }
3498 }
f43e47db
MA		 3499 qemu_opt_set(opts, "localaddr", host, &error_abort);
3500 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3501 }
3502 return opts;
3503 }
aeb2c47a 3504 if (strstart(filename, "unix:", &p)) {
f43e47db 3505 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3506 qemu_opts_do_parse(opts, p, "path", &local_err);
3507 if (local_err) {
3508 error_report_err(local_err);
aeb2c47a 3509 goto fail;
dc523cd3 3510 }
aeb2c47a
GH		 3511 return opts;
3512 }
48b76496
GH		 3513 if (strstart(filename, "/dev/parport", NULL) ||
3514 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3515 qemu_opt_set(opts, "backend", "parport", &error_abort);
3516 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3517 return opts;
3518 }
3519 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3520 qemu_opt_set(opts, "backend", "tty", &error_abort);
3521 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3522 return opts;
3523 }
191bc01b 3524
aeb2c47a 3525fail:
191bc01b
GH		 3526 qemu_opts_del(opts);
3527 return NULL;
3528}
3529
21a933ea 3530void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3531{
3532 const char *logfile = qemu_opt_get(opts, "logfile");
3533
3534 backend->has_logfile = logfile != NULL;
3535 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3536
3537 backend->has_logappend = true;
3538 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3539}
3540
3541
846e2e49
GH		 3542static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3543 Error **errp)
3544{
3545 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3546 ChardevFile *file;
846e2e49
GH		 3547
3548 if (path == NULL) {
3549 error_setg(errp, "chardev: file: no filename given");
3550 return;
3551 }
32bafa8f 3552 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3553 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3554 file->out = g_strdup(path);
31e38a22 3555
f194a1ae
EB		 3556 file->has_append = true;
3557 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3558}
3559
7c358031
GH		 3560static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3561 Error **errp)
3562{
f194a1ae
EB		 3563 ChardevStdio *stdio;
3564
32bafa8f 3565 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3566 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3567 stdio->has_signal = true;
3568 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3569}
3570
6511d396 3571#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3572static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3573 Error **errp)
3574{
3575 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3576 ChardevHostdev *serial;
0f1cb51d
GH		 3577
3578 if (device == NULL) {
3579 error_setg(errp, "chardev: serial/tty: no device path given");
3580 return;
3581 }
32bafa8f 3582 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3583 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3584 serial->device = g_strdup(device);
0f1cb51d 3585}
6511d396 3586#endif
0f1cb51d 3587
38bfb1a6 3588#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3589static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3590 Error **errp)
3591{
3592 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3593 ChardevHostdev *parallel;
dc375097
GH		 3594
3595 if (device == NULL) {
3596 error_setg(errp, "chardev: parallel: no device path given");
3597 return;
3598 }
32bafa8f 3599 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3600 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3601 parallel->device = g_strdup(device);
dc375097 3602}
38bfb1a6 3603#endif
dc375097 3604
548cbb36
GH		 3605static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3606 Error **errp)
3607{
3608 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3609 ChardevHostdev *dev;
548cbb36
GH		 3610
3611 if (device == NULL) {
3612 error_setg(errp, "chardev: pipe: no device path given");
3613 return;
3614 }
32bafa8f 3615 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3616 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3617 dev->device = g_strdup(device);
548cbb36
GH		 3618}
3619
4f57378f
MA		 3620static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3621 Error **errp)
1da48c65
GH		 3622{
3623 int val;
f194a1ae 3624 ChardevRingbuf *ringbuf;
1da48c65 3625
32bafa8f 3626 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3627 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3628
0f953051 3629 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3630 if (val != 0) {
f194a1ae
EB		 3631 ringbuf->has_size = true;
3632 ringbuf->size = val;
1da48c65
GH		 3633 }
3634}
3635
bb6fb7c0
GH		 3636static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3637 Error **errp)
3638{
3639 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3640 ChardevMux *mux;
bb6fb7c0
GH		 3641
3642 if (chardev == NULL) {
3643 error_setg(errp, "chardev: mux: no chardev given");
3644 return;
3645 }
32bafa8f 3646 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3647 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3648 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3649}
3650
dafd325d
PM		 3651static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3652 Error **errp)
3653{
3654 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3655 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3656 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3657 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3658 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3659 const char *path = qemu_opt_get(opts, "path");
3660 const char *host = qemu_opt_get(opts, "host");
3661 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3662 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3663 SocketAddress *addr;
f194a1ae 3664 ChardevSocket *sock;
dafd325d
PM		 3665
3666 if (!path) {
3667 if (!host) {
3668 error_setg(errp, "chardev: socket: no host given");
3669 return;
3670 }
3671 if (!port) {
3672 error_setg(errp, "chardev: socket: no port given");
3673 return;
3674 }
a8fb5427
DB		 3675 } else {
3676 if (tls_creds) {
3677 error_setg(errp, "TLS can only be used over TCP socket");
3678 return;
3679 }
dafd325d
PM		 3680 }
3681
32bafa8f 3682 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3683 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3684
f194a1ae
EB		 3685 sock->has_nodelay = true;
3686 sock->nodelay = do_nodelay;
3687 sock->has_server = true;
3688 sock->server = is_listen;
3689 sock->has_telnet = true;
3690 sock->telnet = is_telnet;
3691 sock->has_wait = true;
3692 sock->wait = is_waitconnect;
3693 sock->has_reconnect = true;
3694 sock->reconnect = reconnect;
3695 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3696
3697 addr = g_new0(SocketAddress, 1);
3698 if (path) {
0399293e 3699 UnixSocketAddress *q_unix;
130257dc 3700 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3701 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3702 q_unix->path = g_strdup(path);
dafd325d 3703 } else {
130257dc 3704 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3705 addr->u.inet.data = g_new(InetSocketAddress, 1);
3706 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3707 .host = g_strdup(host),
3708 .port = g_strdup(port),
3709 .has_to = qemu_opt_get(opts, "to"),
3710 .to = qemu_opt_get_number(opts, "to", 0),
3711 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3712 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3713 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3714 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3715 };
dafd325d 3716 }
f194a1ae 3717 sock->addr = addr;
dafd325d
PM		 3718}
3719
90a14bfe
PM		 3720static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3721 Error **errp)
3722{
3723 const char *host = qemu_opt_get(opts, "host");
3724 const char *port = qemu_opt_get(opts, "port");
3725 const char *localaddr = qemu_opt_get(opts, "localaddr");
3726 const char *localport = qemu_opt_get(opts, "localport");
3727 bool has_local = false;
3728 SocketAddress *addr;
f194a1ae 3729 ChardevUdp *udp;
90a14bfe
PM		 3730
3731 if (host == NULL || strlen(host) == 0) {
3732 host = "localhost";
3733 }
3734 if (port == NULL || strlen(port) == 0) {
3735 error_setg(errp, "chardev: udp: remote port not specified");
3736 return;
3737 }
3738 if (localport == NULL || strlen(localport) == 0) {
3739 localport = "0";
3740 } else {
3741 has_local = true;
3742 }
3743 if (localaddr == NULL || strlen(localaddr) == 0) {
3744 localaddr = "";
3745 } else {
3746 has_local = true;
3747 }
3748
32bafa8f 3749 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 3750 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3751
3752 addr = g_new0(SocketAddress, 1);
130257dc 3753 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3754 addr->u.inet.data = g_new(InetSocketAddress, 1);
3755 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3756 .host = g_strdup(host),
3757 .port = g_strdup(port),
3758 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3759 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3760 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3761 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3762 };
f194a1ae 3763 udp->remote = addr;
90a14bfe
PM		 3764
3765 if (has_local) {
f194a1ae 3766 udp->has_local = true;
90a14bfe 3767 addr = g_new0(SocketAddress, 1);
130257dc 3768 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3769 addr->u.inet.data = g_new(InetSocketAddress, 1);
3770 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3771 .host = g_strdup(localaddr),
3772 .port = g_strdup(localport),
3773 };
f194a1ae 3774 udp->local = addr;
90a14bfe
PM		 3775 }
3776}
3777
d654f34e 3778typedef struct CharDriver {
191bc01b 3779 const char *name;
99aec012 3780 ChardevBackendKind kind;
2c5f4882 3781 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3782 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3783 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3784} CharDriver;
3785
3786static GSList *backends;
3787
e4d50d47 3788void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3789 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3790 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3791 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3792{
3793 CharDriver *s;
3794
3795 s = g_malloc0(sizeof(*s));
3796 s->name = g_strdup(name);
3797 s->kind = kind;
3798 s->parse = parse;
4ca17281 3799 s->create = create;
2c5f4882
GH		 3800
3801 backends = g_slist_append(backends, s);
3802}
3803
f69554b9 3804CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3805 void (*init)(struct CharDriverState *s),
3806 Error **errp)
191bc01b 3807{
0aff637e 3808 Error *local_err = NULL;
d654f34e 3809 CharDriver *cd;
191bc01b 3810 CharDriverState *chr;
d654f34e 3811 GSList *i;
a61ae7f8
PM		 3812 ChardevReturn *ret = NULL;
3813 ChardevBackend *backend;
3814 const char *id = qemu_opts_id(opts);
3815 char *bid = NULL;
191bc01b 3816
a61ae7f8 3817 if (id == NULL) {
312fd5f2 3818 error_setg(errp, "chardev: no id specified");
2274ae9d 3819 goto err;
191bc01b
GH		 3820 }
3821
1bbd185f 3822 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3823 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3824 qemu_opts_id(opts));
2274ae9d 3825 goto err;
1bbd185f 3826 }
d654f34e
AL		 3827 for (i = backends; i; i = i->next) {
3828 cd = i->data;
3829
3830 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3831 break;
d654f34e 3832 }
191bc01b 3833 }
d654f34e 3834 if (i == NULL) {
312fd5f2 3835 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3836 qemu_opt_get(opts, "backend"));
e668287d 3837 goto err;
191bc01b
GH		 3838 }
3839
a61ae7f8 3840 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3841
a61ae7f8
PM		 3842 if (qemu_opt_get_bool(opts, "mux", 0)) {
3843 bid = g_strdup_printf("%s-base", id);
3844 }
2c5f4882 3845
a61ae7f8 3846 chr = NULL;
130257dc 3847 backend->type = cd->kind;
a61ae7f8
PM		 3848 if (cd->parse) {
3849 cd->parse(opts, backend, &local_err);
3850 if (local_err) {
3851 error_propagate(errp, local_err);
2c5f4882
GH		 3852 goto qapi_out;
3853 }
d0d7708b
DB		 3854 } else {
3855 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3856 qemu_chr_parse_common(opts, cc);
32bafa8f 3857 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 3858 }
d0d7708b 3859
a61ae7f8
PM		 3860 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3861 if (!ret) {
3862 goto qapi_out;
191bc01b
GH		 3863 }
3864
a61ae7f8
PM		 3865 if (bid) {
3866 qapi_free_ChardevBackend(backend);
3867 qapi_free_ChardevReturn(ret);
3868 backend = g_new0(ChardevBackend, 1);
32bafa8f 3869 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 3870 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 3871 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 3872 ret = qmp_chardev_add(id, backend, errp);
3873 if (!ret) {
3874 chr = qemu_chr_find(bid);
3875 qemu_chr_delete(chr);
3876 chr = NULL;
3877 goto qapi_out;
3878 }
bd5c51ee 3879 }
7591c5c1 3880
a61ae7f8 3881 chr = qemu_chr_find(id);
2274ae9d 3882 chr->opts = opts;
a61ae7f8
PM		 3883
3884qapi_out:
3885 qapi_free_ChardevBackend(backend);
3886 qapi_free_ChardevReturn(ret);
3887 g_free(bid);
191bc01b 3888 return chr;
2274ae9d
GH		 3889
3890err:
3891 qemu_opts_del(opts);
3892 return NULL;
191bc01b
GH		 3893}
3894
33577b47
PD		 3895CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3896 void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3897{
3898 const char *p;
3899 CharDriverState *chr;
191bc01b 3900 QemuOpts *opts;
bd2d80b2 3901 Error *err = NULL;
191bc01b 3902
c845f401
GH		 3903 if (strstart(filename, "chardev:", &p)) {
3904 return qemu_chr_find(p);
3905 }
3906
191bc01b 3907 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3908 if (!opts)
3909 return NULL;
6f97dba0 3910
bd2d80b2 3911 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3912 if (err) {
565f65d2 3913 error_report_err(err);
bd2d80b2 3914 }
7e1b35b4 3915 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3916 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3917 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3918 }
3919 return chr;
3920}
3921
33577b47
PD		 3922CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3923{
3924 CharDriverState *chr;
3925 chr = qemu_chr_new_noreplay(label, filename, init);
3926 if (chr) {
3927 chr->replay = replay_mode != REPLAY_MODE_NONE;
3928 if (chr->replay && chr->chr_ioctl) {
3929 fprintf(stderr,
3930 "Replay: ioctl is not supported for serial devices yet\n");
3931 }
3932 replay_register_char_driver(chr);
3933 }
3934 return chr;
3935}
3936
15f31519 3937void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3938{
3939 if (chr->chr_set_echo) {
3940 chr->chr_set_echo(chr, echo);
3941 }
3942}
3943
8e25daa8 3944void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3945{
8e25daa8 3946 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3947 return;
3948 }
8e25daa8 3949 chr->fe_open = fe_open;
574b711a
HG		 3950 if (chr->chr_set_fe_open) {
3951 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3952 }
3953}
3954
d61b0c9a
MAL		 3955void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3956{
3957 if (chr->chr_fe_event) {
3958 chr->chr_fe_event(chr, event);
3959 }
3960}
3961
2c8a5942
KW		 3962int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3963 GIOFunc func, void *user_data)
23673ca7
AL		 3964{
3965 GSource *src;
3966 guint tag;
3967
3968 if (s->chr_add_watch == NULL) {
3969 return -ENOSYS;
3970 }
3971
3972 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3973 if (!src) {
3974 return -EINVAL;
3975 }
3976
23673ca7
AL		 3977 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3978 tag = g_source_attach(src, NULL);
3979 g_source_unref(src);
3980
3981 return tag;
3982}
3983
44c473de
HG		 3984int qemu_chr_fe_claim(CharDriverState *s)
3985{
3986 if (s->avail_connections < 1) {
3987 return -1;
3988 }
3989 s->avail_connections--;
3990 return 0;
3991}
3992
3993void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3994{
3995 if (qemu_chr_fe_claim(s) != 0) {
3996 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3997 __func__, s->label);
3998 exit(1);
3999 }
4000}
4001
4002void qemu_chr_fe_release(CharDriverState *s)
4003{
4004 s->avail_connections++;
4005}
4006
d0d7708b 4007static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4008{
7267c094
AL		 4009 g_free(chr->filename);
4010 g_free(chr->label);
4ad60880 4011 qemu_opts_del(chr->opts);
d0d7708b
DB		 4012 if (chr->logfd != -1) {
4013 close(chr->logfd);
4014 }
fefd749c 4015 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4016 g_free(chr);
6f97dba0
AL		 4017}
4018
d0d7708b
DB		 4019void qemu_chr_free(CharDriverState *chr)
4020{
4021 if (chr->chr_close) {
4022 chr->chr_close(chr);
4023 }
4024 qemu_chr_free_common(chr);
4025}
4026
1ad78ea5
MAL		 4027void qemu_chr_delete(CharDriverState *chr)
4028{
4029 QTAILQ_REMOVE(&chardevs, chr, next);
4030 qemu_chr_free(chr);
4031}
4032
c5a415a0 4033ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4034{
c5a415a0 4035 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4036 CharDriverState *chr;
4037
72cf2d4f 4038 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4039 ChardevInfoList *info = g_malloc0(sizeof(*info));
4040 info->value = g_malloc0(sizeof(*info->value));
4041 info->value->label = g_strdup(chr->label);
4042 info->value->filename = g_strdup(chr->filename);
32a97ea1 4043 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4044
4045 info->next = chr_list;
4046 chr_list = info;
6f97dba0 4047 }
588b3832 4048
c5a415a0 4049 return chr_list;
6f97dba0 4050}
c845f401 4051
77d1c3c6
MK		 4052ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4053{
4054 ChardevBackendInfoList *backend_list = NULL;
4055 CharDriver *c = NULL;
4056 GSList *i = NULL;
4057
4058 for (i = backends; i; i = i->next) {
4059 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4060 c = i->data;
4061 info->value = g_malloc0(sizeof(*info->value));
4062 info->value->name = g_strdup(c->name);
4063
4064 info->next = backend_list;
4065 backend_list = info;
4066 }
4067
4068 return backend_list;
4069}
4070
c845f401
GH		 4071CharDriverState *qemu_chr_find(const char *name)
4072{
4073 CharDriverState *chr;
4074
72cf2d4f 4075 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4076 if (strcmp(chr->label, name) != 0)
4077 continue;
4078 return chr;
4079 }
4080 return NULL;
4081}
0beb4942
AL		 4082
4083/* Get a character (serial) device interface. */
4084CharDriverState *qemu_char_get_next_serial(void)
4085{
4086 static int next_serial;
456d6069 4087 CharDriverState *chr;
0beb4942
AL		 4088
4089 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 4090
4091 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4092 chr = serial_hds[next_serial++];
4093 qemu_chr_fe_claim_no_fail(chr);
4094 return chr;
4095 }
4096 return NULL;
0beb4942
AL		 4097}
4098
4d454574
PB		 4099QemuOptsList qemu_chardev_opts = {
4100 .name = "chardev",
4101 .implied_opt_name = "backend",
4102 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4103 .desc = {
4104 {
4105 .name = "backend",
4106 .type = QEMU_OPT_STRING,
4107 },{
4108 .name = "path",
4109 .type = QEMU_OPT_STRING,
4110 },{
4111 .name = "host",
4112 .type = QEMU_OPT_STRING,
4113 },{
4114 .name = "port",
4115 .type = QEMU_OPT_STRING,
4116 },{
4117 .name = "localaddr",
4118 .type = QEMU_OPT_STRING,
4119 },{
4120 .name = "localport",
4121 .type = QEMU_OPT_STRING,
4122 },{
4123 .name = "to",
4124 .type = QEMU_OPT_NUMBER,
4125 },{
4126 .name = "ipv4",
4127 .type = QEMU_OPT_BOOL,
4128 },{
4129 .name = "ipv6",
4130 .type = QEMU_OPT_BOOL,
4131 },{
4132 .name = "wait",
4133 .type = QEMU_OPT_BOOL,
4134 },{
4135 .name = "server",
4136 .type = QEMU_OPT_BOOL,
4137 },{
4138 .name = "delay",
4139 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4140 },{
4141 .name = "reconnect",
4142 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4143 },{
4144 .name = "telnet",
4145 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4146 },{
4147 .name = "tls-creds",
4148 .type = QEMU_OPT_STRING,
4d454574
PB		 4149 },{
4150 .name = "width",
4151 .type = QEMU_OPT_NUMBER,
4152 },{
4153 .name = "height",
4154 .type = QEMU_OPT_NUMBER,
4155 },{
4156 .name = "cols",
4157 .type = QEMU_OPT_NUMBER,
4158 },{
4159 .name = "rows",
4160 .type = QEMU_OPT_NUMBER,
4161 },{
4162 .name = "mux",
4163 .type = QEMU_OPT_BOOL,
4164 },{
4165 .name = "signal",
4166 .type = QEMU_OPT_BOOL,
4167 },{
4168 .name = "name",
4169 .type = QEMU_OPT_STRING,
4170 },{
4171 .name = "debug",
4172 .type = QEMU_OPT_NUMBER,
51767e7c 4173 },{
3949e594 4174 .name = "size",
de1cc36e 4175 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4176 },{
4177 .name = "chardev",
4178 .type = QEMU_OPT_STRING,
31e38a22
OK		 4179 },{
4180 .name = "append",
4181 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4182 },{
4183 .name = "logfile",
4184 .type = QEMU_OPT_STRING,
4185 },{
4186 .name = "logappend",
4187 .type = QEMU_OPT_BOOL,
4d454574
PB		 4188 },
4189 { /* end of list */ }
4190 },
4191};
f1a1a356 4192
ffbdbe59
GH		 4193#ifdef _WIN32
4194
fd5b036c
PB		 4195static CharDriverState *qmp_chardev_open_file(const char *id,
4196 ChardevBackend *backend,
4197 ChardevReturn *ret,
4198 Error **errp)
ffbdbe59 4199{
32bafa8f 4200 ChardevFile *file = backend->u.file.data;
f194a1ae 4201 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59
GH		 4202 HANDLE out;
4203
e859eda5 4204 if (file->has_in) {
ffbdbe59
GH		 4205 error_setg(errp, "input file not supported");
4206 return NULL;
4207 }
4208
4209 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4210 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4211 if (out == INVALID_HANDLE_VALUE) {
4212 error_setg(errp, "open %s failed", file->out);
4213 return NULL;
4214 }
d0d7708b 4215 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4216}
4217
6511d396
PB		 4218static CharDriverState *qmp_chardev_open_serial(const char *id,
4219 ChardevBackend *backend,
4220 ChardevReturn *ret,
d36b2b90 4221 Error **errp)
d59044ef 4222{
32bafa8f 4223 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4224 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4225 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4226}
4227
ffbdbe59
GH		 4228#else /* WIN32 */
4229
4230static int qmp_chardev_open_file_source(char *src, int flags,
4231 Error **errp)
4232{
4233 int fd = -1;
4234
4235 TFR(fd = qemu_open(src, flags, 0666));
4236 if (fd == -1) {
20c39760 4237 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4238 }
4239 return fd;
4240}
4241
fd5b036c
PB		 4242static CharDriverState *qmp_chardev_open_file(const char *id,
4243 ChardevBackend *backend,
4244 ChardevReturn *ret,
4245 Error **errp)
ffbdbe59 4246{
32bafa8f 4247 ChardevFile *file = backend->u.file.data;
f194a1ae 4248 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4249 int flags, in = -1, out;
ffbdbe59 4250
31e38a22
OK		 4251 flags = O_WRONLY | O_CREAT | O_BINARY;
4252 if (file->has_append && file->append) {
4253 flags |= O_APPEND;
4254 } else {
4255 flags |= O_TRUNC;
4256 }
4257
ffbdbe59 4258 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4259 if (out < 0) {
ffbdbe59
GH		 4260 return NULL;
4261 }
4262
e859eda5 4263 if (file->has_in) {
ffbdbe59
GH		 4264 flags = O_RDONLY;
4265 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4266 if (in < 0) {
ffbdbe59
GH		 4267 qemu_close(out);
4268 return NULL;
4269 }
4270 }
4271
d0d7708b 4272 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4273}
4274
d809ab95 4275#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4276static CharDriverState *qmp_chardev_open_serial(const char *id,
4277 ChardevBackend *backend,
4278 ChardevReturn *ret,
d36b2b90 4279 Error **errp)
d59044ef 4280{
32bafa8f 4281 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4282 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4283 int fd;
4284
4285 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4286 if (fd < 0) {
d36b2b90 4287 return NULL;
39099991 4288 }
f9e8cacc 4289 qemu_set_nonblock(fd);
d0d7708b 4290 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4291}
6511d396 4292#endif
d36b2b90 4293
d809ab95 4294#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4295static CharDriverState *qmp_chardev_open_parallel(const char *id,
4296 ChardevBackend *backend,
4297 ChardevReturn *ret,
d36b2b90
MA		 4298 Error **errp)
4299{
32bafa8f 4300 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4301 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4302 int fd;
4303
4304 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4305 if (fd < 0) {
d59044ef
GH		 4306 return NULL;
4307 }
d0d7708b 4308 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4309}
d809ab95 4310#endif
d59044ef 4311
ffbdbe59
GH		 4312#endif /* WIN32 */
4313
5dd1f02b
CM		 4314static gboolean socket_reconnect_timeout(gpointer opaque)
4315{
4316 CharDriverState *chr = opaque;
4317 TCPCharDriver *s = chr->opaque;
317856ca 4318 QIOChannelSocket *sioc;
5dd1f02b
CM		 4319
4320 s->reconnect_timer = 0;
4321
4322 if (chr->be_open) {
4323 return false;
4324 }
4325
317856ca
DB		 4326 sioc = qio_channel_socket_new();
4327 qio_channel_socket_connect_async(sioc, s->addr,
4328 qemu_chr_socket_connected,
4329 chr, NULL);
5dd1f02b
CM		 4330
4331 return false;
4332}
4333
dbba8d1b
PB		 4334static CharDriverState *qmp_chardev_open_socket(const char *id,
4335 ChardevBackend *backend,
4336 ChardevReturn *ret,
f6bd5d6e
GH		 4337 Error **errp)
4338{
43ded1a0
CM		 4339 CharDriverState *chr;
4340 TCPCharDriver *s;
32bafa8f 4341 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4342 SocketAddress *addr = sock->addr;
4343 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4344 bool is_listen = sock->has_server ? sock->server : true;
4345 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4346 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4347 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4348 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4349 QIOChannelSocket *sioc = NULL;
43ded1a0 4350
d0d7708b
DB		 4351 chr = qemu_chr_alloc(common, errp);
4352 if (!chr) {
4353 return NULL;
4354 }
2d528d45 4355 s = g_new0(TCPCharDriver, 1);
43ded1a0 4356
130257dc 4357 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4358 s->is_listen = is_listen;
4359 s->is_telnet = is_telnet;
43ded1a0 4360 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4361 if (sock->tls_creds) {
4362 Object *creds;
4363 creds = object_resolve_path_component(
4364 object_get_objects_root(), sock->tls_creds);
4365 if (!creds) {
4366 error_setg(errp, "No TLS credentials with id '%s'",
4367 sock->tls_creds);
4368 goto error;
4369 }
4370 s->tls_creds = (QCryptoTLSCreds *)
4371 object_dynamic_cast(creds,
4372 TYPE_QCRYPTO_TLS_CREDS);
4373 if (!s->tls_creds) {
4374 error_setg(errp, "Object with id '%s' is not TLS credentials",
4375 sock->tls_creds);
4376 goto error;
4377 }
4378 object_ref(OBJECT(s->tls_creds));
4379 if (is_listen) {
4380 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4381 error_setg(errp, "%s",
4382 "Expected TLS credentials for server endpoint");
4383 goto error;
4384 }
4385 } else {
4386 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4387 error_setg(errp, "%s",
4388 "Expected TLS credentials for client endpoint");
4389 goto error;
4390 }
4391 }
4392 }
4393
cfb429cb 4394 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4395
4396 chr->opaque = s;
4397 chr->chr_write = tcp_chr_write;
4398 chr->chr_sync_read = tcp_chr_sync_read;
4399 chr->chr_close = tcp_chr_close;
4400 chr->get_msgfds = tcp_get_msgfds;
4401 chr->set_msgfds = tcp_set_msgfds;
4402 chr->chr_add_client = tcp_chr_add_client;
4403 chr->chr_add_watch = tcp_chr_add_watch;
4404 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4405 /* be isn't opened until we get a connection */
4406 chr->explicit_be_open = true;
4407
0ff0fad2
DB		 4408 chr->filename = SocketAddress_to_str("disconnected:",
4409 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4410
4411 if (is_listen) {
43ded1a0
CM		 4412 if (is_telnet) {
4413 s->do_telnetopt = 1;
4414 }
5dd1f02b
CM		 4415 } else if (reconnect > 0) {
4416 s->reconnect_time = reconnect;
f6bd5d6e 4417 }
43ded1a0 4418
08b758b4 4419 sioc = qio_channel_socket_new();
5008e5b7 4420 if (s->reconnect_time) {
317856ca
DB		 4421 qio_channel_socket_connect_async(sioc, s->addr,
4422 qemu_chr_socket_connected,
4423 chr, NULL);
08b758b4
DB		 4424 } else if (s->is_listen) {
4425 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4426 goto error;
4427 }
4428 s->listen_ioc = sioc;
4429 if (is_waitconnect) {
4430 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4431 chr->filename);
4432 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4433 }
9894dc0c 4434 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
08b758b4
DB		 4435 if (!s->ioc) {
4436 s->listen_tag = qio_channel_add_watch(
4437 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
4438 }
4439 } else {
4440 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
4441 goto error;
4442 }
4443 tcp_chr_new_client(chr, sioc);
4444 object_unref(OBJECT(sioc));
43ded1a0
CM		 4445 }
4446
4447 return chr;
a8fb5427
DB		 4448
4449 error:
08b758b4
DB		 4450 if (sioc) {
4451 object_unref(OBJECT(sioc));
4452 }
a8fb5427
DB		 4453 if (s->tls_creds) {
4454 object_unref(OBJECT(s->tls_creds));
4455 }
4456 g_free(s);
4457 qemu_chr_free_common(chr);
4458 return NULL;
f6bd5d6e
GH		 4459}
4460
e79b80da
PB		 4461static CharDriverState *qmp_chardev_open_udp(const char *id,
4462 ChardevBackend *backend,
4463 ChardevReturn *ret,
08d0ab3f 4464 Error **errp)
3ecc059d 4465{
32bafa8f 4466 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4467 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4468 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4469
9894dc0c 4470 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4471 udp->local, udp->remote,
9894dc0c
DB		 4472 errp) < 0) {
4473 object_unref(OBJECT(sioc));
3ecc059d
GH		 4474 return NULL;
4475 }
9894dc0c 4476 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4477}
4478
f1a1a356
GH		 4479ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4480 Error **errp)
4481{
4482 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4483 CharDriverState *chr = NULL;
eaeba653 4484 Error *local_err = NULL;
4ca17281
PB		 4485 GSList *i;
4486 CharDriver *cd;
f1a1a356
GH		 4487
4488 chr = qemu_chr_find(id);
4489 if (chr) {
4490 error_setg(errp, "Chardev '%s' already exists", id);
4491 g_free(ret);
4492 return NULL;
4493 }
4494
4ca17281
PB		 4495 for (i = backends; i; i = i->next) {
4496 cd = i->data;
4497
130257dc 4498 if (cd->kind == backend->type) {
4ca17281
PB		 4499 chr = cd->create(id, backend, ret, &local_err);
4500 if (local_err) {
4501 error_propagate(errp, local_err);
4502 goto out_error;
4503 }
4504 break;
4505 }
4506 }
4507
4508 if (chr == NULL) {
1c3af0f4
PB		 4509 assert(!i);
4510 error_setg(errp, "chardev backend not available");
4511 goto out_error;
eaeba653
PB		 4512 }
4513
4514 chr->label = g_strdup(id);
4515 chr->avail_connections =
130257dc 4516 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4517 if (!chr->filename) {
130257dc 4518 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4519 }
eaeba653
PB		 4520 if (!chr->explicit_be_open) {
4521 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4522 }
4523 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4524 return ret;
4525
4526out_error:
4527 g_free(ret);
4528 return NULL;
f1a1a356
GH		 4529}
4530
4531void qmp_chardev_remove(const char *id, Error **errp)
4532{
4533 CharDriverState *chr;
4534
4535 chr = qemu_chr_find(id);
8108fd3e 4536 if (chr == NULL) {
f1a1a356
GH		 4537 error_setg(errp, "Chardev '%s' not found", id);
4538 return;
4539 }
4540 if (chr->chr_can_read || chr->chr_read ||
4541 chr->chr_event || chr->handler_opaque) {
4542 error_setg(errp, "Chardev '%s' is busy", id);
4543 return;
4544 }
33577b47
PD		 4545 if (chr->replay) {
4546 error_setg(errp,
4547 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4548 return;
4549 }
f1a1a356
GH		 4550 qemu_chr_delete(chr);
4551}
d654f34e
AL		 4552
4553static void register_types(void)
4554{
4ca17281 4555 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4556 qemu_chr_open_null);
e4d50d47 4557 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4558 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4559 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4560 qmp_chardev_open_udp);
e4d50d47 4561 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4562 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4563 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4564 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4565 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4566 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4567#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4568 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4569 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4570 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4571 qemu_chr_parse_serial, qmp_chardev_open_serial);
4572#endif
38bfb1a6 4573#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4574 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4575 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4576 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4577 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4578#endif
c2e75a43 4579#ifdef HAVE_CHARDEV_PTY
4ca17281 4580 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4581 qemu_chr_open_pty);
4582#endif
122e5ed4 4583#ifdef _WIN32
4ca17281 4584 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4585 qemu_chr_open_win_con);
4586#endif
e4d50d47 4587 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4588 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4589 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4590 qemu_chr_open_mux);
c11ed966 4591 /* Bug-compatibility: */
e4d50d47 4592 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4593 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4594 /* this must be done after machine init, since we register FEs with muxes
4595 * as part of realize functions like serial_isa_realizefn when -nographic
4596 * is specified
4597 */
4598 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4599}
4600
4601type_init(register_types);
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