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vhost-user: only initialize queue 0 CharBackend
[mirror_qemu.git] / qemu-char.c
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6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
37f9e0a2 35#include "qapi/clone-visitor.h"
cfb429cb 36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
517b3d40 42#include "qemu/help_option.h"
6f97dba0 43
6f97dba0
AL		 44#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
6f97dba0 50#include <sys/ioctl.h>
24646c7e 51#include <sys/resource.h>
6f97dba0
AL		 52#include <sys/socket.h>
53#include <netinet/in.h>
24646c7e 54#include <net/if.h>
24646c7e 55#include <arpa/inet.h>
6f97dba0
AL		 56#include <netdb.h>
57#include <sys/select.h>
71e72a19 58#ifdef CONFIG_BSD
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
6f97dba0
AL		 72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
c4095726 90#define TCP_MAX_FDS 16
9bd7854e 91
6dfa8298
MAL		 92typedef struct MuxDriver MuxDriver;
93
cfb429cb
CM		 94/***********************************************************/
95/* Socket address helpers */
cfb429cb 96
0ff0fad2
DB		 97static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
98 bool is_listen, bool is_telnet)
16cc4ffe 99{
130257dc 100 switch (addr->type) {
16cc4ffe 101 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 102 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 103 is_telnet ? "telnet" : "tcp",
104 addr->u.inet.data->host,
105 addr->u.inet.data->port,
106 is_listen ? ",server" : "");
16cc4ffe
CM		 107 break;
108 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 109 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 110 addr->u.q_unix.data->path,
0ff0fad2 111 is_listen ? ",server" : "");
16cc4ffe
CM		 112 break;
113 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 114 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 115 is_listen ? ",server" : "");
16cc4ffe
CM		 116 break;
117 default:
118 abort();
119 }
120}
121
0ff0fad2
DB		 122static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
123 struct sockaddr_storage *ps, socklen_t ps_len,
124 bool is_listen, bool is_telnet)
16cc4ffe 125{
01ca519f
CM		 126 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
127 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 128 const char *left = "", *right = "";
129
130 switch (ss->ss_family) {
131#ifndef _WIN32
132 case AF_UNIX:
0ff0fad2
DB		 133 return g_strdup_printf("unix:%s%s",
134 ((struct sockaddr_un *)(ss))->sun_path,
135 is_listen ? ",server" : "");
16cc4ffe
CM		 136#endif
137 case AF_INET6:
138 left = "[";
139 right = "]";
140 /* fall through */
141 case AF_INET:
01ca519f
CM		 142 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
143 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
144 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
145 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 146 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
147 is_telnet ? "telnet" : "tcp",
148 left, shost, right, sserv,
149 is_listen ? ",server" : "",
150 left, phost, right, pserv);
16cc4ffe
CM		 151
152 default:
0ff0fad2 153 return g_strdup_printf("unknown");
16cc4ffe
CM		 154 }
155}
156
6f97dba0
AL		 157/***********************************************************/
158/* character device */
159
72cf2d4f
BS		 160static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
161 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 162
d0d7708b
DB		 163static void qemu_chr_free_common(CharDriverState *chr);
164
165CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 166{
167 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 168 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 169
170 if (backend->has_logfile) {
171 int flags = O_WRONLY | O_CREAT;
172 if (backend->has_logappend &&
173 backend->logappend) {
174 flags |= O_APPEND;
175 } else {
176 flags |= O_TRUNC;
177 }
178 chr->logfd = qemu_open(backend->logfile, flags, 0666);
179 if (chr->logfd < 0) {
180 error_setg_errno(errp, errno,
181 "Unable to open logfile %s",
182 backend->logfile);
183 g_free(chr);
184 return NULL;
185 }
186 } else {
187 chr->logfd = -1;
188 }
189
db39fcf1
PB		 190 return chr;
191}
192
a425d23f 193void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 194{
73cdf3f2
AG		 195 /* Keep track if the char device is open */
196 switch (event) {
197 case CHR_EVENT_OPENED:
16665b94 198 s->be_open = 1;
73cdf3f2
AG		 199 break;
200 case CHR_EVENT_CLOSED:
16665b94 201 s->be_open = 0;
73cdf3f2
AG		 202 break;
203 }
204
6f97dba0
AL		 205 if (!s->chr_event)
206 return;
207 s->chr_event(s->handler_opaque, event);
208}
209
fee204fd 210void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 211{
bd5c51ee 212 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 213}
214
d0d7708b
DB		 215
216/* Not reporting errors from writing to logfile, as logs are
217 * defined to be "best effort" only */
218static void qemu_chr_fe_write_log(CharDriverState *s,
219 const uint8_t *buf, size_t len)
220{
221 size_t done = 0;
222 ssize_t ret;
223
224 if (s->logfd < 0) {
225 return;
226 }
227
228 while (done < len) {
53628efb
DB		 229 retry:
230 ret = write(s->logfd, buf + done, len - done);
231 if (ret == -1 && errno == EAGAIN) {
232 g_usleep(100);
233 goto retry;
234 }
d0d7708b
DB		 235
236 if (ret <= 0) {
237 return;
238 }
239 done += ret;
240 }
241}
242
33577b47
PD		 243static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
244{
245 int res = 0;
246 *offset = 0;
247
248 qemu_mutex_lock(&s->chr_write_lock);
249 while (*offset < len) {
53628efb
DB		 250 retry:
251 res = s->chr_write(s, buf + *offset, len - *offset);
252 if (res < 0 && errno == EAGAIN) {
253 g_usleep(100);
254 goto retry;
255 }
33577b47
PD		 256
257 if (res <= 0) {
258 break;
259 }
260
261 *offset += res;
262 }
263 if (*offset > 0) {
264 qemu_chr_fe_write_log(s, buf, *offset);
265 }
266 qemu_mutex_unlock(&s->chr_write_lock);
267
268 return res;
269}
270
5345fdb4 271int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len)
6f97dba0 272{
5345fdb4 273 CharDriverState *s = be->chr;
9005b2a7
PB		 274 int ret;
275
33577b47
PD		 276 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
277 int offset;
278 replay_char_write_event_load(&ret, &offset);
279 assert(offset <= len);
280 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
281 return ret;
282 }
283
9005b2a7
PB		 284 qemu_mutex_lock(&s->chr_write_lock);
285 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 286
287 if (ret > 0) {
288 qemu_chr_fe_write_log(s, buf, ret);
289 }
290
9005b2a7 291 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 292
293 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
294 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
295 }
296
9005b2a7 297 return ret;
6f97dba0
AL		 298}
299
5345fdb4 300static int qemu_chr_write_all(CharDriverState *s, const uint8_t *buf, int len)
cd18720a 301{
33577b47
PD		 302 int offset;
303 int res;
cd18720a 304
33577b47
PD		 305 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
306 replay_char_write_event_load(&res, &offset);
307 assert(offset <= len);
308 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
309 return res;
310 }
cd18720a 311
33577b47 312 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 313
33577b47
PD		 314 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
315 replay_char_write_event_save(res, offset);
cd18720a
AL		 316 }
317
9005b2a7
PB		 318 if (res < 0) {
319 return res;
320 }
cd18720a
AL		 321 return offset;
322}
323
5345fdb4 324int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len)
7b0bfdf5 325{
5345fdb4
MAL		 326 CharDriverState *s = be->chr;
327
328 return qemu_chr_write_all(s, buf, len);
329}
330
331int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len)
332{
333 CharDriverState *s = be->chr;
7b0bfdf5
NN		 334 int offset = 0, counter = 10;
335 int res;
336
337 if (!s->chr_sync_read) {
338 return 0;
339 }
33577b47
PD		 340
341 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
342 return replay_char_read_all_load(buf);
343 }
7b0bfdf5
NN		 344
345 while (offset < len) {
53628efb
DB		 346 retry:
347 res = s->chr_sync_read(s, buf + offset, len - offset);
348 if (res == -1 && errno == EAGAIN) {
349 g_usleep(100);
350 goto retry;
351 }
7b0bfdf5
NN		 352
353 if (res == 0) {
354 break;
355 }
356
357 if (res < 0) {
33577b47
PD		 358 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
359 replay_char_read_all_save_error(res);
360 }
7b0bfdf5
NN		 361 return res;
362 }
363
364 offset += res;
365
366 if (!counter--) {
367 break;
368 }
369 }
370
33577b47
PD		 371 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
372 replay_char_read_all_save_buf(buf, offset);
373 }
7b0bfdf5
NN		 374 return offset;
375}
376
5345fdb4 377int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg)
6f97dba0 378{
5345fdb4 379 CharDriverState *s = be->chr;
33577b47
PD		 380 int res;
381 if (!s->chr_ioctl || s->replay) {
382 res = -ENOTSUP;
383 } else {
384 res = s->chr_ioctl(s, cmd, arg);
385 }
386
387 return res;
6f97dba0
AL		 388}
389
909cda12 390int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 391{
392 if (!s->chr_can_read)
393 return 0;
394 return s->chr_can_read(s->handler_opaque);
395}
396
33577b47 397void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 398{
ac310734
SW		 399 if (s->chr_read) {
400 s->chr_read(s->handler_opaque, buf, len);
401 }
6f97dba0
AL		 402}
403
33577b47
PD		 404void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
405{
406 if (s->replay) {
407 if (replay_mode == REPLAY_MODE_PLAY) {
408 return;
409 }
410 replay_chr_be_write(s, buf, len);
411 } else {
412 qemu_chr_be_write_impl(s, buf, len);
413 }
414}
415
5345fdb4 416int qemu_chr_fe_get_msgfd(CharBackend *be)
7d174059 417{
5345fdb4 418 CharDriverState *s = be->chr;
c76bf6bb 419 int fd;
5345fdb4 420 int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1;
33577b47
PD		 421 if (s->replay) {
422 fprintf(stderr,
423 "Replay: get msgfd is not supported for serial devices yet\n");
424 exit(1);
425 }
426 return res;
c76bf6bb
NN		 427}
428
5345fdb4 429int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len)
c76bf6bb 430{
5345fdb4
MAL		 431 CharDriverState *s = be->chr;
432
c76bf6bb 433 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 434}
435
5345fdb4 436int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num)
d39aac7a 437{
5345fdb4
MAL		 438 CharDriverState *s = be->chr;
439
d39aac7a
NN		 440 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
441}
442
13661089
DB		 443int qemu_chr_add_client(CharDriverState *s, int fd)
444{
445 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
446}
447
5345fdb4 448void qemu_chr_fe_accept_input(CharBackend *be)
6f97dba0 449{
5345fdb4
MAL		 450 CharDriverState *s = be->chr;
451
6f97dba0
AL		 452 if (s->chr_accept_input)
453 s->chr_accept_input(s);
98c8ee1d 454 qemu_notify_event();
6f97dba0
AL		 455}
456
5345fdb4 457void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...)
6f97dba0 458{
9bd7854e 459 char buf[READ_BUF_LEN];
6f97dba0
AL		 460 va_list ap;
461 va_start(ap, fmt);
462 vsnprintf(buf, sizeof(buf), fmt, ap);
90f998f5
DB		 463 /* XXX this blocks entire thread. Rewrite to use
464 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 465 qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 466 va_end(ap);
467}
468
386a5a1e 469static void remove_fd_in_watch(CharDriverState *chr);
6dfa8298
MAL		 470static int mux_chr_new_handler_tag(CharDriverState *chr, Error **errp);
471static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context);
472static void mux_set_focus(MuxDriver *d, int focus);
473
6f97dba0
AL		 474static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
475{
476 return len;
477}
478
0d64992b
PB		 479static CharDriverState *qemu_chr_open_null(const char *id,
480 ChardevBackend *backend,
481 ChardevReturn *ret,
482 Error **errp)
6f97dba0
AL		 483{
484 CharDriverState *chr;
32bafa8f 485 ChardevCommon *common = backend->u.null.data;
6f97dba0 486
d0d7708b
DB		 487 chr = qemu_chr_alloc(common, errp);
488 if (!chr) {
489 return NULL;
490 }
6f97dba0 491 chr->chr_write = null_chr_write;
bd5c51ee 492 chr->explicit_be_open = true;
1f51470d 493 return chr;
6f97dba0
AL		 494}
495
496/* MUX driver for serial I/O splitting */
6f97dba0
AL		 497#define MAX_MUX 4
498#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
499#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
6dfa8298 500struct MuxDriver {
7b27a769 501 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 502 IOReadHandler *chr_read[MAX_MUX];
503 IOEventHandler *chr_event[MAX_MUX];
504 void *ext_opaque[MAX_MUX];
ecb672d1 505 CharBackend chr;
799f1f23 506 int focus;
6f97dba0
AL		 507 int mux_cnt;
508 int term_got_escape;
509 int max_size;
a80bf99f
AL		 510 /* Intermediate input buffer allows to catch escape sequences even if the
511 currently active device is not accepting any input - but only until it
512 is full as well. */
513 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
514 int prod[MAX_MUX];
515 int cons[MAX_MUX];
2d22959d 516 int timestamps;
9005b2a7
PB		 517
518 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 519 int linestart;
2d22959d 520 int64_t timestamps_start;
6dfa8298 521};
6f97dba0 522
9005b2a7 523/* Called with chr_write_lock held. */
6f97dba0
AL		 524static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
525{
526 MuxDriver *d = chr->opaque;
527 int ret;
2d22959d 528 if (!d->timestamps) {
5345fdb4 529 ret = qemu_chr_fe_write(&d->chr, buf, len);
6f97dba0
AL		 530 } else {
531 int i;
532
533 ret = 0;
4ab312f7
JK		 534 for (i = 0; i < len; i++) {
535 if (d->linestart) {
6f97dba0
AL		 536 char buf1[64];
537 int64_t ti;
538 int secs;
539
bc72ad67 540 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 541 if (d->timestamps_start == -1)
542 d->timestamps_start = ti;
543 ti -= d->timestamps_start;
a4bb1db8 544 secs = ti / 1000;
6f97dba0
AL		 545 snprintf(buf1, sizeof(buf1),
546 "[%02d:%02d:%02d.%03d] ",
547 secs / 3600,
548 (secs / 60) % 60,
549 secs % 60,
a4bb1db8 550 (int)(ti % 1000));
90f998f5
DB		 551 /* XXX this blocks entire thread. Rewrite to use
552 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4
MAL		 553 qemu_chr_fe_write_all(&d->chr,
554 (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 555 d->linestart = 0;
556 }
5345fdb4 557 ret += qemu_chr_fe_write(&d->chr, buf + i, 1);
4ab312f7
JK		 558 if (buf[i] == '\n') {
559 d->linestart = 1;
6f97dba0
AL		 560 }
561 }
562 }
563 return ret;
564}
565
566static const char * const mux_help[] = {
567 "% h print this help\n\r",
568 "% x exit emulator\n\r",
569 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 570 "% t toggle console timestamps\n\r",
6f97dba0
AL		 571 "% b send break (magic sysrq)\n\r",
572 "% c switch between console and monitor\n\r",
573 "% % sends %\n\r",
574 NULL
575};
576
577int term_escape_char = 0x01; /* ctrl-a is used for escape */
578static void mux_print_help(CharDriverState *chr)
579{
580 int i, j;
581 char ebuf[15] = "Escape-Char";
582 char cbuf[50] = "\n\r";
583
584 if (term_escape_char > 0 && term_escape_char < 26) {
585 snprintf(cbuf, sizeof(cbuf), "\n\r");
586 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
587 } else {
588 snprintf(cbuf, sizeof(cbuf),
589 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
590 term_escape_char);
591 }
90f998f5
DB		 592 /* XXX this blocks entire thread. Rewrite to use
593 * qemu_chr_fe_write and background I/O callbacks */
5345fdb4 594 qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 595 for (i = 0; mux_help[i] != NULL; i++) {
596 for (j=0; mux_help[i][j] != '\0'; j++) {
597 if (mux_help[i][j] == '%')
5345fdb4 598 qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 599 else
5345fdb4 600 qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 601 }
602 }
603}
604
2724b180
AL		 605static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
606{
607 if (d->chr_event[mux_nr])
608 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
609}
610
6f97dba0
AL		 611static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
612{
613 if (d->term_got_escape) {
614 d->term_got_escape = 0;
615 if (ch == term_escape_char)
616 goto send_char;
617 switch(ch) {
618 case '?':
619 case 'h':
620 mux_print_help(chr);
621 break;
622 case 'x':
623 {
624 const char *term = "QEMU: Terminated\n\r";
5345fdb4 625 qemu_chr_write_all(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 626 exit(0);
627 break;
628 }
629 case 's':
da31d594 630 blk_commit_all();
6f97dba0
AL		 631 break;
632 case 'b':
a425d23f 633 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 634 break;
635 case 'c':
6dfa8298 636 assert(d->mux_cnt > 0); /* handler registered with first fe */
6f97dba0 637 /* Switch to the next registered device */
6dfa8298 638 mux_set_focus(d, (d->focus + 1) % d->mux_cnt);
6f97dba0 639 break;
2d22959d
JK		 640 case 't':
641 d->timestamps = !d->timestamps;
642 d->timestamps_start = -1;
4ab312f7 643 d->linestart = 0;
2d22959d 644 break;
6f97dba0
AL		 645 }
646 } else if (ch == term_escape_char) {
647 d->term_got_escape = 1;
648 } else {
649 send_char:
650 return 1;
651 }
652 return 0;
653}
654
655static void mux_chr_accept_input(CharDriverState *chr)
656{
6f97dba0 657 MuxDriver *d = chr->opaque;
799f1f23 658 int m = d->focus;
6f97dba0 659
a80bf99f 660 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 661 d->chr_can_read[m] &&
662 d->chr_can_read[m](d->ext_opaque[m])) {
663 d->chr_read[m](d->ext_opaque[m],
a80bf99f 664 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 665 }
666}
667
668static int mux_chr_can_read(void *opaque)
669{
670 CharDriverState *chr = opaque;
671 MuxDriver *d = chr->opaque;
799f1f23 672 int m = d->focus;
6f97dba0 673
a80bf99f 674 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 675 return 1;
a80bf99f
AL		 676 if (d->chr_can_read[m])
677 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 678 return 0;
679}
680
681static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
682{
683 CharDriverState *chr = opaque;
684 MuxDriver *d = chr->opaque;
799f1f23 685 int m = d->focus;
6f97dba0
AL		 686 int i;
687
688 mux_chr_accept_input (opaque);
689
690 for(i = 0; i < size; i++)
691 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 692 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 693 d->chr_can_read[m] &&
694 d->chr_can_read[m](d->ext_opaque[m]))
695 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
696 else
a80bf99f 697 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 698 }
699}
700
701static void mux_chr_event(void *opaque, int event)
702{
703 CharDriverState *chr = opaque;
704 MuxDriver *d = chr->opaque;
705 int i;
706
707 /* Send the event to all registered listeners */
708 for (i = 0; i < d->mux_cnt; i++)
2724b180 709 mux_chr_send_event(d, i, event);
6f97dba0
AL		 710}
711
e92aa36a 712static void mux_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 713 GMainContext *context,
714 int tag)
6f97dba0
AL		 715{
716 MuxDriver *d = chr->opaque;
717
6dfa8298
MAL		 718 assert(tag >= 0);
719 assert(tag < d->mux_cnt);
720
721 d->ext_opaque[tag] = chr->handler_opaque;
722 d->chr_can_read[tag] = chr->chr_can_read;
723 d->chr_read[tag] = chr->chr_read;
724 d->chr_event[tag] = chr->chr_event;
6f97dba0
AL		 725}
726
7b7ab18d
MR		 727static bool muxes_realized;
728
729/**
730 * Called after processing of default and command-line-specified
731 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
732 * to a mux chardev. This is done here to ensure that
733 * output/prompts/banners are only displayed for the FE that has
734 * focus when initial command-line processing/machine init is
735 * completed.
736 *
737 * After this point, any new FE attached to any new or existing
738 * mux will receive CHR_EVENT_OPENED notifications for the BE
739 * immediately.
740 */
741static void muxes_realize_done(Notifier *notifier, void *unused)
742{
743 CharDriverState *chr;
744
745 QTAILQ_FOREACH(chr, &chardevs, next) {
746 if (chr->is_mux) {
747 MuxDriver *d = chr->opaque;
748 int i;
749
750 /* send OPENED to all already-attached FEs */
751 for (i = 0; i < d->mux_cnt; i++) {
752 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
753 }
754 /* mark mux as OPENED so any new FEs will immediately receive
755 * OPENED event
756 */
757 qemu_chr_be_generic_open(chr);
758 }
759 }
760 muxes_realized = true;
761}
762
763static Notifier muxes_realize_notify = {
764 .notify = muxes_realize_done,
765};
766
3f0838ab
KB		 767static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
768{
769 MuxDriver *d = s->opaque;
5345fdb4
MAL		 770 CharDriverState *chr = qemu_chr_fe_get_driver(&d->chr);
771
772 return chr->chr_add_watch(chr, cond);
3f0838ab
KB		 773}
774
1371a369
MAL		 775static void mux_chr_close(struct CharDriverState *chr)
776{
777 MuxDriver *d = chr->opaque;
778
779 g_free(d);
780}
781
6dfa8298
MAL		 782static int mux_chr_new_handler_tag(CharDriverState *chr, Error **errp)
783{
784 MuxDriver *d = chr->opaque;
785
786 if (d->mux_cnt >= MAX_MUX) {
787 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
788 return -1;
789 }
790
791 return d->mux_cnt++;
792}
793
794static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context)
795{
796 MuxDriver *d = chr->opaque;
797
798 /* Fix up the real driver with mux routines */
ecb672d1
MAL		 799 qemu_chr_fe_set_handlers(&d->chr,
800 mux_chr_can_read,
801 mux_chr_read,
802 mux_chr_event,
803 chr,
804 context);
6dfa8298
MAL		 805}
806
807static void mux_set_focus(MuxDriver *d, int focus)
808{
809 assert(focus >= 0);
810 assert(focus < d->mux_cnt);
811
812 if (d->focus != -1) {
813 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
814 }
815
816 d->focus = focus;
817 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
818}
819
3c0e5a4a
PB		 820static CharDriverState *qemu_chr_open_mux(const char *id,
821 ChardevBackend *backend,
822 ChardevReturn *ret, Error **errp)
6f97dba0 823{
32bafa8f 824 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 825 CharDriverState *chr, *drv;
6f97dba0 826 MuxDriver *d;
f194a1ae 827 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 828
3c0e5a4a
PB		 829 drv = qemu_chr_find(mux->chardev);
830 if (drv == NULL) {
831 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
832 return NULL;
833 }
834
d0d7708b
DB		 835 chr = qemu_chr_alloc(common, errp);
836 if (!chr) {
837 return NULL;
838 }
2d528d45 839 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 840
841 chr->opaque = d;
799f1f23 842 d->focus = -1;
1371a369 843 chr->chr_close = mux_chr_close;
6f97dba0
AL		 844 chr->chr_write = mux_chr_write;
845 chr->chr_update_read_handler = mux_chr_update_read_handler;
846 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 847 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 848 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 849 if (drv->chr_add_watch) {
850 chr->chr_add_watch = mux_chr_add_watch;
851 }
7b7ab18d
MR		 852 /* only default to opened state if we've realized the initial
853 * set of muxes
854 */
855 chr->explicit_be_open = muxes_realized ? 0 : 1;
856 chr->is_mux = 1;
5345fdb4 857 if (!qemu_chr_fe_init(&d->chr, drv, errp)) {
ecb672d1
MAL		 858 qemu_chr_free(chr);
859 return NULL;
860 }
73cdf3f2 861
6f97dba0
AL		 862 return chr;
863}
864
94a40fc5
MAL		 865CharDriverState *qemu_chr_fe_get_driver(CharBackend *be)
866{
867 return be->chr;
868}
869
870bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp)
871{
872 int tag = 0;
873
874 if (s->is_mux) {
875 tag = mux_chr_new_handler_tag(s, errp);
876 if (tag < 0) {
877 return false;
878 }
879 }
880
881 b->tag = tag;
882 b->chr = s;
883
884 return true;
885}
886
887void qemu_chr_fe_set_handlers(CharBackend *b,
888 IOCanReadHandler *fd_can_read,
889 IOReadHandler *fd_read,
890 IOEventHandler *fd_event,
891 void *opaque,
892 GMainContext *context)
893{
386f07d1
MAL		 894 CharDriverState *s;
895 int fe_open;
896
897 s = b->chr;
898 if (!s) {
94a40fc5
MAL		 899 return;
900 }
901
386f07d1
MAL		 902 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
903 fe_open = 0;
904 remove_fd_in_watch(s);
905 } else {
906 fe_open = 1;
907 }
908 s->chr_can_read = fd_can_read;
909 s->chr_read = fd_read;
910 s->chr_event = fd_event;
911 s->handler_opaque = opaque;
912 if (s->chr_update_read_handler) {
913 s->chr_update_read_handler(s, context, b->tag);
914 }
915
916 if (!s->explicit_fe_open) {
917 qemu_chr_fe_set_open(b, fe_open);
918 }
94a40fc5 919
386f07d1
MAL		 920 if (fe_open) {
921 qemu_chr_fe_take_focus(b);
922 /* We're connecting to an already opened device, so let's make sure we
923 also get the open event */
924 if (s->be_open) {
925 qemu_chr_be_generic_open(s);
926 }
927 }
928
929 if (s->is_mux) {
930 mux_chr_set_handlers(s, context);
94a40fc5
MAL		 931 }
932}
933
934void qemu_chr_fe_take_focus(CharBackend *b)
935{
936 if (b->chr->is_mux) {
937 mux_set_focus(b->chr->opaque, b->tag);
938 }
939}
6f97dba0 940
96c63847
AL		 941typedef struct IOWatchPoll
942{
d185c094
PB		 943 GSource parent;
944
9894dc0c 945 QIOChannel *ioc;
96c63847 946 GSource *src;
96c63847
AL		 947
948 IOCanReadHandler *fd_can_read;
1e885b25 949 GSourceFunc fd_read;
96c63847 950 void *opaque;
e92aa36a 951 GMainContext *context;
96c63847
AL		 952} IOWatchPoll;
953
96c63847
AL		 954static IOWatchPoll *io_watch_poll_from_source(GSource *source)
955{
d185c094 956 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 957}
958
e92aa36a
ZC		 959static gboolean io_watch_poll_prepare(GSource *source,
960 gint *timeout_)
96c63847
AL		 961{
962 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 963 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 964 bool was_active = iwp->src != NULL;
d185c094 965 if (was_active == now_active) {
96c63847
AL		 966 return FALSE;
967 }
968
d185c094 969 if (now_active) {
9894dc0c
DB		 970 iwp->src = qio_channel_create_watch(
971 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 972 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
e92aa36a 973 g_source_attach(iwp->src, iwp->context);
d185c094 974 } else {
1e885b25
PB		 975 g_source_destroy(iwp->src);
976 g_source_unref(iwp->src);
977 iwp->src = NULL;
d185c094
PB		 978 }
979 return FALSE;
96c63847
AL		 980}
981
982static gboolean io_watch_poll_check(GSource *source)
983{
d185c094 984 return FALSE;
96c63847
AL		 985}
986
987static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
988 gpointer user_data)
989{
d185c094 990 abort();
96c63847
AL		 991}
992
993static void io_watch_poll_finalize(GSource *source)
994{
2b316774
PB		 995 /* Due to a glib bug, removing the last reference to a source
996 * inside a finalize callback causes recursive locking (and a
997 * deadlock). This is not a problem inside other callbacks,
998 * including dispatch callbacks, so we call io_remove_watch_poll
999 * to remove this source. At this point, iwp->src must
1000 * be NULL, or we would leak it.
1001 *
1002 * This would be solved much more elegantly by child sources,
1003 * but we support older glib versions that do not have them.
1004 */
96c63847 1005 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 1006 assert(iwp->src == NULL);
96c63847
AL		 1007}
1008
1009static GSourceFuncs io_watch_poll_funcs = {
1010 .prepare = io_watch_poll_prepare,
1011 .check = io_watch_poll_check,
1012 .dispatch = io_watch_poll_dispatch,
1013 .finalize = io_watch_poll_finalize,
1014};
1015
1016/* Can only be used for read */
9894dc0c 1017static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 1018 IOCanReadHandler *fd_can_read,
9894dc0c 1019 QIOChannelFunc fd_read,
e92aa36a
ZC		 1020 gpointer user_data,
1021 GMainContext *context)
96c63847
AL		 1022{
1023 IOWatchPoll *iwp;
0ca5aa4f 1024 int tag;
96c63847 1025
e92aa36a
ZC		 1026 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
1027 sizeof(IOWatchPoll));
96c63847
AL		 1028 iwp->fd_can_read = fd_can_read;
1029 iwp->opaque = user_data;
9894dc0c 1030 iwp->ioc = ioc;
1e885b25
PB		 1031 iwp->fd_read = (GSourceFunc) fd_read;
1032 iwp->src = NULL;
e92aa36a 1033 iwp->context = context;
96c63847 1034
e92aa36a 1035 tag = g_source_attach(&iwp->parent, context);
0ca5aa4f
PB		 1036 g_source_unref(&iwp->parent);
1037 return tag;
96c63847
AL		 1038}
1039
2b316774
PB		 1040static void io_remove_watch_poll(guint tag)
1041{
1042 GSource *source;
1043 IOWatchPoll *iwp;
1044
1045 g_return_if_fail (tag > 0);
1046
1047 source = g_main_context_find_source_by_id(NULL, tag);
1048 g_return_if_fail (source != NULL);
1049
1050 iwp = io_watch_poll_from_source(source);
1051 if (iwp->src) {
1052 g_source_destroy(iwp->src);
1053 g_source_unref(iwp->src);
1054 iwp->src = NULL;
1055 }
1056 g_source_destroy(&iwp->parent);
1057}
1058
26da70c7
AS		 1059static void remove_fd_in_watch(CharDriverState *chr)
1060{
1061 if (chr->fd_in_tag) {
1062 io_remove_watch_poll(chr->fd_in_tag);
1063 chr->fd_in_tag = 0;
1064 }
1065}
1066
96c63847 1067
9894dc0c
DB		 1068static int io_channel_send_full(QIOChannel *ioc,
1069 const void *buf, size_t len,
1070 int *fds, size_t nfds)
76a9644b 1071{
9894dc0c 1072 size_t offset = 0;
76a9644b 1073
9894dc0c
DB		 1074 while (offset < len) {
1075 ssize_t ret = 0;
1076 struct iovec iov = { .iov_base = (char *)buf + offset,
1077 .iov_len = len - offset };
1078
1079 ret = qio_channel_writev_full(
1080 ioc, &iov, 1,
1081 fds, nfds, NULL);
1082 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 1083 if (offset) {
1084 return offset;
1085 }
76a9644b 1086
e046fb44
DB		 1087 errno = EAGAIN;
1088 return -1;
1089 } else if (ret < 0) {
9894dc0c
DB		 1090 errno = EINVAL;
1091 return -1;
1092 }
76a9644b 1093
9894dc0c
DB		 1094 offset += ret;
1095 }
76a9644b 1096
9894dc0c 1097 return offset;
76a9644b
AL		 1098}
1099
9894dc0c 1100
0ff0fad2 1101#ifndef _WIN32
9894dc0c 1102static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 1103{
9894dc0c 1104 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 1105}
96c63847 1106
44ab9ed4 1107
a29753f8
AL		 1108typedef struct FDCharDriver {
1109 CharDriverState *chr;
9894dc0c 1110 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 1111 int max_size;
1112} FDCharDriver;
1113
9005b2a7 1114/* Called with chr_write_lock held. */
6f97dba0
AL		 1115static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1116{
1117 FDCharDriver *s = chr->opaque;
a29753f8 1118
9894dc0c 1119 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1120}
1121
9894dc0c 1122static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1123{
1124 CharDriverState *chr = opaque;
1125 FDCharDriver *s = chr->opaque;
a29753f8 1126 int len;
9bd7854e 1127 uint8_t buf[READ_BUF_LEN];
9894dc0c 1128 ssize_t ret;
6f97dba0
AL		 1129
1130 len = sizeof(buf);
a29753f8 1131 if (len > s->max_size) {
6f97dba0 1132 len = s->max_size;
a29753f8
AL		 1133 }
1134 if (len == 0) {
cdbf6e16 1135 return TRUE;
a29753f8
AL		 1136 }
1137
9894dc0c
DB		 1138 ret = qio_channel_read(
1139 chan, (gchar *)buf, len, NULL);
1140 if (ret == 0) {
26da70c7 1141 remove_fd_in_watch(chr);
a425d23f 1142 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1143 return FALSE;
6f97dba0 1144 }
9894dc0c
DB		 1145 if (ret > 0) {
1146 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1147 }
a29753f8
AL		 1148
1149 return TRUE;
1150}
1151
1152static int fd_chr_read_poll(void *opaque)
1153{
1154 CharDriverState *chr = opaque;
1155 FDCharDriver *s = chr->opaque;
1156
1157 s->max_size = qemu_chr_be_can_write(chr);
1158 return s->max_size;
6f97dba0
AL		 1159}
1160
23673ca7
AL		 1161static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1162{
1163 FDCharDriver *s = chr->opaque;
9894dc0c 1164 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1165}
1166
e92aa36a 1167static void fd_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 1168 GMainContext *context,
1169 int tag)
6f97dba0
AL		 1170{
1171 FDCharDriver *s = chr->opaque;
1172
26da70c7 1173 remove_fd_in_watch(chr);
9894dc0c
DB		 1174 if (s->ioc_in) {
1175 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1176 fd_chr_read_poll,
e92aa36a
ZC		 1177 fd_chr_read, chr,
1178 context);
6f97dba0
AL		 1179 }
1180}
1181
1182static void fd_chr_close(struct CharDriverState *chr)
1183{
1184 FDCharDriver *s = chr->opaque;
1185
26da70c7 1186 remove_fd_in_watch(chr);
9894dc0c
DB		 1187 if (s->ioc_in) {
1188 object_unref(OBJECT(s->ioc_in));
a29753f8 1189 }
9894dc0c
DB		 1190 if (s->ioc_out) {
1191 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1192 }
1193
7267c094 1194 g_free(s);
a425d23f 1195 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1196}
1197
1198/* open a character device to a unix fd */
d0d7708b
DB		 1199static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1200 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1201{
1202 CharDriverState *chr;
1203 FDCharDriver *s;
1204
d0d7708b
DB		 1205 chr = qemu_chr_alloc(backend, errp);
1206 if (!chr) {
1207 return NULL;
1208 }
2d528d45 1209 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1210 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1211 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1212 qemu_set_nonblock(fd_out);
a29753f8 1213 s->chr = chr;
6f97dba0 1214 chr->opaque = s;
23673ca7 1215 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1216 chr->chr_write = fd_chr_write;
1217 chr->chr_update_read_handler = fd_chr_update_read_handler;
1218 chr->chr_close = fd_chr_close;
1219
6f97dba0
AL		 1220 return chr;
1221}
1222
20cbe7a2
PB		 1223static CharDriverState *qemu_chr_open_pipe(const char *id,
1224 ChardevBackend *backend,
1225 ChardevReturn *ret,
1226 Error **errp)
6f97dba0 1227{
32bafa8f 1228 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1229 int fd_in, fd_out;
0ff0fad2
DB		 1230 char *filename_in;
1231 char *filename_out;
548cbb36 1232 const char *filename = opts->device;
f194a1ae 1233 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1234
0ff0fad2
DB		 1235
1236 filename_in = g_strdup_printf("%s.in", filename);
1237 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1238 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1239 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1240 g_free(filename_in);
1241 g_free(filename_out);
6f97dba0
AL		 1242 if (fd_in < 0 || fd_out < 0) {
1243 if (fd_in >= 0)
1244 close(fd_in);
1245 if (fd_out >= 0)
1246 close(fd_out);
b181e047 1247 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1248 if (fd_in < 0) {
20cbe7a2 1249 error_setg_file_open(errp, errno, filename);
1f51470d 1250 return NULL;
a89dd6c3 1251 }
6f97dba0 1252 }
d0d7708b 1253 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1254}
1255
6f97dba0
AL		 1256/* init terminal so that we can grab keys */
1257static struct termios oldtty;
1258static int old_fd0_flags;
c88930a6 1259static bool stdio_in_use;
bb002513 1260static bool stdio_allow_signal;
e76d4420
GH		 1261static bool stdio_echo_state;
1262
1263static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1264
1265static void term_exit(void)
1266{
1267 tcsetattr (0, TCSANOW, &oldtty);
1268 fcntl(0, F_SETFL, old_fd0_flags);
1269}
1270
e76d4420
GH		 1271static void term_stdio_handler(int sig)
1272{
1273 /* restore echo after resume from suspend. */
1274 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1275}
1276
bb002513 1277static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1278{
1279 struct termios tty;
1280
e76d4420 1281 stdio_echo_state = echo;
0369364b 1282 tty = oldtty;
bb002513
PB		 1283 if (!echo) {
1284 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1285 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1286 tty.c_oflag |= OPOST;
1287 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1288 tty.c_cflag &= ~(CSIZE|PARENB);
1289 tty.c_cflag |= CS8;
1290 tty.c_cc[VMIN] = 1;
1291 tty.c_cc[VTIME] = 0;
1292 }
bb002513 1293 if (!stdio_allow_signal)
6f97dba0 1294 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1295
1296 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1297}
1298
1299static void qemu_chr_close_stdio(struct CharDriverState *chr)
1300{
1301 term_exit();
6f97dba0
AL		 1302 fd_chr_close(chr);
1303}
1304
8c84b25d
PB		 1305static CharDriverState *qemu_chr_open_stdio(const char *id,
1306 ChardevBackend *backend,
1307 ChardevReturn *ret,
1308 Error **errp)
6f97dba0 1309{
32bafa8f 1310 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1311 CharDriverState *chr;
e76d4420 1312 struct sigaction act;
f194a1ae 1313 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1314
ab51b1d5 1315 if (is_daemonized()) {
8c84b25d 1316 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1317 return NULL;
1318 }
c88930a6
LL		 1319
1320 if (stdio_in_use) {
8c84b25d
PB		 1321 error_setg(errp, "cannot use stdio by multiple character devices");
1322 return NULL;
c88930a6
LL		 1323 }
1324
1325 stdio_in_use = true;
ed7a1540 1326 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1327 tcgetattr(0, &oldtty);
4ff12bdb 1328 qemu_set_nonblock(0);
ed7a1540 1329 atexit(term_exit);
0369364b 1330
e76d4420
GH		 1331 memset(&act, 0, sizeof(act));
1332 act.sa_handler = term_stdio_handler;
1333 sigaction(SIGCONT, &act, NULL);
1334
d0d7708b 1335 chr = qemu_chr_open_fd(0, 1, common, errp);
71200fb9
LM		 1336 if (!chr) {
1337 return NULL;
1338 }
6f97dba0 1339 chr->chr_close = qemu_chr_close_stdio;
bb002513 1340 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1341 if (opts->has_signal) {
1342 stdio_allow_signal = opts->signal;
1343 }
5345fdb4 1344 qemu_chr_set_echo_stdio(chr, false);
6f97dba0 1345
1f51470d 1346 return chr;
6f97dba0
AL		 1347}
1348
6f97dba0 1349#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1350 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1351 || defined(__GLIBC__)
6f97dba0 1352
d809ab95
PB		 1353#define HAVE_CHARDEV_SERIAL 1
1354#define HAVE_CHARDEV_PTY 1
e551498e 1355
6f97dba0 1356typedef struct {
9894dc0c 1357 QIOChannel *ioc;
6f97dba0 1358 int read_bytes;
9005b2a7
PB		 1359
1360 /* Protected by the CharDriverState chr_write_lock. */
1361 int connected;
8aa33caf 1362 guint timer_tag;
7b3621f4 1363 guint open_tag;
6f97dba0
AL		 1364} PtyCharDriver;
1365
9005b2a7 1366static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1367static void pty_chr_state(CharDriverState *chr, int connected);
1368
8aa33caf
AL		 1369static gboolean pty_chr_timer(gpointer opaque)
1370{
1371 struct CharDriverState *chr = opaque;
1372 PtyCharDriver *s = chr->opaque;
1373
9005b2a7 1374 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1375 s->timer_tag = 0;
7b3621f4 1376 s->open_tag = 0;
b0d768c3
GH		 1377 if (!s->connected) {
1378 /* Next poll ... */
9005b2a7 1379 pty_chr_update_read_handler_locked(chr);
b0d768c3 1380 }
9005b2a7 1381 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1382 return FALSE;
1383}
1384
9005b2a7 1385/* Called with chr_write_lock held. */
8aa33caf
AL		 1386static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1387{
1388 PtyCharDriver *s = chr->opaque;
1389
1390 if (s->timer_tag) {
1391 g_source_remove(s->timer_tag);
1392 s->timer_tag = 0;
1393 }
1394
1395 if (ms == 1000) {
1396 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1397 } else {
1398 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1399 }
1400}
1401
9005b2a7
PB		 1402/* Called with chr_write_lock held. */
1403static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1404{
1405 PtyCharDriver *s = chr->opaque;
1406 GPollFD pfd;
c1f24489 1407 int rc;
9894dc0c 1408 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1409
9894dc0c 1410 pfd.fd = fioc->fd;
1bb7fe72
PB		 1411 pfd.events = G_IO_OUT;
1412 pfd.revents = 0;
c1f24489
PB		 1413 do {
1414 rc = g_poll(&pfd, 1, 0);
1415 } while (rc == -1 && errno == EINTR);
1416 assert(rc >= 0);
1417
1bb7fe72
PB		 1418 if (pfd.revents & G_IO_HUP) {
1419 pty_chr_state(chr, 0);
1420 } else {
1421 pty_chr_state(chr, 1);
1422 }
1423}
1424
e92aa36a 1425static void pty_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 1426 GMainContext *context,
1427 int tag)
9005b2a7
PB		 1428{
1429 qemu_mutex_lock(&chr->chr_write_lock);
1430 pty_chr_update_read_handler_locked(chr);
1431 qemu_mutex_unlock(&chr->chr_write_lock);
1432}
1433
1434/* Called with chr_write_lock held. */
6f97dba0
AL		 1435static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1436{
1437 PtyCharDriver *s = chr->opaque;
1438
1439 if (!s->connected) {
1440 /* guest sends data, check for (re-)connect */
9005b2a7 1441 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1442 if (!s->connected) {
1443 return 0;
1444 }
6f97dba0 1445 }
9894dc0c 1446 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1447}
1448
e6a87ed8
AL		 1449static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1450{
1451 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1452 if (!s->connected) {
1453 return NULL;
1454 }
9894dc0c 1455 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1456}
1457
6f97dba0
AL		 1458static int pty_chr_read_poll(void *opaque)
1459{
1460 CharDriverState *chr = opaque;
1461 PtyCharDriver *s = chr->opaque;
1462
909cda12 1463 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1464 return s->read_bytes;
1465}
1466
9894dc0c 1467static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1468{
1469 CharDriverState *chr = opaque;
1470 PtyCharDriver *s = chr->opaque;
9894dc0c 1471 gsize len;
9bd7854e 1472 uint8_t buf[READ_BUF_LEN];
9894dc0c 1473 ssize_t ret;
6f97dba0
AL		 1474
1475 len = sizeof(buf);
1476 if (len > s->read_bytes)
1477 len = s->read_bytes;
cdbf6e16
PB		 1478 if (len == 0) {
1479 return TRUE;
1480 }
9894dc0c
DB		 1481 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1482 if (ret <= 0) {
6f97dba0 1483 pty_chr_state(chr, 0);
093d3a20
AL		 1484 return FALSE;
1485 } else {
6f97dba0 1486 pty_chr_state(chr, 1);
9894dc0c 1487 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1488 }
093d3a20 1489 return TRUE;
6f97dba0
AL		 1490}
1491
7b3621f4
PB		 1492static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1493{
1494 CharDriverState *chr = opaque;
1495 PtyCharDriver *s = chr->opaque;
1496
1497 s->open_tag = 0;
1498 qemu_chr_be_generic_open(chr);
1499 return FALSE;
1500}
1501
9005b2a7 1502/* Called with chr_write_lock held. */
6f97dba0
AL		 1503static void pty_chr_state(CharDriverState *chr, int connected)
1504{
1505 PtyCharDriver *s = chr->opaque;
1506
1507 if (!connected) {
7b3621f4
PB		 1508 if (s->open_tag) {
1509 g_source_remove(s->open_tag);
1510 s->open_tag = 0;
1511 }
26da70c7 1512 remove_fd_in_watch(chr);
6f97dba0 1513 s->connected = 0;
6f97dba0
AL		 1514 /* (re-)connect poll interval for idle guests: once per second.
1515 * We check more frequently in case the guests sends data to
1516 * the virtual device linked to our pty. */
8aa33caf 1517 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1518 } else {
85a67692
PB		 1519 if (s->timer_tag) {
1520 g_source_remove(s->timer_tag);
1521 s->timer_tag = 0;
1522 }
1523 if (!s->connected) {
7b3621f4 1524 g_assert(s->open_tag == 0);
85a67692 1525 s->connected = 1;
7b3621f4 1526 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1527 }
1528 if (!chr->fd_in_tag) {
9894dc0c
DB		 1529 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1530 pty_chr_read_poll,
e92aa36a
ZC		 1531 pty_chr_read,
1532 chr, NULL);
85a67692 1533 }
6f97dba0
AL		 1534 }
1535}
1536
6f97dba0
AL		 1537static void pty_chr_close(struct CharDriverState *chr)
1538{
1539 PtyCharDriver *s = chr->opaque;
1540
7b3621f4
PB		 1541 qemu_mutex_lock(&chr->chr_write_lock);
1542 pty_chr_state(chr, 0);
9894dc0c 1543 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1544 if (s->timer_tag) {
1545 g_source_remove(s->timer_tag);
910b6368 1546 s->timer_tag = 0;
8aa33caf 1547 }
7b3621f4 1548 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1549 g_free(s);
a425d23f 1550 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1551}
1552
e68c5958 1553static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1554 ChardevBackend *backend,
1555 ChardevReturn *ret,
1556 Error **errp)
6f97dba0
AL		 1557{
1558 CharDriverState *chr;
1559 PtyCharDriver *s;
e68c5958 1560 int master_fd, slave_fd;
6f97dba0 1561 char pty_name[PATH_MAX];
32bafa8f 1562 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1563
4efeabbb
MT		 1564 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1565 if (master_fd < 0) {
c2e75a43 1566 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1567 return NULL;
6f97dba0
AL		 1568 }
1569
837a183f 1570 close(slave_fd);
fac6688a 1571 qemu_set_nonblock(master_fd);
6f97dba0 1572
d0d7708b
DB		 1573 chr = qemu_chr_alloc(common, errp);
1574 if (!chr) {
1575 close(master_fd);
1576 return NULL;
1577 }
a4e26048 1578
4efeabbb
MT		 1579 chr->filename = g_strdup_printf("pty:%s", pty_name);
1580 ret->pty = g_strdup(pty_name);
e68c5958 1581 ret->has_pty = true;
58650218 1582
e68c5958 1583 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1584 pty_name, id);
6f97dba0 1585
2d528d45 1586 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1587 chr->opaque = s;
1588 chr->chr_write = pty_chr_write;
1589 chr->chr_update_read_handler = pty_chr_update_read_handler;
1590 chr->chr_close = pty_chr_close;
e6a87ed8 1591 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1592 chr->explicit_be_open = true;
6f97dba0 1593
9894dc0c 1594 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1595 s->timer_tag = 0;
6f97dba0 1596
1f51470d 1597 return chr;
6f97dba0
AL		 1598}
1599
1600static void tty_serial_init(int fd, int speed,
1601 int parity, int data_bits, int stop_bits)
1602{
1603 struct termios tty;
1604 speed_t spd;
1605
1606#if 0
1607 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1608 speed, parity, data_bits, stop_bits);
1609#endif
1610 tcgetattr (fd, &tty);
1611
45eea13b
SW		 1612#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1613 speed = speed * 10 / 11;
1614 do {
1615 check_speed(50);
1616 check_speed(75);
1617 check_speed(110);
1618 check_speed(134);
1619 check_speed(150);
1620 check_speed(200);
1621 check_speed(300);
1622 check_speed(600);
1623 check_speed(1200);
1624 check_speed(1800);
1625 check_speed(2400);
1626 check_speed(4800);
1627 check_speed(9600);
1628 check_speed(19200);
1629 check_speed(38400);
1630 /* Non-Posix values follow. They may be unsupported on some systems. */
1631 check_speed(57600);
1632 check_speed(115200);
1633#ifdef B230400
1634 check_speed(230400);
1635#endif
1636#ifdef B460800
1637 check_speed(460800);
1638#endif
1639#ifdef B500000
1640 check_speed(500000);
1641#endif
1642#ifdef B576000
1643 check_speed(576000);
1644#endif
1645#ifdef B921600
1646 check_speed(921600);
1647#endif
1648#ifdef B1000000
1649 check_speed(1000000);
1650#endif
1651#ifdef B1152000
1652 check_speed(1152000);
1653#endif
1654#ifdef B1500000
1655 check_speed(1500000);
1656#endif
1657#ifdef B2000000
1658 check_speed(2000000);
1659#endif
1660#ifdef B2500000
1661 check_speed(2500000);
1662#endif
1663#ifdef B3000000
1664 check_speed(3000000);
1665#endif
1666#ifdef B3500000
1667 check_speed(3500000);
1668#endif
1669#ifdef B4000000
1670 check_speed(4000000);
1671#endif
6f97dba0 1672 spd = B115200;
45eea13b 1673 } while (0);
6f97dba0
AL		 1674
1675 cfsetispeed(&tty, spd);
1676 cfsetospeed(&tty, spd);
1677
1678 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1679 |INLCR|IGNCR|ICRNL|IXON);
1680 tty.c_oflag |= OPOST;
1681 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1682 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1683 switch(data_bits) {
1684 default:
1685 case 8:
1686 tty.c_cflag |= CS8;
1687 break;
1688 case 7:
1689 tty.c_cflag |= CS7;
1690 break;
1691 case 6:
1692 tty.c_cflag |= CS6;
1693 break;
1694 case 5:
1695 tty.c_cflag |= CS5;
1696 break;
1697 }
1698 switch(parity) {
1699 default:
1700 case 'N':
1701 break;
1702 case 'E':
1703 tty.c_cflag |= PARENB;
1704 break;
1705 case 'O':
1706 tty.c_cflag |= PARENB | PARODD;
1707 break;
1708 }
1709 if (stop_bits == 2)
1710 tty.c_cflag |= CSTOPB;
1711
1712 tcsetattr (fd, TCSANOW, &tty);
1713}
1714
1715static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1716{
1717 FDCharDriver *s = chr->opaque;
9894dc0c 1718 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1719
1720 switch(cmd) {
1721 case CHR_IOCTL_SERIAL_SET_PARAMS:
1722 {
1723 QEMUSerialSetParams *ssp = arg;
9894dc0c 1724 tty_serial_init(fioc->fd,
a29753f8 1725 ssp->speed, ssp->parity,
6f97dba0
AL		 1726 ssp->data_bits, ssp->stop_bits);
1727 }
1728 break;
1729 case CHR_IOCTL_SERIAL_SET_BREAK:
1730 {
1731 int enable = *(int *)arg;
a29753f8 1732 if (enable) {
9894dc0c 1733 tcsendbreak(fioc->fd, 1);
a29753f8 1734 }
6f97dba0
AL		 1735 }
1736 break;
1737 case CHR_IOCTL_SERIAL_GET_TIOCM:
1738 {
1739 int sarg = 0;
1740 int *targ = (int *)arg;
9894dc0c 1741 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1742 *targ = 0;
b4abdfa4 1743 if (sarg & TIOCM_CTS)
6f97dba0 1744 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1745 if (sarg & TIOCM_CAR)
6f97dba0 1746 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1747 if (sarg & TIOCM_DSR)
6f97dba0 1748 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1749 if (sarg & TIOCM_RI)
6f97dba0 1750 *targ |= CHR_TIOCM_RI;
b4abdfa4 1751 if (sarg & TIOCM_DTR)
6f97dba0 1752 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1753 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1754 *targ |= CHR_TIOCM_RTS;
1755 }
1756 break;
1757 case CHR_IOCTL_SERIAL_SET_TIOCM:
1758 {
1759 int sarg = *(int *)arg;
1760 int targ = 0;
9894dc0c 1761 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1762 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1763 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1764 if (sarg & CHR_TIOCM_CTS)
1765 targ |= TIOCM_CTS;
1766 if (sarg & CHR_TIOCM_CAR)
1767 targ |= TIOCM_CAR;
1768 if (sarg & CHR_TIOCM_DSR)
1769 targ |= TIOCM_DSR;
1770 if (sarg & CHR_TIOCM_RI)
1771 targ |= TIOCM_RI;
1772 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1773 targ |= TIOCM_DTR;
b4abdfa4 1774 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1775 targ |= TIOCM_RTS;
9894dc0c 1776 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1777 }
1778 break;
1779 default:
1780 return -ENOTSUP;
1781 }
1782 return 0;
1783}
1784
4266a134
DA		 1785static void qemu_chr_close_tty(CharDriverState *chr)
1786{
4266a134 1787 fd_chr_close(chr);
4266a134
DA		 1788}
1789
d0d7708b
DB		 1790static CharDriverState *qemu_chr_open_tty_fd(int fd,
1791 ChardevCommon *backend,
1792 Error **errp)
d59044ef
GH		 1793{
1794 CharDriverState *chr;
1795
1796 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1797 chr = qemu_chr_open_fd(fd, fd, backend, errp);
71200fb9
LM		 1798 if (!chr) {
1799 return NULL;
1800 }
d59044ef
GH		 1801 chr->chr_ioctl = tty_serial_ioctl;
1802 chr->chr_close = qemu_chr_close_tty;
1803 return chr;
1804}
6f97dba0
AL		 1805#endif /* __linux__ || __sun__ */
1806
1807#if defined(__linux__)
e551498e
GH		 1808
1809#define HAVE_CHARDEV_PARPORT 1
1810
6f97dba0
AL		 1811typedef struct {
1812 int fd;
1813 int mode;
1814} ParallelCharDriver;
1815
1816static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1817{
1818 if (s->mode != mode) {
1819 int m = mode;
1820 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1821 return 0;
1822 s->mode = mode;
1823 }
1824 return 1;
1825}
1826
1827static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1828{
1829 ParallelCharDriver *drv = chr->opaque;
1830 int fd = drv->fd;
1831 uint8_t b;
1832
1833 switch(cmd) {
1834 case CHR_IOCTL_PP_READ_DATA:
1835 if (ioctl(fd, PPRDATA, &b) < 0)
1836 return -ENOTSUP;
1837 *(uint8_t *)arg = b;
1838 break;
1839 case CHR_IOCTL_PP_WRITE_DATA:
1840 b = *(uint8_t *)arg;
1841 if (ioctl(fd, PPWDATA, &b) < 0)
1842 return -ENOTSUP;
1843 break;
1844 case CHR_IOCTL_PP_READ_CONTROL:
1845 if (ioctl(fd, PPRCONTROL, &b) < 0)
1846 return -ENOTSUP;
1847 /* Linux gives only the lowest bits, and no way to know data
1848 direction! For better compatibility set the fixed upper
1849 bits. */
1850 *(uint8_t *)arg = b | 0xc0;
1851 break;
1852 case CHR_IOCTL_PP_WRITE_CONTROL:
1853 b = *(uint8_t *)arg;
1854 if (ioctl(fd, PPWCONTROL, &b) < 0)
1855 return -ENOTSUP;
1856 break;
1857 case CHR_IOCTL_PP_READ_STATUS:
1858 if (ioctl(fd, PPRSTATUS, &b) < 0)
1859 return -ENOTSUP;
1860 *(uint8_t *)arg = b;
1861 break;
1862 case CHR_IOCTL_PP_DATA_DIR:
1863 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1864 return -ENOTSUP;
1865 break;
1866 case CHR_IOCTL_PP_EPP_READ_ADDR:
1867 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1868 struct ParallelIOArg *parg = arg;
1869 int n = read(fd, parg->buffer, parg->count);
1870 if (n != parg->count) {
1871 return -EIO;
1872 }
1873 }
1874 break;
1875 case CHR_IOCTL_PP_EPP_READ:
1876 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1877 struct ParallelIOArg *parg = arg;
1878 int n = read(fd, parg->buffer, parg->count);
1879 if (n != parg->count) {
1880 return -EIO;
1881 }
1882 }
1883 break;
1884 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1885 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1886 struct ParallelIOArg *parg = arg;
1887 int n = write(fd, parg->buffer, parg->count);
1888 if (n != parg->count) {
1889 return -EIO;
1890 }
1891 }
1892 break;
1893 case CHR_IOCTL_PP_EPP_WRITE:
1894 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1895 struct ParallelIOArg *parg = arg;
1896 int n = write(fd, parg->buffer, parg->count);
1897 if (n != parg->count) {
1898 return -EIO;
1899 }
1900 }
1901 break;
1902 default:
1903 return -ENOTSUP;
1904 }
1905 return 0;
1906}
1907
1908static void pp_close(CharDriverState *chr)
1909{
1910 ParallelCharDriver *drv = chr->opaque;
1911 int fd = drv->fd;
1912
1913 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1914 ioctl(fd, PPRELEASE);
1915 close(fd);
7267c094 1916 g_free(drv);
a425d23f 1917 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1918}
1919
d0d7708b
DB		 1920static CharDriverState *qemu_chr_open_pp_fd(int fd,
1921 ChardevCommon *backend,
1922 Error **errp)
6f97dba0
AL		 1923{
1924 CharDriverState *chr;
1925 ParallelCharDriver *drv;
6f97dba0
AL		 1926
1927 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1928 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1929 close(fd);
1f51470d 1930 return NULL;
6f97dba0
AL		 1931 }
1932
d0d7708b
DB		 1933 chr = qemu_chr_alloc(backend, errp);
1934 if (!chr) {
1935 return NULL;
1936 }
27ef9cb0
PB		 1937
1938 drv = g_new0(ParallelCharDriver, 1);
1939 chr->opaque = drv;
6f97dba0
AL		 1940 chr->chr_write = null_chr_write;
1941 chr->chr_ioctl = pp_ioctl;
1942 chr->chr_close = pp_close;
27ef9cb0
PB		 1943
1944 drv->fd = fd;
1945 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1946
1f51470d 1947 return chr;
6f97dba0
AL		 1948}
1949#endif /* __linux__ */
1950
a167ba50 1951#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1952
1953#define HAVE_CHARDEV_PARPORT 1
1954
6972f935
BS		 1955static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1956{
e0efb993 1957 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1958 uint8_t b;
1959
1960 switch(cmd) {
1961 case CHR_IOCTL_PP_READ_DATA:
1962 if (ioctl(fd, PPIGDATA, &b) < 0)
1963 return -ENOTSUP;
1964 *(uint8_t *)arg = b;
1965 break;
1966 case CHR_IOCTL_PP_WRITE_DATA:
1967 b = *(uint8_t *)arg;
1968 if (ioctl(fd, PPISDATA, &b) < 0)
1969 return -ENOTSUP;
1970 break;
1971 case CHR_IOCTL_PP_READ_CONTROL:
1972 if (ioctl(fd, PPIGCTRL, &b) < 0)
1973 return -ENOTSUP;
1974 *(uint8_t *)arg = b;
1975 break;
1976 case CHR_IOCTL_PP_WRITE_CONTROL:
1977 b = *(uint8_t *)arg;
1978 if (ioctl(fd, PPISCTRL, &b) < 0)
1979 return -ENOTSUP;
1980 break;
1981 case CHR_IOCTL_PP_READ_STATUS:
1982 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1983 return -ENOTSUP;
1984 *(uint8_t *)arg = b;
1985 break;
1986 default:
1987 return -ENOTSUP;
1988 }
1989 return 0;
1990}
1991
d0d7708b 1992static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1993 ChardevCommon *backend,
d0d7708b 1994 Error **errp)
6972f935
BS		 1995{
1996 CharDriverState *chr;
6972f935 1997
0850d49c 1998 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1999 if (!chr) {
2000 return NULL;
2001 }
e0efb993 2002 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 2003 chr->chr_write = null_chr_write;
2004 chr->chr_ioctl = pp_ioctl;
bd5c51ee 2005 chr->explicit_be_open = true;
1f51470d 2006 return chr;
6972f935
BS		 2007}
2008#endif
2009
6f97dba0
AL		 2010#else /* _WIN32 */
2011
d809ab95
PB		 2012#define HAVE_CHARDEV_SERIAL 1
2013
6f97dba0
AL		 2014typedef struct {
2015 int max_size;
2016 HANDLE hcom, hrecv, hsend;
9005b2a7 2017 OVERLAPPED orecv;
6f97dba0
AL		 2018 BOOL fpipe;
2019 DWORD len;
9005b2a7
PB		 2020
2021 /* Protected by the CharDriverState chr_write_lock. */
2022 OVERLAPPED osend;
6f97dba0
AL		 2023} WinCharState;
2024
db418a0a
FC		 2025typedef struct {
2026 HANDLE hStdIn;
2027 HANDLE hInputReadyEvent;
2028 HANDLE hInputDoneEvent;
2029 HANDLE hInputThread;
2030 uint8_t win_stdio_buf;
2031} WinStdioCharState;
2032
6f97dba0
AL		 2033#define NSENDBUF 2048
2034#define NRECVBUF 2048
2035#define MAXCONNECT 1
2036#define NTIMEOUT 5000
2037
2038static int win_chr_poll(void *opaque);
2039static int win_chr_pipe_poll(void *opaque);
2040
2041static void win_chr_close(CharDriverState *chr)
2042{
2043 WinCharState *s = chr->opaque;
2044
2045 if (s->hsend) {
2046 CloseHandle(s->hsend);
2047 s->hsend = NULL;
2048 }
2049 if (s->hrecv) {
2050 CloseHandle(s->hrecv);
2051 s->hrecv = NULL;
2052 }
2053 if (s->hcom) {
2054 CloseHandle(s->hcom);
2055 s->hcom = NULL;
2056 }
2057 if (s->fpipe)
2058 qemu_del_polling_cb(win_chr_pipe_poll, chr);
2059 else
2060 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 2061
a425d23f 2062 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2063}
2064
6511d396 2065static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 2066{
2067 WinCharState *s = chr->opaque;
2068 COMMCONFIG comcfg;
2069 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
2070 COMSTAT comstat;
2071 DWORD size;
2072 DWORD err;
2073
2074 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2075 if (!s->hsend) {
6511d396 2076 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2077 goto fail;
2078 }
2079 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2080 if (!s->hrecv) {
6511d396 2081 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2082 goto fail;
2083 }
2084
2085 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
2086 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
2087 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 2088 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 2089 s->hcom = NULL;
2090 goto fail;
2091 }
2092
2093 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 2094 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 2095 goto fail;
2096 }
2097
2098 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
2099 size = sizeof(COMMCONFIG);
2100 GetDefaultCommConfig(filename, &comcfg, &size);
2101 comcfg.dcb.DCBlength = sizeof(DCB);
2102 CommConfigDialog(filename, NULL, &comcfg);
2103
2104 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 2105 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 2106 goto fail;
2107 }
2108
2109 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 2110 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 2111 goto fail;
2112 }
2113
2114 cto.ReadIntervalTimeout = MAXDWORD;
2115 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 2116 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 2117 goto fail;
2118 }
2119
2120 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 2121 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 2122 goto fail;
2123 }
2124 qemu_add_polling_cb(win_chr_poll, chr);
2125 return 0;
2126
2127 fail:
2128 win_chr_close(chr);
2129 return -1;
2130}
2131
9005b2a7 2132/* Called with chr_write_lock held. */
6f97dba0
AL		 2133static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2134{
2135 WinCharState *s = chr->opaque;
2136 DWORD len, ret, size, err;
2137
2138 len = len1;
2139 ZeroMemory(&s->osend, sizeof(s->osend));
2140 s->osend.hEvent = s->hsend;
2141 while (len > 0) {
2142 if (s->hsend)
2143 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2144 else
2145 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2146 if (!ret) {
2147 err = GetLastError();
2148 if (err == ERROR_IO_PENDING) {
2149 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2150 if (ret) {
2151 buf += size;
2152 len -= size;
2153 } else {
2154 break;
2155 }
2156 } else {
2157 break;
2158 }
2159 } else {
2160 buf += size;
2161 len -= size;
2162 }
2163 }
2164 return len1 - len;
2165}
2166
2167static int win_chr_read_poll(CharDriverState *chr)
2168{
2169 WinCharState *s = chr->opaque;
2170
909cda12 2171 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2172 return s->max_size;
2173}
2174
2175static void win_chr_readfile(CharDriverState *chr)
2176{
2177 WinCharState *s = chr->opaque;
2178 int ret, err;
9bd7854e 2179 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2180 DWORD size;
2181
2182 ZeroMemory(&s->orecv, sizeof(s->orecv));
2183 s->orecv.hEvent = s->hrecv;
2184 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2185 if (!ret) {
2186 err = GetLastError();
2187 if (err == ERROR_IO_PENDING) {
2188 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2189 }
2190 }
2191
2192 if (size > 0) {
fa5efccb 2193 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2194 }
2195}
2196
2197static void win_chr_read(CharDriverState *chr)
2198{
2199 WinCharState *s = chr->opaque;
2200
2201 if (s->len > s->max_size)
2202 s->len = s->max_size;
2203 if (s->len == 0)
2204 return;
2205
2206 win_chr_readfile(chr);
2207}
2208
2209static int win_chr_poll(void *opaque)
2210{
2211 CharDriverState *chr = opaque;
2212 WinCharState *s = chr->opaque;
2213 COMSTAT status;
2214 DWORD comerr;
2215
2216 ClearCommError(s->hcom, &comerr, &status);
2217 if (status.cbInQue > 0) {
2218 s->len = status.cbInQue;
2219 win_chr_read_poll(chr);
2220 win_chr_read(chr);
2221 return 1;
2222 }
2223 return 0;
2224}
2225
6511d396 2226static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2227 ChardevCommon *backend,
6511d396 2228 Error **errp)
6f97dba0
AL		 2229{
2230 CharDriverState *chr;
2231 WinCharState *s;
2232
d0d7708b
DB		 2233 chr = qemu_chr_alloc(backend, errp);
2234 if (!chr) {
2235 return NULL;
2236 }
2d528d45 2237 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2238 chr->opaque = s;
2239 chr->chr_write = win_chr_write;
2240 chr->chr_close = win_chr_close;
2241
6511d396 2242 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2243 g_free(s);
d0d7708b 2244 qemu_chr_free_common(chr);
1f51470d 2245 return NULL;
6f97dba0 2246 }
1f51470d 2247 return chr;
6f97dba0
AL		 2248}
2249
2250static int win_chr_pipe_poll(void *opaque)
2251{
2252 CharDriverState *chr = opaque;
2253 WinCharState *s = chr->opaque;
2254 DWORD size;
2255
2256 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2257 if (size > 0) {
2258 s->len = size;
2259 win_chr_read_poll(chr);
2260 win_chr_read(chr);
2261 return 1;
2262 }
2263 return 0;
2264}
2265
20cbe7a2
PB		 2266static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2267 Error **errp)
6f97dba0
AL		 2268{
2269 WinCharState *s = chr->opaque;
2270 OVERLAPPED ov;
2271 int ret;
2272 DWORD size;
0ff0fad2 2273 char *openname;
6f97dba0
AL		 2274
2275 s->fpipe = TRUE;
2276
2277 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2278 if (!s->hsend) {
20cbe7a2 2279 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2280 goto fail;
2281 }
2282 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2283 if (!s->hrecv) {
20cbe7a2 2284 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2285 goto fail;
2286 }
2287
0ff0fad2 2288 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2289 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2290 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2291 PIPE_WAIT,
2292 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2293 g_free(openname);
6f97dba0 2294 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2295 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2296 s->hcom = NULL;
2297 goto fail;
2298 }
2299
2300 ZeroMemory(&ov, sizeof(ov));
2301 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2302 ret = ConnectNamedPipe(s->hcom, &ov);
2303 if (ret) {
20cbe7a2 2304 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2305 goto fail;
2306 }
2307
2308 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2309 if (!ret) {
20cbe7a2 2310 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2311 if (ov.hEvent) {
2312 CloseHandle(ov.hEvent);
2313 ov.hEvent = NULL;
2314 }
2315 goto fail;
2316 }
2317
2318 if (ov.hEvent) {
2319 CloseHandle(ov.hEvent);
2320 ov.hEvent = NULL;
2321 }
2322 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2323 return 0;
2324
2325 fail:
2326 win_chr_close(chr);
2327 return -1;
2328}
2329
2330
20cbe7a2
PB		 2331static CharDriverState *qemu_chr_open_pipe(const char *id,
2332 ChardevBackend *backend,
2333 ChardevReturn *ret,
2334 Error **errp)
6f97dba0 2335{
32bafa8f 2336 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2337 const char *filename = opts->device;
6f97dba0
AL		 2338 CharDriverState *chr;
2339 WinCharState *s;
f194a1ae 2340 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2341
d0d7708b
DB		 2342 chr = qemu_chr_alloc(common, errp);
2343 if (!chr) {
2344 return NULL;
2345 }
2d528d45 2346 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2347 chr->opaque = s;
2348 chr->chr_write = win_chr_write;
2349 chr->chr_close = win_chr_close;
2350
20cbe7a2 2351 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2352 g_free(s);
d0d7708b 2353 qemu_chr_free_common(chr);
1f51470d 2354 return NULL;
6f97dba0 2355 }
1f51470d 2356 return chr;
6f97dba0
AL		 2357}
2358
d0d7708b
DB		 2359static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2360 ChardevCommon *backend,
2361 Error **errp)
6f97dba0
AL		 2362{
2363 CharDriverState *chr;
2364 WinCharState *s;
2365
d0d7708b
DB		 2366 chr = qemu_chr_alloc(backend, errp);
2367 if (!chr) {
2368 return NULL;
2369 }
2d528d45 2370 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2371 s->hcom = fd_out;
2372 chr->opaque = s;
2373 chr->chr_write = win_chr_write;
1f51470d 2374 return chr;
6f97dba0
AL		 2375}
2376
122e5ed4
PB		 2377static CharDriverState *qemu_chr_open_win_con(const char *id,
2378 ChardevBackend *backend,
2379 ChardevReturn *ret,
2380 Error **errp)
6f97dba0 2381{
32bafa8f 2382 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2383 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2384 common, errp);
6f97dba0
AL		 2385}
2386
db418a0a
FC		 2387static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2388{
2389 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2390 DWORD dwSize;
2391 int len1;
2392
2393 len1 = len;
2394
2395 while (len1 > 0) {
2396 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2397 break;
2398 }
2399 buf += dwSize;
2400 len1 -= dwSize;
2401 }
2402
2403 return len - len1;
2404}
2405
2406static void win_stdio_wait_func(void *opaque)
2407{
2408 CharDriverState *chr = opaque;
2409 WinStdioCharState *stdio = chr->opaque;
2410 INPUT_RECORD buf[4];
2411 int ret;
2412 DWORD dwSize;
2413 int i;
2414
dff7424d 2415 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2416
2417 if (!ret) {
2418 /* Avoid error storm */
2419 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2420 return;
2421 }
2422
2423 for (i = 0; i < dwSize; i++) {
2424 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2425
2426 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2427 int j;
2428 if (kev->uChar.AsciiChar != 0) {
2429 for (j = 0; j < kev->wRepeatCount; j++) {
2430 if (qemu_chr_be_can_write(chr)) {
2431 uint8_t c = kev->uChar.AsciiChar;
2432 qemu_chr_be_write(chr, &c, 1);
2433 }
2434 }
2435 }
2436 }
2437 }
2438}
2439
2440static DWORD WINAPI win_stdio_thread(LPVOID param)
2441{
2442 CharDriverState *chr = param;
2443 WinStdioCharState *stdio = chr->opaque;
2444 int ret;
2445 DWORD dwSize;
2446
2447 while (1) {
2448
2449 /* Wait for one byte */
2450 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2451
2452 /* Exit in case of error, continue if nothing read */
2453 if (!ret) {
2454 break;
2455 }
2456 if (!dwSize) {
2457 continue;
2458 }
2459
2460 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2461 if (stdio->win_stdio_buf == '\r') {
2462 continue;
2463 }
2464
2465 /* Signal the main thread and wait until the byte was eaten */
2466 if (!SetEvent(stdio->hInputReadyEvent)) {
2467 break;
2468 }
2469 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2470 != WAIT_OBJECT_0) {
2471 break;
2472 }
2473 }
2474
2475 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2476 return 0;
2477}
2478
2479static void win_stdio_thread_wait_func(void *opaque)
2480{
2481 CharDriverState *chr = opaque;
2482 WinStdioCharState *stdio = chr->opaque;
2483
2484 if (qemu_chr_be_can_write(chr)) {
2485 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2486 }
2487
2488 SetEvent(stdio->hInputDoneEvent);
2489}
2490
2491static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2492{
2493 WinStdioCharState *stdio = chr->opaque;
2494 DWORD dwMode = 0;
2495
2496 GetConsoleMode(stdio->hStdIn, &dwMode);
2497
2498 if (echo) {
2499 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2500 } else {
2501 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2502 }
2503}
2504
2505static void win_stdio_close(CharDriverState *chr)
2506{
2507 WinStdioCharState *stdio = chr->opaque;
2508
2509 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2510 CloseHandle(stdio->hInputReadyEvent);
2511 }
2512 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2513 CloseHandle(stdio->hInputDoneEvent);
2514 }
2515 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2516 TerminateThread(stdio->hInputThread, 0);
2517 }
2518
2519 g_free(chr->opaque);
db418a0a
FC		 2520}
2521
8c84b25d
PB		 2522static CharDriverState *qemu_chr_open_stdio(const char *id,
2523 ChardevBackend *backend,
2524 ChardevReturn *ret,
2525 Error **errp)
db418a0a
FC		 2526{
2527 CharDriverState *chr;
2528 WinStdioCharState *stdio;
2529 DWORD dwMode;
2530 int is_console = 0;
32bafa8f 2531 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2532
d0d7708b
DB		 2533 chr = qemu_chr_alloc(common, errp);
2534 if (!chr) {
2535 return NULL;
2536 }
2d528d45 2537 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2538
2539 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2540 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2541 error_setg(errp, "cannot open stdio: invalid handle");
2542 return NULL;
db418a0a
FC		 2543 }
2544
2545 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2546
2547 chr->opaque = stdio;
2548 chr->chr_write = win_stdio_write;
2549 chr->chr_close = win_stdio_close;
2550
ed7a1540
AL		 2551 if (is_console) {
2552 if (qemu_add_wait_object(stdio->hStdIn,
2553 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2554 error_setg(errp, "qemu_add_wait_object: failed");
2555 goto err1;
ed7a1540
AL		 2556 }
2557 } else {
2558 DWORD dwId;
2559
2560 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2561 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2562 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2563 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2564 error_setg(errp, "cannot create event");
2565 goto err2;
ed7a1540
AL		 2566 }
2567 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2568 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2569 error_setg(errp, "qemu_add_wait_object: failed");
2570 goto err2;
2571 }
2572 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2573 chr, 0, &dwId);
2574
2575 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2576 error_setg(errp, "cannot create stdio thread");
2577 goto err3;
db418a0a
FC		 2578 }
2579 }
2580
2581 dwMode |= ENABLE_LINE_INPUT;
2582
ed7a1540 2583 if (is_console) {
db418a0a
FC		 2584 /* set the terminal in raw mode */
2585 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2586 dwMode |= ENABLE_PROCESSED_INPUT;
2587 }
2588
2589 SetConsoleMode(stdio->hStdIn, dwMode);
2590
2591 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
5345fdb4 2592 qemu_chr_set_echo_win_stdio(chr, false);
db418a0a 2593
1f51470d 2594 return chr;
8c84b25d
PB		 2595
2596err3:
2597 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2598err2:
2599 CloseHandle(stdio->hInputReadyEvent);
2600 CloseHandle(stdio->hInputDoneEvent);
2601err1:
2602 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2603 return NULL;
db418a0a 2604}
6f97dba0
AL		 2605#endif /* !_WIN32 */
2606
2607/***********************************************************/
2608/* UDP Net console */
2609
2610typedef struct {
9894dc0c 2611 QIOChannel *ioc;
9bd7854e 2612 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2613 int bufcnt;
2614 int bufptr;
2615 int max_size;
2616} NetCharDriver;
2617
9005b2a7 2618/* Called with chr_write_lock held. */
6f97dba0
AL		 2619static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2620{
2621 NetCharDriver *s = chr->opaque;
76a9644b 2622
9894dc0c
DB		 2623 return qio_channel_write(
2624 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2625}
2626
2627static int udp_chr_read_poll(void *opaque)
2628{
2629 CharDriverState *chr = opaque;
2630 NetCharDriver *s = chr->opaque;
2631
909cda12 2632 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2633
2634 /* If there were any stray characters in the queue process them
2635 * first
2636 */
2637 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2638 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2639 s->bufptr++;
909cda12 2640 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2641 }
2642 return s->max_size;
2643}
2644
9894dc0c 2645static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2646{
2647 CharDriverState *chr = opaque;
2648 NetCharDriver *s = chr->opaque;
9894dc0c 2649 ssize_t ret;
6f97dba0 2650
cdbf6e16
PB		 2651 if (s->max_size == 0) {
2652 return TRUE;
2653 }
9894dc0c
DB		 2654 ret = qio_channel_read(
2655 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2656 if (ret <= 0) {
26da70c7 2657 remove_fd_in_watch(chr);
76a9644b
AL		 2658 return FALSE;
2659 }
9894dc0c 2660 s->bufcnt = ret;
6f97dba0
AL		 2661
2662 s->bufptr = 0;
2663 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2664 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2665 s->bufptr++;
909cda12 2666 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2667 }
76a9644b
AL		 2668
2669 return TRUE;
6f97dba0
AL		 2670}
2671
e92aa36a 2672static void udp_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 2673 GMainContext *context,
2674 int tag)
6f97dba0
AL		 2675{
2676 NetCharDriver *s = chr->opaque;
2677
26da70c7 2678 remove_fd_in_watch(chr);
9894dc0c
DB		 2679 if (s->ioc) {
2680 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2681 udp_chr_read_poll,
e92aa36a
ZC		 2682 udp_chr_read, chr,
2683 context);
6f97dba0
AL		 2684 }
2685}
2686
819f56b7
AL		 2687static void udp_chr_close(CharDriverState *chr)
2688{
2689 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2690
2691 remove_fd_in_watch(chr);
9894dc0c
DB		 2692 if (s->ioc) {
2693 object_unref(OBJECT(s->ioc));
819f56b7 2694 }
7267c094 2695 g_free(s);
a425d23f 2696 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2697}
2698
9894dc0c
DB		 2699static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2700 ChardevCommon *backend,
2701 Error **errp)
6f97dba0
AL		 2702{
2703 CharDriverState *chr = NULL;
2704 NetCharDriver *s = NULL;
6f97dba0 2705
d0d7708b
DB		 2706 chr = qemu_chr_alloc(backend, errp);
2707 if (!chr) {
2708 return NULL;
2709 }
2d528d45 2710 s = g_new0(NetCharDriver, 1);
6f97dba0 2711
9894dc0c 2712 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2713 s->bufcnt = 0;
2714 s->bufptr = 0;
2715 chr->opaque = s;
2716 chr->chr_write = udp_chr_write;
2717 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2718 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2719 /* be isn't opened until we get a connection */
2720 chr->explicit_be_open = true;
1f51470d 2721 return chr;
3ecc059d 2722}
6f97dba0 2723
6f97dba0
AL		 2724/***********************************************************/
2725/* TCP Net console */
2726
2727typedef struct {
a8fb5427
DB		 2728 QIOChannel *ioc; /* Client I/O channel */
2729 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2730 QIOChannelSocket *listen_ioc;
7ba9addc 2731 guint listen_tag;
a8fb5427 2732 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2733 int connected;
2734 int max_size;
2735 int do_telnetopt;
2736 int do_nodelay;
2737 int is_unix;
c76bf6bb 2738 int *read_msgfds;
9894dc0c 2739 size_t read_msgfds_num;
d39aac7a 2740 int *write_msgfds;
9894dc0c 2741 size_t write_msgfds_num;
cfb429cb
CM		 2742
2743 SocketAddress *addr;
2744 bool is_listen;
2745 bool is_telnet;
5dd1f02b
CM		 2746
2747 guint reconnect_timer;
2748 int64_t reconnect_time;
5008e5b7 2749 bool connect_err_reported;
6f97dba0
AL		 2750} TCPCharDriver;
2751
5dd1f02b
CM		 2752static gboolean socket_reconnect_timeout(gpointer opaque);
2753
2754static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2755{
2756 TCPCharDriver *s = chr->opaque;
2757 assert(s->connected == 0);
2758 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2759 socket_reconnect_timeout, chr);
2760}
2761
5008e5b7
CM		 2762static void check_report_connect_error(CharDriverState *chr,
2763 Error *err)
2764{
2765 TCPCharDriver *s = chr->opaque;
2766
2767 if (!s->connect_err_reported) {
2768 error_report("Unable to connect character device %s: %s",
2769 chr->label, error_get_pretty(err));
2770 s->connect_err_reported = true;
2771 }
2772 qemu_chr_socket_restart_timer(chr);
2773}
2774
9894dc0c
DB		 2775static gboolean tcp_chr_accept(QIOChannel *chan,
2776 GIOCondition cond,
2777 void *opaque);
d39aac7a 2778
9005b2a7 2779/* Called with chr_write_lock held. */
6f97dba0
AL		 2780static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2781{
2782 TCPCharDriver *s = chr->opaque;
2783 if (s->connected) {
9894dc0c
DB		 2784 int ret = io_channel_send_full(s->ioc, buf, len,
2785 s->write_msgfds,
2786 s->write_msgfds_num);
2787
2788 /* free the written msgfds, no matter what */
2789 if (s->write_msgfds_num) {
2790 g_free(s->write_msgfds);
2791 s->write_msgfds = 0;
2792 s->write_msgfds_num = 0;
d39aac7a 2793 }
9894dc0c
DB		 2794
2795 return ret;
455aa1e0 2796 } else {
6db0fdce 2797 /* XXX: indicate an error ? */
455aa1e0 2798 return len;
6f97dba0
AL		 2799 }
2800}
2801
2802static int tcp_chr_read_poll(void *opaque)
2803{
2804 CharDriverState *chr = opaque;
2805 TCPCharDriver *s = chr->opaque;
2806 if (!s->connected)
2807 return 0;
909cda12 2808 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2809 return s->max_size;
2810}
2811
2812#define IAC 255
2813#define IAC_BREAK 243
2814static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2815 TCPCharDriver *s,
2816 uint8_t *buf, int *size)
2817{
2818 /* Handle any telnet client's basic IAC options to satisfy char by
2819 * char mode with no echo. All IAC options will be removed from
2820 * the buf and the do_telnetopt variable will be used to track the
2821 * state of the width of the IAC information.
2822 *
2823 * IAC commands come in sets of 3 bytes with the exception of the
2824 * "IAC BREAK" command and the double IAC.
2825 */
2826
2827 int i;
2828 int j = 0;
2829
2830 for (i = 0; i < *size; i++) {
2831 if (s->do_telnetopt > 1) {
2832 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2833 /* Double IAC means send an IAC */
2834 if (j != i)
2835 buf[j] = buf[i];
2836 j++;
2837 s->do_telnetopt = 1;
2838 } else {
2839 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2840 /* Handle IAC break commands by sending a serial break */
a425d23f 2841 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2842 s->do_telnetopt++;
2843 }
2844 s->do_telnetopt++;
2845 }
2846 if (s->do_telnetopt >= 4) {
2847 s->do_telnetopt = 1;
2848 }
2849 } else {
2850 if ((unsigned char)buf[i] == IAC) {
2851 s->do_telnetopt = 2;
2852 } else {
2853 if (j != i)
2854 buf[j] = buf[i];
2855 j++;
2856 }
2857 }
2858 }
2859 *size = j;
2860}
2861
c76bf6bb 2862static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2863{
2864 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2865 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2866
c4095726
MT		 2867 assert(num <= TCP_MAX_FDS);
2868
c76bf6bb 2869 if (to_copy) {
d2fc39b4
SH		 2870 int i;
2871
c76bf6bb
NN		 2872 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2873
d2fc39b4
SH		 2874 /* Close unused fds */
2875 for (i = to_copy; i < s->read_msgfds_num; i++) {
2876 close(s->read_msgfds[i]);
2877 }
2878
c76bf6bb
NN		 2879 g_free(s->read_msgfds);
2880 s->read_msgfds = 0;
2881 s->read_msgfds_num = 0;
2882 }
2883
2884 return to_copy;
7d174059
MM		 2885}
2886
d39aac7a
NN		 2887static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2888{
2889 TCPCharDriver *s = chr->opaque;
2890
2891 /* clear old pending fd array */
ef1e1e07 2892 g_free(s->write_msgfds);
869a58af 2893 s->write_msgfds = NULL;
5b498459 2894 s->write_msgfds_num = 0;
d39aac7a 2895
5c7eaabf
MAL		 2896 if (!s->connected ||
2897 !qio_channel_has_feature(s->ioc,
2898 QIO_CHANNEL_FEATURE_FD_PASS)) {
2899 return -1;
2900 }
2901
d39aac7a 2902 if (num) {
2d528d45 2903 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2904 memcpy(s->write_msgfds, fds, num * sizeof(int));
2905 }
2906
2907 s->write_msgfds_num = num;
2908
2909 return 0;
2910}
2911
9894dc0c 2912static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2913{
2914 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2915 struct iovec iov = { .iov_base = buf, .iov_len = len };
2916 int ret;
2917 size_t i;
2918 int *msgfds = NULL;
2919 size_t msgfds_num = 0;
2920
2921 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2922 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2923 &msgfds, &msgfds_num,
2924 NULL);
2925 } else {
2926 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2927 NULL, NULL,
2928 NULL);
2929 }
7d174059 2930
b6572b4f
MAL		 2931 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2932 errno = EAGAIN;
2933 ret = -1;
2934 } else if (ret == -1) {
2935 errno = EIO;
2936 }
2937
9894dc0c 2938 if (msgfds_num) {
c76bf6bb
NN		 2939 /* close and clean read_msgfds */
2940 for (i = 0; i < s->read_msgfds_num; i++) {
2941 close(s->read_msgfds[i]);
2942 }
9b938c72 2943
c76bf6bb
NN		 2944 if (s->read_msgfds_num) {
2945 g_free(s->read_msgfds);
2946 }
2947
9894dc0c
DB		 2948 s->read_msgfds = msgfds;
2949 s->read_msgfds_num = msgfds_num;
7d174059 2950 }
7d174059 2951
9894dc0c
DB		 2952 for (i = 0; i < s->read_msgfds_num; i++) {
2953 int fd = s->read_msgfds[i];
2954 if (fd < 0) {
2955 continue;
2956 }
9977c894 2957
9894dc0c
DB		 2958 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2959 qemu_set_block(fd);
7d174059 2960
9894dc0c
DB		 2961#ifndef MSG_CMSG_CLOEXEC
2962 qemu_set_cloexec(fd);
06138651 2963#endif
06138651 2964 }
9977c894 2965
7d174059 2966 return ret;
9977c894 2967}
9977c894 2968
d3cc5bc4
AS		 2969static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2970{
2971 TCPCharDriver *s = chr->opaque;
9894dc0c 2972 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2973}
2974
5b498459 2975static void tcp_chr_free_connection(CharDriverState *chr)
7b0bfdf5
NN		 2976{
2977 TCPCharDriver *s = chr->opaque;
5b498459 2978 int i;
7b0bfdf5 2979
342f7a9d
MAL		 2980 if (!s->connected) {
2981 return;
2982 }
2983
5b498459
MAL		 2984 if (s->read_msgfds_num) {
2985 for (i = 0; i < s->read_msgfds_num; i++) {
2986 close(s->read_msgfds[i]);
2987 }
2988 g_free(s->read_msgfds);
2989 s->read_msgfds = NULL;
2990 s->read_msgfds_num = 0;
7b0bfdf5 2991 }
5b498459 2992
6167ebbd 2993 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2994 remove_fd_in_watch(chr);
a8fb5427
DB		 2995 object_unref(OBJECT(s->sioc));
2996 s->sioc = NULL;
9894dc0c
DB		 2997 object_unref(OBJECT(s->ioc));
2998 s->ioc = NULL;
0ff0fad2 2999 g_free(chr->filename);
5b498459
MAL		 3000 chr->filename = NULL;
3001 s->connected = 0;
3002}
3003
3004static void tcp_chr_disconnect(CharDriverState *chr)
3005{
3006 TCPCharDriver *s = chr->opaque;
3007
3008 if (!s->connected) {
3009 return;
3010 }
3011
3012 tcp_chr_free_connection(chr);
3013
3014 if (s->listen_ioc) {
3015 s->listen_tag = qio_channel_add_watch(
3016 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
3017 }
0ff0fad2
DB		 3018 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
3019 s->is_listen, s->is_telnet);
7b0bfdf5 3020 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 3021 if (s->reconnect_time) {
3022 qemu_chr_socket_restart_timer(chr);
3023 }
7b0bfdf5
NN		 3024}
3025
9894dc0c 3026static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 3027{
3028 CharDriverState *chr = opaque;
3029 TCPCharDriver *s = chr->opaque;
9bd7854e 3030 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 3031 int len, size;
3032
2ea5a7af 3033 if (!s->connected || s->max_size <= 0) {
cdbf6e16 3034 return TRUE;
2ea5a7af 3035 }
6f97dba0
AL		 3036 len = sizeof(buf);
3037 if (len > s->max_size)
3038 len = s->max_size;
9977c894 3039 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 3040 if (size == 0 || size == -1) {
6f97dba0 3041 /* connection closed */
7b0bfdf5 3042 tcp_chr_disconnect(chr);
6f97dba0
AL		 3043 } else if (size > 0) {
3044 if (s->do_telnetopt)
3045 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
3046 if (size > 0)
fa5efccb 3047 qemu_chr_be_write(chr, buf, size);
6f97dba0 3048 }
2ea5a7af
AL		 3049
3050 return TRUE;
6f97dba0
AL		 3051}
3052
7b0bfdf5
NN		 3053static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
3054{
3055 TCPCharDriver *s = chr->opaque;
3056 int size;
3057
3058 if (!s->connected) {
3059 return 0;
3060 }
3061
3062 size = tcp_chr_recv(chr, (void *) buf, len);
3063 if (size == 0) {
3064 /* connection closed */
3065 tcp_chr_disconnect(chr);
3066 }
3067
3068 return size;
3069}
3070
6f97dba0
AL		 3071static void tcp_chr_connect(void *opaque)
3072{
3073 CharDriverState *chr = opaque;
3074 TCPCharDriver *s = chr->opaque;
16cc4ffe 3075
0ff0fad2 3076 g_free(chr->filename);
a8fb5427
DB		 3077 chr->filename = sockaddr_to_str(
3078 &s->sioc->localAddr, s->sioc->localAddrLen,
3079 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
3080 s->is_listen, s->is_telnet);
6f97dba0
AL		 3081
3082 s->connected = 1;
9894dc0c
DB		 3083 if (s->ioc) {
3084 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3085 tcp_chr_read_poll,
e92aa36a
ZC		 3086 tcp_chr_read,
3087 chr, NULL);
bbdd2ad0 3088 }
fee204fd 3089 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 3090}
3091
e92aa36a 3092static void tcp_chr_update_read_handler(CharDriverState *chr,
6dfa8298
MAL		 3093 GMainContext *context,
3094 int tag)
ac1b84dd
GH		 3095{
3096 TCPCharDriver *s = chr->opaque;
3097
1e94f23d
DB		 3098 if (!s->connected) {
3099 return;
3100 }
3101
ac1b84dd 3102 remove_fd_in_watch(chr);
9894dc0c
DB		 3103 if (s->ioc) {
3104 chr->fd_in_tag = io_add_watch_poll(s->ioc,
3105 tcp_chr_read_poll,
e92aa36a
ZC		 3106 tcp_chr_read, chr,
3107 context);
ac1b84dd
GH		 3108 }
3109}
3110
f2001a7e
DB		 3111typedef struct {
3112 CharDriverState *chr;
3113 char buf[12];
3114 size_t buflen;
3115} TCPCharDriverTelnetInit;
3116
3117static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
3118 GIOCondition cond G_GNUC_UNUSED,
3119 gpointer user_data)
6f97dba0 3120{
f2001a7e
DB		 3121 TCPCharDriverTelnetInit *init = user_data;
3122 ssize_t ret;
3123
3124 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
3125 if (ret < 0) {
3126 if (ret == QIO_CHANNEL_ERR_BLOCK) {
3127 ret = 0;
3128 } else {
3129 tcp_chr_disconnect(init->chr);
3130 return FALSE;
3131 }
3132 }
3133 init->buflen -= ret;
3134
3135 if (init->buflen == 0) {
3136 tcp_chr_connect(init->chr);
3137 return FALSE;
3138 }
3139
3140 memmove(init->buf, init->buf + ret, init->buflen);
3141
3142 return TRUE;
3143}
3144
3145static void tcp_chr_telnet_init(CharDriverState *chr)
3146{
3147 TCPCharDriver *s = chr->opaque;
3148 TCPCharDriverTelnetInit *init =
3149 g_new0(TCPCharDriverTelnetInit, 1);
3150 size_t n = 0;
3151
3152 init->chr = chr;
3153 init->buflen = 12;
3154
3155#define IACSET(x, a, b, c) \
3156 do { \
3157 x[n++] = a; \
3158 x[n++] = b; \
3159 x[n++] = c; \
3160 } while (0)
3161
3162 /* Prep the telnet negotion to put telnet in binary,
3163 * no echo, single char mode */
3164 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3165 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3166 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3167 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3168
3169#undef IACSET
3170
3171 qio_channel_add_watch(
3172 s->ioc, G_IO_OUT,
3173 tcp_chr_telnet_init_io,
3174 init, NULL);
6f97dba0
AL		 3175}
3176
a8fb5427
DB		 3177
3178static void tcp_chr_tls_handshake(Object *source,
3179 Error *err,
3180 gpointer user_data)
3181{
3182 CharDriverState *chr = user_data;
3183 TCPCharDriver *s = chr->opaque;
3184
3185 if (err) {
3186 tcp_chr_disconnect(chr);
3187 } else {
3188 if (s->do_telnetopt) {
3189 tcp_chr_telnet_init(chr);
3190 } else {
3191 tcp_chr_connect(chr);
3192 }
3193 }
3194}
3195
3196
3197static void tcp_chr_tls_init(CharDriverState *chr)
3198{
3199 TCPCharDriver *s = chr->opaque;
3200 QIOChannelTLS *tioc;
3201 Error *err = NULL;
3202
3203 if (s->is_listen) {
3204 tioc = qio_channel_tls_new_server(
3205 s->ioc, s->tls_creds,
3206 NULL, /* XXX Use an ACL */
3207 &err);
3208 } else {
3209 tioc = qio_channel_tls_new_client(
3210 s->ioc, s->tls_creds,
32bafa8f 3211 s->addr->u.inet.data->host,
a8fb5427
DB		 3212 &err);
3213 }
3214 if (tioc == NULL) {
3215 error_free(err);
3216 tcp_chr_disconnect(chr);
660a2d83 3217 return;
a8fb5427
DB		 3218 }
3219 object_unref(OBJECT(s->ioc));
3220 s->ioc = QIO_CHANNEL(tioc);
3221
3222 qio_channel_tls_handshake(tioc,
3223 tcp_chr_tls_handshake,
3224 chr,
3225 NULL);
3226}
3227
3228
9894dc0c 3229static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3230{
3231 TCPCharDriver *s = chr->opaque;
9894dc0c 3232 if (s->ioc != NULL) {
13661089 3233 return -1;
9894dc0c 3234 }
13661089 3235
9894dc0c
DB		 3236 s->ioc = QIO_CHANNEL(sioc);
3237 object_ref(OBJECT(sioc));
a8fb5427
DB		 3238 s->sioc = sioc;
3239 object_ref(OBJECT(sioc));
9894dc0c 3240
64c800f8
DB		 3241 qio_channel_set_blocking(s->ioc, false, NULL);
3242
9894dc0c
DB		 3243 if (s->do_nodelay) {
3244 qio_channel_set_delay(s->ioc, false);
3245 }
910b6368
PB		 3246 if (s->listen_tag) {
3247 g_source_remove(s->listen_tag);
3248 s->listen_tag = 0;
3249 }
f2001a7e 3250
a8fb5427
DB		 3251 if (s->tls_creds) {
3252 tcp_chr_tls_init(chr);
f2001a7e 3253 } else {
a8fb5427
DB		 3254 if (s->do_telnetopt) {
3255 tcp_chr_telnet_init(chr);
3256 } else {
3257 tcp_chr_connect(chr);
3258 }
f2001a7e 3259 }
13661089
DB		 3260
3261 return 0;
3262}
3263
9894dc0c
DB		 3264
3265static int tcp_chr_add_client(CharDriverState *chr, int fd)
3266{
3267 int ret;
3268 QIOChannelSocket *sioc;
3269
3270 sioc = qio_channel_socket_new_fd(fd, NULL);
3271 if (!sioc) {
3272 return -1;
3273 }
9894dc0c
DB		 3274 ret = tcp_chr_new_client(chr, sioc);
3275 object_unref(OBJECT(sioc));
3276 return ret;
3277}
3278
3279static gboolean tcp_chr_accept(QIOChannel *channel,
3280 GIOCondition cond,
3281 void *opaque)
6f97dba0
AL		 3282{
3283 CharDriverState *chr = opaque;
9894dc0c 3284 QIOChannelSocket *sioc;
6f97dba0 3285
9894dc0c
DB		 3286 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3287 NULL);
3288 if (!sioc) {
3289 return TRUE;
6f97dba0 3290 }
9894dc0c 3291
9894dc0c
DB		 3292 tcp_chr_new_client(chr, sioc);
3293
3294 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3295
3296 return TRUE;
6f97dba0
AL		 3297}
3298
d7a04fd7
MAL		 3299static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
3300{
3301 TCPCharDriver *s = chr->opaque;
3302 QIOChannelSocket *sioc;
3303
1dc8a669
MAL		 3304 /* It can't wait on s->connected, since it is set asynchronously
3305 * in TLS and telnet cases, only wait for an accepted socket */
3306 while (!s->ioc) {
d7a04fd7
MAL		 3307 if (s->is_listen) {
3308 fprintf(stderr, "QEMU waiting for connection on: %s\n",
3309 chr->filename);
3310 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
3311 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
3312 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
3313 } else {
3314 sioc = qio_channel_socket_new();
3315 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3316 object_unref(OBJECT(sioc));
3317 return -1;
3318 }
3319 tcp_chr_new_client(chr, sioc);
3320 object_unref(OBJECT(sioc));
3321 }
3322 }
3323
3324 return 0;
3325}
3326
5345fdb4 3327static int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
6b6723c3
MAL		 3328{
3329 if (chr->chr_wait_connected) {
3330 return chr->chr_wait_connected(chr, errp);
3331 }
3332
3333 return 0;
3334}
3335
5345fdb4
MAL		 3336int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp)
3337{
3338 return qemu_chr_wait_connected(be->chr, errp);
3339}
3340
6f97dba0
AL		 3341static void tcp_chr_close(CharDriverState *chr)
3342{
3343 TCPCharDriver *s = chr->opaque;
5b498459
MAL		 3344
3345 tcp_chr_free_connection(chr);
cfb429cb 3346
5dd1f02b
CM		 3347 if (s->reconnect_timer) {
3348 g_source_remove(s->reconnect_timer);
3349 s->reconnect_timer = 0;
3350 }
cfb429cb 3351 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3352 if (s->listen_tag) {
3353 g_source_remove(s->listen_tag);
3354 s->listen_tag = 0;
3355 }
3356 if (s->listen_ioc) {
3357 object_unref(OBJECT(s->listen_ioc));
819f56b7 3358 }
a8fb5427
DB		 3359 if (s->tls_creds) {
3360 object_unref(OBJECT(s->tls_creds));
3361 }
7267c094 3362 g_free(s);
a425d23f 3363 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3364}
3365
43ded1a0 3366
9894dc0c 3367static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3368{
9894dc0c 3369 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3370 CharDriverState *chr = opaque;
5008e5b7 3371 TCPCharDriver *s = chr->opaque;
5dd1f02b 3372
9894dc0c 3373 if (err) {
5008e5b7 3374 check_report_connect_error(chr, err);
9894dc0c 3375 object_unref(src);
5dd1f02b
CM		 3376 return;
3377 }
3378
5008e5b7 3379 s->connect_err_reported = false;
f50dfe45
DB		 3380 tcp_chr_new_client(chr, sioc);
3381 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3382}
3383
f6bd5d6e 3384
51767e7c 3385/*********************************************************/
3949e594 3386/* Ring buffer chardev */
51767e7c
LL		 3387
3388typedef struct {
3389 size_t size;
3390 size_t prod;
3391 size_t cons;
3392 uint8_t *cbuf;
3949e594 3393} RingBufCharDriver;
51767e7c 3394
3949e594 3395static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3396{
3949e594 3397 const RingBufCharDriver *d = chr->opaque;
51767e7c 3398
5c230105 3399 return d->prod - d->cons;
51767e7c
LL		 3400}
3401
9005b2a7 3402/* Called with chr_write_lock held. */
3949e594 3403static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3404{
3949e594 3405 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3406 int i;
3407
3408 if (!buf || (len < 0)) {
3409 return -1;
3410 }
3411
3412 for (i = 0; i < len; i++ ) {
5c230105
MA		 3413 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3414 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3415 d->cons = d->prod - d->size;
3416 }
3417 }
3418
5c936a83 3419 return len;
51767e7c
LL		 3420}
3421
3949e594 3422static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3423{
3949e594 3424 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3425 int i;
3426
9005b2a7 3427 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3428 for (i = 0; i < len && d->cons != d->prod; i++) {
3429 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3430 }
9005b2a7 3431 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3432
3433 return i;
3434}
3435
3949e594 3436static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3437{
3949e594 3438 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3439
3440 g_free(d->cbuf);
3441 g_free(d);
3442 chr->opaque = NULL;
3443}
3444
479f09a1
PB		 3445static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3446 ChardevBackend *backend,
3447 ChardevReturn *ret,
4f57378f 3448 Error **errp)
51767e7c 3449{
32bafa8f 3450 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3451 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3452 CharDriverState *chr;
3949e594 3453 RingBufCharDriver *d;
51767e7c 3454
d0d7708b
DB		 3455 chr = qemu_chr_alloc(common, errp);
3456 if (!chr) {
3457 return NULL;
3458 }
51767e7c
LL		 3459 d = g_malloc(sizeof(*d));
3460
1da48c65 3461 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3462
3463 /* The size must be power of 2 */
3464 if (d->size & (d->size - 1)) {
4f57378f 3465 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3466 goto fail;
3467 }
3468
3469 d->prod = 0;
3470 d->cons = 0;
3471 d->cbuf = g_malloc0(d->size);
3472
3473 chr->opaque = d;
3949e594
MA		 3474 chr->chr_write = ringbuf_chr_write;
3475 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3476
3477 return chr;
3478
3479fail:
3480 g_free(d);
d0d7708b 3481 qemu_chr_free_common(chr);
51767e7c
LL		 3482 return NULL;
3483}
3484
8e597779 3485bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3486{
3949e594 3487 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3488}
3489
3949e594 3490void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3491 bool has_format, enum DataFormat format,
1f590cf9
LL		 3492 Error **errp)
3493{
3494 CharDriverState *chr;
c4f331b6 3495 const uint8_t *write_data;
1f590cf9 3496 int ret;
3d1bba20 3497 gsize write_count;
1f590cf9
LL		 3498
3499 chr = qemu_chr_find(device);
3500 if (!chr) {
1a69278e 3501 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3502 return;
3503 }
3504
3949e594
MA		 3505 if (!chr_is_ringbuf(chr)) {
3506 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3507 return;
3508 }
3509
1f590cf9 3510 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3511 write_data = qbase64_decode(data, -1,
3512 &write_count,
3513 errp);
3514 if (!write_data) {
3515 return;
3516 }
1f590cf9
LL		 3517 } else {
3518 write_data = (uint8_t *)data;
82e59a67 3519 write_count = strlen(data);
1f590cf9
LL		 3520 }
3521
3949e594 3522 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3523
13289fb5
MA		 3524 if (write_data != (uint8_t *)data) {
3525 g_free((void *)write_data);
3526 }
3527
1f590cf9
LL		 3528 if (ret < 0) {
3529 error_setg(errp, "Failed to write to device %s", device);
3530 return;
3531 }
3532}
3533
3949e594 3534char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3535 bool has_format, enum DataFormat format,
3536 Error **errp)
49b6d722
LL		 3537{
3538 CharDriverState *chr;
c4f331b6 3539 uint8_t *read_data;
49b6d722 3540 size_t count;
3ab651fc 3541 char *data;
49b6d722
LL		 3542
3543 chr = qemu_chr_find(device);
3544 if (!chr) {
1a69278e 3545 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3546 return NULL;
3547 }
3548
3949e594
MA		 3549 if (!chr_is_ringbuf(chr)) {
3550 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3551 return NULL;
3552 }
3553
3554 if (size <= 0) {
3555 error_setg(errp, "size must be greater than zero");
3556 return NULL;
3557 }
3558
3949e594 3559 count = ringbuf_count(chr);
49b6d722 3560 size = size > count ? count : size;
44f3bcd2 3561 read_data = g_malloc(size + 1);
49b6d722 3562
3949e594 3563 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3564
3565 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3566 data = g_base64_encode(read_data, size);
13289fb5 3567 g_free(read_data);
49b6d722 3568 } else {
3949e594
MA		 3569 /*
3570 * FIXME should read only complete, valid UTF-8 characters up
3571 * to @size bytes. Invalid sequences should be replaced by a
3572 * suitable replacement character. Except when (and only
3573 * when) ring buffer lost characters since last read, initial
3574 * continuation characters should be dropped.
3575 */
44f3bcd2 3576 read_data[size] = 0;
3ab651fc 3577 data = (char *)read_data;
49b6d722
LL		 3578 }
3579
3ab651fc 3580 return data;
49b6d722
LL		 3581}
3582
33521634 3583QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3584{
6ea314d9 3585 char host[65], port[33], width[8], height[8];
aeb2c47a 3586 int pos;
7d31544f 3587 const char *p;
191bc01b 3588 QemuOpts *opts;
8be7e7e4 3589 Error *local_err = NULL;
191bc01b 3590
8be7e7e4 3591 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3592 if (local_err) {
33394884 3593 error_report_err(local_err);
191bc01b 3594 return NULL;
8be7e7e4 3595 }
191bc01b 3596
7591c5c1
GH		 3597 if (strstart(filename, "mon:", &p)) {
3598 filename = p;
f43e47db 3599 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3600 if (strcmp(filename, "stdio") == 0) {
3601 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3602 * but pass it to the guest. Handle this only for compat syntax,
3603 * for -chardev syntax we have special option for this.
3604 * This is what -nographic did, redirecting+muxing serial+monitor
3605 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3606 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3607 }
7591c5c1
GH		 3608 }
3609
f0457e8d
GH		 3610 if (strcmp(filename, "null") == 0 ||
3611 strcmp(filename, "pty") == 0 ||
3612 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3613 strcmp(filename, "braille") == 0 ||
5692399f 3614 strcmp(filename, "testdev") == 0 ||
f0457e8d 3615 strcmp(filename, "stdio") == 0) {
f43e47db 3616 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3617 return opts;
3618 }
6ea314d9 3619 if (strstart(filename, "vc", &p)) {
f43e47db 3620 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3621 if (*p == ':') {
49aa4058 3622 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3623 /* pixels */
f43e47db
MA		 3624 qemu_opt_set(opts, "width", width, &error_abort);
3625 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3626 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3627 /* chars */
f43e47db
MA		 3628 qemu_opt_set(opts, "cols", width, &error_abort);
3629 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3630 } else {
3631 goto fail;
3632 }
3633 }
3634 return opts;
3635 }
d6c983cd 3636 if (strcmp(filename, "con:") == 0) {
f43e47db 3637 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3638 return opts;
3639 }
48b76496 3640 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3641 qemu_opt_set(opts, "backend", "serial", &error_abort);
3642 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3643 return opts;
3644 }
7d31544f 3645 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3646 qemu_opt_set(opts, "backend", "file", &error_abort);
3647 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3648 return opts;
3649 }
3650 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3651 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3652 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3653 return opts;
3654 }
aeb2c47a
GH		 3655 if (strstart(filename, "tcp:", &p) ||
3656 strstart(filename, "telnet:", &p)) {
3657 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3658 host[0] = 0;
3659 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3660 goto fail;
3661 }
f43e47db
MA		 3662 qemu_opt_set(opts, "backend", "socket", &error_abort);
3663 qemu_opt_set(opts, "host", host, &error_abort);
3664 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3665 if (p[pos] == ',') {
dc523cd3
MA		 3666 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3667 if (local_err) {
3668 error_report_err(local_err);
aeb2c47a 3669 goto fail;
dc523cd3 3670 }
aeb2c47a
GH		 3671 }
3672 if (strstart(filename, "telnet:", &p))
f43e47db 3673 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3674 return opts;
3675 }
7e1b35b4 3676 if (strstart(filename, "udp:", &p)) {
f43e47db 3677 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3678 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3679 host[0] = 0;
39324ca4 3680 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3681 goto fail;
3682 }
3683 }
f43e47db
MA		 3684 qemu_opt_set(opts, "host", host, &error_abort);
3685 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3686 if (p[pos] == '@') {
3687 p += pos + 1;
3688 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3689 host[0] = 0;
3690 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3691 goto fail;
3692 }
3693 }
f43e47db
MA		 3694 qemu_opt_set(opts, "localaddr", host, &error_abort);
3695 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3696 }
3697 return opts;
3698 }
aeb2c47a 3699 if (strstart(filename, "unix:", &p)) {
f43e47db 3700 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3701 qemu_opts_do_parse(opts, p, "path", &local_err);
3702 if (local_err) {
3703 error_report_err(local_err);
aeb2c47a 3704 goto fail;
dc523cd3 3705 }
aeb2c47a
GH		 3706 return opts;
3707 }
48b76496
GH		 3708 if (strstart(filename, "/dev/parport", NULL) ||
3709 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3710 qemu_opt_set(opts, "backend", "parport", &error_abort);
3711 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3712 return opts;
3713 }
3714 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3715 qemu_opt_set(opts, "backend", "tty", &error_abort);
3716 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3717 return opts;
3718 }
191bc01b 3719
aeb2c47a 3720fail:
191bc01b
GH		 3721 qemu_opts_del(opts);
3722 return NULL;
3723}
3724
21a933ea 3725void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3726{
3727 const char *logfile = qemu_opt_get(opts, "logfile");
3728
3729 backend->has_logfile = logfile != NULL;
3730 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3731
3732 backend->has_logappend = true;
3733 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3734}
3735
3736
846e2e49
GH		 3737static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3738 Error **errp)
3739{
3740 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3741 ChardevFile *file;
846e2e49
GH		 3742
3743 if (path == NULL) {
3744 error_setg(errp, "chardev: file: no filename given");
3745 return;
3746 }
32bafa8f 3747 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3748 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3749 file->out = g_strdup(path);
31e38a22 3750
f194a1ae
EB		 3751 file->has_append = true;
3752 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3753}
3754
7c358031
GH		 3755static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3756 Error **errp)
3757{
f194a1ae
EB		 3758 ChardevStdio *stdio;
3759
32bafa8f 3760 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3761 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3762 stdio->has_signal = true;
3763 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3764}
3765
6511d396 3766#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3767static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3768 Error **errp)
3769{
3770 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3771 ChardevHostdev *serial;
0f1cb51d
GH		 3772
3773 if (device == NULL) {
3774 error_setg(errp, "chardev: serial/tty: no device path given");
3775 return;
3776 }
32bafa8f 3777 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3778 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3779 serial->device = g_strdup(device);
0f1cb51d 3780}
6511d396 3781#endif
0f1cb51d 3782
38bfb1a6 3783#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3784static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3785 Error **errp)
3786{
3787 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3788 ChardevHostdev *parallel;
dc375097
GH		 3789
3790 if (device == NULL) {
3791 error_setg(errp, "chardev: parallel: no device path given");
3792 return;
3793 }
32bafa8f 3794 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3795 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3796 parallel->device = g_strdup(device);
dc375097 3797}
38bfb1a6 3798#endif
dc375097 3799
548cbb36
GH		 3800static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3801 Error **errp)
3802{
3803 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3804 ChardevHostdev *dev;
548cbb36
GH		 3805
3806 if (device == NULL) {
3807 error_setg(errp, "chardev: pipe: no device path given");
3808 return;
3809 }
32bafa8f 3810 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3811 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3812 dev->device = g_strdup(device);
548cbb36
GH		 3813}
3814
4f57378f
MA		 3815static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3816 Error **errp)
1da48c65
GH		 3817{
3818 int val;
f194a1ae 3819 ChardevRingbuf *ringbuf;
1da48c65 3820
32bafa8f 3821 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3822 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3823
0f953051 3824 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3825 if (val != 0) {
f194a1ae
EB		 3826 ringbuf->has_size = true;
3827 ringbuf->size = val;
1da48c65
GH		 3828 }
3829}
3830
bb6fb7c0
GH		 3831static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3832 Error **errp)
3833{
3834 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3835 ChardevMux *mux;
bb6fb7c0
GH		 3836
3837 if (chardev == NULL) {
3838 error_setg(errp, "chardev: mux: no chardev given");
3839 return;
3840 }
32bafa8f 3841 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3842 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3843 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3844}
3845
dafd325d
PM		 3846static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3847 Error **errp)
3848{
3849 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3850 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3851 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3852 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3853 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3854 const char *path = qemu_opt_get(opts, "path");
3855 const char *host = qemu_opt_get(opts, "host");
3856 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3857 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3858 SocketAddress *addr;
f194a1ae 3859 ChardevSocket *sock;
dafd325d
PM		 3860
3861 if (!path) {
3862 if (!host) {
3863 error_setg(errp, "chardev: socket: no host given");
3864 return;
3865 }
3866 if (!port) {
3867 error_setg(errp, "chardev: socket: no port given");
3868 return;
3869 }
a8fb5427
DB		 3870 } else {
3871 if (tls_creds) {
3872 error_setg(errp, "TLS can only be used over TCP socket");
3873 return;
3874 }
dafd325d
PM		 3875 }
3876
32bafa8f 3877 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3878 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3879
f194a1ae
EB		 3880 sock->has_nodelay = true;
3881 sock->nodelay = do_nodelay;
3882 sock->has_server = true;
3883 sock->server = is_listen;
3884 sock->has_telnet = true;
3885 sock->telnet = is_telnet;
3886 sock->has_wait = true;
3887 sock->wait = is_waitconnect;
3888 sock->has_reconnect = true;
3889 sock->reconnect = reconnect;
3890 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3891
3892 addr = g_new0(SocketAddress, 1);
3893 if (path) {
0399293e 3894 UnixSocketAddress *q_unix;
130257dc 3895 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3896 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3897 q_unix->path = g_strdup(path);
dafd325d 3898 } else {
130257dc 3899 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3900 addr->u.inet.data = g_new(InetSocketAddress, 1);
3901 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3902 .host = g_strdup(host),
3903 .port = g_strdup(port),
3904 .has_to = qemu_opt_get(opts, "to"),
3905 .to = qemu_opt_get_number(opts, "to", 0),
3906 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3907 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3908 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3909 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3910 };
dafd325d 3911 }
f194a1ae 3912 sock->addr = addr;
dafd325d
PM		 3913}
3914
90a14bfe
PM		 3915static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3916 Error **errp)
3917{
3918 const char *host = qemu_opt_get(opts, "host");
3919 const char *port = qemu_opt_get(opts, "port");
3920 const char *localaddr = qemu_opt_get(opts, "localaddr");
3921 const char *localport = qemu_opt_get(opts, "localport");
3922 bool has_local = false;
3923 SocketAddress *addr;
f194a1ae 3924 ChardevUdp *udp;
90a14bfe
PM		 3925
3926 if (host == NULL || strlen(host) == 0) {
3927 host = "localhost";
3928 }
3929 if (port == NULL || strlen(port) == 0) {
3930 error_setg(errp, "chardev: udp: remote port not specified");
3931 return;
3932 }
3933 if (localport == NULL || strlen(localport) == 0) {
3934 localport = "0";
3935 } else {
3936 has_local = true;
3937 }
3938 if (localaddr == NULL || strlen(localaddr) == 0) {
3939 localaddr = "";
3940 } else {
3941 has_local = true;
3942 }
3943
32bafa8f 3944 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 3945 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3946
3947 addr = g_new0(SocketAddress, 1);
130257dc 3948 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3949 addr->u.inet.data = g_new(InetSocketAddress, 1);
3950 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3951 .host = g_strdup(host),
3952 .port = g_strdup(port),
3953 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3954 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3955 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3956 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3957 };
f194a1ae 3958 udp->remote = addr;
90a14bfe
PM		 3959
3960 if (has_local) {
f194a1ae 3961 udp->has_local = true;
90a14bfe 3962 addr = g_new0(SocketAddress, 1);
130257dc 3963 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3964 addr->u.inet.data = g_new(InetSocketAddress, 1);
3965 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3966 .host = g_strdup(localaddr),
3967 .port = g_strdup(localport),
3968 };
f194a1ae 3969 udp->local = addr;
90a14bfe
PM		 3970 }
3971}
3972
d654f34e 3973typedef struct CharDriver {
191bc01b 3974 const char *name;
99aec012 3975 ChardevBackendKind kind;
2c5f4882 3976 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3977 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3978 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3979} CharDriver;
3980
3981static GSList *backends;
3982
e4d50d47 3983void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3984 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3985 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3986 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3987{
3988 CharDriver *s;
3989
3990 s = g_malloc0(sizeof(*s));
3991 s->name = g_strdup(name);
3992 s->kind = kind;
3993 s->parse = parse;
4ca17281 3994 s->create = create;
2c5f4882
GH		 3995
3996 backends = g_slist_append(backends, s);
3997}
3998
f69554b9 3999CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
b4948be9 4000 Error **errp)
191bc01b 4001{
0aff637e 4002 Error *local_err = NULL;
d654f34e 4003 CharDriver *cd;
191bc01b 4004 CharDriverState *chr;
d654f34e 4005 GSList *i;
a61ae7f8
PM		 4006 ChardevReturn *ret = NULL;
4007 ChardevBackend *backend;
4008 const char *id = qemu_opts_id(opts);
4009 char *bid = NULL;
191bc01b 4010
1bbd185f 4011 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 4012 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 4013 qemu_opts_id(opts));
2274ae9d 4014 goto err;
1bbd185f 4015 }
517b3d40
LM		 4016
4017 if (is_help_option(qemu_opt_get(opts, "backend"))) {
4018 fprintf(stderr, "Available chardev backend types:\n");
4019 for (i = backends; i; i = i->next) {
4020 cd = i->data;
4021 fprintf(stderr, "%s\n", cd->name);
4022 }
4023 exit(!is_help_option(qemu_opt_get(opts, "backend")));
4024 }
4025
4026 if (id == NULL) {
4027 error_setg(errp, "chardev: no id specified");
4028 goto err;
4029 }
4030
d654f34e
AL		 4031 for (i = backends; i; i = i->next) {
4032 cd = i->data;
4033
4034 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 4035 break;
d654f34e 4036 }
191bc01b 4037 }
d654f34e 4038 if (i == NULL) {
312fd5f2 4039 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 4040 qemu_opt_get(opts, "backend"));
e668287d 4041 goto err;
191bc01b
GH		 4042 }
4043
a61ae7f8 4044 backend = g_new0(ChardevBackend, 1);
edb2fb3c 4045
a61ae7f8
PM		 4046 if (qemu_opt_get_bool(opts, "mux", 0)) {
4047 bid = g_strdup_printf("%s-base", id);
4048 }
2c5f4882 4049
a61ae7f8 4050 chr = NULL;
130257dc 4051 backend->type = cd->kind;
a61ae7f8
PM		 4052 if (cd->parse) {
4053 cd->parse(opts, backend, &local_err);
4054 if (local_err) {
4055 error_propagate(errp, local_err);
2c5f4882
GH		 4056 goto qapi_out;
4057 }
d0d7708b
DB		 4058 } else {
4059 ChardevCommon *cc = g_new0(ChardevCommon, 1);
4060 qemu_chr_parse_common(opts, cc);
32bafa8f 4061 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 4062 }
d0d7708b 4063
a61ae7f8
PM		 4064 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
4065 if (!ret) {
4066 goto qapi_out;
191bc01b
GH		 4067 }
4068
a61ae7f8
PM		 4069 if (bid) {
4070 qapi_free_ChardevBackend(backend);
4071 qapi_free_ChardevReturn(ret);
4072 backend = g_new0(ChardevBackend, 1);
32bafa8f 4073 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 4074 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 4075 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 4076 ret = qmp_chardev_add(id, backend, errp);
4077 if (!ret) {
4078 chr = qemu_chr_find(bid);
4079 qemu_chr_delete(chr);
4080 chr = NULL;
4081 goto qapi_out;
4082 }
bd5c51ee 4083 }
7591c5c1 4084
a61ae7f8 4085 chr = qemu_chr_find(id);
a61ae7f8
PM		 4086
4087qapi_out:
4088 qapi_free_ChardevBackend(backend);
4089 qapi_free_ChardevReturn(ret);
4090 g_free(bid);
191bc01b 4091 return chr;
2274ae9d
GH		 4092
4093err:
2274ae9d 4094 return NULL;
191bc01b
GH		 4095}
4096
b4948be9 4097CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename)
6f97dba0
AL		 4098{
4099 const char *p;
4100 CharDriverState *chr;
191bc01b 4101 QemuOpts *opts;
bd2d80b2 4102 Error *err = NULL;
191bc01b 4103
c845f401
GH		 4104 if (strstart(filename, "chardev:", &p)) {
4105 return qemu_chr_find(p);
4106 }
4107
191bc01b 4108 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 4109 if (!opts)
4110 return NULL;
6f97dba0 4111
b4948be9 4112 chr = qemu_chr_new_from_opts(opts, &err);
84d18f06 4113 if (err) {
565f65d2 4114 error_report_err(err);
bd2d80b2 4115 }
7e1b35b4 4116 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 4117 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 4118 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0 4119 }
0a73336d 4120 qemu_opts_del(opts);
6f97dba0
AL		 4121 return chr;
4122}
4123
b4948be9 4124CharDriverState *qemu_chr_new(const char *label, const char *filename)
33577b47
PD		 4125{
4126 CharDriverState *chr;
b4948be9 4127 chr = qemu_chr_new_noreplay(label, filename);
33577b47
PD		 4128 if (chr) {
4129 chr->replay = replay_mode != REPLAY_MODE_NONE;
4130 if (chr->replay && chr->chr_ioctl) {
4131 fprintf(stderr,
4132 "Replay: ioctl is not supported for serial devices yet\n");
4133 }
4134 replay_register_char_driver(chr);
4135 }
4136 return chr;
4137}
4138
5345fdb4 4139void qemu_chr_fe_set_echo(CharBackend *be, bool echo)
c48855e1 4140{
5345fdb4
MAL		 4141 CharDriverState *chr = be->chr;
4142
c48855e1
PB		 4143 if (chr->chr_set_echo) {
4144 chr->chr_set_echo(chr, echo);
4145 }
4146}
4147
5345fdb4 4148void qemu_chr_fe_set_open(CharBackend *be, int fe_open)
7c32c4fe 4149{
5345fdb4
MAL		 4150 CharDriverState *chr = be->chr;
4151
8e25daa8 4152 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 4153 return;
4154 }
8e25daa8 4155 chr->fe_open = fe_open;
574b711a
HG		 4156 if (chr->chr_set_fe_open) {
4157 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 4158 }
4159}
4160
5345fdb4 4161void qemu_chr_fe_event(CharBackend *be, int event)
d61b0c9a 4162{
5345fdb4
MAL		 4163 CharDriverState *chr = be->chr;
4164
d61b0c9a
MAL		 4165 if (chr->chr_fe_event) {
4166 chr->chr_fe_event(chr, event);
4167 }
4168}
4169
5345fdb4 4170guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
6f1de6b7 4171 GIOFunc func, void *user_data)
23673ca7 4172{
5345fdb4 4173 CharDriverState *s = be->chr;
23673ca7
AL		 4174 GSource *src;
4175 guint tag;
4176
4177 if (s->chr_add_watch == NULL) {
6f1de6b7 4178 return 0;
23673ca7
AL		 4179 }
4180
4181 src = s->chr_add_watch(s, cond);
62c339c5 4182 if (!src) {
6f1de6b7 4183 return 0;
62c339c5
PB		 4184 }
4185
23673ca7
AL		 4186 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
4187 tag = g_source_attach(src, NULL);
4188 g_source_unref(src);
4189
4190 return tag;
4191}
4192
44c473de
HG		 4193int qemu_chr_fe_claim(CharDriverState *s)
4194{
4195 if (s->avail_connections < 1) {
4196 return -1;
4197 }
4198 s->avail_connections--;
4199 return 0;
4200}
4201
4202void qemu_chr_fe_claim_no_fail(CharDriverState *s)
4203{
4204 if (qemu_chr_fe_claim(s) != 0) {
4205 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
4206 __func__, s->label);
4207 exit(1);
4208 }
4209}
4210
4211void qemu_chr_fe_release(CharDriverState *s)
4212{
4213 s->avail_connections++;
4214}
4215
5345fdb4 4216void qemu_chr_fe_disconnect(CharBackend *be)
7d9d17f7 4217{
5345fdb4
MAL		 4218 CharDriverState *chr = be->chr;
4219
7d9d17f7
TM		 4220 if (chr->chr_disconnect) {
4221 chr->chr_disconnect(chr);
4222 }
4223}
4224
d0d7708b 4225static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4226{
7267c094
AL		 4227 g_free(chr->filename);
4228 g_free(chr->label);
d0d7708b
DB		 4229 if (chr->logfd != -1) {
4230 close(chr->logfd);
4231 }
fefd749c 4232 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4233 g_free(chr);
6f97dba0
AL		 4234}
4235
d0d7708b
DB		 4236void qemu_chr_free(CharDriverState *chr)
4237{
4238 if (chr->chr_close) {
4239 chr->chr_close(chr);
4240 }
4241 qemu_chr_free_common(chr);
4242}
4243
1ad78ea5
MAL		 4244void qemu_chr_delete(CharDriverState *chr)
4245{
4246 QTAILQ_REMOVE(&chardevs, chr, next);
4247 qemu_chr_free(chr);
4248}
4249
c5a415a0 4250ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4251{
c5a415a0 4252 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4253 CharDriverState *chr;
4254
72cf2d4f 4255 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4256 ChardevInfoList *info = g_malloc0(sizeof(*info));
4257 info->value = g_malloc0(sizeof(*info->value));
4258 info->value->label = g_strdup(chr->label);
4259 info->value->filename = g_strdup(chr->filename);
32a97ea1 4260 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4261
4262 info->next = chr_list;
4263 chr_list = info;
6f97dba0 4264 }
588b3832 4265
c5a415a0 4266 return chr_list;
6f97dba0 4267}
c845f401 4268
77d1c3c6
MK		 4269ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4270{
4271 ChardevBackendInfoList *backend_list = NULL;
4272 CharDriver *c = NULL;
4273 GSList *i = NULL;
4274
4275 for (i = backends; i; i = i->next) {
4276 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4277 c = i->data;
4278 info->value = g_malloc0(sizeof(*info->value));
4279 info->value->name = g_strdup(c->name);
4280
4281 info->next = backend_list;
4282 backend_list = info;
4283 }
4284
4285 return backend_list;
4286}
4287
c845f401
GH		 4288CharDriverState *qemu_chr_find(const char *name)
4289{
4290 CharDriverState *chr;
4291
72cf2d4f 4292 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4293 if (strcmp(chr->label, name) != 0)
4294 continue;
4295 return chr;
4296 }
4297 return NULL;
4298}
0beb4942 4299
4d454574
PB		 4300QemuOptsList qemu_chardev_opts = {
4301 .name = "chardev",
4302 .implied_opt_name = "backend",
4303 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4304 .desc = {
4305 {
4306 .name = "backend",
4307 .type = QEMU_OPT_STRING,
4308 },{
4309 .name = "path",
4310 .type = QEMU_OPT_STRING,
4311 },{
4312 .name = "host",
4313 .type = QEMU_OPT_STRING,
4314 },{
4315 .name = "port",
4316 .type = QEMU_OPT_STRING,
4317 },{
4318 .name = "localaddr",
4319 .type = QEMU_OPT_STRING,
4320 },{
4321 .name = "localport",
4322 .type = QEMU_OPT_STRING,
4323 },{
4324 .name = "to",
4325 .type = QEMU_OPT_NUMBER,
4326 },{
4327 .name = "ipv4",
4328 .type = QEMU_OPT_BOOL,
4329 },{
4330 .name = "ipv6",
4331 .type = QEMU_OPT_BOOL,
4332 },{
4333 .name = "wait",
4334 .type = QEMU_OPT_BOOL,
4335 },{
4336 .name = "server",
4337 .type = QEMU_OPT_BOOL,
4338 },{
4339 .name = "delay",
4340 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4341 },{
4342 .name = "reconnect",
4343 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4344 },{
4345 .name = "telnet",
4346 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4347 },{
4348 .name = "tls-creds",
4349 .type = QEMU_OPT_STRING,
4d454574
PB		 4350 },{
4351 .name = "width",
4352 .type = QEMU_OPT_NUMBER,
4353 },{
4354 .name = "height",
4355 .type = QEMU_OPT_NUMBER,
4356 },{
4357 .name = "cols",
4358 .type = QEMU_OPT_NUMBER,
4359 },{
4360 .name = "rows",
4361 .type = QEMU_OPT_NUMBER,
4362 },{
4363 .name = "mux",
4364 .type = QEMU_OPT_BOOL,
4365 },{
4366 .name = "signal",
4367 .type = QEMU_OPT_BOOL,
4368 },{
4369 .name = "name",
4370 .type = QEMU_OPT_STRING,
4371 },{
4372 .name = "debug",
4373 .type = QEMU_OPT_NUMBER,
51767e7c 4374 },{
3949e594 4375 .name = "size",
de1cc36e 4376 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4377 },{
4378 .name = "chardev",
4379 .type = QEMU_OPT_STRING,
31e38a22
OK		 4380 },{
4381 .name = "append",
4382 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4383 },{
4384 .name = "logfile",
4385 .type = QEMU_OPT_STRING,
4386 },{
4387 .name = "logappend",
4388 .type = QEMU_OPT_BOOL,
4d454574
PB		 4389 },
4390 { /* end of list */ }
4391 },
4392};
f1a1a356 4393
ffbdbe59
GH		 4394#ifdef _WIN32
4395
fd5b036c
PB		 4396static CharDriverState *qmp_chardev_open_file(const char *id,
4397 ChardevBackend *backend,
4398 ChardevReturn *ret,
4399 Error **errp)
ffbdbe59 4400{
32bafa8f 4401 ChardevFile *file = backend->u.file.data;
f194a1ae 4402 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59 4403 HANDLE out;
c025f689
SW		 4404 DWORD accessmode;
4405 DWORD flags;
ffbdbe59 4406
e859eda5 4407 if (file->has_in) {
ffbdbe59
GH		 4408 error_setg(errp, "input file not supported");
4409 return NULL;
4410 }
4411
c025f689
SW		 4412 if (file->has_append && file->append) {
4413 /* Append to file if it already exists. */
4414 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
4415 flags = OPEN_ALWAYS;
4416 } else {
4417 /* Truncate file if it already exists. */
4418 accessmode = GENERIC_WRITE;
4419 flags = CREATE_ALWAYS;
4420 }
4421
4422 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
4423 FILE_ATTRIBUTE_NORMAL, NULL);
ffbdbe59
GH		 4424 if (out == INVALID_HANDLE_VALUE) {
4425 error_setg(errp, "open %s failed", file->out);
4426 return NULL;
4427 }
d0d7708b 4428 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4429}
4430
6511d396
PB		 4431static CharDriverState *qmp_chardev_open_serial(const char *id,
4432 ChardevBackend *backend,
4433 ChardevReturn *ret,
d36b2b90 4434 Error **errp)
d59044ef 4435{
32bafa8f 4436 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4437 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4438 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4439}
4440
ffbdbe59
GH		 4441#else /* WIN32 */
4442
4443static int qmp_chardev_open_file_source(char *src, int flags,
4444 Error **errp)
4445{
4446 int fd = -1;
4447
4448 TFR(fd = qemu_open(src, flags, 0666));
4449 if (fd == -1) {
20c39760 4450 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4451 }
4452 return fd;
4453}
4454
fd5b036c
PB		 4455static CharDriverState *qmp_chardev_open_file(const char *id,
4456 ChardevBackend *backend,
4457 ChardevReturn *ret,
4458 Error **errp)
ffbdbe59 4459{
32bafa8f 4460 ChardevFile *file = backend->u.file.data;
f194a1ae 4461 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4462 int flags, in = -1, out;
ffbdbe59 4463
31e38a22
OK		 4464 flags = O_WRONLY | O_CREAT | O_BINARY;
4465 if (file->has_append && file->append) {
4466 flags |= O_APPEND;
4467 } else {
4468 flags |= O_TRUNC;
4469 }
4470
ffbdbe59 4471 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4472 if (out < 0) {
ffbdbe59
GH		 4473 return NULL;
4474 }
4475
e859eda5 4476 if (file->has_in) {
ffbdbe59
GH		 4477 flags = O_RDONLY;
4478 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4479 if (in < 0) {
ffbdbe59
GH		 4480 qemu_close(out);
4481 return NULL;
4482 }
4483 }
4484
d0d7708b 4485 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4486}
4487
d809ab95 4488#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4489static CharDriverState *qmp_chardev_open_serial(const char *id,
4490 ChardevBackend *backend,
4491 ChardevReturn *ret,
d36b2b90 4492 Error **errp)
d59044ef 4493{
32bafa8f 4494 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4495 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4496 int fd;
4497
4498 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4499 if (fd < 0) {
d36b2b90 4500 return NULL;
39099991 4501 }
f9e8cacc 4502 qemu_set_nonblock(fd);
d0d7708b 4503 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4504}
6511d396 4505#endif
d36b2b90 4506
d809ab95 4507#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4508static CharDriverState *qmp_chardev_open_parallel(const char *id,
4509 ChardevBackend *backend,
4510 ChardevReturn *ret,
d36b2b90
MA		 4511 Error **errp)
4512{
32bafa8f 4513 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4514 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4515 int fd;
4516
4517 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4518 if (fd < 0) {
d59044ef
GH		 4519 return NULL;
4520 }
d0d7708b 4521 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4522}
d809ab95 4523#endif
d59044ef 4524
ffbdbe59
GH		 4525#endif /* WIN32 */
4526
5dd1f02b
CM		 4527static gboolean socket_reconnect_timeout(gpointer opaque)
4528{
4529 CharDriverState *chr = opaque;
4530 TCPCharDriver *s = chr->opaque;
317856ca 4531 QIOChannelSocket *sioc;
5dd1f02b
CM		 4532
4533 s->reconnect_timer = 0;
4534
4535 if (chr->be_open) {
4536 return false;
4537 }
4538
317856ca
DB		 4539 sioc = qio_channel_socket_new();
4540 qio_channel_socket_connect_async(sioc, s->addr,
4541 qemu_chr_socket_connected,
4542 chr, NULL);
5dd1f02b
CM		 4543
4544 return false;
4545}
4546
dbba8d1b
PB		 4547static CharDriverState *qmp_chardev_open_socket(const char *id,
4548 ChardevBackend *backend,
4549 ChardevReturn *ret,
f6bd5d6e
GH		 4550 Error **errp)
4551{
43ded1a0
CM		 4552 CharDriverState *chr;
4553 TCPCharDriver *s;
32bafa8f 4554 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4555 SocketAddress *addr = sock->addr;
4556 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4557 bool is_listen = sock->has_server ? sock->server : true;
4558 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4559 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4560 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4561 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4562 QIOChannelSocket *sioc = NULL;
43ded1a0 4563
d0d7708b
DB		 4564 chr = qemu_chr_alloc(common, errp);
4565 if (!chr) {
4566 return NULL;
4567 }
2d528d45 4568 s = g_new0(TCPCharDriver, 1);
43ded1a0 4569
130257dc 4570 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4571 s->is_listen = is_listen;
4572 s->is_telnet = is_telnet;
43ded1a0 4573 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4574 if (sock->tls_creds) {
4575 Object *creds;
4576 creds = object_resolve_path_component(
4577 object_get_objects_root(), sock->tls_creds);
4578 if (!creds) {
4579 error_setg(errp, "No TLS credentials with id '%s'",
4580 sock->tls_creds);
4581 goto error;
4582 }
4583 s->tls_creds = (QCryptoTLSCreds *)
4584 object_dynamic_cast(creds,
4585 TYPE_QCRYPTO_TLS_CREDS);
4586 if (!s->tls_creds) {
4587 error_setg(errp, "Object with id '%s' is not TLS credentials",
4588 sock->tls_creds);
4589 goto error;
4590 }
4591 object_ref(OBJECT(s->tls_creds));
4592 if (is_listen) {
4593 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4594 error_setg(errp, "%s",
4595 "Expected TLS credentials for server endpoint");
4596 goto error;
4597 }
4598 } else {
4599 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4600 error_setg(errp, "%s",
4601 "Expected TLS credentials for client endpoint");
4602 goto error;
4603 }
4604 }
4605 }
4606
37f9e0a2 4607 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0 4608
0a73336d
DB		 4609 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE);
4610 if (s->is_unix) {
4611 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS);
4612 }
4613
43ded1a0 4614 chr->opaque = s;
d7a04fd7 4615 chr->chr_wait_connected = tcp_chr_wait_connected;
43ded1a0
CM		 4616 chr->chr_write = tcp_chr_write;
4617 chr->chr_sync_read = tcp_chr_sync_read;
4618 chr->chr_close = tcp_chr_close;
7d9d17f7 4619 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4620 chr->get_msgfds = tcp_get_msgfds;
4621 chr->set_msgfds = tcp_set_msgfds;
4622 chr->chr_add_client = tcp_chr_add_client;
4623 chr->chr_add_watch = tcp_chr_add_watch;
4624 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4625 /* be isn't opened until we get a connection */
4626 chr->explicit_be_open = true;
4627
0ff0fad2
DB		 4628 chr->filename = SocketAddress_to_str("disconnected:",
4629 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4630
4631 if (is_listen) {
43ded1a0
CM		 4632 if (is_telnet) {
4633 s->do_telnetopt = 1;
4634 }
5dd1f02b
CM		 4635 } else if (reconnect > 0) {
4636 s->reconnect_time = reconnect;
f6bd5d6e 4637 }
43ded1a0 4638
5008e5b7 4639 if (s->reconnect_time) {
d7a04fd7 4640 sioc = qio_channel_socket_new();
317856ca
DB		 4641 qio_channel_socket_connect_async(sioc, s->addr,
4642 qemu_chr_socket_connected,
4643 chr, NULL);
08b758b4 4644 } else {
d7a04fd7
MAL		 4645 if (s->is_listen) {
4646 sioc = qio_channel_socket_new();
4647 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4648 goto error;
4649 }
4650 s->listen_ioc = sioc;
4651 if (is_waitconnect &&
4652 qemu_chr_wait_connected(chr, errp) < 0) {
4653 goto error;
4654 }
4655 if (!s->ioc) {
4656 s->listen_tag = qio_channel_add_watch(
4657 QIO_CHANNEL(s->listen_ioc), G_IO_IN,
4658 tcp_chr_accept, chr, NULL);
4659 }
4660 } else if (qemu_chr_wait_connected(chr, errp) < 0) {
08b758b4
DB		 4661 goto error;
4662 }
43ded1a0
CM		 4663 }
4664
4665 return chr;
a8fb5427
DB		 4666
4667 error:
08b758b4
DB		 4668 if (sioc) {
4669 object_unref(OBJECT(sioc));
4670 }
a8fb5427
DB		 4671 if (s->tls_creds) {
4672 object_unref(OBJECT(s->tls_creds));
4673 }
4674 g_free(s);
4675 qemu_chr_free_common(chr);
4676 return NULL;
f6bd5d6e
GH		 4677}
4678
e79b80da
PB		 4679static CharDriverState *qmp_chardev_open_udp(const char *id,
4680 ChardevBackend *backend,
4681 ChardevReturn *ret,
08d0ab3f 4682 Error **errp)
3ecc059d 4683{
32bafa8f 4684 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4685 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4686 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4687
9894dc0c 4688 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4689 udp->local, udp->remote,
9894dc0c
DB		 4690 errp) < 0) {
4691 object_unref(OBJECT(sioc));
3ecc059d
GH		 4692 return NULL;
4693 }
9894dc0c 4694 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4695}
4696
0a73336d
DB		 4697
4698bool qemu_chr_has_feature(CharDriverState *chr,
4699 CharDriverFeature feature)
4700{
4701 return test_bit(feature, chr->features);
4702}
4703
4704void qemu_chr_set_feature(CharDriverState *chr,
4705 CharDriverFeature feature)
4706{
4707 return set_bit(feature, chr->features);
4708}
4709
f1a1a356
GH		 4710ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4711 Error **errp)
4712{
4713 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4714 CharDriverState *chr = NULL;
eaeba653 4715 Error *local_err = NULL;
4ca17281
PB		 4716 GSList *i;
4717 CharDriver *cd;
f1a1a356
GH		 4718
4719 chr = qemu_chr_find(id);
4720 if (chr) {
4721 error_setg(errp, "Chardev '%s' already exists", id);
4722 g_free(ret);
4723 return NULL;
4724 }
4725
4ca17281
PB		 4726 for (i = backends; i; i = i->next) {
4727 cd = i->data;
4728
130257dc 4729 if (cd->kind == backend->type) {
4ca17281
PB		 4730 chr = cd->create(id, backend, ret, &local_err);
4731 if (local_err) {
4732 error_propagate(errp, local_err);
4733 goto out_error;
4734 }
4735 break;
4736 }
4737 }
4738
4739 if (chr == NULL) {
1c3af0f4
PB		 4740 assert(!i);
4741 error_setg(errp, "chardev backend not available");
4742 goto out_error;
eaeba653
PB		 4743 }
4744
4745 chr->label = g_strdup(id);
4746 chr->avail_connections =
130257dc 4747 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4748 if (!chr->filename) {
130257dc 4749 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4750 }
eaeba653
PB		 4751 if (!chr->explicit_be_open) {
4752 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4753 }
4754 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4755 return ret;
4756
4757out_error:
4758 g_free(ret);
4759 return NULL;
f1a1a356
GH		 4760}
4761
4762void qmp_chardev_remove(const char *id, Error **errp)
4763{
4764 CharDriverState *chr;
4765
4766 chr = qemu_chr_find(id);
8108fd3e 4767 if (chr == NULL) {
f1a1a356
GH		 4768 error_setg(errp, "Chardev '%s' not found", id);
4769 return;
4770 }
4771 if (chr->chr_can_read || chr->chr_read ||
4772 chr->chr_event || chr->handler_opaque) {
4773 error_setg(errp, "Chardev '%s' is busy", id);
4774 return;
4775 }
33577b47
PD		 4776 if (chr->replay) {
4777 error_setg(errp,
4778 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4779 return;
4780 }
f1a1a356
GH		 4781 qemu_chr_delete(chr);
4782}
d654f34e 4783
aa5cb7f5 4784void qemu_chr_cleanup(void)
c1111a24
MAL		 4785{
4786 CharDriverState *chr, *tmp;
4787
4788 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4789 qemu_chr_delete(chr);
4790 }
4791}
4792
d654f34e
AL		 4793static void register_types(void)
4794{
4ca17281 4795 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4796 qemu_chr_open_null);
e4d50d47 4797 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4798 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4799 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4800 qmp_chardev_open_udp);
e4d50d47 4801 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4802 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4803 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4804 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4805 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4806 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4807#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4808 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4809 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4810 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4811 qemu_chr_parse_serial, qmp_chardev_open_serial);
4812#endif
38bfb1a6 4813#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4814 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4815 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4816 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4817 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4818#endif
c2e75a43 4819#ifdef HAVE_CHARDEV_PTY
4ca17281 4820 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4821 qemu_chr_open_pty);
4822#endif
122e5ed4 4823#ifdef _WIN32
4ca17281 4824 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4825 qemu_chr_open_win_con);
4826#endif
e4d50d47 4827 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4828 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4829 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4830 qemu_chr_open_mux);
c11ed966 4831 /* Bug-compatibility: */
e4d50d47 4832 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4833 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4834 /* this must be done after machine init, since we register FEs with muxes
4835 * as part of realize functions like serial_isa_realizefn when -nographic
4836 * is specified
4837 */
4838 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4839}
4840
4841type_init(register_types);
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