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[thirdparty/qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "qemu-common.h"
83c9089e 25#include "monitor/monitor.h"
9c17d615 26#include "sysemu/sysemu.h"
d49b6836 27#include "qemu/error-report.h"
1de7afc9 28#include "qemu/timer.h"
dccfcd0e 29#include "sysemu/char.h"
cf3ebac7 30#include "hw/usb.h"
c5a415a0 31#include "qmp-commands.h"
cfb429cb
CM		 32#include "qapi/qmp-input-visitor.h"
33#include "qapi/qmp-output-visitor.h"
34#include "qapi-visit.h"
e9cf2fe0 35#include "qemu/base64.h"
9894dc0c
DB		 36#include "io/channel-socket.h"
37#include "io/channel-file.h"
a8fb5427 38#include "io/channel-tls.h"
6f97dba0
AL		 39
40#include <unistd.h>
41#include <fcntl.h>
6f97dba0
AL		 42#include <time.h>
43#include <errno.h>
44#include <sys/time.h>
45#include <zlib.h>
46
47#ifndef _WIN32
48#include <sys/times.h>
49#include <sys/wait.h>
50#include <termios.h>
51#include <sys/mman.h>
52#include <sys/ioctl.h>
24646c7e 53#include <sys/resource.h>
6f97dba0
AL		 54#include <sys/socket.h>
55#include <netinet/in.h>
24646c7e 56#include <net/if.h>
24646c7e 57#include <arpa/inet.h>
6f97dba0
AL		 58#include <netdb.h>
59#include <sys/select.h>
71e72a19 60#ifdef CONFIG_BSD
6f97dba0 61#include <sys/stat.h>
3294ce18
MT		 62#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
63#include <dev/ppbus/ppi.h>
64#include <dev/ppbus/ppbconf.h>
c5e97233 65#elif defined(__DragonFly__)
c5e97233
BS		 66#include <dev/misc/ppi/ppi.h>
67#include <bus/ppbus/ppbconf.h>
6f97dba0 68#endif
bbe813a2 69#else
6f97dba0 70#ifdef __linux__
6f97dba0
AL		 71#include <linux/ppdev.h>
72#include <linux/parport.h>
73#endif
74#ifdef __sun__
75#include <sys/stat.h>
76#include <sys/ethernet.h>
77#include <sys/sockio.h>
78#include <netinet/arp.h>
79#include <netinet/in.h>
80#include <netinet/in_systm.h>
81#include <netinet/ip.h>
82#include <netinet/ip_icmp.h> // must come after ip.h
83#include <netinet/udp.h>
84#include <netinet/tcp.h>
6f97dba0
AL		 85#endif
86#endif
87#endif
88
1de7afc9 89#include "qemu/sockets.h"
cbcc6336 90#include "ui/qemu-spice.h"
6f97dba0 91
9bd7854e 92#define READ_BUF_LEN 4096
7b0bfdf5 93#define READ_RETRIES 10
c4095726 94#define TCP_MAX_FDS 16
9bd7854e 95
cfb429cb
CM		 96/***********************************************************/
97/* Socket address helpers */
cfb429cb 98
0ff0fad2
DB		 99static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
100 bool is_listen, bool is_telnet)
16cc4ffe 101{
130257dc 102 switch (addr->type) {
16cc4ffe 103 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2
DB		 104 return g_strdup_printf("%s%s:%s:%s%s", prefix,
105 is_telnet ? "telnet" : "tcp", addr->u.inet->host,
106 addr->u.inet->port, is_listen ? ",server" : "");
16cc4ffe
CM		 107 break;
108 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2
DB		 109 return g_strdup_printf("%sunix:%s%s", prefix,
110 addr->u.q_unix->path,
111 is_listen ? ",server" : "");
16cc4ffe
CM		 112 break;
113 case SOCKET_ADDRESS_KIND_FD:
0ff0fad2
DB		 114 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd->str,
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) {
229 do {
230 ret = write(s->logfd, buf + done, len - done);
231 if (ret == -1 && errno == EAGAIN) {
232 g_usleep(100);
233 }
234 } while (ret == -1 && errno == EAGAIN);
235
236 if (ret <= 0) {
237 return;
238 }
239 done += ret;
240 }
241}
242
2cc6e0a1 243int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 244{
9005b2a7
PB		 245 int ret;
246
247 qemu_mutex_lock(&s->chr_write_lock);
248 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 249
250 if (ret > 0) {
251 qemu_chr_fe_write_log(s, buf, ret);
252 }
253
9005b2a7
PB		 254 qemu_mutex_unlock(&s->chr_write_lock);
255 return ret;
6f97dba0
AL		 256}
257
cd18720a
AL		 258int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
259{
260 int offset = 0;
09313047 261 int res = 0;
cd18720a 262
9005b2a7 263 qemu_mutex_lock(&s->chr_write_lock);
cd18720a
AL		 264 while (offset < len) {
265 do {
266 res = s->chr_write(s, buf + offset, len - offset);
267 if (res == -1 && errno == EAGAIN) {
268 g_usleep(100);
269 }
270 } while (res == -1 && errno == EAGAIN);
271
9005b2a7 272 if (res <= 0) {
cd18720a
AL		 273 break;
274 }
275
cd18720a
AL		 276 offset += res;
277 }
d0d7708b
DB		 278 if (offset > 0) {
279 qemu_chr_fe_write_log(s, buf, offset);
280 }
281
9005b2a7 282 qemu_mutex_unlock(&s->chr_write_lock);
cd18720a 283
9005b2a7
PB		 284 if (res < 0) {
285 return res;
286 }
cd18720a
AL		 287 return offset;
288}
289
7b0bfdf5
NN		 290int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
291{
292 int offset = 0, counter = 10;
293 int res;
294
295 if (!s->chr_sync_read) {
296 return 0;
297 }
298
299 while (offset < len) {
300 do {
301 res = s->chr_sync_read(s, buf + offset, len - offset);
302 if (res == -1 && errno == EAGAIN) {
303 g_usleep(100);
304 }
305 } while (res == -1 && errno == EAGAIN);
306
307 if (res == 0) {
308 break;
309 }
310
311 if (res < 0) {
312 return res;
313 }
314
315 offset += res;
316
317 if (!counter--) {
318 break;
319 }
320 }
321
322 return offset;
323}
324
41084f1b 325int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 326{
327 if (!s->chr_ioctl)
328 return -ENOTSUP;
329 return s->chr_ioctl(s, cmd, arg);
330}
331
909cda12 332int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 333{
334 if (!s->chr_can_read)
335 return 0;
336 return s->chr_can_read(s->handler_opaque);
337}
338
fa5efccb 339void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 340{
ac310734
SW		 341 if (s->chr_read) {
342 s->chr_read(s->handler_opaque, buf, len);
343 }
6f97dba0
AL		 344}
345
74c0d6f0 346int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 347{
c76bf6bb 348 int fd;
4f858614 349 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
c76bf6bb
NN		 350}
351
352int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
353{
354 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 355}
356
d39aac7a
NN		 357int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
358{
359 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
360}
361
13661089
DB		 362int qemu_chr_add_client(CharDriverState *s, int fd)
363{
364 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
365}
366
6f97dba0
AL		 367void qemu_chr_accept_input(CharDriverState *s)
368{
369 if (s->chr_accept_input)
370 s->chr_accept_input(s);
98c8ee1d 371 qemu_notify_event();
6f97dba0
AL		 372}
373
e7e71b0e 374void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 375{
9bd7854e 376 char buf[READ_BUF_LEN];
6f97dba0
AL		 377 va_list ap;
378 va_start(ap, fmt);
379 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 380 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 381 va_end(ap);
382}
383
386a5a1e
AS		 384static void remove_fd_in_watch(CharDriverState *chr);
385
6f97dba0 386void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 387 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 388 IOReadHandler *fd_read,
389 IOEventHandler *fd_event,
390 void *opaque)
391{
19083228
HG		 392 int fe_open;
393
da7d998b 394 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 395 fe_open = 0;
386a5a1e 396 remove_fd_in_watch(s);
19083228
HG		 397 } else {
398 fe_open = 1;
2d6c1ef4 399 }
6f97dba0
AL		 400 s->chr_can_read = fd_can_read;
401 s->chr_read = fd_read;
402 s->chr_event = fd_event;
403 s->handler_opaque = opaque;
ac1b84dd 404 if (fe_open && s->chr_update_read_handler)
6f97dba0 405 s->chr_update_read_handler(s);
73cdf3f2 406
19083228 407 if (!s->explicit_fe_open) {
8e25daa8 408 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 409 }
410
73cdf3f2
AG		 411 /* We're connecting to an already opened device, so let's make sure we
412 also get the open event */
a59bcd31 413 if (fe_open && s->be_open) {
fee204fd 414 qemu_chr_be_generic_open(s);
73cdf3f2 415 }
6f97dba0
AL		 416}
417
418static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
419{
420 return len;
421}
422
0d64992b
PB		 423static CharDriverState *qemu_chr_open_null(const char *id,
424 ChardevBackend *backend,
425 ChardevReturn *ret,
426 Error **errp)
6f97dba0
AL		 427{
428 CharDriverState *chr;
d0d7708b 429 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.null);
6f97dba0 430
d0d7708b
DB		 431 chr = qemu_chr_alloc(common, errp);
432 if (!chr) {
433 return NULL;
434 }
6f97dba0 435 chr->chr_write = null_chr_write;
bd5c51ee 436 chr->explicit_be_open = true;
1f51470d 437 return chr;
6f97dba0
AL		 438}
439
440/* MUX driver for serial I/O splitting */
6f97dba0
AL		 441#define MAX_MUX 4
442#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
443#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
444typedef struct {
7b27a769 445 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 446 IOReadHandler *chr_read[MAX_MUX];
447 IOEventHandler *chr_event[MAX_MUX];
448 void *ext_opaque[MAX_MUX];
449 CharDriverState *drv;
799f1f23 450 int focus;
6f97dba0
AL		 451 int mux_cnt;
452 int term_got_escape;
453 int max_size;
a80bf99f
AL		 454 /* Intermediate input buffer allows to catch escape sequences even if the
455 currently active device is not accepting any input - but only until it
456 is full as well. */
457 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
458 int prod[MAX_MUX];
459 int cons[MAX_MUX];
2d22959d 460 int timestamps;
9005b2a7
PB		 461
462 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 463 int linestart;
2d22959d 464 int64_t timestamps_start;
6f97dba0
AL		 465} MuxDriver;
466
467
9005b2a7 468/* Called with chr_write_lock held. */
6f97dba0
AL		 469static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
470{
471 MuxDriver *d = chr->opaque;
472 int ret;
2d22959d 473 if (!d->timestamps) {
6975b713 474 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 475 } else {
476 int i;
477
478 ret = 0;
4ab312f7
JK		 479 for (i = 0; i < len; i++) {
480 if (d->linestart) {
6f97dba0
AL		 481 char buf1[64];
482 int64_t ti;
483 int secs;
484
bc72ad67 485 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 486 if (d->timestamps_start == -1)
487 d->timestamps_start = ti;
488 ti -= d->timestamps_start;
a4bb1db8 489 secs = ti / 1000;
6f97dba0
AL		 490 snprintf(buf1, sizeof(buf1),
491 "[%02d:%02d:%02d.%03d] ",
492 secs / 3600,
493 (secs / 60) % 60,
494 secs % 60,
a4bb1db8 495 (int)(ti % 1000));
6975b713 496 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 497 d->linestart = 0;
498 }
6975b713 499 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 500 if (buf[i] == '\n') {
501 d->linestart = 1;
6f97dba0
AL		 502 }
503 }
504 }
505 return ret;
506}
507
508static const char * const mux_help[] = {
509 "% h print this help\n\r",
510 "% x exit emulator\n\r",
511 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 512 "% t toggle console timestamps\n\r",
6f97dba0
AL		 513 "% b send break (magic sysrq)\n\r",
514 "% c switch between console and monitor\n\r",
515 "% % sends %\n\r",
516 NULL
517};
518
519int term_escape_char = 0x01; /* ctrl-a is used for escape */
520static void mux_print_help(CharDriverState *chr)
521{
522 int i, j;
523 char ebuf[15] = "Escape-Char";
524 char cbuf[50] = "\n\r";
525
526 if (term_escape_char > 0 && term_escape_char < 26) {
527 snprintf(cbuf, sizeof(cbuf), "\n\r");
528 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
529 } else {
530 snprintf(cbuf, sizeof(cbuf),
531 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
532 term_escape_char);
533 }
6975b713 534 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 535 for (i = 0; mux_help[i] != NULL; i++) {
536 for (j=0; mux_help[i][j] != '\0'; j++) {
537 if (mux_help[i][j] == '%')
6975b713 538 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 539 else
6975b713 540 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 541 }
542 }
543}
544
2724b180
AL		 545static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
546{
547 if (d->chr_event[mux_nr])
548 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
549}
550
6f97dba0
AL		 551static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
552{
553 if (d->term_got_escape) {
554 d->term_got_escape = 0;
555 if (ch == term_escape_char)
556 goto send_char;
557 switch(ch) {
558 case '?':
559 case 'h':
560 mux_print_help(chr);
561 break;
562 case 'x':
563 {
564 const char *term = "QEMU: Terminated\n\r";
6975b713 565 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 566 exit(0);
567 break;
568 }
569 case 's':
6ab4b5ab 570 bdrv_commit_all();
6f97dba0
AL		 571 break;
572 case 'b':
a425d23f 573 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 574 break;
575 case 'c':
576 /* Switch to the next registered device */
799f1f23
GH		 577 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
578 d->focus++;
579 if (d->focus >= d->mux_cnt)
580 d->focus = 0;
581 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 582 break;
2d22959d
JK		 583 case 't':
584 d->timestamps = !d->timestamps;
585 d->timestamps_start = -1;
4ab312f7 586 d->linestart = 0;
2d22959d 587 break;
6f97dba0
AL		 588 }
589 } else if (ch == term_escape_char) {
590 d->term_got_escape = 1;
591 } else {
592 send_char:
593 return 1;
594 }
595 return 0;
596}
597
598static void mux_chr_accept_input(CharDriverState *chr)
599{
6f97dba0 600 MuxDriver *d = chr->opaque;
799f1f23 601 int m = d->focus;
6f97dba0 602
a80bf99f 603 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 604 d->chr_can_read[m] &&
605 d->chr_can_read[m](d->ext_opaque[m])) {
606 d->chr_read[m](d->ext_opaque[m],
a80bf99f 607 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 608 }
609}
610
611static int mux_chr_can_read(void *opaque)
612{
613 CharDriverState *chr = opaque;
614 MuxDriver *d = chr->opaque;
799f1f23 615 int m = d->focus;
6f97dba0 616
a80bf99f 617 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 618 return 1;
a80bf99f
AL		 619 if (d->chr_can_read[m])
620 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 621 return 0;
622}
623
624static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
625{
626 CharDriverState *chr = opaque;
627 MuxDriver *d = chr->opaque;
799f1f23 628 int m = d->focus;
6f97dba0
AL		 629 int i;
630
631 mux_chr_accept_input (opaque);
632
633 for(i = 0; i < size; i++)
634 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 635 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 636 d->chr_can_read[m] &&
637 d->chr_can_read[m](d->ext_opaque[m]))
638 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
639 else
a80bf99f 640 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 641 }
642}
643
644static void mux_chr_event(void *opaque, int event)
645{
646 CharDriverState *chr = opaque;
647 MuxDriver *d = chr->opaque;
648 int i;
649
650 /* Send the event to all registered listeners */
651 for (i = 0; i < d->mux_cnt; i++)
2724b180 652 mux_chr_send_event(d, i, event);
6f97dba0
AL		 653}
654
655static void mux_chr_update_read_handler(CharDriverState *chr)
656{
657 MuxDriver *d = chr->opaque;
658
659 if (d->mux_cnt >= MAX_MUX) {
660 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
661 return;
662 }
663 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
664 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
665 d->chr_read[d->mux_cnt] = chr->chr_read;
666 d->chr_event[d->mux_cnt] = chr->chr_event;
667 /* Fix up the real driver with mux routines */
668 if (d->mux_cnt == 0) {
669 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
670 mux_chr_event, chr);
671 }
799f1f23
GH		 672 if (d->focus != -1) {
673 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 674 }
799f1f23 675 d->focus = d->mux_cnt;
6f97dba0 676 d->mux_cnt++;
799f1f23 677 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 678}
679
7b7ab18d
MR		 680static bool muxes_realized;
681
682/**
683 * Called after processing of default and command-line-specified
684 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
685 * to a mux chardev. This is done here to ensure that
686 * output/prompts/banners are only displayed for the FE that has
687 * focus when initial command-line processing/machine init is
688 * completed.
689 *
690 * After this point, any new FE attached to any new or existing
691 * mux will receive CHR_EVENT_OPENED notifications for the BE
692 * immediately.
693 */
694static void muxes_realize_done(Notifier *notifier, void *unused)
695{
696 CharDriverState *chr;
697
698 QTAILQ_FOREACH(chr, &chardevs, next) {
699 if (chr->is_mux) {
700 MuxDriver *d = chr->opaque;
701 int i;
702
703 /* send OPENED to all already-attached FEs */
704 for (i = 0; i < d->mux_cnt; i++) {
705 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
706 }
707 /* mark mux as OPENED so any new FEs will immediately receive
708 * OPENED event
709 */
710 qemu_chr_be_generic_open(chr);
711 }
712 }
713 muxes_realized = true;
714}
715
716static Notifier muxes_realize_notify = {
717 .notify = muxes_realize_done,
718};
719
3f0838ab
KB		 720static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
721{
722 MuxDriver *d = s->opaque;
723 return d->drv->chr_add_watch(d->drv, cond);
724}
725
3c0e5a4a
PB		 726static CharDriverState *qemu_chr_open_mux(const char *id,
727 ChardevBackend *backend,
728 ChardevReturn *ret, Error **errp)
6f97dba0 729{
130257dc 730 ChardevMux *mux = backend->u.mux;
3c0e5a4a 731 CharDriverState *chr, *drv;
6f97dba0 732 MuxDriver *d;
d0d7708b 733 ChardevCommon *common = qapi_ChardevMux_base(backend->u.mux);
6f97dba0 734
3c0e5a4a
PB		 735 drv = qemu_chr_find(mux->chardev);
736 if (drv == NULL) {
737 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
738 return NULL;
739 }
740
d0d7708b
DB		 741 chr = qemu_chr_alloc(common, errp);
742 if (!chr) {
743 return NULL;
744 }
2d528d45 745 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 746
747 chr->opaque = d;
748 d->drv = drv;
799f1f23 749 d->focus = -1;
6f97dba0
AL		 750 chr->chr_write = mux_chr_write;
751 chr->chr_update_read_handler = mux_chr_update_read_handler;
752 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 753 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 754 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 755 if (drv->chr_add_watch) {
756 chr->chr_add_watch = mux_chr_add_watch;
757 }
7b7ab18d
MR		 758 /* only default to opened state if we've realized the initial
759 * set of muxes
760 */
761 chr->explicit_be_open = muxes_realized ? 0 : 1;
762 chr->is_mux = 1;
73cdf3f2 763
6f97dba0
AL		 764 return chr;
765}
766
767
96c63847
AL		 768typedef struct IOWatchPoll
769{
d185c094
PB		 770 GSource parent;
771
9894dc0c 772 QIOChannel *ioc;
96c63847 773 GSource *src;
96c63847
AL		 774
775 IOCanReadHandler *fd_can_read;
1e885b25 776 GSourceFunc fd_read;
96c63847 777 void *opaque;
96c63847
AL		 778} IOWatchPoll;
779
96c63847
AL		 780static IOWatchPoll *io_watch_poll_from_source(GSource *source)
781{
d185c094 782 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 783}
784
785static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
786{
787 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 788 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 789 bool was_active = iwp->src != NULL;
d185c094 790 if (was_active == now_active) {
96c63847
AL		 791 return FALSE;
792 }
793
d185c094 794 if (now_active) {
9894dc0c
DB		 795 iwp->src = qio_channel_create_watch(
796 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 797 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 798 g_source_attach(iwp->src, NULL);
799 } else {
1e885b25
PB		 800 g_source_destroy(iwp->src);
801 g_source_unref(iwp->src);
802 iwp->src = NULL;
d185c094
PB		 803 }
804 return FALSE;
96c63847
AL		 805}
806
807static gboolean io_watch_poll_check(GSource *source)
808{
d185c094 809 return FALSE;
96c63847
AL		 810}
811
812static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
813 gpointer user_data)
814{
d185c094 815 abort();
96c63847
AL		 816}
817
818static void io_watch_poll_finalize(GSource *source)
819{
2b316774
PB		 820 /* Due to a glib bug, removing the last reference to a source
821 * inside a finalize callback causes recursive locking (and a
822 * deadlock). This is not a problem inside other callbacks,
823 * including dispatch callbacks, so we call io_remove_watch_poll
824 * to remove this source. At this point, iwp->src must
825 * be NULL, or we would leak it.
826 *
827 * This would be solved much more elegantly by child sources,
828 * but we support older glib versions that do not have them.
829 */
96c63847 830 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 831 assert(iwp->src == NULL);
96c63847
AL		 832}
833
834static GSourceFuncs io_watch_poll_funcs = {
835 .prepare = io_watch_poll_prepare,
836 .check = io_watch_poll_check,
837 .dispatch = io_watch_poll_dispatch,
838 .finalize = io_watch_poll_finalize,
839};
840
841/* Can only be used for read */
9894dc0c 842static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 843 IOCanReadHandler *fd_can_read,
9894dc0c 844 QIOChannelFunc fd_read,
96c63847
AL		 845 gpointer user_data)
846{
847 IOWatchPoll *iwp;
0ca5aa4f 848 int tag;
96c63847 849
d185c094 850 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 851 iwp->fd_can_read = fd_can_read;
852 iwp->opaque = user_data;
9894dc0c 853 iwp->ioc = ioc;
1e885b25
PB		 854 iwp->fd_read = (GSourceFunc) fd_read;
855 iwp->src = NULL;
96c63847 856
0ca5aa4f
PB		 857 tag = g_source_attach(&iwp->parent, NULL);
858 g_source_unref(&iwp->parent);
859 return tag;
96c63847
AL		 860}
861
2b316774
PB		 862static void io_remove_watch_poll(guint tag)
863{
864 GSource *source;
865 IOWatchPoll *iwp;
866
867 g_return_if_fail (tag > 0);
868
869 source = g_main_context_find_source_by_id(NULL, tag);
870 g_return_if_fail (source != NULL);
871
872 iwp = io_watch_poll_from_source(source);
873 if (iwp->src) {
874 g_source_destroy(iwp->src);
875 g_source_unref(iwp->src);
876 iwp->src = NULL;
877 }
878 g_source_destroy(&iwp->parent);
879}
880
26da70c7
AS		 881static void remove_fd_in_watch(CharDriverState *chr)
882{
883 if (chr->fd_in_tag) {
884 io_remove_watch_poll(chr->fd_in_tag);
885 chr->fd_in_tag = 0;
886 }
887}
888
96c63847 889
9894dc0c
DB		 890static int io_channel_send_full(QIOChannel *ioc,
891 const void *buf, size_t len,
892 int *fds, size_t nfds)
76a9644b 893{
9894dc0c 894 size_t offset = 0;
76a9644b 895
9894dc0c
DB		 896 while (offset < len) {
897 ssize_t ret = 0;
898 struct iovec iov = { .iov_base = (char *)buf + offset,
899 .iov_len = len - offset };
900
901 ret = qio_channel_writev_full(
902 ioc, &iov, 1,
903 fds, nfds, NULL);
904 if (ret == QIO_CHANNEL_ERR_BLOCK) {
905 errno = EAGAIN;
906 return -1;
907 } else if (ret < 0) {
908 if (offset) {
909 return offset;
910 }
76a9644b 911
9894dc0c
DB		 912 errno = EINVAL;
913 return -1;
914 }
76a9644b 915
9894dc0c
DB		 916 offset += ret;
917 }
76a9644b 918
9894dc0c 919 return offset;
76a9644b
AL		 920}
921
9894dc0c 922
0ff0fad2 923#ifndef _WIN32
9894dc0c 924static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 925{
9894dc0c 926 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 927}
96c63847 928
44ab9ed4 929
a29753f8
AL		 930typedef struct FDCharDriver {
931 CharDriverState *chr;
9894dc0c 932 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 933 int max_size;
934} FDCharDriver;
935
9005b2a7 936/* Called with chr_write_lock held. */
6f97dba0
AL		 937static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
938{
939 FDCharDriver *s = chr->opaque;
a29753f8 940
9894dc0c 941 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 942}
943
9894dc0c 944static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 945{
946 CharDriverState *chr = opaque;
947 FDCharDriver *s = chr->opaque;
a29753f8 948 int len;
9bd7854e 949 uint8_t buf[READ_BUF_LEN];
9894dc0c 950 ssize_t ret;
6f97dba0
AL		 951
952 len = sizeof(buf);
a29753f8 953 if (len > s->max_size) {
6f97dba0 954 len = s->max_size;
a29753f8
AL		 955 }
956 if (len == 0) {
cdbf6e16 957 return TRUE;
a29753f8
AL		 958 }
959
9894dc0c
DB		 960 ret = qio_channel_read(
961 chan, (gchar *)buf, len, NULL);
962 if (ret == 0) {
26da70c7 963 remove_fd_in_watch(chr);
a425d23f 964 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 965 return FALSE;
6f97dba0 966 }
9894dc0c
DB		 967 if (ret > 0) {
968 qemu_chr_be_write(chr, buf, ret);
6f97dba0 969 }
a29753f8
AL		 970
971 return TRUE;
972}
973
974static int fd_chr_read_poll(void *opaque)
975{
976 CharDriverState *chr = opaque;
977 FDCharDriver *s = chr->opaque;
978
979 s->max_size = qemu_chr_be_can_write(chr);
980 return s->max_size;
6f97dba0
AL		 981}
982
23673ca7
AL		 983static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
984{
985 FDCharDriver *s = chr->opaque;
9894dc0c 986 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 987}
988
6f97dba0
AL		 989static void fd_chr_update_read_handler(CharDriverState *chr)
990{
991 FDCharDriver *s = chr->opaque;
992
26da70c7 993 remove_fd_in_watch(chr);
9894dc0c
DB		 994 if (s->ioc_in) {
995 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
996 fd_chr_read_poll,
7ba9addc 997 fd_chr_read, chr);
6f97dba0
AL		 998 }
999}
1000
1001static void fd_chr_close(struct CharDriverState *chr)
1002{
1003 FDCharDriver *s = chr->opaque;
1004
26da70c7 1005 remove_fd_in_watch(chr);
9894dc0c
DB		 1006 if (s->ioc_in) {
1007 object_unref(OBJECT(s->ioc_in));
a29753f8 1008 }
9894dc0c
DB		 1009 if (s->ioc_out) {
1010 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1011 }
1012
7267c094 1013 g_free(s);
a425d23f 1014 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1015}
1016
1017/* open a character device to a unix fd */
d0d7708b
DB		 1018static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1019 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1020{
1021 CharDriverState *chr;
1022 FDCharDriver *s;
1023
d0d7708b
DB		 1024 chr = qemu_chr_alloc(backend, errp);
1025 if (!chr) {
1026 return NULL;
1027 }
2d528d45 1028 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1029 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1030 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1031 qemu_set_nonblock(fd_out);
a29753f8 1032 s->chr = chr;
6f97dba0 1033 chr->opaque = s;
23673ca7 1034 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1035 chr->chr_write = fd_chr_write;
1036 chr->chr_update_read_handler = fd_chr_update_read_handler;
1037 chr->chr_close = fd_chr_close;
1038
6f97dba0
AL		 1039 return chr;
1040}
1041
20cbe7a2
PB		 1042static CharDriverState *qemu_chr_open_pipe(const char *id,
1043 ChardevBackend *backend,
1044 ChardevReturn *ret,
1045 Error **errp)
6f97dba0 1046{
130257dc 1047 ChardevHostdev *opts = backend->u.pipe;
6f97dba0 1048 int fd_in, fd_out;
0ff0fad2
DB		 1049 char *filename_in;
1050 char *filename_out;
548cbb36 1051 const char *filename = opts->device;
d0d7708b 1052 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.pipe);
7d31544f 1053
0ff0fad2
DB		 1054
1055 filename_in = g_strdup_printf("%s.in", filename);
1056 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1057 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1058 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1059 g_free(filename_in);
1060 g_free(filename_out);
6f97dba0
AL		 1061 if (fd_in < 0 || fd_out < 0) {
1062 if (fd_in >= 0)
1063 close(fd_in);
1064 if (fd_out >= 0)
1065 close(fd_out);
b181e047 1066 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1067 if (fd_in < 0) {
20cbe7a2 1068 error_setg_file_open(errp, errno, filename);
1f51470d 1069 return NULL;
a89dd6c3 1070 }
6f97dba0 1071 }
d0d7708b 1072 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1073}
1074
6f97dba0
AL		 1075/* init terminal so that we can grab keys */
1076static struct termios oldtty;
1077static int old_fd0_flags;
c88930a6 1078static bool stdio_in_use;
bb002513 1079static bool stdio_allow_signal;
e76d4420
GH		 1080static bool stdio_echo_state;
1081
1082static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1083
1084static void term_exit(void)
1085{
1086 tcsetattr (0, TCSANOW, &oldtty);
1087 fcntl(0, F_SETFL, old_fd0_flags);
1088}
1089
e76d4420
GH		 1090static void term_stdio_handler(int sig)
1091{
1092 /* restore echo after resume from suspend. */
1093 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1094}
1095
bb002513 1096static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1097{
1098 struct termios tty;
1099
e76d4420 1100 stdio_echo_state = echo;
0369364b 1101 tty = oldtty;
bb002513
PB		 1102 if (!echo) {
1103 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1104 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1105 tty.c_oflag |= OPOST;
1106 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1107 tty.c_cflag &= ~(CSIZE|PARENB);
1108 tty.c_cflag |= CS8;
1109 tty.c_cc[VMIN] = 1;
1110 tty.c_cc[VTIME] = 0;
1111 }
bb002513 1112 if (!stdio_allow_signal)
6f97dba0 1113 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1114
1115 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1116}
1117
1118static void qemu_chr_close_stdio(struct CharDriverState *chr)
1119{
1120 term_exit();
6f97dba0
AL		 1121 fd_chr_close(chr);
1122}
1123
8c84b25d
PB		 1124static CharDriverState *qemu_chr_open_stdio(const char *id,
1125 ChardevBackend *backend,
1126 ChardevReturn *ret,
1127 Error **errp)
6f97dba0 1128{
130257dc 1129 ChardevStdio *opts = backend->u.stdio;
6f97dba0 1130 CharDriverState *chr;
e76d4420 1131 struct sigaction act;
d0d7708b 1132 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
6f97dba0 1133
ab51b1d5 1134 if (is_daemonized()) {
8c84b25d 1135 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1136 return NULL;
1137 }
c88930a6
LL		 1138
1139 if (stdio_in_use) {
8c84b25d
PB		 1140 error_setg(errp, "cannot use stdio by multiple character devices");
1141 return NULL;
c88930a6
LL		 1142 }
1143
1144 stdio_in_use = true;
ed7a1540 1145 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1146 tcgetattr(0, &oldtty);
4ff12bdb 1147 qemu_set_nonblock(0);
ed7a1540 1148 atexit(term_exit);
0369364b 1149
e76d4420
GH		 1150 memset(&act, 0, sizeof(act));
1151 act.sa_handler = term_stdio_handler;
1152 sigaction(SIGCONT, &act, NULL);
1153
d0d7708b 1154 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1155 chr->chr_close = qemu_chr_close_stdio;
bb002513 1156 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1157 if (opts->has_signal) {
1158 stdio_allow_signal = opts->signal;
1159 }
15f31519 1160 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1161
1f51470d 1162 return chr;
6f97dba0
AL		 1163}
1164
6f97dba0 1165#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1166 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1167 || defined(__GLIBC__)
6f97dba0 1168
d809ab95
PB		 1169#define HAVE_CHARDEV_SERIAL 1
1170#define HAVE_CHARDEV_PTY 1
e551498e 1171
6f97dba0 1172typedef struct {
9894dc0c 1173 QIOChannel *ioc;
6f97dba0 1174 int read_bytes;
9005b2a7
PB		 1175
1176 /* Protected by the CharDriverState chr_write_lock. */
1177 int connected;
8aa33caf 1178 guint timer_tag;
7b3621f4 1179 guint open_tag;
6f97dba0
AL		 1180} PtyCharDriver;
1181
9005b2a7 1182static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1183static void pty_chr_state(CharDriverState *chr, int connected);
1184
8aa33caf
AL		 1185static gboolean pty_chr_timer(gpointer opaque)
1186{
1187 struct CharDriverState *chr = opaque;
1188 PtyCharDriver *s = chr->opaque;
1189
9005b2a7 1190 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1191 s->timer_tag = 0;
7b3621f4 1192 s->open_tag = 0;
b0d768c3
GH		 1193 if (!s->connected) {
1194 /* Next poll ... */
9005b2a7 1195 pty_chr_update_read_handler_locked(chr);
b0d768c3 1196 }
9005b2a7 1197 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1198 return FALSE;
1199}
1200
9005b2a7 1201/* Called with chr_write_lock held. */
8aa33caf
AL		 1202static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1203{
1204 PtyCharDriver *s = chr->opaque;
1205
1206 if (s->timer_tag) {
1207 g_source_remove(s->timer_tag);
1208 s->timer_tag = 0;
1209 }
1210
1211 if (ms == 1000) {
1212 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1213 } else {
1214 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1215 }
1216}
1217
9005b2a7
PB		 1218/* Called with chr_write_lock held. */
1219static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1220{
1221 PtyCharDriver *s = chr->opaque;
1222 GPollFD pfd;
c1f24489 1223 int rc;
9894dc0c 1224 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1225
9894dc0c 1226 pfd.fd = fioc->fd;
1bb7fe72
PB		 1227 pfd.events = G_IO_OUT;
1228 pfd.revents = 0;
c1f24489
PB		 1229 do {
1230 rc = g_poll(&pfd, 1, 0);
1231 } while (rc == -1 && errno == EINTR);
1232 assert(rc >= 0);
1233
1bb7fe72
PB		 1234 if (pfd.revents & G_IO_HUP) {
1235 pty_chr_state(chr, 0);
1236 } else {
1237 pty_chr_state(chr, 1);
1238 }
1239}
1240
9005b2a7
PB		 1241static void pty_chr_update_read_handler(CharDriverState *chr)
1242{
1243 qemu_mutex_lock(&chr->chr_write_lock);
1244 pty_chr_update_read_handler_locked(chr);
1245 qemu_mutex_unlock(&chr->chr_write_lock);
1246}
1247
1248/* Called with chr_write_lock held. */
6f97dba0
AL		 1249static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1250{
1251 PtyCharDriver *s = chr->opaque;
1252
1253 if (!s->connected) {
1254 /* guest sends data, check for (re-)connect */
9005b2a7 1255 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1256 if (!s->connected) {
1257 return 0;
1258 }
6f97dba0 1259 }
9894dc0c 1260 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1261}
1262
e6a87ed8
AL		 1263static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1264{
1265 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1266 if (!s->connected) {
1267 return NULL;
1268 }
9894dc0c 1269 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1270}
1271
6f97dba0
AL		 1272static int pty_chr_read_poll(void *opaque)
1273{
1274 CharDriverState *chr = opaque;
1275 PtyCharDriver *s = chr->opaque;
1276
909cda12 1277 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1278 return s->read_bytes;
1279}
1280
9894dc0c 1281static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1282{
1283 CharDriverState *chr = opaque;
1284 PtyCharDriver *s = chr->opaque;
9894dc0c 1285 gsize len;
9bd7854e 1286 uint8_t buf[READ_BUF_LEN];
9894dc0c 1287 ssize_t ret;
6f97dba0
AL		 1288
1289 len = sizeof(buf);
1290 if (len > s->read_bytes)
1291 len = s->read_bytes;
cdbf6e16
PB		 1292 if (len == 0) {
1293 return TRUE;
1294 }
9894dc0c
DB		 1295 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1296 if (ret <= 0) {
6f97dba0 1297 pty_chr_state(chr, 0);
093d3a20
AL		 1298 return FALSE;
1299 } else {
6f97dba0 1300 pty_chr_state(chr, 1);
9894dc0c 1301 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1302 }
093d3a20 1303 return TRUE;
6f97dba0
AL		 1304}
1305
7b3621f4
PB		 1306static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1307{
1308 CharDriverState *chr = opaque;
1309 PtyCharDriver *s = chr->opaque;
1310
1311 s->open_tag = 0;
1312 qemu_chr_be_generic_open(chr);
1313 return FALSE;
1314}
1315
9005b2a7 1316/* Called with chr_write_lock held. */
6f97dba0
AL		 1317static void pty_chr_state(CharDriverState *chr, int connected)
1318{
1319 PtyCharDriver *s = chr->opaque;
1320
1321 if (!connected) {
7b3621f4
PB		 1322 if (s->open_tag) {
1323 g_source_remove(s->open_tag);
1324 s->open_tag = 0;
1325 }
26da70c7 1326 remove_fd_in_watch(chr);
6f97dba0 1327 s->connected = 0;
6f97dba0
AL		 1328 /* (re-)connect poll interval for idle guests: once per second.
1329 * We check more frequently in case the guests sends data to
1330 * the virtual device linked to our pty. */
8aa33caf 1331 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1332 } else {
85a67692
PB		 1333 if (s->timer_tag) {
1334 g_source_remove(s->timer_tag);
1335 s->timer_tag = 0;
1336 }
1337 if (!s->connected) {
7b3621f4 1338 g_assert(s->open_tag == 0);
85a67692 1339 s->connected = 1;
7b3621f4 1340 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1341 }
1342 if (!chr->fd_in_tag) {
9894dc0c
DB		 1343 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1344 pty_chr_read_poll,
7ba9addc 1345 pty_chr_read, chr);
85a67692 1346 }
6f97dba0
AL		 1347 }
1348}
1349
6f97dba0
AL		 1350static void pty_chr_close(struct CharDriverState *chr)
1351{
1352 PtyCharDriver *s = chr->opaque;
1353
7b3621f4
PB		 1354 qemu_mutex_lock(&chr->chr_write_lock);
1355 pty_chr_state(chr, 0);
9894dc0c 1356 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1357 if (s->timer_tag) {
1358 g_source_remove(s->timer_tag);
910b6368 1359 s->timer_tag = 0;
8aa33caf 1360 }
7b3621f4 1361 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1362 g_free(s);
a425d23f 1363 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1364}
1365
e68c5958 1366static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1367 ChardevBackend *backend,
1368 ChardevReturn *ret,
1369 Error **errp)
6f97dba0
AL		 1370{
1371 CharDriverState *chr;
1372 PtyCharDriver *s;
e68c5958 1373 int master_fd, slave_fd;
6f97dba0 1374 char pty_name[PATH_MAX];
d0d7708b 1375 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.pty);
6f97dba0 1376
4efeabbb
MT		 1377 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1378 if (master_fd < 0) {
c2e75a43 1379 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1380 return NULL;
6f97dba0
AL		 1381 }
1382
6f97dba0 1383 close(slave_fd);
fac6688a 1384 qemu_set_nonblock(master_fd);
6f97dba0 1385
d0d7708b
DB		 1386 chr = qemu_chr_alloc(common, errp);
1387 if (!chr) {
1388 close(master_fd);
1389 return NULL;
1390 }
a4e26048 1391
4efeabbb
MT		 1392 chr->filename = g_strdup_printf("pty:%s", pty_name);
1393 ret->pty = g_strdup(pty_name);
e68c5958 1394 ret->has_pty = true;
58650218 1395
e68c5958 1396 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1397 pty_name, id);
6f97dba0 1398
2d528d45 1399 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1400 chr->opaque = s;
1401 chr->chr_write = pty_chr_write;
1402 chr->chr_update_read_handler = pty_chr_update_read_handler;
1403 chr->chr_close = pty_chr_close;
e6a87ed8 1404 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1405 chr->explicit_be_open = true;
6f97dba0 1406
9894dc0c 1407 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1408 s->timer_tag = 0;
6f97dba0 1409
1f51470d 1410 return chr;
6f97dba0
AL		 1411}
1412
1413static void tty_serial_init(int fd, int speed,
1414 int parity, int data_bits, int stop_bits)
1415{
1416 struct termios tty;
1417 speed_t spd;
1418
1419#if 0
1420 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1421 speed, parity, data_bits, stop_bits);
1422#endif
1423 tcgetattr (fd, &tty);
1424
45eea13b
SW		 1425#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1426 speed = speed * 10 / 11;
1427 do {
1428 check_speed(50);
1429 check_speed(75);
1430 check_speed(110);
1431 check_speed(134);
1432 check_speed(150);
1433 check_speed(200);
1434 check_speed(300);
1435 check_speed(600);
1436 check_speed(1200);
1437 check_speed(1800);
1438 check_speed(2400);
1439 check_speed(4800);
1440 check_speed(9600);
1441 check_speed(19200);
1442 check_speed(38400);
1443 /* Non-Posix values follow. They may be unsupported on some systems. */
1444 check_speed(57600);
1445 check_speed(115200);
1446#ifdef B230400
1447 check_speed(230400);
1448#endif
1449#ifdef B460800
1450 check_speed(460800);
1451#endif
1452#ifdef B500000
1453 check_speed(500000);
1454#endif
1455#ifdef B576000
1456 check_speed(576000);
1457#endif
1458#ifdef B921600
1459 check_speed(921600);
1460#endif
1461#ifdef B1000000
1462 check_speed(1000000);
1463#endif
1464#ifdef B1152000
1465 check_speed(1152000);
1466#endif
1467#ifdef B1500000
1468 check_speed(1500000);
1469#endif
1470#ifdef B2000000
1471 check_speed(2000000);
1472#endif
1473#ifdef B2500000
1474 check_speed(2500000);
1475#endif
1476#ifdef B3000000
1477 check_speed(3000000);
1478#endif
1479#ifdef B3500000
1480 check_speed(3500000);
1481#endif
1482#ifdef B4000000
1483 check_speed(4000000);
1484#endif
6f97dba0 1485 spd = B115200;
45eea13b 1486 } while (0);
6f97dba0
AL		 1487
1488 cfsetispeed(&tty, spd);
1489 cfsetospeed(&tty, spd);
1490
1491 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1492 |INLCR|IGNCR|ICRNL|IXON);
1493 tty.c_oflag |= OPOST;
1494 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1495 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1496 switch(data_bits) {
1497 default:
1498 case 8:
1499 tty.c_cflag |= CS8;
1500 break;
1501 case 7:
1502 tty.c_cflag |= CS7;
1503 break;
1504 case 6:
1505 tty.c_cflag |= CS6;
1506 break;
1507 case 5:
1508 tty.c_cflag |= CS5;
1509 break;
1510 }
1511 switch(parity) {
1512 default:
1513 case 'N':
1514 break;
1515 case 'E':
1516 tty.c_cflag |= PARENB;
1517 break;
1518 case 'O':
1519 tty.c_cflag |= PARENB | PARODD;
1520 break;
1521 }
1522 if (stop_bits == 2)
1523 tty.c_cflag |= CSTOPB;
1524
1525 tcsetattr (fd, TCSANOW, &tty);
1526}
1527
1528static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1529{
1530 FDCharDriver *s = chr->opaque;
9894dc0c 1531 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1532
1533 switch(cmd) {
1534 case CHR_IOCTL_SERIAL_SET_PARAMS:
1535 {
1536 QEMUSerialSetParams *ssp = arg;
9894dc0c 1537 tty_serial_init(fioc->fd,
a29753f8 1538 ssp->speed, ssp->parity,
6f97dba0
AL		 1539 ssp->data_bits, ssp->stop_bits);
1540 }
1541 break;
1542 case CHR_IOCTL_SERIAL_SET_BREAK:
1543 {
1544 int enable = *(int *)arg;
a29753f8 1545 if (enable) {
9894dc0c 1546 tcsendbreak(fioc->fd, 1);
a29753f8 1547 }
6f97dba0
AL		 1548 }
1549 break;
1550 case CHR_IOCTL_SERIAL_GET_TIOCM:
1551 {
1552 int sarg = 0;
1553 int *targ = (int *)arg;
9894dc0c 1554 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1555 *targ = 0;
b4abdfa4 1556 if (sarg & TIOCM_CTS)
6f97dba0 1557 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1558 if (sarg & TIOCM_CAR)
6f97dba0 1559 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1560 if (sarg & TIOCM_DSR)
6f97dba0 1561 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1562 if (sarg & TIOCM_RI)
6f97dba0 1563 *targ |= CHR_TIOCM_RI;
b4abdfa4 1564 if (sarg & TIOCM_DTR)
6f97dba0 1565 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1566 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1567 *targ |= CHR_TIOCM_RTS;
1568 }
1569 break;
1570 case CHR_IOCTL_SERIAL_SET_TIOCM:
1571 {
1572 int sarg = *(int *)arg;
1573 int targ = 0;
9894dc0c 1574 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1575 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1576 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1577 if (sarg & CHR_TIOCM_CTS)
1578 targ |= TIOCM_CTS;
1579 if (sarg & CHR_TIOCM_CAR)
1580 targ |= TIOCM_CAR;
1581 if (sarg & CHR_TIOCM_DSR)
1582 targ |= TIOCM_DSR;
1583 if (sarg & CHR_TIOCM_RI)
1584 targ |= TIOCM_RI;
1585 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1586 targ |= TIOCM_DTR;
b4abdfa4 1587 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1588 targ |= TIOCM_RTS;
9894dc0c 1589 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1590 }
1591 break;
1592 default:
1593 return -ENOTSUP;
1594 }
1595 return 0;
1596}
1597
4266a134
DA		 1598static void qemu_chr_close_tty(CharDriverState *chr)
1599{
4266a134 1600 fd_chr_close(chr);
4266a134
DA		 1601}
1602
d0d7708b
DB		 1603static CharDriverState *qemu_chr_open_tty_fd(int fd,
1604 ChardevCommon *backend,
1605 Error **errp)
d59044ef
GH		 1606{
1607 CharDriverState *chr;
1608
1609 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1610 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1611 chr->chr_ioctl = tty_serial_ioctl;
1612 chr->chr_close = qemu_chr_close_tty;
1613 return chr;
1614}
6f97dba0
AL		 1615#endif /* __linux__ || __sun__ */
1616
1617#if defined(__linux__)
e551498e
GH		 1618
1619#define HAVE_CHARDEV_PARPORT 1
1620
6f97dba0
AL		 1621typedef struct {
1622 int fd;
1623 int mode;
1624} ParallelCharDriver;
1625
1626static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1627{
1628 if (s->mode != mode) {
1629 int m = mode;
1630 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1631 return 0;
1632 s->mode = mode;
1633 }
1634 return 1;
1635}
1636
1637static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1638{
1639 ParallelCharDriver *drv = chr->opaque;
1640 int fd = drv->fd;
1641 uint8_t b;
1642
1643 switch(cmd) {
1644 case CHR_IOCTL_PP_READ_DATA:
1645 if (ioctl(fd, PPRDATA, &b) < 0)
1646 return -ENOTSUP;
1647 *(uint8_t *)arg = b;
1648 break;
1649 case CHR_IOCTL_PP_WRITE_DATA:
1650 b = *(uint8_t *)arg;
1651 if (ioctl(fd, PPWDATA, &b) < 0)
1652 return -ENOTSUP;
1653 break;
1654 case CHR_IOCTL_PP_READ_CONTROL:
1655 if (ioctl(fd, PPRCONTROL, &b) < 0)
1656 return -ENOTSUP;
1657 /* Linux gives only the lowest bits, and no way to know data
1658 direction! For better compatibility set the fixed upper
1659 bits. */
1660 *(uint8_t *)arg = b | 0xc0;
1661 break;
1662 case CHR_IOCTL_PP_WRITE_CONTROL:
1663 b = *(uint8_t *)arg;
1664 if (ioctl(fd, PPWCONTROL, &b) < 0)
1665 return -ENOTSUP;
1666 break;
1667 case CHR_IOCTL_PP_READ_STATUS:
1668 if (ioctl(fd, PPRSTATUS, &b) < 0)
1669 return -ENOTSUP;
1670 *(uint8_t *)arg = b;
1671 break;
1672 case CHR_IOCTL_PP_DATA_DIR:
1673 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1674 return -ENOTSUP;
1675 break;
1676 case CHR_IOCTL_PP_EPP_READ_ADDR:
1677 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1678 struct ParallelIOArg *parg = arg;
1679 int n = read(fd, parg->buffer, parg->count);
1680 if (n != parg->count) {
1681 return -EIO;
1682 }
1683 }
1684 break;
1685 case CHR_IOCTL_PP_EPP_READ:
1686 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1687 struct ParallelIOArg *parg = arg;
1688 int n = read(fd, parg->buffer, parg->count);
1689 if (n != parg->count) {
1690 return -EIO;
1691 }
1692 }
1693 break;
1694 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1695 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1696 struct ParallelIOArg *parg = arg;
1697 int n = write(fd, parg->buffer, parg->count);
1698 if (n != parg->count) {
1699 return -EIO;
1700 }
1701 }
1702 break;
1703 case CHR_IOCTL_PP_EPP_WRITE:
1704 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1705 struct ParallelIOArg *parg = arg;
1706 int n = write(fd, parg->buffer, parg->count);
1707 if (n != parg->count) {
1708 return -EIO;
1709 }
1710 }
1711 break;
1712 default:
1713 return -ENOTSUP;
1714 }
1715 return 0;
1716}
1717
1718static void pp_close(CharDriverState *chr)
1719{
1720 ParallelCharDriver *drv = chr->opaque;
1721 int fd = drv->fd;
1722
1723 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1724 ioctl(fd, PPRELEASE);
1725 close(fd);
7267c094 1726 g_free(drv);
a425d23f 1727 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1728}
1729
d0d7708b
DB		 1730static CharDriverState *qemu_chr_open_pp_fd(int fd,
1731 ChardevCommon *backend,
1732 Error **errp)
6f97dba0
AL		 1733{
1734 CharDriverState *chr;
1735 ParallelCharDriver *drv;
6f97dba0
AL		 1736
1737 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1738 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1739 close(fd);
1f51470d 1740 return NULL;
6f97dba0
AL		 1741 }
1742
2d528d45 1743 drv = g_new0(ParallelCharDriver, 1);
6f97dba0
AL		 1744 drv->fd = fd;
1745 drv->mode = IEEE1284_MODE_COMPAT;
1746
d0d7708b
DB		 1747 chr = qemu_chr_alloc(backend, errp);
1748 if (!chr) {
1749 return NULL;
1750 }
6f97dba0
AL		 1751 chr->chr_write = null_chr_write;
1752 chr->chr_ioctl = pp_ioctl;
1753 chr->chr_close = pp_close;
1754 chr->opaque = drv;
1755
1f51470d 1756 return chr;
6f97dba0
AL		 1757}
1758#endif /* __linux__ */
1759
a167ba50 1760#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1761
1762#define HAVE_CHARDEV_PARPORT 1
1763
6972f935
BS		 1764static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1765{
e0efb993 1766 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1767 uint8_t b;
1768
1769 switch(cmd) {
1770 case CHR_IOCTL_PP_READ_DATA:
1771 if (ioctl(fd, PPIGDATA, &b) < 0)
1772 return -ENOTSUP;
1773 *(uint8_t *)arg = b;
1774 break;
1775 case CHR_IOCTL_PP_WRITE_DATA:
1776 b = *(uint8_t *)arg;
1777 if (ioctl(fd, PPISDATA, &b) < 0)
1778 return -ENOTSUP;
1779 break;
1780 case CHR_IOCTL_PP_READ_CONTROL:
1781 if (ioctl(fd, PPIGCTRL, &b) < 0)
1782 return -ENOTSUP;
1783 *(uint8_t *)arg = b;
1784 break;
1785 case CHR_IOCTL_PP_WRITE_CONTROL:
1786 b = *(uint8_t *)arg;
1787 if (ioctl(fd, PPISCTRL, &b) < 0)
1788 return -ENOTSUP;
1789 break;
1790 case CHR_IOCTL_PP_READ_STATUS:
1791 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1792 return -ENOTSUP;
1793 *(uint8_t *)arg = b;
1794 break;
1795 default:
1796 return -ENOTSUP;
1797 }
1798 return 0;
1799}
1800
d0d7708b
DB		 1801static CharDriverState *qemu_chr_open_pp_fd(int fd,
1802 ChardevBackend *backend,
1803 Error **errp)
6972f935
BS		 1804{
1805 CharDriverState *chr;
6972f935 1806
d0d7708b
DB		 1807 chr = qemu_chr_alloc(common, errp);
1808 if (!chr) {
1809 return NULL;
1810 }
e0efb993 1811 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1812 chr->chr_write = null_chr_write;
1813 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1814 chr->explicit_be_open = true;
1f51470d 1815 return chr;
6972f935
BS		 1816}
1817#endif
1818
6f97dba0
AL		 1819#else /* _WIN32 */
1820
d809ab95
PB		 1821#define HAVE_CHARDEV_SERIAL 1
1822
6f97dba0
AL		 1823typedef struct {
1824 int max_size;
1825 HANDLE hcom, hrecv, hsend;
9005b2a7 1826 OVERLAPPED orecv;
6f97dba0
AL		 1827 BOOL fpipe;
1828 DWORD len;
9005b2a7
PB		 1829
1830 /* Protected by the CharDriverState chr_write_lock. */
1831 OVERLAPPED osend;
6f97dba0
AL		 1832} WinCharState;
1833
db418a0a
FC		 1834typedef struct {
1835 HANDLE hStdIn;
1836 HANDLE hInputReadyEvent;
1837 HANDLE hInputDoneEvent;
1838 HANDLE hInputThread;
1839 uint8_t win_stdio_buf;
1840} WinStdioCharState;
1841
6f97dba0
AL		 1842#define NSENDBUF 2048
1843#define NRECVBUF 2048
1844#define MAXCONNECT 1
1845#define NTIMEOUT 5000
1846
1847static int win_chr_poll(void *opaque);
1848static int win_chr_pipe_poll(void *opaque);
1849
1850static void win_chr_close(CharDriverState *chr)
1851{
1852 WinCharState *s = chr->opaque;
1853
1854 if (s->hsend) {
1855 CloseHandle(s->hsend);
1856 s->hsend = NULL;
1857 }
1858 if (s->hrecv) {
1859 CloseHandle(s->hrecv);
1860 s->hrecv = NULL;
1861 }
1862 if (s->hcom) {
1863 CloseHandle(s->hcom);
1864 s->hcom = NULL;
1865 }
1866 if (s->fpipe)
1867 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1868 else
1869 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1870
a425d23f 1871 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1872}
1873
6511d396 1874static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1875{
1876 WinCharState *s = chr->opaque;
1877 COMMCONFIG comcfg;
1878 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1879 COMSTAT comstat;
1880 DWORD size;
1881 DWORD err;
1882
1883 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1884 if (!s->hsend) {
6511d396 1885 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1886 goto fail;
1887 }
1888 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1889 if (!s->hrecv) {
6511d396 1890 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1891 goto fail;
1892 }
1893
1894 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1895 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1896 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1897 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1898 s->hcom = NULL;
1899 goto fail;
1900 }
1901
1902 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1903 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1904 goto fail;
1905 }
1906
1907 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1908 size = sizeof(COMMCONFIG);
1909 GetDefaultCommConfig(filename, &comcfg, &size);
1910 comcfg.dcb.DCBlength = sizeof(DCB);
1911 CommConfigDialog(filename, NULL, &comcfg);
1912
1913 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1914 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1915 goto fail;
1916 }
1917
1918 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1919 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1920 goto fail;
1921 }
1922
1923 cto.ReadIntervalTimeout = MAXDWORD;
1924 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1925 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1926 goto fail;
1927 }
1928
1929 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 1930 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 1931 goto fail;
1932 }
1933 qemu_add_polling_cb(win_chr_poll, chr);
1934 return 0;
1935
1936 fail:
1937 win_chr_close(chr);
1938 return -1;
1939}
1940
9005b2a7 1941/* Called with chr_write_lock held. */
6f97dba0
AL		 1942static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1943{
1944 WinCharState *s = chr->opaque;
1945 DWORD len, ret, size, err;
1946
1947 len = len1;
1948 ZeroMemory(&s->osend, sizeof(s->osend));
1949 s->osend.hEvent = s->hsend;
1950 while (len > 0) {
1951 if (s->hsend)
1952 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1953 else
1954 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1955 if (!ret) {
1956 err = GetLastError();
1957 if (err == ERROR_IO_PENDING) {
1958 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1959 if (ret) {
1960 buf += size;
1961 len -= size;
1962 } else {
1963 break;
1964 }
1965 } else {
1966 break;
1967 }
1968 } else {
1969 buf += size;
1970 len -= size;
1971 }
1972 }
1973 return len1 - len;
1974}
1975
1976static int win_chr_read_poll(CharDriverState *chr)
1977{
1978 WinCharState *s = chr->opaque;
1979
909cda12 1980 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1981 return s->max_size;
1982}
1983
1984static void win_chr_readfile(CharDriverState *chr)
1985{
1986 WinCharState *s = chr->opaque;
1987 int ret, err;
9bd7854e 1988 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1989 DWORD size;
1990
1991 ZeroMemory(&s->orecv, sizeof(s->orecv));
1992 s->orecv.hEvent = s->hrecv;
1993 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1994 if (!ret) {
1995 err = GetLastError();
1996 if (err == ERROR_IO_PENDING) {
1997 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1998 }
1999 }
2000
2001 if (size > 0) {
fa5efccb 2002 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2003 }
2004}
2005
2006static void win_chr_read(CharDriverState *chr)
2007{
2008 WinCharState *s = chr->opaque;
2009
2010 if (s->len > s->max_size)
2011 s->len = s->max_size;
2012 if (s->len == 0)
2013 return;
2014
2015 win_chr_readfile(chr);
2016}
2017
2018static int win_chr_poll(void *opaque)
2019{
2020 CharDriverState *chr = opaque;
2021 WinCharState *s = chr->opaque;
2022 COMSTAT status;
2023 DWORD comerr;
2024
2025 ClearCommError(s->hcom, &comerr, &status);
2026 if (status.cbInQue > 0) {
2027 s->len = status.cbInQue;
2028 win_chr_read_poll(chr);
2029 win_chr_read(chr);
2030 return 1;
2031 }
2032 return 0;
2033}
2034
6511d396 2035static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2036 ChardevCommon *backend,
6511d396 2037 Error **errp)
6f97dba0
AL		 2038{
2039 CharDriverState *chr;
2040 WinCharState *s;
2041
d0d7708b
DB		 2042 chr = qemu_chr_alloc(backend, errp);
2043 if (!chr) {
2044 return NULL;
2045 }
2d528d45 2046 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2047 chr->opaque = s;
2048 chr->chr_write = win_chr_write;
2049 chr->chr_close = win_chr_close;
2050
6511d396 2051 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2052 g_free(s);
d0d7708b 2053 qemu_chr_free_common(chr);
1f51470d 2054 return NULL;
6f97dba0 2055 }
1f51470d 2056 return chr;
6f97dba0
AL		 2057}
2058
2059static int win_chr_pipe_poll(void *opaque)
2060{
2061 CharDriverState *chr = opaque;
2062 WinCharState *s = chr->opaque;
2063 DWORD size;
2064
2065 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2066 if (size > 0) {
2067 s->len = size;
2068 win_chr_read_poll(chr);
2069 win_chr_read(chr);
2070 return 1;
2071 }
2072 return 0;
2073}
2074
20cbe7a2
PB		 2075static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2076 Error **errp)
6f97dba0
AL		 2077{
2078 WinCharState *s = chr->opaque;
2079 OVERLAPPED ov;
2080 int ret;
2081 DWORD size;
0ff0fad2 2082 char *openname;
6f97dba0
AL		 2083
2084 s->fpipe = TRUE;
2085
2086 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2087 if (!s->hsend) {
20cbe7a2 2088 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2089 goto fail;
2090 }
2091 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2092 if (!s->hrecv) {
20cbe7a2 2093 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2094 goto fail;
2095 }
2096
0ff0fad2 2097 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2098 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2099 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2100 PIPE_WAIT,
2101 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2102 g_free(openname);
6f97dba0 2103 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2104 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2105 s->hcom = NULL;
2106 goto fail;
2107 }
2108
2109 ZeroMemory(&ov, sizeof(ov));
2110 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2111 ret = ConnectNamedPipe(s->hcom, &ov);
2112 if (ret) {
20cbe7a2 2113 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2114 goto fail;
2115 }
2116
2117 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2118 if (!ret) {
20cbe7a2 2119 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2120 if (ov.hEvent) {
2121 CloseHandle(ov.hEvent);
2122 ov.hEvent = NULL;
2123 }
2124 goto fail;
2125 }
2126
2127 if (ov.hEvent) {
2128 CloseHandle(ov.hEvent);
2129 ov.hEvent = NULL;
2130 }
2131 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2132 return 0;
2133
2134 fail:
2135 win_chr_close(chr);
2136 return -1;
2137}
2138
2139
20cbe7a2
PB		 2140static CharDriverState *qemu_chr_open_pipe(const char *id,
2141 ChardevBackend *backend,
2142 ChardevReturn *ret,
2143 Error **errp)
6f97dba0 2144{
130257dc 2145 ChardevHostdev *opts = backend->u.pipe;
548cbb36 2146 const char *filename = opts->device;
6f97dba0
AL		 2147 CharDriverState *chr;
2148 WinCharState *s;
d0d7708b 2149 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.pipe);
6f97dba0 2150
d0d7708b
DB		 2151 chr = qemu_chr_alloc(common, errp);
2152 if (!chr) {
2153 return NULL;
2154 }
2d528d45 2155 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2156 chr->opaque = s;
2157 chr->chr_write = win_chr_write;
2158 chr->chr_close = win_chr_close;
2159
20cbe7a2 2160 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2161 g_free(s);
d0d7708b 2162 qemu_chr_free_common(chr);
1f51470d 2163 return NULL;
6f97dba0 2164 }
1f51470d 2165 return chr;
6f97dba0
AL		 2166}
2167
d0d7708b
DB		 2168static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2169 ChardevCommon *backend,
2170 Error **errp)
6f97dba0
AL		 2171{
2172 CharDriverState *chr;
2173 WinCharState *s;
2174
d0d7708b
DB		 2175 chr = qemu_chr_alloc(backend, errp);
2176 if (!chr) {
2177 return NULL;
2178 }
2d528d45 2179 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2180 s->hcom = fd_out;
2181 chr->opaque = s;
2182 chr->chr_write = win_chr_write;
1f51470d 2183 return chr;
6f97dba0
AL		 2184}
2185
122e5ed4
PB		 2186static CharDriverState *qemu_chr_open_win_con(const char *id,
2187 ChardevBackend *backend,
2188 ChardevReturn *ret,
2189 Error **errp)
6f97dba0 2190{
d0d7708b
DB		 2191 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.console);
2192 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2193 common, errp);
6f97dba0
AL		 2194}
2195
db418a0a
FC		 2196static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2197{
2198 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2199 DWORD dwSize;
2200 int len1;
2201
2202 len1 = len;
2203
2204 while (len1 > 0) {
2205 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2206 break;
2207 }
2208 buf += dwSize;
2209 len1 -= dwSize;
2210 }
2211
2212 return len - len1;
2213}
2214
2215static void win_stdio_wait_func(void *opaque)
2216{
2217 CharDriverState *chr = opaque;
2218 WinStdioCharState *stdio = chr->opaque;
2219 INPUT_RECORD buf[4];
2220 int ret;
2221 DWORD dwSize;
2222 int i;
2223
dff7424d 2224 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2225
2226 if (!ret) {
2227 /* Avoid error storm */
2228 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2229 return;
2230 }
2231
2232 for (i = 0; i < dwSize; i++) {
2233 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2234
2235 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2236 int j;
2237 if (kev->uChar.AsciiChar != 0) {
2238 for (j = 0; j < kev->wRepeatCount; j++) {
2239 if (qemu_chr_be_can_write(chr)) {
2240 uint8_t c = kev->uChar.AsciiChar;
2241 qemu_chr_be_write(chr, &c, 1);
2242 }
2243 }
2244 }
2245 }
2246 }
2247}
2248
2249static DWORD WINAPI win_stdio_thread(LPVOID param)
2250{
2251 CharDriverState *chr = param;
2252 WinStdioCharState *stdio = chr->opaque;
2253 int ret;
2254 DWORD dwSize;
2255
2256 while (1) {
2257
2258 /* Wait for one byte */
2259 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2260
2261 /* Exit in case of error, continue if nothing read */
2262 if (!ret) {
2263 break;
2264 }
2265 if (!dwSize) {
2266 continue;
2267 }
2268
2269 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2270 if (stdio->win_stdio_buf == '\r') {
2271 continue;
2272 }
2273
2274 /* Signal the main thread and wait until the byte was eaten */
2275 if (!SetEvent(stdio->hInputReadyEvent)) {
2276 break;
2277 }
2278 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2279 != WAIT_OBJECT_0) {
2280 break;
2281 }
2282 }
2283
2284 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2285 return 0;
2286}
2287
2288static void win_stdio_thread_wait_func(void *opaque)
2289{
2290 CharDriverState *chr = opaque;
2291 WinStdioCharState *stdio = chr->opaque;
2292
2293 if (qemu_chr_be_can_write(chr)) {
2294 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2295 }
2296
2297 SetEvent(stdio->hInputDoneEvent);
2298}
2299
2300static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2301{
2302 WinStdioCharState *stdio = chr->opaque;
2303 DWORD dwMode = 0;
2304
2305 GetConsoleMode(stdio->hStdIn, &dwMode);
2306
2307 if (echo) {
2308 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2309 } else {
2310 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2311 }
2312}
2313
2314static void win_stdio_close(CharDriverState *chr)
2315{
2316 WinStdioCharState *stdio = chr->opaque;
2317
2318 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2319 CloseHandle(stdio->hInputReadyEvent);
2320 }
2321 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2322 CloseHandle(stdio->hInputDoneEvent);
2323 }
2324 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2325 TerminateThread(stdio->hInputThread, 0);
2326 }
2327
2328 g_free(chr->opaque);
2329 g_free(chr);
db418a0a
FC		 2330}
2331
8c84b25d
PB		 2332static CharDriverState *qemu_chr_open_stdio(const char *id,
2333 ChardevBackend *backend,
2334 ChardevReturn *ret,
2335 Error **errp)
db418a0a
FC		 2336{
2337 CharDriverState *chr;
2338 WinStdioCharState *stdio;
2339 DWORD dwMode;
2340 int is_console = 0;
d0d7708b 2341 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
db418a0a 2342
d0d7708b
DB		 2343 chr = qemu_chr_alloc(common, errp);
2344 if (!chr) {
2345 return NULL;
2346 }
2d528d45 2347 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2348
2349 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2350 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2351 error_setg(errp, "cannot open stdio: invalid handle");
2352 return NULL;
db418a0a
FC		 2353 }
2354
2355 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2356
2357 chr->opaque = stdio;
2358 chr->chr_write = win_stdio_write;
2359 chr->chr_close = win_stdio_close;
2360
ed7a1540
AL		 2361 if (is_console) {
2362 if (qemu_add_wait_object(stdio->hStdIn,
2363 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2364 error_setg(errp, "qemu_add_wait_object: failed");
2365 goto err1;
ed7a1540
AL		 2366 }
2367 } else {
2368 DWORD dwId;
2369
2370 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2371 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2372 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2373 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2374 error_setg(errp, "cannot create event");
2375 goto err2;
ed7a1540
AL		 2376 }
2377 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2378 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2379 error_setg(errp, "qemu_add_wait_object: failed");
2380 goto err2;
2381 }
2382 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2383 chr, 0, &dwId);
2384
2385 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2386 error_setg(errp, "cannot create stdio thread");
2387 goto err3;
db418a0a
FC		 2388 }
2389 }
2390
2391 dwMode |= ENABLE_LINE_INPUT;
2392
ed7a1540 2393 if (is_console) {
db418a0a
FC		 2394 /* set the terminal in raw mode */
2395 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2396 dwMode |= ENABLE_PROCESSED_INPUT;
2397 }
2398
2399 SetConsoleMode(stdio->hStdIn, dwMode);
2400
2401 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2402 qemu_chr_fe_set_echo(chr, false);
2403
1f51470d 2404 return chr;
8c84b25d
PB		 2405
2406err3:
2407 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2408err2:
2409 CloseHandle(stdio->hInputReadyEvent);
2410 CloseHandle(stdio->hInputDoneEvent);
2411err1:
2412 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2413 return NULL;
db418a0a 2414}
6f97dba0
AL		 2415#endif /* !_WIN32 */
2416
5ab8211b 2417
6f97dba0
AL		 2418/***********************************************************/
2419/* UDP Net console */
2420
2421typedef struct {
9894dc0c 2422 QIOChannel *ioc;
9bd7854e 2423 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2424 int bufcnt;
2425 int bufptr;
2426 int max_size;
2427} NetCharDriver;
2428
9005b2a7 2429/* Called with chr_write_lock held. */
6f97dba0
AL		 2430static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2431{
2432 NetCharDriver *s = chr->opaque;
76a9644b 2433
9894dc0c
DB		 2434 return qio_channel_write(
2435 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2436}
2437
2438static int udp_chr_read_poll(void *opaque)
2439{
2440 CharDriverState *chr = opaque;
2441 NetCharDriver *s = chr->opaque;
2442
909cda12 2443 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2444
2445 /* If there were any stray characters in the queue process them
2446 * first
2447 */
2448 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2449 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2450 s->bufptr++;
909cda12 2451 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2452 }
2453 return s->max_size;
2454}
2455
9894dc0c 2456static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2457{
2458 CharDriverState *chr = opaque;
2459 NetCharDriver *s = chr->opaque;
9894dc0c 2460 ssize_t ret;
6f97dba0 2461
cdbf6e16
PB		 2462 if (s->max_size == 0) {
2463 return TRUE;
2464 }
9894dc0c
DB		 2465 ret = qio_channel_read(
2466 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2467 if (ret <= 0) {
26da70c7 2468 remove_fd_in_watch(chr);
76a9644b
AL		 2469 return FALSE;
2470 }
9894dc0c 2471 s->bufcnt = ret;
6f97dba0
AL		 2472
2473 s->bufptr = 0;
2474 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2475 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2476 s->bufptr++;
909cda12 2477 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2478 }
76a9644b
AL		 2479
2480 return TRUE;
6f97dba0
AL		 2481}
2482
2483static void udp_chr_update_read_handler(CharDriverState *chr)
2484{
2485 NetCharDriver *s = chr->opaque;
2486
26da70c7 2487 remove_fd_in_watch(chr);
9894dc0c
DB		 2488 if (s->ioc) {
2489 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2490 udp_chr_read_poll,
7ba9addc 2491 udp_chr_read, chr);
6f97dba0
AL		 2492 }
2493}
2494
819f56b7
AL		 2495static void udp_chr_close(CharDriverState *chr)
2496{
2497 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2498
2499 remove_fd_in_watch(chr);
9894dc0c
DB		 2500 if (s->ioc) {
2501 object_unref(OBJECT(s->ioc));
819f56b7 2502 }
7267c094 2503 g_free(s);
a425d23f 2504 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2505}
2506
9894dc0c
DB		 2507static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2508 ChardevCommon *backend,
2509 Error **errp)
6f97dba0
AL		 2510{
2511 CharDriverState *chr = NULL;
2512 NetCharDriver *s = NULL;
6f97dba0 2513
d0d7708b
DB		 2514 chr = qemu_chr_alloc(backend, errp);
2515 if (!chr) {
2516 return NULL;
2517 }
2d528d45 2518 s = g_new0(NetCharDriver, 1);
6f97dba0 2519
9894dc0c 2520 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2521 s->bufcnt = 0;
2522 s->bufptr = 0;
2523 chr->opaque = s;
2524 chr->chr_write = udp_chr_write;
2525 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2526 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2527 /* be isn't opened until we get a connection */
2528 chr->explicit_be_open = true;
1f51470d 2529 return chr;
3ecc059d 2530}
6f97dba0 2531
6f97dba0
AL		 2532/***********************************************************/
2533/* TCP Net console */
2534
2535typedef struct {
a8fb5427
DB		 2536 QIOChannel *ioc; /* Client I/O channel */
2537 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2538 QIOChannelSocket *listen_ioc;
7ba9addc 2539 guint listen_tag;
a8fb5427 2540 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2541 int connected;
2542 int max_size;
2543 int do_telnetopt;
2544 int do_nodelay;
2545 int is_unix;
c76bf6bb 2546 int *read_msgfds;
9894dc0c 2547 size_t read_msgfds_num;
d39aac7a 2548 int *write_msgfds;
9894dc0c 2549 size_t write_msgfds_num;
cfb429cb
CM		 2550
2551 SocketAddress *addr;
2552 bool is_listen;
2553 bool is_telnet;
5dd1f02b
CM		 2554
2555 guint reconnect_timer;
2556 int64_t reconnect_time;
5008e5b7 2557 bool connect_err_reported;
6f97dba0
AL		 2558} TCPCharDriver;
2559
5dd1f02b
CM		 2560static gboolean socket_reconnect_timeout(gpointer opaque);
2561
2562static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2563{
2564 TCPCharDriver *s = chr->opaque;
2565 assert(s->connected == 0);
2566 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2567 socket_reconnect_timeout, chr);
2568}
2569
5008e5b7
CM		 2570static void check_report_connect_error(CharDriverState *chr,
2571 Error *err)
2572{
2573 TCPCharDriver *s = chr->opaque;
2574
2575 if (!s->connect_err_reported) {
2576 error_report("Unable to connect character device %s: %s",
2577 chr->label, error_get_pretty(err));
2578 s->connect_err_reported = true;
2579 }
2580 qemu_chr_socket_restart_timer(chr);
2581}
2582
9894dc0c
DB		 2583static gboolean tcp_chr_accept(QIOChannel *chan,
2584 GIOCondition cond,
2585 void *opaque);
d39aac7a 2586
9005b2a7 2587/* Called with chr_write_lock held. */
6f97dba0
AL		 2588static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2589{
2590 TCPCharDriver *s = chr->opaque;
2591 if (s->connected) {
9894dc0c
DB		 2592 int ret = io_channel_send_full(s->ioc, buf, len,
2593 s->write_msgfds,
2594 s->write_msgfds_num);
2595
2596 /* free the written msgfds, no matter what */
2597 if (s->write_msgfds_num) {
2598 g_free(s->write_msgfds);
2599 s->write_msgfds = 0;
2600 s->write_msgfds_num = 0;
d39aac7a 2601 }
9894dc0c
DB		 2602
2603 return ret;
455aa1e0 2604 } else {
6db0fdce 2605 /* XXX: indicate an error ? */
455aa1e0 2606 return len;
6f97dba0
AL		 2607 }
2608}
2609
2610static int tcp_chr_read_poll(void *opaque)
2611{
2612 CharDriverState *chr = opaque;
2613 TCPCharDriver *s = chr->opaque;
2614 if (!s->connected)
2615 return 0;
909cda12 2616 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2617 return s->max_size;
2618}
2619
2620#define IAC 255
2621#define IAC_BREAK 243
2622static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2623 TCPCharDriver *s,
2624 uint8_t *buf, int *size)
2625{
2626 /* Handle any telnet client's basic IAC options to satisfy char by
2627 * char mode with no echo. All IAC options will be removed from
2628 * the buf and the do_telnetopt variable will be used to track the
2629 * state of the width of the IAC information.
2630 *
2631 * IAC commands come in sets of 3 bytes with the exception of the
2632 * "IAC BREAK" command and the double IAC.
2633 */
2634
2635 int i;
2636 int j = 0;
2637
2638 for (i = 0; i < *size; i++) {
2639 if (s->do_telnetopt > 1) {
2640 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2641 /* Double IAC means send an IAC */
2642 if (j != i)
2643 buf[j] = buf[i];
2644 j++;
2645 s->do_telnetopt = 1;
2646 } else {
2647 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2648 /* Handle IAC break commands by sending a serial break */
a425d23f 2649 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2650 s->do_telnetopt++;
2651 }
2652 s->do_telnetopt++;
2653 }
2654 if (s->do_telnetopt >= 4) {
2655 s->do_telnetopt = 1;
2656 }
2657 } else {
2658 if ((unsigned char)buf[i] == IAC) {
2659 s->do_telnetopt = 2;
2660 } else {
2661 if (j != i)
2662 buf[j] = buf[i];
2663 j++;
2664 }
2665 }
2666 }
2667 *size = j;
2668}
2669
c76bf6bb 2670static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2671{
2672 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2673 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2674
c4095726
MT		 2675 assert(num <= TCP_MAX_FDS);
2676
c76bf6bb 2677 if (to_copy) {
d2fc39b4
SH		 2678 int i;
2679
c76bf6bb
NN		 2680 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2681
d2fc39b4
SH		 2682 /* Close unused fds */
2683 for (i = to_copy; i < s->read_msgfds_num; i++) {
2684 close(s->read_msgfds[i]);
2685 }
2686
c76bf6bb
NN		 2687 g_free(s->read_msgfds);
2688 s->read_msgfds = 0;
2689 s->read_msgfds_num = 0;
2690 }
2691
2692 return to_copy;
7d174059
MM		 2693}
2694
d39aac7a
NN		 2695static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2696{
2697 TCPCharDriver *s = chr->opaque;
2698
9894dc0c
DB		 2699 if (!qio_channel_has_feature(s->ioc,
2700 QIO_CHANNEL_FEATURE_FD_PASS)) {
2701 return -1;
2702 }
d39aac7a 2703 /* clear old pending fd array */
ef1e1e07 2704 g_free(s->write_msgfds);
d39aac7a
NN		 2705
2706 if (num) {
2d528d45 2707 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2708 memcpy(s->write_msgfds, fds, num * sizeof(int));
2709 }
2710
2711 s->write_msgfds_num = num;
2712
2713 return 0;
2714}
2715
9894dc0c 2716static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2717{
2718 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2719 struct iovec iov = { .iov_base = buf, .iov_len = len };
2720 int ret;
2721 size_t i;
2722 int *msgfds = NULL;
2723 size_t msgfds_num = 0;
2724
2725 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2726 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2727 &msgfds, &msgfds_num,
2728 NULL);
2729 } else {
2730 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2731 NULL, NULL,
2732 NULL);
2733 }
7d174059 2734
9894dc0c 2735 if (msgfds_num) {
c76bf6bb
NN		 2736 /* close and clean read_msgfds */
2737 for (i = 0; i < s->read_msgfds_num; i++) {
2738 close(s->read_msgfds[i]);
2739 }
9b938c72 2740
c76bf6bb
NN		 2741 if (s->read_msgfds_num) {
2742 g_free(s->read_msgfds);
2743 }
2744
9894dc0c
DB		 2745 s->read_msgfds = msgfds;
2746 s->read_msgfds_num = msgfds_num;
7d174059 2747 }
7d174059 2748
9894dc0c
DB		 2749 for (i = 0; i < s->read_msgfds_num; i++) {
2750 int fd = s->read_msgfds[i];
2751 if (fd < 0) {
2752 continue;
2753 }
9977c894 2754
9894dc0c
DB		 2755 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2756 qemu_set_block(fd);
7d174059 2757
9894dc0c
DB		 2758#ifndef MSG_CMSG_CLOEXEC
2759 qemu_set_cloexec(fd);
06138651 2760#endif
06138651 2761 }
9977c894 2762
7d174059 2763 return ret;
9977c894 2764}
9977c894 2765
d3cc5bc4
AS		 2766static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2767{
2768 TCPCharDriver *s = chr->opaque;
9894dc0c 2769 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2770}
2771
7b0bfdf5
NN		 2772static void tcp_chr_disconnect(CharDriverState *chr)
2773{
2774 TCPCharDriver *s = chr->opaque;
2775
2776 s->connected = 0;
9894dc0c
DB		 2777 if (s->listen_ioc) {
2778 s->listen_tag = qio_channel_add_watch(
2779 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
7b0bfdf5
NN		 2780 }
2781 remove_fd_in_watch(chr);
a8fb5427
DB		 2782 object_unref(OBJECT(s->sioc));
2783 s->sioc = NULL;
9894dc0c
DB		 2784 object_unref(OBJECT(s->ioc));
2785 s->ioc = NULL;
0ff0fad2
DB		 2786 g_free(chr->filename);
2787 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2788 s->is_listen, s->is_telnet);
7b0bfdf5 2789 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2790 if (s->reconnect_time) {
2791 qemu_chr_socket_restart_timer(chr);
2792 }
7b0bfdf5
NN		 2793}
2794
9894dc0c 2795static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2796{
2797 CharDriverState *chr = opaque;
2798 TCPCharDriver *s = chr->opaque;
9bd7854e 2799 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2800 int len, size;
2801
2ea5a7af 2802 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2803 return TRUE;
2ea5a7af 2804 }
6f97dba0
AL		 2805 len = sizeof(buf);
2806 if (len > s->max_size)
2807 len = s->max_size;
9977c894 2808 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2809 if (size == 0 || size == -1) {
6f97dba0 2810 /* connection closed */
7b0bfdf5 2811 tcp_chr_disconnect(chr);
6f97dba0
AL		 2812 } else if (size > 0) {
2813 if (s->do_telnetopt)
2814 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2815 if (size > 0)
fa5efccb 2816 qemu_chr_be_write(chr, buf, size);
6f97dba0 2817 }
2ea5a7af
AL		 2818
2819 return TRUE;
6f97dba0
AL		 2820}
2821
7b0bfdf5
NN		 2822static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2823{
2824 TCPCharDriver *s = chr->opaque;
2825 int size;
2826
2827 if (!s->connected) {
2828 return 0;
2829 }
2830
2831 size = tcp_chr_recv(chr, (void *) buf, len);
2832 if (size == 0) {
2833 /* connection closed */
2834 tcp_chr_disconnect(chr);
2835 }
2836
2837 return size;
2838}
2839
68c18d1c
BS		 2840#ifndef _WIN32
2841CharDriverState *qemu_chr_open_eventfd(int eventfd)
2842{
d0d7708b 2843 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd, NULL, NULL);
e9d21c43
DM		 2844
2845 if (chr) {
2846 chr->avail_connections = 1;
2847 }
2848
2849 return chr;
6cbf4c8c 2850}
68c18d1c 2851#endif
6cbf4c8c 2852
6f97dba0
AL		 2853static void tcp_chr_connect(void *opaque)
2854{
2855 CharDriverState *chr = opaque;
2856 TCPCharDriver *s = chr->opaque;
16cc4ffe 2857
0ff0fad2 2858 g_free(chr->filename);
a8fb5427
DB		 2859 chr->filename = sockaddr_to_str(
2860 &s->sioc->localAddr, s->sioc->localAddrLen,
2861 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2862 s->is_listen, s->is_telnet);
6f97dba0
AL		 2863
2864 s->connected = 1;
9894dc0c
DB		 2865 if (s->ioc) {
2866 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2867 tcp_chr_read_poll,
7ba9addc 2868 tcp_chr_read, chr);
bbdd2ad0 2869 }
fee204fd 2870 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2871}
2872
ac1b84dd
GH		 2873static void tcp_chr_update_read_handler(CharDriverState *chr)
2874{
2875 TCPCharDriver *s = chr->opaque;
2876
2877 remove_fd_in_watch(chr);
9894dc0c
DB		 2878 if (s->ioc) {
2879 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2880 tcp_chr_read_poll,
ac1b84dd
GH		 2881 tcp_chr_read, chr);
2882 }
2883}
2884
f2001a7e
DB		 2885typedef struct {
2886 CharDriverState *chr;
2887 char buf[12];
2888 size_t buflen;
2889} TCPCharDriverTelnetInit;
2890
2891static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2892 GIOCondition cond G_GNUC_UNUSED,
2893 gpointer user_data)
6f97dba0 2894{
f2001a7e
DB		 2895 TCPCharDriverTelnetInit *init = user_data;
2896 ssize_t ret;
2897
2898 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2899 if (ret < 0) {
2900 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2901 ret = 0;
2902 } else {
2903 tcp_chr_disconnect(init->chr);
2904 return FALSE;
2905 }
2906 }
2907 init->buflen -= ret;
2908
2909 if (init->buflen == 0) {
2910 tcp_chr_connect(init->chr);
2911 return FALSE;
2912 }
2913
2914 memmove(init->buf, init->buf + ret, init->buflen);
2915
2916 return TRUE;
2917}
2918
2919static void tcp_chr_telnet_init(CharDriverState *chr)
2920{
2921 TCPCharDriver *s = chr->opaque;
2922 TCPCharDriverTelnetInit *init =
2923 g_new0(TCPCharDriverTelnetInit, 1);
2924 size_t n = 0;
2925
2926 init->chr = chr;
2927 init->buflen = 12;
2928
2929#define IACSET(x, a, b, c) \
2930 do { \
2931 x[n++] = a; \
2932 x[n++] = b; \
2933 x[n++] = c; \
2934 } while (0)
2935
2936 /* Prep the telnet negotion to put telnet in binary,
2937 * no echo, single char mode */
2938 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2939 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2940 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2941 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2942
2943#undef IACSET
2944
2945 qio_channel_add_watch(
2946 s->ioc, G_IO_OUT,
2947 tcp_chr_telnet_init_io,
2948 init, NULL);
6f97dba0
AL		 2949}
2950
a8fb5427
DB		 2951
2952static void tcp_chr_tls_handshake(Object *source,
2953 Error *err,
2954 gpointer user_data)
2955{
2956 CharDriverState *chr = user_data;
2957 TCPCharDriver *s = chr->opaque;
2958
2959 if (err) {
2960 tcp_chr_disconnect(chr);
2961 } else {
2962 if (s->do_telnetopt) {
2963 tcp_chr_telnet_init(chr);
2964 } else {
2965 tcp_chr_connect(chr);
2966 }
2967 }
2968}
2969
2970
2971static void tcp_chr_tls_init(CharDriverState *chr)
2972{
2973 TCPCharDriver *s = chr->opaque;
2974 QIOChannelTLS *tioc;
2975 Error *err = NULL;
2976
2977 if (s->is_listen) {
2978 tioc = qio_channel_tls_new_server(
2979 s->ioc, s->tls_creds,
2980 NULL, /* XXX Use an ACL */
2981 &err);
2982 } else {
2983 tioc = qio_channel_tls_new_client(
2984 s->ioc, s->tls_creds,
2985 s->addr->u.inet->host,
2986 &err);
2987 }
2988 if (tioc == NULL) {
2989 error_free(err);
2990 tcp_chr_disconnect(chr);
2991 }
2992 object_unref(OBJECT(s->ioc));
2993 s->ioc = QIO_CHANNEL(tioc);
2994
2995 qio_channel_tls_handshake(tioc,
2996 tcp_chr_tls_handshake,
2997 chr,
2998 NULL);
2999}
3000
3001
9894dc0c 3002static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3003{
3004 TCPCharDriver *s = chr->opaque;
9894dc0c 3005 if (s->ioc != NULL) {
13661089 3006 return -1;
9894dc0c 3007 }
13661089 3008
9894dc0c
DB		 3009 s->ioc = QIO_CHANNEL(sioc);
3010 object_ref(OBJECT(sioc));
a8fb5427
DB		 3011 s->sioc = sioc;
3012 object_ref(OBJECT(sioc));
9894dc0c
DB		 3013
3014 if (s->do_nodelay) {
3015 qio_channel_set_delay(s->ioc, false);
3016 }
910b6368
PB		 3017 if (s->listen_tag) {
3018 g_source_remove(s->listen_tag);
3019 s->listen_tag = 0;
3020 }
f2001a7e 3021
a8fb5427
DB		 3022 if (s->tls_creds) {
3023 tcp_chr_tls_init(chr);
f2001a7e 3024 } else {
a8fb5427
DB		 3025 if (s->do_telnetopt) {
3026 tcp_chr_telnet_init(chr);
3027 } else {
3028 tcp_chr_connect(chr);
3029 }
f2001a7e 3030 }
13661089
DB		 3031
3032 return 0;
3033}
3034
9894dc0c
DB		 3035
3036static int tcp_chr_add_client(CharDriverState *chr, int fd)
3037{
3038 int ret;
3039 QIOChannelSocket *sioc;
3040
3041 sioc = qio_channel_socket_new_fd(fd, NULL);
3042 if (!sioc) {
3043 return -1;
3044 }
3045 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3046 ret = tcp_chr_new_client(chr, sioc);
3047 object_unref(OBJECT(sioc));
3048 return ret;
3049}
3050
3051static gboolean tcp_chr_accept(QIOChannel *channel,
3052 GIOCondition cond,
3053 void *opaque)
6f97dba0
AL		 3054{
3055 CharDriverState *chr = opaque;
9894dc0c 3056 QIOChannelSocket *sioc;
6f97dba0 3057
9894dc0c
DB		 3058 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3059 NULL);
3060 if (!sioc) {
3061 return TRUE;
6f97dba0 3062 }
9894dc0c 3063
9894dc0c
DB		 3064 tcp_chr_new_client(chr, sioc);
3065
3066 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3067
3068 return TRUE;
6f97dba0
AL		 3069}
3070
3071static void tcp_chr_close(CharDriverState *chr)
3072{
3073 TCPCharDriver *s = chr->opaque;
c76bf6bb 3074 int i;
cfb429cb 3075
5dd1f02b
CM		 3076 if (s->reconnect_timer) {
3077 g_source_remove(s->reconnect_timer);
3078 s->reconnect_timer = 0;
3079 }
cfb429cb 3080 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3081 remove_fd_in_watch(chr);
3082 if (s->ioc) {
3083 object_unref(OBJECT(s->ioc));
819f56b7 3084 }
9894dc0c
DB		 3085 if (s->listen_tag) {
3086 g_source_remove(s->listen_tag);
3087 s->listen_tag = 0;
3088 }
3089 if (s->listen_ioc) {
3090 object_unref(OBJECT(s->listen_ioc));
819f56b7 3091 }
c76bf6bb
NN		 3092 if (s->read_msgfds_num) {
3093 for (i = 0; i < s->read_msgfds_num; i++) {
3094 close(s->read_msgfds[i]);
3095 }
3096 g_free(s->read_msgfds);
3097 }
a8fb5427
DB		 3098 if (s->tls_creds) {
3099 object_unref(OBJECT(s->tls_creds));
3100 }
d39aac7a
NN		 3101 if (s->write_msgfds_num) {
3102 g_free(s->write_msgfds);
3103 }
7267c094 3104 g_free(s);
a425d23f 3105 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3106}
3107
9894dc0c
DB		 3108static void qemu_chr_finish_socket_connection(CharDriverState *chr,
3109 QIOChannelSocket *sioc)
6f97dba0 3110{
43ded1a0 3111 TCPCharDriver *s = chr->opaque;
f6bd5d6e 3112
cfb429cb 3113 if (s->is_listen) {
9894dc0c
DB		 3114 s->listen_ioc = sioc;
3115 s->listen_tag = qio_channel_add_watch(
3116 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
f6bd5d6e 3117 } else {
9894dc0c
DB		 3118 tcp_chr_new_client(chr, sioc);
3119 object_unref(OBJECT(sioc));
f6bd5d6e 3120 }
43ded1a0
CM		 3121}
3122
9894dc0c 3123static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3124{
9894dc0c 3125 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3126 CharDriverState *chr = opaque;
5008e5b7 3127 TCPCharDriver *s = chr->opaque;
5dd1f02b 3128
9894dc0c 3129 if (err) {
5008e5b7 3130 check_report_connect_error(chr, err);
9894dc0c 3131 object_unref(src);
5dd1f02b
CM		 3132 return;
3133 }
3134
5008e5b7 3135 s->connect_err_reported = false;
9894dc0c 3136 qemu_chr_finish_socket_connection(chr, sioc);
5dd1f02b
CM		 3137}
3138
cfb429cb 3139static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
43ded1a0 3140{
cfb429cb 3141 TCPCharDriver *s = chr->opaque;
9894dc0c 3142 QIOChannelSocket *sioc = qio_channel_socket_new();
43ded1a0 3143
cfb429cb 3144 if (s->is_listen) {
9894dc0c
DB		 3145 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
3146 goto fail;
3147 }
3148 qemu_chr_finish_socket_connection(chr, sioc);
5dd1f02b 3149 } else if (s->reconnect_time) {
9894dc0c
DB		 3150 qio_channel_socket_connect_async(sioc, s->addr,
3151 qemu_chr_socket_connected,
3152 chr, NULL);
5dd1f02b 3153 } else {
9894dc0c
DB		 3154 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3155 goto fail;
3156 }
3157 qemu_chr_finish_socket_connection(chr, sioc);
43ded1a0
CM		 3158 }
3159
16cc4ffe 3160 return true;
9894dc0c
DB		 3161
3162 fail:
3163 object_unref(OBJECT(sioc));
3164 return false;
f6bd5d6e
GH		 3165}
3166
51767e7c 3167/*********************************************************/
3949e594 3168/* Ring buffer chardev */
51767e7c
LL		 3169
3170typedef struct {
3171 size_t size;
3172 size_t prod;
3173 size_t cons;
3174 uint8_t *cbuf;
3949e594 3175} RingBufCharDriver;
51767e7c 3176
3949e594 3177static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3178{
3949e594 3179 const RingBufCharDriver *d = chr->opaque;
51767e7c 3180
5c230105 3181 return d->prod - d->cons;
51767e7c
LL		 3182}
3183
9005b2a7 3184/* Called with chr_write_lock held. */
3949e594 3185static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3186{
3949e594 3187 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3188 int i;
3189
3190 if (!buf || (len < 0)) {
3191 return -1;
3192 }
3193
3194 for (i = 0; i < len; i++ ) {
5c230105
MA		 3195 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3196 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3197 d->cons = d->prod - d->size;
3198 }
3199 }
3200
3201 return 0;
3202}
3203
3949e594 3204static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3205{
3949e594 3206 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3207 int i;
3208
9005b2a7 3209 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3210 for (i = 0; i < len && d->cons != d->prod; i++) {
3211 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3212 }
9005b2a7 3213 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3214
3215 return i;
3216}
3217
3949e594 3218static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3219{
3949e594 3220 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3221
3222 g_free(d->cbuf);
3223 g_free(d);
3224 chr->opaque = NULL;
3225}
3226
479f09a1
PB		 3227static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3228 ChardevBackend *backend,
3229 ChardevReturn *ret,
4f57378f 3230 Error **errp)
51767e7c 3231{
130257dc 3232 ChardevRingbuf *opts = backend->u.ringbuf;
d0d7708b 3233 ChardevCommon *common = qapi_ChardevRingbuf_base(backend->u.ringbuf);
51767e7c 3234 CharDriverState *chr;
3949e594 3235 RingBufCharDriver *d;
51767e7c 3236
d0d7708b
DB		 3237 chr = qemu_chr_alloc(common, errp);
3238 if (!chr) {
3239 return NULL;
3240 }
51767e7c
LL		 3241 d = g_malloc(sizeof(*d));
3242
1da48c65 3243 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3244
3245 /* The size must be power of 2 */
3246 if (d->size & (d->size - 1)) {
4f57378f 3247 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3248 goto fail;
3249 }
3250
3251 d->prod = 0;
3252 d->cons = 0;
3253 d->cbuf = g_malloc0(d->size);
3254
3255 chr->opaque = d;
3949e594
MA		 3256 chr->chr_write = ringbuf_chr_write;
3257 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3258
3259 return chr;
3260
3261fail:
3262 g_free(d);
d0d7708b 3263 qemu_chr_free_common(chr);
51767e7c
LL		 3264 return NULL;
3265}
3266
8e597779 3267bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3268{
3949e594 3269 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3270}
3271
3949e594 3272void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3273 bool has_format, enum DataFormat format,
1f590cf9
LL		 3274 Error **errp)
3275{
3276 CharDriverState *chr;
c4f331b6 3277 const uint8_t *write_data;
1f590cf9 3278 int ret;
3d1bba20 3279 gsize write_count;
1f590cf9
LL		 3280
3281 chr = qemu_chr_find(device);
3282 if (!chr) {
1a69278e 3283 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3284 return;
3285 }
3286
3949e594
MA		 3287 if (!chr_is_ringbuf(chr)) {
3288 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3289 return;
3290 }
3291
1f590cf9 3292 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3293 write_data = qbase64_decode(data, -1,
3294 &write_count,
3295 errp);
3296 if (!write_data) {
3297 return;
3298 }
1f590cf9
LL		 3299 } else {
3300 write_data = (uint8_t *)data;
82e59a67 3301 write_count = strlen(data);
1f590cf9
LL		 3302 }
3303
3949e594 3304 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3305
13289fb5
MA		 3306 if (write_data != (uint8_t *)data) {
3307 g_free((void *)write_data);
3308 }
3309
1f590cf9
LL		 3310 if (ret < 0) {
3311 error_setg(errp, "Failed to write to device %s", device);
3312 return;
3313 }
3314}
3315
3949e594 3316char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3317 bool has_format, enum DataFormat format,
3318 Error **errp)
49b6d722
LL		 3319{
3320 CharDriverState *chr;
c4f331b6 3321 uint8_t *read_data;
49b6d722 3322 size_t count;
3ab651fc 3323 char *data;
49b6d722
LL		 3324
3325 chr = qemu_chr_find(device);
3326 if (!chr) {
1a69278e 3327 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3328 return NULL;
3329 }
3330
3949e594
MA		 3331 if (!chr_is_ringbuf(chr)) {
3332 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3333 return NULL;
3334 }
3335
3336 if (size <= 0) {
3337 error_setg(errp, "size must be greater than zero");
3338 return NULL;
3339 }
3340
3949e594 3341 count = ringbuf_count(chr);
49b6d722 3342 size = size > count ? count : size;
44f3bcd2 3343 read_data = g_malloc(size + 1);
49b6d722 3344
3949e594 3345 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3346
3347 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3348 data = g_base64_encode(read_data, size);
13289fb5 3349 g_free(read_data);
49b6d722 3350 } else {
3949e594
MA		 3351 /*
3352 * FIXME should read only complete, valid UTF-8 characters up
3353 * to @size bytes. Invalid sequences should be replaced by a
3354 * suitable replacement character. Except when (and only
3355 * when) ring buffer lost characters since last read, initial
3356 * continuation characters should be dropped.
3357 */
44f3bcd2 3358 read_data[size] = 0;
3ab651fc 3359 data = (char *)read_data;
49b6d722
LL		 3360 }
3361
3ab651fc 3362 return data;
49b6d722
LL		 3363}
3364
33521634 3365QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3366{
6ea314d9 3367 char host[65], port[33], width[8], height[8];
aeb2c47a 3368 int pos;
7d31544f 3369 const char *p;
191bc01b 3370 QemuOpts *opts;
8be7e7e4 3371 Error *local_err = NULL;
191bc01b 3372
8be7e7e4 3373 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3374 if (local_err) {
33394884 3375 error_report_err(local_err);
191bc01b 3376 return NULL;
8be7e7e4 3377 }
191bc01b 3378
7591c5c1
GH		 3379 if (strstart(filename, "mon:", &p)) {
3380 filename = p;
f43e47db 3381 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3382 if (strcmp(filename, "stdio") == 0) {
3383 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3384 * but pass it to the guest. Handle this only for compat syntax,
3385 * for -chardev syntax we have special option for this.
3386 * This is what -nographic did, redirecting+muxing serial+monitor
3387 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3388 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3389 }
7591c5c1
GH		 3390 }
3391
f0457e8d
GH		 3392 if (strcmp(filename, "null") == 0 ||
3393 strcmp(filename, "pty") == 0 ||
3394 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3395 strcmp(filename, "braille") == 0 ||
5692399f 3396 strcmp(filename, "testdev") == 0 ||
f0457e8d 3397 strcmp(filename, "stdio") == 0) {
f43e47db 3398 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3399 return opts;
3400 }
6ea314d9 3401 if (strstart(filename, "vc", &p)) {
f43e47db 3402 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3403 if (*p == ':') {
49aa4058 3404 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3405 /* pixels */
f43e47db
MA		 3406 qemu_opt_set(opts, "width", width, &error_abort);
3407 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3408 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3409 /* chars */
f43e47db
MA		 3410 qemu_opt_set(opts, "cols", width, &error_abort);
3411 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3412 } else {
3413 goto fail;
3414 }
3415 }
3416 return opts;
3417 }
d6c983cd 3418 if (strcmp(filename, "con:") == 0) {
f43e47db 3419 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3420 return opts;
3421 }
48b76496 3422 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3423 qemu_opt_set(opts, "backend", "serial", &error_abort);
3424 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3425 return opts;
3426 }
7d31544f 3427 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3428 qemu_opt_set(opts, "backend", "file", &error_abort);
3429 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3430 return opts;
3431 }
3432 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3433 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3434 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3435 return opts;
3436 }
aeb2c47a
GH		 3437 if (strstart(filename, "tcp:", &p) ||
3438 strstart(filename, "telnet:", &p)) {
3439 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3440 host[0] = 0;
3441 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3442 goto fail;
3443 }
f43e47db
MA		 3444 qemu_opt_set(opts, "backend", "socket", &error_abort);
3445 qemu_opt_set(opts, "host", host, &error_abort);
3446 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3447 if (p[pos] == ',') {
dc523cd3
MA		 3448 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3449 if (local_err) {
3450 error_report_err(local_err);
aeb2c47a 3451 goto fail;
dc523cd3 3452 }
aeb2c47a
GH		 3453 }
3454 if (strstart(filename, "telnet:", &p))
f43e47db 3455 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3456 return opts;
3457 }
7e1b35b4 3458 if (strstart(filename, "udp:", &p)) {
f43e47db 3459 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3460 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3461 host[0] = 0;
39324ca4 3462 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3463 goto fail;
3464 }
3465 }
f43e47db
MA		 3466 qemu_opt_set(opts, "host", host, &error_abort);
3467 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3468 if (p[pos] == '@') {
3469 p += pos + 1;
3470 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3471 host[0] = 0;
3472 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3473 goto fail;
3474 }
3475 }
f43e47db
MA		 3476 qemu_opt_set(opts, "localaddr", host, &error_abort);
3477 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3478 }
3479 return opts;
3480 }
aeb2c47a 3481 if (strstart(filename, "unix:", &p)) {
f43e47db 3482 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3483 qemu_opts_do_parse(opts, p, "path", &local_err);
3484 if (local_err) {
3485 error_report_err(local_err);
aeb2c47a 3486 goto fail;
dc523cd3 3487 }
aeb2c47a
GH		 3488 return opts;
3489 }
48b76496
GH		 3490 if (strstart(filename, "/dev/parport", NULL) ||
3491 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3492 qemu_opt_set(opts, "backend", "parport", &error_abort);
3493 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3494 return opts;
3495 }
3496 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3497 qemu_opt_set(opts, "backend", "tty", &error_abort);
3498 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3499 return opts;
3500 }
191bc01b 3501
aeb2c47a 3502fail:
191bc01b
GH		 3503 qemu_opts_del(opts);
3504 return NULL;
3505}
3506
d0d7708b
DB		 3507static void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
3508{
3509 const char *logfile = qemu_opt_get(opts, "logfile");
3510
3511 backend->has_logfile = logfile != NULL;
3512 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3513
3514 backend->has_logappend = true;
3515 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3516}
3517
3518
846e2e49
GH		 3519static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3520 Error **errp)
3521{
3522 const char *path = qemu_opt_get(opts, "path");
3523
3524 if (path == NULL) {
3525 error_setg(errp, "chardev: file: no filename given");
3526 return;
3527 }
130257dc 3528 backend->u.file = g_new0(ChardevFile, 1);
d0d7708b 3529 qemu_chr_parse_common(opts, qapi_ChardevFile_base(backend->u.file));
130257dc 3530 backend->u.file->out = g_strdup(path);
31e38a22
OK		 3531
3532 backend->u.file->has_append = true;
3533 backend->u.file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3534}
3535
7c358031
GH		 3536static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3537 Error **errp)
3538{
130257dc 3539 backend->u.stdio = g_new0(ChardevStdio, 1);
d0d7708b 3540 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(backend->u.stdio));
130257dc
EB		 3541 backend->u.stdio->has_signal = true;
3542 backend->u.stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3543}
3544
6511d396 3545#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3546static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3547 Error **errp)
3548{
3549 const char *device = qemu_opt_get(opts, "path");
3550
3551 if (device == NULL) {
3552 error_setg(errp, "chardev: serial/tty: no device path given");
3553 return;
3554 }
130257dc 3555 backend->u.serial = g_new0(ChardevHostdev, 1);
d0d7708b 3556 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.serial));
130257dc 3557 backend->u.serial->device = g_strdup(device);
0f1cb51d 3558}
6511d396 3559#endif
0f1cb51d 3560
38bfb1a6 3561#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3562static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3563 Error **errp)
3564{
3565 const char *device = qemu_opt_get(opts, "path");
3566
3567 if (device == NULL) {
3568 error_setg(errp, "chardev: parallel: no device path given");
3569 return;
3570 }
130257dc 3571 backend->u.parallel = g_new0(ChardevHostdev, 1);
d0d7708b 3572 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.parallel));
130257dc 3573 backend->u.parallel->device = g_strdup(device);
dc375097 3574}
38bfb1a6 3575#endif
dc375097 3576
548cbb36
GH		 3577static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3578 Error **errp)
3579{
3580 const char *device = qemu_opt_get(opts, "path");
3581
3582 if (device == NULL) {
3583 error_setg(errp, "chardev: pipe: no device path given");
3584 return;
3585 }
130257dc 3586 backend->u.pipe = g_new0(ChardevHostdev, 1);
d0d7708b 3587 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.pipe));
130257dc 3588 backend->u.pipe->device = g_strdup(device);
548cbb36
GH		 3589}
3590
4f57378f
MA		 3591static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3592 Error **errp)
1da48c65
GH		 3593{
3594 int val;
3595
130257dc 3596 backend->u.ringbuf = g_new0(ChardevRingbuf, 1);
d0d7708b 3597 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(backend->u.ringbuf));
1da48c65 3598
0f953051 3599 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3600 if (val != 0) {
130257dc
EB		 3601 backend->u.ringbuf->has_size = true;
3602 backend->u.ringbuf->size = val;
1da48c65
GH		 3603 }
3604}
3605
bb6fb7c0
GH		 3606static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3607 Error **errp)
3608{
3609 const char *chardev = qemu_opt_get(opts, "chardev");
3610
3611 if (chardev == NULL) {
3612 error_setg(errp, "chardev: mux: no chardev given");
3613 return;
3614 }
130257dc 3615 backend->u.mux = g_new0(ChardevMux, 1);
d0d7708b 3616 qemu_chr_parse_common(opts, qapi_ChardevMux_base(backend->u.mux));
130257dc 3617 backend->u.mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3618}
3619
dafd325d
PM		 3620static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3621 Error **errp)
3622{
3623 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3624 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3625 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3626 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3627 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3628 const char *path = qemu_opt_get(opts, "path");
3629 const char *host = qemu_opt_get(opts, "host");
3630 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3631 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d
PM		 3632 SocketAddress *addr;
3633
3634 if (!path) {
3635 if (!host) {
3636 error_setg(errp, "chardev: socket: no host given");
3637 return;
3638 }
3639 if (!port) {
3640 error_setg(errp, "chardev: socket: no port given");
3641 return;
3642 }
a8fb5427
DB		 3643 } else {
3644 if (tls_creds) {
3645 error_setg(errp, "TLS can only be used over TCP socket");
3646 return;
3647 }
dafd325d
PM		 3648 }
3649
130257dc 3650 backend->u.socket = g_new0(ChardevSocket, 1);
d0d7708b 3651 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(backend->u.socket));
dafd325d 3652
130257dc
EB		 3653 backend->u.socket->has_nodelay = true;
3654 backend->u.socket->nodelay = do_nodelay;
3655 backend->u.socket->has_server = true;
3656 backend->u.socket->server = is_listen;
3657 backend->u.socket->has_telnet = true;
3658 backend->u.socket->telnet = is_telnet;
3659 backend->u.socket->has_wait = true;
3660 backend->u.socket->wait = is_waitconnect;
3661 backend->u.socket->has_reconnect = true;
3662 backend->u.socket->reconnect = reconnect;
a8fb5427 3663 backend->u.socket->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3664
3665 addr = g_new0(SocketAddress, 1);
3666 if (path) {
130257dc
EB		 3667 addr->type = SOCKET_ADDRESS_KIND_UNIX;
3668 addr->u.q_unix = g_new0(UnixSocketAddress, 1);
3669 addr->u.q_unix->path = g_strdup(path);
dafd325d 3670 } else {
130257dc
EB		 3671 addr->type = SOCKET_ADDRESS_KIND_INET;
3672 addr->u.inet = g_new0(InetSocketAddress, 1);
3673 addr->u.inet->host = g_strdup(host);
3674 addr->u.inet->port = g_strdup(port);
3675 addr->u.inet->has_to = qemu_opt_get(opts, "to");
3676 addr->u.inet->to = qemu_opt_get_number(opts, "to", 0);
3677 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3678 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3679 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3680 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
dafd325d 3681 }
130257dc 3682 backend->u.socket->addr = addr;
dafd325d
PM		 3683}
3684
90a14bfe
PM		 3685static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3686 Error **errp)
3687{
3688 const char *host = qemu_opt_get(opts, "host");
3689 const char *port = qemu_opt_get(opts, "port");
3690 const char *localaddr = qemu_opt_get(opts, "localaddr");
3691 const char *localport = qemu_opt_get(opts, "localport");
3692 bool has_local = false;
3693 SocketAddress *addr;
3694
3695 if (host == NULL || strlen(host) == 0) {
3696 host = "localhost";
3697 }
3698 if (port == NULL || strlen(port) == 0) {
3699 error_setg(errp, "chardev: udp: remote port not specified");
3700 return;
3701 }
3702 if (localport == NULL || strlen(localport) == 0) {
3703 localport = "0";
3704 } else {
3705 has_local = true;
3706 }
3707 if (localaddr == NULL || strlen(localaddr) == 0) {
3708 localaddr = "";
3709 } else {
3710 has_local = true;
3711 }
3712
130257dc 3713 backend->u.udp = g_new0(ChardevUdp, 1);
d0d7708b 3714 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(backend->u.udp));
90a14bfe
PM		 3715
3716 addr = g_new0(SocketAddress, 1);
130257dc
EB		 3717 addr->type = SOCKET_ADDRESS_KIND_INET;
3718 addr->u.inet = g_new0(InetSocketAddress, 1);
3719 addr->u.inet->host = g_strdup(host);
3720 addr->u.inet->port = g_strdup(port);
3721 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3722 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3723 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3724 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3725 backend->u.udp->remote = addr;
90a14bfe
PM		 3726
3727 if (has_local) {
130257dc 3728 backend->u.udp->has_local = true;
90a14bfe 3729 addr = g_new0(SocketAddress, 1);
130257dc
EB		 3730 addr->type = SOCKET_ADDRESS_KIND_INET;
3731 addr->u.inet = g_new0(InetSocketAddress, 1);
3732 addr->u.inet->host = g_strdup(localaddr);
3733 addr->u.inet->port = g_strdup(localport);
3734 backend->u.udp->local = addr;
90a14bfe
PM		 3735 }
3736}
3737
d654f34e 3738typedef struct CharDriver {
191bc01b 3739 const char *name;
99aec012 3740 ChardevBackendKind kind;
2c5f4882 3741 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3742 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3743 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3744} CharDriver;
3745
3746static GSList *backends;
3747
e4d50d47 3748void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3749 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3750 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3751 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3752{
3753 CharDriver *s;
3754
3755 s = g_malloc0(sizeof(*s));
3756 s->name = g_strdup(name);
3757 s->kind = kind;
3758 s->parse = parse;
4ca17281 3759 s->create = create;
2c5f4882
GH		 3760
3761 backends = g_slist_append(backends, s);
3762}
3763
f69554b9 3764CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3765 void (*init)(struct CharDriverState *s),
3766 Error **errp)
191bc01b 3767{
0aff637e 3768 Error *local_err = NULL;
d654f34e 3769 CharDriver *cd;
191bc01b 3770 CharDriverState *chr;
d654f34e 3771 GSList *i;
a61ae7f8
PM		 3772 ChardevReturn *ret = NULL;
3773 ChardevBackend *backend;
3774 const char *id = qemu_opts_id(opts);
3775 char *bid = NULL;
191bc01b 3776
a61ae7f8 3777 if (id == NULL) {
312fd5f2 3778 error_setg(errp, "chardev: no id specified");
2274ae9d 3779 goto err;
191bc01b
GH		 3780 }
3781
1bbd185f 3782 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3783 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3784 qemu_opts_id(opts));
2274ae9d 3785 goto err;
1bbd185f 3786 }
d654f34e
AL		 3787 for (i = backends; i; i = i->next) {
3788 cd = i->data;
3789
3790 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3791 break;
d654f34e 3792 }
191bc01b 3793 }
d654f34e 3794 if (i == NULL) {
312fd5f2 3795 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3796 qemu_opt_get(opts, "backend"));
e668287d 3797 goto err;
191bc01b
GH		 3798 }
3799
a61ae7f8 3800 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3801
a61ae7f8
PM		 3802 if (qemu_opt_get_bool(opts, "mux", 0)) {
3803 bid = g_strdup_printf("%s-base", id);
3804 }
2c5f4882 3805
a61ae7f8 3806 chr = NULL;
130257dc 3807 backend->type = cd->kind;
a61ae7f8
PM		 3808 if (cd->parse) {
3809 cd->parse(opts, backend, &local_err);
3810 if (local_err) {
3811 error_propagate(errp, local_err);
2c5f4882
GH		 3812 goto qapi_out;
3813 }
d0d7708b
DB		 3814 } else {
3815 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3816 qemu_chr_parse_common(opts, cc);
3817 backend->u.data = cc;
2c5f4882 3818 }
d0d7708b 3819
a61ae7f8
PM		 3820 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3821 if (!ret) {
3822 goto qapi_out;
191bc01b
GH		 3823 }
3824
a61ae7f8
PM		 3825 if (bid) {
3826 qapi_free_ChardevBackend(backend);
3827 qapi_free_ChardevReturn(ret);
3828 backend = g_new0(ChardevBackend, 1);
130257dc
EB		 3829 backend->u.mux = g_new0(ChardevMux, 1);
3830 backend->type = CHARDEV_BACKEND_KIND_MUX;
3831 backend->u.mux->chardev = g_strdup(bid);
a61ae7f8
PM		 3832 ret = qmp_chardev_add(id, backend, errp);
3833 if (!ret) {
3834 chr = qemu_chr_find(bid);
3835 qemu_chr_delete(chr);
3836 chr = NULL;
3837 goto qapi_out;
3838 }
bd5c51ee 3839 }
7591c5c1 3840
a61ae7f8 3841 chr = qemu_chr_find(id);
2274ae9d 3842 chr->opts = opts;
a61ae7f8
PM		 3843
3844qapi_out:
3845 qapi_free_ChardevBackend(backend);
3846 qapi_free_ChardevReturn(ret);
3847 g_free(bid);
191bc01b 3848 return chr;
2274ae9d
GH		 3849
3850err:
3851 qemu_opts_del(opts);
3852 return NULL;
191bc01b
GH		 3853}
3854
27143a44 3855CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3856{
3857 const char *p;
3858 CharDriverState *chr;
191bc01b 3859 QemuOpts *opts;
bd2d80b2 3860 Error *err = NULL;
191bc01b 3861
c845f401
GH		 3862 if (strstart(filename, "chardev:", &p)) {
3863 return qemu_chr_find(p);
3864 }
3865
191bc01b 3866 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3867 if (!opts)
3868 return NULL;
6f97dba0 3869
bd2d80b2 3870 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3871 if (err) {
565f65d2 3872 error_report_err(err);
bd2d80b2 3873 }
7e1b35b4 3874 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3875 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3876 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3877 }
3878 return chr;
3879}
3880
15f31519 3881void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3882{
3883 if (chr->chr_set_echo) {
3884 chr->chr_set_echo(chr, echo);
3885 }
3886}
3887
8e25daa8 3888void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3889{
8e25daa8 3890 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3891 return;
3892 }
8e25daa8 3893 chr->fe_open = fe_open;
574b711a
HG		 3894 if (chr->chr_set_fe_open) {
3895 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3896 }
3897}
3898
d61b0c9a
MAL		 3899void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3900{
3901 if (chr->chr_fe_event) {
3902 chr->chr_fe_event(chr, event);
3903 }
3904}
3905
2c8a5942
KW		 3906int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3907 GIOFunc func, void *user_data)
23673ca7
AL		 3908{
3909 GSource *src;
3910 guint tag;
3911
3912 if (s->chr_add_watch == NULL) {
3913 return -ENOSYS;
3914 }
3915
3916 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3917 if (!src) {
3918 return -EINVAL;
3919 }
3920
23673ca7
AL		 3921 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3922 tag = g_source_attach(src, NULL);
3923 g_source_unref(src);
3924
3925 return tag;
3926}
3927
44c473de
HG		 3928int qemu_chr_fe_claim(CharDriverState *s)
3929{
3930 if (s->avail_connections < 1) {
3931 return -1;
3932 }
3933 s->avail_connections--;
3934 return 0;
3935}
3936
3937void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3938{
3939 if (qemu_chr_fe_claim(s) != 0) {
3940 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3941 __func__, s->label);
3942 exit(1);
3943 }
3944}
3945
3946void qemu_chr_fe_release(CharDriverState *s)
3947{
3948 s->avail_connections++;
3949}
3950
d0d7708b 3951static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 3952{
7267c094
AL		 3953 g_free(chr->filename);
3954 g_free(chr->label);
4ad60880 3955 qemu_opts_del(chr->opts);
d0d7708b
DB		 3956 if (chr->logfd != -1) {
3957 close(chr->logfd);
3958 }
fefd749c 3959 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 3960 g_free(chr);
6f97dba0
AL		 3961}
3962
d0d7708b
DB		 3963void qemu_chr_free(CharDriverState *chr)
3964{
3965 if (chr->chr_close) {
3966 chr->chr_close(chr);
3967 }
3968 qemu_chr_free_common(chr);
3969}
3970
1ad78ea5
MAL		 3971void qemu_chr_delete(CharDriverState *chr)
3972{
3973 QTAILQ_REMOVE(&chardevs, chr, next);
3974 qemu_chr_free(chr);
3975}
3976
c5a415a0 3977ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3978{
c5a415a0 3979 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3980 CharDriverState *chr;
3981
72cf2d4f 3982 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3983 ChardevInfoList *info = g_malloc0(sizeof(*info));
3984 info->value = g_malloc0(sizeof(*info->value));
3985 info->value->label = g_strdup(chr->label);
3986 info->value->filename = g_strdup(chr->filename);
32a97ea1 3987 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 3988
3989 info->next = chr_list;
3990 chr_list = info;
6f97dba0 3991 }
588b3832 3992
c5a415a0 3993 return chr_list;
6f97dba0 3994}
c845f401 3995
77d1c3c6
MK		 3996ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3997{
3998 ChardevBackendInfoList *backend_list = NULL;
3999 CharDriver *c = NULL;
4000 GSList *i = NULL;
4001
4002 for (i = backends; i; i = i->next) {
4003 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4004 c = i->data;
4005 info->value = g_malloc0(sizeof(*info->value));
4006 info->value->name = g_strdup(c->name);
4007
4008 info->next = backend_list;
4009 backend_list = info;
4010 }
4011
4012 return backend_list;
4013}
4014
c845f401
GH		 4015CharDriverState *qemu_chr_find(const char *name)
4016{
4017 CharDriverState *chr;
4018
72cf2d4f 4019 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4020 if (strcmp(chr->label, name) != 0)
4021 continue;
4022 return chr;
4023 }
4024 return NULL;
4025}
0beb4942
AL		 4026
4027/* Get a character (serial) device interface. */
4028CharDriverState *qemu_char_get_next_serial(void)
4029{
4030 static int next_serial;
456d6069 4031 CharDriverState *chr;
0beb4942
AL		 4032
4033 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 4034
4035 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4036 chr = serial_hds[next_serial++];
4037 qemu_chr_fe_claim_no_fail(chr);
4038 return chr;
4039 }
4040 return NULL;
0beb4942
AL		 4041}
4042
4d454574
PB		 4043QemuOptsList qemu_chardev_opts = {
4044 .name = "chardev",
4045 .implied_opt_name = "backend",
4046 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4047 .desc = {
4048 {
4049 .name = "backend",
4050 .type = QEMU_OPT_STRING,
4051 },{
4052 .name = "path",
4053 .type = QEMU_OPT_STRING,
4054 },{
4055 .name = "host",
4056 .type = QEMU_OPT_STRING,
4057 },{
4058 .name = "port",
4059 .type = QEMU_OPT_STRING,
4060 },{
4061 .name = "localaddr",
4062 .type = QEMU_OPT_STRING,
4063 },{
4064 .name = "localport",
4065 .type = QEMU_OPT_STRING,
4066 },{
4067 .name = "to",
4068 .type = QEMU_OPT_NUMBER,
4069 },{
4070 .name = "ipv4",
4071 .type = QEMU_OPT_BOOL,
4072 },{
4073 .name = "ipv6",
4074 .type = QEMU_OPT_BOOL,
4075 },{
4076 .name = "wait",
4077 .type = QEMU_OPT_BOOL,
4078 },{
4079 .name = "server",
4080 .type = QEMU_OPT_BOOL,
4081 },{
4082 .name = "delay",
4083 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4084 },{
4085 .name = "reconnect",
4086 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4087 },{
4088 .name = "telnet",
4089 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4090 },{
4091 .name = "tls-creds",
4092 .type = QEMU_OPT_STRING,
4d454574
PB		 4093 },{
4094 .name = "width",
4095 .type = QEMU_OPT_NUMBER,
4096 },{
4097 .name = "height",
4098 .type = QEMU_OPT_NUMBER,
4099 },{
4100 .name = "cols",
4101 .type = QEMU_OPT_NUMBER,
4102 },{
4103 .name = "rows",
4104 .type = QEMU_OPT_NUMBER,
4105 },{
4106 .name = "mux",
4107 .type = QEMU_OPT_BOOL,
4108 },{
4109 .name = "signal",
4110 .type = QEMU_OPT_BOOL,
4111 },{
4112 .name = "name",
4113 .type = QEMU_OPT_STRING,
4114 },{
4115 .name = "debug",
4116 .type = QEMU_OPT_NUMBER,
51767e7c 4117 },{
3949e594 4118 .name = "size",
de1cc36e 4119 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4120 },{
4121 .name = "chardev",
4122 .type = QEMU_OPT_STRING,
31e38a22
OK		 4123 },{
4124 .name = "append",
4125 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4126 },{
4127 .name = "logfile",
4128 .type = QEMU_OPT_STRING,
4129 },{
4130 .name = "logappend",
4131 .type = QEMU_OPT_BOOL,
4d454574
PB		 4132 },
4133 { /* end of list */ }
4134 },
4135};
f1a1a356 4136
ffbdbe59
GH		 4137#ifdef _WIN32
4138
fd5b036c
PB		 4139static CharDriverState *qmp_chardev_open_file(const char *id,
4140 ChardevBackend *backend,
4141 ChardevReturn *ret,
4142 Error **errp)
ffbdbe59 4143{
130257dc 4144 ChardevFile *file = backend->u.file;
d0d7708b 4145 ChardevCommon *common = qapi_ChardevFile_base(backend->u.file);
ffbdbe59
GH		 4146 HANDLE out;
4147
e859eda5 4148 if (file->has_in) {
ffbdbe59
GH		 4149 error_setg(errp, "input file not supported");
4150 return NULL;
4151 }
4152
4153 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4154 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4155 if (out == INVALID_HANDLE_VALUE) {
4156 error_setg(errp, "open %s failed", file->out);
4157 return NULL;
4158 }
d0d7708b 4159 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4160}
4161
6511d396
PB		 4162static CharDriverState *qmp_chardev_open_serial(const char *id,
4163 ChardevBackend *backend,
4164 ChardevReturn *ret,
d36b2b90 4165 Error **errp)
d59044ef 4166{
130257dc 4167 ChardevHostdev *serial = backend->u.serial;
d0d7708b
DB		 4168 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.serial);
4169 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4170}
4171
ffbdbe59
GH		 4172#else /* WIN32 */
4173
4174static int qmp_chardev_open_file_source(char *src, int flags,
4175 Error **errp)
4176{
4177 int fd = -1;
4178
4179 TFR(fd = qemu_open(src, flags, 0666));
4180 if (fd == -1) {
20c39760 4181 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4182 }
4183 return fd;
4184}
4185
fd5b036c
PB		 4186static CharDriverState *qmp_chardev_open_file(const char *id,
4187 ChardevBackend *backend,
4188 ChardevReturn *ret,
4189 Error **errp)
ffbdbe59 4190{
130257dc 4191 ChardevFile *file = backend->u.file;
d0d7708b 4192 ChardevCommon *common = qapi_ChardevFile_base(backend->u.file);
5f758366 4193 int flags, in = -1, out;
ffbdbe59 4194
31e38a22
OK		 4195 flags = O_WRONLY | O_CREAT | O_BINARY;
4196 if (file->has_append && file->append) {
4197 flags |= O_APPEND;
4198 } else {
4199 flags |= O_TRUNC;
4200 }
4201
ffbdbe59 4202 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4203 if (out < 0) {
ffbdbe59
GH		 4204 return NULL;
4205 }
4206
e859eda5 4207 if (file->has_in) {
ffbdbe59
GH		 4208 flags = O_RDONLY;
4209 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4210 if (in < 0) {
ffbdbe59
GH		 4211 qemu_close(out);
4212 return NULL;
4213 }
4214 }
4215
d0d7708b 4216 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4217}
4218
d809ab95 4219#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4220static CharDriverState *qmp_chardev_open_serial(const char *id,
4221 ChardevBackend *backend,
4222 ChardevReturn *ret,
d36b2b90 4223 Error **errp)
d59044ef 4224{
130257dc 4225 ChardevHostdev *serial = backend->u.serial;
d0d7708b 4226 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.serial);
d36b2b90
MA		 4227 int fd;
4228
4229 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4230 if (fd < 0) {
d36b2b90 4231 return NULL;
39099991 4232 }
f9e8cacc 4233 qemu_set_nonblock(fd);
d0d7708b 4234 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4235}
6511d396 4236#endif
d36b2b90 4237
d809ab95 4238#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4239static CharDriverState *qmp_chardev_open_parallel(const char *id,
4240 ChardevBackend *backend,
4241 ChardevReturn *ret,
d36b2b90
MA		 4242 Error **errp)
4243{
130257dc 4244 ChardevHostdev *parallel = backend->u.parallel;
d0d7708b 4245 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.parallel);
d36b2b90
MA		 4246 int fd;
4247
4248 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4249 if (fd < 0) {
d59044ef
GH		 4250 return NULL;
4251 }
d0d7708b 4252 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4253}
d809ab95 4254#endif
d59044ef 4255
ffbdbe59
GH		 4256#endif /* WIN32 */
4257
5008e5b7
CM		 4258static void socket_try_connect(CharDriverState *chr)
4259{
4260 Error *err = NULL;
4261
4262 if (!qemu_chr_open_socket_fd(chr, &err)) {
4263 check_report_connect_error(chr, err);
4264 }
4265}
4266
5dd1f02b
CM		 4267static gboolean socket_reconnect_timeout(gpointer opaque)
4268{
4269 CharDriverState *chr = opaque;
4270 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 4271
4272 s->reconnect_timer = 0;
4273
4274 if (chr->be_open) {
4275 return false;
4276 }
4277
5008e5b7 4278 socket_try_connect(chr);
5dd1f02b
CM		 4279
4280 return false;
4281}
4282
dbba8d1b
PB		 4283static CharDriverState *qmp_chardev_open_socket(const char *id,
4284 ChardevBackend *backend,
4285 ChardevReturn *ret,
f6bd5d6e
GH		 4286 Error **errp)
4287{
43ded1a0
CM		 4288 CharDriverState *chr;
4289 TCPCharDriver *s;
130257dc 4290 ChardevSocket *sock = backend->u.socket;
f6bd5d6e
GH		 4291 SocketAddress *addr = sock->addr;
4292 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4293 bool is_listen = sock->has_server ? sock->server : true;
4294 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4295 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4296 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
d0d7708b 4297 ChardevCommon *common = qapi_ChardevSocket_base(backend->u.socket);
43ded1a0 4298
d0d7708b
DB		 4299 chr = qemu_chr_alloc(common, errp);
4300 if (!chr) {
4301 return NULL;
4302 }
2d528d45 4303 s = g_new0(TCPCharDriver, 1);
43ded1a0 4304
130257dc 4305 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4306 s->is_listen = is_listen;
4307 s->is_telnet = is_telnet;
43ded1a0 4308 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4309 if (sock->tls_creds) {
4310 Object *creds;
4311 creds = object_resolve_path_component(
4312 object_get_objects_root(), sock->tls_creds);
4313 if (!creds) {
4314 error_setg(errp, "No TLS credentials with id '%s'",
4315 sock->tls_creds);
4316 goto error;
4317 }
4318 s->tls_creds = (QCryptoTLSCreds *)
4319 object_dynamic_cast(creds,
4320 TYPE_QCRYPTO_TLS_CREDS);
4321 if (!s->tls_creds) {
4322 error_setg(errp, "Object with id '%s' is not TLS credentials",
4323 sock->tls_creds);
4324 goto error;
4325 }
4326 object_ref(OBJECT(s->tls_creds));
4327 if (is_listen) {
4328 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4329 error_setg(errp, "%s",
4330 "Expected TLS credentials for server endpoint");
4331 goto error;
4332 }
4333 } else {
4334 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4335 error_setg(errp, "%s",
4336 "Expected TLS credentials for client endpoint");
4337 goto error;
4338 }
4339 }
4340 }
4341
cfb429cb 4342 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4343
4344 chr->opaque = s;
4345 chr->chr_write = tcp_chr_write;
4346 chr->chr_sync_read = tcp_chr_sync_read;
4347 chr->chr_close = tcp_chr_close;
4348 chr->get_msgfds = tcp_get_msgfds;
4349 chr->set_msgfds = tcp_set_msgfds;
4350 chr->chr_add_client = tcp_chr_add_client;
4351 chr->chr_add_watch = tcp_chr_add_watch;
4352 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4353 /* be isn't opened until we get a connection */
4354 chr->explicit_be_open = true;
4355
0ff0fad2
DB		 4356 chr->filename = SocketAddress_to_str("disconnected:",
4357 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4358
4359 if (is_listen) {
43ded1a0
CM		 4360 if (is_telnet) {
4361 s->do_telnetopt = 1;
4362 }
5dd1f02b
CM		 4363 } else if (reconnect > 0) {
4364 s->reconnect_time = reconnect;
f6bd5d6e 4365 }
43ded1a0 4366
5008e5b7
CM		 4367 if (s->reconnect_time) {
4368 socket_try_connect(chr);
4369 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
a8fb5427 4370 goto error;
f6bd5d6e 4371 }
43ded1a0
CM		 4372
4373 if (is_listen && is_waitconnect) {
4374 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4375 chr->filename);
9894dc0c
DB		 4376 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4377 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
43ded1a0
CM		 4378 }
4379
4380 return chr;
a8fb5427
DB		 4381
4382 error:
4383 if (s->tls_creds) {
4384 object_unref(OBJECT(s->tls_creds));
4385 }
4386 g_free(s);
4387 qemu_chr_free_common(chr);
4388 return NULL;
f6bd5d6e
GH		 4389}
4390
e79b80da
PB		 4391static CharDriverState *qmp_chardev_open_udp(const char *id,
4392 ChardevBackend *backend,
4393 ChardevReturn *ret,
08d0ab3f 4394 Error **errp)
3ecc059d 4395{
130257dc 4396 ChardevUdp *udp = backend->u.udp;
d0d7708b 4397 ChardevCommon *common = qapi_ChardevUdp_base(backend->u.udp);
9894dc0c 4398 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4399
9894dc0c
DB		 4400 if (qio_channel_socket_dgram_sync(sioc,
4401 udp->remote, udp->local,
4402 errp) < 0) {
4403 object_unref(OBJECT(sioc));
3ecc059d
GH		 4404 return NULL;
4405 }
9894dc0c 4406 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4407}
4408
f1a1a356
GH		 4409ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4410 Error **errp)
4411{
4412 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4413 CharDriverState *chr = NULL;
eaeba653 4414 Error *local_err = NULL;
4ca17281
PB		 4415 GSList *i;
4416 CharDriver *cd;
f1a1a356
GH		 4417
4418 chr = qemu_chr_find(id);
4419 if (chr) {
4420 error_setg(errp, "Chardev '%s' already exists", id);
4421 g_free(ret);
4422 return NULL;
4423 }
4424
4ca17281
PB		 4425 for (i = backends; i; i = i->next) {
4426 cd = i->data;
4427
130257dc 4428 if (cd->kind == backend->type) {
4ca17281
PB		 4429 chr = cd->create(id, backend, ret, &local_err);
4430 if (local_err) {
4431 error_propagate(errp, local_err);
4432 goto out_error;
4433 }
4434 break;
4435 }
4436 }
4437
4438 if (chr == NULL) {
1c3af0f4
PB		 4439 assert(!i);
4440 error_setg(errp, "chardev backend not available");
4441 goto out_error;
eaeba653
PB		 4442 }
4443
4444 chr->label = g_strdup(id);
4445 chr->avail_connections =
130257dc 4446 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4447 if (!chr->filename) {
130257dc 4448 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4449 }
eaeba653
PB		 4450 if (!chr->explicit_be_open) {
4451 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4452 }
4453 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4454 return ret;
4455
4456out_error:
4457 g_free(ret);
4458 return NULL;
f1a1a356
GH		 4459}
4460
4461void qmp_chardev_remove(const char *id, Error **errp)
4462{
4463 CharDriverState *chr;
4464
4465 chr = qemu_chr_find(id);
8108fd3e 4466 if (chr == NULL) {
f1a1a356
GH		 4467 error_setg(errp, "Chardev '%s' not found", id);
4468 return;
4469 }
4470 if (chr->chr_can_read || chr->chr_read ||
4471 chr->chr_event || chr->handler_opaque) {
4472 error_setg(errp, "Chardev '%s' is busy", id);
4473 return;
4474 }
4475 qemu_chr_delete(chr);
4476}
d654f34e
AL		 4477
4478static void register_types(void)
4479{
4ca17281 4480 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4481 qemu_chr_open_null);
e4d50d47 4482 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4483 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4484 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4485 qmp_chardev_open_udp);
e4d50d47 4486 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4487 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4488 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4489 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4490 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4491 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4492#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4493 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4494 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4495 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4496 qemu_chr_parse_serial, qmp_chardev_open_serial);
4497#endif
38bfb1a6 4498#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4499 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4500 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4501 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4502 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4503#endif
c2e75a43 4504#ifdef HAVE_CHARDEV_PTY
4ca17281 4505 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4506 qemu_chr_open_pty);
4507#endif
122e5ed4 4508#ifdef _WIN32
4ca17281 4509 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4510 qemu_chr_open_win_con);
4511#endif
e4d50d47 4512 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4513 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4514 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4515 qemu_chr_open_mux);
c11ed966 4516 /* Bug-compatibility: */
e4d50d47 4517 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4518 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4519 /* this must be done after machine init, since we register FEs with muxes
4520 * as part of realize functions like serial_isa_realizefn when -nographic
4521 * is specified
4522 */
4523 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4524}
4525
4526type_init(register_types);
Mirror of https://git.qemu.org/git/qemu.git